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Neurochem Int. 2013 Nov;63(5):522-32. doi: 10.1016/j.neuint.2013.08.008. Epub 2013 Sep 4.

Protective effect of flavonoid-rich extract from Rosa laevigata Michx on cerebral ischemia-reperfusion injury through suppression of apoptosis and inflammation.

Author information

1
College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Lvshunkou District, Dalian, Liaoning Province 116044, China.

Abstract

The neuroprotective effect and mechanism of the flavonoid-rich extract (FRE) from Rosa laevigata Michx fruit on cerebral ischemia-reperfusion (I/R) injury were investigated. The contents of flavonoids, saponins and tannin were determined, and ten chemicals including chlorogenic acid, 4-hydroxy-3-methoxybenzoic acid, apigenin, luteolin, kaempferol, querce-tin, kaempferide-3-O-glucoside, quercetin-3-rhamnoside, rutin and isorhamnetin-3-O-β-rutinoside from the crude extract were separated. Oral administration of FRE obviously improved the survival rate and prevented I/R-induced disability and histological damage. Further works showed that the natural product had excellent antioxidant activity, significantly decreased DNA fragmentation, up-regulated the expression of Bcl-2, and down-regulated the expressions of p53, Apaf1, Fas, FasL, Bax, Bid, cytochrome C and active Caspase-3, -9 and -8. Moreover, the FRE decreased the expressions of NF-κB, iNOS, MMP-9, COX-2, TNF-α, IL-1β, IL-4, IL-6, and down-regulated the levels of p-JNK, p-ERK and p-p38 in MAPK pathways. Therefore, the flavonoid-rich extract from R. laevigata Michx fruit has the potential actions for treatment of ischemic stroke due to its anti-oxidant, anti-apoptosis and anti-inflammatory properties.

KEYWORDS:

Apoptosis; Cerebral ischemia reperfusion; Flavonoid-rich extract; Free radicals; Neuroinflammation; Rosa laevigata Michx

PMID:
24012531
DOI:
10.1016/j.neuint.2013.08.008
[Indexed for MEDLINE]

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