实验动物与比较医学 ›› 2014, Vol. 34 ›› Issue (3): 219-222.DOI: 10.3969/j.issn.1674-5817.2014.03.010

• 论著 • 上一篇    下一篇

水溶性四氧化三铁纳米粒子制备及其在大鼠体内分布

赵文1, 张婀娜1, 赵强2   

  1. 1.中国医科大学实验动物部, 沈阳110001;
    2.南开大学生命科学学院, 天津300071
  • 收稿日期:2013-11-01 出版日期:2014-06-25 发布日期:2014-06-25
  • 作者简介:赵 文(1981-), 男, 助理实验师, 研究方向: 转基因 动物, E-mail: 419930901@qq.com

Preparation of Magnetic Iron Oxide Nanoparticles and Their Distribution in Rat

ZHAO Wen1, ZHANG A-na, ZHAO Qiang2   

  1. 1. Laboratory Animal Center, China Medical University, Shenyang 110001, China;
    2. The College of Life Sciences, Nankai University, Tianjin 300071, China
  • Received:2013-11-01 Online:2014-06-25 Published:2014-06-25

摘要: 目的 制备水溶性四氧化三铁纳米粒子并研究其在动物体内的分布。方法 采用高温分解法制备有机相Fe3O4磁性纳米粒子,然后采用2,3-二巯基丁二酸(DMSA)对磁性纳米晶体进行表面修饰,得到水溶性氧化铁纳米颗粒(Water-Soluble Iron Oxide Nanparticles,WION),将WION通过尾静脉注射入SD大鼠体内,在不同时间处死大鼠,组织切片染色观察WION在大鼠体内的分布,对WION的生物相容性做初步探讨。结果 透射电子显微镜观察发现,晶体的表面通过疏水长链烷烃稳定,Fe3O4纳米晶体在环己烷中具有较好的分散性,颗粒并无聚集现象; 尾静脉注射0.5 ml的WION溶液(1 mg/ml)24 h后,WION主要集中在脾脏和肝脏,其次是肾脏和肺。结论 采用高温分解法成功制备了Fe3O4磁性纳米粒子,其具有良好的表面形貌。进一步采用2,3-二巯基丁二酸(DMSA)对其进行表面修饰,获得了分散性良好的水溶性氧化铁纳米颗粒(WION)。

关键词: 磁性氧化铁, 水溶性氧化铁纳米颗粒(WION), 透射电子显微镜

Abstract: Objective To research the preparation of magnetic iron oxide nanoparticles and their distribution in the SD rat. Methods A organic phase process is used for making high-quality monodisperse hydrophobic Fe3O4 nanocrystals through the high temperature decomposition of Fe(acac)3 and a long-chain alcohol in autoclave reactor. Then water-soluble iron oxide nanoparticles (WION) were prepared by mixing with a bipolar surfactant,2,3 dimercaptosuccinic acid (DMSA). Results The nanoparticles with mean sizes 10 nm are Fe3O4 nanocrystal. 24 h after tail vein injection of WION 0.5 ml(1mg/ml solution), the WION mainly concentrated in the spleen and liver, kidneys and lungs followed. Conclusion Successfully prepared Fe3O4 nanoparticles through pyrolysis, and it has good surface morphology. Further modificated its surface by DMSA, can obtained a good dispersion of the WION.

Key words: Fe3O4, Water-soluble iron oxide nanoparticles (WION), Transmission electron microscope

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