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当代阿耳茨海默病研究

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ISSN (Print): 1567-2050
ISSN (Online): 1875-5828

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Research Article

阿兹海默病小鼠模型APPSWE/PS1DE9的[18F]-Florbetaben PET/CT成像

卷 16, 期 1, 2019

页: [49 - 55] 页: 7

弟呕挨: 10.2174/1567205015666181022095904

价格: $65

摘要

背景: 使用18F标记的Florbetaben的正电子发射断层扫描（PET）可以在体内无创评估阿茨海默病（AD）的病理特征淀粉样β（Aβ）的水平。在临床前研究中，[18F]-氟贝塔本PET已经被用来测试无论是在人类还是在大脑淀粉样变性的转基因模型中，新药物的淀粉样蛋白降低潜力。本研究的目的是通过比较组织学上确定的脑Aβ斑块的数量和大小，确定患有AD的APPswe/ PS1dE9小鼠模型中[18F]-氟哌他汀的脑摄取空间模式。 方法: 静脉注射[18F]-氟哌他汀后，通过小动物PET/CT对12个月大的APPswe/PS1dE9和野生型小鼠进行了研究。高分辨率磁共振成像数据被用于通过感兴趣的体积分析量化PET数据。本研究分析了[18F]-氟β本在体内的标准化摄取值（SUV），以及死后大脑皮层、海马和小脑的Aβ斑块负荷。 结果: 视觉检查和SUV显示，与野生型小鼠相比，APPswe/ PS1dE9 小鼠的[18F]-氟哌他汀的大脑摄取增加，特别是在皮质、海马和小脑区域。然而，相对于小脑的SUV比率（SUVRs）显示，APPswe/PS1dE9和野生型小鼠仅海马体有显著差异，而皮质则没有。; 这一差异效应可能反映了在组织学分析中，皮质中的斑块面积低于海马中的斑块面积。 结论: 研究结果表明，在APPswe/PS1dE9小鼠模型中，使用[18F]-氟哌他汀可以在体内描述Aβ斑块大小和空间分布的组织病理学特征。

关键词: 阿茨海默症，正电子发射断层扫描，[18F]-氟β本，诊断，APPswe/PS1dE9小鼠模型，Aβ斑块大小。

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