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Association analysis between organophosphorus flame retardants exposure and the risk of depression: Data from NHANES
Yi-Xin Chen1, Jing Zheng2, Xiao-Feng Zhang1
1Department of Toxicology, Public Health School, Harbin Medical University, No 157, Baojian Road, Nangang District, Harbin City 150081, Heilongjiang Province, China.
Background:
Organophosphorus flame retardants (OPFRs) can damage the brain and may cause abnormal behaviors. There was no population-based study to reveal the relationship between OPFRs and the occurrence of depression. This study utilized a publicly available database to investigate the correlation between OPFRs exposure and the risk of depression, and the mediation effect of inflammation on the correlation.
Methods:
Data in this study was from the database of the National Health and Nutrition Examination Survey. Multifactorial logistic regression was used to estimate the relationship between OPFRs exposure and the risk of depression, and a mediation effect model was constructed to explore the impact of inflammation on the correlation.
Results:
Data of 1273 participants was included in the study. It was found that individuals with high urinary concentration of bis-(2-chloroethyl) phosphate had an increased risk of developing depression (OR = 1.217, 95 % CI: 1.032-1.435). Combined exposure to OPFRs was significantly associated with the increased risk of depression than single OPFRs exposure. Subgroup analyses based on inflammatory levels in the body revealed that inflammation might exert the mediation effect on the association between OPFRs exposure and the risk of depression, with the contribution proportion of 8.23 %.
Limitations:
Cross-sectional data and rapid metabolism of OPFRs lead to uncertainty in revealing long-term exposure in the body.
Conclusions:
There was a correlation between OPFRs exposure and the risk of depression, which may be mediated by inflammation in the body to some extent.
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