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Expression of cell surface antigens in diabetic patients and healthy controls after injury

R Lobmann1, A Ittenson, S Schiweck

  • 1Department of Endocrinology and Metabolism, University of Magdeburg Medical School, Magdeburg, Germany. ralf.lobmann@medizin.uni-magdeburg.de

Diabetes, Nutrition & Metabolism
|December 4, 2004
PubMed
Abstract

Insights

Diabetic foot ulcers show altered cell-surface antigens, impacting wound healing. These changes in cluster of differentiation (CD) and human leukocyte antigen-diabetic retinopathy (HLA-DR) may explain persistent diabetic lesions.

Area of Science:

  • Immunology
  • Endocrinology
  • Wound Healing Research

Background:

  • Type 2 diabetes causes systemic cellular disturbances affecting wound healing.
  • Chronic wounds, particularly diabetic foot ulcers, exhibit altered cell-surface antigens.
  • These antigen alterations may contribute to the persistence of diabetic foot lesions.

Purpose of the Study:

  • To investigate alterations in cell-surface antigens in diabetic patients with foot ulcers.
  • To compare antigen expression between diabetic patients and healthy controls post-injury.

Main Methods:

  • Blood samples from 21 diabetic patients with foot ulcers and 9 healthy controls were analyzed.
  • Flow cytometry (fluorescence-activated cell sorter - FACS) was used to examine cell-surface antigens.
  • Specific antigens studied included cluster of differentiation (CD)2, CD3, CD4, CD25, and human leukocyte antigen-diabetic retinopathy (HLA-DR).

Main Results:

  • Elevated levels of CD2 (p<0.001) and CD25 (p<0.001) were observed in diabetic patients.
  • CD3 levels were also elevated (p=0.016), while CD4 showed no significant difference (p=0.22).
  • A decrease in HLA-DR expression was noted in diabetic foot patients (p=0.023).

Conclusions:

  • Cell-surface antigen expression is significantly altered in diabetic patients compared to healthy individuals.
  • These cellular disturbances, linked to systemic Type 2 diabetes, likely impair wound healing.
  • Targeting these altered antigens may offer new therapeutic avenues for diabetic foot ulcers.

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