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The decrease in noradrenaline concentration in the posterior tibial artery with age.

B Neubauer, N J Christensen

    Gerontology
    |January 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

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    This study measured noradrenaline and adrenaline in posterior tibial arteries. Arterial noradrenaline significantly decreases with age in both sexes, with no sex-based differences in concentration.

    Area of Science:

    • Neuroscience
    • Vascular Biology
    • Pharmacology

    Background:

    • Noradrenaline and adrenaline are key neurotransmitters and hormones involved in vascular regulation.
    • Understanding their concentrations in peripheral arteries is crucial for cardiovascular research.

    Purpose of the Study:

    • To quantify noradrenaline and adrenaline levels in the posterior tibial artery.
    • To investigate potential differences in concentrations based on sex and age.

    Main Methods:

    • Postmortem analysis of posterior tibial artery specimens from 18 subjects.
    • Measurement of noradrenaline and adrenaline concentrations using biochemical assays.

    Main Results:

    • Mean noradrenaline concentration was 167 ng/g (range 17-449 ng/g); mean adrenaline was 5 ng/g (range 0-21 ng/g).

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  • No significant sex-based differences in catecholamine concentrations (ng/g).
  • Arterial noradrenaline concentration showed a significant decrease with increasing age in both males and females.

    • Conclusions:

    • Age is a significant factor influencing noradrenaline levels in the posterior tibial artery.
    • The findings contribute to understanding age-related changes in vascular adrenergic function.