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血细胞疗法后心肌轻链粉样蛋白负荷的变化

Dominik C Benz¹, Olivier F Clerc¹, Sarah A M Cuddy²

¹Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA; Cardiac Amyloidosis Program, Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA; CV Imaging Program, Cardiovascular Division and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

JACC. Cardiovascular imaging

|September 12, 2025

概括

血细胞导向的化疗显著降低了轻链 (AL) 氨基粉症患者的心肌粉样蛋白负担. 这种减少可以在6个月后检测到,并且与生物标志物反应相关.

科学领域:

心脏病学心脏病学
核医学就是核医学.
在瘤学瘤学.

背景情况:

目前的轻链 (AL) 氨基化症疗法向血细胞,但它们对心脏氨基化物沉积物的影响尚不清楚.
了解心肌粉样蛋白负荷变化对于评估治疗疗效至关重要.

研究的目的:

评估血细胞向化疗后心肌粉样蛋白负荷的纵向变化.
为了将粉样蛋白负荷变化与心脏生物标志物和重塑相关联.

主要方法:

对81名活检证明AL粉样性粉症的患者进行前性研究.
连续18F-florbetapirPET/CT和心脏MRI (包括ECV) 在基线,6个月和12个月.
分子粉样蛋白负担由18F-florbetapir%ID评估;生物标志物响应由NT-proBNP变化定义.

主要成果:

心肌粉样蛋白负荷 (%ID) 在AL粉样蛋白心肌病患者的6个月和12个月显著下降.
%ID降低与NT-proBNP反应相关,并且在生物标志物响应者中显著.
细胞外体积 (ECV) 在响应者中没有变化,但在不响应者中增加; % ID 在非心肌病患者中没有变化.

结论:

血细胞疗法有效降低心肌AL粉样蛋白负担,可在6个月内使用18F-florbetapir PET/CT检测到.
18F-florbetapir %ID和ECV的变化反映了AL氨基粉症中心肌重塑的不同方面.
分子成像为AL氨基粉症的治疗反应提供了宝贵的见解.

关键词:

在AL氨基粉症症.在CMR中,CMR是CMR.聚乙烯/聚乙烯/聚乙烯粉胺PET是一种PET.这是心脏病,心脏病.花是泰皮尔的花.治疗对治疗的反应反应.

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