Abstract
α-Hexachlorocyclohexane was administered as a single oral dose (100 mg/kg body wt) to both intact and adrenalectomized male Sprague-Dawley rats. In the intact rats there was a peak in [ 3H]thymidine incorporation into DNA at 30 hr and an increase in relative liver weight (liver weight/body wt × 100) which peaked at 60 hr post α-HCH dose. However, in α-HCH-dosed adrenalectomized rats [ 3H]thymidine incorporation into DNA remained elevated throughout the study period and relative liver weight was not significantly increased. In corticosterone-supplemented α-HCH-dosed Adx rats, [ 3H]thymidine incorporation into DNA was significantly reduced and RLW was increased comparable to that seen in intact animals. These results suggest that α-HCH-induced liver growth is mediated by corticosterone.
Published Version
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