目的观察亚低温后处理对小鼠神经母细胞瘤(N2a)细胞氧糖剥夺/复糖复氧(OGD/R)模型胰岛素降解酶(IDE)的影响。方法采用随机数字表法将生长状态良好的N2a细胞分为对照组、模型组和低温组(n=60),对照组在正常条件下培养,其余2组先氧糖剥夺...目的观察亚低温后处理对小鼠神经母细胞瘤(N2a)细胞氧糖剥夺/复糖复氧(OGD/R)模型胰岛素降解酶(IDE)的影响。方法采用随机数字表法将生长状态良好的N2a细胞分为对照组、模型组和低温组(n=60),对照组在正常条件下培养,其余2组先氧糖剥夺培养3 h后,模型组在正常条件下复糖复氧,低温组于32℃低温下复糖复氧24 h后再在正常条件下复糖复氧。各组于复糖复氧24 h和48 h时,用流式细胞学检测细胞凋亡率,乳酸脱氢酶检测细胞毒性,分光光度法检测半胱氨酸天冬氨酸蛋白酶3(Caspase-3)活性,ELISA法检测β淀粉样蛋白(Aβ)浓度,Western blot和qRT-PCR法检测IDE蛋白和mRNA相对表达。结果与对照组比较,模型组和低温组24 h和48 h细胞凋亡率、细胞毒性和Caspase-3活性明显升高(P<0.05),IDE表达明显降低(P<0.05),模型组Aβ浓度明显升高(P<0.05);与模型组相比,低温组24 h和48 h细胞凋亡率、细胞毒性、Caspase-3活性和Aβ浓度明显降低(P<0.05),IDE蛋白(0.24±0.01 vs 0.12±0.00,0.33±0.01 vs 0.17±0.01)和mRNA(0.67±0.02 vs 0.48±0.01,0.63±0.02 vs 0.41±0.01)相对表达明显升高(P<0.05)。结论亚低温后处理可以减轻小鼠N2a细胞OGD/R模型损伤,该机制可能与上调IDE的表达,减少Aβ的生成,减少细胞凋亡率有关。展开更多
In the study of the mechanism of wound healing after anal fistula surgery,how to scientifically and efficiently promote wound healing is of great significance.At present,modern medical treatment of wounds after anal f...In the study of the mechanism of wound healing after anal fistula surgery,how to scientifically and efficiently promote wound healing is of great significance.At present,modern medical treatment of wounds after anal fistula surgery mostly focuses on physical therapy intervention,new wound dressing and packing,and external application of growth factors.However,these therapies have many problems,and there is still no consensus on their clinical use.Traditional Chinese Medicine(TCM)has several methods to promote wound healing,such as oral administration,rubbing,and fumigation,which have a long history and obvious efficacy,but research in this area is relatively scattered and lacks classification and summarizing.Therefore,this paper analyzes and summarizes the existing research on TCM for promotion of wound healing after anal fistula surgery,carries out targeted analyses according to different clinical syndromes and treatment methods,and analyzes the defects in current research and anticipates future research trends in order to provide theoretical support for the advantages of TCM in promoting wound healing after anal fistula surgery.展开更多
应用模拟人体胃肠消化的SHIME(simulator of the human intestinal microbial ecosystem)体外方法评价肠道菌群对不同农产品中腐霉利生物可给性的作用规律,为正确评价农产品中农药残留健康风险提供理论依据。结果表明:肠道菌群可使葡萄...应用模拟人体胃肠消化的SHIME(simulator of the human intestinal microbial ecosystem)体外方法评价肠道菌群对不同农产品中腐霉利生物可给性的作用规律,为正确评价农产品中农药残留健康风险提供理论依据。结果表明:肠道菌群可使葡萄等13种农产品中腐霉利生物可给性降低30.3%~97.2%,其中以葡萄和大豆中供试农药残留生物可给性的影响较为显著;膳食成分可增强肠道菌群对腐霉利生物可给性的影响,菊粉作用下可使肠道菌群对葡萄中腐霉利生物可给性降低39.6%。大肠杆菌是影响腐霉利生物可给性的主要优势菌,36 h时可使葡萄中腐霉利生物可给性显著降低33.9%。展开更多
