急性运动会改变老年人的免疫反应,在高强度干预中观察到细胞外囊泡变化
Alejandra P Garza1, Lorena Morton1, Anna-Lena Motsch1
1Institute of Inflammation and Neurodegeneration, Otto-von-Guericke University, Magdeburg, Germany.
急性炼强度和性别显著影响老年人的免疫反应. 适度的运动促进了单细胞激活,而强烈的运动增强了先天免疫力和细胞外囊泡的释放,这表明个性化的运动可以促进健康的衰老.
科学领域:
- 免疫学 免疫学 免疫学
- 运动生理学 运动生理学
- 老年学是指老年学的学科.
背景情况:
- 衰老与免疫衰老和炎症有关,增加了对与年龄有关的疾病的易感性.
- 运动会影响免疫功能和炎症,但对老年人的最佳强度和性别特异性影响尚未完全理解.
研究的目的:
- 为了研究急性中度与强度运动对免疫细胞子集,细胞因子档案和健康老年人细胞外囊 (EV) 释放的影响.
- 为了检查这些运动诱导的免疫调节的基于性别的差异.
主要方法:
- 33名老年人进行了中度 (60% VO2max) 或强度 (最大 CPET) 的自行车运动.
- 血液样本在运动前收集,并在运动后30分钟和24小时收集.
- 免疫细胞,细胞因子和EVs使用流动细胞计,纳米粒子跟踪分析和多重分析进行了分析.
主要成果:
- 在女性中,适度运动会增加单细胞激活 (CD86,CX3CR1) 和IL-6.
- 强烈的运动导致了更大的先天免疫激活 (单细胞,NK细胞) 和持续的TNFα.
- 细胞外囊泡 (四素) 在强度运动后24小时增加,性别之间观察到不同的EV配置文件 (女性的CD4+EV,男性的HLA-ABC+EV).
结论:
- 急性运动强度和性别在老年人中不同调节免疫反应.
- 强烈的运动显著影响天生的免疫力和细胞外囊泡的释放.
- 研究结果表明,个性化的炼策略可以提高免疫弹性,促进健康的衰老.
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