Objective: To compare the therapeutic effect of different animal bile powders on lipid metabolism disorders induced by high-fat diet in rats, and analyze the bioactive components of each animal bile powder. Methods: S...Objective: To compare the therapeutic effect of different animal bile powders on lipid metabolism disorders induced by high-fat diet in rats, and analyze the bioactive components of each animal bile powder. Methods: Sixty Sprague-Dawley rats were randomly divided into 6 groups(n=10): normal diet control group, high-fat diet model group, high-fat diet groups orally treated with bear, pig, cow and chicken bile powders, respectively. Serum biochemical markers from the abdominal aorta in each group were analyzed. Changes in the body weight and liver weight were recorded. Pathohistological changes in the livers were examined. High performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry was used to determine the composition of bioactive components in each animal bile powder. Results: Treatment with different types of animal bile powders had different inhibitory effects on high-fat diet-induced increase of body weight and/or liver weight in rats, most notably in bear and pig bile powders(P<0.05). High-fat diet induced lipid metabolism disorder in rats, which could be reversed by treatment with all kinds of bile powders. Bear bile and chicken bile showed the most potent therapeutic effect against lipid metabolism disorder. Cow and bear bile effectively alleviated high-fat diet induced liver enlargement and discoloration, hepatocyte swelling, infiltration of inflammatory cells and formation of lipid vacuoles. Bioactive component analysis revealed that there were significant differences in the relative content of taurocholic acid, taurodeoxycholic acid and ursodeoxycholic acid among different types of animal bile. Interestingly, a unique component with molecular weight of 496.2738 Da, whose function has not yet been reported, was identified only in bear bile powder. Conclusions: Different animal bile powders had varying therapeutic effect against lipid metabolism disorders induced by high-fat diet, and bear bile powder demonstrated the most effective benefits. Bioactive compositions were different in different types of animal bile with a novel compound identified only in bear bile powder.展开更多
目的:探讨葛根芩连汤对高脂饮食诱导追赶生长(CUG)大鼠糖脂代谢的影响及机制。方法:60只SD大鼠随机分为正常组(18只)和追赶生长模型组(42只),采用限制饮食后开放高脂饮食的方式建立追赶生长大鼠模型,观察大鼠一般状况、体质量的变化,分...目的:探讨葛根芩连汤对高脂饮食诱导追赶生长(CUG)大鼠糖脂代谢的影响及机制。方法:60只SD大鼠随机分为正常组(18只)和追赶生长模型组(42只),采用限制饮食后开放高脂饮食的方式建立追赶生长大鼠模型,观察大鼠一般状况、体质量的变化,分别于第4周、第8周末各组抽取6只大鼠检测空腹血糖(FBG)、空腹血清胰岛素(FINS)、甘油三脂(TG)、总胆固醇(TC)水平,并计算胰岛素抵抗指数(HOMA-IR),评估CUG大鼠胰岛素敏感性及体成分的改变。造模成功后,分别给予葛根芩连汤和吡格列酮干预6周,实验分为6组:正常组、模型组、葛根芩连汤低、中、高剂量组(2.5、5、10 g·kg^(-1))、吡格列酮组(3.125 mg·kg^(-1)),正常组和模型组给予等量生理盐水灌胃。实验过程中,记录大鼠体质量的变化,于实验结束时检测FBG、FINS、TG、TC水平,计算HOMA-IR指数;苏木素-伊红(HE)染色观察大鼠骨骼肌组织病理学改变;严格按照试剂盒所示方法检测骨骼肌活性氧(ROS)、丙二醛(MDA)水平;实时荧光定量聚合酶链式反应(Real-time PCR)检测骨骼肌沉默信息调节因子1(SIRT1)、过氧化物酶体增殖物激活受体γ共激活剂1α(PGC1α)、核因子E_2相关因子1(Nrf1)m RNA的表达;免疫组化法及蛋白免疫印迹法(Western blot)检测骨骼肌SIRT1、PGC1α、Nrf1蛋白的表达。结果:与正常组比较,模型组大鼠FBG有所升高,FINS、HOMA-IR显著升高(P<0.01);血清TG、TC水平明显升高(P<0.05,P<0.01);大鼠骨骼肌组织肌纤维直径显著增加,肌细胞间的脂肪细胞明显增加;骨骼肌ROS、MDA水平显著升高(P<0.01);SIRT1、PGC1α、Nrf1 m RNA及蛋白表达明显下降(P<0.05,P<0.01)。与模型组比较,葛根芩连汤各剂量组及吡格列酮组大鼠的体质量、FINS、HOMA-IR、TG水平显著降低(P<0.05,P<0.01),以葛根芩连汤中、高剂量组和吡格列酮组变化最明显;骨骼肌肌间脂肪等间质成分明显减少,肌纤维直径变窄;骨骼肌ROS、MDA水平明显降低(P<0.05,P<0.01);SIRT1、PGC1α、Nrf1 m RNA及蛋白表达均有不同程度升高(P<0.05,P<0.01)。结论:葛根芩连汤可以改善CUG大鼠糖脂代谢紊乱,改善IR,其机制可能与调控SIRT1/PGC1α/Nrf1信号通路有关。展开更多
