In vitro Effect of Quinolones on Hydrophobicity of Acinetobacter baumannii
IN VITRO IN VITRO ÚČINOK CHINOLÓNOV NAHYDROFOBICITU ACINETOBACTER ACINETOBACTERBAUMANNII BAUMANNII
Testoval sa vplyv subinhibičných koncentrácií (sub-MICs) (1/4, 1/8, 1/16 a 1/32 MICs) štyrochchinolónových antibiotík na povrchovú hydrofobicitu dvoch kmeňov Acinetobacter baumannii (R1a R2). Hydrofobicita sa hodnotila testom adherencie baktérií na xylén a ich agregáciou v roztokochsíranu amónneho. Norfloxacín v koncentráciách 1/4 a 1/8 MIC znížil hydrofobicitu kmeňa R1a kmeňa R2 v koncentrácii 1/16 MIC. Ciprofloxacín bol účinný pre obidva kmene najmä v koncen-trácii 1/4 MICs. Enoxacín (1/8 MIC) významnejšie redukoval hydrofóbne vlastnosti len kmeňa R2.Ostatné koncentrácie vyššie uvedených antibiotík ako aj všetky testované koncentrácie pefloxacínuprakticky neovplyvnili povrchovú bakteriálnu hydrofobicitu.
Klíčová slova:
chinolóny – subinhibičné koncentrácie – Acinetobacter baumannii – povrchováhydrofobicita
Authors:
A. Hoštacká
Authors place of work:
Ústav preventívnej a klinickej medicíny, Bratislava
Published in the journal:
Čes. slov. Farm., 1999; , 272-275
Category:
Summary
Effects of subinhibitory concentrations (sub-MICs) (1/4, 1/8, 1/16 or 1/32 of the MICs) of fourquinolone antibiotics on surface hydrophobicity of two Acinetobacter baumannii strains (R1 and R2)were tested. Hydrophobicity was evaluated by adherence of bacteria to xylene and their aggregationin ammonium sulphate solutions. Norfloxacin in concentrations of 1/4 or 1/8 of the MIC decreasedhydrophobicity of R1 strain and of R2 strain in concentration of 1/16 of the MIC. Ciprofloxacin wasefficient for both strains mainly in concentration of 1/4 of their MICs. Enoxacin (1/8 MIC) moreeffectively reduced hydrophobic properties only in R2 strain. The other concentrations of theabove-mentioned antibiotics as well as all tested concentrations of pefloxacin pract ically did notaffect bacterial surface hydrophobicity.
Key words:
quinolones – subinhibitory concentrations – Acinetobacter baumannii –surface hydrophobicity
Štítky
Pharmacy Clinical pharmacologyČlánok vyšiel v časopise
Czech and Slovak Pharmacy
1999 Číslo 6
Najčítanejšie v tomto čísle
- The Use of the Concept of the Pharmacophore in Drug Design
- Chalcones and Their Heterocyclic Analogues as Potential Antifungal Chemotherapeutics
- Czech Pharmaceutical Education under German Occupation in 1939–1945
- In vitro Effect of Quinolones on Hydrophobicity of Acinetobacter baumannii