First described in 1948, Bernard-Soulier syndrome is an uncommon hereditary thrombopathy characterized by abnormal expression of the GPIb-IX-V complex which inhibits platelet migration to the site of endothelial trauma. Our case illustrates the pathophysiological mechanisms involved and points out the similarity with idiopathic thrombopenic purpura.
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Transfus Clin Biol
September 2018
Université de Strasbourg, Inserm, EFS Grand-Est, BPPS UMR-S1255, FMTS, 67000 Strasbourg, France. Electronic address:
Inherited platelet disorders are rare bleeding syndromes due to either platelet function abnormalities or thrombocytopenia which may be associated with functional defects. The haemorrhagic symptoms observed in these patients are mostly muco-cutaneous and of highly variable severity. Although 30 to 50% of the platelet disorders are still of unknown origin, the precise diagnosis of these pathologies by specialized laboratories together with haemorrhagic scores enables an assessment of the risk of bleeding in each patient.
View Article and Find Full Text PDFEur J Pediatr
December 2007
Center for Molecular and Vascular Biology, University of Leuven, Herestraat 49, 3000 Leuven, Belgium.
This review on platelet research focuses on defects of adhesion, cytoskeletal organisation, signal transduction and secretion. Platelet defects can be studied by different laboratory platelet functional assays and morphological studies. Easy bruising or a suspected platelet-based bleeding disorder is of course the most obvious reason to test the platelet function in a patient.
View Article and Find Full Text PDFCurr Opin Hematol
May 2004
Synapse BV, Cardiovascular Research Institute, 6200 MD Maastricht, The Netherlands.
Purpose Of Review: After decades of near oblivion, thrombin generation is being revived as an overall function test of the plasmatic coagulation system in platelet-poor plasma (PPP). In platelet-rich plasma (PRP) it assesses platelet procoagulant functions as well.
Recent Findings: The recently developed use of special fluorogenic thrombin substrates allows monitoring of thrombin concentration in clotting PPP and PRP on line in up to 24 parallel samples.
Platelets
September 2003
Institute of Immunohaematology, (ICMR), KEM Hospital, Parel, Mumbai, India.
Four hundred and ninety seven patients were referred to our center for platelet aggregation studies because of spontaneous mucocutaneous bleeds. All these patients had normal complete blood count, platelet count and peripheral smears except in ten patients of Bernard Soulier Syndrome where platelet count was marginally reduced in the presence of giant platelets. Two hundred and eighty patients were found to have normal platelet aggregation to ADP, collagen, ristocetin and arachidonic acid.
View Article and Find Full Text PDFAnn Med Interne (Paris)
September 2002
Service de Médecine Interne A, Hôpital Max-Fourestier, 403, avenue de la République, 92000 Nanterre, France.
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