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Naltrexone, but not, atropine or yohimbine, antagonizes suppression of formalin-induced spinal sensitization by intrathecal nociceptin

机译:纳曲酮(但不是阿托品或育亨宾)拮抗鞘内伤害感受器抑制福尔马林诱导的脊髓致敏作用

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We investigated the effects of spinal nociceptin on formalin-induced spinal sensitization and examined the role of the opioidergic, alpha 2-adrenergic and muscarinic cholinergic receptors in the nociceptin-produced suppression of spinal sensitization. The results demonstrated that spinal nociceptin suppressed the formalin-induced spinal sensitization in a dose-dependent manner (1, 5 and 10 nmol). The inhibitory effect of 10 nmol of nociceptin on spinal sensitization, was readily antagonized by naltrexone, but not by atropine or yohimbine. Each of the antagonists, naltrexone, atropine or yohimbine, alone had no effect on the formalin-induced spinal sensitization. Our results show that spinal nociceptin elicits dose-dependent, naltrexone-reversible suppression of spinal sensitization evoked by injection of formalin. (C) 1998 Elsevier Science Inc. [References: 27]
机译:我们调查了脊髓痛觉敏对福尔马林诱导的脊髓致敏作用的影响,并研究了视神经碱,α2肾上腺素和毒蕈碱胆碱能受体在痛觉敏产生的脊髓敏化抑制中的作用。结果表明,脊髓痛觉敏蛋白以剂量依赖性方式(1、5和10 nmol)抑制福尔马林诱导的脊髓致敏作用。纳曲酮可轻易拮抗10nmol伤害感受肽对脊柱敏化的抑制作用,而阿托品或育亨宾则不能。每种拮抗剂纳曲酮,阿托品或育亨宾单独对福尔马林诱导的脊髓致敏作用没有影响。我们的结果表明,脊髓痛觉敏可引起福尔马林注射引起的剂量依赖性,纳曲酮可逆的脊髓致敏抑制作用。 (C)1998 Elsevier Science Inc. [参考:27]

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