123 results on '"Amendoeira, Maria Regina Reis"'
Search Results
102. Serological screening and toxoplasmosis exposure factors among pregnant women in South of Brazil
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Spalding, Silvia Maria, primary, Amendoeira, Maria Regina Reis, additional, Klein, Carlos Henrique, additional, and Ribeiro, Luis Carlos, additional
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- 2005
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103. Soroprevalência de anticorpos anti-Toxoplasma gondii em bovinos e funcionários de matadouros da microrregião de Pato Branco, Paraná, Brasil
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Daguer, Heitor, primary, Vicente, Regiane Trigueiro, additional, Costa, Tatiana da, additional, Virmond, Maurício Paulo, additional, Hamann, Waldir, additional, and Amendoeira, Maria Regina Reis, additional
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- 2004
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104. Inquérito sorológico para a infecção por Toxoplasma gondii em ameríndios isolados, Mato Grosso
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Amendoeira, Maria Regina Reis, primary, Sobral, Cleide Aparecida Queiroz, additional, Teva, Antonio, additional, Lima, Josué Nazareno de, additional, and Klein, Carlos Henrique, additional
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- 2003
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105. Balantidium coli and other gastrointestinal parasites in captives non-human primates of the Rio de Janeiro, Brazil.
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Silva Barbosa, Alynne, Pissinatti, Alcides, Dib, Laís Verdan, Siqueira, Mayara Perlingeiro, Cardozo, Matheus Lessa, Fonseca, Ana Beatriz Monteiro, Barros Oliveira, Anderson, Silva, Fábio Alves, Uchôa, Claudia M. Antunes, Bastos, Otilio Machado Pereira, and Amendoeira, Maria Regina Reis
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BALANTIDIUM coli ,GASTROINTESTINAL diseases ,HELMINTHS ,SANITATION - Abstract
Background Parasites are agents of diarrhea in captive non-human primates ( NHP). To broaden information about those etiological agents in captive animals in Brazil, gastrointestinal parasites in captive NHP were researched in nurturing Centers of Rio de Janeiro State. Methods Fecal samples were collected from primates, of which 960 came from the Research Center (Cecal/Fiocruz) and 115 from the Primate Center ( CPRJ/Inea). The study involved species of the New World ( NW) primates and of the Old World ( OW). Results The estimated prevalence was 56.7%, of which 91.3% presented protozoans and 7.4% presented helminths. Statistical difference between the nurturing centers occurred in the overall value of parasitosis and in the isolated frequency of Balantidium coli and Entamoeba sp., especially in the samples of OW primates living in Cecal. Conclusions These results demonstrated the need for implements of sanitation programs in the sites for captive primates nurturing. [ABSTRACT FROM AUTHOR]
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- 2015
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106. Padronização de ensaio imunoenzimático para pesquisa de anticorpos das classes IgM e IgG anti-Toxoplasma gondii e comparação com a técnica de imunofluorescência indireta
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Uchôa, Cláudia Maria Antunes, primary, Duarte, Rosemere, additional, Laurentino-Silva, Valmir, additional, Alexandre, Giani Maria Coutinho, additional, Ferreira, Humberto Gomes, additional, and Amendoeira, Maria Regina Reis, additional
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- 1999
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107. Toxoplasma gondiiin domiciled dogs and cats in urban areas of Brazil: risk factors and spatial distribution
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Arruda, Igor Falco, Millar, Patricia Riddell, Barbosa, Alynne da Silva, Abboud, Luiz Claudio de Souza, dos Reis, Izabel Cristina, Moreira, Alex Sander da Cruz, Guimarães, Mariana Pedrosa de Paula, Amendoeira, Maria Regina Reis, Arruda, Igor Falco, Millar, Patricia Riddell, Barbosa, Alynne da Silva, Abboud, Luiz Claudio de Souza, dos Reis, Izabel Cristina, Moreira, Alex Sander da Cruz, Guimarães, Mariana Pedrosa de Paula, and Amendoeira, Maria Regina Reis
- Abstract
Toxoplasma gondiiis a highly prevalent zoonotic parasite in Brazil capable of infecting mammals and birds. The increase in the urban populations of pets and the narrowing of the human–animal relationship can facilitate the transmission of important public health zoonoses, such as toxoplasmosis. This study aimed to evaluate the frequency and spatial distribution of T. gondiiinfection and its risk factors in domiciled dogs and cats attended at the Jorge Vaitsman Institute, Rio de Janeiro. Serum samples from 400 dogs and 272 cats were evaluated by an indirect fluorescent antibody test (IFAT) for IgG anti-T. gondiiantibodies. Epidemiological questionnaires were used to interview the animals’ owners to identify risk factors for infection. Of the total, 34% (136/400) of dogs and 8.1% (22/272) of cats had anti-T. gondiiantibodies. Breed (OR: 2.10–95%, CI 1.27–3.46) was a risk factor for dogs, while sex (OR: 3.40–95%, CI 1.10–10.52) and homemade food consumption (OR: 8.49–95%, CI 2.48–29.05) were risk factors for cats. Offal consumption was considered a risk factor for both species evaluated (OR: 2.74–95%, CI 1.38–5.43 for dogs; OR: 7.66–95%, CI 1.24–47.29 for cats). The spatial analysis showed that T. gondiiseropositive animals were widely distributed in the metropolitan region of Rio de Janeiro state, with a concentration observed mainly in the west and north zones of Rio de Janeiro city. The results emphasize the importance of adopting prophylactic measures to control T. gondiitransmission in domiciled dogs and cats in Rio de Janeiro, contributing positively to public health.
