Journal
CORONARY ARTERY DISEASE
Volume 18, Issue 1, Pages 31-38Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MCA.0b013e328010a474
Keywords
atherosclerosis; coronary artery disease; high-sensitivity C-reactive protein; stable angina; Toll-like receptor
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Objectives Toll-like receptors mediate the innate immune response triggered by pathogen-associated molecular patterns, and atherosclerosis can be considered a state of chronic inflammation whereby immune system cells accumulate within the intima of the arterial wall. The goal of this study was to determine the relation of Toll-like receptors to the extent and severity of coronary artery disease. Methods Angiographic vessel score and Gensini score were used to evaluate the extent and severity of coronary atherosclerosis. Sixty-two consecutive patients with stable angina were grouped as follows: those with insignificant (< 50%) coronary stenosis (group 1), and those with 1 (group 2), 2 (group 3), or 3-vessel disease (group 4). The expression of Toll-like receptor 1, 2, and 4 on circulating CD14+ monocytes was analyzed by flow-cytometry in all patients. Results Toll-like receptor 2 had a positive correlation with the vessel score and Gensini score (1-0.46, P < 0.001; r=0.32, P < 0.02, respectively). Toll-like receptor 4 also positively correlated with the vessel score and Gensini score (r=0.47, P < 0.001; r=0.29, P < 0.05, respectively). No significant correlation existed between the expression of Toll-like receptor 1 and the vessel score or Gensini score. Further, there was no significant correlation between high-sensitivity C-reactive protein and the vessel score or Gensini score. Conclusion These data suggest that Toll-like receptor 2 and 4 expression correlates with the extent and severity of coronary artery disease.
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