目的:探讨冰片、黄芪甲苷(ASTⅣ)和三七总皂苷(PNS)配伍促进脑缺血再灌注后神经修复的作用和Wnt/β-catenin信号机制。方法:采用大鼠局灶性脑缺血再灌注模型,灌胃给药冰片、ASTⅣ、PNS及其配伍药物,神经功能评分和病理形态评价药物对脑...目的:探讨冰片、黄芪甲苷(ASTⅣ)和三七总皂苷(PNS)配伍促进脑缺血再灌注后神经修复的作用和Wnt/β-catenin信号机制。方法:采用大鼠局灶性脑缺血再灌注模型,灌胃给药冰片、ASTⅣ、PNS及其配伍药物,神经功能评分和病理形态评价药物对脑组织损伤的影响,免疫组织化学方法检测脑组织巢蛋白(Nestin)、神经元核抗原(NeuN)反映神经发生,Western blot法检测Wnt/β-catenin信号通路相关蛋白表达。结果:与模型组比较,ASTⅣ+PNS配伍组、冰片+ASTⅣ+PNS配伍高、低剂量组可显著降低神经功能评分(P<0.01),冰片+ASTⅣ+PNS配伍低剂量组降低的效应均强于各药物单用(P<0.01)。病理学检测表明,各用药组细胞损伤明显减轻,ASTⅣ+PNS配伍组效应显著优于单用ASTⅣ组、单用PNS组,冰片+ASTⅣ+PNS配伍低剂量组效应优于各药物单用及ASTⅣ+PNS配伍组(P<0.01,P<0.05)。ASTⅣ+PNS配伍组、冰片+ASTⅣ+PNS配伍低剂量组使Nestin表达增加,冰片+ASTⅣ+PNS配伍低剂量组的作用显著强于各药物单用及ASTⅣ+PNS配伍组(P<0.01,P<0.05)。A S TⅣ+P N S配伍组、冰片+A S TⅣ+P N S配伍低剂量组使N e u N阳性细胞表达增多,药物配伍的作用显著强于单用A S TⅣ与单用冰片组。A S TⅣ+P N S配伍组、冰片+A S TⅣ+P N S配伍低剂量组使Wnt3a、Wnt7b、β-catenin蛋白表达显著增加,糖原合成酶激酶3β(GSK3β)表达下调,冰片+ASTⅣ+PNS配伍低剂量组升高Wnt3a、Wnt7b蛋白表达的效应强于各药物单用及ASTⅣ+PNS配伍组(P<0.01,P<0.05),ASTⅣ+PNS配伍组和冰片+ASTⅣ+PNS配伍低剂量组降低GSK3β表达和增强β-catenin蛋白表达的作用强于各药物单用(P<0.01)。结论:冰片、ASTⅣ、PNS配伍能够通过促进脑内神经细胞的增殖,修复受损的神经细胞,增强抗脑缺血再灌注损伤的作用,其作用与调控Wnt/β-catenin信号通路有关。展开更多
Recent clinical and experimental studies have confirmed the effects of Xinfuli Granule (XG), a compound Chinese medicine in the prevention and treatment of heart failure (HF). This study aimed to investigate the effec...Recent clinical and experimental studies have confirmed the effects of Xinfuli Granule (XG), a compound Chinese medicine in the prevention and treatment of heart failure (HF). This study aimed to investigate the effects and the mechanisms of XG on ventricular reconstruction in rats with acute myocardial infarction (AMI).MethodsSprague-Dawley rats were subjected to left anterior descending branch ligation. The rats that survived 24 h were randomly assigned to five groups: medium-dose of XG group (MI+XGM), high-dose of XG group (MI+XGH), carvedilol group (MI+C), medium-dose of XG + carvedilol group (MI+C+XGM). Fourteen rats underwent identical surgical procedures without artery ligation, serving as sham controls. At 28 days, left ventricular weight to body weight (LVW/BW) and heart weight to body weight (HW/BW) were calculated; left ventricular ejection fraction (LVEF), left ventricular shortening fraction (LVFS), left ventricular internal diameter at systole (LVIDS) were measured by ultrasound; HE staining, Masson staining, and Sirius red staining were used to assess the myocardial pathological and physiological changes as well as myocardial fibrosis area and non-infarct zone I/III collagen ratio. Expression of Smad3 were detected and analyzed by Western blot, immunohistochemistry and immunofluorescence. P-Smad3, Smad2 and Smad7 in the TGF-β/Smads signaling pathway were also analyzed by Western blot.ResultsThe LVIDS (P < 0.01), HW/BW (P < 0.05), type I/III collagen ratio (P < 0.01) and myocardial collagen (P < 0.01) decreased significantly while the LVW/BW, LVFS (P < 0.05) increased significantly in MI+XGM group as compared with those in other groups. The expression of key signal molecules of the TGF-β/Smads signaling pathway, including Smad3, P-Smad3 and Smad2 protein were decreased, while the expression of Smad7 increased in both XG and carvedilol treatment groups as compared to those of the MI group (all P < 0.01). Immunohistochemistry and immunofluorescence further confirmed the down-regulated Smad3 expressi展开更多
