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Translating Basic Research Into Clinical Practice |

Extracellular ATP in Obstructive Airway Diseases

Amir Pelleg, Ph.D.; Edward S. Schulman, MD; Peter J. Barnes, DM, Master FCCP
Author and Funding Information

Conflict of interest: All authors claim no conflict of interest

1Drexel University, College of Medicine, Department of Medicine, Philadelphia Pennsylvania, USA

2Airway Disease Section, National Heart and Lung Institute, Imperial College, London, UK

Correspondence: Amir Pelleg, Ph.D., FACC, FAHA Drexel University, College of Medicine Department of Medicine, 245 N 25th Street; NCB Mail stop #470 Philadelphia, PA 19102, USA.


Copyright 2016, . All Rights Reserved.


Chest. 2016. doi:10.1016/j.chest.2016.06.045
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Abstract

In recent years numerous studies have generated data supporting the hypothesis that extracellular adenosine 5’-triphosphate (ATP) plays a major role in obstructive airway diseases. Studies in animal models and human subjects have shown that increased amounts of extracellular ATP are found in the lungs of patients with chronic obstructive pulmonary disease (COPD) and asthma, and that ATP has effects on multiple cell types in the lungs resulting in increased inflammation, induction of bronchoconstriction and cough. These effects of ATP are mediated by cell surface P2 purinergic receptors (P2R) and involve other endogenous inflammatory agents. Recent clinical trials showed promise of treatment with P2X3R antagonists for alleviation of chronic cough.

The purpose of this review is to describe these studies and outline some of the remaining questions as well as the potential clinical implications associated with the pharmacologic manipulation of ATP signaling in the lungs.


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