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Free Radical Biology and Medicine
Article . 2014 . Peer-reviewed
License: Elsevier TDM
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Resveratrol protects SR-B1 levels in keratinocytes exposed to cigarette smoke

Authors: STICOZZI, Claudia; G. Belmonte; CERVELLATI, Franco; MURESAN, Ximena Maria; F. Pessina; Y. Lim; H. J. Forman; +1 Authors

Resveratrol protects SR-B1 levels in keratinocytes exposed to cigarette smoke

Abstract

Cigarette smoking (CS) has been strongly linked to several health conditions including heart disease, lung cancer, and other respiratory and circulatory ailments. Deleterious effects of cigarette smoking on skin have also been well documented, but unlike effects on other organs, damage does not depend upon inhalation. The upper layer of the skin, the stratum corneum (rich in cholesterol fatty acids and ceramide), is very susceptible to damage induced by exposure to environmental stressors that can modify its lipid composition and thereby affect its function of protecting skin from dehydration. Scavenger receptor B1 (SR-B1) is involved in the uptake of cholesterol in several tissues including skin. We previously demonstrated that CS exposure induces formation of aldehyde (HNE) adducts that decrease SR-B1 expression. As topical resveratrol, a well-known polyphenolic stilbene, has been demonstrated to show benefits against skin disorders, we investigated its possible role as a protective agent against CS-induced reduction of SR-B1 expression in cutaneous tissue. In this study, we demonstrate that resveratrol at doses ranging from 0.5 to 10 μM is not toxic and is able to increase SR-B1 protein levels in a dose-dependent manner in human keratinocytes. Moreover, when the cells that were pretreated with various doses of resveratrol were exposed to CS, the loss of SR-B1 was prevented in a dose-dependent manner. In addition, in keratinocytes, resveratrol was also able to prevent an increase in HNE-protein adducts induced by CS. In particular resveratrol was able to prevent HNE-SR-B1 adduct formation. Thus, resveratrol seems to be a natural compound that could provide skin with a defense against exogenous stressors by protecting the essential cholesterol receptor, SR-B1.

Keywords

Keratinocytes, Biochemistry & Molecular Biology, Scavenger Receptors, Medical Biotechnology, Free radicals, Medical Biochemistry and Metabolomics, Cardiovascular, Antioxidants, Cell Line, Medicinal and Biomolecular Chemistry, Scavenger receptor B1, Tobacco, Complementary and Integrative Health, Stilbenes, Medical biochemistry and metabolomics, Humans, Protein adducts, Skin, Aldehydes, Biomedical and Clinical Sciences, Tobacco Smoke and Health, Prevention, Smoking, Scavenger Receptors, Class B, 4-Hydroxynonenal, Oxidative Stress, Cholesterol, Oxidative stress, Resveratrol, Biochemistry and cell biology, Class B, Biochemistry and Cell Biology

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    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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    impulse
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    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
29
Top 10%
Average
Top 10%
Green
bronze