Hydrated biodegradable superparamagnetic metal oxides
    3.
    发明授权
    Hydrated biodegradable superparamagnetic metal oxides 失效
    水合生物降解超顺磁金属氧化物

    公开(公告)号:US5219554A

    公开(公告)日:1993-06-15

    申请号:US863360

    申请日:1992-03-31

    摘要: This invention relates to materials exhibiting certain magnetic and biological properties which make them uniquely suitable for use as magnetic resonance imaging (MRI) agents to enhance MR images of animal organs and tissues. More particularly, the invention relates to the in vivo use of biologically degradable and metabolizable superparamagnetic metal oxides as MR contrast agents. Depending on their preparation, these metal oxides are in the form of superparamagnetic particle dispersoids or superparamagnetic fluids where the suspending medium is a physiologically-acceptable carrier, and may be uncoated or surrounded by a polymeric coating to which biological molecules can be attached. These materials are administered to animals, including humans, by a variety of routes and the metal oxides therein collect in specific target organs to be imaged; in the case of coated particles, the biological molecules can be chosen to target specific organs or tissues. The biodistribution of the metal oxides in target organs or tissues results in a more detailed image of such organs or tissues because the metal oxides, due to their superparamagnetic properties, exert profound effects on the hydrogen nuclei responsible for the MR image. In addition, the dispersoids and fluids are quite stable and, in the case of the fluids, can even be subjected to autoclaving without impairing their utility. Furthermore, the materials are biodegradable and, in the case of iron oxide compounds, can eventually be incorporated into the subject's hemoglobin, making them useful in treating anemia. Thus, the materials are well-suited for in vivo use.

    摘要翻译: 本发明涉及具有某些磁性和生物学特性的材料,使得它们独特地适用于磁共振成像(MRI)试剂以增强动物器官和组织的MR图像。 更具体地,本发明涉及生物可降解和代谢的超顺磁性金属氧化物作为MR造影剂的体内应用。 取决于它们的制备,这些金属氧化物是超顺磁性颗粒分散体或超顺磁性流体的形式,其中悬浮介质是生理上可接受的载体,并且可以是未涂覆的或被可附着生物分子的聚合物涂层包围。 这些材料通过各种途径施用于包括人在内的动物,并且其中的金属氧化物收集在要成像的特定靶器官中; 在涂覆颗粒的情况下,可以选择生物分子来靶向特定的器官或组织。 金属氧化物在靶器官或组织中的生物分布导致这种器官或组织的更详细的图像,因为金属氧化物由于其超顺磁性质对负责MR图像的氢原子发挥深远的作用。 此外,分散体和流体是相当稳定的,并且在流体的情况下,甚至可以进行高压灭菌而不损害它们的效用。 此外,材料是可生物降解的,并且在氧化铁化合物的情况下,最终可以并入受试者的血红蛋白中,使其可用于治疗贫血。 因此,这些材料非常适合于体内使用。

    Biologically degradable superparamagnetic materials for use in clinical
applications
    4.
    发明授权
    Biologically degradable superparamagnetic materials for use in clinical applications 失效
    用于临床应用的生物可降解超顺磁材料

    公开(公告)号:US4827945A

    公开(公告)日:1989-05-09

    申请号:US67586

    申请日:1987-06-26

    摘要: This invention relates to materials exhibiting certain magnetic and biological properties which make them uniquely suitable for use as magnetic resonance imaging (MRI) agents to enhance MR images of animal organs and tissues. More particularly, the invention relates to the in vivo use of biologically degradable and metabolizable superparamagnetic metal oxides as MR contrast agents. Depending on their preparation, these metal oxides are in the form of superparamagnetic particle dispersoids or superparamagnetic fluids where the suspending medium is a physiologically-acceptable carrier, and may be uncoated or surrounded by a polymeric coating to which biological molecules can be attached. These materials are administered to animals, including humans, by a variety of routes and the metal oxides therein collect in specific target organs to be imaged; in the case of coated particles, the biological molecules can be chosen to target specific organs or tissues. The biodistribution of the metal oxides in target organs or tissues results in a more detailed image of such organs or tissues because the metal oxides, due to their superparamagnetic properties, exert profound effects on the hydrogen nuclei responsible for the MR image. In addition, the dispersoids and fluids are quite stable and, in the case of the fluids, can even be subjected to autoclaving without impairing their utility. Furthermore, the materials are biodegradable and, in the case of iron oxide compounds, can eventually be incorporated into the subject's hemoglobin, making them useful in treating anemia. Thus, the materials are well-suited for in vivo use.

