Evidence map›Paper›PMID 38462520›Full record

ArticleInternal medicine (Tokyo, Japan)2024

Japanese Mucuna pruriens (Hasshou Beans) Showed Fast-acting and Long-lasting Effects in Parkinson's Disease.

Mayumi Sakata, Katsuichi Miyamoto, Jinsoo Koh, Yasuhiro Nagashima, Tomoyoshi Kondo, Hidefumi Ito

Abstract read
In one paragraph

Article in Internal medicine (Tokyo, Japan), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–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

10 citing papers in PubMed.

  1. Trial
  2. Plant-derived therapies in Parkinson's disease: a systematic review of clinical evidence.Journal of neural transmission (Vienna, Austria : 1996) · 2026
    Review
  3. "Journal of Parkinson's disease · 2026
    Review
  4. Safety Assessment of the Ethanolic Seed Extract ofPharmaceuticals (Basel, Switzerland) · 2026
    Article
  5. Review
  6. Review
  7. Levodopa treatment: impacts and mechanisms throughout Parkinson's disease progression.Journal of neural transmission (Vienna, Austria : 1996) · 2025
    Review
  8. Parkinson's disease · 2025
    Review
  9. Neurology international · 2024
    Review
  10. Effects ofCurrent issues in molecular biology · 2024
    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

6 authors.

Mayumi SakataDepartment of Neurology, Wakayama Medical University, Japan.
Katsuichi MiyamotoDepartment of Neurology, Wakayama Medical University, Japan.
Jinsoo KohDepartment of Neurology, Wakayama Medical University, Japan.
Yasuhiro NagashimaKunimoto Life Support Clinic, Japan.
Tomoyoshi KondoHananoie Hospital, Japan.
Hidefumi ItoDepartment of Neurology, Wakayama Medical University, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective Mucuna pruriens (MP) is a legume whose seeds contain levodopa (LD), which has potential therapeutic effects against Parkinson's disease (PD). However, further research is needed to thoroughly evaluate its efficacy and safety for treating this condition. In this study, we analyzed the pharmacokinetics of MP grown in Japan and investigated its mechanism of action in PD. Methods MP seeds ground after roasting (containing 4.02% LD per MP powder) were used as the reagent and compared with an equivalent LD/carbidopa (CD) preparation. This clinical trial was conducted using a crossover design among PD patients attending our institution. Each patient received a single dose of 100/10 mg LD/CD tablets and 11 g of MP reagent. Results Among the seven patients with PD, MP prolonged the ON time 2-fold compared to LD/CD. The LD concentrations after MP intake were higher than those after LD/CD intake, whereas dyskinesia did not increase. An analysis of the LD metabolites showed that the 3-O-methyl-dopa/LD metabolic ratio was significantly lower after MP ingestion than after LD/CD ingestion, indicating that MP has a catechol-O-methyl transferase inhibitory effect. Conclusions This is the first report of a pharmacokinetic analysis conducted on actual patients with PD showing that MP significantly prolongs the ON time. The advantages of MP as a treatment for PD have been confirmed: it is inexpensive, as effective as LD, works faster and longer than LD, and does not increase dyskinesia.

Indexed as

CarbidopaLevodopaMucunaParkinson DiseasePlant PreparationsAgedAged, 80 and overAntiparkinson AgentsCross-Over StudiesDrug CombinationsFemaleHumansJapanMaleMiddle AgedSeedsAntiparkinson AgentsCarbidopaDrug CombinationsLevodopaPlant PreparationsCOMT inhibitiondyskinesialevodopaMucuna pruriensParkinson's disease

Identifiers

PMID38462520
PMCPMC11557210

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LicenceCC BY-NC-ND
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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.