Abstract
Serum calcitonin and serum parathyroid hormone (PTH) were measured in 50 patients undergoing regular haemodialysis for end-stage chronic renal failure, and an analysis of osteoclast and osteoblast activities was made in bone biopsies obtained by iliac crest trephine. Osteoclast and osteoblast activities were studied in a multivariate analysis in relation to factors which might reasonably be thought to influence activity, namely serum calcitonin, serum PTH, serum calcium, serum inorganic phosphate, and bone aluminium. Only serum PTH correlated strongly with osteoclast activity (p = 0.0047). Serum PTH correlated also with osteoblast activity (p = 0.0024). Serum inorganic phosphate correlated negatively with osteoblast activity (p = 0.0082). Serum calcitonin did not correlate with osteoclast or osteoblast activities but did correlate strongly with bone aluminium in a multivariate analysis (p = 0.0078). Bone aluminium did not correlate independently with osteoclast or osteoblast activities. This study affirms the implied powerful role of PTH in influencing osteoclast and osteoblast activities in end-stage chronic renal failure.
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