Pulmonary vascular system: A vulnerable target for COVID-19

Area of Science:

• Pulmonary vascular pathophysiology
• COVID-19 research
• Vascular endotheliopathy

Background:

• COVID-19 pandemic presents challenges to healthcare.
• Pulmonary vasculature is a potential target due to ACE2 receptor expression.
• Clinical imaging shows pulmonary vascular thickening in COVID-19 patients.

Purpose of the Study:

• To review the pulmonary vascular pathophysiology in COVID-19.
• To discuss clinical presentations related to pulmonary vasculature.
• To provide insights for developing targeted therapeutic strategies.

Main Methods:

• Literature review of existing studies on COVID-19 and pulmonary vasculature.
• Analysis of reported clinical imaging findings.
• Synthesis of information on SARS-CoV-2 interaction with pulmonary endothelium.

Main Results:

• COVID-19 is associated with vascular endothelial damage, dysfunction, inflammation, coagulopathy, and microthrombosis.
• Mechanisms include direct viral infection, renin-angiotensin-aldosterone system imbalance, and immune dysregulation.
• Degradation of endothelial glycocalyx increases susceptibility to SARS-CoV-2 infection.

Conclusions:

• COVID-19 induces significant pulmonary vascular endotheliopathy.
• Understanding these mechanisms is crucial for clinical management.
• Targeting the pulmonary vasculature may offer novel therapeutic avenues.