文摘目的观察亚低温后处理对小鼠神经母细胞瘤(N2a)细胞氧糖剥夺/复糖复氧(OGD/R)模型胰岛素降解酶(IDE)的影响。方法采用随机数字表法将生长状态良好的N2a细胞分为对照组、模型组和低温组(n=60),对照组在正常条件下培养,其余2组先氧糖剥夺培养3 h后,模型组在正常条件下复糖复氧,低温组于32℃低温下复糖复氧24 h后再在正常条件下复糖复氧。各组于复糖复氧24 h和48 h时,用流式细胞学检测细胞凋亡率,乳酸脱氢酶检测细胞毒性,分光光度法检测半胱氨酸天冬氨酸蛋白酶3(Caspase-3)活性,ELISA法检测β淀粉样蛋白(Aβ)浓度,Western blot和qRT-PCR法检测IDE蛋白和mRNA相对表达。结果与对照组比较,模型组和低温组24 h和48 h细胞凋亡率、细胞毒性和Caspase-3活性明显升高(P<0.05),IDE表达明显降低(P<0.05),模型组Aβ浓度明显升高(P<0.05);与模型组相比,低温组24 h和48 h细胞凋亡率、细胞毒性、Caspase-3活性和Aβ浓度明显降低(P<0.05),IDE蛋白(0.24±0.01 vs 0.12±0.00,0.33±0.01 vs 0.17±0.01)和mRNA(0.67±0.02 vs 0.48±0.01,0.63±0.02 vs 0.41±0.01)相对表达明显升高(P<0.05)。结论亚低温后处理可以减轻小鼠N2a细胞OGD/R模型损伤,该机制可能与上调IDE的表达,减少Aβ的生成,减少细胞凋亡率有关。
基金Shaanxi Natural Science Basic Research Project:Study on the Mechanism of“Wei Nong Zhang Rou”Promoting Wound Healing from the Correlation between Hygrothermal Synthesis and NF-κB/AQP Pathway(No.2020JM-588)National Natural Science Foundation of China:Study on the Mechanism of Inhibiting Wound Inflammation after Anal Fistula Surgery by“Wei Nong Zhang Rou”Method Based on MicroRNA Mediated Macrophage Polarization in Exosomes from Wound Seepage(No.82174384)。
文摘In the study of the mechanism of wound healing after anal fistula surgery,how to scientifically and efficiently promote wound healing is of great significance.At present,modern medical treatment of wounds after anal fistula surgery mostly focuses on physical therapy intervention,new wound dressing and packing,and external application of growth factors.However,these therapies have many problems,and there is still no consensus on their clinical use.Traditional Chinese Medicine(TCM)has several methods to promote wound healing,such as oral administration,rubbing,and fumigation,which have a long history and obvious efficacy,but research in this area is relatively scattered and lacks classification and summarizing.Therefore,this paper analyzes and summarizes the existing research on TCM for promotion of wound healing after anal fistula surgery,carries out targeted analyses according to different clinical syndromes and treatment methods,and analyzes the defects in current research and anticipates future research trends in order to provide theoretical support for the advantages of TCM in promoting wound healing after anal fistula surgery.
文摘应用模拟人体胃肠消化的SHIME(simulator of the human intestinal microbial ecosystem)体外方法评价肠道菌群对不同农产品中腐霉利生物可给性的作用规律,为正确评价农产品中农药残留健康风险提供理论依据。结果表明:肠道菌群可使葡萄等13种农产品中腐霉利生物可给性降低30.3%~97.2%,其中以葡萄和大豆中供试农药残留生物可给性的影响较为显著;膳食成分可增强肠道菌群对腐霉利生物可给性的影响,菊粉作用下可使肠道菌群对葡萄中腐霉利生物可给性降低39.6%。大肠杆菌是影响腐霉利生物可给性的主要优势菌,36 h时可使葡萄中腐霉利生物可给性显著降低33.9%。
