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3. INFLUÊNCIA DA CAPACITAÇÃO DE MANIPULADORES DE ALIMENTOS NA QUALIDADE MICROBIOLÓGICA DE PRODUTOS FRACIONADOS EM UM HIPERMERCADO DE RIBEIRÃO PRETO/SP

Author

Souza, André Pereira de, primary, Lago, Naiá Carla Marchi de Rezende, additional, Marchi, Patrícia Gelli Feres de, additional, Araújo, Danielle Saldanha de Souza, additional, Messias, Cassio Toledo, additional, Silva, Lidianne Assis, additional, Medeiros, Luciana dos Santos, additional, and Queiroz, Adriano Melo de, additional

Published
2021
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5. Genetic Evidence for a Potentially New Pathogenic Leptospira sp. Circulating in Bats from Brazilian Amazon.

Author

Di Azevedo, Maria Isabel Nogueira, Verde, Rair de Souza, Ezepha, Camila, Carvalho-Costa, Filipe Anibal, D'Andrea, Paulo Sérgio, Medeiros, Luciana dos Santos, and Lilenbaum, Walter

Subjects
LEPTOSPIRA interrogans, LEPTOSPIRA, BIOLOGICAL evolution, BATS, POLYMERASE chain reaction, HAPLOTYPES
Abstract

Leptospirosis is a neglected zoonosis frequently reported worldwide, caused by a spirochete of the genus Leptospira. It is capable of infecting domestic animals, free-living animals, and humans. Among wild animals, the role of bats in the epidemiology of leptospirosis has been investigated but is far from being elucidated. The Amazonian biome has the ideal conditions for maintaining and disseminating leptospires and, despite efforts that have been made to better understand leptospires' occurrence in wild animals in the region, few studies aimed to explore and genetically characterize leptospires in bats. Based on this, the aim of the present study is to deeper investigate and genetically characterize leptospires detected in bats from the southwest Amazon. Animals were trapped by mist netting at five sites in the state of Acre, Brazil. Kidney samples were obtained and stored for molecular analysis. Polymerase chain reaction (PCR) was conducted first based on the LipL32 gene, and positive samples were submitted to rrs and secY-PCR and sequencing. Sequences were then submitted to phylogenetic analyses through multiple bioinformatic tools. The rrs sequences from the present study formed one single haplotype, different from any other previously deposited, grouped in a highly supported cluster with sequences from bats from Madagascar and China. The initial secY screening revealed no identity with previously deposited sequences. The phylogenetic trees revealed the sequences from the present study in an isolated branch, clearly separated from all previously known pathogenic Leptospira spp., suggesting the existence of a potentially undescribed species. The haplotype network including only leptospires from the Amazon region confirmed two new haplotypes from the same taxon unity, isolated from the others, with a probable origin of the species from L. noguchii. The characterization of this potentially new species in bats reinforces the complexity of the transmission dynamics of leptospires, including wild, periurban, and urban environments, emphasizing the need for an integrative look at leptospirosis vigilance within the context of One Health. [ABSTRACT FROM AUTHOR]

Published
2023
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6. Fatores de risco associados à ocorrência de espécies multirresistentes de Staphylococcus spp. isolados de mastite subclínica bovina na região norte do Brasil

Author

Ferreira, Lilian Bernardina, Israel, Larissa de Freitas Santiago, Rabello, Renata Fernandes, Souza, Guilherme Nunes de, Peruquetti, Rui Carlos, and Medeiros, Luciana dos Santos

Subjects
Staphylococcus, Multirresistência, Risk factors, Fatores de risco, Mastitis, Multidrug resistance, Mastite
Abstract

