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    • 7. 发明授权
    • Contrast enhancement agents and method of use thereof
    • 对比增强剂及其使用方法
    • US09155804B2
    • 2015-10-13
    • US13626942
    • 2012-09-26
    • General Electric Company
    • Brian James GrimmondMichael James RishelJeannette Christine Roberts
    • A61K51/00A61M36/14A61K49/12
    • A61K49/126
    • A contrast agent composition and a method of diagnostic imaging are provided. The composition comprises a pharmaceutically acceptable carrier and a metal-complex comprising a ligand having structure (XXX): wherein R1, R2, R3, R7, R8, R′1, R′2, R′3, R7′ and R8′ are selected form hydrogen, a protected C1-C3 hydroxyalkyl group, or a C1-C3 alkyl group; R4, R′4 are selected from a hydrogen, a hydroxyl, a protected hydroxyl group, a protected C1-C3 hydroxyalkyl group, a C1-C3 alkyl group; n is an integer between 0 and 4; R5, R′5 are selected from a hydrogen, a protecting group comprising C1-C30 aliphatic radicals, C3-C30 cycloaliphatic radicals, C2-C30 aromatic radicals, m is an integer between 1 and 10; at least one of R7 and R′7 is acidic groups or protected acidic groups; Y comprises a protein or peptide moiety, a particle, a micelle, a liposome, an organic molecule, oligomer, polymer or a hydrophilic moiety.
    • 提供造影剂组合物和诊断成像方法。 该组合物包含药学上可接受的载体和包含具有结构(XXX)的配体的金属络合物:其中R1,R2,R3,R7,R8,R'1,R'2,R'3,R7'和R8'是 选自氢,受保护的C1-C3羟烷基或C1-C3烷基; R 4,R'4选自氢,羟基,被保护的羟基,保护的C 1 -C 3羟烷基,C 1 -C 3烷基; n是0和4之间的整数; R5,R'5选自氢,包含C1-C30脂族基团,C3-C30脂环族基团,C2-C30芳族基团的保护基,m是1-10之间的整数; R 7和R 7中的至少一个是酸性基团或被保护的酸性基团; Y包括蛋白质或肽部分,颗粒,胶束,脂质体,有机分子,低聚物,聚合物或亲水部分。
    • 10. 发明申请
    • HIGH-SENSITIVITY MAGNETIC RESONANCE IMAGING NANO-CONTRAST AGENT BASED ON AN ANIONIC POLYMER AND CATIONIC POLYMER ION COMPLEX, AND A PRODUCTION METHOD THEREFOR
    • 基于阴离子聚合物和阳离子聚合物复合物的高灵敏度磁共振成像纳米对比剂及其制备方法
    • US20140170077A1
    • 2014-06-19
    • US14110138
    • 2011-04-07
    • Moon-Hee SungYong Taik LimYoung-Woock NohIl Han LeeHyun Min Kim
    • Moon-Hee SungYong Taik LimYoung-Woock NohIl Han LeeHyun Min Kim
    • A61K49/12
    • A61K49/126A61K49/1863A61K49/1872
    • The present invention relates to a nano-composite containing anionic and cationic polymers and a method for preparing thereof, and more particularly to a poly-gamma-glutamic acid (γ-PGA)/chitosan/manganese iron oxide nanoparticle composite prepared by encapsulating iron oxide-based nanoparticles in a γ-PGA/chitosan polymer composite using the ionic self-assembly properties of poly-gamma-glutamic acid (γ-PGA) and chitosan, which are biocompatible polymer materials, and to a method for preparing thereof.The present invention provides a magnetic resonance imaging nano-contrast agent based on a nanoparticle composite including iron oxide-based nanoparticles encapsulated in a self-assembled composite of anionic poly-gamma-glutamic acid (γPGA) and cationic chitosan. The iron oxide-based nanoparticles encapsulated in the composite interact with each other to produce a synergistic effect on the amplification of magnetic resonance signals, and thus have an relatively excellent contrast effect compared to when they exist as single particles.
    • 本发明涉及含有阴离子和阳离子聚合物的纳米复合物及其制备方法,更具体地涉及通过包封氧化铁制备的聚-γ-谷氨酸(γ-PGA)/壳聚糖/锰铁氧体纳米颗粒复合材料 基于聚-γ-谷氨酸(γ-PGA)和壳聚糖的离子自组装性质的γ-PGA /壳聚糖复合材料的生物相容性聚合物材料的制备方法。 本发明提供一种基于纳米颗粒复合材料的磁共振成像纳米造影剂,其包括封装在阴离子聚-γ-谷氨酸(γPGA)和阳离子壳聚糖的自组装复合物中的基于氧化铁的纳米颗粒。 封装在复合材料中的基于氧化铁的纳米颗粒彼此相互作用以对磁共振信号的扩增产生协同效应,因此与作为单个颗粒存在时相比具有相对优异的对比效果。