循环自由细胞DNA对1型糖尿病男性重复运动的反应
Konrad Walczak1, Julia Grzybowska-Adamowicz2, Robert Stawski3
1Department of Internal Medicine and Nephrodiabetology, Medical University of Lodz, 90-549 Lodz, Poland.
强烈的运动增加了健康男性和1型糖尿病患者的细胞自由DNA (cf-DNA). 然而,运动后的cf-DNA升高在各组之间没有显著差异,这表明运动耐受性发展.
科学领域:
- 运动生理学 运动生理学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 强烈的运动会触发中性粒细胞外细胞陷 (NETs) 和细胞分解,增加循环的无细胞DNA (cf-DNA).
- 较高的cf-DNA水平也是自身免疫性疾病的特征,如1型糖尿病 (T1DM).
- 重复的消耗性运动可以诱导生理适应和耐受性.
研究的目的:
- 为了比较T1DM男性和健康对照者之间的运动诱导的cf-DNA增加.
- 为了研究T1DM患者的运动耐受性发展.
- 评估cf-DNA作为运动反应中的炎症标志物.
主要方法:
- 参与者在3次会议中以70%的VO2max进行跑步机运行,以至于疲劳,并有72小时的休息时间.
- 血cf-DNA (核和线粒体) 在运动前和运动后使用实时PCR测量.
- 血液细胞计数和代谢标志物也被分析.
主要成果:
- 每次炼都显著提高了cf-DNA水平,在T1DM的第二次炼后发现了cf-mt-DNA的增加.
- cf-DNA度在72小时内恢复到基线.
- 在T1DM和健康组之间没有观察到运动诱导的cf-DNA增加的显著差异.
结论:
- 无细胞DNA是炎症的敏感指标.
- 患有T1DM的个体表现出与健康男性相似的运动后cf-DNA反应,表明潜在的运动耐受性.
- 进一步的研究可以探索在不同强度的运动期间T1DM中的cf-DNA动态.
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