Trichloroethylene （TCE） is a major pollutant that affects both occupational and general environments. The liver is an important target organ of TCEE. Substantial efforts and remarkable progress into understanding TC...Trichloroethylene （TCE） is a major pollutant that affects both occupational and general environments. The liver is an important target organ of TCEE. Substantial efforts and remarkable progress into understanding TCE cytotoxicity have been made in cultured liver cells. However, the molecular mechanisms by which TCE induces hepatotoxicity are not well understood. SET （also known as protein phosphatase 2A inhibitor, 12PP2A, or template-activating factor-I, TAF-D is a nuclear protein that regulates histone modification, gene transcription, DNA replication, nucleosome assembly,展开更多
目的观察葛黄颗粒含药血清对乙醇损伤的人肝细胞L-02修复作用,并探讨其可能机制。方法 (1)将L-02细胞分为A、B、C、D、E、F组。除F组外,其余各组均加入乙醇培养基培养24 h制备肝细胞损伤模型,造模后吸走培养液。D、F组加入空白血清(10%...目的观察葛黄颗粒含药血清对乙醇损伤的人肝细胞L-02修复作用,并探讨其可能机制。方法 (1)将L-02细胞分为A、B、C、D、E、F组。除F组外,其余各组均加入乙醇培养基培养24 h制备肝细胞损伤模型,造模后吸走培养液。D、F组加入空白血清(10%正常大鼠血清),A组加入1.25%葛黄颗粒含药血清+8.75%正常大鼠血清,B组加入2.5%葛黄颗粒含药血清+7.5%正常大鼠血清,C组加入5%葛黄颗粒含药血清+5%正常大鼠血清,E组加入5%美他多辛含药血清+5%正常大鼠血清,继续培养6、12、24 h。比较各组细胞上清液谷草转氨酶(AST)、乳酸脱氢酶(LDH)活力。(2)将L-02细胞按2×104个/孔接种于6孔板中,将其分为a、b、c、d组。除d组外,其余各组均加入乙醇制备肝细胞损伤模型,造模后吸走培养液。b、d组加入空白血清,a组加入5%葛黄颗粒含药血清,c组加入5%美他多辛含药血清,继续培养24 h。比较各组丙二醛(MDA)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-px)、细胞活性氧(ROS)、线粒体膜电位(MMP)、三磷酸腺苷(ATP)。结果与F组比较,D组各时点AST、LDH升高;与D组比较,B组24 h AST、LDH降低,C、E组12 h和24 h的AST、LDH降低;与A组比较,B组24 h AST降低,C组24 h AST及12 h LDH降低,E组12、24 h AST和LDH降低;与B组比较,C、E组12 h AST、LDH降低;与同组6 h比较,C组24 h AST降低,12、24 h LDH降低;与同组12 h比较,B、C、E组24 h AST降低,C组24 h LDH降低;P均<0.05。与d组比较,b组SOD、GSH-px、MMP、ATP降低,MDA、ROS升高(P均<0.05);与b组比较,a组和c组SOD、GSH-px、MMP、ATP升高,MDA、ROS降低(P均<0.05)。结论葛黄颗粒含药血清对乙醇致L-02细胞损伤有一定修复作用,其机制可能是调整细胞内氧化应激水平和线粒体功能。展开更多
基金supported by NSFC (the National Natural Science Foundation of China) [81273126, 30972454]the Key Project of Guangdong Natural Science Foundation [S2012020010903]+2 种基金the Project of Shenzhen Basic Research Plan [JCYJ20120616 154222545]the Upgrade Scheme of Shenzhen Municipal Key Laboratory [CXB201005260068A]Medical Scientific Research Foundation of Guangdong Province (A2012577)
文摘Trichloroethylene （TCE） is a major pollutant that affects both occupational and general environments. The liver is an important target organ of TCEE. Substantial efforts and remarkable progress into understanding TCE cytotoxicity have been made in cultured liver cells. However, the molecular mechanisms by which TCE induces hepatotoxicity are not well understood. SET （also known as protein phosphatase 2A inhibitor, 12PP2A, or template-activating factor-I, TAF-D is a nuclear protein that regulates histone modification, gene transcription, DNA replication, nucleosome assembly,
文摘目的观察葛黄颗粒含药血清对乙醇损伤的人肝细胞L-02修复作用,并探讨其可能机制。方法 (1)将L-02细胞分为A、B、C、D、E、F组。除F组外,其余各组均加入乙醇培养基培养24 h制备肝细胞损伤模型,造模后吸走培养液。D、F组加入空白血清(10%正常大鼠血清),A组加入1.25%葛黄颗粒含药血清+8.75%正常大鼠血清,B组加入2.5%葛黄颗粒含药血清+7.5%正常大鼠血清,C组加入5%葛黄颗粒含药血清+5%正常大鼠血清,E组加入5%美他多辛含药血清+5%正常大鼠血清,继续培养6、12、24 h。比较各组细胞上清液谷草转氨酶(AST)、乳酸脱氢酶(LDH)活力。(2)将L-02细胞按2×104个/孔接种于6孔板中,将其分为a、b、c、d组。除d组外,其余各组均加入乙醇制备肝细胞损伤模型,造模后吸走培养液。b、d组加入空白血清,a组加入5%葛黄颗粒含药血清,c组加入5%美他多辛含药血清,继续培养24 h。比较各组丙二醛(MDA)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-px)、细胞活性氧(ROS)、线粒体膜电位(MMP)、三磷酸腺苷(ATP)。结果与F组比较,D组各时点AST、LDH升高;与D组比较,B组24 h AST、LDH降低,C、E组12 h和24 h的AST、LDH降低;与A组比较,B组24 h AST降低,C组24 h AST及12 h LDH降低,E组12、24 h AST和LDH降低;与B组比较,C、E组12 h AST、LDH降低;与同组6 h比较,C组24 h AST降低,12、24 h LDH降低;与同组12 h比较,B、C、E组24 h AST降低,C组24 h LDH降低;P均<0.05。与d组比较,b组SOD、GSH-px、MMP、ATP降低,MDA、ROS升高(P均<0.05);与b组比较,a组和c组SOD、GSH-px、MMP、ATP升高,MDA、ROS降低(P均<0.05)。结论葛黄颗粒含药血清对乙醇致L-02细胞损伤有一定修复作用,其机制可能是调整细胞内氧化应激水平和线粒体功能。
