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Ciprofloxacin , HK - 3140 , Norfloxacin , Ofloxacin 에 대한 Escherichia coli 저항균주의 특성
이연희,김경순,편희은,박원봉,박명환,김완주 ( Yeon Hee Lee,Kyung Soon Kim,Hee En Pyun,Woon Boong Park,Myung Hwan Park,Wan Joo Kim ) 생화학분자생물학회 1992 BMB Reports Vol.25 No.2
Resistant strains of Escherichia coli were obtained against ciprofloxacin, ofloxacin, norfloxacin and HK-3140. Each resistant strain showed cross-resistance to other quinolones and peniciline-G. To find out the resistant mechanism, lipid and outer membrane proteins of the cells were separated and analyzed with gas chromatography and SDS denaturing gel electrophoresis. Lipid profiles from sensitive and resistant cells showed no big differences while outer membrane protein profiles showed a large variation. Sensitive cells showed better uptake of quinolone than resistant cells suggesting that the resistance against quinolone was resulted from the change in permeability through the outer membrane proteins.