Cited by 316Skin Protection and AgingAntioxidant Activity and Oxidative StressPhytochemicals and Antioxidant Activities

Free Radicals and Extrinsic Skin Aging

Open access
Poljšak, Borut, Dahmane, Raja·2012·Dermatology Research and Practice

Abstract

Human skin is constantly directly exposed to the air, solar radiation, environmental pollutants, or other mechanical and chemical insults, which are capable of inducing the generation of free radicals as well as reactive oxygen species (ROS) of our own metabolism. Extrinsic skin damage develops due to several factors: ionizing radiation, severe physical and psychological stress, alcohol intake, poor nutrition, overeating, environmental pollution, and exposure to UV radiation (UVR). It is estimated that among all these environmental factors, UVR contributes up to 80%. UV-induced generation of ROS in the skin develops oxidative stress, when their formation exceeds the antioxidant defence ability of the target cell. The primary mechanism by which UVR initiates molecular responses in human skin is via photochemical generation of ROS mainly formation of superoxide anion (O(2) (-) (∙)), hydrogen peroxide (H(2)O(2)), hydroxyl radical (OH(∙)), and singlet oxygen ((1)O(2)). The only protection of our skin is in its endogenous protection (melanin and enzymatic antioxidants) and antioxidants we consume from the food (vitamin A, C, E, etc.). The most important strategy to reduce the risk of sun UVR damage is to avoid the sun exposure and the use of sunscreens. The next step is the use of exogenous antioxidants orally or by topical application and interventions in preventing oxidative stress and in enhanced DNA repair.

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Registry

Crossref · 10.1155/2012/135206

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  • Both intrinsic and extrinsic skin ageing processes are associated with increased reactive oxygen species and oxidative stress in the skin.

    “The two processes overlap and are closely linked to increased reactive oxygen species (ROS) and oxidative stress in the skin [9].”

    From Bioactive Compounds for Skin Health: A Review (2021) · cites this paper as [9]

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Research works printed but not linked: 1

  1. [16]Thiele J Barland CO Ghadially R Elias P Gilchrest B Krutmann J Permeability and antioxidant barriers in aged skin Skin Aging 2006 Berlin, Germany Springer

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Authors
Poljšak, B., & Dahmane, R.
Affiliations
University of Ljubljana (SI)
Corresponding author
Dahmane, Raja
Venue
Dermatology Research and Practice
Publisher
Wiley
Published
2012
Volume
2012
Pages
1-4
ISSN
  • 1687-6105 (ISSN-L)
  • 1687-6113
OpenAlex
W2037404352
Cited by
316
References
20
Citations by year
2026: 16 · 2025: 25 · 2024: 30 · 2023: 27 · 2022: 35 · 2021: 33 · 2020: 30 · 2019: 18 · 2018: 19 · 2017: 14 · 2016: 24 · 2015: 19 · 2014: 14 · 2013: 9 · 2012: 3
FWCI
18.02
Type
journal article
Language
en
Open access
Locations
  • Dermatology Research and Practice (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Repository of the University of Ljubljana (University of Ljubljana) (publishedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Health Sciences › Medicine › Dermatology › Skin Protection and Aging
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
Keywords
extrinsic skin aging, free radicals, reactive oxygen species, oxidative stress, ultraviolet radiation, superoxide, hydroxyl radicals, singlet oxygen, hydrogen peroxide, antioxidants, sunscreen, DNA repair, melanin, environmental pollutants

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