Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| a new plate medium for rapid presumptive identification and differentiation of enterobacteriaceae. | a new selective differential agar medium for rapid presumptive identification of enterobacteriaceae from water and food samples is described (emx id agar). by a combination of fluorogenic and chromogenic substrates, the medium detects the presence of beta-d-glucuronidase, beta-d-galactosidase, beta-d-xylosidase, tryptophane deaminase and h2s; additionally, cytochrome-oxidase and indole production can be demonstrated. this medium provides an inexpensive means for simple and rapid presumptive iden ... | 1991 | 1777382 |
| rapid isolation and presumptive diagnosis of uropathogens by using membrane filtration and differential media. | random urine samples from hospitalized patients (n = 550) and seeded sterile filtered urine samples (n = 730) were used to test a membrane filtration technique, qualture (future medical technologies international, inc., west palm beach, fla.), for the detection and identification of uropathogens. results for each sample were compared with those obtained by the calibrated loop (0.01 ml) method to demonstrate the sensitivity of the method as a screening tool and the specificity of the presumptive ... | 1991 | 1774240 |
| typing of proteus mirabilis from clinical sources by computerized analysis of electrophoretic protein patterns. | seventy-five strains of proteus mirabilis (mainly of human origin) were characterized by one-dimensional sds-page of cellular proteins. the strains came from various countries; 24 were from urine, 17 from faeces (including one from a dog and one from a monkey), 12 from the respiratory tract (including nine from sputum), four from a cerebral abscess, 12 from miscellaneous sources and six from unknown sources. the protein patterns, which contained 45 to 50 discrete bands, were highly reproducible. ... | 1991 | 1761440 |
| use of a broad-host-range gyra plasmid for genetic characterization of fluoroquinolone-resistant gram-negative bacteria. | the gyra genotypes of ciprofloxacin-resistant clinical isolates of escherichia coli (n = 3), klebsiella pneumoniae (n = 4), providencia stuartii (n = 2), pseudomonas aeruginosa (n = 1), and acinetobacter calcoaceticus (n = 1) were analyzed in a dominance test. this test is based on the dominance of a wild-type gyra gene (gyra+) over the quinolone resistance allele (gyra) in a heterodiploid strain. plasmid pbp515, developed to carry the gyra+ gene of e. coli k-12 on a broad-host-range vector deri ... | 1991 | 1759823 |
| in vitro activity of ro 09-1428 compared to other cephalosporins. | the in vitro activity of ro 09-1428, a new catechol-type parenteral cephalosporin, was compared to that of ceftazidime, e-1040, cefpirome and cefepime against gram-positive and gram-negative organisms. ro 09-1428 inhibited group a streptococci at less than or equal to 0.12 micrograms/ml, and group b, c and g streptococci and streptococcus pneumoniae at 0.5 micrograms/ml, whereas for staphylococcus aureus ro 09-1428 had mics of 8-16 micrograms/ml similar to ceftazidime and e-1040. against pseudom ... | 1991 | 1748124 |
| the current and future impact of antimicrobial resistance among nosocomial bacterial pathogens. | the selection of drug-resistant microorganisms has generally been associated with the widespread use of antimicrobial agents. the emergence of these antimicrobial resistance has an undesirable impact that often severely limits the use of these drugs that could have otherwise been identified as "drugs of first choice." among the most serious drug-resistance problems, the chromosomally mediated type -i beta-lactamase mechanism has become more common among the infecting gram-negative bacteria. type ... | 1992 | 1737440 |
| evolution of the ferric enterobactin receptor in gram-negative bacteria. | using sodium dodecyl sulfate-polyacrylamide gel electrophoresis of iron-deficient and replete cell envelopes, 59fe-siderophore uptake studies, and western immunoblots and cytofluorimetric analyses with monoclonal antibodies (mabs), we surveyed a panel of gram-negative bacteria to identify outer membrane proteins that are structurally related to the escherichia coli k-12 ferric enterobactin receptor, fepa. antibodies within the panel identified fepa epitopes that are conserved among the majority ... | 1991 | 1717434 |
| antibacterial properties of the bicyclic pyrazolidinones. | ly173013 and ly186826 are bicyclic pyrazolidinones containing a novel aza-gamma-lactam ring structure. the antibacterial properties of these compounds appear to be related to those of beta-lactam antibiotics in that both classes of compounds share certain common binding molecules such as beta-lactamases and penicillin-binding proteins. | 1990 | 1689710 |
| prevalence of nosocomial infections in a saudi arabian teaching hospital. | the rate of nosocomial infections was determined during a 9-month study in a 6-year-old hospital in north saudi arabia. the overall rate of nosocomial infection in the hospital was 2.2%. the rates in the different services varied. the highest were in the special care baby unit (13.5%) and intensive care unit (6%). in the other services it ranged from 1 to 3.5%. the common causal agents of documented infections were escherichia coli (81), pseudomonas aeruginosa (55), staphylococcus aureus (43), k ... | 1991 | 1675653 |
| [urinary tract infection in an ambulatory population: epidemiological analysis of the etiology and antibiotic resistance of isolated gram-negative strains]. | 15,892 urinocultures belonging to out-patients admitted to chieti ulss 04, from january '85 to december '89 were studied. among the examined samples, the positive urinocultures were 4255 (26.8%) with a prevalence in the female sex (78.6%). during the year e. coli was the most frequently identified organism (55.8%) without significant changes. 25.7% was the isolation percentage of morganella-proteus-providencia (mpp). in order to plan a right antibiotic-therapy the resistance of isolates to 19 ch ... | 1991 | 1670056 |
| studies of bacterial, rotaviral and cryptosporidium etiology of acute diarrheal diseases in hospitalized children. | 657 hospitalized children with acute diarrheal disease were studied for bacterial and rotaviral etiology. cryptosporidium presence was followed in 123 children. intestinal pathogens were detected in 195 (29.6%) cases: 132 (20.3%) enterobacteria, 47 (7.1%) rotaviruses, 4 (3.2%) cryptosporidium sp. and 12 (1.8%) combined infections. among enterobacteria, e. coli was the most frequent (10% cases) with enteropathogenic (epec), enterotoxigenic (etec), enterohemorrhagic (ehec) and enteroinvasive (eiec ... | 1991 | 1666314 |
