Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| predictors of endocarditis in isolates from cultures of blood following dental extractions in rats with periodontal disease. | rats with periodontitis and catheter-induced aortic valve vegetations underwent dental extractions. cultures of blood obtained 1 min later showed polymicrobial bacteremia in 19 of 19 rats, mostly due to viridans streptococci (18 of 19), morganella (15 of 19), group g streptococci (13 of 19), and staphylococcus aureus (10 of 19). viridans streptococci circulated in higher numbers than did group g streptococci and s. aureus (p less than .01). three days after dental extractions, 18 of 20 rats had ... | 1988 | 3361156 |
| a survey of the aerobic bacteria in the feces of captive raptors. | feces of 47 captive raptors belonging to the order falconiformes or strigiformes were cultured for bacteria. gram-negative bacteria, which were cultured from the feces of 45 of the 47 raptors, were the most common isolates. a wide variety of species were identified, including a newly described genus (moellerella wisconsensis), two newly described species (escherichia fergusonii and proteus penneri), and a member of a newly described enteric group (cdc enteric group 41). additional organisms iden ... | 1988 | 3382380 |
| the phylogenetic origin of the bifunctional tyrosine-pathway protein in the enteric lineage of bacteria. | because bifunctional enzymes are distinctive and highly conserved products of relatively infrequent gene-fusion events, they are particularly useful markers to identify clusters of organisms at different hierarchical levels of a phylogenetic tree. within the subdivision of gram-negative bacteria known as superfamily b, there are two distinctive types of tyrosine-pathway dehydrogenases: (1) a broad-specificity dehydrogenase (recently termed cyclohexadienyl dehydrogenase [cdh]) that can utilize ei ... | 1988 | 3386529 |
| cefotaxime combined with selective decontamination in long term intensive care unit patients. virtual absence of emergence of resistance. | emergence of bacterial resistance to antimicrobial agents was studied during a period of 30 months of continuous use of parenteral cefotaxime combined with oral non-absorbable polymyxin e and tobramycin (selective decontamination) in a surgical intensive care unit (icu). no increase in drug-resistance micro-organisms was found. colonisation of the oropharyngeal cavity or intestine or both by strains resistant to polymyxin e occurred in 8% of patients (invariably proteus and morganella species). ... | 1988 | 3396487 |
| chronic morganella morganii arthritis in an elderly patient. | this report describes the first case of septic arthritis caused by morganella morganii. the elderly patient's course of pyoarthritis was atypical in its benign clinical presentation, having little inflammatory response over a prolonged period. septic arthritis should be considered as a possible diagnosis in all elderly patients with joint effusions. | 1988 | 3410954 |
| urease activity of proteus penneri. | ten strains of proteus penneri isolated from geographically diverse laboratories were tested for urease activity. cell lysates from urea-induced cells had a mean activity of 4.9 +/- 4.1 mumol of nh3 per min per mg of protein. on nondenaturing 6% polyacrylamide activity gels, the enzymes of p. penneri had very similar electrophoretic mobilities within species and within the proteus genus but were distinct from the ureases of providencia and morganella species. on lower-percentage polyacrylamide, ... | 1987 | 3429622 |
| comparative in vitro activities of 13 antimicrobial agents against morganella-proteus-providencia group bacteria from urinary tract infections. | we examined 741 urinary tract isolates of the morganella-proteus-providencia group, including the recently defined species proteus penneri, for susceptibilities to aminoglycosides, semisynthetic penicillins, and cephalosporins. the data emphasize the importance of identification to the species level on the basis of marked species differences in patterns of susceptibility. | 1987 | 3435110 |
| comparative in vitro activity of the two new oral cephalosporin metabolites ro 19-5247 and ro 15-8074. | a total of 629 clinical strains of gram positive and gram negative bacteria were tested for their susceptibility to ro 19-5247, ro 15-8074, and other antimicrobial agents. both ro 19-5247 and ro 15-8074 had good activity against strains of enterobacteriaceae; however, resistance was found among some strains of enterobacter, citrobacter, klebsiella and morganella spp. both compounds showed moderate to poor active against acinetobacter spp., pseudomonas aeruginosa, staphylococci and streptococcus ... | 1987 | 3436316 |
| numerical analysis of electrophoretic protein patterns of providencia rustigianii strains from human diarrhoea and other sources. | twenty strains of providencia rustigianii (including the type strain of prov. friedericiana) have been characterized by one-dimensional sds-page of cellular proteins. they comprised 12 strains (almost exclusively associated with the intestinal tract) from humans, plus eight largely from the intestinal tract of pig, penguin and environmental sources. the protein patterns, which contained 45-50 discrete bands, were highly reproducible and were used as the basis for two numerical analyses. in the f ... | 1987 | 3436856 |
| comparative antibacterial activity of a new oral cephalosporin, bmy-28100. | bmy-28100 is a new oral cephalosporin which had in vitro activity superior to that of cephalexin and cefaclor against staphylococci, beta-hemolytic streptococcal species, and streptococcus pneumoniae. it inhibited beta-lactamase-producing haemophilus influenzae, neisseria gonorrhoeae, 50% of streptococcus faecalis isolates, listeria monocytogenes, and 50 to 75% of escherichia coli and klebsiella species at less than or equal to 8 micrograms/ml, but high producers of beta-lactamase were resistant ... | 1987 | 3495236 |
| in vitro activity and beta-lactamase stability of a new penem, cgp 31608. | the in vitro activity of cgp 31608, a new penem, against aerobic and anaerobic organisms was evaluated and compared with those of other beta-lactams. cgp 31608 inhibited escherichia coli, klebsiella pneumoniae, k. oxytoca, proteus mirabilis, citrobacter diversus, and salmonella, shigella, aeromonas, and yersinia spp. with mics for 50% of the strains (mic50s) of 2 to 4 micrograms/ml and mic90s of 4 micrograms/ml, compared with cefotaxime, ceftazidime, aztreonam, and imipenem mics of less than 0.2 ... | 1987 | 3496845 |
| comparative activity of ceftizoxime against aminoglycoside-resistant aerobic gram-negative bacilli. | the in vitro activity of ceftizoxime was compared with that of other beta-lactam antibiotics against 331 aminoglycoside (ag)-resistant clinical isolates. two hundred and six ag-resistant, beta-lactamase producing, r-plasmid harbouring enterobacteriaceae strains had mics ranging from 0.0125 to 0.063 mg/l. ag-resistant escherichia coli (36 strains) and klebsiella pneumoniae (19) had mic 90 values of 8 mg/l. proteus rettgeri and p. vulgaris as well as morganella morganii, resistant to several ags, ... | 1987 | 3497792 |
