Links between Gut bacteria, Prebiotic and Reduction in Risk of Alzheimer’s Disease in Elderly
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Abstract
The alteration of gut microbial composition or gut dysbiosis in elderly adults can cause Alzheimer’s disease which is related to directional gut-brain axis communication. Some bacteria can produce neurotoxin metabolite products in the gut such as lipopolysaccharide (LPS), β-N-methylamino-L-alanine (BMMA) and β-amyloids which affect the inflammation and neuron impairment in the central nervous system (CNS) via various pathways. Prebiotic or fiber consumption from vegetables, fruits, and cereals can activate short-chain fatty acid bacteria or probiotic bacteria. They can produce anti-inflammation metabolites and decrease the epithelial permeability of neurotoxic metabolites. Consequently, these may prevent the risk of Alzheimer’s disease which cause by gut dysbiosis in the elderly.
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