The current invention provides metal ion complexes with an organic ligand, compositions comprising such complexes. In particular, these complexes are capable of reacting with a reactive oxygen species in a subject and increase their T
1
-weighted relaxivities so a clinical MRI scanner can detect an oxidative stress hotspot in the subject. The disclosed complexes also exhibit excellent anti-oxidant properties and low cell toxicity, therefore can be used as a therapeutic agent to relieve oxidative stress in the subject, or as both a MRI contrast agent and therapeutic agent in a composition.
本发明提供了具有有机
配体的
金属离子配合物及包含此类配合物的组合物。特别地,这些配合物能够与主体中的活性氧物种发生反应,并增加它们的T1加权弛豫度,以便临床MRI扫描仪可以检测到主体中的氧化应激热点。所披露的配合物还表现出优异的抗氧化性和低细胞毒性,因此可用作缓解主体中氧化应激的治疗剂,或作为组合物中的MRI对比剂和治疗剂。