[Antibacterial activities of piperacillin for several resistant strains from respiratory infections--in reference to MRSA, PRSP, BLNAR and P. aeruginosa].
Copyright policy )[Antibacterial activities of piperacillin for several resistant strains from respiratory infections--in reference to MRSA, PRSP, BLNAR and P. aeruginosa].
We investigated antibacterial activities of piperacillin (PIPC) for several resistant strains of bacteria isolated from patients with respiratory infections from 1998 to 1999 in comparison with reference drugs and obtained the following results: 1. The majority of methicillin resistant strains of Staphylococcus aureus (MRSA) showed high resistance to beta-lactam antibiotics including PIPC. 2. MIC90 of PIPC was 1 and 4 micrograms/ml for penicillin intermediate and penicillin resistant strains of Streptococcus pneumoniae (PISP/PRSP), respectively. 3. MIC90 of PIPC was 0.25 microgram/ml for beta-lactamase negative ampicillin resistant strains of Haemophilus influenzae (BLNAR), showing higher antibacterial activity than the reference drugs. 4. PIPC exhibited the MICs of 8 micrograms/ml or less in 19 out of 40 IPM resistant (MIC > or = 16 micrograms/ml) strains of Pseudomonas aeruginosa. From these results, PIPC is proved to possess extremely favorable antibacterial activities for BLNAR, and it was suggested that PIPC might be a drug of choice even for PISP/PRSP and IPM resistant strains of P. aeruginosa.
Piperacillin, Staphylococcus aureus, Penicillin Resistance, Microbial Sensitivity Tests, Penicillins, Haemophilus influenzae, beta-Lactamases, Streptococcus pneumoniae, Pseudomonas aeruginosa, Humans, Ampicillin, Methicillin Resistance, Respiratory Tract Infections
Piperacillin, Staphylococcus aureus, Penicillin Resistance, Microbial Sensitivity Tests, Penicillins, Haemophilus influenzae, beta-Lactamases, Streptococcus pneumoniae, Pseudomonas aeruginosa, Humans, Ampicillin, Methicillin Resistance, Respiratory Tract Infections
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