Coronary artery disease (CAD) is a condition of an inadequate supply of oxygenated blood to a portion of the myocardium. It typically occurs when there is an imbalance between supply and demand of myocardial oxygen. The most common cause of myocardial ischemia is atherosclerotic disease of an epicardial coronary artery or arteries which is sufficient to cause a regional reduction in myocardial blood flow and inadequate perfusion of the myocardium supplied by the involved coronary artery. Fifty CAD subjects (23 females and 27 males) were enrolled in this study in addition to thirty healthy control subjects (13 female and 17 male). This study aimed to measure the serum levels of interleukin IL- 33, C- reactive protein and troponin in CAD and their association with lipid profile by using enzyme-linked immune sorbent assay (ELISA). T results showed that high-density lipoprotein (HDL) was statistically high while differences in cholesterol, triglyceride and low-density lipoprotein (LDL) were statistically non-significant between CAD patients and controls. Moreover, the serum level of IL-33 and CRP were statistically higher in patients than controls, while troponin levels were not significantly different. In addition, the present study demonstrates that IL-33, CRP, and Troponin were not associated with lipid profile. The relationship of IL-33 with CRP and troponin was non-significant.
