The Effect of Age on the Progression and Severity of Type 1 Diabetes: Potential Effects on Disease Mechanisms

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Pia Leete1, Roberto Mallone2, Sarah J Richardson1

  • 1Islet Biology Exeter (IBEx), Institute of Biomedical and Clinical Sciences, University of Exeter Medical School, Exeter, UK.

Current Diabetes Reports
|September 28, 2018
PubMed

Insights

Age significantly impacts type 1 diabetes (T1D) development. Children experience faster progression and distinct immune responses compared to adults, necessitating tailored immunotherapies.

Area of Science:

  • Immunology
  • Endocrinology
  • Genetics

Background:

  • Type 1 diabetes (T1D) is an autoimmune disease with distinct characteristics in children versus adults.
  • Understanding age-related differences in T1D pathogenesis is crucial for effective treatment strategies.

Purpose of the Study:

  • To investigate the influence of age on the pathogenesis of type 1 diabetes.
  • To identify age-specific immune, metabolic, and genetic factors contributing to T1D.

Main Methods:

  • Review of histological analyses of post-mortem pancreata.
  • Comparison of immune cell profiles and regulatory functions between pediatric and adult T1D patients.
  • Characterization of genetic loci influencing T1D onset and characteristics.

Main Results:

  • Children with T1D show more rapid progression from autoantibody positivity and lower C-peptide levels than adults.
  • Histological findings in younger patients include fewer insulin-containing islets and increased CD20+ immune infiltrates.
  • Children exhibit reduced immune regulation and increased autoreactive CD8+ T cell activity compared to adults.

Conclusions:

  • Age-related disparities in immune responses, beta cell vulnerability, and genetics contribute to the aggressive T1D phenotype in children.
  • These findings highlight the need for age-tailored immunotherapies for type 1 diabetes.
Abstract

Keywords:
AgeAutoimmunityC-peptideType 1 diabetesβ cell

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