Endothelial activation and dysfunction in COVID-19: from basic mechanisms to potential therapeutic approaches

Area of Science:

• Vascular Biology
• Infectious Diseases
• Pathophysiology

Background:

• The COVID-19 pandemic, caused by SARS-CoV-2, has led to millions of infections and deaths globally.
• Respiratory failure is a primary cause of mortality in severe COVID-19 cases.
• Endothelial cells, expressing angiotensin-converting enzyme 2, play key roles in inflammation and coagulation.

Purpose of the Study:

• To review the cellular and molecular mechanisms of endothelial activation and dysfunction in COVID-19 pathogenesis.
• To highlight the key mediators involved in COVID-19-associated endothelial dysfunction.
• To discuss potential therapeutic implications targeting endothelial pathways.

Main Methods:

• Literature review of existing studies on COVID-19 and endothelial cell function.
• Analysis of proposed cellular and molecular pathways.
• Synthesis of evidence on mediators and therapeutic targets.

Main Results:

• Endothelial activation and dysfunction are implicated in COVID-19 pathogenesis.
• Mechanisms include altered vessel barrier integrity, pro-coagulative states, endothelial inflammation, and leukocyte infiltration.
• Angiotensin-converting enzyme 2 expression in endothelial cells is central to these processes.

Conclusions:

• Endothelial dysfunction is a critical factor in severe COVID-19.
• Understanding these mechanisms offers potential therapeutic strategies.
• Targeting endothelial pathways may mitigate COVID-19 severity and complications.