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Table of Contents
Vol. 75, No. 1, 2008
Issue release date: January 2008
Section title: Interventional Pulmonology
Respiration 2008;75:73–78
(DOI:10.1159/000110744)

Diagnostic Accuracy of Cytokine Levels (TNF-α, IL-2 and IFN-γ) in Bronchoalveolar Lavage Fluid of Smear-Negative Pulmonary Tuberculosis Patients

Küpeli E.a · Karnak D.a · Beder S.a · Kayacan O.a · Tutkak H.b
Departments of aChest Diseases and bImmunology, Ankara University School of Medicine, Ankara, Turkey

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Article / Publication Details

First-Page Preview
Abstract of Interventional Pulmonology

Received: June 21, 2007
Accepted: August 28, 2007
Published online: November 01, 2007
Issue release date: January 2008

Number of Print Pages: 6
Number of Figures: 1
Number of Tables: 2

ISSN: 0025-7931 (Print)
eISSN: 1423-0356 (Online)

For additional information: http://www.karger.com/RES

Abstract

Background: The determination of cytokine concentrations in serum and bronchoalveolar lavage fluid (BALF) may contribute to the diagnosis of tuberculosis (TB) since cytokines have been ascribed an important role in TB pathogenesis. Objective: To assess the diagnostic accuracy of TNF-α, IFN-γ and IL-2 levels in serum and BALF of smear-negative pulmonary TB patients. Method: BALF was obtained from the affected lobe in patients with smear-negative TB or other pulmonary diseases (OPD), and from the right middle lobe in healthy controls. ELISA and a nephelometric method were used to detect cytokine and albumin levels. Results: TNF-α levels in BALF were significantly elevated in the TB group (n = 15) compared with the OPD patients (n = 40) and controls (n = 17; p < 0.001). Although these three cytokines correlated well with each other in BALF (p < 0.0001, and r ≧ 0.7, respectively), BALF IL-2 and IFN-γ levels were not significantly different among the groups (p > 0.05). BALF TNF-α or IFN-γ levels were significantly higher in patients with cavitary disease (n = 11) versus those without (n = 61; p < 0.05). However, no significant difference was found between cavitary (n = 7) and non-cavitary TB in cytokine levels (p > 0.05). Neither gender nor smoking status showed any statistical differences in cytokines in the groups (p > 0.05). Sensitivity and specificity of BALF TNF-α were found to be 73 and 76%, respectively. The positive and negative predictive values for BALF TNF-α were 44 and 91%, respectively. Conclusion: In cases of smear-negative TB, BALF TNF-α can be a useful tool to identify healthy subjects rather than smear-negative TB patients.

© 2007 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Interventional Pulmonology

Received: June 21, 2007
Accepted: August 28, 2007
Published online: November 01, 2007
Issue release date: January 2008

Number of Print Pages: 6
Number of Figures: 1
Number of Tables: 2

ISSN: 0025-7931 (Print)
eISSN: 1423-0356 (Online)

For additional information: http://www.karger.com/RES


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