Evidence map›Paper›PMID 36076304›Full record

ArticleActa neuropathologica communications2022

Mitochondrial dysfunction is a key pathological driver of early stage Parkinson's.

Christina E Toomey, Wendy E Heywood, James R Evans, Joanne Lachica, Sarah N Pressey, Sandrine C Foti, Mesfer Al Shahrani, Karishma D'Sa, Iain P Hargreaves, Simon Heales and 10 more

Open access · goldAbstract read
In one paragraph

Article in Acta neuropathologica communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 2 pooled it
8.6field-weighted citation impact, top 2% 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

44 citing papers in PubMed, 2 syntheses or guidelines pooled it, 73 citations in OpenAlex.

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  10. Integrative multiomics elucidate crotonylation-associated GCDH in Parkinson's disease pathogenesis via metabolome remodeling.Mammalian genome : official journal of the International Mammalian Genome Society · 2025
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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

20 authors at 9 institutions in 5 countries.

Christina E Toomey *Queen Square Brain Bank for Neurological Disorders, UCL Queen Square Institute of Neurology, London, UK. christina.toomey@ucl.ac.uk.ORCID 0000-0002-5146-3326
Wendy E Heywood *Translational Mass Spectrometry Research Group, Genetic & Genomic Medicine, Institute of Child Health, UCL, London, UK.ORCID 0000-0003-2106-8760
James R EvansDepartment of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, London, UK.
Joanne LachicaQueen Square Brain Bank for Neurological Disorders, UCL Queen Square Institute of Neurology, London, UK.
Sarah N PresseyQueen Square Brain Bank for Neurological Disorders, UCL Queen Square Institute of Neurology, London, UK.
Sandrine C FotiQueen Square Brain Bank for Neurological Disorders, UCL Queen Square Institute of Neurology, London, UK.
Mesfer Al ShahraniNational Hospital for Neurology and Neurosurgery & Neurometabolic Unit, UCL Great Ormond Street Institute of Child Health, London, UK.ORCID 0000-0002-4827-2801
Karishma D'SaDepartment of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, London, UK.
Iain P HargreavesNational Hospital for Neurology and Neurosurgery & Neurometabolic Unit, UCL Great Ormond Street Institute of Child Health, London, UK.ORCID 0000-0002-2760-5603
Simon HealesNational Hospital for Neurology and Neurosurgery & Neurometabolic Unit, UCL Great Ormond Street Institute of Child Health, London, UK.ORCID 0000-0002-9906-0200
Michael OrfordNational Hospital for Neurology and Neurosurgery & Neurometabolic Unit, UCL Great Ormond Street Institute of Child Health, London, UK.
Claire TroakesLondon Neurodegenerative Diseases Brain Bank, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.ORCID 0000-0002-1790-7376
Johannes AttemsNewcastle Brain Tissue Resource, Institute of Neuroscience and Newcastle University Institute for Ageing, Newcastle upon Tyne, UK.ORCID 0000-0003-1636-1700
Ellen GelpiNeurological Tissue Bank, University of Barcelona, Barcelona, Spain.
Miklos PalkovitsHuman Brain Tissue Bank, Budapest, Semmelweis University, Budapest, Hungary.ORCID 0000-0003-0578-0387
Tammaryn LashleyQueen Square Brain Bank for Neurological Disorders, UCL Queen Square Institute of Neurology, London, UK.ORCID 0000-0001-7389-0348
Steve M GentlemanDepartment of Brain Sciences, Imperial College London, London, UK.ORCID 0000-0002-7131-4643
Tamas ReveszQueen Square Brain Bank for Neurological Disorders, UCL Queen Square Institute of Neurology, London, UK.ORCID 0000-0003-2501-0259
Kevin Mills *Translational Mass Spectrometry Research Group, Genetic & Genomic Medicine, Institute of Child Health, UCL, London, UK.ORCID 0000-0003-0763-8288
Sonia Gandhi *Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, London, UK. sonia.gandhi@ucl.ac.uk.ORCID 0000-0003-4395-2661
National Hospital for Neurology and Neurosurgery · GBQueen Mary University of London · GBUniversity College London · GBImperial College London · GBKing's College London · GBNewcastle University · GBSemmelweis University · HUThe Francis Crick Institute · GBUniversitat de Barcelona · ES

Funding

Medical Research Council MR/T008199/1Wellcome Trust
6 · The paper itself

Abstract

backgroundThe molecular drivers of early sporadic Parkinson's disease (PD) remain unclear, and the presence of widespread end stage pathology in late disease masks the distinction between primary or causal disease-specific events and late secondary consequences in stressed or dying cells. However, early and mid-stage Parkinson's brains (Braak stages 3 and 4) exhibit alpha-synuclein inclusions and neuronal loss along a regional gradient of severity, from unaffected-mild-moderate-severe. Here, we exploited this spatial pathological gradient to investigate the molecular drivers of sporadic PD.

methodsWe combined high precision tissue sampling with unbiased large-scale profiling of protein expression across 9 brain regions in Braak stage 3 and 4 PD brains, and controls, and verified these results using targeted proteomic and functional analyses.

resultsWe demonstrate that the spatio-temporal pathology gradient in early-mid PD brains is mirrored by a biochemical gradient of a changing proteome. Importantly, we identify two key events that occur early in the disease, prior to the occurrence of alpha-synuclein inclusions and neuronal loss: (i) a metabolic switch in the utilisation of energy substrates and energy production in the brain, and (ii) perturbation of the mitochondrial redox state. These changes may contribute to the regional vulnerability of developing alpha-synuclein pathology. Later in the disease, mitochondrial function is affected more severely, whilst mitochondrial metabolism, fatty acid oxidation, and mitochondrial respiration are affected across all brain regions.

conclusionsOur study provides an in-depth regional profile of the proteome at different stages of PD, and highlights that mitochondrial dysfunction is detectable prior to neuronal loss, and alpha-synuclein fibril deposition, suggesting that mitochondrial dysfunction is one of the key drivers of early disease.

Indexed as

alpha-SynucleinParkinson DiseaseHumansMitochondriaProteomeProteomicsalpha-SynucleinProteomeBrainMitochondriaNeurodegenerationParkinson’sProgressionProteomics

Identifiers

PMID36076304
PMCPMC9461181
OpenAlexW4294970551

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.