| in vitro activity of cefixime and six other agents against nosocomial pathogens of the enterobacteriaceae family. | cefixime, a broad-spectrum, orally active cephalosporin, was more active in vitro than ampicillin, cefaclor, cephalothin, and trimethoprim/sulfamethoxazole against 194 nosocomial pathogens of the family enterobacteriaceae. activity was especially good against klebsiella spp, proteus spp, serratia spp, and providencia stuartii. although gentamicin had equivalent or better activity against citrobacter spp, enterobacter spp, escherichia coli, and morganella morganii, all 23 of the gentamicin-resist ... | 1987 | 3498702 |
| successful treatment of morganella morganii meningitis with pefloxacin mesylate. | 1987 | 3480886 | |
| the secreted hemolysins of proteus mirabilis, proteus vulgaris, and morganella morganii are genetically related to each other and to the alpha-hemolysin of escherichia coli. | secreted hemolysins were extremely common among clinical isolates of proteus mirabilis, proteus vulgaris, and morganella morganii, and hemolytic activity was either cell associated or cell free. southern hybridization of total dna from hemolytic isolates to cloned regions of the escherichia coli alpha-hemolysin (hly) determinant showed clear but incomplete homology between genes encoding production of hemolysins in the four species. one of the two e. coli secretion genes, hlyd, hybridized only w ... | 1987 | 3549692 |
| differences in antimicrobial susceptibilities of clinical isolates in saudi arabia and the united states. | in vitro antimicrobial susceptibilities of 3,530 clinical isolates at king faisal specialist hospital and research center (kfsh), in riyadh, saudi arabia, were compared with those of 11,041 bacterial isolates at two hospitals of comparable size in the united states. the gram-negative bacteria, especially escherichia coli, proteus-morganella group, enterobacter sp, serratia marcescens, and pseudomonas aeruginosa were generally more resistant to ampicillin, carbenicillin, cephalosporin, gentamicin ... | 1987 | 3586042 |
| successful joint arthroplasty following proteus morganii (morganella morganii) septic arthritis: a four-year study. | proteus morganii (morganella morganii) is an uncommon cause of septic arthritis. we describe a 53-year-old woman with severely deforming rheumatoid arthritis, who developed an indolent septic arthritis secondary to infection with this organism. she was treated with antibiotics and closed drainage, and subsequently, underwent successful arthroplasty. she continues to do well 4.5 years later. this patient's disease course shows that gram-negative septic arthritis, effectively treated, does not pre ... | 1987 | 3593440 |
| diversity of the phosphoenolpyruvate/glucose phosphotransferase system in the enterobacteriaceae. | the presence of the phosphoenolpyruvate glucose phosphotransferase entry routes was studied in 97 genospecies of enterobacteriaceae. phosphoenolpyruvate(pep)-dependent phosphorylation of alpha-methyl-d-glucoside and 2-deoxyglucose was evidenced in 72 species (group i organisms), suggesting the presence of both the iiglc (formerly ii-bglc/iiiglc) and iiman (formerly ii-b/ii-aman) entry routes. erwinia amylovora, budvicia aquatica and all species of leminorella and proteus (as defined by dna relat ... | 1987 | 3606872 |
| genetic and biochemical diversity of ureases of proteus, providencia, and morganella species isolated from urinary tract infection. | bacterial urease, particularly from proteus mirabilis, has been implicated as a contributing factor in the formation of urinary and kidney stones, obstruction of urinary catheters, and pyelonephritis. weekly urine specimens (n = 1,135) from 32 patients, residing at two chronic-care facilities, with urinary catheters in place for greater than or equal to 30 days yielded 5,088 phenotypically and serotypically diverse bacterial isolates at greater than or equal to 10(5) cfu/ml. a total of 86% of sp ... | 1987 | 3623698 |
| preliminary antimicrobial susceptibility interpretive criteria for cefetamet (ro 15-8074) and cefteram (ro 19-5247) disk tests. | preliminary interpretive zone criteria were calculated for cefetamet (ro 15-8074) and cefteram (ro 19-5247) by using 10- and 30-micrograms disks and three possible mic susceptibility breakpoints. absolute interpretive agreement between mics and zone size criteria ranged from 91.8 to 97.2%. very major errors (false susceptibility) were less than or equal to 1.2% for both cephalosporin disk tests. morganella morganii strains appeared to produce the highest rates of very major interpretive errors w ... | 1987 | 3654953 |
| in vitro activity of a new broad spectrum, beta-lactamase-stable oral cephalosporin, cefixime. | cefixime is a new orally absorbed iminomethoxy, aminothiazolyl cephalosporin. it inhibits the majority, 90%, of streptococcus pneumoniae, streptococcus pyogenes, branhamella catarrhalis, haemophilus influenzae, escherichia coli, klebsiella pneumoniae, proteus mirabilis and neisseria gonorrhoeae at concentrations less than or equal to 0.25 micrograms/ml. it inhibits 90% of the other members of the enterobacteriaceae at concentrations less than 1 microgram/ml, with the exception of some strains of ... | 1987 | 3696836 |
| induction of the beta-lactamases of a strain of pseudomonas aeruginosa, morganella morganii and enterobacter cloacae. | 1987 | 3106306 | |
| purification and properties of pyridoxal-5'-phosphate-dependent histidine decarboxylases from klebsiella planticola and enterobacter aerogenes. | histidine decarboxylases from klebsiella planticola and enterobacter aerogenes were purified to homogeneity and compared with the histidine decarboxylase from morganella morganii. all three enzymes required pyridoxal 5'-phosphate as a coenzyme, showed optimal activity at ph 6.5, decarboxylated only histidine among the amino acids derived from protein, and were tetramers or dimers of identical subunits. amino-terminal sequences of the three enzymes showed up to 81% homology through residue 33, bu ... | 1987 | 3114230 |
| incidence of inducible beta-lactamases in gram-negative septicemia isolates from twenty-nine european laboratories. european study group on antibiotic resistance. | in 1984 the european study group on antibiotic resistance (esgar), which is made up of 29 laboratories in 12 european countries, consecutively collected gram-negative bacilli and staphylococci isolates from blood and using the microdilution method performed susceptibility testing with 11 beta-lactam antibiotics. a total of 2,578 isolates were collected; 68% were gram-negatives and 32% staphylococci. pseudomonas spp. accounted for 12% of the strains, enterobacter spp. 7%, serratia spp. 3%, indole ... | 1987 | 3117535 |
| urease-positive bacteriuria and obstruction of long-term urinary catheters. | long-term urethral catheterization (greater than or equal to 30 days), a management technique for urinary incontinence, results in polymicrobial bacteriuria. we frequently found urease-producing bacteria: of 1,135 weekly urine specimens from 32 long-term-catheterized patients, 86% had urease-positive bacterial species at greater than or equal to 10(5) cfu/ml. the most common species were proteus mirabilis and morganella morganii, each found in over half the specimens. p. mirabilis, but not other ... | 1987 | 3320089 |
| microbiological perspectives of co-trimoxazole. | trimethoprim-sulfamethoxazole in vitro activity was compared with ampicillin, tetracycline, sulfonamide and trimethoprim against isolates of 24 gram-negative and 11 gram-positive species. the incidence of more than 10% of strains with minimal inhibitory concentrations above 32 mg/l was restricted to escherichia coli, shigella spp., klebsiella pneumoniae, providencia rettgeri, morganella morganii, methicillin-resistant staphylococcus aureus and staphylococcus epidermidis. occasionally, streptococ ... | 1987 | 3325434 |
