Skip to main content
Log in

Involvement of the nociceptin opioid peptide receptor in morphine-induced antinociception, tolerance and physical dependence in female mice

  • Original Article
  • Published:
Metabolic Brain Disease Aims and scope Submit manuscript

Abstract

Nociceptin opioid peptide (NOP) receptor modulates pain transmission and is considered a prospective target for pain management. Under acute pain conditions in rodents, however, no definitive conclusions about effects of systemically intervening NOP receptors on nociception, classical opioid-induced antinociception, tolerance and physical dependence have been drawn. Given that opioid analgesia has sex differences, and females experience greater pain and consume more opioids, clarifying these issues in females will help develop novel analgesics. To clarify the role of NOP receptors on the pharmacological profiles of µ-opioid receptor agonists, in this study, a selective agonist (SCH221510) and antagonist (SB612111) of the NOP receptor were subcutaneously administered in female mice in multiple animal models. In hot-plate test, neither SCH221510 (3 and 10 mg/kg, sc) nor SB612111 (10 mg/kg, sc) produced significant antinociception. SCH221510 (3 mg/kg, sc) attenuated but SB612111 (10 mg/kg, sc) enhanced morphine-induced antinociception, with rightward and leftward shift of morphine dose-response curves, respectively. SCH221510 (3 mg/kg, sc) combined with morphine (10 mg/kg, sc) accelerated the development of morphine antinociceptive tolerance. Conversely, SB612111 (10 mg/kg, sc) delayed morphine tolerance development. Neither SCH221510 (3 mg/kg, sc) nor SB612111 (10 mg/kg, sc) statistically significantly altered the development of morphine-induced physical dependence. Therefore, systemic activation of NOP receptors attenuated morphine antinociception to acute thermal stimuli, facilitated morphine-induced antinociceptive tolerance but did not robustly alter physical dependence in female mice. Systemic blockade of NOP receptors produced opposite actions. These findings demonstrate that N/OFQ-NOP receptor system plays diverse roles in modulating pharmacological profiles of µ-opioid receptor agonists.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

Data availability

Datasets from this study are available from the corresponding authors on reasonable request.

Code availability

SPSS 26.0 and GraphPad Prism 7.04.

References

Download references

Funding

This work was supported by the National Natural Science Foundation of China (81874310).

Author information

Authors and Affiliations

Authors

Contributions

NW and JL designed the study. XQH, ZYW and JMC performed the experiments. NW, XQH, ZYW and JMC analyzed the data. NW, XQH and JL wrote the manuscript.

Corresponding authors

Correspondence to Ning Wu or Jin Li.

Ethics declarations

Conflicts of interest

All authors state that there is no conflict of interest. 

Ethical approval

All animal procedures were approved by the Institutional Review Committee for the Use of Animals (Beijing Institute of Pharmacology and Toxicology, China; Ethical approval number: IACUC of AMMS-06-2019-002) and were performed in accordance with the National Institutes of Health’s Guide for the Care and Use of Laboratory Animals (NIH Publication No. 80 − 23). None of the authors performed any human experiments as part of this research.

Consent to participate

All authors have given their consent to participate the study.

Consent for publication

All authors have read the manuscript and given their consent for publication. 

Additional information

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Hao, XQ., Wang, ZY., Chen, JM. et al. Involvement of the nociceptin opioid peptide receptor in morphine-induced antinociception, tolerance and physical dependence in female mice. Metab Brain Dis 36, 2243–2253 (2021). https://doi.org/10.1007/s11011-021-00783-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11011-021-00783-8

Keywords

Navigation