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Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction
14:19

Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction

Published on: October 14, 2016

12.0K

Differentially Expressed Proteins in Primary Endothelial Cells Derived From Patients With Acute Myocardial Infarction

Sarath Babu Nukala1,2, Luca Regazzoni1, Giancarlo Aldini1

  • 1From the Department of Pharmaceutical Sciences, Università degli Studi di Milano, Milan, Italy (S.B.N., L.R., G.A., M. Carini, A.D.A.).

Hypertension (Dallas, Tex. : 1979)
|August 27, 2019
PubMed

Insights

This study reveals key protein changes in endothelial cells during acute myocardial infarction (AMI), highlighting altered RNA metabolism and oxidative stress. Understanding these mechanisms offers new avenues for treating AMI and related cardiovascular diseases.

Area of Science:

  • Cardiovascular Biology
  • Proteomics
  • Molecular Medicine

Background:

  • Endothelial dysfunction is a key driver of atherothrombosis and acute myocardial infarction (AMI).
  • The precise cellular and molecular mechanisms underlying endothelial dysfunction in AMI remain incompletely understood.
  • Systematic proteomic analysis is needed to elucidate these mechanisms.

Purpose of the Study:

  • To quantitatively profile protein expression in coronary arterial endothelial cells from AMI patients.
  • To identify differentially regulated proteins and pathways involved in endothelial dysfunction during AMI.
  • To explore the role of oxidative stress in AMI-related endothelial dysfunction.

Main Methods:

  • Mass spectrometry-based label-free quantification was employed for protein expression profiling.
  • Proteomic data was analyzed using protein network analysis.
  • Coronary arterial endothelial cells from AMI patients and control subjects were analyzed.

Main Results:

  • 2246 proteins were identified and quantified, with 335 showing differential regulation in AMI.
  • Key altered pathways include RNA metabolism, platelet activation, neutrophil degranulation, amino acid metabolism, cellular stress response, and calcium signaling.
  • Evidence suggests increased oxidant production, decreased antioxidant biomarkers, and reduced antioxidant protein expression, indicating a role for oxidative stress.

Conclusions:

  • This is the first quantitative proteomics study detailing cellular mechanisms of endothelial dysfunction in AMI.
  • The findings provide a deeper understanding of the endothelial proteome in AMI pathophysiology.
  • Identification of novel drug targets for AMI treatment is a potential outcome.

Keywords:
coronary artery diseasemass spectrometryproteins

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