AIMS: To determine to what extent the Arg506 to Gln point mutation in the factor V gene and further genetic factors of thrombophilia affect the risk of porencephaly in neonates and infants. METHODS: The Arg506 to Gln mutation, factor V, protein C, protein S, antithrombin, antiphospholipid antibodies and lipoprotein (a) (Lp(a)) were retrospectively measured in neonates and children with porencephaly (n = 24). RESULTS: Genetic risk factors for thrombophilia were diagnosed in 16 of these 24 patients: heterozygous factor V Leiden (n = 3); protein C deficiency type I (n = 6); increased Lp (a) (n = 3); and protein S type I deficiency (n = 1). Three of the 16 infants had two genetic risk factors of thrombophilia: factor V Leiden mutation combined with increased familial Lp (a) was found in two, and factor V Leiden mutation with protein S deficiency type I in one. CONCLUSIONS: The findings indicate that deficiencies in the protein C anticoagulant pathway have an important role in the aetiology of congenital porencephaly.
AIMS: To determine to what extent the Arg506 to Gln point mutation in the factor V gene and further genetic factors of thrombophilia affect the risk of porencephaly in neonates and infants. METHODS: The Arg506 to Gln mutation, factor V, protein C, protein S, antithrombin, antiphospholipid antibodies and lipoprotein (a) (Lp(a)) were retrospectively measured in neonates and children with porencephaly (n = 24). RESULTS: Genetic risk factors for thrombophilia were diagnosed in 16 of these 24 patients: heterozygous factor V Leiden (n = 3); protein C deficiency type I (n = 6); increased Lp (a) (n = 3); and protein S type I deficiency (n = 1). Three of the 16 infants had two genetic risk factors of thrombophilia: factor V Leiden mutation combined with increased familial Lp (a) was found in two, and factor V Leiden mutation with protein S deficiency type I in one. CONCLUSIONS: The findings indicate that deficiencies in the protein C anticoagulant pathway have an important role in the aetiology of congenital porencephaly.
Authors: R M Bertina; B P Koeleman; T Koster; F R Rosendaal; R J Dirven; H de Ronde; P A van der Velden; P H Reitsma Journal: Nature Date: 1994-05-05 Impact factor: 49.962
Authors: M Margaglione; G DiMinno; E Grandone; E Celentano; G Vecchione; G Cappucci; M Grilli; F P Mancini; A Postiglione; S Panico; M Mancini Journal: Arterioscler Thromb Vasc Biol Date: 1996-01 Impact factor: 8.311
Authors: G Breedveld; I F de Coo; M H Lequin; W F M Arts; P Heutink; D B Gould; S W M John; B Oostra; G M S Mancini Journal: J Med Genet Date: 2005-08-17 Impact factor: 6.318