Evidence map›Paper›PMID 26721933›Full record

ArticleHuman molecular genetics2016

PARK2 enhancement is able to compensate mitophagy alterations found in sporadic Alzheimer's disease.

Patricia Martín-Maestro, Ricardo Gargini, George Perry, Jesús Avila, Vega García-Escudero

Open access · bronzeAbstract read
In one paragraph

Article in Human molecular genetics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 115 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
115citing papers in PubMed, 3 pooled it
3.8field-weighted citation impact, top 6% 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

115 citing papers in PubMed, 3 syntheses or guidelines pooled it, 199 citations in OpenAlex.

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  18. Interconnections of insulin/IGF-1 signaling and autophagy abnormalities in Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
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55 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

5 authors at 4 institutions in 2 countries.

Patricia Martín-MaestroCentro de Biología Molecular 'Severo Ochoa' (UAM-CSIC), Nicolás Cabrera, 1. Cantoblanco, 28049 Madrid, Spain, Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Valderrebollo, 5, 28031 Madrid, Spain.
Ricardo GarginiCentro de Biología Molecular 'Severo Ochoa' (UAM-CSIC), Nicolás Cabrera, 1. Cantoblanco, 28049 Madrid, Spain, Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Valderrebollo, 5, 28031 Madrid, Spain, Centro Nacional de Biotecnología (CSIC), Darwin, 3, Cantoblanco, 28049 Madrid, Spain.
George PerryUniversity of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249-0667, USA and.
Jesús AvilaCentro de Biología Molecular 'Severo Ochoa' (UAM-CSIC), Nicolás Cabrera, 1. Cantoblanco, 28049 Madrid, Spain, Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Valderrebollo, 5, 28031 Madrid, Spain.
Vega García-EscuderoCentro de Biología Molecular 'Severo Ochoa' (UAM-CSIC), Nicolás Cabrera, 1. Cantoblanco, 28049 Madrid, Spain, Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Valderrebollo, 5, 28031 Madrid, Spain, Departamento de Anatomía, Histología y Neurociencia, Facultad de Medicina, UAM, Arzobispo Morcillo, 4, 28029 Madrid, Spain v.garcia-escudero@csic.es v.garcia-escudero@uam.es.
Biomedical Research Networking Center on Neurodegenerative Diseases · ESCentro de Biología Molecular Severo Ochoa · ESThe University of Texas at San Antonio · USUniversidad Autónoma de Madrid · ES

Funding

RCMI Center for Interdiscplinary Health Research CIHRG12MD007591 · NIMHD · UNIVERSITY OF TEXAS SAN ANTONIO · PI PERRY, GEORGE · 2012 to 2016
$10.4M
NIMHD NIH HHS G12 MD007591NIMHD NIH HHS G12-MD007591
6 · The paper itself

Abstract

Mitochondrial anomalies have been previously reported in patients' brain and peripheral tissue, suggesting their relevance in sporadic Alzheimer's disease (AD). The present work evaluates mitochondrial function and recycling in human fibroblasts and brain biopsies. Functional studies using patients' skin fibroblasts showed slower mitochondrial membrane potential recovery after a mitochondrial insult together with alterations in lysosomes and autophagy, accompanied by an increase of oxidized and ubiquitinated proteins. Impairment in mitophagy has been proven in these cells due to diminished PARK2 and insufficient vesicle induction, accumulating depolarized mitochondria and PINK1. Augmented Δ1 PINK1 fragment levels suggest an inhibitory effect over PARK2 translocation to the mitochondria, causing the accumulation of activated PINK1. Moreover, the overexpression of PARK2 diminished ubiquitinated proteins accumulation, improves its targeting to mitochondria and potentiates autophagic vesicle synthesis. This allows the reversion of mitophagy failure reflected in the recovery of membrane potential and the decrease of PINK1 and mitochondria accumulation. Sporadic AD fibroblasts exhibited alterations similar to what it could be found in patients' hippocampal samples at early stages of the disease, where there was an accumulation of PINK1 and Δ1 PINK1 together with abnormally increased mitochondrial content. Our findings indicate that mitophagy alterations can be considered a new hallmark of sporadic AD and validate the use of fibroblasts for modelling this pathology.

Indexed as

AgedAlzheimer DiseaseAutophagyBrainCase-Control StudiesFemaleFibroblastsHumansLysosomesMaleMembrane Potential, MitochondrialMiddle AgedMitochondriaMitochondrial ProteinsMitophagyPrimary Cell CultureMitochondrial Proteinsparkin proteinProtein KinasesPTEN-Induced Putative KinaseUbiquitin-Protein Ligases

Identifiers

PMID26721933
PMCPMC4743695
OpenAlexW2198512561

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.