Toxic effects of 5-Fluorouracil on sperm count in wistar rats

Area of Science:

• Reproductive toxicology
• Pharmacology
• Cancer therapy

Background:

• 5-fluorouracil (5-FU) is a common antimetabolite chemotherapy agent.
• While 5-FU's testicular toxicity is known, its specific impact on spermatogenesis remains understudied.
• Understanding 5-FU's effects on sperm production is crucial for managing cancer patient fertility.

Purpose of the Study:

• To investigate the impact of 5-fluorouracil on epididymal sperm count in a rat model.
• To determine if 5-FU affects spermatogenesis in a dose- and time-dependent manner.

Main Methods:

• Male Wistar rats received daily intraperitoneal injections of 5-FU (10, 20, or 30 mg/kg) or distilled water for five consecutive days.
• Epididymal sperm counts were assessed at 14, 35, 42, and 70 days post-injection.
• Sperm samples were collected, stained with eosin Y, and quantified using standard procedures.
• Statistical analysis was performed using the Mann Whitney U test.

Main Results:

• 5-fluorouracil administration led to a significant reduction in epididymal sperm count.
• The decrease in sperm count was observed to be both dose-dependent and time-dependent.
• Higher doses and longer durations post-injection correlated with lower sperm counts.

Conclusions:

• 5-fluorouracil adversely affects spermatogenesis, leading to reduced sperm counts.
• The findings highlight a significant risk of impaired male fertility associated with 5-FU treatment.
• Further research into protective strategies against 5-FU-induced reproductive toxicity is warranted.