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Bronchomotor tone imbalance evokes airway hyperresponsiveness
Joseph A Jude1, Reynold A Panettieri1
1Rutgers Institute for Translational Medicine and Science, Child Health Institute of New Jersey, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA.
Expert Review of Respiratory Medicine
|October 22, 2024
Summary
Understanding airway smooth muscle (ASM) cell dysfunction in asthma and COPD is key to treating airway hyperresponsiveness (AHR). Identifying molecular mechanisms that disrupt ASM homeostasis offers new therapeutic targets for these obstructive airway diseases.
Area of Science:
- Pulmonary Medicine
- Cellular Biology
- Pharmacology
Background:
- Obstructive airway diseases, including asthma and COPD, impose a significant healthcare burden.
- Airway hyperresponsiveness (AHR) is a hallmark of these conditions and a primary therapeutic target.
- Airway smooth muscle (ASM) cells are central to maintaining bronchomotor tone and AHR development.
Purpose of the Study:
- To elucidate the molecular mechanisms underlying bronchomotor tone imbalance in ASM cells.
- To identify novel therapeutic strategies for AHR in asthma and COPD.
- To review intrinsic and extrinsic factors affecting ASM cell function.
Main Methods:
- Literature review and analysis of published laboratory findings.
- Examination of factors amplifying excitation-contraction coupling and ASM shortening.
- Assessment of factors diminishing ASM relaxation.
Main Results:
- Intrinsic and extrinsic factors, such as disease phenotype, toxicants, and inflammatory mediators, disrupt ASM homeostasis.
- These factors amplify ASM contraction and/or diminish relaxation, leading to altered bronchomotor tone.
- Understanding these mechanisms is crucial for developing targeted therapies.
Conclusions:
- Bronchomotor tone imbalance in ASM cells is modulated by intrinsic and extrinsic factors.
- Innovative experimental approaches are essential for identifying novel therapeutic targets for AHR.
- Targeting ASM mechanisms offers a platform for developing new treatments for asthma and COPD.
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