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Relationship between gestational diabetes and serum trace element levels in pregnant women from Eastern Iran: a multivariate approach

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Abstract

The prevalence of gestational diabetes mellitus (GDM) has increased over the recent decades. Exposure to environmental contaminants may be a risk factor for the development of GDM, but this is heavily dependent on particular circumstances. Studies on various areas linking various factors are therefore needed. We examined the associations between serum trace element levels and incidents of GDM among 102 pregnant women (diabetic n = 60 and healthy n = 42) living in Birjand (Iran). Blood serum samples were analyzed for concentrations of elements linked to particulate matter air pollution such as As, Cd, Cu, Hg, Mn, Ni, V, and Zn. Concentrations of As (8.58 vs. 3.15 μg/L), Cd (6.74 vs. 0.52 μg/L), and Hg (2.60 vs. 0.90 μg/L) were significantly higher in women with GDM. Risk difference (RD) estimation showed that As, 0.516 (0.355, 0.677); Cd, 0.719 (0.534, 0.904); and Hg, 0.505 (0.276, 0.735) increase GDM probability, while V lower that risk, −0.139 (−0.237, −0.042). With the principal component analysis, we were able to separate subjects according to their GDM status based on element levels. Such classification revealed very high efficiency with a true positive rate of 93%, according to linear discriminant analysis. GDM subjects presented higher levels of As, Cd, and Hg, indicating that these elements may disturb insulin metabolism and promote the development of GDM. Therefore, we conclude that systematic monitoring of trace elements followed by multivariate modeling in women planning pregnancy should be carried out to prevent the development of GDM.

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The datasets used and analyzed during the current research are available from the corresponding author on request.

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Acknowledgement

The authors would like to acknowledge the Medical Toxicology and Drug Abuse Research Center at Birjand University of Medical Sciences for their assistance. We thank R. Rajaei, H. Ataei, and A. Amirabadizadeh for their contribution. We are also very grateful to all of the patients who participated in this project.

Funding

This project was generously supported financially by Birjand University of Medical Sciences (Grant No. 1398/5231).

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Authors and Affiliations

Authors

Contributions

MR, MB, AAT, LJB, BM, AS, MDD, and GB contributed to the design of the study, the interpretation of the results, and the drafting of the manuscript. MR and BM conducted the collection of the data. NA and LJB conducted the statistical analyses. All authors have read and approved the final version of the manuscript.

Corresponding author

Correspondence to Borhan Mansouri.

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Ethics approval and consent to participate

This study was conducted in accordance with the World Medical Association Declaration of Helsinki (WMA, 2018). This study was approved by the research and ethics committee of Birjand University of Medical Sciences (IR.BUMS.REC.1398.398).

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Not applicable.

Competing interests

The authors declare no competing interests.

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Responsible Editor: Philipp Gariguess

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Highlights

• Levels of As, Cd and Hg were significantly higher in women with GDM.

• Multivariate analyses clearly classify subjects with GDM based on metal levels.

• Elevated As, Cd and Hg levels increased the possibility of the development of GDM, while elevated V level lower that risk.

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Rezaei, M., Błaszczyk, M., Tinkov, A.A. et al. Relationship between gestational diabetes and serum trace element levels in pregnant women from Eastern Iran: a multivariate approach. Environ Sci Pollut Res 28, 45230–45239 (2021). https://doi.org/10.1007/s11356-021-13927-1

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  • DOI: https://doi.org/10.1007/s11356-021-13927-1

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