| in vitro activity and stability against novel beta-lactamases of investigational beta-lactams (cefepime, cefpirome, flomoxef, sce2787 and piperacillin plus tazobactam) in comparison with established compounds (cefotaxime, latamoxef and piperacillin). | the therapeutic perspectives of flomoxef, sce 2787, cefpirome, cefepime, latamoxef, cefotaxime and of piperacillin plus tazobactam were comparatively evaluated by their in vitro activity against 1119 clinical isolates of 83 bacterial species. escherichia coli, klebsiella spp. enterobacter sakazakii, proteus spp. and shigella spp. were about equally susceptible to the cephalosporins (mic90: 0.06 to 0.5 mg/l), while the mic90 for piperacillin plus tazobactam was between 2 and 16 mg/l. enterobacter ... | 1991 | 1664418 |
| ofloxacin, a new broad-spectrum fluoroquinolone. results from a multicenter, national comparative activity surveillance study. the ofloxacin surveillance group. | ofloxacin, a newer broad-spectrum fluoroquinolone, was evaluated against 6967 clinical isolates in a multicenter surveillance trial using a standardized disk diffusion method. thirty-five geographically diverse laboratories contributed zone diameter results for two (ofloxacin and ciprofloxacin) to five (ofloxacin, ciprofloxacin, ampicillin, cefaclor, and cefixime) antimicrobial agents, depending on the site of infection. ofloxacin was determined to have the widest spectrum of activity and potent ... | 1992 | 1643819 |
| reliability of a bioluminescence atp assay for detection of bacteria. | the reliability of bioluminescence assays which employ the luciferin-luciferase atp-dependent reaction to evaluate bacterial counts was studied, both in vitro and on urine specimens. bioluminescence and cultural results for the most common urinary tract pathogens were analyzed. furthermore, the influence of the culture medium, of the assaying method, and of the phase of growth on bioluminescence readings was studied. results show that proteus, providencia, and morganella strains are not correctl ... | 1992 | 1629329 |
| in vitro activity of cefquinome, a new cephalosporin, compared with other cephalosporin antibiotics. | the in vitro activity of cefquinome, a new aminothiazolyl cephalosporin with a c-3 bicyclic pyridinium group, was compared with ceftazidime, cefpirome, and cefepime. cefquinome inhibited members of the enterobacteriaceae at less than or equal to 0.5 microgram/ml for escherichia coli, klebsiella pneumoniae, k. oxytoca, citrobacter diversus, salmonella shigella, proteus mirabilis, morganella, and providencia. although most citrobacter freundii and enterobacter cloacae were inhibited by less than 2 ... | 1992 | 1611848 |
| asymptomatic bacteriuria, urinary antibody, and survival in the institutionalized elderly. | to compare clinical status of elderly institutionalized subjects with asymptomatic bacteriuria and normal urinary antibody to those with elevated urinary antibody to the major outer membrane of escherichia coli. | 1992 | 1587980 |
| [typing by isoelectric focusing of beta-lactamase enzymes in klebsiella and enterobacter strains resistant to the new beta-lactam antibiotics]. | resistance to new generation beta-lactam antibiotics in gram-negative bacteria is increasing worldwide. this resistance is due to ebs enzymes in klebsiella spp., and type-i chromosomal enzymes in enterobacter spp., citrobacter, p. aeruginosa, providencia, m. morganii and s. marcescens. in this study, the types of beta-lactamases in 16 klebsiella spp. and 15 enterobacter spp. which are resistant to newer beta-lactam antibiotics was investigated by isoelectric focusing. the results of the study sh ... | 1992 | 1574017 |
| bacteremia in a long-term-care facility: a five-year prospective study of 163 consecutive episodes. | the clinical features, microbiological characteristics, and outcomes of 163 episodes of bacteremia occurring at a long-term-care facility were evaluated. the rate of nosocomial bacteremia increased from 0.20 to 0.36 cases/1,000 patient-days from 1985 to 1989; there was a parallel increase in the rate of all nosocomial infections combined. bacteremia was documented in 6.5% of all hospital-acquired infections. the majority of isolates were gram-negative, and providencia stuartii was the most commo ... | 1992 | 1562655 |
| in vitro activity of cefodizime. | cefodizime is a bactericidal cephem with the typical broad spectrum activity of an aminothiazolyl cephalosporin, including both gram-positive and gram-negative bacteria: its mic90 is 0.125 mg/l for streptococcus pneumoniae, streptococcus pyogenes and other streptococci; and 0.05 mg/l for haemophilus spp., neisseria meningitidis, neisseria gonorrhoeae and moraxella catarrhalis; while beta-lactamase positive strains of m. catarrhalis require 1 mg/l. less than 1 mg/l is needed for escherichia coli, ... | 1992 | 1526673 |
| [antimicrobial activities of ceftriaxone against clinically isolated strains]. | antibiotic activities (mics) of ceftriaxone (ctrx) against 1,210 strains of bacteria including 28 spp. isolated in 1987 and 1990 were compared with those of other cephems. 1. when compared to data on clinically isolated strains reported in the early 1980s, strains of the following species isolated in 1990 showed extremely elevated mic90s of ctrx: staphylococcus spp., streptococcus pneumoniae, escherichia coli, citrobacter spp., enterobacter spp., serratia spp., proteus vulgaris, morganella morga ... | 1992 | 1522669 |
| in vitro and in vivo antibacterial activities of levofloxacin (l-ofloxacin), an optically active ofloxacin. | the antibacterial activity of levofloxacin was compared with those of ofloxacin, ciprofloxacin, and other antibiotics. in general, levofloxacin was equally active or up to fourfold more active than ofloxacin against all 801 organisms tested. levofloxacin was twofold [corrected] more active than ciprofloxacin against streptococcus pneumoniae and 2- to 4-fold more active than ciprofloxacin against staphylococcus aureus, xanthomonas maltophilia, and bacteroides fragilis. levofloxacin was two- to ei ... | 1992 | 1503449 |
| [antimicrobial activities of ceftazidime on fresh clinical isolates]. | antimicrobial activity of ceftazidime (caz) was compared with those of other cephem antibiotics against clinically isolated strains sent to us by medical institutions throughout japan in 1989 and 1991. those strains separated and identified from samples collected from patients with various infections were also examined, and the following results were obtained. 1. the results suggested that, compared with reports of studies conducted with clinical isolates in early 1980's, mic90 of caz in 1991 we ... | 1992 | 1494227 |
| bsubi--an isospecific restriction and modification system of psti: characterization of the bsubi genes and enzymes. | the enzymes of the bacillus subtilis bsubi restriction/modification (r/m) system recognize the target sequence 5'ctgcag. the genes of the bsubi r/m system have been cloned and sequenced and their products have been characterized following overexpression and purification. the gene of the bsubi dna methyltransferase (m.bsubi) consists of 1503 bp, encoding a protein of 501 amino acids with a calculated m(r) of 57.2 kd. the gene of the restriction endonuclease (r.bsubi), comprising 948 bp, codes for ... | 1992 | 1480472 |
