期刊
TRANSFUSION MEDICINE
卷 19, 期 5, 页码 269-273出版社
WILEY
DOI: 10.1111/j.1365-3148.2009.00940.x
关键词
alloimmunization; genetic diversity; human platelets antigens; neonatal alloimmune thrombocytopenia; Tunisia
类别
资金
- Franco-Tunisian Cooperation
Pregnancy may allow alloimmunization against human platelet antigens (HPA), which can lead to neonatal alloimmune thrombocytopenia (NAIT). The specificities of alloantibodies are closely related to the distribution of the HPA systems. A total of 281 Tunisian multiparous women (mean number of pregnancies: 4.5) were phenotyped for the HPA-1, -3 and -5 systems, by monoclonal antibody immobilization of platelet antigens (MAIPA). We searched for antibodies against HPA-1a, HPA-3a, HPA-5b and HPA-5a in HPA-1b1b, HPA-3b3b, HPA-5a5a and HPA-5b5b individuals, respectively. The gene frequencies were: 0 center dot 83 for HPA-1a, 0 center dot 17 for HPA-1b, 0 center dot 78 for HPA-3a, 0 center dot 22 for HPA-3b, 0 center dot 82 for HPA-5a and 0 center dot 18 for HPA-5b. Anti-HPA-5b antibodies were present in eight sera and anti-HPA-3a antibodies were present in one serum. The anti-HPA-5b system is the most frequently involved in platelet alloimmunization in Tunisian multiparous women. However, prospective trials are required to confirm this result and to determine the exact frequencies and clinical relevance of platelet alloantibodies in pregnant Tunisian women.
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