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신경병성 통증모델쥐에서 산화질소합성효소 억제제가 척수후각세포의 활성도에 미치는 영향.

Other Titles
 Effects of NO synthase inhibitor on responsiveness of dorsal horn neurons in neuropathic pain animal model. 
Authors
 임중우  ;  곽영섭  ;  정승수  ;  이규래  ;  윤덕미  ;  남택상 
Citation
 Korean Journal of Pain (대한통증학회지), Vol.13(1) : 19-30, 2000 
Journal Title
 Korean Journal of Pain (대한통증학회지) 
ISSN
 2005-9159 
Issue Date
2000
Keywords
Iontophoresis ; L-NAME ; Neuropathic ; Nitric oxide
Abstract
BACKGROUND: Partial nerve injury to a peripheral nerve may induce the development of neuropathic pain which is characterized by symptams such as spontaneous burning pain, allodynia and hyperalgesia. Though underlying mechanism has not fully understood, sensitization of dorsal horn neurons may con- tribute to generate such symptoms. Nitric oxide acts as an inter- and intracellular messenger in the nervous system and is produced from L-arginine by nitric oxide synthase (NOS). Evidence is accumulating which indicate that nitric oxide may mediate nociceptive information trsnsmission. Recently, it has been reported that NOS inhibitor suppresses neuropathic pain behavior in an neuropathic pain animal model. This study was conducted to determine whether nitric oxide could be involved in the sensitization of dorsal horn neurons in neuropathic animal model. METHODS: Neuropathic animal model was made by tightly ligating the left L5 and L6 spinal nerves and we examined the effects of iontophoretically applied NOS inhibitot (L-NAME) on the dorsal horn neurons responses to mechanical stimuli within the receptive fields. RESULTS: In normal animals, NOS inhibitor (L-NAME) specifically suppressed the responses to the noxious mechanical stimuli. In neuropathic animals, the dorsal horn neuron's responses to mechanical stimuli were enhanced and NOS inhibitor suppressed the dorsal horn neurons enhanced responses to non-noxious stimuli as well as those to noxious ones. CONCLUSIONS: These results suggest that nitric oxide may mediate nociceptive transmission in normal animal and also mediate sensitization of dorsal horn neurons in neuropathic pain state.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Physiology (생리학교실) > 1. Journal Papers
Yonsei Authors
Nam, Taick Sang(남택상)
Leem, Joong Woo(임중우) ORCID logo https://orcid.org/0000-0002-1605-2230
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/172397
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