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Related Concept Videos

Clot Retraction and Fibrinolysis01:16

Clot Retraction and Fibrinolysis

After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
Fibril-associated Collagen01:11

Fibril-associated Collagen

Fibril-associated collagens are a type of collagens present in the extracellular matrix with interrupted triple helices or FACIT (Fibril-associated collagens interrupted triple-helices). FACIT help connect and attach the collagen fibrils with each other as well as with other proteins of the extracellular matrix.
For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...
Blood Transfusion and Agglutination02:45

Blood Transfusion and Agglutination

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...
Amyloid Fibrils03:03

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
Amyloid deposits were observed as early as 1639 in the liver and the spleen.   In 1854, Rudolph Virchow performed iodine staining, normally used to...

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Related Experiment Video

Updated: Jun 12, 2026

Experimental and Imaging Techniques for Examining Fibrin Clot Structures in Normal and Diseased States
07:09

Experimental and Imaging Techniques for Examining Fibrin Clot Structures in Normal and Diseased States

Published on: April 1, 2015

[Cryofibrinogenemia].

D Saadoun1, L Musset, P Cacoub

  • 1UMR 7211 Inserm U959, centre de références maladies auto-immunes, service de médecine interne II, hôpital Pitié-Salpêtrière, 75013 Paris, France. david.saadoun@psl.aphp.fr

La Revue De Medecine Interne
|June 22, 2010
PubMed
Summary
This summary is machine-generated.

Cryofibrinogenemia (CF) is a rare disorder often affecting the skin and arteries. Early diagnosis and treatment, potentially involving fibrinolytic agents, are crucial for managing severe cases.

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Rapid Separation and Display of Active Fibrinogenolytic Agents in Sipunculus nudus through Fibrinogen-Polyacrylamide Gel Electrophoresis

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Related Experiment Videos

Last Updated: Jun 12, 2026

Experimental and Imaging Techniques for Examining Fibrin Clot Structures in Normal and Diseased States
07:09

Experimental and Imaging Techniques for Examining Fibrin Clot Structures in Normal and Diseased States

Published on: April 1, 2015

Rapid Separation and Display of Active Fibrinogenolytic Agents in Sipunculus nudus through Fibrinogen-Polyacrylamide Gel Electrophoresis
04:36

Rapid Separation and Display of Active Fibrinogenolytic Agents in Sipunculus nudus through Fibrinogen-Polyacrylamide Gel Electrophoresis

Published on: April 19, 2024

Area of Science:

  • Hematology
  • Vascular Medicine

Context:

  • Cryofibrinogenemia (CF) is an underdiagnosed condition.
  • It constitutes 10% of cryoproteins.
  • Diagnosis typically occurs between ages 50-60.

Purpose:

  • To review the clinical presentation, pathogenesis, and treatment of CF.
  • To highlight the significance of fibrinolysis defects in CF pathogenesis.
  • To explore the rationale for using fibrinolytic agents in severe CF.

Summary:

  • The skin is the most commonly affected organ in 80% of CF patients.
  • Manifestations include purpura, livedo reticularis, and Raynaud's phenomenon.
  • Severe cases can lead to skin ulcerations, necrosis, gangrene, and arterial thrombosis (20-40% of cases).

Impact:

  • Understanding CF pathogenesis can guide therapeutic strategies.
  • Prompt diagnosis and management can prevent severe complications like thrombosis and tissue necrosis.
  • This review provides a comprehensive overview for clinicians managing patients with CF.