生物标志物 生物标志物
Kavon J Sharifi1, Jessica Hu2, Hope Shimony1
1Washington University School of Medicine, St. Louis, MO, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
一个便携式的低场核磁共振 (MRI) 显示出对接受莱卡尼马布治疗的阿尔茨海默病患者的监测有希望,准确检测ARIA-E (胀),但不能检测ARIA-H (微出血). 这可以改善患者和医疗机构获得必要的MRI扫描的机会.
科学领域:
- 神经学 神经学
- 医疗成像医学成像
- 药理学 药理学是指药理学的学科.
背景情况:
- 莱卡内马布是FDA批准的阿尔茨海默病 (AD) 免疫疗法,需要定期对粉样蛋白相关成像异常 (ARIA) 的MRI监测.
- ARIA可以表现为脑 (ARIA-E) 或微出血 (ARIA-H),需要及时检测.
- 目前的MRI要求给患者,护理人员和医疗机构带来了重大后勤和可访问性挑战,可能会限制治疗机会.
研究的目的:
- 为了评估超低场的可行性,便携式MRI系统用于基线和接受lecanemab治疗的患者的安全监测.
- 为了比较便携式低场MRI与标准临床MRI的诊断性能,用于检测阿尔茨海默病患者的ARIA.
主要方法:
- 纳入了31名接受或已停止使用lecanemab治疗的AD患者.
- 参与者在临床MRI后一周内使用0.064T高精度Swoop®便携式MR成像系统进行了MRI扫描.
- 追溯数据分析包括患者年龄,ARIA病史,以及低场和临床MRI扫描的读数.
主要成果:
- 低场MRI系统在检测轻度和中度ARIA-E时实现了100%的灵敏度.
- 该系统对ARIA-H (微出血) 不敏感.
- 在临床MRI上检测到的偶发性体内血瘤在低场MRI上也可识别.
结论:
- 超低电场,便携式MRI显示高灵敏度检测ARIA-E,一个关键的副作用的lecanemab.
- 这项技术可以作为标准1.5/3T临床MRI扫描的适当替代品,可能减轻患者和医疗保健系统的负担.
- 需要进一步验证,以确认其在莱卡尼马布治疗阿尔茨海默病患者的常规监测中的作用,特别是ARIA-H检测.
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