Evidence map›Paper›PMID 32450052›Full record

ArticleAutophagy2021

Restoration of CTSD (cathepsin D) and lysosomal function in stroke is neuroprotective.

M Iqbal Hossain, Joshua M Marcus, Jun Hee Lee, Patrick L Garcia, VinodKumar Singh, John J Shacka, Jianhua Zhang, Toby I Gropen, Charles N Falany, Shaida A Andrabi

Open access · bronzeAbstract read
In one paragraph

Article in Autophagy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 1 pooled it
8.7field-weighted citation impact, top 1% 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

67 citing papers in PubMed, 1 synthesis or guideline pooled it, 123 citations in OpenAlex.

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  8. Trem2 exacerbates ischemic brain injury through Gpnmb in a photothrombotic stroke model.Proceedings of the National Academy of Sciences of the United States of America · 2026
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7 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

10 authors at 1 institution in 1 country.

M Iqbal HossainDepartment of Pharmacology and Toxicology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.
Joshua M MarcusDepartment of Pharmacology and Toxicology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.
Jun Hee LeeDepartment of Pharmacology and Toxicology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.
Patrick L GarciaDepartment of Pharmacology and Toxicology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.
VinodKumar SinghDepartment of Anesthesiology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.
John J ShackaDepartment of Pharmacology and Toxicology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.
Jianhua ZhangDepartment of Pathology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.
Toby I GropenDepartment of Neurology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.
Charles N FalanyDepartment of Pharmacology and Toxicology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.
Shaida A AndrabiDepartment of Pharmacology and Toxicology, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.ORCID 0000-0002-4083-1998
University of Alabama at Birmingham · US

Funding

Poly (ADP-ribose) Mediates Cell Death in Stroke by Inhibiting Glucose MetabolismR01NS086953 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI ANDRABI, SHAIDA A. · 2015 to 2019
$1.7M
Alpha-synuclein degradation mechanismsR01NS064090 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI ZHANG, JIANHUA · 2010 to 2014
$1.6M
BLRD VA I01 BX000463NINDS NIH HHS R01 NS064090NINDS NIH HHS R01 NS086953
6 · The paper itself

Abstract

Stroke is a leading cause of death and disability. The pathophysiological mechanisms associated with stroke are very complex and not fully understood. Lysosomal function has a vital physiological function in the maintenance of cellular homeostasis. In neurons, CTSD (cathepsin D) is an essential protease involved in the regulation of proteolytic activity of the lysosomes. Loss of CTSD leads to lysosomal dysfunction and accumulation of different cellular proteins implicated in neurodegenerative diseases. In cerebral ischemia, the role of CTSD and lysosomal function is not clearly defined. We used oxygen-glucose deprivation (OGD) in mouse cortical neurons and the middle cerebral artery occlusion (MCAO) model of stroke to assess the role of CTSD in stroke pathophysiology. Our results show a time-dependent decrease in CTSD protein levels and activity in the mouse brain after stroke and neurons following OGD, with concurrent defects in lysosomal function. We found that shRNA-mediated knockdown of CTSD in neurons is sufficient to cause lysosomal dysfunction. CTSD knockdown further aggravates lysosomal dysfunction and cell death in OGD-exposed neurons. Restoration of CTSD protein levels via lentiviral transduction increases CTSD activity in neurons and, thus, renders resistance to OGD-mediated defects in lysosomal function and cell death. This study indicates that CTSD-dependent lysosomal function is critical for maintaining neuronal survival in cerebral ischemia; thus, strategies focused on maintaining CTSD function in neurons are potentially novel therapeutic approaches to prevent neuronal death in stroke.

Indexed as

AnimalsAutophagyBrainBrain IschemiaCathepsin DCell DeathLysosomesMiceNeuronsNeuroprotectionStrokeCathepsin DAutophagic fluxcathepsin Dlysosomeprotein aggregationproteolysisstroke

Identifiers

PMID32450052
PMCPMC8205033
OpenAlexW3027145092

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.