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High Plasma Levels of Islet Amyloid Polypeptide in Young with New-Onset of Type 1 Diabetes Mellitus
Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center of Paediatrics and Gynaecology and Obstetrics, Department of Paediatrics in Linköping.
University of Lund Hospital, Sweden .
Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Health Sciences.
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2014 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 9, no 3, 0093053- p.Article in journal (Refereed) Published
Abstract [en]

Aims/Hypothesis: Islet amyloid polypeptide (IAPP) is a beta cell hormone secreted together with insulin upon glucose stimulation. IAPP participates in normal glucose regulation, but IAPP is also known for its ability to misfold and form islet amyloid. Amyloid fibrils form through smaller cell toxic intermediates and deposited amyloid disrupts normal islet architecture. Even though IAPP and amyloid formation are much discussed in type 2 diabetes, our aim was to study the significance of IAPP in type 1 diabetes. Results: Plasma IAPP levels in children and adolescents with newly diagnosed type 1 diabetes (n = 224) were analysed and concentrations exceeding 100 pmol/L (127.2 - 888.7 pmol/L) were found in 11% (25/224). The IAPP increase did not correlate with C-peptide levels. Conclusions/Interpretation: Plasma levels of IAPP and insulin deviate in a subpopulation of young with newly-diagnosed type 1 diabetes. The determined elevated levels of IAPP might increase the risk for IAPP misfolding and formation of cell toxic amyloid in beta cells. This finding add IAPP-aggregation to the list over putative pathological factors causing type 1 diabetes.

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Public Library of Science , 2014. Vol. 9, no 3, 0093053- p.
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Medical and Health Sciences
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URN: urn:nbn:se:liu:diva-106686DOI: 10.1371/journal.pone.0093053ISI: 000333677000107OAI: oai:DiVA.org:liu-106686DiVA: diva2:718426
Available from: 2014-05-21 Created: 2014-05-19 Last updated: 2017-12-05

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Paulsson, JohanLudvigsson, JohnnyCasas, Rosaura

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