No efficient therapy for liver fibrosis has been available. This study wasaimed to provide evidence that the introduction of a plasmid expressing antisense tissue inhibitorof metalloproteinase-1 (TIMP-1) into a rat mo...No efficient therapy for liver fibrosis has been available. This study wasaimed to provide evidence that the introduction of a plasmid expressing antisense tissue inhibitorof metalloproteinase-1 (TIMP-1) into a rat model of immunologically induced liver fibrosis canresult in the increased activity of interstitial collagenase, thus enhancing the degradation ofcollagen. Real-time nested polymerase chain reaction ( RT-Nested-PCR) and gene recombinationtechniques were used to construct a rat antisense TIMP-1 recombinant plasmid that can be expressedin eukaryotic cells. Both the recombinant plasmid and an empty vector ( _(pc)DNA3 ) wereencapsulated with glycosyl-poly-L-lysine and injected into rats suffering from pig serum-inducedliver fibrosis. The expression of ex'ogenous transfected plasmid was assessed by Northern blot,RT-PCR, and Western blot. Hepatic interstitial collagenase activity was detected usingfluorescinisothiocyanate ( FITC)-labeledtype Ⅰ collagen. In addition to hepatic hydroxyprolinecontent, hepatic collagen types Ⅰ and Ⅲ were detected by immunohistochemical staining, and thestages of liver fibrosis by Van Gieson staining. Exogenous antisense TIMP-1 was successfullyexpressed in vivo and could block the gene and protein expression of TIMP-1. Active and latenthepatic interstitial collagenase activities were elevated (P<0. 01), hepatic hydroxyproline contentand the accumulation of collagen types Ⅰ and Ⅲ were lowered, and liver fibrosis was alleviated inthe antisense TIMP-1 group (P <0. 01) as compared with the model group. The results demonstratethat antisense TIMP-1 recombinant plasmids have some inhibitory effect on liver fibrosis.展开更多
目的比较炙甘草汤与真武汤对老年慢性心衰患者血流动力学、基质金属蛋白酶-9(matrix metalloproteinase-9,MMP-9)、基质金属蛋白酶抑制剂-1(tissue inhibitor of metalloproteinase-1,TIMP-1)及心肌酶谱的影响差异。方法选取石河子大学...目的比较炙甘草汤与真武汤对老年慢性心衰患者血流动力学、基质金属蛋白酶-9(matrix metalloproteinase-9,MMP-9)、基质金属蛋白酶抑制剂-1(tissue inhibitor of metalloproteinase-1,TIMP-1)及心肌酶谱的影响差异。方法选取石河子大学医学院第一附属医院收治的老年慢性心衰患者40例,随机分为炙甘草汤组(n=20)与真武汤组(n=20)。2组患者均给予常规治疗,在常规治疗基础上按照不同分组给予相应药物治疗,治疗2周为1个疗程,共治疗2个疗程。治疗结束后,比较2组患者的血流动力学、MMP-9、TIMP-1及心肌酶谱指标。结果经治疗,2组患者血流动力学均改善,炙甘草汤组血流动力学各项指标改善优于真武汤组(P<0.05)。炙甘草汤组血清MMP-9及MMP-9/TIMP-1较真武汤组降低(P<0.05),炙甘草汤组血清TIMP-1较真武汤组增高(P<0.05)。治疗后2组心肌酶指标均降低,炙甘草汤各指标较真武汤组显著降低(P<0.05)。结论炙甘草汤能够明显改善老年慢性心力衰竭症状,疗效优于真武汤,对临床具有指导意义。展开更多
文摘No efficient therapy for liver fibrosis has been available. This study wasaimed to provide evidence that the introduction of a plasmid expressing antisense tissue inhibitorof metalloproteinase-1 (TIMP-1) into a rat model of immunologically induced liver fibrosis canresult in the increased activity of interstitial collagenase, thus enhancing the degradation ofcollagen. Real-time nested polymerase chain reaction ( RT-Nested-PCR) and gene recombinationtechniques were used to construct a rat antisense TIMP-1 recombinant plasmid that can be expressedin eukaryotic cells. Both the recombinant plasmid and an empty vector ( _(pc)DNA3 ) wereencapsulated with glycosyl-poly-L-lysine and injected into rats suffering from pig serum-inducedliver fibrosis. The expression of ex'ogenous transfected plasmid was assessed by Northern blot,RT-PCR, and Western blot. Hepatic interstitial collagenase activity was detected usingfluorescinisothiocyanate ( FITC)-labeledtype Ⅰ collagen. In addition to hepatic hydroxyprolinecontent, hepatic collagen types Ⅰ and Ⅲ were detected by immunohistochemical staining, and thestages of liver fibrosis by Van Gieson staining. Exogenous antisense TIMP-1 was successfullyexpressed in vivo and could block the gene and protein expression of TIMP-1. Active and latenthepatic interstitial collagenase activities were elevated (P<0. 01), hepatic hydroxyproline contentand the accumulation of collagen types Ⅰ and Ⅲ were lowered, and liver fibrosis was alleviated inthe antisense TIMP-1 group (P <0. 01) as compared with the model group. The results demonstratethat antisense TIMP-1 recombinant plasmids have some inhibitory effect on liver fibrosis.
文摘目的比较炙甘草汤与真武汤对老年慢性心衰患者血流动力学、基质金属蛋白酶-9(matrix metalloproteinase-9,MMP-9)、基质金属蛋白酶抑制剂-1(tissue inhibitor of metalloproteinase-1,TIMP-1)及心肌酶谱的影响差异。方法选取石河子大学医学院第一附属医院收治的老年慢性心衰患者40例,随机分为炙甘草汤组(n=20)与真武汤组(n=20)。2组患者均给予常规治疗,在常规治疗基础上按照不同分组给予相应药物治疗,治疗2周为1个疗程,共治疗2个疗程。治疗结束后,比较2组患者的血流动力学、MMP-9、TIMP-1及心肌酶谱指标。结果经治疗,2组患者血流动力学均改善,炙甘草汤组血流动力学各项指标改善优于真武汤组(P<0.05)。炙甘草汤组血清MMP-9及MMP-9/TIMP-1较真武汤组降低(P<0.05),炙甘草汤组血清TIMP-1较真武汤组增高(P<0.05)。治疗后2组心肌酶指标均降低,炙甘草汤各指标较真武汤组显著降低(P<0.05)。结论炙甘草汤能够明显改善老年慢性心力衰竭症状,疗效优于真武汤,对临床具有指导意义。
