Abstract
Although calcitriol has been shown to have an important role in the pathogenesis of hyperparathyroidism, its use as a therapeutic agent often has been limited by calcemic and phosphatemic toxicity. Vitamin D analogs and the synthetic prohormones, with the potential to have lesser effects on calcium and phosphorus, have been introduced and shown to be effective therapeutic agents. Paricalcitol is used widely in the United States and may be associated with improved clinical outcomes. Further studies on the effects of these vitamin D sterols on the skeleton and further studies of potential differential effects on calcification processes will be forthcoming, and as the mechanisms of their lesser toxicity become understood, perhaps this will pave the way for a future generation of vitamin D analogs with even greater specificity for the suppression of hyperparathyroidism with lesser toxicity.
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