High GAD65 autoantibody levels in nondiabetic adults are associated with HLA but not with CTLA-4 or INS VNTR.

OBJECTIVES: To explore the relationship between genetic background and antibody levels in a nondiabetic population. We evaluated if high levels of autoantibodies against the 65 kDa isoform of glutamic acid decarboxylase (GAD65Ab), were associated with high-risk genes, i.e. HLA, CTLA-4 and INS VNTR genes. DESIGN AND SUBJECTS: Seventy-five (M/F 39/36) subjects exceeding the 95th percentile of GAD65 autoantibody index and 75 age and sex matched subjects below the 95th percentile, randomly selected amongst participants in the Västerbotten Intervention Programme. METHODS: The GAD65 Ab were measured in a radioligand-binding assay. HLA class II typing was performed by an oligoblot hybridization method. CTLA-4 repeat length was analysed and divided into short forms and long forms. Class I and class III alleles of INS VNTR were detected. Differences in distribution were tested by Pearson chi-square with Yates correction. Odds ratios (OR) were used to compare groups calculated with Cochran's and

Hägg, E (författare)
Janer, M (författare)
Rutledge, E (författare)
Gaur, L K (författare)
Nilsson, M (författare)
Hallmans, G (författare)
Lernmark, ÅkeLund University,Lunds universitet,Celiaki och diabetes,Forskargrupper vid Lunds universitet,Celiac Disease and Diabetes Unit,Lund University Research Groups(Swepub:lu)endo-ale (författare)
Celiaki och diabetesForskargrupper vid Lunds universitet (creator_code:org_t)

Av författaren/redakt...: Rolandsson, O; Hägg, E; Janer, M; Rutledge, E; Gaur, L K; Nilsson, M; visa fler...; Hallmans, G; Lernmark, Åke; visa färre...

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