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Coagulation Factor V (F5): Essential Regulator of Blood Clotting Cascade

Endocrinology Diagnostics

Key Summary of Factor V (F5):

Molecular Structure

  • Glycoprotein with 330 kDa weight
  • Six domains in A1-A2-B-A3-C1-C2 layout
  • Stays active 12-36 hours in bloodstream

Synthesis and Activation

  • Primarily synthesized in liver hepatocytes
  • Activated by thrombin or Factor Xa
  • Regulated by Activated Protein C (APC)

Physiological Function

  • Critical cofactor in coagulation cascade
  • Accelerates prothrombin conversion to thrombin
  • Operates in prothrombinase complex on platelet surfaces

Clinical Disorders

  • Factor V deficiency causes bleeding tendencies
  • Factor V Leiden mutation increases thrombosis risk
  • 5% of Caucasians carry Leiden mutation

Diagnostic and Treatment Approaches

  • Diagnosed through molecular and activity tests
  • Treatment includes plasma transfusions
  • Anticoagulation therapy for thrombotic risks
  • Ongoing research into personalized genetic therapies
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