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새로운 카바페넴계 항생물질인 DWP20418의 In vitro 항균작용
김지연(Ji Yeon Kim),최문정(Moon Jung Choi),박남준(Nam Joon Park),임성수(Seong Soo Yim),변영석(Young Seok Byun),유영효(Young Hyo Yu),박명환(Myung Hwan Park) 대한약학회 1997 약학회지 Vol.41 No.2
The in vitro antibacterial activity of DWP20418 (1R, 5S, 6S)-6-[1-(R)-Hydroxyethyl)-l-methyl-2-[(2S,4S)-2-(piperazinylcarbonyl)-1-(R)-hydroxyethyl)pyrrolidine-4-thio]carbapen-2-em-3-carboxylic acid), a new carbapenem antibiotic, was compared with those of imipenem (IPM) and meropenem (MEPM). DWP20418 was comparable or slightly more superior to MEPM against gram-positive bacteria, and it showed more potent activity to IPM against gram-negative bacteria. DWP20418 was particularly active against MRSA, and its MIC90 of methicillin-susceptible S. aureus, low methicillin-resistant S. aureus and high methicillin-resistant S. aureus were 0.391, 25 and 50 micro g/ml, respectively. With a view of MIC90, DWP20418 was comparable than the other carbapenems against P. aeruginosa and E. coli isolates. The activity of DWP20418 was not affected in the presence of Mg2+, Ca2+ or horse serum. But inoculum size and alterations in pH of medium affected its antibacterial activity. DWP20418 showed rapidly bactericidal activity within 1h, and regrowth was not observed even incubation of 24hrs at the concentrations near the MIC.