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Related Concept Videos

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 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 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 IV: Nutrition Therapy and Prevention01:27

Urinary Tract Calculi IV: Nutrition Therapy and Prevention

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 V: Nursing Management01:28

Urinary Tract Calculi V: Nursing Management

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...
Renal Tubule and Collecting Duct01:24

Renal Tubule and Collecting Duct

The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...

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Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
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Update on primary hypercalciuria from a genetic perspective.

Giuseppe Vezzoli1, Laura Soldati, Giovanni Gambaro

  • 1Nephrology Unit, San Raffaele Scientific Institute, Milan, Italy. vezzoli.giuseppe@hsr.it

The Journal of Urology
|March 18, 2008
PubMed
Summary
This summary is machine-generated.

Primary hypercalciuria, a common genetic disorder affecting calcium transport, is likely polygenic. Genetic factors and diet interact to cause this condition and its complications like kidney stones.

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Area of Science:

  • Nephrology
  • Genetics
  • Metabolic Disorders

Background:

  • Primary hypercalciuria affects 5-10% of the population.
  • It is frequently diagnosed in patients with kidney stones or osteoporosis.
  • In children, it is linked to hematuria, stones, and enuresis.

Purpose of the Study:

  • To provide an update on genetic studies of primary hypercalciuria.
  • To explore the implications of genetic findings for pathogenesis and complications.

Main Methods:

  • Literature review of PubMed, MEDLINE, and Scopus databases.
  • Focus on genetic studies in humans related to hypercalciuria pathogenesis and complications.

Main Results:

  • Primary hypercalciuria is likely a polygenic disorder, not strictly autosomal dominant.
  • Candidate genes (e.g., CASR, VDR, CLDN16) are implicated in its pathogenesis.
  • These genes may also contribute to complications such as nephrolithiasis and osteoporosis.

Conclusions:

  • The traditional classification (absorptive, renal, resorptive) is insufficient.
  • Primary hypercalciuria represents a distinct disorder of calcium transport.
  • It results from complex interactions between multiple genetic factors and dietary influences.