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Query: UNIPROT:Q96DG6 (Pseudomonas)
 76,258 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The predictability of synergy with strains of Pseudomonas aeruginosa highly resistant to gentamicin in combination with carbenicillin has been controversial. 30 clinical isolates of P. aeruginosa resistant to gentamicin and/or carbenicillin were tested by checker-board technique. 14 were found to be highly resistant to gentamicin (minimal inhibitory concentration MIC greater than or equal to 128 microgram/ml) and/or carbenicillin (MIC greater than or equal to 512 microgram/ml). Of these 14, 4 isolates showed synergy. 10 of 16 isolates with moderate resistance demonstrated synergy. It is concluded that the level of resistance to gentamicin with P. aeruginosa cannot be used in predicting whether synergy will occur.
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PMID:Synergy studies with Pseudomonas aeruginosa resistant to gentamicin and/or carbenicillin. 9 57

Diphenhydramine (N,N-dimethyl-2-diphenyl-methoxy-ethylamine) [N,N-dimethyl-2-(diphenylmethoxy)-ethylamin] (DPH) is a well-known local anaesthetic and an antagonist of both acetylcholine and histamine. We tested its antibacterial efficacy by means of three different investigation methods, i.e. microcalorimetry, continuous density measurement and the microdilution test to find out the MIC of this compound against various bacteria. DPH inhibits the growth of E. coli and Klebsiella strains at a concentration of 0.18% of Staphylococcus aureus haemolyticus at 0.37%, of Pseudomonas aeruginosa at 0.75% and Streptococcus faecalis strains at 1.5%. The results of microcalorimetry and continous density measurements showed that the addition of 0.2% DPH to a broth with growing bacteria interferes very quickly with cell metabolism and stops further reproduction. The microcalorimetric findings were carried out with Staphylococcus aureus haemolyticus strain No. 13,665 an- the E. coli strain No. 3579.
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PMID:[The antibacterial activity of diphenhydramine (author's transl)]. 9 81

The in-vitro activity of nalidixic acid and pipemidic acid was investigated in a combined study in 450 freshly isolated bacterial strains using the agar dilution test. Gram-positive cocci were resistant to both substances except for a few pipemidic acid sensitive staphylococci. Both substances had good antibacterial activity in the gram-negative spectrum. However, the MIC values of pipemidic acid were generally clearly lower than those of nalidixic acid. Only pipemidic acid showed activity against Pseudomonas aeruginosa. Thus the in-vitro results showed that pipemidic acid has clear-cut and valuable advantages for the treatment of urinary tract infections when compared with nalidixic acid.
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PMID:[Antibacterial in-vitro activity of pipemidic acid and nalidixic acid (author's transl)]. 11 May 74

The susceptibility of 100 blood culture isolates of Pseudomonas aeruginosa observed during 4 1/2 years was tested for tobramycin, netilimicin, gentamicin, amikacin, pirbenicillin, ticarcillin and carbenicillin, singly and in combination. For aminoglycosides, the agar MICs were twofold to threefold greater than tube dilution MICs but for the penicillins they were similar. For aminoglycosides and ticarcillin, the MBCs were twofold greater than the tube dilution MICs. The MBCs were not achieved at concentrations as high as 512 micrograms/ml for 40% of the isolates for pirbenicillin and for 10% for carbenicillin. Tobramycin and pirbenicillin had the lowest MICs for the aminoglycosides and penicillins, respectively. Synergism was tested and observed between tobramycin + ticarcillin and amikacin + ticarcillin. No overall increase in resistance to gentamicin or carbenicillin was seen from 1974 to 1977. However, patients given repeated courses of gentamicin had more resistant strains. Following the administration of 1.5 mg/kg/dose of gentamicin, peak serum concentrations failed to achieve the MIC for the microorganism in 22% of the patients. The MIC was achieved in all patients receiving the same dose of tobramycin. The overall fatality rate was 67% with one third of the patients dying within 36 hr. There was no relationship of patient fatality rate and MIC for the microorganism. Although in the rapidly fatal group of all patients receiving inappropriate therapy died, the fatality rates of appropriately or inappropriately treated patients in the ultimately fatal and nonfatal groups were similar. Underlying host disease was the major determining factor in patient survival.
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PMID:Pseudomonas aeruginosa bacteremia: susceptibility of 100 blood culture isolates to seven antimicrobial agents and its clinical significance. 11 Aug 92

