Caracterização molecular de Staphylococcus spp. coagulase-negativos isolados do molusco bivalve Anomalocardia brasiliana (GMELIN, 1791)

Detalhes bibliográficos
Ano de defesa: 2013
Autor(a) principal: BATISTA, Jacqueline Ellen Camelo lattes
Orientador(a): LIMA FILHO, José Vitor Moreira
Banca de defesa: PEIXOTO, Silvio Ricardo Maurano, MENDES, Emiko Shinozaki, SHINOHARA, Neide Kazue Sakugawa
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal Rural de Pernambuco
Programa de Pós-Graduação: Programa de Pós-Graduação em Ciência Animal Tropical
Departamento: Departamento de Morfologia e Fisiologia Animal
País: Brasil
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5052
Resumo: The species Anomalocardia brasiliana is found in abundance on the beaches of the Brazilian coast and much appreciated in Northeastern cuisine. This study aimed to characterize molecular enterotoxins and resistance gene mecA in Staphylococcus spp. isolates of coagulase-negative beef samples A. brasiliana in the metropolitan area of Recife, Brazil. Isolated from fresh samples (n = 9), collected in the resort of Mangue Seco, Igarassu-PE, were identified as Staphylococcus xylosus (4/9), Staphylococcus cohnii spp. urealyticus (4/9) and Staphylococcus sciuri (1/9). Among commercialized samples (n = 21) were identified Staphylococcus sciuri (16/21), Staphylococcus xylosus (4/21) and Staphylococcus lentus (1/21). The determination of antibiotic resistance profile was performed following the CLSI guidelines. The highest rates of resistance were observed in isolates from fresh samples against erythromycin (58.53%), penicillin (51.21%) and tetracycline (43.9%). Isolated from samples marketed presented greater resistance to oxacillin (55.3%) and penicillin (36.8%). All isolates were characterized as coagulase-negative and were resistant to oxacillin and / or cefoxitin and positive for the presence of mecA gene but phenotypically susceptible to vancomycin. Also, the genes for enterotoxins seg and seh were detected in 77,7% and 88,8% of isolates from environmental samples, versus 90.5% and 100% of the isolates of real samples, respectively. The results of this study reveal the presence of Staphylococcus coagulase-negative methicillin-resistant carriers of toxigenic genes in bivalve mollusk A. brasiliana. This is first report of Staphylococcus coagulase-negative methicillin-resistant bivalve mollusk in A. brasiliana.