Evidence map›Paper›PMID 33470460›Full record

ArticleMovement disorders : official journal of the Movement Disorder Society2021

Global and Regional Changes in Perivascular Space in Idiopathic and Familial Parkinson's Disease.

Erin K Donahue, Amjad Murdos, Michael W Jakowec, Nasim Sheikh-Bahaei, Arthur W Toga, Giselle M Petzinger, Farshid Sepehrband

Open access · greenAbstract read
In one paragraph

Article in Movement disorders : official journal of the Movement Disorder Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 1 pooled it
8.9field-weighted citation impact, top 1% 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

67 citing papers in PubMed, 1 synthesis or guideline pooled it, 121 citations in OpenAlex.

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7 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Erin K DonahueDepartment of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
Amjad MurdosStevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
Michael W JakowecDepartment of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
Nasim Sheikh-BahaeiDepartment of Radiology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
Arthur W TogaStevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
Giselle M PetzingerDepartment of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
Farshid SepehrbandStevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
University of Southern California · US

Funding

USCADRC Diversity Supplement PachicanoP30AG066530 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI HELENA Chang CHUI, ARTHUR W TOGA · 2020 to 2026
$27.8M
The Aging Brain: Vasculature, Ischemia, and BehaviorP01AG012435 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI VINTERS, HARRY V. · 1994 to 2012
$26.4M
TR&D3: Intrinsic Surface MappingP41EB015922 · NIBIB · UNIVERSITY OF SOUTHERN CALIFORNIA · PI VAN HORN, JOHN DARRELL · 2012 to 2022
$14.1M
NIA NIH HHS P01 AG012435NIA NIH HHS P30 AG066530NIBIB NIH HHS P41 EB015922
6 · The paper itself

Abstract

backgroundThe glymphatic system, including the perivascular space (PVS), plays a critical role in brain homeostasis. Although mounting evidence from Alzheimer's disease has supported the potential role of PVS in neurodegenerative disorders, its contribution in Parkinson's disease (PD) has not been fully elucidated. Although idiopathic (IPD) and familial PD (FPD) share similar pathophysiology in terms of protein aggregation, the differential impact of PVS on PD subtypes remains unknown. Our objective was to examine the differences in PVS volume fraction in IPD and FPD compared to healthy controls (HCs) and nonmanifest carriers (NMCs).

methodsA total of 470 individuals were analyzed from the Parkinson's Progression Markers Initiative database, including (1) IPD (n = 179), (2) FPD (LRRK2 [leucine-rich repeat kinase 2], glucocerebrosidase, or α-synuclein) (n = 67), (3) NMC (n = 101), and (4) HCs (n = 84). Total PVS volume fraction (%) was compared using parcellation and quantitation within greater white matter volume at global and regional levels in all cortical and subcortical white matter.

resultsThere was a significant increase in global and regional PVS volume fraction in PD versus non-PD, particularly in FPD versus NMC and LRRK2 FPD versus NMC. Regionally, FPD and NMC differed in the medial orbitofrontal region, as did LRRK2 FPD versus NMC. Non-PD and PD differed in the medial orbitofrontal region and the banks of the superior temporal regions. IPD and FPD differed in the cuneus and lateral occipital regions.

conclusionsOur findings support the role of PVS in PD and highlight a potentially significant contribution of PVS to the pathophysiology of FPD, particularly LRRK2. © 2021 International Parkinson and Movement Disorder Society.

Indexed as

Glymphatic SystemParkinson Diseasealpha-SynucleinHumansLeucine-Rich Repeat Serine-Threonine Protein Kinase-2Mutationalpha-SynucleinLeucine-Rich Repeat Serine-Threonine Protein Kinase-2imaging; perivascular spaces; α-synuclein; leucine-rich repeat kinase 2; glucocerebrosidase

Identifiers

PMID33470460
PMCPMC8127386
OpenAlexW3125874714

What OpenQuestion holds

Textmetadata
LicenceTDM
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.