LiF Reduces MICs of Antibiotics against Clinical Isolates of Gram-Positive and Gram-Negative Bacteria

Table 2

MICs (μg/mL) of streptomycin, erythromycin, amoxicillin, and ciprofloxacin alone or in combination with LiF on planktonic Acinetobacter baumannii, Klebsiella pneumoniae, Serratia marcescens, and Streptococcus pneumoniae.

	Antimicrobial agents
MIC (μg/mL)	STP	STP + LiF	ERT	ERT + LiF	AMX	AMX + LiF	CPF	CPF + LiF
Bacterial strain
A. baumannii	128	64	128	16	>128	64	1	0.5
ATCC 19606
K. pneumoniae	1.0	0.5	64	16	16	4	0.125	0.0625
ATCC 13883
S. marcescens	16	8	16	8	8	2	0.25	0.0625
ATCC 43861
S. pneumoniae	0.25	0.03	0.25	0.015	0.06	0.015	0.06	0.015
ATCC 49619

STP: streptomycin, ERT: erythromycin, AMX: amoxicillin, CPF: ciprofloxacin.