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Related Concept Videos

Gut-Brain Axis01:22

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The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such...
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Bifidobacteria modulate cognitive processes in an anxious mouse strain.

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  • 1Alimentary Pharmabiotic Centre, University College Cork, Ireland; School of Pharmacy, University College Cork, Ireland.

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Probiotics like Bifidobacterium longum 1714 show potential for enhancing cognition. This study found specific Bifidobacteria strains improved learning and memory in mice, highlighting the gut-brain axis in cognitive function.

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Area of Science:

  • Neuroscience
  • Microbiology
  • Gastroenterology

Background:

  • The brain-gut-microbiome axis influences behavior, but its role in cognition is under-researched.
  • Probiotics, beneficial bacteria, are known to reduce anxiety and depression.

Purpose of the Study:

  • To investigate the impact of Bifidobacterium longum 1714 and Bifidobacterium breve 1205 on cognitive functions.
  • To assess the effect of these probiotics on visceral pain sensitivity.

Main Methods:

  • Adult male mice were administered B. longum 1714, B. breve 1205, or vehicle for 11 weeks.
  • Cognitive abilities, locomotor activity, and visceral pain sensitivity were evaluated using behavioral tests.

Main Results:

  • B. longum 1714 significantly improved performance in object recognition, Barnes maze, and fear conditioning tests.
  • B. breve 1205 showed enhanced object recognition compared to controls.
  • No probiotic strain affected visceral pain sensitivity.

Conclusions:

  • Bifidobacterium longum 1714 demonstrates a positive effect on cognitive processes in mice.
  • The cognitive benefits of probiotics are strain-specific and do not generalize across species.
  • Further clinical studies are needed to validate these findings in humans.