title: Study of inhibitor and nucleator activities in calcium stone formers.
abstract: In 30 calcium stone formers urinary citrate, magnesium, calcium, phosphorus, uric acid and oxalate excretion were compared with the activity product ratios and formation product ratios of oxalate, brushite and monosodium urate. A positive correlation was found between calcium and phosphorus excretions and APRox and APRbr; no correlation was found between oxalate, uric acid, citrate and magnesium excretion and APR or FPR. Thus calcium and phosphorus contribute significantly to the increments of urine saturation; citrate and magnesium do not modify the inhibitor urinary activity, and oxalate and uric acid do not influence inhibition and saturation activities of urine.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002118:Calcium / Q000652:urine; D002130:Calcium Phosphates / Q000652:urine; D006801:Humans; D007669:Kidney Calculi / Q000652:urine*; D008875:Middle Aged; D010070:Oxalates / Q000652:urine; D019815:Oxalic Acid; D010758:Phosphorus / Q000652:urine; D014527:Uric Acid / Q000652:urine
chemical_list: D002130:Calcium Phosphates; D010070:Oxalates; D014527:Uric Acid; D010758:Phosphorus; D019815:Oxalic Acid; C494366:calcium phosphate, dibasic, dihydrate; D002118:Calcium