Objective: We aimed to observe the effects of loganin(Log) on serum glycolipid levels and probe the mechanisms focusing on intestinal flora and AMP-activated protein kinase(AMPK) signaling in obese mice.Methods: A hig...Objective: We aimed to observe the effects of loganin(Log) on serum glycolipid levels and probe the mechanisms focusing on intestinal flora and AMP-activated protein kinase(AMPK) signaling in obese mice.Methods: A high-fat diet was given for 12 consecutive weeks to generate the obesity model in institute of cancer research(ICR) mice. Body weight was measured weekly and fasting blood glucose(FBG) was determined every 2 weeks. Both the oral glucose tolerance test and the intraperitoneal insulin tolerance test were performed. The serum levels of total cholesterol(TC), triglyceride, high-density lipoproteincholesterol, low-density lipoprotein-cholesterol(LDL-C), and free fatty acids(FFA) were measured. The expression of key proteins in the AMPK signaling pathway in skeletal muscle tissue was detected by immunoblotting, and gut microbiota were characterized using 16S rDNA sequencing.Results: Log significantly decreased the body weight and the FBG in obese mice(P <.05), and it could restore FBG to normal levels. The total cholesterol, LDL-C, and FFA levels were significantly reduced by Log compared with the obese controls(TC: P =.0020;LDL-C: P =.0233;FFA: P =.0127), and the glucose tolerance of animals was significantly improved(P =.0477). The western blot results showed that Log could upregulate the protein expression of Adenosine 5‘-monophosphate(AMP)-activated protein kinase(AMPKa), Sirtuin 1(SIRT1), and peroxisome proliferator-activated receptor-gamma coactivator-1 alpha(PGC1a) in skeletal muscle tissue of obese mice. 16S rDNA sequencing indicated that Log reduced the diversity of the gut flora in feces and altered the floral composition of obese mice.Conclusions: Log was effective in reducing body weight and improving glucolipid metabolism in obese mice, probably through activating AMPK signaling and regulating intestinal microbial diversity.展开更多
目的建立高效液相色谱法(high performance liquid chromatography,HPLC)测定金匮肾气丸中马钱苷、京尼平苷酸、23-乙酰泽泻醇B和β-蜕皮甾酮的含量。方法将金匮肾气丸样品研细、甲醇超声提取后,用Capcell Pak UG C_(18)色谱柱分离,柱温...目的建立高效液相色谱法(high performance liquid chromatography,HPLC)测定金匮肾气丸中马钱苷、京尼平苷酸、23-乙酰泽泻醇B和β-蜕皮甾酮的含量。方法将金匮肾气丸样品研细、甲醇超声提取后,用Capcell Pak UG C_(18)色谱柱分离,柱温为28℃,京尼平苷酸、β-蜕皮甾酮、马钱苷和23-乙酰泽泻醇B检测波长分别设定为254、250、240、254 nm,进样体积为10μL,流速为1.0 mL·min^(-1),以乙腈为流动相A、3 mL·L^(-1)磷酸溶液为流动相B,梯度洗脱,外标法定量检测。结果京尼平苷酸、β-蜕皮甾酮、马钱苷和23-乙酰泽泻醇B质量浓度分别在0.0495~4.95、0.0981~9.81、0.0197~1.97、0.0983~9.83μg·mL^(-1)范围内具有良好的线性关系;重复性RSD值(n=6)分别为1.62%、1.31%、1.76%、1.24%;平均加样回收率分别为100.05%、98.33%、99.97%、99.42%。结论该方法具有前处理简单、分析时间短、检测结果准确等优点,适用于金匮肾气丸的质量控制。展开更多
基金supported by the Qi Huang Scholars Program of the State Administration of Traditional Chinese Medicine(10400633210005)the National Natural Science Foundation of China (NSFC82174329&NSFC81503540)+1 种基金the Key Drug Development Program (2012ZX09103201-005)the Key Research Project of Beijing University of Chinese Medicine (2020-JYB-ZDGG-029)。
文摘Objective: We aimed to observe the effects of loganin(Log) on serum glycolipid levels and probe the mechanisms focusing on intestinal flora and AMP-activated protein kinase(AMPK) signaling in obese mice.Methods: A high-fat diet was given for 12 consecutive weeks to generate the obesity model in institute of cancer research(ICR) mice. Body weight was measured weekly and fasting blood glucose(FBG) was determined every 2 weeks. Both the oral glucose tolerance test and the intraperitoneal insulin tolerance test were performed. The serum levels of total cholesterol(TC), triglyceride, high-density lipoproteincholesterol, low-density lipoprotein-cholesterol(LDL-C), and free fatty acids(FFA) were measured. The expression of key proteins in the AMPK signaling pathway in skeletal muscle tissue was detected by immunoblotting, and gut microbiota were characterized using 16S rDNA sequencing.Results: Log significantly decreased the body weight and the FBG in obese mice(P <.05), and it could restore FBG to normal levels. The total cholesterol, LDL-C, and FFA levels were significantly reduced by Log compared with the obese controls(TC: P =.0020;LDL-C: P =.0233;FFA: P =.0127), and the glucose tolerance of animals was significantly improved(P =.0477). The western blot results showed that Log could upregulate the protein expression of Adenosine 5‘-monophosphate(AMP)-activated protein kinase(AMPKa), Sirtuin 1(SIRT1), and peroxisome proliferator-activated receptor-gamma coactivator-1 alpha(PGC1a) in skeletal muscle tissue of obese mice. 16S rDNA sequencing indicated that Log reduced the diversity of the gut flora in feces and altered the floral composition of obese mice.Conclusions: Log was effective in reducing body weight and improving glucolipid metabolism in obese mice, probably through activating AMPK signaling and regulating intestinal microbial diversity.
文摘目的建立高效液相色谱法(high performance liquid chromatography,HPLC)测定金匮肾气丸中马钱苷、京尼平苷酸、23-乙酰泽泻醇B和β-蜕皮甾酮的含量。方法将金匮肾气丸样品研细、甲醇超声提取后,用Capcell Pak UG C_(18)色谱柱分离,柱温为28℃,京尼平苷酸、β-蜕皮甾酮、马钱苷和23-乙酰泽泻醇B检测波长分别设定为254、250、240、254 nm,进样体积为10μL,流速为1.0 mL·min^(-1),以乙腈为流动相A、3 mL·L^(-1)磷酸溶液为流动相B,梯度洗脱,外标法定量检测。结果京尼平苷酸、β-蜕皮甾酮、马钱苷和23-乙酰泽泻醇B质量浓度分别在0.0495~4.95、0.0981~9.81、0.0197~1.97、0.0983~9.83μg·mL^(-1)范围内具有良好的线性关系;重复性RSD值(n=6)分别为1.62%、1.31%、1.76%、1.24%;平均加样回收率分别为100.05%、98.33%、99.97%、99.42%。结论该方法具有前处理简单、分析时间短、检测结果准确等优点,适用于金匮肾气丸的质量控制。