| a species-specific dna probe for providencia stuartii identification. | a dna probe is described that can be used for identification of providencia stuartii by means of filter hybridization assays. the probe, which is a fragment of the p. stuartii phon gene coding for an acid phosphatase, appeared to be able to recognize only p. stuartii strains in slot-blot hybridization experiments performed with total dna extracted from 545 strains of 64 different gram-negative bacterial species, including all the major representatives of the family enterobacteriaceae. owing to t ... | 1992 | 1474980 |
| the primary structure of providencia rettgeri penicillin g amidase gene and its relationship to other gram negative amidases. | the nucleotide sequence of penicillin g amidase (pa,e.c.3.5.1.11) of providencia rettgeri was determined. we aligned our p. rettgeri pa with other known gram negative periplasmically located beta-lactam amidases. the analysis revealed a high homology with other enterobacteric amidases (60%-65%), while with similar pseudomonas sp. amidases the homology exceeded 25%. these homologies indicate their common ancestry. | 1992 | 1472713 |
| the effect of repeated instillations of antiseptics on catheter-associated urinary tract infections: a study in a physical model of the catheterized bladder. | the activity of three antiseptic bladder washout solutions was examined in a physical model of the catheterized bladder. tests were performed against cultures of four common urinary tract pathogens that had established themselves in the model and colonized the surfaces with biofilm. double instillations of chlorhexidine (0.02% w/v) at 6-h intervals failed to eliminate pseudomonas aeruginosa, proteus mirabilis, and providencia stuartii from the bladder model. escherichia coli, however, was suscep ... | 1992 | 1462478 |
| pathogenesis of providencia alcalifaciens-induced diarrhea. | providencia alcalifaciens is a member of the family enterobacteriaceae. there are reports that p. alcalifaciens can cause diarrhea, but the mechanism(s) by which it causes diarrhea is known. we studied p. alcalifaciens isolated from a child and two adults with diarrhea for enteropathogenicity. the three isolates did not exhibit any characteristic adherence to cultured hep-2 cell monolayers, and they did not produce enterotoxins, cytotoxins, or keratoconjunctivitis in the sereny test. two isolate ... | 1992 | 1452332 |
| [antibacterial activities of sisomicin against fresh clinical isolates]. | to investigate antibacterial activities of sisomicin (siso), mics of siso as well as other aminoglycosides (ags) were determined against many clinical isolates which were obtained in 1991. results are summarized below: 1. no siso-resistant strains were observed among isolates of escherichia coli, citrobacter diversus, klebsiella pneumoniae, klebsiella oxytoca, enterobacter aerogenes, proteus mirabilis and morganella morganii. 2. in comparison with the results of our previous study against isolat ... | 1992 | 1433905 |
| in vitro activity and susceptibility to hydrolysis of s-1006. | the in vitro activity of s-1006, the active component of a new orally absorbed cephalosporin, s-1108, inhibited 90% of staphylococcus aureus isolates at less than or equal to 2 micrograms/ml, 90% of group a, b, c, f, and g streptococci and streptococcus pneumoniae isolates at less than or equal to 0.12 microgram/ml, and all haemophilus influenzae isolates at less than or equal to 0.06 microgram/ml. although 50% of the members of the family enterobacteriaceae were inhibited by less than or equal ... | 1992 | 1416835 |
| comparative in vitro activity and beta-lactamase stability of ru29246, the active metabolite of hr916b. | hr 916b is a new orally absorbed cephalosporin. in tests its active metabolite, ru29246, inhibited streptococcus pyogenes, streptococcus agalactiae and streptococcus pneumoniae at less than or equal to 0.12 micrograms/ml, which is similar to the antibacterial activity of cefuroxime, and was more active than cefaclor. it was also more active (mic 2 micrograms/ml) than cefixime, cefuroxime, cefaclor and cefotaxime against staphylococci. ru29246 inhibited escherichia coli, klebsiella pneumoniae, ci ... | 1992 | 1396779 |
| transformation of n epsilon-cbz-l-lysine to cbz-l-oxylysine using l-amino acid oxidase from providencia alcalifaciens and l-2-hydroxy-isocaproate dehydrogenase from lactobacillus confusus. | biotransformations were developed to oxidize n epsilon-carbobenzoxy(cbz)-l-lysine and to reduce the product keto acid to l-cbz-oxylysine. lysyl oxidase (l-lysine: o2 oxidoreductase, ec 1.4.3.14) from trichoderma viride was relatively specific for l-lysine and had very low activity with n epsilon-substituted derivatives. l-amino acid oxidase (l-amino acid: o2 oxidoreductase [deaminating], ec 1.4.3.2) from crotalus adamanteus venom had low activity with l-lysine but high activity with n epsilon-fo ... | 1992 | 1368913 |
| [occurrence of p.fimbrii in strains from selected genera of enterobacteriaceae]. | this study was aimed at recognition of frequency of occurrence of p fimbriae in strains of escherichia coli isolated from samples of feces of children with symptoms of diarrhoea and at search of these adhesions in strains representing other than escherichia genera of enterobacteriaceae strains. one hundred forty laboratory strains were investigated. they belonged to genus citrobacter, enterobacter, hafnia, klebsiella, morganella, proteus, providencia, salmonella, shigella, and yersinia. also wer ... | 1992 | 1363960 |
| horizontal transfer of a phosphatase gene as evidence for mosaic structure of the salmonella genome. | the genomes of escherichia coli and salmonella typhimurium are similar with respect to base composition, chromosome size, and the order, orientation and spacing of genes, but differ with respect to some 29 'loops', regions unique to one species. to evaluate the genetic basis for the structure and organization of the enteric bacterial genomes, we examined the gene encoding a non-specific acid phosphatase (phon) which maps to a loop at 96 min on the s.typhimurium chromosome. we detected atypical b ... | 1992 | 1339343 |
| molecular epidemiology of endemic ciprofloxacin-susceptible and -resistant enterobacteriaceae. | to elucidate the epidemiology of widespread ciprofloxacin resistance in our veterans affairs medical center using whole cell dna analysis. | 1992 | 1337751 |
| in vitro activity of opc-17116 compared to other broad-spectrum fluoroquinolones. | the in vitro activity of opc-17116 was compared to that of five similar fluoroquinolones (ciprofloxacin, enoxacin, norfloxacin, ofloxacin and temafloxacin). a total of 700 isolates from recent cases of clinical bacteremia were tested. fifty additional stock strains with well-characterized resistance mechanisms were also processed. the minimal concentrations inhibiting 90% of strains (mic90) of enterobacteriaceae species were for opc-17116 0.015-0.5 micrograms/ml and for ciprofloxacin 0.015-0.25 ... | 1992 | 1327789 |
