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Thyroid autoimmunity and aging

S Mariotti1, L Chiovato, C Franceschi

  • 1Department of Medical Sciences, University of Cagliari, Italy.

Experimental Gerontology
|October 28, 1998
PubMed
Summary
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Thyroid autoantibodies are common in the elderly but not necessarily due to aging. Their presence may indicate age-associated diseases rather than being a direct consequence of the aging process itself.

Area of Science:

  • Immunology
  • Gerontology
  • Endocrinology

Background:

  • Aging is linked to increased serum autoantibodies, including thyroid autoantibodies.
  • The clinical significance of these thyroid autoantibodies in aging remains unclear.
  • Overt thyroid autoimmune diseases are not more prevalent in the elderly, except for primary myxedema.

Purpose of the Study:

  • To investigate the relationship between thyroid autoantibodies and aging.
  • To explore the association of thyroid autoimmunity with subclinical hypothyroidism and age-associated disorders.
  • To determine if thyroid autoimmune phenomena are a consequence of aging or age-associated diseases.

Main Methods:

  • Analysis of serum thyroid autoantibodies in various elderly populations.

Related Experiment Videos

  • Comparison of autoantibody prevalence in healthy centenarians versus unselected or hospitalized elderly individuals.
  • Evaluation of the link between thyroid autoimmunity, subclinical hypothyroidism, and coronary heart disease.

    • Main Results:

    • Thyroid autoantibodies are frequently found in unselected or hospitalized elderly individuals.
    • In contrast, thyroid autoantibodies are rare in healthy centenarians and other highly selected aged groups.
    • A high prevalence of subclinical hypothyroidism is observed in elderly subjects with positive thyroid autoantibodies.

    Conclusions:

    • Thyroid autoimmune phenomena are not a direct result of the aging process.
    • The presence of thyroid autoantibodies in the elderly may be associated with underlying age-associated diseases.
    • Further research is needed to elucidate the precise role of thyroid autoimmunity in aging and related conditions.