Evidence map›Paper›PMID 28800743›Full record

ArticleMolecular brain2017

An iTRAQ-based proteomic analysis reveals dysregulation of neocortical synaptopodin in Lewy body dementias.

Arnab Datta, Yuek Ling Chai, Jing Min Tan, Jasinda H Lee, Paul T Francis, Christopher P Chen, Siu Kwan Sze, Mitchell K P Lai

Open access · goldAbstract read
In one paragraph

Article in Molecular brain, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.8field-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

20 citing papers in PubMed, 30 citations in OpenAlex.

  1. Trial
  2. Article
  3. Neuronal Calcium Signaling and Cytoskeletal Dynamics in Neurodegeneration.International journal of molecular sciences · 2026
    Review
  4. Article
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  6. Frontiers in cell and developmental biology · 2023
    Article
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  8. Article
  9. Article
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  11. Review
  12. Article
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  15. Synaptopodin Deficiency Ameliorates Symptoms in the 3xTg Mouse Model of Alzheimer's Disease.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2019
    Article
  16. Article
  17. Article
  18. Article
  19. 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

8 authors at 3 institutions in 3 countries.

Arnab DattaDepartment of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, Singapore 117599, Singapore. arnab.datta@nih.gov.ORCID 0000-0002-9220-7812
Yuek Ling ChaiDepartment of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, Singapore 117599, Singapore.
Jing Min TanDepartment of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, Singapore 117599, Singapore.
Jasinda H LeeDepartment of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, Singapore 117599, Singapore.
Paul T FrancisWolfson Centre for Age-related Diseases, King's College London, Guy's Campus, St Thomas Street, London SE1 1UL, UK.
Christopher P ChenDepartment of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, Singapore 117599, Singapore.
Siu Kwan SzeSchool of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore.
Mitchell K P LaiDepartment of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, Singapore 117599, Singapore. mitchell.lai@dementia-research.org.
National University of Singapore · SGKing's College London · GBNanyang Technological University · SG

Funding

Medical Research Council G0400074
6 · The paper itself

Abstract

Lewy body dementias are the second most common cause of neurodegenerative dementia in the elderly after Alzheimer's disease (AD). The two clinical subgroups of Lewy body dementias, namely, dementia with Lewy bodies (DLB) and Parkinson's disease dementia (PDD), are differentiated by the chronology of cognitive symptoms relative to parkinsonism. At present, there remains a debate on whether DLB and PDD are separate disease entities, or fall within the same spectrum of Lewy body dementias. In this study, we compared the detergent-soluble proteome via an 8-plex isobaric tag for relative and absolute quantitation (iTRAQ) analysis of pooled lysates from the prefrontal cortex (BA9) of DLB (n = 19) and PDD (n = 21) patients matched a priori for amyloid (total Aβ42) burden, semi-quantitative scores for Lewy bodies and neurofibrillary tangles together with age-matched control (n = 21) subjects. A total of 1914 proteins were confidently identified by iTRAQ (false discovery rate = 0%). None of the proteins showed a significant yet opposite regulation in between DLB and PDD when compared to aged controls in the proteomic data set as well as following immunoblot analysis of the pooled and individual lysates involving all 61 subjects. The postsynaptic protein, synaptopodin (SYNPO) was significantly down-regulated in both DLB and PDD subgroups, suggesting a defective synaptic transmission in the demented patients. In conclusion, the largely similar proteome of DLB and PDD matched for amyloid burden suggests that variations in concomitant AD-related pathology, abnormal post-translational modifications or protein-protein interactions, defective intracellular trafficking or misfolding of proteins could play a part in driving the clinically observed differences between these two subgroups of Lewy body dementias. This further indicates that amyloid-targeting therapeutic strategies may show different efficacies in DLB versus PDD.

Indexed as

Isotope LabelingAged, 80 and overAmyloid beta-PeptidesDemographyFemaleHumansImmunoblottingLewy Body DiseaseMaleMicrofilament ProteinsNeocortexProteomicsQuality ControlAmyloid beta-PeptidesMicrofilament ProteinsSYNPO protein, humanAβ42Clinical proteomicsDementia with Lewy bodiesiTRAQLewy body dementiasParkinson’s disease dementiaSynaptopodinβ-amyloid

Identifiers

PMID28800743
PMCPMC5553757
OpenAlexW2743633402

What OpenQuestion holds

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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.