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Mechanistic Insights Into Long Covid: Viral Persistence, Immune Dysregulation, and Multi-Organ Dysfunction
Gautam Gupta1, Danilo Buonsenso2, John Wood3
1Sanford Burnham Prebys, La Jolla, California, USA.
Comprehensive Physiology
|June 6, 2025
Summary
Long Covid, a persistent post-viral syndrome, stems from SARS-CoV-2 infection causing immune dysregulation and inflammation. Understanding these mechanisms is key to developing effective treatments for long-term Covid symptoms.
Area of Science:
- Immunology
- Virology
- Pathophysiology
Background:
- Long Covid is a complex post-viral syndrome following SARS-CoV-2 infection.
- Symptoms affect multiple organ systems and resemble other post-viral illnesses like ME/CFS.
- Potential mechanisms include viral persistence, immune dysregulation, and systemic inflammation.
Purpose of the Study:
- To review current data on Long Covid pathogenesis.
- To explore therapeutic strategies for mitigating viral persistence, immune dysfunction, and metabolic disturbances.
- To understand the interactions driving long-term sequelae of SARS-CoV-2 infection.
Main Methods:
- Literature synthesis and review of current scientific data.
- Analysis of proposed mechanisms of Long Covid.
- Exploration of potential therapeutic interventions.
Main Results:
- SARS-CoV-2 may persist in tissues, evading immune clearance and causing chronic symptoms.
- Mechanisms involve immune dysregulation, cytokine imbalances, T-cell exhaustion, and systemic inflammation.
- Neuroinflammation, endothelial dysfunction, and impaired mitochondrial function contribute to cognitive and physical symptoms.
Conclusions:
- Understanding Long Covid pathogenesis is crucial for developing targeted interventions.
- Therapeutic strategies should address viral persistence, immune dysfunction, and metabolic disturbances.
- Improving patient outcomes requires a comprehensive approach to managing long-term SARS-CoV-2 sequelae.
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