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Involvement of Heparanase in Endothelial Cell-Cardiomyocyte Crosstalk

Rui Shang1, Nathaniel Lal1, Karanjit Puri1

  • 1Faculty of Pharmaceutical Sciences, The University of British Columbia, Vancouver, BC, Canada.

Advances in Experimental Medicine and Biology
|April 11, 2020
PubMed

Insights

Diabetes management often overlooks cardiac fuel utilization. In diabetic hearts, uncontrolled fat use disrupts energy metabolism, leading to heart failure. Understanding the heparanase-LPL-VEGFs network is key to preventing cardiac damage.

Area of Science:

  • Cardiovascular Metabolism
  • Diabetic Cardiomyopathy
  • Molecular Cardiology

Background:

  • Diabetes management traditionally focuses on blood glucose control, often neglecting cardiac metabolic changes.
  • Diabetic hearts alter fuel utilization, shifting from glucose and fats to predominantly fats for energy.
  • This metabolic shift, if uncontrolled, leads to toxic byproducts, impairing heart function and causing heart disease.

Purpose of the Study:

  • To investigate the role of the heparanase-LPL-VEGFs network in regulating cardiac fat metabolism in diabetes.
  • To understand how the dysfunction of this network contributes to diabetic cardiomyopathy.
  • To identify potential therapeutic targets for mitigating diabetes-related cardiac damage.

Main Methods:

  • Analysis of fuel utilization in diabetic heart models.
  • Investigation of the heparanase-LPL-VEGFs complex interactions.
  • Assessment of fat supply and breakdown pathways in the diabetic heart.

Main Results:

  • The diabetic heart exhibits a shift towards fat utilization for energy.
  • Dysregulation of the heparanase-LPL-VEGFs network leads to fat oversupply and cellular damage.
  • Uncontrolled fat metabolism generates toxic byproducts, weakening cardiac function.

Conclusions:

  • The heparanase-LPL-VEGFs ensemble plays a critical role in cardiac fat metabolism.
  • Disruption of this network in diabetes results in detrimental metabolic changes and cardiac damage.
  • Targeting the heparanase-LPL-VEGFs network may offer a strategy to restore metabolic balance and protect the diabetic heart.

Keywords:
CardiomyopathyDiabetesLipoprotein lipaseMetabolismVascular endothelial growth factors

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