[MC1R polymorphisms and facial photoaging].
Ann Dermatol Venereol 2011;
138:385-9. [PMID:
21570562 DOI:
10.1016/j.annder.2011.02.026]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Revised: 02/02/2011] [Accepted: 02/21/2011] [Indexed: 11/13/2022]
Abstract
BACKGROUND
The objective of this study was to assess the association between melanocortin-1 receptor (MC1R) variants and the severity of facial skin photoaging.
METHODS
The study population comprised 530 French middle-aged women between 44 and 70 years. A trained dermatologist graded the severity of facial skin photoaging from photographs using Larnier's global scale. Logistic regressions were performed to assess the influence of MC1R polymorphism on severe photoaging (grades 1-3 vs. 4-6), with adjustment for possible confounders (demographic and phenotypic data, and sun exposure intensity).
RESULTS
Overall, 35% of the women were wild-type homozygotes, 49% had one variant, 15% had two variants, and 1% had at least one rare variant. After adjustment for possible confounders, the presence of two major diminished function variants was found to be a risk factor for photoaging (adjusted odds ratio=5.61; 95% confidence interval [1.43-21.96]).
DISCUSSION
Our results suggest that genetic variations of MC1R are important determinants for severe photoaging.
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