708 results on '"Variacao genetica"'
Search Results
2. EFEITO DO GENÓTIPO SOBRE O POTENCIAL PARA PRODUÇÃO DE GEMAS E RAÍZES ADVENTÍCIAS EM Eucalyptus grandis Hill ex Maiden IN VITRO
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Rita de Cassia Sobrosa and Maisa Pimentel Martins Corder
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micropropagação ,variação genética ,enraizamento in vitro ,Forestry ,SD1-669.5 - Abstract
RESUMO Aresposta de explantes em um sistema de cultura de tecidos depende do genótipo do material em cultura. Estudou-se a variação genética entre e dentro de famílias de polinização aberta de uma população de Eucalyptus grandis, aos 27 anos de idade, para proliferação de gemas e produção de raízes adventícias in vitro. O teste foi em blocos ao acaso, com sete tratamentos (progênies), em cinco repetições e oito explantes por parcela. As progênies apresentaram diferenças significativas quanto à formação de gemas e de raízes. Variações genéticas ocorreram entre progênies com elevada amplitude de gemas formadas. Amplas variações genéticas dentro de progênies também ocorreram para a capacidade de produção de gemas. Os efeitos do genótipo e do ambiente foram significativos na formação de gemas e de raízes. Através da seleção de famílias a produção de gemas e de raízes adventícias pode ser aumentada para otimizar a multiplicação in vitro dessa espécie.
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- 2023
3. ACTN3 GENE POLYMORPHISM AND FACTORS ASSOCIATED WITH FUNCTIONAL PERFORMANCE IN ELDERLY WOMEN ASSISTED IN PRIMARY HEALTH CARE.
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Teixeira Machado, Leandro César, Medeiros Leite, Mateus, Morato Stival, Marina, de Sousa Barbalho, Yuri Gustavo, Dinato de Lima, Filipe, Ramos de Lima, Luciano, de Oliveira Silva, Alessandro, Rodrigues da Silva, Izabel Cristina, and Schwerz Funghetto, Silvana
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GENETIC polymorphisms , *OLDER women , *PRIMARY health care , *DEMOGRAPHIC characteristics , *PHYSICAL activity , *GENETIC variation , *BODY mass index - Abstract
Objective: To analyze potential influences of the R/X genetic polymorphism of the ACTN3 gene, as well as of anthropometric and metabolic characteristics on the functional performance of elderly women assisted in primary health care. Method: One hundred and forty-one elderly women were assessed in terms of anthropometric, metabolic and functional aspects, in addition to clinical, cognitive and demographic characteristics. Allele and genotype frequencies of ACTN3 gene polymorphism were determined. Results: 141 elderly women (68.30 ± 6.18 years) were evaluated. No significant differences (p > 0.05) were observed between the RR and RX/XX genotypes in the elderly women's functional performance, anthropometric or metabolic characteristics. The TUG test completion time showed positive correlations with age, body mass index, waist circumference, and fat percentage (s = 0.315; p < 0.001; s = 0.238; p = 0.005; s = 0.174; p = 0.039; s = 0.207; p = 0.014), respectively. Negative correlations were found between the TUG test with absolute handgrip strength (s = -0.314; p < 0.001) and relative handgrip strength (s = -0.380; p < 0.001). Conclusion: In our study, there were no influences from ACTN3 gene polymorphisms on the functional performance of the elderly women, which is influenced by other factors. [ABSTRACT FROM AUTHOR]
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- 2023
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4. Impact of pharmacogenetics on aspirin resistance: a systematic review.
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Figueiredo da Silva, Gustavo, Mattei Lopes, Bruno, Moser, Vinicius, and Ecker Ferreira, Leslie
- Abstract
Copyright of Arquivos de Neuro-Psiquiatria is the property of Thieme Medical Publishing Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
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5. Genetic, clinical and epidemiological characterization of Covid-19 patients in South Brazil.
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Dias Bierhals, Nayanna, Barreto Knod, Erika, Ferreira Weber, Augusto, de Moura Valim, Andreia Rosane, Gonçalves Possuelo, Lia, and Pollo Renner, Jane Dagmar
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EPIDEMIOLOGY , *COVID-19 pandemic , *ANGIOTENSIN converting enzyme - Abstract
Current paper characterizes the epidemiological, clinical and genetic profile of patients with Covid-19. An observational and cross-sectional study was carried out with volunteers diagnosed with Covid-19 between April 2021 and May 2021 in the municipality of Santa Cruz do Sul, Brazil; a blood sample also identified polymorphism in the ACE2 gene. 87 patients were recruited; 6.7% required hospitalization, the majority being male. Although obesity was a more frequent comorbidity, cardiovascular diseases, hypertension and diabetes were more significant when associated with hospitalizations. In the case of genetic characteristics, polymorphisms were found in the ACE2 gene among volunteers. Important research suggests male gender and co-morbidities are risk factors for the severity of Covid-19. [ABSTRACT FROM AUTHOR]
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- 2022
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6. Genetic divergence between bocaiuva acrocomia aculeata (jacq.) lodd. ex mart. genotypes through fruit morphometry.
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Pereira da Silva, Valvenarg, Parabás de Oliveira, Deise, da Silva, Andressa Juliana, Costa de Arruda, Joari, Aparecido Barelli, Marco Antonio, Pereira Borges, Flávio Valadares, Felipin Azevedo, Rafhael, Monteiro Catelan, Laura Letícia, and Leal Sander, Nilo
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FRUIT seeds , *PALMS , *FRUIT morphology , *GERMPLASM , *HIERARCHICAL clustering (Cluster analysis) , *GENETIC variation , *GENOTYPES , *EUCLIDEAN distance , *MULTIVARIATE analysis , *ALMOND ,FRUIT genetics - Abstract
This research aimed to analyze the genetic divergence between genotypes of Acrocomia aculeata (Jacq.) Lodd. Ex Mart collected in natural vegetation in the municipality of Cáceres-Mato Grosso based on morphological characters of fruits and seeds. Bocaiuva fruits were collected at three points of natural occurrence: point 1 - Sítio Peniel dos Sonhos - Barreiro Vermelho Community (15°53'53"S, 57°30'49"W), point 2 - Chácara Boa Esperança (16°05'57"S, 57°39'03"W) point 3 - Santana Community-Morraria Region (15°55'36"S, 57°26'50"W). To estimate the genetic divergence between the bocaiuva genotypes through the morphometry of the fruits and seeds, 420 fruits of 21 genotypes were collected and the following characteristics were evaluated: Horizontal diameter of the fruit, Vertical diameter of the fruit, Total weight of the fruit, Total weight of fresh mesocarp (pulp), Horizontal diameter of almonds, Vertical diameter of almonds and Weight of fresh almond. To estimate the genetic divergence between the genotypes, the standardized Average Euclidean Distance was used as a measure of dissimilarity. Based on this matrix, the Tocher optimization clustering methods and the Hierarchical Clustering Average Between Groups (UPGMA) method were used. The criterion of Singh (1981) was also used to quantify the relative contribution of traits in the estimation of genetic divergence. All analyzes were performed using the computational resources of the Genes software. Through the results obtained, it was possible to verify the greatest dissimilarity between genotypes 3 and 8. The groupings by the Tocher method and the Hierarchical Average Grouping Between Groups (UPGMA) were partially similar in the groupings of genotypes and the characteristics of total fruit weight, followed by characteristic total weight of fresh pasta were the ones that most contributed to estimate the genetic divergence of the evaluated genotypes. The use of multivariate analyzes was efficient in estimating the genetic divergence in which the genotypes evaluated in the present research present genetic divergence and can be used in future pre-genetic improvement research. [ABSTRACT FROM AUTHOR]
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- 2022
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7. EFFECTS OF GENETIC VARIATIONS OF MLCK2, AMPD1, AND COL5A1 ON MUSCLE ENDURANCE.
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Horozoglu, Cem, Aslan, Halid Emre, Karaagac, Ali, Kucukhuseyin, Ozlem, Bilgic, Tugce, Himmetoglu, Solen, Gheybi, Arezoo, Yaylim, Ilhan, and Zeybek, Umit
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GENETIC variation ,BODY composition ,PHYSICAL fitness ,EQUILIBRIUM testing ,BROAD jump ,ADDUCTION - Abstract
Copyright of Revista Brasileira de Medicina do Esporte is the property of Redprint Editora Ltda. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2022
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8. ACTN3 GENE POLYMORPHISM AND FACTORS ASSOCIATED WITH FUNCTIONAL PERFORMANCE IN ELDERLY WOMEN ASSISTED IN PRIMARY HEALTH CARE.
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Teixeira Machado, Leandro César, Medeiros Leite, Mateus, Morato Stival, Marina, Gustavo de Sousa Barbalho, Yuri, Dinato de Lima, Filipe, Ramos de Lima, Luciano, de Oliveira Silva, Alessandro, Rodrigues da Silva, Izabel Cristina, and Schwerz Funghetto, Silvana
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GENETIC polymorphisms , *OLDER women , *HEALTH of older women , *DEMOGRAPHIC characteristics , *PRIMARY health care , *GENETIC variation , *BODY mass index - Abstract
Objective: To analyze potential influences of the R/X genetic polymorphism of the ACTN3 gene, as well as of anthropometric and metabolic characteristics on the functional performance of elderly women assisted in primary health care. Method: One hundred and forty-one elderly women were assessed in terms of anthropometric, metabolic and functional aspects, in addition to clinical, cognitive and demographic characteristics. Allele and genotype frequencies of ACTN3 gene polymorphism were determined. Results: 141 elderly women (68.30 ± 6.18 years) were evaluated. No significant differences (p > 0.05) were observed between the RR and RX/XX genotypes in the elderly women’s functional performance, anthropometric or metabolic characteristics. The TUG test completion time showed positive correlations with age, body mass index, waist circumference, and fat percentage (s = 0.315; p < 0.001; s = 0.238; p = 0.005; s = 0.174; p = 0.039; s = 0.207; p = 0.014), respectively. Negative correlations were found between the TUG test with absolute handgrip strength (s = - 0.314; p < 0.001) and relative handgrip strength (s = - 0.380; p < 0.001). Conclusion: In our study, there were no influences from ACTN3 gene polymorphisms on the functional performance of the elderly women, which is influenced by other factors. [ABSTRACT FROM AUTHOR]
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- 2022
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9. Transferability of microssatellite markers to Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae).
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Moreira de Araujo Junior, Luis, Bolsoni Zago, Hugo, da Silva Ferreira, Marcia Flores, Pratissoli, Dirceu, Gonçalves Pereira, Aléxia, and Pacheco Damascena, Alixelhe
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TRICHOGRAMMA , *TRICHOGRAMMATIDAE , *HYMENOPTERA , *MICROSATELLITE repeats , *BIOLOGICAL pest control , *ICHNEUMONIDAE , *BRACONIDAE - Abstract
The biological pest control has expanded in Brazil with the Trichogramma pretiosum as the main natural enemy. The microsatellite molecular markers Simple Sequence Repeat (SSR) have been the most used, as they are multiallelic, robust and reproducible, in several species. In order to optimize future processes of identification and analysis of the parasitoid's genetic diversity, twenty markers, isolated and characterized for the parasitoid wasp Trichogramma dendrolimi, were tested in 15 generations of T. pretiosum. Those markers, ten have been transferred and can be used to evaluate the genetic variation of T. pretiosum. [ABSTRACT FROM AUTHOR]
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- 2022
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10. Genetic, haplotype and phylogenetic analysis of Ligula intestinalis by using mt-CO1 gene marker: ecological implications, climate change and eco-genetic diversity
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M. A. Selcuk, F. Celik, S. Simsek, H. Ahmed, H. K. Kesik, S. Gunyakti Kilinc, and J. Cao
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variação genética ,Haplotypes ,Climate Change ,genetic variation ,mt-CO1 ,análise in-silico ,Animals ,Cestoda ,Genetic Variation ,Ligula intestinalis ,in-silico analysis ,General Agricultural and Biological Sciences ,Phylogeny - Abstract
Ligula intestinalis is a cestode parasite that affects freshwater fish in different countries of the world. The current study aims to reveal the phylogenetic, genetic and haplotype diversity of mt-CO1 gene sequences sent to the NCBI database from different countries by using in-silico analysis. The 105 mt-CO1 (371 bp) gene sequences of L. intestinalis obtained from NCBI were used for bioinformatics analyses. Sequences were subjected to phylogenetic and haplotype analysis. As a result of the haplotype analysis of L. intestinalis, 38 haplotypes were obtained from 13 different countries. Hap24 constituted 44.76% of the obtained haplotype network. Changes in nucleotides between haplotypes occurred at 1-84 different points. China and Turkey have highest fixation index (Fst) values of 0.59761, while the lowest (-0.10526) was found between Russia and Turkey. This study provides a baseline for future studies on extensive scale on the epidemiology, ecological aspects, distribution pattern, transmission dynamics and population dispersion of L. intestinalis worldwide. Resumo Ligula intestinalis é um parasita cestódeo que acomete peixes de água doce em diversos países do mundo. O presente estudo visa revelar a diversidade filogenética, genética e de haplótipos das sequências do gene mt-CO1 enviadas ao banco de dados do NCBI de diferentes países, por meio de análise in-silico. As sequências gênicas de 105 mt-CO1 (371 pb) de L. intestinalis obtidas do NCBI foram utilizadas para análises bioinformáticas. As sequências foram submetidas a análise filogenética e de haplótipos. Como resultado da análise de haplótipos de L. intestinalis, 38 haplótipos foram obtidos de 13 países diferentes. Hap24 constituiu 44,76% da rede de haplótipos obtida. Mudanças nos nucleotídeos entre os haplótipos ocorreram em 1-84 pontos diferentes. A China e a Turquia apresentam os maiores valores do índice de fixação (Fst), 0,59761, enquanto o menor (-0,10526) foi encontrado entre a Rússia e a Turquia. Este estudo fornece uma linha de base para futuros estudos em larga escala sobre epidemiologia, aspectos ecológicos, padrão de distribuição, dinâmica de transmissão e dispersão populacional de L. intestinalis em todo o mundo.
