Prevalence, characterization and antibiotic resistance of enterococci from traditional cheeses in Turkey

Figures & data

Figure 1. Dendrogram of the relationships between strains of enterococci based on the homologies of 16S rRNA sequence analysis. The dendrogram was constructed using the maximum-likelihood method with the MEGA 5.10 software.

Table 1. Antimicrobial resistance profiles of enterococcus strains to 12 antimicrobial agents^a.

	Enterococcus faecalis (n:125)						Enterococcus faecium (n:88)						Total (n:213)
	R^b		I^b		S^b		R		I		S		R		I		S
Antimicrobial Agent	n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%
Kanamycin	125	100	0	0.0	0	0.0	85	96.6	0	0.0	3	3.4	210	98.6	0	0.0	3	1.4
Erythromycin	23	18.4	102	81.6	0	0.0	17	19.3	71	80.7	0	0.0	40	18.8	173	81.2	0	0.0
Gentamicin	5	4.0	0	0.0	120	96.0	3	3.4	0	0.0	85	96.6	8	3.8	0	0.0	205	96.2
Tetracycline	18	14.4	14	11.2	93	74.4	7	8.0	3	3.4	78	88.6	25	11.7	17	8.0	171	80.3
Vancomycin	0	0.0	9	7.2	116	92.8	0	0.0	0	0.0	88	100	0	0.0	9	4.2	204	95.8
Nalidixic acid	125	100	0	0.0	0	0.0	88	100	0	0.0	0	0.0	213	100	0	0.0	0	0.0
Streptomycin	0	0.0	5	4	100	96.0	3	3.4	0	0.0	85	96.6	3	1.4	5	2.4	205	96.2
Penicillin G	9	7.2	0	0.0	116	92.8	3	3.4	0	0.0	85	96.6	12	5.6	0	0.0	201	94.4
Ampicillin	51	40.8	0	0.0	74	59.2	53	60.2	0	0.0	35	39.8	104	48.8	0	0.0	109	51.2
Chloramphenicol	9	7.2	18	14.4	98	78.4	0	0.0	11	12.5	77	87.5	9	4.2	29	13.6	175	82.2
Rifampicin	97	77.6	14	11.2	14	11.2	70	79.6	3	3.4	15	17.0	167	78.4	17	8.0	29	13.6
Ciprofloxacin	51	40.8	60	48.0	14	11.2	46	52.2	35	39.8	7	8.0	97	45.5	95	44.6	21	9.9

^aThe diameters of the zones were compared with the diameters of the Clinic Laboratory Standards Institute (CLSI 2011)

^bS Susceptible, I Intermediate resistant, R Resistant

Table 2. Multiple antibiotic resistance in Enterococcus strains excluding nalidixic acid.

	Enterococcus faecalis (n:125)	Enterococcus faecium (n:88)	Total (n:213)
Resistance to 2 antimicrobial	23	25	48
Resistance to 3 antimicrobial	42	21	63
Resistance to 4 antimicrobial	28	35	63
Resistance to 5 antimicrobial	18	7	25
Total	111	88	199