XUE Chun-miao, ZHANG Bing, LI Lian-zhen, et al. Changes of drug metabolic enzyme CYP3A and transportprotein P-gp in vitro and in vivo in deficiency cold state[J]. Journal of Beijing University of traditional Chinese Medicine, 2014, 37(9): 602-605.
XUE Chun-miao, ZHANG Bing, LI Lian-zhen, et al. Changes of drug metabolic enzyme CYP3A and transportprotein P-gp in vitro and in vivo in deficiency cold state[J]. Journal of Beijing University of traditional Chinese Medicine, 2014, 37(9): 602-605.DOI:
Objective To discuss the changes of drug metabolic enzyme CYP3 A and transportprotein P-gp in deficiency cold state through in vitro and in vivo tests.Methods The rat model of deficiency cold was established by injection of hydrocortisone(20 mg / kg) for 14 d.The activity of CYP3 A and P-gp level in liver and small intestine were observed in normal and deficiency cold rats.L02 cells and Caco-2 cells were chosen as cell model and intervened with serum of normal and deficiency cold rats for observing the activity of CYP3 A in L02 cells and P-gp level in Caco-2 cells.Results The activity of CYP3 A decreased significantly in liver and small intestine(P < 0.05)
and P-gp level decreased significantly in small intestine(P < 0.05) in deficiency cold rats.The activity of CYP3 A decreased significantly in L02cells(P < 0.05)
but P-gp level had no changes in Caco-2 cells in deficiency cold rats.Conclusion The tests in vitro and in vivo have verified that the activity of CYP3 A is lower in deficiency cold state.Non-change of P-gp level in Caco-2 cells may be related to that Caco-2 cells are cancer cells and P-gp expression is high.