Evidence map›Paper›PMID 33441865›Full record

ArticleScientific reports2021

The alga Euglena gracilis stimulates Faecalibacterium in the gut and contributes to increased defecation.

Ayaka Nakashima, Kengo Sasaki, Daisuke Sasaki, Kosuke Yasuda, Kengo Suzuki, Akihiko Kondo

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

21 citing papers in PubMed, 40 citations in OpenAlex.

  1. Trial
  2. Article
  3. Food science & nutrition · 2025
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  4. Review
  5. Review
  6. Activation of Immune and Antiviral Effects byFoods (Basel, Switzerland) · 2023
    Review
  7. Review
  8. Foods (Basel, Switzerland) · 2023
    Article
  9. Article
  10. Frontiers in nutrition · 2023
    Article
  11. Life (Basel, Switzerland) · 2022
    Review
  12. Review
  13. Paramylon and Other Bioactive Molecules in Micro and Macroalgae.International journal of molecular sciences · 2022
    Review
  14. Oral Administration ofCirculation reports · 2022
    Article
  15. Article
  16. Article
  17. Article
  18. Frontiers in nutrition · 2022
    Article
  19. Article
  20. Frontiers in bioengineering and biotechnology · 2021
    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 at 1 institution in 1 country.

Ayaka NakashimaThe Research and Development Department, euglena Co., Ltd., Tokyo, 108-0014, Japan. nakashima@euglena.jp.
Kengo SasakiGraduate School of Science, Technology, and Innovation, Kobe University, Kobe, Hyogo, 657-8501, Japan. sikengo@people.kobe-u.ac.jp.
Daisuke SasakiGraduate School of Science, Technology, and Innovation, Kobe University, Kobe, Hyogo, 657-8501, Japan.
Kosuke YasudaThe Research and Development Department, euglena Co., Ltd., Tokyo, 108-0014, Japan.
Kengo SuzukiThe Research and Development Department, euglena Co., Ltd., Tokyo, 108-0014, Japan.
Akihiko KondoGraduate School of Science, Technology, and Innovation, Kobe University, Kobe, Hyogo, 657-8501, Japan.
Kobe University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The alga Euglena gracilis (E. gracilis) has recently gained attention as a health food, but its effects on human gut microbiota remain unknown. This study aimed to determine the effect of E. gracilis on gut microbiota and defecation due to modulation of microbiota composition in vitro and in vivo. The in vitro model simulating human colonic microbiota revealed that E. gracilis addition stimulated the growth of commensal Faecalibacterium. Further, E. gracilis addition enhanced butyrate production by Faecalibacterium prausnitzii. Paramylon, an insoluble dietary fibre that accumulates in E. gracilis and is the main component of E. gracilis, did not stimulate Faecalibacterium growth in vitro. Daily ingestion of 2 g of E. gracilis for 30 days increased bowel movement frequency as well as stool volume in 28 human participants. Collectively, these findings indicate that E. gracilis components other than paramylon, stimulate the growth of Faecalibacterium to improve digestive health as well as promote defecation by increasing butyrate production.

Indexed as

DefecationAdultButyratesEuglena gracilisFaecalibacteriumFaecalibacterium prausnitziiGastrointestinal MicrobiomeHumansMiddle AgedReal-Time Polymerase Chain ReactionButyrates

Identifiers

PMID33441865
PMCPMC7806897
OpenAlexW3118461064

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.