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Mikrobiologische Untersuchungen mit dem neuen Penicillin BRL 17421 (Temocillin)

In vitro evaluation of BRL 17421 (temocillin), a new penicillin

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Zusammenfassung

Die antibakterielle Aktivitätin vitro von BRL 17421 — Temocillin —, eines neuen Penicillins, gegenüber 751 klinischen Isolaten der FamilieEnterobacteriaceae wurde im quantitativen Reihenverdünnungstest vergleichend mit Mezlocillin, Piperacillin, Cefazolin und Cefotaxim untersucht. Zusätzlich wurde die Empfindlichkeit von 211 Mezlocillin-resistenten gramnegativen Stäbchen gegen BRL 17421 bestimmt. Eine gute antibakterielle Wirkung von Temocillin gegen Erreger verschiedenerEnterobacteriaceae-Spezies, Mezlocillin-resistente Stämme mit einbezogen, wurde festgestellt. Die 90% MHK-Werte gegenEscherichia coli, Klebsiella pneumoniae, Citrobacter freundii, Enterobacter cloacae, Salmonella sp.,Yersinia sp. und indolnegativen und indolpositivenProteus-Keimen lagen zwischen 0,5 und 16 mg/l. Mit Konzentrationen von 16 mg/l wurden 80% derSerratia marcescens-Stämme erfaßt, einige Isolate erwiesen sich als resistent. Signifikante Unterschiede zwischen MHK und MBK wurden nicht festgestellt.

Summary

Thein vitro antibacterial activity of BRL 17421 (temocillin), a new penicillin, was determined in quantitative serial broth dilution tests and was compared to that of mezlocillin, piperacillin, cefazolin and cefotaxime against 751 clinical isolates of theEnterobacteriaceae familiy. In addition, the sensitivity of 211 mezlocillin-resistant gram-negative rods to BRL 17421 was also determined. Temocillin exhibited a high level of antibacterial activity against various bacterial species of theEnterobacteriaceae family, including isolates resistant to mezlocillin. The 90% MICs againstEscherichia coli, Klebsiella pneumoniae, Citrobacter freundii, Enterobacter cloacae, Salmonella spp.,Yersinia spp. and indole-negative and indole-positiveProteus strains ranged from 0.5 mg/l to 16 mg/l. Concentrations of 16 mg/l were required to inhibit 80% of theSerratia marcescens strains; some isolates were resistant. No significant difference between MIC and MBC values was observed.

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Malottke, R., Potel, J. Mikrobiologische Untersuchungen mit dem neuen Penicillin BRL 17421 (Temocillin). Infection 11, 47–51 (1983). https://doi.org/10.1007/BF01651358

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  • DOI: https://doi.org/10.1007/BF01651358

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