May enzyme activity in urine play a role in kidney stone formation?

R. Azoury*, N. Garti, S. Perlberg, S. Sarig

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

It has been found that calcium oxalate stone formers have low UGOT and UGPT activity compared to healthy individuals. The urine of 23 stone formers and 19 controls has been tested for combined UGOT and UGPT activity. The effect of L-aspartic acid, alanine and L-glutamic acid on calcium oxalate precipitation has been tested. Only L-glutamic acid exerted a significant retardation effect at physiological concentrations. As GPT and GOT convert alanine and aspartic acid respectively into glutamic acid, a possible mechanism of retardation of kidney stone formation involving enzyme steps via glutamic acid creation in situ is suggested.

Original languageEnglish
Pages (from-to)185-189
Number of pages5
JournalUrological Research
Volume10
Issue number4
DOIs
StatePublished - Oct 1982

Keywords

  • Calcium oxalate
  • Enzyme
  • GOT
  • GPT
  • Kidney stone
  • L-glutamic acid

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