Evidence map›Paper›PMID 21442128›Full record

ArticleMolecular medicine (Cambridge, Mass.)2011

Calpain-mediated tau cleavage: a mechanism leading to neurodegeneration shared by multiple tauopathies.

Adriana Ferreira, Eileen H Bigio

Open access · goldAbstract read
In one paragraph

Article in Molecular medicine (Cambridge, Mass.), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
3.1field-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

70 citing papers in PubMed, 108 citations in OpenAlex.

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  5. Asparagine endopeptidase (AEP) inhibitor formulation via zein-based nanoparticle improves the therapeutic efficacy toward Alzheimer's disease.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
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10 more citing papers are in PubMed but not listed here.

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

2 authors at 1 institution in 1 country.

Adriana FerreiraDepartment of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA. a-ferreira@northwestern.edu
Eileen H Bigio
Northwestern University · US

Funding

Neuropathology CoreP30AG013854 · NIA · NORTHWESTERN UNIVERSITY AT CHICAGO · PI BIGIO, EILEEN H. · 1996 to 2020
$28.9M
Novel Tau-mediated Neurodegeneration MechanismsR01NS039080 · NINDS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI FERREIRA, ADRIANA B. · 2000 to 2010
$2.6M
NIA NIH HHS P30 AG013854NIA NIH HHS P30 AG13854NINDS NIH HHS R01 NS039080NINDS NIH HHS R01 NS39080
6 · The paper itself

Abstract

Tau dysfunction has been associated with a host of neurodegenerative diseases called tauopathies. These diseases share, as a common pathological hallmark, the presence of intracellular aggregates of hyperphosphorylated tau in affected brain areas. Aside from tau hyperphosphorylation, little is known about the role of other posttranslational modifications in tauopathies. Recently, we obtained data suggesting that calpain-mediated tau cleavage leading to the generation of a neurotoxic tau fragment might play an important role in Alzheimer's disease. In the current study, we assessed the presence of this tau fragment in several tauopathies. Our results show high levels of the 17-kDa tau fragment and enhanced calpain activity in the temporal cortex of AD patients and in brain samples obtained from patients with other tauopathies. In addition, our data suggest that this fragment could partially inhibit tau aggregation. Conversely, tau aggregation might prevent calpain-mediated cleavage, establishing a feedback circuit that might lead to the accumulation of this toxic tau fragment. Collectively, these data suggest that the mechanism underlying the generation of the 17-kDa neurotoxic tau fragment might be part of a conserved pathologic process shared by multiple tauopathies.

Indexed as

AdultAgedAged, 80 and overAlzheimer DiseaseAnimalsCalpainCells, CulturedCerebral CortexFemaleGene ExpressionHumansImmunoblottingMaleMicroscopy, ElectronMiddle AgedMolecular WeightCalpaintau Proteins

Identifiers

PMID21442128
PMCPMC3146621
OpenAlexW104689190

What OpenQuestion holds

Textmetadata
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.