目的观察预先给予半夏泻心汤对束缚水浸应激大鼠胃黏膜上皮细胞B细胞淋巴瘤基因-2(Bcl-2)、Bax m RNA表达、活化的半胱氨酸蛋白酶-3(Caspase-3)表达的影响,探讨半夏泻心汤抗应激性胃黏膜损伤的作用机制。方法 40只雄性SD大鼠随机分为空...目的观察预先给予半夏泻心汤对束缚水浸应激大鼠胃黏膜上皮细胞B细胞淋巴瘤基因-2(Bcl-2)、Bax m RNA表达、活化的半胱氨酸蛋白酶-3(Caspase-3)表达的影响,探讨半夏泻心汤抗应激性胃黏膜损伤的作用机制。方法 40只雄性SD大鼠随机分为空白组、模型组、中药组(半夏泻心汤组)、西药组(奥美拉唑组)。每组动物相应药物灌胃3 d。大鼠束缚水浸应激(WRS)造模。观察大鼠胃黏膜损伤指数(UI);RT-PCR法检测各组大鼠胃黏膜中Bcl-2、Bax m RNA表达水平;western-blot法检测胃黏膜活化的Caspase-3表达变化。结果与空白组比较,模型组UI明显升高(P<0.01),Bcl-2 m RNA表达显著减弱(P<0.01),Bax m RNA、活化的Caspase-3表达明显增强(P<0.01);与模型组比较,中药组、西药组UI明显降低(P<0.01),胃黏膜中Bcl-2 m RNA表达显著上调(P<0.01),活化的Caspase-3表达显著下调(P<0.01)。结论半夏泻心汤可显著对抗应激性胃黏膜损伤,其抗损伤发生的机制之一可能是通过上调胃黏膜中Bcl-2 m RNA表达,下调活化的凋亡执行因子Caspase-3的表达,从而抑制胃黏膜上皮细胞的过度凋亡,发挥胃黏膜抗应激性损伤的作用。展开更多
目的检测30周糖尿病大鼠胃排空及胃黏膜细胞凋亡的情况。方法取SPF级SD大鼠,应用链脲佐菌素(S treptozotoc in,STZ)建立糖尿病大鼠模型,持续30周后,应用酚红实验和光密度的方法检测胃排空,采用T une l法检测胃黏膜的细胞凋亡。结果30周...目的检测30周糖尿病大鼠胃排空及胃黏膜细胞凋亡的情况。方法取SPF级SD大鼠,应用链脲佐菌素(S treptozotoc in,STZ)建立糖尿病大鼠模型,持续30周后,应用酚红实验和光密度的方法检测胃排空,采用T une l法检测胃黏膜的细胞凋亡。结果30周糖尿病大鼠胃排空异常,中药组与模型组比较有所改善;胃黏膜细胞凋亡严重的是模型组,中药组与正常组无显著差异。结论实验30周糖尿病大鼠胃排空异常,胃黏膜有不同程度的细胞凋亡,模型组细胞凋亡程度明显,中药组与正常组无显著差异表明中药对胃黏膜的保护作用。展开更多
Objective：To explore the effect of bile salt and bile acid on cultured eternalized human gastric mucosa epithelium GES-1 cells. Methods：Cultured eternalized human gastric mucosa epithelium GES-1 cells were treated w...Objective：To explore the effect of bile salt and bile acid on cultured eternalized human gastric mucosa epithelium GES-1 cells. Methods：Cultured eternalized human gastric mucosa epithelium GES-1 cells were treated with media containing 6 different kinds of bile salts and 3 different kinds of bile acids and their mixture with different concentrations： GCDC（glycochenodeoxychoμte）, GDC （glycodeoxychoμte）, GC（glycochoμte）, TCDC（taurochenodeoxychoμte）, TDC（taurodeoxychoμte）, TC （taurochoμte）, LCA （lithocholicacid）, CA（cholic acid）, DCA（deoxycholic acid）（50 μ mol/L,250 μ mol/L,500 μ mol/L,1000 μ mol/L）, DY（mixture of bile salts） and DS（mixture of bile acids）（250 μ mol/L,500 μ mol/L,1000 μ mol/L,1500 μ mol/L, 2000 μ mol/L）, in comparison with the control group（in normal media without bile salts and bile acids）. Cell proliferation was assessed by MTT（3-[4,5-Dimethylthiaolyl]-2,5- diphenyl-tetrazolium bromide） assay for 72 hours with different concentrations and the apoptotic cells were assayed by flow cytometry （FCM） with Annex V-FITC conjugated with propidium iodide（PI） staining for 24 hours with different concentrations（1500,2000 μt mol/L）. Results：There was no significant difference in morphology and cell proliferation in GC group after 24-72 h. Low concentration（50 μ mol/L） of GCDC, GDC, TCDC, TDC and TC accelerated gastric epithelial cell growth in a dosage-time dependent manner. At middle concentration （250-500 μ mol/L）, it showed positive effect after 24-48 h, while negative effect after 72 h. At high concentration（1000 μ mol/L）, it accelerated gastric epithelial cell growth after 24h and show consistent inhibition even leading to necrosis after 48-72 h. LCA and CA showed a positive effect on the concentration of 50 μ mol/L after 24-72 h, while 250-1000 μ mol/L showed a trend towards apoptosis after 24-72 h. At 50-500 μmol/L, DCA showed proliferation after 24 h and apoptosis after 48-72 h, but showed n展开更多
