AIM： To investigate the effcacy of fu-qi granule （FQG） on carbon tetrachloride （CCl4） induced liver fbrosis in rats and the underlying mechanisms. METHODS： Sixty rats were randomly divided into six groups： norm...AIM： To investigate the effcacy of fu-qi granule （FQG） on carbon tetrachloride （CCl4） induced liver fbrosis in rats and the underlying mechanisms. METHODS： Sixty rats were randomly divided into six groups： normal control group, CCl4 induced liver fbrosis group, AnluoHuaxianWan group and three treatment groups of FQG. Treatment of rats with intraperitoneal injection of carbon tetrachloride solution at 0.3 mL per 100 g body weigh twice a week for 8 wk. The normal control group the rats were given the media （olive oil） at the same time. In the frst 2 wk, rats were raised with feedstuff （80% corn meal, 20% lard, 0.5% cholesterol）. Serum samples were collected for alanine transaminase, aspartate aminotransferase, alkaline phosphatase, albumin, total protein assay and typical histopathological changes was observed in Hematoxylin-eosin staining sections. Smooth muscle alpha actin （α-SMA） was analyzed with immunohistochemistry. Mammalian target of rapamycin （mTOR） and hypoxia-inducible factor-1 （HIF-1α） expressions were detected by Western blot-ting. Tissue inhibitor of matrix metalloproteinases-1 （TIMP-1） and matrix metalloproteinases-9 （MMP-9） were measured with semi-quantitative reverse transcriptase-polymerase chain reaction.RESULTS： FQG significantly reduced the serum levels of alanine transaminase, aspartate aminotransferase, alkaline phosphatase and increased the serum contents of albumin, total protein in rats with liver fibrosis. Moreover, FQG promoted extracellular matrix degradation by increasing MMP-9 and inhibiting TIMP-1 and α-SMA. mTOR and HIF-1α expression in liver significantly decreased in the rats treated with FQG. CONCLUSION： The results indicated that FQG signi-fcantly reverse fbrosis induced by CCl4, which should be developed as a new and promising preparation for the prevention of liver fbrosis.展开更多
目的:研究哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)信号通路蛋白在人脑胶质瘤中的表达及其临床意义。方法:选取山东大学齐鲁医院和聊城市人民医院神经外科2007年7月至2010年5月间手术切除并经病理证实的人脑胶质瘤...目的:研究哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)信号通路蛋白在人脑胶质瘤中的表达及其临床意义。方法:选取山东大学齐鲁医院和聊城市人民医院神经外科2007年7月至2010年5月间手术切除并经病理证实的人脑胶质瘤石蜡标本87例(Ⅰ～Ⅱ级27例、Ⅲ级24例、Ⅳ级36例),应用免疫组织化学法检测胶质瘤组织中mTOR信号通路关键蛋白pAKT、pmTOR和p-p70S6K的表达,分析它们与胶质瘤患者临床病理特征的关系。结果:pAKT、pmTOR和p-p70S6K在各级胶质瘤中的阳性率分别为:Ⅰ～Ⅱ级70.4%(19/27)、Ⅲ级70.8%(17/24)、Ⅳ级75.0%(27/36),Ⅰ～Ⅱ级77.8%(21/27)、Ⅲ级75.0%(18/24)、Ⅳ级72.2%(26/36),Ⅰ～Ⅱ级63.0%(17/27)、Ⅲ级70.8%(17/24)、Ⅳ级80.6%(29/36);各阳性表达率间无明显差异(P>0.05),但它们的表达水平均随着胶质瘤病理级别的增高而升高(P=0.0001,0.0063,0.0001),而与患者的性别、年龄、肿瘤大小和术前KPS评分等参数无关。pAKT、pmTOR和p-p70S6K三者共表达于42例胶质瘤组织中,在其余45例中仅有一种或两种表达。结论:mTOR信号通路蛋白在胶质瘤的发生、发展中起着重要的作用,可能是胶质瘤治疗的潜在靶点。展开更多
基金Supported by The National Natural Sciences Foundation,No.81173571National Basic Research Program of China,No.2007CB512607The Major Projects of the National Science and Technology,No.2012ZX10005010-002-002
