Evidence map›Paper›PMID 36336935›Full record

ArticleJournal of Alzheimer's disease : JAD2023

Pathological (Dis)Similarities in Neuronal Exosome-Derived Synaptic and Organellar Marker Levels Between Alzheimer's Disease and Frontotemporal Dementia.

Geethu Krishna, Rashmi Santhoshkumar, Palanimuthu Thangaraju Sivakumar, Suvarna Alladi, Anita Mahadevan, Ajit B Dahale, Faheem Arshad, Sarada Subramanian

Open access · bronzeAbstract read
In one paragraph

Article in Journal of Alzheimer's disease : JAD, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 28% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
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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 1 institution in 1 country.

Geethu KrishnaDepartment of Neurochemistry, National Institute of Mental Health & Neurosciences, Bengaluru, India.
Rashmi SanthoshkumarDepartment of Neuropathology, National Institute of Mental Health & Neurosciences, Bengaluru, India.
Palanimuthu Thangaraju SivakumarDepartment of Psychiatry, National Institute of Mental Health & Neurosciences, Bengaluru, India.
Suvarna AlladiDepartment of Neurology, National Institute of Mental Health & Neurosciences, Bengaluru, India.
Anita MahadevanDepartment of Neuropathology, National Institute of Mental Health & Neurosciences, Bengaluru, India.
Ajit B DahaleDepartment of Psychiatry, National Institute of Mental Health & Neurosciences, Bengaluru, India.
Faheem ArshadDepartment of Neurology, National Institute of Mental Health & Neurosciences, Bengaluru, India.
Sarada SubramanianDepartment of Neurochemistry, National Institute of Mental Health & Neurosciences, Bengaluru, India.
National Institute of Mental Health and Neurosciences · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlzheimer's disease (AD) and frontotemporal dementia (FTD) are pathologically distinct neurodegenerative disorders with certain overlap in cognitive and behavioral symptoms. Both AD and FTD are characterized by synaptic loss and accumulation of misfolded proteins, albeit, in different regions of the brain.

objectiveTo investigate the synaptic and organellar markers in AD and FTD through assessment of the levels of synaptic protein, neurogranin (Ng) and organellar proteins, mitofusin-2 (MFN-2), lysosomal associated membrane protein-2 (LAMP-2), and golgin A4 from neuronal exosomes.

methodsExosomes isolated from the plasma of healthy controls (HC), AD and FTD subjects were characterized using transmission electron microscopy. Neurodegenerative status was assessed by measurement of neurofilament light chain (NfL) using Simoa. The pooled exosomal extracts from each group were analyzed for Ng, MFN-2, LAMP-2, and golgin A4 by western blot analysis using enhanced chemiluminescence method of detection.

resultsThe densitometric analysis of immunoreactive bands demonstrated a 65% reduction of Ng in AD and 53% in FTD. Mitochondrial protein MFN-2 showed a significant reduction by 32% in AD and 46% in FTD. Lysosomal LAMP-2 and Golgi complex associated golgin A4 were considerably increased in both AD and FTD.

conclusionChanges in Ng may reflect the ongoing synaptic degeneration that are linked to cognitive disturbances in AD and FTD. Importantly, the rate of synaptic degeneration was more pronounced in AD. Changes to a similar extent in both the dementia groups in organellar proteins indicates shared mechanisms of protein accumulation/degradation common to both AD and FTD.

Indexed as

Alzheimer DiseaseExosomesFrontotemporal DementiaGolgi Matrix ProteinsHumansNeurograninNeuronsGolgi Matrix ProteinsNeurograninAlzheimer’s diseaseexosomesfrontotemporal dementiagolgin A4immunoblottingLAMP-2MFN-2neurogranin

Identifiers

PMID36336935
PMCPMC10473137
OpenAlexW4308008382

What OpenQuestion holds

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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.