Evidence map›Paper›PMID 34839011›Full record

Trial reportGenomics, proteomics & bioinformatics2022

Effects of Resistant Starch on Symptoms, Fecal Markers, and Gut Microbiota in Parkinson's Disease - The RESISTA-PD Trial.

Anouck Becker, Georges Pierre Schmartz, Laura Gröger, Nadja Grammes, Valentina Galata, Hannah Philippeit, Jacqueline Weiland, Nicole Ludwig, Eckart Meese, Sascha Tierling and 7 more

Registry-linked trialOpen access · goldAbstract readClinical Trial
In one paragraph

Trial report in Genomics, proteomics & bioinformatics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02784145 (Effects of Resistant Starch on Bowel Habits, Fecal Short Chain Fatty Acids and Gut Microbiota in Parkinson Disease), which is not on this map. Cited by 60 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 2 pooled it
6.0field-weighted citation impact, top 3% 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.

NCT02784145 nacompletednot on this map

Effects of Resistant Starch on Bowel Habits, Fecal Short Chain Fatty Acids and Gut Microbiota in Parkinson Disease

TypeinterventionalSponsorUniversität des SaarlandesRan2016 to 2018Enrolled95ConditionsParkinson DiseaseArmsResistant starch, Recommendation with regard to nutrition
3 · Its place in the literature

Who cites it

60 citing papers in PubMed, 2 syntheses or guidelines pooled it, 92 citations in OpenAlex.

  1. Beyond bacteria: a multi-omics view of the gut-brain axis in Parkinson's disease.Frontiers in cellular and infection microbiology · 2026
    Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Review
  6. Gut-Brain Signaling in Parkinson's Disease: A Narrative Review.International journal of molecular sciences · 2026
    Review
  7. Lifestyle medicine in Parkinson's disease.Journal of neural transmission (Vienna, Austria : 1996) · 2026
    Review
  8. Article
  9. Review
  10. Review
  11. Depletion ofFrontiers in microbiology · 2026
    Article
  12. Review
  13. Review
  14. Article
  15. Review
  16. Review
  17. Article
  18. Review
  19. Review
  20. Article
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

17 authors at 2 institutions in 2 countries.

Anouck BeckerDepartment of Neurology, Saarland University, D-66421 Homburg, Germany.
Georges Pierre SchmartzChair for Clinical Bioinformatics, Saarland University, D-66123 Saarbrücken, Germany.
Laura GrögerDepartment of Human Genetics, Saarland University, D-66421 Homburg, Germany.
Nadja GrammesChair for Clinical Bioinformatics, Saarland University, D-66123 Saarbrücken, Germany.
Valentina GalataChair for Clinical Bioinformatics, Saarland University, D-66123 Saarbrücken, Germany.
Hannah PhilippeitDepartment of Neurology, Saarland University, D-66421 Homburg, Germany.
Jacqueline WeilandDepartment of Neurology, Saarland University, D-66421 Homburg, Germany.
Nicole LudwigDepartment of Human Genetics, Saarland University, D-66421 Homburg, Germany.
Eckart MeeseDepartment of Human Genetics, Saarland University, D-66421 Homburg, Germany.
Sascha TierlingDepartment of Genetics/Epigenetics, Saarland University, D-66123 Saarbrücken, Germany.
Jörn WalterDepartment of Genetics/Epigenetics, Saarland University, D-66123 Saarbrücken, Germany.
Andreas SchwiertzInstitute of Microecology, D-35745 Herborn, Germany.
Jörg SpiegelDepartment of Neurology, Saarland University, D-66421 Homburg, Germany.
Gudrun WagenpfeilInstitute of Medical Biometry, Epidemiology and Medical Informatics, Saarland University, D-66421 Homburg, Germany.
Klaus FaßbenderDepartment of Neurology, Saarland University, D-66421 Homburg, Germany.
Andreas KellerChair for Clinical Bioinformatics, Saarland University, D-66123 Saarbrücken, Germany; Department of Neurology, Stanford University, Palo Alto, CA 94305, USA.
Marcus M UngerDepartment of Neurology, Saarland University, D-66421 Homburg, Germany. Electronic address: marcus.unger@uks.eu.
Saarland University · DEPalo Alto University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The composition of the gut microbiota is linked to multiple diseases, including Parkinson's disease (PD). Abundance of bacteria producing short-chain fatty acids (SCFAs) and fecal SCFA concentrations are reduced in PD. SCFAs exert various beneficial functions in humans. In the interventional, monocentric, open-label clinical trial "Effects of Resistant Starch on Bowel Habits, Short Chain Fatty Acids and Gut Microbiota in Parkinson'sDisease" (RESISTA-PD; ID: NCT02784145), we aimed at altering fecal SCFAs by an 8-week prebiotic intervention with resistant starch (RS). We enrolled 87 subjects in three study-arms: 32 PD patients received RS (PD + RS), 30 control subjects received RS, and 25 PD patients received solely dietary instructions. We performed paired-end 100 bp length metagenomic sequencing of fecal samples using the BGISEQ platform at an average of 9.9 GB. RS was well-tolerated. In the PD + RS group, fecal butyrate concentrations increased significantly, and fecal calprotectin concentrations dropped significantly after 8 weeks of RS intervention. Clinically, we observed a reduction in non-motor symptom load in the PD + RS group. The reference-based analysis of metagenomes highlighted stable alpha-diversity and beta-diversity across the three groups, including bacteria producing SCFAs. Reference-free analysis suggested punctual, yet pronounced differences in the metagenomic signature in the PD + RS group. RESISTA-PD highlights that a prebiotic treatment with RS is safe and well-tolerated in PD. The stable alpha-diversity and beta-diversity alongside altered fecal butyrate and calprotectin concentrations call for long-term studies, also investigating whether RS is able to modify the clinical course of PD.

Indexed as

Gastrointestinal MicrobiomeParkinson DiseaseBacteriaBiomarkersButyratesFatty Acids, VolatileFecesHumansLeukocyte L1 Antigen ComplexPrebioticsResistant StarchBiomarkersButyratesFatty Acids, VolatileLeukocyte L1 Antigen ComplexPrebioticsResistant StarchIntestinal inflammationMetagenomicsMicrobiotaParkinson’s diseaseShort-chain fatty acid

Identifiers

PMID34839011
PMCPMC9684155
OpenAlexW3214815292

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.