高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (12): 2026.

• 研究简报 • 上一篇    下一篇

Gd(DTPA-BIN)与人血清白蛋白作用的核磁共振研究

李欣宇, 张善荣, 景凤英, 吴亦洁, 裴奉奎   

  1. 中国科学院长春应用化学研究所应用谱学开放实验室, 长春, 130022
  • 收稿日期:1997-11-27 出版日期:1998-12-24 发布日期:1998-12-24
  • 通讯作者: 裴奉奎.
  • 作者简介:李欣宇,女,25岁,博士研究生.
  • 基金资助:

    中国科学院"九五"预研基金(BH-23)资助课题.

NMR Studies of Gd(DTPA-BIN)in Human Serum Albumin Solution

LI Xin-Yu, ZHANG Shan-Rong, JING Feng-Ying, WU Yi-Jie, PEI Feng-Kui   

  1. The Key Laboratory of Applied Spectroscopy, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022
  • Received:1997-11-27 Online:1998-12-24 Published:1998-12-24

关键词: Gd(DTPA-BIN), 人血清白蛋白, 弛豫分析

Abstract: Stable gadolinium complexes, such as Gd(DTPA) and Gd(DOTA), are usually used as the contrast agents for magnetic resonance imaging(MRI). Reported here are the enhanced relaxation properties of a novel gadolinium complex, diethylene triaminopentaacetate bis(isoniazid) Gd(DTPA BIN), in aqueous and in human serum albumin(HSA) solution, which indicates that (1) two Gd(DTPA BIN) can integrate non covalently with one HSAwith an equilibrium constant of 0.02 mmol-2 ·L2; (2) the relaxivities are 3.28 and 4.92 mmol-1 ·L·s-1 for the free Gd(DTPA BIN) and the Gd(DTPA BIN)2 HSAconjugator, respectively; (3) the rotational correlation time of protein conjugator is notably higher than that of the free complex. The above results may imply that Gd(DTPA BIN) has a higher tissue selectivity than that of its parent Gd(DTPA).

Key words: Gd (DTPA-BIN), Human serum albumin, Relaxation analysis

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