    摘要翻译: 本发明涉及具有某些磁性和生物学特性的材料,使得它们独特地适用于磁共振成像(MRI)试剂以增强动物器官和组织的MR图像。 更具体地,本发明涉及生物可降解和代谢的超顺磁性金属氧化物作为MR造影剂的体内应用。 取决于它们的制备,这些金属氧化物是超顺磁性颗粒分散体或超顺磁性流体的形式,其中悬浮介质是生理上可接受的载体,并且可以是未涂覆的或被可附着生物分子的聚合物涂层包围。 这些材料通过各种途径施用于包括人在内的动物,并且其中的金属氧化物收集在要成像的特定靶器官中; 在涂覆颗粒的情况下,可以选择生物分子来靶向特定的器官或组织。 金属氧化物在靶器官或组织中的生物分布导致这种器官或组织的更详细的图像,因为金属氧化物由于其超顺磁性质对负责MR图像的氢原子发挥深远的作用。 此外,分散体和流体是相当稳定的,并且在流体的情况下,甚至可以进行高压灭菌而不损害它们的效用。 此外,材料是可生物降解的,并且在氧化铁化合物的情况下,最终可以并入受试者的血红蛋白中,使其可用于治疗贫血。 因此,这些材料非常适合于体内使用。

    Vascular magnetic resonance imaging agent comprising nanoparticles
    5.
    发明授权
    Vascular magnetic resonance imaging agent comprising nanoparticles 失效
    包含纳米颗粒的血管磁共振成像剂

    公开(公告)号:US5314679A

    公开(公告)日:1994-05-24

    申请号:US995111

    申请日:1992-12-22

    摘要: The preparation and isolation of biodegradable superparamagnetic MR imaging contrast agents for the vascular compartment is described. These aggregates are comprised of individual biodegradable superparamagnetic metal oxide crystals which aggregates have an overall mean diameter less than about 4000 angstroms. The preferred vascular imaging contrast agent is comprised of aggregates of iron oxide crystals having an overall mean diameter less than about 500 angstroms. These contrast agents may be associated with a macromolecular species, which assist, among other things, in the preparation of these extremely small materials, and may be dispersed or dissolved in a physiologically acceptable medium. Preferred media also stabilize the materials against further aggregation even under harsh sterilization conditions. The autoclaved biodegradable superparamagnetic iron oxides of the invention are ideally suited for a pharmaceutical preparation and enjoy several advantages over prior intravascular imaging contrast media including low osmolality, low effective dose requirements, high relaxivities, long blood lifetimes, rapid biodegradability, and versatility with respect to a wide range of applicable MR data acquisition parameters.

    摘要翻译: 描述了用于血管隔室的可生物降解的超顺磁性MR成像造影剂的制备和分离。 这些聚集体由单个可生物降解的超顺磁金属氧化物晶体组成,其聚集体具有小于约4000埃的总平均直径。 优选的血管成像造影剂由总平均直径小于约500埃的氧化铁晶体的聚集体组成。 这些造影剂可以与大分子物质相关联,其特别有助于制备这些极小物质,并且可以分散或溶解在生理上可接受的介质中。 优选的介质甚至在恶劣的灭菌条件下也稳定材料以防止进一步聚集。 本发明的高压消毒的可生物降解的超顺磁铁氧化物理想地适用于药物制剂,并且比先前的血管内成像造影剂具有若干优点,包括低渗透压浓度,低有效剂量要求,高松弛度,长血液寿命,快速生物降解性和相对于 广泛的适用MR数据采集参数。

    Silanized biodegradable super paramagnetic metal oxides as contrast
agents for imaging the gastrointestinal tract
    6.
    发明授权
    Silanized biodegradable super paramagnetic metal oxides as contrast agents for imaging the gastrointestinal tract 失效
    硅烷化生物降解超顺磁性金属氧化物作为成像胃肠道的造影剂

