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Some aspects of cellular aging.

S Goldstein, C B Harley, E J Moerman

    Journal of Chronic Diseases
    |January 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Human fibroblast aging is linked to donor age and genetic disorders, with limited cell division capacity. Impaired hormone response in aging cells suggests altered gene expression, impacting tissue health.

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    Area of Science:

    • Cell Biology
    • Gerontology
    • Genetics

    Background:

    • Cultured human fibroblasts are key models for studying aging.
    • Age-dependent diseases are a significant concern in human health.
    • Understanding cellular aging mechanisms is crucial for disease prevention.

    Purpose of the Study:

    • To investigate the biology of aging using cultured human fibroblasts.
    • To explore the origins of age-dependent diseases at the cellular level.
    • To analyze the impact of genetic disorders on cellular aging.

    Main Methods:

    • Culturing human fibroblasts from donors of varying ages.
    • Utilizing circular outgrowths to study cell division limits.
    • Assessing hormone response and cyclic AMP levels in fibroblasts.

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    Main Results:

    • Replicative lifespan inversely correlated with donor age.
    • Fibroblasts from progeria and Werner syndrome showed impaired growth.
    • Progeria cells exhibited decreased insulin-like hormone response.
    • Aging fibroblasts displayed altered cyclic AMP responses to hormonal stimulation.

    Conclusions:

    • Cultured human fibroblasts effectively model biological aging.
    • Cellular aging involves a limited mitotic counter and altered gene expression.
    • This model explains age-related decline in tissue cellularity and responsiveness.