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- 2024
11. Genetic divergence of Anthurium affine germplasm using morphoagronomic and molecular descriptors.
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Maia, Clara Yohana, Soares, Nazaré Suziane, Ribeiro Castro, Ana Cecília, Alves de Queirós, João Ravelly, Souza de Aragão, Fernando Antonio, and do Nascimento Bordallo, Patricia
- Abstract
Copyright of Revista Ciência Agronômica is the property of Revista Ciencia Agronomica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2020
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12. Estimates of genetic selection gain in irrigated F3 rice families.
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da FONSECA, Gabriela de Magalhães, NARDINO, Maicon, da FONSECA, Marina de Magalhães, da LUZ, Viviane Koop, de MAGALHÃES JÚNIOR, Ariano Martins, de OLIVEIRA, Antonio Costa, and da MAIA, Luciano Carlos
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RICE breeding ,RICE genetics ,RICE varieties ,RICE field irrigation ,GRAIN research ,AGRICULTURE - Abstract
Copyright of Cientifica is the property of Fundacao de Apoio a Pesquisa e Extensao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2020
- Full Text
- View/download PDF
13. Multidrug-Resistant Tuberculosis by Strains of Beijing Family, in Patients from Lisbon, Portugal: Preliminary Report
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Fernando Maltez, Teresa Martins, Diana Póvoas, João Cabo, Helena Peres, Francisco Antunes, João Perdigão, and Isabel Portugal
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Mycobacterium tuberculosis/genética ,Portugal ,Tuberculose Resistente a Múltiplos Medicamentos ,Variação Genética ,Medicine ,Medicine (General) ,R5-920 - Abstract
Introduction: Beijing family strains of Mycobacterium tuberculosis are associated with multidrug-resistance. Although strains of the Lisboa family are the most common among multidrug-resistant and extensively drug-resistant patients in the region, several studies have reported the presence of the Beijing family. However, the features of patients from whom they were isolated, are not yet known. Material and Methods: Retrospective study involving 104 multidrug-resistant and extensively drug-resistant strains of Mycobacterium tuberculosis, from the same number of patients, isolated and genotyped between 1993 and 2015 in Lisbon. We assessed the prevalence of strains of both families and the epidemiologic and clinical features of those infected with Beijing family strains. Results: Seventy-four strains (71.2%) belonged to the Lisboa family, 25 (24.0%) showed a unique genotypic pattern and five (4.8%) belonged to the Beijing family, the latter identified after 2009. Those infected with Beijing family strains were angolan (n = 1), ukrainian (n = 2) and portuguese (n = 2), mainly young-aged and, four of five immunocompetent and with no past history of tuberculosis. All had multidrug-resistant tuberculosis. We did not find any distinctive clinical or radiological features, neither a predominant resistance pattern. Cure rate was high (four patients). Discussion: Although the number of infected patients with Beijing strains was small, it suggests an important proportion of primary tuberculosis, a potential for transmission in the community but also a better clinical outcome when compared to other reported strains, such as W-Beijing and Lisboa. Conclusion: Although Lisboa family strains account for most of the multidrug and extensively drug-resistant tuberculosis cases in Lisbon area, Beijing strains are transmitted in the city and might change the local characteristics of the epidemics.
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- 2017
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14. Variabilidade genética de isolados brasileiros de Histoplasma Capsulatum
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GERLAN DA ROCHA SANTOS, ISNARA COELHO DE RESENDE DIAS, CLÁUDIO ANGELO VENTURA, and FERNANDA MACHADO FONSECA
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histoplasma ,fator 1 de ribosilação do adp ,variação genética ,Science ,Social Sciences - Abstract
O objetivo desse trabalho foi analisar a diversidade genética de isolados de H. capsulatumno Brasil. Foram selecionadas amostras sequenciadas de H. capsulatum para os genesarf(Fator de ribosilação ADP) e ole(delta-9 fatty aciddesaturase), provenientes de diversos estados do país. Os dados foram obtidos no Centro Nacional de Informação Biotecnológica (NCBI-National Center for Biotechnology Information). Foram incluídas 79 amostras de H. capsulatum sendo que destas, 45 (57%)eram sequências do gene arfe 34 (43%)eram sequências do gene ole. Dentre as 45amostras do genearf, 29 (64,4%) eram de origem clínica,12 (26,7%) de origem ambiental e quatro (8,9%) de origem veterinária. As 34 (100%) amostras do gene ole eram de origem clínica. A análise do gene arf demonstrou que similaridade das amostras variou de 61 a 99%. Entretanto, observamos uma similaridade menor (44%) entre quatro amostras provenientes do Rio de Janeiro. De acordo com a análise filo genética, as sequências parciais do gene ole demonstraram elevados níveis similaridade, variando de 62 a 99%. Os isolados de H. capsulatum demonstraram grande semelhança entre si quando analisamos o gene ole assim como o gene arf, independente da região geográfica do país.
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- 2016
15. Detecção da diversidade genética adaptativa e composição química em cultivares de tamareira e implicações no controle do bicudo vermelho da palmeira, Rhynchophorus ferrugineus Oliver
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N. F. Abdel-Baky, M. I. Motawei, A. A. S. Al-Nujiban, M. A. Aldeghairi, L. A. M. Al-Shuraym, M. T. M. Alharbi, A. S. Alsohim, and M. Rehan
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principais elementos nutricionais ,cultivares resistentes à tamareira ,plant gene resistance ,date palm chemical analysis ,major nutritional elements ,análise química da tamareira ,DNA sequence ,resistência de plantas ,genetic analysis ,Rhynchophorus ferrugineus ,Phoenix dactylifera ,tamareira ,sequência de DNA ,variação genética ,genetic variation ,General Agricultural and Biological Sciences ,resistência gênica da tamareira ,date palm ,date palm resistant cultivars - Abstract
This study, about RPW and date palms, is under the scope of date palm bioecology and nutrition (nutritional ecology) which includes the integration of several areas of research such as date palm biochemistry, genetics, and RPW infestation behavior through various date palm cultivars. Date palm (Phoenix dactylifera L.; Arecaceae) production is under threat from the red palm weevil (RPW), Rhynchophorus ferrugineus Oliver. A better understanding of genetic diversity within date palm cultivars can be useful for its implementation within the insect IPM program in the future. Three indices, namely simple-sequence repeats (SSR) markers to elucidate genetic diversity, chemical components, and a natural infestation index of RPW, were used to evaluate the resistant or susceptible date palm cultivars in Qassim. Based on a field survey of RPW infestation within 79 date palm farms involving 11 cultivars at Qassim, the sensitivity and resistance cultivars were determined. The resistant date palm cultivars were Nabtat Ali, Shakrah, red Sukary, and um Kobar which had the lowest degree of RPW abundance %. Values of the essential minerals, nitrogen, phosphorus, potassium, and calcium within the date palm cultivars were also estimated. RPW abundance % was negatively correlated with the calcium content of date palm cultivars. The principal component analysis (PCA) revealed that the calcium content and RPW abundance % were highly affected by the cultivars. SSR markers of the date palm cluster tree divided genotypes into two main groups at similarity coefficients between 0.56 and 0.91. The 1st group included; Nabtet Ali, Red Sukary, Um Kobar, and Shakrah with similarity coefficients between 0.56, this group was the most resistant cultivars. Therefore, SSR markers were able to characterize and resolve genetic diversity in date palm cultivars for RPW resistance. When SSR markers coupled with higher calcium (Ca) content can efficiently replace indices in characterizing resistant date-palm genotypes with a high confidence level. Integration between date palm genetic diversity, chemical structures, and RPW infestations rates promoted the understanding of the interplay between the diversity of RPW management (short-time scale), and the resistance genes, plant nutrition, and dynamics of the diversity of RPW through domestication and diversification (long-timescale). Therefore, our results may lead to a change in RPW control strategies by switching to using safe alternative pesticide control methods (Resistant cultivars of date palm), which are underestimated and may reveal the impact of low-cost, but highly effective agricultural practices in the field of date production in the world. Understanding the genetic structure and calcium content of date palm cultivars mechanisms could help to predict date palm resistance against RPW populations in the new IPM strategy in RPW control. Resumo Este estudo, sobre RPW e tamareiras, está no âmbito da bioecologia e nutrição da tamareira (ecologia nutricional) que inclui a integração de várias áreas de pesquisa, como bioquímica da tamareira, genética e comportamento de infestação de RPW através de vários cultivares de tamareira. A produção da tamareira (Phoenix dactylifera L.; Arecaceae) está ameaçada pelo gorgulho vermelho da palmeira (RPW), Rhynchophorus ferrugineus Oliver. A compreensão mais aprofundada da diversidade genética dentro dos cultivares de tamareiras pode ser útil para sua implementação no futuro programa de MIP de insetos. Três índices, ou seja, marcadores de sequência simples (SSR) para elucidar a diversidade genética, componentes químicos e um índice de infestação natural de RPW, foram utilizados para avaliar as cultivares de tamareiras resistentes ou suscetíveis em Qassim. Com base em uma pesquisa de campo da infestação de RPW em 79 fazendas de tamareiras envolvendo 11 cultivares em Qassim, as cultivares de sensibilidade e resistência foram determinadas. As cultivares de tamareiras resistentes foram Nabtat Ali, Shakrah, red Sukary e um Kobar, que apresentaram o menor grau de abundância de RPW. Também foram estimados os valores dos minerais essenciais, nitrogênio, fósforo, potássio e cálcio nas cultivares de tamareira. A porcentagem de abundância de RPW correlacionou-se negativamente com o teor de cálcio das cultivares de tamareira. A análise de componentes principais (PCA) revelou que o teor de cálcio e a abundância de RPW % foram altamente afetados pelas cultivares. Marcadores SSR da tamareira dividiram os genótipos em dois grupos principais com coeficientes de similaridade entre 0,56 e 0,91. O 1º grupo incluiu; Nabtet Ali, Red Sukary, Um Kobar e Shakrah com coeficientes de similaridade entre 0,56, este grupo foi o de cultivares mais resistentes. Portanto, os marcadores SSR foram capazes de caracterizar e resolver a diversidade genética em cultivares de tamareiras para resistência a RPW. Quando os marcadores SSR associados ao maior teor de cálcio (Ca) podem substituir com eficiência os índices na caracterização de genótipos de tamareiras resistentes com alto nível de confiança. A integração entre diversidade genética da tamareira, estruturas químicas e taxas de infestação de RPW promoveu a compreensão da interação entre a diversidade de manejo de RPW (escala de tempo curto) e os genes de resistência, nutrição de plantas e dinâmica da diversidade de RPW por meio da domesticação e diversificação (longo prazo). Portanto, nossos resultados podem levar a uma mudança nas estratégias de controle de RPW, passando a usar métodos alternativos seguros de controle de pesticidas (cultivares resistentes de tamareira), sendo subestimados e podem revelar o impacto de práticas agrícolas de baixo custo, mas altamente eficazes no campo de produção de tâmaras no mundo. Compreender a estrutura genética e o teor de cálcio dos mecanismos dos cultivares de tamareira pode ajudar a prever a resistência da tamareira contra populações de RPW na nova estratégia de IPM no controle de RPW.
- Published
- 2023
16. Effects of genetic polymorphism in Pit1, GH, GHR and KCN3 on milk yield and body weight of Khuzestan (Iran) water buffaloes.
