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.
我们制备并表征了两种新的 GdEGTA(EGTA = 乙二醇-双(2-氨基乙基醚)-N,N,N′,N′-四乙酸)衍生物,它们在氧代乙烯桥中加入了芳香分子,并对它们与 HSA 的共轭物进行了研究,发现它们具有前所未有的高弛豫性,接近理论预测的弛豫性。