4.2 Article

Serum 25-hydroxyvitamin D in pregnant women during preterm labor

Journal

ASIA PACIFIC JOURNAL OF CLINICAL NUTRITION
Volume 26, Issue 2, Pages 287-290

Publisher

H E C PRESS, HEALTHY EATING CLUB PTY LTD
DOI: 10.6133/apjcn.112015.11

Keywords

vitamin D; deficiency; pregnancy; preterm labor; 25-hydroxyvitamin D

Funding

  1. Ratchadapiseksompotch Fund, Faculty of Medicine, Chulalongkorn University [RA57/100]

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Background and Objectives: Pregnancy complications hypothesized to be related to vitamin D include preeclampsia, gestational diabetes, low birth weight, preterm delivery, Cesarean section and infectious disease. There have been a few studies which have demonstrated maternal serum vitamin D to be associated with preterm labor. The objective was to evaluate the serum vitamin D concentrations in Thai pregnant women with and without preterm labor and to find the prevalence of vitamin D deficiency and insufficiency in both groups. Methods and Study Design: Blood samples were collected from pregnant women with and without preterm labor (matched for gestational age). Serum 25-hydroxyvitamin D (25-OHD) concentrations were measured by chemiluminescence method. Results: A total of 60 pregnant women were included into the study, 30 patients in the preterm labor group and another 30 patients in the control group. The serum 25-OHD concentration was 21.0 +/- 7.5 ng/mL and the prevalence of vitamin D deficiency was 48.3% in total group of pregnant women. The serum 25-OHD concentrations were not different between the preterm labor and the control groups (20.9 +/- 8.4 vs 21.2 +/- 6.7 ng/mL, p=0.91). The prevalence of vitamin D deficiency and insufficiency were not different between the pre term labor and the control groups (53.3% vs 43.3%, p=0.44 and 83.3% vs 90%, p=0.45, respectively). Conclusion: The serum 25-hydroxyvitamin D concentrations and the prevalence of vitamin D deficiency and insufficiency were not different between the preterm labor and the control groups. The serum 25-OHD could not predict preterm labor in this Thai population.

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