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Skin thickness changes in normal aging skin.

M C Branchet1, S Boisnic, C Frances

  • 1Laboratoire de Biochimie du Tissu Conjonctif, UA CNRS 1174, Faculté de Médecine, Université Paris XII, Créteil, France.

Gerontology
|January 1, 1990
PubMed
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Skin aging causes a decrease in skin thickness, with epidermis thinning faster in men than women. Dermal thickness reduction is similar in both sexes, highlighting age-related skin changes.

Area of Science:

  • Dermatology
  • Gerontology
  • Anatomy

Background:

  • Skin thickness naturally decreases with age.
  • Understanding age-related skin changes is crucial for dermatology and gerontology.
  • Previous studies have used physical measurements, which may have limitations.

Purpose of the Study:

  • To investigate the age-dependent decrease in skin thickness using morphometric analysis.
  • To compare the rate of skin thinning between men and women.
  • To analyze the changes in epidermal and dermal thickness with aging.

Main Methods:

  • Morphometric analysis of upper inner arm skin biopsies.
  • Quantification of epidermal and dermal thickness.
  • Evaluation of the superficial dermal layer's age-related changes.

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Main Results:

  • Epidermal thickness decreased faster in men (7.2%/decade) than women (5.7%/decade).
  • Total dermal thickness decreased at a similar rate (6%/decade) in both sexes.
  • Superficial dermis showed biphasic age-related changes, with no significant sex differences due to high individual variability.

Conclusions:

  • Morphometric analysis provides detailed insights into age-related skin thinning.
  • Differences in epidermal thinning rates exist between sexes.
  • Fixation artifacts and measurement overestimation may explain discrepancies with physical measurements.