NATURE:我国研究人员发现,新冠病毒变异并未显著影响临床结果

2020-05-21 MedSci原创 MedSci原创

疾病严重程度的决定因素似乎主要来自于宿主因素,如年龄、淋巴细胞减少症及其相关的细胞因子风暴,而病毒遗传变异对结果没有明显影响。

2019年12月,由新型冠状病毒SARS-CoV-2引起的2019年冠状病毒病(COVID-19)在中国湖北省武汉市出现,并很快在全球范围内蔓延。

在这种持续的大流行中,公共卫生的关注和对有效的治疗措施强烈需求,需要我们深入了解其流行病学、传播性和发病机制。

在此,我国研究人员分析了上海地区326例COVID-19确诊病例的临床、分子和免疫学资料。

从112个优质样本中收集到的SARS-CoV-2的基因组序列与全球流感数据共享倡议(GISAID)中的序列比对,显示出稳定的演化过程,并提示在武汉市爆发的早期阶段,有两个主要的暴露史不同的病毒序列存在。

尽管如此,它们表现出相似的毒力和临床结果。淋巴细胞减少,尤其是入院时的CD4+和CD8+ T细胞数量的减少,是疾病进展的预测因素。

在治疗期间观察到重症或危重症患者的IL-6和IL-8水平较高,并与淋巴细胞计数下降相关。

疾病严重程度的决定因素似乎主要来自于宿主因素,如年龄、淋巴细胞减少症及其相关的细胞因子风暴,而病毒遗传变异对结果没有明显影响。

 

原始出处:

Xiaonan Zhang et al. Viral and host factors related to the clinical outcome of COVID-19, NATURE (2020). 

 

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    2020-08-26 liye789132251
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    2020-05-21 公卫新人

    新冠肺炎,疫情何时才能消失

    0

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