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Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
Hyperhomocysteinaemia and factor V Leiden mutation are associated with Budd-Chiari syndrome
Yusuf Colak1, Zeki Karasu, Nevin Oruc
1Department of Gastroenterology, Ege University Medical School, Izmir, Turkey.
Insights
Hyperhomocysteinaemia and factor V Leiden mutation are significant risk factors for Budd-Chiari syndrome (BCS). Elevated homocysteine levels, particularly with the factor V Leiden mutation, increase BCS development risk.
Area of Science:
- Hepatology
- Thrombosis
- Genetics
Background:
- Budd-Chiari syndrome (BCS) involves hepatic venous outflow obstruction, often linked to prothrombotic conditions.
- Investigating genetic and metabolic factors is crucial for understanding BCS pathogenesis.
Purpose of the Study:
- To assess the role of hyperhomocysteinaemia, factor V Leiden mutation, and G20210A prothrombin gene mutation in Budd-Chiari syndrome.
- To determine the association between these factors and BCS development.
Main Methods:
- Study included 32 BCS patients and 33 healthy controls, matched for age and sex.
- Factor V Leiden and prothrombin gene mutations analyzed via DNA from peripheral mononuclear cells.
- Plasma homocysteine levels measured using fluorescence polarization immunoassay.
Main Results:
- Factor V Leiden mutation frequency was significantly higher in BCS patients (20.3%) than controls (7.6%).
- BCS patients exhibited significantly higher plasma homocysteine levels compared to controls (16.4 vs 11.0 micromol/l).
- Patients with the factor V Leiden mutation showed elevated homocysteine levels (22.1 vs 14.4 micromol/l).
Conclusions:
- Hyperhomocysteinaemia is a significant risk factor for Budd-Chiari syndrome.
- The presence of the factor V Leiden mutation exacerbates this risk, especially when combined with high homocysteine levels.
- These findings highlight the importance of screening for hyperhomocysteinaemia and factor V Leiden mutation in BCS patients.
Objectives:
Budd-Chiari syndrome (BCS) is characterized by hepatic venous outflow obstruction and may be caused by various prothrombotic disorders. We aimed to study the role of hyperhomocysteinaemia, factor V Leiden mutation and G20210A prothrombin gene mutation in the pathogenesis of the syndrome.
Methods:
Thirty-two patients (16 male, 16 female, aged 19-45 years) with angiographically verified BCS and 33 age-matched and sex-matched voluntary healthy controls (15 male, 18 female, aged 19-45 years) were included into the study. Factor V Leiden and prothrombin gene mutations were determined in extracted DNA from peripheric mononuclear cells, using a light cycler amplification system. Plasma homocysteine levels were measured by fluorescence polarization immunoassay.
Results:
The homozygote factor V Leiden mutation was diagnosed in four BCS patients and the heterozygote mutation was diagnosed in five. The frequency of the mutant allele was 20.3% in BCS patients and 7.6% in the controls (P < 0.05). There was no significant difference in prothrombin gene mutation frequency between the two groups. Serum homocysteine levels were significantly higher in the BCS group than in the controls (16.4 +/- 8.8 vs 11.0 +/- 2.7 micromol/l; P < 0.01). BCS patients with the mutant factor V Leiden allele have significantly higher levels of serum homocysteine (22.1 +/- 13.3 vs 14.4 +/- 5.9 mumol/l; P < 0.05).
Conclusions:
Hyperhomocysteinaemia, especially when associated with the factor V Leiden mutation, is an important risk factor for the development of BCS.
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