期刊
NUTRITION REVIEWS
卷 68, 期 12, 页码 719-728出版社
OXFORD UNIV PRESS INC
DOI: 10.1111/j.1753-4887.2010.00336.x
关键词
aging; cognitive function; flavonoid; microglia; neuroinflammation
资金
- National Institutes of Health (NIH) [AG16710, MH069148]
Microglial cells, which are resident macrophages in the central nervous system, are primed in the aged brain and are hypersensitive to messages emerging from immune-to-brain signaling pathways. Thus, in elderly individuals who have an infection, microglia overreact to signals from the peripheral immune system and produce excessive levels of cytokines, causing behavioral pathology including serious deficits in cognition. Importantly, recent studies indicate dietary flavonoids have anti-inflammatory properties and are capable of mitigating microglial cells in the brains of aged mice. Thus, dietary or supplemental flavonoids and other bioactive agents have the potential to restore the population of microglial cells in the elderly brain to its youthful state. This review briefly describes the immune-to-brain signaling pathways, consequences of microglial cell priming, and the potential of flavonoids to mitigate brain microglia and cognitive deficits induced by inflammatory cytokines.
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