Circulating sytokines and hormones with immunosuppressive but neutrophil-priming potentials rise after endurance exercise in humans

Katsuhiko Suzuki, Mutsuo Yamada, Shigeyoshi Kurakake, Noriyoshi Okamura, Kanemitsu Yamaya, Qiang Liu, Satoru Kudoh, Kenji Kowatari, Shigeyuki Nakaji*, Kazuo Sugawara


研究成果: Article査読

249 被引用数 (Scopus)


To investigate the mechanisms of exercise-induced immune perturbations, we measured promising immunomodulatory hormones and cytokines in plasma of 16 male marathon runners before and after a competitive 42.195-km race. Interleukin 1-beta (IL-1β) and interferon gamma (IFN-γ) concentrations remained unchanged after the marathon. The cytokines IL-12, IFN-α and tumour necrosis factor alpha (TNF-α) could not be detected even using highly sensitive specific immunoassays, indicating at least that overshooting responses of these cytokines had not occurred after exercise. As mechanisms for the small changes in these cytokines, we demonstrated for the first time a significant rise in concentrations of inhibitory cytokine IL-10 in addition to the immunosuppressive hormone cortisol, although concentrations of IL-4 and transforming growth factor-beta (TGF-β) were unaffected by the race. Furthermore, concentrations of IL-1 receptor antagonist (IL-1ra) and IL-6, which are negative-feedback inhibitors of cytokine production, increased by more than 100 times. As for humoral mediators of neutrophil mobilization, concentrations of growth hormone (GH), cortisol and granulocyte colony-stimulating factor (G-CSF) increased significantly. In addition, concentrations of neutrophil-priming substances (IL-6, IL-8, G-CSF, GH and prolactin) also increased significantly and the induction of IL-8 and G-CSF with exercise was demonstrated for the first time in the present study. In contrast, IL-2 concentration decreased, by 32%, and this was correlated with the induction of nitric oxide (NO) production. Muscle damage, monitored using changes in concentrations of creatine kinase and myoglobin, was also observed. These results suggested that exercise-induced pathogenesis including previously reported immunosuppression and neutrophil hyper-reactivity might be attributed, at least partly, to the systemic dynamics of the above bioactive substances.

ジャーナルEuropean Journal of Applied Physiology
出版ステータスPublished - 2000 3月

ASJC Scopus subject areas

  • 整形外科およびスポーツ医学
  • 公衆衛生学、環境および労働衛生
  • 生理学(医学)


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