目的从抑制早期生长反应因子-1(Egr-1)介导的白细胞介素8(IL-8)表达的角度探讨强肝胶囊对大鼠非酒精性脂肪肝的改善作用。方法 Wistar大鼠随机分为对照组、模型组和强肝胶囊组,每组各10只。模型组和强肝胶囊组喂食高脂饲料,建立高脂血...目的从抑制早期生长反应因子-1(Egr-1)介导的白细胞介素8(IL-8)表达的角度探讨强肝胶囊对大鼠非酒精性脂肪肝的改善作用。方法 Wistar大鼠随机分为对照组、模型组和强肝胶囊组,每组各10只。模型组和强肝胶囊组喂食高脂饲料,建立高脂血症非酒精性脂肪肝模型,造模同时强肝胶囊组大鼠ig强肝胶囊内容物0.53 mg/g,给药体积为1 m L/100g体质量,模型组ig等量生理盐水。每周给药6 d,持续8周。治疗结束取动物肝脏,氧化酶法测定肝组织中三酰甘油(TG)、总胆固醇(TC)水平;实时荧光定量PCR(RT-q PCR)法检测Egr-1和IL-8 m RNA表达;Western blotting法测定Egr-1蛋白表达;ELISA法测定肝组织中IL-8水平。将大鼠肝脏Hep G2细胞分别进行0.25 mmol/L油酸处理、转染Egr-1 si RNAs并油酸处理、转染pc DNA3.1-Egr-1阳性表达质粒并油酸处理后,RT-q PCR法检测细胞中Egr-1和IL-8 m RNA表达,WB法检测Egr-1蛋白表达,ELISA法检测培养液上清中IL-8水平。结果经过8周治疗,强肝胶囊组TG和、TC水平明显下降(P<0.01);Egr-1 m RNA、Egr-1蛋白表达和IL-8 m RNA、IL-8水平均明显下降(P<0.01)。Egr-1 si RNA#1、si RNA#2能明显降低Egr-1表达水平,采用si RNA干扰Egr-1基因,并用油酸处理Hep G2细胞后,细胞内和培养液上清中IL-8水平较对照细胞显著降低(P<0.01)。转染Egr-1阳性表达质粒导致Egr-1表达量上升(P<0.01),IL-8表达也同步升高(P<0.01)。结论 Egr-1可正向调节IL-8表达。强肝胶囊通过抑制Egr-1介导的IL-8表达,达到改善非酒精性脂肪肝的作用。展开更多
The transcription factor early growth response protein 3 （EGR3） is involved in schizophrenia. We developed a putative rat model of schizophrenia by transfecting lentiviral particles carrying the Egr3 gene into bilat...The transcription factor early growth response protein 3 （EGR3） is involved in schizophrenia. We developed a putative rat model of schizophrenia by transfecting lentiviral particles carrying the Egr3 gene into bilateral hippocampal dentate gyrus. We assessed spatial working memory using the Morris water maze test, and neuronal metabolite levels in bilateral hippocampus and thalamus were determined by 3.0 T proton magnetic resonance spectroscopy. Choline content was significantly greater in the hippocampus after transfection, while N-acetylaspartate and the ratio of N-acetylaspartate to creatine/phosphocreatine in the thalamus were lower than in controls. This study is the first to report evaluation of brain metabolites using 3,0 T proton magnetic resonance spectroscopy in rats transfected with Egr3, and reveals metabolic abnormalities in the hippocampus and thalamus in this putative model of schizophrenia.展开更多
文摘目的从抑制早期生长反应因子-1(Egr-1)介导的白细胞介素8(IL-8)表达的角度探讨强肝胶囊对大鼠非酒精性脂肪肝的改善作用。方法 Wistar大鼠随机分为对照组、模型组和强肝胶囊组,每组各10只。模型组和强肝胶囊组喂食高脂饲料,建立高脂血症非酒精性脂肪肝模型,造模同时强肝胶囊组大鼠ig强肝胶囊内容物0.53 mg/g,给药体积为1 m L/100g体质量,模型组ig等量生理盐水。每周给药6 d,持续8周。治疗结束取动物肝脏,氧化酶法测定肝组织中三酰甘油(TG)、总胆固醇(TC)水平;实时荧光定量PCR(RT-q PCR)法检测Egr-1和IL-8 m RNA表达;Western blotting法测定Egr-1蛋白表达;ELISA法测定肝组织中IL-8水平。将大鼠肝脏Hep G2细胞分别进行0.25 mmol/L油酸处理、转染Egr-1 si RNAs并油酸处理、转染pc DNA3.1-Egr-1阳性表达质粒并油酸处理后,RT-q PCR法检测细胞中Egr-1和IL-8 m RNA表达,WB法检测Egr-1蛋白表达,ELISA法检测培养液上清中IL-8水平。结果经过8周治疗,强肝胶囊组TG和、TC水平明显下降(P<0.01);Egr-1 m RNA、Egr-1蛋白表达和IL-8 m RNA、IL-8水平均明显下降(P<0.01)。Egr-1 si RNA#1、si RNA#2能明显降低Egr-1表达水平,采用si RNA干扰Egr-1基因,并用油酸处理Hep G2细胞后,细胞内和培养液上清中IL-8水平较对照细胞显著降低(P<0.01)。转染Egr-1阳性表达质粒导致Egr-1表达量上升(P<0.01),IL-8表达也同步升高(P<0.01)。结论 Egr-1可正向调节IL-8表达。强肝胶囊通过抑制Egr-1介导的IL-8表达,达到改善非酒精性脂肪肝的作用。
文摘The transcription factor early growth response protein 3 （EGR3） is involved in schizophrenia. We developed a putative rat model of schizophrenia by transfecting lentiviral particles carrying the Egr3 gene into bilateral hippocampal dentate gyrus. We assessed spatial working memory using the Morris water maze test, and neuronal metabolite levels in bilateral hippocampus and thalamus were determined by 3.0 T proton magnetic resonance spectroscopy. Choline content was significantly greater in the hippocampus after transfection, while N-acetylaspartate and the ratio of N-acetylaspartate to creatine/phosphocreatine in the thalamus were lower than in controls. This study is the first to report evaluation of brain metabolites using 3,0 T proton magnetic resonance spectroscopy in rats transfected with Egr3, and reveals metabolic abnormalities in the hippocampus and thalamus in this putative model of schizophrenia.
