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The effects of cholesterol levels on hemorheological parameters in diabetic patients

Meltem Ercan1, Dildar Konukoğlu, Tijen Erdem

  • 1Department of Biophysics, University of Istanbul, Cerrahpasa Medical Faculty, Istanbul, Turkey. melat65@yahoo.com

Clinical Hemorheology and Microcirculation
|July 18, 2002
PubMed

Insights

High cholesterol in type 2 diabetes patients impairs red blood cell (RBC) deformability and increases blood viscosity. This hemorheological change may contribute to cardiovascular disease risk in diabetic individuals.

Area of Science:

  • Cardiovascular Science
  • Diabetology
  • Hemorheology

Background:

  • Diabetes mellitus (DM) and hypercholesterolemia are known risk factors for coronary heart disease.
  • The precise mechanisms linking these conditions to cardiovascular risk remain incompletely understood.
  • Red blood cell (RBC) deformability is a critical hemorheological parameter influencing blood flow and viscosity.

Purpose of the Study:

  • To investigate the relationship between plasma cholesterol levels and hemorheological parameters in patients with type 2 diabetes.
  • To determine if hypercholesterolemia exacerbates hemorheological abnormalities in type 2 diabetic individuals.

Main Methods:

  • A cohort of 55 type 2 diabetic patients was studied.
  • Patients were categorized into normocholesterolemic (cholesterol ≤ 200 mg/dl) and hypercholesterolemic (cholesterol > 200 mg/dl) subgroups.
  • Key hemorheological parameters, including RBC deformability, blood viscosity, and plasma viscosity, were assessed and compared between subgroups.

Main Results:

  • Hypercholesterolemic type 2 diabetic patients exhibited significantly lower RBC deformability compared to normocholesterolemic counterparts (p<0.001).
  • Elevated blood and plasma viscosity were observed in the hypercholesterolemic diabetic subgroup.
  • These findings indicate a detrimental impact of high cholesterol on RBC function in diabetes.

Conclusions:

  • Elevated plasma cholesterol significantly impairs RBC deformability in type 2 diabetic patients.
  • Hypercholesterolemia contributes to increased blood and plasma viscosity, potentially exacerbating cardiovascular risk beyond hyperglycemia.
  • These hemorheological alterations represent a key mechanism linking high cholesterol and cardiovascular complications in type 2 diabetes.

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