| [the antimicrobial activity of sisomicin against fresh clinical isolates]. | antimicrobial activities of sisomicin (siso) against clinical isolates obtained in the second half of 1986 were investigated together with other 4 aminoglycosides (ags) (gentamicin (gm), tobramycin (tob), dibekacin (dkb), amikacin (amk] and 2 cephems (cefotiam, cefotaxime), and were compared to the results reported in the period of late 1970's through early 1980's in japan. 1. the incidence of siso-resistant staphylococcus aureus in the present study was 18% and is comparable to that of the othe ... | 1987 | 3327965 |
| identification of porins in outer membrane of proteus, morganella, and providencia spp. and their role in outer membrane permeation of beta-lactams. | proteus mirabilis, proteus vulgaris, morganella morganii, providencia rettgeri, and providencia alcalifaciens, which were once classified into the same genus, proteus, were studied. cefoxitin-resistant mutants from these species were isolated, and it was confirmed that the resistance was attributed to the lack of an outer membrane protein, resulting in a significant decrease in the penetration of hydrophilic cephalosporins through the outer membrane. comparison of the mutant strains with their p ... | 1987 | 3034144 |
| identification of two different hemolysin determinants in uropathogenic proteus isolates. | dna sequences similar to those of the escherichia coli hemolysin genes were detected among uropathogenic isolates of proteus vulgaris and morganella morganii by using the southern blotting technique and hly gene-specific dna probe. immunoblotting revealed that among the hemolytic p. vulgaris and m. morganii isolates there was expressed a polypeptide species similar in molecular size (110 kilodaltons) and antigenicity to escherichia coli hlya. a plasmid-mediated p. vulgaris hemolysin determinant ... | 1987 | 3305367 |
| in vitro and in vivo antibacterial activities of cs-807, a new oral cephalosporin. | cs-807 is a new oral prodrug of r-3746, a cephalosporin derivative, with potent in vitro and in vivo antibacterial activity against both gram-positive and gram-negative bacteria. the susceptibility of about 1,200 clinical isolates to r-3746 was determined by the agar dilution method. ninety percent or more of pathogens such as staphylococcus aureus, streptococci, escherichia coli, klebsiella pneumoniae, klebsiella oxytoca, indole-positive and indole-negative proteus spp., providencia rettgeri, a ... | 1987 | 3310868 |
| clinical significance of beta-lactamase induction and stable derepression in gram-negative rods. | most strains of enterobacteria and pseudomonas aeruginosa produce chromosomally-determined class i beta-lactamases. when synthesized copiously these enzymes cause resistance to almost all beta-lactams, except imipenem and, sometimes, carbenicillin and tenocillin. elevated beta-lactamase production arises transiently, via induction, in pseudomonas aeruginosa and enterobacter, citrobacter, morganella, indole-positive proteus and serratia spp. when these organisms are exposed to beta-lactams. perma ... | 1987 | 3311738 |
| rapid catalase supplemental test for identification of members of the family enterobacteriaceae. | a simple, rapid, semiquantitative slide catalase test useful for differentiating members of the family enterobacteriaceae is described. judging by the time required for appearance of oxygen bubbles in 3% hydrogen peroxide, the immediate catalase reactors were yersinia, serratia, proteus, morganella, providencia, cedecea, and hafnia spp. the delayed catalase reactors were escherichia, shigella, klebsiella, enterobacter, salmonella, citrobacter, edwardsiella, kluyvera, and tatumella spp. this info ... | 1987 | 3818934 |
| the typing of morganella morgani by bacteriocin production and sensitivity. | a typing scheme for morganella morgani based on bacteriocin (morganocin) production and sensitivity is described. these characteristics were determined by testing 160 strains in all combinations and permitted their differentiation into 90 types. morganocin production was induced with mitomycin c and morganocin sensitivity determined with a diluted inoculum on lab-lemco agar at 30 degrees c. most strains (82.5%) produced morganocins and 49 different types were defined. most strains (97.5%) were s ... | 1987 | 3820269 |
| selective and differential medium for the primary isolation of members of the proteeae. | a new differential and selective medium for the isolation of members of the proteeae, pim (proteeae isolation medium) agar, was developed and evaluated. the medium relies on the ability of all members of the proteeae (with the exception of a very few morganella morganii strains) to produce a dark brown pigment in medium containing dl-tryptophan. an additional differential property, tyrosine degradation, was also demonstrated by the medium. members of the proteeae appeared as dark brown colonies ... | 1986 | 3958148 |
| epidemiology of aerobactin production in enterobacteriaceae. | clinical isolates (496) of 10 different enterobacterial genera were studied for aerobactin excretion, colicin production and antibiotic resistance. in the case of escherichia coli, the incidence of aerobactin-positive strains in 108 blood isolates (45%) was not significantly different from that corresponding to faecal sources (41%). although colicin v production was much more frequently associated with aerobactin production than other colicins, colicin v was only produced by 26% of aerobactin ex ... | 1986 | 3318871 |
| in vitro evaluation of a-56619 (difloxacin) and a-56620: new aryl-fluoroquinolones. | the in vitro antibacterial potencies of a-56619 and a-56620, two new aryl-fluoroquinolones, were compared with the potency of norfloxacin against a broad spectrum of organisms. cefotaxime, aztreonam, piperacillin, imipenem, penicillin, and gentamicin were also tested for reference purposes. the mics required to inhibit at least 90% of the strains tested ranged from 0.25 to 4 micrograms/ml for a-56619 and from 0.06 to 0.5 microgram/ml for a-56620 for members of the enterobacteriaceae. a-56619 was ... | 1986 | 3087274 |
| in vitro activity of aztreonam against gram negative bacteria from clinical specimens and its comparison with other commonly used antibiotics. | a total of 755 gram negative bacteria isolated from clinical specimens were tested against aztreonam by the disc agar diffusion test. the strains of bacteria used in this study consisted of escherichia coli (314), enterobacter aerogenes (30), e. agglomerans (7), e. cloacae, (39), citrobacter diversus (9), c. freundii (13), hafnia alvei (3), acinetobacter calcoaceticus (10), klebsiella oxytoca (6), k. ozaenae (5), k. pneumoniae (107), morganella morganii (3), moraxella sp. (10), pasteurella multo ... | 1986 | 3088346 |
| do clinical microbiology laboratories report complete bacteriology in urine from patients with long-term urinary catheters? | bacteriuria associated with long-term urinary catheters (those in place for greater than or equal to 30 days) appears to be the most common nosocomial infection in u.s. medical care facilities. this bacteriuria is polymicrobial and dynamic and accompanied by fevers, catheter obstructions, bacteremias, and deaths. we compared the reporting by our research laboratory of bacteria present in urine from long-term-catheterized nursing home patients with that by two commercial laboratories. the commerc ... | 1986 | 3093528 |
