Original Article

Effects of schizandrin B and schisanhenol on drug metabolizing-phase II enzymes and estradiol metabolism

Hua LU, Geng-tao LIU


Intragastric gavage of schizandrin B (Sin B) and schisanhenol (Sal) 200 mg/kg once daily for 3 d significantly increased liver glutathione-S-transferase (GSH-S-T) and microsomal cytochrome P-450 in mice and rats. Sin B and Sal antagonized the increase of uterus weight induced by sc estradiol in ovariectomized, and decreased serum estradiol level in mice. RIA and HPLC showed an enhancement in [3H] estradiol metabolism by liver microsomes from Sin B- and Sal-treated mice. The results indicated that both Sin B and Sal have inductive actions on drug metabolizing-phase I and phase II enzymes in mice and rats.

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