| modified macconkey medium which allows simple and reliable identification of providencia stuartii. | this work describes a modified macconkey medium (mcp medium) enabling the simple identification of providencia stuartii, an emerging nosocomial pathogen. a total of 813 strains, belonging to the families enterobacteriaceae and pseudomonadaceae, were tested on mcp medium; all p. stuartii strains were phosphatase positive, as were 97.5% of morganella morganii strains, in contrast with all other tested organisms. a simple discriminating test, such as the ornithine or citrate test, allowed identific ... | 1992 | 1323575 |
| in vitro activity of sparfloxacin compared with those of five other quinolones. | the in vitro activity of sparfloxacin, a new difluorinated quinolone, was evaluated against 857 gram-positive and gram-negative clinical isolates and compared with those of ciprofloxacin, norfloxacin, ofloxacin, fleroxacin, and lomefloxacin. the mic of sparfloxacin for 90% of the members of the family enterobacteriaceae tested was 0.5 microgram/ml (range, 0.06 to 4.0 micrograms/ml); only for members of the genera serratia, citrobacter, and providencia were mics above 1 microgram/ml. some 90% of ... | 1992 | 1320362 |
| [analysis of urinary tract infections in hospitalized elderly patients, with particular reference to the use of diapers]. | we investigated the clinical and laboratory data of 215 hospitalized patients (mean age were 76.9 +/- 12.1) to analyze both the characteristics of senile uti and the influence of the way of urination. uti was present in 121 of 1897 patients (6.4%), 95 of whom (78.5%) were female. comparison of the parameters between non-infected and infected patients were as follows: body temperature was 36.57 +/- 0.64 degrees c vs. 37.49 +/- 0.77 degree c; wbc, 5410 +/- 2040/microliters vs. 7260 +/- 3230/microl ... | 1992 | 1294665 |
| efficacy of cinoxacin in urinary tract infections. | cinoxacin, a new synthetic antibacterial agent with in vitro activity against all species of enterobacteriaceae, was used in the treatment of urinary tract infections in 20 patients. the dose of cinoxacin was 250 mg orally every 6 h for 10 days. the etiological agents were escherichia coli in fifteen, klebsiella-enterobacter in five, proteus mirabilis in two, and providencia in one. the minimal inhibitory concentration for these organisms ranged from 2 to 64 mug/ml. eleven of the 20 patients had ... | 1976 | 1259405 |
| in vitro activity of bl-s640 against gram-negative bacilli and staphylococcus aureus compared with activity of four other semisynthetic cephalosporins. | the in vitro activity of bl-s640 (cefatrizine) was determined against 674 recent clinical isolates of staphylococcus aureus and enterobacteriaceae. activity against s. aureus was less than that of cephapirin, cephalothin, and cefazolin, but greater than that of cephalexin. activity against gram-negative isolates was variable: bl-s640 was slightly less potent than cefazolin against escherichia coli and klebsiella, but more active than the other compounds. as for the more resistant gram-negative g ... | 1976 | 1259401 |
| the quantitative swab culture and smear: a quick, simple method for determining the number of viable aerobic bacteria on open wounds. | the quantitative swab culture is a reliable method for quantifying the number of viable bacteria colonizing open wounds. for open wounds in burn patients, the swab bacterial count is linearly related to biopsy quantification of viable bacteria in the underlying tissue. this technique is simple and requires no surgical manipulation of the wound. for a wound of uniform appearance, the standard deviation of a single swab culture from the mean log bacterial count for a series of cultures from widely ... | 1976 | 1255833 |
| emergence of resistance to amikacin during treatment of burn wounds: the role of antimicrobial susceptibility testing. | amikacin has been used to treat providencia stuarii infections on the burn service at los angeles county/university of southern california medical center since march, 1973. the median minimal inhibitory concentration (mic) of strains collected on this service prior to the introduction of amikacin was 3.13 mug. per milliliter, whereas the median mic of strains collected during the last 4 months of the study was 12.5 mug per milliliter. high bactericidal concentrations (mbc) noted at the time of i ... | 1976 | 1246678 |
| [differentiation of proteus-providencia group bacteria according to the fatty acid makeup determined by a gas chromatographic method]. | 1975 | 1206145 | |
| malaria and hemogregarines from lizards of the western caribbean islands of san andrés and providencia. | 1975 | 1181636 | |
| evaluation of tyrosine medium for the identification of enterobacteriaceae. | use of the tyrosine medium in the identification of members of the family enterobacteriaceae form the basis of this paper. six hundred and twenty-three strains were tested for their property of tyrosine degradation. three hundred and seventy-two strains were positive in 24 h and an additional eight strains were positive in 48 to 72 h. these positive strains consisted of all 344 strains of the proteus-providencia group, all 25 strains of citrobacter diversus, and three strains of atypical c. freu ... | 1975 | 1176617 |
| use of bile-esculin agar for rapid differentiation of enterobacteriaceae. | bile-esculin agar has been used for several years for the presumptive identification of group d streptococci. all members of the enterobacteriaceae family will also grow on this medium, but only certain ones can hydrolyze esculin to 6,7-dihydroxycoumarin, which reacts with iron to produce a characteristic blackening of the medium. one thousand and six cultures from clinical specimens representing 20 genera were isolated and identified. heavy inocula from fresh pure culture isolates on heart infu ... | 1975 | 1176613 |
| biotypes of proteus rettgeri. | examination of 729 isolates of proteus rettgeri showed that 674 reacted positively in tests for phenylalanine deamination, indole production, growth on citrate, and acid production from meso-inositol, and negatively for l-ornithine decarboxylation and acid production from lactose, maltose, d-xylose, and l-arabinose. only 51 isolates differed in one, and four differed in two of these ten reactions, which were taken as the core characteristics of the species. on the basis of additional tests (acid ... | 1975 | 1176597 |
| in vitro evaluation of bl-s640, a new oral cephalosporin antibiotic. | bl-s640, a new oral cephalosporin analogue, was evaluated in vitro against 102 gram-negative and 80 gram-positive bacteria. the antimicrobial spectrum was similar to that of previous cephalosporin analogues. good antimicrobial activity against strains of escherichia coli, klebsiella, staphylococci, and streptococci was demonstrated. relatively poor activity and/or resistance was noted among most strains of proteus, providencia, pseudomonas, and serratia. in comparative studies bl-s640 had better ... | 1975 | 1167042 |
