title: Association between IL4 (-590), ACE (I)/(D), CCR5 (Delta32), CTLA4 (+49) and IL1-RN (VNTR in intron 2) gene polymorphisms and vitiligo.
abstract: Vitiligo is a common skin disorder characterized by patterned depigmentation, because of a decrease of melanin pigment resulting from apparent melanocyte loss. The aim of this study was to investigate interleukin 4 (IL4), Angiotensin Converting Enzyme (ACE), C-C Chemocine Receptor 5 (CCR5), Cytotoxic T Lymphocyte-associated Antigen Receptor 4 (CTLA4) and Interleukin 1 Receptor Antagonist (IL1-RN) gene polymorphisms in 48 Turkish vitiligo patients and 50 healthy controls. Polymorphisms for the genes ACE insertion(I)/deletion(D), CCR5 (Delta32), IL1-RN (VNTR in intron 2) were detected by PCR methods. IL4 (-590) and CTLA4 (+49) gene polymorphisms were typed using PCR-RFLP methods. No significant differences in either the genotype distribution or allele frequencies of IL4, CCR5 and ACE gene polymorphisms were observed. GG genotype and G allele in CTLA4 genes were found to be significantly higher in vitiligo patients compared to the controls. (0.002, 0.000). CTLA4 (AA) and IL1-RN (1/5) genotypes and 5 allele frequency in the IL1-RN gene were found to be significantly lower in vitiligo patients compared to healthy controls (p: 0.014, 0.015, 0.016, respectively). As a conclusion, CTLA4 and IL1-RN genes might play roles in the genetic etiology of vitiligo.
authors.affiliation: Gaziantep University Faculty of Medicine, Department of Medical Biology, 27060 Gaziantep, Turkey.
authors.forename: Sacide
authors.initials: S
authors.lastname: Pehlivan
authors.forename: Ferda
authors.initials: F
authors.lastname: Ozkinay
authors.forename: Sibel
authors.initials: S
authors.lastname: Alper
authors.forename: Huseyin
authors.initials: H
authors.lastname: Onay
authors.forename: Eda
authors.initials: E
authors.lastname: Yuksel
authors.forename: Mustafa
authors.initials: M
authors.lastname: Pehlivan
authors.forename: Cihangir
authors.initials: C
authors.lastname: Ozkinay
mesh_terms: D000483:Alleles; D015703:Antigens, CD / Q000235:genetics; D060908:CTLA-4 Antigen; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D004587:Electrophoresis, Agar Gel; D005838:Genotype; D006801:Humans; D053590:Interleukin 1 Receptor Antagonist Protein / Q000235:genetics; D015847:Interleukin-4 / Q000235:genetics; D007438:Introns; D007703:Peptidyl-Dipeptidase A / Q000235:genetics; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D019713:Receptors, CCR5 / Q000235:genetics; D014421:Turkey; D014820:Vitiligo / Q000235:genetics*
chemical_list: D015703:Antigens, CD; D060908:CTLA-4 Antigen; C556706:CTLA4 protein, human; D053590:Interleukin 1 Receptor Antagonist Protein; D019713:Receptors, CCR5; D015847:Interleukin-4; D007703:Peptidyl-Dipeptidase A