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Case report | 14-October-2020

Neonatal alloimmune thrombocytopenia due to HPA-3a antibodies: a case report

commerical antigencapture ELISA (GTI-PakPlus kit®). Anti-HPA-3a antibodies, while weakly reactive in the monoclonal antibody immobilization of platelet antigens (MAIPA) assay in the immediate postpartum serum, were readily detectable using this assay in a sample taken 4 weeks later. Genotyping for human platelet antigens (HPA) 1–5 by the polymerase chain reaction technique with sequence-specific primers (PCR-SSP) revealed the infant’s platelet genotype to be HPA-1a/1a, 3a/3b, while that

A. Davoren, G. Smith, G. Lucas, S. Rodgers, P. O’Donoghue, J. Crowley, C.A. Barnes, J. McKiernan

Immunohematology, Volume 18 , ISSUE 2, 33–36

Article | 14-October-2020

Neonatal alloimmune thrombocytopenia due to anti-HPA-2b (anti-Koa)

; 109/L, and Hb was 116 g/L. Eleven mL of matched platelets compatible by monoclonal antibody immobilization of platelet antigens (MAIPA) assay were transfused in utero, raising the platelet count to 62 × 109/L. Repeat transfusions were done later that week and 1 week later, with pretransfusion counts of 19 × 109/L and 16 × 109/L, respectively. Delivery by C section was done at 35.5 weeks, after the third platelet transfusion. Platelet count at birth was 77 × 109/L. Drainage

Mindy Goldman, Élise Trudel, Samir Khalife, Gwendoline M. Spurll

Immunohematology, Volume 19 , ISSUE 2, 43–46

Article | 09-November-2020

Semiautomation of platelet HPA-1a phenotyping by SPRCA and ELISA

samples, 13 were identified as HPA-1a negative. A further 36 known donor HPA-1a negative samples were correctly typed by both methods. Concordant results were obtained for the ELISA and SPRCA. All presumed HPA-1a negatives were confirmed by either polymerase chain reaction using sequence-specific primers (PCR-SSP) or by monoclonal antibody-specific immobilization of platelet antigens (MAIPA). The two semiautomated systems provide simple, accurate, reproducible, and secure ways for large scale HPA-1a

Lionel A. Mohabir, Lynne Porter

Immunohematology, Volume 13 , ISSUE 2, 44–48

Article | 27-April-2020

Is there a relationship between anti-HPA-1a concentration and severity of neonatal alloimmune thrombocytopenia?

concentration and severity of NAIT when ELISA is used, although the correlation between ELISA and other methods, such as monoclonal antibody immobilization of platelet antigens (MAIPA) assay, remains to be determined.

Hagop Bessos, Marc L. Turner, Stanislaw J. Urbaniak

Immunohematology, Volume 21 , ISSUE 3, 102–108

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