Evidence map›Paper›PMID 32885038›Full record

ArticleNPJ Parkinson's disease2020

Akinetic rigid symptoms are associated with decline in a cortical motor network in Parkinson's disease.

Sarah J Kann, Chiapei Chang, Peter Manza, Hoi-Chung Leung

Abstract read
In one paragraph

Article in NPJ Parkinson's disease, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–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

25 citing papers in PubMed.

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  8. Subregional alterations in corpus callosum is associated with different symptoms in early-stage parkinson's disease.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
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  15. Abnormal cerebellum connectivity patterns related to motor subtypes of Parkinson's disease.Journal of neural transmission (Vienna, Austria : 1996) · 2023
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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

4 authors.

Sarah J KannDepartment of Psychology, Integrative Neuroscience Program, Stony Brook University, Stony Brook, NY USA.ORCID 0000-0002-9447-1465
Chiapei ChangRenaissance School of Medicine, Stony Brook University, Stony Brook, NY USA.
Peter ManzaNational Institute on Alcoholism and Alcohol Abuse, National Institute of Health, Bethesda, MD USA.
Hoi-Chung LeungDepartment of Psychology, Integrative Neuroscience Program, Stony Brook University, Stony Brook, NY USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The akinetic/rigid (AR) motor subtype of Parkinson's Disease is associated with increased rates of motor and cognitive decline. Cross-sectional studies examining the neural correlates of AR have found abnormalities in both subcortical and cortical networks involved in motor planning and execution relative to controls. To better understand how these cross-sectional findings are implicated in the unique decline associated with the AR subtype, we examined whether baseline AR symptoms are associated with longitudinal decline of these networks, in contrast to other motor symptoms such as tremor. Using whole brain multiple regression analyses we found that worse AR symptoms at baseline were associated with greater gray matter loss over four years in superior parietal and paracentral lobules and motor cortex. These regions also showed altered connectivity patterns with posterior parietal, premotor, pre-supplementary motor area and dorsolateral prefrontal regions in association with AR symptoms across subjects. Thus, AR symptoms are related to gray matter decline and aberrant functional connectivity in a network of frontal-parietal regions critical for motor planning and execution. These structural and functional abnormalities may therefore be implicated in the more aggressive course of decline associated with the AR relative to tremor-dominant subtype.

Indexed as

Basal gangliaParkinson's disease

Identifiers

PMID32885038
PMCPMC7445297

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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.