SIRT1与酒精相关性脂肪肝及其与运动关系研究进展

Research Progress on SIRT1 and Alcoholic Fatty Liver Disease (AFLD) and the Relationship Between SIRT1 and Exercise

  • 摘要: 酒精相关性脂肪肝(AFLD)是世界范围内最常见的肝脏疾病之一, 可发展为酒精相关性炎症(肝炎)、酒精相关性纤维化、最终导致终末期肝损伤。尽管AFLD致病因素单一, 形成原因却非常复杂, 目前尚未阐释清楚。研究发现在急性或慢性乙醇暴露下, 完全或者部分通过抑制沉默信息调节因子(silent mating type information regulation 2 homolog 1, SIRT1)来实现对包括腺苷酸活化激酶(AMP-activated kinase, AMPK)、脂素-1(Lipin-1)、甾醇调节元件蛋白-1(Sterol调节元件结合蛋白-1, SREBP-1)、过氧化物酶体增殖物激活受体β(PPARβ)辅激活物-1α(PGC-1α)、叉头转录因子XO1和脂联素(Adiponectin)在内的多种细胞因子的干扰, 导致人和啮齿动物的肝脏脂肪变性。运动训练能够诱导机体运动系统和非运动系统组织中SIRT1表达, 被激活的SIRT1通过多种途径改善AFLD中被乙醇及其代谢物影响产生的诸如肝脏脂肪酸氧化速率下降、脂肪合成速率升高、炎症发生等症状。在总结SIRT1与上述细胞因子关系的基础上, 结合运动与SIRT1的研究现状, 展望SIRT1在运动与AFLD关系中的研究前景。

     

    Abstract: Alcoholic fatty liver disease, one of the most common liver diseases in the world, can develop into alcohol-related inflammation (hepatitis), alcohol-related fibrosis and eventually end-stage liver injury.Although the pathogenic factor of AFLD is single, the causes of the disease are complex, which are yet to be determined.It's found that acute or chronic ethanol exposure can cause hepatic steatosis in humans and rodents through a variety of cytokines interference by inhibition SIRT1, including AMPK, Lipin-1, SREBP-1, peroxisome proliferator β(PPARβ), auxiliary activator-1α(PGC-1α), forkhead transcription factor XO1 and adiponectin etc.Exercise training can induce the expression of SIRT1 in the body's motor system and non-motor system tissues.Activated SIRT1 can improve the decline of fatty acid oxidation rate, increase the fat synthesis rate and inflammation in AFLD under the influence of ethanol and its metabolites through a variety of ways.Based on the previous studies of the relationship between SIRT1 and the above-mentioned cytokines, combing with the current research of exercise and SIRT1, the research prospects of SIRT1 in the relationship between exercise and AFLD are prospected.

     

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