Evidence mapPaperPMID 42421296Full record

SynthesisBioMed research international2026

The Association Between Serum α-Tocopherol and Pathogenesis of Multiple Sclerosis: A Systematic Review and Meta-Analysis of Case-Control Studies.

Hamid Abbasi, Behnaz Ahmadi, Navid Sherafati, Reza Ansarian, Seyedyashar Pourebrahimian Leilabadi, Sina Hamzehzadeh, Reyhane Dehzadeh, Mahnaz Talebi, Sarvin Sanaie, Leila Nikniaz and 1 more

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in BioMed research international, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed, 1 pooled it
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

1 citing paper in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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

11 authors.

Hamid AbbasiStudent Research Committee, Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran, sbmu.ac.ir.ORCID https://orcid.org/0009-0007-5669-1591
Behnaz AhmadiNeurosciences Research Center (NSRC), Tabriz University of Medical Sciences, Tabriz, Iran, tbzmed.ac.ir.ORCID https://orcid.org/0009-0001-9566-3661
Navid SherafatiDepartment of Nutrition, School of Health and Nutrition, Yasuj University of Medical Sciences, Yasuj, Iran, yums.ac.ir.ORCID https://orcid.org/0000-0002-0388-2155
Reza AnsarianStudent Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran, tbzmed.ac.ir.ORCID https://orcid.org/0009-0007-1106-0948
Seyedyashar Pourebrahimian LeilabadiResearch Center for Evidence-Based Medicine, Iranian EBM Centre: A Joanna Briggs Institute (JBI) Center of Excellence, Tabriz University of Medical Sciences, Tabriz, Iran, tbzmed.ac.ir.ORCID https://orcid.org/0009-0006-7127-8052
Sina HamzehzadehStudent Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran, tbzmed.ac.ir.ORCID https://orcid.org/0000-0001-5344-4885
Reyhane DehzadehStudent Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran, tbzmed.ac.ir.ORCID https://orcid.org/0009-0004-8777-2077
Mahnaz TalebiNeurosciences Research Center (NSRC), Tabriz University of Medical Sciences, Tabriz, Iran, tbzmed.ac.ir.ORCID https://orcid.org/0000-0002-7613-3913
Sarvin SanaieResuscitation and Critical Care Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran, tbzmed.ac.ir.ORCID https://orcid.org/0000-0003-2325-5631
Leila NikniazTabriz Health Services Management Research Center, Tabriz University of Medical Sciences, Tabriz, Iran, tbzmed.ac.ir.ORCID https://orcid.org/0000-0003-2951-936X
Amirreza NaseriResearch Center for Integrative Medicine in Aging, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran, tbzmed.ac.ir.ORCID https://orcid.org/0000-0001-9723-0109

Funding

Tabriz University of Medical Sciences 72313
6 · The paper itself

Abstract

backgroundOxidative stress is a key pathological mechanism of multiple sclerosis (MS) and α-tocopherol is recognized as a primary chain-breaking antioxidant. This study is aimed at investigating the relationship between serum α-tocopherol and the pathogenesis of MS

methodsThis systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement and the Joanna Briggs Institute (JBI) manual for evidence synthesis. Scopus, PubMed, Web of Science, and Embase were searched in March 2025. The risk of bias was evaluated using the critical appraisal tool developed by JBI. All statistical analyses were performed with comprehensive meta-analysis software (CMA3).

resultsOut of 506 records evaluated during the title/abstract screening phase, five case-control studies were included. Studies encompassed a total of 389 participants, comprising 211 individuals diagnosed with MS and 178 healthy controls. The levels of α-tocopherol were found to be lower in MS patients compared to the healthy group (standardized mean difference [SMD] = -1.17; 95% CI: -2.02, -0.31; p = 0.007, I DISCUSSION: Current evidence supports the possible association of serum α-tocopherol and MS pathogenesis; however, considering the restricted number of included studies (five papers), the retrospective nature of the studies, and substantial heterogeneity in the conducted quantitative synthesis, multicenter and large-scale prospective studies are recommended.

Indexed as

alpha-TocopherolMultiple SclerosisCase-Control StudiesHumansOxidative Stressalpha-Tocopherolalpha-tocopherolmeta-analysismultiple sclerosisvitamin Eα-tocopherol

Identifiers

PMID42421296
PMCPMC13346587

What Socratic 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 Socratic graph.