Abstract
Objectives: To evaluate periconceptional maternal biochemical and hematological parameters and vitamin profiles in relation to the risk of early pregnancy loss and birth weight.
Design: Prospective longitudinal study.
Setting: University Medical Centre Nijmegen, Academic Medical Centre, Amsterdam, Maria and Elisabeth Hospitals, Tilburg, and Catharina Hospital, Eindhoven, The Netherlands.
Subjects: A cohort of 240 women recruited before pregnancy.
Interventions: Blood samples were taken preconceptional and at 6 and 10 weeks amenorrhea in which the concentrations of hemoglobin, hematocrit, creatinin, uric acid, total protein, serum iron, total iron-binding capacity, ferritin, and the concentrations of retinol, tocopherol, thiamine, riboflavin, pyridoxal-5′-phosphate, cobalamin and folate were analyzed.
Main outcome measures: Risk of early pregnancy loss and birth weight.
Results: The risk of early pregnancy loss increased with increasing prepregnancy weight, and when the periconceptional decline in hematocrit, creatinin and uric acid was less profound (slope: P<0.01). Maternal smoking was negatively associated with birth weight (mean reduction of 183 g, P<0.05). Maternal age and prepregnancy weight were positively associated with birth weight (P<0.01). No significant associations were found between vitamin concentrations and risk of early pregnancy loss or birth weight.
Conclusions: Several periconceptional biochemical parameters are significantly associated with early pregnancy loss. The effects of maternal periconceptional health on embryonic development and subsequent pregnancy outcome should be further explored.
Sponsorship: Dutch Prevention fund, grants no. 28.1358 and 28.1006.
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Acknowledgements
We would like to thank Mr W Lemmens for his assistance in programming, Mrs N Hamelvan Bruggen, Mrs E van de Laak-Schellekens, Mrs W Mathijssen, and Mrs A van de Hurk, research nurses, for the collection of data.
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Guarantor: EAP Steegers.
Contributors: S de W studied the literature, interpreted the data and wrote the report with contributions from all authors. RPM S-T was responsible for recruitment of women, and designed the study together with EAPS TM de B designed the statistical model and carried out the analyses. CMGT developed most of the vitamin assays and takes full responsibility for the accuracy of laboratory measurements and data integrity.
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de Weerd, S., Steegers-Theunissen, R., de Boo, T. et al. Maternal periconceptional biochemical and hematological parameters, vitamin profiles and pregnancy outcome. Eur J Clin Nutr 57, 1128–1134 (2003). https://doi.org/10.1038/sj.ejcn.1601654
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DOI: https://doi.org/10.1038/sj.ejcn.1601654
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