目的:探究不同强度一次性运动干预对大鼠睾周白色脂肪中FNDC5和UCP-1表达量的影响。方法:30只SD大鼠随机分为对照组(C组,n=6)和运动组(E组,n=24)。E组大鼠随机分为中等强度运动组(EM组,n=12,15 m/min)和高强度间歇运动组(EH组,n=12,35 m...目的:探究不同强度一次性运动干预对大鼠睾周白色脂肪中FNDC5和UCP-1表达量的影响。方法:30只SD大鼠随机分为对照组(C组,n=6)和运动组(E组,n=24)。E组大鼠随机分为中等强度运动组(EM组,n=12,15 m/min)和高强度间歇运动组(EH组,n=12,35 m/min,6 min间歇5 min,重复3次),分别在一次性运动后即刻和6 h后取大鼠睾周白色脂肪,利用RT-q PCR法检测睾周白色脂肪组织中细胞外跨膜受体Ⅲ型纤连蛋白域蛋白5(FNDC5)和解偶联蛋白1(UCP-1)m RNA表达水平,Western Blot法检测睾周白色脂肪组织中FNDC5和UCP-1蛋白含量。结果:(1)与C组相比,EH组运动后即刻FNDC5 m RNA表达水平显著升高(P<0.01)。(2)与C组相比,运动组大鼠睾周白色脂肪组织中UCP-1m RNA水平在运动后即刻显著降低(P<0.05);与运动后即刻相比较,运动后6 h显著升高(P<0.05)。(3)与C组相比,EM和EH组FNDC5蛋白含量均有上升趋势,其中EM组显著升高(P<0.05)。(4)与C组相比,EM组和EH组UCP-1蛋白含量均有上升趋势,其中EH组运动后即刻出现显著升高(P<0.05)。结论:(1)一次性运动能够提高大鼠睾周白色脂肪FNDC5和UCP-1蛋白表达水平,促进白色脂肪棕色化,增加脂肪组织产热;(2)一次性运动后FNDC5 m RNA和UCP-1 m RNA的变化具有时效性,其中UCP-1 m RNA在运动后6小时出现显著升高,而FNDC5 m RNA在高强度间歇运动后即刻变化最明显。展开更多
Uncoupling protein 1(UCP1)is a proton transporter/channel residing on the inner mitochondrial membrane and is involved in cellular heat production.Using immunohistochemistry,we investigated the expression of UCP1 and ...Uncoupling protein 1(UCP1)is a proton transporter/channel residing on the inner mitochondrial membrane and is involved in cellular heat production.Using immunohistochemistry,we investigated the expression of UCP1 and UCP3 in a series of 98 patients with non-small cell lung cancer(NSCLC)treated with surgery.Expression patterns were correlated with histopathological variables,prognosis,and the expression of enzymes/proteins related to cell metabolism.Bronchial epithelium did not express UCP1 or UCP3,while alveolar cells strongly expressed UCP1.In tumors,strong expression of UCP1 and UCP3 was recorded in43/98(43.8%)and 27/98(27.6%)cases,respectively.UCP1 was significantly associated with squamous cell histology(P=0.05),whilst UCP3 was more frequently overexpressed in large cell carcinomas(P=0.08),and was inversely related to necrosis(P=0.009).In linear regression analysis,UCP1 was directly related to markers of glycolysis[hexokinase(HXKII)and phosphofructokinase(PFK1)]and anaerobic glucose metabolism[pyruvate dehydrogenase kinase(PDK1)and lactate dehydrogenase(LDH5)].UCP3 was directly linked with a glucose transporter(GLUT2),monocarboxylate transporter(MCT2),glycolysis markers(PFK1 and aldolase),and with the phosphorylation of pyruvate dehydrogenase(p PDH).Kaplan-Meier survival analysis showed that UCP3 was significantly related to poor prognosis in squamous cell carcinomas(P=0.04).UCP1 and UCP3 are overexpressed in a large subgroup of non-small cell lung tumors and their expression coincides with increased glucose absorption,intensified glycolysis,and anaerobic glucose usage.Whether UCPs are targets for therapeutic interventions in lung cancer is a hypothesis that demands further investigation.展开更多
