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Combinations of beta cell specific autoantibodies at diagnosis of diabetes in young adults reflects different courses of beta cell damage

Author:
  • Carina Törn
  • Mona Landin-Olsson
  • Åke Lernmark
  • Bengt Scherstén
  • J. Ostman
  • H.J. Arnqvist
  • E. Bjork
  • G. Blohme
  • J. Bolinder
  • J. Eriksson
  • Bengt Littorin
  • L. Nyström
  • Göran Sundkvist
Publishing year: 2001
Language: English
Pages: 115-120
Publication/Series: Autoimmunity
Volume: 33
Issue: 2
Document type: Journal article
Publisher: Taylor & Francis

Abstract english

To explore the natural course of beta cell function in recent onset diabetes, a subgroup (n = 157) of all incident cases (n = 879) 15-34 years old. 1992-1993 in Sweden. and with positivity for at least one autoantibody of islet cell antibodies (ICA), glutamic acid decarboxylase antibodies (GADA) or tyrosine phosphatase antibodies (1A-2A) were followed prospectively thr the first four years with annual analysis of C-peptide. The aim was to relate the course of beta cell function, measured as C-peptide, in early diabetes with the presence of different islet autoantibodies at diagnosis. We found that patients positive for ICA alone (n = 11 ) had significantly higher C-peptide levels both at diagnosis and during the first three years compared with the other patients (n = 146; p = 0.022, p < 0.001, p = 0.004 and p = 0.0022). Patients positive for GADA alone or in combination with other antibodies (n = 125) had significantly lower C-peptide during the first three years after diagnosis compared with the other patients (n = 32. p < 0.001, p = 0.0011 and p = 0.0136). Patients with two or three autoantibodies had C-peptide levels similar to levels found in patients positive only for GADA. However. after four years, there were no significant differences between any of the groups of different autoantibody combinations. At diagnosis. 55% (86/157) of the patients had C-peptide: levels above the lower normal range of 0.25 nmol/l, but the frequency of patients with beta cell Function above this level decreased after two years to 41% (65/157; p = 0.035) and after four years to 22% (35/157; p = 0.0041).

Keywords

  • Rheumatology and Autoimmunity

Other

Published
  • Diabetes and Celiac Unit
  • Family Medicine and Community Medicine
  • ISSN: 0891-6934
E-mail: ake [dot] lernmark [at] med [dot] lu [dot] se

Principal investigator

Diabetes and Celiac Unit

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+46 70 616 47 79

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Jan Waldenströms gata 35, Malmö

33

Lund University Diabetes Centre, CRC, SUS Malmö, Jan Waldenströms gata 35, House 91:12. SE-214 28 Malmö. Telephone: +46 40 39 10 00