| specialized transduction of kanamycin resistance in a providence strain. | properties of a transducing system with a phage able to transduce a kanamycin-resistance marker of the t compatibility group plasmid r394 at a frequency of 2 times 10(-2)/plaque-forming unit adsorbed are described. the phage was detected in providence strain p29 transduced to kanamycin resistance by providence phage pl25 grown on this strain harbouring the r factor. four p29 transductants, specially selected at the lowest multiplicities of infection of the high frequency transducing (hft) phage, ... | 1975 | 1151340 |
| bl-s 640, a cephalosporin with a broad spectrum of antibacterial activity: properties in vitro. | bl-s 640 was evaluated in vitro by comparison with cephalothin, cephaloridine, cefazolin, and cephalexin. the new compound was more active than the control cephalosporins against most major gram-negative and some gram-positive species. moreover, its antibacterial spectrum included strains of enterobacter, proteus morganii, p. rettgeri, and providencia stuartii, species generally resistant to the other cephalosporins. bl-s 640 was an effective bactericidal agent for strains of various species of ... | 1975 | 1137381 |
| [intrageneric o-antigenic relations of providencia bacteria]. | the authors present literature and personal data on the intragenera o-antigenic relations of the strains of a collection of bacteria belonging to providencia genus, including standard strains of 53 serological o-groups whose antigenic interrelations were studied serologically in the tests of agglutination and adsorption of agglutinins. experimental results confirmed the presence of unilateral relations by the o-antigen between the serological groups 01-021, 03-021 and bilateral relations between ... | 1975 | 1124619 |
| [some problems of nomenclature and taxonomy of the enterobacteriaceae]. | 1975 | 1106093 | |
| [in vitro examination on antibacterial activities of broad-spectrum antibiotics against gram-negative clinical isolates (author's transl)]. | in vitro studies were undertaken on clinically isolated strains of various bacteria to examine the antibacterial activity of ampicillin (ab-pc), carbenicillin (cb-pc), sulbenicillin (sb-pc) cephalothin (cet), cefazolin (cez) and gentamicin (gm). fifty three % of escherichia coli strains 53.3% of citrobacter sp., 80% of proteus mirabilis, 42.9% of morganella and 80% of bacteroides sp. were susceptible (mic being not higher than 12.5 mug/ml) to ab-pc. the eight other species were not so susceptibl ... | 1975 | 1104913 |
| comparative studies on generalized transducing bacteriophages of proteus mirabilis, phim and pi1. | comparative studies were made on the generalized transducing bacteriophages of proteus mirabilis phim (nakaya and rownd), pi1(böhme), and a clear plaque-forming mutant phim-c, derived from phim. electron microscopic observations revealed that these phages were morphologically identical, indicating that they belonged to the group c of bradley's classification, or to the type c1 of ackermann's classification. phages phim and pi1 formed characteristic turbid plaques different from each other, and t ... | 1975 | 1097767 |
| variation in expression of sex factor genes in the proteus-providencia group relative to escherichia coli. | several instances of anomalous expression of genes introduced from escherichia coli k-12 into proteus mirabilis have been described. it is shown here that control of sex pilus synthesis directed by the f-like r factor r1 and its depressed derivatives r1-16 (o-c) and r1-19 (i-minus) is also anomalous in p. mirabilis. piliation in cells bearing the depressed plasmids is expressed at a lower level than in e. coli k-12, and repression is absent in r1-carrying cells. preliminary results show a simila ... | 1975 | 1095557 |
| [aminoglycoside antibiotics from clinical viewpoint]. | indications, side effects, dosage and several pharmacokinetic properties of gentamicin, tobramycin, sisomicin, kanamycin, amikacin, and streptomycin are delt with in the first part. hereafter, some aspects are briefly mentioned concerning combinations of antibiotics with aminoglycosides, as well as indications for the evaluation and analysis of the aminoglycoside concentration in the serum. | 1975 | 1095500 |
| [identification of conditionally pathogenic enterobacteria in laboratory practice in the diagnosis of acute intestinal diseases]. | identification of 361 cultures isolated from patients suffering from various acute intestinal diseasesand from persons who had sustained them, as well as from contacts and persons examined prophylactically with the use of various biochemical tests showed that ty their taxonomic properties the cultures were referred to conditionally-pathogenic representatives of enterobacteriaceae of the corresponding genera:citrobacter, hafnia, klebsiella, proteus, providencia. serological typing of the strains ... | 1976 | 1007731 |
| tobramycin, amikacin, sissomicin, and gentamicin resistant gram-negative rods. | sensitivities to gentamicin, sissomicin, tobramycin, and amikacin were compared in 196 gentamicin-resistant gram-negative rods and in 212 similar organisms sensitive to gentamicin, mainly isolated from clinical specimens. amikacin was the aminoglycoside most active against gentamicin-resistant organisms, pseudomonas aeruginosa, klebsiella spp, escherichia coli, proteus spp, providencia spp, and citrobacter spp being particularly susceptible. most of the gentamicin-resistant organisms were isolat ... | 1976 | 1000196 |
| laboratory evaluation of 3-(5-tetrazolyl) penam, a new semisynthetic beta-lactam antibacterial agent with extended broad-spectrum activity. | in the new agent 3-(5-tetrazolyl)penam, hereafter referred to as cp-35,587, the carboxyl function at c3 in the penicillin nucleus has been replaced with the 5-tetrazolyl moiety. marked changes in spectrum and resistance to gram-negative beta-lactamases, particularly with regard to klebsiella pneumoniae isolates, were conferred by this modification. the anti-klebsiella activity clearly distinguishes the antibacterial spectrum of cp-35,587 from any known broad-spectrum penicillin. compared to oral ... | 1976 | 984745 |
| [providencia isolated from the stools of patients with gastroenteritis]. | 92 providencia strains were isolated from the stools of patients with gastroenteritis. all specimens were negative for other pathogenes such as salmonella, shigella, enteropathogenic e. coli and vibrios. viral etiology was not investigated. the distribution according to years and months is shown in the table. 17 isolations made during august, seemed rather high and gave the impression of a small epidemic. | 1976 | 979696 |
| a numerical taxonomic study of proteus-providence bacteria. | 1976 | 956066 | |
| the mapping and sequence determination of the single site in phix174am3 replicative form dna cleaved by restriction endonuclease pst i. | 1976 | 955064 | |
