Effects of cyclooxygenase-1 inhibitor on spinal ERK expression in rats with postoperative pain / 中国应用生理学杂志
Chinese Journal of Applied Physiology
;
(6): 46-50, 2007.
Artículo
en Chino
| WPRIM
| ID: wpr-253090
ABSTRACT
<p><b>AIM</b>To explore the effects of intrathecal injection of selective cyclooxygenase-1 (COX-1) inhibitor, SC-560, on mechanical allo dynia and spinal ERK protein expression in rats with postoperative pain.</p><p><b>METHODS</b>Rats were divided into 4 groups control group, postoperative pain group, SC-560 group and DMSO group. Mechanical withdrawal threshold (MWT), immunohistochemical and Western blotting technique were used to evaluate mechanical hypersensitivity and the expression of phospho-ERK in the spinal cord, respectively.</p><p><b>RESULTS</b>(1) Behavior test rats developed allodynia 1 h after operation and SC-560 100 microg administrated intrathecally demonstrated a significant reduction in postoperative hypersensitivity. (2) Immunohistochemical staining Phospho-ERK positive neurons in the rat superficial spinal dorsal horn increased significantly 1 h after incision compared with that of non-incision group. Intrathecal administration of SC-560 preoperatively could significantly reduce the number of phospho-ERK positive neurons. (3) Western blot expression of phospho-ERK1/2 protein in the lumbar spinal cord increased significantly 1 h after incision and decreased by intrathecal injection of SC-560.</p><p><b>CONCLUSION</b>SC-560 administrated intrathecally can inhibit mechanical hypersensitivity induced by postoperative pain in rats and this anti-allodynic process may mediated by spinal ERK.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Dolor Postoperatorio
/
Farmacología
/
Pirazoles
/
Médula Espinal
/
Dimensión del Dolor
/
Inhibidores de la Ciclooxigenasa
/
Ratas Wistar
/
Quinasas MAP Reguladas por Señal Extracelular
/
Metabolismo
Límite:
Animales
Idioma:
Chino
Revista:
Chinese Journal of Applied Physiology
Año:
2007
Tipo del documento:
Artículo
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