病毒性肝炎肝细胞凋亡及与肝纤维化的关系

目的 研究病毒性肝炎肝细胞凋亡及与肝纤维化的关系。方法 以原位末端标记及免疫组化检测４０例慢性病毒性肝炎（ＣＨ）肝组织细胞调亡相关线状断裂ＤＮＡ以及Ｆａｓ抗原、转化生长因子β１（ＴＧＦ－β１）、Ⅲ型前胶原肽（ＰⅢＰ）在肝组织中的表达；以酶联免疫吸附测定（ＥＬＩＳＡ）检测血清可溶性Ｆａｓ（ｓＦａｓ）及ＴＧＦ－β１。结果 ＣＨ肝细胞ＤＮＡ损伤与肝组织Ｆａｓ抗原、ＴＧＦ－β１表达及血清ｓＦａｓ、ＴＧＦ－

Study onrelationship between the apoptosis of hepatocytes and liver fibrosis of chronic viralhepatitis

OBJECTIVE: To study the relationship between apoptosis of hepatocytes and liver fibrosis of chronic viral hepatitis (CH). METHODS: DNA fragmentation, one of the characteristic features of apoptosis, was detected by in situ terminal deoxynucleotidyl transferase mediated dUTP nick end labeling (TUNEL) and the expression of Fas, transforming growth factor beta 1 (TGF-beta 1) and Pre-collagen III peptide (P III P) in liver tissues were detected by immunohistochemistry. Soluble Fas (sFas) and TGF-beta 1 in serum were detected by ELISA. RESULTS: The damage of DNA in hepatocytes of CH correlated closely with the expression of Fas and TGF-beta 1 in liver tissue and serum (r = 0.6129, 0.5368, 0.5564, 0.5996; P <0.05-0.01). In severe type CH and liver cirrhosis, the degree of liver fibrosis and the expression of P III P and TGF-beta 1 were higher than that in mild type and moderate type CH. CONCLUSIONS: The sFas in serum may be one of the factors associated with the apoptosis. The apoptosis of hepatocytes correlated with liver fibrosis of CH and TGF-V beta 1 may play an important role between apoptosis and liver fibrosis.