Journal
IMMUNE NETWORK
Volume 21, Issue 3, Pages -Publisher
KOREA ASSOC IMMUNOLOGISTS
DOI: 10.4110/in.2021.21.e20
Keywords
Intestine; Brain; Microbiome; Stroke; Short; chain fatty acid; Aryl hydrocarbon receptor
Categories
Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT, and Future Planning [NRF-2020R1A2B5B01001690]
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The gut microbiome plays a key role in regulating immune, metabolic, and nervous systems in cooperation with the host. Disruptions in microbial communities have been linked to neurological disorders, highlighting the importance of the gut-brain axis. The dynamic communication between the gut and brain can impact mood and behaviors.
The gut is an important organ with digestive and immune regulatory function which consistently harbors microbiome ecosystem. The gut microbiome cooperates with the host to regulate the development and function of the immune, metabolic, and nervous systems. It can influence disease processes in the gut as well as extra-intestinal organs, including the brain. The gut closely connects with the central nervous system through dynamic bidirectional communication along the gut-brain axis. The connection between gut environment and brain may affect host mood and behaviors. Disruptions in microbial communities have been implicated in several neurological disorders. A link between the gut microbiota and the brain has long been described, but recent studies have started to reveal the underlying mechanism of the impact of the gut microbiota and gut barrier integrity on the brain and behavior. Here, we summarized the gut barrier environment and the 4 main gut-brain axis pathways. We focused on the important function of gut barrier on neurological diseases such as stress responses and ischemic stroke. Finally, we described the impact of representative environmental sensors generated by gut bacteria on acute neurological disease via the gut-brain axis.
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