Leptin and fat cells: how obesity may worsen lung infections like COVID-19 and flu
Official title: The role of adipocyte-drive inflammation and leptin pathway in pulmonary viral infections caused by SARS-CoV-2 and influenza A viruses
Funded at Louisiana State Univ A&m Col Baton Rouge · NIH-11382855 · Data updated 2026-11-12
A study explores how fat tissue and the leptin pathway might change the body's first lung defenses during respiratory infections in people who are obese or have diabetes.
Quick facts
| Grant type | NIH-funded research |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Louisiana State Univ A&m Col Baton Rouge NIH-funded |
| Lab location | 1 site (Baton Rouge, United States) |
| Project start | January 2, 2019 |
| Project end | June 30, 2029 |
| Funding year | 2026 |
| Award (this year) | $253,001 |
| NIH project number | 5P20GM130555-08 |
| Project ID | NIH-11382855 on NIH RePORTER |
Who could benefit from this research
✓Could help
Adults with obesity and/or type 2 diabetes who are at high risk for severe respiratory infections.
✕Less likely to help
People without obesity or diabetes may not experience direct benefits from this research.
What this research studies
This project looks at how dysfunctional fat cells and the leptin hormone affect lung immune responses during infections with influenza A and coronaviruses. It uses biological models to understand how obesity-related changes could make the lungs more vulnerable to viral damage. The researchers aim to identify signals from adipocytes that alter airway and alveolar defenses, potentially leading to worse outcomes. The goal is to uncover targets in the leptin pathway that could guide new therapies for at-risk patients.
Why it matters
Potential benefit: If successful, the findings could lead to new treatments that reduce lung injury in people with obesity and diabetes during viral infections.
How similar studies have gone: Previous work suggests metabolic factors influence lung immunity, but this project seeks specific links to adipocyte signaling and leptin.
Where this research is happening
-
Louisiana State Univ A&m Col Baton Rouge
Baton Rouge, United States Active
Researchers
- Principal investigator: Carossino, Mariano — Louisiana State Univ A&m Col Baton Rouge
- Study coordinator: Carossino, Mariano
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About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.