实验性肝纤维化形成及逆转过程中膜性基质金属蛋白酶1mRNA表达的动态研究

THE STUDY OF MEMBRANE TYPE 1 MATRIX METALLOPROTEINASE (MT 1 MMP) EXPRESSION IN THE PROCESSES OF EXPERIMENTAL LIVER FIBROSIS AND ITS REVERSAL

应用原位杂交观察基质金属蛋白酶 (MT1 MMP)mRNA在肝纤维化形成及逆转过程中的动态表达。采用CCl4 皮下注射Wistar大鼠建立肝纤维化模型 ,并让其自然恢复以使纤维化逆转。结果显示 ,MT1 MMPmRNA主要表达在间质细胞 (肝星状细胞等 ) ,部分肝细胞也有表达 ;随着肝纤维化的进展 ,MT1 MMPmRNA表达逐渐增强 ;而在肝纤维化的逆转过程中 ,MT1 MMPmRNA表达逐渐减弱。提示MT1

To investigate MT 1 MMP mRNA expression in the development of liver fibrosis and during the reversal of liver fibrosis ,we undertook a dynamic observation by situ hybridization. Liver fibrosis model was established by intraperitoneal injection with CCl 4 in Wistar rats, then allowed them fo recover spontaneously to observe the reversal of liver fibrosis .The results showed that MT 1 MMP mRNA was expressed mainly in mesenchymal cells(such as hepatic stellate cell), also in a part of hepatocytes.The levels of MT 1 MMP mRNA expression were increased gradually in the development of liver fibrosis and decreased gradually during reversal of liver fibrosis. These results suggest that the expression of MT 1 MMP may have an important role in the development of liver fibrosis and its reversal.