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荭草提取物对大鼠CYP450酶的抑制作用评价

2021-06-17吕婷潘洁陆苑孙佳刘春花李勇军王永林

安徽农业科学 2021年2期

吕婷 潘洁 陆苑 孙佳 刘春花 李勇军 王永林

摘要 [目的]考察荭草提取物对大鼠肝微粒体CYP450中6种亚型酶的体外抑制作用,从而预测发生药物相互作用的可能性,为临床合理用药提供科学依据。[方法]在肝微粒体孵育体系中,将荭草提取物分别与混合探针底物(非那西丁/CYP1A2、氯唑沙宗/CYP2E1、右美沙芬/CYP2D4、奥美拉唑/CYP2C19、甲苯磺丁脲/CYP2C11、睾酮/CYP3A2)共同孵育,UPLC-MS/MS 检测各探针底物的代谢物生成量,采用GraphPad v5.0 软件计算半数抑制浓度(IC50)。[结果]荭草提取物对大鼠肝微粒体中 CYP1A2、CYP2E1、CYP2D4、CYP2C19、CYP2C11 和CYP3A2的IC50值在85.75~345.00 μg/mL。[结论]在临床剂量下,荭草提取物对大鼠肝微粒体CYP2C19、CYP2D4有弱抑制作用,对CYP1A2有强抑制作用。

关键词 荭草提取物;细胞色素P450酶;抑制作用;药物相互作用

中图分类号 R285.5文献标识码 A文章编号 0517-6611(2021)02-0162-03

doi:10.3969/j.issn.0517-6611.2021.02.044

开放科学(资源服务)标识码(OSID):

Evaluation of the Inhibitory Effect of Polygonum orientale L. Extract on CYP450 Enzymes in Rats

L Ting1,2, PAN Jie1, LU Yuan1 et al

(1.State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, Guizhou 550004;2. School of Pharmacy,Guizhou Medical University, Guiyang, Guizhou 550004)

Abstract [Objective]To investigate in vitro inhibition effect of Polygonum orientale extract on six subtypes of enzyme in rat liver microsomal CYP450, to predict the possibility of drug interactions, and provide scientific basis for clinical rational drug use. [Method]In the liver microsome incubation system, the Polygonum orientale extract was mixed with the probe substrates (phenacetin/CYP1A2, chlorzoxazone/CYP2E1, dextromethorphan/CYP2D4, omeprazole/CYP2C19, tolbutamide/CYP2C11, testosterone/CYP3A2) were incubated together.The quantitation of metabolites of substrates was achieved by UPLCMS/MS,the IC50 values were calculated by GraphPad v5. 0 software.[Result]The IC50 values of Polygonum orientale extract on CYP1A2,CYP2E1,CYP2D4,CYP2C19,CYP2C11 and CYP3A2 of rat liver microsomes were in the range of 85.75-345.00 μg/mL. [Conclusion] In clinical doses, Polygonum orientale extract have weak inhibitory effect on rat liver microsomal CYP 2C19 and CYP 2D4, have strong inhibition on CYP1A2.

Key words Polygonum orientale L. extract;Cytochrome P450 enzymes;Inhibition;Drug interaction

葒草为蓼科植物荭草(Polygonum orientale L.)的干燥果穗及带叶茎枝,在贵州省分布广泛,在该省民间常用于胸痛、胸闷、气短、中风偏瘫(嘴角歪斜)等疾病的治疗[1],具有潜在的药用开发价值。许多学者对荭草药材的药用部位筛选[2]、化学成分[3-5]、指纹图谱[6]、质量标准[7]、提取工艺[8]等关键技术进行了研究。目前已研制开发了2个中药新药:注射液复方荭草冻干粉针[9]、荭叶心通软胶囊[10],用于治疗冠心病与心绞痛。

该试验采用Cocktail探针药物法,选择较为典型的6种探针药物(非那西丁、奥美拉唑、甲苯磺丁脲、右美沙芬、氯唑沙宗、睾酮分别作为CYP1A2、CYP2C11、CYP2C19、CYP2D4、CYP2E1、CYP3A2)所对应的特异性底物[11-12],测定荭草提取物对大鼠肝微粒体中CP450酶活性的影响,预测与其他药物联合应用是否存在潜在的代谢性药物相互作用,为荭草临床合理用药提供科学依据。……

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