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Plasma Proteome Profiles of Stable CAD Patients Stratified According to Total Apo C-III Levels.
Proteomics. Clinical Applications 2018 July 11
PURPOSE: The present research reports the study the of plasma proteome profile of stable coronary artery disease (CAD) patients characterized by different levels of total Apolipoprotein-CIII (Apo C-III), a prognostic marker for cardiovascular risk.
EXPERIMENTAL DESIGN: Two subgroups of CAD patients (n = 52) with divergent concentrations of total circulating Apo C-III (≤ and ≥10 mg dL-1 ) are examined using a shotgun proteomic approach. Validation experiments are also performed with immunochemistry methods including both the patients affected by CAD (n = 119) and the subjects without CAD (CAD-free; n = 58). Results are analyzed by bioinformatics tools and multivariate statistics.
RESULTS: A total of 188 proteins are quantified among the patients. The fold change analysis and the partial least square discriminant analysis show a clear separation of the two groups. Lipoproteins (Apo C-II and Apo E), retinol-binding protein 4, and vitronectin are upregulated in patients with high Apo C-III, while alpha-1 antitrypsin is downregulated.
CONCLUSIONS AND CLINICAL RELEVANCE: In this pilot study, the differential expression of plasma proteins related to different concentrations of Apo C-III is defined, suggesting possible new players involved in the Apo C-III-associated process of arterial damage. Data are available via ProteomeXchange with identifier PXD005973.
EXPERIMENTAL DESIGN: Two subgroups of CAD patients (n = 52) with divergent concentrations of total circulating Apo C-III (≤ and ≥10 mg dL-1 ) are examined using a shotgun proteomic approach. Validation experiments are also performed with immunochemistry methods including both the patients affected by CAD (n = 119) and the subjects without CAD (CAD-free; n = 58). Results are analyzed by bioinformatics tools and multivariate statistics.
RESULTS: A total of 188 proteins are quantified among the patients. The fold change analysis and the partial least square discriminant analysis show a clear separation of the two groups. Lipoproteins (Apo C-II and Apo E), retinol-binding protein 4, and vitronectin are upregulated in patients with high Apo C-III, while alpha-1 antitrypsin is downregulated.
CONCLUSIONS AND CLINICAL RELEVANCE: In this pilot study, the differential expression of plasma proteins related to different concentrations of Apo C-III is defined, suggesting possible new players involved in the Apo C-III-associated process of arterial damage. Data are available via ProteomeXchange with identifier PXD005973.
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