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Dermal fiber structures and photoaging.

Jimmy Le Digabel1, Sophia Houriez-Gombaud-Saintonge1, Jérôme Filiol1

  • 1Pierre Fabre Dermo Cosmétique, Clinical Research Center, Toulouse, France.

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|September 24, 2018
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Summary

Multiphoton imaging quantifies skin aging by analyzing collagen and elastin fiber changes. This method provides objective indicators for assessing intrinsic and extrinsic skin aging, crucial for dermatological evaluation.

Keywords:
image analysismultiphotonskin aging

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Area of Science:

  • Dermatology
  • Biophysics
  • Medical Imaging

Background:

  • Multiphoton imaging visualizes dermal fibers without staining.
  • Collagen and elastin alterations mark intrinsic and photoaging.
  • Quantitative markers are needed for robust skin aging assessment.

Purpose of the Study:

  • To systematically analyze multiphoton images of skin biopsies.
  • To develop quantitative indicators for evaluating dermis fiber state.
  • To differentiate intrinsic and extrinsic skin aging phenomena.

Main Methods:

  • Analysis of intensity histograms using image moments.
  • Wavelet decomposition of multiphoton images.
  • Fitting wavelet coefficients distribution with a generalized Gaussian distribution.

Main Results:

  • Calculated parameters reflect collagen and elastin density and organization.
  • Identified distinct phenomena related to intrinsic and extrinsic aging.
  • Developed quantitative indicators for skin aging assessment.

Conclusions:

  • Proposed indicators offer a robust method for grading skin aging.
  • Quantitative analysis of multiphoton images can standardize aging assessment.
  • This approach aids in evaluating the effects of intrinsic and extrinsic aging on skin structure.