斑马鱼平台研究七种中药单体的降脂作用

Lipid-lowering effect of seven traditional Chinese medicine monomers in zebrafish system

本研究利用斑马鱼平台研究七种中药单体的降脂作用。通过高脂饮食构建斑马鱼高脂血症模型,使用油红O染色研究七种中药单体对斑马鱼血脂的影响,通过检测斑马鱼血清总胆固醇、甘油三酯验证药物的降脂作用,并初步探讨药物降脂可能的机制。结果显示,高脂饮食后斑马鱼幼鱼血脂升高,经七种中药单体处理后,油红O染色显示大黄酚能降低斑马鱼幼鱼血脂。高脂饮食的成年斑马鱼经大黄酚药浴8周后血清总胆固醇、甘油三酯水平均下降。大黄酚增加斑马鱼肠蠕动的频率,加速肠道排空。上述结果表明大黄酚可降低高脂饮食后斑马鱼的血脂水平,其机制可能是大黄酚加快了高脂食物从肠道排出,减少了肠道对脂质的吸收。

The present study aimed to study lipid-lowering effect of seven traditional Chinese medicine monomers in zebrafish sys- tem. Zebrafish were fed with high fat diet to establish a hyperlipemia model, then fasted and bathed with seven traditional Chinese medicine monomers stigmasterol, triacontanol, chrysophanol, vanillic acid, shikimic acid, polydatin and oleanolic acid respectively. The oil red 0 staining was used to detect the blood lipids of zebrafish. Serum total cholesterol and triglyceride levels were detected to validate the lipid-lowering effect. The result showed that a zebrafish model of hyperlipemia could be established by feeding larvae zebra_fish with high fat diet. Among the seven traditional Chinese medicine monomers, chrysophanol had lipid-lowering effect. Chrys- ophanol significantly reduced serum total cholesterol and triglyceride levels in adult zebrafish fed with high fat diet. Chrysophanol accelerated peristalsis frequency of zebrafish intestine and the excretion of high fat food. It is concluded that chrysophanol has lipid- lowering effect in zebrafish, and the mechanism of the effect may be due to the roles of chrysophanol in reducing lipid absorption from gastrointestinal tract and accelerating the excretion of food.