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Determination of pyrophosphate in renal calculi and urine by means of an enzymatic method.
- Source :
-
Clinica chimica acta; international journal of clinical chemistry [Clin Chim Acta] 2001 Dec; Vol. 314 (1-2), pp. 187-94. - Publication Year :
- 2001
-
Abstract
- An enzymatic method for the determination of pyrophosphate which has been applied to renal calculi is described. The method involves the preconcentration of pyrophosphate using anionic exchange resin and development of the enzymatic reactions with the pyrophosphate retained on the resin. The study of calculi treatment according to calculi composition is also reported. The pyrophosphate content was dependent on the calculi composition. The highest amount of pyrophosphate was found in hydroxyapatite calculi (of the order of 10 microg/g), struvite and oxalate calculi showed a lower amount (the order was 2.5 and 4.5 microg/g, respectively) and was not detected in uric acid and cystine stones. The method was also successfully applied to the determination of pyrophosphate in human urine. For urinary pyrophosphate determination, a modification based on a clean-up of urine using activated carbon has been proposed. Pyrophosphate in human urine was of the order of 4 mg l(-1).
- Subjects :
- Algorithms
Cystine analysis
Diphosphates urine
Fructose-Bisphosphate Aldolase chemistry
Humans
Hydrogen-Ion Concentration
Indicators and Reagents
Kidney Calculi urine
Oxalates analysis
Oxalates urine
Reference Values
Spectrophotometry, Ultraviolet
Uric Acid analysis
Uric Acid urine
Diphosphates analysis
Kidney Calculi chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 0009-8981
- Volume :
- 314
- Issue :
- 1-2
- Database :
- MEDLINE
- Journal :
- Clinica chimica acta; international journal of clinical chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 11718694
- Full Text :
- https://doi.org/10.1016/s0009-8981(01)00695-7