Evidence map›Paper›PMID 33553487›Full record

ReviewMovement disorders clinical practice2021

Neuroimaging Detectable Differences between Parkinson's Disease Motor Subtypes: A Systematic Review.

Jackson Tyler Boonstra, Stijn Michielse, Yasin Temel, Govert Hoogland, Ali Jahanshahi

Open access · hybridAbstract readReview
In one paragraph

Review in Movement disorders clinical practice, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
2.2field-weighted citation impact, top 9% 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

38 citing papers in PubMed, 58 citations in OpenAlex.

  1. Trial
  2. Impulse Control Disorders Are Independent of Parkinson Disease Motor Subtypes.medRxiv : the preprint server for health sciences · 2026
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  11. The combination of theScientific reports · 2025
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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

5 authors at 1 institution in 1 country.

Jackson Tyler BoonstraDepartment of Neurosurgery, School for Mental Health and Neuroscience (MHeNS) Maastricht University Medical Center Maastricht The Netherlands.ORCID https://orcid.org/0000-0002-6518-3552
Stijn MichielseDepartment of Neurosurgery, School for Mental Health and Neuroscience (MHeNS) Maastricht University Medical Center Maastricht The Netherlands.
Yasin TemelDepartment of Neurosurgery, School for Mental Health and Neuroscience (MHeNS) Maastricht University Medical Center Maastricht The Netherlands.
Govert HooglandDepartment of Neurosurgery, School for Mental Health and Neuroscience (MHeNS) Maastricht University Medical Center Maastricht The Netherlands.
Ali JahanshahiDepartment of Neurosurgery, School for Mental Health and Neuroscience (MHeNS) Maastricht University Medical Center Maastricht The Netherlands.
Maastricht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe neuroanatomical substrates of Parkinson's disease (PD) with tremor-dominance (TD) and those with non-tremor dominance (nTD), postural instability and gait difficulty (PIGD), and akinetic-rigid (AR) are not fully differentiated. A better understanding of symptom specific pathoanatomical markers of PD subtypes may result in earlier diagnosis and more tailored treatment. Here, we aim to give an overview of the neuroimaging literature that compared PD motor subtypes.

methodsA systematic literature review on neuroimaging studies of PD subtypes was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Search terms submitted to the PubMed database included: "Parkinson's disease", "MRI" and "motor subtypes" (TD, nTD, PIGD, AR). The results are first discussed from macro to micro level of organization (i.e., (1) structural; (2) functional; and (3) molecular) and then by applied imaging methodology.

findingsSeveral neuroimaging methods including diffusion imaging and positron emission tomography (PET) distinguish specific PD motor subtypes well, although findings are mixed. Furthermore, our review demonstrates that nTD-PD patients have more severe neuroalterations compared to TD-PD patients. More specifically, nTD-PD patients have deficits within striato-thalamo-cortical (STC) circuitry and other thalamocortical projections related to cognitive and sensorimotor function, while TD-PD patients tend to have greater cerebello-thalamo-cortical (CTC) circuitry dysfunction.

conclusionsBased on the literature, STC and CTC circuitry deficits seem to be the key features of PD and the subtypes. Future research should make greater use of multimodal neuroimaging and techniques that have higher sensitivity in delineating subcortical structures involved in motor diseases.

Indexed as

motor subtypesneuroanatomyneuroimagingParkinson's disease (PD)tremor‐dominant (TD)

Identifiers

PMID33553487
PMCPMC7853198
OpenAlexW3094127500

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.