Evidence map›Paper›PMID 38779414›Full record

ArticleeNeurologicalSci2024

The effects of lactulose on constipation in patients with Parkinson's disease: An exploratory pilot study.

Shin-Ichiro Kubo, Mako Ito, Kyoko Matsuba, Tomohiro Shimono

Abstract read
In one paragraph

Article in eNeurologicalSci, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

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

  1. Guideline
  2. Synbiotic combination ofGut microbes reports · 2025
    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

4 authors.

Shin-Ichiro KuboParkinson's Disease Center, Department of Neurology, Eisei Clinic, 588-17 Kunugidamachi, Hachioji, Tokyo 193-0942, Japan.
Mako ItoNutrition Department, Eisei Clinic, 588-17 Kunugidamachi, Hachioji, Tokyo 193-0942, Japan.
Kyoko MatsubaNutrition Department, Eisei Clinic, 588-17 Kunugidamachi, Hachioji, Tokyo 193-0942, Japan.
Tomohiro ShimonoMorinaga Milk Industry Clinico Co., Ltd., 4-4-22, Meguro, Meguro-Ku, Tokyo 153-0063. Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Constipation is one of the most common non-motor symptoms of Parkinson's disease (PD) and is associated with reduced quality of life in patients with PD. The aim of this study was to evaluate the effect of lactulose on defecation status in patients with PD. Methods: In this open-label, single-center, exploratory pilot study, twenty-nine patients with PD received lactulose for three weeks for the treatment of constipation. The primary endpoint was the number of spontaneous bowel movements (SBMs). The secondary endpoints were stool consistency (Bristol Stool Form Scale [BSFS]) and the number of rescue laxatives used. Results: Twenty-five patients with PD completed the study. The number of SBMs recorded during the lactulose intervention period was significantly increased compared with that recorded during the pre-intervention period. During the intervention period, the BSFS scores of the patients increased significantly, whereas the number of rescue laxatives they used decreased significantly. No serious adverse events were observed during the study period. Lactulose was well-tolerated. Conclusions: The results of this study suggest that lactulose may be effective in improving defecation status in patients with PD. Further randomized controlled trials are needed to confirm the effects of lactulose on constipation in patients with PD.

Indexed as

ConstipationLactuloseParkinson's diseasePrebiotics

Identifiers

PMID38779414
PMCPMC11108808

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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.