Abstract
The reproductive effects of choline (trimethyl-β-hydroxyethylammonium) are unknown. Excess dietary intake of choline may occur in humans. Adult male rats were administered i.p. aqueous choline chloride (25 mg/rat, daily for 12 or 24 days). Administration of excess choline for 12 days did not significantly alter spermatogenesis. Administration for 24 days depleted pachytene spermatocytes until posttreatment day 5, while slight proliferation of spermatogonia was noted from day 5 onwards. By day 12, the tubules showed almost normal cellular associations. It is suggested that perhaps a prolonged administration of excess choline may prove to be toxic to male reproduction.
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