文摘AIM： To investigate the effcacy of fu-qi granule （FQG） on carbon tetrachloride （CCl4） induced liver fbrosis in rats and the underlying mechanisms. METHODS： Sixty rats were randomly divided into six groups： normal control group, CCl4 induced liver fbrosis group, AnluoHuaxianWan group and three treatment groups of FQG. Treatment of rats with intraperitoneal injection of carbon tetrachloride solution at 0.3 mL per 100 g body weigh twice a week for 8 wk. The normal control group the rats were given the media （olive oil） at the same time. In the frst 2 wk, rats were raised with feedstuff （80% corn meal, 20% lard, 0.5% cholesterol）. Serum samples were collected for alanine transaminase, aspartate aminotransferase, alkaline phosphatase, albumin, total protein assay and typical histopathological changes was observed in Hematoxylin-eosin staining sections. Smooth muscle alpha actin （α-SMA） was analyzed with immunohistochemistry. Mammalian target of rapamycin （mTOR） and hypoxia-inducible factor-1 （HIF-1α） expressions were detected by Western blot-ting. Tissue inhibitor of matrix metalloproteinases-1 （TIMP-1） and matrix metalloproteinases-9 （MMP-9） were measured with semi-quantitative reverse transcriptase-polymerase chain reaction.RESULTS： FQG significantly reduced the serum levels of alanine transaminase, aspartate aminotransferase, alkaline phosphatase and increased the serum contents of albumin, total protein in rats with liver fibrosis. Moreover, FQG promoted extracellular matrix degradation by increasing MMP-9 and inhibiting TIMP-1 and α-SMA. mTOR and HIF-1α expression in liver significantly decreased in the rats treated with FQG. CONCLUSION： The results indicated that FQG signi-fcantly reverse fbrosis induced by CCl4, which should be developed as a new and promising preparation for the prevention of liver fbrosis.
文摘目的:研究哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)信号通路蛋白在人脑胶质瘤中的表达及其临床意义。方法:选取山东大学齐鲁医院和聊城市人民医院神经外科2007年7月至2010年5月间手术切除并经病理证实的人脑胶质瘤石蜡标本87例(Ⅰ～Ⅱ级27例、Ⅲ级24例、Ⅳ级36例),应用免疫组织化学法检测胶质瘤组织中mTOR信号通路关键蛋白pAKT、pmTOR和p-p70S6K的表达,分析它们与胶质瘤患者临床病理特征的关系。结果:pAKT、pmTOR和p-p70S6K在各级胶质瘤中的阳性率分别为:Ⅰ～Ⅱ级70.4%(19/27)、Ⅲ级70.8%(17/24)、Ⅳ级75.0%(27/36),Ⅰ～Ⅱ级77.8%(21/27)、Ⅲ级75.0%(18/24)、Ⅳ级72.2%(26/36),Ⅰ～Ⅱ级63.0%(17/27)、Ⅲ级70.8%(17/24)、Ⅳ级80.6%(29/36);各阳性表达率间无明显差异(P>0.05),但它们的表达水平均随着胶质瘤病理级别的增高而升高(P=0.0001,0.0063,0.0001),而与患者的性别、年龄、肿瘤大小和术前KPS评分等参数无关。pAKT、pmTOR和p-p70S6K三者共表达于42例胶质瘤组织中,在其余45例中仅有一种或两种表达。结论:mTOR信号通路蛋白在胶质瘤的发生、发展中起着重要的作用,可能是胶质瘤治疗的潜在靶点。
文摘目的探究干扰小RNA(si RNA)沉默小窝蛋白-1(CAV1)基因表达对人绒毛膜癌JEG-3细胞侵袭、迁移能力的影响及其可能的作用机制。方法将人绒毛膜癌JEG-3细胞分为对照组(不进行转染)、阴性组(转染si RNA-NC)和si RNA-CAV1组(转染si RNA-CAV1)。Transwell法检测下调CAV1表达对细胞侵袭、迁移能力的影响;实时定量PCR(q RT-PCR)检测转染细胞中CAV1 m RNA的表达水平;蛋白质印迹法(Western blot)检测细胞中CAV1、丝苏氨酸蛋白激酶(AKT)、雷帕霉素靶蛋白(MTOR)、核糖体p70S6激酶(p70S6K)、磷酸化AKT(p-AKT)、磷酸化MTOR(p-MTOR)、磷酸化p70S6K(p-p70S6K)蛋白的表达水平。结果 si RNA-CAV1组JEG-3细胞中CAV1 m RNA和蛋白的相对表达量均低于对照组(P﹤0.05);si RNA-CAV1组JEG-3细胞的侵袭数目、迁移数目均低于对照组(P﹤0.05);si RNA-CAV1组JEG-3细胞中AKT、MTOR、p70S6K以及磷酸化水平均低于对照组(P﹤0.05)。结论沉默CAV1表达可以抑制人绒毛膜癌JEG-3细胞的侵袭和迁移能力,该作用与AKT/MTOR/p70S6K信号通路有关。
