Cited by 246Gut microbiota and healthGastrointestinal motility and disordersAnimal Nutrition and Physiology

Memory and learning behavior in mice is temporally associated with diet-induced alterations in gut bacteria

Li, Wang, Dowd, Scot E., Scurlock, Bobbie, Acosta-Martinez, Veronica, Lyte, Mark·2009·Physiology & Behavior

Abstract

The ability of dietary manipulation to influence learning and behavior is well recognized and almost exclusively interpreted as direct effects of dietary constituents on the central nervous system. The role of dietary modification on gut bacterial populations and the possibility of such microbial population shifts related to learning and behavior is poorly understood. The purpose of this study was to examine whether shifts in bacterial diversity due to dietary manipulation could be correlated with changes in memory and learning. Five week old male CF1 mice were randomly assigned to receive standard rodent chow (PP diet) or chow containing 50% lean ground beef (BD diet) for 3 months. As a measure of memory and learning, both groups were trained and tested on a hole-board open field apparatus. Following behavioral testing, all mice were sacrificed and colonic stool samples collected and analyzed by automated rRNA intergenic spacer analysis (ARISA) and bacterial tag-encoded FLX amplicon pyrosequencing (bTEFAP) approach for microbial diversity. Results demonstrated significantly higher bacterial diversity in the beef supplemented diet group according to ARISA and bTEFAP. Compared to the PP diet, the BD diet fed mice displayed improved working (P=0.0008) and reference memory (P<0.0001). The BD diet fed animals also displayed slower speed (P<0.0001) in seeking food as well as reduced anxiety level in the first day of testing (P=0.0004). In conclusion, we observed a correlation between dietary induced shifts in bacteria diversity and animal behavior that may indicate a role for gut bacterial diversity in memory and learning.

Integrity signals

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Crossref · 10.1016/j.physbeh.2008.12.004

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  • The L. casei intervention mitigates intestinal barrier dysfunction, inhibits microglia activation, and protects brain neurons from oxidative stress and neuroinflammation.

    “The intervention was shown to mitigate intestinal barrier dysfunction, inhibit the activation of microglia, and protect brain neurons from oxidative stress and neuroinflammation.”
  • In a D-galactose/aluminum chloride-induced Alzheimer's disease model, selenium nanoparticles-enriched L. casei (ATCC 393) administered for thirteen weeks significantly improves cognitive dysfunction and minimizes β-amyloid aggregation, Tau hyperphosphorylation, and neuronal death by modulating the Akt/CREB/BDNF signaling pathway.

    “In a D-galactose/aluminum chloride-induced model of Alzheimer’s disease, selenium nanoparticles-enriched L. casei (ATCC 393) administered for thirteen weeks significantly improved cognitive dysfunction and minimized β-amyloid aggregation, hyperphosphorylation of Tau protein, and prevented neuronal death by modulating the Akt/cAMP-response element binding protein/BDNF signaling pathway (502).”
  • Proposed mechanisms linking poor diet and obesity to cognitive dysfunction include changes in GM composition and function, alterations in microbial metabolites, compromised barrier integrity, peripheral and central inflammatory processes, and hormonal, glucoregulatory, and cardiovascular changes.

    “Proposed mechanisms include changes in GM composition and function, alterations in microbial metabolites, compromised barrier integrity, and peripheral and central inflammatory processes, as well as hormonal, glucoregulatory, and cardiovascular changes (502, 511, 512).”

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Authors
Li, W., Dowd, S. E., Scurlock, B., Acosta-Martinez, V., & Lyte, M.
Affiliations
  • Texas Tech University (US)
  • Cropping Systems Research Laboratory (US)
Corresponding author
Lyte, Mark
Venue
Physiology & Behavior
Publisher
Elsevier BV
Published
2009-03
Volume
96
Issue
4-5
Pages
557-567
ISSN
0031-9384 (ISSN-L)
OpenAlex
W2044729604
Cited by
246
References
81
Citations by year
2026: 3 · 2025: 8 · 2024: 12 · 2023: 16 · 2022: 18 · 2021: 11 · 2020: 13 · 2019: 16 · 2018: 17 · 2017: 22 · 2016: 21 · 2015: 15 · 2014: 19 · 2013: 18 · 2012: 11
FWCI
3.55
Type
journal article
Language
en
Open access
closed
Locations
  • Physiology & Behavior (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
Keywords
gut microbiota, dietary intervention, memory, learning behavior, gut microbiota diversity, anxiety, working memory, reference memory, CF1 mice
MeSH terms
Analysis of Variance, Animals, Animal Feed, Association Learning, Bacteria, Colon, Dietary Proteins, Discrimination Learning, Exploratory Behavior, Longitudinal Studies, Male, Memory, Random Allocation, RNA, Bacterial, RNA, Ribosomal, Spatial Behavior, Time Factors, Colony Count, Microbial, Statistics, Nonparametric, DNA, Intergenic, Biodiversity, Mice

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