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Pathophysiology of insulin resistance and steatosis in patients with chronic viral hepatitis 被引量:8
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作者 Metin Basaranoglu Gkcen Basaranoglu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第36期4055-4062,共8页
Chronic hepatitis due to any cause leads to cirrhosis and end-stage liver disease.A growing body of literature has also shown that fatty liver due to overweight or obesity is a leading cause of cirrhosis.Due to the ob... Chronic hepatitis due to any cause leads to cirrhosis and end-stage liver disease.A growing body of literature has also shown that fatty liver due to overweight or obesity is a leading cause of cirrhosis.Due to the obesity epidemic,fatty liver is now a significant problem in clinical practice.Steatosis has an impact on the acceleration of liver damage in patients with chronic hepatitis due to other causes.An association between hepatitis C virus (HCV) infection,steatosis and the onset of insulin resistance has been reported.Insulin resistance is one of the leading factors for severe fibrosis in chronic HCV infections.Moreover,hyperinsulinemia has a deleterious effect on the management of chronic HCV.Response to therapy is increased by decreasing insulin resistance by weight loss or the use of thiazolidenediones or metformin.The underlying mechanisms of this complex interaction are not fully understood.A direct cytopathic effect of HCV has been suggested.The genomic structure of HCV (suggesting that some viral sequences are involved in the intracellular accumulation of triglycerides),lipid metabolism,the molecular links between the HCV core protein and lipid droplets (the core protein of HCV and its transcriptional regulatory function which induce a triglyceride accumulation in hepatocytes) and increased neolipogenesis and inhibited fatty acid degradation in mitochondria have been investigated. 展开更多
关键词 ADIPOCYTOKINES Fatty acids Hepatitis B virus Hepatitis C virus Inducible nitric oxide synthase insulin resistance signal transduction and activator of transcription-3 STEATOSIS Sterol regulatory elementbinding protein-1c Suppressors of cytokine signaling Tumor necrosis factor-α
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抵抗素对内皮细胞胰岛素信号通路的影响
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作者 李志臻 李芳萍 +2 位作者 叶建红 严励 傅祖植 《新医学》 2009年第12期778-780,797,共4页
目的:研究抵抗素对人脐静脉内皮细胞(human umbilical vein endothelial cells,HUVECs)胰岛素信号通路的影响。方法:原代培养HUVECs,以不同水平人抵抗素(0~100μg/L)培养24h。用免疫印迹法检测其对经胰岛素作用的内皮细胞的... 目的:研究抵抗素对人脐静脉内皮细胞(human umbilical vein endothelial cells,HUVECs)胰岛素信号通路的影响。方法:原代培养HUVECs,以不同水平人抵抗素(0~100μg/L)培养24h。用免疫印迹法检测其对经胰岛素作用的内皮细胞的磷酸化蛋白激酶B(phospho-protein kinase B,p-PKB)及磷酸化内皮型一氧化氮合酶(phospho-endothelial nitric oxide synthase,p-eNOS)水平,并对检测结果进行分析。结果:与无加抵抗素的对照组比较,抵抗素干预HUVECs 24h后,胰岛素刺激状态下的p-PKB和p-eNOS水平均明显降低(P〈0.05~0.01);基础状态下,抵抗素作用下HUVECs的p-PKB水平无明显改变(均为P〉0.05),而p-eNOS水平明显降低(P〈0.05):结论:抵抗素对内皮细胞的胰岛素信号转导和内皮型一氧化氮合酶磷酸化可起抑制作用,这可能是抵抗素诱导内皮细胞功能异常的机制之一。 展开更多
关键词 抵抗素 内皮细胞 胰岛素 信号转导 一氧化氮合酶
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