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- 2021
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108. Indirect immunofluorescence(IgG and IgM) tests for toxoplasmosis on 203 persons, with no symptomatology suggesting the disease, located in the city of Rio de Janeiro. Serological follow up one to two years later.
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Amendoeira, Maria Regina Reis, primary and Coutinho, Sergio Gomes, additional
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- 1981
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109. Quantitative and qualitative assessment of changes in splenic tissue of mice with schistossomiasis and dyslipidemic
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Silva, Adriana Matias da, Silva, José Roberto Machado e, Neves, Renata Heisler, Machado, Ana Carolina Stumbo, and Amendoeira, Maria Regina Reis
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Histopathology. Morphometry. Stereology ,splenic architecture ,arquitetura esplênica ,esplenopatias ,morfometria ,hypercholeristemic chow ,histopatologia ,dieta hipercoleristêmica ,CIENCIAS BIOLOGICAS::PARASITOLOGIA [CNPQ] ,dislipidemia ,schistosoma mansoni ,estereologia - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-05T18:13:06Z No. of bitstreams: 2 Pre-textual 240512.pdf: 108054 bytes, checksum: bec373c6b5d3843a038f371d486408cc (MD5) Textual 240512.pdf: 8280166 bytes, checksum: 787e9d540b45c585bdc6389deeff9ddc (MD5) Made available in DSpace on 2021-01-05T18:13:06Z (GMT). No. of bitstreams: 2 Pre-textual 240512.pdf: 108054 bytes, checksum: bec373c6b5d3843a038f371d486408cc (MD5) Textual 240512.pdf: 8280166 bytes, checksum: 787e9d540b45c585bdc6389deeff9ddc (MD5) Previous issue date: 2012-04-27 The effect of the changes promoted by hypercholesterolemia and experimental schistosomiasis infection on splenic architeture has remained elusive. In this study, we investigated the qualitative and quantitative organization of the splenic tissue in the acute phase (ninth week) of Schistosoma mansoni infection of mice fed either a hypercholesterolemic (29% lipids) or a standard chow (12% lipids). Spleen volume was measured by Scherlis Method. Histological sections (5μm) were stained with hematoxylin-eosin, Lennert's Giemsa and Picrosirius. The splenic disorganization was evaluated by histopathology, morphometry and stereology. Our major findings demonstrated that both diet and infection determined perturbations in splenic compartments. Infected mice, regardless of diet, had larger spleen (Student s t-test, P=0.004) and disorganized splenic architecture than in corresponding uninfected mice, for which no histopathology was evident. The white pulp compartment was reduced, whereas red pulp and germinal center were enhanced (Student s t-test, P
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- 2012
110. Cryptosporidium in dairy calves in Rio de Janeiro State: Standardization of Molecular Techniques, Genotypic Characterization and Influence of Management in Infection
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Chambarelli, Melissa Carvalho Machado do Couto, Bomfim, Teresa Cristina Bergamo do, Ara?jo, Adauto Jos? Gon?alves de, Figueiredo, Beatriz Benner de, Figueiredo, Fabiano Borges, Meireles, Marcelo Vasconcelos, and Amendoeira, Maria Regina Reis
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filogenia ,calf ,t?cnicas moleculares ,Cryptosporidium ,bezerro, manejo ,phylogeny ,management ,molecular techniques ,Medicina Veterin?ria - Abstract
Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2020-05-09T00:20:26Z No. of bitstreams: 1 2012 - Melissa Carvalho Machado do Couto Chambarelli.pdf: 3091557 bytes, checksum: 7efb867e87d385ac736b15f4c5061363 (MD5) Made available in DSpace on 2020-05-09T00:20:26Z (GMT). No. of bitstreams: 1 2012 - Melissa Carvalho Machado do Couto Chambarelli.pdf: 3091557 bytes, checksum: 7efb867e87d385ac736b15f4c5061363 (MD5) Previous issue date: 2012-03-26 CNPq - Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico Bovine cryptosporidiosis is of great relevance for Brazilian livestock, especially in young animals. Calves infected by Cryptosporidium may present low productivity, eliminating a great amount of infectious forms in the environment, especially those with clinical diarrhea. The aims of this study were: compare two DNA extraction techniques using a commercial kit and a researchers adapted protocol; analyze several annealing temperatures used in the PCRNested reactions for the gene target 18S and GP60, in addition to two types of DNA fragments staining in agarose gel (ethidium bromide and gelred); determine the occurrence of Cryptosporidium species and subtypes in calves up to one year of age, throughout PCR technique for the gene targets 18S and GP60 and analyze the influence of management modifications in the percentage of infection in calves. The standardization results demonstrate a higher sensitivity of the commercial kit and gelred, with the establishment of new temperatures for a better performance of the applied techniques. After sequencing, three species of Cryptosporidium were observed infecting calves at different ages. At pre-weaning fase (< 2 months) 10% of animals were infected by C. parvum, while 15% and 2% of animals in post-weaning fase (? 