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Rev Med Chil. 2004 Apr;132(4):413-20.

[Plasma levels of interleukin-1beta, interleukin-2 and interleukin-4 in recently diagnosed type 1 diabetic children and their association with beta-pancreatic autoantibodies].

[Article in Spanish]

Author information

  • 1Programa de Epidemiología Genética, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile. fperez@inta.cl

Abstract

BACKGROUND:

Type 1 diabetes is an organ specific autoimmune disease whose incidence is increasing worldwide. A functional imbalance in cytokine production resulting in dominance of T helper (Th1) over Th2-type response has been suggested to play a critical role in the pathogenesis of type 1 diabetes.

AIM:

To measure serum concentrations of interleukin (IL)-1beta, IL-2 and IL-4 in children with recently diagnosed type 1 diabetes and to evaluate the autoimmune response measuring glutamic acid decarboxylase (GAD65) and tyrosine phosphatase like (IA-2) autoantibodies.

PATIENTS AND METHODS:

120 diabetic children and 118 age and gender matched control children, were recruited for this study. Circulating levels of IL-1beta IL-2 and IL-4 were measured by ELISA. GAD65 and IA-2 were measured by RIA.

RESULTS:

Circulating levels of IL-1beta were elevated in type 1 diabetic children as compared to the control group (9.3 +/- 7.3 and 4.9 +/- 3.8 pg/ml respectively, p=0.01). Serum concentration of IL-2 was also higher in diabetic patients (19.8 +/- 13.1 and 113 +/- 9.1 pg/ml respectively, p=0.01). No differences in serum IL-4 were observed between diabetics and control. Diabetic children with one or two positive autoantibodies (IA-2 and/or GAD65) had significantly higher levels of IL-1beta and IL-2 and lower levels of IL-4 than diabetic children without positive autoantibodies. High concentrations of IL-1beta were associated with an early onset of the disease.

CONCLUSIONS:

High levels of IL-1beta and IL-2 were found in diabetic children with recent diagnosis of the disease. Diabetics with positive antibodies against GAD65 and IA-2 had higher levels of IL-1beta and IL-2 and lower levels of IL-4 than their counterparts without positive antibodies.

PMID:
15382512
[PubMed - indexed for MEDLINE]
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