| pyridoxal phosphate-dependent histidine decarboxylase from morganella am-15. | 1986 | 3702683 | |
| in vitro activity of ci-934, a new quinolone, compared with that of other quinolones and other antimicrobial agents. | the in vitro activity of ci-934, a new 4-quinolone, was determined against gram-positive and gram-negative bacteria. the mics for 90% of the isolates tested were 0.25 microgram/ml for streptococcus pneumoniae, 0.5 microgram/ml for streptococcus faecalis, 0.25 microgram/ml for staphylococci, including methicillin-resistant strains, and less than or equal to 1.0 microgram/ml for escherichia coli, salmonella and shigella spp., klebsiella spp., proteus spp., and citrobacter spp. ci-934 had activity ... | 1986 | 3729343 |
| in vitro activity of ro 15-8074 and ro 19-5247, two orally administered cephalosporin metabolites. | the activity of two iminomethoxy aminothiazoly cephalosporins, ro 15-8074 and ro 19-5247, was compared with that of other beta-lactams against a total of 491 bacterial strains. both were highly active (mic for 90% of the strains tested [mic 90], less than or equal to 2 micrograms/ml) against the majority of the members of the family enterobacteriaceae, haemophilus influenzae, neisseria spp., and streptococcus pneumoniae, being at least 16-fold more active than cephalexin and 8-fold more active t ... | 1986 | 3729361 |
| pyridoxal 5'-phosphate-dependent histidine decarboxylase. inactivation by alpha-fluoromethylhistidine and comparative sequences at the inhibitor- and coenzyme-binding sites. | pyridoxal phosphate-dependent histidine decarboxylase from morganella morganii am-15 was inactivated by (s)-alpha-fluoromethylhistidine by a pseudo first-order reaction, with ki and k inact values of 0.1 mm and 32.2 min-1, respectively, and was most efficient at ph 6.5-7.0. both l-histidine and the competitive inhibitor, l-histidine methyl ester, protected against inactivation. the apoenzyme was not inactivated. these findings indicate that inhibition is a mechanism-based process. under optimal ... | 1986 | 3733745 |
| production and degradation of indole by gram-negative bacteria. | the indole reaction is performed in various modifications with regard both to the reagents and to the media used. especially the medium has hitherto attracted little attention and there are divergent recommendations for its composition. the comparison of some broths without and with addition of tryptophan after incubation with different indole-positive species revealed that tryptone without tryptophan yielded stronger reactions than with tryptophan added. other broths showed stronger reactions w ... | 1986 | 3754676 |
| the effect of the combination of erythromycin with new beta-lactam antibiotics against gram-negative aerobic respiratory pathogens. | the effect of erythromycin on the in vitro activity of cefotaxime, ceftizoxime, cefoperazone, moxalactam, ceftazidime, cefmenoxime, aztreonam, imipenem, piperacillin, and gentamicin against 89 bacteria isolated from sputum and tracheal aspirates of patients admitted to intensive care units was evaluated. there were 30 pseudomonas aeruginosa, 27 klebsiella pneumoniae, 9 enterobacter cloacae, 5 escherichia coli, 4 enterobacter aerogenes, 3 each of klebsiella oxytoca, pseudomonas maltophilia, serra ... | 1986 | 3802298 |
| head-space gas-liquid chromatographic analysis for presumptive identification of bacteria in blood cultures. | a total of 445 strains of common aerobic and anaerobic bacteria were analyzed for their volatile microbial metabolites by head-space gas-liquid chromatography. the bacteria were incubated for 24 or 48 h in blood-containing trypticase soy or lombard-dowell glucose broth before being analyzed by automatic head-space injection. from the chromatographic pattern obtained, the majority of klebsiella pneumoniae, enterobacter cloacae, serratia marcescens, escherichia coli, pseudomonas aeruginosa, morgan ... | 1986 | 3816354 |
| susceptibility of ticarcillin-resistant gram-negative bacilli to different combinations of ticarcillin and clavulanic acid. | the susceptibility of ticarcillin-resistant and of ticarcillin-susceptible gram-negative bacilli to different combinations of ticarcillin and clavulanic acid has been investigated. susceptibility to ticarcillin has been restored in ticarcillin-resistant isolates in proportion to the amount of clavulanic acid in the combination and depending upon the species. the decrease in the mics of ticarcillin was excellent to good in proteus, morganella, providencia, escherichia coli and klebsiella, moderat ... | 1986 | 3636338 |
| inducible type i beta-lactamases of gram-negative bacteria and resistance to beta-lactam antibiotics. | mutants, showing either constitutive (depressed) or non-inducible expression of chromosomally-mediated type i beta-lactamase were obtained from clinical isolates of enterobacter cloacae, ent. aerogenes, citrobacter freundii, providencia stuartii, morganella morganii, serratia marcescens and pseudomonas aeruginosa. the wild-type and mutant strains were compared for susceptibility to a range of beta-lactam antibiotics. derepression of beta-lactamase synthesis generally, but not always, resulted in ... | 1986 | 3485092 |
| antimicrobial activity and beta-lactamase stability of sk&f 88070 compared with other agents. | the in vitro activity and beta-lactamase stability of sk&f 88070 (7-[[2-amino-4-thiazolyl)(methoxyimino)acetyl]amino]-3-[[ [1-(2-sulfaminoethyl)-1h-tetrazol-5-yl]thio]methyl]-3- cephem-4-carboxylic acid) a new parenteral cephalosporin was investigated against 780 types of bacteria. sk&f 88070 inhibited 90% of escherichia coli, klebsiella pneumoniae, proteus mirabilis, salmonella species, shigella species, morganella morganii, and citrobacter diversus at less than or equal to 0.5 micrograms/ml. i ... | 1986 | 3485506 |
| the activity of bmy 28142 a new broad spectrum beta-lactamase stable cephalosporin. | the in-vitro activity of bmy 28142, an iminomethoxy, aminothiazolyl cephalosporin containing a methyl pyrrolidinio c-3 was compared with that of cefotaxime, ceftazidime, aztreonam, imipenem and tobramycin against various bacteria. bmy 28142 was the most active agent tested against the enterobacteriaceae inhibiting 90% at less than or equal to 1 mg/l. the in-vitro activity of bmy 28142 was equal to or superior to cefotaxime against the highly susceptible members of the enterobacteriaceae and seve ... | 1986 | 3486862 |
| gram-negative septicemia in american alligators (alligator mississippiensis). | six species of bacteria (family enterobacteriaceae) not commonly reported as associated with disease in american alligators (alligator mississippiensis) were documented, suggesting that aeromonas is not the only bacterium responsible for septicemia in crocodilians. these included citrobacter freundii, enterobacter agglomerans, proteus sp., morganella morganii, serratia marcescens, and klebsiella oxytoca. clinical signs of disease included intensive basking, anorexia, lethargy, flaccid limb paral ... | 1986 | 3503133 |
| rare occurrence of proteus vulgaris in faeces: a reason for its rare association with urinary tract infections. | the faecal carriage rates of different species of proteeae were assessed in studies with 220 faecal isolates from 219 individuals of whom approximately one-third were well and the remainder had gastro-enteritis. as a result of the development of new media that allowed replacement of the phenylalanine deaminase test with the tryptophan deaminase test and made it possible to combine tests for indole and urease production and for hydrogen sulphide and ornithine decarboxylase formation in two single ... | 1986 | 3512839 |
