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- Title
Gastric parietal cell antibodies are associated with glutamic acid decarboxylase-65 antibodies and the HLA DQA1*0501-DQB1*0301 haplotype in Type 1 diabetes mellitus.
- Authors
De Block, C. E. M.; De Leeuw, I. H.; Rooman, R. P. A.; Winnock, F.; Du Caju, M. V. L.; Van Gaal, L. F.; Registry, the Belgian Diabetes
- Abstract
SUMMARY Aims To assess the prevalence of thyrogastric autoimmunity in relation to age, sex, β-cell antibody status and HLA DQ haplotypes in Type 1 diabetes mellitus. Methods One hundred and seventy-one patients with Type 1 diabetes mellitus were studied (male/female 86/85; mean age 19 ± 11 years; duration of diabetes 5 ± 4 years). Islet cell antibodies (ICA) and parietal cell antibodies (PCA) were measured using indirect immunofluorescence; glutamic acid decarboxylase-65 antibodies (GADA) by radiobinding assay and thyroid peroxidase antibodies (TPO) with an immunoradiometric assay (IRMA). Results The majority of subjects (81.3%) showed one or more autoantibodies. The prevalence rates were: GADA 64.9%, ICA 46.2%, PCA 19.9% and TPO 19.3%. Patients with ICA+ ≥ 3 years after diagnosis had a higher prevalence of GADA (P = 0.03, odds ratio (OR) 2.66) and thyrogastric antibodies (P = 0.05, OR 2.23) than subjects ICA– after 3 years. PCA+ patients were older (P = 0.04), had a higher prevalence of GADA (P = 0.005, OR 3.89) and TPO (P = 0.05, OR 2.50) than PCA– subjects. Logistic regression analysis showed that PCA status was determined by the HLA DQA1*0501-DQB1*0301 haplotype (β = 2.94, P = 0.04) and GADA status (β = 2.44, P = 0.041). Conclusions Thyrogastric antibodies are highly prevalent in Type 1 diabetes mellitus, especially in patients with persisting ICA. Screening for gastric autoimmunity is particularly advised in patients who are positive for GADA and for the HLA DQA1*0501-DQB1*0301 haplotype.
- Subjects
PEOPLE with diabetes; AUTOANTIBODIES; GLUTAMATE decarboxylase; ISLANDS of Langerhans; IODIDE peroxidase
- Publication
Diabetic Medicine, 2000, Vol 17, Issue 8, p618
- ISSN
0742-3071
- Publication type
Article
- DOI
10.1046/j.1464-5491.2000.00354.x