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Transforming growth factor beta-1 level in pleural effusion.
Berrin Bagci Ceyhan1, Emel Demiralp, Zuha L Karakurt
1Department of Pulmonary Medicine, Marmara University, School of Medicine, Istanbul, Turkey. berrinn.ceyhan@superonline.com
Respirology (Carlton, Vic.)
|August 13, 2003
Summary
Transforming growth factor-beta1 (TGF-beta1) is higher in exudative pleural effusions than transudative ones. However, TGF-beta1 levels do not help distinguish between different types of exudative pleural effusions.
Area of Science:
- Immunology
- Pulmonology
- Biochemistry
Background:
- Transforming growth factor-beta1 (TGF-beta1) is a key immunomodulator.
- The diagnostic utility of TGF-beta1 in pleural effusion has not been thoroughly examined.
Purpose of the Study:
- To investigate the diagnostic role of TGF-beta1 in differentiating various types of pleural effusions.
- To compare TGF-beta1 concentrations in malignant, tuberculous, empyema/parapneumonic, and transudative pleural effusions.
Main Methods:
- A prospective study included 45 patients with pleural effusion.
- TGF-beta1 levels were measured using ELISA in pleural fluid and serum samples.
- Patients were categorized into malignant, tuberculous, empyema/parapneumonic, and transudative groups.
Main Results:
- TGF-beta1 levels were significantly higher in empyema/parapneumonic effusions compared to transudative effusions.
- No significant differences in TGF-beta1 levels were observed among malignant, tuberculous, and empyema/parapneumonic effusions.
- Pleural fluid TGF-beta1 did not correlate with cell counts, and serum TGF-beta1 levels mirrored pleural fluid levels in malignant and tuberculous effusions.
Conclusions:
- TGF-beta1 concentrations are elevated in exudative pleural effusions compared to transudative effusions.
- TGF-beta1 is not a reliable biomarker for differentiating between various types of exudative pleural effusions.