焦虑症是高发的心理疾病,研究表明肥胖是导致焦虑症的重要危险因素。该研究探讨竹节参总皂苷(saponins from Panax japonicus,SPJ)对高脂饮食小鼠焦虑症的改善作用及机制。将50只C57BL/6J小鼠随机分为正常组、高脂饮食组、SPJ低剂量组、...焦虑症是高发的心理疾病,研究表明肥胖是导致焦虑症的重要危险因素。该研究探讨竹节参总皂苷(saponins from Panax japonicus,SPJ)对高脂饮食小鼠焦虑症的改善作用及机制。将50只C57BL/6J小鼠随机分为正常组、高脂饮食组、SPJ低剂量组、SPJ高剂量组。第12周从高脂饮食组取6只小鼠,分为对照组、外源性给予成纤维细胞生长因子21(FGF21)组。旷场和高架十字迷宫实验评价小鼠焦虑样行为;苏木素-伊红(HE)染色和油红O染色观察肝脏、脂肪的病理变化;葡萄糖耐量实验和胰岛素耐量实验评估小鼠糖代谢水平;蛋白免疫印迹法检测肝脏和皮层中FGF21及下游相关蛋白和大脑皮层中脑源性神经营养因子(BDNF)、突触后膜蛋白4(DLG4)和突触素(SYP)表达;实时荧光定量PCR(qPCR)检测肝脏和皮层中FGF21及相关受体基因表达;免疫荧光检测大脑皮层神经元激活物(c-Fos)、FGF21、FGF21辅助受体β-klotho的表达。结果显示,SPJ可显著改善高脂饮食小鼠在高架十字迷宫的开臂区及旷场中心区的活动频率,并上调BDNF、DLG4和SYP表达,有效改善高脂饮食小鼠的焦虑样行为。与正常组相比,高脂饮食组小鼠的肝脏及大脑皮层中FGF21的表达上调,成纤维细胞生长因子受体1(FGFR1)与β-klotho的表达显著下降,提示高脂饮食小鼠呈FGF21抵抗状态;SPJ可显著上调高脂饮食小鼠β-klotho水平,逆转FGF21抵抗。进一步与外源性给予FGF21进行对比,显示SPJ激活大脑皮层区域与其一致,同时SPJ能促进大脑皮层中c-Fos与β-klotho阳性细胞数量及共定位。综上所述,SPJ可有效改善高脂饮食小鼠的焦虑样行为,其机制与上调大脑β-klotho表达,逆转FGF21抵抗,进而激活大脑皮层、杏仁核神经元有关。展开更多
Endometrial injury can cause intrauterine adhesions(IUA)and induce the formation of endometrial fibrosis,leading to infertility and miscarriage.At present,there is no effective treatment method for severe IUA and uter...Endometrial injury can cause intrauterine adhesions(IUA)and induce the formation of endometrial fibrosis,leading to infertility and miscarriage.At present,there is no effective treatment method for severe IUA and uterine basal injury with adhesion area larger than one-third of the uterus.In this study,we prepared FGF1 silk sericin hydrogel material(FGF1-SS hydrogel)to treat endometrial injury and prevent endometrial fibrosis.Compared with the silk sericin hydrogel material(WT-SS hydrogel),FGF1-SS hydrogel significantly promotes the cell migration and infiltration ability of endometrial stromal cells(ESCs).More importantly,FGF1-SS hydrogel can release FGF1 stably for a long time and inhibit the ESCs injury model forms fibrosis through the TGF-β/Smad pathway.In the IUA rat model,FGF1-SS hydrogel treatment effectively restored the number of uterine glands and uterine wall thickness in rats,with a fertility rate of 65.1%66.4%.The results show that FGF1-SS hydrogel is expected to be a candidate to prevent IUA.展开更多
文摘焦虑症是高发的心理疾病,研究表明肥胖是导致焦虑症的重要危险因素。该研究探讨竹节参总皂苷(saponins from Panax japonicus,SPJ)对高脂饮食小鼠焦虑症的改善作用及机制。将50只C57BL/6J小鼠随机分为正常组、高脂饮食组、SPJ低剂量组、SPJ高剂量组。第12周从高脂饮食组取6只小鼠,分为对照组、外源性给予成纤维细胞生长因子21(FGF21)组。旷场和高架十字迷宫实验评价小鼠焦虑样行为;苏木素-伊红(HE)染色和油红O染色观察肝脏、脂肪的病理变化;葡萄糖耐量实验和胰岛素耐量实验评估小鼠糖代谢水平;蛋白免疫印迹法检测肝脏和皮层中FGF21及下游相关蛋白和大脑皮层中脑源性神经营养因子(BDNF)、突触后膜蛋白4(DLG4)和突触素(SYP)表达;实时荧光定量PCR(qPCR)检测肝脏和皮层中FGF21及相关受体基因表达;免疫荧光检测大脑皮层神经元激活物(c-Fos)、FGF21、FGF21辅助受体β-klotho的表达。结果显示,SPJ可显著改善高脂饮食小鼠在高架十字迷宫的开臂区及旷场中心区的活动频率,并上调BDNF、DLG4和SYP表达,有效改善高脂饮食小鼠的焦虑样行为。与正常组相比,高脂饮食组小鼠的肝脏及大脑皮层中FGF21的表达上调,成纤维细胞生长因子受体1(FGFR1)与β-klotho的表达显著下降,提示高脂饮食小鼠呈FGF21抵抗状态;SPJ可显著上调高脂饮食小鼠β-klotho水平,逆转FGF21抵抗。进一步与外源性给予FGF21进行对比,显示SPJ激活大脑皮层区域与其一致,同时SPJ能促进大脑皮层中c-Fos与β-klotho阳性细胞数量及共定位。综上所述,SPJ可有效改善高脂饮食小鼠的焦虑样行为,其机制与上调大脑β-klotho表达,逆转FGF21抵抗,进而激活大脑皮层、杏仁核神经元有关。
基金funded by grants from the National Key Research and Development Program of China(2016YFC1000803)the National Natural Science Foundation of China(No.32030103).
文摘Endometrial injury can cause intrauterine adhesions(IUA)and induce the formation of endometrial fibrosis,leading to infertility and miscarriage.At present,there is no effective treatment method for severe IUA and uterine basal injury with adhesion area larger than one-third of the uterus.In this study,we prepared FGF1 silk sericin hydrogel material(FGF1-SS hydrogel)to treat endometrial injury and prevent endometrial fibrosis.Compared with the silk sericin hydrogel material(WT-SS hydrogel),FGF1-SS hydrogel significantly promotes the cell migration and infiltration ability of endometrial stromal cells(ESCs).More importantly,FGF1-SS hydrogel can release FGF1 stably for a long time and inhibit the ESCs injury model forms fibrosis through the TGF-β/Smad pathway.In the IUA rat model,FGF1-SS hydrogel treatment effectively restored the number of uterine glands and uterine wall thickness in rats,with a fertility rate of 65.1%66.4%.The results show that FGF1-SS hydrogel is expected to be a candidate to prevent IUA.
