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Possible heterogene...
Possible heterogeneity of initial pancreatic islet beta-cell autoimmunity heralding type 1 diabetes
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- Lernmark, Åke (author)
- Lund University,Lunds universitet,Celiaki och diabetes,Forskargrupper vid Lunds universitet,Celiac Disease and Diabetes Unit,Lund University Research Groups,Skåne University Hospital
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- Akolkar, Beena (author)
- National Institute of Diabetes and Digestive and Kidney Diseases
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- Hagopian, William (author)
- Pacific Northwest Research Institute
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- Krischer, Jeffrey (author)
- University of South Florida
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- McIndoe, Richard (author)
- Medical College of Georgia
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- Rewers, Marian (author)
- University of Colorado
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- Toppari, Jorma (author)
- University of Turku
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- Vehik, Kendra (author)
- University of South Florida
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- Ziegler, Anette-G (author)
- Helmholtz Zentrum München
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Journal of Internal Medicine. - 1365-2796. ; 294:2, s. 145-158
- Related links:
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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Abstract
Subject headings
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- The etiology of type 1 diabetes foreshadows the pancreatic islet beta-cell autoimmune pathogenesis that heralds the clinical onset of type 1 diabetes. Standardized and harmonized tests of autoantibodies against insulin (IAA), glutamic acid decarboxylase (GADA), islet antigen-2 (IA-2A) and ZnT8 transporter (ZnT8A) allowed children to be followed from birth until the appearance of a first islet autoantibody. In the Environmental Determinants of Diabetes in the Young (TEDDY) study, a multicenter (Finland, Germany, Sweden and the US) observational study, children were identified at birth for the type 1 diabetes high risk HLA haplogenotypes DQ2/DQ8, DQ2/DQ2, DQ8/DQ8 and DQ4/DQ8. The TEDDY study was preceded by smaller studies in Finland, Germany, Colorado, Washington and Sweden. The aims were to follow children at increased genetic risk to identify environmental factors that trigger the first-appearing autoantibody (etiology) and progress to type 1 diabetes (pathogenesis). The larger TEDDY study found that the incidence rate of the first-appearing autoantibody was split into two patterns. IAA first peaked already during the first year of life and tapered off by 3-4 years of age. GADA first appeared by 2-3 years of age to reach a plateau by about 4 years. Prior to the first-appearing autoantibody, genetic variants were either common or unique to either pattern. A split was also observed in whole blood transcriptomics, metabolomics, dietary factors and exposures such as gestational life events and early infections associated with prolonged shedding of virus. An innate immune reaction prior to the adaptive response cannot be excluded. Clarifying the mechanisms by which autoimmunity is triggered to either insulin or GAD65 is key to uncovering the aetiology of autoimmune type 1 diabetes. This article is protected by copyright. All rights reserved.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)
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