首页> 外文期刊>The European Journal of Neuroscience >Repeated massage-like stimulation induces long-term effects on nociception: contribution of oxytocinergic mechanisms.
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Repeated massage-like stimulation induces long-term effects on nociception: contribution of oxytocinergic mechanisms.

机译:反复进行类似按摩的刺激会引起伤害感受的长期影响:催产素机制的贡献。

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摘要

Massage-like stroking induces acute antinociceptive effects that can be reversed by an oxytocin antagonist, indicating activation of oxytocin on endogenous pain controlling systems. We now demonstrate an increase in hindpaw withdrawal latencies (HWLs), in response to thermal and mechanical stimuli, which was present after six treatments of massage-like stroking every other day and which continued to increase through the remaining seven treatments. Repeated massage-like stroking also resulted in increased oxytocin-like immunoreactivity (oxytocin-LI) levels in plasma and periaquaductal grey matter (PAG). Furthermore, increases in HWLs were also present after injections of oxytocin into the PAG (0.1, 0.5 and 1.0 nmol). Intra-PAG oxytocin injection of 1 nmol followed by 1 or 20 nmol of naloxone attenuated the increments in HWL. Also, there was a dose-dependent attenuation of the oxytocin-induced antinociceptive effects following intra-PAG injection of the micro -opioid antagonist beta-funaltrexamine (beta-FNA) and the kappa-opioid antagonist nor-binaltorphimine (nor-BNI) but not the delta-antagonist naltrindole. The long-term antinociceptive effects of massage-like stroking may be attributed, at least partly, to the oxytocinergic system and its interaction with the opioid system, especially the micro - and the kappa-receptors in the PAG.
机译:像按摩一样的抚摸会诱发急性抗伤害感受作用,可通过催产素拮抗剂逆转,表明催产素在内源性疼痛控制系统上的激活。我们现在证明,对热和机械刺激的反应是后爪退缩潜伏期(HWLs)的增加,这是每隔一天进行六次类似按摩的中风治疗后出现的,并且在其余七个治疗中持续增加。反复进行类似按摩的敲击也会导致血浆和水管周围灰质(PAG)中的催产素样免疫反应性(oxytocin-LI)水平升高。此外,在将催产素注射到PAG(0.1、0.5和1.0 nmol)中后,HWL含量也增加。 PAG内催产素注射1 nmol,然后注射1或20 nmol的纳洛酮可减轻HWL的增加。此外,PAG内注射微阿片类药物拮抗剂β-富氨曲胺(beta-FNA)和kappa-阿片类药物拮抗剂nor-binaltorphimine(nor-BNI)后,催产素诱导的镇痛作用的剂量依赖性减弱。而不是三角洲对立的纳那多尔。按摩式抚摸的长期抗伤害性作用至少可以部分归因于催产素能系统及其与阿片样物质系统的相互作用,尤其是PAG中的微受体和κ受体。

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