Evidence map›Paper›PMID 27973581›Full record

SynthesisPloS one2016

The Role of DNA Methylation and Histone Modifications in Neurodegenerative Diseases: A Systematic Review.

Ke-Xin Wen, Jelena Miliç, Bassem El-Khodor, Klodian Dhana, Jana Nano, Tammy Pulido, Bledar Kraja, Asija Zaciragic, Wichor M Bramer, John Troup and 5 more

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed
6.8field-weighted citation impact, top 3% 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

57 citing papers in PubMed, 120 citations in OpenAlex.

  1. Review
  2. Integration of epigenetics into ecotoxicology: insights and fundamental research needs.Biological reviews of the Cambridge Philosophical Society · 2026
    Review
  3. Article
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  7. Synergistic Antioxidant Effects of C3G-EnrichedInternational journal of molecular sciences · 2025
    Article
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  9. Article
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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

15 authors at 5 institutions in 4 countries.

Ke-Xin WenDepartment of Epidemiology, Erasmus MC, Rotterdam, the Netherlands.
Jelena MiliçDepartment of Epidemiology, Erasmus MC, Rotterdam, the Netherlands.
Bassem El-KhodorResearch and Development, Metagenics, Inc, United States of America.
Klodian DhanaDepartment of Epidemiology, Erasmus MC, Rotterdam, the Netherlands.
Jana NanoDepartment of Epidemiology, Erasmus MC, Rotterdam, the Netherlands.
Tammy PulidoDepartment of Epidemiology, Erasmus MC, Rotterdam, the Netherlands.
Bledar KrajaDepartment of Biomedical Sciences, Faculty of Medicine, University of Medicine, Tirana, Albania.
Asija ZaciragicDepartment of Epidemiology, Erasmus MC, Rotterdam, the Netherlands.
Wichor M BramerMedical Library, Erasmus MC, Rotterdam, The Netherlands.
John TroupResearch and Development, Metagenics, Inc, United States of America.
Rajiv ChowdhuryDepartment of Public Health & Primary Care, Cardiovascular Epidemiology Unit, University of Cambridge, Cambridge, CB1 8RN, United Kingdom.
M Arfam IkramDepartment of Epidemiology, Erasmus MC, Rotterdam, the Netherlands.
Abbas DehghanDepartment of Epidemiology, Erasmus MC, Rotterdam, the Netherlands.
Taulant MukaDepartment of Epidemiology, Erasmus MC, Rotterdam, the Netherlands.
Oscar H FrancoDepartment of Epidemiology, Erasmus MC, Rotterdam, the Netherlands.
Erasmus MC · NLErasmus University Rotterdam · NLPsychogenics (United States) · USUniversity of Cambridge · GBUniversity of Medicine Tirana · AL

Funding

Medical Research Council G0800270
6 · The paper itself

Abstract

importanceEpigenetic modifications of the genome, such as DNA methylation and histone modifications, have been reported to play a role in neurodegenerative diseases (ND) such as Alzheimer's disease (AD) and Parkinson's disease (PD).

objectiveTo systematically review studies investigating epigenetic marks in AD or PD.

methodsEleven bibliographic databases (Embase.com, Medline (Ovid), Web-of-Science, Scopus, PubMed, Cinahl (EBSCOhost), Cochrane Central, ProQuest, Lilacs, Scielo and Google Scholar) were searched until July 11th 2016 to identify relevant articles. We included all randomized controlled trials, cohort, case-control and cross-sectional studies in humans that examined associations between epigenetic marks and ND. Two independent reviewers, with a third reviewer available for disagreements, performed the abstract and full text selection. Data was extracted using a pre-designed data collection form.

resultsOf 6,927 searched references, 73 unique case-control studies met our inclusion criteria. Overall, 11,453 individuals were included in this systematic review (2,640 AD and 2,368 PD outcomes). There was no consistent association between global DNA methylation pattern and any ND. Studies reported epigenetic regulation of 31 genes (including cell communication, apoptosis, and neurogenesis genes in blood and brain tissue) in relation to AD and PD. Methylation at the BDNF, SORBS3 and APP genes in AD were the most consistently reported associations. Methylation of α-synuclein gene (SNCA) was also found to be associated with PD. Seven studies reported histone protein alterations in AD and PD.

conclusionMany studies have investigated epigenetics and ND. Further research should include larger cohort or longitudinal studies, in order to identify clinically significant epigenetic changes. Identifying relevant epigenetic changes could lead to interventional strategies in ND.

Indexed as

DNA MethylationAlzheimer DiseaseBiasCross-Sectional StudiesEpigenesis, GeneticGenome, HumanHistone CodeHistonesHumansInflammationNeurodegenerative DiseasesParkinson DiseaseRandomized Controlled Trials as TopicHistones

Identifiers

PMID27973581
PMCPMC5156363
OpenAlexW2567373596

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.