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Detection of monocyte-derived microparticles in patients with Type II diabetes mellitus

S Omoto1, S Nomura, A Shouzu

  • 1Second Department of Internal Medicine, Kansai Medical University, Osaka, Japan.

Diabetologia
|May 29, 2002
PubMed
Abstract

Insights

Plasma monocyte-derived microparticles (MDMPs) and platelet-derived microparticles (PDMPs) are elevated in Type II diabetes. High MDMP levels correlate with diabetic vascular complications, particularly nephropathy, suggesting a role in disease progression.

Area of Science:

  • Endocrinology
  • Vascular Biology
  • Immunology

Background:

  • Diabetic vascular complications are a major health concern.
  • The role of microparticles and platelet activation in diabetes is not fully understood.

Purpose of the Study:

  • To investigate the role of plasma monocyte-derived microparticles (MDMPs) and platelet activation markers (PDMP, plt-CD62P, plt-CD63) in diabetic vascular complications.
  • To compare plasma concentrations of these markers between diabetic patients and control subjects.

Main Methods:

  • Plasma concentrations of MDMPs and PDMPs were analyzed using flow cytometry.
  • Platelet activation markers (plt-CD62P, plt-CD63) and serum sE-selectin were measured.
  • Enzyme-linked immunosorbent assay was used for sE-selectin measurements.

Main Results:

  • MDMP concentrations were significantly higher in Type II diabetes patients compared to controls.
  • PDMPs, plt-CD62P, and plt-CD63 levels were also elevated in diabetic patients.
  • MDMP levels correlated positively with platelet activation markers and were higher in patients with vascular complications like nephropathy, retinopathy, and neuropathy.
  • Increased MDMP was most significant in patients with nephropathy.

Conclusions:

  • Type II diabetes is associated with increased monocyte activation, potentially triggered by activated platelets and PDMPs.
  • Elevated MDMP concentrations may serve as an indicator of vascular complications in diabetes, especially diabetic nephropathy.
  • These findings highlight the potential involvement of microparticles in the pathogenesis of diabetic vascular disease.

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