2 months) were infected by C. andersoni and C. ryanae respectively. Moreover, it was also possible to notice in this study that the implementation of some changes at the farm management could be of great help for reducing the dissemination of the disease between the animals and the environmental contamination. A criptosporidiose bovina ? de grande relev?ncia para a pecu?ria brasileira, principalmente em animais jovens. Bovinos infectados com Cryptosporidium podem apresentar um baixo desempenho produtivo al?m de eliminar grande quantidade de formas infectantes no ambiente, especialmente aqueles que apresentam um quadro cl?nico de diarr?ia. Os objetivos do trabalho foram: comparar duas t?cnicas de extra??o de DNA utilizando um kit comercial e um protocolo adaptado por pesquisadores; analisar diversas temperaturas de anelamento para as rea??es de PCR-Nested para os genes alvo 18S e GP60, al?m de dois tipos de colora??o de fragmentos de DNA em gel de agarose (brometo de et?dio e gelred); determinar a ocorr?ncia de esp?cies e subtipos de Cryptosporidium em bezerros com at? um ano de idade, atrav?s da t?cnica de PCR para os genes alvos 18S e GP60 e analisar a influencia de modifica??es no manejo no percentual de infec??o em bezerros. Os resultados da padroniza??o demostraram uma maior grau de pureza do kit comercial, tendo sido ainda estabelecido novas temperaturas para uma otimiza??o das t?cnicas, al?m da maior sensibilidade e baixa toxicidade do corante gelred. Ap?s o sequenciamento foi observada a presen?a de tr?s esp?cies de Cryptosporidium infectando bezerros em diferentes faixas et?rias. Na fase pr?-desmame (< 2 meses) 10% dos animais encontravam-se infectados por C. parvum, enquanto que os bezerros na fase p?sdesmame (? 2 meses) apresentaram-se infectados por C. andersoni (15%) e C. ryanae (2%). Nesse estudo tamb?m foi observado que a implanta??o de algumas mudan?as no manejo da propriedade pode ser de grande ajuda na tentativa de diminuir a dissemina??o da doen?a entre os animais e reduzir a contamina??o ambiental.
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- 2012
111. Bacillus cereus: Isolation, Counting and Detection of enterotoxins by PCR in commercially roasted and ground coffee samples In Rio de Janeiro city
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Souza, Cyllene de Matos Ornelas da Cunha Corr?a de, Abrantes, Shirley de Mello Pereira, Amendoeira, Maria Regina Reis, Freitas, Sidinea Cordeiro de, Zamith, Helena Pereira da Silva, and Luchese, Rosa Helena
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Caf? ,contamination ,Bacillus cereus ,Ci?ncia e Tecnologia de Alimentos ,coffee ,contamina??o - Abstract
Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2020-08-21T00:56:40Z No. of bitstreams: 1 2011 - Cyllene de Matos Ornelas da Cunha Corr?a de Souza.pdf: 954640 bytes, checksum: acab6a0de78f1ddb78e58879f2020864 (MD5) Made available in DSpace on 2020-08-21T00:56:40Z (GMT). No. of bitstreams: 1 2011 - Cyllene de Matos Ornelas da Cunha Corr?a de Souza.pdf: 954640 bytes, checksum: acab6a0de78f1ddb78e58879f2020864 (MD5) Previous issue date: 2011-08-01 Coffee is one of the most appreciated drinks in the world. Coffee grounds are obtained from the fruit of a small plant that belongs to the genus Coffea. Coffea arabica and Coffea canephora robusta are the two species of highest commercial importance. They are more commonly known as arabica and robusta, respectively. Two-thirds of Coffea arabica plants are grown in South and Central America and Eastern Africa (the place of origin for this coffee species). Contamination with microorganisms has been a major factor affecting coffee quality, due to the method of harvest adopted in Brazil. Brazilian harvests are based on mixing fruits collected from the ground with those that fall on cloths. As the Bacillus cereus bacterium frequently uses soil as an environmental reservoir, it is easily capable of becoming a contaminant. In the current study, microbiological analysis and polymerase chain reaction (PCR) analysis of the toxicogenic profile of isolated strains were used to evaluate B. cereus contamination in commercial samples of ground and roasted coffee in the city of Rio de Janeiro. The results revealed a significant frequency of these enterotoxin genes in isolated strains, which were: The HBL (57%); HBL C (71%); HBL D (64%); The NHE (50%); NHE B (100%) ; NHE C (64%). Strains of B.thuringiensis were also found in 44% of the samples. O caf? ? uma das bebidas mais consumidas e apreciadas no mundo. O gr?o de caf? ? obtido da fruta da planta, um arbusto pequeno, pertencente ao g?nero Coffea. Duas esp?cies t?m import?ncia comercial: Coffea arabica e Coffea canephora robusta; conhecidas como arabica e robusta. Cerca de dois ter?os da esp?cie Coffea arabica cresce principalmente na Am?rica do Sul, Am?rica Central e Leste da ?frica (origem deste caf?). A incid?ncia de microrganismos tem sido um dos principais fatores envolvidos na qualidade do caf?, principalmente na modalidade de colheita e preparo adotada no Brasil, isto ?, a colheita baseada na mistura de frutos derri?ados no ch?o com os derri?ados no pano. A bact?ria Bacillus cereus, que utiliza freq?entemente o solo e o meio ambiente como reservat?rio pode ser adicionado a esta lista de microrganismos. No presente estudo, avaliouse a contamina??o de B. cereus em amostras de caf? torrado e mo?do comercializado na cidade do Rio de janeiro, atrav?s de an?lises microbiol?gicas e an?lise do perfil toxig?nico das cepas isoladas atrav?s da Rea??o em Cadeia da Polimerase (PCR), considerando-se os complexos HBL e NHE. Os resultados revelaram elevada freq??ncia desses genes de enterotoxinas nas cepas isoladas, que foram: HBL A (57%); HBL C (71%); HBL D (64%); NHE A (50 %); NHE B (100%); NHE C (64%). Cepas de B. thuringiensis foram encontradas em 44% das amostras analisadas.
