Aim
In this study, it was aimed to examine the antibacterial activity of the essential oil components (EOCs), carvacrol (CAR), cinnamaldehyde (CIN), thymol (TH), alpha pinene (α-PN), eucalyptol (EU), limonene (LIM) and the antibiotics, linezolid (LZD), vancomycin (VAN), gentamicin (GEN), ciprofloxacin (CIP), clindamycin (CLN) and penicillin (PEN) against fifty multidrug resistant Corynebacterium striatum strains, and the synergistic interactions of CAR and CIN with the antibiotics against ten randomly selected C. striatum strains to explore synergistic interactions to determine if their combined use could enhance antibiotic activity and potentially reduce resistance.
Methods and Results
The activity of the EOCs and the antibiotics against C. striatum strains isolated from clinical specimens, was examined by broth microdilution method. The synergistic interactions of the EOCs with the antibiotics against ten randomly selected C. striatum strains were determined by checkerboard method. EOCs, CIN and CAR and antibiotics, LZD, VAN, GEN, CIP and CLN were detected to have antibacterial activity against C. striatum strains alone and either synergistic interactions were observed in combinations of the antibiotics with EOCs.
Conclusions
All C. striatum strains were determined to be susceptible to VAN, LZD and resistant to GEN, PEN, CIP and CLN. Synergistic interactions were observed in all combinations of antibiotics tested with CAR and CIN.