Objective:To investigate the hepatoprotective effects of Levisticum officinale extract on CCl4-induced hepatotoxicity.Methods:Different doses of Levisticum officinale extract were given orally to rats for 10 days,then...Objective:To investigate the hepatoprotective effects of Levisticum officinale extract on CCl4-induced hepatotoxicity.Methods:Different doses of Levisticum officinale extract were given orally to rats for 10 days,then rats received a single dose of CCl4(2.5 mL/kg,50%v/v in liquid paraffin).Biochemical and histopathological assays were performed to assess the effects of the extract on liver function and architecture.Moreover,antioxidant and oxidative markers as well as inflammatory and fibrotic indicators were measured.Results:Pretreatment with Levisticum officinale extract significantly mitigated CCl4-induced damage to liver structure,improved serum levels of alanine aminotransferase,aspartate aminotransferase,alkaline phosphatase,urea,total bilirubin,and total protein,enhanced glutathione content and superoxide dismutase and catalase activities in the liver,as well as decreased plasma and hepatic malondialdehyde levels.Immunohistochemical results demonstrated that the extract reduced Ki-67 andα-SMA expression and Masson’s trichrome staining revealed decreased liver collagen in rats treated with Levisticum officinale extract.Moreover,Levisticum officinale extract markedly decreased the gene expressions of TNF-α,IL-6,TGF-β1,MCP-1,and COX-2.Conclusions:Levisticum officinale extract exerts hepatoprotective effects on CCl4-induced hepatotoxicity through antioxidant,anti-inflammatory,and anti-fibrotic activities.展开更多
目的:研究黄酮类化合物木犀草素(luteolin,Lu)治疗肝纤维化的作用。方法:30只Wistar大鼠随机分成正常对照组,实验对照组和Lu实验组,实验对照组和Lu实验组给予8wk CCl_4和酒精饮料制备肝纤维化动物模型,Lu实验组从实验开始就用20mg.Kg^(-...目的:研究黄酮类化合物木犀草素(luteolin,Lu)治疗肝纤维化的作用。方法:30只Wistar大鼠随机分成正常对照组,实验对照组和Lu实验组,实验对照组和Lu实验组给予8wk CCl_4和酒精饮料制备肝纤维化动物模型,Lu实验组从实验开始就用20mg.Kg^(-1).day^(-1)LU灌胃。实验结束后,进行病理学检测和测定肝组织羟脯氨酸含量,用Northern Blot检测Ⅰ型前胶原mRNA表达,并测定了肝组织MDA含量和基质金属蛋白酶(MMPs)的活性。结果:经Lu治疗后,肝脏纤维化程度降低,羟脯氨酸含量减少;同时观察到Lu使肝脏Ⅰ型前胶原mRNA表达降低(5.2±1.4 vs 3.8±1.1,P<0.05)和MDA含量显著减少(12.7±2.6 vs 8.2±2.0μmmol/g,P<0.05),但MMPs的活性没有改变。结论:Lu通过清除自由基,抑制胶原基因表达,在动物体内具有防治肝纤维化作用。展开更多
文摘Objective:To investigate the hepatoprotective effects of Levisticum officinale extract on CCl4-induced hepatotoxicity.Methods:Different doses of Levisticum officinale extract were given orally to rats for 10 days,then rats received a single dose of CCl4(2.5 mL/kg,50%v/v in liquid paraffin).Biochemical and histopathological assays were performed to assess the effects of the extract on liver function and architecture.Moreover,antioxidant and oxidative markers as well as inflammatory and fibrotic indicators were measured.Results:Pretreatment with Levisticum officinale extract significantly mitigated CCl4-induced damage to liver structure,improved serum levels of alanine aminotransferase,aspartate aminotransferase,alkaline phosphatase,urea,total bilirubin,and total protein,enhanced glutathione content and superoxide dismutase and catalase activities in the liver,as well as decreased plasma and hepatic malondialdehyde levels.Immunohistochemical results demonstrated that the extract reduced Ki-67 andα-SMA expression and Masson’s trichrome staining revealed decreased liver collagen in rats treated with Levisticum officinale extract.Moreover,Levisticum officinale extract markedly decreased the gene expressions of TNF-α,IL-6,TGF-β1,MCP-1,and COX-2.Conclusions:Levisticum officinale extract exerts hepatoprotective effects on CCl4-induced hepatotoxicity through antioxidant,anti-inflammatory,and anti-fibrotic activities.
文摘目的:研究黄酮类化合物木犀草素(luteolin,Lu)治疗肝纤维化的作用。方法:30只Wistar大鼠随机分成正常对照组,实验对照组和Lu实验组,实验对照组和Lu实验组给予8wk CCl_4和酒精饮料制备肝纤维化动物模型,Lu实验组从实验开始就用20mg.Kg^(-1).day^(-1)LU灌胃。实验结束后,进行病理学检测和测定肝组织羟脯氨酸含量,用Northern Blot检测Ⅰ型前胶原mRNA表达,并测定了肝组织MDA含量和基质金属蛋白酶(MMPs)的活性。结果:经Lu治疗后,肝脏纤维化程度降低,羟脯氨酸含量减少;同时观察到Lu使肝脏Ⅰ型前胶原mRNA表达降低(5.2±1.4 vs 3.8±1.1,P<0.05)和MDA含量显著减少(12.7±2.6 vs 8.2±2.0μmmol/g,P<0.05),但MMPs的活性没有改变。结论:Lu通过清除自由基,抑制胶原基因表达,在动物体内具有防治肝纤维化作用。