Of 422 clinical strains of Pseudomonas aeruginosa, 23 (5.5%) were resistant to gentamicin; 19 were also resistant to tobramycin and sisomycin, and one was resistant to tobramycin, sisomycin and amikacin. Of the gentamicin-resistant strains, 20 were also resistant to kanamycin. Sixteen strains with a high level of resistance to gentamicin (MIC greater than 160 microgram/ml) transferred all their resistance determinants to recipient strains of P. aeruginosa and four transferred some resistance determinants to P. aeruginosa but none transferred resistance to a recipient strain of E. coli K12. These results show that gentamicin resistance in strains of P. aeruginosa isolated in Auckland is mediated by R plasmids.
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PMID:Transfer of plasmid-mediated antibiotic resistance in strains of Pseudomonas aeruginosa isolated in Auckland. 11 54

The in vitro effects of Bay k 4999 in combination with gentamicin, tobramycin, amikacin sisomicin and netilmicin in bacteriostatic (MIC) and bactericidal (MBC) concentrations were compared using the checkerboard dilution technique against 20 different strains of Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae and indole-positive-negative Proteus species. On average 63% of Bay k 4999-aminoglycoside (AG) combinations inhibited Pseudomonas, Proteus and Klebsiella strains additively and/or synergistically in bacteriostatic as well as in bactericidal concentrations as compared to only 14% additive or synergistic activity on E. coli. 35% of the combinations tested proved to be synergistic in K. pneumoniae, 20% in Proteus, 13% in Pseudomonas, but only 5% in E. coli. No significant differences between various Bay k 4999-AG combination effects could be demonstrated.
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PMID:In vitro efficacy of Bay k 4999, a new ureido-penicillin, in combination with aminoglycosides against Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae and Proteus strains. 11 78

The authors have studied on 20 bacterial strains (5 Pseudomonas aeruginosa, 5 Escherichia coli, 5 Klebsiella and 5 Serratia) the bactericidal kinetics of 4 aminoglycoside antibiotics: amikacin, gentamicin, kanamycin and tobramycin. The antibiotic concentrations used for this work were 1.5 times the MIC for each strain previously measured in a liquid medium. The action of the aminoglycoside antibiotics shows three phases. The third phase describes a part of less susceptible bacterial population. It permits the comparison of the 4 antibiotics. Amikacin shows the best activity, followed by gentamicin, kanamycin and tobramycin.
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PMID:[Comparison of bactericidal effects of four aminoglycoside antibiotics: amikacin, gentamicin, kanamycin and tobramycin (author's transl)]. 11 83

By means of MBC and MIC determinations, the sensitivity tests of some pathogenic strains of Pseudomonas aeuruginosa were determined. Moreover it has been found production of H2S and higher amounts of piocianyne in resistant strains compared with sensible ones.
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PMID:[Antibiotic sensitivity of some Pseudomonas aeruginosa strains]. 12 37

2-(5-Nitro-2-imidazolylmethylene)-1-indanones, -1-tetralones, and -acetophenones substituted by aminoalkoxy groups and related compounds (41-69, table ii) were synthesized and their antimicrobial activities were evaluated (table iii). Some of these compounds (e.g. 47, 52, and 59) suprisingly exhibited a broad antibacterial spectrum including Proteus species and Pseudomonas aeruginosa. Extraordinary antitrichomonal activities could also be observed in vitro (MIC of compound 59, 0.0004 pg/ml) and six of the title compounds (48, 49, 52, 58, 64, 66) displayed in vivo activity in mice against Trichomonas vaginalis comparable to that of metronidazole (70).
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PMID:Chemotherapeutic nitroheterocycles. 18. 2-(5-Nitro-2-imidazolylmethylene)-1-indanones, -1-tetralones, and -acetophenones substituted by aminoalkoxy groups. 16 85

The effect of antibiotics on phagocytosis and killing of Pseudomonas aeruginosa by rabbit polymorphonuclear leukocytes was studied. Carbenicillin and sulbenicillin, when added to an incubation medium at a concentration as low as 1/16 MIC, increased phagocytosis and killing of P. aeruginosa by PMN. Meanwhile, gentamicin and 3',4'-dideoxykanamycin B gave no influence on the PMN activity, and polymyxin B and colistin enhanced the activity only at MIC. The PMN activity was not facilitated even when the cells of P. aeruginosa had been pretreated with antibiotics. The bactericidal activity of PMN decreased after sonification, but was restored following addition of carbenicillin.
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PMID:Effect of antibiotics on the phagocytosis and killing of Pseudomonas aeruginosa by rabbit polymorphonuclear leukocytes. 17 84


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