factor i
Definition
Noun: 1. A specific plasma protein involved in blood coagulation: Factor I is the scientific name for the soluble protein fibrinogen, which is a normal component of blood plasma. It is converted into insoluble fibrin by the enzyme thrombin during the process of blood clot formation.
Usage Notes
- "Factor I" is a technical, scientific term used primarily in medicine, hematology, and biochemistry.
- It is almost always preceded by the definite article "the" when referring to the protein itself (e.g., "the factor I level").
- In common medical parlance, its common name, fibrinogen, is used more frequently.
Examples
- Scientific/Medical Context:
- A deficiency in factor I can lead to severe bleeding disorders.
- The laboratory test measures the concentration of factor I in the patient's plasma.
- During coagulation, factor I is converted into fibrin strands.
Advanced Usage
- "Factor I deficiency": The medical condition resulting from low levels or dysfunctional fibrinogen, known as afibrinogenemia or hypofibrinogenemia.
- The patient was diagnosed with congenital factor I deficiency.
Variants and Related Words
- Fibrinogen (n): The common biochemical name for Factor I.
- Fibrinogen is a glycoprotein synthesized in the liver.
- Fibrin (n): The insoluble, fibrous protein that forms the mesh of a blood clot, produced when thrombin cleaves fibrinogen.
- The clot is stabilized by a network of fibrin.
Synonyms
- Fibrinogen: This is the direct synonym and more commonly used term in many contexts.
Related Terms (Not Synonyms)
- Coagulation factor: The general category to which Factor I belongs. Other factors include Factor II (prothrombin), Factor VIII, etc.
- Thrombin: The enzyme that catalyzes the conversion of fibrinogen (Factor I) to fibrin.
Noun
-
a protein present in blood plasma; converts to fibrin when blood clots
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