Abstract
Aim:
To evaluate the effect of inhaled formoterol-budesonide on airway remodeling in adult patients with moderate asthma.
Methods:
Thirty asthmatic patients and thirty control subjects were enrolled. Asthmatic subjects used inhaled Symbicort 4.5/160 μg twice daily for one year. The effect of formoterol-budesonide on airway remodeling was assessed with comparing high-resolution computer tomography (HRCT) images of asthmatic patients and controls, as well as expression levels of cytokines and growth factors, inflammatory cell count in induced sputum, and airway hyper-responsiveness.
Results:
The differences in age and gender between the two groups were not significant. However, differences in FVC %pred, FEV1 %pred, and PC20 between the two groups were significant. After treatment with formoterol-budesonide, the asthma patients' symptoms were relieved, and their lung function was improved. The WT and WA% of HRCT images in patients with asthma was increased, whereas treatment with formoterol-budesonide caused these values to decrease. The expression of MMP-9, TIMP-1, and TGF-β1 in induced sputum samples increased in patients with asthma and decreased dramatically after treatment with formoterol-budesonide. The WT and WA% are correlated with the expression levels of cytokines and growth factors, inflammatory cell count in induced sputum, and airway hyper-responsiveness, while these same values are correlated negatively with FEV1/FVC and FEV1%.
Conclusion:
Formoterol-budesonide might interfere in chronic inflammation and airway remodeling in asthmatic patients. HRCT can be used to effectively evaluate airway remodeling in asthmatic patients.
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Acknowledgements
This study was supported by a grant from Clinical Medicine Research Special Fund from Chinese Medical Association (No 08020750153).
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Wang, K., Liu, Ct., Wu, Yh. et al. Effects of formoterol-budesonide on airway remodeling in patients with moderate asthma. Acta Pharmacol Sin 32, 126–132 (2011). https://doi.org/10.1038/aps.2010.170
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DOI: https://doi.org/10.1038/aps.2010.170
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