PMID- 27346697 OWN - NLM STAT- MEDLINE DCOM- 20170315 LR - 20170827 IS - 1879-1166 (Electronic) IS - 0198-8859 (Linking) VI - 77 IP - 10 DP - 2016 Oct TI - Association between KIR genotypes and HLA-B alleles on viral load in Southern Brazilian individuals infected by HIV-1 subtypes B and C. PG - 854-860 LID - S0198-8859(16)30131-8 [pii] LID - 10.1016/j.humimm.2016.06.013 [doi] AB - There is a great variety of HIV-1 subtypes circulating in Brazil, including subtype C, whose prevalence is on the rise, particularly in the southern region. Many host and viral genetic factors may be involved in this trend. We evaluated the influence of human leukocyte antigen (HLA) class I alleles and killer-cell immunoglobulin-like receptor (KIR) genotypes on viral set point and T-CD4(+) parameters in 84 treatment-naive HIV-1-positive individuals. Frequency data in the infected group were compared to data of 548 healthy control subjects. Individuals with the KIR AA genotype had a higher viral load (VL) than individuals with the KIR Bx genotype. The HIV-1 group was subdivided into three subgroups according to HLA-B allele presence: those with protection to disease alleles (HLA-B(+)), accelerated disease progression alleles (HLA-B(-)), or neither (HLA-B(o)) were grouped. We observed a significant effect of the HLA-B allele presence on VL. The HLA-B(+) group had significantly lower VL than the HLA-B(-) group and trended toward a lower VL than the HLA-B(o) group. There were significant differences between groups expressing extreme VL values: KIR-AA+HLA-B(-) vs. KIR Bx+HLA-B(+) and KIR-AA+HLA-B(o)vs. KIR Bx+HLA-B(+). The relationship of KIR/HLA host genetics with slow HIV disease progression in southern Brazil may be useful for vaccine developers, epidemiologists, and clinicians. CI - Copyright (c) 2016 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved. FAU - Fernandes-Cardoso, Juliana AU - Fernandes-Cardoso J AD - Laboratorio de Histocompatibilidade e Criopreservacao, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil. FAU - Suffert, Theodoro Armando AU - Suffert TA AD - Servico de Assistencia Especializada em DST/AIDS, Prefeitura Municipal de Porto Alegre, Porto Alegre, Brazil. FAU - Correa, Maria da Gloria AU - Correa MDG AD - Servico de Assistencia Especializada em DST/AIDS, Prefeitura Municipal de Porto Alegre, Porto Alegre, Brazil. FAU - Jobim, Luiz Fernando Job AU - Jobim LFJ AD - Departamento de Imunologia, Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil. FAU - Jobim, Mariana AU - Jobim M AD - Departamento de Imunologia, Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil. FAU - Salim, Patricia Hartstein AU - Salim PH AD - Departamento de Imunologia, Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil. FAU - Arruda, Monica Barcelos AU - Arruda MB AD - Laboratorio de Virologia Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. FAU - Boullosa, Lidia Theodoro AU - Boullosa LT AD - Laboratorio de Virologia Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. FAU - Tanuri, Amilcar AU - Tanuri A AD - Laboratorio de Virologia Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. FAU - Porto, Luis Cristovao AU - Porto LC AD - Laboratorio de Histocompatibilidade e Criopreservacao, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil. FAU - Ferreira, Orlando C Jr AU - Ferreira OC Jr AD - Laboratorio de Virologia Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. Electronic address: jcardosobio@gmail.com. LA - eng PT - Journal Article DEP - 20160623 PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (HLA-B protein, human) RN - 0 (HLA-B27 Antigen) RN - 0 (Receptors, KIR) SB - IM MH - Adult MH - Aged MH - Brazil MH - Cohort Studies MH - Female MH - Follow-Up Studies MH - Gene Frequency MH - Genetic Association Studies MH - Genetic Predisposition to Disease MH - Genotype MH - HIV Infections/*genetics MH - HIV-1/*physiology MH - HLA-B27 Antigen/*genetics MH - Humans MH - Male MH - Middle Aged MH - Polymorphism, Genetic MH - Receptors, KIR/*genetics MH - *Viral Load MH - Young Adult OTO - NOTNLM OT - Disease progression OT - HIV OT - HLA OT - KIR genotype OT - Viral load EDAT- 2016/06/28 06:00 MHDA- 2017/03/16 06:00 CRDT- 2016/06/28 06:00 PHST- 2015/01/15 00:00 [received] PHST- 2016/06/16 00:00 [revised] PHST- 2016/06/20 00:00 [accepted] PHST- 2016/06/28 06:00 [entrez] PHST- 2016/06/28 06:00 [pubmed] PHST- 2017/03/16 06:00 [medline] AID - S0198-8859(16)30131-8 [pii] AID - 10.1016/j.humimm.2016.06.013 [doi] PST - ppublish SO - Hum Immunol. 2016 Oct;77(10):854-860. doi: 10.1016/j.humimm.2016.06.013. Epub 2016 Jun 23.