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Diabetologia. 2010 Apr;53(4):690-8. doi: 10.1007/s00125-009-1642-y. Epub 2010 Jan 9.

Dimorphic histopathology of long-standing childhood-onset diabetes.

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1
Barbara Davis Center for Childhood Diabetes, University of Colorado Denver, 1775 Aurora Court, Aurora, CO 80055, USA. roberto.gianani@ucdenver.edu

Erratum in

  • Diabetologia. 2010 Aug;53(8):1811-2.

Abstract

AIMS/HYPOTHESIS:

Childhood diabetes is thought to usually result from autoimmune beta cell destruction (type 1A) with eventual total loss of beta cells. Analysis of C-peptide in children characterised at diabetes onset for autoantibodies shows heterogeneous preservation of insulin secretion in long-standing diabetes. The aim of this study was to characterise the pancreases of childhood-onset diabetes in order to define the pathological basis of this heterogeneity.

METHODS:

We evaluated 20 cadaveric organ donor pancreases of childhood-onset long-term patients for disease heterogeneity and obtained corresponding C-peptide measurements.

RESULTS:

Pancreases from the majority of cadaveric donors contained only insulin-deficient islets (14 of 20). The remaining six patients (30%) had numerous insulin-positive cells within at least some islets, with two different histological patterns. Pattern A (which we would associate with type 1A diabetes) had lobular retention of areas with 'abnormal' beta cells producing the apoptosis inhibitor survivin and HLA class I. In pattern B, 100% of all islets contained normal-appearing but quantitatively reduced beta cells without survivin or HLA class I.

CONCLUSIONS/INTERPRETATION:

Our data demonstrate that C-peptide secretion in long-standing diabetic patients can be explained by two different patterns of beta cell survival,possibly reflecting different subsets of type 1 diabetes.

PMID:
20062967
DOI:
10.1007/s00125-009-1642-y
[Indexed for MEDLINE]
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