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Chapter 38 - ATP and its P2 receptors in pulmonary disorders
Book chapter

Chapter 38 - ATP and its P2 receptors in pulmonary disorders

Amir Pelleg, Sir Peter Barnes and Edward S. Schulman
ATP, pp 837-846
2026

Abstract

autocrine and paracrine agent Cellular energetics and metabolism extracellular ATP P2R subtypes pulmonary disorders Pulmonary Diseases
Adenosine 5’-triphosphate (ATP) is found in every cell of the human body where it plays a critical role in cellular energetics and metabolism. ATP is released from multiple cell types under physiologic and pathophysiologic conditions. Extracellular ATP acts as an autocrine and paracrine agent, the effects of which on targeted cells are mediated by cell-surface receptors, P2 purinergic receptors (P2Rs). Pathophysiologic conditions in the lungs are associated with elevated extracellular levels of ATP and the activation of several P2R subtypes, resulting in bronchoconstriction, cough, and proinflammatory effects. In 2002, this complex pathophysiologic mechanism was originally termed “ATP Axis in Chronic Obstructive Pulmonary Disorders.” Since then, numerous studies have validated this concept and outlined the details of the mechanistic roles that ATP plays in multiple pulmonary disorders, including asthma, COPD, and cough. This review is a succinct update of our knowledge in this field.

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