MPTP诱导的帕金森病模型小鼠血浆IL-1、IL-6水平的变化及其与脑不对称的关系

Kinetic changes of plasma IL-1 and IL-6 levels in MPTP-induced Parkinson’s disease model mice and their relationship with brain asymmetry

目的:建立甲基苯基四氢吡啶(MPTP)诱导的帕金森病模型小鼠,检测血浆IL-6和IL-1的水平,并探讨其与脑不对称的关系。方法:利用区分行为不对称的伸爪取食试验,将C57BL/6J小鼠区分为反映脑不对称的左利小鼠和右利小鼠。给小鼠腹腔注射MPTP25mg/kg,每日1次,连续5日,建立小鼠帕金森病模型,对照组注射等体积的生理盐水。最后1次注射MPTP后1、3、14d杀鼠取血,采用ELISA检测各时间点小鼠血浆IL-6和IL-1的水平。结果:正常对照组血浆IL-6水平很低,而模型组小鼠在末次注射MPTP后14d,血浆IL-6的水平显著升高(P<0.01)。而且第14天右利小鼠血浆IL6的水平高于左利小鼠IL-6水平(P<0.05)。正常对照组小鼠血浆IL-1的水平也较低,而模型组小鼠在末次注射MPTP后3d,血浆IL-1的水平显著升高(P<0.05),而且左利小鼠的水平明显高于右利小鼠(P<0.01)。结论:IL-6和IL-1可能参与了MPTP诱导的C57BL/6J小鼠帕金森病的发生发展,并与脑不对称有关。

AIM: To set up Parkinson's disease (PD) model mice by using 1-methyl-4-phenly-1, 2, 3, 6-tetrahydropyridine (MPTP), detect the levels of plasma IL-1 and IL-6, and explore their relationship with brain asymmetry. METHODS: Male C57BL/6J mice were divided into right pawed mouse group and left pawed mouse group according to paw preference test which reflects brain asymmetry. Mice were injected intraperitoneally with 25 mg/kg MPTP each day for 5 consecutive days. The mice were executed and blood samples were taken at 1, 3 and 14 days after the last time injection. Control mice were only injected with normal saline. The levels of plasma IL-6 and IL-1 were detected by ELISA. RESULTS: Plasma IL-6 level in normal control mice was low, but elevated dramatically at 14 days after last time injection of MPTP in PD model mice. Furthermore, IL-6 level of right pawed mice was higher than that of left pawed mice. Plasma IL-1 levels also increased on day 3 after last time injection of MPTP, and the level of left pawed mice was higher than that of right pawed mice. CONCLUSION: IL-6 and IL-1 probably participate in the occurrence and progress of MPTP-induced PD in model mice, and were related with brain asymmetry.