Assessment of systemic inflammation and infective pathogen burden in patients with cardiac syndrome X

The American Journal of Cardiology
G A LanzaFilippo Crea

Abstract

Inflammation plays a key role in coronary artery disease (CAD), but whether it is involved in the pathogenesis of syndrome X (SX) is not known. Thus, we assessed the presence of systemic inflammation in patients with SX and its possible relation to infections from Helicobacter pylori, Chlamydia pneumoniae, cytomegalovirus, and Epstein-Barr virus. We studied 55 patients with SX (57 +/- 8 years old; 27 women), 49 with stable angina and obstructive CAD (56 +/- 8 years old; 24 women), and 60 healthy controls (57 +/- 11 years old; 24 women). Plasma levels of high-sensitivity C-reactive protein and interleukin-1 receptor antagonist were measured in all patients. Infection from Helicobacter pylori, Chlamydia pneumoniae, cytomegalovirus, and Epstein-Barr virus was assessed in 43 patients with SX, 40 patients with CAD, and in 39 controls. Patients with SX had lower serum levels of C-reactive protein than did patients with CAD (4.06 +/- 6.8 vs 5.99 +/- 7.8 mg/L, p = 0.013) but higher levels of C-reactive protein than did controls (1.75 +/- 1.98 mg/L; p = 0.008). Plasma levels of interleukin-1 receptor antagonist were higher in patients with CAD (570 +/- 738 pg/ml) and patients with SX (494 +/- 677 pg/ml) than in controls (254 +/- 174, pg...Continue Reading

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