Evidence map›Paper›PMID 26671551›Full record

ArticleMetabolic brain disease2016

Frontal white matter changes and aggression in methamphetamine dependence.

Katharina Lederer, Jean-Paul Fouche, Don Wilson, Dan J Stein, Anne Uhlmann

Abstract read
PubMed Publisher
In one paragraph

Article in Metabolic brain disease, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 16% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Psychostimulants and social behaviors.Frontiers in pharmacology · 2024
    Review
  5. Article
  6. Article
  7. The neurobiology of drug addiction: cross-species insights into the dysfunction and recovery of the prefrontal cortex.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2022
    Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Brain Microstructure and Impulsivity Differ between Current and Past Methamphetamine Users.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2016
    Article
  14. Persistent Microstructural Deficits of Internal Capsule in One-Year Abstinent Male Methamphetamine Users: a Longitudinal Diffusion Tensor Imaging Study.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2016
    Article
  15. Evaluation and Treatment of the Angry Patient.The primary care companion for CNS disorders · 2016
    Article
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

5 authors at 1 institution in 1 country.

Katharina LedererDepartment of Psychiatry and Mental Health, University of Cape Town, J-Block, Groote Schuur Hospital, Observatory, South Africa.
Jean-Paul FoucheDepartment of Psychiatry and Mental Health, University of Cape Town, J-Block, Groote Schuur Hospital, Observatory, South Africa.
Don WilsonDepartment of Psychiatry and Mental Health, University of Cape Town, J-Block, Groote Schuur Hospital, Observatory, South Africa.
Dan J SteinDepartment of Psychiatry and Mental Health, University of Cape Town, J-Block, Groote Schuur Hospital, Observatory, South Africa.
Anne UhlmannDepartment of Psychiatry and Mental Health, University of Cape Town, J-Block, Groote Schuur Hospital, Observatory, South Africa. uhlmann.aa@gmail.com.ORCID http://orcid.org/0000-0002-1753-7811
University of Cape Town · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chronic methamphetamine (MA) use can lead to white matter (WM) changes and increased levels of aggression. While previous studies have examined WM abnormalities relating to cognitive impairment, associations between WM integrity and aggression in MA dependence remain unclear. Diffusion Tensor Imaging (DTI) was used to investigate WM changes in 40 individuals with MA dependence and 40 matched healthy controls. A region of interest (ROI) approach using tract based spatial statistics (TBSS) in FSL was performed. We compared fractional anisotropy (FA), mean diffusivity (MD), parallel diffusivity (λ║) and perpendicular diffusivity (λ┴) in WM tracts of the frontal brain. A relationship of WM with aggression scores from the Buss & Perry Questionnaire was investigated. Mean scores for anger (p < 0.001), physical aggression (p = 0.032) and total aggression (p = 0.021) were significantly higher in the MA group relative to controls. ROI analysis showed increased MD (U = 439.5, p = 0.001) and λ┴ (U = 561.5, p = 0.021) values in the genu of the corpus callosum, and increased MD (U = 541.5, p = 0.012) values in the right cingulum in MA dependence. None of the WM changes were significantly associated with aggression scores. This study provides evidence of frontal WM changes and increased levels of aggression in individuals with MA dependence. The lack of significant associations between WM and aggressive behaviour may reflect methodological issues in measuring such behaviour, or may indicate that the neurobiology of aggression is not simply correlated with WM damage but is more complex.

Indexed as

Central Nervous System StimulantsMethamphetamineAdolescentAdultAggressionAmphetamine-Related DisordersAngerCorpus CallosumDiagnostic and Statistical Manual of Mental DisordersDiffusion Tensor ImagingFemaleFrontal LobeHumansMaleWhite MatterYoung AdultCentral Nervous System StimulantsMethamphetamineDiffusion tensor imagingDiffusivityFractional anisotropyMicrostructureStimulants

Identifiers

PMID26671551
OpenAlexW2283743971

What OpenQuestion holds

Textmetadata
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.