Evidence map›Paper›PMID 23915182›Full record

ArticleBMC neurology2013

Effects of MTHFR gene polymorphism on the clinical and electrophysiological characteristics of migraine.

Julia E Azimova, Alexey V Sergeev, Liubov A Korobeynikova, Natalia S Kondratieva, Zarema G Kokaeva, Gadji O Shaikhaev, Kirill V Skorobogatykh, Natalia M Fokina, Gyusal R Tabeeva, Eugene A Klimov

Open access · goldAbstract read
In one paragraph

Article in BMC neurology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
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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

10 authors at 3 institutions in 1 country.

Julia E AzimovaDepartment of Neurology and Clinical Neurophysiology, Scientific-Research Centre, Sechenov First Moscow State Medical University, Moscow, Russia. azimova.j@mail.ru
Alexey V Sergeev
Liubov A Korobeynikova
Natalia S Kondratieva
Zarema G Kokaeva
Gadji O Shaikhaev
Kirill V Skorobogatykh
Natalia M Fokina
Gyusal R Tabeeva
Eugene A Klimov
Sechenov University · RULomonosov Moscow State University · RUVavilov Institute of General Genetics · RU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIt was previously shown that the MTHFR gene polymorphism correlated with an increased risk of migraine, particularly migraine with aura. The substitution of cytosine for thymine at the position 677 of the MTHFR gene leads to formation of the thermolabile form of the protein and development of hyperhomocysteinemia, which increases the probability of migraine. The purpose of this study was to determine whether the replacement of C677T in the gene MTHFR influenced any particular symptoms of the disease.

methodsWe have analyzed clinical and electrophysiological characteristics of 83 patients with migraine (migraine with aura (MA), 19 patients, and migraine without aura (MO), 64 patients, according to the ICHD-II (2003)) taking into account their genotypes of C677T variant of MTHFR.

resultsWe have shown that MA was significantly more prevalent among the T-allele carriers (37.2%), as compared to the СС genotype patients (0%), р < 0.0001. Patients with TT genotype were not only more likely to have accompanying symptoms (significant differences were found only for photophobia), but also more sensitive to migraine attack triggers. In RP-VEP test results we observed a trend that the T-allele carriers were presented with the decreased N75/P100 amplitudes and a positive habituation index, as compared to the СС genotype patients.

conclusionsThus, according to our data, the MTHFR genotypes are associated with several clinical and electrophysiological characteristics of migraine.

Indexed as

Genetic Predisposition to DiseaseAdolescentAdultAgedDNA Mutational AnalysisElectroencephalographyEvoked Potentials, VisualGene FrequencyGenotypeHumansMethylenetetrahydrofolate Reductase (NADPH2)Middle AgedMigraine with AuraMigraine without AuraPhotic StimulationPolymorphism, GeneticMethylenetetrahydrofolate Reductase (NADPH2)MTHFR protein, human

Identifiers

PMID23915182
PMCPMC3750291
OpenAlexW2116812978

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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.