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Ahmadzadeh, Meysam, Rashidi, Farzad, Najafabadi, Hamed Amirpour, Jaferian, Amir, and Eghbalsaied, Shahin
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WATER buffalo , *BODY weight , *GENETIC polymorphisms , *MILK yield , *RESTRICTION fragment length polymorphisms , *GENE frequency , *ANIMAL breeding - Abstract
Background: Genetic information is necessary to devise strategic plans aimed to improve the genetic merit of buffalos. Objective: To assess the effect of genetic polymorphisms in GH, Pit-1, GHR, GHRHR, and KCN3 genes on milk production and body weight of Khuzestan water buffaloes. Methods: Blood samples were collected from 60 buffaloes from the Khuzestan province, Iran. Using the PCR-RFLP technique, the amplified and digested fragments of GH/AluI, GHR/AluI, GHRHR/HaeIII, Pit1/HinfI, and KCN3/HindIII were genotyped. Results: All animals were monomorphic for GHRHR. The frequency of mutant alleles for GH, GHR, KCN3, and Pit1 was 47.5, 74.2, 49.2, and 51.7%, respectively. There were significant differences (p<0.0001) in the genotypic frequencies of GH, GHR, and Pit1 between high and low milk-yielding buffaloes. The GH (p=0.0002), GHR (p<0.0001) and Pit1 (p<0.0001) polymorphisms also had significant effects on body weight. Sequencing results revealed the presence of C496A, G495A, G498A and C1501T SNPs in the GH, and G1702T in the GHR gene of Khuzestan buffalos. Conclusion: This study highlights the importance of GH, GHR, and Pit1 on milk production and body weight of Khuzestan buffaloes. The results suggest that devising an integrated breeding plan in Khuzestan water buffalos can considerably benefit from the very high diversity in candidate genes. [ABSTRACT FROM AUTHOR]
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- 2019
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17. CNV detection and their association with growth, efficiency and carcass traits in Santa Inês sheep
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Giovanni Coelho Ladeira, Fabrício Pilonetto, Anna Carolina Fernandes, Paola Pérez Bóscollo, Brayan Dias Dauria, Cristiane Gonçalves Titto, Luiz Lehmann Coutinho, Fabyano Fonseca e Silva, Luís Fernando Batista Pinto, and Gerson Barreto Mourão
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Phenotype ,Sheep ,DNA Copy Number Variations ,Food Animals ,VARIAÇÃO GENÉTICA ,Quantitative Trait Loci ,Animals ,Animal Science and Zoology ,General Medicine ,Polymorphism, Single Nucleotide ,Genome-Wide Association Study - Abstract
Copy number variations (CNV) are an important source of genetic variation. CNV has been increasingly studied and frequently associated with diseases and productive traits in livestock animals. However, CNV-based genome-wide association studies (GWAS) in Santa Inês sheep, one of the principal sheep breeds in Brazil, have not yet been reported. Thus, the aim of this study was to investigate the association between CNV and growth, efficiency and carcass traits in sheep. The Illumina OvineSNP50 BeadChip array was used to detect CNV in 491 Santa Inês individuals. Then, CNV-based GWAS was performed with a linear mixed model approach considering a genomic relationship matrix, for ten traits: (1) growth: body weight at three (W3) and six (W6) months of age; (2) efficiency: residual feed intake (RFI) and feed efficiency (FE) and (3) carcass: external carcass length (ECL), leg length (LL), carcass yield (CY), commercial cuts weight (CCW), loin eye area (LEA) and subcutaneous fat thickness (SFT). We identified 1,167 autosomal CNV in 438 sheep, with 294 non-redundant CNV, ranging from 21.8 to 861.9 kb, merged into 216 distinct copy number variation regions (CNVRs). One significant CNV segment (p
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- 2022
18. Genetic viability and habitat suitability of the critically endangered southern muriqui (Brachyteles arachnoides) in the Atlantic Forest s fragmented landscapes under land use and climate change scenarios
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Roberto De Oliveira Portella and João Pompeu
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Global and Planetary Change ,Ecology ,VARIAÇÃO GENÉTICA ,Ecological Modeling ,Environmental Science (miscellaneous) - Published
- 2023
19. POLIMORFISMO DO GENE ACTN3 E OS FATORES ASSOCIADOS AO DESEMPENHO FUNCIONAL DE IDOSAS ATENDIDAS NA ATENÇÃO PRIMÁRIA EM SAÚDE
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Machado, Leandro César Teixeira, Leite, Mateus Medeiros, Stival, Marina Morato, Barbalho, Yuri Gustavo de Sousa, Lima, Filipe Dinato de, Lima, Luciano Ramos de, Silva, Alessandro de Oliveira, Silva, Izabel Cristina Rodrigues da, and Funghetto, Silvana Schwerz
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Desempenho funcional ,Aging ,Envelhecimento ,Força muscular ,Muscle strength ,Genetic variation ,Variação genética ,Functional performance - Abstract
Objective: To analyze potential influences of the R/X genetic polymorphism of the ACTN3 gene, as well as of anthropometric and metabolic characteristics on the functional performance of elderly women assisted in primary health care. Method: One hundred and forty-one elderly women were assessed in terms of anthropometric, metabolic and functional aspects, in addition to clinical, cognitive and demographic characteristics. Allele and genotype frequencies of ACTN3 gene polymorphism were determined. Results: 141 elderly women (68.30 ± 6.18 years) were evaluated. No significant differences (p > 0.05) were observed between the RR and RX/XX genotypes in the elderly women’s functional performance, anthropometric or metabolic characteristics. The TUG test completion time showed positive correlations with age, body mass index, waist circumference, and fat percentage (s = 0.315; p < 0.001; s = 0.238; p = 0.005; s = 0.174; p = 0.039; s = 0.207; p = 0.014), respectively. Negative correlations were found between the TUG test with absolute handgrip strength (s = - 0.314; p < 0.001) and relative handgrip strength (s = - 0.380; p < 0.001). Conclusion: In our study, there were no influences from ACTN3 gene polymorphisms on the functional performance of the elderly women, which is influenced by other factors. RESUMO Objetivo: analisar as potenciais influências do polimorfismo genético R/X do gene ACTN3 e das características antropométricas e metabólicas no desempenho funcional de mulheres idosas atendidas na atenção primária em saúde. Método: Cento e quarenta e uma idosas foram avaliadas em relação as características antropométricas, metabólicas, funcionais, aspectos clínicos, cognitivos e demográficos. Foram determinadas as frequências de alelos e genótipos do polimorfismo do gene ACTN3. Resultados: 141 idosas (68,30 ± 6,18 anos) foram avaliadas. Não foram observadas diferenças significativas (p > 0,05) entre os genótipos RR e RX/XX no desempenho funcional, características antropométricas ou metabólicas das idosas. O tempo de realização do TUG apresentou correlações positivas com idade, índice de massa corporal, circunferência da cintura e percentual de gordura (s = 0,315; p < 0,001; s = 0,238; p = 0,005; s = 0,174; p = 0,039; s = 0,207; p = 0,014) respectivamente. Correlações negativas foram observadas entre o TUG com força de preensão manual absoluta (s = - 0,314; p < 0,001) e relativa (s = - 0,380; p < 0,001). Conclusão: Em nosso estudo, não foram observadas influências dos polimorfismos do gene ACTN3 no desempenho funcional das idosas, sendo este, influenciado por outros fatores.
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- 2022
20. Community evaluation of glycoproteomics informatics solutions reveals high-performance search strategies for serum glycopeptide analysis
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Robert J. Chalkley, Kai Hooi Khoo, Daniel Kolarich, Erdmann Rapp, Yong Zhang, Hung Yi Wu, Miloslav Sanda, Jonas Nilsson, Enes Sakalli, Gun Wook Park, Doron Kletter, Kathirvel Alagesan, Katalin F. Medzihradszky, Rebeca Kawahara, Nathan Edwards, Radoslav Goldman, Nicolle H. Packer, Yehia Mechref, Wantao Ying, Joseph Zaia, Sriram Neelamegham, Bo Meng, Sergey Y. Vakhrushev, Benjamin L. Schulz, Markus Pioch, Benoit Liquet, Jin Young Kim, Johannes Stadlmann, Benjamin L. Parker, Terry Nguyen-Khuong, Jong Shin Yoo, Adam Pap, Nichollas E. Scott, Mingqi Liu, Marcus Hoffmann, Morten Thaysen-Andersen, Jingfu Zhao, Yingwei Hu, Göran Larson, Matthew S F Choo, Pengyuan Yang, Josef M. Penninger, Marshall Bern, Christina M. Woo, Weiqian Cao, Toan K. Phung, Giuseppe Palmisano, Kai Cheng, Anastasia Chernykh, Stuart M. Haslam, Yifan Huang, Hui Zhang, Cassandra L. Pegg, and Georgy Sofronov
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Proteomics ,Technology ,Glycosylation ,Informatics ,Proteome ,VARIAÇÃO GENÉTICA ,Computer science ,Glycobiology ,Medical and Health Sciences ,Biochemistry ,Tandem mass spectrum ,Software ,Tandem Mass Spectrometry ,Computational platforms and environments ,Humans ,Community evaluation ,Molecular Biology ,Glycoproteins ,Research data ,business.industry ,Glycopeptides ,Cell Biology ,Biological Sciences ,Data science ,Research Personnel ,Glycoproteomics ,Identification (information) ,business ,Analysis ,Developmental Biology ,Biotechnology - Abstract
Glycoproteomics is a powerful yet analytically challenging research tool. Software packages aiding the interpretation of complex glycopeptide tandem mass spectra have appeared, but their relative performance remains untested. Conducted through the HUPO Human Glycoproteomics Initiative, this community study, comprising both developers and users of glycoproteomics software, evaluates solutions for system-wide glycopeptide analysis. The same mass spectrometrybased glycoproteomics datasets from human serum were shared with participants and the relative team performance for N - and O-glycopeptide data analysis was comprehensively established by orthogonal performance tests. Although the results were variable, several high-performance glycoproteomics informatics strategies were identified. Deep analysis of the data revealed key performance-associated search parameters and led to recommendations for improved ‘high-coverage’ and ‘high-accuracy’ glycoproteomics search solutions. This study concludes that diverse software packages for comprehensive glycopeptide data analysis exist, points to several high-performance search strategies and specifies key variables that will guide future software developments and assist informatics decision-making in glycoproteomics., This analysis presents the results of a community-based evaluation of existing software for large-scale glycopeptide data analysis.
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- 2021
21. Genetic diversity of domestic pigs in Tierralta (Colombia) using microsatellites
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Enrique Pardo, Teodora I Cavadía, and Iván Melendez
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Hardy-Weinberg ,probabilidad de exclusión ,Sus scrofa domestica ,probabilidade de exclusão ,variação genética ,Animal culture ,SF1-1100 - Abstract
Background: according to several authors, domestic pigs come from different wild boar populations with varied geographic distribution and are grouped in the genus Sus. Pig domestication occurred gradually. The first animals were small and gathered in small numbers. Several civilizations domesticated this animal as an important source of protein. Tierralta, in Córdoba province, has a large population of domestic pigs, which are a mixture of creole and other breeds. The genetic characterization of populations is used to check the status of genetic diversity, a conclusive element in determining breeding strategies and genetic conservation programs. PCR is the most commonly used technique for studying highly polymorphic markers, such as microsatellites or SSRs. The use of microsatellites is a powerful tool in genetic studies. They have been used for characterization studies of genetic diversity, genetic relationships between populations, paternity testing, inbreeding and genetic bottlenecks. Objective: the purpose of this study was to determine the genetic diversity of domestic pigs in Tierralta (Córdoba, Colombia) using 20 microsatellites. Methods: fifty four samples were studied. Twenty microsatellites recommended by the FAO/ISAG for swine biodiversity studies were used. Results: all the microsatellites were polymorphic, and were detected between 3 (SW911) and 14 (TNFB) alleles (the average number was 6.9 alleles) and a total of 138 alleles were detected. Average expected heterozygosity was 0.5259 and the observed heterozygosity was 0.5120. PIC values ranged from 0.3212 to 0.7980 for loci SW2410 and IFNG, respectively. Conclusions: the results suggest that the analyzed population represents a group with high genetic diversity.
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- 2015
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22. Variabilidade genética em progênies de Pinus caribea var. hondurensis aos 21 anos de idade. Genetic variability in progenies of Pinus caribaea var. hondurensis at 21 years of age.
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Hugo Rodrigo MACEDO, Miguel Luiz Menezes FREITAS, Osmar Vilas BOAS, and Alexandre Magno SEBBENN
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herdabilidade ,melhoramento genético ,Pinus ,seleção genética ,variação genética ,genetic improvement ,genetic variation ,heritability ,genetic selection ,Forestry ,SD1-669.5 - Abstract
Pinus caribaea var. hondurensis é uma das espécies do gênero Pinus mais plantadas nas regiões tropicais por apresentar ótima adaptação às condições de solo e clima, ter rápido crescimento, boa forma do tronco e madeira de boa qualidade. A espécie é utilizada principalmente para serraria e produção de celulose e papel. O objetivo deste estudo foi estimar parâmetros genéticos para caracteres de crescimento em um teste de progênies de polinização aberta de Pinus caribaea var. hondurensis em Assis, Estado de São Paulo. O teste foi instalado em maio de 1987, na Floresta Estadual de Assis, no delineamento experimental látice triplo 4 x 5, com 17 tratamentos (16 progênies e uma testemunha experimental), quatro repetições e parcelas de dez plantas em linha, no espaçamento de 3 x 3 m. Foram medidos os caracteres altura total de plantas ‒ ALT e o diâmetro à altura do peito ‒ DAP aos 21 anos de idade. A análise de variância detectou diferenças significativas a 5% de probabilidade entre progênies para a variável altura. O coeficiente de variação genético para altura de plantas foi de 18,4%, e 9,2% para o DAP. A estimativa do coeficiente de herdabilidade para a média de progênies foi de 0,30 para a altura e 0,02 para o DAP, maiores do que as obtidas para herdabilidade dentro de progênies e em nível de plantas individuais. Para estabelecer um pomar de sementes por mudas, sugere-se adotar o caráter altura e uma intensidade de seleção de 6%, o que corresponde a selecionar os 32 melhores indivíduos. Isso resultou em um ganho genético de 2,8% para a ALT e no tamanho efetivo populacional ( Ne ) de 15 indivíduos não parentes e não endogâmicos. A correlação genética entre os caracteres altura e DAP foi baixa e não significativa, sugerindo pequenas possibilidades de seleção indireta entre os caracteres. Pinus caribaea var. hondurensis is the most common species of the genus Pinus planted in tropical regions of Brazil, due its adaptation to soil and climate conditions, fast growth, good trunk form and quality of the wood. The species is mainly used for sawmill and pulp and paper industry. The aim of this study was to estimate genetic parameters for growth traits in a open-pollinated progeny test established in the Floresta Estadual de Assis, state of São Paulo. The test was implanted in May 1987, using a 4 x 5 triple lattice design with 17 treatments (16 progenies and a control), four replications and ten plants in row per plot, spaced 3 x 3 m. The total tree height ‒ ALT and the diameter at breast height ‒ DBH were measured at 21 years of age. The analysis of variance detected significant difference among progenies for tree height. The coefficients of genetic variation were 18.4% for tree height and 9.2% for DBH. The estimates of heritability coefficient for progeny means were 0.30 for height and 0.02 for DBH, higher than the estimates obtained at individual plant level and within progenies. To establish a seedling seed orchard, it is suggested to consider the trait height and a selection intensity of 6%, which corresponds to the selection of the best 32 individuals. This procedure resulted a genetic gain of 2.8% for ALT and a population effective size ( ) of 15 unrelated and not inbred individuals. The genetic correlation between traits ALT and DBH was low and not significant, suggesting small chances of indirect selection between traits.
