title: [Influence of bear bile on rat hepatocarcinoma induced by diethylnitrosamine].
abstract: To investigate the influence of bear bile on rat hepatocarcinoma induced by diethylnitrosamine (DEN), a total of 40 rats were randomly divided into 4 groups: normal control group, model group, and two bear bile treatment groups. The rat liver cancer model was induced by breeding with water containing 100 mg x L(-1) DEN for 14 weeks. The rats of the bear bile groups received bear bile powder (200 or 400 mg x kg(-1)) orally 5 times per week for 18 weeks. The general condition and the body weight of rats were examined every day. After 18 weeks the activities of serum alanine transaminase (ALT), aspartate transaminase (AST) and total bilirubin (TBIL) were detected. Meanwhile, the pathological changes of liver tissues were observed after H&E staining. The expression of proliferative cell nuclear antigen (PCNA) and a-smooth muscle actin (alpha-SMA) in liver tissue were detected by immunohistochemical method. After 4 weeks the body weights of rats in normal group were significantly more than that in other groups (P < 0.05); and that in the two bile groups was significantly more than that in the model group. Compared with normal group, the level of serum glutamic-pyruvic transaminase and total bilirubin increased significantly in other groups; compared with model group, these two indexes decreased significantly in two bile groups. Hepatocellular carcinoma occurred in all rats except for normal group; there were classic cirrhosis and cancer in model group while there were mild cirrhosis and high differentiation in two bile groups. There were almost no expressions of PCNA and alpha-SMA in normal group while there were high expressions in model group; the two bile groups had some expressions but were inferior to the model group, and alpha-SMA reduced markedly. It indicated that bear bile restrained the development of liver cancer during DEN inducing rat hepatocarcinoma, which may be related to its depressing hepatic stellate cell activation and relieving hepatic lesion and cirrhosis.
authors: Department of Hepatobiliary Surgery, Zhongshan Hospital, Xiamen University, Xiamen 361004, China.
authors: Jian-Yin
authors: JY
authors: Zhou
authors: Zhen-Yu
authors: ZY
authors: Yin
authors: Sheng-Yu
authors: SY
authors: Wang
authors: Jiang-Hua
authors: JH
authors: Yan
authors: Yi-Lin
authors: YL
authors: Zhao
authors: Duan
authors: D
authors: Wu
authors: Zheng-Jin
authors: ZJ
authors: Liu
authors: Sheng
authors: S
authors: Zhang
authors: Xiao-Min
authors: XM
authors: Wang
mesh_terms: D000199:Actins / Q000378:metabolism; D000410:Alanine Transaminase / Q000097:blood; D000818:Animals; D000970:Antineoplastic Agents / Q000494:pharmacology*; D001219:Aspartate Aminotransferases / Q000097:blood; D001646:Bile / Q000737:chemistry*; D001663:Bilirubin / Q000097:blood; D001835:Body Weight / Q000187:drug effects; D006528:Carcinoma, Hepatocellular / Q000097:blood / Q000139:chemically induced / Q000473:pathology*; D004052:Diethylnitrosamine; D008099:Liver / Q000378:metabolism / Q000473:pathology; D008103:Liver Cirrhosis / Q000139:chemically induced / Q000473:pathology; D008114:Liver Neoplasms, Experimental / Q000097:blood / Q000139:chemically induced / Q000473:pathology*; D008297:Male; D011208:Powders / Q000494:pharmacology; D018809:Proliferating Cell Nuclear Antigen / Q000378:metabolism; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley; D001503:Ursidae
chemical_list: D000199:Actins; D000410:Alanine Transaminase; D000970:Antineoplastic Agents; D001219:Aspartate Aminotransferases; D001663:Bilirubin; D004052:Diethylnitrosamine; D011208:Powders; D018809:Proliferating Cell Nuclear Antigen; C498862:Acta2 protein, rat