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Upshaw–Schulman syndrome (USS) is the recessively inherited form of thrombotic thrombocytopenic purpura (TTP), a rare and complex blood coagulation disease. USS is caused by the absence of the ADAMTS13 protease resulting in the persistence of ultra large von Willebrand factor multimers (ULVWF), causing episodes of acute thrombotic microangiopathy with disseminated multiple small vessel obstructions. These obstructions deprive downstream tissues from blood and oxygen, which can result in tissue damage and death. The presentation of an acute USS episode is variable but usually associated with thrombocytopenia, microangiopathic hemolytic anemia (MAHA) with schistocytes on the peripheral blood smear, fever and signs of ischemic organ damage in the brain, kidney and heart.

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  • متلازمة أبشاو شولمان (ar)
  • Upshaw-Schulman-Syndrom (de)
  • Upshaw–Schulman syndrome (en)
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  • متلازمة أبشاو شولمان (يو إس إس)، شكل وراثي متنحي من فرفرية نقص الصفيحات الخثرية (تي تي بّي)، وهو اضطراب تخثر دموي نادر ومعقد. تنتج متلازمة أبشاو شولمان عن غياب إنزيم بروتياز ADAMTS13 ما يؤدي إلى بقاء عامل فون ويلبراند عديد الجزيء الضخم في الدوران، ويتسبب بدوره في نوبات من اعتلال الأوعية الدقيقة التخثري الحاد وانسداد العديد من الأوعية الصغيرة. تحرم هذه الانسدادات الأنسجة من الدم والأكسجين، ما يؤدي إلى تلف الأنسجة وموتها. تتنوع مظاهر نوبة متلازمة أبشاو شولمان الحادة، لكنها تترافق عادةً مع قلة الصفيحات، وفقر الدم الانحلالي باعتلال الأوعية الدقيقة المترافق بظهور الكريات المنفلقة على محيط اللطاخة الدموية، والحمى وعلامات تلف العضو الإقفاري في الدماغ والكلية والقلب. (ar)
  • Upshaw–Schulman syndrome (USS) is the recessively inherited form of thrombotic thrombocytopenic purpura (TTP), a rare and complex blood coagulation disease. USS is caused by the absence of the ADAMTS13 protease resulting in the persistence of ultra large von Willebrand factor multimers (ULVWF), causing episodes of acute thrombotic microangiopathy with disseminated multiple small vessel obstructions. These obstructions deprive downstream tissues from blood and oxygen, which can result in tissue damage and death. The presentation of an acute USS episode is variable but usually associated with thrombocytopenia, microangiopathic hemolytic anemia (MAHA) with schistocytes on the peripheral blood smear, fever and signs of ischemic organ damage in the brain, kidney and heart. (en)
  • Das Upshaw-Schulman-Syndrom (USS) ist eine seltene Blutgerinnungskrankheit und wurde nach den Medizinern (1929–2008) und (* 1941) benannt. Es entspricht der vererbten Form der thrombotisch thrombozytopenischen Purpura (TTP). Patienten mit USS haben zu wenig ADAMTS13-Protease, dadurch bleiben die Multimere des ultralangen Von-Willebrand-Faktors (ULVWF) im Blut bestehen, welches eine thrombotische Mikroangiopathie mit Gefäßverschlüssen in den kleinen Blutgefäßen auslöst. Diese Gefäßverschlüsse verhindern eine genügende Durchblutung des dahinter liegenden Gewebes, welches infolgedessen geschädigt wird. Die Symptome bei akutem USS sind sehr variabel, meistens besteht eine thrombozytopenische mikroangiopathische hämolytische Anämie (MAHA) mit Schistozyten im Blutausstrich, Fieber und ischämis (de)
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  • Upshaw–Schulman syndrome (en)
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  • Upshaw–Schulman syndrome (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Dr._Jefferson_D._Upshaw.jpg
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