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Alpha-1 Asthma Overlap Syndrome: a Clinical Overview
Manuel Izquierdo1, Himanshu Rawal2, Michael Armstrong3
1Department of Internal Medicine, Section On Pulmonary, Critical Care, Immunologic, and Asthma Medicine, Wake Forest Baptist Hospital, 1 Medical Center Blvd, Winston-Salem, NC, 27157, USA. mizquier@wakehealth.edu.
Alpha-1 antitrypsin deficiency (AATD) and asthma share overlapping symptoms, complicating diagnosis. Understanding this AATD-asthma overlap syndrome is crucial for effective management and treatment strategies.
Area of Science:
- Pulmonary Medicine
- Genetics
- Immunology
Background:
- Alpha-1 antitrypsin deficiency (AATD) is a common genetic disorder often underdiagnosed.
- Pulmonary symptoms like cough, dyspnea, and wheezing are common in both AATD and asthma.
- Significant symptom overlap complicates the differentiation between AATD and asthma.
Purpose of the Study:
- To review the pathophysiology, clinical manifestations, and treatment of AATD and asthma.
- To explore the potential overlap syndrome between AATD and asthma.
- To discuss the diagnostic challenges and management strategies for this overlap.
Main Methods:
- Literature review of recent studies on AATD and asthma.
- Analysis of the pathophysiological mechanisms linking AATD and asthma.
- Synthesis of clinical presentations and treatment options.
Main Results:
- A hypothesized association between asthma and AATD exists due to protease-antiprotease imbalance.
- This imbalance may lead to a pro-inflammatory state contributing to airway disease.
- An overlap syndrome, AATD-asthma, is increasingly recognized in clinical practice.
Conclusions:
- The AATD-asthma overlap syndrome presents unique diagnostic and therapeutic challenges.
- Further research is needed to elucidate the precise mechanisms and optimize management.
- Early recognition and targeted treatment are essential for improving patient outcomes.
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