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Aging, immune function, and exercise: hormonal regulation.

R S Mazzeo1

  • 1Department of Kinesiology & Applied Physiology, University of Colorado, Boulder 80309, USA. mazzeo@spot.colorado.edu

International Journal of Sports Medicine
|July 13, 2000
PubMed
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Aging impairs immune function, increasing disease risk and mortality. Neuroendocrine changes, like altered hormone levels and receptor function, significantly impact immune responses in older adults, especially after exercise.

Area of Science:

  • Immunology
  • Neuroendocrinology
  • Gerontology

Background:

  • Aging is associated with a decline in immune function, termed immunosenescence.
  • This immune dysfunction increases susceptibility to infections, cancer, and autoimmune diseases.
  • Neuroendocrine system alterations are key contributors to age-related immune decline.

Purpose of the Study:

  • To review age-related changes in the neuroendocrine system.
  • To examine how these changes affect immune function at rest and during exercise.
  • To highlight the role of specific neuroendocrine factors in immunosenescence.

Main Methods:

  • Review of existing literature on aging, neuroendocrinology, and immunology.
  • Focus on age-associated changes in growth hormone, IGF-I, sympathetic activity, catecholamines, and gonadal steroids.

Related Experiment Videos

  • Analysis of how these neuroendocrine alterations modulate immune responses.

    • Main Results:

    • Aging impacts hormone synthesis, receptor function, and signaling pathways.
    • Specific neuroendocrine factors like growth hormone, IGF-I, and catecholamines show altered profiles in older individuals.
    • These changes influence immune cell function and responsiveness.

    Conclusions:

    • Age-related neuroendocrine alterations significantly modulate immune function.
    • Older adults exhibit distinct immune responses to exercise due to these changes.
    • Understanding these interactions is crucial for addressing age-related health issues.