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- 2011
112. Investigação da ocorrência da infecção por Toxoplasma gondii em bovinos destinados ao abate, oriundos da região da Zona da Mata Mineira, MG - aspectos epidemiológicos
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Fajardo, Hugo Vieira, D'ávila, Sthefane, Amendoeira, Maria Regina Reis, and Vasconcelos, Eveline Gomes
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Epidemiology ,Soro-epidemiologia ,Cattle raising ,CIENCIAS BIOLOGICAS::ZOOLOGIA::COMPORTAMENTO ANIMAL [CNPQ] ,RIFI ,Toxoplasmose ,Bovinos ,Toxoplasmosis ,Zona da Mata Mineira ,Foodborne parasites - Abstract
A toxoplasmose é uma zoonose mundialmente disseminada causada pelo protozoário intracelular obrigatório Toxoplasma gondii. Os felídeos são os únicos hospedeiros definitivos, pois neles ocorre a reprodução sexuada e eliminação de oocistos pelas fezes, enquanto que o homem, outros mamíferos e as aves são hospedeiros intermediários e não possuem esta característica, transmitindo a doença por via congênita ou principalmente quando sua carne é ingerida na alimentação por outros animais. O hábito alimentar do brasileiro e a grande importância econômica do país no cenário internacional da pecuária bovina de corte, objetivaram este trabalho a realizar um estudo soroepidemiológico da toxoplasmose bovina na Zona da Mata Mineira e detecção dos fatores de risco de infecção e disseminação do parasito entre os bovinos criados para o abate. Para isso, foram coletadas 1200 amostras de sangue de bovinos para análise sorológica, utilizando-se a técnica de reação de imunofluorescência indireta (RIFI); também foi feita uma visita às propriedades rurais de onde provinham estes animais abatidos, e realizado um questionário epidemiológico com os produtores rurais destes estabelecimentos, com perguntas que esclareciam algumas dúvidas sobre o manejo e condições sanitárias das propriedades em questão que poderiam influenciar e servir como fatores de risco no ciclo deste parasito. Encontramos uma prevalência de 2,68% de animais positivos analisados para anticorpos anti-T.gondii da classe IgG, e com relação aos fatores de risco, os que envolvem a atuação de um médico veterinário na criação, sinais clínicos da doença e presença de felinos nas propriedades obtiveram um destaque nos resultados encontrados como fatores com consideráveis níveis de significância estatística e correlação positiva com a soropositividade dos animais. The toxoplasmosis is a zoonose worldwide disseminated, caused by the obligatory intracellular protozoan Toxoplasma gondii. The felines are the only definitive hosts, because in this host the parasites can reproduce sexually and eliminate oocistos through the host feaces. The man kind, like other mammals, and also the birds are intermediary hosts, transmitting the toxoplasmosis congenitally or mainly when its meat is ingested by other animals. Brazilian’s food habit and the great economical importance of the country in the international cattle field are important factors that justify the investigation about the prevalence of toxoplasmosis in cattle. Therefore, the purpose of this work was to realize a seroepidemiologic study of the bovine toxoplasmosis at the Zona da Mata, in Minas Gerais. Looking forward to elucidate the risk factors of infection and insemination from the parasite in between the cattle designated to slaughter. For that, 1200 samples of cattle blood were collected for the serological analysis, using the indirect reaction of imunofluorescence technique (IRIF); visits to the rural properties where those animals came were also realized and on those occasions the rural producers from these properties responded to a epidemiological questionnaire with questions about the properties managing and sanitary conditions, that could act as risk factors of infection by T. gondii. Among the 1195 animals tested for IgG anti-T. gondii, using the IRIF technique 32 presented themselves seropositives, which means 2,68% of prevalecence. Bovines from 53 properties located in the Zona da Mata Mineira were analized. From these 53 properties, 17 (30,07%) showed one or more serologically positives animals for T. gondii. With respect to risk factors, the ones that involve the actuation of a Veterinary Doctor in the raising, clinical signs of the disease and the presence of felines in the properties got a highlight on the results found as factors with considerable levels of statistic significance and positive relations to the seropositivity of the animals.