| providencia stuartii, a hospital pathogen: potential factors for its emergence and transmission. | the emergence of providencia stuartii as a hospital pathogen in a burn unit was demonstrated by routine infection surveillance. the organism was initially recognized in a burn wound and subsequently in urine or sputum. compared to controls, those patients harboring p. stuartii were similar in age and percentage of body surface burned and were more likely to have been in one of the two burn unit rooms, (p less than 0.02). infection with p. stuartii was independent of duration in the intensive car ... | 1976 | 952286 |
| antibacterial activity of selected beta-lactam and aminoglycoside antibiotics against cephalothin-resistant enterobacteriaceae. | the in vitro antibacterial activity of four beta-lactam antibiotics (cefatrizine [bl-s640], cefamandole, cefoxitin, and carbenicillin) and three aminoglycosides (amikacin, gentamicin, and tobramycin) was determined against 197 strains of cephalothin-resistant enterobacteriaceae. eighty strains were found to be gentamicin-sensitive, and 117 were found to be gentamicin-resistant. carbenicillin was the most active beta-lactam antibiotic against gentamicin-sensitive serratia marcescens and enterobac ... | 1976 | 949175 |
| [activity of extracellular and intracellular nucleodepolymerases of bacteria of the proteus--providencia group during the process of growth of a cellular population]. | 1977 | 899430 | |
| a site-specific endodeoxyribonuclease from streptomyces albus cmi 52766 sharing site-specificity with providencia stuartii endonuclease psti. | a class ii site-specific endodeoxyribonuclease (salpi) was identified in cell-free extracts of streptomyces albus cmi 52766 after high speed centrifugation and fractionation through bio gel ao.5m. salpi cleaves lambda dna into at least 18 fragments. five cleavage sites were located in the linear lambda map by the use of double and triple restriction enzyme digests involving ecori, hindiii, salgi and another new streptomyces enzyme, saci. the results were indistinguishable from those previously o ... | 1977 | 896480 |
| serologic relationship of fimbriae among enterobacteriaceae. | the existence of serological relationship of fimbriae among serotypes of the same genus and among genera of enterobacteriaceae was determined by agglutination and absorption procedures. it was found that fimbriae of different serotypes of the same genus and among the genera a) escherichia, shigella and klebsiella, and b) salmonella, arizona and citrobacter were more or less antigentically related. no relationship was found among fimbriae of the edwardsiella, enterobacter, hafnia, serratia, prote ... | 1977 | 880000 |
| intracellular crystalline deposits by bacteria grown in urine from a stone former. | several species of bacteria were found to form an intracellular crystalline material when grown in urine obtained from a subject with a history of infrequent renal calculi formation. the following species: proteus mirabilis, proteus rettgeri, providencia stuartii, enterobacter aerogenes, enterobacter cloacae, escherichia coli, and candida albicans formed crystals of hydroxyapatite. klebsiella pneumoniae, pseudomonas aeruginosa, and proteus vulgaris produced crystals of calcite -ii. several of th ... | 1977 | 844994 |
| in vitro studies with netilmicin compared with amikacin, gentamicin, and tobramycin. | netilmicin, a new semisynthetic aminoglycoside derived by ethylation of the 1-n position of the deoxystreptamine ring of sisomicin, was tested in vitro with 4,070 strains of gram-negative bacilli isolated at the ucla medical center during 1975 to 1976, using the agar dilution technique and an inoculum of approximately 10(4) organisms. results were compared with those simultaneously obtained for amikacin, gentamicin, and tobramycin. using mueller-hinton medium, inhibitory concentrations in broth ... | 1977 | 836015 |
| antimicrobial activity in vitro of netilmicin and comparison with sisomicin, gentamicin, and tobramycin. | the antimicrobial activity of netilmicin, a new semisynthetic aminoglycosidic aminocyclitol, was determined against 123 recent gram-negative clinical isolates susceptible to gentamicin and 60 isolates resistant to either sisomicin, gentamicin, or tobramycin. the minimal inhibitory concentrations and minimal bactericidal concentrations of netilmicin, sisomicin, gentamicin, and tobramycin against pseudomonas, escherichia coli, klebsiella, enterobacter, proteus mirabilis, and indole-positive proteu ... | 1977 | 836009 |
| evaluation of fosfomycin in an intensive care unit. | sensitivity to fosfomycin has been studied and recorded throughout a period of 12 months in the bacteriological isolations originating from this intensive care unit. the 548 samples were biological products obtained from patients admitted to this unit (bronchial exudates, urine, wounds, blood, cava catheters and cerebrospinal fluid). the highest percentage of sensitivity was given by s. aureus coagulase (+), s. fecalis and e. coli (91, 89 and 84% respectively), and the least by p. aeruginosa and ... | 1977 | 832542 |
| [on the growth of various enterobacteriaceae, pseudomonas aeruginosa and alkaligenes spec. in distilled water, de-ionized water, tap water, and mineral salt solution (author's transl)]. | the behaviour of 12 strains of gram-negative bacteria was analysed in media having a low content of nutrients. sterile tap water, de-ionized water, aqua bidestillata and mineral salt solution were used. it was found that serratia marcescens, pseudomonas aeruginosa, enterobacter, klebsiella and citrobacter are those with the most frequently observed growth. in the mineral salt solution survived also providencia, e. coli, erwinia, hafnia, and alkaligenes and reached max. colony numbers of some 100 ... | 1976 | 828367 |
| evolution of phix174 iii. restriction map of s13 and its alignment with that of phix174. | 1976 | 827112 | |
| susceptibility of recently isolated bacteria to amikacin in vitro: comparisons with four other aminoglycoside antibiotics. | in vitro tests for susceptibility to amikacin and to four other aminoglycoside antibiotics were carried out with strains of many bacterial species by use of an agar dilution method and an inocula replicator. in general, amikacin was as active as or more active against most of the organims than kanamycin, neomycin, and streptomycin; in particular, amikacin was active against strains resistant to one or more of these three antibiotics. amikacin was more active than gentamicin against strains of no ... | 1976 | 825588 |
| in vitro susceptibility of recently isolated gram-negative bacteria to gentamicin, sisomicin, tobramycin, and amikacin. | the emergence of bacteria with r-factor-mediated resistance transferable to many strains of pseudomononas aeruginosa, escherichia coli, klebsiella pneumoniae, serratia marcescens, and some proteus and providencia species has been reported in hospitals in the rhine-main region of germany. in a comparative study, 1,250 strains belonging to 12 clinically important bacterial species were tested for susceptibility to gentamicin, sisomicin, tobramycin, and amikacin by the tube dilution methods. gentam ... | 1976 | 825585 |
