Evidence map›Paper›PMID 25909085›Full record

ArticleAnnals of clinical and translational neurology2015

Methionine increases BDNF DNA methylation and improves memory in epilepsy.

R Ryley Parrish, Susan C Buckingham, Katherine L Mascia, Jarvis J Johnson, Michal M Matyjasik, Roxanne M Lockhart, Farah D Lubin

Open access · goldAbstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

28 citing papers in PubMed, 53 citations in OpenAlex.

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  18. Extracellular Spermine Activates DNA Methyltransferase 3A and 3B.International journal of molecular sciences · 2019
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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

7 authors at 2 institutions in 1 country.

R Ryley ParrishDepartment of Neurobiology, University of Alabama - Birmingham Birmingham, Alabama.
Susan C BuckinghamDepartment of Neurobiology, University of Alabama - Birmingham Birmingham, Alabama.
Katherine L MasciaDepartment of Neurobiology, University of Alabama - Birmingham Birmingham, Alabama.
Jarvis J JohnsonDepartment of Neurobiology, University of Alabama - Birmingham Birmingham, Alabama.
Michal M MatyjasikDepartment of Chemistry, Weber State University Ogden, Utah.
Roxanne M LockhartDepartment of Neurobiology, University of Alabama - Birmingham Birmingham, Alabama.
Farah D LubinDepartment of Neurobiology, University of Alabama - Birmingham Birmingham, Alabama.
University of Alabama at Birmingham · USWeber State University · US

Funding

UAB MENTAL RETARDATION RESEARCH CENTER (MRRC)P30HD038985 · NICHD · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI BRENNER, MICHAEL · 2000 to 2012
$8.6M
Chromatin remodeling mechanisms of gene transcription in memoryR01MH097909 · NIMH · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI LUBIN, FARAH DOMINIQUE · 2012 to 2016
$1.9M
Epigenetic Mechanisms of Gene Regulation in Long-Term Memory FormationR00MH082106 · NIMH · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI LUBIN, FARAH DOMINIQUE · 2009 to 2011
$737k
Chromatin Remodeling Mechanism of Gene Transcription in MemoryR56MH097909 · NIMH · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI LUBIN, FARAH DOMINIQUE · 2018 to 2018
$502k
Epigenetic Mechanisms in Epilepsy-Related Memory FormationR21NS090250 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI LUBIN, FARAH DOMINIQUE · 2015 to 2016
$404k
NF-kB activation in epilepsyF32NS048811 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI LUBIN, FARAH D · 2005 to 2007
$117k
Epigenetic Mechanisms of Gene Regulation in Long-Term Memory FormationK99MH082106 · NIMH · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI LUBIN, FARAH DOMINIQUE · 2008 to 2008
$84k
NICHD NIH HHS P30 HD038985NIMH NIH HHS K99 MH082106NIMH NIH HHS R00 MH082106NIMH NIH HHS R01 MH097909NIMH NIH HHS R56 MH097909NINDS NIH HHS F32 NS048811NINDS NIH HHS R21 NS090250
6 · The paper itself

Abstract

objectiveTemporal lobe epilepsy (TLE) patients exhibit signs of memory impairments even when seizures are pharmacologically controlled. Surprisingly, the underlying molecular mechanisms involved in TLE-associated memory impairments remain elusive. Memory consolidation requires epigenetic transcriptional regulation of genes in the hippocampus; therefore, we aimed to determine how epigenetic DNA methylation mechanisms affect learning-induced transcription of memory-permissive genes in the epileptic hippocampus.

methodsUsing the kainate rodent model of TLE and focusing on the brain-derived neurotrophic factor (Bdnf) gene as a candidate of DNA methylation-mediated transcription, we analyzed DNA methylation levels in epileptic rats following learning. After detection of aberrant DNA methylation at the Bdnf gene, we investigated functional effects of altered DNA methylation on hippocampus-dependent memory formation in our TLE rodent model.

resultsWe found that behaviorally driven BdnfDNA methylation was associated with hippocampus-dependent memory deficits. Bisulfite sequencing revealed that decreased BdnfDNA methylation levels strongly correlated with abnormally high levels of BdnfmRNA in the epileptic hippocampus during memory consolidation. Methyl supplementation via methionine (Met) increased BdnfDNA methylation and reduced BdnfmRNA levels in the epileptic hippocampus during memory consolidation. Met administration reduced interictal spike activity, increased theta rhythm power, and reversed memory deficits in epileptic animals. The rescue effect of Met treatment on learning-induced BdnfDNA methylation, Bdnf gene expression, and hippocampus-dependent memory, were attenuated by DNA methyltransferase blockade.

interpretationOur findings suggest that manipulation of DNA methylation in the epileptic hippocampus should be considered as a viable treatment option to ameliorate memory impairments associated with TLE.

Identifiers

PMID25909085
PMCPMC4402085
OpenAlexW2040971957

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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.