TABLE 1.

PCR detection of genes encoding AME and MIC distributions in clinical MRSA isolates

Detection by PCR			Total no. of strains	antibiotic	No. of strains for which the MIC (μg/ml) is:
aac(6′)-aph(2")	ant(4′)-I	aph(3′)-III			0.25	0.5	1	2	4	8	16	32	64	128	256	512	1,024	>1,024
				Gentamicin								1		2	3
+	+	+	6	Tobramycin										2	1	3
				Lividomycin														6
				Gentamicin						4	3	2	45	86	16	14	8	5
+	+	−	183	Tobramycin										7	28	92	44	12
				Lividomycin						7	92	77	6	1
				Gentamicin							1	2	3	5	4	2		1
+	−	+	18	Tobramycin						1	2	4	5	5			1
				Lividomycin														18
				Gentamicin						5	6	1	6	5	2	2		1
+	−	−	28	Tobramycin					5	6	1	8	5	1	2
				Lividomycin				5	22	1
				Gentamicin		3
−	+	+	3	Tobramycin											3
				Lividomycin														3
				Gentamicin	6	104	20
−	+	−	130	Tobramycin										7	54	63	6
				Lividomycin						4	74	49	3
				Gentamicin		6	1
−	−	+	7	Tobramycin		6	1
				Lividomycin														7
				Gentamicin		5	1
−	−	−	6	Tobramycin		5	1
				Lividomycin					3	3