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- W2009283021 abstract "Oxidative stress is considered a major contributing factor in cerebral ischemia/reperfusion injury. Phloretin, a dihydrochalcone belonging to the flavonoid family, is particularly rich in apples and apple-derived products. A large body of evidence demonstrates that phloretin exhibits anti-oxidant properties, and phloretin has potential implications for treating oxidative stress injuries in cerebral ischemia/reperfusion. Therefore, the neuroprotective and antioxidant effects of phloretin against ischemia/reperfusion injury, as well as related probable mechanisms, were investigated. The cerebral ischemic/reperfusion injury model was reproduced in male Sprague–Dawley rats through middle cerebral artery occlusion. At 24 h after reperfusion, neurological score, infarct volume, and brain water content were assessed. Oxidative stress was evaluated by superoxide dismutases (SOD), glutathione (GSH), glutathione peroxidase (GSH-Px), and malondialdehyde (MDA) levels. Nrf2 expression was measured by RT-PCR and western blot. Consequently, results showed that phloretin pretreatment for 14 days significantly reduced infarct volume and brain edema, and ameliorated neurological scores in focal cerebral ischemia/reperfusion rats. SOD, GSH and GSH-Px activities were greatly decreased, and MDA levels significantly increased after ischemia/reperfusion injury. However, phloretin pretreatment dramatically suppressed these oxidative stress processes. Furthermore, phloretin upregulated Nrf2 mRNA and protein expression of in ischemia/reperfusion brain tissue. Taken together, phloretin exhibited neuroprotective effects in cerebral ischemia/reperfusion, and the mechanisms are associated with oxidative stress inhibition and Nrf2 defense pathway activation." @default.
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- W2009283021 date "2015-04-01" @default.
- W2009283021 modified "2023-10-02" @default.
- W2009283021 title "Activation of the Nrf2 defense pathway contributes to neuroprotective effects of phloretin on oxidative stress injury after cerebral ischemia/reperfusion in rats" @default.
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- W2009283021 doi "https://doi.org/10.1016/j.jns.2015.02.045" @default.
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