Evidence map›Paper›PMID 31313056›Full record

ArticleJournal of molecular neuroscience : MN2019

Common Polymorphisms in Genes Related to Vitamin D Metabolism Affect the Response of Cognitive Abilities to Vitamin D Supplementation.

Afsane Bahrami, Sayyed Saeid Khayyatzadeh, Najmeh Jaberi, Maryam Tayefi, Farzaneh Mohammadi, Gordon A Ferns, Hamid Reza Sadeghnia, Majid Ghayour-Mobarhan

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Article in Journal of molecular neuroscience : MN, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.9field-weighted citation impact, top 26% 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

2 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
  2. 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

8 authors at 4 institutions in 2 countries.

Afsane BahramiCellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran.
Sayyed Saeid KhayyatzadehDepartment of Nutrition, Faculty of Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Najmeh JaberiMetabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
Maryam TayefiClinical Research Unit, Mashhad University of Medical Sciences, Mashhad, Iran.
Farzaneh MohammadiDepartment of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Gordon A FernsDivision of Medical Education, Brighton & Sussex Medical School, Falmer, Brighton, Sussex, BN1 9PH, UK.
Hamid Reza SadeghniaPharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran. SadeghniaHR@mums.ac.ir.
Majid Ghayour-MobarhanMetabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. ghayourm@mums.ac.ir.ORCID http://orcid.org/0000-0002-2482-2450
Mashhad University of Medical Sciences · IRBirjand University of Medical Sciences · IRBrighton and Sussex Medical School · GBShahid Sadoughi University of Medical Sciences and Health Services · IR

Funding

Mashhad University of Medical Sciences 931188
6 · The paper itself

Abstract

It is possible that vitamin D acts as a neurosteroid and that vitamin D deficiency may have an adverse impact on brain function and cognitive function. There are a few reports that have demonstrated an association between polymorphisms of genes involved in vitamin D metabolism and neurodegenerative disease. We aimed to evaluate the relationship between common, functional vitamin D-associated gene variants and cognitive abilities and to investigate the effect size of this polymorphism on cognitive capabilities associated with high-dose vitamin D supplementation. A total of 319 healthy adolescents received a high dose of vitamin D (50,000 IU)/week for 9 weeks. A questionnaire was used to assess cognitive abilities at baseline and after treatment. The genotypes of the CYP2R1-rs10766197 and GC-rs4588 variants were determined using TaqMan genotyping techniques. At baseline, total cognitive ability scores were higher in the AA group who were homozygous for the uncommon allele, compared with the other (AG and GG) genotypes of the CYP2R1-rs10766197 polymorphism (104.9 ± 27.8 vs. 79.1 ± 38.8 vs. 73.1 ± 25.6; p < 0.001, respectively). During the supplementation period, cognitive ability scores increased in individuals with the AG and GG genotypes, while individuals with a AA genotype did not show significant change in total score after intervention (p = 0.17). For GC SNP (rs4588), no major differences at baseline and trial-net change of cognitive tasks score were observed between the genotypes under three genetic models (p

Indexed as

CognitionPolymorphism, Single NucleotideAdolescentCholestanetriol 26-MonooxygenaseCytochrome P450 Family 2FemaleHumansVitamin DCholestanetriol 26-MonooxygenaseCYP2R1 protein, humanCytochrome P450 Family 2Vitamin DCytochrome P450 familyGroup-specific componentMemoryPlanningVariation

Identifiers

PMID31313056
OpenAlexW2956026968

What OpenQuestion holds

Textmetadata
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.