Cited by 453Gut microbiota and healthAlzheimer's disease research and treatmentsProbiotics and Fermented Foods

Microbiota modulation counteracts Alzheimer’s disease progression influencing neuronal proteolysis and gut hormones plasma levels

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Bonfili, Laura, Cecarini, Valentina, Berardi, Sara, Scarpona, Silvia, Suchodolski, Jan S., Nasuti, Cinzia, Fiorini, Dennis, Boarelli, Maria Chiara +2 more·2017·Scientific Reports

Abstract

Gut microbiota has a proven role in regulating multiple neuro-chemical pathways through the highly interconnected gut-brain axis. Oral bacteriotherapy thus has potential in the treatment of central nervous system-related pathologies, such as Alzheimer’s disease (AD). Current AD treatments aim to prevent onset, delay progression and ameliorate symptoms. In this work, 3xTg-AD mice in the early stage of AD were treated with SLAB51 probiotic formulation, thereby affecting the composition of gut microbiota and its metabolites. This influenced plasma concentration of inflammatory cytokines and key metabolic hormones considered therapeutic targets in neurodegeneration. Treated mice showed partial restoration of two impaired neuronal proteolytic pathways (the ubiquitin proteasome system and autophagy). Their cognitive decline was decreased compared with controls, due to a reduction in brain damage and reduced accumulation of amyloid beta aggregates. Collectively, our results clearly prove that modulation of the microbiota induces positive effects on neuronal pathways that are able to slow down the progression of Alzheimer’s disease.

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Crossref · 10.1038/s41598-017-02587-2

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  • The 3xTg mouse model of AD treated with probiotics in the early stage showed a promising reduction of inflammatory cytokines and decreased cognitive decline associated with reduced brain damage and Aβ aggregate accumulation.

    “Accordingly, the 3xTg mouse model of AD treated with probiotics in the early stage showed a promising reduction of inflammatory cytokines and decreased cognitive decline associated with reduced brain damage and Aβ aggregate accumulation (166).”
  • Plasma ghrelin levels reduce gradually in 3xTg-AD mice with aging, which is reversed by the multi-strain probiotics formulation SLAB51, leading to attenuation of cognitive impairment.

    “plasma ghrelin levels reduce gradually in 3xTg-AD mice with aging, which is reversed by the administration of multi-strain probiotics formulation (SLAB51), leading to the attenuation of cognitive impairment.”
  • Elevation of plasma leptin levels via chronic administration of multi-strain probiotics ameliorates Aβ pathology in 3xTg-AD mice.

    “the elevation of plasma leptin levels via chronic administration of multi-strain probiotics has been shown to ameliorate Aβ pathology in 3xTg-AD mice.”
  • The probiotic SLAB51 improves cognition and reduces amyloid plaques, brain injury, and inflammatory cytokine plasma levels in AD mice.

    “further, the probiotic SLAB51, a formulation of nine live bacterial strains (Streptococcus thermophilus, B. longum, B. breve, B. infantis, L. acidophilus, L. plantarum, L. paracasei, L. delbrueckii subsp. bulgaricus, and L. brevis) improves cognition and reduces the accumulation of amyloid plaques, brain injury, and inflammatory cytokines plasma levels in AD mice [322],”

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Authors
Bonfili, L., Cecarini, V., Berardi, S., Scarpona, S., Suchodolski, J. S., Nasuti, C., Fiorini, D., Boarelli, M. C., Rossi, G., & Eleuteri, A. M.
Affiliations
  • Università di Camerino (IT)
  • Texas A&M University (US)
Corresponding author
Bonfili, Laura
Venue
Scientific Reports
Published
2017-05-25
Volume
7
Issue
1
Pages
2426-2426
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2615406383
Cited by
453
References
98
Citations by year
2026: 28 · 2025: 47 · 2024: 60 · 2023: 54 · 2022: 74 · 2021: 73 · 2020: 46 · 2019: 40 · 2018: 26 · 2017: 5
FWCI
13.07
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Unicam Scientific Publications (University of Camerino) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • OakTrust (Texas A&M University Libraries) (submittedVersion)
Funders
Università degli Studi di Camerino
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
Keywords
Alzheimer's disease, gut microbiota, probiotics, gut-brain axis, 3xTg-AD mice, ubiquitin-proteasome system, autophagy, amyloid-beta, cognitive decline, inflammatory cytokines, gastrointestinal hormones, neurodegeneration
MeSH terms
Alzheimer Disease, Amyloid, Animals, Autophagy, Cerebral Cortex, Cognition, Disease Models, Animal, Gastrointestinal Hormones, Male, Mice, Transgenic, Neurons, Biomarkers, Cytokines, Disease Progression, Inflammation Mediators, Proteasome Endopeptidase Complex, Mice, Proteolysis, Microbiota

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