Choline attenuates inflammatory hyperalgesia activating nitric oxide/cGMP/ATP-sensitive potassium channels pathway.

Journal Article (Journal Article)

New findings on neural regulation of immunity are allowing the design of novel pharmacological strategies to control inflammation and nociception. Herein, we report that choline, a 7-nicotinic acetylcholine receptor (α7nAChRs) agonist, prevents carrageenan-induced hyperalgesia without affecting inflammatory parameters (neutrophil migration or cytokine/chemokines production) or inducing sedation or even motor impairment. Choline also attenuates prostaglandin-E2 (PGE2)-induced hyperalgesia via α7nAChR activation and this antinociceptive effect was abrogated by administration of LNMMA (a nitric oxide synthase inhibitor), ODQ (an inhibitor of soluble guanylate cyclase; cGMP), andglibenclamide(an inhibitor of ATP-sensitive potassium channels). Furthermore, choline attenuates long-lasting Complete Freund's Adjuvant and incision-induced hyperalgesia suggesting its therapeutic potential to treat pain in rheumatoid arthritis or post-operative recovery, respectively. Our results suggest that choline modulates inflammatory hyperalgesia by activating the nitric oxide/cGMP/ATP-sensitive potassium channels without interfering in inflammatory events, and could be used in persistent pain conditions.

Full Text

Duke Authors

Cited Authors

  • Kusuda, R; Carreira, EU; Ulloa, L; Cunha, FQ; Kanashiro, A; Cunha, TM

Published Date

  • January 15, 2020

Published In

Volume / Issue

  • 1727 /

Start / End Page

  • 146567 -

PubMed ID

  • 31783002

Pubmed Central ID

  • PMC7054728

Electronic International Standard Serial Number (EISSN)

  • 1872-6240

Digital Object Identifier (DOI)

  • 10.1016/j.brainres.2019.146567


  • eng

Conference Location

  • Netherlands