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Aging and proinflammatory cytokines.

H Bruunsgaard1, M Pedersen, B K Pedersen

  • 1Department of Infectious Diseases, H:S, Rigshospitalet, University of Copenhagen, Denmark.

Current Opinion in Hematology
|April 17, 2001
PubMed
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Aging increases inflammation, impacting health and mortality risk. While the acute phase response is altered in older adults, its direct link to infection mortality needs further study.

Area of Science:

  • Gerontology
  • Immunology
  • Inflammation research

Background:

  • Aging is linked to heightened inflammatory activity, indicated by elevated levels of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and acute phase proteins.
  • Chronic low-grade inflammation in aging is associated with an atherogenic profile and increased risk of age-related diseases like Alzheimer's, atherosclerosis, and type 2 diabetes.
  • Dysregulated inflammatory cytokine production plays a significant role in the aging process.

Purpose of the Study:

  • To investigate the role of dysregulated inflammatory cytokine production in aging.
  • To explore age-related differences in inflammatory responses.
  • To examine the alteration of the acute phase response in aging.

Main Methods:

  • Review of epidemiologic studies on inflammation and aging.

Related Experiment Videos

  • Analysis of in vitro studies on age-related cytokine production.
  • Examination of in vivo infectious models in elderly humans.

    • Main Results:

    • Epidemiologic data links chronic inflammation in aging to adverse health outcomes and mortality.
    • In vitro studies show inconsistent results regarding age-related cytokine production.
    • In vivo models demonstrate delayed inflammatory termination and prolonged fever in the elderly, indicating an altered acute phase response.

    Conclusions:

    • Aging is characterized by increased inflammatory activity and altered acute phase responses.
    • While inflammation is implicated in aging and associated disorders, a direct causal link between the acute phase response and mortality from bacterial infections in older adults requires further investigation.