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Author Spotlight: The Significance of Isolation, Culture, and Adipogenic Induction of SVF-Derived Preadipocytes from Mouse Perivascular Adipose Tissue
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Is the amount of coronary perivascular fat related to atherosclerosis?

I Kralova Lesna1, Z Tonar, I Malek

  • 1Laboratory for Atherosclerosis Research, Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic. ivka@ikem.cz.

Physiological Research
|December 19, 2015
PubMed

Insights

Perivascular adipose tissue size does not drive atherosclerosis. Instead, macrophage interaction between the arterial wall and surrounding fat is key in coronary heart disease (CHD) development.

Area of Science:

  • Cardiovascular pathology
  • Atherosclerosis research
  • Adipose tissue biology

Background:

  • Current research on perivascular adipose tissue (PVAT) and atherosclerosis relies heavily on CT imaging.
  • Direct analysis of PVAT in explanted hearts offers a more detailed understanding of its role.

Purpose of the Study:

  • To investigate the relationship between PVAT size, macrophage infiltration, and atherogenesis.
  • To compare these factors in patients with coronary heart disease (CHD) and dilation cardiomyopathy (DCMP).

Main Methods:

  • Immunohistochemistry was used to quantify PVAT area, coronary artery wall area, and macrophage ratios (CD68-positive) in both compartments.
  • Analysis included 96 explanted hearts from heart transplant recipients (58 with CHD, 38 with DCMP).

Main Results:

  • No significant difference in PVAT size was observed between CHD and DCMP groups.
  • CHD patients exhibited a significantly higher number of macrophages within the coronary arterial wall.
  • A strong correlation was found between macrophage ratios in the arterial wall and adjacent PVAT in CHD patients, but not in DCMP patients.

Conclusions:

  • PVAT size is not the primary determinant of atherogenesis.
  • Macrophage interaction between the coronary artery wall and surrounding PVAT is a critical mechanism in the development of CHD.
  • This interaction, rather than PVAT volume, may be more significant in the atherosclerotic process.

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