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- 2015
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23. Investigation of Copy Number Variation in Children with Conotruncal Heart Defects
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Carla Marques Rondon Campos, Evelin Aline Zanardo, Roberta Lelis Dutra, Leslie Domenici Kulikowski, and Chong Ae Kim
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Cardiopatias Congênitas ,Variação Genética ,DNA ,Tronco Arterial ,Comunicação Interventricular ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Congenital heart defects (CHD) are the most prevalent group of structural abnormalities at birth and one of the main causes of infant morbidity and mortality. Studies have shown a contribution of the copy number variation in the genesis of cardiac malformations. Objectives: Investigate gene copy number variation (CNV) in children with conotruncal heart defect. Methods: Multiplex ligation-dependent probe amplification (MLPA) was performed in 39 patients with conotruncal heart defect. Clinical and laboratory assessments were conducted in all patients. The parents of the probands who presented abnormal findings were also investigated. Results: Gene copy number variation was detected in 7/39 patients: 22q11.2 deletion, 22q11.2 duplication, 15q11.2 duplication, 20p12.2 duplication, 19p deletion, 15q and 8p23.2 duplication with 10p12.31 duplication. The clinical characteristics were consistent with those reported in the literature associated with the encountered microdeletion/microduplication. None of these changes was inherited from the parents. Conclusions: Our results demonstrate that the technique of MLPA is useful in the investigation of microdeletions and microduplications in conotruncal congenital heart defects. Early diagnosis of the copy number variation in patients with congenital heart defect assists in the prevention of morbidity and decreased mortality in these patients.
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- 2015
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24. Clinical and genetic analysis of patients with Juvenile Amyotrophic Lateral Sclerosis
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Souza, Paulo Victor Sgobbi de [UNIFESP] and Oliveira, Acary Souza Bulle [UNIFESP]
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Esclerose Amiotrófica Lateral ,Doenças Neuromusculares ,Neurologia ,Transtornos heredodegenerativos do Sistema Nervoso ,Variação genética - Abstract
Formas atípicas da Esclerose Lateral Amiotrófica (ELA) representam apresentações clínicas com evolução, história natural, achados laboratoriais e neurofisiológicos pouco habituais em relação às formas típicas do adulto. A ELA juvenil representa forma bastante rara, pouco reconhecida em nosso meio, caracterizada por sintomas e sinais motores iniciados antes dos 25 anos de idade, com base monogênica definida em 40% dos casos. O perfil clínico e genético associado à ELA juvenil é desconhecido no cenário brasileiro. Objetivos: Caracterização dos aspectos clínicos e genéticos relacionados a pacientes brasileiros com ELA juvenil e análise de novas correlações clínico-genéticas em casos de início juvenil de ELA. Métodos: Foi realizado estudo clínico retrospectivo pela análise de registros médicos de 1350 pacientes acompanhados em um centro de referência em Doença do Neurônio Motor/ELA, entre janeiro de 2001 e dezembro de 2020. Foram considerados critérios de inclusão: (i) pacientes com formas provável ou definitiva da ELA em forma típica ou atípica, segundo critérios de El Escorial revisado e de Awaji-Shima; (ii) sinais e sintomas motores iniciados antes dos 25 anos de idade; (iii) exclusão de outros diagnósticos diferenciais; (iv) não preencher critérios de exclusão; e (v) estar de acordo com o Termo de Consentimento Livre e Esclarecido ou de Assentimento. Foram critérios de exclusão: (i) sintomas e sinais motores iniciados após os 25 anos; (ii) indivíduos assintomáticos, com alteração genética isolada relacionada à ELA; (iii) critério diagnóstico ELA possível de acordo com critérios neurofisiológicos de El Escorial revisado e de Awaji- Shima; (iv) diagnóstico de outra forma de Doença do Neurônio Motor; e (v) ausência de consentimento ou assentimento. Foram revisados aspectos clínicos, laboratoriais, neurofisiológicos, radiológicos, pontuações nas escalas de estadiamento de King’s College e Milano-Torino e na ALS Functional Rating Scale-Revised (ALSFRS-R), perfil cognitivo captado pelo teste cognitivo e comportamental ECAS, bem como análise de variantes genéticas observadas em painéis genéticos de sequenciamento de próxima geração ou no sequenciamento completo do exoma. Resultados: Total de 61 pacientes preencheram critérios de inclusão para ELA juvenil, sendo 31 pacientes do sexo feminino. A idade média ao início dos sintomas foi de foi de 16,6 (±7,7) anos e ao diagnóstico de 26,3 (±12,1) anos. Um total de 72% dos casos de ELA juvenil apresentava início espinal e dez pacientes foram a óbito no período do estudo. Contexto definidor de ELA familiar foi observado em 40,9% dos pacientes e consanguinidade familiar em 31,1% dos casos. Foram observadas as seguintes associações com formas monogênicas de ELA: SPG11 (n=12), ALS2 (n=7), SOD1 (n=5), FUS (n=3), ZFYVE26 (n=3), VAPB (n=3), SPAST (n=2), KIF5A (n=2), PRKRA (n=2), SPTLC1 (n=1), SORL1 (n=1), WASHC5 (n=1), BSCL2 (n=1), GARS (n=1), SETX (n=1), ERCC2 (n=1), MAPT (n=1) e PLA2G6 (n=1). Dois casos se relacionaram a dupla associação genética: SPG11 com TBK1; e SPAST com SPG7. A base genética monogênica permaneceu indeterminada em 19,7% dos casos. Menores pontuações iniciais no ALSFRS-R foram vistas nas formas associadas aos genes SOD1, ALS2, PRKRA e FUS. Taxas de queda anual do ALSFRS-R superiores à média foram vistas nas formas FUS e ALS2, e inferiores nas formas KIF5A, SPG11 e PRKRA. As menores pontuações médias do ECAS foram vistas nos casos associados aos genes FUS e SPG11 e as maiores ao gene SPAST. Leucoencefalopatia, atrofia cortical e de corpo caloso foram as alterações mais comumente observadas nos estudos radiológicos. Conclusões: O perfil clínico e genético da ELA juvenil é bastante complexo e heterogêneo no Brasil, sendo preponderantes as formas ligadas aos genes SPG11, ALS2 e SOD1. Novas associações genéticas puderam ser estabelecidas a partir deste estudo, mostrando importante sobreposição genética com as paraparesias espásticas hereditárias, neuropatias hereditárias e outras condições neurodegenerativas. Disfunção cognitiva é achado frequente e pouco reconhecido na ELA juvenil. Atypical forms of Amyotrophic Lateral Sclerosis (ALS) represent unusual clinical presentation with distinct clinical course, natural history, laboratory and neurophysiological findings in relation to typical adult-onset ALS. Juvenile ALS represents an extremely rare and underrecognized condition with motor symptoms and signs starting before age 25 years and showing a definite monogenic basis in 40% of cases. Clinical and genetic profile associated with juvenile ALS is unknown in Brazil. Objectives: Characterization of clinical and genetic aspects of Brazilian patients with juvenile ALS and establishment of new genetic correlations. Methods: A retrospective clinical study was performed with the analysis of medical records from 1350 patients followed-up in a specialized center in Motor Neuron Disease/ALS, in the period between January 2001 and December 2020. Inclusion criteria: (i) patients with typical or atypical ALS forms with probable or definitive diagnosis of ALS, regarding the revised El Escorial and Awaji-Shima criteria; (ii) onset of motor symptoms before age 25 years; (iii) exclusion of other differential diagnosis; (iv) patients do not fulfill exclusion criteria; and (v) agreement with the informed consent form. Exclusion criteria: (i) onset of motor symptoms after age 25 years; (ii) asymptomatic individuals, with isolated abnormal genetic findings related to ALS; (iii) patients with possible diagnosis of ALS according to El Escorial and Awaji-Shima criteria; (iv) confirmed diagnosis of other Motor Neuron Disease; and (v) disagreement with the informed consent form. Clinical, laboratory, neurophysiological and neuroimaging aspects, individual performance in King’s College and Milano-Torino staging scale and in ALS Functional Rating Scale-Revised, cognitive and behavioral profile in ECAS scale, and analysis of genetic variants obtained in next- generation sequencing or Whole-exome sequencing tests were all evaluated. Results: 61 patients with juvenile ALS fulfilled inclusion criteria (31 female patients). Mean age at motor symptom-onset was 16,6 (±7,7) years and at diagnosis of 26,3 (±12,1) years. A total of 72% of cases presented with spinal-onset ALS and ten patients died during the study period. Familial ALS was observed in 40,9% of cases and familial consanguinity was present in 31,1% of cases. Genetically-defined juvenile ALS cases included: SPG11 (n=12), ALS2 (n=7), SOD1 (n=5), FUS (n=3), ZFYVE26 (n=3), VAPB (n=3), SPAST (n=2), KIF5A (n=2), PRKRA (n=2), SPTLC1 (n=1), SORL1 (n=1), WASHC5 (n=1), BSCL2 (n=1), GARS (n=1), SETX (n=1), ERCC2 (n=1), MAPT (n=1) and PLA2G6 (n=1). Two cases presented with double genetic association: SPG11 with TBK1; and SPAST with SPG7. Undetermined monogenic basis was observed in 19,7% of cases. Lower initial scores in ALSFRS-R has been observed in patients with juvenile ALS associated with SOD1, ALS2, PRKRA and FUS genes. Higher year decrease taxes of ALSFRS-R were seen in FUS and ALS2 gene cases, and lower taxes in KIF5A, SPG11 and PRKRA gene forms. The lower mean values in ECAS score has been observed in FUS and SPG11 gene subtypes and the higher mean values with SPAST gene variants. Leukoencephalopathy, cortical atrophy, and thin corpus callosum were the most common abnormal radiological findings observed. Conclusion: Clinical and genetic profile of juvenile ALS is complex and heterogeneous in Brazil, with the main presentations associated with SPG11, ALS2 and SOD1 genes. New genetic associations could be established with this study, disclosing the importance of genetic overlap with Hereditary spastic paraplegia, Inherited neuropathies, and other neurodegenerative disorders. Cognitive dysfunction is a common and underrecognized complication of juvenile ALS.
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- 2022
25. Biallelic UBE4A loss-of-function variants cause intellectual disability and global developmental delay
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Mais Hashem, Jonathan A. Bernstein, Carlos Frederico Martins Menck, Brandon J. Willis, Aziza Chedrawi, Heather M. Byers, Matthew T. Wheeler, Arne Jahn, Danyllo Oliveira, João Paulo Kitajima, Fowzan S. Alkuraya, Lynette Bower, Elizabeth Spiteri, Fabíola Paoli Monteiro, Mayana Zatz, Hessa S. Alsaif, Brian C. Leonard, Uirá Souto Melo, Nataliya Di Donato, Devon Bonner, Ala Moshiri, Fernando Kok, Louise Lanoue, Kevin Dumas, Kevin C K Lloyd, Fernando Ribeiro Gomes, Felipe de Souza Leite, and Davi Jardim Martins
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0301 basic medicine ,VARIAÇÃO GENÉTICA ,Developmental Disabilities ,Ubiquitin-Protein Ligases ,Neurological function ,Dwarfism ,030105 genetics & heredity ,Bioinformatics ,Short stature ,Mice ,03 medical and health sciences ,Intellectual Disability ,Exome Sequencing ,Intellectual disability ,Animals ,Humans ,Medicine ,Global developmental delay ,Child ,Genetics (clinical) ,Exome sequencing ,Loss function ,business.industry ,Syndrome ,medicine.disease ,Human genetics ,Hypotonia ,Phenotype ,030104 developmental biology ,Muscle Hypotonia ,medicine.symptom ,business - Abstract
Purpose To identify novel genes associated with intellectual disability (ID) in four unrelated families. Methods Here, through exome sequencing and international collaboration, we report eight individuals from four unrelated families of diverse geographic origin with biallelic loss-of-function variants in UBE4A. Results Eight evaluated individuals presented with syndromic intellectual disability and global developmental delay. Other clinical features included hypotonia, short stature, seizures, and behavior disorder. Characteristic features were appreciated in some individuals but not all; in some cases, features became more apparent with age. We demonstrated that UBE4A loss-of-function variants reduced RNA expression and protein levels in clinical samples. Mice generated to mimic patient-specific Ube4a loss-of-function variant exhibited muscular and neurological/behavioral abnormalities, some of which are suggestive of the clinical abnormalities seen in the affected individuals. Conclusion These data indicate that biallelic loss-of-function variants in UBE4A cause a novel intellectual disability syndrome, suggesting that UBE4A enzyme activity is required for normal development and neurological function.
