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首页> 外文期刊>Investigative radiology >Unilateral hypoxic-ischemic injury in the neonatal rat brain evaluated by in vivo MRI. Correlation with histopathology and neuroprotection by MK-801.
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Unilateral hypoxic-ischemic injury in the neonatal rat brain evaluated by in vivo MRI. Correlation with histopathology and neuroprotection by MK-801.

机译:通过体内MRI评估新生大鼠大脑中的单侧缺氧缺血性损伤。与MK-801的组织病理学和神经保护作用相关。

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RATIONALE AND OBJECTIVES: MRI was used for the in vivo evaluation of unilateral hypoxic-ischemic brain injury and the evaluation of MK-801 in the neonatal rat. METHODS: T2-weighted scans were obtained during the acute phase of HI injury and 3 months later. Histology was performed to correlate MRI signal changes with pathology. Finally, the effectiveness of MK-801 to limit brain injury was regionally assessed in vivo using T2-weighted MRI. RESULTS: Injury visualized by MRI at 72 hours after hypoxia correlated strongly with histopathologic analysis. Transient injury was identified. MK-801 significantly reduced the lesion extent at the level of the hippocampus. Patterns of unilateral versus bilateral neonatal brain injury were found to differ. CONCLUSIONS: The study demonstrates unique patterns of brain injury not seen in adult animal hypoxia-ischemia studies, and the sensitivity of the corpus callosum to hypoxia-ischemia. MK-801, although neuroprotective, did not offer any selective neuroprotective benefit.
机译:理由和目的:MRI被用于体内评估新生鼠的单侧缺氧缺血性脑损伤和MK-801。方法:在HI损伤的急性期和3个月后进行T2加权扫描。进行组织学以将MRI信号变化与病理学相关联。最后,使用T2加权MRI在体内对MK-801限制脑损伤的有效性进行了区域评估。结果:缺氧72小时后MRI显示的损伤与组织病理学分析密切相关。确定了短暂性损伤。 MK-801在海马水平上显着降低了病变程度。发现单侧与双侧新生儿脑损伤的模式不同。结论:该研究证明了成年动物缺氧缺血研究中未发现的独特的脑损伤模式,以及call体对缺氧缺血的敏感性。 MK-801虽然具有神经保护作用,但没有提供任何选择性的神经保护作用。

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