Development and assessment of 153Sm-zoledronate complex as a possible bone pain palliative agent

Document Type : Original Article

Authors

1 Department of Inorganic Chemistry, University of Mazandaran, Babolsar, Iran

2 Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran

3 Radioisotope Products and Radiation Technology Section, Department of Nuclear Sciences and Applications, International Atomic Energy Agency (IAEA), Vienna, Austria

Abstract

Introduction:In this work, 153Sm-zoledronate (153Sm-ZLD) was studied using computational chemistry methods and prepared for possible use in bone pain palliation therapy.
Methods: The Sm(ZLD)2.7H2O complex was synthesized and characterized in solid state using computational chemistry methods followed by 153Sm-ZLD complex production, stablity, hydroxyapatite (HA) tests and also biodictribution studies in animals were studied and used for absorbed dose determination in critical organs.
Results: The Sm(ZLD)2.7H2O complex was synthesized and characterized in solid state and computational chemistry methods showed that 1:1, 1:2 and 1:3 complex formation are possible in aqueous solution. 153Sm-ZLD complex was prepared with >99% radiochemical purity (ITLC, HPLC) and specific activity of 4.4 GBq/mmol. It was stable for 24h with >95% binding to HA with accumulation in rat bones and kidneys. Absorbed dose showed kidney and osteogenic tissue as critical organs.

Conclusion: The 153Sm-ZLD complex data were compared to 153Sm-EDTMP and 153Sm-BPAMD.

Keywords

Main Subjects


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