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

作者：Silva Irana Paim; Carneiro Camila de Souza; Fontes Saraiva Margarete Alice; Santos de Oliveira Thiago Alves; de Sousa Oscarina Viana; Evangelista Barreto Norma Suely^*

来源：Marine Pollution Bulletin, 2018, 131: 757-762.

DOI：10.1016/j.marpolbul.2018.05.007

• Antimicrobial susceptibility
• Exoenzymes
• Virulence
• Oysters

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%), beta-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 mu g and cephalothin (93%, MIC s 100 mu g). 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.

• 出版日期2018-6