Affiliation:
1. Department of Clinical Studies Ontario Veterinary College, University of Guelph Guelph Ontario Canada
2. Smith Lane Animal Hospital Ontario Veterinary College, University of Guelph Guelph Ontario Canada
Abstract
AbstractBernard–Soulier syndrome (BSS), also known as hemorrhagiparous thrombocytic dystrophy (OMIA 002207–9615), is a rare defect in platelet function recognized in both dogs and humans. It is caused by a deficiency in glycoprotein 1b‐IX‐V, the platelet surface protein which acts as a receptor for the von Willebrand factor. The characteristic features of BSS in humans and dogs include macrothrombocytes and mild‐to‐moderate thrombocytopenia with a bleeding tendency. This condition has previously been reported in European Cocker Spaniel dogs; however, the results of platelet function tests in these animals have not been reported. This case report describes a European Cocker Spaniel dog with spontaneously occurring Bernard–Soulier syndrome and the results of point‐of‐care platelet function tests, including a prolonged buccal mucosal bleeding time (>8 min), prolongation (>300 s) of PFA‐200 COL/ADP, COL/EPI, and P2Y closure times, and reduced aggregation (15%–48%) with Plateletworks ADP, but with normal aggregation (92%) with Plateletworks AA. This is the first description of the results of platelet function tests in canine Bernard–Soulier syndrome.