Abstract |
(177)Lu is presently considered as an excellent radionuclide for developing bone pain palliation agents owing to its suitable nuclear decay characteristics [T(1/2)=6.73d, E(beta)((max))=497keV, E(gamma)=113keV (6.4%) and 208keV (11%)] and large-scale production feasibility with adequate specific activity using moderate flux research reactors. Multidentate polyaminophosphonic acids have already been proven as the carrier molecule of choice for radiolanthanides and similar +3 metal ions in designing agents for palliative radiotherapy of bone pain due to skeletal metastases. The present paper describes a comparison between (177)Lu complexes of two potential polyaminophosphonic acid ligands, namely Ethylenediaminetetramethylene phosphonic acid (EDTMP) and 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetramethylene phosphonic acid ( DOTMP) with respect to their radiochemical and in-vivo biological characteristics. Although both the agents have exhibited promising features, the study reveals that (177)Lu-EDTMP has marginally higher skeletal accumulation in comparison to that of (177)Lu-DOTMP, while the latter has slightly faster blood clearance along with lower retention in liver and kidneys in animal models.
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Authors | Sudipta Chakraborty, Tapas Das, Haladhar Dev Sarma, Meera Venkatesh, Sharmila Banerjee |
Journal | Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
(Appl Radiat Isot)
Vol. 66
Issue 9
Pg. 1196-205
(Sep 2008)
ISSN: 0969-8043 [Print] England |
PMID | 18372188
(Publication Type: Journal Article)
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Chemical References |
- 177Lu-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylenephosphonic acid)
- Organometallic Compounds
- Organophosphorus Compounds
- Radioisotopes
- lutetium ethylenediaminetetramethylene phosphonic acid
- Lutetium
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Topics |
- Animals
- Bone Neoplasms
- Drug Stability
- Lutetium
(pharmacokinetics, therapeutic use)
- Organometallic Compounds
(pharmacokinetics, therapeutic use)
- Organophosphorus Compounds
(pharmacokinetics, therapeutic use)
- Pain
- Palliative Care
- Rabbits
- Radioisotopes
(pharmacokinetics, therapeutic use)
- Rats
- Rats, Wistar
- Tissue Distribution
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