Cited by 107Treatment of Major DepressionTryptophan and brain disordersMedicinal Plant Extracts Effects

Food‐derived hydrophilic antioxidant ergothioneine is distributed to the brain and exerts antidepressant effect in mice

Open access
Nakamichi, Noritaka, Nakayama, Keigo, Ishimoto, Takahiro, Masuo, Yusuke, Wakayama, Tomohiko, Sekiguchi, Hirotaka, Sutoh, Keita, Usumi, Koji +2 more·2016·Brain and Behavior

Abstract

Background: Clinically used antidepressants suffer from various side effects. Therefore, we searched for a safe antidepressant with minimal side effects among food ingredients that are distributed to the brain. Here, we focused on ERGO (ergothioneine), which is a hydrophilic antioxidant and contained at high levels in edible golden oyster mushrooms. ERGO is a typical substrate of carnitine/organic cation transporter OCTN 1/SLC 22A4, which is expressed in the brain and neuronal stem cells, although little is known about its permeation through the BBB (blood–brain barrier) or its neurological activity. Methods: To clarify the exposure of ERGO to brain and the possible antidepressant‐like effect after oral ingestion, ERGO or GOME (golden oyster mushroom extract) which contains 1.2% (w/w) ERGO was mixed with feed and provided to mice for 2 weeks, and then ERGO concentration and antidepressant‐like effect were evaluated by LC‐MS/MS and FST (forced swimming test) or TST (tail suspension test), respectively. Results: Diet containing ERGO or GOME greatly increased the ERGO concentrations in plasma and brain, and significantly decreased the immobility time in both FST and TST. The required amount of GOME (~37 mg/day) to show the antidepressant‐like effect corresponds to at most 8 g/day in humans. In mice receiving GOME‐containing diet, doublecortin‐positive cells showed a significant increase from the basal level, suggesting promotion of neuronal differentiation. Conclusion: Thus, orally ingested ERGO is transported across the BBB into the brain, where it may promote neuronal differentiation and alleviate symptoms of depression at plausibly achieved level of daily ingestion.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1002/brb3.477

Cites

35 of 35 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Nakamichi, N., Nakayama, K., Ishimoto, T., Masuo, Y., Wakayama, T., Sekiguchi, H., Sutoh, K., Usumi, K., Iseki, S., & Kato, Y.
Affiliations
  • Kanazawa University (JP)
  • Life Science Institute (JP)
Corresponding author
Kato, Yukio
Venue
Brain and Behavior
Publisher
Wiley
Published
2016-04-22
Volume
6
Issue
6
Pages
e00477-e00477
ISSN
  • 2157-9032 (ISSN-L)
  • 2162-3279
OpenAlex
W2336156830
Cited by
107
References
35
Citations by year
2026: 14 · 2025: 16 · 2024: 14 · 2023: 9 · 2022: 14 · 2021: 16 · 2020: 9 · 2019: 7 · 2018: 5 · 2017: 3
FWCI
4.05
Type
journal article
Language
en
Open access
Locations
  • Brain and Behavior (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
Ministry of Education, Culture, Sports, Science, and Technology (25460092, 24390040, 15H04664)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Complementary and alternative medicine › Medicinal Plant Extracts Effects
Keywords
ergothioneine, antidepressant effects, depression, blood-brain barrier permeability, golden oyster mushroom, dietary antioxidants, brain distribution, doublecortin, neuronal differentiation, forced swim test, tail suspension test, SLC22A4, food-derived compounds
MeSH terms
Animals, Antidepressive Agents, Antioxidants, Behavior, Animal, Brain, Depression, Ergothioneine, Male, Mice, Inbred C57BL, Plant Extracts, Pleurotus, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review