[Genotyping applied to platelet immunology: when? How? Limits].

Abstract

Platelet alloantigens named Human Platelet Antigens (HPA) are involved in immune conflicts such as post-transfusion purpura, platelet transfusion refractoriness and neonatal alloimmune thrombocytopenia. Biological diagnosis relies on: (1) detection of alloantibodies; (2) identification of the alloantigen involved in the immune conflict. Since the development of methods based on molecular biology, platelet genotyping is preferred to phenotyping. Today, most of the Platelet Immunology Units use PCR-RFLP or PCR-SSP, and few use real-time PCR. An increasing amount of commercial kits based on new technologies is now available, for example microarrays, fluorescent or coloured microbeads, or a combination of both technologies. However, an increasing number of polymorphisms have been discovered that are responsible for erroneous platelet genotypings. Consequently, it would be of interest to develop alternative technologies based on antigen/antibody interaction instead of DNA.

• Authors: G Bertrand, C Kaplan
• Journal: Transfusion clinique et biologique : journal de la Societe francaise de transfusion sanguine (Transfus Clin Biol) Vol. 16 Issue 2 Pg. 164-9 (May 2009) ISSN: 1246-7820 [Print] France
• Vernacular Title: Génotypage en immunologie plaquettaire: quand? Comment? Limites.
• PMID: 19409829 (Publication Type: Journal Article)

Chemical References

• Antigens, Human Platelet

Topics

• Antigen-Antibody Reactions
• Antigens, Human Platelet (analysis)
• Blood Coagulation Disorders (diagnosis)
• Blood Platelets (immunology)
• Humans
• Polymerase Chain Reaction
• Polymorphism, Restriction Fragment Length
• Purpura (etiology)
• Transfusion Reaction