The Correlation between Bronchostenosis and Changes in the Levels of Interferon-γ and Transforming Growth Factor-β during the Treatment in patients with Endobronchial Tuberculosis
Background : Pulmonary tuberculosis is frequently accompanied with complications such as bronchiectasis, cavities, fibrosis and a deterioration of the lung function. However, there is little information available on the pathogenesis of these complications in pulmonary tuberculosis. Among the many factors involving in tissue remodeling, transforming growth factor-β1 (TGF-β1) is a potent stimulus of the extracellular matrix fomation and a mediator of potential relevance for airway wall remodeling. Therefore, this study examined the relationship between the radiological changes and the TGF-β1 level in patients with pulmonary tuberculosis. Methods : Serum and bronchoalveolar lavage fluid (BALF) were collected from total of 35 patients before treating them for active pulmonary tuberculosis, and the TGF-β1 levels were measured using an enzyme-linked immunosorbent assay (ELISA). The BALF levels were recalculated as the epithelial lining fluid (ELF) levels using the albumin method. pulmonary function test (PFT) and high resolution computed tomography (HRCT) were performed before and after treatment. Results : There was a strong correlation between the serum TGF-β1 level and the presence of cavities (r=0.404, p=0.006), even though the BAL TGF-β1 level showed a weak correlation with complications. In addition, there was no correlation between the TGF-β1 levels before treatment and the changes in the PFT and HRCT during treatment. Conclusion : There is a correlation between the serum TGF-β1 level and cavity formation in pulmonary tuberculosis before treatment. However, further study will be needed to confirm this.
Background : Pulmonary tuberculosis is frequently accompanied with complications such as bronchiectasis, cavities, fibrosis and a deterioration of the lung function. However, there is little information available on the pathogenesis of these complications in pulmonary tuberculosis. Among the many factors involving in tissue remodeling, transforming growth factor-β1 (TGF-β1) is a potent stimulus of the extracellular matrix fomation and a mediator of potential relevance for airway wall remodeling. Therefore, this study examined the relationship between the radiological changes and the TGF-β1 level in patients with pulmonary tuberculosis. Methods : Serum and bronchoalveolar lavage fluid (BALF) were collected from total of 35 patients before treating them for active pulmonary tuberculosis, and the TGF-β1 levels were measured using an enzyme-linked immunosorbent assay (ELISA). The BALF levels were recalculated as the epithelial lining fluid (ELF) levels using the albumin method. pulmonary function test (PFT) and high resolution computed tomography (HRCT) were performed before and after treatment. Results : There was a strong correlation between the serum TGF-β1 level and the presence of cavities (r=0.404, p=0.006), even though the BAL TGF-β1 level showed a weak correlation with complications. In addition, there was no correlation between the TGF-β1 levels before treatment and the changes in the PFT and HRCT during treatment. Conclusion : There is a correlation between the serum TGF-β1 level and cavity formation in pulmonary tuberculosis before treatment. However, further study will be needed to confirm this.
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