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Published on: January 28, 2020

Expression of ubiquitin in peripheral inflammatory cells from patients with coronary artery disease

S-M Chen1, H-X Zhang, Y-G Li

  • 1Department of Cardiology, The First Affiliated Hospital, Medical College, Shantou University, Shantou Guangdong, China.

The Journal of International Medical Research
|December 20, 2008
PubMed

Insights

Ubiquitin expression is elevated in coronary artery disease (CAD) patients, particularly those with acute myocardial infarction (AMI). This suggests ubiquitin plays a critical role in the development and progression of CAD.

Area of Science:

  • Biochemistry
  • Cardiovascular Medicine
  • Molecular Biology

Background:

  • The ubiquitin-proteasome system (UPS) is crucial for protein degradation.
  • Emerging evidence suggests the UPS may be involved in coronary artery disease (CAD) pathogenesis.

Purpose of the Study:

  • To investigate ubiquitin expression in immune cells of patients with varying stages of CAD.
  • To determine the correlation between ubiquitin levels and CAD severity.

Main Methods:

  • Monocytes and lymphocytes were isolated from 120 CAD patients (40 acute myocardial infarction [AMI], 40 unstable angina pectoris [UAP], 40 stable angina pectoris [SAP]) and 40 controls.
  • Ubiquitin expression was analyzed at both mRNA and protein levels.

Main Results:

  • Ubiquitin expression was significantly higher in CAD patients compared to controls at both mRNA and protein levels.
  • Patients with AMI exhibited substantially higher ubiquitin expression than those with SAP and UAP.
  • A positive correlation was observed between ubiquitin expression levels and CAD severity.

Conclusions:

  • Ubiquitin expression increases with the severity of coronary artery disease.
  • Ubiquitin likely plays a critical role in the development and progression of CAD.
  • These findings highlight the potential of targeting the ubiquitin system in CAD management.

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