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Related Concept Videos

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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...
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Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
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Meaning of Cystoscopic Examination:Cystoscopy is an essential diagnostic tool in urology that is used to assess the structure and function of the genitourinary system. It provides a direct view of the urethra, bladder, and, in some cases, the ureteral openings. This procedure helps detect structural abnormalities, infections, cancers, and blockages in the urinary tract. There are two types of cystoscopy:Flexible cystoscopy is commonly performed in outpatient settings due to its less invasive...
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Cystic fibrosis (CF) is an autosomal recessive disorder that predominantly affects individuals of Northern European descent, occurring at a rate of 1 in 3500. It is caused by a genetic mutation in a gene on chromosome 7, most commonly the ΔF508 mutation, that codes for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. This results in thicker mucus secretions and obstruction pathologies in multiple organs, including the lungs and sinuses.
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Urinary Tract Calculi III: Medical Management01:30

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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)...
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Urinalysis is a widely used diagnostic test that analyzes urine's physical, chemical, and microscopic characteristics. Healthcare providers use it to detect and monitor various health conditions, including renal disease, urinary tract infections (UTIs), diabetes, and metabolic or systemic disorders.Components of UrinalysisUrinalysis consists of three primary components: physical, chemical, and microscopic examination. Each provides unique insights into the urine sample and, by extension, the...
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Updated: Nov 7, 2025

Implementing Patch Clamp and Live Fluorescence Microscopy to Monitor Functional Properties of Freshly Isolated PKD Epithelium
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[Cystinuria].

Caroline Prot-Bertoye1, Michel Daudon2, Isabelle Tostivint3

  • 1Service de physiologie - explorations fonctionnelles rénales et métaboliques, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France.

Nephrologie & Therapeutique
|April 29, 2021
PubMed
Summary
This summary is machine-generated.

Cystinuria, a genetic kidney stone disorder, causes stones due to poor cystine solubility. Treatment focuses on alkaline hyperdiuresis to increase urine pH and reduce stone recurrence.

Keywords:
AlcalinisationAlkalinizationCalculs rénauxCysteine-binding thiol agentsCystinuriaCystinurieDérivés sulfhydrylésRenal calculi

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Area of Science:

  • Nephrology
  • Urology
  • Medical Genetics

Background:

  • Cystinuria is the most common monogenic nephrolithiasis.
  • Poor cystine solubility at acidic urine pH (<7) leads to recurrent cystine stones.
  • Patients often have high blood pressure and chronic kidney disease.

Purpose of the Study:

  • To outline the medical management of cystinuria.
  • To emphasize the goals of preventive treatment.
  • To discuss second-line therapeutic options.

Main Methods:

  • Alkaline hyperdiuresis as the primary treatment strategy.
  • Targeting urine pH between 7.5 and 8.
  • Aiming for urine specific gravity ≤1.005.

Main Results:

  • Alkaline hyperdiuresis is the cornerstone of preventive medical treatment.
  • Achieving specific urine parameters is crucial for preventing stone formation.
  • Thiol agents like D-penicillamine and tiopronin are second-line options.

Conclusions:

  • Effective management of cystinuria involves alkaline hyperdiuresis to achieve target urine pH and specific gravity.
  • Close monitoring for adverse events is essential when using thiol agents.