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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2014, Vol. 19 ›› Issue (2): 166-170.

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Studies on absorption kinetics of gambogenic acid in rat's intestines

CHEN Jin-pei1, WANG Shan-shan1, WANG Dian-lei1,2, YANG Li-li1, WANG Chen-yin1, TAO Xiu-hua1,3, CAO Yin1,4, WANG Shu-jun1, CHEN Ya-jun1   

  1. 1College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230031, Anhui,China;
    2Laboratory of Drug Metabolism and Pharmacokinetics, Anhui University of Chinese Medicine, Hefei 230031, Anhui,China;
    3Pharmacology Dept, Anhui Sino-Implant Co., Ltd, Hefei 230088, Anhui, China;
    4Pharmacy Department, Psychiatric Hospital of Hefei, Hefei 230022,Anhui,China
  • Received:2013-07-22 Revised:2014-02-17 Online:2014-02-26 Published:2014-03-31

Abstract: AIM: To investigate the absorption kinetic characteristics of Gambogenic acid at different intestine segments in rats and provide reliable biopharmaceutics basis of novel drug delivery systems of Gambogenic acid.METHODS: The rat intestinal absorption model was established to investigate the influence of different concentrations (3.0,10.0,30 μg/mL) and intestine segments on the intestinal absorption of GNA. Gambogenic acid concentration was measured by the RP-HPLC.RESULTS: Within the range from 3.0-30.0 μg/mL, the absorption rate and the quality concentration of Gambogenic acid had a linear relation. The permeability coefficient of Gambogenic acid at colon, ileum, jejunum, duodenum were(0.03944±0.00158), (0.04012±0.00103), (0.04104±0.00124) ,(0.08620±0.00272) h-1,respectively.CONCLUSION: The absorption of Gambogenic acid conforms to passive diffusion mechanism and first-order kinetics. Gambogenic acid could be absorbed in whole intestinal segments, so it is feasible for Gambogenic acid to be designed as a controlled-release formulation.

Key words: Gambogenic acid, rat, intestinal absorption kinetics, HPLC

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