Welcome to Chinese Journal of Clinical Pharmacology and Therapeutics,Today is Chinese

Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2005, Vol. 10 ›› Issue (7): 721-725.

    Next Articles

Impact of CYP3A4 and P-glycoprotein on drug disposition in intestine

XIN Hua-wen   

  1. Department of Clinical Pharmacology, Wuhan General Hospital, Wuhan 430070, Hubei, China
  • Received:2005-05-08 Revised:2005-06-20 Online:2005-07-26 Published:2020-11-10

Abstract: Intestinal CYP3A4-mediated biotransformation and active efflux of absorbed drug by P-glycoprotein are major determinants of bioavailability of orally administered drugs. The expression of CYP3A4 and P-glycoprotein in the intestine is not co-ordinately regulated. However, synergistic actions of CYP3A4 and P-glycoprotein in intestinal drug disposition have been confirmed by in vitro and animal studies. Further understanding of this interaction would be potentially useful to improve oral bioavailability of CYP3A4 /-glycoprotein substrates.

Key words: CYP3A4, P-glycoprotein, drug metabolism, intestine, liver, first-pass metabolism, bioavailability, drug interaction

CLC Number: