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Associations of serum perfluoroalkyl substances with concentrations of blood manganese and selenium

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Abstract

The aim of this study was to estimate the associations of blood manganese and selenium with serum concentrations of selected perfluoroalkyl substances (PFAS). The presence or absence of this association is important because PFAS have documented pro-oxidant properties, whereas manganese and selenium are critical to antioxidant responses. For this purpose, the data from NHANES for US adults aged ≥ 20 years (N = 3982), adolescents aged 12–19 years (N = 1524), and children aged 3–11 years (N = 639) were analyzed. Among adults, concentrations of blood manganese were found to be inversely associated with serum concentrations of perfluorooctanoic acid or PFOA (β =  − 0.04204, p < 0.01), perfluorononanoic acid or PFNA (β =  − 0.02700, p < 0.01), perfluorohexane sulfonate or PFHxS (β =  − 0.04306, p < 0.01), and perfluorooctane sulfonate or PFOS (β =  − 0.04494, p < 0.01). Blood concentrations of selenium were found to be positively associated with PFHxS only among adults (β = 0.000678, p = 0.047) and adolescents (β = 0.01377, p = 0.02). The Mn results but not the less consistent Se associations were robust to adjustments for serum albumin. Possible reasons for the inverse association of PFOA, PFHxS, PFNA, and PFOS with Mn among US adults are discussed. The finding raises concerns about manganese’s diminished ability to mount antioxidant responses to PFAS exposure.

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Data availability

All data used for analysis for this study are in public domain and available free of charge at www.cdc.gov/nchs/nhanes/index.htm

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Contributions

Ram B Jain: Study design, statistical analysis, interpretation of results, writing, editing, and reviewing of draft and final manuscript.

Alan Ducatman: Study design, interpretation of results, writing, editing, and reviewing of draft and final manuscript.

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Correspondence to Ram B. Jain.

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Since this study did not recruit any human and/or animal subjects, this section does not apply.

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Since this study is not attempting to re-publish/publish any third party or author’s previously published material, this section does not apply.

Conflict of interest

Ram B Jain declares that he had no financial and other conflicts that could have affected the conclusions arrived at in this communication. Alan Ducatman has received funding for health communications related to the enrollment and health communications of the C8 Health Project and he has provided paid scientific support to communities seeking similar class action support to institute medical monitoring following exposure to drinking water contaminants.

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Jain, R.B., Ducatman, A. Associations of serum perfluoroalkyl substances with concentrations of blood manganese and selenium. Environ Sci Pollut Res 29, 90098–90107 (2022). https://doi.org/10.1007/s11356-022-22089-7

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  • DOI: https://doi.org/10.1007/s11356-022-22089-7

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