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嗜麦芽窄食单胞菌对单一及联合抗菌药物的敏感性

Susceptibility of Pseudomonas maltophilia to antimicrobial agents, singly and in combination.

作者信息

Felegie T P, Yu V L, Rumans L W, Yee R B

出版信息

Antimicrob Agents Chemother. 1979 Dec;16(6):833-7. doi: 10.1128/AAC.16.6.833.

Abstract

Pseudomonas maltophilia is resistant to most of the commonly used antimicrobial agents including those active against Pseudomonas aeruginosa. The susceptibility of 14 clinical isolates of P. Maltophilia to 18 antimicrobial agents was determined by broth dilution testing. All organisms were susceptible to trimethoprim-sulfamethoxazole (TMP-SMZ), minocycline, and LY127935. A total of 87 and 79% of the organisms were susceptible in vitro to colistin and chloramphenicol, respectively. With the exception of sisomicin, the organisms were resistant to the aminoglycosides. Of 21 combinations of antimicrobials examined for synergy, only the combination of TMP-SMZ with carbenicillin was consistently (86%) synergistic in vitro. Supplementation of the testing media with calcium and magnesium increased the minimal inhibitory concentrations for the aminoglycosides, the penicillins, and TMP-SMZ against P. maltophilia.

摘要

嗜麦芽窄食单胞菌对大多数常用抗菌药物耐药,包括那些对铜绿假单胞菌有效的药物。通过肉汤稀释试验测定了14株嗜麦芽窄食单胞菌临床分离株对18种抗菌药物的敏感性。所有菌株对甲氧苄啶-磺胺甲恶唑(TMP-SMZ)、米诺环素和LY127935敏感。分别有87%和79%的菌株在体外对黏菌素和氯霉素敏感。除西索米星外,这些菌株对氨基糖苷类耐药。在所检测的21种抗菌药物联合用药的协同作用中,只有TMP-SMZ与羧苄西林的联合用药在体外始终表现出协同作用(86%)。在测试培养基中添加钙和镁会增加氨基糖苷类、青霉素类和TMP-SMZ对嗜麦芽窄食单胞菌的最低抑菌浓度。

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