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Research Article

Growth, body composition and metabolic profile of 8-year-old children exposed to metformin in utero

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Pages 570-575 | Received 10 May 2012, Accepted 10 Jul 2012, Published online: 30 Aug 2012
 

Abstract

Objectives. To investigate the possible long-term effects of metformin exposure on growth and development of the offspring born to mothers with polycystic ovary syndrome (PCOS). The drug passes through the placenta and can potentially influence the fetus. Patients and methods. This is a follow-up study of a randomized, controlled trial on PCOS women, randomized to metformin or placebo in pregnancy. Out of 37 children aged 7–9 years, 25 agreed to participate. Primary outcome measures were growth, body composition and metabolic parameters. Results. There were no differences in height, weight or body composition between those exposed to metformin and those exposed to placebo. We found a higher fasting glucose level in the metformin group (4.93 mmol/L vs. 4.60 mmol/L, p = 0.04). In the metformin group there was a trend towards higher systolic blood pressure (106 mmHg vs. 101 mmHg, p = 0.05) and a lower LDL cholesterol level (2.42 mmol/L vs. 2.99 mmol/L, p = 0.07). Conclusion. Metformin exposure during fetal life does not seem to influence growth and body composition at the age of 8 years. A higher fasting glucose level and a possible higher systolic blood pressure and lower LDL cholesterol level in the metformin group may be coincidental and should be further explored.

Acknowledgements

We thank Ellen Gjerløw, Berit Størdal and Kristin Rian for excellent technical assistance, and Anne Rø for critically reviewing the manuscript. The study has been funded by grants from the Norwegian University of Science and Technology (NTNU) and the Department of Children and Youth at St. Olavs Hospital, Trondheim University Hospital.

Declaration of interest: The authors report no conflict of interest. The authors alone are responsible for the content and writing of the article.

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