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替卡西林加克拉维酸对632株临床分离株的体外活性

In vitro activity of ticarcillin plus clavulanic acid against 632 clinical isolates.

作者信息

Fuchs P C, Barry A L, Thornsberry C, Jones R N

出版信息

Antimicrob Agents Chemother. 1984 Mar;25(3):392-4. doi: 10.1128/AAC.25.3.392.

Abstract

A total of 632 clinical bacterial isolates were tested for susceptibility to twofold dilutions of ticarcillin alone and in combination with 1, 2, and 4 micrograms of clavulanic acid (CA) (Timentin) per ml by a reference microdilution method. With the addition of CA, ticarcillin MICs were reduced eightfold or greater with 54 of 59 (92%) strains of the family Enterobacteriaceae with ticarcillin MICs of greater than or equal to 64 micrograms/ml. The inhibitory effect of CA on pseudomonads was minimal. Ticarcillin MICs for beta-lactamase-producing Haemophilus influenzae, Neisseria gonorrhoeae, and most Staphylococcus aureus were reduced to less than or equal to 0.5 micrograms/ml when CA was added. For dilution susceptibility testing of ticarcillin-clavulanic acid, dilutions of ticarcillin combined with 2 micrograms of CA per ml is suggested.

摘要

采用参考微量稀释法,对总共632株临床分离细菌进行了测试,以检测其对单独的替卡西林以及与每毫升1、2和4微克克拉维酸(CA)(替门汀)联合使用时两倍稀释液的敏感性。加入CA后,对于59株(92%)替卡西林最低抑菌浓度(MIC)大于或等于64微克/毫升的肠杆菌科菌株中的54株,替卡西林的MIC降低了八倍或更多。CA对假单胞菌的抑制作用极小。当加入CA时,产β-内酰胺酶的流感嗜血杆菌、淋病奈瑟菌和大多数金黄色葡萄球菌的替卡西林MIC降低至小于或等于0.5微克/毫升。对于替卡西林-克拉维酸的稀释敏感性测试,建议使用每毫升含2微克CA的替卡西林稀释液。

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本文引用的文献

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Clavulanic acid, a novel inhibitor of beta-lactamases.克拉维酸,一种新型β-内酰胺酶抑制剂。
Antimicrob Agents Chemother. 1978 Nov;14(5):650-5. doi: 10.1128/AAC.14.5.650.

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