title: Increased plasma levels of interleukin-8 in patients with unstable angina pectoris.
abstract: Interleukin-8 is a proinflammatory cytokine with chemo-attractive and major activator properties on neutrophils. The very few studies in literature on the IL-8 behaviour in myocardial ischaemia refer only to acute myocardial infarction. This study investigates the IL-8 behaviour in stable angina pectoris after myocardial ischaemia induced by dipyridamole (14 patients) and in unstable angina pectoris, Braunwald's class III (35 patients). In stable exercise angina following dipyridamole-induced myocardial ischaemia, the plasma IL-8 levels did not increase. In unstable angina pectoris increased plasma IL-8 levels were evidenced in 25 of the 35 patients, after an average interval of 20 +/- 1.2 hours from the last spontaneous episode of angina pectoris. The IL-8 behaviour was different in class III B patients as compared to class III A: only 30% of the patients in class III A presented transient increase of IL-8, while 70% of the class III B presented increased IL-8 with a median value of 900 pg/ml within the first 24 hours from the last spontaneous episode of angina pectoris. The increased plasma IL-8 levels within the first 24 hours from the spontaneous episode could represent a marker of primary angina pectoris, Braunwald's class III B.
authors.affiliation: Medical Clinic I, Cluj-Napoca, Romania.
authors.forename: A
authors.initials: A
authors.lastname: Simiti
authors.forename: L
authors.initials: L
authors.lastname: Vida-Simiti
authors.forename: A
authors.initials: A
authors.lastname: Cristea
authors.forename: N
authors.initials: N
authors.lastname: Olinic
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000787:Angina Pectoris / Q000097:blood / Q000145:classification / Q000175:diagnosis; D000789:Angina, Unstable / Q000097:blood* / Q000145:classification / Q000175:diagnosis; D015415:Biomarkers / Q000097:blood; D004176:Dipyridamole; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D016209:Interleukin-8 / Q000097:blood*; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000097:blood / Q000139:chemically induced; D013997:Time Factors; D014665:Vasodilator Agents
chemical_list: D015415:Biomarkers; D016209:Interleukin-8; D014665:Vasodilator Agents; D004176:Dipyridamole