Evidence map›Paper›PMID 37612759›Full record

ArticleBioPsychoSocial medicine2023

Oral administration of 6-methylsulfinylhexyl isothiocyanate extracted from wasabi is safe and improves the fatigue and sleep of healthy volunteers.

Ryota Nakajima, Masanobu Kanou, Masahiko Tokushima, Yoshitaka Iwama, Kei Yamana

Abstract read
In one paragraph

Article in BioPsychoSocial medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Trial
  2. Review
  3. 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

5 authors.

Ryota NakajimaNutraceutical Group, Division of New Business in Healthcare Business, Teijin Ltd., 2-1, Kasumigaseki 3-chome, Chiyoda-ku, Tokyo, 100-8585, Japan. r.nakajima@teijin.co.jp.ORCID http://orcid.org/0000-0002-2326-2658
Masanobu KanouNutraceutical Group, Division of New Business in Healthcare Business, Teijin Ltd., 2-1, Kasumigaseki 3-chome, Chiyoda-ku, Tokyo, 100-8585, Japan.
Masahiko TokushimaMaebashi North Hospital, Maebashi, Japan.
Yoshitaka IwamaNihonbashi Cardiology Clinic, Tokyo, Japan.
Kei YamanaNutraceutical Group, Division of New Business in Healthcare Business, Teijin Ltd., 2-1, Kasumigaseki 3-chome, Chiyoda-ku, Tokyo, 100-8585, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study aimed to conduct a preliminary evaluation of the effects of 6-methylsulfinylhexyl isothiocyanate (6-MSITC) contained in wasabi rhizomes on fatigue and sleep and to examine its safety through overdose study.

methodsA total of 20 healthy volunteers who were experiencing daily fatigue were given powder containing 6-MSITC (4.8 mg/day of 6-MSITC) extracted from wasabi for 4 weeks. Then, fatigue, sleep, autonomic nervous functioning, stress, and immunity were evaluated. In addition, an overdose safety study of the extract powder (up to 16 mg/day of 6-MSITC for 4 weeks) was performed with 30 healthy volunteers in a double-blind, placebo-controlled method.

resultsThe powder containing 6-MSITC did not improve fatigue after a mental task, but fatigue before the mental task, sleep, and mood were improved significantly after 4 weeks intake. No changes were observed in the autonomic nerve function, stress, or immune markers. In the overdose safety study, no changes in the parameters ​​or side effects were observed, and the results showed that high doses of the extract powder containing 6-MSITC is safe.

conclusionThis study confirmed the possibility that this powder extracted from wasabi that contains 6-MSITC might improve fatigue and sleep. However, because the effectiveness evaluation in this study was a single-arm, open-label study and there was no placebo control group, these points must be considered when interpreting the results. Safety was confirmed in an overdose study of more than three times the amount compared to that in the efficacy evaluation study. In the future, further research should be conducted on its effectiveness for treating fatigue and sleep problems.

trial registrationUMIN clinical trial registration system, UMIN000049913. Registered 27 December 2022 Retrospectively registered, https://center6.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000056818.

Indexed as

6-MSITCClinical studyFatigueSafety studySleepWasabi extract powder

Identifiers

PMID37612759
PMCPMC10463496

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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.