흰쥐의 척수에서 Glutmamte가 매개하는 Nociceptive Response에 있어서 Protein kinase C의 관련성

• 영문명: The Involvement of Protein kinase C in Glutamate-Mediated Nociceptive Response at the Spinal Cord of Rats
• 발행기관: 대한약학회
• 저자명: 김성정(Sung Jeong Kim) 박전희(Cheon Hee Park) 이영욱(Young Wook Lee) 양성준(Seong Jun Yang) 이종은(Jong Un Lee) 이병천(Byung Cheon Yi) 손의동(Uy Dong Sohn) 허인회(In Hoi Huh)
• 간행물 정보: 『약학회지』제43권 제2호 (1999년), 263~272쪽, 전체 10쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1999.04.27

영문 초록

When glutamate was injected intrathecally, the result is similar to those produced by TPA injected. The involvement of protein kinase C (PKC) in the nociceptive responses in rat dorsal horm neurons of lumbar spinal cord was studied. In test with formalin, a PKC inhibitor (chelerythrine) inhibited dose-dependently the formalin-induced behavior response. Neomycin also inhibited it significantly. But, a PKC activator (12-O-tetradecanoylphorbol-13-ester, TPA) showed reverse effect. When gluatamate was injected intrathecally, we observed the result is similar to those produced by TPA injection. On the other hand, intrathecal injection of glutamate induced thermal and mechanical hyperalgesia. In Tail-flick test, we examined the involvement of PKC on the glutamate-induced thermal hyperalgesia. Chelerythrine showed an inhibitory effect and TPA enhanced thermal response. Glutamate decreased the mechanical threshold signficantly. A pretreatment of chelerythrine and neomycin inhibited glutamate-induced mechanical hyperalgesia, but the effect of neomycin was not signficant. TPA had little effect on the mechanical nociceptive response. These results suggest that the PKC activation through metabotropic receptor at postsynaptic region of spinal cord dorsal horn neurons may influence on the persistent nociception produced by chemical stimulation with formalin, thermal and mechanical hyperalgesia induced by glutamate.

키워드

PKC 12-O-tetradecanoylphorbol-13-ester(TPA) nociceptive responses glutamate hyperalgesia.