TitleAbstractYear(sorted ascending)
streptococcus equinus. 193716559995
nutrition of streptococcus bovis. 194816561497
amino acid interrelationships in the nutrition of streptococcus bovis. 194816561520
amino acid interrelationships in the nutrition of streptococcus bovis. 194818863605
serological position of streptococcus bovis. 194818904452
nutrition of streptococcus bovis. 194818915643
the streptococci of group d; the serological grouping of streptococcus bovis and observations on serologically refractory group d strains. 194918126510
the folic acid and serine nutrition of leuconostoc mesenteroides p60 (streptococcus equinus p60). 195413152338
effects of carbon dioxide on the growth and amino acid metabolism of streptococcus bovis. 195513263287
the effect of carbon dioxide on polysaccharide production by streptococcus bovis. 195613366900
effects of carbon dioxide on the growth of streptococcus bovis in the presence of various amino acids. 195713405875
production of hemolytic zones on blood agar by certain strains of streptococcus bovis under increased co2 tension. 195713416185
prerequisites for dextran production by streptococcus bovis. 195813566233
a quantitative study of the production of dextran from sucrose by rumen strains of streptococcus bovis. 195813575761
the nutritional requirements of rumen strains of streptococcus bovis considered in relation to dextran synthesis from sucrose. 195813611204
transglucosidase activity of rumen strains of streptococcus bovis; structure of the dextran produced from sucrose. 195913628526
transglucosidase activity of rumen strains of streptococcus bovis. 2. isolation and properties of dextransucrase. 195913651133
the nature of the capsular polysaccharides of the dextran-producing organisms leuconostoc mesenteroides, l. dextranicum and streptococcus bovis. 195913654720
ammonium salts as a sole source of nitrogen for the growth of streptococcus bovis. 195913672923
formation of leucrose in dextran-producing cultures of streptococcus bovis. 195913795857
influence of nitrogen source on growth of streptococcus bovis. 195914434753
the metabolism of carbon dioxide by streptococcus bovis. 196013846063
nutrition of streptococcus bovis in relation to dextran formation.barnes, isabel j. (cornell university, ithaca, n. y.), h. w. seeley, and p. j. vandemark. nutrition of streptococcus bovis in relation to dextran formation. j. bacteriol. 82:85-93. 1961.-three nutritional types of streptococcus bovis were encountered. minimal media for their growth are described. transferable growth in defined media was always accompanied by dextran production and the nutrition for dextran production could not be distinguished from the minimal nutritional requirements of the org ...196113687103
utilization of sulfur compounds by streptococcus bovis.prescott, j. m. (a. &. m. college of texas, college station). utilization of sulfur compounds by streptococcus bovis. j. bacteriol. 82:724-728. 1961.-two strains of streptococcus bovis utilize a variety of compounds as their only source of sulfur, yet exert a definite selectivity in their nutritional requirements for this element. among sulfur-containing amino acids and related compounds, cystine and cysteine support excellent growth, but cysteic acid and cysteine sulfinic acid do not; methionin ...196114488628
oligosaccharides in dextran-producing cultures of streptococcus bovis. 196116748906
the serological grouping of streptococcus equinus. 196213989375
starch hydrolysis by strepto-coccus equinus.dunican, lawrence k. (cornell university, ithaca, n. y.) and harry w. seeley. starch hydrolysis by streptococcus equinus. j. bacteriol. 82:264-269. 1962.-in a study of starch hydrolysis by strains of streptococcus equinus, 52 isolates were obtained and their amylolytic abilities determined. it was found that all the strains could hydrolyze starch to some extent when grown in the presence of an easily fermentable carbohydrate, viz., glucose. without this carbohydrate the organisms did not hydroly ...196213888473
species differentiation of group d streptococci.three hundred and fourteen strains of group d streptococci were studied by means of a number of tests. the majority of the strains were identified as streptococcus faecalis (83 strains), streptococcus faecium (131 strains), or streptococcus bovis (32 strains). several strains (47 or nearly 15%) either shared characteristics of two species or were completely atypical. s. faecalis and s. bovis were more easily identified than s. faecium, which is not sharply defined from the other species and coul ...196214483707
