title: [Citric acid excretion in stone-formers and healthy controls on normal and standard diet (author's transl)].
abstract: The citric acid excretion and concentration in 24 hours urine was measured in 70 stone-formers and 16 normal subjects (controls) on normal food intake followed by 9 days on a standard diet. On days 9 and 10 on the standard diet urine was collected in 3 hours portions and citric acid and calcium was measured. From day 7 to day 10 on standard diet we found only a slight change in the 24-hour excretion of citric acid ("steady state"). The citric acid excretion and concentration is significantly lower in stone-formers than in healthy controls. In both groups there is a sinusoid rhythm in citric acid excretion and concentration throughout the 24 hour period. The calcium concentration is at its maximum when the citric acid concentration is at its minimum.
mesh_terms: D002118:Calcium / Q000652:urine; D002940:Circadian Rhythm; D002951:Citrates / Q000652:urine*; D004032:Diet; D005260:Female; D006801:Humans; D008297:Male; D012008:Recurrence; D014545:Urinary Calculi / Q000652:urine*
chemical_list: D002951:Citrates; D002118:Calcium
vernacular_title: Zitratausscheidung bei Harnsteinpatienten und Gesunden unter Normal- und Standardkost.