alexa Divergent cytokine response following maximum progressive swimming in hot water.
Molecular Biology

Molecular Biology

Journal of Cytology & Histology

Author(s): CampiAzevedo AC, Cleto LS, Silva RS, SousaFranco Jd, Magalhes JC,

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Abstract Exercise promotes transitory alterations in cytokine secretion, and these changes are affected by exercise duration and intensity. Considering that exercise responses also are affected by environmental factors, the goal of the present study was to investigate the effect of water temperature on the cytokine response to maximum swimming. Swiss mice performed a maximum progressive swimming exercise at 31 or 38°C, and plasma cytokine levels were evaluated immediately or 1, 6 or 24 h after exercise. The cytokine profile after swimming at 31°C was characterized by increased interleukin (IL)-6 and monocyte chemotactic protein-1 (MCP-1) levels, which peaked 1 h after exercise, suggesting an adequate inflammatory milieu to induce muscle regeneration. Transitory reductions in IL-10 and IL-12 levels also were observed after swimming at 31°C. The cytokine response to swimming was modified when the water temperature was increased to 38°C. Although exercise at 38°C also led to IL-6 secretion, the peak in IL-6 production occurred 6 h after exercise, and IL-6 levels were significantly lower than those observed after maximum swimming at 31°C (p = 0·030). Furthermore, MCP-1 levels were lower and tumour necrosis factor-α levels were higher immediately after swimming at 38°C, suggesting a dysregulated pro-inflammatory milieu. These alterations in the cytokine profile can be attributed in part to reduced exercise total work because exhaustion occurred sooner in mice swimming at 38°C than in those swimming at 31°C. Copyright © 2011 John Wiley & Sons, Ltd. This article was published in Cell Biochem Funct and referenced in Journal of Cytology & Histology

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