Related Experiment Video
Updated: May 7, 2026
08:03
Quantifying Vibrio cholerae Colonization and Diarrhea in the Adult Zebrafish Model
Published on: July 12, 2018
Zebrafish as a model for Vibrio parahaemolyticus virulence
Rohinee N Paranjpye1, Mark S Myers1, Evan C Yount1
1Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 2725 Montlake Boulevard E, Seattle, WA 98112, USA.
Microbiology (Reading, England)
|September 24, 2013
Summary
A new adult zebrafish model effectively differentiates Vibrio parahaemolyticus virulence, revealing factors beyond known toxins. This approach aids in understanding bacterial pathogenicity and developing targeted interventions.
Area of Science:
- Microbiology
- Infectious Diseases
- Zebrafish Models
Background:
- Vibrio parahaemolyticus is a marine bacterium causing human gastroenteritis and wound infections.
- Current models often focus on known virulence factors like TDH, TRH, and T3SS, but virulence is likely multifactorial.
- Identifying additional virulence factors is crucial for a comprehensive understanding of V. parahaemolyticus pathogenicity.
Purpose of the Study:
- To investigate an adult zebrafish model for assessing the overall virulence of V. parahaemolyticus strains.
- To determine if the zebrafish model can differentiate virulence potential irrespective of strain origin or known virulence factors.
- To evaluate the model's effectiveness in comparing virulence between wild-type and mutant V. parahaemolyticus strains.
Main Methods:
- Adult zebrafish were challenged intraperitoneally with V. parahaemolyticus strains.
- Survival time was used as the primary metric to assess virulence.
- Virulence differences were compared between wild-type and isogenic mutants (ΔpilA, ΔmshA, ΔpilA:ΔmshA, ΔgbpA).
Main Results:
- The adult zebrafish model successfully detected differences in V. parahaemolyticus strain virulence based on survival time.
- Observed virulence differences were independent of the strain's isolation source (environmental or clinical).
- The model identified virulence variations regardless of the presence or absence of known factors TDH and TRH, and differentiated mutant strains.
Conclusions:
- The adult zebrafish model is a viable tool for evaluating V. parahaemolyticus virulence.
- This model highlights the contribution of unknown virulence factors in V. parahaemolyticus pathogenicity.
- The findings suggest that factors beyond TDH, TRH, and T3SS play significant roles in V. parahaemolyticus infections.
