Diminished IFN-gamma response to diabetes-associated autoantigens in children at diagnosis and during follow up of type 1 diabetes

Diabetes/metabolism Research and Reviews
Maria FaresjöJohnny Ludvigsson

Abstract

Imbalance of T-helper (Th)1- and Th2-like cytokines has been associated with type 1 diabetes. We therefore studied the immune deviation in antigen-specific T cells from diagnosis onwards in type 1 diabetic children. Peripheral blood mononuclear cells (PBMC) were collected from 15 children after 4 days, 3 months and 18 months of being diagnosed with type 1 diabetes, from 15 healthy children matched by age and gender to the type 1 diabetic children and from 14 children with and 35 children without HLA-risk genes. Secretion of interferon-gamma (IFN-gamma) and interleukin-4 (IL-4) was detected by ELISPOT after stimulation with glutamic acid decarboxylase (GAD(65), protein and aa 247-279), recombinant tyrosinphosphatase (IA-2), insulin, ovalbumin and phytohaemagglutinin (PHA). Secretion of IFN-gamma in PBMC stimulated with GAD(65) (p < 0.05), the GAD(65)-peptide (p < 0.01), IA-2 (p < 0.01), and insulin (p < 0.01) was lower in diabetic children at diagnosis than in healthy children. Stimulation of PBMC with GAD(65) and IA-2 decreased the secretion of IFN-gamma in children with HLA-risk genotype. Spontaneous and antigen-induced IFN-gamma secretion increased significantly after diagnosis of the disease, but did not exceed the levels ob...Continue Reading

References

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Citations

Sep 11, 2008·Scandinavian Journal of Immunology·J WalldénABIS Study Group
Feb 7, 2014·The Journal of Immunology : Official Journal of the American Association of Immunologists·Emma CarlssonMaria Faresjö

Related Concepts

Autoantigens
Diabetes, Autoimmune
Glutamate Decarboxylase
Cellular Immune Response
Novolin
Interferon Type II
Nongranular Leukocyte
T-Lymphocyte
Protein Tyrosine Phosphatase
Protein tyrosine phosphatase, non-receptor type 1

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