1. Severe Acute Respiratory Syndrome Coronavirus 2 Vasculopathy in a Syrian Golden Hamster Model
- Author
-
Ball, Erin E, Weiss, Christopher M, Liu, Hongwei, Jackson, Kenneth, Keel, M Kevin, Miller, Christopher J, Van Rompay, Koen KA, Coffey, Lark L, and Pesavento, Patricia A
- Subjects
Biomedical and Clinical Sciences ,Infectious Diseases ,Lung ,Rare Diseases ,Emerging Infectious Diseases ,Biodefense ,Vaccine Related ,Prevention ,Pneumonia ,2.1 Biological and endogenous factors ,Aetiology ,Cardiovascular ,Good Health and Well Being ,Cricetinae ,Animals ,Humans ,Mesocricetus ,SARS-CoV-2 ,COVID-19 ,Vascular Diseases ,Disease Models ,Animal ,Medical and Health Sciences ,Pathology ,Biomedical and clinical sciences ,Health sciences - Abstract
Clinical evidence of vascular dysfunction and hypercoagulability as well as pulmonary vascular damage and microthrombosis are frequently reported in severe cases of human coronavirus disease 2019 (COVID-19). Syrian golden hamsters recapitulate histopathologic pulmonary vascular lesions reported in patients with COVID-19. Herein, special staining techniques and transmission electron microscopy further define vascular pathologies in a Syrian golden hamster model of human COVID-19. The results show that regions of active pulmonary inflammation in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection are characterized by ultrastructural evidence of endothelial damage with platelet marginalization and both perivascular and subendothelial macrophage infiltration. SARS-CoV-2 antigen/RNA was not detectable within affected blood vessels. Taken together, these findings suggest that the prominent microscopic vascular lesions in SARS-CoV-2-inoculated hamsters likely occur due to endothelial damage followed by platelet and macrophage infiltration.
- Published
- 2023