Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/194623
Type: Artigo de periódico
Title: The Impact Of The Search For Thrombophilia Risk Factors Among Antiphospholipid Syndrome Patients With Thrombosis.
Author: Torresan, M
Machado, T F
Siqueira, L H
Ozelo, M C
Arruda, V R
Annichino-Bizzacchi, J M
Abstract: Thrombosis is a major clinical feature of the antiphospholipid syndrome. Interactions between genetic and acquired factors could contribute to thrombosis development. In this study, we evaluated 40 patients with antiphospholipid syndrome and thrombosis, 31 primary and nine secondary to systemic lupus erythemathosus, to estimate the carrier rates of factor V Leiden, 20210A --> G prothrombin variant and 677C --> T in the MTHFR gene. Protein C, protein S and antithrombin were measured in 30 patients, with a median of 100.66 +/- 23.86, 93.57 +/- 36.44 and 98.8 +/- 5.67%, respectively. None of the patients were deficient on these natural anticoagulants. No significant variation was found between the patient group and the controls, regarding the prevalence of homozygotes for the mutated 677T allele (2.5 versus 5.4%), or heterozygotes for factor V Leiden (0 versus 0.7%). Despite the fact that these mutations are relatively common in Brazilian thrombophilic patients, its low prevalence in this cohort of patients suggest that these genetic alterations are not risk factors for thrombosis in antiphospholipid syndrome. The prevalence of the mutated allele 20210A of the prothrombin gene was higher in patients when compared with controls (5 versus 0.7%; P = 0.01), suggesting that prothrombin variant could increase the risk of thrombosis in patients with antiphospholipid syndrome.
Subject: Adolescent
Adult
Aged
Antiphospholipid Syndrome
Brazil
Cross-sectional Studies
Female
Humans
Infant, Newborn
Male
Middle Aged
Prevalence
Risk Factors
Thrombophilia
Thrombosis
Rights: fechado
Identifier DOI: 
Address: http://www.ncbi.nlm.nih.gov/pubmed/11085290
Date Issue: 2000
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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