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The secretory products of Trichomonas vaginalis decrease fertilizing capacity of mice sperm in vitro
Jaesook Roh, Young-Su Lim, Min-Young Seo
1Department of Environmental Biology and Medical Parasitology, College of Medicine, Hanyang University, Seoul, Korea.
Asian Journal of Andrology
|January 13, 2015
Summary
Extracellular polymeric substances (EPS) from Trichomonas vaginalis significantly impair sperm function and reduce fertilization rates in vitro. This study highlights a direct negative impact of T. vaginalis EPS on sperm fertilizing capacity.
Area of Science:
- Reproductive Biology
- Microbiology
- Infectious Diseases
Background:
- Trichomonas vaginalis infection is a common STI and a recognized cause of male infertility.
- Limited data exists on the effects of T. vaginalis extracellular polymeric substances (EPS) on sperm functional integrity.
Purpose of the Study:
- To investigate the impact of T. vaginalis EPS on sperm fertilizing capacity.
- To assess the effects of EPS on sperm motility, acrosomal status, and viability in vitro.
Main Methods:
- Sperm were incubated with varying concentrations and durations of T. vaginalis EPS in vitro.
- Sperm motility, viability, acrosomal status, and hypo-osmotic swelling were evaluated.
- In vitro fertilization (IVF) rates were assessed using mouse sperm.
Main Results:
- Incubation with EPS significantly reduced sperm motility and viability in a dose- and time-dependent manner.
- EPS exposure negatively affected sperm functional integrity.
- A significant decrease in in vitro fertilization rates was observed.
Conclusions:
- T. vaginalis EPS directly impairs sperm quality and reduces fertilizing capacity in vitro.
- Further research is needed to confirm these effects on human sperm.
