Fetal Growth poor if Vitamin D-Binding Protein gene poor – Feb 2017

Placental Vitamin D-Binding Protein Expression in Human Idiopathic Fetal Growth Restriction.

J Pregnancy. 2017;2017:5120267. doi: 10.1155/2017/5120267. Epub 2017 Feb 15.
Wookey AF1, Chollangi T1, Yong HE1, Kalionis B1, Brennecke SP2, Murthi P3, Georgiou HM4.


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Vitamin D-binding protein is a multifunctional serum protein with multiple actions related to normal health. Vitamin D-binding protein transports vitamin D and influences the metabolism of this key hormone but it also has additional immunomodulatory and actin-clearing properties. We investigated whether vitamin D-binding protein expression is altered in fetal growth restriction-associated placental dysfunction. Protein was extracted from 35 placentae derived from 17 healthy control subjects and 18 gestation-matched subjects with fetal growth restriction (FGR). FGR subjects were further subdivided as idiopathic (n = 9) and nonidiopathic (n = 9). Vitamin D-binding protein and 25(OH) vitamin D were measured by ELISA and normalized to protein concentration. The results showed significantly reduced levels of placental vitamin D-binding protein (control versus FGR, p < 0.05, Student's t-test) that were strongly associated with idiopathic fetal growth restriction (p < 0.01, Kruskal-Wallis), whereas levels of vitamin D-binding protein were not associated with placental 25(OH) vitamin D stores (p = 0.295, Pearson's correlation). As such, vitamin D-binding protein may be a factor in unexplained placental dysfunction associated with idiopathic fetal growth restriction and may potentially serve as a biomarker of this disease.

PMID: 28293436 PMCID: PMC5331297 DOI: 10.1155/2017/5120267

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