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- 2011
113. Ocorrência da infecção por Toxoplasma gondii em Gallus gallus domesticus criados extensivamente para o consumo humano no município de Rio Bonito, Rio de Janeiro, Brasil
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Alves, Luciana Casartelli, Amendoeira, Maria Regina Reis, Bonna, Isabel Cristina Fábregas, Bomfim, Teresa Cristina Bergamo do, Menezes, Rodrigo Caldas, and Pacheco, Tânia Maria Valente
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Toxoplasmose Animal ,Bioensaio ,Galinhas ,Técnica Indireta de Fluorescência para Anticorpo ,Epidemiologia ,Toxoplasma - Abstract
Fundação Oswaldo Cruz. Instituto Nacional de Infectologia Evandro Chagas, Rio de Janeiro, Brasil As galinhas de criações extensivas são hospedeiros indicadores da contaminação ambiental por oocistos de Toxoplasma gondii, pois se alimentam no solo. No Rio de Janeiro, há relatos de alta prevalência de toxoplasmose em humanos, porém não há estudos na região das Baixadas Litorâneas. Sendo assim, o objetivo deste trabalho foi realizar o levantamento da ocorrência da infecção por T. gondii em galinhas domésticas criadas extensivamente para o consumo humano no município do Rio Bonito, Rio de Janeiro, Brasil. Com essa finalidade, foi realizada a pesquisa de anticorpos anti-T. gondii por meio de exame sorológico e também do parasito em tecidos dessas aves utilizando-se a técnica de bioensaio em camundongos. Para realização dos exames sorológicos foram utilizadas 234 galinhas provenientes de 24 criações extensivas de cinco bairros de Rio Bonito: Praça Cruzeiro, Cachoeira dos Bagres, Nova Cidade, Prainha e Boa Esperança. Amostras de sangue dessas aves foram coletadas para a realização de reação de imunoflurescência indireta (RIFI) para detecção de anticorpos anti-T. gondii. Além disso, os proprietários de cada criação responderam um questionário epidemiológico para estudo de associações entre variáveis e a infecção por T. gondii em galinhas pelo teste T, adotando p
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- 2009
114. The Search for Drugs Derived from Natural Products for Toxoplasma gondii Infection Treatment in the Last 20 Years - A Systematic Review.
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Marques-Santos F, Faria RX, and Amendoeira MRR
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- Humans, Antiprotozoal Agents pharmacology, Antiprotozoal Agents chemistry, Antiprotozoal Agents therapeutic use, Animals, Biological Products chemistry, Biological Products pharmacology, Biological Products therapeutic use, Toxoplasma drug effects, Toxoplasmosis drug therapy
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Introduction: Toxoplasmosis is a worldwide distributed zoonosis caused by Toxoplasma gondii (T. gondii ), an obligate intracellular protozoan. The infection in immunocompetent hosts usually progresses with mild or no symptoms. However, in immunocompromised individuals, this disease can cause severe or fatal symptoms., Method: Sulfadiazine and pyrimethamine are two drugs used as standard therapies for human toxoplasmosis. Although they do not cause chronic infection, they may cause hematological toxicity, hypersensitivity, intolerance, teratogenic effects, gastrointestinal disorders, and bone marrow suppression., Results: The limited effect, significant toxicity, and emerging resistance to current drugs available to treat T. gondii infections require investigating other effective, nontoxic, and well-tolerated alternatives. Medicinal plants are, traditionally, the most promising sources used to treat infectious diseases Conclusion: This review provides data on new therapeutic and prophylactic methods for T. gondii infection based on the use of extracts and/or compounds derived from natural products, which have been reported to be useful as alternative treatment options in the last 20 years., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)
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- 2024
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115. Factors associated to toxoplasmosis-related knowledge among pregnant women attending public health services in the municipality of Niterói, Rio de Janeiro, Brazil, 2013-2015.
