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Tytuł:
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Suppression of Th2 cytokines as a potential mechanism for reduced antibody response following PFOA exposure in female B6C3F1 mice.
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Autorzy:
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De Guise S; Department of Pathobiology and Veterinary Science, University of Connecticut, 61 North Eagleville Road, Storrs, CT 06269, USA. Electronic address: .
Levin M; Department of Pathobiology and Veterinary Science, University of Connecticut, 61 North Eagleville Road, Storrs, CT 06269, USA. Electronic address: .
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Źródło:
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Toxicology letters [Toxicol Lett] 2021 Oct 15; Vol. 351, pp. 155-162. Date of Electronic Publication: 2021 Sep 10.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: Amsterdam : Elsevier
Original Publication: Amsterdam, Elsevier/North Holland.
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MeSH Terms:
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Caprylates/*toxicity
Cytokines/*metabolism
Fluorocarbons/*toxicity
Immunoglobulin M/*metabolism
Animals ; Corticosterone/metabolism ; Cytokines/genetics ; Dose-Response Relationship, Drug ; Female ; Gene Expression Regulation/drug effects ; Hemocyanins/immunology ; Mice
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Contributed Indexing:
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Keywords: Cytokines; Immunotoxicity; PFOA; TDAR; Th2; Total accumulated dose
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Substance Nomenclature:
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0 (Caprylates)
0 (Cytokines)
0 (Fluorocarbons)
0 (Immunoglobulin M)
9013-72-3 (Hemocyanins)
947VD76D3L (perfluorooctanoic acid)
FV4Y0JO2CX (keyhole-limpet hemocyanin)
W980KJ009P (Corticosterone)
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Entry Date(s):
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Date Created: 20210913 Date Completed: 20211008 Latest Revision: 20211008
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Update Code:
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20240105
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DOI:
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10.1016/j.toxlet.2021.09.002
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PMID:
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34517056
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Perfluorooctanoic acid (PFOA), a member of the Per- and polyfluoroalkyl substances, is a highly persistent "forever" chemicals with increasing concern for its potential health effects. However, the mechanisms of PFOA immunotoxic effects are poorly understood. We assessed the antibody response to a physiological antigen stimulation and associated cytokine response upon PFOA exposure. The significant decrease in the IgM antibody response to the T cell dependent antigen keyhole limpet hemocyanin (KLH) at a dose lower than the previously documented LOAEL was accompanied by a significant reduction of the Th2 serum cytokines IL-5 and IL-13, a non-significant dose-response reduction of IL-4, a significant reduction of the Th1 cytokine IL-12, and a non-significant dose-response increase in IL-2 and IFNγ. PFOA significantly decreased the pro-inflammatory cytokines IL-17α and IL-1α, decreased (non-significantly but dose-response) IL-6, and a significantly increased TNFα. Overall, the modulation of serum Th1/Th2 cytokines could explain the reduction in antibody response, pointing to a potential role for T helper cells in the immunotoxicity of PFOA. Further, the higher than anticipated weight loss and increased liver weight, compared to previous studies using similar doses, highlight the potential importance of the route and duration of exposure, contributing to the total accumulated dose, in assessing the toxicity of PFOA.
Competing Interests: Declaration of Competing Interest The authors report no declarations of interest.
(Copyright © 2021 Elsevier B.V. All rights reserved.)
