Naloxone‐insensitive inhibition of acetylcholine release from parasympathetic nerves innervating guinea‐pig trachea by the novel opioid, nociceptin
Open Access
- 3 February 1997
- journal article
- Published by Wiley in British Journal of Pharmacology
- Vol. 120 (5) , 735-736
- https://doi.org/10.1038/sj.bjp.0701013
Abstract
The novel peptide, nociceptin and the μ‐opioid agonist [d‐Ala2, N‐Me‐Phe4, Gly5‐ol]‐enkephalin (DAMGO) produced a concentration‐dependent inhibition of electrical field stimulation (EFS)‐evoked release of acetylcholine (ACh) from cholinergic nerves innervating guinea‐pig trachea. The non‐selective opioid receptor antagonist, naloxone, did not antagonize the inhibitory action of nociceptin under conditions where the inhibition of ACh release evoked by DAMGO was completely reversed. It is suggested that DAMGO and nociceptin can inhibit cholinergic, parasympathetic neurotransmission to the airways via the activation of classical (naloxone‐sensitive) and novel (naloxone‐insensitive) opioid receptors, respectively.British Journal of Pharmacology (1997) 120, 735–736; doi:10.1038/sj.bjp.0701013Keywords
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