Histocompatibility Antigens. Structure and Function

Frequency of Major Histocompatibility Antigens Class I in Mazandaran Province

 Background and purpose: Major histocompatibility antigens are the most polymorphic components of the immune system. The purpose of this study was to determine the frequency of human leukocyte antigens (HLA) in a population in Mazandaran province, Iran. Materials and methods: In a cross sectional study, peripheral blood samples were obtained from 550 people in Immunogenetics Research Center af...

Transplantation Antigens and Histocompatibility Matching

Minor histocompatibility antigens.

ISTOCOMPATIBILITY antigens are a group of cell H membrane alloantigens that can trigger T-lymphocyte proliferative and/or cytolytic activity in vitro and may initiate graft rejection or graft-versus-host disease (GVHD) in vivo. AB0 and related antigens, whose presence on vascular endothelial cells may provoke antibody-mediated graft rejection, are excluded from this group because they do not in...

Human minor histocompatibility antigens.

Disparities in minor histocompatibility antigens between HLA-matched organ and bone marrow donors and recipients create a potential risk for graft failure and graft-versus-host disease. These conditions necessitate lifelong pharmacological immunosuppression of organ and bone marrow transplant recipients. Recent technical advances have resulted in the identification of the chemical nature of the...

Histocompatibility Leukocyte Antigens

We have studied a family in which the proband had systemic lupus erythematosus and selective incomplete deficiency of the fourth component of complement (C4) (2-5% of the normal level). An additional six healthy family members also had low C4 levels (2.4-24.1% of normal) but no evidence of lupus. This form of inherited C4 deficiency differs from that in previously reported families in that inhe...