Evidence map›Paper›PMID 34795317›Full record

ArticleNPJ Parkinson's disease2021

Association between Parkinson's disease and the faecal eukaryotic microbiota.

Severin Weis, Alexandra Meisner, Andreas Schwiertz, Marcus M Unger, Anouck Becker, Klaus Faßbender, Sylvia Schnell, Karl-Herbert Schäfer, Markus Egert

Open access · goldAbstract read
In one paragraph

Article in NPJ Parkinson's disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

11 citing papers in PubMed, 21 citations in OpenAlex.

  1. Trial
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  4. Lewy body diseases and the gut.Molecular neurodegeneration · 2025
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  6. 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

9 authors at 4 institutions in 1 country.

Severin WeisFaculty of Medical and Life Sciences, Institute of Precision Medicine, Microbiology and Hygiene Group, Furtwangen University, Villingen-Schwenningen, Germany.
Alexandra MeisnerFaculty of Medical and Life Sciences, Institute of Precision Medicine, Microbiology and Hygiene Group, Furtwangen University, Villingen-Schwenningen, Germany.
Andreas SchwiertzMVZ Institute of Microecology, Herborn, Germany.
Marcus M UngerDepartment of Neurology, Saarland University, Homburg, Germany.ORCID http://orcid.org/0000-0003-0805-6968
Anouck BeckerDepartment of Neurology, Saarland University, Homburg, Germany.
Klaus FaßbenderDepartment of Neurology, Saarland University, Homburg, Germany.ORCID http://orcid.org/0000-0003-3596-868X
Sylvia SchnellInstitute of Applied Microbiology, Justus-Liebig-University, Giessen, Germany.
Karl-Herbert SchäferWorking Group Enteric Nervous System (AGENS), University of Applied Sciences Kaiserslautern, Zweibrücken, Germany.
Markus EgertFaculty of Medical and Life Sciences, Institute of Precision Medicine, Microbiology and Hygiene Group, Furtwangen University, Villingen-Schwenningen, Germany. Markus.Egert@hs-furtwangen.de.ORCID http://orcid.org/0000-0003-2402-3322
Furtwangen University · DESaarland University · DEJustus-Liebig-Universität Gießen · DEUniversity of Applied Sciences Kaiserslautern · DE

Funding

Bundesministerium für Bildung und Forschung (Federal Ministry of Education and Research) 03FH036PB5
6 · The paper itself

Abstract

Parkinson's disease (PD) is one of the most common neurodegenerative disease, and is so far not considered curable. PD patients suffer from several motor and non-motor symptoms, including gastrointestinal dysfunctions and alterations of the enteric nervous system. Constipation and additional intestinal affections can precede the classical motor symptoms by several years. Recently, we reported effects of PD and related medications on the faecal bacterial community of 34 German PD patients and 25 age-matched controls. Here, we used the same collective and analysed the V6 and V7 hypervariable region of PCR-amplified, eukaryotic 18S rRNA genes using an Illumina MiSeq platform. In all, 53% (18) of the PD samples and 72% (18) of the control samples yielded sufficient amplicons for downstream community analyses. The PD samples showed a significantly lower alpha and a different beta eukaryotic diversity than the controls. Most strikingly, we observed a significantly higher relative abundance of sequence affiliated with the Geotrichum genus in the PD samples (39.7%), when compared to the control samples (0.05%). In addition, we observed lower relative abundances of sequences affiliated with Aspergillus/Penicillium, Charophyta/Linum, unidentified Opisthokonta and three genera of minor abundant zooflagellates in the PD samples. Our data add knowledge to the small body of data about the eukaryotic microbiota of PD patients and suggest a potential association of certain gut eukaryotes and PD.

Identifiers

PMID34795317
PMCPMC8602383
OpenAlexW3213237808

What OpenQuestion holds

Textmetadata
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.