The present invention relates to paramagnetic solid lipid nanoparticles (pSLNs) comprising an amphiphilic paramagnetic metal chelating moiety selected from: a diazepine derivative of Formula I and a tetraazocyclododecane derivative of Formula (II): being said chelating moiety complexed to a paramagnetic metal ion selected from the group consisting of: Gd(III), Mn(II), Cr(III), Cu(II), Fe(III), Pr(III), Nd(III), Sm(III), Tb(III), Yb(III), Dy(III), Ho(III) and Er(III), or salts thereof. The invention further relates to the process for preparation of said solid lipid nanoparticles comprising amphiphilic complexes of paramagnetic metals (pSLNs) and to the use of pSLNs as MRI contrast agents in the diagnostic field.
本发明涉及一种含有两种不同的疏
水性和亲
水性结构的配合物的顺磁性固体脂质纳米粒子(pSLNs),所述配合物分别为式I的二氮杂环衍
生物和式II的四
氮杂环十二烷衍
生物,所述螯合
配体与从Gd(III)、Mn(II)、Cr(III)、Cu(II)、Fe(III)、Pr(III)、Nd(III)、Sm(III)、Tb(III)、Yb(III)、Dy(III)、Ho(III)和Er(III)中选择的顺磁性
金属离子或其盐络合形成。本发明还涉及制备含有顺磁性
金属的两种不同的疏
水性和亲
水性结构的配合物的固体脂质纳米粒子(pSLNs)的方法,以及将pSLNs用作诊断领域的MRI对比剂的用途。