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Abstract
Background: Although some patients with obstructive lung disease (OLD) have features of both asthma and chronic obstructive pulmonary disease (COPD), the term "asthma-COPD overlap syndrome (ACOS)" was coined only relatively recently. However, there are gaps in our knowledge of the clinical features, pathogenesis, prognosis, and management of ACOS patients.
Objectives: To review the literature on ACOS to determine the extent to which the clinical features, pathologic mechanisms, clinical outcomes, and current therapeutic approaches for ACOS differ from those in patients with asthma alone or COPD alone. Methods: PUBMED searches were conducted to review the demographic and clinical features, comorbidities, lung imaging characteristics, prognoses, pathologic mechanisms, and current therapeutic approaches for patients with ACOS versus asthma alone or COPD alone. Results: Criteria that are used to diagnose ACOS vary considerably. Overall, ACOS patients have higher symptom burdens (especially dyspnea), poorer quality of life scores, and more frequent and severe exacerbations than patients with COPD alone or asthma alone. However, there are conflicting reports on the prognosis of ACOS patients. Imaging studies indicate that ACOS is predominantly an airway disease. ACOS has been linked to the presence of Th2-type immune responses in COPD airways and Th1-type immune responses in asthmatic airways. Current therapeutic options for ACOS patients include inhaled corticosteroids and bronchodilators. However, randomized clinical trials have not yet been conducted to optimize the management of ACOS patients. Conclusion: ACOS patients have clinical features that are now well defined, but additional studies are needed to provide novel insights into ACOS pathogenesis, and to optimize the treatment of these patients.Keywords: Asthma, chronic obstructive pulmonary disease, overlap, clinical features.
Current Pharmaceutical Design
Title:Asthma COPD Overlap Syndrome: An Approach to A Real -World Endotype in Obstructive Lung Disease?
Volume: 22 Issue: 41
Author(s): Maria Laucho-Contreras, Maria Montes de Oca and Caroline A. Owen
Affiliation:
Keywords: Asthma, chronic obstructive pulmonary disease, overlap, clinical features.
Abstract: Background: Although some patients with obstructive lung disease (OLD) have features of both asthma and chronic obstructive pulmonary disease (COPD), the term "asthma-COPD overlap syndrome (ACOS)" was coined only relatively recently. However, there are gaps in our knowledge of the clinical features, pathogenesis, prognosis, and management of ACOS patients.
Objectives: To review the literature on ACOS to determine the extent to which the clinical features, pathologic mechanisms, clinical outcomes, and current therapeutic approaches for ACOS differ from those in patients with asthma alone or COPD alone. Methods: PUBMED searches were conducted to review the demographic and clinical features, comorbidities, lung imaging characteristics, prognoses, pathologic mechanisms, and current therapeutic approaches for patients with ACOS versus asthma alone or COPD alone. Results: Criteria that are used to diagnose ACOS vary considerably. Overall, ACOS patients have higher symptom burdens (especially dyspnea), poorer quality of life scores, and more frequent and severe exacerbations than patients with COPD alone or asthma alone. However, there are conflicting reports on the prognosis of ACOS patients. Imaging studies indicate that ACOS is predominantly an airway disease. ACOS has been linked to the presence of Th2-type immune responses in COPD airways and Th1-type immune responses in asthmatic airways. Current therapeutic options for ACOS patients include inhaled corticosteroids and bronchodilators. However, randomized clinical trials have not yet been conducted to optimize the management of ACOS patients. Conclusion: ACOS patients have clinical features that are now well defined, but additional studies are needed to provide novel insights into ACOS pathogenesis, and to optimize the treatment of these patients.Export Options
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Cite this article as:
Laucho-Contreras Maria, Oca Montes de Maria and Owen A. Caroline, Asthma COPD Overlap Syndrome: An Approach to A Real -World Endotype in Obstructive Lung Disease?, Current Pharmaceutical Design 2016; 22 (41) . https://dx.doi.org/10.2174/1381612822666160906162441
DOI https://dx.doi.org/10.2174/1381612822666160906162441 |
Print ISSN 1381-6128 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4286 |
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