GUT: 患有非酒精性脂肪肝疾病的瘦子与非瘦患者长期的预后的差别

2021-02-06 MedSci原创 MedSci原创

谁说只有肥胖的人才会得脂肪肝,非酒精性脂肪肝患者,是瘦子。脂肪肝,顾名思义,就是指各种原因引起的肝细胞内脂肪堆积。

      谁说只有肥胖的人才会得脂肪肝?——至少有10%以上的非酒精性脂肪肝患者,是瘦子。脂肪肝,顾名思义,就是指各种原因引起的肝细胞内脂肪堆积过多的病变。看到这儿,许多人会想,既然要脂肪堆积,是不是意味着脂肪肝只会在肥胖的人群中才有啊,正常体重甚至偏瘦的人应该就不会和它有什么瓜葛了吧?

 

 

      酒精性脂肪肝是由于长期大量饮酒导致的肝脏疾病,通常酒精性脂肪肝的发病和长期的饮酒有着必然的联系,和患者是否体重超标没有明显的关系。酒精导致脂肪肝的原因很复杂,其中最主要的原因是大量的酒精会直接损伤肝脏细胞。实际上,我们饮用的酒精90%是在肝脏内代谢,长期大量的摄入酒精能使肝内脂肪酸代谢发生障碍,形成脂肪堆积、变性,最终导致脂肪肝的形成。

 

 

 

      本项研究旨在对非酒精性脂肪肝疾病(NAFLD)在瘦弱人群中的完整表型表达进行表征,探究患有NAFLD的白种人中瘦子患者的患病率,特征和长期预后。

 

 

      本研究队列纳入了来自四个国家(意大利,英国,西班牙和澳大利亚)的1339名经活检证实的NAFLD受试者,分为瘦和非瘦组(体重指数(BMI)≥25 kg/m2被定义为非瘦患者)。随访期间记录通过病例数据库获得,通过对数秩检验进行比较,并通过调整后进行统计分析。

 

 

 

      结果显示瘦患者占所有患者的14.4%,主要来自意大利(89%)。他们的组织学表型较轻(瘦与非瘦:非酒精性脂肪性肝炎54.1%vs 71.2%p <0.001;晚期纤维化10.1%vs 25.2%p <0.001),糖尿病患病率较低(9.2%vs 31.4%,p <0.001),但PNPLA3 I148M变异的患病率无显着差异(p = 0.57)。在94个月的中位随访期间中,有4.7%的瘦患者和7.7%的非瘦患者报告了肝脏相关事件(p=0.37)。与非瘦型NAFLD相比,未观察到生存率差异(p=0.069)。

 

 

 

      结论患有NAFLD的瘦子患者可能会发展为晚期肝病,发展代谢合并症并经历血管疾病(CVD)以及与肝有关的死亡率,而与肥胖和PNPLA3基因型的纵向进展无关。NAFLD可能会影响肥胖者和瘦者的病情发展。瘦弱的人主要是男性,诊断时年龄较小,在某些地理区域更普遍。

 

 

原始出处: 

Ramy Younes. Et al. Caucasian lean subjects with non-alcoholic fatty liver disease share long-term prognosis of non-lean: time for reappraisal of BMI-driven approach? GUT.2021.

 

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    2021-02-06 liyu7822

    为了文章也是拼了

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