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Related Concept Videos

Acute Pyelonephritis I: Introduction01:27

Acute Pyelonephritis I: Introduction

30
Pyelonephritis is a bacterial infection that primarily affects the renal parenchyma and collecting system, including the renal pelvis, tubules, and interstitial tissue of one or both kidneys. It can be classified as either acute—a sudden, severe infection—or chronic, which refers to long-term or recurrent kidney infections.The primary cause of acute pyelonephritis (APN) is bacterial infection, with Escherichia coli accounting for approximately 70-80% of cases. Other bacteria, such...
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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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Nephrotic Syndrome I : Introduction01:24

Nephrotic Syndrome I : Introduction

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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...
17
Renal Corpuscle01:20

Renal Corpuscle

3.0K
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...
3.0K
Acute Pyelonephritis II: Diagnostic Studies and Management01:28

Acute Pyelonephritis II: Diagnostic Studies and Management

26
Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
26
Urinary Tract Infection II: Pathophysiology01:25

Urinary Tract Infection II: Pathophysiology

25
The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
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Related Experiment Video

Updated: Aug 11, 2025

Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis
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Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis

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Infection-Related Glomerulonephritis.

Mazdak A Khalighi1, Anthony Chang2

  • 1Department of Dermatology, University of Utah, Salt Lake City, Utah, USA.

Glomerular Diseases
|February 8, 2023
PubMed
Summary

Infection-related glomerulonephritis (GN) links bacterial infections to kidney damage. Clinical and pathologic findings vary, with acute cases often self-limiting and chronic infections causing irreversible injury.

Keywords:
ComplementKidney biopsyRenal pathology

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Last Updated: Aug 11, 2025

Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis
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Area of Science:

  • Nephrology
  • Pathology
  • Infectious Diseases

Background:

  • Bacterial infections are linked to glomerular injury, a condition termed infection-related glomerulonephritis (GN).
  • Clinical and pathological manifestations of infection-related GN depend on the infection's duration, magnitude, and pathogen.
  • Acute infections may cause self-limiting GN, while chronic infections can lead to irreversible kidney damage.

Purpose of the Study:

  • To review the clinical and pathological findings associated with infection-related glomerulonephritides.
  • To highlight the diagnostic challenges posed by overlapping features with other glomerular diseases.

Main Methods:

  • Review of clinical and pathological presentations of infection-related GN.
  • Analysis of characteristic morphologic alterations, immunofluorescence, and ultrastructural findings.
  • Discussion of differential diagnoses, including C3 glomerulopathies and co-existing nephropathies.

Main Results:

  • Acute exudative GN with neutrophil influx is characteristic of infection-related glomerular injury.
  • Immunofluorescence often shows C3 deposition, with or without immunoglobulin, and electron microscopy reveals subepithelial "humps."
  • Pathological findings can overlap with C3 glomerulopathies and other nephropathies like diabetic nephropathy, lupus nephritis, or IgA nephropathy.

Conclusions:

  • Infection-related GN is a spectrum of glomerular injury with diverse clinical and pathological presentations.
  • Pathologic findings may overlap with other glomerular diseases, complicating diagnosis.
  • Prognosis and treatment approaches vary significantly among different forms of infection-related GN.