Functional consequences of short-term exposure to opioids versus cannabinoids in nonhuman primates.

Autor: Ding H; Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina, 27157, USA. Electronic address: hding@wakehealth.edu., Kiguchi N; Department of Physiological Sciences, School of Pharmaceutical Sciences, Wakayama Medical University, Wakayama, 640-8156, Japan., Mabry KM; Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina, 27157, USA., Kishioka S; Faculty of Wakayama Health Care Sciences, Takarazuka University of Medical and Health Care, Wakayama, 640-8392, Japan., Ko MC; Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina, 27157, USA.
Jazyk: angličtina
Zdroj: Neuropharmacology [Neuropharmacology] 2023 Feb 01; Vol. 223, pp. 109328. Date of Electronic Publication: 2022 Nov 08.
DOI: 10.1016/j.neuropharm.2022.109328
Abstrakt: Opioids provide pain relief but are associated with several adverse effects. Researchers are exploring cannabis-based medicine as an alternative. However, little is known about the tendency for physical dependence on cannabinoids in comparison with that on opioids in primates. The aim of this study was to compare the potency of heroin and delta-9-tetrahydrocannabinol (THC) in eliciting analgesic effects and the development of physical dependence between opioids and cannabinoids in both male and female rhesus monkeys. Systemic administration of either heroin (0.03-0.18 mg/kg) or THC (0.3-1.8 mg/kg) in a dose-dependent manner produced antinociceptive effects against an acute thermal nociceptive stimulus. The μ-opioid receptor antagonist naltrexone (0.01 mg/kg) and the cannabinoid receptor antagonist SR141716A (0.3 mg/kg) produced the same degree of rightward shift in the dose-response curves for heroin- and THC-induced antinociception, respectively. Monkeys implanted with telemetry devices were subjected to short-term repeated administrations (two injections per day for 1-3 days) of either heroin (0.18 mg/kg), morphine (1.8 mg/kg), THC (1.8 mg/kg), or CP 55,940 (0.032 mg/kg). Administration of naltrexone (0.01 mg/kg) increased respiration, heart rate, and blood pressure in heroin- or morphine-treated monkeys. In contrast, administration of SR141716A (0.3 mg/kg) did not cause a significant change in these physiological parameters in THC- or CP 55,940-treated monkeys. Additionally, morphine, but not CP 55,940, enhanced the monkeys' hypersensitivity to the algogen capsaicin. Collectively, these results demonstrate that in nonhuman primates, both opioids and cannabinoids exert comparable antinociception; however, physical dependence on opioids, but not cannabinoids, at their antinociceptive doses, occurs following short-term exposures.
Competing Interests: Declaration of competing interest None.
(Copyright © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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