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Related Concept Videos

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Nephrons

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The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma...
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Nephrotic Syndrome I : Introduction01:24

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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...
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Renal Corpuscle01:20

Renal Corpuscle

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The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
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Nephrotic Syndrome II : Assessment and Medical Management01:26

Nephrotic Syndrome II : Assessment and Medical Management

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

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

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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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Acute Kidney Injury II: Pathophysiology01:29

Acute Kidney Injury II: Pathophysiology

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Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
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Updated: Oct 10, 2025

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

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The Crystalline Nephropathies.

Mark A Perazella1,2, Leal C Herlitz3

  • 1Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.

Kidney International Reports
|December 13, 2021
PubMed
Summary
This summary is machine-generated.

Crystalline nephropathies involve crystal deposition in kidney tubules, causing injury and disease. This review covers clinical and pathologic aspects of these kidney conditions.

Keywords:
acute kidney injurychronic kidney diseasecrystallinedrugsdysproteinemiasinherited disorders

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Optimization of Crystal Growth for Neutron Macromolecular Crystallography
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Area of Science:

  • Nephrology
  • Renal Pathology
  • Crystal-induced Kidney Diseases

Background:

  • Crystalline nephropathies are kidney diseases defined by intrarenal crystal deposition.
  • Crystal precipitation occurs due to molecular properties and tubular fluid conditions, leading to lumen obstruction and cytotoxicity.
  • Crystal deposition triggers inflammation, contributing to kidney injury.

Purpose of the Study:

  • To review the clinical and pathologic features of crystalline nephropathies.
  • To discuss the mechanisms of crystal-induced kidney injury.
  • To highlight the diagnostic clues and clinical associations of these conditions.

Main Methods:

  • Literature review focusing on crystalline nephropathies.
  • Synthesis of clinical and histopathologic findings.
  • Categorization based on etiology (medications, dysproteinemias, inherited disorders).

Main Results:

  • Crystalline nephropathies manifest with abnormal urinalysis, tubulopathies, acute kidney injury (AKI), and chronic kidney disease (CKD).
  • Urine sediment examination aids in early detection of crystal-related kidney injury.
  • Kidney biopsy findings prompt evaluation for underlying causes like medications, malignancies, or genetic disorders.

Conclusions:

  • Crystalline nephropathies represent a distinct group of kidney diseases with diverse causes and presentations.
  • Early identification through urinalysis and biopsy is crucial for timely diagnosis and management.
  • Understanding the clinical and pathologic aspects is essential for effective patient care.