Roles of thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH) in Vibrio parahaemolyticus

Vibrio parahaemolyticus is the leading cause of seafood borne bacterial gastroenteritis in the world, often associated with the consumption of raw or undercooked seafood. However, not all strains of V. parahaemolyticus are pathogenic. The thermostable direct haemolysin (TDH) or TDH-related haemolysi...

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Main Author: Pendru eRaghunath
Format: Article
Language:English
Published: Frontiers Media S.A. 2015-01-01
Series:Frontiers in Microbiology
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fmicb.2014.00805/full
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author Pendru eRaghunath
author_facet Pendru eRaghunath
author_sort Pendru eRaghunath
collection DOAJ
description Vibrio parahaemolyticus is the leading cause of seafood borne bacterial gastroenteritis in the world, often associated with the consumption of raw or undercooked seafood. However, not all strains of V. parahaemolyticus are pathogenic. The thermostable direct haemolysin (TDH) or TDH-related haemolysin (TRH) encoded by tdh and trh genes, respectively are considered major virulence factors in V. parahaemolyticus. However, about 10% of clinical strains do not contain tdh and/or trh. Environmental isolates of V. parahaemolyticus lacking tdh and/or trh are also highly cytotoxic to human gastrointestinal cells. Even in the absence of these hemolysins, V. parahaemolyticus remains pathogenic indicating other virulence factors exist. This mini review aims at discussing the possible roles of tdh and trh genes in clinical and environmental isolates of V. parahaemolyticus.
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spelling doaj.art-1169dceaa4a940e1832f917683714ee72022-12-21T18:37:01ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2015-01-01510.3389/fmicb.2014.00805126063Roles of thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH) in Vibrio parahaemolyticusPendru eRaghunath0Dr. VRK Women's Medical CollegeVibrio parahaemolyticus is the leading cause of seafood borne bacterial gastroenteritis in the world, often associated with the consumption of raw or undercooked seafood. However, not all strains of V. parahaemolyticus are pathogenic. The thermostable direct haemolysin (TDH) or TDH-related haemolysin (TRH) encoded by tdh and trh genes, respectively are considered major virulence factors in V. parahaemolyticus. However, about 10% of clinical strains do not contain tdh and/or trh. Environmental isolates of V. parahaemolyticus lacking tdh and/or trh are also highly cytotoxic to human gastrointestinal cells. Even in the absence of these hemolysins, V. parahaemolyticus remains pathogenic indicating other virulence factors exist. This mini review aims at discussing the possible roles of tdh and trh genes in clinical and environmental isolates of V. parahaemolyticus.http://journal.frontiersin.org/Journal/10.3389/fmicb.2014.00805/fullVirulencetrhenvironmental fitnesstdhV. parahaemolyticus
spellingShingle Pendru eRaghunath
Roles of thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH) in Vibrio parahaemolyticus
Frontiers in Microbiology
Virulence
trh
environmental fitness
tdh
V. parahaemolyticus
title Roles of thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH) in Vibrio parahaemolyticus
title_full Roles of thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH) in Vibrio parahaemolyticus
title_fullStr Roles of thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH) in Vibrio parahaemolyticus
title_full_unstemmed Roles of thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH) in Vibrio parahaemolyticus
title_short Roles of thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH) in Vibrio parahaemolyticus
title_sort roles of thermostable direct hemolysin tdh and tdh related hemolysin trh in vibrio parahaemolyticus
topic Virulence
trh
environmental fitness
tdh
V. parahaemolyticus
url http://journal.frontiersin.org/Journal/10.3389/fmicb.2014.00805/full
work_keys_str_mv AT pendrueraghunath rolesofthermostabledirecthemolysintdhandtdhrelatedhemolysintrhinvibrioparahaemolyticus