Genetic characterization of patients with Bernard-Soulier syndrome and their relatives from Southern Iran
Articolo
Data di Pubblicazione:
2007
Citazione:
Genetic characterization of patients with Bernard-Soulier syndrome and their relatives from Southern Iran / A. Afrasiabi, A. Lecchi, A. Artoni, M. Karimi, E. Ashouri, F. Peyvandi, P.M. Mannucci. - In: PLATELETS. - ISSN 0953-7104. - 18:6(2007 Sep), pp. 409-413.
Abstract:
Bernard-Soulier syndrome (BSS) is a rare recessively inherited bleeding disorder caused by the deficiency of the platelet glycoprotein (Gp) complex Ib/IX/V that is the von Willebrand factor receptor on platelets. In patients suffering from BSS platelet adhesion is typically impaired, while platelet aggregation is normal; macrothrombocytopenia is a common feature. In this study three different families from Southern Iran were investigated. GpIb/IX/V platelet expression as detected by flow cytometry was less than 2% of normal in six cases and 12% in the remaining one. Platelet count was 35,000 platelets/microliter and iron deficiency anemia was common. All patients suffered from mucocutaneous bleeding at presentation and were born from consanguineous marriages. Genetic analysis demonstrated the presence of the same GpIX Phe55Ser missense mutation in two families and of a single base insertion (GP1BA C3221 ins), a never described mutation causing a frameshift in the GpIbalpha gene, in the third family. Among the family members studied several heterozygotes were identified. None of them, with one exception, had macrothrombocytopenia. In one family a slight reduction of GpIb/IX/V expression was observed
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Bernard-Soulier syndrome; Genetic analysis; Heterozygous carrier
Elenco autori:
A. Afrasiabi, A. Lecchi, A. Artoni, M. Karimi, E. Ashouri, F. Peyvandi, P.M. Mannucci
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