| occurrence and pathogenic role of morganella-proteus-providencia group bacteria in human feces. | a total of 2,693 fecal specimens, with 1,422 from healthy persons and 1,271 from patients suffering from enteric diseases, was investigated to isolate species of the morganella-proteus-providencia group and to evaluate the role of these bacteria in intestinal disorders. most strains were isolated from two media, i.e., blood agar and tryptophan agar. two of the species were more frequently found in diarrheal cases than in healthy controls. these species were morganella morganii and proteus mirabi ... | 1986 | 3517057 |
| effect of inoculum size on ampicillin and amoxycillin susceptibility determined by gas-liquid chromatography for members of the family enterobacteriaceae. | inoculum size had only a small effect on the results for ampicillin and amoxycillin susceptibility testing of escherichia coli. in contrast, a difference in inoculum size from 10(6) to 10(8) cfu/ml profoundly affected the results for ampicillin and amoxycillin susceptibility testing of proteus mirabilis, causing a change from susceptibility to complete resistance. these different effects of inoculum size were observed both when susceptibility was determined by the suppression of a characteristic ... | 1986 | 3517063 |
| ferric ammonium citrate decomposition--a taxonomic tool for gram-negative bacteria. | the iron uptake test of szabó and vandra has been modified and used for the differentiation of gram-negative bacteria. nutrient agar containing 20 g per litre of ferric ammonium citrate was distributed into narrow tubes and solidified so as to form butts and slants. considering the localization of the rusty-brown coloration produced after seeding and incubation, 2367 strains were classified into four groups. (1) unchanged medium: escherichia coli, shigella spp., yersinia spp., hafnia alvei and m ... | 1986 | 3529797 |
| [inhibition of cephalosporinase of enterobacteria by ceftriaxone]. | resistance of ceftriaxone, cefotaxime and cefmenoxime to inactivation by the chromosomal constitutive cephalosporinases of enterobacter cloacae p99, morganella morganii gn 1510 and serratia liquefaciens 132 was determined using high performance liquid chromatography. the inhibitory properties of ceftriaxone against the same cephalosporinases were studied by determining the residual amount of cephalothin used as the substrate. with a 1:50 cephalosporinase-cephalosporin ratio, ceftriaxone was less ... | 1986 | 3534712 |
| [bactericidal activity of ceftriaxone, amikacin and their combination]. | third-generation cephalosporins such as ceftriaxone are often used alone; however, with enterobacter (ent), citrobacter (cit), serratia (ser) and morganella (mor), a combination of two drugs is advisable. aminoglycoside-beta-lactam combinations are often synergistic. however, results are not consistent with the new cephalosporins. we determined the killing kinetics of ceftriaxone (c) alone, amikacin (a) alone and both drugs in combination (ac). the antibiotics were tested in the following concen ... | 1986 | 3534741 |
| speciation, serotyping, antimicrobial sensitivity and plasmid content of proteeae from the environment of calf-rearing units in south west england. | a survey was undertaken of the occurrence, serotype, antimicrobial sensitivity and plasmid content of members of the tribe proteeae in the environment of two calf-rearing units in the county of avon in south west england. examples of the following species were found: proteus mirabilis, prot. vulgaris, prot. vulgaris biogroup 2, morganella morganii, providencia stuartii, prov. alcalifaciens and prov. rettgeri. a wide range of serotypes was found, many having been previously reported from nosocomi ... | 1986 | 3540110 |
| antimicrobial activity of imipenem against 1386 clinical isolates. | 1386 isolates from clinical specimens were tested against imipenem by disc agar diffusion. the bacteria used in this study consisted of escherichia coli, enterobacter aerogenes, e. agglomerans, e. cloacae, klebsiella pneumoniae, k. oxytoca, k. ozanae, proteus mirabilis, p. vulgaris, providencia stuartii, p. rettgeri, acinetobacter calcoaceticus, citrobacter diversus, c. freundii, morganella morganii, serratia liquefaciens, s. marcescens, hafnia alvei, aeromonas hydrophila, pseudomonas aeruginosa ... | 1986 | 3468319 |
| pyridoxal 5'-phosphate-dependent histidine decarboxylase. nucleotide sequence of the hdc gene and the corresponding amino acid sequence. | the nucleotide sequence of a 1.3-kilobase naei fragment from morganella morganii am-15 that contains the gene for histidine decarboxylase has been determined. the gene was initially identified among total chromosomal digests using a mixed sequence oligonucleotide probe corresponding to amino acids 11-16 of histidine decarboxylase and then cloned on a 5.5-kilobase psti fragment. the structural gene contains 1131 nucleotides and encodes 377 amino acids with the sequence: (sequence: in text). the i ... | 1986 | 3015950 |
| induction/inhibition of chromosomal beta-lactamases by beta-lactamase inhibitors. | many species of gram-negative bacteria produce chromosomal beta-lactamases that can be induced to high-level expression by exposure to beta-lactam antibiotics. fifty-four strains of escherichia coli, enterobacter, proteus, citrobacter, and morganella were examined for beta-lactamase inducibility by clavulanic acid, sulbactam, ytr 830, ampicillin, and cefoxitin. cefoxitin proved to be the most potent inducer, affecting most of the strains of enterobacter and morganella. clavulanic acid induced 30 ... | 1986 | 3026004 |
| [antigenic characteristics of standard strains of providencia rettgeri (o- and h-antigens)]. | additions and changes have been introduced into the existing antigenic diagnostic scheme of p. rettgeri on the basis of the study of the antigenic structure of standard strains from foreign collections: new, formerly unknown varieties of somatic and flagellar antigens (o35, o36, h27, h28) have been discovered, the complex of antigenic factors for h-antigens 7, 10, 23, 27 has been discovered. strains 958 (36 : 28) and 979 (16 : 27a, 23b, 2a), previously classified with the genus morganella, have ... | 1985 | 2416153 |
| in vitro antibacterial activity of norfloxacin and other agents against ocular pathogens. | 302 clinical isolates representing 16 bacterial species most often implicated in ocular infections were tested in vitro against norfloxacin and a panel of antibacterial agents. on the basis of the 90% minimal inhibitory concentration (mic90) data, norfloxacin was 4-32 times more active than the next best antimicrobial tested against citrobacter freundii, escherichia coli, morganella morganii, proteus mirabilis, proteus vulgaris, haemophilus influenzae, neisseria gonorrhoeae and staphylococcus ep ... | 1985 | 3157551 |
| assessment of head-space gas-liquid chromatography for the rapid detection of growth in blood cultures. | blood for transfusion was inoculated with between 10(0) and 10(2) colony-forming units (cfu) per ml of each of 59 microbial isolates and added to cooked meat broth. at intervals up to 72 h incubation, the cultures were examined by conventional visual inspection and automated head-space gas-liquid chromatography (hs-glc). forty-six isolates including all those examined of staphylococcus aureus, streptococcus pyogenes, s. pneumoniae, s. faecalis, s. milleri, s. mitior, s. mitis, s. salivarius, s. ... | 1985 | 3988854 |
