当前位置： SCI文献检索 > JOURNAL OF INORGANIC BIOCHEMISTRY期刊下所有文献 > Metal-ion speciation in blood plasma incorporating the tetraphosphonate, N,N-dimethylenephosphonate-1-hydroxy-4-aminopropilydenediphosphonate (APDDMP), in therapeutic radiopharmaceuticals.

Metal-ion speciation in blood plasma incorporating the tetraphosphonate, N,N-dimethylenephosphonate-1-hydroxy-4-aminopropilydenediphosphonate (APDDMP), in therapeutic radiopharmaceuticals.

Abstract：

:In a quest for more effective radiopharmaceuticals for pain palliation of metastatic bone cancer, this paper relates results obtained with 166Ho and 153Sm complexed to the bone seeking phosphonate, N,N-dimethylenephosphonate-1-hydroxy-4-aminopropylidenediphosphonate (APDDMP). APDDMP is synthesised from the known bone cancer pain palliation agent 1-hydroxy-3-aminopropylidenediphosphonate (APD) and was complexed to lanthanide trivalent metal ions. This work is performed to utilise the idea that the energetic beta-particle emitter, 166 Ho, coupled with phosphonate ligands such as APD and APDDMP could afford a highly effective radiopharmaceutical in the treatment of bone cancer. Complex-formation constants of APDDMP with the important blood plasma metal-ions, Ca2+, Mg2+, and Zn2+ and the trivalent lanthanides Ho3+ and Sm3+ were measured by glass electrode potentiometry at 37 degrees C and I = 150 mM. Blood plasma models were constructed using the computer code ECCLES and the results compared with those gathered from animal tests. The 166Ho-APDDMP complex was found to have little liver or bone uptake while 153Sm-APDDMP had a moderate bone uptake. This was primarily due to the high affinity of APDDMP for Ca(II). Clinical observations could be explained by the blood plasma modelling.

journal_name

J Inorg Biochem

journal_title

Journal of inorganic biochemistry

authors

Zeevaart JR,Jarvis NV,Louw WK,Jackson GE

doi

10.1016/s0162-0134(00)00125-2

subject

Has Abstract

pub_date

2001-01-01 00:00:00

pages

57-65

issue

1

eissn

0162-0134

issn

1873-3344

pii

S0162-0134(00)00125-2

journal_volume

83

pub_type

杂志文章

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