The Protective Role of Melanin Against UV Damage in Human Skin

Overview

Journal Photochem Photobiol

Specialties Biochemistry
Biology
Chemistry

Date 2008 Apr 26

PMID 18435612

Citations 505

Authors

Michaela Brenner

Vincent J Hearing

Affiliations

Soon will be listed here.

Abstract

Human skin is repeatedly exposed to UVR that influences the function and survival of many cell types and is regarded as the main causative factor in the induction of skin cancer. It has been traditionally believed that skin pigmentation is the most important photoprotective factor, as melanin, besides functioning as a broadband UV absorbent, has antioxidant and radical scavenging properties. Besides, many epidemiological studies have shown a lower incidence for skin cancer in individuals with darker skin compared to those with fair skin. Skin pigmentation is of great cultural and cosmetic importance, yet the role of melanin in photoprotection is still controversial. This article outlines the major acute and chronic effects of UVR on human skin, the properties of melanin, the regulation of pigmentation and its effect on skin cancer prevention.

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