Pigmentation in African American skin decreases with skin aging.
J Am Acad Dermatol
; 75(4): 782-787, 2016 Oct.
Article
em En
| MEDLINE
| ID: mdl-27318769
ABSTRACT
BACKGROUND:
Tristimulus colorimetry, which uses the Commission Internationale de l'Eclairage L*a*b* model to quantify color, has previously been used to analyze pigmentation and erythema in human skin; however, colorimetry of African American skin is not well characterized.OBJECTIVE:
We sought to analyze skin color patterns in African Americans and compare them with those of Caucasians.METHODS:
Colorimetry readings of the sun-protected buttock and sun-exposed back of forearm were taken from 40 Caucasian and 43 African American participants from March 2011 through August 2015. African American participants also completed a lifestyle questionnaire. Correlation coefficients, paired t tests, and multivariable linear regression analyses were used for statistical comparisons.RESULTS:
Forearm skin was lighter in African Americans ages 65 years and older versus 18 to 30 years (P = .02) but darker in Caucasians ages 65 years or older versus 18 to 30 years (P = .03). In African Americans ages 18 to 30 years, the buttock was darker than the forearm (P < .001), whereas in Caucasians the buttock was lighter than the forearm (P < .001). A lighter forearm than buttock was correlated with supplement use, smoking (ages 18-30 years), and less recreational sun exposure (ages ≥65 years) in African Americans.LIMITATIONS:
Our study was limited by the sample size and focal geographic source.CONCLUSIONS:
Pigmentation patterns regarding sun-protected and sun-exposed areas in African Americans may differ from that of Caucasians, suggesting that other factors may contribute to skin pigmentation in African Americans.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Negro ou Afro-Americano
/
Pigmentação
/
Envelhecimento da Pele
/
Hipopigmentação
/
População Branca
Tipo de estudo:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
/
Aged
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Am Acad Dermatol
Ano de publicação:
2016
Tipo de documento:
Article