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    • 5. 发明公开
    • 금 나노입자를 포함하는 CT 조영제
    • 含金纳米颗粒CT对比剂
    • KR1020080032479A
    • 2008-04-15
    • KR1020060098373
    • 2006-10-10
    • 애니젠 주식회사
    • 전상용김동규정용연김재일
    • A61K49/04A61K49/00B82Y5/00
    • A61K49/0428A61K47/32A61K47/36A61K49/0065B82Y5/00Y10S607/901
    • A gold nanoparticle-containing CT(computed tomography) contrast agent is provided to enhance the contrast with a relatively small amount, increase in vivo retention time of the agent by increasing the molecular weight, rapidly exhibit contrast performance, and improve specificity to the liver and spleen, so that the contrast agent is useful for diagnosis of liver cancer. A CT contrast agent contains gold nanoparticles having the size of 1-50nm, coated with a biocompatible polymer selected from polyethyleneglycol(PEG), dextran, polyvinylpyrrolidone, albumin, polyvinylalcohol, polyethyleneimine, chitosan, hyaluronic acid, polylacticglycolic acid(PLGA), polylactic acid, polyglycolic acid, polyamino acid, polyacetal, polyorthocarbonate, polycarbonate, polycarbolactone polyacrylic acid, polymetacrylic acid, polysaccharide, polyketal, polyether, polyamide, polymaleic anhydride, polymethylvinylether and copolymer thereof, and has 5-50 HU(hounsfield unit) in vitro based on 1 mg/ml.
    • 提供含金纳米颗粒的CT(计算机断层摄影)造影剂,以通过增加分子量,快速显示对比度性能和改善对肝脏的特异性,以相对少的量增加药物的体内保留时间,从而增强对比度 脾脏,使造影剂对肝癌的诊断有用。 CT造影剂含有尺寸为1-50nm的金纳米颗粒,涂覆有选自聚乙二醇(PEG),葡聚糖,聚乙烯吡咯烷酮,白蛋白,聚乙烯醇,聚乙烯亚胺,壳聚糖,透明质酸,聚乳酸(PLGA),聚乳酸 聚乙醇酸,聚氨基酸,聚缩醛,聚碳酸酯,聚碳酸酯,聚碳酸内酯聚丙烯酸,聚甲基丙烯酸,多糖,聚缩酮,聚醚,聚酰胺,聚马来酸酐,聚甲基乙烯基醚及其共聚物,体外基于 1毫克/毫升。
    • 6. 发明公开
    • 금 나노입자를 포함하는 CT 조영제
    • 含金纳米颗粒CT对比剂
    • KR1020080032627A
    • 2008-04-15
    • KR1020070139126
    • 2007-12-27
    • 애니젠 주식회사
    • 전상용김동규정용연김재일
    • A61K49/04A61K49/00B82Y5/00
    • A61K49/0428A61K47/32A61K47/36A61K49/0065B82Y5/00Y10S607/901
    • A gold nanoparticle-containing CT(computed tomography) contrast agent is provided to reduce the amount of use, increase the imaging time by inducing slow release due to its high molecular weight, and show contrast ability within a short time, so that the CT contrast agent is useful for diagnosis of liver cancer. A CT contrast agent contains gold nanoparticles of which surfaces are coated with a biocompatible polymer selected from polyvinylpyrrolidone, chitosan and hyaluronic acid, has 5-50 HU(hounsfield unit) value, preferably 20-30 HU value in vitro based on 1 mg/ml, and specificity to liver or spleen, and is accumulated in not the liver cancer tissue but the normal liver tissue, wherein the gold nanoparticle has the particle size of 1-500 nm; and the CT contrast agent shows at least two times higher HU value in the liver cancer tissue than that in the normal liver tissue after 10-90 minutes of in vivo administration.
    • 提供含金纳米颗粒的CT(计算机断层摄影)造影剂以减少使用量,由于其高分子量引起缓释,增加成像时间,并在短时间内显示对比度,从而使CT对比度 药物对肝癌的诊断有用。 CT造影剂含有金纳米颗粒,其表面涂覆有选自聚乙烯吡咯烷酮,壳聚糖和透明质酸的生物相容性聚合物,其体外含量为5-50 HU(hounsfield unit)值,优选为20-30 HU值,基于1mg / ml 对肝脏或脾脏具有特异性,并且积累在肝癌组织中,而不是肝脏正常肝组织,其中金纳米颗粒的粒径为1-500nm; 并且CT造影剂在体内给药10-90分钟后显示肝癌组织中HU值至少高于正常肝组织中的两倍。