The sensitivity of strains of microorganisms isolated from bioptates of atherosclerotic plaques to different antimicrobials was studied.For this study, the samples of atherosclerotic plaques from a group of patients that underwent elective carotid endarterectomy were used.Among 137 strains of coagulase-negative staphylococci 13.1 % of all isolates were methicillin-resistant, but all were sensitive to vancomycin, linezolid and moxifloxacin.
Some strains of staphylococci possessed the resistance Brace to erythromycin and tetracycline (16.3 %) and (13.9 %) respectively.The greatest resistance among coagulase-negative staphylococci to chloramphenicol (43.
4 %) were identified.The high sensitivity of such bacteria to clindamycin, ciprofloxacin and gentamycin (92.6, 92.0 and 90.
5 % respectively) were established.Among 197 isolates of Propionibacterium acnes all strains were highly sensitive to all antibiotics (amoxicillin, amoxicillin-clavulanic acid, benzylpenicillin, imipenem, clindamycin, piperacyllin, piperacyllin/tazobactam, ticarcillin, ticarcillin-clavulanic acid, chloramphenicol amd cefoxitin) which were tested.As exception was Dishwasher Control Panel Insert a metronidazole resistance to which bacteria are naturally refractory.The data obtained confirm that only small part of coagulase-negative staphylococci possessed the resistance to methicillin (13.
1 %), but many among them demonstrated a high level of resistance to chloramphenicol.Between the strains of propionibacteria the acquired resistance to different antibacterials was not revealed.