4.8 Article

Exposure to Novel Brominated Flame Retardants and Organophosphate Esters and Associations with Thyroid Cancer Risk: A Case-Control Study in Eastern China

期刊

ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 56, 期 24, 页码 17825-17835

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acs.est.2c04759

关键词

NBFRs; OPEs; thyroid cancer; multiple exposures; case-control study

资金

  1. National Natural Science Foundation of China [22193052, 22076215]
  2. Eco-Environmental Excellent Innovation Projects of the Research Center for Eco-Environmental Sciences [RCEES-EEI-2019-01]
  3. Open Fund of the State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences
  4. Chinese Academy of Sciences [KF2021-07]
  5. Special Project of Eco-Environmental Technology for Peak Carbon Dioxide Emis-sions and Carbon Neutrality [RCEES-TDZ-2021-23]

向作者/读者索取更多资源

Exposure to novel brominated flame retardants (NBFRs) and organophosphate esters (OPEs) may increase the risk of thyroid cancer and alter thyroid function.
Novel brominated flame retardant (NBFR) and organophosphate ester (OPE) exposure may engender adverse effects on human health. However, present epidemiological information regarding the effects of such exposure is limited and controversial. In this case-control study, 481 serum samples were collected from patients with thyroid cancer (n = 242) and healthy controls (n = 239) in Shandong Province, eastern China. The levels of NBFRs and OPEs, thyroid hormones, and serum lipid parameters were measured in all the participants. Pentabromotoluene, 2,3-dibromopropyl 2,4,6 tribromophenyl ether, decabromodiphenylethane (DBDPE), tris (2-chloroethyl) phosphate (TCEP), and triphenyl phosphate (TPP) were widely detected (detection frequency > 60%) in all the participants. A significantly high risk association was found between exposure of NBFRs and OPEs (namely 1,2,3,4,S-pentabromobenzene, DBDPE, tri-n-propyl phosphate, tri[(2R)-1-chloro-2-propyl] phosphate, tris (1,3-dichloro-2-propyl) phosphate, and tris (2-butoxyethyl) phosphate) and thyroid cancer in both males and females. In the females of the control group, TCEP levels exhibited a significantly positive association with thyroid-stimulating hormone and a negative association with triiodothyronine (T3), free triiodothyronine (FT3), and free thyroxine (FT4) levels. Weighted quantile sum regression evaluated the mixed effects of the compounds on thyroid hormones levels and thyroid cancer. As a result, TPP accounted for the majority of the T3, thyroxine, and FT3 amounts. Our results suggest that NBFR and OPE exposure contributes to alterations in thyroid function, thereby increasing thyroid cancer risk.

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