| purification and properties of a pyridoxal 5'-phosphate-dependent histidine decarboxylase from morganella morganii am-15. | a pyridoxal 5'-phosphate-dependent histidine decarboxylase from morganella morganii am-15 was purified to homogeneity. the enzyme is a tetramer (mr 170,000) of identical subunits and binds 4 pyridoxal-p/tetramer; it is resolved by dialysis against cysteine at ph 6.8. between ph 6.2 and 8.8, the holoenzyme shows ph-independent absorbance maxima at 333 and 416 nm. vmax/km is highest at ph 6.5; this optimum reflects chiefly increased km values for histidine at lower or higher ph values, whereas vma ... | 1985 | 3997848 |
| antibacterial activity of amifloxacin (win 49, 375), a new quinolone agent. | the in vitro activity of amifloxacin, a quinolone antimicrobial agent was compared with those of ciprofloxacin, enoxacin, ofloxacin and norfloxacin against gram-positive and gram-negative bacteria. ninety percent of escherichia coli, klebsiella species, aeromonas, salmonella, shigella, citrobacter, enterobacter species, proteus mirabilis, serratia marcescens, and morganella morganii were inhibited by less than or equal to 0.5 microgram/ml. amifloxacin inhibited branhamella, haemophilus, and neis ... | 1985 | 4064609 |
| population analysis of susceptibility to cefotaxime in enterobacteriaceae. | population analysis of susceptibility to cefotaxime (ctx) in eight species of enterobacteriaceae was carried out. one strain of each species was examined. the strains represented their individual species as regards natural susceptibility to ampicillin (a) and carbenicillin (ca). cephalothinase activity of the parental strains and strains selected on the plates with the highest concentration that allowed growth was determined by an ultraviolet assay. the populations of the a-susceptible/ca-suscep ... | 1985 | 4083013 |
| production of brownish pigment by bacteria of the morganella-proteus-providencia group. | all bacteria of the morganella-proteus-providencia group tested produced a brownish pigment on agar containing l-forms of aromatic amino acids, i.e. histidine, phenylalanine, tryptophan, and tyrosine in the presence of iron ions under aerobic conditions. no pigment was observed without iron or when using d-forms of the amino acids. it is a melanin-like pigment with variable molecular weight under about 12000 d and an absorbance maximum between 330 and 410 nm depending on the concentration and th ... | 1985 | 3834717 |
| in vitro studies of bmy-28142, a new broad-spectrum cephalosporin. | bmy-28142 was compared with other broad-spectrum antibiotics against gram-positive cocci and gram-negative bacilli. bmy-28142 was highly active against all gram-negative bacilli and especially against enterobacter cloacae, serratia marcescens, and morganella morganii. its in vitro activity suggests that bmy-28142 should prove to be useful for the treatment of gram-negative bacillary infections. | 1985 | 3838637 |
| temocillin sensitivity of enterobacteriaceae species resistant to cefotaxime. | the in vitro activity of temocillin, cefotaxime, aztreonam and ceftazidime was tested against selected cefotaxime-resistant isolates (43 enterobacter species, 37 serratia marcescens, 16 morganella morganii, 8 klebsiella species) and cefotaxime-susceptible strains of the same species. cross-resistance with a high degree of correlation was observed between cefotaxime and aztreonam or ceftazidime, but not between cefotaxime and temocillin. | 1985 | 3849423 |
| timentin in the treatment of symptomatic complicated urinary tract infections in adult patients. | the safety and effectiveness of timentin were evaluated in 34 adult patients with symptomatic complicated urinary tract infections, principally due to multiply-drug-resistant bacteria. although a wide variety of organisms, particularly gram-negative bacilli, were found, escherichia coli was the most frequent, accounting for 14 of 45 (31 percent) pathogens isolated. ten (22 percent) isolates were pseudomonas aeruginosa; 11 (24 percent) were proteus or morganella species; three (7 percent) were ci ... | 1985 | 3852637 |
| in-vitro activity of ofloxacin, a quinolone carboxylic acid compared to other quinolones and other antimicrobial agents. | ofloxacin is a new quinolone carboxylic acid compound. its activity against 900 bacterial isolates was determined. it inhibited 90% of escherichia coli, klebsiella sp., aeromonas hydrophila, salmonella spp., shigella spp., citrobacter spp., enterobacter spp., morganella morganii, proteus mirabilis, yersinia enterocolitica at less than or equal to 0.8 mg/l. branhamella catarrhalis, haemophilus sp., neisseria sp. were inhibited by less than or equal to 0.1 mg/l. pseudomonas aeruginosa and other ps ... | 1985 | 3865923 |
| [therapeutic efficacies of suppository of ceftizoxime against experimental infections in mice]. | in experimental infections in mice, the therapeutic efficacies of rectal administration of ceftizoxime (czx) were compared with those of subcutaneous administration. the efficacies of rectal administration were equivalent to those of subcutaneous administration against intraperitoneal infections due to streptococcus pneumoniae and escherichia coli. against staphylococcus aureus, streptococcus pyogenes, klebsiella pneumoniae, enterobacter cloacae, proteus mirabilis, morganella morganii and serrat ... | 1985 | 3869265 |
| gram-negative bacilli resistant to third-generation cephalosporins: beta-lactamase characterization and susceptibility to sch 34343. | we studied 192 recent clinical isolates, comprising six species of gram-negative bacilli resistant either to cefotaxime or latamoxef (moxalactam), from several hospitals. all isolates were resistant to several other third-generation cephalosporins or a monobactam. two to five types of chromosomal beta-lactamases, as defined by isoelectric focusing, were readily identified in each species. isolates of citrobacter, enterobacter and serratia produced higher levels of chromosomal beta-lactamase than ... | 1985 | 3875602 |
| in-vitro activity and beta-lactamase stability and inhibitory properties of a new penem antibiotic, sch 34343. | sch 34343 is a new penem antibiotic. its in-vitro activity was determined against gram-positive and -negative aerobic and anaerobic isolates. sch 34343 inhibited 90% of strains of escherichia coli, klebsiella pneumoniae, proteus mirabilis, salmonella spp, citrobacter spp. and shigella spp. at less than 1 mg/1. ninety per cent of strains of enterobacter, morganella and providencia spp. were inhibited by less than 4 mg/1. sch 34343 did not inhibit pseudomonas spp., and it had slightly less activit ... | 1985 | 3875603 |
| evaluation of the in-vitro antibacterial activity of sch 34343. | the in-vitro activity (as measured by geometric mean mics, mg/l) of sch 34343 against aerobic and anaerobic bacteria was compared with that of 14 other selected beta-lactam antibiotics including aztreonam, latamoxef (moxalactam), ceftazidime and imipenem. sch 34343 had good activity (less than 2 mg/l) against most gram-negative aerobic bacteria whether or not they contained high levels of plasmid-mediated or chromosomally-mediated beta-lactamases. it was slightly less potent against strains of m ... | 1985 | 3875604 |
