Resumen

CRUZ ARENCIBIA, Jorge et al. Evaluation of the safety a Chromium (III) Phosphate suspension for radiosynoviorthesis. Rev Cubana Farm [online]. 2013, vol.47, n.1, pp.29-40. ISSN 0034-7515.

Objective: to evaluate the leakage of radioactivity after intraarticular administration of radioactive suspensions based on Chromium (III) Phosphate as well as the probability of induction of genotoxic effect. Methods: the suspensions were obtained in line with the published procedure. For the articular leakage evaluation, the radioactive suspensions were intraarticulary administered in rats and rabbits. The radioactivity retention was measured by gamma chamber. A comparison with commercial radiopharmaceutical labeled with 32P was made. The genotoxicity studies determined the frequency of micronuclei formation in the rats´ bone marrow erythrocytes by using 2 doses and 2 time intervals for each preparation. Results: the radiolabeled suspensions under evaluation showed that the leakage was not significant during 3 weeks (<3% for the suspension labeled with 51Cr and ~5% in the one labeled with 32P) and the advantages of having larger particle preparation were confirmed. For those suspension labeled with 32P and 90Y , no significant difference was seen in the frequency of micronuclei formation for the first time interval, regardless of the administered doses. The micronuclei formation increased for higher doses and at longer time intervals. Conclusions: the results demonstrated the possibility of the safe use of a of Chromium (III) Phosphate suspension labeled with several radionuclides for the treatment of different joints, in particular the leakage was not significant during 3 weeks and the advantages of having a larger particle radiopharmaceutical was confirmed. For the suspensions labeled with 32P and 90Y micronucleus frequency mildly increased with the time and administered doses.

Palabras clave : radiosynoviorthesis; Chromium phosphate; Chronic Synovitis; Adverse effects; Rheumatoid arthritis; hemophilia.

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