Pulmonary stromal expansion and intra-alveolar coagulation are primary causes of COVID-19 death

Autor: Laszlo Szekely, Bela Bozoky, Matyas Bendek, Masih Ostad, Pablo Lavignasse, Lars Haag, Jieyu Wu, Xu Jing, Soham Gupta, Elisa Saccon, Anders Sönnerborg, Yihai Cao, Mikael Björnstedt, Attila Szakos
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Heliyon, Vol 7, Iss 5, Pp e07134- (2021)
Druh dokumentu: article
ISSN: 2405-8440
DOI: 10.1016/j.heliyon.2021.e07134
Popis: Most COVID-19 victims are old and die from unrelated causes. Here we present twelve complete autopsies, including two rapid autopsies of young patients where the cause of death was COVID-19 ARDS. The main virus induced pathology was in the lung parenchyma and not in the airways. Most coagulation events occurred in the intra-alveolar and not in the intra-vascular space and the few thrombi were mainly composed of aggregated thrombocytes. The dominant inflammatory response was the massive accumulation of CD163 + macrophages and the disappearance of T killer, NK and B-cells. The virus was replicating in the pneumocytes and macrophages but not in bronchial epithelium, endothelium, pericytes or stromal cells. The lung consolidations were produced by a massive regenerative response, stromal and epithelial proliferation and neovascularization. We suggest that thrombocyte aggregation inhibition, angiogenesis inhibition and general proliferation inhibition may have a roll in the treatment of advanced COVID-19 ARDS.
Databáze: Directory of Open Access Journals