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基础科学和病原发生学

Arash Salahinejad1,2,3, Amr Eed1,2,3, Mohammad H Alipour1

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概括
此摘要是机器生成的。

早期lecanemab治疗减少了APOE4小鼠的阿尔茨海默氏症病理,但没有预防认知缺陷,可能会增加微型血液. 这项研究强调了接受粉样蛋白向治疗的APOE4载体的风险.

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科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 遗传学 是一个
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 阿尔茨海默病 (AD) 是导致痴呆的主要原因,不成比例地影响APOE4载体.
  • 携带APOE4的患者表现出加速的粉样蛋白-β (Aβ) 积累和与粉样蛋白相关的成像异常 (ARIA) 的风险增加与单克隆抗体 (mAb) 治疗.
  • 莱卡尼马布是一种向Aβ原纤维素的mAb,可以减少粉样质斑块,但对APOE4载体的风险增加.

研究的目的:

  • 调查早期lecanemab (mAb158) 治疗是否可以减轻APOE4人性化阿尔茨海默病小鼠模型中的微型血液和认知衰退.
  • 在APOE4相关遗传风险的背景下,评估mAb158对粉样蛋白病理和大脑缩的影响.
  • 建立一个临床前平台,以评估mAb治疗在AD中的安全性和有效性.

主要方法:

  • 利用具有人性化的APP,Tau和APOE3 / APOE4基因的高级阿尔茨海默病小鼠模型.
  • 每周给 murine lecanemab (mAb158) 或车载药物,持续26周,从3个月大开始给hAppNL-F-APOE4和hAppNL-F-APOE3小鼠.
  • 通过连续性能测试 (CPT) 评估认知表现,并通过显微镜和生物化学测试对粉样蛋白病理,微型血液和Aβ水平分析大脑组织.

主要成果:

  • 与hAppNL-F-hMAPT-APOE3小鼠相比,在hAppNL-F-hMAPT-APOE4小鼠中观察到大量的粉样蛋白积累.
  • mAb158治疗显著降低了hAppNL-F-hMAPT-APOE4小鼠在15个月大时的不溶性Aβ积累.
  • 不管mAb158治疗,APOE4小鼠从6个月开始表现出认知缺陷 (CPT),初步数据表明mAb158可能导致微出血.

结论:

  • 早期的mAb158治疗有效地减少了APOE4人性化小鼠的阿尔茨海默病病理,但不能防止注意力缺陷.
  • 治疗可能会增加脆弱的APOE4基因型中微型血液的风险.
  • 这项研究展示了一个有价值的临床前平台,用于预测阿尔茨海默病单克隆抗体治疗的安全性和疗效.