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夹心型锰杂多配合物作为磁共振成像造影剂的研究

李中峰1,2, 李伟生1,2, 廖沛球1,2, 魏来1,2, 李晓晶1, 景凤英1, 裴奉奎1, 王旭霞2,3, 雷皓3   

    1. 中国科学院长春应用化学研究所, 长春 130022;
    2. 中国科学院研究生院, 北京 100039;
    3. 中国科学院武汉数学与物理研究所波谱与原子分子物理国家重点实验室, 武汉 430071
  • 收稿日期:2007-05-10 修回日期:1900-01-01 出版日期:2007-11-10 发布日期:2007-11-10
  • 通讯作者: 裴奉奎

Study of Two Sandwich-type Manganese Polyoxometalates as Potential MRI Contrast Agents

LI Zhong-Feng1,2, LI Wei-Sheng1,2, LIAO Pei-Qiu1,2, WEI Lai1,2, LI Xiao-Jing1*, JING Feng-Ying1, PEI Feng-Kui1*, WANG Xu-Xia2,3, LEI Hao3   

    1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;
    3. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2007-05-10 Revised:1900-01-01 Online:2007-11-10 Published:2007-11-10
  • Contact: PEI Feng-Kui

摘要: 以两种夹心型锰杂多配合物K10[Mn4(PW9O34)2]·22H2O和Na16[Mn4(H2O)2(P2W15O56)2]·53H2O作为研究对象, 采用元素分析和红外光谱对其结构进行了表征, 测试其在水中、牛血清白蛋白及运铁蛋白溶液中的弛豫效率, 并进行了大鼠活体成像实验. 结果表明, 这两种锰杂多配合物的弛豫效率高于或接近于目前临床常用的造影剂Gd-DTPA, 对肝脏和肾脏MRI信号具有良好的增强效果, 是比较好的潜在磁共振成像造影剂候选化合物.

关键词: 夹心型锰杂多配合物, 磁共振成像, 造影剂, 弛豫效率

Abstract: Two sandwich-type manganese polyoxometalates, K10[Mn4(PW9O34)2]·22H2O and Na16[Mn4(H2O)2(P2W15O56)2]·53H2O, were synthesized and characterized by IR and elemental analysis. T1-relaxivities of the two compounds were higher than or similar to that of the commercial MRI contrast agent(Gd-DTPA), and relaxivities in BSA and hTf were also reported. T1-weighted MR imaging of rat kidney and liver showed a good enhancement post i.v. injection of the two manganese polyoxometalates. The results indicate the two sandwich-type manganese polyoxometalates being potential contrast agents for MRI.

Key words: Sandwich-type manganese polyoxometalates, Magnetic resonance imaging, Contrast agent, Relaxivity

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