Hexachlorocyclohexane-induced testicular dysfunction in rats.

Area of Science:

• Toxicology
• Reproductive Biology
• Endocrinology

Background:

• Hexachlorocyclohexane (HCH) is a persistent organochlorine pesticide with known toxic effects.
• Previous studies suggest potential adverse impacts of HCH on male reproductive health.
• Understanding the specific mechanisms of HCH toxicity on testicular function is crucial.

Purpose of the Study:

• To investigate the effects of technical HCH exposure on testicular morphology and function in weanling male rats.
• To evaluate the impact of HCH on lipid metabolism and steroidogenic enzyme activities within the testis.

Main Methods:

• Weanling male albino rats were administered technical HCH at doses of 100, 750, and 1500 parts per million (p.p.m.) for 90 days.
• Histopathological examination of testicular tissues was performed.
• Histochemical staining for lipids and biochemical assays for enzyme activities (delta 5 3 beta HSDH, 17 beta HSDH, G-6-PDH) were conducted.

Main Results:

• Significant testicular atrophy, reduced tubule size, and spermatogenetic arrest were observed at the highest HCH dose (1500 p.p.m.).
• Accumulation of cholesterol-positive lipids was noted in Sertoli and Leydig cells of atrophied testes.
• Biochemical analysis revealed increased total lipid and cholesterol content, alongside markedly decreased activities of key steroidogenic enzymes in interstitial cells.

Conclusions:

• Technical HCH exposure induces testicular atrophy and disrupts spermatogenesis in male rats.
• HCH exposure inhibits steroidogenesis in Leydig cells, evidenced by lipid accumulation and reduced enzyme activities.
• These findings highlight the potential reproductive toxicity of HCH and its adverse effects on male endocrine function.