A contribution to the formation mechanism of calcium oxalate urinary calculi. I. Stabilising urinary constituents in the formation of weddellite.

Abstract

25 to 30% of calcium oxalate urinary calculi consist of the metastable Weddellite crystal phase. By fractionation of urine it was found that mineral substances are stabilising factors. The stability was checked in dry condition at room temperature at 38 degrees C and at 110 degrees C. These results could be confirmed by precipitation from synthetic solutions. Mg, Zn, Ni, Co, Mn and Cu individually, and above all in combination, promote the formation of Weddellite. The formation of mixed crystal phases must be considered one of the main factors for the stabilisation of Weddelite in the urinaty calculus.

• Authors: A Hesse, W Berg, H J Schneider, E Hienzsch
• Journal: Urological research (Urol Res) Vol. 4 Issue 3 Pg. 125-8 (Nov 10 1976) ISSN: 0300-5623 [Print] Germany
• PMID: 1014173 (Publication Type: Journal Article)

Chemical References

• Cations, Divalent
• Oxalates
• Magnesium
• Calcium

Topics

• Calcium (urine)
• Cations, Divalent
• Chemical Precipitation
• Crystallization
• Dialysis
• Humans
• Magnesium (urine)
• Models, Biological
• Oxalates (metabolism, urine)
• Urinary Calculi (metabolism, urine)