Platelet antigens and antibodies in multitransfused patients

Evaluation of platelet antigens and antibodies in patients with platelet refractoriness

Abstract Background and Objectives Immune platelet refractoriness is a complication of blood transfusion in patients with multiple platelet transfusions. Antibodies against surface antigens, including human platelet antigens (HPAs) and human leukocyte antigens (HLAs), can be produced which can cause the degradation of transfused platelets by macrophages. In this study, the frequency of platele...

Platelet antigens and antibodies in pregnancy

Human platelet antigens polymorphisms: Association to primary immune thrombocytopenia in the Iranian patients

Background: Human platelet antigens (HPAs) are part of platelet GP complexes have the potential to contribute to the autoantibody production. Moreover, these antigens demonstrate different patterns of distribution on different ethnic groups and variation in some types of diseases. This study was objected to determine the incidence of HPA-1 to -5 and -15 polymorphisms in the Iranians suffering f...

Incidence and specificity of HLA antibodies in multitransfused patients with acquired aplastic anemia.

BACKGROUND This study aimed to establish the prevalence and characteristics of anti-HLA in antibody acquired aplastic anemia patients following cessation of antithymocyte globulin therapy and to characterize antibody in terms of epitope specificity. STUDY DESIGN AND METHODS One hundred and fifty multitransfused, untransplanted patients from eight European centers were investigated by serologi...

Effective prophylaxis against platelet refractoriness in multitransfused patients by use of leukocyte-free blood components.

Development of permanent platelet refractoriness is a major problem in multitransfused patients with diseases such as leukemia, aplastic anemia, or pediatric solid tumors. We tried to prevent alloimmunization in these patients by systematic use of leukocyte-free blood components with less than one million of contaminating leukocytes per unit of platelets or red cells. Our study group comprised ...

Preparation and Purification of Polyclonal Antibodies against Mycobacterium Avium Paratuberculosis Antigens in Rabbit

Background and Objective: Johne’s disease is the chronic granulomatous enteritis of ruminants, and a major health hazard worldwide. In recent years, researchers have focused on mycobacterium avium subsp. paratuberculosis (MAP) antigens in diagnostic tests. Identification of antibodies against MAP antigens is, therefore, effective for the diagnosis or preparation of vaccine. The aim of this stud...