Park Bok-Nam, Kim Su-Min, An Young-Sil
Department of Nuclear Medicine and Molecular Imaging, School of Medicine, Ajou University, 206, World cup-ro, Yeongtong-gu, Suwon-si, Suwon, Gyeonggi-do, 16499, Korea.
BMC Neurosci. 2025 Aug 28;26(1):55. doi: 10.1186/s12868-025-00978-0.
BACKGROUND: Alzheimer's disease (AD) is a progressive neurodegenerative disorder that is the leading cause of dementia, characterized by memory loss, cognitive decline, and significant social and economic burdens. Despite extensive research into amyloid positron emission tomography (PET) radiopharmaceuticals, the effectiveness of various F-labeled tracers for imaging amyloid plaques in AD mouse models remains uncertain. This study aimed to evaluate the performance of three radiopharmaceuticals-F-florbetaben (FBB), F-flutemetamol (FMM), and F-florapronol (FPN)-in differentiating amyloid deposition in AD and control mice. RESULTS: F-FMM and F-FBB demonstrated significantly higher standardized uptake value ratios (SUVRs) in AD mice than in controls. For F-FBB, the mean SUVR in AD mice was 1.06, significantly higher than the 0.81 in controls (p < 0.001). Similarly, F-FMM showed a mean SUVR of 0.97 in AD mice compared to 0.94 in controls (p = 0.024). In contrast, F-FPN did not show significant SUVR differences between AD and control groups (p = 0.071). Comparative analysis revealed that F-FBB exhibited a significantly greater SUVR difference between AD and control groups compared to F-FMM (p < 0.001). CONCLUSIONS: F-FBB emerged as the most effective radiopharmaceutical for imaging amyloid deposition in AD mouse models, providing superior differentiation between AD and control groups. These findings support the optimization of amyloid PET tracers for preclinical studies, facilitating advancements in Alzheimer's research. CLINICAL TRIAL NUMBER: Not applicable.
背景:阿尔茨海默病(AD)是一种进行性神经退行性疾病,是痴呆的主要病因,其特征为记忆力减退、认知功能下降以及巨大的社会和经济负担。尽管对淀粉样蛋白正电子发射断层扫描(PET)放射性药物进行了广泛研究,但各种F标记示踪剂在AD小鼠模型中成像淀粉样斑块的有效性仍不确定。本研究旨在评估三种放射性药物——F-氟贝他班(FBB)、F-氟替美莫(FMM)和F-氟普拉诺(FPN)——在区分AD小鼠和对照小鼠淀粉样蛋白沉积方面的性能。 结果:F-FMM和F-FBB在AD小鼠中的标准化摄取值比率(SUVRs)显著高于对照小鼠。对于F-FBB,AD小鼠的平均SUVR为1.06,显著高于对照小鼠的0.81(p < 0.001)。同样,F-FMM在AD小鼠中的平均SUVR为0.97,而对照小鼠为0.94(p = 0.024)。相比之下,F-FPN在AD组和对照组之间未显示出显著的SUVR差异(p = 0.071)。比较分析显示,与F-FMM相比,F-FBB在AD组和对照组之间的SUVR差异显著更大(p < 0.001)。 结论:F-FBB成为AD小鼠模型中成像淀粉样蛋白沉积最有效的放射性药物,在AD组和对照组之间提供了更好的区分。这些发现支持了用于临床前研究的淀粉样蛋白PET示踪剂的优化,促进了阿尔茨海默病研究的进展。 临床试验编号:不适用。
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