RÉSUMÉ
<p><b>OBJECTIVE</b>To detect the hepatic tissue and serum level of TGFbeta1 in patients with viral hepatitis, in order to clarify their relationship of the starting, developing of hepatic fibrosis.</p><p><b>METHODS</b>This study included 92 patients with viral hepatitis. Liver puncture was performed in 31 patients. Hepatic collagen staining (Masson's three colors) and TGFbeta1 immunohistochemistry staining of the liver tissue specimens were performed, morphometric quantitative measurements of hepatic histological collagen and TGFbeta1 were made. The serum level of TGFFbeta1 was detected by ELISA.</p><p><b>RESULTS</b>The surface density of hepatic TGFbeta1 increased linearly with the elevation of fibrosis stage (P < 0.05), there were no significant differences between every two groups of G1, G2, G3 and G4 (P > 0.005). There was a closely positive correlation between the levels of TGFbeta1 in hepatic tissue and serum, the coefficient was 0.896 (P < 0.01). The levels of TGFbeta1 in tissue and serum both had positive correlation with hepatic collagen, coefficients were 0.863 and 0.667 (P < 0.001). The level of TGFbeta1 in tissue and serum both had positive correlation with serum levels of PCIII, HA, LN, CIV (P < 0.001).</p><p><b>CONCLUSIONS</b>There was a closely relationship between the levels of TGFbeta1 in hepatic tissue and serum and liver fibrosis. The detection of TGFbeta1 in liver and serum are more sensitive than HA, LN, CIV in early period of hepatic fibrosis.</p>