HLA-DRB3*01:01 exhibits a dose-dependent impact on HPA-1a antibody levels in HPA-1a–immunized women

Inhibition of HPA-1a alloantibody-mediated platelet destruction by a deglycosylated anti-HPA-1a monoclonal antibody in mice: toward targeted treatment of fetal-alloimmune thrombocytopenia.

Fetal/neonatal alloimmune thrombocytopenia (FNAIT) is often caused by maternal alloantibodies against the human platelet antigen (HPA)-1a, which opsonizes fetal platelets (PLTs). Subsequent PLT destruction is mediated via the Fc part of the alloantibodies. The monoclonal antibody (mAb) SZ21 binds to the HPA-1a epitope and inhibits the binding of maternal alloantibodies. However, it also promote...

Inhibition of HPA-1a alloantibody-mediated platelet destruction by a deglycosylated anti-HPA-1a monoclonal antibody: towards targeted treatment of fetal-alloimmune thrombocytopenia

HPA-1a phenotype-genotype discrepancy reveals a naturally occurring Arg93Gln substitution in the platelet beta 3 integrin that disrupts the HPA-1a epitope.

A single nucleotide polymorphism (SNP) at position 196 in the beta 3 integrin causes a Leu33Pro substitution in the mature protein. Alloimmunization against the beta 3Leu33 form (human platelet antigen [HPA]-1a, Pl(A1), Zw(a)) in patients who are beta 3Pro33 homozygous (HPA-1b1b, Pl(A2A2), Zw(bb)) causes neonatal alloimmune thrombocytopenia, posttransfusion purpura, or refractoriness to platele...

فراوانی آنتی‌ژن‌های پلاکتی در اهداکنندگان خون: مقایسه روش مولکولی با روش الیزا( برای HPA-1a)

  چکید ه   سابقه و هدف   روش‌های سرولوژیکی جهت تعیین نوع آنتی‌ژن‌های پلاکتی به دلیل محدودیت دسترسی به منابع آنتی‌سرم‌های اختصاصی و تعداد ناکافی پلاکت در بیماران مبتلا به ترمبوسیتوپنی محدود شده است. بنابراین از روش‌های مولکولی و بر پایه DNA جهت تعیین ژنوتیپ‌ آنتی‌ژن‌های پلاکتی استفاده می‌شود. از آن جا که در مورد میزان شیوع این آنتی‌ژن‌ها در جمعیت ایران اطلاعات چندانی در دسترس نیست لذا هدف مطالعه...

HPA* Enhancements

In video games, pathfinding must be done quickly and accurately. Not much computational time is allowed for pathfinding, but realistic looking paths are required. One approach to pathfinding which attempts to satisfy both of these constraints is to perform pathfinding on abstractions of the map. Botea et al.’s Hierarchical Pathfinding A* (HPA*) does this by dividing the map into square sectors ...