To investigate the effects of mycophenolate mofetil (MMF) on the process of renal interstitial fibrosis,unilateral ureteral obstruction (UUO) model was established in rats Twenty Sprague-Dawley rats underwent UUO an...To investigate the effects of mycophenolate mofetil (MMF) on the process of renal interstitial fibrosis,unilateral ureteral obstruction (UUO) model was established in rats Twenty Sprague-Dawley rats underwent UUO and received vehicle ( n =10) or MMF (20 mg kg -1 d -1 , by daily gastric gavage, n= 10) during a period of 5 days following surgery, and the additional 10 rats were served as sham-operated group The rats were killed 5 days after surgery Immunohistochemistry was performed on renal tissue for proliferating cell nuclear antigen (PCNA), α-smooth muscle actin (α-SMA) and type Ⅰ and Ⅲ collagen (colⅠ, colⅢ) Histological studies were also done by MASSON staining Five days after surgery, proliferating cells in tubules, interstitium as well as interstitial myofibroblast (MyoF) infiltration and interstitial colⅠ, colⅢ deposition were all significantly reduced by MMF treatment MMF also alleviated the histological changes of UUO rats These results suggested that the reduction of interstitial MyoF infiltration may be an important event by which MMF prevents renal injury caused by UUO and MMF could be used to limit the progression of renal fibrosis展开更多
目的:探讨大黄酸对人肾小管上皮细胞(HK-2)血小板反应蛋白1(TSP-1)和转化生长因子β1(TGF-β1)表达的影响。方法:体外培养HK-2细胞,观察AngⅡ(1×10-7mol/L)诱导下低、中和高浓度的大黄酸(10μg/ml、20μg/ml和40μg/ml)对HK-2TSP-1...目的:探讨大黄酸对人肾小管上皮细胞(HK-2)血小板反应蛋白1(TSP-1)和转化生长因子β1(TGF-β1)表达的影响。方法:体外培养HK-2细胞,观察AngⅡ(1×10-7mol/L)诱导下低、中和高浓度的大黄酸(10μg/ml、20μg/ml和40μg/ml)对HK-2TSP-1、TGF-β1的mRNA和蛋白表达的影响。采用Real Time PCR检测细胞TSP-1、TGF-β1mRNA表达,采用Westernb lot检测TSP-1、TGF-β1蛋白表达。培养上清液中TGF-β1和活性TGF-β1检测采用ELISA法。结果:与空白对照组比较,AngⅡ(1×10-7mol/L)明显上调了HK-2TSP-1的mRNA表达(3.84±0.48vs1.32±0.19;P<0.05)、伴有TGF-β1的mRNA表达增加(3.68±0.46vs1.18±0.13;P<0.05)。同时AngⅡ(1×10-7mol/L)也上调TSP-1蛋白表达(0.5246±0.0936 vs 0.1015±0.0768;P<0.01),伴有TGF-β1蛋白表达的增加(0.5948±0.0624 vs 0.1264±0.0811;P<0.01)。与AngⅡ阳性对照组比较,中浓度和高浓度大黄酸明显抑制了AngⅡ(1×10-7mol/L)诱导的TSP-1、TGF-β1的mRNA(P<0.05,P<0.01)和蛋白表达(P<0.05,P<0.01)。中浓度大黄酸干预组总的TGF-β1含量和活性TGF-β1含量均减少,(P<0.05);高浓度大黄酸干预组总的TGF-β1含量和活性TGF-β1含量均明显减少(P<0.01)。结论:大黄酸能抑制人肾小管上皮细胞TSP-1、TGF-β1的mRNA和蛋白表达,抑制TGF-β分泌。展开更多
文摘To investigate the effects of mycophenolate mofetil (MMF) on the process of renal interstitial fibrosis,unilateral ureteral obstruction (UUO) model was established in rats Twenty Sprague-Dawley rats underwent UUO and received vehicle ( n =10) or MMF (20 mg kg -1 d -1 , by daily gastric gavage, n= 10) during a period of 5 days following surgery, and the additional 10 rats were served as sham-operated group The rats were killed 5 days after surgery Immunohistochemistry was performed on renal tissue for proliferating cell nuclear antigen (PCNA), α-smooth muscle actin (α-SMA) and type Ⅰ and Ⅲ collagen (colⅠ, colⅢ) Histological studies were also done by MASSON staining Five days after surgery, proliferating cells in tubules, interstitium as well as interstitial myofibroblast (MyoF) infiltration and interstitial colⅠ, colⅢ deposition were all significantly reduced by MMF treatment MMF also alleviated the histological changes of UUO rats These results suggested that the reduction of interstitial MyoF infiltration may be an important event by which MMF prevents renal injury caused by UUO and MMF could be used to limit the progression of renal fibrosis
文摘目的:探讨大黄酸对人肾小管上皮细胞(HK-2)血小板反应蛋白1(TSP-1)和转化生长因子β1(TGF-β1)表达的影响。方法:体外培养HK-2细胞,观察AngⅡ(1×10-7mol/L)诱导下低、中和高浓度的大黄酸(10μg/ml、20μg/ml和40μg/ml)对HK-2TSP-1、TGF-β1的mRNA和蛋白表达的影响。采用Real Time PCR检测细胞TSP-1、TGF-β1mRNA表达,采用Westernb lot检测TSP-1、TGF-β1蛋白表达。培养上清液中TGF-β1和活性TGF-β1检测采用ELISA法。结果:与空白对照组比较,AngⅡ(1×10-7mol/L)明显上调了HK-2TSP-1的mRNA表达(3.84±0.48vs1.32±0.19;P<0.05)、伴有TGF-β1的mRNA表达增加(3.68±0.46vs1.18±0.13;P<0.05)。同时AngⅡ(1×10-7mol/L)也上调TSP-1蛋白表达(0.5246±0.0936 vs 0.1015±0.0768;P<0.01),伴有TGF-β1蛋白表达的增加(0.5948±0.0624 vs 0.1264±0.0811;P<0.01)。与AngⅡ阳性对照组比较,中浓度和高浓度大黄酸明显抑制了AngⅡ(1×10-7mol/L)诱导的TSP-1、TGF-β1的mRNA(P<0.05,P<0.01)和蛋白表达(P<0.05,P<0.01)。中浓度大黄酸干预组总的TGF-β1含量和活性TGF-β1含量均减少,(P<0.05);高浓度大黄酸干预组总的TGF-β1含量和活性TGF-β1含量均明显减少(P<0.01)。结论:大黄酸能抑制人肾小管上皮细胞TSP-1、TGF-β1的mRNA和蛋白表达,抑制TGF-β分泌。