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Antimicrobial resistance and potential virulence of Vibrio parahaemolyticus isolated from water and bivalve mollusks from Bahia, Brazil

Author:
Silva, Irana Paim, Carneiro, Camila de Souza, Saraiva, Margarete Alice Fontes, Oliveira, Thiago Alves Santos de, Sousa, Oscarina Viana de, Evangelista-Barreto, Norma Suely
Source:
Marine pollution bulletin 2018 v.131 pp. 757-762
ISSN:
0025-326X
Subject:
Bivalvia, Vibrio parahaemolyticus, ampicillin, amylases, antibiotic resistance, cephalothin, deoxyribonucleases, genes, human health, minimum inhibitory concentration, phenotype, phospholipases, risk, tissues, virulence, water pollution, Brazil
Abstract:
The aim of the present study was to verify the antimicrobial susceptibility profile and virulence factors of Vibrio parahaemolyticus isolated from water and bivalve mollusks. A high percentage of V. parahaemolyticus was isolated in natura, processed bivalves tissues, and surrounding water (75%, 20%, and 59%, respectively). The most potential virulence phenotype in V. parahaemolyticus isolates was amylase production (97%) followed by DNase (83%), phospholipase (70%), β-hemolytic activity (57%). The tdh and trh genes were not detected. Besides, a high antimicrobial resistance was observed for ampicillin (97%), minimum inhibitory concentration [MIC] = 400 μg and cephalothin (93%, MIC ≤ 100 μg). The absence of expression of tdh and trh virulence genes excluded the toxigenic potential of V. parahaemolyticus isolates; however, the high prevalence of antimicrobial resistance among the environmental strains is a risk to human health.
Agid:
5971410