Acta Pol Pharm
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Randomized Controlled Trial Comparative Study Clinical Trial
Comparative evaluation of safety and efficacy of pamidronate and zoledronic acid in multiple myeloma patients (single center experience).
Osteolytic bone destruction, caused by the aberrant production and activation of osteoclasts, results in significant morbidity for patients with multiple myeloma (MM). Pamidronate [(3-amino-1-hydroxypropylidene)-1,1-bis-phosphonate] inhibits osteoclastic activity and reduces bone resorption. A potency of zoledronic acid (2-[imidazol-1-yl]-1-hydroxyethylidene-1,1-bisphosphonic acid, a new third generation bisphosphonate, as inhibitor of resorption was 850-fold greater than pamidronate, as was shown in preclinical models of bone resorption. ⋯ At present actual median survival time of analysed patients since MM diagnosis is 42 months, since the beginning of treatment with pamidronate and zoledronic acid--33 months, and since completing treatment--20 months and is similar in 3 treatment groups. As was shown in our single center study in MM patients the safety and efficacy of pamidronate 90 mg and zoledronic acid 4 mg and 8 mg in monthly i.v. infusion are comparable. Thus the recommended dosage of zoledronic acid is 4 mg administered as a 15 minute i.v. infusion at intervals of 3 to 4 weeks.