文摘目的:探讨冰片、黄芪甲苷(ASTⅣ)和三七总皂苷(PNS)配伍促进脑缺血再灌注后神经修复的作用和Wnt/β-catenin信号机制。方法:采用大鼠局灶性脑缺血再灌注模型,灌胃给药冰片、ASTⅣ、PNS及其配伍药物,神经功能评分和病理形态评价药物对脑组织损伤的影响,免疫组织化学方法检测脑组织巢蛋白(Nestin)、神经元核抗原(NeuN)反映神经发生,Western blot法检测Wnt/β-catenin信号通路相关蛋白表达。结果:与模型组比较,ASTⅣ+PNS配伍组、冰片+ASTⅣ+PNS配伍高、低剂量组可显著降低神经功能评分(P<0.01),冰片+ASTⅣ+PNS配伍低剂量组降低的效应均强于各药物单用(P<0.01)。病理学检测表明,各用药组细胞损伤明显减轻,ASTⅣ+PNS配伍组效应显著优于单用ASTⅣ组、单用PNS组,冰片+ASTⅣ+PNS配伍低剂量组效应优于各药物单用及ASTⅣ+PNS配伍组(P<0.01,P<0.05)。ASTⅣ+PNS配伍组、冰片+ASTⅣ+PNS配伍低剂量组使Nestin表达增加,冰片+ASTⅣ+PNS配伍低剂量组的作用显著强于各药物单用及ASTⅣ+PNS配伍组(P<0.01,P<0.05)。A S TⅣ+P N S配伍组、冰片+A S TⅣ+P N S配伍低剂量组使N e u N阳性细胞表达增多,药物配伍的作用显著强于单用A S TⅣ与单用冰片组。A S TⅣ+P N S配伍组、冰片+A S TⅣ+P N S配伍低剂量组使Wnt3a、Wnt7b、β-catenin蛋白表达显著增加,糖原合成酶激酶3β(GSK3β)表达下调,冰片+ASTⅣ+PNS配伍低剂量组升高Wnt3a、Wnt7b蛋白表达的效应强于各药物单用及ASTⅣ+PNS配伍组(P<0.01,P<0.05),ASTⅣ+PNS配伍组和冰片+ASTⅣ+PNS配伍低剂量组降低GSK3β表达和增强β-catenin蛋白表达的作用强于各药物单用(P<0.01)。结论:冰片、ASTⅣ、PNS配伍能够通过促进脑内神经细胞的增殖,修复受损的神经细胞,增强抗脑缺血再灌注损伤的作用,其作用与调控Wnt/β-catenin信号通路有关。
文摘Recent clinical and experimental studies have confirmed the effects of Xinfuli Granule (XG), a compound Chinese medicine in the prevention and treatment of heart failure (HF). This study aimed to investigate the effects and the mechanisms of XG on ventricular reconstruction in rats with acute myocardial infarction (AMI).MethodsSprague-Dawley rats were subjected to left anterior descending branch ligation. The rats that survived 24 h were randomly assigned to five groups: medium-dose of XG group (MI+XGM), high-dose of XG group (MI+XGH), carvedilol group (MI+C), medium-dose of XG + carvedilol group (MI+C+XGM). Fourteen rats underwent identical surgical procedures without artery ligation, serving as sham controls. At 28 days, left ventricular weight to body weight (LVW/BW) and heart weight to body weight (HW/BW) were calculated; left ventricular ejection fraction (LVEF), left ventricular shortening fraction (LVFS), left ventricular internal diameter at systole (LVIDS) were measured by ultrasound; HE staining, Masson staining, and Sirius red staining were used to assess the myocardial pathological and physiological changes as well as myocardial fibrosis area and non-infarct zone I/III collagen ratio. Expression of Smad3 were detected and analyzed by Western blot, immunohistochemistry and immunofluorescence. P-Smad3, Smad2 and Smad7 in the TGF-β/Smads signaling pathway were also analyzed by Western blot.ResultsThe LVIDS (P < 0.01), HW/BW (P < 0.05), type I/III collagen ratio (P < 0.01) and myocardial collagen (P < 0.01) decreased significantly while the LVW/BW, LVFS (P < 0.05) increased significantly in MI+XGM group as compared with those in other groups. The expression of key signal molecules of the TGF-β/Smads signaling pathway, including Smad3, P-Smad3 and Smad2 protein were decreased, while the expression of Smad7 increased in both XG and carvedilol treatment groups as compared to those of the MI group (all P < 0.01). Immunohistochemistry and immunofluorescence further confirmed the down-regulated Smad3 expressi
