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Related Concept Videos

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 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 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)...
Nephrotic Syndrome II : Assessment and Medical Management01:26

Nephrotic Syndrome II : Assessment and Medical Management

IntroductionNephrotic syndrome is a kidney disorder marked by excessive protein loss in the urine, leading to various systemic complications. This condition often results from damage to the glomeruli—the kidney's filtering units—causing proteinuria, low blood protein levels, and fluid retention. Understanding the assessment, diagnosis, and management of nephrotic syndrome is essential for effective treatment and prevention of further kidney damage.AssessmentPatient History: Document any history...
Nephrotic Syndrome I : Introduction01:24

Nephrotic Syndrome I : Introduction

Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of fluid...

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Related Experiment Video

Updated: Jun 4, 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

[Metabolic syndrome and nephrolithiasis].

Yasuo Kohjimoto1, Akinori Iba, Yumiko Sasaki

  • 1The Department of Urology, Wakayama Medical University.

Hinyokika Kiyo. Acta Urologica Japonica
|February 10, 2011
PubMed
Summary

Metabolic syndrome (MetS) increases kidney stone risk by altering urine composition, leading to higher rates of uric acid and calcium oxalate stones. Improving insulin resistance may help prevent these conditions.

Area of Science:

  • Nephrology
  • Endocrinology
  • Metabolic Diseases

Background:

  • Epidemiological studies link obesity, diabetes, hypertension, and metabolic syndrome (MetS) to kidney stone disease.
  • The precise mechanisms by which these metabolic disorders contribute to nephrolithiasis remain incompletely understood.

Purpose of the Study:

  • To investigate the causal relationship between metabolic syndrome (MetS) and kidney stone formation.
  • To elucidate the specific urinary changes induced by MetS that promote stone development.

Main Methods:

  • Clinical analysis of 467 nephrolithiasis patients to assess MetS trait clustering and uric acid stone risk.
  • Retrospective analysis of 30,448 patients from the 6th Nationwide Survey on Urolithiasis in Japan.
  • In vivo study using OLETF rats, an animal model of MetS, with and without pioglitazone treatment.

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Published on: January 19, 2017

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Last Updated: Jun 4, 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

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle
09:40

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle

Published on: January 19, 2017

Main Results:

  • Clustering of MetS traits was associated with decreased urinary pH and increased uric acid stone formation risk.
  • MetS traits correlated with increased kidney stone severity and elevated urinary calcium, uric acid, and oxalate excretion.
  • OLETF rats exhibited lower urinary pH, reduced citrate, and increased uric acid/calcium excretion; pioglitazone improved urinary pH.

Conclusions:

  • Metabolic syndrome significantly alters urinary composition, promoting the formation of both uric acid and calcium oxalate kidney stones.
  • Kidney stone disease should be recognized as a potential component of metabolic syndrome.
  • Interventions targeting insulin resistance, including lifestyle modifications and pharmacotherapy, may be crucial for preventing metabolic syndrome-associated kidney stones.