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Related Experiment Videos

Twenty-four-hour beta-endorphin secretory pattern in the elderly.

E Rolandi, R Franceschini, A Marabini

    Acta Endocrinologica
    |August 1, 1987
    PubMed
    Summary

    Elderly men lose their 24-hour beta-endorphin rhythm, though levels remain similar to younger adults. This study highlights age-related changes in hormonal patterns and their correlations.

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    Area of Science:

    • Chronobiology
    • Endocrinology
    • Gerontology

    Background:

    • Age-related changes in neuroendocrine function are significant.
    • Beta-endorphin plays a role in stress response and mood regulation.
    • Understanding circadian rhythms is crucial for health in aging populations.

    Purpose of the Study:

    • To investigate the 24-hour secretory pattern of beta-endorphin in elderly males.
    • To compare the circadian rhythm of beta-endorphin in elderly and young adult males.
    • To examine the relationship between beta-endorphin, ACTH, and cortisol in elderly males.

    Main Methods:

    • Chronobiological study involving elderly (78-84 years) and young adult (28-37 years) male subjects.
    • Blood samples collected at regular intervals over 24 hours.

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  • Plasma levels of beta-endorphin, ACTH, and cortisol were measured.

    • Main Results:

    • Mean 24-hour beta-endorphin levels did not differ statistically between elderly and young adult males.
    • Circadian rhythm of beta-endorphin was absent in elderly subjects.
    • Elderly subjects showed circadian rhythms for ACTH and cortisol, but no significant correlation between beta-endorphin, ACTH, and cortisol.

    Conclusions:

    • Elderly males exhibit an absence of the normal 24-hour beta-endorphin secretory rhythm.
    • While ACTH and cortisol maintain circadian patterns, their correlation with beta-endorphin is lost with aging.
    • These findings suggest a specific age-related disruption in beta-endorphin regulation.