Evidence map›Paper›PMID 34958017›Full record

ArticleJournal of Alzheimer's disease : JAD2022

Probiotic Bifidobacterium breve Prevents Memory Impairment Through the Reduction of Both Amyloid-β Production and Microglia Activation in APP Knock-In Mouse.

Mona Abdelhamid, Chunyu Zhou, Kazuya Ohno, Tetsuya Kuhara, Ferdous Taslima, Mohammad Abdullah, Cha-Gyun Jung, Makoto Michikawa

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Journal of Alzheimer's disease : JAD, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 42 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 3 pooled it
2.9field-weighted citation impact, top 8% 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

42 citing papers in PubMed, 3 syntheses or guidelines pooled it, 63 citations in OpenAlex.

  1. Nutrients · 2025
    Pooled it
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  5. Review
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  7. Isoquinoline alkaloids inChinese herbal medicines · 2026
    Article
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  10. Review
  11. Article
  12. Regulating the crosstalk betweenFrontiers in immunology · 2026
    Review
  13. Article
  14. Review
  15. Preventive Effect of ProbioticAntioxidants (Basel, Switzerland) · 2025
    Article
  16. Review
  17. Heat-KilledJournal of microbiology and biotechnology · 2025
    Article
  18. Review
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Mona AbdelhamidDepartment of Biochemistry, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.
Chunyu ZhouDepartment of Biochemistry, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.
Kazuya OhnoNext Generation Science Institute, Morinaga Milk Industry Co., Ltd., Zama, Japan.
Tetsuya KuharaNext Generation Science Institute, Morinaga Milk Industry Co., Ltd., Zama, Japan.
Ferdous TaslimaDepartment of Biochemistry, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.
Mohammad AbdullahDepartment of Biochemistry, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.
Cha-Gyun JungDepartment of Biochemistry, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.
Makoto MichikawaDepartment of Biochemistry, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.
Nagoya City University · JPMorinaga (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundProbiotic supplementation reestablishes microbiome diversity and improves brain function in Alzheimer's disease (AD); their molecular mechanisms, however, have not yet been fully illustrated.

objectiveWe investigated the effects of orally supplemented Bifidobacterium breve MCC1274 on cognitive function and AD-like pathologies in AppNL-G-F mice.

methodsThree-month-old AppNL-G-F mice were orally supplemented with B. breve MCC1274 for four months. The short-term memory function was evaluated using a novel object recognition test. Amyloid plaques, amyloid-β (Aβ) levels, Aβ fibril, amyloid-β protein precursor and its processing enzymes, its metabolic products, glial activity, and cell proliferation in the subgranular zone of the dentate gyrus were evaluated by immunohistochemistry, Aβ ELISA, western blotting, and immunofluorescence staining. The mRNA expression levels of pro- and anti-inflammatory cytokines were determined by qRT-PCR analysis.

resultsWe found that the oral B. breve MCC1 274 supplementation prevented memory impairment in AppNL-G-F mice and decreased hippocampal Aβ levels through the enhancement of the a-disintegrin and metalloproteinase 10 (ADAM10) level. Moreover, administration of the probiotic activated the ERK/HIF-1α signaling pathway responsible for increasing the ADAM10 level and also attenuated microglial activation, which in turn led to reduction in the mRNA expression levels of pro-inflammatory cytokines in the brain. In addition, B. breve MCC1274 supplementation increased the level of synaptic proteins in the hippocampus.

conclusionOur findings support the possibility that oral B. breve MCC1274 supplementation might be used as a potential preventive therapy for AD progression.

Indexed as

ProbioticsAmyloid beta-PeptidesAnimalsBifidobacterium breveBrainDisease Models, AnimalHippocampusMemory DisordersMiceMice, TransgenicMicrogliaAmyloid beta-PeptidesADAM10Alzheimer’s diseaseamyloid-β productionBifidobacterium breve MCC1274ERKglial activationHIF-1αnovel object recognitionsynapses

Identifiers

PMID34958017
PMCPMC8925106
OpenAlexW4200292186

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.