4.7 Article

Triazine herbicides exposure, natural immunoglobulin M antibodies, and fasting plasma glucose changes: Association and mediation analyses in general Chinese urban adults

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ENVIRONMENTAL POLLUTION
卷 330, 期 -, 页码 -

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ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2023.121833

关键词

Atrazine; Cyanazine; Glucose homeostasis; Immunoglobulin

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This study aimed to assess the associations between triazine herbicides and glycemia-related risk indicators in general adults. The results showed that triazine herbicides exposure was positively associated with abnormal glucose metabolism, and decreasing serum IgM partly mediated these associations among uninfected participants.
The effects of triazine herbicides on glucose metabolism remain unclear. In this study, we aimed to assess the associations between serum triazine herbicides and glycemia-related risk indicators in general adults, and to evaluate the mediating role of natural immunoglobulin M antibodies (IgM) in the above associations among uninfected participants. We measured the concentrations of atrazine, cyanazine, and IgM in serum, as well as fasting plasma glucose (FPG), and fasting plasma insulin in 4423 adult participants from the Wuhan-Zhuhai cohort baseline population, enrolled in 2011-2012. Generalized linear models were used to evaluate the asso-ciations of serum triazine herbicides with glycemia-related risk indicators, and mediation analyses were per-formed to evaluate the mediating role of serum IgM in the above associations. The median levels of serum atrazine and cyanazine were 0.0237 mu g/L and 0.0786 mu g/L, respectively. Our study found significant positive associations of serum atrazine, cyanazine, and sigma triazine with FPG levels, risk of impaired fasting glucose (IFG), abnormal glucose regulation (AGR), and type 2 diabetes (T2D). Additionally, serum cyanazine and sigma triazine were found to be significant positive associated with the homeostatic model assessment of insulin resistance (HOMA-IR) levels. Significant negative linear relationships were observed in associations of serum IgM with serum triazine herbicides, FPG, HOMA-IR levels, the prevalence of T2D, and AGR (P < 0.05). Furthermore, we observed a significant mediating role by IgM in the associations of serum triazine herbicides with FPG, HOMA-IR, and AGR, with the proportions ranging from 2.96% to 7.71%. To ensure the stability of our findings, we con-ducted sensitivity analyses in normoglycemic participants and found that the association of serum IgM with FPG and the mediating role by IgM remained stable. Our results suggest that triazine herbicides exposure is positively associated with abnormal glucose metabolism, and decreasing serum IgM may partly mediate these associations.

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