基金Supported by the Developmental Fund of Chen Keji Integrative Medicine (No.CKJ2013009)Project-Oriented Collaboration with Fujian Guizhentang Pharmaceutical Co.,Ltd.(No.701141002)。
文摘Objective: To compare the therapeutic effect of different animal bile powders on lipid metabolism disorders induced by high-fat diet in rats, and analyze the bioactive components of each animal bile powder. Methods: Sixty Sprague-Dawley rats were randomly divided into 6 groups(n=10): normal diet control group, high-fat diet model group, high-fat diet groups orally treated with bear, pig, cow and chicken bile powders, respectively. Serum biochemical markers from the abdominal aorta in each group were analyzed. Changes in the body weight and liver weight were recorded. Pathohistological changes in the livers were examined. High performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry was used to determine the composition of bioactive components in each animal bile powder. Results: Treatment with different types of animal bile powders had different inhibitory effects on high-fat diet-induced increase of body weight and/or liver weight in rats, most notably in bear and pig bile powders(P<0.05). High-fat diet induced lipid metabolism disorder in rats, which could be reversed by treatment with all kinds of bile powders. Bear bile and chicken bile showed the most potent therapeutic effect against lipid metabolism disorder. Cow and bear bile effectively alleviated high-fat diet induced liver enlargement and discoloration, hepatocyte swelling, infiltration of inflammatory cells and formation of lipid vacuoles. Bioactive component analysis revealed that there were significant differences in the relative content of taurocholic acid, taurodeoxycholic acid and ursodeoxycholic acid among different types of animal bile. Interestingly, a unique component with molecular weight of 496.2738 Da, whose function has not yet been reported, was identified only in bear bile powder. Conclusions: Different animal bile powders had varying therapeutic effect against lipid metabolism disorders induced by high-fat diet, and bear bile powder demonstrated the most effective benefits. Bioactive compositions were different in different types of animal bile with a novel compound identified only in bear bile powder.
文摘目的:探讨葛根芩连汤对高脂饮食诱导追赶生长(CUG)大鼠糖脂代谢的影响及机制。方法:60只SD大鼠随机分为正常组(18只)和追赶生长模型组(42只),采用限制饮食后开放高脂饮食的方式建立追赶生长大鼠模型,观察大鼠一般状况、体质量的变化,分别于第4周、第8周末各组抽取6只大鼠检测空腹血糖(FBG)、空腹血清胰岛素(FINS)、甘油三脂(TG)、总胆固醇(TC)水平,并计算胰岛素抵抗指数(HOMA-IR),评估CUG大鼠胰岛素敏感性及体成分的改变。造模成功后,分别给予葛根芩连汤和吡格列酮干预6周,实验分为6组:正常组、模型组、葛根芩连汤低、中、高剂量组(2.5、5、10 g·kg^(-1))、吡格列酮组(3.125 mg·kg^(-1)),正常组和模型组给予等量生理盐水灌胃。实验过程中,记录大鼠体质量的变化,于实验结束时检测FBG、FINS、TG、TC水平,计算HOMA-IR指数;苏木素-伊红(HE)染色观察大鼠骨骼肌组织病理学改变;严格按照试剂盒所示方法检测骨骼肌活性氧(ROS)、丙二醛(MDA)水平;实时荧光定量聚合酶链式反应(Real-time PCR)检测骨骼肌沉默信息调节因子1(SIRT1)、过氧化物酶体增殖物激活受体γ共激活剂1α(PGC1α)、核因子E_2相关因子1(Nrf1)m RNA的表达;免疫组化法及蛋白免疫印迹法(Western blot)检测骨骼肌SIRT1、PGC1α、Nrf1蛋白的表达。结果:与正常组比较,模型组大鼠FBG有所升高,FINS、HOMA-IR显著升高(P<0.01);血清TG、TC水平明显升高(P<0.05,P<0.01);大鼠骨骼肌组织肌纤维直径显著增加,肌细胞间的脂肪细胞明显增加;骨骼肌ROS、MDA水平显著升高(P<0.01);SIRT1、PGC1α、Nrf1 m RNA及蛋白表达明显下降(P<0.05,P<0.01)。与模型组比较,葛根芩连汤各剂量组及吡格列酮组大鼠的体质量、FINS、HOMA-IR、TG水平显著降低(P<0.05,P<0.01),以葛根芩连汤中、高剂量组和吡格列酮组变化最明显;骨骼肌肌间脂肪等间质成分明显减少,肌纤维直径变窄;骨骼肌ROS、MDA水平明显降低(P<0.05,P<0.01);SIRT1、PGC1α、Nrf1 m RNA及蛋白表达均有不同程度升高(P<0.05,P<0.01)。结论:葛根芩连汤可以改善CUG大鼠糖脂代谢紊乱,改善IR,其机制可能与调控SIRT1/PGC1α/Nrf1信号通路有关。
