Evidence map›Paper›PMID 23404139›Full record

ArticleEuropean radiology2013

Relationship between cognitive impairment and white-matter alteration in Parkinson's disease with dementia: tract-based spatial statistics and tract-specific analysis.

Koji Kamagata, Yumiko Motoi, Hiroyuki Tomiyama, Osamu Abe, Kenji Ito, Keigo Shimoji, Michimasa Suzuki, Masaaki Hori, Atsushi Nakanishi, Tamotsu Sano and 4 more

Abstract readComparative Study
In one paragraph

Article in European radiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 5 pooled it
–field-weighted citation impact
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

55 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
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  6. Article
  7. Article
  8. Article
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  10. Review
  11. Article
  12. Article
  13. PET, SPECT, and MRI imaging for evaluation of Parkinson's disease.American journal of nuclear medicine and molecular imaging · 2024
    Review
  14. Article
  15. Review
  16. White matter changes in Parkinson's disease.NPJ Parkinson's disease · 2023
    Review
  17. Review
  18. Article
  19. Article
  20. Morphological basis of Parkinson disease-associated cognitive impairment: an update.Journal of neural transmission (Vienna, Austria : 1996) · 2022
    Review
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

14 authors.

Koji KamagataDepartment of Radiology, Juntendo University School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan. kkamagat@juntendo.ac.jp
Yumiko Motoi
Hiroyuki Tomiyama
Osamu Abe
Kenji Ito
Keigo Shimoji
Michimasa Suzuki
Masaaki Hori
Atsushi Nakanishi
Tamotsu Sano
Ryohei Kuwatsuru
Keisuke Sasai
Shigeki Aoki
Nobutaka Hattori

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesWe investigated the relationship between white-matter alteration and cognitive status in Parkinson's disease (PD) with and without dementia by using diffusion tensor imaging.

methodsTwenty PD patients, 20 PDD (Parkinson's disease with dementia) patients and 20 age-matched healthy controls underwent diffusion tensor imaging. The mean diffusivity and fractional anisotropy (FA) map of each patient group were compared with those of the control group by using tract-based spatial statistics. Tractography images of the genu of the corpus callosum fibre tracts were generated, and mean diffusivity and FA were measured.

resultsFA values in many major tracts were significantly lower in PDD patients than in control subjects; in the prefrontal white matter and the genu of the corpus callosum they were significantly lower in PDD patients than in PD patients. There was a significant correlation between the Mini-Mental State Examination (MMSE) scores and the FA values of the prefrontal white matter and the genu of the corpus callosum in patients with PD.

conclusionsOur study shows a relationship between cognitive impairment and alteration of the prefrontal white matter and genu of the corpus callosum. These changes may be useful in assessing the onset of dementia in PD patients. KEY POINTS: • Dementia is a common and important non-motor sign of Parkinson's disease (PD). • The neuropathological basis of dementia in PD is not clear. • DTI shows abnormalities in the prefrontal white matter in PD with dementia. • Prefrontal white matter alteration may be useful biomarker of dementia in PD.

Indexed as

AgedAnisotropyBrainBrain MappingCase-Control StudiesCognitionCognition DisordersCorpus CallosumDementiaDiffusion Tensor ImagingFemaleHumansLevodopaMaleMental Status ScheduleMiddle AgedLevodopa

Identifiers

PMID23404139
PMCPMC3674338

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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.