MRI probes of membrane potential
    1.
    发明授权
    MRI probes of membrane potential 失效
    膜电位的MRI探针

    公开(公告)号:US07125965B2

    公开(公告)日:2006-10-24

    申请号:US10700712

    申请日:2003-11-03

    申请人: Angelique Louie

    发明人: Angelique Louie

    IPC分类号: C07F5/00 G01N24/08 A61B5/055

    摘要: The invention provides methods and compositions for molecular resonance imaging of membrane potential. The compositions comprise an indicator moiety attached through an optional linker to a macrocycle component that binds a lanthanide. The indicator moiety changes conformation in response to alterations in membrane potential and alters the interaction of the bound lanthanide with water. This alteration produces a detectable change in MRI signal , notably the T1 value. A preferred indicator moiety is spiropyran as it exhibits membrane-potential driven interconversions between the closed-ring spiropyran conformer and the extended merocyanine conformer. A preferred macrocycle is DO3A, known to bind gadolinium and an established MRI contrast agent. The methods of the invention comprise in vivo and in vitro uses of compositions of the invention to obtain MRI images that provide information about membrane potential.

    摘要翻译: 本发明提供膜电位分子共振成像的方法和组合物。 组合物包含通过任选的接头连接到结合镧系元素的大环组分的指示剂部分。 指示剂部分响应于膜电位的变化而改变构象,并改变结合的镧系元素与水的相互作用。 这种改变产生MRI信号中可检测的变化,特别是T 1 N值。 优选的指示剂部分是螺吡喃,因为它表现出闭环螺吡喃构象异构体与延伸的部花青同系异构体之间的膜电位驱动的相互转换。 已知的优选的大环是DO3A,已知结合钆和已建立的MRI造影剂。 本发明的方法包括体内和体外使用本发明的组合物以获得提供关于膜电位的信息的MRI图像。

    Agents for use in magnetic resonance and optical imaging
    2.
    发明申请
    Agents for use in magnetic resonance and optical imaging 审中-公开
    用于磁共振和光学成像的试剂

    公开(公告)号:US20050220714A1

    公开(公告)日:2005-10-06

    申请号:US11086530

    申请日:2005-03-21

    IPC分类号: A61K49/00 A61K49/18 H01L21/00

    摘要: Semiconductor nanoparticles are doped with paramagnetic ions to serve as dual-mode optical and magnetic resonance imaging (MRI) contrast agents. These nanoparticles can be constructed in smaller diameters than typical MRI agents. The dual-modality nature allows the particles to be used for in vivo imaging by MRI, and then followed by histology with optical imaging techniques.

    摘要翻译: 半导体纳米颗粒掺有顺磁离子,用作双模光学和磁共振成像(MRI)造影剂。 这些纳米颗粒可以构造成比典型的MRI剂更小的直径。 双重模式性质允许颗粒通过MRI用于体内成像,然后用光学成像技术进行组织学。