Plasma Retinoids after Topical Use of Retinaldehyde on Human Skin
作者:
J.O. Sass,
E. Masgrau,
P.A. Piletta,
H. Nau,
J.-H. Saurat,
期刊:
Skin Pharmacology and Physiology
(Karger Available online 1996)
卷期:
Volume 9,
issue 5
页码: 322-326
ISSN:1660-5527
年代: 1996
DOI:10.1159/000211436
出版商: S. Karger AG
关键词: Retinoid metabolites;Retinaldehyde
数据来源: Karger
摘要:
Background: Retinaldehyde (RAL), a natural metabolite of β-carotene and retinol (ROL), is tolerated by human skin after topical application. Purpose: To see if topical application of a large quantity of RAL on human skin is associated with a detectable alteration of constitutive levels of plasma retinoids resulting from metabolism of RAL in the skin. Methods: Plasma retinoids [ROL, all-trans-retinoic acid (all-trans-RA), RAL, retinyl palmitate/oleate, 13-cis-RA and 4-oxo-13-cis-RA] were analyzed by high-pressure liquid chromatography. Determinations were done in 10 healthy male volunteers kept on a vitam-A-poor diet before, during and after daily topical application of 7 mg of RAL to 40% of the body surface for 14 days. Results: The introduction of a restricted vitamin A diet before RAL application resulted in a decrease in the plasma levels of ROL, all-trans-RA and retinyl palmitate/oleate. Topical application of RAL did not induce an alteration of the plasma levels of retinoid metabolites. No RAL was detectable in any of the plasma samples. Conclusion: The skin metabolism of topically applied RAL does not result in detectable alterations of constitutive levels of plasma retinoids in humans
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