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Related Concept Videos

Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

Renal calculi, commonly termed kidney stones, are crystalline solid masses that form in the kidneys but can occur at any point within the urinary system, encompassing the kidneys, ureters, bladder, and urethra.The pathophysiology of renal stones involves several key factors: supersaturation of the urine with stone-forming constituents, changes in urine pH, a decrease in urine volume, and the presence of substances that promote or inhibit stone formation.Supersaturation of Urine: This is the...
Urinary Tract Calculi I: Introduction01:28

Urinary Tract Calculi I: Introduction

Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...
Urinary Tract Calculi IV: Nutrition Therapy and Prevention01:27

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Management of renal calculi focuses on effective strategies like tailored nutrition and hydration therapy. Adjusting diet and fluid intake reduces stone formation and recurrence, making these interventions simple yet powerful in kidney stone prevention and management.Understanding Kidney StonesKidney stones form when calcium, oxalate, uric acid, and cystine concentrate and crystallize in urine. Factors contributing to their formation include genetic predisposition, certain medical conditions,...
Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
Urinary Tract Calculi V: Nursing Management01:28

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AssessmentSubjective Data: Obtain a detailed health history, including any recent or chronic urinary tract infections, periods of immobilization, previous episodes of renal calculi, and medical conditions such as gout, benign prostatic hyperplasia, or hyperparathyroidism. Review the medication history for drugs that may influence stone formation, including allopurinol, analgesics, loop diuretics, or thiazide diuretics. Document the use of long-term indwelling catheters and any past surgical...

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Related Experiment Video

Updated: Jun 1, 2026

Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
07:45

Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis

Published on: February 9, 2021

Crystal/cell interaction and nephrolithiasis.

Saeed R Khan1

  • 1Department of Pathology and Department of Urology - College of Medicine, University of Florida, Gainesville, Florida 32610-0275, USA. khan@pathology.ufl.edu

Archivio Italiano Di Urologia, Andrologia : Organo Ufficiale [Di] Societa Italiana Di Ecografia Urologica E Nefrologica
|May 19, 2011
PubMed
Summary
This summary is machine-generated.

Calcium oxalate crystals, common in kidney stones, harm kidney cells, causing damage that promotes crystal growth. This cellular damage and inflammation contribute to stone formation and retention within the kidneys.

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Area of Science:

  • Nephrology
  • Biochemistry
  • Cell Biology

Background:

  • Calcium oxalate (CaOx) crystals are the primary component of most urinary stones.
  • CaOx crystals induce cellular injury, oxidative stress, and inflammation in the kidneys.

Purpose of the Study:

  • To elucidate the role of renal cell damage and inflammation in calcium oxalate urolithiasis.
  • To investigate how damaged cells influence crystal nucleation, attachment, and retention.

Main Methods:

  • The study focuses on the biological effects of calcium oxalate crystals on renal cells.
  • Analysis of cellular damage, oxidative stress markers, and inflammatory responses.
  • Examination of crystal nucleation and attachment mechanisms involving damaged cells.

Main Results:

  • Damaged and dead renal cells promote CaOx crystal nucleation at lower supersaturations.
  • Compromised cell membranes facilitate crystal adherence and kidney retention.
  • Renal epithelial damage may contribute to Randall's plaque formation and papillary surface ulceration.

Conclusions:

  • Cellular damage and inflammation are critical factors in the pathogenesis of calcium oxalate kidney stones.
  • Damaged renal cells actively participate in the processes of crystal formation and retention.
  • Understanding these mechanisms may offer new therapeutic targets for urolithiasis.