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Intracerebroventricular Delivery of Gut-Derived Microbial Metabolites in Freely Moving Mice
Published on: June 2, 2022
Microbes and the gut-brain axis
P Bercik1, S M Collins, E F Verdu
1Farcombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada.
Neurogastroenterology and Motility
|March 13, 2012
Summary
Microbes play a key role in the gut-brain axis communication. Research, primarily from animal models, shows bacteria significantly influence this bidirectional pathway, impacting gut and brain health.
Area of Science:
- Microbiology
- Neuroscience
- Gastroenterology
Background:
- The gut-brain axis is a complex bidirectional communication system involving neural and humoral pathways.
- Microbes are increasingly recognized as critical signaling components within this axis.
- Evidence primarily stems from animal models, highlighting microbial influence on gut-brain communication.
Purpose of the Study:
- To review the role of gut microbes (commensals, probiotics, pathogens) in bottom-up gut-brain axis communication.
- To explore how bacteria modulate gut-brain communication.
- To discuss implications for functional and inflammatory gut conditions and psychiatric comorbidities.
Main Methods:
- Literature review focusing on microbial roles in the gut-brain axis.
- Analysis of evidence from animal studies.
- Synthesis of current knowledge on bacterial modulation of gut-brain communication.
Main Results:
- Animal studies provide strong evidence for microbial signaling within the gut-brain axis.
- Multiple mechanisms likely mediate microbial communication.
- Bacteria, including commensals, probiotics, and pathogens, are key modulators.
Conclusions:
- Microbial signaling is a significant factor in the gut-brain axis.
- Current understanding is largely based on animal models.
- Future research needs to translate these findings to human studies.
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