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Microbiota and neurodegenerative diseases.

Moira Marizzoni1, Stefania Provasi, Annamaria Cattaneo

  • 1aLaboratory of Neuroimaging and Alzheimer's Epidemiology bLaboratory of Biological Psychiatry, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy cStress, Psychiatry and Immunology Laboratory, Department of Psychological Medicine, Institute of Psychiatry, King's College, London, UK dMemory Clinic and LANVIE - Laboratory of Neuroimaging of Aging, University Hospitals and University of Geneva, Geneva, Switzerland.

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Summary

Alterations in the human microbiota are linked to neurodegenerative diseases like Parkinson's and Alzheimer's. Restoring gut microbial balance may offer new therapeutic strategies for brain health.

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Area of Science:

  • Microbiology
  • Neuroscience
  • Gastroenterology

Background:

  • Neurodegenerative diseases remain poorly understood, with limited effective treatments.
  • The human microbiota, particularly the gut microbiota, is increasingly implicated in neurological health and disease.

Purpose of the Study:

  • To review current knowledge on the role of the microbiota in neurodegenerative disorders.
  • To discuss potential strategies for restoring microbiota homeostasis.

Main Methods:

  • Review of preclinical evidence.
  • Analysis of human cross-sectional studies.
  • Synthesis of existing literature on gut microbiota and neurodegeneration.

Main Results:

  • Gut microbiota alterations are associated with Parkinson's disease onset, progression, and symptoms.
  • Microbiota changes correlate with brain disease and inflammation in Alzheimer's patients.

Conclusions:

  • The host-microbiota interaction presents a promising avenue for understanding and treating neurodegenerative disorders.
  • Longitudinal human studies are crucial to establish causality and develop targeted therapies for preventing or slowing brain damage.