Staphylococcus bacteria are often associated with subclinical bovine mastitis. This study aimed to identify multiresistant Staphylococcus spp. associated with subclinical mastitis and the associated risk factors. Twenty-three dairy farms with a history of decrease in milk production, located in the lower Acre region, Brazil, were selected. An epidemiological questionnaire was provided in all farms. All animals were examined using the California Mastitis Test (CMT) and their milk samples were collected for bacterial culture. After isolation and identification, the disk diffusion antimicrobial susceptibility test was performed against nine classes of antimicrobials. Of the 339 cows examined using the CMT, 108 had mastitis. A total of 229 milk samples were collected from individual teats. MALDI-TOF MS found isolates belonging to eight species of Staphylococcus, in 101 of these samples. S. chromogenes (58.4%) demonstrated strongest resistance to the nine classes of antimicrobial active principles. Nineteen isolates with multidrug resistance phenotypic profile were identified. This phenotypic expression indicates wide circulation of resistant genes in this species. The presence of multidrug resistance in Staphylococcus spp. in this study was correlated with lack of water for cleaning the corral, which is a preventive factor, minimizing the transmission and persistence of pathogens in the farms. Bactérias do gênero Staphylococcus são frequentemente associadas a mastite bovina subclínica. O objetivo do presente estudo foi identificar as espécies de Staphylococcus caracterizadas fenotipicamente como multirresistentes, associadas a mastite subclínica e identificar os fatores de risco associados. Foram selecionadas 23 propriedades leiteiras com histórico de queda de produção, localizadas na região do baixo Acre, Brasil. Em todas as propriedades foram preenchido um questionário epidemiológico. Todos os animais foram submetidos ao California Mastitis Test (CMT) e amostras de leite foram coletadas para cultura bacteriana. Após isolamento e identificação, foi realizado o teste de suscetibilidade antimicrobiana por difusão de disco frente à nove classes de antimicrobianos. Ao todo, 339 vacas foram testadas pelo CMT identificando 108 animais com mastite. Foram coletadas 229 amostras de leite de tetos individuais. Destas, 101 apresentaram isolados pertencentes ao gênero Staphylococcus, distribuídas em oito espécies identificadas por MALDI-TOF. S. chromogenes (58,4%) foi a espécie mais frequente demonstrando resistência as nove classes de princípios ativos antimicrobianos. Foram identificados 19 isolados com perfil fenotípico de multirresistência. Esta expressão fenotípica indica a ampla circulação de genes de resistência nesta espécie. A presença de multirresistência em Staphylococcus neste estudo foi correlacionada com a ausência da implementação do manejo em linha de ordenha e ausência de água no curral para limpeza, que funcionam como fatores preventivos, minimizando a transmissão e persistência dos patógenos nas propriedades.

Published
2022

9. Small Mammals as Carriers/Hosts of Leptospira spp. in the Western Amazon Forest

Author

Medeiros, Luciana dos Santos, primary, Braga Domingos, Susan Christina, additional, Azevedo, Maria Isabel Nogueira Di, additional, Peruquetti, Rui Carlos, additional, de Albuquerque, Narianne Ferreira, additional, D'Andrea, Paulo Sérgio, additional, Botelho, André Luis de Moura, additional, Crisóstomo, Charle Ferreira, additional, Vieira, Anahi Souto, additional, Martins, Gabriel, additional, Teixeira, Bernardo Rodrigues, additional, Carvalho-Costa, Filipe Anibal, additional, and Lilenbaum, Walter, additional

Published
2020
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11. INFLUÊNCIA DA CAPACITAÇÃO DE MANIPULADORES DE ALIMENTOS NA QUALIDADE MICROBIOLÓGICA DE PRODUTOS FRACIONADOS EM UM HIPERMERCADO DE RIBEIRÃO PRETO/SP / INFLUENCE OF THE TRAINING OF FOOD HANDLERS ON THE MICROBIOLOGICAL QUALITY OF FRACTIONAL PRODUCTS IN A HYPERMARKET IN RIBEIRÃO PRETO /SP

Author

Souza, André Pereira de, primary, Lago, Naiá Carla Marchi de Rezende, additional, Marchi, Patrícia Gelli Feres de, additional, Araújo, Danielle Saldanha de Souza, additional, Messias, Cassio Toledo, additional, Silva, Lidianne Assis, additional, Medeiros, Luciana dos Santos, additional, and Queiroz, Adriano Melo de, additional

Published
2020
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13. PERFIL EPIDEMIOLÓGICO DAS AGRESSÕES CANINAS NOTIFICADAS NO MUNICÍPIO DE CRUZEIRO DO SUL, ACRE, DURANTE O PERÍODO DE 2007 A 2015

Author

Negreiros, Jayne Da Silva, primary, Souza, Soraia Figueiredo de, additional, Pelizzari, Charles, additional, Ribeiro, Vânia Maria França, additional, Pacheco, Acácio Duarte, additional, Medeiros, Luciana Dos Santos, additional, Silva, Tamyres Izarelly Barbosa da, additional, and Fernandes, Mayara Marques Pereira, additional

Published
2018
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