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IJEB Vol.45(09) [September 2007] >


Title: Pathogenicity, antibiotic susceptibility and genetic similarity of environmental and clinical isolates of Vibrio cholerae
Authors: Prabhu, D Immanual Gilwax
Pandian, R Selvaraj
Vasan, P Thirumalai
Keywords: Antibiotic susceptibility
Genetic similarity
Pathogenicity
RAPD
Vibrio cholerae
Issue Date: Sep-2007
Publisher: CSIR
Abstract: Isolates of Vibrio cholerae were obtained from clinical and environmental samples and the pathogenicity of these isolates was confirmed by hemolytic assay. The clinical isolates were more pathogenic than environmental isolates. Antibiotic susceptibility of V. cholerae to a set of antibiotics showed a marked variation. The environmental isolates exhibited more resistance to the antibiotics than clinical isolates. The plasmid curing technique was used to check the encoding of antibiotic resistance gene in genome. In both isolates, the resistance to vancomycin and co-trimaxazole was not mediated by plasmid and it may probably be encoded in genome. RAPD method was adopted to find out the variation in the genome of the clinical isolates and environmental isolates of V. cholerae. The genomic similarity pattern revealed that the environmental Ogawa isolates were closely related to clinical Ogawa isolates. This study confirmed the existence of the complex nature of V. cholerae in its pathogenicity, response to a set of antibiotics and genetic similarity.
Page(s): 817-823
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Source:IJEB Vol.45(09) [September 2007]

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