Related Experiment Videos
Tumor necrosis factor-alpha (TNF-alpha) in pleural fluids
1Department of Chest Diseases, Gazi University School of Medicine, Turkey.
Tubercle and Lung Disease : the Official Journal of the International Union Against Tuberculosis and Lung Disease
|August 1, 1995
Summary
Tumor necrosis factor-alpha (TNF-alpha) is elevated in the pleural fluid of patients with tuberculous pleuritis (TP). This suggests local production of TNF-alpha within the pleural cavity, playing a role in TP disease activity.
Area of Science:
- Immunology
- Pulmonology
- Infectious Diseases
Background:
- Tuberculous pleuritis (TP) is an inflammatory condition affecting the pleura.
- Tumor necrosis factor-alpha (TNF-alpha) is a pro-inflammatory cytokine implicated in various inflammatory diseases.
Purpose of the Study:
- To investigate the role and levels of TNF-alpha at the site of disease activity in tuberculous pleuritis.
- To compare TNF-alpha concentrations in pleural fluid and plasma across different pleural effusion types.
Main Methods:
- Radioimmunoassay (RIA) was used to measure TNF-alpha concentrations.
- Samples were collected from pleural fluid (PF) and plasma (P).
- Patients included those with TP (n=14), malignant effusions (n=18), and transudates (n=7).
Main Results:
- Mean plasma TNF-alpha levels did not differ significantly among the three groups.
- Mean pleural fluid TNF-alpha levels were significantly higher in the TP group compared to malignant effusions and transudates (P < 0.001).
- No significant difference in pleural fluid TNF-alpha was observed between malignant effusions and transudates.
Conclusions:
- Elevated TNF-alpha in pleural fluid suggests local synthesis within the pleural cavity in tuberculous pleuritis.
- TNF-alpha may play a significant role in the local inflammatory process of TP.
- This finding differentiates TP from other pleural effusion types based on local cytokine profiles.