胆畅心宽茶对小鼠胆囊胆固醇结石形成影响的实验研究

2021-03-18 03:31:54沈惟一刘兆娜姚依影胡海王毅兴
上海医药 2021年3期
关键词:中药

沈惟一 刘兆娜 姚依影 胡海 王毅兴

摘 要 目的:探究胆畅心宽茶对小鼠胆囊胆固醇结石形成影响及潜在机制。方法:给予小鼠普通饲料+/-胆畅心宽茶以及成石饲料+/-胆畅心宽茶,每组9只。喂养4周后处死采集血清、胆囊胆汁、肝脏等标本做检测。结果:单纯成石饲料组小鼠,胆囊内均出现肉眼结石以及镜下胆固醇结晶100%,而成石饲料加茶组肉眼结石只有44%,镜下胆固醇结晶78%。在普通饲料及成石饲料、饮茶小鼠胆汁中β-鼠胆酸比例均显著增高。成石饲料加茶组,肝脏胆汁酸代谢相关基因Cyp8b1表达下降,Cyp2c70表达上升。结论:胆畅心宽茶能预防胆囊胆固醇结晶/结石形成,可能与促进β-鼠胆酸合成,提高胆汁中胆汁酸亲水性有关。

关键词 胆石病 胆固醇 中药

中图分类号:R286; R285.5 文献标志码:A 文章编号:1006-1533(2021)03-0063-05

*基金项目:国家自然科学基金青年科学基金项目“茵陈蒿汤阻断毒性胆汁酸对SCF/c-kit通路的影响治疗胆石症的研究”(81603560);浦东新区卫健委临床中医高峰学科建设项目(PDZY-2018-0603)

Experimental study on the effect of Danchangxinkuan tea on cholesterol gallstone formation in mice*

SHEN Weiyi1, LIU Zhaona1, YAO Yiying1, HU Hai1**, WANG Yixing2***(1. Center of Gallbladder Disease; 2. Department of Traditional Chinese Medicine, Shanghai East Hospital affiliated to Tongji University, Shanghai 201200, China)

ABSTRACT Objective: To explore the potential mechanism and the effect of Danchangxinkuan tea on the formation of cholesterol gallstones in mice. Methods: Nine mice in each group were given chow diet +/- tea or lithogenic diet +/- tea. After 4 weeks of feeding, mice were sacrificed to collect serum, gallbladder bile, liver and other specimens for testing. Results: Gross stones and cholesterol crystals found in the gallbladder of all mice accounted for 100% in the lithogenic diet group when observed by naked eyes or under the microscope, only 44% (by naked eyes) and 78% (under the microscope) in the lithogenic diet plus tea group. The ratio of β-murocholic acid in the bile of tea-drinking mice was significantly increased in both diets. The expression of liver bile acid metabolism-related gene Cyp8b1 decreased while the expression of Cyp2c70 increased in lithogenic diet plus tea group. Conclusion: Danchangxinkuan tea can prevent gallbladder cholesterol crystals/stone formation, which may be related to the promotion of β-murocholic acid synthesis and the improvement of hydrophilicity of cholic acid in bile.

KEY WORDS gallstone; cholesterol; traditional Chinese medicine

膽囊胆固醇结石病(简称:胆石病)是临床常见疾病,约90%为胆固醇结石[1]。目前研究认为其发生有关的病理生理异常包括:①肝脏向胆汁中分泌过多胆固醇;②胆汁中胆汁酸和磷脂相对不足;或两者兼有,导致胆汁中胆固醇的溶解平衡被破坏,胆固醇结晶容易形成进而发展成胆固醇结石[2]。

茶、麦芽等日常食品也被证明具有降血脂降胆固醇的作用,可能对胆石病具有一定的防治作用[3],近期一项基于台湾地区人口的调查显示,适量的饮茶有助于降低胆囊结石的发病率[4],进一步证实了日常饮食一定程度上可预防胆囊结石的形成。……

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