颞叶癫痫小鼠外周血细胞因子mRNA水平变化☆
2016-08-03周媛金立德赵敏曹霞钱希颖
周媛金立德赵敏曹霞钱希颖
颞叶癫痫小鼠外周血细胞因子mRNA水平变化☆
周媛*金立德△赵敏※曹霞*钱希颖△
目的研究颞叶癫痫小鼠发作2 h外周血IFN-α6、IFN-γ、IL-1β以及TNFR-m18等细胞因子变化情况。方法采用real-time PCR法检测癫痫发作后10 min、30 min、1 h和2 h癫痫小鼠外周血中IFN-α6、IFN-γ、IL-1β以及TNFR-m18 mRNA的表达。结果 癫痫组30 min时IL-1β mRNA的表达水平与对照组及SE10 min比较均升高(P<0.05);癫痫组10 min时IFN-α6 mRNA表达水平低于对照组(P<0.05);IFN-γ mRNA表达水平在SE10 min时与对照组及SE其他时间点相比有统计学差异(P<0.05);TNFR-m18 mRNA表达水平在SE 1 h时与对照组及SE其他时间点(10 min、30 min、2 h)相比升高(P<0.01)。结论癫痫状态下外周血中细胞因子mRNA表达水平失衡,可能与急性期癫痫的免疫病理过程有关。
癫痫 外周血 细胞因子
【Abstract】Objective To study the expression changes of IL-1β、FN-α6、IFN-γ and TNFR-m18 in peripheral blood within 2 hours in epileptic mice.Methods Semi quantitative real-time PCR was used to test the mRNA expression level of IL-1β、FN-α6、IFN-γ and TNFR-m18 in peripheral blood from normal and pilocarpine-induced epileptic mice at different time points(10 min,30 min,1 h and 2 h).Results The mRNA expression level of IL-1β increased at 30 min(1.8±0.07),1 h(2.9±0.98)and 2 h(1.45±0.11)after pilocarpine-induced status epilepticus comparing with that of control and SE 10 min(0.81±0.09)(P<0.05).The IFN-α6 mRNA expression level was lower at 10 min(0.59±0.05,P<0.05)than that of control.IFN-γ mRNA expression level was higher at 10 min(2.85±0.11)than that of control and at other time points during SE(P<0.01).TNFR-m18 mRNA expression level was higher at 1h(2.84±0.15)than that of control,and at other time points during SE(P<0.01).Conclusion The immune system of epileptic state is active,the imbalance of cytokine expression in peripheral blood may be related to the immune pathological process of acute stage of epilepsy.
【Key Words】Epilepsy Peripheral blood Cytokines
颞叶癫痫(temporal lobe epilepsy,TLE)病灶起源于颞叶(被认为主要是海马结构),以反复痫性发作为特征,其发生机制至今尚未完全明确。在中枢神经系统网络中,免疫系统能通过产生多种免疫活性物质调节神经功能[1],参与神经免疫调节和炎性反应过程,细胞因子的异常表达与癫痫发生及神经细胞损伤间存在密切联系[2]。腹腔内反复注射致痫剂量的胆碱能受体激动剂毛果芸香碱(Pilocarpine)能引起癫痫持续状态的发生,原因可能与脑内神经病理性损伤有关[3-5]。本实验探索了TLE小鼠急性期不同时间点外周血IFN-α6、IFN-γ、IL-1β及TNFR-m18细胞因子mRNA的改变及其与TLE进展的相关性,为TLE的诊断和治疗提供新的思路。
1 动物与方法
1.1实验动物昆明小鼠60只由昆明医学院实验动物中心提供,诱导用昆明小鼠的年龄控制在2个月左右(60±5 d),体质量20~25 g,雌雄不限。小鼠在毛果芸香碱诱导癫痫发作后不同时间点(10 min,30 min,1 h,2 h)被处死,采集小鼠外周血备用。……