    公开(公告)号:US5069216A

    公开(公告)日:1991-12-03

    申请号:US409384

    申请日:1989-09-19

    摘要: This invention relates to materials exhibiting certain magnetic and biological properties which make them uniquely suitable for use as magnetic resonance imaging (MRI) agents to enhance MR images of animal organs and tissues. More particularly, the invention relates to the in vivo use of biologically degradable and metabolizable superparamagnetic metal oxides as MR contrast agents. Depending on their preparation, these metal oxides are in the form of superparamagnetic particle dispersoids or superparamagnetic fluids where the suspending medium is a physiologically-acceptable carrier, and may be uncoated or surrounded by a polymeric coating to which biological molecules can be attached. These materials are administered to animals, including humans, by a variety of routes and the metal oxides therein collect in specific target organs to be imaged; in the case of coated particles, the biological molecules can be chosen to target specific organs or tissues. The biodistribution of the metal oxides in target organs or tissues results in a more detailed image of such organs or tissues because the metal oxides, due to their superparamagnetic properties, exert profound effects on the hydrogen nuclei responsible for the MR image. In addition, the dispersoids and fluids are quite stable and, in the case of the fluids, can even be subjected to autoclaving without impairing their utility. Furthermore, the materials are biodegradable and, in the case of iron oxide compounds, can eventually be incorporated into the subject's hemoglobin, making them useful in treating anemia. Thus, the materials are well-suited for in vivo use.

    摘要翻译: 本发明涉及具有某些磁性和生物学特性的材料,使得它们独特地适用于磁共振成像(MRI)试剂以增强动物器官和组织的MR图像。 更具体地,本发明涉及生物可降解和代谢的超顺磁性金属氧化物作为MR造影剂的体内应用。 取决于它们的制备,这些金属氧化物是超顺磁性颗粒分散体或超顺磁性流体的形式,其中悬浮介质是生理上可接受的载体,并且可以是未涂覆的或被可附着生物分子的聚合物涂层包围。 这些材料通过各种途径施用于包括人在内的动物,并且其中的金属氧化物收集在要成像的特定靶器官中; 在涂覆颗粒的情况下,可以选择生物分子来靶向特定的器官或组织。 金属氧化物在靶器官或组织中的生物分布导致这种器官或组织的更详细的图像,因为金属氧化物由于其超顺磁性质对负责MR图像的氢原子发挥深远的作用。 此外,分散体和流体是相当稳定的,并且在流体的情况下,甚至可以进行高压灭菌而不损害它们的效用。 此外,材料是可生物降解的,并且在氧化铁化合物的情况下,最终可以并入受试者的血红蛋白中,使其可用于治疗贫血。 因此,这些材料非常适合于体内使用。

    Vascular magnetic imaging method and agent comprising biodegradeable
superparamagnetic metal oxides
    7.
    发明授权
    Vascular magnetic imaging method and agent comprising biodegradeable superparamagnetic metal oxides 失效
    包含生物可降解超顺磁性金属氧化物的血管成像方法和药剂

    公开(公告)号:US5055288A

    公开(公告)日:1991-10-08

    申请号:US233177

    申请日:1988-08-16

    摘要: The preparation and isolation of biodegradable superparamagnetic MR imaging contrast agents for the vascular compartment is described. These aggregates are comprised of individual biodegradable superparamagnetic metal oxide crystals which aggregates have an overall mean diameter less than about 4000 angstroms. The preferred vascular imaging contrast agent is comprised of aggregates of iron oxide crystals having an overall mean diameter less than about 500 angstroms. These contrast agents may be associated with a macromolecular species, which assist, among other things, in the preparation of these extremely small materials, and may be dispersed or dissolved in a physiologically acceptable medium. Preferred media also stabilize the materials against further aggregation even under harsh sterilization conditions. The autoclaved biodegradable superparamagnetic iron oxides of the invention are ideally suited for a pharmaceutical preparation and enjoy several advantages over prior intravascular imaging contrast media including low osmolality, low effective dose requirements, high relaxivities, long blood lifetimes, rapid biodegradability, and versatility with respect to a wide range of applicable MR data acquisition parameters.

    摘要翻译: 描述了用于血管隔室的可生物降解的超顺磁性MR成像造影剂的制备和分离。 这些聚集体由单个可生物降解的超顺磁金属氧化物晶体组成,其聚集体具有小于约4000埃的总平均直径。 优选的血管成像造影剂由总平均直径小于约500埃的氧化铁晶体的聚集体组成。 这些造影剂可以与大分子物质相关联,其特别有助于制备这些极小物质,并且可以分散或溶解在生理上可接受的介质中。 优选的介质甚至在恶劣的灭菌条件下也稳定材料以防止进一步聚集。 本发明的高压消毒的可生物降解的超顺磁铁氧化物理想地适用于药物制剂,并且比先前的血管内成像造影剂具有若干优点,包括低渗透压浓度,低有效剂量要求,高松弛度,长血液寿命,快速生物降解性以及相对于 广泛的适用MR数据采集参数。

