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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 105, No. 2, 2010, pp. 229-232
Bioline Code: oc10040
Full paper language: English
Document type: Short Communication
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 105, No. 2, 2010, pp. 229-232

 en Occurrence and composition of class 1 and class 2 integrons in clinical and environmental O1 and non-O1/non-O139 Vibrio cholerae check for this species in other resources strains from the Brazilian Amazon
de Sá, Lena Lillian Canto; da Fonseca, Érica Lourenço; Pellegrini, Maíra; Freitas, Fernanda; Loureiro, Edvaldo Carlos Brito & Vicente, Ana Carolina Paulo

Abstract

This study identified and characterised class 1 and 2 integrons in clinical and environmental Vibrio cholerae check for this species in other resources O1 and non-O1/non-O139 strains isolated from the Brazilian Amazon. The aadA2 and aadA7 gene cassettes were found in class 1 integrons in two genotypes of environmental V. cholerae non-O1/non-O139. Empty integrons were found in strains from the Brazilian cholera epidemic. A class 2 integron was detected in one strain from the V. cholerae Amazonia lineage harbouring sat1 and aadA1 genes. All isolates were resistant to aminoglycosides, indicating aadA functionality. These findings suggest that environmental bacteria act as cassette reservoirs that favour the emergence of resistant pathogens.

Keywords
Vibrio cholerae, class 2 integron, Amazon

 
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