摘要:
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.
摘要翻译: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。
摘要:
The present invention relates to a CT contrast agent for detecting blood clot containing a fibrin target peptide sequence conjugated glycol chitosan-gold nanoparticle. The a CT contrast agent for detecting blood clot enables users to rapidly and repeatedly obtain CT image information of the size and the location of the blood clot in cardio-cerebrovascular thrombosis, and to monitor images of cerebral thrombosis.
摘要:
PURPOSE: An HA-PEG-gold CT image contrast technique is provided to enhance residense time and absorption with low toxicity. CONSTITUTION: An HA-PEG-gold CT image contrast medium is used for enhancing residense time and absorption. The CT image contrast medium contains HA-PEG-gold nanoparticles. A method for preparing the nanoparticels comprises a step of synthesizing gold nanoparticles; and a step of binding the gold nanoparticles with a ligand having thiolated hyaluronic acid and polyethylene.
摘要:
A contrast agent is provided to be harmless to people and to obtain an increased stay time within a body and an excellent X-ray contrast effect. A contrast agent comprises a methoxy polyethylene glycol sulfo-gold nanoparticle colloid composite represented by the following formula 2. The contrast agent is produced by reacting methoxy polyethylene glycol sulfhydryl represented by the formula 1 of CH3-(OCH2CH2)n-SH with gold nanoparticle colloid. In the formula 2, PEG is polyethylene glycol. The methoxy polyethylene glycol sulfo-gold nanoparticle colloid composite has a particle size of 30-50 micron. The gold nanoparticle colloid is prepared by reducing Au(3+) into Au(0).
摘要:
본 발명은 표적 지향성 펩타이드를 포함하는 재조합 자기조립성 단백질 및 그의 용도에 관한 것이다. 본 발명에 따른 표적 지향성 펩타이드를 포함하는 재조합 자기조립성 단백질은 추가적인 표적 지향성 부여 과정을 필요로 하지 않기 때문에 화학적 결합제 또는 안정화제 등의 보조제를 사용하지 않고도 원하는 약물을 표적 조직 또는 표적 세포로 전달하는 것이 가능하며, 이로써 광열 치료, 약물 전달 또는 이미징 등에 사용가능하다. 특히, 본 발명에 따르면 추가적인 표면 안정화 과정이나 표적 지향성 부여 과정 없이도, 표적 지향성을 가지면서 균일한 고밀도의 금 나노입자가 단백질 표면에 결합되어 있는 금-단백질 나노입자 융합체를 제작할 수 있다. 본 발명에 따른 금-단백질 나노입자 융합체는 기존의 금 나노입자에 비하여 pH의 변화 및 농도의 변화에 구조적 안정성을 보이며 표적 지향성 또한 우수하므로, 금 나노입자의 광열 치료 요법에 있어서 획기적인 활용도의 증진을 가져다 줄 수 있다.
摘要:
하나 이상의 쯔비터이온성 잔기로 관능화된 나노입자(10) 및 이 나노입자를 포함하는 조성물이 제공된다. 나노입자(10)는 다른 나노입자에 비하여 체내에 입자가 최소한으로 보유되는 특징을 갖는다. 나노입자(10)는 본질적으로 실리카가 없는 코어 표면(30)을 갖는 코어(20), 및 코어 표면(30)에 부착된 쉘(40)을 포함한다. 쉘(40)은 하나 이상의 실란-관능화된 쯔비터이온성 잔기를 포함한다. 또한, 상기 나노입자의 제조 방법 및 그를 진단제로서 사용하는 방법이 제공된다.
摘要:
PURPOSE: An MR/CT bimodal contrast agent is provided to ensure high magnetic relaxation proportion, excellent contrast enhancement effect, and ling image acquisition time. CONSTITUTION: A diethylenetriamine pentaacetic acid derivative forms a complex through the bond with metal and is represented by chemical formula 1. A method for preparing an MR/CT bimodal contrast agent comprises the steps of: reacting a diethylenediamine pentacetic acid derivative, an mercapto group-containing amino acid, their derivatives or a mercapto group and amino group-containing aromatic compound to prepare a ligand; reacting the ligand with metal oxide to form a metal complex; and reacting the metal complex with gold nanoparticles to prepare gold nanoparticles coated with the complex.