Cited by 46Trace Elements in HealthImmunotoxicology and immune responsesIron Metabolism and Disorders

Effects of zinc status on age-related T cell dysfunction and chronic inflammation

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Wong, Carmen P., Magnusson, Kathy R., Sharpton, Thomas J., Ho, Emily·2021·BioMetals

Abstract

Age-related T cell dysfunction contributes to immunosenescence and chronic inflammation. Aging is also associated with a progressive decline in zinc status. Zinc is an essential micronutrient critical for immune function. A significant portion of the older populations are at risk for marginal zinc deficiency. The combined impact of dietary zinc deficiency and age on immune dysfunction has not been well explored despite the common occurrence together in the elderly population. We hypothesize that age-related zinc loss contributes to T cell dysfunction and chronic inflammation in the elderly and is exacerbated by inadequate dietary intake and improved with zinc supplementation. Using an aging mouse model, the effects of marginal zinc deficiency and zinc supplementation on Th1/Th17/proinflammatory cytokine profiles and CD4+ T cell naïve/memory phenotypes were examined. In the first study, young (2 months) and old (24 months) C57BL/6 mice were fed a zinc adequate (ZA) or marginally zinc deficient (MZD) diets for 6 weeks. In the second study, mice were fed a ZA or zinc supplemented (ZS) diet for 6 weeks. MZD old mice had significant increase in LPS-induced IL6 compared to ZA old mice. In contrast, ZS old mice had significantly reduced plasma MCP1 levels, reduced T cell activation-induced IFNγ, IL17, and TNFα response, as well as increased naïve CD4+ T-cell subset compared to ZA old mice. Our data suggest that zinc deficiency is an important contributing factor in immune aging, and improving zinc status can in part reverse immune dysfunction and reduce chronic inflammation associated with aging.

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  • Supplementation of minerals, such as zinc, can increase the naive T cell subgroup and improve the homeostasis of Th1 and Th2 cells.

    “The supplementation of minerals, such as zinc, can increase the naive T cell subgroup328 and improve the homeostasis of Th1 and Th2 cells.329”

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Authors
Wong, C. P., Magnusson, K. R., Sharpton, T. J., & Ho, E.
Affiliations
Oregon State University (US)
Corresponding author
Ho, Emily
Venue
BioMetals
Published
2021-01-03
Volume
34
Issue
2
Pages
291-301
ISSN
  • 0966-0844 (ISSN-L)
  • 1572-8773
OpenAlex
W3120909992
Cited by
46
References
56
Citations by year
2026: 4 · 2025: 11 · 2024: 7 · 2023: 7 · 2022: 12 · 2021: 5
FWCI
4.94
Type
journal article
Language
en
Open access
Locations
  • BioMetals (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Food and Agriculture (NIFA-2018-67017-27358)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotoxicology and immune responses
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
Keywords
zinc deficiency, zinc supplementation, immunosenescence, T cell dysfunction, chronic inflammation, aging, Th1/Th17 cytokines, CD4+ T cell subsets, naive T cells, memory T cells, MCP-1, interleukin-6, interferon-gamma, IL-17, TNF-α, zinc intake, older adults
MeSH terms
Aging, Animals, Chronic Disease, Inflammation, Lipopolysaccharides, Male, Mice, Inbred C57BL, T-Lymphocytes, Zinc, Cytokines, Dietary Supplements, Mice

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