Endogenous Phospholipid Metabolite Containing Topical Product Inhibits Ultraviolet Light-Induced Inflammation and DNA Damage in Human Skin

Background: N-palmitoylethanolamine (PEA) and organic osmolytes are endogenous components of the human epidermis and are generated from phospholipids in the stratum granulosum. PEA has been shown to exert potent antioxidant and anti-inflammatory activities. The endogenous organic osmolytes such as b...

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Veröffentlicht in:Skin pharmacology and physiology 2007-01, Vol.20 (3), p.155-161
Hauptverfasser: Kemeny, L., Koreck, A., Kis, K., Kenderessy-Szabo, A., Bodai, L., Cimpean, A., Paunescu, V., Raica, M., Ghyczy, M.
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container_end_page 161
container_issue 3
container_start_page 155
container_title Skin pharmacology and physiology
container_volume 20
creator Kemeny, L.
Koreck, A.
Kis, K.
Kenderessy-Szabo, A.
Bodai, L.
Cimpean, A.
Paunescu, V.
Raica, M.
Ghyczy, M.
description Background: N-palmitoylethanolamine (PEA) and organic osmolytes are endogenous components of the human epidermis and are generated from phospholipids in the stratum granulosum. PEA has been shown to exert potent antioxidant and anti-inflammatory activities. The endogenous organic osmolytes such as betaine and sarcosine control skin humidity, but have also been shown to inhibit ultraviolet (UV) light-induced oxidative stress in keratinocytes. Objectives: To investigate the effect of a PEA- and organic osmolyte-containing topical product (Physiogel AI®) on the development of UV light-induced erythema, thymine dimer formation and p53 tumor suppressor gene activation, as well as intercellular adhesion molecule 1 (ICAM-1) and Ki67 expression in normal human skin. Methods: The UV-induced erythema was measured by a spectrofluorometric method. Thymine dimers, p53, ICAM-1 and Ki67 were detected in skin biopsies using immunohistochemistry. Results: Physiogel AI cream significantly inhibited the development of UV light-induced erythema and thymine dimer formation in normal human skin, but did not alter the number of Ki67+ proliferating keratinocytes and the expression of p53 and ICAM-1. Conclusions: Our results suggest that PEA and organic osmolytes might represent a new generation of compounds which suppress UV-induced photodamage.
doi_str_mv 10.1159/000098702
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PEA has been shown to exert potent antioxidant and anti-inflammatory activities. The endogenous organic osmolytes such as betaine and sarcosine control skin humidity, but have also been shown to inhibit ultraviolet (UV) light-induced oxidative stress in keratinocytes. Objectives: To investigate the effect of a PEA- and organic osmolyte-containing topical product (Physiogel AI®) on the development of UV light-induced erythema, thymine dimer formation and p53 tumor suppressor gene activation, as well as intercellular adhesion molecule 1 (ICAM-1) and Ki67 expression in normal human skin. Methods: The UV-induced erythema was measured by a spectrofluorometric method. Thymine dimers, p53, ICAM-1 and Ki67 were detected in skin biopsies using immunohistochemistry. Results: Physiogel AI cream significantly inhibited the development of UV light-induced erythema and thymine dimer formation in normal human skin, but did not alter the number of Ki67+ proliferating keratinocytes and the expression of p53 and ICAM-1. Conclusions: Our results suggest that PEA and organic osmolytes might represent a new generation of compounds which suppress UV-induced photodamage.