The flavonoid apigenin protects brain neurovascular coupling against amyloid-β25-35-induced toxicity in mice

Rui Liu, Tiantai Zhang, Haiguang Yang, Xi Lan, Jian Ying, Guanhua Du

Research output: Contribution to journalArticlepeer-review

Abstract

Apigenin, one of the most common flavonoids, has demonstrated anti-inflammatory, anticarcinogenic, and free radical-scavenging activities. Recent studies revealed its protective effects against amyloid-β (Aβ)-induced neurotoxicity, but the mechanism was unclear. In the present study, we aimed to explore the anti-amnesic and protective effects of apigenin against Aβ25-35-induced toxicity and the underlying mechanisms in the cerebral cortex in mice. The learning and memory impairments, changes in morphology of major components of neurovascular unit, ultrastructural changes and oxidative stress of cerebral cortex, cerebrovascular dysfunction, and neuronal changes were detected after oral administration of apigenin continuously for 8 days. Our results demonstrate that oral administration of apigenin for Aβ25-35-induced amnesic mice conferred robust neurovascular coupling protection, involving improvement of the learning and memory capabilities, maintenance of neurovascular unit integrity, modulation of microvascular function, reduction of neurovascular oxidative damage, increase of regional cerebral blood flow, improvement of cholinergic system involving the inhibition of AChE activity and elevation of ACh level, and modification of BNDF, TrkB, and phospho-CREB levels.

Original languageEnglish (US)
Pages (from-to)85-100
Number of pages16
JournalJournal of Alzheimer's Disease
Volume24
Issue number1
DOIs
StatePublished - 2011
Externally publishedYes

Keywords

  • Amyloid-β peptide
  • apigenin
  • blood-brain barrier
  • neurovascular unit

ASJC Scopus subject areas

  • Neuroscience(all)
  • Clinical Psychology
  • Geriatrics and Gerontology
  • Psychiatry and Mental health

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