Barium titanate microparticles as potential carrier platform for lanthanide radionuclides for their use in the treatment of arthritis |
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Authors: | Sudipta Chakraborty K.V. Vimalnath Jyothi Sharma Priyalata Shetty H.D. Sarma Rubel Chakravarty Deep Prakash P.K. Sinha Ashutosh Dash |
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Affiliation: | 1. Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Mumbai, India;2. Powder Metallurgy Division, Bhabha Atomic Research Centre, Mumbai, India;3. Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai, India |
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Abstract: | Since the inception of radiation synovectomy, a host of radioactive colloids and microparticles incorporating suitable therapeutic radionuclides have been proposed for the treatment of arthritis. The present article reports the synthesis and evaluation of barium titanate microparticles as an innovative and effective carrier platform for lanthanide radionuclides in the preparation of therapeutic agents for treatment of arthritis. The material was synthesized by mechanochemical route and characterized by X‐ray diffraction, scanning electron microscopy, surface area, and particle size distribution analyses. Loading of lanthanide radionuclides (166Ho, 153Sm, 177Lu, and 169Er) on the microparticles was achieved in high yield (> 95%) resulting in the formulation of loaded particulates with excellent radiochemical purities (> 99%). Radiolanthanide‐loaded microparticles exhibited excellent in vitro stability in human serum. In vitro diethylene triamine pentaacetic acid challenge study indicated fairly strong chemical association of lanthanides with barium titanate microparticles. Long‐term biodistribution studies carried out after administration of 177Lu‐loaded microparticles into one of the knee joints of normal Wistar rats revealed near‐complete retention of the formulation (> 96% of the administered radioactivity) within the joint cavity even 14 days post‐administration. The excellent localization of the loaded microparticles was further confirmed by sequential whole‐body radio‐luminescence imaging studies carried out using 166Ho‐loaded microparticles. |
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Keywords: | barium titanate (BaTiO3) microparticles carrier platform lanthanide radionuclide radiation synovectomy (RSV) |
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