title: Cytotoxic T lymphocyte-associated molecule-4 polymorphism in Turkish patients with Hashimoto thyroiditis.
abstract: We previously shown that in a Turkish population, the A/G polymorphism in exon 1 of the cytotoxic T cell lymphocyte-associated molecule-4 (CTLA-4) gene is associated with Graves' disease, and that the G allele may contribute to susceptibility for developing Graves' disease. This polymorphism was identified in 197 patients with Hashimoto thyroiditis (HT) (126 women, 71 men; aged, 42.92 +/- 13.4 years) and 98 healthy individuals (56 women, 21 men; aged, 42.27 +/- 13.43 years) in Turkish population. Polymorphisms were analysed using a polymerase chain reaction-restriction fragment length polymorphism method. Frequency of the A/G genotypes was not significantly different in patients with HT when compared with controls in both sexes (P > 0.05). There was no statistical difference in age, sex, cigarette smoking, initial serum thyroid hormone levels, initial goiter size and thyroid autoantibodies among the patients with the three different genotypes (G/G, A/G and A/A). We concluded that A/G polymorphism of CTLA molecule is linked to occurrence of Graves' disease bu not to HT in the Turkish population.
authors.affiliation: Department of Endocrinology and Metabolic Diseases Department, Ankara University School of Medicine, Ibni Sina Hospital, Ankara, Turkey. drsahinmustafa@yahoo.com
authors.forename: M
authors.initials: M
authors.lastname: Sahin
authors.forename: A
authors.initials: A
authors.lastname: Gursoy
authors.forename: M F
authors.initials: MF
authors.lastname: Erdogan
mesh_terms: D000328:Adult; D000483:Alleles; D015703:Antigens, CD / Q000235:genetics*; D060908:CTLA-4 Antigen; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006111:Graves Disease / Q000235:genetics*; D050031:Hashimoto Disease / Q000235:genetics* / Q000276:immunology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D012737:Sex Factors; D014421:Turkey
chemical_list: D015703:Antigens, CD; D060908:CTLA-4 Antigen; C556706:CTLA4 protein, human