Definition

Noun: A white, insoluble, fibrous protein that is formed from fibrinogen by the action of the enzyme thrombin during the process of blood clotting. It polymerizes to form a mesh-like network that traps blood cells and platelets, creating a stable clot to stop bleeding.

Usage

"Fibrin" is a technical term used primarily in the fields of biology, medicine, and physiology. It refers specifically to the final, structural protein component of a blood clot. * The formation of fibrin is the crucial last step in the coagulation cascade. * A deficiency in factors that lead to fibrin formation can cause bleeding disorders. * Under a microscope, the fibrin network appears as fine threads.

Advanced Usage

• Fibrin scaffold: In medical research and tissue engineering, the natural fibrin network is studied and sometimes used as a biological scaffold to support cell growth and tissue regeneration.
• Fibrin degradation products (FDPs): These are fragments produced when fibrin clots are broken down (fibrinolysis). Measuring FDPs in blood tests can help diagnose conditions like disseminated intravascular coagulation (DIC).

Variants and Related Words

• Fibrinogen (noun): The soluble plasma protein precursor that is enzymatically converted into insoluble fibrin.
• Fibrinolysis (noun): The natural physiological process of breaking down fibrin clots.
• Fibrinoid (adjective): Resembling fibrin; a term used in pathology to describe material with a similar appearance in tissues.

Synonyms

• Clotting protein
• Coagulation protein

Related Phrases and Concepts

• Fibrin clot: The physical mass formed by the fibrin network together with trapped blood cells.
• Fibrin sealant: A surgical adhesive or hemostatic agent derived from fibrinogen and thrombin, used to mimic the body's final clotting stage to control bleeding.

Noun

1. a white insoluble fibrous protein formed by the action of thrombin on fibrinogen when blood clots; it forms a network that traps red cells and platelets