Evidence map›Paper›PMID 27939956›Full record

ArticleBone2017

Maternal vitamin D biomarkers are associated with maternal and fetal bone turnover among pregnant women consuming controlled amounts of vitamin D, calcium, and phosphorus.

Heyjun Park, Patsy M Brannon, Allyson A West, Jian Yan, Xinyin Jiang, Cydne A Perry, Olga Malysheva, Saurabh Mehta, Marie A Caudill

Abstract read
In one paragraph

Article in Bone, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

  1. Trial
  2. Vitamin D binding protein rs7041 genotype alters vitamin D metabolism in pregnant women.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2018
    Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. The role of vitamin D in perinatology. An up-to-date review.Archives of medical science : AMS · 2021
    Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Heyjun ParkDivision of Nutritional Sciences, Cornell University, Ithaca, NY, USA.
Patsy M BrannonDivision of Nutritional Sciences, Cornell University, Ithaca, NY, USA.
Allyson A WestDivision of Nutritional Sciences, Cornell University, Ithaca, NY, USA.
Jian YanDivision of Nutritional Sciences, Cornell University, Ithaca, NY, USA.
Xinyin JiangDivision of Nutritional Sciences, Cornell University, Ithaca, NY, USA.
Cydne A PerryDivision of Nutritional Sciences, Cornell University, Ithaca, NY, USA.
Olga MalyshevaDivision of Nutritional Sciences, Cornell University, Ithaca, NY, USA.
Saurabh MehtaDivision of Nutritional Sciences, Cornell University, Ithaca, NY, USA.
Marie A CaudillDivision of Nutritional Sciences, Cornell University, Ithaca, NY, USA. Electronic address: mac379@cornell.edu.

Funding

Vitamin D metabolism in pregnant women consuming controlled intakesR03HD080824 · NICHD · CORNELL UNIVERSITY · PI CAUDILL, MARIE A · 2015 to 2016
$160k
NICHD NIH HHS R03 HD080824
6 · The paper itself

Abstract

Vitamin D plays a central role in calcium homeostasis; however, its relationship with bone turnover during pregnancy remains unclear due to a lack of studies that have rigorously controlled for vitamin D and other nutrients known to influence bone metabolism. Similarly, prior investigations of the effect of pregnancy on bone turnover relative to the nonpregnant state may have been confounded by varying intakes of these nutrients. Nested within a controlled intake study, the present investigation sought to quantify associations between maternal vitamin D biomarkers and biochemical markers of bone turnover among pregnant (versus nonpregnant) women and their fetuses under conditions of equivalent and adequate intakes of vitamin D and related nutrients. Changes in markers of bone turnover across the third trimester were also examined. Healthy pregnant (26-29 wk gestation; n=26) and nonpregnant (n=21) women consumed 511IU vitamin D/d, 1.6g calcium/d, and 1.9g phosphorus/d for 10weeks while participating in a controlled feeding study featuring two choline doses. Based on linear mixed models adjusted for influential covariates (e.g., BMI, ethnicity, and season), pregnant women had 50-150% higher (P<0.001) concentrations of bone resorption markers than nonpregnant women. Among pregnant women, increases in maternal 25(OH)D across the study period were associated (P<0.020) with lower osteocalcin and deoxypyridinoline at study-end, and higher fetal osteocalcin. In addition, maternal free 25(OH)D, 1,25(OH)

Indexed as

Bone RemodelingFeeding BehaviorAdultAlbuminsAlkaline PhosphataseAmino AcidsBiomarkersCalciumCollagen Type ICreatinineFemaleFetusHumansOsteocalcinPeptidesPhosphorusAlbuminsAlkaline PhosphataseAmino AcidsBiomarkersCalciumCollagen Type Icollagen type I trimeric cross-linked peptideCreatininedeoxypyridinolineOsteocalcinPeptidesPhosphorusVitamin D25-hydroxyvitamin DBone metabolismBone turnoverCalcium homeostasisPregnancyVitamin D

Identifiers

PMID27939956
PMCPMC5222782

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.