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Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
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Correlation analysis between urinary crystals and upper urinary calculi
Xi Zhang1, Yang Zheng2, Yichun Wang1
1Department of Urology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Asian Journal of Urology
|November 13, 2024
Summary
Detecting calcium oxalate crystals in urine can predict calcium oxalate stones. A concentration over 110 crystals/μL indicates a higher risk of urinary stone formation, aiding prevention.
Area of Science:
- Nephrology
- Urology
- Biochemistry
Background:
- Urinary calculi (kidney stones) are a common health issue.
- Identifying stone composition aids in treatment and prevention.
- Urinary crystals may correlate with stone formation and composition.
Purpose of the Study:
- To analyze the correlation between urinary crystals and urinary calculi.
- To evaluate the predictive value of urinary crystal detection for stone composition and formation risk.
Main Methods:
- Clinical data from 237 urinary calculi patients were analyzed.
- Urinary crystal types and stone composition were recorded.
- Receiver operating characteristic (ROC) curve analysis determined cut-off values for predicting stone formation risk.
Main Results:
- Calcium oxalate was the most common stone component (84.81%).
- Calcium oxalate crystals were detected in 45.77% of patients with calcium oxalate stones.
- A cut-off value of 110 crystals/μL of calcium oxalate crystals in urine predicted stone formation risk.
Conclusions:
- Urinary calcium oxalate crystals can predict calcium oxalate stone composition.
- A concentration exceeding 110 crystals/μL suggests increased stone formation risk.
- This non-invasive method can guide clinical management and prevention strategies.
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