Ute Jacobi1, Julien Gautier, Wolfram Sterry, Jürgen Lademann. 1. Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Medical Faculty, Charité, Berlin, Germany. ute.jacobi@charite.de
Abstract
BACKGROUND: Only few studies on gender-related differences in skin physiology have been performed--and they provided conflicting results. OBJECTIVE: In the present study, the effect of gender on the physiology of the stratum corneum was studied. METHODS: The physiological parameters transepidermal water loss, pH value, hydration and sebum content were determined on the flexor forearms of 6 female and 6 male volunteers. In addition, stratum corneum samples, removed by tape stripping, were studied for amount, spectroscopic properties, protein content, and mass. RESULTS: The skin of women was characterized by a significantly higher pH value (5.6 +/- 0.4) than that of men (4.3 +/- 0.4, p < 0.05). Protein absorption was the only other parameter significantly dependent on gender (p < 0.05). Both effects might be caused by differences in human biology, such as hormonal status. CONCLUSION: Therefore, the gender of the volunteers should be considered in dermatologic studies. Copyright 2005 S. Karger AG, Basel.
BACKGROUND: Only few studies on gender-related differences in skin physiology have been performed--and they provided conflicting results. OBJECTIVE: In the present study, the effect of gender on the physiology of the stratum corneum was studied. METHODS: The physiological parameters transepidermal water loss, pH value, hydration and sebum content were determined on the flexor forearms of 6 female and 6 male volunteers. In addition, stratum corneum samples, removed by tape stripping, were studied for amount, spectroscopic properties, protein content, and mass. RESULTS: The skin of women was characterized by a significantly higher pH value (5.6 +/- 0.4) than that of men (4.3 +/- 0.4, p < 0.05). Protein absorption was the only other parameter significantly dependent on gender (p < 0.05). Both effects might be caused by differences in human biology, such as hormonal status. CONCLUSION: Therefore, the gender of the volunteers should be considered in dermatologic studies. Copyright 2005 S. Karger AG, Basel.
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