PMID- 18623133 OWN - NLM STAT- MEDLINE DCOM- 20080904 LR - 20221207 IS - 1098-2825 (Electronic) IS - 0887-8013 (Print) IS - 0887-8013 (Linking) VI - 22 IP - 4 DP - 2008 TI - Association study of CCR5 delta 32 polymorphism among the HLA-DRB1 Caucasian population in Northern Parana, Brazil. PG - 229-33 LID - 10.1002/jcla.20225 [doi] AB - Chemokines are important determinants of early inflammatory response. The CC chemokine receptor 5 (CCR5) delta 32 variant results in a nonfunctional form of the chemokine receptor and has been implicated in a variety of immune-mediated diseases. In the present study, polymerase chain reaction (PCR) for genomic deoxyribonucleic acid (DNA) samples, using specific CCR5 oligonucleotide primers surrounding the breakpoint deletion, detected a 225-basepair (bp) product from the normal CCR5 allele and a 193-bp product from the 32 bp deletion allele. Human leukocyte antigen (HLA) class II (DRB1) typing was performed by PCR-sequence-specific primer (PCR-SSP). The aim of this study was to evaluate the association of HLA-DRB1 and CCR5 genetic polymorphisms. To evaluate the frequency distributions of CCR5 delta 32 polymorphisms in a Brazilian population and their association with allelic distribution of HLA genes, DRB1; a total of 120 Caucasian individuals from northern Parana, Brazil, were tested. The CCR5/CCR5 genotype was found in 108 individuals (90%) and only one carried the CCR5 delta 32 allele homozygous genotype (0.0238), while 12 (10%) carried the CCR5 delta 32 allele heterozygous genotype. The observed frequency for the CCR5 delta 32 allele was 0.05 in the population studied. The results revealed a CCR5 delta 32 allele occurrence with HLA-DRB1(*)01 and DRB1(*)04 (P<0.05). It is possible that HLA-DRB1(*)01 and DRB1(*)04 alleles could be associated with the delta 32-bp deletion of CCR5. FAU - Muxel, Sandra Marcia AU - Muxel SM AD - Department of Pathological Sciences, State University of Londrina, Londrina, PR, Brazil. FAU - Borelli, Sueli Donizete AU - Borelli SD FAU - Amarante, Marla Karine AU - Amarante MK FAU - Voltarelli, Julio Cesar AU - Voltarelli JC FAU - Aoki, Mateus Nobrega AU - Aoki MN FAU - de Oliveira, Carlos Eduardo Coral AU - de Oliveira CE FAU - Ehara Watanabe, Maria Angelica AU - Ehara Watanabe MA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Lab Anal JT - Journal of clinical laboratory analysis JID - 8801384 RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) RN - 0 (Receptors, CCR5) SB - IM MH - Alleles MH - Brazil/epidemiology MH - Gene Frequency MH - Genetic Testing MH - Genetics, Population MH - HLA-DR Antigens/*genetics/immunology MH - HLA-DRB1 Chains MH - Humans MH - Polymerase Chain Reaction MH - *Polymorphism, Single-Stranded Conformational MH - Receptors, CCR5/*genetics MH - White People/*genetics PMC - PMC6648960 EDAT- 2008/07/16 09:00 MHDA- 2008/09/05 09:00 PMCR- 2008/07/11 CRDT- 2008/07/16 09:00 PHST- 2008/07/16 09:00 [pubmed] PHST- 2008/09/05 09:00 [medline] PHST- 2008/07/16 09:00 [entrez] PHST- 2008/07/11 00:00 [pmc-release] AID - JCLA20225 [pii] AID - 10.1002/jcla.20225 [doi] PST - ppublish SO - J Clin Lab Anal. 2008;22(4):229-33. doi: 10.1002/jcla.20225.