The role of CaM/CaMK-Ⅱ signaling pathways in inflammatory pain in mice / 临床麻醉学杂志

ABSTRACT

Objective To investigate the role of CaM/CaMK-Ⅱ signaling pathways in inflammatory pain in mice.Methods Sixty male C57BL6 mice,weighing 25-27 g,were randomly divided into 3 groups (n =20)control group (group C),complete freunds adjuvant (CFA) group (group F) and KN-93+CFA group (group KF).Saline 50 μl were injected into the right side of the claw in group C.CFA 50 μl were injected into the right claw foot for the preparation of inflammatory pain models in group F.KN-93 45 nmol was injected i.c.v.30 min before CFA injection in group KF.The thermal withdrawal latency (TWL) were measured 30 min before injection,1 h and 4 h after injection.The protein expressions of CaMK-Ⅱ,c-fos and CREB in the spinal cord were measured at above time by Western blot.Results Compared with group C,TWL were lower in groups F and KF 1 h and 4 h after injection (P＜0.05).Compared with groups F,TWL in group KF were higher 1 h and 4 h after injection (P＜0.05).Compared with group C,the protein expressions of p-CaMK-Ⅱ,p-CREB,e-fos and mRNA expression of CaMK-Ⅱ,CREB,c-fos were higher in group F and KF 1 h and 4 h after injection (P＜0.05).Compared with group F,the protein expression of p-CaMK-Ⅱ,p-CREB,c-fos and mRNA expressions of CaMK-Ⅱ,CREB,c-fos in group KF were lower 1 h and 4 h after injection (P＜0.05).Conclusion CaM/CaMK-Ⅱ signaling pathways involved in inflammatory pain in mice.