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Adrenoceptor status and cardiovascular function in ageing.

K O'Malley1, J R Docherty, J G Kelly

  • 1Department of Clinical Pharmacology, Royal College of Surgeons in Ireland, Dublin.

Journal of Hypertension. Supplement : Official Journal of the International Society of Hypertension
|November 1, 1988
PubMed
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Aging affects adrenoceptor function, particularly beta-adrenoceptors, potentially altering cardiovascular control and reducing the effectiveness of related medications in older adults.

Area of Science:

  • Cardiovascular Physiology
  • Pharmacology
  • Gerontology

Background:

  • Adrenoceptor function is critical for circulatory control and sympathetic nervous system drug responses.
  • Age-related changes in alpha-adrenoceptor function are inconsistent, but vasoconstrictor responses vary with aging.
  • These age-related vascular changes may stem from structural or functional factors, not specific receptor types.

Purpose of the Study:

  • To investigate age-dependent changes in adrenoceptor function.
  • To explore the impact of aging on cardiovascular control and drug efficacy.
  • To examine alterations in beta-adrenoceptor system components with increasing age.

Main Methods:

  • Review of existing evidence on adrenoceptor function and aging.

Related Experiment Videos

  • Analysis of studies examining alpha- and beta-adrenoceptor responses in different age groups.
  • Evaluation of factors influencing receptor affinity and signaling pathways.

    • Main Results:

    • Limited consistent evidence for age-dependent changes in alpha-adrenoceptor function.
    • Observed changes in response to vasoconstrictor agents with aging.
    • Evidence suggests decreased beta-adrenoceptor response and altered system functioning, including reduced receptor affinity, in older individuals.

    Conclusions:

    • Decreased beta-adrenoceptor function with aging may contribute to altered cardiovascular regulation.
    • Age-related changes in adrenoceptor function could impact the efficacy of beta-adrenoceptor blocking drugs in elderly hypertensive patients.