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EFFECT OF ORPHANIN FQ ON ACUPUNCTURE ANALGESIA AND NOXIOUS STIMULATION IN THE PERIAQUEDUCTAL GRAY

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Author:
No author available
Journal Title:
ACTA PHYSIOLOGICA SINICA
Issue:
3
DOI:
10.3321/j.issn:0371-0874.1998.03.004
Key Word:
孤啡肽;μ阿片受体;中脑导水管周围灰质;针刺镇痛;痛

Abstract: 孤啡肽(orphanin FQ,OFQ)是新近发现的神经肽,结构与内阿片肽相似,但作用明显不同.本文采用脑核团内微量注射方法,在大鼠电刺激甩尾测痛模型上,观察0FQ在中脑导水管周围灰质(PAG)内对痛和针刺镇痛的影响.结果表明:PAG内微量注射OFQ可使大鼠痛阈降低,并明显对抗针刺镇痛;另外还发现,0FQ在PAG内还可以对抗μ受体激动剂羟甲芬太尼加强针刺镇痛的效应.本文结果提示,OFQ在PAG内加强动物的痛感受,对抗针刺镇痛.

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