Abstract
Preeclampsia is one of the leading causes of maternal mortality-morbidity, and environmental factors act as the main driving force for the development of disease in genetically lean women. Trace element levels (zinc, copper) and thiol state (total, native thiol) may affect involved risk factors and play a role in the pathogenesis. The objective of our study is to assess trace element and thiol levels in patient and control groups. A total number of 88 pregnant women (in their third trimester) included 43 preeclampsia patients and 45 normotensive pregnant women as controls. The main findings of this study were the significantly elevated copper levels and decreased thiol levels (native and total thiols) in the patient group compared to controls (p < 0.05). Disulfide levels were not statistically different between the groups (p > 0.05). In patients, the predictive cutoff value of copper was 224 μg/dL and was 1.19 for the copper/native thiol ratio. Zinc levels were not statistically different between the two groups. Correlation analysis revealed no relationship between zinc-copper and zinc-total thiol levels in patients, while a positive correlation was evident in controls (zinc-copper, p < 0.05, r = 0.425, and zinc-total thiol levels, p < 0.05, r = 0.642). Patients had marginally high ALT and AST values in the normal range, and a significant difference was found between the two groups (p < 0.05). According to these results, elevated copper levels and decreased thiol levels may have a value for early prediction. The mechanisms that may be responsible for the altered element and thiol status have been discussed here in the context of oxidative stress.
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We would like to thank Tagı Polat for his supports.
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The research was funded by Bezmialem Foundation University Scientific Research Projects Unit (Project number: 6.2016/43).
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Ayse Zehra Gul, Nil Atakul, and Sahabettin Selek contributed to the research equally.
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This research was conducted in accordance with the Declaration of Helsinki and approved by the clinical research ethics committee of Bezmialem Vakıf University (No. 54022451-050.05.04).
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Gul, A.Z., Atakul, N., Selek, S. et al. Maternal Serum Levels of Zinc, Copper, and Thiols in Preeclampsia Patients: a Case-Control Study. Biol Trace Elem Res 200, 464–472 (2022). https://doi.org/10.1007/s12011-021-02660-y
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DOI: https://doi.org/10.1007/s12011-021-02660-y