TNF-α system and lung function impairment in obesity
1Endocrinology Department, CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain. alecube@vhebron.net
Cytokine
|February 8, 2011
Summary
Soluble TNF-alpha receptor 1 (sTNF-R1) levels correlate with reduced lung function in obese women, indicating potential inflammation
Area of Science:
- Pulmonary Medicine
- Immunology
- Obesity Research
Background:
- Systemic inflammation and abnormal adipose tissue activity may impact pulmonary function.
- Soluble TNF-alpha receptors (sTNF-R1, sTNF-R2) are key inflammatory markers.
Purpose of the Study:
- To investigate the relationship between circulating sTNF-R1 and sTNF-R2 levels and respiratory function in obese individuals.
Main Methods:
- Prospective study of 31 non-diabetic, non-smoking, morbidly obese women.
- Pulmonary function tests (spirometry, lung volumes, polygraphy, blood gases) were performed.
- ELISA was used to measure sTNF-R1, sTNF-R2, IL-6, and adiponectin levels.
Main Results:
- sTNF-R1 positively correlated with BMI and PaCO2, and negatively with FEV1, FEF(25-75), and FVC.
- sTNF-R1 independently predicted reduced FEV1 and FVC.
- No significant correlation was found between sTNF-R2 and respiratory parameters.
Conclusions:
- Elevated sTNF-R1 levels are associated with impaired lung volumes and airflow limitation in morbidly obese patients.
- sTNF-R1 may serve as an early indicator of respiratory compromise in obesity.
- Further research on anti-TNF-alpha agents for pulmonary function in obesity is warranted.
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