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- 2021
26. Effectiveness of breeding selection for grain quality in common bean
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Danilo Valente Almeida, P. A. S. Dias, Leonardo Cunha Melo, Helton Santos Pereira, Patrícia Guimarães Santos Melo, POLIANNA ALVES SILVA DIAS, UNVERSIDADE FEDERAL DE UBERLÂNDIA, MG, DANILO VALENTE ALMEIDA, UNIVERSIDADE FEDERAL DE GOIÁS, PATRICIA GUIMARAES SANTOS MELO, UNIVERSIDADE FEDERAL DE GOIÁS, HELTON SANTOS PEREIRA, CNPAF, and LEONARDO CUNHA MELO, CNPAF.
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Genotype-environment interaction ,Cooking quality ,Yields ,Beans ,Iron ,Crude fiber ,Genetic stability ,Melhoramento Genético Vegetal ,Seleção ,Biology ,Agronomy ,Variação Genética ,Phaseolus Vulgaris ,Grain quality ,Grain yield ,Agronomy and Crop Science ,Feijão ,Selection (genetic algorithm) - Abstract
he aims of this study were to investigate the genetic variability and the genotype × environment interaction for quality and yield traits in common bean (Phaseolus vulgaris L.), to evaluate the degree of informativeness of the evaluations of grain quality in only one environment, to estimate genetic parameters for grain quality traits, and to select lines with superior grain quality. We evaluated 81 carioca common bean lines in preliminary line trials in several environments for nutritional, technological, and commercial quality and selected the 20 superior lines, which were evaluated in validation trials in nine environments. Individual and combined ANOVAs were performed for all the traits. Correlations were estimated between Fe and Zn concentrations and yield; adaptability and phenotypic stability were analyzed; and superior genotypes were selected based on the Mulamba & Mock index. It is possible to increase the Fe, Zn, and crude protein concentrations and reduce cooking time; however, increasing crude fiber is a challenge. Preliminary evaluation of the quality traits in only one environment was effective and sufficient for selection of genotypes superior in Fe concentration, crude fiber, crude protein, and cooking time; and genetic gains can be obtained from selection for these traits. Genetic and phenotypic correlations were observed between Fe and Zn concentrations. The lines CNFC 16627, CNFC 16518, CNFC 16602, CNFC 16615, and CNFC 16520 are superior based on the selection index and are recommended for breeding for grain quality in carioca common bean. Made available in DSpace on 2021-09-10T15:05:59Z (GMT). No. of bitstreams: 1 cs.pdf: 249903 bytes, checksum: ef9f181f778db91831b3f000202db229 (MD5) Previous issue date: 2021
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- 2020
27. Covid-19: aspectos do diagnostico e vigilância genômica das linhagens circulantes no estado do Ceará
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Lima, Luina Benevides and Montenegro, Raque Carvalho
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Variação Genética ,SARS-CoV-2 ,Prevalência ,Genoma ,Pandemias - Abstract
SARS-CoV-2 virus emerged in December 2019 and has rapidly spread around the world. In January 2020, the first genome sequence was available, with approximately 30000 bases. Since then, the virus accumulated diverse mutations, leading to the emergence of different lineages. In this work, a review was carried out on the gold standard method for SARS-CoV-2 detection, addressing the factors that may contribute to the achievement of false negative or false positive results. An in-silico analysis identified the formation of primer and/or probe homodimers in the China CDC (ORF1ab target), Charité (E gene) and HKU (N gene) diagnostic kits; and heterodimers in the China CDC (N gene), Charité (E gene), and US CDC (N2 and N3 genes) kits, these being the kits more likely to generate false results. In this work, 34 genomes of SARS-CoV-2 were sequenced, from samples obtained between July/20 and July/21 in Ceará. These sequences, analyzed together with sequences deposited in the GISAID database in this period for Ceará, revealed the occurrence of 8 lineages between March and December 2020. The most prevalent strain was B.1.1.33 (n=45), followed by B.1 (n=21), B.1.212 (n=19) and P.2 (n=14). In this work, 202 SNVs (Single Nucleotide Variant) were identified among the 34 sequenced genomes. Mutations with >40% prevalence include p.F924F and p. P4715, both in ORF1ab; p.D614G in the S gene; p.I33T in ORF6; p.R203K, p.R203R, p.G204R and p.I292T in the N gene. The only mutation detected in 100% of our sequenced genomes was D614G in the S gene. Genomic surveillance of circulating lineages allows us to monitor the pandemic, assisting in government decision-making and in monitoring the virus. In GISAID database, few SARS-CoV-2 genomes come from samples collected in the first months of the pandemic in Ceará. Our data aim to fill these gaps and contribute to a better understanding of SARS-CoV-2 variants genetic diversity and their prevalence in Ceará.state. O vírus SARS-CoV-2 foi identificado em dezembro de 2019 e se espalhou rapidamente pelo mundo. Em janeiro de 2020, o primeiro genoma estava disponível, com aproximadamente 30000 bases. Desde então, o vírus acumulou diversas mutações, levando ao surgimento de diferentes linhagens. Neste trabalho, foi realizada uma revisão sobre o método padrão ouro para a detecção do SARS-CoV-2, abordando diversos fatores que podem contribuir para a obtenção de resultados falsos negativos ou falsos positivos. Uma análise in silico identificou a formação de homodímeros de iniciadores e/ou sondas nos kits de diagnóstico China CDC (ORF1ab target), Charité (gene E) e HKU (gene N); e heterodímeros nos kits China CDC (gene N), Charité (gene E), e US CDC (genes N2 e N3), sendo esses os kits mais passíveis de gerarem resultados falsos. Neste trabalho, também foi realizado o sequenciamento de 34 genomas do SARS-CoV-2, isolados entre julho/20 e julho/21 no Ceará. Essas sequencias, analisadas em conjunto com sequencias depositadas no banco de dados GISAID neste período para o Ceará, revelaram a ocorrência de 8 linhagens entre março e dezembro de 2020. A linhagem mais prevalente foi a B.1.1.33 (n=45), seguida por B.1 (n=21), B.1.212 (n=19) e P.2 (n=14). Além da identificação das linhagens circulantes, esse trabalho proporcionou a identificação de 202 SNVs (Variantes de Nucleotídeo Único), entre os 34 genomas sequenciados. Mutações com >40% de prevalência incluem p.F924F e p. P4715, ambos em ORF1ab; p.D614G no gene S; p.I33T em ORF6; p.R203K, p.R203R, p.G204R e p.I292T no gene N. A única mutação detectada em todos os 34 genomas sequenciados foi a D614G no gene S. A vigilância genômica das linhagens circulantes nos permite monitorar a pandemia, auxiliando na tomada de decisões do governo e no rastreamento do vírus. No banco de dados GISAID, poucos genomas de SARS-CoV-2 são provenientes de amostras coletadas nos primeiros meses da pandemia no Ceará. Nossos dados visam preencher essas lacunas e contribuir para o melhor entendimento da diversidade genética das variantes e sua prevalência no estado do Ceará.
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- 2022
28. O mosaico genético além das populações europeias
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Marla Mendes de Aquino, Eduardo Martin Tarazona Santos, Victor Octavio Borda Pua, Maria Bernadete Lovato, Michel Satya Naslavsky, Carlos Eduardo Guerra Amorim, and Maria Luiza Petz Erler
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Genética Populacional ,Variação Genética ,population genetics ,genetic diversity ,neglected populations - Abstract
CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior The inclusion of human diversity in genetic studies contributes not only to a better understanding of our history but also to solving biomedical issues such as disease susceptibility, response to medical treatments and elucidation of complex traits. Geneticists have known for more than a decade that focusing on people of European ancestry exacerbates health disparities, and genetic advances can not be applied to those who need it most. Thus, this thesis presents works that contribute to changing this scenario, seeking to increase the visibility of the genetic richness that exists beyond populations of European ancestry. Here, I present research findings that include admixed and non-admixed populations with diverse ancestries, from South American natives to Africans and Asians. The first chapter is a mini-review of the history of humanity on the American continent, told by the genetics of modern and ancient populations, from the arrival of the first humans to the process of admixture, where we also present complementary discussions about the updates of the discoveries made since the publication of this article in 2020. In chapter 2, we present an article published by my group that solves important questions in the Andean and Amazon genetic history, through methods of population genetics. In chapter 3, I devote myself to the methods of scanning these adaptive signatures and create a multi-methodological pipeline for the study of natural selection to minimize the chance of obtaining false positives. Chapter 4 is an important addition to genetically neglected populations and would be a complementary part of our chapter 1, where we applied advances with polygenic risk scores to admixed populations such as the Brazilian. Exploring the diversity of human genetics is not only important for neglected populations, but it is also essential to increase the capacity to make new discoveries. Thus, in the attachments, we present five articles exemplifying how the genomic mosaic of non-European populations is a rich source of information from different perspectives, including medical, historical and evolutionary aspects. The work presented here shows in different ways how the effort to generate data from underrepresented populations makes important contributions to science. A inclusão da diversidade humana nos estudos genéticos contribui não apenas para a melhor compreensão da nossa história, mas tambem para resolver questões biomédicas, como suscetibilidade a doenças, resposta a tratamentos médicos e elucidação de fenótipos complexos. Geneticistas sabem há mais de uma década, que o foco em pessoas de ancestralidade europeia agrava as disparidades de acesso a saúde por parte das populações globais, e os avanços genéticos não são levados a quem mais precisa. Assim, esta tese apresenta trabalhos que contribuem para mudar esse cenário, buscando aumentar a visibilidade da riqueza genética que existe além das populações de ancestralidade europeia. Aqui, apresento resultados de pesquisas que incluem populações miscigenadas e não-miscigenadas com ancestralidades diversas, desde nativos sulamericanos, até africanos e asiáticos. O primeiro capítulo é uma mini revisão da história da humanidade no continente americano, contada pela genética de populações atuais e antigas, desde a chegada dos primeiros seres humanos até o processo de miscigenação, onde tambem apresento discussões complementares sobre às atualizações das descobertas feitas desde a publicação desse artigo em 2020. No capitulo 2, apresento um artigo publicado pelo meu grupo que resolve questões importantes da história genética andina e amazônica, por meio de métodos de genética de populações. No capitulo 3 me aprofundo nos métodos de varredura dessas assinaturas adaptativas e crio um pipeline de estudo de seleção natural multi-metodológico para diminuir ao maximo a chance de se obter falsos-positivos. O Capitulo 4 é uma adição importante para às populações geneticamente negligenciadas e seria uma parte complementar ao nosso capitulo 1, onde eu aplico os avanços com scores poligenicos de riscos às populaçoes miscigenadas, como a Brasileira. Explorar a diversidade da genética humana não é importante apenas para as populações negligenciadas, mas também é essencial para aumentar a capacidade de fazer novas descobertas. Assim, apresento nos anexos, cinco artigos exemplificando como o mosaico genômico de populações não europeias é uma rica fonte de informações de diferentes perspectivas, incluindo aspectos médicos, históricos e evolutivos. O trabalho aqui apresentado mostra de diversas formas como o esforço de geração de dados a partir de populações sub-representadas traz importantes contribuições para a ciência.
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- 2022
29. Mitochondrial D-loop sequence variation among Central Javanese Duck in Indonesia.
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Susanti, R., Iswari, Retno Sri, Fibriana, Fidia, and Sari, Retno Ika
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Copyright of Acta Scientiarum: Animal Sciences is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2017
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30. Genetic diversity between native and improved Cattleya walkeriana Gardner famous clones.
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Tambarussi, Evandro Vagner, Veasey, Elizabeth Ann, Menezes, Lou, Ibañes, Bruna, Lombardi, Kátia Cylene, and Vencovsky, Roland
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PLANT product biotechnology , *CATTLEYAS , *PLANT hybridization , *ALLELES in plants , *PLANT genetics - Abstract
The aim of this study was to evaluate the genetic diversity among native plants and some individuals obtained from crosses with unknown genealogy of C. walkeriana as well as C. loddigesii and C. nobilior and to advance towards solving the question of the genetic purity of the "Orchidglade" clone. Eight microsatellite loci were used to evaluate the genetic diversity between individuals of C. walkeriana. Microsatellites were not efficient in determining the genetic diversity between C. walkeriana groups (native and improved). The difficulty in determining the genetic distance between the different genotypes can be attributed to the complex mating system of the species and to a weak genetic barrier that facilitates the development of hybrids. Our analysis revealed smaller genetic distances between the "Orchidglade", "Equilab", "Kenny" and "Pedentive" clones and the species C. loddigesii and C. nobilior. Native C. walkeriana plants were genetically more distant from the C. loddigesii and C. nobilior species. [ABSTRACT FROM AUTHOR]
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- 2017
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31. DNA barcode regions for differentiating Cattleya walkeriana and C. loddigesii.
