A population-based study of the stratum corneum moisture
Authors Pires T, Azambuja AP, Horimoto A, Veroneze M, Alvim R, Krieger JE, Pereira A
Received 13 May 2015
Accepted for publication 30 November 2015
Published 18 April 2016 Volume 2016:9 Pages 79—87
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 2
Editor who approved publication: Dr Jeffrey Weinberg
Thiago de Farias Pires,1 Ana Paula Azambuja,2 Andrea Roseli Vançan Russo Horimoto,1 Mary Sanae Nakamura,2 Rafael de Oliveira Alvim,1 José Eduardo Krieger,1 Alexandre Costa Pereira1
1Laboratory of Genetics and Molecular Cardiology, Heart Institute, University of São Paulo Medical School, 2Natura Innovation and Product Technology Ltd., Cajamar, SP, Brazil
Background: The stratum corneum (SC) has important functions as a bound-water modulator and a primary barrier of the human skin from the external environment. However, no large epidemiological study has quantified the relative importance of different exposures with regard to these functional properties. In this study, we have studied a large sample of individuals from the Brazilian population in order to understand the different relationships between the properties of SC and a number of demographic and self-perceived variables.
Methods: One thousand three hundred and thirty-nine individuals from a rural Brazilian population, who were participants of a family-based study, were submitted to a cross-sectional examination of the SC moisture by capacitance using the Corneometer® CM820 and investigated regarding environmental exposures, cosmetic use, and other physiological and epidemiological measurements. Self-perception-scaled questions about skin conditions were also applied.
Results: We found significant associations between SC moisture and sex, age, high sun exposure, and sunscreen use frequency (P<0.025). In specific studied sites, self-reported race and obesity were also found to show significant effects. Dry skin self-perception was also found to be highly correlated with the objective measurement of the skin. Other environmental effects on SC moisture are also reported.
Keywords: investigative dermatology, stratum corneum moisture, Corneometer, sun exposure, familial data modeling
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