Maximizing the relaxivity of HSA-bound gadolinium complexes by simultaneous optimization of rotation and water exchange
作者:Stefano Avedano、Lorenzo Tei、Alberto Lombardi、Giovanni B. Giovenzana、Silvio Aime、Dario Longo、Mauro Botta
DOI:10.1039/b714438e
日期:——
Two new GdEGTA (EGTA = ethylene glycol-bis(2-aminoethylether)-N,N,N′,N′-tetraacetic acid) derivatives incorporating aromatic moieties into the oxoethylenic bridge have been prepared and characterised, their conjugates to HSA investigated and an unprecedented high relaxivity, close to that predicted by theory, interpreted in terms of the combined effect of restricted local rotation and fast rate of water exchange.
Synthesis and solution thermodynamic study of rigidified and functionalised EGTA derivatives
作者:Lorenzo Tei、Zsolt Baranyai、Mauro Botta、Laura Piscopo、Silvio Aime、Giovanni B. Giovenzana
DOI:10.1039/b804195d
日期:——
(ethyleneglycol-bis(2-aminoethylether)-N,N,N',N'-tetraaceticacid) derivatives incorporating aromatic and functionalized aromatic moieties into the oxoethylenic bridge is described. A solution thermodynamic study was carried out to determine the influence of structural modifications on the coordinating ability towards lanthanide and alkaline earth metalions. The presence of remote functional groups
Relaxometric Study of a Series of Monoaqua Gd
<sup>III</sup>
Complexes of Rigidified EGTA‐Like Chelators and Their Noncovalent Interaction with Human Serum Albumin
close to optimal. The lipophiliccomplexes [GdL4]– and [GdL5]– form micellar aggregates whose NMRD profiles were measured and analyzed in terms of a model that allows separation of global motion and local rotation. The noncovalent binding interaction of the complexes to humanserumalbumin and the relaxivity of the macromolecular conjugates were investigated with relaxometric techniques at 20 MHz and