title: Differential expression of cytokines, chemokines and chemokine receptors in patients with coronary artery disease.
abstract: Monocytes/macrophages and lymphocytes have a key role in the pathogenesis of atherosclerosis through the production of inflammatory and anti-inflammatory cytokines. We evaluated mRNA expression and protein production of CCL2, CXCL8, CXCL9, CXCL10, IFN-gamma and IL-10 in vitro as well as the expression of the CCR2 and CXCR3 receptors in peripheral blood mononuclear cells (PBMCs) of patients with coronary artery disease (CAD) and healthy controls in the presence or absence of oxidized LDL (oxLDL). Patients with CAD showed higher constitutive expression of CCL2, CXCL8, CXCL9, CXCL10 and IFN-gamma mRNA and, after stimulation with oxLDL, higher expression of CCL2 and CXCL8 mRNA than the control group. We also detected higher levels of CCL2 and CXCL8 in supernatants of oxLDL-stimulated PBMCs from CAD patients than in corresponding supernatants from controls. Patients with CAD had a higher percentage of constitutive CCR2(+) and CXCR3(+) cells after stimulation with oxLDL. Among CAD patients, the main differences between the stable (SA) and unstable angina (UA) groups were lower IL-10 mRNA production in the latter group. Altogether, our data suggest that PBMCs from CAD patients are able to produce higher concentrations of chemokines and cytokines involved in the regulation of monocyte and lymphocyte migration and retention in atherosclerotic lesions.
authors.affiliation: Department of Clinical Pathology, Faculty of Medical Sciences, State University of Campinas, Campinas, SP, Brazil.
authors.forename: Rômulo Tadeu Dias
authors.initials: RT
authors.lastname: de Oliveira
authors.forename: Ronei Luciano
authors.initials: RL
authors.lastname: Mamoni
authors.forename: José Roberto Matos
authors.initials: JR
authors.lastname: Souza
authors.forename: Juliano Lara
authors.initials: JL
authors.lastname: Fernandes
authors.forename: Francisco José O
authors.initials: FJ
authors.lastname: Rios
authors.forename: Magnus
authors.initials: M
authors.lastname: Gidlund
authors.forename: Otávio Rizzi
authors.initials: OR
authors.lastname: Coelho
authors.forename: Maria Heloisa Souza Lima
authors.initials: MH
authors.lastname: Blotta
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015415:Biomarkers / Q000097:blood; D002478:Cells, Cultured; D018925:Chemokines / Q000096:biosynthesis / Q000235:genetics; D003324:Coronary Artery Disease / Q000097:blood / Q000276:immunology* / Q000473:pathology*; D016207:Cytokines / Q000096:biosynthesis* / Q000235:genetics; D005260:Female; D005786:Gene Expression Regulation / Q000276:immunology; D006801:Humans; D018836:Inflammation Mediators / Q000097:blood; D008297:Male; D008875:Middle Aged; D012333:RNA, Messenger / Q000096:biosynthesis; D019707:Receptors, Chemokine / Q000096:biosynthesis* / Q000235:genetics
chemical_list: D015415:Biomarkers; D018925:Chemokines; D016207:Cytokines; D018836:Inflammation Mediators; D012333:RNA, Messenger; D019707:Receptors, Chemokine