Cooling-induced brushite crystallization in urine as a predictive risk marker for calcium kidney stone recurrence.

ABSTRACT: Kidney stones have a high recurrence rate-10% within 5 years and 50% within 10. Crystalluria reflects the urinary physicochemical environment and may serve as a recurrence marker, but key crystals like brushite are rarely detected under ambient conditions. This study aimed to identify novel recurrence markers by inducing crystallization through urine cooling and analyzing crystal composition. The analyzed urine samples from 164 stone formers, including first-time stone formers (FSF, n = 77) and recurrent stone formers (RSF, n = 87). The RSF group was further stratified into low-risk (n = 43) and high-risk (n = 44) groups based on recurrence intervals. A 24-hour urine test assessed mineral composition and supersaturation indices. Urine samples were then cooled to induce crystallization; pre

SUBMITTER: Tanaka Y 

PROVIDER: S-EPMC12414014 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature