Thrombotic microangiopathy in patients with phosphatidylserine dependent antiprothrombin antibodies and antiphospholipid syndrome.
Clin Exp Rheumatol
; 26(1): 129-32, 2008.
Article
en En
| MEDLINE
| ID: mdl-18328160
ABSTRACT
Thrombotic microangiopathy (TMA) is a rare disorder characterized by microvascular thrombosis. TMA has been reported in patients with antiphospholipid antibodies and/or antiphospholipid syndrome but its pathogenesis is not clarified. We present two patients with TMA associated with IgG phosphatidylserine dependent antiprothrombin antibodies (aPS/PT). CASE 1 A 44-year-old Japanese female with systemic lupus erythematosus (SLE) and positive lupus anticoagulant (LA) was started on ticlopidine after having stroke. Four weeks later she developed TMA. IgG/M/A anticardiolipin antibodies (aCL) were negative, but strong positive IgG aPS/PT were detected. CASE 2 A 32-year-old Russian female with SLE was admitted because of hypertension, renal insufficiency and proteinuria at 14 weeks of pregnancy. She developed TMA after surgical abortion. IgG aPS/PT and LA were strongly positive but IgG/M/A aCL were negative. Neither case had von Willebrand factor cleaving protease (ADAMTS-13), suggesting that TMA in those patients was associated with thrombophilia rather than insufficient ADAMTS-13. Both patients were successfully treated with a series of plasma exchange.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Fosfatidilserinas
/
Autoanticuerpos
/
Trombosis
/
Enfermedades Vasculares
/
Síndrome Antifosfolípido
Límite:
Adult
/
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
Clin Exp Rheumatol
Año:
2008
Tipo del documento:
Article
País de afiliación:
Japón