Cited by 163Probiotics and Fermented FoodsGut microbiota and healthGastrointestinal motility and disorders

Bifidobacterium longum 1714™ Strain Modulates Brain Activity of Healthy Volunteers During Social Stress

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Wang, Huiying, Braun, Christoph, Murphy, Eileen F., Enck, Paul·2019·American Journal of Gastroenterology

Abstract

OBJECTIVES: Accumulating evidence indicates that the gut microbiota communicates with the central nervous system, possibly through neural, endocrine, and immune pathways, and influences brain function. B. longum 1714™ has previously been shown to attenuate cortisol output and stress responses in healthy subjects exposed to an acute stressor. However, the ability of B. longum 1714™ to modulate brain function in humans is unclear. METHODS: In a randomized, double-blinded, placebo-controlled trial, the effects of B. longum 1714™ on neural responses to social stress, induced by the "Cyberball game," a standardized social stress paradigm, were studied. Forty healthy volunteers received either B. longum 1714™ or placebo for 4 weeks at a dose of 1 × 10 cfu/d. Brain activity was measured using magnetoencephalography and health status using the 36-item short-form health survey. RESULTS: B. longum 1714™ altered resting-state neural oscillations, with an increase in theta band power in the frontal and cingulate cortex (P < 0.05) and a decrease in beta-3 band in the hippocampus, fusiform, and temporal cortex (P < 0.05), both of which were associated with subjective vitality changes. All groups showed increased social stress after a 4-week intervention without an effect at behavioral level due to small sample numbers. However, only B. longum 1714™ altered neural oscillation after social stress, with increased theta and alpha band power in the frontal and cingulate cortex (P < 0.05) and supramarginal gyrus (P < 0.05). DISCUSSION: B. longum 1714™ modulated resting neural activity that correlated with enhanced vitality and reduced mental fatigue. Furthermore, B. longum 1714™ modulated neural responses during social stress, which may be involved in the activation of brain coping centers to counter-regulate negative emotions.

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  • Most human intervention studies have focused on probiotic and prebiotic supplementation to manipulate the microbiota and investigate the effect on brain function and mental health.

    “Most human intervention studies have focused on probiotic and prebiotic supplementation to manipulate the microbiota and investigate the effect on brain function and mental health (327, 328).”

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  1. [31]Williams KD Chapter 6 ostracism: A temporal need–threat model. In: Advances in Experimental Social Psychology, Vol 41 Academic Press: San Diego, CA, 2009, pp. 275– 314.

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Authors
Wang, H., Braun, C., Murphy, E. F., & Enck, P.
Affiliations
  • Universitätsklinikum Tübingen (DE)
  • University of Trento (IT)
  • Alimentary Health (Ireland) (IE)
  • University of Tübingen (DE)
Corresponding author
Enck, Paul
Venue
American Journal of Gastroenterology
Published
2019-04-17
Volume
114
Issue
7
Pages
1152-1162
ISSN
  • 0002-9270 (ISSN-L)
  • 1572-0241
OpenAlex
W2942132156
Cited by
159
References
50
Citations by year
2026: 18 · 2025: 24 · 2024: 23 · 2023: 20 · 2022: 26 · 2021: 23 · 2020: 15 · 2019: 9 · 2017: 1
FWCI
14.08
Type
journal article
Language
en
Open access
Locations
  • The American Journal of Gastroenterology (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University College Cork
  • Alimentary Health
  • APC Microbiome Institute
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
probiotics, social stress, gut-brain axis, theta power, beta power, alpha power, Cyberball game, subjective vitality, mental fatigue, cingulate cortex, hippocampus, magnetoencephalography
MeSH terms
Gastrointestinal Microbiome, Bifidobacterium longum, Analysis of Variance, Brain, Double-Blind Method, Female, Humans, Magnetic Resonance Imaging, Male, Stress, Psychological, Statistics, Nonparametric, Probiotics, Young Adult, Healthy Volunteers

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