Behavioral effects of a synthetic agonist selective for nociceptin/orphanin FQ peptide receptors in monkeys.

Behavioral effects of a synthetic agonist selective for nociceptin/orphanin FQ peptide receptors in monkeys.
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DOI:
10.1038/npp.2009.33
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发表时间:
2009-08
期刊:
Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology
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一种非肽类NOP(痛觉肽/孤儿蛋白FQ肽)受体激动剂ro64 -6198在灵长类动物中的行为效应尚未被研究。本研究的目的是验证Ro 64-6198对猴行为影响的受体机制,并系统比较Ro 64-6198与μ-阿片受体激动剂阿芬太尼对猴行为的影响。Ro 64-6198 (0.001-0.06 mg/kg, s.c)和阿芬太尼(0.001-0.06 mg/kg, s.c)对急性有害刺激(50°C水)和辣椒素诱导的异位性疼痛均产生抗镇痛作用。NOP受体拮抗剂J-113397 (0.01 ~ 0.1 mg/kg, s.c)呈剂量依赖性,使Ro 64-6198诱导的抗刺激作用曲线向右偏移。J-113397的表观pA2值为8.0。用J-113397和纳曲酮拮抗剂研究表明,Ro 64-6198产生NOP受体介导的不依赖于μ-阿片受体的抗感觉。此外,阿芬太尼剂量依赖性地产生呼吸抑制和瘙痒/抓痒反应,但抗伤害性剂量的Ro 64-6198没有产生这种作用。更重要的是,在猴子的自我给药过程中,Ro 64-6198没有产生与阿芬太尼、可卡因或甲氧己酮相当的强化作用。这些结果提供了第一个功能性证据,证明NOP受体的激活在灵长类动物中产生抗感觉而不增强作用。非肽类NOP受体激动剂可能具有治疗价值,作为一种新型镇痛药,在人类中没有滥用的危险。
Behavioral effects of a nonpeptidic NOP (nociceptin/orphanin FQ Peptide) receptor agonist, Ro 64-6198, have not been studied in primate species. The aim of the study was to verify the receptor mechanism underlying the behavioral effects of Ro 64-6198 and to systematically compare behavioral effects of Ro 64–6198 with those of a μ-opioid receptor agonist, alfentanil, in monkeys. Both Ro 64-6198 (0.001–0.06 mg/kg, s.c.) and alfentanil (0.001–0.06 mg/kg, s.c.) produced antinociception against an acute noxious stimulus (50°C water) and capsaicin-induced allodynia. An NOP receptor antagonist, J-113397 (0.01–0.1 mg/kg, s.c.), dose-dependently produced rightward shifts of the dose–response curve of Ro 64-6198-induced antinociception. The apparent pA2 value of J-113397 was 8.0. Antagonist studies using J-113397 and naltrexone revealed that Ro 64-6198 produced NOP receptor-mediated antinociception independent of μ-opioid receptors. In addition, alfentanil dose-dependently produced respiratory depression and itch/scratching responses, but antinociceptive doses of Ro 64-6198 did not produce such effects. More important, Ro 64-6198 did not produce reinforcing effects comparable with those of alfentanil, cocaine, or methohexital under self-administration procedures in monkeys. These results provide the first functional evidence that the activation of NOP receptors produces antinociception without reinforcing effects in primates. Non-peptidic NOP receptor agonists may have therapeutic value as novel analgesics without abuse liability in humans.
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发表时间: 2003-01-01
期刊: NEUROSCIENCE
影响因子: 3.3
作者:
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影响因子: 7.3
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影响因子: 3.5
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DOI: 10.1124/jpet.104.068411
发表时间: 2004-10-01
影响因子: 3.5
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DOI: 10.1097/00000542-199706000-00008
发表时间: 1997-06-01
期刊: ANESTHESIOLOGY
影响因子: 8.8
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通讯作者: Tong, CY