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对基因素2B的IgA自身抗体可以区分酒精和代谢功能障碍相关的脂肪性肝病

Julia Grottenthaler¹, Beate Preuss², Amelie Frank²

¹Department of Gastroenterology, Gastrointestinal Oncology, Hepatology, Infectiology, and Geriatrics, University Hospital Tuebingen, Germany.

Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver

|August 23, 2025

概括

新的研究表明IgA抗体对基因素2B (抗H2B-IgA) 是酒精相关肝病 (ALD) 的有前途的生物标志物. 这些抗体有助于区分ALD与代谢功能障碍相关的脂肪性肝病 (MASLD).

科学领域:

肝病学
免疫学
生物标志物发现

背景情况:

诊断与酒精相关的肝病 (ALD) 并将其与代谢功能障碍相关的脂肪性肝病 (MASLD) 区分是具有挑战性的,通常依赖于患者病史.
虽然在ALD中存在各种自身抗体,但没有一个具有高度特异性.
初步研究表明,IgA型对2B基因素的抗体 (抗H2B-IgA) 与ALD有很强的关联.

研究的目的:

研究抗H2B-IgA抗体作为ALD的新生物标志物.
评估抗H2B-IgA抗体与肝硬化之间的相关性.
评估抗H2B-IgA抗体在区分ALD与其他慢性肝病,特别是MASLD中的有用性.

主要方法:

一项追溯性研究,涉及985名患有各种慢性肝病 (ALD,有毒性肝病,MASLD,密码性肝硬化,自身免疫性肝病) 的患者.
使用内部ELISA测试对抗H2B-IgA抗体进行了测试.
分析了实验室和组织学数据与抗体存在的相关性.

主要成果:

与大多数其他群体相比,抗H2B-IgA抗体的患病率和反应性明显高,除了密码性肝硬化.
晚期肝病的抗体更常见,但与报告的酒精摄入量没有相关性.
抗H2B-IgA抗体的存在与ALD的风险增加了29倍.

结论:

血清中的抗H2B-IgA抗体强烈表明酒精性或肝毒性过程.
这些抗体可以帮助区分ALD和MASLD.
抗H2B-IgA抗体是潜在的ALD新型诊断生物标志物.

关键词:

与酒精有关的肝病基因组2B 抗体A自身抗体与代谢功能障碍相关的脂肪性肝病

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