Evidence map›Paper›PMID 33145398›Full record

ArticleNPJ Parkinson's disease2020

Dysfunction in superior frontal gyrus associated with diphasic dyskinesia in Parkinson's disease.

Yu-Ting Shen, Yong-Sheng Yuan, Min Wang, Yan Zhi, Jian-Wei Wang, Li-Na Wang, Ke-Wei Ma, Qian-Qian Si, Ke-Zhong Zhang

Open access · goldAbstract 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 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
1.0field-weighted citation impact, top 19% 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, 23 citations in OpenAlex.

  1. Pooled it
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  5. Update on sleep disorders in advanced Parkinson's disease: a narrative review.Journal of neural transmission (Vienna, Austria : 1996) · 2025
    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

9 authors at 2 institutions in 1 country.

Yu-Ting Shen *Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Yong-Sheng Yuan *Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Min Wang *Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Yan ZhiDepartment of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Jian-Wei WangDepartment of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Li-Na WangDepartment of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Ke-Wei MaDepartment of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Qian-Qian SiDepartment of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Ke-Zhong ZhangDepartment of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.ORCID 0000-0002-4437-1095
Jiangsu Province Hospital · CNChangshu No.1 People's Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alterations in brain function in Parkinson's disease (PD) patients with diphasic dyskinesia have not been investigated. We aimed to explore the alterations in regional brain function. Each of 53 levodopa (LD)-treated PD patients had two resting-state functional magnetic resonance imaging (rs-fMRI) scans in the same morning, before and after taking LD. The regional homogeneity (ReHo) approach was used to reveal local synchronization changes. Two-way factorial repeated measures analysis of covariance, with group as a between-subject factor and LD effect as a within-subject factor, was performed to explore the two main effects and interaction. Interactive analysis was used to show outcomes that combined disease status and LD effect. Spearman's correlations were used to detect associations between interactive brain regions and severity of dyskinetic symptoms, assessed by the Unified Dyskinesia Rating Scale (UDyRS) scores, along with moderation analyses. There was no significant difference in the main group effect analysis. Significantly different clusters obtained from main LD effect analysis were in left caudate nucleus and putamen. ReHo values decreased in the caudate nucleus and increased in the putamen during the ON state after taking LD. Interaction between group and LD effect was found in left medial superior frontal gyrus (mSFG), where there were the lowest ReHo values, and was negatively correlated with UDyRS scores in the diphasic dyskinetic group during the ON state. The relationship was independent of LD dose. Abnormal local synchronization in the mSFG is closely associated with the development of diphasic dyskinesia in PD patients.

Indexed as

Parkinson's disease

Identifiers

PMID33145398
PMCPMC7603392
OpenAlexW3095344897

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.