Positron emission tomography for measurement of copper fluxes in live organisms.

Positron emission tomography for measurement of copper fluxes in live organisms.
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DOI:
10.1111/nyas.12383
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发表时间:
2014-05
影响因子:
5.2
通讯作者:
Peng F
Peng F
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Peng F

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铜是生物体生理必需的营养素,但过量的铜可能有害。铜放射性同位素用于通过体液放射性测定或全身正电子发射断层扫描 (PET) 测量活体生物体中的铜通量。混合正电子发射断层扫描-计算机断层扫描 (PET/CT) 是一种实时测量铜通量的多功能工具,结合了 PET 的高灵敏度和定量能力以及 CT 的卓越空间分辨率,可用于放射性示踪剂活动的解剖定位。对 Atp7b−/− 敲除小鼠(威尔逊病小鼠模型)肝脏和其他肝外组织中铜代谢的动力学分析证明了使用 64 氯化铜 (64CuCl2) 作为放射性示踪剂 (64CuCl2-PET/CT) 通过 PET/CT 测量活体生物体中铜通量的可行性。 64CuCl2-PET/CT 具有作为诊断遗传性和获得性人类铜代谢紊乱以及监测铜调节治疗效果的有用工具的潜力。
Copper is an essential nutrient for the physiology of live organisms, but excessive copper can be harmful. Copper radioisotopes are used for measurement of copper fluxes in live organisms using a radioactivity assay of body fluids or whole-body positron emission tomography (PET). Hybrid positron emission tomography–computed tomography (PET/CT) is a versatile tool for real-time measurement of copper fluxes combining the high sensitivity and quantification capability of PET and the superior spatial resolution of CT for anatomic localization of radioactive tracer activity. Kinetic analysis of copper metabolism in the liver and other extra-hepatic tissues of Atp7b−/− knockout mice, a mouse model of Wilson’s disease, demonstrated the feasibility of measuring copper fluxes in live organisms with PET/CT using copper-64 chloride (64CuCl2) as a radioactive tracer (64CuCl2-PET/CT). 64CuCl2-PET/CT holds potential as a useful tool for diagnosis of inherited and acquired human copper metabolism disorders, and for monitoring the effects of copper-modulating therapy.
DOI: 10.1007/s10534-004-1800-0
发表时间: 2005-02-01
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