1
|
Gariboldi V, Vairo D, Guieu R, Marlingue M, Ravis E, Lagier D, Mari A, Thery E, Collart F, Gaudry M, Bonello L, Paganelli F, Condo J, Kipson N, Fenouillet E, Ruf J, Mottola G. Expressions of adenosine A 2A receptors in coronary arteries and peripheral blood mononuclear cells are correlated in coronary artery disease patients. Int J Cardiol 2016; 230:427-431. [PMID: 28041708 DOI: 10.1016/j.ijcard.2016.12.089] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 11/15/2016] [Accepted: 12/16/2016] [Indexed: 01/02/2023]
Abstract
BACKGROUND Altered coronary blood flow occurs in patients with coronary artery disease (CAD). Adenosine strongly impacts blood flow mostly via adenosine A2A receptor (A2AR) expressed in coronary tissues. As part of a systemic regulation of the adenosinergic system, we compared A2AR expression in situ, and on peripheral blood mononuclear cells (PBMC) in CAD patients. METHODS AND RESULTS Aortic and coronary tissues, and PBMC were sampled in 20 CAD patients undergoing coronary artery bypass surgery and consecutively included. Controls were PBMC obtained from 15 healthy subjects. Expression and activity of A2AR were studied by Western blotting and cAMP measurement, respectively. A2AR expression on PBMC was lower in patients than in controls (0.83±0.31 vs 1.2±0.35 arbitrary units; p<0.01), and correlated with A2AR expression in coronary and aortic tissues (Pearson's r: 0.77 and 0.59, p<0.01, respectively). Basal and maximal cAMP productions following agonist stimulation of PBMC were significantly lower in patients than in controls (120±42 vs 191±65 and 360±113 vs 560±215pg/106 cells, p<0.05, respectively). In CAD patients, the increase from basal to maximal cAMP production in PBMC and aortic tissues was similar (+300% and +246%, respectively). CONCLUSION Expression of A2AR on PBMC correlated with those measured in coronary artery and aortic tissues in CAD patients, A2AR activity of PBMC matched that observed in aorta, and A2AR expression and activity in PBMC were found reduced as compared to controls. Measuring the expression level of A2AR on PBMC represents a good tool to address in situ expression in coronary tissues of CAD patients.
Collapse
Affiliation(s)
- Vlad Gariboldi
- Department of Cardiac Surgery, Timone University Hospital, Marseille, France
| | - Donato Vairo
- UMR MD2, Aix-Marseille University and IRBA, Marseille, France
| | - Régis Guieu
- UMR MD2, Aix-Marseille University and IRBA, Marseille, France; Laboratory of Biochemistry, Timone University Hospital, Marseille, France.
| | - Marion Marlingue
- Laboratory of Biochemistry, Timone University Hospital, Marseille, France
| | - Eléonore Ravis
- Department of Cardiology, Timone University Hospital, Marseille, France
| | - David Lagier
- Department of Anesthesia, Timone University Hospital, Marseille, France
| | - Alissa Mari
- UMR MD2, Aix-Marseille University and IRBA, Marseille, France
| | - Elsa Thery
- Laboratory of Biochemistry, Timone University Hospital, Marseille, France
| | - Frédéric Collart
- Department of Cardiac Surgery, Timone University Hospital, Marseille, France
| | - Marine Gaudry
- Department of Vascular Surgery, Timone University Hospital, Marseille, France
| | - Laurent Bonello
- Department of Cardiology, North University Hospital, Marseille, France
| | - Franck Paganelli
- Department of Cardiology, North University Hospital, Marseille, France
| | - Jocelyne Condo
- UMR MD2, Aix-Marseille University and IRBA, Marseille, France
| | - Nathalie Kipson
- UMR MD2, Aix-Marseille University and IRBA, Marseille, France
| | | | - Jean Ruf
- UMR MD2, Aix-Marseille University and IRBA, Marseille, France
| | - Giovanna Mottola
- UMR MD2, Aix-Marseille University and IRBA, Marseille, France; Laboratory of Biochemistry, Timone University Hospital, Marseille, France
| |
Collapse
|