文摘目的观察预先给予半夏泻心汤对束缚水浸应激大鼠胃黏膜上皮细胞B细胞淋巴瘤基因-2(Bcl-2)、Bax m RNA表达、活化的半胱氨酸蛋白酶-3(Caspase-3)表达的影响,探讨半夏泻心汤抗应激性胃黏膜损伤的作用机制。方法 40只雄性SD大鼠随机分为空白组、模型组、中药组(半夏泻心汤组)、西药组(奥美拉唑组)。每组动物相应药物灌胃3 d。大鼠束缚水浸应激(WRS)造模。观察大鼠胃黏膜损伤指数(UI);RT-PCR法检测各组大鼠胃黏膜中Bcl-2、Bax m RNA表达水平;western-blot法检测胃黏膜活化的Caspase-3表达变化。结果与空白组比较,模型组UI明显升高(P<0.01),Bcl-2 m RNA表达显著减弱(P<0.01),Bax m RNA、活化的Caspase-3表达明显增强(P<0.01);与模型组比较,中药组、西药组UI明显降低(P<0.01),胃黏膜中Bcl-2 m RNA表达显著上调(P<0.01),活化的Caspase-3表达显著下调(P<0.01)。结论半夏泻心汤可显著对抗应激性胃黏膜损伤,其抗损伤发生的机制之一可能是通过上调胃黏膜中Bcl-2 m RNA表达,下调活化的凋亡执行因子Caspase-3的表达,从而抑制胃黏膜上皮细胞的过度凋亡,发挥胃黏膜抗应激性损伤的作用。
文摘目的检测30周糖尿病大鼠胃排空及胃黏膜细胞凋亡的情况。方法取SPF级SD大鼠,应用链脲佐菌素(S treptozotoc in,STZ)建立糖尿病大鼠模型,持续30周后,应用酚红实验和光密度的方法检测胃排空,采用T une l法检测胃黏膜的细胞凋亡。结果30周糖尿病大鼠胃排空异常,中药组与模型组比较有所改善;胃黏膜细胞凋亡严重的是模型组,中药组与正常组无显著差异。结论实验30周糖尿病大鼠胃排空异常,胃黏膜有不同程度的细胞凋亡,模型组细胞凋亡程度明显,中药组与正常组无显著差异表明中药对胃黏膜的保护作用。
基金the Clinical Key Programs of Ministry of Public Health(No.20012130)
文摘Objective：To explore the effect of bile salt and bile acid on cultured eternalized human gastric mucosa epithelium GES-1 cells. Methods：Cultured eternalized human gastric mucosa epithelium GES-1 cells were treated with media containing 6 different kinds of bile salts and 3 different kinds of bile acids and their mixture with different concentrations： GCDC（glycochenodeoxychoμte）, GDC （glycodeoxychoμte）, GC（glycochoμte）, TCDC（taurochenodeoxychoμte）, TDC（taurodeoxychoμte）, TC （taurochoμte）, LCA （lithocholicacid）, CA（cholic acid）, DCA（deoxycholic acid）（50 μ mol/L,250 μ mol/L,500 μ mol/L,1000 μ mol/L）, DY（mixture of bile salts） and DS（mixture of bile acids）（250 μ mol/L,500 μ mol/L,1000 μ mol/L,1500 μ mol/L, 2000 μ mol/L）, in comparison with the control group（in normal media without bile salts and bile acids）. Cell proliferation was assessed by MTT（3-[4,5-Dimethylthiaolyl]-2,5- diphenyl-tetrazolium bromide） assay for 72 hours with different concentrations and the apoptotic cells were assayed by flow cytometry （FCM） with Annex V-FITC conjugated with propidium iodide（PI） staining for 24 hours with different concentrations（1500,2000 μt mol/L）. Results：There was no significant difference in morphology and cell proliferation in GC group after 24-72 h. Low concentration（50 μ mol/L） of GCDC, GDC, TCDC, TDC and TC accelerated gastric epithelial cell growth in a dosage-time dependent manner. At middle concentration （250-500 μ mol/L）, it showed positive effect after 24-48 h, while negative effect after 72 h. At high concentration（1000 μ mol/L）, it accelerated gastric epithelial cell growth after 24h and show consistent inhibition even leading to necrosis after 48-72 h. LCA and CA showed a positive effect on the concentration of 50 μ mol/L after 24-72 h, while 250-1000 μ mol/L showed a trend towards apoptosis after 24-72 h. At 50-500 μmol/L, DCA showed proliferation after 24 h and apoptosis after 48-72 h, but showed n
