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Assessment of Glutamine as a Fuel Source for Alveolar Macrophages Exposed to Chronic Ethanol Using an Extracellular Flux Bioanalyzer
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Glutamine supplementation and immune function during heavy load training.

Qing-Hua Song, Rong-Mei Xu, Quan-Hai Zhang

    International Journal of Clinical Pharmacology and Therapeutics
    |March 6, 2015
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    Summary
    This summary is machine-generated.

    Glutamine supplementation may restore immune function in athletes undergoing heavy training. This study found that glutamine reduced the immunosuppressive effects of intense exercise on CD8+ T cells and natural killer cell activity.

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    Area of Science:

    • Immunology
    • Sports Science
    • Nutritional Biochemistry

    Background:

    • Intense athletic training can suppress immune function, increasing susceptibility to infections.
    • Glutamine, an amino acid, plays a crucial role in immune cell function and gut health.
    • The impact of glutamine supplementation on athlete immunity during heavy training requires further investigation.

    Purpose of the Study:

    • To investigate the effect of glutamine supplementation on immune function markers in athletes subjected to heavy load training.
    • To determine if glutamine can mitigate the immunosuppressive effects associated with strenuous physical exertion.

    Main Methods:

    • Twenty-four athletes were randomized into a glutamine (10g/day) or placebo group for 6 weeks of heavy training.
    • Immune markers including CD4+ and CD8+ T cell counts, CD4+/CD8+ ratio, serum IgA, IgG, IgM, and natural killer (NK) cell activity were measured pre- and post-training.
    • Statistical analysis compared changes in immune markers between the experimental and control groups.

    Main Results:

    • The glutamine group showed a significant decrease in CD8+ T cell percentages and a significant increase in the CD4+/CD8+ ratio post-training, unlike the placebo group.
    • Natural killer (NK) cell activity was significantly higher in the glutamine group compared to the placebo group after training.
    • Serum IgA, IgG, and IgM levels did not differ significantly between the groups.

    Conclusions:

    • Glutamine supplementation appears to restore immune function, specifically T cell balance and NK cell activity, in athletes undergoing heavy load training.
    • Glutamine may counteract the immunosuppressive effects induced by strenuous exercise.
    • Further research is warranted to elucidate the precise mechanisms and optimal dosage for glutamine's immunomodulatory effects in athletes.