1. Multirefractory primary immune thrombocytopenia; targeting the decreased sialic acid content
- Author
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Revilla N, Corral J, Miñano A, Mingot-Castellano ME, Campos RM, Velasco F, Gonzalez N, Galvez E, Berrueco R, Fuentes I, Gonzalez-Lopez TJ, de la Morena-Barrio ME, Gonzalez-Porras JR, Vicente V, and Lozano ML
- Subjects
oseltamivir ,sialic acid ,platelet activation ,Anti-GPIba ,multirefractory ITP - Abstract
Patients with multirefractory immune thrombocytopenia (ITP) have limited treatment options. Recent data suggest that specific anti-platelet antibodies may cause destruction of platelets by favoring platelet loss of sialic acid. In this multicenter study 35 patients with ITP, including 16 with multirefractory disease, were analyzed for antiplatelet-antibodies, thrombopoietin (TPO) levels, and platelet desialylation. In selected cases, responses to a novel treatment strategy using oseltamivir were tested. We found that antibodies against GPIba were overrepresented in multirefractory patients compared to responders (n = 19). In contrast to conventional ITP patients, multirefractory patients exhibited a significant increased platelet activation state (granule secretion) and desialylation (RCA-1 binding) (p
- Published
- 2019