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[Role of polymorphonuclear leukocytes in development vascular complications in diabetes]

Krzysztof Mastej1, Rajmund Adamiec

  • 1Akademia Medyczna we Wroclawiu, Katedra i Klinika Angiologii, Nadciśnienia Tetniczego i Diabetologii. kmastej@interia.pl

Polski Merkuriusz Lekarski : Organ Polskiego Towarzystwa Lekarskiego
|April 19, 2006
PubMed
Abstract

Insights

Polymorphonuclear leukocytes (PMN) show increased CD11b expression in type 2 diabetes, particularly with early nephropathy. This suggests heightened inflammation in diabetic patients, even before vascular complications develop.

Area of Science:

  • Immunology
  • Endocrinology
  • Vascular Biology

Background:

  • Polymorphonuclear leukocytes (PMN) are implicated in diabetic vascular complications.
  • PMN activation involves increased expression of adhesion molecules.
  • Type 2 diabetes is associated with an increased risk of vascular disease.

Purpose of the Study:

  • To evaluate beta2-integrin (CD11b/CD18) and selectin-L (CD62L) expression on PMN in type 2 diabetes patients.
  • To assess these markers in relation to vascular complications like nephropathy and macroangiopathy.
  • To investigate PMN activation as an indicator of inflammatory response in diabetes.

Main Methods:

  • Study included 36 type 2 diabetic patients and 13 healthy controls.
  • Diabetic patients were categorized into groups: early nephropathy, macroangiopathy, and no vascular complications.
  • Flow cytometry was used to measure CD11b and CD62L expression on peripheral blood PMN.

Main Results:

  • CD11b expression was significantly higher in diabetic patients with early nephropathy compared to controls and those without complications.
  • Diabetic patients without vascular complications also showed increased CD11b expression versus controls.
  • No significant differences in CD11b expression were observed in patients with macroangiopathy, nor in CD62L expression across all groups.

Conclusions:

  • Peripheral blood PMN are activated in type 2 diabetes.
  • Elevated CD11b expression in early nephropathy and pre-complication stages indicates increased inflammation.
  • CD11b may serve as a marker for inflammatory response in diabetic vascular disease progression.

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