Evidence map›Paper›PMID 32826893›Full record

ArticleNature communications2020

A single-cell atlas of the human substantia nigra reveals cell-specific pathways associated with neurological disorders.

Devika Agarwal, Cynthia Sandor, Viola Volpato, Tara M Caffrey, Jimena Monzón-Sandoval, Rory Bowden, Javier Alegre-Abarrategui, Richard Wade-Martins, Caleb Webber

Abstract read
In one paragraph

Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 206 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
206citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

206 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  20. The α-synuclein proteostasis network and its translational applications in Parkinson's disease.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article

146 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Devika Agarwal *Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, UK.
Cynthia Sandor *UK Dementia Research Institute, Cardiff University, Cardiff, UK.
Viola Volpato *UK Dementia Research Institute, Cardiff University, Cardiff, UK.
Tara M CaffreyOxford Parkinson's Disease Centre, Department of Physiology, Anatomy, Genetics, University of Oxford, Oxford, UK.ORCID http://orcid.org/0000-0002-7670-7411
Jimena Monzón-SandovalUK Dementia Research Institute, Cardiff University, Cardiff, UK.
Rory BowdenWellcome Trust Centre for Human Genetics, Roosevelt Drive, Oxford, OX2 7BN, UK.ORCID http://orcid.org/0000-0001-8596-0366
Javier Alegre-AbarrateguiOxford Parkinson's Disease Centre, Department of Physiology, Anatomy, Genetics, University of Oxford, Oxford, UK.ORCID http://orcid.org/0000-0002-5958-7753
Richard Wade-MartinsOxford Parkinson's Disease Centre, Department of Physiology, Anatomy, Genetics, University of Oxford, Oxford, UK.ORCID http://orcid.org/0000-0001-6691-580X
Caleb WebberOxford Parkinson's Disease Centre, Department of Physiology, Anatomy, Genetics, University of Oxford, Oxford, UK. webberc4@cardiff.ac.uk.ORCID http://orcid.org/0000-0001-8063-7674

Funding

Department of HealthMedical Research Council G1000691Medical Research Council MC_EX_MR/N50192X/1Medical Research Council MR/L022656/1Medical Research Council MR/L023784/1Medical Research Council MR/L023784/2Medical Research Council MR/M024962/1Medical Research Council MR/N029453/1Medical Research Council MR/P007058/1Parkinson's UK H-1301Parkinson's UK J-0901Wellcome TrustWellcome Trust 203141/Z/16/Z
6 · The paper itself

Abstract

We describe a human single-nuclei transcriptomic atlas for the substantia nigra (SN), generated by sequencing approximately 17,000 nuclei from matched cortical and SN samples. We show that the common genetic risk for Parkinson's disease (PD) is associated with dopaminergic neuron (DaN)-specific gene expression, including mitochondrial functioning, protein folding and ubiquitination pathways. We identify a distinct cell type association between PD risk and oligodendrocyte-specific gene expression. Unlike Alzheimer's disease (AD), we find no association between PD risk and microglia or astrocytes, suggesting that neuroinflammation plays a less causal role in PD than AD. Beyond PD, we find associations between SN DaNs and GABAergic neuron gene expression and multiple neuropsychiatric disorders. Conditional analysis reveals that distinct neuropsychiatric disorders associate with distinct sets of neuron-specific genes but converge onto shared loci within oligodendrocytes and oligodendrocyte precursors. This atlas guides our aetiological understanding by associating SN cell type expression profiles with specific disease risk.

Indexed as

Gene ExpressionAlzheimer DiseaseAstrocytesBrainDopaminergic NeuronsHumansMicrogliaMitochondriaNervous System DiseasesParkinson DiseaseSubstantia NigraTranscriptome

Identifiers

PMID32826893
PMCPMC7442652

What OpenQuestion holds

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Registered trials

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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.