Evidence map›Paper›PMID 33740987›Full record

ArticleJournal of neuroinflammation2021

Neuroprotective effect of mitochondrial translocator protein ligand in a mouse model of tauopathy.

Lauren H Fairley, Naruhiko Sahara, Ichio Aoki, Bin Ji, Tetsuya Suhara, Makoto Higuchi, Anna M Barron

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
4.2field-weighted citation impact, top 5% 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

18 citing papers in PubMed, 38 citations in OpenAlex.

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  13. Mitochondrial control of microglial phagocytosis by the translocator protein and hexokinase 2 in Alzheimer's disease.Proceedings of the National Academy of Sciences of the United States of America · 2023
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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 2 countries.

Lauren H FairleyLee Kong Chian School of Medicine, Nanyang Technological University Singapore, Singapore, 308232, Singapore.
Naruhiko SaharaNational Institute of Radiological Science, Chiba City, Chiba Province, 263-8555, Japan.
Ichio AokiNational Institute of Radiological Science, Chiba City, Chiba Province, 263-8555, Japan.
Bin JiNational Institute of Radiological Science, Chiba City, Chiba Province, 263-8555, Japan.
Tetsuya SuharaNational Institute of Radiological Science, Chiba City, Chiba Province, 263-8555, Japan.
Makoto HiguchiNational Institute of Radiological Science, Chiba City, Chiba Province, 263-8555, Japan.
Anna M BarronLee Kong Chian School of Medicine, Nanyang Technological University Singapore, Singapore, 308232, Singapore. barron@ntu.edu.sg.ORCID http://orcid.org/0000-0002-4715-9364
Nanyang Technological University · SG

Funding

Japan Agency for Medical Research and Development Brain/MINDSJapan Agency for Medical Research and Development JP19dm0207072Japan Society for the Promotion of Science 26830038
6 · The paper itself

Abstract

backgroundThe translocator protein (TSPO) has been identified as a positron emission tomography (PET)-visible biomarker of inflammation and promising immunotherapeutic target for the treatment of Alzheimer's disease (AD). While TSPO ligands have been shown to reduce the accumulation of the toxic Alzheimer's beta-amyloid peptide, their effect on tau pathology has not yet been investigated. To address this, we analyzed the effects of TSPO ligand, Ro5-4864, on the progression of neuropathology in rTg4510 tau transgenic mice (TauTg).

methodsBrain atrophy, tau accumulation, and neuroinflammation were assessed longitudinally using volumetric magnetic resonance imaging, tau-PET, and TSPO-PET, respectively. In vivo neuroimaging results were confirmed by immunohistochemistry for markers of neuronal survival (NeuN), tauopathy (AT8), and inflammation (TSPO, ionized calcium-binding adaptor molecule 1 or IBA-1, and complement component 1q or C1q) in brain sections from scanned mice.

resultsTSPO ligand treatment attenuated brain atrophy and hippocampal neuronal loss in the absence of any detected effect on tau depositions. Atrophy and neuronal loss were strongly associated with in vivo inflammatory signals measured by TSPO-PET, IBA-1, and levels of C1q, a regulator of the complement cascade. In vitro studies confirmed that the TSPO ligand Ro5-4864 reduces C1q expression in a microglial cell line in response to inflammation, reduction of which has been shown in previous studies to protect synapses and neurons in models of tauopathy.

conclusionsThese findings support a protective role for TSPO ligands in tauopathy, reducing neuroinflammation, neurodegeneration, and brain atrophy.

Indexed as

Amyloid beta-Protein PrecursorAtrophyBrainCell SurvivalLigandsMagnetic Resonance ImagingNeuroprotective AgentsPositron-Emission TomographyReceptors, GABATauopathiestau ProteinsAmyloid beta-Protein PrecursorAPP protein, mouseBzrp protein, mouseLigandsMapt protein, mouseNeuroprotective AgentsReceptors, GABAtau ProteinsAlzheimer’s diseaseComplementMicrogliaNeuroinflammationPeripheral benzodiazepine receptorTauTranslocator proteinTSPO

Identifiers

PMID33740987
PMCPMC7980620
OpenAlexW3138727778

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.