[L-arginine and male infertility]

Area of Science:

• Reproductive Medicine
• Urology
• Biochemistry

Background:

• Male infertility affects a significant portion of couples seeking reproductive assistance.
• Decreased sperm motility, a common factor in infertility, is not always linked to infection or immunological issues.
• L-arginine is an amino acid crucial for nitric oxide synthesis, which plays a role in vascular function and potentially sperm motility.

Purpose of the Study:

• To evaluate the clinical efficacy and patient acceptance of L-arginine hydrochloride (HCL) in treating infertile men with decreased sperm motility.
• To determine if L-arginine HCL supplementation can improve sperm motility in men with normal sperm counts but reduced motility not caused by infection or immunological factors.

Main Methods:

• A clinical trial involving 40 infertile men with normal sperm counts but decreased motility.
• Participants received a daily oral dosage of 80 ml of 10% L-arginine HCL for a duration of 6 months.
• Assessment of sperm motility and evaluation of treatment side-effects were conducted.

Main Results:

• L-arginine HCL treatment led to a significant improvement in sperm motility.
• The supplementation was well-accepted by the participants, with no reported side-effects.
• The positive effects on motility were observed in men whose infertility was not attributed to infection or immunological disorders.

Conclusions:

• Oral L-arginine HCL is a clinically effective and safe treatment for improving sperm motility in select infertile men.
• This intervention offers a promising, non-invasive therapeutic option for male infertility characterized by reduced sperm motility.
• Further research may explore the long-term effects and optimal dosage of L-arginine HCL in male reproductive health.