the serological grouping of three strains of streptococcus equinus. 196313960231
the intracellular alpha-galactodidase of a rumen strain of streptococcus bovis. 196313969023
temperature-sensitive dextransucrase synthesis by a lactobacillus.dunican, l. k. (cornell university, ithaca, new york), and h. w. seeley, jr. temperature-sensitive dextransucrase synthesis by a lactobacillus. j. bacteriol. 86:1079-1083. 1963.-dextran synthesis was found to be temperature-dependent in lactobacillus strain rwm-13. dextran was not formed above 37 c, although growth of cells occurred up to 42 c. logarithmically growing cells transferred from 30 c to 40 c ceased producing dextran while growth decreased nominally. an examination of the extracts of ...196314080775
microbiological assay for l-asparagine with a streptococcus bovis mutant. 196414153302
[studies on the growth and propagation of streptococcus bovis during continuous roentgen irradiation]. 196414176849
fructose-1,6-diphosphate requirement of streptococcal lactic dehydrogenases.the lactic dehydrogenase of a strain of streptococcus bovis specifically requires fructose-1,6-diphosphate for activity. phosphate or fructose-1-6-diphosphate prevents inactivation of the dehydrogenase, but phosphate and other compounds cannot be substituted for the fructose-1,6-diphosphate required for activity. lactic dehydrogenases of other species of streptococcus show a similar requirement for fructose-1,6-diphosphate.196414197565
purification and properties of the asparagine synthetase of streptococcus bovis. 196414213353
amino group formation and glutamate synthesis in streptococcus bovis.burchall, j. j. (university of illinois, urbana), r. a. niederman, and m. j. wolin. amino group formation and glutamate synthesis in streptococcus bovis. j. bacteriol. 88:1038-1044. 1964.-extracts of streptococcus bovis grown on nh(4) (+) as a nitrogen source contain a nicotinamide adenine dinucleotide phosphate (nadp)-linked glutamic dehydrogenase and are devoid of alanine dehydrogenase, other amino acid dehydrohygenases, and aspartase. a potential source of reduced nicotinamide adenine dinucle ...196414219016
normal intestinal flora of cattle fed high-roughage rations.maki, leroy r. (university of wyoming, laramie), and kay picard. normal intestinal flora of cattle fed high-roughage rations. j. bacteriol. 89:1244-1249. 1965.-intestinal bacteria were isolated from 15 cattle. approximately 600 isolates were studied, and their presence and numbers in the duodenum, ileum, cecum, and colon were noted. bacteria most frequently isolated from all parts of the intestinal tract included escherichia coli, streptococcus bovis, and species of bacillus. several groups of g ...196514292993
the cell-bound alpha-amylases of streptococcus bovis.1. the cell-bound alpha-amylase of streptococcus bovis has been isolated from other carbohydrases in the cell extract by chromatography on deae-cellulose. the enzyme has been compared with the extracellular alpha-amylase produced by this organism. 2. the two amylases had similar action patterns on amylose, the main product being maltotriose with smaller amounts of maltose and a little glucose. 3. the cell-bound amylase hydrolysed maltopentaose and maltohexaose at a similar rate to the hydrolysis ...196514346085
a transglucosylase of streptococcus bovis.1. a transglucosylase has been separated from the alpha-amylase of streptococcus bovis by chromatography of the cell extract on deae-cellulose. 2. the transglucosylase can synthesize higher maltodextrins from maltotriose, but maltose, isomaltose and panose do not function as donors. 3. iodine-staining polysaccharide may be synthesized from maltotriose provided that glucose is removed. synthesis from maltohexaose results in dextrins of sufficient chain length to stain with iodine, but again malto ...196514346086
utilization of co2 and acetate in amino acid synthesis by streptococcus bovis. 19655836014
[contribution to the antigenic study of the lancefield group d streptococci. group antigens and antigens of the streptococcus equinus type]. 19665924739
