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Reciprocal HLA-DR allogenicity between mother and child affects pregnancy outcome parameters
M H C Craenmehr1, A van Egmond2, G W Haasnoot1
1Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands.
Abstract:
Successful pregnancy outcome depends on local immunoregulatory mechanisms preventing a detrimental immune response towards the semi-allogeneic fetus. We investigated the influence of HLA-DR (in)compatibility on pregnancy outcome parameters in 480 women. The parameters tested were birth weight, individualized birthweight ratio (IBR), gestational age, and maternal highest diastolic blood pressure. Irrespective of pregnancy complications, maternal-fetal HLA-DR incompatibility resulted in increased IBR. We conclude that reciprocal HLA-DR allogenicity between mother and child positively affect pregnancy outcome parameters.
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