Curculigo orchioides (Xian Mao) modifies the activity and protein expression of CYP3A in normal and Kidney-Yang Deficiency model rats |
| |
Authors: | Chun-Mei Wang Song-Yao Xu Shuo Lai Di Geng Jian-Mei Huang Xiu-Ying Huo |
| |
Institution: | Department of Biological Pharmaceutics, School of Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China |
| |
Abstract: | Aim of the studyIn Chinese medicine clinics, traditional Chinese herbs are used to treat disorders of Yin and Yang balance, including Kidney-Yang Deficiency. The activity of the hepatic cytochrome P450 3 A (CYP3A) is closely associated with body status. The aim of the present study is to investigate CYP3A enzymatic activity and CYP3A4 protein expression using a Kidney-Yang Deficiency rat model and furthermore to investigate the intervention effects of the Pungent-hot herb Xian Mao. This work contributes rationale for personalized medicine and enhances our understanding of herb–drug interactions.Materials and methodsRats were randomly divided into three groups: the model group, the Xian Mao group and the intervention group (model rats treated with Xian Mao). The model rats were given an intramuscular injection of hydrocortisone for 14 days, and the control rats were given normal saline. The Xian Mao group consisted of normal rats treated with Xian Mao by oral gavage for 7 days. The intervention group was given Xian Mao for 7 days after treatment with hydrocortisone. The activity of CYP3A was detected by using the erythromycin-N-demethylase method. CYP3A4 protein expression level was detected by Western-blot.ResultsCYP3A enzymatic activity in the Kidney-Yang Deficiency rat was decreased by 44% compared to normal animals. The relative CYP3A4 protein expression level of the Kidney-Yang Deficiency rat (mean value 0.663±0.188) was 20% lower than that of normal rat (0.830±0.199). The in vitro data showed that CYP3A activity was significantly (P<0.001) inhibited (decreased by 59%) by Xian Mao concentrations of 1 mg/mL. The in vivo data also showed that CYP3A activity was significantly decreased in the rats treated with the three doses of Xian Mao. The CYP3A4 protein expression was significantly decreased by Xian Mao treatment at the high and intermediate doses (30 and 20 g/kg, respectively) compared with the normal group. However, the intervention group (the Kidney-Yang Deficiency rat treated with Xian Mao at 20 and 30 g/kg) showed an increased CYP3A activity and CYP3A4 protein expression compared with the herb-untreated model rats.ConclusionCYP3A enzymatic activity and CYP3A4 protein expression could be inhibited by Xian Mao. The CYP3A activity and CYP3A4 expression in the Kidney-Yang Deficiency model rat were lower than that of normal rat but this deficiency could be rescued by treatment with Xian Mao. |
| |
Keywords: | APS Ammoniumpersulfate CYP3A Cytochrome P450 3A ERND Erythromycin-N-demethylase IH Intervention high dose IM Intervention middle dose IL Intervention low dose M Model XH Xian Mao high dose XM Xian Mao middle dose XL Xian Mao low dose N Normal TCM Traditional Chinese Medicine |
本文献已被 ScienceDirect 等数据库收录! |