intoduction: therapeutic radiopharmaceuticals are radiolabeled molecules to deliver sufficient doses of ionizing radiation to specific disease sites such as bone metastases, brain and liver tumors and bone marrows malignancies including multiple myeloma. among some therapeutic radiopharmaceuticals, 166ho-1,4,7,10 -tetraazacyclo dodecane-1,4,7,10 tetraethylene phosphonic acid (166ho-dotmp) is us...

in this study, production, quality control and biodistribution studies of 166ho-zoledronate have been presented as a possible bone marrow ablative agent. ho-166 chloride was produced by thermal neutron irradiation of natural 165ho(no3)3 samples. 166ho-zoledronate complex was prepared by adding the desired amount of zoledronate solution (0.2 ml, 150 mg/ml in 1 m naoh) to appropriate amount of th...

introduction: in this research, [166ho]holmium chitosan complex production is described in details, followed by determination of complex radiochemical purity, stability and biodistribution (after intra-articular injection) in wild-type male rats. finally a ho-166 based chitosan kit for ultimate radiosynovectomy as well as radiotherapy applications was developed.methods: 166ho-chitosan complex w...

AIM Radiolanthanide complexes with ligands bearing phosphonate groups have demonstrated their usefulness as bone seeking agents. Herein, we report on the synthesis of 153Sm and 166Ho complexes with 12- to 14-membered macrocycles containing different number of methylphosphonate pendant arms and their in vitro and in vivo evaluation in order to assess the effect of the cavity size and type of app...

Radiation synovectomy (RS) is indicated when conventional pharmacologic treatment of chronic synovitis has not relieved its symptoms. The use of radionuclides that are bound to ferric hydroxide (FH) particles has been shown to be effective and safe for this procedure. 166Ho-FH macroaggregates offer promising properties for RS but there is a lack of clinical data. We investigated the efficacy an...

Biodistribution studies of a water-soluble radioactive metallofullerene compound have been conducted using BALB/c mice. To this end, a sample containing Hox@C82 (x = 1, 2) was purified and derivatized to prepare the water-soluble metallofullerol, Hox@C82(OH)y. This metallofullerol was then neutron-activated (165Ho[n,gamma]166Ho) to prepare the 166Hox@C82(OH)y analog as a radiotracer, which was ...

beta-emitting 166Ho (t1/2 = 26.78 hours, E(beta)max = 1.8 MeV) complexed with the phosphonic acid chelator, 1,4,7,10 tetraazacyclododecane-1,4,7,10-tetra(methylene phosphonic acid) (DOTMP) at a ligand-to-metal ratio of 1.5:1 binds to bone. This radioactive complex is a marrow-ablating radiopharmaceutical that appears useful for preparation of bone marrow (BM) transplant recipients without the m...

Holmium-166 microspheres are used for the transarterial radioembolization (TARE) treatment of primary and secondary liver cancers. In this study, its efficacy regarding local tumor control integration into oncological sequence first 20 patients treated in our institution were examined. A total twenty-nine 166Ho-TARE procedures performed to treat hepatocellular carcinoma (HCC, fourteen patients)...