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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1996-4-3
pubmed:abstractText
Five Acinetobacter baumannii strains of various phenotypes were selected on the basis of the results of a national survey in France in 1991. beta-Lactamases in Acinetobacter isolates were characterized by isoelectrofocusing. We carried out a 24 h time-kill study to assess the bactericidal effect of antibiotic alone or in combination against A. baumannii strains. The initial inoculum was 10(6) cfu/mL. Antibiotics were tested at MIC x 2 when an antibiotic was tested alone and at the MIC for each combination including ticarcillin, piperacillin, ceftazidime or imipenem with or without amikacin or netilmicin and/or beta-lactamase inhibitors. Concentration of inhibitors were: 2 mg/L for clavulanic acid, 4 mg/L for tazobactam and 8 mg/L for sulbactam. Sulbactam and tazobactam showed an intrinsic in-vitro activity against strains susceptible to ticarcillin. A complete killing at 24 h was observed when beta-lactams were combined with amikacin in comparison with antibiotics alone. Synergy was lost when the strain presented a low resistance level to beta-lactams or aminoglycosides except for ticarcillin. Combinations of sulbactam with ticarcillin showed the best bactericidal activity against strains multiresistant to beta-lactams.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0305-7453
pubmed:author
pubmed:issnType
Print
pubmed:volume
36
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
619-29
pubmed:dateRevised
2005-11-17
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Bactericidal in-vitro activity of beta-lactams and beta-lactamase inhibitors, alone or associated, against clinical strains of Acinetobacter baumannii: effect of combination with aminoglycosides.
pubmed:affiliation
Department of microbiology, Bichat-Claude Bernard University, Paris, France.
pubmed:publicationType
Journal Article