Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1977-11-25
pubmed:abstractText
The in vitro effect of trimethoprim on the inhibitory and bactericidal activity of amikacin against 20 strains each of Klebsiella pneumoniae and Serratia marcescens, 15 strains of Escherichia coli, and 10 strains of Pseudomonas aeruginosa was examined by the checkerboard technique in microtiter plates. Trimethoprim had a synergistic effect on the inhibitory and bactericidal activity of amikacin against the majority of non-pseudomonas strains tested. The mean +/- standard deviation fractional inhibitory concentration indexes were 0.59 +/- 0.19 for the Klebsiella strains, 0.48 +/- 0.18 for the Serratia strains, and 0.60 +/- 0.22 for the E. coli strains tested. Respective mean +/- standard deviation fractional bactericidal concentration indexes for these organisms were 0.55 +/- 0.17, 0.54 +/- 0.29, and 0.61 +/- 0.22. A total of 40% of the Klebsiella strains, 80% of the Serratia strains, and 46% of the E. coli strains had a fractional inhibitory concentration equal to or less than 0.25 for both of these antimicrobial agents and were considered to be synergistically inhibited by the combination. By applying this criterion to bactericidal activity, synergy was demonstrated against 50, 65, and 46% of these strains, respectively. All of the Enterobacteriaceae tested were inhibited by clinically achievable concentrations of trimethoprim and amikacin. Antagonism was not demonstrated with any of the organisms tested. Trimethoprim had no antibacterial effect on the Pseudomonas strains and did not alter amikacin's activity against these bacteria.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0066-4804
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
349-52
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
pubmed:year
1977
pubmed:articleTitle
Synergistic activity of trimethoprim and amikacin against gram-negative bacilli.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.