Evidence map›Paper›PMID 34578950›Full record

ArticleNutrients2021

Kidney Function-Dependence of Vitamin K-Status Parameters: Results from the TransplantLines Biobank and Cohort Studies.

Daan Kremer, Dion Groothof, Charlotte A Keyzer, Coby Eelderink, Tim J Knobbe, Adrian Post, Marco van Londen, Michele F Eisenga, TransplantLines Investigators, Leon J Schurgers and 3 more

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.3field-weighted citation impact, top 22% of its field
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

10 citing papers in PubMed, 14 citations in OpenAlex.

  1. Trial
  2. Article
  3. Vitamin K and women's health: a review.Frontiers in global women's health · 2025
    Review
  4. Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. 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

13 authors at 2 institutions in 1 country.

Daan KremerDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.ORCID 0000-0003-0011-115X
Dion GroothofDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.
Charlotte A KeyzerDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.
Coby EelderinkDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.ORCID 0000-0002-1602-2752
Tim J KnobbeDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.ORCID 0000-0003-3246-3192
Adrian PostDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.ORCID 0000-0001-8645-1627
Marco van LondenDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.ORCID 0000-0001-7145-3240
Michele F EisengaDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.ORCID 0000-0002-2484-6233
TransplantLines InvestigatorsUniversity Medical Center Groningen Transplant Center, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.
Leon J SchurgersDepartment of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), University of Maastricht, 6200 MD Maastricht, The Netherlands.ORCID 0000-0001-7867-6957
Stefan P BergerDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.
Martin H de BorstDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.ORCID 0000-0002-4127-8733
Stephan J L BakkerDepartment of Internal Medicine, Division of Nephrology, University of Groningen and University Medical Center Groningen, 9700 RB Groningen, The Netherlands.ORCID 0000-0003-3356-6791
University Medical Center Groningen · NLMaastricht University · NL

Funding

Astellas Pharma, Netherlands A1003
6 · The paper itself

Abstract

High circulating dephosphorylated (dp) uncarboxylated (uc) matrix Gla protein (MGP) and uc osteocalcin (OC) concentrations are regarded as markers of vitamin K-deficiency. However, because MGP and OC are small molecules, they may potentially pass the glomerulus, and their blood concentrations may strongly depend on kidney function. However, many studies with vitamin K-status parameters do not structurally adjust for baseline kidney function, and detailed studies on kidney function-dependence of vitamin K-status markers are lacking. We therefore measured plasma dp-ucMGP using a chemiluminescent assay in 578 kidney transplant recipients (41% females, age 56 ± 13y, 7.5 (3.2 to 13.7)y after transplantation, eGFR 49 ± 17 mL/min/1.73 m

Indexed as

Kidney TransplantationBiological Specimen BanksBiomarkersCohort StudiesCross-Sectional StudiesFemaleHumansKidneyLuminescent MeasurementsMaleMiddle AgedNetherlandsPostoperative ComplicationsProspective StudiesVitamin KVitamin K DeficiencyBiomarkersVitamin Kkidney functionkidney transplantmatrix Gla proteinosteocalcinvascular calcificationvitamin K

Identifiers

PMID34578950
PMCPMC8467091
OpenAlexW3197784924

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.