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Development of a Positron Emission Tomography Radiotracer for Imaging Elevated Levels of Superoxide in Neuroinflammation.
ACS Chemical Neuroscience ( IF 4.1 ) Pub Date : 2017-12-03 , DOI: 10.1021/acschemneuro.7b00385
Catherine Hou 1 , Chia-Ju Hsieh 1 , Shihong Li 1 , Hsiaoju Lee 1 , Thomas J Graham 1 , Kuiying Xu 1 , Chi-Chang Weng 1 , Robert K Doot 1 , Wenhua Chu 2 , Subhasish K Chakraborty 3 , Laura L Dugan 3 , Mark A Mintun 2 , Robert H Mach 1
Affiliation  

Reactive oxygen species (ROS) are believed to play a major role in the proinflammatory, M1-polarized form of neuroinflammation. However, it has been difficult to assess the role of ROS and their role in neuroinflammation in animal models of disease because of the absence of probes capable of measuring their presence with the functional imaging technique positron emission tomography (PET). This study describes the synthesis and in vivo evaluation of [18F]ROStrace, a radiotracer for imaging superoxide in vivo with PET, in an LPS model of neuroinflammation. [18F]ROStrace was found to rapidly cross the blood-brain barrier (BBB) and was trapped in the brain of LPS-treated animals but not the control group. [18F] ox-ROStrace, the oxidized form of [18F]ROStrace, did not cross the BBB. These data suggest that [18F]ROStrace is a suitable radiotracer for imaging superoxide levels in the central nervous system with PET.

中文翻译:

正电子发射断层显像示踪剂的开发,用于影像显示神经炎症中超氧化物的升高水平。

活性氧(ROS)被认为在神经炎症的促炎性,M1极化形式中起主要作用。但是,由于缺乏能够使用功能成像技术正电子发射断层扫描(PET)来测量其存在的探针,因此很难评估ROS在疾病动物模型中的作用及其在神经炎症中的作用。这项研究描述了[18F] ROStrace的合成和体内评估,这是一种在神经炎症的LPS模型中利用PET在体内对超氧化物成像的放射性示踪剂。发现[18F] ROStrace可以快速穿过血脑屏障(BBB),并被困在LPS治疗的动物的大脑中,而不是在对照组中。[18 F] ROStrace的氧化形式[18 F] ROStrace没有穿过血脑屏障。
更新日期:2017-11-03
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