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Related Experiment Video

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A Method to Assess Bacteriocin Effects on the Gut Microbiota of Mice
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Polyphenols-gut microbiota interplay and brain neuromodulation.

Stefania Filosa1, Francesco Di Meo2, Stefania Crispi2

  • 1Institute of Biosciences and Bioresources, National Research Council, via P. Castellino, Naples; Istituto di Ricovero e Cura a Carattere Scientifico Neuromed, Pozzilli, Italy.

Neural Regeneration Research
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Summary

Dietary polyphenols and their gut microbiota metabolites offer neuroprotection and enhance cognitive function. Modulating the gut microbiome through diet is crucial for brain health and preventing neurodegeneration.

Keywords:
gut-brain axisgut-microbiotametagenomicneurodegenerationneurotransmitterspolyphenolsprebioticsprobiotics

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Area of Science:

  • Neuroscience
  • Microbiology
  • Nutrition Science

Background:

  • Polyphenols from diet show promise for neuronal protection against oxidative stress and inflammation.
  • These compounds may also enhance cognitive functions.
  • Gut microbiota biotransformation is essential for producing brain-active polyphenol metabolites.

Purpose of the Study:

  • To explore the role of the microbiota-gut-brain axis in mediating polyphenol effects on brain health.
  • To investigate how gut microbiota metabolism of polyphenols impacts neuronal function and cognitive processes.
  • To highlight the potential of dietary interventions for neuroprotection and preventing neurodegeneration.

Main Methods:

  • Literature review on polyphenol metabolism by gut microbiota.
  • Analysis of the bidirectional communication within the microbiota-gut-brain axis.
  • Examination of the influence of diet, probiotics, prebiotics, and polyphenols on gut microbiota composition.
  • Review of evidence linking gut microbiota alterations to neurodegenerative diseases.

Main Results:

  • Polyphenol metabolites can cross the blood-brain barrier or modulate the cerebrovascular system.
  • Microbiota-derived metabolites can act as neurotransmitters, influencing brain biochemistry and gut bacterial composition.
  • Dietary changes and gut dysfunctions are linked to neurodegenerative diseases.
  • Alterations in gut microbiota and the enteric neuroimmune system may contribute to age-related brain disorders.

Conclusions:

  • Maintaining a healthy gut microbiome through dietary modulation, including polyphenol intake, is vital for lifelong brain health.
  • Polyphenols positively impact microbiota composition, supporting brain function.
  • Polyphenols and their metabolites are emerging as potential therapeutic agents for preventing neurodegeneration.