Evidence map›Paper›PMID 33935104›Full record

ArticleJournal of Parkinson's disease2021

Glucocerebrosidase Activity is Reduced in Cryopreserved Parkinson's Disease Patient Monocytes and Inversely Correlates with Motor Severity.

Laura P Hughes, Marilia M M Pereira, Deborah A Hammond, John B Kwok, Glenda M Halliday, Simon J G Lewis, Nicolas Dzamko

Open access · hybridAbstract read
In one paragraph

Article in Journal of Parkinson's disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

17 citing papers in PubMed, 33 citations in OpenAlex.

  1. Review
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  3. Parkinson's-Linked LRRK2 and GBA1 Mutations Modulate the Peripheral Immune Response to Pseudomonas aeruginosa.Movement disorders : official journal of the Movement Disorder Society · 2026
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  10. Live cellFrontiers in cellular neuroscience · 2023
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  13. 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

7 authors at 1 institution in 1 country.

Laura P HughesBrain and Mind Centre, Faculty of Medicine and Health, The University of Sydney School of Medical Sciences, Camperdown, NSW, Australia.
Marilia M M PereiraBrain and Mind Centre, Faculty of Medicine and Health, The University of Sydney School of Medical Sciences, Camperdown, NSW, Australia.
Deborah A HammondBrain and Mind Centre, Faculty of Medicine and Health, The University of Sydney School of Medical Sciences, Camperdown, NSW, Australia.
John B KwokBrain and Mind Centre, Faculty of Medicine and Health, The University of Sydney School of Medical Sciences, Camperdown, NSW, Australia.
Glenda M HallidayBrain and Mind Centre, Faculty of Medicine and Health, The University of Sydney School of Medical Sciences, Camperdown, NSW, Australia.
Simon J G LewisBrain and Mind Centre, Faculty of Medicine and Health, The University of Sydney School of Medical Sciences, Camperdown, NSW, Australia.
Nicolas DzamkoBrain and Mind Centre, Faculty of Medicine and Health, The University of Sydney School of Medical Sciences, Camperdown, NSW, Australia.
The University of Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundReduced activity of lysosomal glucocerebrosidase is found in brain tissue from Parkinson's disease patients. Glucocerebrosidase is also highly expressed in peripheral blood monocytes where its activity is decreased in Parkinson's disease patients, even in the absence of GBA mutation.

objectiveTo measure glucocerebrosidase activity in cryopreserved peripheral blood monocytes from 30 Parkinson's disease patients and 30 matched controls and identify any clinical correlation with disease severity.

methodsFlow cytometry was used to measure lysosomal glucocerebrosidase activity in total, classical, intermediate, and non-classical monocytes. All participants underwent neurological examination and motor severity was assessed by the Movement Disorders Society Unified Parkinson's Disease Rating Scale.

resultsGlucocerebrosidase activity was significantly reduced in the total and classical monocyte populations from the Parkinson's disease patients compared to controls. GCase activity in classical monocytes was inversely correlated to motor symptom severity.

conclusionSignificant differences in monocyte glucocerebrosidase activity can be detected in Parkinson's disease patients using cryopreserved mononuclear cells and monocyte GCase activity correlated with motor features of disease. Being able to use cryopreserved cells will facilitate the larger multi-site trials needed to validate monocyte GCase activity as a Parkinson's disease biomarker.

Indexed as

MonocytesParkinson DiseaseGlucosylceramidaseHumansMental Status and Dementia TestsMutationGlucosylceramidaseglucocerebrosidaseinflammationmonocyteParkinson’s diseasetoll-like receptor

Identifiers

PMID33935104
PMCPMC8461681
OpenAlexW3158138401

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.