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Common Caucasoid HLA-A1B8DR3 linkage group and immune responsiveness in a hybrid Venezuelan population: preliminary data.

Authors
Type
Published Article
Journal
Experimental and clinical immunogenetics
Publication Date
Volume
14
Issue
4
Pages
243–249
Identifiers
PMID: 9523160
Source
Medline

Abstract

A study performed on Venezuelans reveals a correlation between the common Caucasoid linkage group HLA-A1 B8 (A*0101, B*0801, DR3-) and increased lymphoproliferative activity stimulated by several concentrations of phytohemagglutin and concanavalin A in comparison to the group of persons possessing either the HLA-A1 (A*0101) antigen or the HLA-B8,DR3 (B*0801,DRB1*03012) haplotype. The increased lymphoproliferative activity was simultaneously present with increased CD16 cell counts and decreased CD3 and total mononuclear counts. A further comparison of lymphocyte population and subpopulation counts in peripheral blood and serum Ig G,A,M levels in the HLA-A1+ B8+ versus the HLA-A1-B8-high-responder individuals revealed increased CD16 cell counts and IgM levels in persons with the common Caucasoid haplotype (HLA-A1 B8). The data may suggest that some of the genes responsible for these levels or genes controlling their expression could be localized in or along the length of the common Caucasoid haplotype HLA-A1 B8 between the A and B loci of the MHC.

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