Anti-apoptotic and Anti-oxidative Roles of Quercetin After Traumatic Brain Injury
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  • 作者:Tao Yang (1) (2)
    Bin Kong (1) (2)
    Jian-Wen Gu (1)
    Yong-Qin Kuang (1)
    Lin Cheng (1)
    Wen-Tao Yang (1)
    Xun Xia (1) (2)
    Hai-Feng Shu (1)
  • 关键词:Traumatic brain injury ; Quercetin ; Oxidative stress ; Inflammation ; Apoptosis
  • 刊名:Cellular and Molecular Neurobiology
  • 出版年:2014
  • 出版时间:August 2014
  • 年:2014
  • 卷:34
  • 期:6
  • 页码:797-804
  • 全文大小:1,759 KB
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  • 作者单位:Tao Yang (1) (2)
    Bin Kong (1) (2)
    Jian-Wen Gu (1)
    Yong-Qin Kuang (1)
    Lin Cheng (1)
    Wen-Tao Yang (1)
    Xun Xia (1) (2)
    Hai-Feng Shu (1)

    1. Department of Neurosurgery, Chengdu Military General Hospital, No. 270, Rong Du Road, Chengdu, 610083, Sichuan, China
    2. Third Military Medical University, Chongqing, 400038, China
  • ISSN:1573-6830
文摘
Experimental studies have demonstrated significant secondary damage (including cell apoptosis, blood–brain barrier disruption, inflammatory responses, excitotoxic damage, and free radical production) after traumatic brain injury (TBI). Quercetin is a natural flavonoid found in high quantities in fruits and vegetables, and may be a potential antioxidant and free radical scavenger. The purpose of this study was to determine the effects of quercetin on TBI-induced upregulation of oxidative stress, inflammation, and apoptosis in adult Sprague–Dawley rats. Animals were subjected to Feeney’s weight-drop injury, thus inducing the parietal contusion brain injury model. Quercetin was administered (30?mg/kg intraperitoneal injection) 0, 24, 48, and 72?h after TBI. Quercetin reduced cognitive deficits, the number of TUNEL- and ED-1-positive cells, the protein expressions of Bax and cleaved-caspase-3 proteins, and the levels of TBARS and proinflammatory cytokines, and increased the activity of antioxidant enzymes (GSH-Px, SOD, and CAT) at 1?week after TBI. Our results suggest that in TBI rats, quercetin improves cognitive function owing to its neuroprotective action via the inhibition of oxidative stress, leading to a reduced inflammatory response, thereby reducing neuronal death.

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