4.5 Article Proceedings Paper

Neurokinin3 receptor regulation of the airways

期刊

VASCULAR PHARMACOLOGY
卷 45, 期 4, 页码 227-234

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.vph.2005.08.031

关键词

asthma; SB223412; SR142801; sB235375; capsaicin; axon reflex; parasympathetic; vagal; cough; mucus

资金

  1. NHLBI NIH HHS [R01 HL058525] Funding Source: Medline

向作者/读者索取更多资源

Neurokmin(3) (NK3) receptors may regulate the airways primarily through actions on the nerves. In the periphery, airway parasympathetic ganglia neurons are depolarized following NK3 receptor activation resulting subsequently in the facilitation of synaptic transmission. Such an effect may account for the excessive parasympathetic reflex effects (e.g. airway smooth muscle contraction, vascular engorgement, mucus secretion) associated with asthma and chronic obstructive pulmonary disease (COPD). In the central nervous system (CNS), NK3 receptor activation may regulate airway vagal afferent relay neurons, rendering them hyperresponsive to parallel inputs from glutamate containing afferent nerves. This process is analogous to the process of central sensitization regulating hyperalgesia and pain in somatic tissues. In both the CNS and in the airways, NK3 receptors are likely activated by either substance P and/or neurokinin A (NKA), both of which are full agonists at NK3 receptors, as there is little evidence that airway nerves express neurokinin B (NKB). Evidence for other potential sites of regulation by NK3 receptors in the airways (e.g. vasculature, airway smooth muscle, epithelium, mucus glands) is either inconclusive or conflicting. (c) 2006 Elsevier Inc. All rights reserved.

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