Abstract
The association between co-exposure to multiple metals and renal function is poorly understood. We aimed to evaluate the individual and joint effects of metal exposure on renal function in this study. We performed a cross-sectional study including 5828 participants in Guangxi, China, in 2019. Urine concentrations of 17 metals were detected by inductively coupled plasma mass spectrometry (ICP-MS). Logistic regression model and restricted cubic spline (RCS) were applied to investigate the association of individual metal exposure with renal dysfunction. Weighted quantile sum (WQS) regression and Bayesian kernel machine regression (BKMR) were used to assess the co-exposure effects of the metals. Participants with the highest quartile of urinary Cu were at 1.84-fold (95% confidence interval (CI): 1.20–2.87) increased risk of renal dysfunction compared with the lowest quartile. The highest quartiles of urinary Sr, Cs, V, Ba, and Se were associated with 0.27-fold (95% CI: 0.17–0.43), 0.33 (95% CI: 0.19–0.53), 0.41 (95% CI: 0.25–0.65), 0.58 (95% CI: 0.36–0.90), and 0.33 (95% CI: 0.19–0.56) decreased risk of renal dysfunction compared with their lowest quartile, respectively. Furthermore, urinary Ba and Cu were non-linearly correlated with renal dysfunction. The WQS analysis showed that mixed metal exposure was inversely associated with renal dysfunction (OR = 0.47, 95% CI: 0.35–0.62), and Sr accounted for the largest weight (52.2%), followed by Cs (32.3%) in the association. Moreover, we observed a potential interaction between Cu, Cs, and Ba for renal dysfunction in BKMR model. Exposure to Se, Sr, Cs, V, and Ba is associated with decreased risk of renal dysfunction, whereas an increased risk is associated with Cu exposure. Co-exposure to these metals is negatively associated with renal dysfunction, and Sr and Cs are the main contributors to the associations.
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Data availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Abbreviations
- ICP-MS:
-
inductively coupled plasma mass spectrometry
- LASSO:
-
least absolute shrinkage and selection operator
- RCS:
-
restricted cubic spline
- WQS:
-
weighted quantile sum
- BKMR:
-
bayesian kernel machine regression
- CKD:
-
chronic kidney disease
- GFR:
-
glomerular filtration rate
- MDRD:
-
modification of diet in renal disease
- SCr:
-
serum creatinine
- LOD:
-
limits of detection
- Tl:
-
thallium
- Rb:
-
rubidium
- Mo:
-
molybdenum
- Ti:
-
titanium
- Sn:
-
stannum
- Cr:
-
chromium
- Ni:
-
nickel
- Pb:
-
plumbum
- Se:
-
selenium
- Sr:
-
strontium
- Cs:
-
cesium
- Cu:
-
copper
- V:
-
vanadium
- Ba:
-
barium
- Mn:
-
manganese
- As:
-
arsenic
- Sb:
-
stibium
- BMI:
-
body mass index
- groupPIP:
-
group posterior inclusion probability
- condPIP:
-
conditional posterior inclusion probability
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Acknowledgements
The authors acknowledge all participants and all staff for their supports and cooperation in this study. We also thank the Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, and Academician Dongxin Lin workstation for providing a good experimental environment.
Funding
This work was funded by National Key Research and Development Program of China (2017YFC09071030).
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Xingxi Luo: conceptualization, formal analysis, methodology, writing-original draft, investigation. Dongping Huang: methodology, writing-original draft, formal analysis, investigation, data curation. Suyang Xiao: methodology, validation, investigation, data curation. Lei Lei: methodology, writing-review & editing. Kaili Wu: formal analysis, validation. Yu Yang: investigation, data curation. Meiliang Liu: data curation. Xiaoqiang Qiu: methodology, funding acquisition. Shun Liu: conceptualization, methodology, resources, writing-review & editing, supervision. Xiaoyun Zeng: conceptualization, methodology, resources, data curation, writing-review & editing, supervision, funding acquisition.
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Luo, X., Huang, D., Xiao, S. et al. Associations between co-exposure to multiple metals and renal function: a cross-sectional study in Guangxi, China. Environ Sci Pollut Res 30, 2637–2648 (2023). https://doi.org/10.1007/s11356-022-22352-x
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DOI: https://doi.org/10.1007/s11356-022-22352-x