Cited by 203Gut microbiota and healthGastrointestinal motility and disordersGenetics, Aging, and Longevity in Model Organisms

Revisiting Metchnikoff: Age-related alterations in microbiota-gut-brain axis in the mouse

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Scott, Karen A., Ida, Masayuki, Peterson, Veronica L., Prenderville, Jack A., Moloney, Gerard M., Izumo, Takayuki, Murphy, Kiera, Murphy, Amy +4 more·2017·Brain, Behavior, and Immunity

Abstract

Over the last decade, there has been increased interest in the role of the gut microbiome in health including brain health. This is by no means a new theory; Elie Metchnikoff proposed over a century ago that targeting the gut by consuming lactic acid bacteria such as those in yogurt, could improve or delay the onset of cognitive decline associated with ageing. However, there is limited information characterising the relationship between the behavioural and physiological sequelae of ageing and alterations in the gut microbiome. To this end, we assessed the behavioural, physiological and caecal microbiota profile of aged male mice. Older mice (20-21months old) exhibited deficits in spatial memory and increases in anxiety-like behaviours compared to younger mice (2-3months old). They also exhibited increased gut permeability, which was directly correlated with elevations in peripheral pro-inflammatory cytokines. Furthermore, stress exacerbated the gut permeability of aged mice. Examination of the caecal microbiota revealed significant increases in phylum TM7, family Porphyromonadaceae and genus Odoribacter of aged mice. This represents a shift of aged microbiota towards a profile previously associated with inflammatory disease, particularly gastrointestinal and liver disorders. Furthermore, Porphyromonadaceae, which has also been associated with cognitive decline and affective disorders, was directly correlated with anxiety-like behaviour in aged mice. These changes suggest that changes in the gut microbiota and associated increases in gut permeability and peripheral inflammation may be important mediators of the impairments in behavioural, affective and cognitive functions seen in ageing.

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Crossref · 10.1016/j.bbi.2017.02.004

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  • Aged mice have a higher relative abundance of Porphyromonadaceae and the levels of this family correlate with increased anxiety-like behavior.

    “aged mice have a higher relative abundance of Porphyromonadaceae and that the levels of this family correlate with increased anxiety-like behavior”

    From The Microbiota-Gut-Brain Axis (2019) · cites this paper as Scott et al., 2017

  • The intestinal microbiota is implicated as a key regulator of systemic homeostasis, including neuroinflammation and behavioral disorders.

    “Sequencing studies showing associations between particular gut microbiota profiles and various diseases in humans, along with studies modifying the gut bacterial composition in animal models, by probiotic administration or microbiota transfer, implicate the gut microbiota as a key regulator of systemic homeostasis, including neuroinflammation and behavioral disorders [16, 106].”

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Authors
Scott, K. A., Ida, M., Peterson, V. L., Prenderville, J. A., Moloney, G. M., Izumo, T., Murphy, K., Murphy, A., Ross, R. P., Stanton, C., Dinan, T. G., & Cryan, J. F.
Affiliations
  • University College Cork (IE)
  • Suntory (Japan) (JP)
  • Teagasc - The Irish Agriculture and Food Development Authority (IE)
Corresponding author
Cryan, John F.
Venue
Brain, Behavior, and Immunity
Publisher
Elsevier BV
Published
2017-10
Volume
65
Pages
20-32
ISSN
0889-1591 (ISSN-L)
OpenAlex
W2585159410
Cited by
202
References
87
Citations by year
2026: 5 · 2025: 13 · 2024: 21 · 2023: 15 · 2022: 32 · 2021: 27 · 2020: 24 · 2019: 34 · 2018: 20 · 2017: 11
FWCI
9.95
Type
journal article
Language
en
Open access
Locations
  • Brain Behavior and Immunity (acceptedVersion)
  • PubMed (publishedVersion)
  • Arrow@dit (Dublin Institute of Technology) (acceptedVersion)
  • Cork Open Research Archive (University College Cork, Ireland) (submittedVersion, cc-by-nc-nd)
Funders
  • Science Foundation Ireland
  • SFI
  • Health Research Board (12)
  • Department of Agriculture, Food & the Marine
  • Enterprise Ireland
  • APC Microbiome Institute
  • University College Cork
  • AstraZeneca
  • Mead Johnson
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
gut microbiota, microbiota-gut-brain axis, aging, cognitive decline, spatial memory, anxiety-like behavior, intestinal permeability, peripheral inflammation, inflammatory cytokines, Porphyromonadaceae, Odoribacter, cecal microbiota, stress, lactic acid bacteria, mouse model
MeSH terms
Gastrointestinal Microbiome, Age Factors, Animals, Anxiety, Behavior, Animal, Brain, Cognition, Inflammation, Male, Mice, Inbred C57BL, Cytokines, Porphyromonas, Gastrointestinal Tract, Mice, Microbiota

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