Pathological changes in the lungs and lymphatic organs of 12 COVID-19 autopsy cases

• 来源期刊: 国家科学评论（英文版）
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: RESEARCH ARTICLES
• 页码范围: 1868-1878
• 页数: 11页
• 语种: 英文
• DOI: 10.1093/nsr/nwaa247

摘要

Systematic autopsy and comprehensive pathological analyses of COVID-19 decedents should provide insights into the disease characteristics and facilitate the development of novel therapeutics.In this study,we report the autopsy findings from the lungs and lymphatic organs of 12 COVID-19 decedents-findings that evaluated histopathological changes,immune cell signature and inflammatory factor expression in the lungs,spleen and lymph nodes.Here we show that the major pulmonary alterations included diffuse alveolar damage,interstitial fibrosis and exudative inflammation featured with extensive serous and fibrin exudates,macrophage infiltration and abundant production of inflammatory factors(IL-6,IP-10,TNFa and IL-1β).The spleen and hilar lymph nodes contained lesions with tissue structure disruption and immune cell dysregulation,including lymphopenia and macrophage accumulation.These findings provide pathological evidence that links injuries of the lungs and lymphatic organs with the fatal systematic respiratory and immune malfunction in critically ill COVID-19 patients.