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评估粉样蛋白PET阳性和唐氏综合征的认知功能,以指导针对粉样蛋白的临床试验
Sophia Krasny1, Cynthia Yan2, Sigan L Hartley3
1Scripps Research Institute, La Jolla, California, USA.
概括
40岁以上的唐氏综合征 (DS) 个体表现出快速增加的粉样蛋白阳性,在认知症状出现之前有显著的滞后. 这凸显了针对年龄的阿尔茨海默氏症患者的需要.
科学领域:
- 神经学 神经学
- 遗传学 是一个遗传学.
- 生物标志物 生物标志物
背景情况:
- 唐氏综合症 (DS),由三胞体21引起,显著增加了早期发病的阿尔茨海默病 (AD) 的风险.
- 目前针对AD的粉样蛋白向单克隆抗体 (mAb) 疗法尚未在DS人群中进行评估.
- 了解AD在DS中的进展对于开发向治疗至关重要.
研究的目的:
- 在不同年龄组的唐氏综合征成年人中调查粉样质子发射断层扫描 (PET) 阳性 (A+) 的患病率.
- 为了评估粉样蛋白负担,记忆功能和DS患者的临床状况之间的关系.
- 在DS中为mAb疗法的未来临床试验设计提供信息.
主要方法:
- 来自阿尔茨海默氏症生物标志物联盟-唐氏综合征 (ABC-DS) 研究的横截面数据的分析.
- 通过使用Centiloid值的Amyloid-beta PET成像来确定粉样蛋白的状态.
- 通过经过修改的Cued Recall测试评估的情节性记忆;通过共识确定临床状态.
主要成果:
- 总共分析了409名患有DS的成年人 (平均年龄为44.83岁).
- 粉样蛋白PET阳性 (A+) 的流行率和平均粉样蛋白负载随着年龄的增长而显著增加.
- 观察到与年龄相关的记忆功能下降和认知障碍增加.
结论:
- 在40岁以后的唐氏综合征患者中,粉样β-PET阳性的快速增加发生.
- 在DS中,粉样蛋白阳性开始和临床症状表现之间存在显著的延迟.
- 在DS中单克隆抗体治疗的临床试验设计必须考虑到AD病理和表现的与年龄相关的变化.
关键词:
阿尔茨海默病的疾病阿尔茨海默病的疾病.唐氏综合征是什么意思 唐氏综合征成年人成年人成年人成年人成年人氨基化物 氨基化物临床试验是指临床试验中的临床试验.有关认知性的认知.痴呆症 痴呆症是一种痴呆症.影像成像技术 影像成像技术定子发射断层扫描 (PET).更多相关视频
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