title: Ctla-4 exon 1 (+49) and promoter (-318) gene polymorphisms in kidney transplantation.
abstract: To investigate the association between kidney transplant rejection and the polymorphisms of CTLA-4 gene exon 1(+49) and promoter (-318), genomic DNA of 70 renal transplant recipients and 110 healthy blood donors were genotyped by PCR-RFLP and PCR-SSP, respectively. The patients were classified in two groups: G1 included 33 HLA-identical recipients and G2, 37 one haplo-identical recipients. Thirty-one recipients experienced an acute rejection episode: 10 in G1 and 21 in G2. Ten G2 patients developed chronic allograft dysfunction (CAD). Allelic frequencies and genotype distribution were similar among patients and controls. CTLA-4 exon 1 genotype A/A and CTLA-4 promoter genotype C/C were significantly higher among G2 patients with CAD than without CAD (P < .01). The distribution of CTLA-4 exon 1-promoter genes did not reach significance between graft recipients and controls. The genotype frequency of (G/G-C/C) was increased among controls (42.72%) compared with graft recipients (G1 and G2; 35.71%). CTLA-4 polymorphisms gene were associated with susceptibility to chronic allograft dysfunction.
authors.affiliation: Laboratory of Immunology, Charles Nicolle Hospital, Bd 9 Avril, 1006 Tunis, Tunisia. khaled.ayed@rns.tn
authors.forename: Y
authors.initials: Y
authors.lastname: Gorgi
authors.forename: I
authors.initials: I
authors.lastname: Sfar
authors.forename: T Ben
authors.initials: TB
authors.lastname: Abdallah
authors.forename: E
authors.initials: E
authors.lastname: Abderrahim
authors.forename: S Jendoubi
authors.initials: SJ
authors.lastname: Ayed
authors.forename: H
authors.initials: H
authors.lastname: Aouadi
authors.forename: R
authors.initials: R
authors.lastname: Bardi
authors.forename: K
authors.initials: K
authors.lastname: Ayed
mesh_terms: D015703:Antigens, CD / Q000235:genetics*; D000943:Antigens, Differentiation / Q000235:genetics*; D060908:CTLA-4 Antigen; D005091:Exons; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D016030:Kidney Transplantation / Q000276:immunology*; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D012150:Polymorphism, Restriction Fragment Length; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology
chemical_list: D015703:Antigens, CD; D000943:Antigens, Differentiation; D060908:CTLA-4 Antigen; C556706:CTLA4 protein, human