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三七总皂苷对模拟航渡及大强度运动大鼠神经-内分泌-免疫网络的影响

Keywords: 模拟航渡,大强度运动,三七总皂苷,神经-内分泌-免疫网络

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Abstract:

目的:观察模拟航渡及大强度运动对雄性大鼠神经-内分泌-免疫网络的影响及三七总皂苷的调控作用。方法:将6周龄的SD雄性大鼠随机分为静息对照组(QC组)、训练对照组(TC组)和三七总皂苷组(PNS组),每组10只。QC组不接受任何刺激,在生理盐水灌胃1周后即进行取样。TC组和PNS组大鼠经过10d递增负荷跑台训练,分别生理盐水和PNS灌胃1周后,进行模拟航渡及高强度运动,结束即刻取血,使用放免法测定大鼠血清皮质酮(Cort)、促肾上腺皮质激素(ACTH)、β-内啡肽(β-EP)、神经肽Y(NPY)、白介素1β(IL-1β)和白介素6(IL-6);采用免疫组织化学方法检测各组大鼠垂体ACTH,NPY的表达水平,并进行相关分析;电镜下观察垂体、肾上腺超微结构。结果:训练对照组大鼠与静息对照组相比,血清Cort,β-EP水平显著升高,同时,垂体ACTH,NPY表达水平显著降低。灌服PNS后与TC组相比,血清Cort,ACTH及NPY水平下降;同时,免疫组化结果表明垂体ACTH,NPY表达水平也明显增高。在此基础上观察到应激后大鼠腺垂体及肾上腺皮质的超微结构改变,功能受损,灌服PNS后对细胞具有保护作用。结论:负性心理应激及大强度的运动训练使大鼠神经-内分泌-免疫网络功能紊乱,PNS对神经-内分泌-免疫网络具有调控作用。

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