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2016 ; 11
(5
): 795-800
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Cyanidin suppresses amyloid beta-induced neurotoxicity by inhibiting reactive
oxygen species-mediated DNA damage and apoptosis in PC12 cells
#MMPMID27335564
Wang Y
; Fu XT
; Li DW
; Wang K
; Wang XZ
; Li Y
; Sun BL
; Yang XY
; Zheng ZC
; Cho NC
Neural Regen Res
2016[May]; 11
(5
): 795-800
PMID27335564
show ga
Amyloid beta (A?)-induced oxidative stress is a major pathologic hallmark of
Alzheimer's disease. Cyanidin, a natural flavonoid compound, is neuroprotective
against oxidative damage-mediated degeneration. However, its molecular mechanism
remains unclear. Here, we investigated the effects of cyanidin pretreatment
against A?-induced neurotoxicity in PC12 cells, and explored the underlying
mechanisms. Cyanidin pretreatment significantly attenuated A?-induced cell
mortality and morphological changes in PC12 cells. Mechanistically, cyanidin
effectively blocked apoptosis induced by A?, by restoring the mitochondrial
membrane potential via upregulation of Bcl-2 protein expression. Moreover,
cyanidin markedly protected PC12 cells from A?-induced DNA damage by blocking
reactive oxide species and superoxide accumulation. These results provide
evidence that cyanidin suppresses A?-induced cytotoxicity, by preventing
oxidative damage mediated by reactive oxide species, which in turn inhibits
mitochondrial apoptosis. Our study demonstrates the therapeutic potential of
cyanidin in the prevention of oxidative stress-mediated A? neurotoxicity.