Cited by 124Parkinson's Disease Mechanisms and TreatmentsGut microbiota and healthMicrobial Metabolites in Food Biotechnology

An open label, non-randomized study assessing a prebiotic fiber intervention in a small cohort of Parkinson’s disease participants

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Abstract

A pro-inflammatory intestinal microbiome is characteristic of Parkinson’s disease (PD). Prebiotic fibers change the microbiome and this study sought to understand the utility of prebiotic fibers for use in PD patients. The first experiments demonstrate that fermentation of PD patient stool with prebiotic fibers increased the production of beneficial metabolites (short chain fatty acids, SCFA) and changed the microbiota demonstrating the capacity of PD microbiota to respond favorably to prebiotics. Subsequently, an open-label, non-randomized study was conducted in newly diagnosed, non-medicated ( n = 10) and treated PD participants ( n = 10) wherein the impact of 10 days of prebiotic intervention was evaluated. Outcomes demonstrate that the prebiotic intervention was well tolerated (primary outcome) and safe (secondary outcome) in PD participants and was associated with beneficial biological changes in the microbiota, SCFA, inflammation, and neurofilament light chain. Exploratory analyses indicate effects on clinically relevant outcomes. This proof-of-concept study offers the scientific rationale for placebo-controlled trials using prebiotic fibers in PD patients. ClinicalTrials.gov Identifier: NCT04512599.

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  • Limited evidence from a few open-label studies suggests that pre- and pro-biotics can increase the abundance of SCFA-producing bacteria, reduce the abundance of pro-inflammatory bacteria, and reduce levels of intestinal inflammatory markers like calprotectin.

    “There is limited evidence of how pre- and pro-biotics influence gut microbiome composition and functionality, with only limited evidence from a few open-label studies to suggest that pre- and pro-biotics can increase the abundance of SCFA-producing bacteria, reduce the abundance of pro-inflammatory bacteria, and reduce levels of intestinal inflammatory markers like calprotectin [163, 177].”

    From The gut–brain axis in early Parkinson’s disease: from prodrome to prevention (2025) · cites this paper as [177]

    The Results report that the 10-day prebiotic intervention increased putative SCFA-producing bacteria and reduced putative pro-inflammatory bacteria; the Discussion reports decreased stool calprotectin in participants with Parkinson’s disease. This paper supports those findings for a prebiotic, but does not establish the corresponding effects of probiotics or the claim about findings from several studies. (LLM, conf=0.86)

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  • A proof-of-concept trial of prebiotic fibers in PD patients reported increased abundance of SCFA-producing species and increased plasma SCFA levels, along with improved intestinal barrier integrity and reduced intestinal inflammation.

    “Importantly, the trial reported an increased abundance of SCFAs-producing species and increased plasma SCFA levels, along with improved intestinal barrier integrity and reduced intestinal inflammation.332”
  • A proof-of-concept trial in PD patients demonstrated that SCFAs-promoting prebiotic fiber intervention reduced plasma zonulin, indicating improved intestinal barrier integrity.

    “A proof-of-concept trial conducted in PD patients has demonstrated that SCFAs-promoting prebiotic fiber intervention reduced plasma zonulin, indicating improved intestinal barrier integrity.”

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Authors
Hall, D. A., Voigt, R. M., Cantu-Jungles, T. M., Hamaker, B., Engen, P. A., Shaikh, M., Raeisi, S., Green, S. J., Naqib, A., Forsyth, C. B., Chen, T., Manfready, R., Ouyang, B., Rasmussen, H. E., Sedghi, S., Goetz, C. G., & Keshavarzian, A.
Affiliations
  • Rush University Medical Center (US)
  • Nanchang University (CN)
  • University of Nebraska–Lincoln (US)
  • Mercer University (US)
Corresponding author
Keshavarzian, Ali
Venue
Nature Communications
Published
2023-02-18
Volume
14
Issue
1
Pages
926-926
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4321328855
Cited by
124
References
94
Citations by year
2026: 24 · 2025: 55 · 2024: 35 · 2023: 10
FWCI
21.10
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Parkinson's Foundation
  • National Institutes of Health (NIH-R01, AA026801)
  • National Institute on Alcohol Abuse and Alcoholism (R24AA026801)
  • National Institute on Aging (R01AG056653)
  • NIH Clinical Center
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Nursing › Nutrition and Dietetics › Microbial Metabolites in Food Biotechnology
Keywords
Parkinson's disease, prebiotic fiber, gut microbiota, short-chain fatty acids, intestinal fermentation, neuroinflammation, neurofilament light chain, dietary intervention, gut-brain axis
MeSH terms
Gastrointestinal Microbiome, Fatty Acids, Volatile, Feces, Humans, Parkinson Disease, Prebiotics

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