| in vitro susceptibility of clinically important bacteria to amikacin: correlation of results of broth dilution and disk sensitivity tests and effect of medium composition. | minimal inhibitory concentrations of amikacin for 296 strains of gram-positive and gram-negative bacteria determined in mueller-hinton broth by the method recommended by the international collaborative study group confirmed previous observations that amikacin is effective against current clinical isolates sensitive to gentamicin and that strains moderatly sensitive or resistant to gentamicin are often inhibited by clinically achievable concentrations. a simple linear regression analysis was used ... | 1976 | 825584 |
| in vitro susceptibility of gentamicin-resistant enterobacteriaceae and pseudomonas aeruginosa to netilmicin and selected aminoglycoside antibiotics. | netilmicin (sch 20569), a semisynthetic aminoglycoside related to gentamicin c(1a), was evaluated in vitro in agar dilution testing against 224 different clinical isolates of gentamicin-resistant enterobacteriaceae and pseudomonas aeruginosa in parallel with amikacin, gentamicin, sisomicin, and tobramycin. netilmicin showed a very high degree of activity against gentamicin-resistant organisms, but amikacin was more active in vitro, particularly against providencia stuartii and p. aeruginosa. sis ... | 1976 | 825036 |
| comparative activity of netilmicin, gentamicin, amikacin, and tobramycin against pseudomonas aeruginosa and enterobacteriaceae. | netilmicin (sch 20569), a semisynthetic aminoglycoside antibiotic, was compared with gentamicin, tobramycin, and amikacin against 242 clinical isolates of pseudomonas and enterobacteriaceae. the minimum inhibitory concentration (mic) was determined in both solid and liquid media. netilmicin exhibited typical aminoglycoside properties, such as little effect of inoculum size on mic, relatively small gap between mic and minimum bactericidal concentration, and potentiation of anti-pseudomonas activi ... | 1976 | 825032 |
| in vitro comparison of netilmicin, a semisynthetic derivative of sisomicin, and four other aminoglycoside antibiotics. | one hundred isolates of pseudomonas and enterobacteriaceae, of which 85 were chosen because of their resistance to gentamicin or amikacin, were tested for susceptibility to netilmicin (sch 20569), a new semisynthetic derivative of sisomicin, and to four other aminoglycosides. tests were performed in mueller-hinton agar and, with 43 of these isolates, also in mueller-hinton broth. most isolates of escherichia coli, klebsiella, enterobacter, citrobacter, and serratia that were gentamicin resistant ... | 1976 | 825021 |
| susceptibility of clinically important gram-negative bacilli to 15 antibiotics. comparison of patterns in poland and federal republic of germany. | three hundred and sixty strains of gram-negative bacilli (escherichia coli, salmonella enteritidis, enterobacter cloacae, providencia, indole-positive and indole-negative proteus, klebsiella pneumoniae, pseudomonas aeruginosa and serratia marcescens), were isolated by random in poland and germany, and tested by agar dilution method for susceptibility to 15 antimicrobial agents, including six cephalosporin derivatives, colistin, gentamycin and tobramycin, three newer tetracyclines, ampicillin and ... | 1976 | 824896 |
| sensitivity of providence to antiseptics and disinfectants. | seventy isolates of providence were obtained from urinary tract infections in patients from five hospitals. they were all identified as providence b (providencia stuartii). a typing system was devised for these organisms based on their production of and sensitivity to bacteriophage and bacteriocins. using this system, 27 distinct strains were recognized, and it was clear that many patients had been infected with the same strain. the minimum inhibitory concentrations of six antiseptics and disinf ... | 1976 | 824328 |
| [gram-negative infections in severe thermal injury]. | among 78 patients with persistant bacteriemia the latter was induced by staphylococci in 59 and by gram-negative microflora in 19 patients. in 14 of 19 patients gram-negative septicemia was preceded by staphylococcic one. gram-negative septicemia would condition in patients the development of pyemic foci not only in the wound area but also in some portions of the body and in internal organs as well. among 19 patients with gram-negative septicemia 12 patients died, while among 59 patients with st ... | 1976 | 823688 |
| susceptibility of "enterobacteria" to penicillins, cephalosporins, lincomycins, erythromycin, and rifampin. | agar dilution tests for susceptibility of gram-negative rods and enterococci were done with a number of penicillins, cephalosporins, lincomycin analogues, erythromycin, and rifampin. many in the first three categories were investigational drugs. all were generally less active than aminoglycoside and tetracycline antibiotics against gram-negative rods and more active against enterococci. cephalosporins as a group were more active than penicillins against klebsiella pneumoniae and escherichia coli ... | 1976 | 823280 |
| oral vaccination against porteus mirabilis. | mice given a single dose of proteus vaccine orally were protected against 1 mld (minimum lethal dose) of autologous proteus mirabilis by the fourth day after vaccination. three doses of oral vaccine induced protection against 1 mld autologous challenge for 7 days after vaccination and partial protection for a further 8 weeks. cross-protection against different strains of pr. mirabilis and against some strains of pseudomonas aeruginosa, serratia marcescens and providencia species was found in mic ... | 1976 | 822863 |
| [a microbiological survey of stool samples from normal and diarrheic persons in 2 districts of ankara]. | 1975 | 820946 | |
| comparative evaluation of five aminoglycosides for treatment. | gentamicin, tobramycin, sisomicin, amikacin and kanamycin are compared for therapeutic use by correlating the in vitro minimal inhibitory concentration with the in vivo concentration of the antibiotic attainable in the serum at half the time intervall between two administrations of the drugs. using this method of evaluation, e. coli, enterobacter and sensitive strains of the klebsiella and pseudomonas species can be treated in principle equally well with gentamicin, tobramycin and sisomicin, and ... | 1976 | 820656 |
| comparison of coarse mesh gauze with biologic dressings on granulating wounds. | twenty patients with large area granulating wounds were selected for the study. on each patient, a small area of uniform appearance was divided into four subareas, and each subarea was randomly assigned treatment with a single 24 hour application of cadaver allograft, fresh porcine xenograft, formalinized xenograft, or "wet-to-dry" applications of coarse mesh gauze changed three times daily. at 24 hours, all four areas were uncovered. the subareas were ranked in terms of appearance on a best, se ... | 1976 | 820214 |
