Epidermal p53 response and repair of thymine dimers in human skin after a single dose of ultraviolet radiation: effects of photoprotection.

2.50
Hdl Handle:
http://hdl.handle.net/10541/85715
Title:
Epidermal p53 response and repair of thymine dimers in human skin after a single dose of ultraviolet radiation: effects of photoprotection.
Authors:
Ling, Gao; Chadwick, Caroline A; Berne, Berit; Potten, Christopher S; Pontén, Jan; Pontén, Fredrik
Abstract:
A cellular p53 response, DNA repair enzymes and melanin pigmentation are important strategies utilized by skin keratinocytes against impairment caused by ultraviolet radiation (UVR). In this study a double-immunofluorescence technique was used to investigate UVR-induced thymine dimers and p53 protein simultaneously. Four healthy volunteers were irradiated on both sides of their buttock skin with a single dose of solar-simulating UVR. One side was pretreated with a topical sunscreen. Biopsies from different time-points were immunostained for visualization of thymine dimers, p53 and proliferation. One single physiological dose of UVR generated widespread formation of thymine dimers throughout the epidermis 4h after irradiation. The level of thymine dimers decreased over time and was followed by a p53 response in the same cells. A late proliferative response was also found. The formation of thymine dimers, the p53 response and the late proliferative response were partially blocked by topical sunscreen. Large inter-individual differences in the kinetics of thymine dimer formation and repair as well as in the p53 response were evident in both sunscreen-protected and unprotected skin.
Affiliation:
Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala, Sweden. Gao.Ling@genpat.uu.se
Citation:
Epidermal p53 response and repair of thymine dimers in human skin after a single dose of ultraviolet radiation: effects of photoprotection. 2001, 81 (2):81-6 Acta Derm. Venereol.
Journal:
Acta Dermato-Venereologica
Issue Date:
May-2001
URI:
http://hdl.handle.net/10541/85715
PubMed ID:
11501666
Type:
Article
Language:
en
ISSN:
0001-5555
Appears in Collections:
All Paterson Institute for Cancer Research

Full metadata record

DC FieldValue Language
dc.contributor.authorLing, Gaoen
dc.contributor.authorChadwick, Caroline Aen
dc.contributor.authorBerne, Beriten
dc.contributor.authorPotten, Christopher Sen
dc.contributor.authorPontén, Janen
dc.contributor.authorPontén, Fredriken
dc.date.accessioned2009-11-10T09:24:49Z-
dc.date.available2009-11-10T09:24:49Z-
dc.date.issued2001-05-
dc.identifier.citationEpidermal p53 response and repair of thymine dimers in human skin after a single dose of ultraviolet radiation: effects of photoprotection. 2001, 81 (2):81-6 Acta Derm. Venereol.en
dc.identifier.issn0001-5555-
dc.identifier.pmid11501666-
dc.identifier.urihttp://hdl.handle.net/10541/85715-
dc.description.abstractA cellular p53 response, DNA repair enzymes and melanin pigmentation are important strategies utilized by skin keratinocytes against impairment caused by ultraviolet radiation (UVR). In this study a double-immunofluorescence technique was used to investigate UVR-induced thymine dimers and p53 protein simultaneously. Four healthy volunteers were irradiated on both sides of their buttock skin with a single dose of solar-simulating UVR. One side was pretreated with a topical sunscreen. Biopsies from different time-points were immunostained for visualization of thymine dimers, p53 and proliferation. One single physiological dose of UVR generated widespread formation of thymine dimers throughout the epidermis 4h after irradiation. The level of thymine dimers decreased over time and was followed by a p53 response in the same cells. A late proliferative response was also found. The formation of thymine dimers, the p53 response and the late proliferative response were partially blocked by topical sunscreen. Large inter-individual differences in the kinetics of thymine dimer formation and repair as well as in the p53 response were evident in both sunscreen-protected and unprotected skin.en
dc.language.isoenen
dc.subjectTumour Suppressor Protein p53en
dc.subject.meshAdult-
dc.subject.meshAged-
dc.subject.meshDNA-
dc.subject.meshDNA Damage-
dc.subject.meshDNA Ligases-
dc.subject.meshFemale-
dc.subject.meshFluorescent Antibody Technique-
dc.subject.meshHumans-
dc.subject.meshKeratinocytes-
dc.subject.meshMale-
dc.subject.meshMelanins-
dc.subject.meshMiddle Aged-
dc.subject.meshPyrimidine Dimers-
dc.subject.meshSkin-
dc.subject.meshSunscreening Agents-
dc.subject.meshTumor Suppressor Protein p53-
dc.subject.meshUltraviolet Rays-
dc.titleEpidermal p53 response and repair of thymine dimers in human skin after a single dose of ultraviolet radiation: effects of photoprotection.en
dc.typeArticleen
dc.contributor.departmentDepartment of Genetics and Pathology, Rudbeck Laboratory, Uppsala, Sweden. Gao.Ling@genpat.uu.seen
dc.identifier.journalActa Dermato-Venereologicaen

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