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Related Concept Videos

Gastritis-II: Pathophysiology01:17

Gastritis-II: Pathophysiology

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Gastritis is marked by disruption of the mucosal barrier that usually protects the stomach tissue from digestive juices and manifests in acute and chronic forms.
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
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Acute Pyelonephritis I: Introduction01:27

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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 Pyelonephritis II: Diagnostic Studies and Management01:28

Acute Pyelonephritis II: Diagnostic Studies and Management

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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...
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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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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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Gastritis II: Pathophysiology01:26

Gastritis II: Pathophysiology

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The pathophysiology of gastritis begins with the colonization of the stomach lining by Helicobacter pylori (H. pylori). This bacterium spreads mainly via the oral-oral route through saliva or shared utensils, and can also be transmitted in overcrowded or unhygienic environments through contaminated water, despite its brief survival outside the body.ColonizationOnce ingested, H. pylori enters the stomach and begins colonization by navigating through the mucus layer lining the stomach wall. It...
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Updated: May 5, 2026

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis
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IgA-associated glomerulonephritis.

J J McPhaul

    Annual Review of Medicine
    |January 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Immunoglobulin A (IgA)-associated glomerulonephritis diagnosis relies on identifying IgA deposits in the kidneys. Further research is needed to understand the cause and mechanisms of this kidney disease.

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    Experimental Approaches for Biochemical Analysis of Glial Fibrillary Acidic Protein and Its Disease-associated Variants
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    Area of Science:

    • Nephrology
    • Immunopathology
    • Renal Medicine

    Background:

    • IgA-associated glomerulonephritis is a significant clinical kidney problem.
    • Diagnosis requires immunohistochemical identification of IgA deposits in renal tissue.
    • Patients often present with hematuric syndromes, notably recurrent gross hematuria.

    Purpose of the Study:

    • To summarize the key aspects of IgA-associated glomerulonephritis.
    • To highlight the diagnostic importance of special stains for IgA.
    • To discuss the enigmatic role of IgA and its deposition in glomerular diseases.

    Main Methods:

    • Immunohistochemical analysis for IgA deposits.
    • Histological examination for mesangial proliferative patterns.
    • Clinical correlation of hematuric syndromes with renal pathology.

    Main Results:

    • Immunohistochemistry is essential for diagnosing IgA glomerulonephritis.
    • The characteristic histological finding is mesangial expansion.
    • The relationship between IgA nephropathy and systemic diseases with IgA deposits remains unclear.

    Conclusions:

    • IgA-associated glomerulonephritis is characterized by IgA deposits in the glomeruli.
    • The prevailing hypothesis suggests circulating IgA-containing immune complexes are involved.
    • The specific antigens, complex characteristics, and mediating systems require further elucidation.