Piracetam Ameliorated Oxygen and Glucose Deprivation-Induced Injury in Rat Cortical Neurons Via Inhibition of Oxidative Stress, Excitatory Amino Acids Release and P53/Bax
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  • 作者:Zhi He (1)
    Min Hu (1)
    Yun-hong Zha (2)
    Zi-cheng Li (1)
    Bo Zhao (1)
    Ling-ling Yu (1)
    Min Yu (2)
    Ying Qian (3)
  • 关键词:Piracetam ; Oxygen and glucose deprivation ; Glutamate ; P53 ; Bax
  • 刊名:Cellular and Molecular Neurobiology
  • 出版年:2014
  • 出版时间:May 2014
  • 年:2014
  • 卷:34
  • 期:4
  • 页码:539-547
  • 全文大小:657 KB
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  • 作者单位:Zhi He (1)
    Min Hu (1)
    Yun-hong Zha (2)
    Zi-cheng Li (1)
    Bo Zhao (1)
    Ling-ling Yu (1)
    Min Yu (2)
    Ying Qian (3)

    1. Medical School of China Three Gorges University, Yichang, China
    2. The First Renmin Hospital of Yichang City, Yichang, China
    3. Department of Obstetrics and Gynecology, East Hospital, Tongji University, Shanghai, China
  • ISSN:1573-6830
文摘
Our previous work has demonstrated that piracetam inhibited the decrease in amino acid content induced by chronic hypoperfusion, ameliorated the dysfunction of learning and memory in a hypoperfusion rat model, down-regulated P53, and BAX protein, facilitated the synaptic plasticity, and may be helpful in the treatment of vascular dementia. To explore the precise mechanism, the present study further evaluated effects of piracetam on Oxygen and glucose deprivation (OGD)-induced neuronal damage in rat primary cortical cells. The addition of piracetam to the cultured cells 12?h before OGD for 4?h significantly reduced neuronal damage as determined by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay and lactate dehydrogenase release experiments. Piracetam also lowered the levels of malondialdehyde, nitrogen monoxidum, and xanthine oxidase which was increased in the OGD cells, and enhanced the activities of superoxide dismutase and glutathione peroxidase, which were decreased in the OGD cells. We also demonstrated that piracetam could decrease glutamate and aspartate release when cortical cells were subjected to OGD. Furthermore, Western blot study demonstrated that piracetam attenuated the increased expression of P53 and BAX protein in OGD cells. These observations demonstrated that piracetam reduced OGD-induced neuronal damage by inhibiting the oxidative stress and decreasing excitatory amino acids release and lowering P53/Bax protein expression in OGD cells.

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