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Related Concept Videos

Nephrons01:10

Nephrons

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 happens...
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...
Renal Corpuscle01:20

Renal Corpuscle

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 capillaries...
Acute Kidney Injury II: Pathophysiology01:29

Acute Kidney Injury II: Pathophysiology

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...
Diabetic Nephropathy01:28

Diabetic Nephropathy

Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration occur due to afferent arteriolar...
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...

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Analysis of Nephron Composition and Function in the Adult Zebrafish Kidney
08:53

Analysis of Nephron Composition and Function in the Adult Zebrafish Kidney

Published on: August 9, 2014

Nephronophthisis.

Roslyn J Simms1, Lorraine Eley, John A Sayer

  • 1Institute of Human Genetics, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne, UK.

European Journal of Human Genetics : EJHG
|December 11, 2008
PubMed
Summary
This summary is machine-generated.

Nephronophthisis (NPHP) is a genetic kidney disease causing renal failure. Research identifies nephrocystins, proteins crucial for kidney development and structure, offering insights into disease mechanisms.

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Area of Science:

  • Nephrology
  • Genetics
  • Molecular Biology

Background:

  • Nephronophthisis (NPHP) is an inherited kidney disease causing chronic tubulointerstitial nephritis and leading to end-stage renal failure.
  • NPHP is frequently associated with multisystem disorders like Joubert syndrome and Senior-Loken syndrome.
  • Recent advances have identified multiple genes responsible for NPHP, with most encoding nephrocystins.

Purpose of the Study:

  • To investigate the molecular genetic basis of Nephronophthisis (NPHP).
  • To understand the cellular localization and functional roles of nephrocystins in kidney development and disease.

Main Methods:

  • Molecular genetic analysis to identify NPHP-associated genes.
  • Immunofluorescence and biochemical studies to determine nephrocystin protein localization.
  • Functional studies to assess the role of nephrocystins in cellular pathways.

Main Results:

  • Several NPHP genes have been identified, encoding nephrocystins.
  • Nephrocystins are localized to primary cilia/basal bodies, adherens junctions, and focal adhesion complexes.
  • Functional studies suggest nephrocystins are involved in planar cell polarity pathways critical for renal development.

Conclusions:

  • Shared protein localization indicates common pathogenic mechanisms in NPHP.
  • Nephrocystins play a vital role in maintaining kidney tubular architecture and development.
  • Understanding nephrocystin function provides insights into NPHP pathogenesis and potential therapeutic targets.