Evidence map›Paper›PMID 28587068›Full record

ArticleNutrients2017

Genetic Variants Involved in One-Carbon Metabolism: Polymorphism Frequencies and Differences in Homocysteine Concentrations in the Folic Acid Fortification Era.

Josiane Steluti, Aline M Carvalho, Antonio A F Carioca, Andreia Miranda, Gilka J F Gattás, Regina M Fisberg, Dirce M Marchioni

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

18 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Frontiers in nutrition · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. "Unimportant" Molecules?-Part 1.Integrative medicine (Encinitas, Calif.) · 2021
    Article
  13. Article
  14. 1-C Metabolism-Serine, Glycine, Folates-In Acute Myeloid Leukemia.Pharmaceuticals (Basel, Switzerland) · 2021
    Review
  15. Correlation Analysis BetweenFrontiers in oncology · 2021
    Article
  16. Article
  17. Article
  18. 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

7 authors at 1 institution in 1 country.

Josiane StelutiDepartment of Nutrition, School of Public Health, Sao Paulo University, Avenida Doutor Arnaldo, 715-Cerqueira César, São Paulo-SP, São Paulo 01246-904, Brazil. jsteluti@usp.br.
Aline M CarvalhoDepartment of Nutrition, School of Public Health, Sao Paulo University, Avenida Doutor Arnaldo, 715-Cerqueira César, São Paulo-SP, São Paulo 01246-904, Brazil. aline.carvalho.usp@gmail.com.
Antonio A F CariocaDepartment of Nutrition, School of Public Health, Sao Paulo University, Avenida Doutor Arnaldo, 715-Cerqueira César, São Paulo-SP, São Paulo 01246-904, Brazil. nutriaugusto@gmail.com.
Andreia MirandaDepartment of Nutrition, School of Public Health, Sao Paulo University, Avenida Doutor Arnaldo, 715-Cerqueira César, São Paulo-SP, São Paulo 01246-904, Brazil. andreia.am.miranda@gmail.com.
Gilka J F GattásDepartment of Legal Medicine, Bioethics and Occupational Health, School of Medicine, University of São Paulo, Avenida Doutor Arnaldo, 455-Cerqueira César, São Paulo-SP, São Paulo 01246-903, Brazil. gfgattas@usp.br.
Regina M FisbergDepartment of Nutrition, School of Public Health, Sao Paulo University, Avenida Doutor Arnaldo, 715-Cerqueira César, São Paulo-SP, São Paulo 01246-904, Brazil. rfisberg@usp.br.
Dirce M MarchioniDepartment of Nutrition, School of Public Health, Sao Paulo University, Avenida Doutor Arnaldo, 715-Cerqueira César, São Paulo-SP, São Paulo 01246-904, Brazil. marchioni@usp.br.
Universidade de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Folate and other B vitamins are essential co-factors of one-carbon metabolism, and genetic variants, such as polymorphisms, can alter the metabolism. Furthermore, the adoption of food fortification with folic acid showed a decrease of homocysteine concentration. The aim of this study was to investigate the frequencies of the polymorphisms of enzymes and carrier proteins involved in one-carbon metabolism, and to evaluate homocysteine concentrations in the presence of these genetic variants in a population exposed to mandatory food fortification with folic acid. Using data from a population-based cross-sectional study in São Paulo, Brazil, the study population comprised 750 participants above 12 years of age of both genders. A linear regression model was used to evaluate the homocysteine concentrations according to genetic variants and folate level. The results showed that the minor allelic frequencies were 0.33 for MTHFR (rs1801133), 0.24 for MTHFR (rs1801131), 0.19 for MTR (rs1805087), 0.42 for MTRR (rs1801394), 0.46 for RFC1 (rs1051266), and 0.47 for DHFR (19-bp deletion). The genetic variants of MTHFR 677C>T, MTRR 66A>G and RFC-1 80G>A were different according to race. The homocysteine concentrations increased in the CT and TT compared to CC genotypes of polymorphism

Indexed as

Polymorphism, Genetic5-Methyltetrahydrofolate-Homocysteine S-MethyltransferaseCross-Sectional StudiesDiet SurveysFemaleFerredoxin-NADP ReductaseFolic AcidFood, FortifiedGenotypeHomocysteineHumansMaleMethylenetetrahydrofolate Reductase (NADPH2)Middle AgedReplication Protein C5-Methyltetrahydrofolate-Homocysteine S-MethyltransferaseFerredoxin-NADP ReductaseFolic AcidHomocysteinemethionine synthase reductaseMethylenetetrahydrofolate Reductase (NADPH2)MTHFR protein, humanMTR protein, humanReplication Protein CRFC1 protein, humanfolic acid fortificationgenetic variantshomocysteineone-carbon metabolismpolymorphisms

Identifiers

PMID28587068
PMCPMC5490518
OpenAlexW2620549121

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.