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Updated: Jun 2, 2026

Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
Published on: February 9, 2021
[Epidemiology of urolithiasis]
Michel Daudon1, Bertrand Knebelmann
1Service de biochimie A, hôpital Necker-Enfants malades, AP-HP, université Paris-Descartes, 75743 Paris Cedex 15. miche.daudon@nck.aphp.fr
Calcium oxalate stones plateaued in French males, with rising uric acid stones linked to obesity. Females saw more brushite stones and fewer struvite stones, reflecting lifestyle changes.
Area of Science:
- Nephrology
- Urology
- Epidemiology
Context:
- Trends in kidney stone composition are frequently documented.
- Calcium oxalate nephrolithiasis has shown a consistent increase in industrialized nations.
- Recent French data indicates shifts in stone types over two decades.
Purpose:
- To analyze temporal changes in kidney stone composition in France.
- To correlate these changes with evolving risk factors like diet, lifestyle, and socio-economic status.
Summary:
- In French males, calcium oxalate stones stabilized, with a decline in weddellite subtypes and a rise in uric acid calculi, associated with increased obesity and type 2 diabetes.
- French females exhibited an increase in brushite stones and a decrease in struvite calculi.
- These compositional shifts suggest evolving lithogenic risk factors influenced by population-level changes.
Impact:
- Provides insights into the changing landscape of kidney stone disease in a developed country.
- Highlights the influence of modern lifestyle and metabolic diseases on stone formation.
- Informs public health strategies and clinical management of nephrolithiasis.
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Urinary Tract Calculi I: Introduction
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations
Urinary Tract Calculi III: Medical Management
Urinary Tract Calculi VI: Surgical Management
Urinary Tract Calculi IV: Nutrition Therapy and Prevention
Urinary Tract Calculi V: Nursing Management

