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Cellular and Humoral Immune responses in Type 1 Diabetic patients participating in a Phase III GAD-alum Intervention Trial
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.
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.
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2013 (English)In: Diabetes Care, ISSN 0149-5992, E-ISSN 1935-5548, Vol. 36, no 11, 3418-3424 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVEGAD formulated in aluminum hydroxide (GAD-alum) has previously been shown to induce preservation of residual insulin secretion in recent-onset type 1 diabetes, but recent phase II and III GAD-alum trials failed to reach primary outcomes. The European phase III study was therefore closed after 15 months, and only a minority of patients completed the 30 months of follow-up.RESEARCH DESIGN AND METHODSThis study aimed to characterize cellular and humoral responses in the Swedish patients (n = 148) participating in the phase III trial, receiving four (4D) or two (2D) GAD-alum doses or placebo. Serum GAD(65) antibody (GADA) levels, GADA IgG1-4 subclass distribution, cytokine secretion, and proliferative responses in peripheral blood mononuclear cells (PBMCs) were analyzed.RESULTSThe GAD(65)-induced cytokine profile tended to switch toward a predominant Th2-associated profile over time both in the 2D and 4D group. The groups also displayed increased GADA levels and PBMC proliferation compared with placebo, whereas GADA IgG subclass distribution changed in 4D patients.CONCLUSIONSBoth 2D and 4D patients displayed GAD(65)-specifc cellular and humoral effects after GAD-alum treatment, but at different time points and magnitudes. No specific immune markers could be associated with treatment efficacy.

Place, publisher, year, edition, pages
American Diabetes Association , 2013. Vol. 36, no 11, 3418-3424 p.
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Clinical Medicine
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URN: urn:nbn:se:liu:diva-99798DOI: 10.2337/dc12-2251ISI: 000326274100013PubMedID: 23863909OAI: oai:DiVA.org:liu-99798DiVA: diva2:658251
Available from: 2013-10-21 Created: 2013-10-21 Last updated: 2017-12-06Bibliographically approved

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Diabetes Care(659 kB)132 downloads
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Axelsson, StinaCheramy, MikaelÅkerman, LindaPihl, MikaelLudvigsson, JohnnyCasas, Rosaura

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Axelsson, StinaCheramy, MikaelÅkerman, LindaPihl, MikaelLudvigsson, JohnnyCasas, Rosaura
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Division of Clinical SciencesFaculty of Health SciencesDepartment of Paediatrics in Linköping
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