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Published in: Metabolic Brain Disease 2/2021

01-02-2021 | Alzheimer's Disease | Original Article

Physical exercise prevents amyloid β1−40-induced disturbances in NLRP3 inflammasome pathway in the hippocampus of mice

Authors: Julia M. Rosa, Anderson Camargo, Ingrid A. V. Wolin, Manuella P. Kaster, Ana Lúcia S. Rodrigues

Published in: Metabolic Brain Disease | Issue 2/2021

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Abstract

Amyloid beta (Aβ), one of the main hallmarks of Alzheimer’s Disease (AD), may stimulate pattern recognition receptors (PRR) such as the NLRP3 inflammasome, inducing a pro-inflammatory state in the brain that contributes to disease development. Physical exercise can have multiple beneficial effects on brain function, including anti-inflammatory and neuroprotective roles. The objective of this study was to investigate the prophylactic effect of moderate treadmill exercise for 4 weeks on inflammatory events related to NLRP3 signaling in the hippocampus of mice after intracerebroventricular Aβ1−40 administration. Our results show that Aβ1−40 administration (400 pmol/mouse, i.c.v.) significantly increased the immunocontent Iba-1 (a microglial reactivity marker), NLRP3, TXNIP, and caspase-1 in the hippocampus of mice. However, physical exercise prevented the hippocampal increase in Iba-1, TXNIP, and activation of the NLRP3 inflammasome pathway caused by Aβ1−40. Moreover, physical exercise per se reduced the TXNIP and caspase-1 immunocontent in the hippocampus. No alterations were observed on the immunocontent of GFAP, ASC, and IL-1β in the hippocampus after Aβ1−40 and/or physical exercise. These results reinforce the role of NLRP3 inflammasome pathway in AD and point to physical exercise as a possible non-pharmacological strategy to prevent inflammatory events triggered by Aβ1−40 in mice.
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Metadata
Title
Physical exercise prevents amyloid β1−40-induced disturbances in NLRP3 inflammasome pathway in the hippocampus of mice
Authors
Julia M. Rosa
Anderson Camargo
Ingrid A. V. Wolin
Manuella P. Kaster
Ana Lúcia S. Rodrigues
Publication date
01-02-2021
Publisher
Springer US
Published in
Metabolic Brain Disease / Issue 2/2021
Print ISSN: 0885-7490
Electronic ISSN: 1573-7365
DOI
https://doi.org/10.1007/s11011-020-00646-8

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