| polymicrobic bacteriuria: significant association with bacteremia. | current clinical practice states that a urine culture yielding three or more isolates must be considered a contaminated specimen and discarded. the validity of this practice was tested by reviewing all patients at the west haven veterans administration hospital with positive blood cultures for 1 year to determine how many were associated with polymicrobic bacteriuria (two or more urine isolates each present at greater than 10(5) colonies/ml). during 1973 there were 18 patients who had bacteremia ... | 1976 | 818108 |
| bactericidal efficacy of sch 20569 and amikacin against gentamicin-sensitive and -resistant organisms. | sch 20569 is a semisynthetic derivative of gentamicin with activity against many gentamicin-resistant gram-negative bacilli. we compared its bactericidal action with that of gentamicin and amikacin against 171 clinical isolates of enterobacteriaceae, staphylococcus aureus, and pseudomonas aeruginosa. sch 20569 and amikacin showed markedly greater activity than gentamicin against escherichia coli, klebsiella, enterobacter, citrobacter, and indole-positive proteus, primarily by virtue of their let ... | 1976 | 817661 |
| ["in vitro" determination of bacterial sensitivity to tobramycin (author's transl)]. | the authors report the tobramycin minimal inhibitory concentration (mic) of 264 strains (dilution in mueller-hinton agar). staphylococcus aureus (96 strains) have a mic of 0.02 mcg/ml, 80 % being inhibited by 0.07 mcg/ml. most enterobacteriaceae (70 strains) are sensitive to 0.7 mcg/ml ; providencia are the most resistant (mic 11.88 mcg/ml). among pseudomonas aeruginosa (98 strains, mic : 11.57 mcg/ml) 50 % are inhibited by 0.30 mcg/ml, 80 % by 18.8 mcg/ml. relationships of mic to zone diameters ... | 1976 | 817253 |
| [resistance patterns of certain enterobacteriaceae in hospital and outpatients, with particular reference to trimethoprim-sulfamethoxazole (author's transl)]. | the relative sensitivities of certain enterobacteriaceae strains obtained from impatient and outpatient material for investigation against trimethoprim-sulf-amethoxazole, ampicillin, cephalothin, gentamicin and tetracycline are reported. the efficacy of the substances tested was very varied, the resistance rates to gentamicin and trimethoprim-sulfamethoxazole being most favorable. differences in sensitivity could be established between strains from inpatient and outpatient material. resistance r ... | 1976 | 817195 |
| [comparison of the esterases of providencia alcalifadiens and providencia stuartii]. | 1975 | 808353 | |
| comparison of the in vitro activities of bb-k8 and three other aminoglycosides against 215 strains of pseudomonas and enterobacteriaceae with variable sensitivity to kanamycin and gentamicin. | 215 gram-negative bacilli isolated from clinical materials were tested in vitro against bb-k8 by means of disc diffusion and agar dilution tests; the strains included 40 isolates resistant to gentamicin. approximately 90% of the strains were inhibited by 3.12 mug/ml or less bb-k8. this antibiotic exhibited a comparable activity, although somewhat inferior, to that of gentamicin, against organisms sensitive to gentamicin. it was considrably more active than gentamicin, and comparable to tobramyci ... | 1975 | 807457 |
| comparative activity of tobramycin and gentamicin against pseudomonas, proteus and providencia species. | tobramycin is a new antibiotic resembling gentamicin. we measured the minimal inhibitory concentrations of these two antibiotics against five bacterial species that cause hospital-acquired infections and are resistant to many presently available antibiotics. the organisms tested were 500 strains of pseudomones aeruginosa, 100 strains of each of proteus rettgeri and pr. morganii, 50 strains of pr. vulgaris and 250 strains of providencia stuartii. tobramycin was 2 to 4 times more active than genta ... | 1975 | 807310 |
| comparison of amikacin and gentamicin. | the sensitivity to gentamicin (g) and to amikacin (a) of 25 strains of escherichia coli (ec), 25 klebsiella sp. (k), 25 proteus and providence sp. (pp), and 25 ps. aeruginosa (pa) were tested in vitro by the disc method, by the inocula-replicating method, and by a tube dilution technique using 10-5 microorganisms/ml. bactericidal concentrations active on 50% and 90% of the strains were 1.5 and 4.5 mug/ml for ec, 3 and mug/ml for k, 1.5 and 3 mug/ml for pp, and 3 and 3 mug/ml for pa. resistance t ... | 1975 | 804370 |
| use of tergitol-7 agar in the clinical laboratory. | tergitol-7 agar has been utilized in the author's laboratory for eight years and has been found the superior medium for the rapid isolation, separation and identification of gram negative bacilli found in a clinical setting. | 1975 | 803348 |
| pathological and microbiological observations made on spontaneous cases of acute neonatal calf diarrhea. | the purpose of this report is to describe clinical signs, gross and microscopic lesions, bacteriological and immunofluorescence observations made on spontaneous cases of acute neonatal calf diarrhea (ncd) in dairy and beef herds. the following diagnostic tools were used: 1) direct smears of intestinal content, 2) escherichia coli counts, 3) aerobic bacterial cultures of the small intestine and other organs (the o serogroup and the enterotoxigenicity of the e. coli isolated was determined), 4) de ... | 1976 | 793692 |
| a rapid glutamic decarboxylase test for identification of bacteria. | a simple rapid glutamic decarboxylase test is described. this test was found useful in the identification of escherichia coli, shigella sp., providencia alcalifaciens, clostridium perfringens and bacteroides fragilis. | 1976 | 793504 |
| in vitro synergistic effect of netilmicin, a new aminoglycoside antibiotic. | the combination of netilmicin (sch 20569) with carbenicillin, cefazolin, chloramphenicol, and clindamycin was evaluated by in vitro tests against 91 clinical isolates of pseudomonas, klebsiella, and escherichia coli. combinations were considered to show synergy if there was a fourfold or greater reduction in minimal inhibitory concentration values of both antibiotics when combined. synergy of netilmicin with carbenicillin could be demonstrated against 21 of 46 pseudomonas isolates. comparison of ... | 1976 | 791104 |
| variation in urease activity of endemic hospital strains of proteus rettgeri and providencia stuartii. | both urease-positive and urease-negative proteeae isolated from cross-infected patients in the same hospitals and, in three cases, from the same patients were examined for their biochemical reactions and somatic (o-) antigens. all isolates gave the same reactions in 17 biochemical tests and possessed o-antigens characteristic of providenic o-type strains 4 or 17. study of the isolates indicated that endemic strains are capable of undergoing variation in urease activity. in the current classifica ... | 1976 | 789790 |