Evidence map›Paper›PMID 36084951›Full record

SynthesisAging2022

Probiotics treatment for Parkinson disease: a systematic review and meta-analysis of clinical trials.

Chien-Tai Hong, Jia-Hung Chen, Tsai-Wei Huang

Open access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Aging, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
9.0field-weighted citation impact, top 1% 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

23 citing papers in PubMed, 34 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Review
  5. Review
  6. Review
  7. Gut Microbiome as a Source of Probiotic Drugs for Parkinson's Disease.International journal of molecular sciences · 2025
    Review
  8. Review
  9. Probiotics and prebiotics in the treatment of functional constipation in the elderly individuals.World journal of gastrointestinal pharmacology and therapeutics · 2025
    Review
  10. Review
  11. Journal of Parkinson's disease · 2025
    Review
  12. Review
  13. Review
  14. Review
  15. Review
  16. Review
  17. Review
  18. Review
  19. The Role of Diet in Parkinson's Disease.Journal of Parkinson's disease · 2024
    Review
  20. Review
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

3 authors at 2 institutions in 1 country.

Chien-Tai HongDepartment of Neurology, Shuang-Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.
Jia-Hung ChenDepartment of Neurology, Shuang-Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.
Tsai-Wei HuangSchool of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan.
Taipei Medical University-Shuang Ho Hospital · TWTaipei Medical University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsPeople with Parkinson disease (PwP) exhibit gut dysbiosis and considerable gastrointestinal (GI) symptoms. Probiotics, beneficial strains of microorganisms, supplement and optimize the intestinal environment and alleviate GI symptoms among elderly people. We conducted a systematic review and meta-analysis of clinical trials to investigate the effects of probiotics on PwP.

methodsWe searched the PubMed, Embase, and Cochrane Library databases. Major outcomes were the effects on GI symptoms, including bowel movement and stool characteristics. This study was registered with PROSPERO (CRD42021262036).

resultsSix randomized controlled trials (RCTs) and two open-label studies were included. Most of the probiotic regimens were based on Lactobacillus and Bifidobacterium. Six studies investigated the benefit of probiotics for GI symptoms, especially for PwP with functional constipation, and two RCTs assessed probiotics' effect on systematic metabolism and inflammation. In the meta-analysis, probiotic treatment significantly increased the frequency of bowel movements among PwP (mean difference [MD]: 1.06 /week, 95% confidence interval [CI]: 0.61 to 1.51, p < 0.001, I

conclusionsAlthough the probiotic compositions varied, probiotic treatment significantly attenuated constipation for PwP and exhibited possible systematic effects on inflammation and metabolism. Given the tolerability of probiotics, the present meta-analysis may provide more consolidated evidence of the benefit of probiotics on constipation in PwP and a possible new therapeutic approach for disease modification.

Indexed as

Parkinson DiseaseProbioticsAgedConstipationHumansInflammationLactobacillusconstipationmeta-analysisParkinson diseaseprobiotics

Identifiers

PMID36084951
PMCPMC9512504
OpenAlexW4295226848

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.