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Changes in expression of NF-κB, IL-6 and TNF-α in spinal cord in a rat model of bone cancer pain / 中华麻醉学杂志
Chinese Journal of Anesthesiology ; (12): 1030-1033, 2010.
Article Dans Chinois | WPRIM | ID: wpr-385279
ABSTRACT
Objective To evaluate the changes in expression of NF-κB, IL-6 and TNF-α in spinal cord in a rat model of bone cancer. Methods Seventy-two female SD rats weighing 150-180 g were randomly divided into 3 groups (n = 24 each) control group (group C);sham operation group (group S) and bone cancer pain group (group BP). Bone cancer was induced by intra-tibial inoculation of 1 × 105 Walker 256 breast cancer cells. Paw withdrawal threshold to mechanical stimulation was measured with yon Frey filaments. The expression of NF-κB p65, IL-6 and TNF-α mRNA in the spinal cord was determined by RT-PCR and the expression of NF-κB p65 by immuno-histochemistry and NF-κB p65 positive cell count was determined. Results The paw withdrawal threshold was significantly lower and the expression of NF-κB p65, NF-κB p65 mRNA, IL-6 mRNA, TNF-α mRNA and NF-κB p65 positive cell count in the spinal cord were significantly higher in group BP than in group C and S ( P <0.05 or 0.01 ). Conclusion Intra-tibial inoculation of Walker 256 breast cancer cells activates NF-κB in the spinal cord, leading to the increased release of IL-6 and TNF-α and mechanical hyperalgesia.

Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Type d'étude: Étude pronostique langue: Chinois Texte intégral: Chinese Journal of Anesthesiology Année: 2010 Type: Article

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Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Type d'étude: Étude pronostique langue: Chinois Texte intégral: Chinese Journal of Anesthesiology Année: 2010 Type: Article