About: Chemical and biological evaluation of 153Sm and 166Ho complexes of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylphosphonic acid monoethylester) (H4dotpOEt)

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About: Chemical and biological evaluation of 153Sm and 166Ho complexes of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylphosphonic acid monoethylester) (H4dotpOEt) Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The novel methylphosphonic acid monoethylester (H4dotpOEt) has been synthesized and characterized and their complexes with Sm(III) and Ho(III) ions were studied. Dissociation constants of the ligand are lower than those of H4dota. The stability constants of the Ln(III)-H4dotpOEt complexes are surprisingly much lower that those of H4dota probably due to a lower coordination ability of the phosphonate monoester groups. Acid-assisted decomplexation studies have shown that both complexes are less kinetically inert than the H4dota complexes, but still much more inert than complexes of open-chain ligands. Nevertheless, the synthesis of 153Sm and 166Ho complexes with this ligand led to stable complexes both in vitro and in vivo. A very low binding of these complexes to hydroxyapatite (HA) and calcified tissues was observed confirming the assumption that a fully ionized phosphonate group(s) is necessary for a strong bone affinity. Both complexes show similar behaviour in vivo. The novel methylphosphonic acid monoethylester (H4dotpOEt) has been synthesized and characterized and their complexes with Sm(III) and Ho(III) ions were studied. Dissociation constants of the ligand are lower than those of H4dota. The stability constants of the Ln(III)-H4dotpOEt complexes are surprisingly much lower that those of H4dota probably due to a lower coordination ability of the phosphonate monoester groups. Acid-assisted decomplexation studies have shown that both complexes are less kinetically inert than the H4dota complexes, but still much more inert than complexes of open-chain ligands. Nevertheless, the synthesis of 153Sm and 166Ho complexes with this ligand led to stable complexes both in vitro and in vivo. A very low binding of these complexes to hydroxyapatite (HA) and calcified tissues was observed confirming the assumption that a fully ionized phosphonate group(s) is necessary for a strong bone affinity. Both complexes show similar behaviour in vivo. (en)
Title	Chemical and biological evaluation of 153Sm and 166Ho complexes of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylphosphonic acid monoethylester) (H4dotpOEt) Chemical and biological evaluation of 153Sm and 166Ho complexes of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylphosphonic acid monoethylester) (H4dotpOEt) (en)
skos:prefLabel	Chemical and biological evaluation of 153Sm and 166Ho complexes of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylphosphonic acid monoethylester) (H4dotpOEt) Chemical and biological evaluation of 153Sm and 166Ho complexes of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylphosphonic acid monoethylester) (H4dotpOEt) (en)
skos:notation	RIV/00216224:14310/08:00026088!RIV10-MSM-14310___
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(LC06035), P(OC 179), S, Z(MSM0021620857)
http://linked.open...iv/cisloPeriodika	7
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Vaněk, Jakub Hermann, Petr Lubal, Přemysl
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	359700
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/08:00026088
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Radiopharmaceuticals; macrocyclic and phosphonate complexes; cyclen derivative; DOTA analogue; lanthanide complexes; radiolanthanides; biodistribution; stability constants; formation and decomplexation kinetics (en)
http://linked.open.../riv/klicoveSlovo	lanthanide complexes stability constants Radiopharmaceuticals biodistribution DOTA analogue cyclen derivative formation and decomplexation kinetics macrocyclic and phosphonate complexes radiolanthanides
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[33A1DB583D5B]
http://linked.open...i/riv/nazevZdroje	Journal of Inorganic Biochemistry
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of Biophysical Chemistry, Bioelectrochemistry and Bioanalysis. New Tools for Genomics, Proteomics and Biomedicine. http://linked.opendata.cz/resource/domain/vavai/projekt/OC%20179
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	102
http://linked.open...iv/tvurceVysledku	Hermann, Petr Lubal, Přemysl Vaněk, Jakub Santos, Isabel Jandurová, Zuzana Marques, Fernanda Foerstrová, Michaela Lurdes, Gano
http://linked.open...ain/vavai/riv/wos	000256924600014
http://linked.open...n/vavai/riv/zamer	Nové molekulární systémy pro pokročilé aplikace prospěšné pro zdraví a šetrné k životnímu prostředí
issn	0162-0134
number of pages	10 (xsd:int)
http://localhost/t...ganizacniJednotka	14310

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