Homocysteine levels and polymorphisms of MTHFR and CBS genes in Colombian patients with superficial and deep venous thrombosis

Claudia Ayala, Reggie García, Edith Cruz, Karol Prieto, Marta Bermúdez, .

Keywords: homocysteine, polymorphism, genetic, hyperhomocysteinemia, thrombosis, atherosclerosis, cystathionine beta-synthase

Abstract

Introduction. Thrombosis develops when the hemostatic system is incorrectly activated due to the unbalance between procoagulant, anticoagulant and fibrinolytic mechanisms allowing the formation of a clot within a blood vessel. The risk factors of this pathology can be acquired or can be genetic.
Objectives. To analyze in a Colombian population with diagnosis of venous thrombosis, lipid profile, glucose and homocystein levels, to calculate the alleles and genotypic frequencies of polymorphisms c.699 C>T, c.1080 C>T, c.844ins68 of the cystathionine ß synthase and the c.677 C>T of the methylenetetrahydrofolate reductase (MTHFR) genes.
Materials and methods. Thirty three patients and their controls were studied. The biochemical test was carried out by colorimetric methods and immunoassay. In this survey we used the restriction fragments longitude polymorphism (RLFP) technique to identify the polymorphisms mentioned. The association study was performed through the chi square test.
Results. We confirmed that gene alterations increase risk for pathology; we found statistically significant differences in the group with hypercholesterolemia in presence of the polymorphism c.699 C>T in the CBS gene, showing a protective effect in the individuals carrying this genetic variation. Likewise, we found a statistical trend for an eventual protective effect of the CBS c.844ins68 polymorphism to venous thrombotic disease.
Conclusions. There were not any statistically significant differences in homocystein levels between cases and controls; nevertheless, the variability in the plasma concentrations was greater in the group of cases.

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  • Claudia Ayala Instituto de Genética Humana, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
  • Reggie García Instituto de Genética Humana, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
  • Edith Cruz Universidad Colegio Mayor de Cundinamarca, Bogotá, D.C., Colombia
  • Karol Prieto Instituto de Genética Humana, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
  • Marta Bermúdez Instituto de Genética Humana, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia Universidad Colegio Mayor de Cundinamarca, Bogotá, D.C., Colombia

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How to Cite
1.
Ayala C, García R, Cruz E, Prieto K, Bermúdez M. Homocysteine levels and polymorphisms of MTHFR and CBS genes in Colombian patients with superficial and deep venous thrombosis. biomedica [Internet]. 2010 Aug. 4 [cited 2024 May 16];30(2):259-67. Available from: https://revistabiomedica.org/index.php/biomedica/article/view/189

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