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185株对青霉素敏感和耐药的肺炎球菌对新型口服青霉烯类药物WY-49605(SUN/SY 5555)的体外药敏情况,并与它们对青霉素G、阿莫西林、阿莫西林-克拉维酸、头孢克肟、头孢克洛、头孢泊肟、头孢呋辛和头孢地尼的药敏情况进行比较。

In vitro susceptibilities of 185 penicillin-susceptible and -resistant pneumococci to WY-49605 (SUN/SY 5555), a new oral penem, compared with those to penicillin G, amoxicillin, amoxicillin-clavulanate, cefixime, cefaclor, cefpodoxime, cefuroxime, and cefdinir.

作者信息

Spangler S K, Jacobs M R, Appelbaum P C

机构信息

Department of Pathology (Clinical Microbiology), Hershey Medical Center, Pennsylvania 17033.

出版信息

Antimicrob Agents Chemother. 1994 Dec;38(12):2902-4. doi: 10.1128/AAC.38.12.2902.

Abstract

In vitro susceptibility of 185 penicillin-susceptible and -resistant pneumococci to WY-49605, a new oral penem, was compared with susceptibility to penicillin G, amoxicillin with and without clavulanate, cefixime, cefaclor, cefpodoxime, cefuroxime, and cefdinir. WY-49605 yielded MICs for 50 and 90% of the strains tested (MIC50 and MIC90, respectively) of 0.03 and 0.06, 0.125 and 0.5, and 0.5 and 1.0 micrograms/ml, respectively, against penicillin-susceptible, intermediately resistant, and fully resistant strains, respectively. The MIC50 and MIC90 for both amoxicillin and amoxicillin-clavulanate were identical and approximately 1 doubling dilution higher than those for WY-49605 and were < or = 0.06 and 0.125, 0.25 and 1.0, and 1.0 and 1.0 micrograms/ml, respectively. Cephalosporin MIC90s were all significantly higher than those of the latter three compounds for intermediately resistant and fully resistant strains.

摘要

将185株对青霉素敏感和耐药的肺炎球菌对新型口服青霉烯类药物WY - 49605的体外敏感性,与对青霉素G、含和不含克拉维酸的阿莫西林、头孢克肟、头孢克洛、头孢泊肟酯、头孢呋辛和头孢地尼的敏感性进行比较。WY - 49605对青霉素敏感、中度耐药和完全耐药菌株的50%和90%受试菌株(分别为MIC50和MIC90)的MIC值分别为0.03和0.06、0.125和0.5、0.5和1.0微克/毫升。阿莫西林和阿莫西林 - 克拉维酸的MIC50和MIC90相同,比WY - 49605的MIC值高约1倍稀释度,分别为≤0.06和0.125、0.25和1.0、1.0和1.0微克/毫升。对于中度耐药和完全耐药菌株,头孢菌素的MIC90均显著高于后三种化合物。

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