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Moura FL, Goulart PR, Moura AP, Souza TS, Fonseca AB, and Amendoeira MR
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- Adolescent, Adult, Brazil, Cities, Consumer Health Information methods, Cross-Sectional Studies, Female, Humans, Maternal Health Services statistics & numerical data, Pregnancy, Primary Prevention, Socioeconomic Factors, Young Adult, Health Knowledge, Attitudes, Practice, Pregnant People, Toxoplasmosis, Congenital prevention & control
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Objective: to analyze the factors associated to toxoplasmosis-related knowledge among pregnant women attending public health services in the municipality of Niterói, Rio de Janeiro, Brazil., Methods: this is a cross-sectional study conducted with pregnant women assisted in eight health care units; data was collected using a standardized questionnaire, from April 2013 to February 2015., Results: among the 405 pregnant women interviewed, 173 (42.7%) knew about toxoplasmosis and, of those, 24.3% knew about it through friends; the proportion of pregnant women with toxoplasmosis-related knowledge increased with age (p<0.001), education level (p<0.001) and the number of pregnancies (p=0.031); the history of abortion was also associated with toxoplasmosis-related knowledge (p=0.019)., Conclusion: the variables 'age', 'education level', 'number of pregnancies' and 'abortion history' were important factors for toxoplasmosis-related knowledge among pregnant women assisted in the public health care sector of Niterói.
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- 2016
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116. Mapping of the environmental contamination of Toxoplasma gondii by georeferencing isolates from chickens in an endemic area in Southeast Rio de Janeiro State, Brazil.
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Casartelli-Alves L, Amendoeira MR, Boechat VC, Ferreira LC, Carreira JC, Nicolau JL, de Freitas Trindade EP, de Barros Peixoto JN, Magalhães Mde A, de Oliveira Rde V, Schubach TM, and Menezes RC
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- Animals, Brazil epidemiology, Environmental Pollution, Humans, Population Surveillance methods, Toxoplasmosis epidemiology, Water Supply, Chickens parasitology, Geographic Mapping, Poultry Diseases epidemiology, Toxoplasma isolation & purification, Toxoplasmosis, Animal epidemiology
- Abstract
The environmental contamination of Toxoplasma gondii in an endemic area in Brazil was mapped by georeferencing isolates from chickens in farms in the Southeast of the state of Rio de Janeiro. Tissue samples obtained from 153 adult chickens were analyzed by the mouse bioassay for T. gondii infection. These animals were reared free-range on 51 farms in the municipalities of Rio Bonito and Maricá. The ArcGIS kernel density estimator based on the frequency of T. gondii-positive chickens was used to map the environmental contamination with this parasite. A questionnaire was applied to obtain data on the presence and management of cats and the type of water consumed. Of the farms studied, 64.7% were found to be located in areas of low to medium presence of T. gondii, 27.5% in areas with a high or very high contamination level and 7.8% in non-contaminated areas. Additionally, 70.6% kept cats, 66.7% were near water sources and 45.0% were in or near dense vegetation. Humans used untreated water for drinking on 41.2% of the farms, while all animals were given untreated water. The intensity of environmental T. gondii contamination was significantly higher on farms situated at a distance >500 m from water sources (P=0.007) and near (≤500 m) dense vegetation (P=0.003). Taken together, the results indicate a high probability of T. gondii infection of humans and animals living on the farms studied. The kernel density estimator obtained based on the frequency of chickens testing positive for T. gondii in the mouse bioassay was useful to map environmental contamination with this parasite.
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- 2015
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117. Toxoplasmosis-related knowledge among pregnant and postpartum women attended in public health units in Niterói, Rio De Janeiro, Brazil.
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Millar PR, Moura FL, Bastos OM, Mattos DP, Fonseca AB, Sudré AP, Leles D, and Amendoeira MR
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- Antibodies, Protozoan blood, Brazil, Cross-Sectional Studies, Educational Status, Female, Humans, Immunoglobulin G blood, Interviews as Topic, Postpartum Period, Pregnancy, Health Knowledge, Attitudes, Practice, Pregnancy Complications, Parasitic diagnosis, Toxoplasma immunology, Toxoplasmosis diagnosis
- Abstract
The present study conducted a toxoplasmosis-related knowledge level survey with 400 pregnant and puerperal women attended in public health units in the municipality of Niterói, Rio de Janeiro. Only 111 (27.8%) women claimed to know about the disease. Most of them (n = 289; 72.2%) had never heard about toxoplasmosis nor knew how to prevent the infection by Toxoplasma gondii. A significant difference (p = 0.013) regarding the presence of anti-T. gondii IgG was observed between women who claimed to know about the disease and those who had never heard about it. These results highlight the importance of a systematic serological screening process for toxoplasmosis, as well as the importance of primary prevention by accurate information during prenatal care, an important Public Health action to be implemented.
