Evidence map›Paper›PMID 21521424›Full record

ArticleAddiction biology2011

Prodynorphin CpG-SNPs associated with alcohol dependence: elevated methylation in the brain of human alcoholics.

Malik Mumtaz Taqi, Igor Bazov, Hiroyuki Watanabe, Donna Sheedy, Clive Harper, Kanar Alkass, Henrik Druid, Parri Wentzel, Fred Nyberg, Tatjana Yakovleva and 1 more

Abstract read
In one paragraph

Article in Addiction biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed
7.9field-weighted citation impact, top 2% 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

68 citing papers in PubMed, 133 citations in OpenAlex.

  1. Review
  2. Human genetics and epigenetics of alcohol use disorder.The Journal of clinical investigation · 2024
    Review
  3. Genetic Variants inGenes · 2024
    Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Review
  10. Epigenetic Neuropharmacology: Drugs Affecting the Epigenome in the Brain.Annual review of pharmacology and toxicology · 2021
    Review
  11. Review
  12. CpG-SNP site methylation regulates allele-specific expression of MTHFD1 gene in type 2 diabetes.Laboratory investigation; a journal of technical methods and pathology · 2020
    Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Neuroepigenetics and addiction.Handbook of clinical neurology · 2018
    Review
  19. Review
  20. Review

8 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

11 authors at 3 institutions in 2 countries.

Malik Mumtaz TaqiThe Division of Biological Research on Drug Dependence, Department of Pharmaceutical Biosciences, Uppsala University, Uppsala, Sweden.
Igor Bazov
Hiroyuki Watanabe
Donna Sheedy
Clive Harper
Kanar Alkass
Henrik Druid
Parri Wentzel
Fred Nyberg
Tatjana Yakovleva
Georgy Bakalkin
Uppsala University · SEKarolinska Institutet · SEUniversity of Sydney · AU

Funding

Brain Tissue Resource Centre for Alcohol ResearchR28AA012725 · NIAAA · UNIVERSITY OF SYDNEY · PI Greg Trevor Sutherland · 2012 to 2026
$7.0M
BRAIN TISSUE RESOURCE CENTER FOR ALCOHOL RESEARCHR24AA012725 · NIAAA · UNIVERSITY OF SYDNEY · PI KRIL, JILLIAN JUNE · 2000 to 2011
$2.2M
NIAAA NIH HHS R24 AA012725NIAAA NIH HHS R28 AA012725
6 · The paper itself

Abstract

The genetic, epigenetic and environmental factors may influence the risk for neuropsychiatric disease through their effects on gene transcription. Mechanistically, these effects may be integrated through regulation of methylation of CpG dinucleotides overlapping with single-nucleotide polymorphisms (SNPs) associated with a disorder. We addressed this hypothesis by analyzing methylation of prodynorphin (PDYN) CpG-SNPs associated with alcohol dependence, in human alcoholics. Postmortem specimens of the dorsolateral prefrontal cortex (dl-PFC) involved in cognitive control of addictive behavior were obtained from 14 alcohol-dependent and 14 control subjects. Methylation was measured by pyrosequencing after bisulfite treatment of DNA. DNA binding proteins were analyzed by electromobility shift assay. Three PDYN CpG-SNPs associated with alcoholism were found to be differently methylated in the human brain. In the dl-PFC of alcoholics, methylation levels of the C, non-risk variant of 3'-untranslated region (3'-UTR) SNP (rs2235749; C > T) were increased, and positively correlated with dynorphins. A DNA-binding factor that differentially targeted the T, risk allele and methylated and unmethylated C allele of this SNP was identified in the brain. The findings suggest a causal link between alcoholism-associated PDYN 3'-UTR CpG-SNP methylation, activation of PDYN transcription and vulnerability of individuals with the C, non-risk allele(s) to develop alcohol dependence.

Indexed as

3' Untranslated RegionsAdultAgedAlcoholismAllelesCpG IslandsDNA MethylationEnkephalinsEpigenomicsGenetic Predisposition to DiseaseGenotypeHumansMalePolymorphism, Single NucleotidePrefrontal CortexProtein Precursors3' Untranslated RegionsEnkephalinspreproenkephalinProtein Precursors

Identifiers

PMID21521424
PMCPMC3391609
OpenAlexW1898039515

What OpenQuestion holds

Textmetadata
LicenceTDM
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.