药物研究
XU Shali;LI Zhongming;LI Hani;XUE Cunkuan
ABSTRACTObjectiveTo explore the effects of valerian extracts on bile acid metabolism and liver damage caused by high cholesterol high sugar high fat diet. Methods①24 white rabbits with big ears were randomly divided into 3 groups(n=8 each). The rabbits were fed with high cholesterol high fat high sugar diet except those in the normal group with pellet feed. The treatment group was intragastrically given with valeriana extracts 30 mg8226;kg1 daily. The serum pyruvate aminotransferase(ALT), serum total cholesterol(TC), total bile acid(TBA) content, bile flow and TC phospholipids TBA content, gallstone formation, liver histological test and aortic plaquelike porridge were analyzed later. ②24 Wistar rats were randomly divided into 3 groups(n= 8), which were fed with high cholesterol high fat high sugar diet, except for those in the normal group with basal diet. The treatment group were fed with valerianaextracts 50 mg8226;kg1 daily, the control group was given with the equal volume of 0.9% sodium chloride solution. The serum TC, TBA and liver histology were observed. Results①Compared with the control group, common bile duct flow and solids content were increased significantly(P<0.01) in the treatment group, TBA concentration in bile was elevated obviously(P<0.05), serum TBA was predominantly lower(P<0.05), gallstone formation was significantly less(P<0.05), liver injury was significantly alleviated. ②The serum TBA in rats was dropped(P<0.05) in the treatment group compared with that in the control, and the liver injury was attenuated. ConclusionValeriana extracts could increase the TBA content of bile, improve TBA/TC stone formation, lower the serum TBA concentration and significantly reduce the liver injury.