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The microbiome: what a neurologist needs to know.
Anna B Dehghanizai1, Christopher J Stewart2, Rhys H Thomas3,4
1Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK.
Practical Neurology
|March 13, 2025
Summary
The gut microbiome influences the brain via the gut-brain axis, impacting neurological pathways. Research links gut bacteria alterations to neurological disorders, prompting clinical trials for gut-modulating therapies.
Area of Science:
- Microbiology
- Neuroscience
- Gastroenterology
Background:
- The gut microbiome comprises trillions of microorganisms influencing host functions.
- Bidirectional communication between the gut and brain, the gut-brain axis, is modulated by gut microbiota.
- The gut microbiome's role in neurological disorders is an emerging area of research.
Purpose of the Study:
- To explore the connection between the gut microbiome and neurological disorders.
- To review the influence of gut microbiota on the gut-brain axis.
- To discuss the potential of microbiome-targeted therapies for neurological conditions.
Main Methods:
- Review of human and animal studies investigating the gut microbiome and neurological diseases.
- Analysis of microbial metabolites and their impact on the nervous system.
- Examination of alterations in microbial taxa associated with neurological disease states.
Main Results:
- Alterations in specific bacterial taxa are suggested to correlate with neurological disorders like epilepsy, Alzheimer's, and Parkinson's disease.
- While no definitive microbial biomarkers are identified, the gut microbiome's influence on neurological pathways is evident.
- Clinical trials exploring gut-altering treatments show promising preliminary results for modulating neurological function.
Conclusions:
- The gut microbiome significantly impacts neurological function through the gut-brain axis.
- Further research is needed to identify microbial biomarkers for neurological disorders.
- Microbiome-modulating therapies hold potential for treating neurological conditions.
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