کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8350532 | 1541849 | 2015 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Orally administrated pterostilbene attenuates acute cerebral ischemia-reperfusion injury in a dose- and time-dependent manner in mice
ترجمه فارسی عنوان
پتروستیلبن خوراکی آسیب ایسکمی حاد مغز را در دوز و زمان وابسته به موش کاهش می دهد
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کلمات کلیدی
پتروستیلبن، ایسکمی / رپرفیسم مغزی، استرس اکسیداتیو، آپوپتوز موش،
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
Pterostilbene (3,5-dimethoxy-4-hydroxystilbene) is a component of blueberry. It has been reported that long-term treatment with blueberry has a neuroprotective effect. However, it has not been reported whether pterostilbene is effective in attenuating cerebral ischemia/reperfusion (I/R) injury. In the present study, focal cerebral ischemia was induced by middle cerebral artery occlusion for 90Â min followed by reperfusion. To observe the dose-dependent effect, pterostilbene (2.5-80Â mg/kg, ig) was administered for 3Â days before ischemia. To determine the time-dependent effect, pterostilbene (10Â mg/kg, ig) was administered as a single dose at 0, 1, or 3Â h after reperfusion. Twenty-four hours after I/R, pterostilbene dose-dependently improved neurological function, reduced brain infarct volume, and alleviated brain edema. The most effective dose was 10Â mg/kg; the therapeutic time window was within 1Â h after I/R and treatment immediately after reperfusion showed the best protective effect. The protective effect is further confirmed by the results that post-ischemic treatment with pterostilbene (10Â mg/kg) significantly improved motor function, alleviated blood brain barrier disruption, increased neurons survival and reduced cell apoptosis in cortical penumbra after cerebral I/R. We also found that pterostilbene (10Â mg/kg) significantly reversed the increased content of malondialdehyde and the decreased activity of superoxide dismutase in the ipsilateral hemisphere. Furthermore, pterostilbene decreased the oxidative stress markers 4-hydroxynonenal and 8-hydroxyguanosine positive cells in the cortical penumbra. All these findings indicate that pterostilbene dose- and time-dependently exerts a neuroprotective effect against acute cerebral I/R injury. This neuroprotective effect of pterostilbene may be associated with its inhibition of oxidative stress and subsequent neuronal apoptosis in the cortical penumbra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pharmacology Biochemistry and Behavior - Volume 135, August 2015, Pages 199-209
Journal: Pharmacology Biochemistry and Behavior - Volume 135, August 2015, Pages 199-209
نویسندگان
Yu Zhou, Xue-mei Zhang, Ang Ma, Ya-li Zhang, Yan-yi Chen, Hao Zhou, Wen-jun Li, Xin Jin,