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Topical formulation engendered alteration in p53 and cyclobutane pyrimidine dimer expression in chronic photodamaged

James M Spencer1, Michael B Morgan, Kara M Trapp

  • 1Department of Dermatology, Mount Sinai School of Medicine, New York, NY, USA.

Journal of Drugs in Dermatology : JDD
|April 3, 2013
PubMed

Insights

This study investigated a DNA recovery serum

Area of Science:

  • Dermatology
  • Molecular Biology
  • Genetics

Background:

  • Photoaging's clinical signs are known, but its molecular mechanisms remain unclear.
  • Ultraviolet (UV) radiation causes DNA damage, and the p53 protein plays a role in DNA repair.
  • This repair mechanism is crucial in xeroderma pigmentosum (XP) and may be involved in typical photoaging.

Purpose of the Study:

  • To investigate the effects of a topical DNA recovery serum on molecular markers of photoaging.
  • To quantitatively measure changes in p53 activity and UV-induced DNA damage (cyclobutane pyrimidine dimers - CPDs) after serum application.

Main Methods:

  • An 8-week, open-label study involving 20 volunteers.
  • Topical application of a proprietary DNA recovery serum.
  • Quantitative measurement of p53 levels and CPDs using immunohistochemistry before and after treatment.

Main Results:

  • A statistically significant reduction in both p53 levels and CPDs was observed.
  • Immunohistochemical analysis confirmed these molecular changes.

Conclusions:

  • Preliminary findings suggest a topical DNA recovery serum may reverse molecular photodamage.
  • The results support the potential for clinical improvement in photoaging effects.

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