Abstract
Twenty five percent of pregnant women have some degree of vaginal bleeding during the first trimester, and about 50% of those pregnancies end in spontaneous abortion (SA) because the fetus is not developing typically. As studies have reported that inadequacies of trace metals such as Copper (Cu), Zinc (Zn), Magnesium (Mg) can predispose to various adverse pregnancy outcomes (PO); multiple micronutrient (MMN) supplementations are given without justifying their deficiency and toxicities on the fetus. Earlier studies on effects of MMN supplementations during pregnancy have not considered the need, duration, dose, and time of initiation of supplementations leading to inconclusive results. So, there is a need to optimize this to prevent their abuse and side effects. This study can help in establishing critical cut-offs of these minerals in maternal serum that can forecast future pregnancy outcomes. Study measured the serum Zn, Cu, Mg, and Fe in pregnant women who presented with (n = 80) and without (n = 100) SA at 5–2 weeks of pregnancy using iron -ferrozine method, magnesium-calmagite method, zinc reaction with nitro-PAPS, copper reaction with Di-Br- PAESA methods, respectively. Data analyzed using the student t test and cutoff value was established using Receiver Operating Characteristic (ROC) by SPSS software. Maternal serum Cu, Mg, Fe, and Zn levels measured were significantly lower in SA as compared to that of controls (p < 0.005) (Fig. 1) and maternal age and Body mass index were not statistically significant different among study group. Maternal serum Cu, Mg, Zn and Iron (Fe) measured in 5–12 weeks of pregnancy has the potential to forecast future occurrence of SA. The study has been registered under “The Clinical Trials Registry- India (CTRI),” -REF/2020/01/030393.
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Acknowledgements
The authors thank the Indian Council of Medical Research (ICMR), New Delhi, India [File No 5/7/79/MH/Adhoc/2020-RBMCH] for funding this research project to Mahadev Rao. All the authors stated in the study equally contributed to the study design, and the principal author made analysis and performance of the study. The article was written and reviewed by the principal and corresponding author. We acknowledge Kasturba hospital, Manipal, Manipal Academy of higher education to permit us and provide patients for the study.
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The present study analysis funding contributed by Kasturba medical college, Manipal, Manipal Academy of higher education, Manipal, India.
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S-Protocol/project development, Data collection or management, Data analysis, Manuscript writing/editing, Patient recruitment. KP-Protocol/project development, Manuscript writing/editing. VGP-Protocol/project development, Patient recruitment. SS-Protocol/project development. MR- Protocol/project development. AK-Statistical analysis.
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This study was approved by the appropriate institutional ethics committee- Kasturba medical college and the hospital institutional ethical committee (IEC:182/2018) and the study was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. The study has been registered under “The Clinical Trials Registry- India (CTRI),” -REF/2020/01/030393.
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Sairoz, Prabhu, K., Poojari, V.G. et al. Maternal Serum Zinc, Copper, Magnesium, and Iron in Spontaneous Abortions. Ind J Clin Biochem 38, 128–131 (2023). https://doi.org/10.1007/s12291-022-01043-x
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DOI: https://doi.org/10.1007/s12291-022-01043-x