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Rivera-Jiménez, Hernando, Rossini, Bruno César, Tambarussi, Evandro Vagner, Veasey, Elizabeth Ann, Ibanes, Bruna, and Marino, Celso Luis
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Copyright of Acta Scientiarum: Biological Sciences is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2017
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- View/download PDF
32. Assessment of genetic diversity in the Russian olive (Elaeagnus angustifolia) based on ISSR genetic markers Avaliação da diversidade genética em Oliva Russa (Elaeagnus angustifolia) com base em marcadores genéticos ISSR
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Leila Sadat Asadiar, Fatemeh Rahmani, and Abbas Siami
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Dendrograma ,Oliva russa ,Variação genética ,Marcador molecular ,Dendrogram ,Russian olive ,Genetic variation ,Molecular marker ,Agriculture (General) ,S1-972 - Abstract
Elaeagnus is a Eurasian tree with 77 species worldwide. In this study, ISSR markers were used to establish the level of genetic relationships and polymorphism across nine genotypes of Elaeagnus angustifolia collected from 9 different regions of West Azarbaijan province. The ISSR analysis with 11 anchored primers also generated 116 scorable loci, of which 92 were polymorphic (79.3%). The estimated Jaccard similarity coefficient ranged from 0.44 to 0.76 for the ISSR markers. Cluster analysis was carried out, based on the Unweighted Pair Group Method with Arithmetic Averages (UPGMA) and the dendrogram drawn with the help of the NTSYSpc 2.02 software. The analysis revealed 5 main clusters for the ISSR data. According to our results, there is a relatively high genetic distance across E. angustifolia genotypes in the West Azarbaijan province of Iran. Furthermore, it could be inferred that ISSR markers are suitable tools for the evaluation of genetic diversity and relationships within the Elaeagnus genus.A Elaeagnus é uma árvore da Eurásia com 77 espécies em todo o mundo. Neste estudo, marcadores ISSR foram usados para estabelecer o nível de relações genéticas e polimorfismo entre nove genótipos de Elaeagnus angustifolia, coletados em 9 diferentes regiões da província do Azerbaijão Ocidental. A análise ISSR, com 11 primers ancorados, também gerou 116 loci contáveis, dos quais 92 polimórficos (79,3%). O coeficiente de similaridade de Jaccard estimado, variou de 0,44 a 0,76 para os marcadores ISSR. A análise de agrupamento foi realizada com base no Método não-ponderado de pares não-agrupados, com médias aritméticas (UPGMA), e a dendrograma elaborada com a ajuda do software NTSYSpc 2.02. A análise revelou cinco grupos principais para os dados ISSR. De acordo com nossos resultados, há uma distância genética relativamente alta entre genótipos de E. angustifolia na província de Azarbaijan Ocidental no Iran. Além disso, pode-se inferir que os marcadores ISSR são ferramentas adequadas para a avaliação da diversidade genética e as relações dentro do gênero Elaeagnus.
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- 2013
33. SELECTION OF FISÁLIS POPULATIONS FOR HIBRIDIZATIONS, BASED ON FRUIT TRAITS
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NICOLE TREVISANI, RODOLFO SCHMIT, MATTHEUS BECK, ALTAMIR FREDERICO GUIDOLIN, and JEFFERSON LUÍS MEIRELLES COIMBRA
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Physalis peruviana L. ,Variação genética ,Seleção ,Plant culture ,SB1-1110 - Abstract
ABSTRACT The objective of this study was to characterize the genetic variability in fisális populations and select promising parents based on fruit traits. The experimental design consisted of randomized blocks, with six populations. Five plants per treatment were sampled. The evaluated traits were fruit weight, capsule weight, 1000- seed weight and fruit diameter. The data were subjected to multivariate analysis of variance with error specification between and within (p
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- 2016
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34. Antifungal resistance on Sporothrix species: an overview
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Priscilla Maciel Quatrin, Marcos Roberto Alves Ferreira, Alexandre Meneghello Fuentefria, Daiane F. Dalla Lana, Adelina Mezzari, and Stefanie Bressan Waller
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medicine.medical_specialty ,Antifungal Agents ,Itraconazole ,Esporotricose ,Melaninas ,Microbial Sensitivity Tests ,Farmacorresistência fúngica ,Expressão gênica ,Biology ,Variacao genetica ,medicine.disease_cause ,Microbiology ,Genetic diversity ,Fungal Proteins ,03 medical and health sciences ,Medical microbiology ,Drug Resistance, Fungal ,Amphotericin B ,Melanin ,Media Technology ,medicine ,Animals ,Humans ,Sporothrix species ,030304 developmental biology ,Voriconazole ,Clinical Microbiology - Review ,0303 health sciences ,Mutation ,Sporotrichosis ,030306 microbiology ,Sporothrix ,Antifungal resistance ,medicine.disease ,Terbinafine ,Gene expression ,medicine.drug - Abstract
INTRODUCTION: The treatment of human and animal sporotrichosis is often performed with antifungal agents; however, the emergence of antifungal-resistant strains of Sporothrix species has been reported. We aimed to discuss the ability of Sporothrix species in developing resistance to the conventional antifungals and mechanisms for this. METHODOLOGY: Published data on databases (PubMed, Science Direct, Google Scholar) were investigated using a combination of keywords from 2008 to 2019 by the StArt tool. RESULTS: The minimal inhibitory concentrations values based on the Clinical and Laboratory Standards Institute (CLSI) from eight references were classified according to the epidemiological cutoff values in wild-type or non-wild-type strains. In this way, non-wild-type S. schenckii and, mainly, S. brasiliensis isolates were recognized on itraconazole, amphotericin B, terbinafine, and voriconazole, which are strains that deserve more attention toward antifungal control, with a probable risk of mutation to antifungal resistance. Among the few reviewed studied on antifungal resistance, the melanin production capacity (DHN-melanin, L-DOPA melanin, and pyomelanin), the low genetic diversity due to the abnormal number of chromosomes, and the mutation in cytochrome P450 are some of the factors for developing resistance mechanism. CONCLUSIONS: The emergence of Sporothrix species with in vitro antifungal resistance was evidenced and the possible mechanisms for resistance development may be due to the melanin production capacity, genetic diversity and mutations in cytochrome P450. Further studies should be carried out targeting gene expression for the development of antifungal resistance on Sporothrix species in order to prospect new therapeutic targets for human and veterinary use.
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- 2020
35. Effect of size grading on the growth of pirarucu Arapaima gigas reared in earthen ponds
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A. F. Lima and ADRIANA FERREIRA LIMA, CNPASA.
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Specific growth ,0303 health sciences ,ved/biology ,Fish farming ,Significant difference ,ved/biology.organism_classification_rank.species ,Produção Pesqueira ,04 agricultural and veterinary sciences ,Aquatic Science ,Biology ,Oceanography ,Feed conversion ratio ,Arapaima gigas ,03 medical and health sciences ,Animal science ,Pirarucu ,Variação Genética ,Fish ponds ,040102 fisheries ,0401 agriculture, forestry, and fisheries ,Juvenile ,Tamanho ,Peixe ,030304 developmental biology - Abstract
Size grading is a common management practice in fish farming to minimize growth variability. Such practice has not been established for pirarucu Arapaima gigas. Therefore, the present study assessed the effect of size grading on the growth of pirarucu. Juvenile pirarucu were divided into three groups: ungraded fish (U: mean initial weight 1.12 kg), small fish (S: mean initial weight 0.81 kg), and large fish (L: mean initial weight 1.36 kg), and reared for 129 days (phase I) and 158 additional days (phase II), consecutively. No significant difference was observed in the final length, specific growth rate, biomass, survival and feed conversion rate between fish groups. Ungraded fish presented a greater decrease in the coefficient of variation for weight in phase I than in phase II. Size sorting resulted in significantly higher growth after 287 days of farming in the L-graded fish (9.49 kg, final weight), followed by the ungraded group (8.80 kg) and S-graded group (8.01 kg). However, the mean weight of pooled S- and L-graded fish was similar to the ungraded fish group in phase I and phase II, indicating that grading did not improve the general performance of pirarucu in captivity. Made available in DSpace on 2020-03-17T00:37:39Z (GMT). No. of bitstreams: 1 CNPASA2020lajar.pdf: 787820 bytes, checksum: b928c656748c056eddc119958a51f226 (MD5) Previous issue date: 2020
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- 2020
36. Early selection, optimization of gains and genetic diversity in progenies of Eucalyptus urophylla
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Oliveira Junior, José Carlos de [UNESP], Universidade Estadual Paulista (Unesp), Moraes, Mario Luiz Teixeira de [UNESP], and Pupin, Silvelise [UNESP]
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Wood quality ,Pomar de sementes por mudas ,Seleção individual ,Genetic variation ,Seedlings seed orchard ,Qualidade da madeira ,Variação genética ,Individual selection - Abstract
Submitted by José Carlos de Oliveira Junior (j.oliveira-junior@unesp.br) on 2022-04-04T20:51:54Z No. of bitstreams: 1 Dissertação José Carlos - E. urophylla.pdf: 1955749 bytes, checksum: 9adcb06fd910d021f0d9044b8e66179f (MD5) Approved for entry into archive by Joao Josue Barbosa (joao.barbosa@unesp.br) on 2022-04-05T18:23:43Z (GMT) No. of bitstreams: 1 oliveira_junior_jc_me_ilha.pdf: 1954267 bytes, checksum: d0422a3bc2c1e6596d27c8574bfe4340 (MD5) Made available in DSpace on 2022-04-05T18:23:43Z (GMT). No. of bitstreams: 1 oliveira_junior_jc_me_ilha.pdf: 1954267 bytes, checksum: d0422a3bc2c1e6596d27c8574bfe4340 (MD5) Previous issue date: 2022-02-22 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Grande produtor de eucalipto, o estado do Mato Grosso do Sul tem uma base genética restrita ao clone AEC 144, o que implica na busca de genótipos adequados à região. Para tanto, o melhoramento sob diferentes estratégias de seleção tem papel fundamental na escolha dos materiais, mas demandam recursos e tempo. Por isso, uma alternativa a fim de diminuir o tempo é imprescindível, como a seleção precoce, associada às ferramentas moleculares, para avaliar a melhor recombinação entre genitores e estimar parâmetros mais criteriosos, importantes para a formação de pomares de sementes por mudas (PSM) e fornecer matéria prima de qualidade para a produção de celulose e madeira para serraria. O objetivo desta dissertação foi de verificar a variação genética em um teste de progênies de segunda geração de Eucalyptus urophylla (TP2G-TP-EU), tanto para características de crescimento como diâmetro a altura do peito, (DAP) e altura, quanto para o módulo de elasticidade, pensando na qualidade da madeira para serraria. Além disso, também foram avaliados os ganhos esperados e a diversidade genética com diferentes estratégias de seleção, e a correlação genética entre DAP e altura para a seleção precoce, com o intuito de formar um PSM de segunda geração, ao indicar as melhores recombinações por DAP entre os genitores selecionados. O TP2G-TP-EU foi instalado em 2016 em Selvíria-MS, oriundo de um PSM com 298 progênies. Seu delineamento experimental é em blocos casualizados, com 23 progênies, 30 repetições, com uma planta por parcela, em espaçamento 3 x 1,5 m. A altura (m) e o DAP (cm) foram mensurados entre 2017 e 2021, e o módulo de elasticidade (MOEd), coletado somente em 2021, usando o Treesonic, aparelho capaz de medir o MOEd da madeira em pé. As estimativas dos componentes de variância e parâmetros genéticos foram obtidas por REML/BLUP. A partir do valor aditivo individual, foram estimados os ganhos genéticos esperados para cada estratégia de seleção (S1 - individual; S2 - entre e dentro de progênies e S3 - dentro). Houve diferença significativa quanto ao LRT para os caracteres avaliados. O maior ganho genético esperado, para o DAP, ocorreu na S1 (6,68%). Houve alta correlação entre altura e DAP, seja em idades iguais ou diferentes. A correlação da posição dos indivíduos ao longo dos cinco anos do TP foi moderada a elevada (> 59%), com destaque entre o quarto e o quinto ano (97%), indicativo de potencial para a prática de seleção precoce para o estabelecimento de um PSM de segunda geração. Os 10 melhores cruzamentos foram selecionados para clonagem, por possuírem DAP com 75% de produtividade a mais do que a média, com 17,7 cm superiores à média geral (de 22,83 cm). A diferença entre as estratégias foi alta, sem comprometer a perda de alelos conforme o avanço dos ciclos de seleção. Para o modelo de elasticidade da madeira, as herdabilidades individuais foram médias, indicando potencial para o melhoramento dessa variável. Concluindo, a seleção individual é uma boa estratégia a ser aplicada nesta população apresentando maiores ganhos genéticos esperados, dando avanços nos siclos de melhoramento. Eucalyptus major producer, Mato Grosso do Sul state has a restricted genetic base to AEC 144 clone, which implies suitable genotypes search to the region. Therefore, breeding under different selection strategies plays a fundamental role in materials' choice, and require resources and time. Thus, an alternative to reduce time is essential, such as early selection, associated with molecular tools, to evaluate the best recombination between parents and estimate more careful parameters, important for seedlings seed orchards (SSO) formation and provide quality raw material for pulp and wood for sawmills production. The aim of this dissertation was to verify genetic variation in an Eucalyptus urophylla second-generation progenies of Eucalyptus urophylla test (TP2G-TP-EU), for growth characteristics as diameter at breast height (DBH) and height, as for elasticity modulus, considering wood quality for sawmills. Furthermore, the expected gains and genetic diversity with different selection strategies were also evaluated, and also the genetic correlation between DBH and height for early selection, in order to form a second-generation SSO, by indicating best DBH recombinations between selected parents. TP2G-TP-EU was installed in 2016 at Selvíria-MS, from a SSO with 298 progenies. Its experimental design is in randomized blocks, with 23 progenies, 30 replications, one plant per plot, spaced 3 x 1.5 m. Height (m) and DBH (cm) were measured between 2017 and 2021, and elasticity modulus (MOEd) was collected only in 2021, with Treesonic, device capable of measuring standing wood MOEd. Variance components and genetic parameters estimates were obtained by REML/BLUP. Based on individual additive value, expected genetic gains for each selection strategy were estimated (S1 - individual; S2 - between and within progenies and S3 - within). There was a significant difference regarding LRT for the evaluated characters. The highest expected genetic gain for DAP occurred in S1 (6.68%). There was a high correlation between height and DBH, whether at the same or different ages. Individuals' position correlation over PT five years was moderate to high (> 59%), with emphasis between the fourth and fifth year (97%), indicative of potential for early selection practice for a second-generation SSO establishment. 10 best crosses were selected for cloning, as they had DBH with 75% more productivity than average, with 17.7 cm higher than general average (22.83 cm). Difference between strategies was high, without compromising alleles loss as the selection cycles advanced. For wood elasticity model, individual heritabilities were average, indicating potential for this character improvement. In conclusion, individual selection is a good strategy to be applied in this population, presenting greater expected genetic gains, giving advances in breeding cycles. FAPESP: 2020/02059-6
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- 2022
37. Evaluation of the influence of genetic variants in Cereblon gene on the response to the treatment of erythema nodosum leprosum with thalidomide
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Perpétua do Socorro Silva Costa, Miriãn Ferrão Maciel-Fiuza, Thayne Woycinck Kowalski, Lucas Rosa Fraga, Mariléa Furtado Feira, Luís Marcelo Aranha Camargo, Daniele Iop de Oliveira Caldoncelli, Maria Irismar da Silva Silveira, Lavínia Schuler-Faccini, and Fernanda Sales Luiz Vianna
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Leprosy, Lepromatous ,Microbiology (medical) ,pharmacogenomics ,Erythema Nodosum ,VARIAÇÃO GENÉTICA ,CRBN ,Leprosy, Multibacillary ,personalised medicine ,Humans ,Leprostatic Agents ,leprosy ,Thalidomide ,pharmacogenetics - Abstract
BACKGROUND Erythema nodosum leprosum (ENL) is an acute and systemic inflammatory reaction of leprosy characterised by painful nodules and involvement of various organs. Thalidomide is an immunomodulatory and anti-inflammatory drug currently used to treat this condition. Cereblon (CRBN) protein is the primary target of thalidomide, and it has been pointed out as necessary for the efficacy of this drug in others therapeutics settings. OBJECTIVES In this study, we aimed to evaluate the influence of CRBN gene variants on the dose of thalidomide as well as its adverse effects during treatment of ENL. METHODS A total of 103 ENL patients in treatment with thalidomide were included in this study. DNA samples were obtained from saliva and molecular analysis of CRBN gene were performed to investigate the variants rs1620675, rs1672770 and rs4183. Different genotypes of CRBN variants were evaluated in relation to their influence on the dose of thalidomide and on the occurrence of adverse effects. FINDINGS No association was found between CRBN variants and thalidomide dose variation. However, the genotypes of rs1672770 showed association with gastrointestinal effects (p = 0.040). Moreover, the haplotype DEL/C/T (rs4183/rs1672770/rs1620675) was also associated with gastrointestinal adverse effects (p = 0.015). MAIN CONCLUSIONS Our results show that CRBN variants affect the treatment of ENH with thalidomide, especially on the adverse effects related to the drug.