文摘目的:探究不同强度一次性运动干预对大鼠睾周白色脂肪中FNDC5和UCP-1表达量的影响。方法:30只SD大鼠随机分为对照组(C组,n=6)和运动组(E组,n=24)。E组大鼠随机分为中等强度运动组(EM组,n=12,15 m/min)和高强度间歇运动组(EH组,n=12,35 m/min,6 min间歇5 min,重复3次),分别在一次性运动后即刻和6 h后取大鼠睾周白色脂肪,利用RT-q PCR法检测睾周白色脂肪组织中细胞外跨膜受体Ⅲ型纤连蛋白域蛋白5(FNDC5)和解偶联蛋白1(UCP-1)m RNA表达水平,Western Blot法检测睾周白色脂肪组织中FNDC5和UCP-1蛋白含量。结果:(1)与C组相比,EH组运动后即刻FNDC5 m RNA表达水平显著升高(P<0.01)。(2)与C组相比,运动组大鼠睾周白色脂肪组织中UCP-1m RNA水平在运动后即刻显著降低(P<0.05);与运动后即刻相比较,运动后6 h显著升高(P<0.05)。(3)与C组相比,EM和EH组FNDC5蛋白含量均有上升趋势,其中EM组显著升高(P<0.05)。(4)与C组相比,EM组和EH组UCP-1蛋白含量均有上升趋势,其中EH组运动后即刻出现显著升高(P<0.05)。结论:(1)一次性运动能够提高大鼠睾周白色脂肪FNDC5和UCP-1蛋白表达水平,促进白色脂肪棕色化,增加脂肪组织产热;(2)一次性运动后FNDC5 m RNA和UCP-1 m RNA的变化具有时效性,其中UCP-1 m RNA在运动后6小时出现显著升高,而FNDC5 m RNA在高强度间歇运动后即刻变化最明显。
文摘Uncoupling protein 1(UCP1)is a proton transporter/channel residing on the inner mitochondrial membrane and is involved in cellular heat production.Using immunohistochemistry,we investigated the expression of UCP1 and UCP3 in a series of 98 patients with non-small cell lung cancer(NSCLC)treated with surgery.Expression patterns were correlated with histopathological variables,prognosis,and the expression of enzymes/proteins related to cell metabolism.Bronchial epithelium did not express UCP1 or UCP3,while alveolar cells strongly expressed UCP1.In tumors,strong expression of UCP1 and UCP3 was recorded in43/98(43.8%)and 27/98(27.6%)cases,respectively.UCP1 was significantly associated with squamous cell histology(P=0.05),whilst UCP3 was more frequently overexpressed in large cell carcinomas(P=0.08),and was inversely related to necrosis(P=0.009).In linear regression analysis,UCP1 was directly related to markers of glycolysis[hexokinase(HXKII)and phosphofructokinase(PFK1)]and anaerobic glucose metabolism[pyruvate dehydrogenase kinase(PDK1)and lactate dehydrogenase(LDH5)].UCP3 was directly linked with a glucose transporter(GLUT2),monocarboxylate transporter(MCT2),glycolysis markers(PFK1 and aldolase),and with the phosphorylation of pyruvate dehydrogenase(p PDH).Kaplan-Meier survival analysis showed that UCP3 was significantly related to poor prognosis in squamous cell carcinomas(P=0.04).UCP1 and UCP3 are overexpressed in a large subgroup of non-small cell lung tumors and their expression coincides with increased glucose absorption,intensified glycolysis,and anaerobic glucose usage.Whether UCPs are targets for therapeutic interventions in lung cancer is a hypothesis that demands further investigation.
