Article (Scientific journals)
Lanthanide(III) complexes of bis(phosphonate) monoamide analogues of DOTA: Bone-seeking agents for imaging and therapy
Vitha, T.; Kubicek, V.; Hermann, P. et al.
2008In Journal of Medicinal Chemistry, 51 (3), p. 677-683
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Abstract :
[en] Lanthanide complexes of DOTA derivatives 2a (BPAMD) and 2b (BPAPD), having a monoamide pendant arm with a bis(phosphonate) moiety, were comparatively tested for application in MRI, radiotherapy, and bone pain palliation. H-1, P-31, and O-17 NMR spectroscopy show that they are nine-coordinated, with one water molecule in the first coordination sphere of the Ln(III) ion. The bis(phosphonate) moieties are not coordinated to the lanthanide and predominantly mono- and diprotonated at physiological pH. The parameters governing the longitudinal relaxivities of the Gd complexes are similar to those of other monoamides of DOTA reported in the literature. Upon adsorption on hydroxyapatite, the relaxivities at 20 MHz and 25 degrees C of Gd-2a and Gd-2b were 22.1 and 11 s(-1) mM(-1), respectively. An in vivo gamma-ray imaging study showed that the Lu-177 complexes of 2a and 2b have a high affinity for bones, particularly for growth plates and teeth with a prolonged retention.
Disciplines :
Radiology, nuclear medicine & imaging
Chemistry
Author, co-author :
Vitha, T.
Kubicek, V.
Hermann, P.
Vander Elst, Luce ;  Université de Mons > Faculté de Médecine et de Pharmacie > Biochimie métabolique et moléculaire
Muller, Robert ;  Université de Mons > Faculté de Médecine et de Pharmacie > Chimie générale, organique et biomédicale
Kolar, Z.I.
Wolterbeek, H.T.
Breeman, W.A.P.
Lukes, I.
Peters, J. A.
Language :
English
Title :
Lanthanide(III) complexes of bis(phosphonate) monoamide analogues of DOTA: Bone-seeking agents for imaging and therapy
Publication date :
01 January 2008
Journal title :
Journal of Medicinal Chemistry
ISSN :
0022-2623
Publisher :
American Chemical Society, United States - District of Columbia
Volume :
51
Issue :
3
Pages :
677-683
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
M108 - Chimie générale, organique et biomédicale
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