The chemical constituents of fistular onion stalk obtained by supercritical CO2 extraction were separated and purified by silica gel and sephadex LH-20 gel column chromatography and the preparative TLC method and four...The chemical constituents of fistular onion stalk obtained by supercritical CO2 extraction were separated and purified by silica gel and sephadex LH-20 gel column chromatography and the preparative TLC method and four flavonoids were obtained. On the basis of the spectral data, they were structurally identified as （＋）-catechin, （-）-epieatechin, astragalin, and 3-O-β-D（2-O-β-D-glu- copyranosyl）-glucopyranosides of kaempferol.展开更多
[目的]观察葱白提取物对非酒精性脂肪肝(NAFLD)模型大鼠ATP合酶Fo亚基6(ATPase6)、ATP合酶Fo亚基8(ATPase8)表达的影响,并探讨其作用机制。[方法]将50只雄性SD大鼠随机分为正常组、模型组、葱白低剂量组、葱白中剂量组、葱白高剂量组,每...[目的]观察葱白提取物对非酒精性脂肪肝(NAFLD)模型大鼠ATP合酶Fo亚基6(ATPase6)、ATP合酶Fo亚基8(ATPase8)表达的影响,并探讨其作用机制。[方法]将50只雄性SD大鼠随机分为正常组、模型组、葱白低剂量组、葱白中剂量组、葱白高剂量组,每组10只。采用高脂饮食喂养复制NAFLD模型大鼠,造模10周后,给予葱白提取物连续干预4周后,测定血清中丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)和甘油三酯(TG)、胆固醇(TC)的含量;苏木精-伊红(HE)染色法观察肝脏组织结构变化;Real time PCR检测大鼠肝脏组织中ATPase6、ATPase8 mRNA的表达。[结果]与正常组比较,模型组出现明显肝脂肪变性,血清ALT、AST、TC、TG水平明显升高(P<0.05),ATPase6、ATPase8 mRNA的表达明显降低(P<0.05);相较于模型组,葱白低、中、高剂量组肝脂肪变性均不同程度减轻;血清ALT、AST、TC、TG水平均不同程度降低(P<0.05),ATPase6、ATPase8 m RNA表达不同程度升高(P<0.05)。与葱白低剂量组比较,葱白中、高剂量组肝脂肪变性减轻明显,ALT、AST、TC、TG水平明显降低(P<0.05),ATPase6、ATPase8 mRNA水平明显升高(P<0.05),中、高剂量葱白组之间差异无统计学意义。[结论]葱白提取物能够改善肝脂肪变性,可能与提高ATPase6、ATPase8的表达,增加肝线粒体ATP合成有关。展开更多
基金supported by a grant from a National Program of Science and Research of China (No. 2006BAI09B08-07)
文摘The chemical constituents of fistular onion stalk obtained by supercritical CO2 extraction were separated and purified by silica gel and sephadex LH-20 gel column chromatography and the preparative TLC method and four flavonoids were obtained. On the basis of the spectral data, they were structurally identified as （＋）-catechin, （-）-epieatechin, astragalin, and 3-O-β-D（2-O-β-D-glu- copyranosyl）-glucopyranosides of kaempferol.
文摘[目的]观察葱白提取物对非酒精性脂肪肝(NAFLD)模型大鼠ATP合酶Fo亚基6(ATPase6)、ATP合酶Fo亚基8(ATPase8)表达的影响,并探讨其作用机制。[方法]将50只雄性SD大鼠随机分为正常组、模型组、葱白低剂量组、葱白中剂量组、葱白高剂量组,每组10只。采用高脂饮食喂养复制NAFLD模型大鼠,造模10周后,给予葱白提取物连续干预4周后,测定血清中丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)和甘油三酯(TG)、胆固醇(TC)的含量;苏木精-伊红(HE)染色法观察肝脏组织结构变化;Real time PCR检测大鼠肝脏组织中ATPase6、ATPase8 mRNA的表达。[结果]与正常组比较,模型组出现明显肝脂肪变性,血清ALT、AST、TC、TG水平明显升高(P<0.05),ATPase6、ATPase8 mRNA的表达明显降低(P<0.05);相较于模型组,葱白低、中、高剂量组肝脂肪变性均不同程度减轻;血清ALT、AST、TC、TG水平均不同程度降低(P<0.05),ATPase6、ATPase8 m RNA表达不同程度升高(P<0.05)。与葱白低剂量组比较,葱白中、高剂量组肝脂肪变性减轻明显,ALT、AST、TC、TG水平明显降低(P<0.05),ATPase6、ATPase8 mRNA水平明显升高(P<0.05),中、高剂量葱白组之间差异无统计学意义。[结论]葱白提取物能够改善肝脂肪变性,可能与提高ATPase6、ATPase8的表达,增加肝线粒体ATP合成有关。