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- 2022
38. Genetic variability of Guzerat cattle raised in northern Brazil, based on pedigree analysis
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J.L. Ferreira, J.B.S. Ferraz, F.O. Bussiman, M.R. Rodrigues, R.S. Bueno, L.A. Sousa, M.E. Carvalho, H.D. Santos, R. Toniolli, S.Q.S. Mello, and L.F. Sousa
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generation interval ,General Veterinary ,VARIAÇÃO GENÉTICA ,inbreeding ,ancestor ,effective size ,founder - Abstract
Genealogical data comprised 45,711 animals born between 1901 and 2016, with 48,127 animals in the pedigree file. Population structure was analyzed in terms of pedigree completeness, individual inbreeding coefficient (F), generation interval (L), rate of inbreeding (ΔF), effective population size (Ne), effective number of founders (ff), and effective number of ancestors (fa). The herd initially consisted of 13 bulls and 14 cows, and there were variations in the number of selected bulls and cows throughout the analyzed period, with 2,575 bulls, 13,691 cows, and 45,711 births recorded at the end of 2016. In total, 48.81% of the cows had only one progeny. Most dams (47.59%) were between three and seven years old, with a mean L in the population of 7.9 years. According to the results, 52.75% of the cows, 44.92% of the bulls, and 63.71% of the calves of the Guzerat breed in the northern region of Brazil showed some degree of inbreeding, with small-magnitude coefficients (0.56, 0.83, and 0.71% for cows, bulls, and calves, respectively). This fluctuation did not hinder the genetic evolution of the herd in the region. The effective population size does not seem to compromise the maintenance of genetic variability in the breed.
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- 2022
39. Como testes genéticos identificam a origem dos seus antepassados? O Genoma USP explica [Depoimento]
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Zatz, Mayana
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VARIAÇÃO GENÉTICA - Published
- 2022
40. Genetic variability of conilon coffee population from cultivar ?ES8152? based on morphoagronomic variables
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SENRA, J. F. B., SILVA, J. A. da, FERRAO, M. A. G., ESPOSTI, M. D. D., MILHEIROS, I. S., FASSARELLA, K. M., JOÃO FELIPE BRITES SENRA, INSTITUTO CAPIXABA DE PESQUISA ASSISTÊNCIA TÉCNICA E EXTENSÃO RURAL, JOSIMAR ALEIXO DA SILVA, INSTITUTO CAPIXABA DE PESQUISA ASSISTÊNCIA TÉCNICA E EXTENSÃO RURAL, MARIA AMELIA GAVA FERRAO, CNPCa, MARLON DUTRA DEGLI ESPOSTI, INSTITUTO CAPIXABA DE PESQUISA ASSISTÊNCIA TÉCNICA E EXTENSÃO RURAL, IDALINA STURIÃO MILHEIROS, INSTITUTO CAPIXABA DE PESQUISA ASSISTÊNCIA TÉCNICA E EXTENSÃO RURAL, and KAMILA MACHADO FASSARELLA, INSTITUTO CAPIXABA DE PESQUISA ASSISTÊNCIA TÉCNICA E EXTENSÃO RURAL.
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Coffea Canephora ,Genotype ,Variação Genética ,Plant selection guides ,Variedade ,Plant breeding - Abstract
This study aimed to analyze the genetic variability of Coffea canephora population with 190 genotypes from cultivar ?ES8152?, based on morphoagronomic characteristics and vegetation index, to identify the most important characteristics for genetic divergence and compare them with commercial clones. The experiment was installed, in 2019, at the Bananal do Norte Experimental Farm/INCAPER, Cachoeiro de Itapemirim, ES, Brazil. The experiment was carried out in Federer?s augmented block design with three blocks, four common treatments (commercial clones A1, LB1, V8 and V12) and 190 regular treatments, genotypes from the seed production field of the conilon coffee cultivar ?ES8152?. At 24 months of age 14 morphoagronomic characteristics and vegetation index were evaluated. Descriptive analysis of the data, the estimation of the Standardized Euclidean Distance (ED) followed by the grouping by the methods of Tocher, UPGMA and principal coordinates, in addition to the relative importance of the characters estimated by the Singh methodology were performed. The most distant genotypes were 62 and 83 (ED=2.620) and the closest were 42 and 160 (ED=0.208). Genotype 83 stood out as the most distant among the others. The optimization and hierarchical groupings allowed the identification of genotypes 15, 81, 107 and 184 as similar to commercial clones. The discard analysis of variables recommended the elimination of the vegetation index and average internode length of the next diversity analysis. Principal coordinate analysis found phenotypic similarity of the genotypes 30, 81, 115, 141 and 163 with the clone V12, of the genotype 119 with the clone A1 and genotype 17 with clone LB1. The study, of morphoagronomic characters, allowed to detection the genetic diversity existing in the materials evaluated, indicating those with phenotypic similarity with the commercial clones, being possible the early identification of promising genotypes, agronomically superior, to start a breeding program for clonal selection, recurrent selection and controlled crosses to maximize heterosis. Made available in DSpace on 2022-08-25T13:20:45Z (GMT). No. of bitstreams: 1 Genetic-variability-of-conilon-coffee-population-from-cultivar.pdf: 1369713 bytes, checksum: d7b694376348a17e814b8f5f6eaab3ae (MD5) Previous issue date: 2022
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- 2022
41. Effects of genetic variations of MLCK2, AMPD1, and COL5A1 on muscle endurance
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Cem Horozoglu, Halid Emre Aslan, Ali Karaagac, Ozlem Kucukhuseyin, Tugce Bilgic, Solen Himmetoglu, Arezoo Gheybi, Ilhan Yaylim, Umit Zeybek, and Tıp Fakültesi
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Performance atlética ,Skeletal Muscle ,Skeletal muscle ,Genetic Variation ,Physical Therapy, Sports Therapy and Rehabilitation ,Variación genética ,Athletic Performance ,Rendimiento atlético ,Variação genética ,Músculo esquelético ,Athletic performance ,Orthopedics and Sports Medicine ,Genetic variation ,human activities - Abstract
Introduction: Although potential relationships with genetic variants of MLCK2, AMPD1 and COL5A1 have been detected in molecular studies evaluating sports performance from the genetic perspective, there are limited data in terms of muscle endurance and physical fitness. Materials and Methods: This study aimed to evaluate these variants in terms of lower limb muscle endurance and physical fitness in thirty-three soccer players. Genotypes were determined by High Resolution Melting (HRM) analysis in qPCR after genomic DNA was isolated from buccal swab samples from the participants. Measurements of lower limb muscle endurance, the dynamic leap and balance test (DLBT), and the standing broad jump test (SBJ) were taken for all the participants. Results: Greater height (p = 0.006), higher DLBT (p = 0.016) and SBJ (p = 0.033) scores, as well as greater left hip adduction (p
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- 2022
42. Rare CACNA1H and RELN variants interact through mTORC1 pathway in oligogenic autism spectrum disorder
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André Luíz Teles e Silva, Talita Glaser, Karina Griesi-Oliveira, Juliana Corrêa-Velloso, Jaqueline Yu Ting Wang, Gabriele da Silva Campos, Henning Ulrich, Andrea Balan, Mehdi Zarrei, Edward J. Higginbotham, Stephen W. Scherer, Maria Rita Passos-Bueno, and Andrea Laurato Sertié
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Cellular and Molecular Neuroscience ,Psychiatry and Mental health ,Calcium Channels, T-Type ,Multifactorial Inheritance ,Autism Spectrum Disorder ,VARIAÇÃO GENÉTICA ,Humans ,Genetic Predisposition to Disease ,Calcium Channels ,Mechanistic Target of Rapamycin Complex 1 ,Biological Psychiatry - Abstract
Oligogenic inheritance of autism spectrum disorder (ASD) has been supported by several studies. However, little is known about how the risk variants interact and converge on causative neurobiological pathways. We identified in an ASD proband deleterious compound heterozygous missense variants in the Reelin (RELN) gene, and a de novo splicing variant in the Cav3.2 calcium channel (CACNA1H) gene. Here, by using iPSC-derived neural progenitor cells (NPCs) and a heterologous expression system, we show that the variant in Cav3.2 leads to increased calcium influx into cells, which overactivates mTORC1 pathway and, consequently, further exacerbates the impairment of Reelin signaling. Also, we show that Cav3.2/mTORC1 overactivation induces proliferation of NPCs and that both mutant Cav3.2 and Reelin cause abnormal migration of these cells. Finally, analysis of the sequencing data from two ASD cohorts—a Brazilian cohort of 861 samples, 291 with ASD; the MSSNG cohort of 11,181 samples, 5,102 with ASD—revealed that the co-occurrence of risk variants in both alleles of Reelin pathway genes and in one allele of calcium channel genes confer significant liability for ASD. Our results support the notion that genes with co-occurring deleterious variants tend to have interconnected pathways underlying oligogenic forms of ASD.
