title: [Urinary urease activity in urolithiasis patients].
abstract: Urease activity (UA) and the ability of the urine to form crystals (AFC) were assessed in the urine from 149 urolithiasis patients and 11 healthy controls. Patients with primary uroliths had high UA and AFC in 17-18% of the cases, in recurrent urolithiasis this percentage was 29-35%. The speed of phosphate and oxalate crystals formation as well as formation of renal calculus correlated with UA and UA levels. Thus, UA and AFC may be employed as criteria in prognostication of the duration of phosphate and oxalate lithogenesis.
authors.forename: N V
authors.initials: NV
authors.lastname: Merkusheva
authors.forename: L V
authors.initials: LV
authors.lastname: Iushina
authors.forename: I A
authors.initials: IA
authors.lastname: Makhonina
mesh_terms: D003460:Crystallization; D006801:Humans; D010070:Oxalates / Q000652:urine; D010710:Phosphates / Q000652:urine; D011446:Prospective Studies; D012008:Recurrence; D014510:Urease / Q000652:urine*; D014527:Uric Acid / Q000652:urine; D014545:Urinary Calculi / Q000737:chemistry / Q000201:enzymology* / Q000652:urine
chemical_list: D010070:Oxalates; D010710:Phosphates; D014527:Uric Acid; D014510:Urease