AIMS: Coronary artery disease (CAD) is described as a range of clinical conditions including myocardial infarction (MI) and unstable angina. Lipid and apolipoprotein profiles together with the study of cholesterol deposit and efflux serve to identify novel pre and post infarct scenarios for the treatment of these patients. In (non-ST elevation myocardial infarction) NSTEMI patients, we analysed both systemic and intracoronary serum ability to accept cholesterol as well as cholesterol efflux capacity (CEC) of monocytes in terms of expression of genes involved in the reverse cholesterol transport (RCT).METHODS AND RESULTS: While HDL-C quantity was similar between systemic and coronary arterial blood, in 21 NSTEMI patients we observed a significant reduction of the prebeta-HDL fraction and the levels of Apolipoproteins AI, AII, B and E in coronary versus systemic serum. These data are complemented with the observed reduction of CEC. On the contrary, compared to systemic arterial monocytes, in coronary microenvironment of NSTEMI patients after myocardial infarction, the monocytes exhibited a higher mRNA expression of nuclear receptor LXRalpha and its targets ABCA1 and APOE, which drive cholesterol efflux capacity.CONCLUSION: In this cross-sectional study we observe that in the immediate post infarction period, there is a spontaneous bona fide ligand-induced activation of the LXR driven cholesterol efflux capacity of intracoronary monocytes to overcome the reduced serum ability to accept cholesterol and to inhibit the post-infarction pro-inflammatory local microenvironment.

Intracoronary monocyte expression pattern and HDL subfractions after non-ST elevation myocardial infarction / M. Cariello, R. Salvia, J. Härdfeldt, M. Piglionica, D. Rutigliano, P. Caldarola, A. Ossoli, M. Vacca, G. Graziano, S. Battaglia, R. Zerlotin, M. Arconzo, L. Crudele, C. Sabbà, L. Calabresi, A. Moschetta. - In: BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR BASIS OF DISEASE. - ISSN 0925-4439. - 1867:6(2021 Jun 01). [10.1016/j.bbadis.2021.166116]

Intracoronary monocyte expression pattern and HDL subfractions after non-ST elevation myocardial infarction

Ossoli, Alice;Calabresi, Laura;
2021-06-01

Abstract

AIMS: Coronary artery disease (CAD) is described as a range of clinical conditions including myocardial infarction (MI) and unstable angina. Lipid and apolipoprotein profiles together with the study of cholesterol deposit and efflux serve to identify novel pre and post infarct scenarios for the treatment of these patients. In (non-ST elevation myocardial infarction) NSTEMI patients, we analysed both systemic and intracoronary serum ability to accept cholesterol as well as cholesterol efflux capacity (CEC) of monocytes in terms of expression of genes involved in the reverse cholesterol transport (RCT).METHODS AND RESULTS: While HDL-C quantity was similar between systemic and coronary arterial blood, in 21 NSTEMI patients we observed a significant reduction of the prebeta-HDL fraction and the levels of Apolipoproteins AI, AII, B and E in coronary versus systemic serum. These data are complemented with the observed reduction of CEC. On the contrary, compared to systemic arterial monocytes, in coronary microenvironment of NSTEMI patients after myocardial infarction, the monocytes exhibited a higher mRNA expression of nuclear receptor LXRalpha and its targets ABCA1 and APOE, which drive cholesterol efflux capacity.CONCLUSION: In this cross-sectional study we observe that in the immediate post infarction period, there is a spontaneous bona fide ligand-induced activation of the LXR driven cholesterol efflux capacity of intracoronary monocytes to overcome the reduced serum ability to accept cholesterol and to inhibit the post-infarction pro-inflammatory local microenvironment.
Cholesterol efflux; Coronary microenvironment; NSTEMI; Preβ-HDL
Settore BIO/14 - Farmacologia
2-mar-2021
BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR BASIS OF DISEASE
Article (author)
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0925443921000491-main.pdf

accesso aperto

1.38 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/824022
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact