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Letter to the Editor| Volume 50, ISSUE 1, P69-72, April 2008

Topical treatment with (−)-epigallocatechin-3-gallate and genistein after a single UV exposure can reduce skin damage

  • R.M. Brand
    Correspondence
    Corresponding author at: Department of Dermatology, University of Pittsburgh Medical Center, 190 Lothrop Street, 145 Lothrop Hall, Pittsburgh, PA 15213, United States. Tel.: +1 412 648 3399; fax: +1 412 648 9731.
    Affiliations
    Department of Dermatology and Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
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  • J.L. Jendrzejewski
    Affiliations
    Department of Internal Medicine, Evanston Northwestern Healthcare, Evanston, IL, United States
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      The best method to reduce skin cancer risk is preventing intensive sunlight exposure through lifestyle modification (protective clothing, avoidance) and sunscreen application. However, many individuals do not follow these measures and become sunburned. Unfortunately, sunscreens are not effective once damage has occurred [
      • Stege H.
      • Roza L.
      • Vink A.A.
      • et al.
      Enzyme plus light therapy to repair DNA damage in ultraviolet-B-irradiated human skin.
      ]. Compounds that reverse skin trauma after UV exposure are therefore necessary to supplement sunscreen use, as a second line of defense. A post-exposure product should reduce DNA damage [
      • Ouhtit A.
      • Muller H.K.
      • Davis D.W.
      • et al.
      Temporal events in skin injury and the early adaptive responses in ultraviolet-irradiated mouse skin.
      ], inflammation and immune suppression [
      • Clydesdale G.J.
      • Dandie G.W.
      • Muller H.K.
      Ultraviolet light induced injury: immunological and inflammatory effects.
      ], as well as prevent alterations in intercellular adhesion proteins, such as E-cadherin, which disrupt skin homeostasis and are associated with skin cancer development and progression [
      • Hung C.F.
      • Chiang H.S.
      • Lo H.M.
      • et al.
      E-cadherin and its downstream catenins are proteolytically cleaved in human HaCaT keratinocytes exposed to UVB.
      ,
      • Johnson J.P.
      Cell adhesion molecules in the development and progression of malignant melanoma.
      ].

      Keywords

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      References

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        Ultraviolet light induced injury: immunological and inflammatory effects.
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        E-cadherin and its downstream catenins are proteolytically cleaved in human HaCaT keratinocytes exposed to UVB.
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        Cell adhesion molecules in the development and progression of malignant melanoma.
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