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[Does lifestyle modulate natural killer cell activities?].

Y Kusaka1, K Morimoto

  • 1Department of Hygiene and Preventive Medicine, School of Medicine, Osaka University.

Nihon Eiseigaku Zasshi. Japanese Journal of Hygiene
|February 1, 1992
PubMed
Summary
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Lifestyle factors significantly influence natural killer (NK) cell activity, impacting tumor defense. Exercise enhances NK cell function, while smoking and certain diets may reduce it.

Area of Science:

  • Immunology
  • Cell Biology

Context:

  • Natural killer (NK) cells are vital for innate immunity and tumor surveillance.
  • Assessing NK cell activity typically involves chromium release assays and surface phenotype analysis.

Purpose:

  • To review the associations between demographic characteristics, lifestyle factors, and NK cell activity.
  • To clarify the influence of age, sex, smoking, diet, exercise, and psychological factors on NK cell function.

Summary:

  • NK cell activity shows complex age-dependencies, with some studies suggesting increases with aging.
  • Male sex and elevated CD16+ (Leu11+) NK cell subsets correlate with higher NK cell activity.
  • Smoking cessation boosts NK cell activity, whereas polyunsaturated fatty acids may lower it. Physical exercise significantly enhances NK cell activity and numbers.

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Impact:

  • Understanding these associations can inform strategies to modulate NK cell function for therapeutic benefit.
  • Highlights the modifiable nature of NK cell activity through lifestyle interventions.