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Updated: Jun 18, 2026

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
Factor V Leiden and activated protein C resistance
Olivier Segers1, Elisabetta Castoldi
1Department of Biochemistry, Maastricht University, Maastricht, The Netherlands.
Activated protein C (APC) resistance, linked to the FV Leiden mutation, is a major risk factor for venous thrombosis. This review covers APC pathway research, resistance mechanisms, and clinical significance.
Area of Science:
- Biochemistry
- Hematology
- Genetics
Background:
- Activated protein C (APC) is a key anticoagulant enzyme.
- APC inactivates coagulation factors Va and VIIIa, regulating thrombin generation.
- Deficiencies in protein C or S cause severe thrombotic disorders.
Purpose of the Study:
- To review the protein C pathway and APC resistance.
- To summarize current knowledge on FV Leiden mutation and its impact.
- To discuss the clinical significance and ongoing research in APC resistance.
Main Methods:
- Literature review of studies on APC, protein C pathway, and thrombosis.
- Analysis of genetic and molecular mechanisms of APC resistance.
- Evaluation of clinical data linking APC resistance to venous thrombosis.
Main Results:
- APC resistance is a significant risk factor for venous thrombosis.
- The FV Arg506Gln mutation (FV Leiden) is the most common cause of APC resistance.
- Understanding APC resistance has advanced knowledge of coagulation and thrombosis.
Conclusions:
- APC resistance, particularly FV Leiden, is crucial in thrombosis pathogenesis.
- Further research continues to elucidate the protein C pathway and its clinical implications.
- This review provides a comprehensive overview of APC resistance research.
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