| in-vitro activity of the combinations of ampicillin with mecillinam or with beta-lactamase inhibitors against strains resistant to ampicillin. | the in-vitro activity of ampicillin, of mecillinam and of combinations of ampicillin with mecillinam, clavulanic acid or 6 beta-bromopenicillanic acid has been studied against 126 enterobacteriaceae resistant to ampicillin. the combination of ampicillin with mecillinam showed synergy or addition in 60% of the combinations tested. synergy was seen especially when the strains were resistant to mecillinam, indifference when they were susceptible to mecillinam. the combination of ampicillin with mec ... | 1985 | 3879248 |
| the activity of cefbuperazone, a 7 alpha-methoxy 7 beta acyl ureido cephalosporin. | the activity of cefbuperazone, a 7 alpha-methoxy ureido cephalosporin, was determined against 726 clinical isolates. ninety percent of escherichia coli, klebsiella pneumoniae, klebsiella oxytoca, citrobacter diversus, proteus mirabilis, enterobacter aerogenes, proteus vulgaris, morganella morganii, salmonella, and shigella species were inhibited by less than or equal to 6.3 micrograms/ml. cefbuperazone was more active than cefamandole, cefoxitin and piperacillin against these species. concentrat ... | 1985 | 3879464 |
| aztreonam in the treatment of serious orthopedic infections. | aztreozam was evaluated in the treatment of a variety of orthopedic infections. included were 17 patients with osteomyelitis, three with purulent arthropathy with prostheses, and 16 with superficial infections secondary to trauma or surgical procedure. pathogens were gram-negative bacilli sensitive to aztreonam. concomitant antibiotics were administered for gram-positive cocci that were present initially or by superinfection. infecting organisms included pseudomonas aeruginosa (minimal inhibitor ... | 1985 | 3881949 |
| inducible xylitol dehydrogenases in enteric bacteria. | morganella morganii atcc 25829, providencia stuartii atcc 25827, serratia marcescens atcc 13880, and erwinia sp. strain 4d2p were found to induce a xylitol dehydrogenase when grown on a xylitol-containing medium. the xylitol dehydrogenases were partially purified from the four strains, and those from m. morganii atcc 25829, p. stuartii atcc 25827, and s. marcescens atcc 13880 were all found to oxidize xylitol to d-xylulose. these three enzymes had kms for xylitol of 7.1 to 16.4 mm and molecular ... | 1985 | 3886639 |
| hemorrhagic bullae associated with morganella morganii septicemia. | to our knowledge this is the first case of hemorrhagic bullae caused by morganella morganii septicemia. the presence of organisms in the bullae, demonstrated by gram strain and culture, and the acral location of the bullae suggest that the skin lesions were due directly to blood-borne infection. multiple factors predisposed this patient to gram-negative bacteremia, including lymphoma, chemotherapy, neutropenia, systemic steroids, multiple hospitalizations, and treatment with broad-spectrum antib ... | 1985 | 3886721 |
| inhibitory activity of cefpiramide on beta-lactamase. | the beta-lactamase stability and inhibitory activity of cefpiramide were investigated. cefpiramide was found to be stable to hydrolysis and inhibited beta-lactamase produced by citrobacter freundii, enterobacter cloacae, morganella morganii, and escherichia coli. kinetic studies showed that cefpiramide is a competitive inhibitor of cephaloridine hydrolysis by e. cloacae beta-lactamase. | 1985 | 3888544 |
| in vitro studies on the antibacterial activities of ym-13115, a new broad-spectrum cephalosporin. | the in vitro antibacterial activities of ym-13115, a new parenteral cephalosporin, were compared with those of ceftazidime, cefoperazone, and cefsulodin. the compound was highly active against the common members of the enterobacteriaceae and 2 to 256 times more active than cefoperazone. ym-13115 was as active as ceftazidime against citrobacter freundii, proteus vulgaris, and morganella morganii and two to four times more active than ceftazidime against escherichia coli, klebsiella pneumoniae, en ... | 1985 | 3890729 |
| sch 34343 activity against streptococci and beta-lactam-resistant enterobacteriaceae. | the in-vitro activity of sch 34343 was compared with that of cefotaxime, ceftazidime, latamoxef (moxalactam), aztreonam and ampicillin. against pneumococci, sch 34343 was as active as ampicillin, whereas against the other streptococci it was less active than ampicillin but significantly better than the other antibiotics against enterococci. with clinical isolates of enterobacteriaceae resistant to cefotaxime, sch 34343 had mics generally less than 2 mg/l. after introduction of plasmid-mediated b ... | 1985 | 3897168 |
| imipenem/cilastatin in the treatment of intraabdominal infections: a review of worldwide experience. | imipenem is a new broad-spectrum beta-lactam antibiotic, which when administered with cilastatin may be a suitable alternative to the combination of an aminoglycoside and either clindamycin or a nitroimidazole as therapy for intraabdominal infections. the clinical and microbiologic results for 164 assessable patients given imipenem/cilastatin for intraabdominal infections are reported. only three of 416 bacterial strains isolated prior to therapy from intraabdominal infection sites were resistan ... | 1985 | 3901215 |
| evolution of the lipoprotein gene in the enterobacteriaceae. cloning and dna sequence of the lpp gene from proteus mirabilis. | we cloned the lipoprotein gene from proteus mirabilis and determined its dna sequence. comparison with the lpp genes from escherichia coli, serratia marcescens, erwinia amylovora and morganella morganii revealed several unique features of the evolution of the lpp gene in the enterobacteriaceae and enabled us to establish phylogenetic relationships between these bacteria. | 1985 | 3903165 |
| ceftriaxone: a beta-lactamase-stable, broad-spectrum cephalosporin with an extended half-life. | ceftriaxone is an aminothiazolyl-oxyimino cephalosporin. it possesses the typical in vitro activity of a third-generation cephalosporin with excellent activity against many gram-negative aerobic bacilli: escherichia coli; species of proteus, klebsiella, morganella, providencia and citrobacter; and enterobacter agglomerans. ceftriaxone also has outstanding bactericidal action against pneumococci, group b streptococci, meningococci, gonococci and hemophilus influenzae. in healthy volunteers, it ha ... | 1985 | 3906584 |
| aztreonam therapy for complicated urinary tract infections caused by multidrug-resistant bacteria. | aztreonam was administered to 145 consecutive patients with complicated urinary tract infections caused by multidrug-resistant, aztreonam-sensitive bacteria. multidrug resistance was defined by disk diffusion testing as resistance to aminopenicillins and to first- and second-generation cephalosporins, with or without resistance to aminoglycosides. the first 40 assessable patients received 1 g of aztreonam intravenously three times daily for a median period of eight days; the remaining 95 assessa ... | 1985 | 3909335 |
| the in vitro activity and beta-lactamase stability of cefpirome (hr 810), a pyridine cephalosporin agent active against staphylococci, enterobacteriaceae and pseudomonas aeruginosa. | the in vitro activity of cefpirome, a new cyclopyridinium cephalosporin, was evaluated against 947 aerobic and anaerobic bacteria. cefpirome inhibited 90% of escherichia coli, klebsiella spp., citrobacter diversus, morganella morganii, proteus vulgaris, proteus mirabilis, aeromonas spp., salmonella spp., shigella spp. and haemophilus and neisseria species at less than or equal to 0.4 mg/l. it had activity comparable to that of cefotaxime, ceftizoxime, ceftazidime, aztreonam, and moxalactam again ... | 1985 | 3928497 |
