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- W3005342570 abstract "Alzheimer's disease (AD) is a central degenerative disease characterized by cognitive impairment. Polymerization of β-amyloid has been reported to cause the entanglement of nerve cells, leading to the progressive loss of nerve cells. Accumulative studies have confirmed the important roles of neuroinflammation in the development of AD. In this study, the gut microbiota from AD patients were transplanted into APP/PS1 double transgenic mice. As a result, the expression of NLRP3 was increased in the intestinal tract of mice, and the expression levels of inflammatory factors in peripheral blood were also increased. Consistently, the cognitive impairment was more severe in mice receiving gut microbiota from AD patients than those did not, with activation of microglia in the central hippocampus of mice, and increased expression of neuroinflammatory factors. In APP/PS1 mice transplanted with gut microbiota from AD patients, transplantation of healthy human gut microbiota or oral administration of minocycline was further used to improve the composition of gut microbiota. Consequently, the intestinal expression of NLRP3 was down-regulated, the cognitive ability of mice was improved, the activation of microglia in central hippocampus was suppressed and the expression of neuroinflammatory factors was also down-regulated. After transplantation of gut microbiota from AD patients in C57BL/6 mice, the intestinal expression of NLRP3 was up-regulated. Although the cognitive ability of mice was not significantly changed, the microglia in the hippocampus of mice were still activated and the expression of inflammatory factors was up-regulated. In this study, we found that gut microbiota in AD patients could induce the activation of NLRP3 inflammasome in the intestinal tract of mice, subsequently causing the release of inflammatory factors. The absorption and circulation of inflammatory factors through the intestinal tract could further aggravate the inflammation in the nervous tissues and the activation of microglia. Therefore, improving the composition of gut microbiota in AD patients can further attenuate neuroinflammation, which is considered as a novel idea for AD treatment." @default.
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- W3005342570 date "2020-06-01" @default.
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- W3005342570 title "New mechanism of neuroinflammation in Alzheimer's disease: The activation of NLRP3 inflammasome mediated by gut microbiota" @default.
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- W3005342570 doi "https://doi.org/10.1016/j.pnpbp.2020.109884" @default.
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