Sodium Hydrosulfide Exerts a Transitional Attenuating Effect on Spermatozoa Migration in Vitro

Area of Science:

• Reproductive Biology
• Biochemistry
• Toxicology

Background:

• Hydrogen sulfide (H2S) plays a crucial role in regulating the reproductive system and maintaining fertility.
• Understanding the specific mechanisms of H2S action is vital for reproductive health research.

Purpose of the Study:

• To investigate the in vitro effect of sodium hydrosulfide (NaHS), an H2S donor, on mouse sperm migration.
• To determine the dose-dependent impact of NaHS on sperm motility and chemotaxis.

Main Methods:

• Spermatozoa from BALB/c mice were introduced into a specialized chamber containing varying concentrations of NaHS (2.5, 5, 10 mmol/l) or a control solution.
• Sperm migration to the wells was quantified at 1, 2, and 4 hours post-incubation using Bürker's counting chambers.
• Statistical analysis was performed to compare sperm migration percentages across different NaHS concentrations and time points.

Main Results:

• No significant differences in sperm migration were observed at 1 and 4 hours across all tested concentrations.
• A significant attenuating effect on sperm migration was noted after 2 hours of incubation with 5 mmol/l and 10 mmol/l NaHS solutions compared to the control.
• The low concentration (2.5 mmol/l) of NaHS did not show a significant effect on sperm migration at the 2-hour time point.

Conclusions:

• Sodium hydrosulfide (NaHS) exhibits a transient inhibitory effect on mouse sperm migration in vitro.
• The observed effect is concentration-dependent, with higher NaHS levels causing more significant attenuation of sperm movement.
• These findings contribute to understanding H2S modulation of reproductive functions at the cellular level.