Reduced Binding of [3H]l,25-Dihydroxyvitamin D3in the Parathyroid Glands of Patients with Renal Failure

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Abstract
This study examined the hypothesis that altered binding of 1,25-dihydroxyvitamin D3 (1,25-(OH)2D3) to parathyroid receptors might be involved in the pathogenesis of secondary hyperparathyroidism associated with chronic renal failure. The binding of [3H]1,25-(OH)2D3 to hyperplastic parathyroid glands obtained from seven patients with chronic renal failure was measured. These values were compared with those for binding to hyperplastic parathyroid tissue obtained from six patients who had received renal transplants and for binding to parathyroid adenomas removed from five patients who had primary hyperparathyroidism.