Effect of CGRP receptor antagonist CGRP8-37 on nociceptive response, NOS expression and NO content in the dorsal horn of spinal cord during formalin-induced inflammatory pain in rats / 中国应用生理学杂志
Chinese Journal of Applied Physiology
; (6): 291-295, 2004.
Artigo
em Chinês
| WPRIM (Pacífico Ocidental)
| ID: wpr-330117
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>AIM</b>To study the effect of CGRP receptor antagonist CGRP8-37 on nociceptive response and expression of nitric oxide synthase (NOS) and content of nitric oxide (NO) in the dorsal horn of the spinal cord of rats during formalin-induced inflammatory pain.</p><p><b>METHODS</b>Using formalin injection into right hind paw induced inflammatory pain. Counting the times of flinching reflex was used to observe the degree of spontaneous pain. NADPH-d histochemistry was used to observe the changes of NOS expression. The content of NO was observed by measuring the contents of nitrate/nitrite (NO3- / NO2-).</p><p><b>RESULTS</b>spontaneous pain behavioral was elicited by formalin injection. The NOS expression and NO content significantly increased in the spinal cord at 24 h after formalin injection. Intrathecal injection of CGRP8-37 could significantly inhibit the response of spontaneous pain and the increases of NOS expression and NO content induced by formalin injection.</p><p><b>CONCLUSION</b>The activation of CGRP receptors enhances NOS expression and NO production in the dorsal horn of the spinal cord during formalin-induced inflammatory pain.</p>
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Dor
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Fragmentos de Peptídeos
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Farmacologia
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Medula Espinal
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Peptídeo Relacionado com Gene de Calcitonina
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Ratos Sprague-Dawley
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Receptores de Peptídeo Relacionado com o Gene de Calcitonina
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Óxido Nítrico Sintase
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Formaldeído
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Metabolismo
Limite:
Animais
Idioma:
Chinês
Revista:
Chinese Journal of Applied Physiology
Ano de publicação:
2004
Tipo de documento:
Artigo