METHOD TO ENHANCE TISSUE ACCUMULATION OF RADIOLABELED COMPOUNDS
    3.
    发明公开
    METHOD TO ENHANCE TISSUE ACCUMULATION OF RADIOLABELED COMPOUNDS 有权
    一种改善的放射性化合物在组织的积累

    公开(公告)号:EP0961591A1

    公开(公告)日:1999-12-08

    申请号:EP98966733.0

    申请日:1998-11-23

    IPC分类号: A61B19 A61K51

    CPC分类号: A61K51/121

    摘要: Administration of a radioisotopic compound by infusion over a period of time greater than two hours, preferably greater than twelve hours, greatly increases the maximum radioactivity that accumulates in the target cell. The efficacy of the administration of the radiolabeled compound can be increased about five times higher than prior bolus injection or short infusion methods. This method enhances the tumor to background ratio by increasing the actual radioligand accumulated inside the tumor cells. This technique works for any radiolabeled compound whose cellular uptake is limited by a cellular process of either binding to a cellular receptor or to a transport protein. Once the radiolabeled compound is bound and internalized, the ability of an unlabeled compound to compete with the radioligand is markedly decreased. The primary factor governing residence time after internalization is the physical half-life of the radioisotope, not biologic half-life.

    METHOD TO ENHANCE TISSUE ACCUMULATION OF RADIOLABELED COMPOUNDS
    4.
    发明授权
    METHOD TO ENHANCE TISSUE ACCUMULATION OF RADIOLABELED COMPOUNDS 有权
    一种改善的放射性化合物在组织的积累

    公开(公告)号:EP0961591B1

    公开(公告)日:2008-05-14

    申请号:EP98966733.2

    申请日:1998-11-23

    IPC分类号: A61B19/00 A61K51/12 A61P35/00

    CPC分类号: A61K51/121

    摘要: Administration of a radioisotopic compound by infusion over a period of time greater than two hours, preferably greater than twelve hours, greatly increases the maximum radioactivity that accumulates in the target cell. The efficacy of the administration of the radiolabeled compound can be increased about five times higher than prior bolus injection or short infusion methods. This method enhances the tumor to background ratio by increasing the actual radioligand accumulated inside the tumor cells. This technique works for any radiolabeled compound whose cellular uptake is limited by a cellular process of either binding to a cellular receptor or to a transport protein. Once the radiolabeled compound is bound and internalized, the ability of an unlabeled compound to compete with the radioligand is markedly decreased. The primary factor governing residence time after internalization is the physical half-life of the radioisotope, not biologic half-life.