| antibiotic-resistant flora in nursing home patients admitted to the hospital. | to study carriage of multiply resistant gram-negative bacilli, 50 patients admitted to the hospital from nursing homes (nhs) and 50 control admissions not from nhs were matched for age and recent antibiotic use. their antibiotic resistance patterns were similar: 20 nh patients and 14 controls had resistant strains. however, significantly more patients (64%) from nhs with large numbers of "skilled beds" had resistant bacteria than did patients from small nhs (21%) or controls (28%). also, more pa ... | 1985 | 3929707 |
| the in vitro antimicrobial activity of desacetylcefotaxime compared to other related beta-lactams. | like all other cephalosporins that contain an acetyl side chain in the 3' position, cefotaxime (ctx) is partially desacetylated in vivo. desacetylcefotaxime (des-ctx) possesses a broad antimicrobial spectrum and high beta-lactamase stability. with the exception of pseudomonas aeruginosa, morganella morganii, bacteroides fragilis, and staphylococcus aureus, most strains of other species tested usually had mean mics of des-ctx lower than 1 microgram/ml. its activity is generally lower than that of ... | 1984 | 6086214 |
| efficacy of ceftizoxime administered twice daily in hospitalized patients with respiratory tract infections. | the efficacy and safety of ceftizoxime administered twice daily were evaluated in 215 hospitalized patients with documented lower respiratory tract infections. the majority of patients received 1 to 2 gm of ceftizoxime intramuscularly or intravenously every 12 hours; the mean dosage was 2 gm/day, and the mean duration of therapy was 8.9 days. clinical cure was achieved in 204 (95%) of the 215 patients with lower respiratory tract infection. one hundred and thirty-eight patients were both clinica ... | 1984 | 6097357 |
| in vitro activity of pefloxacin compared to that of quinolones and other antimicrobial agents. | pefloxacin is a new methyl-4-piperazinyl quinolone. it had mic90 values of less than 0.01 to 0.8 micrograms/ml for the majority of escherichia coli, klebsiella, oxytoca, citrobacter, providencia, enterobacter cloacae, enterobacter aerogenes, morganella and proteus mirabilis. it inhibited ampicillin, cephalexin and nalidixic acid resistant isolates of these species. against pseudomonas the pefloxacin mic90 was 3.1 micrograms/ml. staphylococcus aureus had a mic50 of 0.4 micrograms/ml and a mic90 o ... | 1984 | 6241847 |
| [hplc study of the inhibition of enterobacterial cephalosporinases by cefmenoxime]. | high performance liquid chromatography (hplc) has shown that cefmenoxime and cefotaxime are stable to the cephalosporinase of enterobacter cloacae p99 , morganella morganii gn 1510 and serratia liquefaciens 132. they are significantly resistant to hydrolysis by 100 cephalosporinase units (cephalosporinase production of 10(12) bacterial). cefmenoxime and cefotaxime are also inhibitors of cephalosporinase at the concentration of 5.10-10 micrograms per 10-10 unit of enzyme. | 1984 | 6330649 |
| susceptibility of gram-negative bacteria to polymyxin b nonapeptide. | subinhibitory concentrations of polymyxin b nonapeptide sensitized all 21 polymyxin-susceptible gram-negative bacterial strains studied to hydrophobic antibiotics such as fusidic acid, novobiocin, and erythromycin. the susceptibility increases were usually 30- to 300-fold. the strains included representatives of escherichia coli with different o- and k-antigens, klebsiella pneumoniae, klebsiella oxytoca, enterobacter cloacae, enterobacter agglomerans, salmonella typhimurium, acinetobacter calcoa ... | 1984 | 6331296 |
| evaluation of a two-hour method for screening pathogens from stool specimens. | the 2-h stool-screening test (sst) (api system s.a., montalieu-vercieu, france) was used to screen 231 organisms yielding suspicious colonies on stool differential agars for potential pathogens. all 54 salmonellae yielded correct screens. of 14 shigellas, 9 keyed as possible shigella spp.-yersinia enterocolitica-rare salmonella spp. (sys), and 5 (all shigella sonnei) keyed as possible s. sonnei-y. enterocolitica-arizona spp. (sya). three arizona strains were identified as probable salmonella spp ... | 1984 | 6386849 |
| simple spot test for rapid detection of urease activity. | a spot test for the detection of urease activity was developed and evaluated with 761 strains of gram-negative bacteria. the test was compared with the conventional christensen urea agar slants and urease test on the vitek enterobacteriaceae card (vitek systems, inc., st. ana, mo.). of the 348 strains of the proteus-providencia-morganella group that were urease positive, 327 (94%) yielded positive results within 1 min, and all strains yielded positive results within 2 min. all these organisms al ... | 1984 | 6394623 |
| rapid test for determination of urea hydrolysis. | a urease test for the rapid determination of urea hydrolysis is described in which diluted urea agar concentrate was used in small amounts with dense inoculum of the test organisms. the method was evaluated and compared with christensen's urea agar slants by using 728 clinical isolates of gram-negative bacteria. of the 325 strains of urease-positive proteus-providencia-morganella, 282 (87%) gave positive results within 5 min with the rapid test. urease activity of 97% of these organisms became e ... | 1984 | 6395804 |
| third-generation cephalosporins: a critical evaluation. | six third-generation cephalosporins--cefotaxime, moxalactam, cefoperazone, ceftizoxime, ceftriaxone, and cefmenoxime--are reviewed; covered are chemistry and structure-activity relationships, mechanism of action, spectra of activity, pharmacokinetics, clinical utility, adverse effects, and cost effectiveness. the third-generation cephalosporins have a similar mechanism of action to that of other beta-lactam antibiotics. none of the agents is particularly active against certain gram-positive bact ... | 1984 | 6432420 |
| comparative evaluation of the eiken and api 20e systems and conventional methods for identification of members of the family enterobacteriaceae. | to evaluate the accuracy and utility of the eiken systek no. 1 (eiken system; eiken chemical co., ltd., tokyo, japan), we conducted a clinical comparison, with 345 enterobacteriaceae isolates, of the eiken system with api 20e (analytab products, inc., plainview, n.y.) and conventional methods. the eiken system is a 21-biochemical-test battery tray stored at 25 degrees c and inoculated in one step. it is similar to the api 20e except that the eiken system contains malonate, adonitol, and maltose; ... | 1984 | 6490860 |
| comparative in-vitro activity of quinolone carboxylic acids against proteeae. | the in-vitro susceptibilities of 198 isolates of precisely identified proteeae species to six quinolone antimicrobials were determined. significant differences in susceptibility patterns among various proteeae to the quinolones examined were demonstrated. although providencia stuartii was found to be the most resistant to quinolones including the very active agent ciprofloxacin, fully speciated prov. rettgeri were also markedly resistant as well. in contrast prov. alcalifaciens was extremely sen ... | 1984 | 6511707 |