Evidence map›Paper›PMID 26410743›Full record

ArticleJournal of neurology2015

Morphometric changes in the reward system of Parkinson's disease patients with impulse control disorders.

Clelia Pellicano, Flavia Niccolini, Kit Wu, Sean S O'Sullivan, Andrew D Lawrence, Andrew J Lees, Paola Piccini, Marios Politis

Abstract read
PubMed Publisher
In one paragraph

Article in Journal of neurology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 3 pooled it
3.6field-weighted citation impact, top 8% 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

24 citing papers in PubMed, 3 syntheses or guidelines pooled it, 49 citations in OpenAlex.

  1. Pooled it
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  12. Review
  13. Preservation of brain metabolism in recently diagnosed Parkinson's impulse control disorders.European journal of nuclear medicine and molecular imaging · 2020
    Article
  14. Brain Imaging and Impulse Control Disorders in Parkinson's Disease.Current neurology and neuroscience reports · 2019
    Review
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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

8 authors at 5 institutions in 2 countries.

Clelia PellicanoDivision of Brain Sciences, Neurology Imaging Unit, Centre of Neuroinflammation and Neurodegeneration, Hammersmith Campus, Imperial College London, London, UK.
Flavia NiccoliniDivision of Brain Sciences, Neurology Imaging Unit, Centre of Neuroinflammation and Neurodegeneration, Hammersmith Campus, Imperial College London, London, UK.
Kit WuDivision of Brain Sciences, Neurology Imaging Unit, Centre of Neuroinflammation and Neurodegeneration, Hammersmith Campus, Imperial College London, London, UK.
Sean S O'SullivanReta Lila Weston Institute of Neurological Studies, University College London, London, UK.
Andrew D LawrenceCardiff University Brain Research Imaging Centre (CUBRIC) and School of Psychology, Cardiff University, Cardiff, UK.
Andrew J LeesReta Lila Weston Institute of Neurological Studies, University College London, London, UK.
Paola PicciniDivision of Brain Sciences, Neurology Imaging Unit, Centre of Neuroinflammation and Neurodegeneration, Hammersmith Campus, Imperial College London, London, UK.
Marios PolitisDivision of Brain Sciences, Neurology Imaging Unit, Centre of Neuroinflammation and Neurodegeneration, Hammersmith Campus, Imperial College London, London, UK. marios.politis@kcl.ac.uk.
Imperial College London · GBCardiff University · GBKing's College London · GBSapienza University of Rome · ITUniversity College London · GB

Funding

Parkinson's UK G-1303Parkinson's UK J-0704
6 · The paper itself

Abstract

Impulse control disorders (ICDs) occur in a subset of patients with Parkinson's disease (PD) who are receiving dopamine replacement therapy. In this study, we aimed to investigate structural abnormalities within the mesocortical and limbic cortices and subcortical structures in PD patients with ICDs. We studied 18 PD patients with ICDs, 18 PD patients without ICDs and a group of 24 age and sex-matched healthy controls. Cortical thickness (CTh) and subcortical nuclei volume analyses were carried out using the automated surface-based analysis package FreeSurfer (version 5.3.0). We found significant differences in MRI measures between the three groups. There was volume loss in the nucleus accumbens of both PD patients with ICDs and without ICDs compared to the control group. In addition, PD patients with ICDs showed significant atrophy in caudate, hippocampus and amygdala compared to the group of healthy controls. PD patients with ICDs had significant increased cortical thickness in rostral anterior cingulate cortex and frontal pole compared to PD patients without ICDs. Cortical thickness in rostral anterior cingulate and frontal pole was increased in PD patients with ICDs compared to the control group, but the differences failed to reach corrected levels of statistical significance. PD patients with ICDs showed increased cortical thickness in medial prefrontal regions. We speculate that these findings reflect either a pre-existing neural trait vulnerability to impulsivity or the expression of a maladaptive synaptic plasticity under non-physiological dopaminergic stimulation.

Indexed as

RewardAdultAgedAmygdalaCaudate NucleusCorpus StriatumDisruptive, Impulse Control, and Conduct DisordersFemaleHippocampusHumansLimbic SystemMagnetic Resonance ImagingMaleMiddle AgedNucleus AccumbensParkinson DiseaseCortical thicknessImpulse control disordersMRIParkinson’s disease

Identifiers

PMID26410743
OpenAlexW1748266196

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.