Korean J Urol.  1990 Jun;31(3):390-395.

A Study of Lithogenic and Inhibitory Substances in 24-hour Fractionated Urine of Healthy Men

• Park NC
• Yoon JB

Abstract

Circadian rhythms of the substances related to lithogenesis such as volume, pH, creatinine, calcium, magnesium, uric acid, phosphorus, citrate and oxalate in urine of 10 healthy men who led method of urine sampling at 2 hours interval from 6 :00 were evaluated to midnight and a 6 hours : The urine volume, pH, excretory amounts and concentration of calcium, magnesium, uric acid, citrate and oxalate except creatinine and phosphorus in 24-hour fractionated urine were shown to increase during postprandial period between 8:00 and 10:00 and between 22:00 and midnight. The creatinine excretion was minimal variations in all fractionated urine. The phosphorus excretion was modestly pronounced about dinner, but low value between 10:00 and noon. Therefore, almost lithogenic and inhibitory substances in urine were relatively increased after breakfast and dinner so that lithogenesis were thought to be intimately concerned with diet.

Keyword

Lithogenic and Inhibitory Substances; Fractionated urine; Circadian rhythm

MeSH Terms

Breakfast
Calcium
Circadian Rhythm
Citric Acid
Creatinine
Diet
Humans
Hydrogen-Ion Concentration
Magnesium
Male
Meals
Phosphorus
Postprandial Period
Uric Acid
Calcium
Citric Acid
Creatinine
Magnesium
Phosphorus
Uric Acid