</description><identifier>ISSN: 1660-5527</identifier><identifier>EISSN: 1660-5535</identifier><identifier>DOI: 10.1159/000098702</identifier><identifier>PMID: 17230055</identifier><language>eng</language><publisher>Basel, Switzerland: S. Karger AG</publisher><subject><![CDATA[Administration, Cutaneous ; Adult ; Betaine - administration & dosage ; Betaine - chemistry ; Betaine - therapeutic use ; Chemistry, Pharmaceutical ; DNA - drug effects ; DNA - radiation effects ; DNA Damage ; Dose-Response Relationship, Radiation ; Drug Combinations ; Endocannabinoids ; Erythema - etiology ; Erythema - metabolism ; Erythema - prevention & control ; Ethanolamines ; Gels ; Humans ; Original Paper ; Palmitic Acids - administration & dosage ; Palmitic Acids - chemistry ; Palmitic Acids - therapeutic use ; Pyrimidine Dimers - metabolism ; Radiodermatitis - etiology ; Radiodermatitis - metabolism ; Radiodermatitis - prevention & control ; Sarcosine - administration & dosage ; Sarcosine - chemistry ; Sarcosine - therapeutic use ; Skin - drug effects ; Skin - metabolism ; Skin - radiation effects ; Sunscreening Agents - administration & dosage ; Sunscreening Agents - chemistry ; Sunscreening Agents - therapeutic use ; Treatment Outcome ; Ultraviolet Rays - adverse effects]]></subject><ispartof>Skin pharmacology and physiology, 2007-01, Vol.20 (3), p.155-161</ispartof><rights>2007 S. Karger AG, Basel</rights><rights>Copyright (c) 2007 S. Karger AG, Basel.</rights><rights>Copyright (c) 2007 S. 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PEA has been shown to exert potent antioxidant and anti-inflammatory activities. The endogenous organic osmolytes such as betaine and sarcosine control skin humidity, but have also been shown to inhibit ultraviolet (UV) light-induced oxidative stress in keratinocytes. Objectives: To investigate the effect of a PEA- and organic osmolyte-containing topical product (Physiogel AI®) on the development of UV light-induced erythema, thymine dimer formation and p53 tumor suppressor gene activation, as well as intercellular adhesion molecule 1 (ICAM-1) and Ki67 expression in normal human skin. Methods: The UV-induced erythema was measured by a spectrofluorometric method. Thymine dimers, p53, ICAM-1 and Ki67 were detected in skin biopsies using immunohistochemistry. 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PEA has been shown to exert potent antioxidant and anti-inflammatory activities. The endogenous organic osmolytes such as betaine and sarcosine control skin humidity, but have also been shown to inhibit ultraviolet (UV) light-induced oxidative stress in keratinocytes. Objectives: To investigate the effect of a PEA- and organic osmolyte-containing topical product (Physiogel AI®) on the development of UV light-induced erythema, thymine dimer formation and p53 tumor suppressor gene activation, as well as intercellular adhesion molecule 1 (ICAM-1) and Ki67 expression in normal human skin. Methods: The UV-induced erythema was measured by a spectrofluorometric method. Thymine dimers, p53, ICAM-1 and Ki67 were detected in skin biopsies using immunohistochemistry. Results: Physiogel AI cream significantly inhibited the development of UV light-induced erythema and thymine dimer formation in normal human skin, but did not alter the number of Ki67+ proliferating keratinocytes and the expression of p53 and ICAM-1. Conclusions: Our results suggest that PEA and organic osmolytes might represent a new generation of compounds which suppress UV-induced photodamage.</abstract><cop>Basel, Switzerland</cop><pub>S. Karger AG</pub><pmid>17230055</pmid><doi>10.1159/000098702</doi><tpages>7</tpages></addata></record>
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subjects Administration, Cutaneous
Adult
Betaine - administration & dosage
Betaine - chemistry
Betaine - therapeutic use
Chemistry, Pharmaceutical
DNA - drug effects
DNA - radiation effects
DNA Damage
Dose-Response Relationship, Radiation
Drug Combinations
Endocannabinoids
Erythema - etiology
Erythema - metabolism
Erythema - prevention & control
Ethanolamines
Gels
Humans
Original Paper
Palmitic Acids - administration & dosage
Palmitic Acids - chemistry
Palmitic Acids - therapeutic use
Pyrimidine Dimers - metabolism
Radiodermatitis - etiology
Radiodermatitis - metabolism
Radiodermatitis - prevention & control
Sarcosine - administration & dosage
Sarcosine - chemistry
Sarcosine - therapeutic use
Skin - drug effects
Skin - metabolism
Skin - radiation effects
Sunscreening Agents - administration & dosage
Sunscreening Agents - chemistry
Sunscreening Agents - therapeutic use
Treatment Outcome
Ultraviolet Rays - adverse effects
title Endogenous Phospholipid Metabolite Containing Topical Product Inhibits Ultraviolet Light-Induced Inflammation and DNA Damage in Human Skin
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