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Related Concept Videos

Complement System01:27

Complement System

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The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
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Hypersensitivity Reactions: Immune-Complex Reactions01:19

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Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum...
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Renal Corpuscle01:20

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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 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...
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Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

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Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this...
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Hypersensitivity Reactions: Cytolytic Reactions01:01

Hypersensitivity Reactions: Cytolytic Reactions

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Type II hypersensitivity involves IgG and IgM antibodies targeting cell surface antigens, leading to cell destruction. This can occur through complement activation, antibody-dependent cell-mediated cytotoxicity (ADCC), or acting as opsonins for phagocytosis. When excessive, these reactions cause significant tissue damage.Drug-induced hemolytic anemia is a common example, where drugs like penicillin or cephalosporins bind to red blood cells, forming drug-protein complexes. These complexes...
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Related Experiment Video

Updated: May 2, 2026

High-resolution Melting PCR for Complement Receptor 1 Length Polymorphism Genotyping: An Innovative Tool for Alzheimer's Disease Gene Susceptibility Assessment
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C3 glomerulopathy: A new complement-based entity.

A de Lorenzo1, S Tallón1, B Hernández-Sevillano1

  • 1Servicio de Nefrología, Hospital Universitario de Guadalajara, Departamento de Medicina, Universidad de Alcalá, Alcalá de Henares, Madrid, España.

Revista Clinica Espanola
|March 1, 2014
PubMed
Summary
This summary is machine-generated.

C3 glomerulopathy, a kidney disease involving complement alternative pathway dysregulation, includes dense-deposit disease and C3 glomerulonephritis. Eculizumab shows promise in treating this condition, particularly in young patients.

Keywords:
Alternative complement pathwayC3 glomerulopathyC3 nephritic factorDense-deposit diseaseEculizumabEnfermedad por depósitos densosFactor HFactor IFactor nefrítico C3Glomerulopatía C3Vía alternativa del complemento

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Methods for Quantitative Detection of Antibody-induced Complement Activation on Red Blood Cells
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Area of Science:

  • Nephrology
  • Immunology
  • Complement System

Background:

  • C3 glomerulopathy is a newly defined kidney disease encompassing dense-deposit disease and C3 glomerulonephritis.
  • The alternative complement pathway is central to its pathogenesis, often due to genetic defects or autoantibodies.
  • Poor prognosis and early onset in young individuals necessitate novel therapeutic strategies.

Purpose of the Study:

  • To investigate the role of the complement system in C3 glomerulopathy.
  • To evaluate the effectiveness of new therapeutic agents for C3 glomerulopathy.

Main Methods:

  • Analysis of complement pathway dysregulation in C3 glomerulopathy.
  • Clinical assessment of patients treated with eculizumab.

Main Results:

  • Mutations in complement regulatory factors (factor H, I) and C3 nephritic factor cause uncontrolled complement activation.
  • Deposition of complement products in glomeruli characterizes the disease.
  • Eculizumab, an anti-C5 antibody, has shown effectiveness in treating C3 glomerulopathy patients.

Conclusions:

  • C3 glomerulopathy represents a significant advancement in understanding glomerular diseases.
  • Targeting the complement system, specifically C5, offers a promising therapeutic avenue for C3 glomerulopathy.