Unknown

Dataset Information

0

St. John's wort induces hepatic drug metabolism through activation of the pregnane X receptor.


ABSTRACT: St. John's wort (Hypericum perforatum) is an herbal remedy used widely for the treatment of depression. Recent clinical studies demonstrate that hypericum extracts increase the metabolism of various drugs, including combined oral contraceptives, cyclosporin, and indinavir. In this report, we show that hyperforin, a constituent of St. John's wort with antidepressant activity, is a potent ligand (K(i) = 27 nM) for the pregnane X receptor, an orphan nuclear receptor that regulates expression of the cytochrome P450 (CYP) 3A4 monooxygenase. Treatment of primary human hepatocytes with hypericum extracts or hyperforin results in a marked induction of CYP3A4 expression. Because CYP3A4 is involved in the oxidative metabolism of >50% of all drugs, our findings provide a molecular mechanism for the interaction of St. John's wort with drugs and suggest that hypericum extracts are likely to interact with many more drugs than previously had been realized.

SUBMITTER: Moore LB 

PROVIDER: S-EPMC16574 | biostudies-literature | 2000 Jun

REPOSITORIES: biostudies-literature

altmetric image

Publications

St. John's wort induces hepatic drug metabolism through activation of the pregnane X receptor.

Moore L B LB   Goodwin B B   Jones S A SA   Wisely G B GB   Serabjit-Singh C J CJ   Willson T M TM   Collins J L JL   Kliewer S A SA  

Proceedings of the National Academy of Sciences of the United States of America 20000601 13


St. John's wort (Hypericum perforatum) is an herbal remedy used widely for the treatment of depression. Recent clinical studies demonstrate that hypericum extracts increase the metabolism of various drugs, including combined oral contraceptives, cyclosporin, and indinavir. In this report, we show that hyperforin, a constituent of St. John's wort with antidepressant activity, is a potent ligand (K(i) = 27 nM) for the pregnane X receptor, an orphan nuclear receptor that regulates expression of the  ...[more]

Similar Datasets

| S-EPMC7056460 | biostudies-literature
| S-EPMC7032678 | biostudies-literature
| S-EPMC4584416 | biostudies-literature
| S-EPMC8171068 | biostudies-literature
| S-EPMC4116257 | biostudies-literature
| S-EPMC6999061 | biostudies-literature
| S-EPMC2483264 | biostudies-literature
| S-EPMC6264782 | biostudies-literature
| S-EPMC8409492 | biostudies-literature
| S-EPMC6357942 | biostudies-literature