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- 2022
43. The rate and role of pseudogenes of the Mycobacterium tuberculosis complex
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Naila Cristina Soler-Camargo, Taiana Tainá Silva-Pereira, Cristina Kraemer Zimpel, Maurício F. Camacho, André Zelanis, Alexandre H. Aono, José Salvatore Patané, Andrea Pires dos Santos, and Ana Marcia Sá Guimarães
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VARIAÇÃO GENÉTICA ,General Medicine - Abstract
Whole-genome sequence analyses have significantly contributed to the understanding of virulence and evolution of the Mycobacterium tuberculosis complex (MTBC), the causative pathogens of tuberculosis. Most MTBC evolutionary studies are focused on single nucleotide polymorphisms and deletions, but rare studies have evaluated gene content, whereas none has comprehensively evaluated pseudogenes. Accordingly, we describe an extensive study focused on quantifying and predicting possible functions of MTBC and Mycobacterium canettii pseudogenes. Using NCBI’s PGAP-detected pseudogenes, we analysed 25 837 pseudogenes from 158 MTBC and M. canetii strains and combined transcriptomics and proteomics of M. tuberculosis H37Rv to gain insights about pseudogenes' expression. Our results indicate significant variability concerning rate and conservancy of in silico predicted pseudogenes among different ecotypes and lineages of tuberculous mycobacteria and pseudogenization of important virulence factors and genes of the metabolism and antimicrobial resistance/tolerance. We show that in silico predicted pseudogenes contribute considerably to MTBC genetic diversity at the population level. Moreover, the transcription machinery of M. tuberculosis can fully transcribe most pseudogenes, indicating intact promoters and recent pseudogene evolutionary emergence. Proteomics of M. tuberculosis and close evaluation of mutational lesions driving pseudogenization suggest that few in silico predicted pseudogenes are likely capable of neofunctionalization, nonsense mutation reversal, or phase variation, contradicting the classical definition of pseudogenes. Such findings indicate that genome annotation should be accompanied by proteomics and protein function assays to improve its accuracy. While indels and insertion sequences are the main drivers of the observed mutational lesions in these species, population bottlenecks and genetic drift are likely the evolutionary processes acting on pseudogenes' emergence over time. Our findings unveil a new perspective on MTBC’s evolution and genetic diversity.
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- 2022
44. Fine genetic structure of Brazilian white Morada Nova hair sheep breed from semi-arid region
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Samuel Freitas Nunes, Josiel Ferreira, Samuel Rezende Paiva, Danielle Assis de Faria, José Ernandes Rufino de Sousa, Carlos Eduardo Alves Soares, Robson Mateus Freitas Silveira, Gerson Barreto Mourão, and Débora Andréa Evangelista Façanha
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Food Animals ,VARIAÇÃO GENÉTICA ,Animal Science and Zoology - Published
- 2022
45. Genetic diversity of dengue virus serotypes 1 and 2 in the State of Paraná, Brazil, based on a fragment of the capsid/premembrane junction region
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Ana Caroline Dalla Bona, Adriana Lacerda Twerdochlib, and Mário Antônio Navarro-Silva
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Infecção simultânea ,RT-PCR ,Flavivirus ,Variação genética ,Arctic medicine. Tropical medicine ,RC955-962 - Abstract
INTRODUCTION: The precise identification of the genetic variants of the dengue virus is important to understand its dispersion and virulence patterns and to identify the strains responsible for epidemic outbreaks. This study investigated the genetic variants of the capsid-premembrane junction region fragment in the dengue virus serotypes 1 and 2 (DENV1-2). METHODS: Samples from 11 municipalities in the State of Paraná, Brazil, were provided by the Central Laboratory of Paraná. They were isolated from the cell culture line C6/36 (Aedes albopictus) and were positive for indirect immunofluorescence. Ribonucleic acid (RNA) extracted from these samples was submitted to the reverse transcription polymerase chain reaction (RT-PCR) and nested PCR. RESULTS: RT-PCR revealed that 4 of the samples were co-infected with both serotypes. The isolated DENV-1 sequences were 95-100% similar to the sequences of other serotype 1 strains deposited in GenBank. Similarly, the isolated DENV-2 sequences were 98-100% similar to other serotype 2 sequences in GenBank. According to our neighbor-joining tree, all strains obtained in this study belonged to genotype V of DENV-1. The DENV-2 strains, by contrast, belonged to the American/Asian genotypes. CONCLUSIONS: The monitoring of circulating strains is an important tool to detect the migration of virus subtypes involved in dengue epidemics.
- Published
- 2012
- Full Text
- View/download PDF
46. Clinical variability in dystrophic epidermolysis bullosa and findings with scanning electron microscopy Variabilidade clínica em epidermólise bolhosa distrófica e achados de microscopia eletrônica de varredura
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Hiram Larangeira de Almeida Jr, Luciane Maria Alves Monteiro, Fernanda Mendes Goetze, Ricardo Marques e Silva, and Nara Moreira Rocha
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Dermatopatias vesiculobolhosas ,Epidermólise bolhosa distrófica ,Microscopia eletrônica de varredura ,Unhas ,Variação genética ,Epidermolysis bullosa dystrophica ,Genetic variation ,Microscopy, electron, scanning ,Nails ,Skin diseases ,vesiculobullous ,Dermatology ,RL1-803 - Abstract
In dystrophic epidermolysis bullosa, the genetic defect of anchoring fibrils leads to cleavage beneath the basement membrane and its consequent loss. A 46 year-old female patient presented blisters with a pretibial distribution associated with nail dystrophy. Her two children had hyponychia and anonychia, which affected all toe nails and the thumb, forefinger and middle finger. DNA sequencing identified in exon 75 of COL7A1 gene a pathologic mutation: c.6235G>A (p.Gly2079Arg). Immunomapping of a blister demonstrated collagen IV (basal membrane) in the blister roof and collagen VII in its floor, confirming dystrophic epidermolysis bullosa. Scanning electron microscopy of an inverted blister showed net-forming collagen attached to the blister roof . The variability found in this family has already been reported and confirms, on a clinical basis, the nail subtype as a dystrophic variant.Na epidermólise bolhosa distrófica, o defeito genético das fibrilas de ancoragem leva à clivagem abaixo da membrana basal com sua consequente perda. Uma paciente de 46 anos apresentava bolhas pré-tibiais associadas à distrofia ungueal. Seus dois filhos apresentavam hipo e anoníquia, afetando todas as unhas dos pododáctilos e dos primeiros, segundos e terceiros quirodáctilos. O sequenciamento de DNA identificou no exon 75 do gene COL7A1 uma mutação patológica: c.6235G>A (p.Gly2079Arg). O imunomapeamento identificou o colágeno IV no teto e colágeno VII no assoalho de uma bolha , confirmando o diagnóstico de epidermólise bolhosa distrófica. A microscopia eletrônica de varredura de um teto invertido de bolha demonstrou rede de colágeno aderida ao mesmo. A variabilidade clínica encontrada nessa família já foi escrita e confirma, que o subtipo ungueal das epidermólises bolhosas é uma forma distrófica.
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- 2012
- Full Text
- View/download PDF
47. Você conhece esta síndrome?
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Gleison Vieira Duarte and Rosângela Cunha
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Pacientes oligossintomáticos ,Paquioníquia congênita ,Queratina-17 ,Variação genética ,Dermatology ,RL1-803 - Abstract
A paquioníquia congênita é uma rara genodermatose da ceratinização, primeiramente descrita em 1906 por Jadassohn e Lewandowsky. Além de pouco conhecida, a variabilidade fenotípica e as formas oligossintomáticas dificultam o diagnóstico. Relatamos uma família com três gerações afetadas, até recentemente sem diagnóstico. A busca ativa por casos familiares em pacientes com quadro suspeito e a identificação de manifestações peculiares de seus subtipos, como esteatocistoma múltiplo, permitem diagnóstico clínico precoce. Além disso, oportunizam a orientação familiar e de prognóstico ao portador.
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- 2011
- Full Text
- View/download PDF
48. Avaliação de genótipos de mamoeiro com uso de descritores agronômicos e estimação de parâmetros genéticos
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Nágela Lazare Pereira Dias, Eder Jorge de Oliveira, and Jorge Luiz Loyola Dantas
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Carica papaya ,desenvolvimento de variedades ,melhoramento genético ,seleção de parentais ,variação genética ,Agriculture (General) ,S1-972 - Abstract
O objetivo deste trabalho foi avaliar descritores quantitativos e estimar parâmetros genéticos em genótipos de mamoeiro (Carica papaya). Foi instalado um experimento em blocos aumentados, para a avaliação de 27 genótipos, entre cultivares, variedades melhoradas e variedades locais, com o uso de 30 descritores relacionados à planta, folhas, flores, frutos e sementes. Após diversos ciclos de melhoramento, os genótipos ainda mostravam ampla variabilidade quanto aos descritores avaliados. A maior parte da variação fenotípica ocorreu em razão da variância genotípica. A herdabilidade variou de 60,48 a 99,05% e, em 80% dos casos, foi superior a 80,46%. A razão entre o coeficiente de variação genético e o ambiental foi maior do que a unidade para 63% das características. Há diferenças agronômicas suficientes para uso dos genótipos "per se" ou como parentais em programas de melhoramento, em razão de agregarem variação genética, qualidade de frutos e tipo agronômico.
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- 2011
- Full Text
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49. First insights into the genetic diversity of Mycobacterium tuberculosis strains in Salvador, Bahia State, Brazil Primeiro ensaio sobre diversidade genética das cepas de Mycobacterium tuberculosis em Salvador, Bahia, Brasil
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Aída Cristina do Nascimento Silva, Lucilaine Ferrazoli, Vera Simonsen, Joice Neves Reis, Susan Martins Pereira, Theomira Mauadie de Azevedo Carmo, Eduardo Luiz Andrade Mota, and Mitermayer Galvão Reis
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Tuberculose ,Epidemiologia Molecular ,Variação Genética ,Mycobacterium tuberculosis ,Tuberculosis ,Molecular Epidemiology ,Genetic Variation ,Medicine ,Public aspects of medicine ,RA1-1270 - Abstract
This study constitutes a first attempt to describe the genetic population structure of Mycobacterium tuberculosis circulating in Salvador, Bahia State, Brazil. A total of 56 confirmed cases of pulmonary tuberculosis, identified between March and June 2008, were analyzed using restriction fragment length polymorphism (IS6110-RFLP). The study population was characterized by a predominance of males (71.43%) over 30 years of age (68.75%). Forty-one isolates were found to belong to a single pattern (73.2%), while 15 (26.7%) were found in group patterns, forming six clusters. The higher level of diversity observed is much more suggestive of endogenous reactivation than recent transmission.Este é o primeiro estudo realizado na Bahia, Brasil, visando à descrição da estrutura da população genética circulante do Mycobacterium tuberculosis na cidade de Salvador. Um total de 56 casos confirmados de tuberculose pulmonar, identificados entre março e junho de 2008, foi analisado pelo método Restriction Fragment Lenght Polymorphism (IS6110-RFLP). A população de estudo foi caracterizada como a maioria do sexo masculino (71,43 %), idade acima de 30 anos (68,75%). Quarenta e um isolados (73,21%) com padrão único, enquanto 15 (26,75%) apresentaram padrões agrupáveis, formando seis clusters. A alta taxa de diversidade das cepas de M. tuberculosis observada é mais sugestiva de reativação endógena do que transmissão recente.
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- 2011
- Full Text
- View/download PDF
50. Variação genética, herdabilidades e ganhos na seleção para caracteres de crescimento e forma em teste de progênies de polinização aberta de Eucalyptus cloeziana. Genetic variation, heritability and genetic gains for growth and stem form traits in open-pollinated progenies test of Eucalyptus cloeziana.
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Christian Luiz Ferreira BERTI, Miguel Luiz Menezes FREITAS, Antônio Carlos Scatena ZANATTO, Eurípedes MORAIS, Mario Luiz Teixeira de MORAES, and Alexandre Magno SEBBENN
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coancestria ,Eucalyptus ,melhoramento florestal ,parâmetros genéticos ,tamanho efetivo ,variação genética ,coancestry ,tree breeding ,genetic parameters ,effective population size ,genetic variation. ,Forestry ,SD1-669.5 - Abstract
O objetivo deste estudo foi estimar parâmetros genéticos para caracteres de crescimento e forma em um teste de progênies de Eucalyptus cloeziana, com 24 anos de idade, estabelecido em Luiz Antônio, SP. O teste foi instalado com sementes de polinização aberta provenientes de 35 árvores matrizes oriundas de Helenvale e Cardwell St. Forest, Austrália. O delineamento experimental utilizado foi o de blocos ao acaso, com parcela composta por apenas uma planta, com 100 repetições. O ensaio foi mensurado aos 24 anos de idade para diâmetro à altura do peito - DAP, altura total, volume e forma. Foram detectadas diferenças significativas entre progênies para todos os caracteres avaliados. Foram detectados altos coeficientes de variação genética e herdabilidades para todos os caracteres estudados, o que demonstra um forte controle genético na herança destes e a possibilidade de se obter altos ganhos com a seleção massal e individual entre e dentro de progênies. Os ganhos esperados para plantios com 24 anos de idade, realizados em locais com as mesmas características ambientais de Luiz Antônio e com sementes coletadas após a seleção no teste de progênies, foram estimados em 42,92% para DAP, 16,82% para altura e 20,35% para forma.The aim of this study was to estimate genetic parameters for growth and stem form traits in a progenies test of Eucalyptus cloeziana, at 24 years of age, established in Luiz Antônio, SP. The trial was installed with open-pollinated seeds from 35 seed-trees from Helenvale and Cardwell St. Forest provenances, Australia. The trial was installed in a randomized block design, with single tree plots and 100 replications. The trial was measured at 24 years of age for diameter at breast height - DBH, total height, volume and stem form. Significant differences among progenies were obtained for all traits. High genetic coefficients of variation and heritabilities were detected for all traits, showing a strong genetic control in the traits and the possibility to obtain genetic gains by massal selection among and within progenies. The expected genetic gains for stands with 24 years of age, growing in sites with the same environmental characteristics of Luiz Antônio and with seeds collected after selection in the progeny test were estimated in 42.91% for DBH, 16.82% for height and 20.35% for stem form.
- Published
- 2011
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