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- 2014
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118. [Retinochoroiditis toxoplasmosis susceptibility and gene polymorphism].
- Author
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Albuquerque MC, Almeida Mda G, and Amendoeira MR
- Subjects
- Humans, Chorioretinitis immunology, Toxoplasmosis, Ocular immunology
- Published
- 2011
- Full Text
- View/download PDF
119. The IFN-gamma +874T/A gene polymorphism is associated with retinochoroiditis toxoplasmosis susceptibility.
- Author
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Albuquerque MC, Aleixo AL, Benchimol EI, Leandro AC, das Neves LB, Vicente RT, Bonecini-Almeida Mda G, and Amendoeira MR
- Subjects
- Adult, Aged, Case-Control Studies, Chorioretinitis genetics, Chorioretinitis immunology, Female, Gene Frequency, Genotype, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide, Rural Population, Toxoplasmosis, Ocular immunology, Young Adult, Chorioretinitis parasitology, Genetic Predisposition to Disease genetics, Interferon-gamma genetics, Toxoplasmosis, Ocular genetics
- Abstract
Toxoplasmosis is a worldwide zoonosis that generally produces an asymptomatic infection. In some cases, however, toxoplasmosis infection can lead to ocular damage. The immune system has a crucial role in both the course of the infection and in the evolution of toxoplasmosis disease. In particular, IFN-gamma plays an important role in resistance to toxoplasmosis. Polymorphisms in genes encoding cytokines have been shown to have an association with susceptibility to parasitic diseases. The aim of this work was to analyse the occurrence of polymorphisms in the gene encoding IFN-gamma (+874T/A) among Toxoplasma gondii seropositive individuals, including those with ocular lesions caused by the parasite, from a rural population of Santa Rita de Cássia, Barra Mansa, state of Rio de Janeiro, Brazil. Further, we verified which of these polymorphisms could be related to susceptibility to the development of ocular toxoplasmosis. This study included 34 individuals with ocular toxoplasmosis (ocular group) and 134 without ocular lesions (control group). The differences between A and T allele distributions were not statistically significant between the two groups. However, we observed that a higher frequency of individuals from the ocular group possessed the A/A genotype, when compared with the control group, suggesting that homozygocity for the A allele could enhance susceptibility to ocular toxoplasmosis in T. gondii infection.
- Published
- 2009
- Full Text
- View/download PDF
120. [Serological evaluation for detection of anti-Leishmania antibodies in dogs and cats in the district of Santa Rita de Cássia, municipality of Barra Mansa, State of Rio de Janeiro].
- Author
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Figueiredo FB, Bonna IC, Nascimento LD, Costa Td, Baptista C, Pacheco TM, Amendoeira MR, and Madeira Mde F
- Subjects
- Animals, Brazil epidemiology, Cat Diseases diagnosis, Cats, Dog Diseases diagnosis, Dogs, Female, Leishmaniasis, Cutaneous diagnosis, Leishmaniasis, Cutaneous epidemiology, Male, Antibodies, Protozoan blood, Cat Diseases epidemiology, Dog Diseases epidemiology, Leishmania immunology, Leishmaniasis, Cutaneous veterinary
- Abstract
From a canine case of american cutaneous leishmaniasis in the locality of Santa Rita de Cássia, municipality of Barra Mansa, Rio de Janeiro, a serological survey was performed on 177 dogs and 43 cats. Evaluation of the canine serum samples showed that 10% had a positive reaction in the indirect immunofluorescence test and 10.7% in the enzyme-linked immunosorbent assay. Among the feline serum samples tested, none of the animals had a positive reaction in the indirect immunofluorescence test and only one (2.4%) showed a positive reaction in the enzyme-linked immunosorbent assay. The detection of an autochthonous case of Leishmania braziliensis in Barra Mansa gives warning that a focus of american cutaneous leishmaniasis is possibly becoming established in this region.
- Published
- 2009
- Full Text
- View/download PDF
121. [Frequency of lesions suggestive of ocular toxoplasmosis among a rural population in the State of Rio de Janeiro].
