Evidence map›Paper›PMID 22760556›Full record

ArticleTranslational psychiatry2012

Epigenetic modifications in frontal cortex from Alzheimer's disease and bipolar disorder patients.

J S Rao, V L Keleshian, S Klein, S I Rapoport

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Translational psychiatry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02272010 (Targeted Alterations in n-3 and n-6 Fatty Acids for the Management of Mood Variability in the Maintenance Phase of Bipolar Disorder), which is not on this map. Cited by 139 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
139citing papers in PubMed, 2 pooled it
10.7field-weighted citation impact, top 1% 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.

NCT02272010 nacompletednot on this mapstarted 2014, after this paper: background citation

Targeted Alterations in n-3 and n-6 Fatty Acids for the Management of Mood Variability in the Maintenance Phase of Bipolar Disorder

TypeinterventionalSponsorMilton S. Hershey Medical CenterRan2014 to 2019Enrolled83ConditionsBipolar DisorderArmsExperimental Diet, Comparator Diet
3 · Its place in the literature

Who cites it

139 citing papers in PubMed, 2 syntheses or guidelines pooled it, 300 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Review
  6. Review
  7. Review
  8. Epigenetic Mechanisms of Suicidal Behavior Formation: A Review.Medical journal of the Islamic Republic of Iran · 2026
    Review
  9. Article
  10. Article
  11. Review
  12. Fumonisin BEpigenetics · 2025
    Article
  13. Burden of psychiatric disease inversely correlates with Alzheimer's age at onset.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  14. International journal of molecular sciences · 2025
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Review

79 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 1 country.

J S RaoBrain Physiology and Metabolism Section, National Institute on Aging, National Institutes of Health, Bethesda, MD 20892, USA. jrao@mail.nih.gov
V L Keleshian
S Klein
S I Rapoport
Institute on Aging · USNational Institutes of Health · US

Funding

A Natonal Resource for Postmortem Brain ResearchR24MH068855 · NIMH · MC LEAN HOSPITAL (BELMONT, MA) · PI BENES, FRANCINE M. · 2003 to 2012
$14.8M
Lipids in Human Brain DiseaseZIAAG000428 · NIA · NATIONAL INSTITUTE ON AGING · PI RAPOPORT, STANLEY I. · 2009 to 2016
$2.6M
Intramural NIH HHSNIMH NIH HHS R24 MH068855
6 · The paper itself

Abstract

Alzheimer's disease (AD) and bipolar disorder (BD) are progressive brain disorders. Upregulated mRNA and protein levels of neuroinflammatory and arachidonic acid (AA) markers with loss of synaptic markers (synaptophysin and drebrin) have been reported in brain tissue from AD and BD patients. We hypothesized that some of these changes are associated with epigenetic modifications of relevant genes. To test this, we measured gene-specific CpG methylation, global DNA methylation and histone modifications in postmortem frontal cortex from BD (n=10) and AD (n=10) patients and respective age-matched controls (10 per group). AD and BD brains showed several epigenetic similarities, including global DNA hypermethylation, and histone H3 phosphorylation. These changes were associated with hypo- and hypermethylation of CpG islands in cyclooxygenase-2 and brain-derived neurotrophic factor promoter regions, respectively. Only the AD brain showed hyper- and hypomethylated CpG islands in promoter regions for cAMP response element-binding protein and nuclear transcription factor kappa B genes, respectively. Only the BD brain demonstrated increased global histone H3 acetylation and hypermethylation of the promotor region for the drebrin-like protein gene. There was no significant epigenetic modification for 12-lipooxygenase or p450 epoxygenase in either illness. Many observed epigenetic changes were inversely related to respective changes in mRNA and protein levels. These epigenetic modifications involving neuroinflammatory, AA cascade and synaptic markers may contribute to progression in AD and BD and identify new targets for drug development.

Indexed as

Epigenesis, GeneticAgedAlzheimer DiseaseArachidonic AcidBipolar DisorderCpG IslandsDNA MethylationFemaleFrontal LobeHistonesHumansMaleMiddle AgedPromoter Regions, GeneticArachidonic AcidHistones

Identifiers

PMID22760556
PMCPMC3410632
OpenAlexW1974119296

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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.