    Biodegradable superparamagnetic metal oxides as contrast agents for MR
imaging
    8.
    发明授权
    Biodegradable superparamagnetic metal oxides as contrast agents for MR imaging 失效
    可生物降解的超顺磁金属氧化物作为MR成像的造影剂

    公开(公告)号:US4951675A

    公开(公告)日:1990-08-28

    申请号:US244432

    申请日:1988-09-14

    摘要: This invention relates to materials exhibiting certain magnetic and biological properties which make them uniquely suitable for use as magnetic resonance imaging (MRI) agents to enhance MR images of animal organs and tissues. More particularly, the invention relates to the in vivo use of biologically degradable and metabolizable superparamagnetic metal oxides as MR contrast agents. Depending on their preparation, these metal oxides are in the form of superparamagnetic particle dispersoids or superparamagnetic fluids where the suspending medium is a physiologically-acceptable carrier, and may be uncoated or surrounded by a polymeric coating to which biological molecules can be attached. These materials are administered to animals, including humans, by a variety of routes and the metal oxides therein collect in specific target organs to be imaged; in the case of coated particles, the biological molecules can be chosen to target specific organs or tissues. The biodistribution of the metal oxides in target organs or tissues results in a more detailed image of such organs or tissues because the metal oxides, due to their superparamagnetic properties, exert profound effects on the hydrogen nuclei responsible for the MR image. In addition, the dispersoids and fluids are quite stable and, in the case of the fluids, can even be subjected to autoclaving without impairing their utility. Furthermore, the materials are biodegradable and, in the case of iron oxide compounds, can eventually be incorporated into the subject's hemoglobin, making them useful in treating anemia. Thus, the materials are well-suited for in vivo use.

    摘要翻译: 本发明涉及具有某些磁性和生物学特性的材料,使得它们独特地适用于磁共振成像(MRI)试剂以增强动物器官和组织的MR图像。 更具体地,本发明涉及生物可降解和代谢的超顺磁性金属氧化物作为MR造影剂的体内应用。 取决于它们的制备,这些金属氧化物是超顺磁性颗粒分散体或超顺磁性流体的形式,其中悬浮介质是生理上可接受的载体,并且可以是未涂覆的或被可附着生物分子的聚合物涂层包围。 这些材料通过各种途径施用于包括人在内的动物,并且其中的金属氧化物收集在要成像的特定靶器官中; 在涂覆颗粒的情况下,可以选择生物分子来靶向特定的器官或组织。 金属氧化物在靶器官或组织中的生物分布导致这种器官或组织的更详细的图像,因为金属氧化物由于其超顺磁性质对负责MR图像的氢原子发挥深远的作用。 此外,分散体和流体是相当稳定的,并且在流体的情况下,甚至可以进行高压灭菌而不损害它们的效用。 此外,材料是可生物降解的,并且在氧化铁化合物的情况下,最终可以并入受试者的血红蛋白中,使其可用于治疗贫血。 因此,这些材料非常适合于体内使用。

    Polyol and polyether iron oxide complexes as pharmacological and/or MRI contrast agents
    10.
    发明授权
    Polyol and polyether iron oxide complexes as pharmacological and/or MRI contrast agents 有权
    多元醇和聚醚氧化铁络合物作为药理学和/或MRI造影剂

    公开(公告)号:US07871597B2

    公开(公告)日:2011-01-18

    申请号:US10410527

    申请日:2003-04-09

    摘要: Pharmacological compositions, and methods for administration, of the type employing an iron oxide complex with a polyol or polyether. The methods of administration may comprise parenteral administration of an effective dose of the complex formulated in a biocompatible liquid delivered at a rate of from about 1 mL/sec to less than 1 mL/min and wherein upon administration the complex provides minimal detectable free iron in a subject, and minimal incidence of anaphylaxis. The pharmacological compositions are of the type employing a polyol or polyether iron oxide complex, which, upon parenteral administration to a subject, are substantially immunosilent, provide minimal anaphylaxis and minimal free iron, and undergo minimal dissolution in vivo.

    摘要翻译: 使用氧化铁配合物与多元醇或聚醚的类型的药物组合物和给药方法。 给药方法可以包括肠胃外给药配制在以约1mL / sec至小于1mL / min的速率递送的生物相容性液体中的复合物,并且其中在给药时,复合物提供了最小可检测的游离铁 一个主题和最小的过敏反应发生率。 药物组合物是使用多元醇或聚醚氧化铁络合物的类型,其在对受试者的肠胃外给药时基本上是免疫安全的,提供最小的过敏反应和最小的游离铁,并且在体内经历最小的溶解。