Evidence map›Paper›PMID 22353757›Full record

ArticleNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2012

Selective DNA methylation of BDNF promoter in bipolar disorder: differences among patients with BDI and BDII.

Claudio D'Addario, Bernardo Dell'Osso, Maria Carlotta Palazzo, Beatrice Benatti, Licia Lietti, Elisabetta Cattaneo, Daniela Galimberti, Chiara Fenoglio, Francesca Cortini, Elio Scarpini and 10 more

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07343739 (Bipolar Disorder Integrative Staging), which is not on this map. Cited by 67 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 6 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.

NCT07343739 active not recruitingnot on this mapstarted 2023, after this paper: background citation

Bipolar Disorder Integrative Staging: Incorporating Biomarkers Into Progression Across Stages

Typeobservational_patient_registrySponsorASST Fatebenefratelli SaccoRan2023 to 2026Enrolled126ConditionsBipolar DisorderArmspsychometric clinical assessment, biological acquisition, neuroimaging data
3 · Its place in the literature

Who cites it

67 citing papers in PubMed, 6 syntheses or guidelines pooled it, 187 citations in OpenAlex.

  1. Pooled it
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  16. Genetic and Epigenetic Markers of Lithium Response.International journal of molecular sciences · 2022
    Review
  17. Review
  18. Intracellular Signaling Cascades in Bipolar Disorder.Current topics in behavioral neurosciences · 2021
    Review
  19. Methylation ofFrontiers in integrative neuroscience · 2021
    Article
  20. Review

7 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

20 authors at 5 institutions in 1 country.

Claudio D'AddarioDepartment of Biomedical Sciences, University of Teramo, Teramo, Italy.
Bernardo Dell'Osso
Maria Carlotta Palazzo
Beatrice Benatti
Licia Lietti
Elisabetta Cattaneo
Daniela Galimberti
Chiara Fenoglio
Francesca Cortini
Elio Scarpini
Beatrice Arosio
Andrea Di Francesco
Manuela Di Benedetto
Patrizia Romualdi
Sanzio Candeletti
Daniela Mari
Luigi Bergamaschini
Nereo Bresolin
Mauro Maccarrone
A Carlo Altamura
Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico · ITUniversity of Milan · ITUniversity of Bologna · ITUniversity of Teramo · ITEuropean Brain Research Institute · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The etiology of bipolar disorder (BD) is still poorly understood, involving genetic and epigenetic mechanisms as well as environmental contributions. This study aimed to investigate the degree of DNA methylation at the promoter region of the brain-derived neurotrophic factor (BDNF) gene, as one of the candidate genes associated with major psychoses, in peripheral blood mononuclear cells isolated from 94 patients with BD (BD I=49, BD II=45) and 52 healthy controls. A significant BDNF gene expression downregulation was observed in BD II 0.53±0.11%; P<0.05), but not in BD I (1.13±0.19%) patients compared with controls (CONT: 1±0.2%). Consistently, an hypermethylation of the BDNF promoter region was specifically found in BD II patients (CONT: 24.0±2.1%; BDI: 20.4±1.7%; BDII: 33.3±3.5%, P<0.05). Of note, higher levels of DNA methylation were observed in BD subjects on pharmacological treatment with mood stabilizers plus antidepressants (34.6±4.2%, predominantly BD II) compared with those exclusively on mood-stabilizing agents (21.7±1.8%; P<0.01, predominantly BD I). Moreover, among the different pharmacological therapies, lithium (20.1±3.8%, P<0.05) and valproate (23.6±2.9%, P<0.05) were associated with a significant reduction of DNA methylation compared with other drugs (35.6±4.6%). Present findings suggest selective changes in DNA methylation of BDNF promoter in subjects with BD type II and highlight the importance of epigenetic factors in mediating the onset and/or susceptibility to BD, providing new insight into the mechanisms of gene expression. Moreover, they shed light on possible mechanisms of action of mood-stabilizing compounds vs antidepressants in the treatment of BD, pointing out that BDNF regulation might be a key target for their effects.

Indexed as

DNA MethylationPromoter Regions, GeneticAdultAgedAntipsychotic AgentsBipolar DisorderBrain-Derived Neurotrophic FactorDown-RegulationFemaleGenetic Predisposition to DiseaseGenotypeHumansMaleMiddle AgedAntipsychotic AgentsBrain-Derived Neurotrophic Factor

Identifiers

PMID22353757
PMCPMC3358733
OpenAlexW1994958608

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.