Journal
ACS CHEMICAL NEUROSCIENCE
Volume 14, Issue 6, Pages 1045-1062Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acschemneuro.2c00803
Keywords
Intestinal microbiota; short-chain fatty acids; flaviviruses; neuroinflammation; CNS disorders
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The gut-brain axis refers to the communication between the brain and gastrointestinal tract, and the role of gut microbiome and short-chain fatty acids in neurodegenerative diseases and neuroinflammation.
The gut-brain axis (GBA) is the umbrella term to include all bidirectional communication between the brain and gastrointestinal (GI) tract in the mammalian body. Evidence from over two centuries describes a significant role of GI microbiome in health and disease states of the host organism. Short-chain fatty acids (SCFAs), mainly acetate, butyrate, and propionate that are the physiological forms of acetic acid, butyric acid, and propionic acid respectively, are GI bacteria derived metabolites. SCFAs have been reported to influence cellular function in multiple neuro-degenerative diseases (NDDs). In addition, the inflammation modulating properties of SCFAs make them suitable therapeutic candidates in neuroinflammatory conditions. This review provides a historical background of the GBA and current knowledge of the GI microbiome and role of individual SCFAs in central nervous system (CNS) disorders. Recently, a few reports have also identified the effects of GI metabolites in the case of viral infections. Among these viruses, the flaviviridae family is associated with neuroinflammation and deterioration of CNS functions. In this context, we additionally introduce SCFA based mechanisms in different viral pathogenesis to understand the former's potential as agents against flaviviral disease.
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