In patients with diabetes mellitus the increased serum parathyroid hormone and decreased serum calcitonin might reflect a compensated regulation which maintain the serum levels of calcium and phosphate in the normal range, but lead to diabetic osteoporosis. 糖尿病患者血PTH水平升高和CT水平的下降是机体的一种代偿调节,以使血Ca、P水平维持正常,但这种变化可以引起糖尿病性骨质疏松。