- Author
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Aleixo AL, Benchimol EI, Neves Ede S, Silva CS, Coura LC, and Amendoeira MR
- Subjects
- Adolescent, Adult, Age Distribution, Aged, Aged, 80 and over, Animals, Brazil epidemiology, Child, Child, Preschool, Cross-Sectional Studies, Female, Humans, Infant, Infant, Newborn, Male, Middle Aged, Prevalence, Rural Population, Toxoplasmosis, Ocular diagnosis, Young Adult, Antibodies, Protozoan blood, Immunoglobulin G blood, Immunoglobulin M blood, Toxoplasma immunology, Toxoplasmosis, Ocular epidemiology
- Abstract
To determine the prevalence of ocular toxoplasmosis among the general population of the district of Santa Rita de Cassia, Barra Mansa, State of Rio de Janeiro, a cross-sectional study on 1,071 individuals was performed. These subjects underwent serological tests (anti-Toxoplasma IgG and IgM) and physical and ophthalmological examinations. The diagnosis of presumed ocular toxoplasmosis was based on clinical and serological criteria and the appearance of the retinochoroidal lesion. The lesions were classified into three morphological types: 1. Limits marked with a halo of hyperpigmentation and an area of central chorioretinal atrophy; 2. Hypopigmented halo and hyperpigmented central area; and 3. Hyperpigmented or hypopigmented. The prevalence of healed lesions compatible with ocular toxoplasmosis was 3.8% among the general population and 5.8% among individuals who were seropositive for Toxoplasma gondii (65.9% of the individuals evaluated). Type-1 lesions (41.5%), female sex (68.3%), peripheral lesions (58.5%) and lesions smaller than three disc diameters predominated.
- Published
- 2009
- Full Text
- View/download PDF
122. Detection of Toxoplasma gondii DNA by polymerase chain reaction in experimentally desiccated tissues.
- Author
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Terra MA, Bello AR, Bastos OM, Amendoeira MR, Coelho JM, Ferreira LF, and Araújo A
- Subjects
- Animals, DNA, Protozoan analysis, Female, Immunoenzyme Techniques, Mice, Mice, Inbred C57BL, Toxoplasma genetics, DNA, Protozoan isolation & purification, Dissection, Polymerase Chain Reaction methods, Toxoplasma isolation & purification
- Abstract
Despite toxoplasmosis being a common infection among human and other warm-blooded animals worldwide, there are no findings about Toxoplasma gondii evolutionary forms in ancient populations. The molecular techniques used for amplification of genetic material have allowed recovery of ancient DNA (aDNA) from parasites contained in mummified tissues. The application of polymerase chain reaction (PCR) to paleoparasitological toxoplasmosis research becomes a promising option, since it might allow diagnosis, acquisition of paleoepidemiological data, access to toxoplasmosis information related origin, evolution, and distribution among the ancient populations. Furthermore, it makes possible the analysis of parasite aDNA aiming at phylogenetic studies. To standardize and evaluate PCR applicability to toxoplasmosis paleodiagnostic, an experimental mummification protocol was tested using desiccated tissues from mice infected with the ME49 strain cysts, the chronic infection group (CIG), or infected with tachyzoites (RH strain), the acute infection group (AIG). Tissues were subjected to DNA extraction followed by PCR amplification of T. gondii B1 gene. PCR recovered T. gondii DNA in thigh muscle, encephalon, heart, and lung samples. AIG presented PCR positivity in encephalon, lungs, hearts, and livers. Based on this results, we propose this molecular approach for toxoplasmosis research in past populations.
- Published
- 2004
- Full Text
- View/download PDF
123. [Serological survey of Toxoplasma gondii infection in isolated Amerindians, Mato Grosso].
- Author
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Amendoeira MR, Sobral CA, Teva A, de Lima JN, and Klein CH
- Subjects
- Adolescent, Adult, Age Distribution, Aged, Animals, Brazil epidemiology, Cats, Child, Female, Humans, Immunoglobulin M blood, Male, Middle Aged, Prevalence, Seroepidemiologic Studies, Sex Distribution, Toxoplasmosis diagnosis, Antibodies, Protozoan blood, Indians, South American, Toxoplasma immunology, Toxoplasmosis epidemiology
- Abstract
This study determined the occurrence of the antibodies anti-Toxoplasma gondii among the Enawenê-Nawê, an indigenous population of Mato Grosso. These inhabit a vast wild area, with rare contacts with non-Indians. They do not keep domestic animals, including cats. Their diet is based on insects, cassava, corn, honey and mushrooms, they do not consume meat, except fish. Based on the above, serologic tests ELISA-IgG and indirect fluorescent antibody test for IgG/IgM were performed. From 148 samples, 80.4% positive for IgG by ELISA or indirect fluorescent antibody test. No IgM reagent cases were detected. In that group the seropositivity rates increased significantly with age from 50% to 95%. Having analyzed their customs and habits, together with the high seropositivity found, it is suggested that the presence of wild felines in the vicinity of the village and areas where water collects could play an important role as an infection source, contaminating soil and consequently insects and mushrooms consumed by the Indians.
- Published
- 2003
- Full Text
- View/download PDF
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