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Assessment of agonistic and antagonistic properties of humidifier disinfectants to the estrogenic and androgenic receptors by transactivation assay

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Abstract

Before being recalled and banned from the Korean market, humidifier disinfectants (HDs) were added to the humidifier water tank to prevent microbial growth. The known HDs active ingredients included the are oligo(2-(2-ethoxy)ethoxyethyl guanidine (PGH), polyhexamethylene guanidine (PHMG), a mixture of methylisothiazolinone (MIT) and chloromethylisothiazolinone (CMIT), didecyldimethyl ammonium chloride (DDAC), Sodium dichloroisocyanurate (NaDCC), and alkyldimethylbenzyl ammonium chloride (BAC). Previous epidemiological studies have suggested that PHMG induces fatal lung disease in pregnant, post-partum women, and young children. In an animal study, a mixture of DDAC and BAC exhibited decreased fertility and fecundity; increased time to first litter, longer pregnancy intervals, fewer pups per litter, and fewer pregnancies. In this study, endocrine-disrupting effects of HDs were investigated using estrogen receptor (ER) and androgen receptor (AR) transactivation assay based on OECD Test guidelines. Unexpectedly, unlike the previously reported reproductive toxicity data, in the present study, HDs did not show ER and AR transcriptional activation agonist and/or antagonist effects. However, it is difficult to conclude that HDs has no endocrine disruption effects, and further research on the effects of HDs mixtures, and in vivo tests including Uterotrophic bioassay and Hershberger bioassay would be necessary.

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Acknowledgements

This work was supported by a Grant from the Dongduk Women’s University

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Authors and Affiliations

  1. College of Pharmacy, Dongduk Women’s University, 60, Hwarang-ro, 13-gil, Seongbuk-gu, Seoul, 02748, Korea

    Handule Lee, Juyoung Park & Kwangsik Park

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  1. Handule Lee
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  2. Juyoung Park
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  3. Kwangsik Park
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Correspondence to Kwangsik Park.

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Lee, H., Park, J. & Park, K. Assessment of agonistic and antagonistic properties of humidifier disinfectants to the estrogenic and androgenic receptors by transactivation assay. Toxicol Res. 38, 99–109 (2022). https://doi.org/10.1007/s43188-021-00111-3

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  • DOI: https://doi.org/10.1007/s43188-021-00111-3

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