Relaxin in the male

Area of Science:

• Reproductive biology
• Endocrinology
• Urology

Background:

• Relaxin, a peptide hormone, is traditionally recognized for its role in pregnancy and childbirth.
• Recent findings indicate the presence of relaxin in the seminal plasma across various mammalian species.
• The prostate gland is identified as a potential primary source of relaxin in males.

Purpose of the Study:

• To investigate the functional role of relaxin in male reproductive physiology.
• To determine the potential of relaxin as a therapeutic agent for male infertility.

Main Methods:

• Analysis of relaxin presence in seminal plasma.
• Assessment of relaxin's effects on sperm motility in suboptimal samples.
• Evaluation of relaxin's impact on sperm-oocyte penetration.

Main Results:

• Relaxin was detected in the semen plasma of multiple species.
• Relaxin demonstrated a significant stimulatory effect on sperm motility in samples with suboptimal parameters.
• Increased sperm penetration into oocytes was observed in the presence of relaxin.

Conclusions:

• The prostate gland is a likely source of seminal relaxin.
• Relaxin enhances key aspects of sperm function, including motility and penetration capacity.
• Seminal relaxin presents a promising therapeutic avenue for addressing male infertility.