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Cholesterol Efflux Assay
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Published on: March 6, 2012

Reduced leucocyte cholesteryl ester transfer protein expression in acute coronary syndromes

D Ye1, A O Kraaijeveld, R W Grauss

  • 1Division of Biopharmaceutics, Leiden/Amsterdam Center for Drug Research, Leiden University, Leiden, The Netherlands.

Journal of Internal Medicine
|September 12, 2008
PubMed

Insights

Acute coronary syndromes (ACS) reduce leucocyte cholesterol ester transfer protein (CETP) expression. This impairment in CETP production is linked to increased inflammation and may play a role in ACS development.

Area of Science:

  • Cardiovascular Biology
  • Atherosclerosis Research
  • Immunology

Background:

  • Cholesterol ester transfer protein (CETP) is crucial for HDL cholesterol metabolism.
  • Leukocytes, including macrophages, synthesize CETP, but its role in atherosclerosis remains unclear.

Purpose of the Study:

  • To investigate the impact of acute coronary syndromes (ACS) on leukocyte CETP expression.
  • To explore the relationship between leukocyte CETP levels and the inflammatory status in ACS patients.

Main Methods:

  • Peripheral blood mononuclear cells (PBMCs) were isolated from unstable angina pectoris (UAP) patients and healthy controls.
  • CETP expression was analyzed in human PBMCs and in CETP transgenic mice following myocardial infarction.

Main Results:

  • UAP patients showed significantly lower CETP mRNA and protein in PBMCs upon admission compared to controls.
  • CETP levels increased by 180 days post-admission, correlating with reduced inflammation.
  • Myocardial infarction in mice also led to down-regulated leukocyte CETP expression.

Conclusions:

  • Reduced leukocyte CETP expression is associated with UAP in humans and myocardial infarction in mice.
  • Impaired CETP production in leukocytes may contribute to the enhanced inflammatory state seen in ACS pathogenesis.
Abstract

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