Objective To explore Effects of marine collagen peptides （MCPs） on markers of metablic nuclear receptors, i.e peroxisome proliferator-activated receptor （PPARs）, liver X receptor （LXRs） and farnesoid X receptor ...Objective To explore Effects of marine collagen peptides （MCPs） on markers of metablic nuclear receptors, i.e peroxisome proliferator-activated receptor （PPARs）, liver X receptor （LXRs） and farnesoid X receptor （FXRs） in type 2 diabetic patients with/without hypertension. Method Study population consisted of 200 type 2 diabetic patients with/without hypertension and 50 healthy subjects, all of whom were randomly assigned to MCPs-treated diabetics （n=50）, placebo-treated diabetics （n=50）, MCPs-treated diabetics with hypertension （n=50）, placebo-treated diabetics with hypertension （n=50）, and healthy controls （n=50）. MCPs or placebo （water-soluble starch） were given daily before breakfast and bedtime over three months. Levels of free fatty acid, cytochrome P450, leptin, resistin, adiponectin, bradykinin, NO, and Prostacyclin were determined before intervention, and 1.5 months, and 3 months after intervention. Hypoglycemia and the endpoint events during the study were recorded and compared among the study groups. Result At the end of the study period, MCPs-treated patients showed marked improvement compared with patients receiving placebo. The protection exerted by MCPs seemed more profound in diabetics than in diabetics with hypertension. In particular, after MCPs intervention, levels of free fatty acid, hs-CRP, resistin, Prostacyclin decreased significantly in diabetics and tended to decrease in diabetic and hypertensive patients whereas levels of cytochrome P450, leptin, NO tended to decrease in diabetics with/without hypertension. Meanwhile, levels of adiponectin and bradykinin rose markedly in diabetics following MCPs administration. Conclusion MCPs could offer protection against diabetes and hypertension by affecting levels of molecules involved in diabetic and hypertensive pathogenesis. Regulation on metabolic nuclear receptors by MCPs may be the possible underlying mechanism for its observed effects in the study. Further study into its action may shed light on developm展开更多
目的:观察隔药饼灸对动脉粥样硬化(artherosc lerosis,AS)兔主动脉内皮细胞过氧化酶体增殖物激活型受体γ(Peroxisom e proliferator-activated receptor,γPPARγ)的影响,探讨隔药饼灸延迟AS形成的作用机理。方法:将75只新西兰大耳白兔...目的:观察隔药饼灸对动脉粥样硬化(artherosc lerosis,AS)兔主动脉内皮细胞过氧化酶体增殖物激活型受体γ(Peroxisom e proliferator-activated receptor,γPPARγ)的影响,探讨隔药饼灸延迟AS形成的作用机理。方法:将75只新西兰大耳白兔,通过高脂饲料喂养及免疫损伤法建立兔AS模型。然后随机分为5组,每组15只,即:空白组(空白对照组);模型组(AS模型组);直接灸组(AS模型+艾炷直接灸);隔药饼灸组(AS模型+隔药饼灸);西药组(AS模型+阿托伐他汀)。采用逆转录聚合酶链反应(RT-PCR)检测兔主动脉内皮细胞PPARγ蛋白表达。结果:模型组主动脉内皮细胞PPARγ的蛋白表达明显低于空白组、西药组、隔药饼灸和直接灸组,且有显著性差异(P<0.01,P<0.05);西药组与直接灸组比较有显著性差异(P<0.05)。结论:西药组、隔药饼灸和直接灸组均能通过激活动脉粥样硬化兔主动脉内皮细胞PPARγ的蛋白表达,起到延迟动脉粥样硬化斑块形成的作用,西药组与隔药饼灸组作用相当,而西药组的作用要强于直接灸组。展开更多
基金grants from the National Key Technology R&D Program (No. 2006BAD27B01)Chinese Center for Disease Control and Prevention Dalone Foundation of Dietary Nutrition (No. DIC-200710)a grant from Shenzhen Bureau of Science Technology & Information (No. 200802002)
文摘Objective To explore Effects of marine collagen peptides （MCPs） on markers of metablic nuclear receptors, i.e peroxisome proliferator-activated receptor （PPARs）, liver X receptor （LXRs） and farnesoid X receptor （FXRs） in type 2 diabetic patients with/without hypertension. Method Study population consisted of 200 type 2 diabetic patients with/without hypertension and 50 healthy subjects, all of whom were randomly assigned to MCPs-treated diabetics （n=50）, placebo-treated diabetics （n=50）, MCPs-treated diabetics with hypertension （n=50）, placebo-treated diabetics with hypertension （n=50）, and healthy controls （n=50）. MCPs or placebo （water-soluble starch） were given daily before breakfast and bedtime over three months. Levels of free fatty acid, cytochrome P450, leptin, resistin, adiponectin, bradykinin, NO, and Prostacyclin were determined before intervention, and 1.5 months, and 3 months after intervention. Hypoglycemia and the endpoint events during the study were recorded and compared among the study groups. Result At the end of the study period, MCPs-treated patients showed marked improvement compared with patients receiving placebo. The protection exerted by MCPs seemed more profound in diabetics than in diabetics with hypertension. In particular, after MCPs intervention, levels of free fatty acid, hs-CRP, resistin, Prostacyclin decreased significantly in diabetics and tended to decrease in diabetic and hypertensive patients whereas levels of cytochrome P450, leptin, NO tended to decrease in diabetics with/without hypertension. Meanwhile, levels of adiponectin and bradykinin rose markedly in diabetics following MCPs administration. Conclusion MCPs could offer protection against diabetes and hypertension by affecting levels of molecules involved in diabetic and hypertensive pathogenesis. Regulation on metabolic nuclear receptors by MCPs may be the possible underlying mechanism for its observed effects in the study. Further study into its action may shed light on developm
文摘目的:观察隔药饼灸对动脉粥样硬化(artherosc lerosis,AS)兔主动脉内皮细胞过氧化酶体增殖物激活型受体γ(Peroxisom e proliferator-activated receptor,γPPARγ)的影响,探讨隔药饼灸延迟AS形成的作用机理。方法:将75只新西兰大耳白兔,通过高脂饲料喂养及免疫损伤法建立兔AS模型。然后随机分为5组,每组15只,即:空白组(空白对照组);模型组(AS模型组);直接灸组(AS模型+艾炷直接灸);隔药饼灸组(AS模型+隔药饼灸);西药组(AS模型+阿托伐他汀)。采用逆转录聚合酶链反应(RT-PCR)检测兔主动脉内皮细胞PPARγ蛋白表达。结果:模型组主动脉内皮细胞PPARγ的蛋白表达明显低于空白组、西药组、隔药饼灸和直接灸组,且有显著性差异(P<0.01,P<0.05);西药组与直接灸组比较有显著性差异(P<0.05)。结论:西药组、隔药饼灸和直接灸组均能通过激活动脉粥样硬化兔主动脉内皮细胞PPARγ的蛋白表达,起到延迟动脉粥样硬化斑块形成的作用,西药组与隔药饼灸组作用相当,而西药组的作用要强于直接灸组。
