Résumé
Objective: To explore the effects of gentiana scabra bage on the expression of hepatic collagen proteins in Paragonimus skrjabini rats with liver fibrosis. Methods: Immunohistochemical technique was used to observe the changes of content of hepatic type I, III collagen proteins in Paragonimus skrjabini rats with liver fibrosis before and after the gentiana scabra bage treatmeat. Results: Comparing with the model group, changes of hepatic type I and type III collagen proteins in gentiana scabra bage treated group were significantly weakened. Conclusions: Gentiana scabra bage treatment can reduce the content of hepatic type III and type I collagen protein significantly in Paragonimus skrjabini rats with liver fibrosis, thereby, playing the role against hepatic fibrosis.
Résumé
OBJECTIVE@#To explore the effects of gentiana scabra bage on the expression of hepatic collagen proteins in Paragonimus skrjabini rats with liver fibrosis.@*METHODS@#Immunohistochemical technique was used to observe the changes of content of hepatic type I, III collagen proteins in Paragonimus skrjabini rats with liver fibrosis before and after the gentiana scabra bage treatmeat.@*RESULTS@#Comparing with the model group, changes of hepatic type I and type III collagen proteins in gentiana scabra bage treated group were significantly weakened.@*CONCLUSIONS@#Gentiana scabra bage treatment can reduce the content of hepatic type III and type I collagen protein significantly in Paragonimus skrjabini rats with liver fibrosis, thereby, playing the role against hepatic fibrosis.
Résumé
<p><b>OBJECTIVE</b>To investigate the role of reactive oxygen species (ROS) and the effect of vitamin E on proliferation of vascular smooth muscle cells (VSMCs) induced by homocysteine.</p><p><b>METHODS</b>DNA synthesis in the VSMCs cells was measured using [3H]-thymidine incorporation assay, and the cell number determined by trypan blue method. The level of ROS in the cells was determined using DCF-DA as the fluorescence probe.</p><p><b>RESULTS</b>Homocysteine promoted VSMC DNA synthesis, proliferation, and ROS production. Cysteine resulted in increased ROS production in VSMCs, but had no significant effect on DNA synthesis and cell proliferation. Catalase significantly inhibited ROS production induced by homocysteine, but did not significantly inhibited homocysteine-mediated proliferation of VSMCs. While alpha-tocopherol and beta-tocopherol both suppressed increased ROS production induced by homocysteine in VSMCs, only alpha-tocopherol significantly inhibited homocysteine-mediated VSMC proliferation.</p><p><b>CONCLUSION</b>ROS is not associated with VSMC proliferation, and vitamin E-induced suppression of VSMC proliferation is probably related to protein kinase C inhibition.</p>