Evidence map›Paper›PMID 34363809›Full record

ArticleExperimental neurology2021

Interruption of endolysosomal trafficking leads to stroke brain injury.

Dong Yuan, Kurt Hu, Chun Mun Loke, Hironori Teramoto, Chunli Liu, Bingren Hu

Open access · bronzeAbstract read
In one paragraph

Article in Experimental neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 15% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
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  3. Article
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  7. Article
  8. Unveiling the mechanisms and challenges of cancer drug resistance.Cell communication and signaling : CCS · 2024
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  9. Downregulation ofFrontiers in aging neuroscience · 2024
    Article
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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

6 authors at 3 institutions in 1 country.

Dong YuanDepartment of Anesthesiology, University of Maryland, Baltimore, MD, United States of America.
Kurt HuDepartment of Medicine, Division of Pulmonary and Critical Care, Medical College of Wisconsin, United States of America.
Chun Mun LokeVeterans Affairs Maryland Health Center System, United States of America.
Hironori TeramotoDepartment of Anesthesiology, University of Maryland, Baltimore, MD, United States of America.
Chunli LiuVeterans Affairs Maryland Health Center System, United States of America.
Bingren HuDepartment of Anesthesiology, University of Maryland, Baltimore, MD, United States of America; Veterans Affairs Maryland Health Center System, United States of America. Electronic address: bhu@som.umaryland.edu.
University of Maryland, Baltimore · USVA Maryland Health Care System · USMedical College of Wisconsin · US

Funding

VOLUMETRIC CONTOUR-BASED SURFACE RECONSTRUCTIONP41RR004050 · NCRR · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI PASQUALE, ELENA B · 1989 to 2011
$28.0M
Dysfunctional organelle-specific autophagy leads to brain ischemia-reperfusion injuryR01NS134895 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Bingren Hu · 2024 to 2026
$1.8M
Novel anti-NPC aggregation strategy against brain ischemia-reperfusion injuryR01NS097875 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI HU, BINGREN · 2017 to 2021
$1.7M
Change in NSF ATPase activity Leads to Brain Ischemia Reperfusion InjuryR01NS102815 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI HU, BINGREN · 2018 to 2023
$1.7M
The Role of Lysosomal Membrane Permeabilization and Cathepsin B Release in Stroke Brain InjuryR01NS129553 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Bingren Hu · 2023 to 2026
$1.5M
An Innovative Approach to Study Alzheimer Disease Blood BiomarkersR21AG052734 · NIA · UNIVERSITY OF MARYLAND BALTIMORE · PI HU, BINGREN · 2016 to 2017
$424k
Dysfunction of the membrane trafficking leads to ischemia-reperfusion brain injuryI01BX003926 · VA · BALTIMORE VA MEDICAL CENTER · PI HU, BINGREN · 2018 to 2020
–
The Protein Degradation Pathway after Brain IschemiaI01BX001696 · VA · BALTIMORE VA MEDICAL CENTER · PI HU, BINGREN · 2013 to 2016
–
BLRD VA I01 BX001696BLRD VA I01 BX003926BLRD VA I01 BX005814NCRR NIH HHS P41 RR004050NIA NIH HHS R21 AG052734NINDS NIH HHS R01 NS097875NINDS NIH HHS R01 NS102815NINDS NIH HHS R01 NS129553NINDS NIH HHS R01 NS134895
6 · The paper itself

Abstract

background and purposeDysfunction of the endolysosomal system can cause cell death. A key molecule for controlling the endolysosomal trafficking activities is the N-ethylmaleimide-sensitive factor (NSF) ATPase. This study investigates the cascades of NSF ATPase inactivation events, endolysosomal damage, cathepsin release, and neuronal death after focal brain ischemia.

methodsA total of 62 rats were used in this study. They were subjected to sham surgery or 2 h of focal brain ischemia followed by 1, 4, and 24 h of reperfusion. Confocal microscopy and Western blot analysis were utilized to analyze the levels, redistribution, and co-localization of key proteins of the Golgi apparatus, late endosomes, endolysosomes, and lysosomes. Light and electron microscopy were used to examine the histopathology, protein aggregation, and endolysosomal ultrastructures.

resultsTwo hours of focal brain ischemia in rats led to acute neuronal death at the striatal core in 4 h and a slower type of neuronal death in the neocortical area during 1-24 h reperfusion periods. Confocal microscopy showed that NSF immunoreactivity was irreversibly and selectively depleted from most, if not all, post-ischemic penumbral neurons. Western blot analysis further demonstrated that NSF depletion from brain sections was due to its deposition into dense inactive aggregates that could not be recognized by the NSF antibody. Commitantly, the Golgi apparatus was completely fragmented and cathepsin B (CTSB)-containing endolysosomal structures, as well as p62/SQSTM1- and EEA1-immunopositive structures were massively accumulated in the post-ischemic penumbral neurons. Ultimately, CTSB was released into the cytoplasm and extracellular space, causing stroke brain injury.

conclusionStroke Inactivates NSF, resulting in disruption of the reforming of functional endolysosomal compartments, blockade of the endocytic and autophagic pathways, a large scale of CTSB release into the cytoplasm and extracellular space, and stroke brain injury in the rat model.

Indexed as

AnimalsBrain InjuriesCathepsin BCathepsinsDouble-Blind MethodEndosomesLysosomesMaleN-Ethylmaleimide-Sensitive ProteinsProtein TransportRatsRats, WistarStrokeCathepsin BCathepsinsCtsb protein, ratN-Ethylmaleimide-Sensitive Proteins

Identifiers

PMID34363809
PMCPMC8429234
OpenAlexW3190079912

What OpenQuestion holds

Textmetadata
LicenceTDM
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.