title: Calcium-loading test and bone disease in patients with urolithiasis.
abstract: A group of 121 patients with a history of multiple or complicated calcium urolithiasis were divided into three subgroups: normal, absorptive and renal/resorptive calciuria by means of a calcium-loading test. Patients with renal hypercalciuria had lower bone mineral content (BMC) than the other groups but did not differ in amount of bone or TmPO4/GFR. The 24-hour urine calcium excretion was elevated in patients with renal and absorptive type of hypercalciuria but not in patients with normal calcium-loading test and there was no correlation to BMC. The c-AMP/creatinine seemed to discriminate patients with resorptive calciuria from patients with renal calciuria. It is suggested that only patients with renal hypercalciuria should be treated with calcium-retaining drugs such as thiazides.
mesh_terms: D000328:Adult; D001842:Bone and Bones / Q000378:metabolism*; D002118:Calcium / Q000378:metabolism*; D003404:Creatinine / Q000652:urine; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008903:Minerals / Q000378:metabolism*; D014545:Urinary Calculi / Q000145:classification / Q000378:metabolism* / Q000628:therapy
chemical_list: D008903:Minerals; D003404:Creatinine; D002118:Calcium