News Release

氨基酸缺乏与新型病毒性疾病有关

Peer-Reviewed Publication

American Association for the Advancement of Science (AAAS)

Amino Acid Deficiency Connected to New Viral Disease (1 of 1)

video: A short discussion about the issues of zoonosis problem. This material relates to a paper that appeared in the Sep. 19, 2018, issue of Science Translational Medicine, published by AAAS. The paper, by X.-K. Li at Beijing Institute of Microbiology and Epidemiology in Beijing, China; and colleagues was titled, "Arginine deficiency is involved in thrombocytopenia and immunosuppression in severe fever with thrombocytopenia syndrome." view more 

Credit: X.-K. Li <i>et al., Science Translational Medicine</i> (2018)

Xiao-Kun Li和同事在他们对感染SFTS(严重发热伴血小板减少综合征)病毒的住院患者的研究中显示,病人体内的精氨酸(一种氨基酸)水平低下与血小板计数低及免疫抑制有关。他们得出结论,在感染早期,体内精氨酸水平低下的患者更可能死亡。这些发现为SFTS的基础发病机制提供了重要信息;SFTS是一种新发现的病毒性出血热;它是在2009年首次在中国大陆被发现的,自那以后,韩国、日本及美国都有病例报告。被感染者中约有10%会发展成致命性疾病,但该病还没有治疗或预防方法,其部分原因是对该病了解甚少。为了更多地了解这种疾病,Li等人对46名SFTS患者的血液进行了分析,旨在寻找与该病有关的代谢过程中的异常迹象。他们发现,一条会降低精氨酸水平的代谢通路似乎是SFTS感染的关键部分,而精氨酸水平低下与血小板计数的异常低下(即该病名称中的血小板减少症)及T细胞功能受损有关。在测试给病人补充精氨酸效果的小型随机化临床试验中,研究人员发现,得到补充的患者体内会生成更多的血小板,他们身体中清除病毒的速度也快于未补充精氨酸的患者。作者说,进一步的研究应确认精氨酸是否能成为治疗SFTS及类似病毒性疾病的合适标靶。

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