ABSTRACT Background: To evaluate the presence of C. pneumoniae DNA in the tissues and C. pneumoniae DNA antibodies in the blood samples of patients who underwent CABG surgery.Material andMethods:Fifty-one patients <50 years of age were included in the study, and analyzed in two groups according to the intimal thickness ofaorta. C. pneumoniae DNA was evaluated in the tissues collected from the atrium, left internal thoracic artery and ascending aorta of patients.Results: Although, C. pneumoniae DNA was negative in the atrial and left internal thoracic artery tissues of all patients, it was positive in the tissues obtained from the ascending aortas of twelve patients. C. pneumoniae DNA positivity was significantly higher in patients with increased aortic intimal thickness compared to those without increased aortic thickness.Conclusion:The question whether C. pneumoniaeis triggering atherosclerosis or is involved as a super-infection could not be clarified.
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