【摘要】 酒精性脂肪肝(AFLD)是长期饮酒导致的肝脏疾病,长期的酒精摄入导致肝脏脂肪合成代谢增加和脂解作用减少,肝脏脂肪沉积增加,进而发生脂肪性肝炎、肝纤维化和肝硬化,其相关的病理机制尚未明确。聚腺苷二磷酸核糖聚合酶(PARP)是细胞内重要的DNA修复酶,主要参与细胞的基因转录、DNA修复、基因组的稳定和细胞的凋亡、坏死。PARP是细胞内烟酰胺腺嘌呤二核苷酸(NAD+)的消耗酶,PARP的活性改变对细胞内NAD+水平的调控发挥重要作用。长期的酒精摄入导致PARP蛋白活化,在AFLD的发生、发展中发挥重要作用。PARP蛋白的基因缺失或活性抑制,对改善长期饮酒导致的肝脏脂肪沉积、炎性反应、氧化应激和肝细胞的凋亡、坏死发挥重要作用,本文对PARP蛋白在AFLD中的研究进展进行综述。更多还原

【Abstract】 Alcoholic fatty liver disease(AFLD) caused by chronic drinking which is one of liver disease. Chronic alcohol consumption increased hepatic fat anabolism and decreased lipolysis which caused hepatic fat accumulation. Moreover, chronic alcohol exposure induced steatohepatitis, hepatic fibrosis and cirrhosis. But the pathological mechanism is not yet clear. Poly(ADP-ribose) polymerase(PARP) is a intracellular DNA repairase which participated in intracellular gene transcription, DNA repair, genome stability and cell apoptosis and necrosis. PARP is a consumer of intracellular nicotinamide adenine dinucleotide(NAD+). The activation of PARP regulated the intracellular NAD+level. Chronic alcohol consumption induced PARP activity which play an important role in the development of alcohol fatty liver disease. The inhibition of PARP or gene deletion of PARP in mice attenuated hepatic fat accumulation, inflammatory, oxidative stress and hepatic apotosis and necrosis by chronic alcohol exposure. This review focus on the advanced research of PARP in alcoholic fatty liver disease.更多还原