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Carina Törn

Coordinator

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Ketoacidosis in young adults is not related to the islet antibodies at the diagnosis of Type 1 diabetes mellitus - A nationwide study

Author

  • Jan Östman
  • M. Landin-Olsson
  • C. Törn
  • J. Palmer
  • A. Lernmark
  • H Arnqvist
  • E. Björk
  • J. Bolinder
  • G Blohmé
  • J. Eriksson
  • B. Littorin
  • L. Nyström
  • B. Scherstén
  • G. Sundkvist
  • L. Wibell

Summary, in English

Aims: To test the hypothesis that there is lower prevalence of islet antibodies in subjects with newly diagnosed Type 1 diabetes mellitus in young adulthood than in children is associated with less severe diabetes at time of diagnosis. Methods: This investigation was based on a nationwide study (Diabetes Incidence Study in Sweden) of 15-34-year-old newly diagnosed diabetic subjects. During 1992-1993, all diabetic subjects (excluding secondary and gestational diabetes) were reported on standardized forms, with information about clinical characteristics at diagnosis. The study examined islet cell antibodies (ICA) by indirect immunofluorescence, and autoantibodies to glutamic acid decarboxylase (GADA), tyrosine phosphatase- like antigen (IA-2A) and insulin (IAA) as well as C-peptide by radioimmunoassay. Results: Blood samples were available from 78 patients with diabetic ketoacidosis (DKA) and 517 non-acidotic patients. The prevalence of ICA (63% vs. 57%), GADA (63% vs. 66%), IA-2A (35% vs. 44%) and IAA (20% vs. 15%) were very similar in patients with or without DKA. The median levels of the four autoantibodies did not differ between the two groups. High blood glucose (P < 0.001) and low C-peptide levels (P < 0.001) were the only parameters found to be related to DKA. Conclusions: The similarities in findings of newly diagnosed diabetic patients with or without DKA regarding ICA, GADA, IA-2A and IAA suggest that there is no relationship between the expression of antigenicity and the severity of β-cell dysfunction. The lower prevalence of the four autoantibodies in 15-34-year-old diabetic subjects compared with previous findings in children is not explained by misclassification of diabetes type.

Department/s

  • Medicine, Lund

Publishing year

2000

Language

English

Pages

269-274

Publication/Series

Diabetic Medicine

Volume

17

Issue

4

Document type

Journal article

Publisher

Wiley-Blackwell

Topic

  • Endocrinology and Diabetes

Keywords

  • Blood glucose
  • C-Peptide
  • Type 1 diabetes mellitus
  • Type 2 diabetes mellitus

Status

Published

ISBN/ISSN/Other

  • ISSN: 0742-3071