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Related Concept Videos

Microbiota of the Urogenital Tract01:28

Microbiota of the Urogenital Tract

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The human urogenital system, once thought to be sterile in healthy individuals, is now recognized as a complex microbial habitat. Advancements in molecular sequencing techniques have revealed that even in healthy adults, the kidneys and bladder harbor microbial populations similar to those found in the distal urethra, albeit in much lower abundance. These resident microorganisms, while generally innocuous, can become opportunistic pathogens under conditions that alter the urogenital...
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Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

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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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Urinary Tract Calculi I: Introduction01:28

Urinary Tract Calculi I: Introduction

889
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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Urinary Tract Calculi IV: Nutrition Therapy and Prevention01:27

Urinary Tract Calculi IV: Nutrition Therapy and Prevention

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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,...
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Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

713
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...
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Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

850
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...
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Related Experiment Video

Updated: Apr 7, 2026

Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
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[MICROBIAL COMMUNITIES ON KIDNEY STONES].

Yu M Romanova, N S Mulabaev, E R Tolordava

    Molekuliarnaia Genetika, Mikrobiologiia I Virusologiia
    |July 18, 2015
    PubMed
    Summary
    This summary is machine-generated.

    Approximately 50% of kidney stones harbor bacterial infections, detectable by both standard and advanced molecular methods. Mycoplasma hominis detection was higher with PCR, highlighting its utility in identifying stone microflora and biofilms in kidney stone disease.

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    Area of Science:

    • Microbiology
    • Molecular Genetics
    • Urology

    Context:

    • Kidney stone disease (KSD) affects a significant portion of the population.
    • The role of microbial infections in KSD pathogenesis is increasingly recognized.
    • Understanding stone microflora is crucial for effective treatment strategies.

    Purpose:

    • To investigate the prevalence and types of microflora within surgically obtained kidney stones.
    • To compare the efficacy of standard microbiological methods versus PCR in detecting stone-associated infections.
    • To characterize the microbial community structure on kidney stone surfaces.

    Summary:

    • Surgical kidney stone samples were analyzed for microflora using PCR and standard microbiological techniques.
    • Results indicated that approximately 50% of kidney stones contained detectable infection agents.
    • PCR demonstrated a higher detection rate for Mycoplasma hominis compared to culture methods, especially post-antibiotic therapy.
    • Microscopy revealed that microorganisms formed multispecies biofilms on the kidney stone surfaces.

    Impact:

    • This study highlights the significant role of microbial infections in kidney stone disease.
    • PCR offers a more sensitive method for detecting certain pathogens like Mycoplasma hominis in kidney stones.
    • The presence of multispecies biofilms suggests complex microbial interactions within kidney stones.
    • Findings may inform the development of targeted diagnostic and therapeutic approaches for infected kidney stones.