Orphanin FQ is a functional anti-opioid peptide

J. S. Mogil, J. E. Grisel, R. K. Reinscheid, O. Civelli, John Belknap, David Grandy

Research output: Contribution to journalArticle

334 Citations (Scopus)

Abstract

The heptadecapeptide orphanin FQ has recently been shown to be the endogenous agonist for the orphan opioid-like receptor, LC132. The molecular evidence that LC132 and orphanin FQ are evolutionarily related to other opioid receptors and their ligands suggests that these proteins may also play a role in modulating opiate actions. We now report that orphanin FQ (0.5-10 nmol), injected intracerebroventricularly in mice, does not produce hyperalgesia as suggested previously but rather reverses opioid-mediated (i.e. naloxone-sensitive) stress-induced antinociception in three different algesiometric assays. In addition to its antagonism of endogenous opioid antinociception, orphanin FQ dose-dependently (2.5-25 nmol) reverses systemic morphine antinociception (5 mg/kg, s.c.). Based on these data, we propose that orphanin FQ is a functional anti-opioid peptide.

Original languageEnglish (US)
Pages (from-to)333-337
Number of pages5
JournalNeuroscience
Volume75
Issue number2
DOIs
StatePublished - Oct 25 1996

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Opioid Peptides
Opioid Receptors
Opioid Analgesics
Opiate Alkaloids
Hyperalgesia
Naloxone
Morphine
nociceptin
Ligands
Proteins

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Mogil, J. S., Grisel, J. E., Reinscheid, R. K., Civelli, O., Belknap, J., & Grandy, D. (1996). Orphanin FQ is a functional anti-opioid peptide. Neuroscience, 75(2), 333-337. https://doi.org/10.1016/0306-4522(96)00338-7

Orphanin FQ is a functional anti-opioid peptide. / Mogil, J. S.; Grisel, J. E.; Reinscheid, R. K.; Civelli, O.; Belknap, John; Grandy, David.

In: Neuroscience, Vol. 75, No. 2, 25.10.1996, p. 333-337.

Research output: Contribution to journalArticle

Mogil, JS, Grisel, JE, Reinscheid, RK, Civelli, O, Belknap, J & Grandy, D 1996, 'Orphanin FQ is a functional anti-opioid peptide', Neuroscience, vol. 75, no. 2, pp. 333-337. https://doi.org/10.1016/0306-4522(96)00338-7
Mogil JS, Grisel JE, Reinscheid RK, Civelli O, Belknap J, Grandy D. Orphanin FQ is a functional anti-opioid peptide. Neuroscience. 1996 Oct 25;75(2):333-337. https://doi.org/10.1016/0306-4522(96)00338-7
Mogil, J. S. ; Grisel, J. E. ; Reinscheid, R. K. ; Civelli, O. ; Belknap, John ; Grandy, David. / Orphanin FQ is a functional anti-opioid peptide. In: Neuroscience. 1996 ; Vol. 75, No. 2. pp. 333-337.
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