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An in vivo usable chemiluminescence Probe carried by nanoparticles

机译:纳米粒子携带的体内可用化学发光探针

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摘要

Chemiluminescence analysis technique is an important method in biology and medicine. Because the reaction between chemiluminescence reagent and high-energy molecule is instantaneous and short-lived, the present chemiluminescence analysis methods have difficulty in living body. In this paper, a novel chemiluminescence probe was designed and used, which was made of human serum albumin and chemiluminescence reagent 2-Methyl-6- (ρ-methoxyphenyl) -3,7-dihydroimidazo [l,2-a]pyrazin-3-one (MCLA); It can be used to detect the distribution of super oxide anion and singlet oxygen in living body. Electron microscope observation indicated that the diameter of nanoparticles was about 50~150nm and the diameter among 50~80nm can come to 80%. The results in vitro and in vivo showed that the nanoparticles could release MCLA slowly. In vivo experiment, injected the Hematoporphyrin Derivative (HpD) and nanoparticles in the denuded site of mice, stimulated by visible light, then can see distinct luminesce at the injected site through detecting the two-dimensional image using a highly sensitive Intensified Charged-Coupled Device (ICCD) detector. The results of experiment proved that the time delay resulted from nanoparticles is obvious.
机译:化学发光分析技术是生物学和医学领域的重要方法。由于化学发光试剂与高能分子之间的反应是瞬时的且短暂的,因此目前的化学发光分析方法在生物体内存在困难。本文设计并使用了一种新型的化学发光探针,该探针由人血清白蛋白和化学发光试剂2-甲基-6-(对甲氧基苯基)-3,7-二氢咪唑并[1,2-a]吡嗪-3制成。一(MCLA);可用于检测生物体内超氧阴离子和单线态氧的分布。电子显微镜观察表明,纳米粒子的粒径约为50〜150nm,50〜80nm之间的粒径可达80%。体内外实验结果表明,纳米粒子可以缓慢释放MCLA。在体内实验中,将血卟啉衍生物(HpD)和纳米颗粒注射到小鼠的裸露部位,在可见光的刺激下,然后通过使用高灵敏度的增强型带电耦合装置检测二维图像,可以在注射部位看到明显的发光(ICCD)检测器。实验结果证明,纳米粒子引起的时延明显。

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