首页> 外文期刊>Western journal of nursing research >Lateral Hypothalamic Stimulation Reduces Hyperalgesia Through Spinally Descending Orexin-A Neurons in Neuropathic Pain
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Lateral Hypothalamic Stimulation Reduces Hyperalgesia Through Spinally Descending Orexin-A Neurons in Neuropathic Pain

机译:下丘脑外侧刺激通过神经病理性疼痛中的脊髓降序Orexin-A神经元减少痛觉过敏。

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摘要

No evidence to date shows that lateral hypothalamic (LH) stimulation produces orexin-A-mediated antinociception in the spinal cord dorsal horn (SCDH) in a model of neuropathic pain. We conducted experiments to examine the effect of orexin-A-mediated LH stimulation in female rats with chronic constriction injury (CCI) on thermal hyperalgesia. Rats receiving carbachol into the LH demonstrated antinociception on both the left CCI and right nonligated paws (p < .05). Rats were given carbachol in the LH followed by intrathecal injection of the orexin-1 (OX1) receptor antagonist SB-334867, which blocked LH-induced antinociception compared with control groups (p < .05) in the left paw, but not in the right paw. These findings support the hypothesis that LH stimulation produces antinociception in rats with thermal hyperalgesia from neuropathic pain via an orexin-A connection between the LH and the SCDH. Identification of this pathway may lead to studies using orexins to manage clinical pain.
机译:迄今为止,尚无证据表明在神经性疼痛模型中,下丘脑外侧(LH)刺激在脊髓背角(SCDH)中产生orexin-A介导的抗伤害感受。我们进行了实验,以检验orexin-A介导的LH刺激对慢性收缩损伤(CCI)的雌性大鼠热痛觉过敏的影响。 LH中接受卡巴胆碱的大鼠在左CCI和右未结扎的爪子上均表现出抗伤害作用(p <.05)。给大鼠左巴中的卡巴胆碱,然后鞘内注射orexin-1(OX1)受体拮抗剂SB-334867,与对照组相比,左手爪中的LH诱导的镇痛作用较对照组(p <.05)大,但在左爪中则没有。右爪这些发现支持以下假设:LH刺激通过LH和SCDH之间的orexin-A连接在神经性疼痛引起的热痛觉过敏大鼠中产生抗伤害感受。鉴定该途径可能导致使用食欲肽治疗临床疼痛的研究。

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