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The insecticide fipronil harms rat sperm production and causes oxidative stress in testes. However, vitamin E supplementation effectively reversed these toxic effects, protecting sperm and testicular health.

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Area of Science:

  • Toxicology
  • Reproductive Biology
  • Biochemistry

Background:

  • Fipronil is a widely used insecticide with potential toxic effects.
  • Oxidative stress is implicated in male reproductive dysfunction.
  • Vitamin E is a known antioxidant with potential protective properties.

Purpose of the Study:

  • To evaluate the toxic effects of fipronil on sperm production and testicular oxidative damage in male rats.
  • To investigate the protective role of vitamin E against fipronil-induced toxicity.

Main Methods:

  • Male rats were treated with fipronil (5 mg/kg) or fipronil (5 mg/kg) + vitamin E (100 mg/kg) for 14 days.
  • Epididymal sperm count and testicular oxidative stress markers (glutathione peroxidase, catalase, GSH, malondialdehyde) were assessed.

Main Results:

  • Fipronil significantly reduced epididymal sperm count.
  • Fipronil exposure altered testicular antioxidant enzyme activities and increased lipid peroxidation (malondialdehyde) while depleting glutathione (GSH).
  • Vitamin E administration restored sperm count and testicular oxidative stress parameters to control levels.

Conclusions:

  • Fipronil exerts toxicity on sperm production in rats, primarily through inducing oxidative stress.
  • Vitamin E demonstrates a significant protective effect, reversing the adverse impacts of fipronil on male reproductive parameters.