Cited by 458Trace Elements in HealthHeavy Metal Exposure and ToxicityAntioxidant Activity and Oxidative Stress

Critical Role of Zinc as Either an Antioxidant or a Prooxidant in Cellular Systems

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Lee, Sung Ryul·2018·Oxidative Medicine and Cellular Longevity

Abstract

Zinc is recognized as an essential trace metal required for human health; its deficiency is strongly associated with neuronal and immune system defects. Although zinc is a redox‐inert metal, it functions as an antioxidant through the catalytic action of copper/zinc‐superoxide dismutase, stabilization of membrane structure, protection of the protein sulfhydryl groups, and upregulation of the expression of metallothionein, which possesses a metal‐binding capacity and also exhibits antioxidant functions. In addition, zinc suppresses anti‐inflammatory responses that would otherwise augment oxidative stress. The actions of zinc are not straightforward owing to its numerous roles in biological systems. It has been shown that zinc deficiency and zinc excess cause cellular oxidative stress. To gain insights into the dual action of zinc, as either an antioxidant or a prooxidant, and the conditions under which each role is performed, the oxidative stresses that occur in zinc deficiency and zinc overload in conjunction with the intracellular regulation of free zinc are summarized. Additionally, the regulatory role of zinc in mitochondrial homeostasis and its impact on oxidative stress are briefly addressed.

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Authors
Lee, S. R.
Affiliations
Inje University (KR)
Corresponding author
Lee, Sung Ryul
Venue
Oxidative Medicine and Cellular Longevity
Publisher
Wiley
Published
2018-01
Volume
2018
Issue
1
Pages
9156285-9156285
ISSN
  • 1942-0994 (ISSN-L)
  • 1942-0900
OpenAlex
W2793498768
Cited by
458
References
137
Citations by year
2026: 41 · 2025: 76 · 2024: 60 · 2023: 72 · 2022: 72 · 2021: 64 · 2020: 47 · 2019: 21 · 2018: 5
FWCI
4.39
Type
journal article
Language
en
Open access
Locations
  • Oxidative Medicine and Cellular Longevity (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Ministry of Education, Science and Technology (2015R1D1A3A 01015596)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Heavy Metal Exposure and Toxicity
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
zinc, antioxidant activity, pro-oxidant activity, oxidative stress, zinc deficiency, zinc overload, copper-zinc superoxide dismutase, metallothionein, sulfhydryl groups, anti-inflammatory response, mitochondrial homeostasis, trace metals
MeSH terms
Animals, Antioxidants, Chelating Agents, Homeostasis, Humans, Inflammation, Mitochondria, Neurons, Oxidation-Reduction, Zinc, Oxidative Stress

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