Abstract:
:Neonatal alloimmune thrombocytopenia (NAIT) is usually induced by platelet-specific antibodies against HPA-1a (Zwa) or HPA-5b (Bra). Recently, low-frequency alloantigens on the platelet glycoprotein (GP) IIb/IIIa complex have been discovered as a cause for NAIT. In this report, a new low-frequency platelet-specific alloantigen, Iy, is described which induced severe NAIT. The corresponding antigen was detected in 1/249 unrelated German blood donors. Antibody binding assays with trypsin-digested platelets (ELISA, immunoprecipitation with biotin-labelled platelets) indicate that the antigen is not localized on the glycocalicin moiety of GP Ib alpha, but may be situated on the remnant moiety of GP Ib alpha, GP IX or GPIb beta. Apparently, Iy is not related to the HPA-2 (Ko) antigen system.
journal_name
Vox Sangjournal_title
Vox sanguinisauthors
Kiefel V,Vicariot M,Giovangrandi Y,Kroll H,Böhringer M,Greinacher A,Breitfeld C,Santoso S,Mueller-Eckhardt Cdoi
10.1111/j.1423-0410.1995.tb02604.xsubject
Has Abstractpub_date
1995-01-01 00:00:00pages
250-4issue
3eissn
0042-9007issn
1423-0410journal_volume
69pub_type
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