Frontiers in Neuroscience (May 2021)

Peripherally Acting Opioids in Orofacial Pain

  • Qing Liu,
  • Qing Liu,
  • Hongwen He,
  • Hongwen He,
  • Lijia Mai,
  • Lijia Mai,
  • Shengyan Yang,
  • Shengyan Yang,
  • Wenguo Fan,
  • Fang Huang,
  • Fang Huang

DOI
https://doi.org/10.3389/fnins.2021.665445
Journal volume & issue
Vol. 15

Abstract

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The activation of opioid receptors by exogenous or endogenous opioids can produce significant analgesic effects in peripheral tissues. Numerous researchers have demonstrated the expression of peripheral opioid receptors (PORs) and endogenous opioid peptides (EOPs) in the orofacial region. Growing evidence has shown the involvement of PORs and immune cell-derived EOPs in the modulation of orofacial pain. In this review, we discuss the role of PORs and EOPs in orofacial pain and the possible cellular mechanisms involved. Furthermore, the potential development of therapeutic strategies for orofacial pain is also summarized.

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