Pawinee Kupatawintu. Distribution of human platelet antigens in Thai blood donors using simultaneous PCR-SSP technique . Master's Degree(Medical Technology). Mahidol University. : Mahidol University, 2004.
Distribution of human platelet antigens in Thai blood donors using simultaneous PCR-SSP technique
Abstract:
Human platelet alloantigens (HPA) are important in fetomaternal
alloimmune thrombocytopenia (FMAIT), post transfusion purpura (PTP), platelet
transfusion refractoriness, passive alloimmune thrombocytopenia and
transplantation-associated alloimmune thrombocytopenia. Thus, HPA genotyping is
essential in patient diagnosis and treatment. In this study, HPA-1 to 6 and Gov alleles
were analyzed using PCR with sequence specific primers (PCR-SSP) in 500 Thai
blood donors, who have been HLA class I antigen-typed. It was found that HPA-4a
was present in all samples. HPA-1b, -2b,_-5b and -6b were rare and HPA-4b was not
found. HPA-3a and -3b showed frequencies of 56.0% and 44.0%, respectively. In
addition, for the Gov system, Gova and Govb showed frequencies of 49.1 % and
50.9%, respectively. The prevalence rates of HPA-1 to 6 and Gov gene frequencies
(GFs) were consistent with those of other Asian populations rather than those of
Caucasians. The results established a useful HPA and HLA-matched plateletpheresis
donor file and provided an improvement in platelet alloantibody detection in
alloimmune thrombocytopenic patients, and therefore, a more effective platelet
transfusion program.