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Related Concept Videos

Hypersensitivity Reactions: Immune-Complex Reactions01:19

Hypersensitivity Reactions: Immune-Complex Reactions

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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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Transcytosis of IgG01:15

Transcytosis of IgG

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Transcytosis is the process in which molecules are internalized by endocytosis, transported across the cell, and released through exocytosis from the opposite end of the cell. Molecules such as insulin, immunoglobulins, and certain nutrients are transferred through the recycling endosomes by recycling and transcytosis.
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
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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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Blood Transfusion and Agglutination02:45

Blood Transfusion and Agglutination

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Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
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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...
306
Hypersensitivity Reactions: Cytolytic Reactions01:01

Hypersensitivity Reactions: Cytolytic Reactions

115
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: Mar 23, 2026

Granulocyte-dependent Autoantibody-induced Skin Blistering
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[Cryoglobulinemic vasculitis].

N Blank1, H-M Lorenz2

  • 1Medizinische Klinik 5, Sektion Rheumatologie, Im Neuenheimer Feld 410, 69120, Heidelberg, Deutschland. norbert.blank@med.uni-heidelberg.de.

Zeitschrift Fur Rheumatologie
|April 2, 2016
PubMed
Summary
This summary is machine-generated.

Cryoglobulinemic vasculitis affects small arteries and can cause severe impairment, even with low cryoglobulin levels. Early recognition of symptoms is key for diagnosis and treatment of this complex condition.

Keywords:
CryoglobulinsGlucocorticoidsMonoclonalPolyclonalRituximab

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Area of Science:

  • Rheumatology
  • Nephrology
  • Hematology

Background:

  • Cryoglobulinemic vasculitis is a small-vessel vasculitis impacting multiple organs.
  • Low levels of cryoglobulins can cause significant patient impairment.
  • Diagnosis can be challenging due to the difficulty in detecting low cryoglobulin concentrations.

Purpose of the Study:

  • To highlight the importance of recognizing clinical symptoms for early diagnosis.
  • To outline the diagnostic challenges and necessary investigations.
  • To discuss current therapeutic strategies and their basis.

Main Methods:

  • Review of clinical presentation and diagnostic workup for cryoglobulinemic vasculitis.
  • Analysis of underlying causes, including hematological diseases, autoimmune disorders, and infections.
  • Evaluation of treatment modalities based on disease severity and underlying etiology.

Main Results:

  • Typical clinical symptoms are crucial for initiating appropriate laboratory diagnostic procedures.
  • Detection of low cryoglobulin levels presents a diagnostic hurdle.
  • Treatment requires addressing the underlying cause and may involve glucocorticoids, rituximab, or plasmapheresis.

Conclusions:

  • Prompt recognition of clinical signs is essential for timely diagnosis of cryoglobulinemic vasculitis.
  • Management strategies are tailored to the individual patient's condition and underlying causes.
  • Treatment recommendations are often based on registry data due to limited clinical trials.