[on the influence of different nutrient media on the activity of several enzymes in streptococcus bovis 2281]. 19664230687
enzymatic studies of pure cultures of rumen microorganisms.joyner, a. e., jr. (university of california, davis), and r. l. baldwin. enzymatic studies of pure cultures of rumen microorganisms. j. bacteriol. 92:1321-1330. 1966.-the activities of enzymes representing the major pathways of carbohydrate metabolism and anaerobic electron transport in cell-free extracts of whole rumen contents have been reported. the effects of diet upon the activities of several enzymes suggested that enzymatic measurements might prove useful for the study of rumen metabolism ...19664380801
arginine biosynthesis by streptococcus bovis.the pathway of arginine biosynthesis in streptococcus bovis was studied by radioactive tracer techniques. cells were grown anaerobically with (14)co(2) in a synthetic medium containing nh(4) (+) as the sole nitrogen source except for the trace present in nitrogen-containing vitamins. the protein fraction isolated from the labeled cells was acid-hydrolyzed, and (14)c-arginine was isolated from the protein hydrolysate by ion-exchange chromatography. the carboxyl carbon of the isolated arginine was ...19676051338
the presence of dextran-forming bacteria, resembling streptococcus bovis and streptococcus anguis, in human dental plaque. 19675233940
lysis of viable rumen bacteria in bovine rumen fluid.streptococcus bovis and butyrivibrio sp. were labeled with thymidine-methyl-(3)h, washed, and resuspended in rumen fluid or rumen fluid fractions obtained from holstein and jersey cows fed alfalfa hay once daily. factors affecting the lytic activity found in untreated rumen fluid were examined. day to day variation and differences before and after feeding were observed for the same cow. there were also differences between cows on the same day. for a given rumen fluid, the rate of release of labe ...19685659364
antibiotic susceptibility of anaerobic ruminal bacteria.this study demonstrated that 15 species of ruminal bacteria with no previous history of contact with antibiotics are susceptible to bacitracin, chloramphenicol, chlortetracycline, erythromycin, novobiocin, oleandomycin, oxytetracycline, penicillin, tetracycline, tylosin, and vancomycin. a number of the species were not inhibited by kanamycin, neomycin, polymyxin, and streptomycin. the data suggest that antibiotic-resistant cells occur within susceptible cultures of these species. streptococcus b ...19685689514
protein--carbohydrate interaction. xvi. the interaction of concanavalin a with dextrans from l. mesenteroides b-512-f, l. mesenteroides 9birmingham), streptococcus bovis, and a synthetic alpha-(1--6)-d-glucan. 19685698021
immunochemical analysis of streptococcus bovis, strain s 19, cell walls. 19695792673
chemical studies on the structure of mucopeptide isolated from streptococcus bovis.mucopeptides isolated from streptococcus bovis cell walls were found to be composed of alanine, glutamic acid, lysine, and threonine in a mole ratio of 3:1:1:1. a dipeptide, n(epsilon)-lysylthreonine, was isolated from s. bovis mucopeptide by ion-exchange chromatography. this finding suggests that threonine is associated with the bridge which cross-links adjacent tetrapeptides by connecting the epsilon-amino group of lysine of one tetrapeptide to the carboxyl group of d-alanine of another to for ...19695802603
immunochemical studies on the cross-reactivity between streptococcus bovis, strain s19, and group a streptococcal carbohydrates. 19694976669
sugar fermentation characteristics, antibiotic sensitivity and fatty acid composition of streptococcus bovis. 19695394202
immunochemistry of capsular glucans isolated from streptococcus bovis. 19715543700
comparison of selective media for isolation of presumptive group d streptococci from human selective enterococcus (pse) agar, a medium containing bile, sodium azide, and esculin, was evaluated for its sensitivity and selectivity for detection and enumeration of presumptive group d streptococci in human feces. sf broth and sf broth plus agar (1.5%), representing selective media in common use, were studied simultaneously. presumptive group d streptococci were recovered on pse agar from the feces of all 25 subjects. no growth was observed in 8% of specimens in sf broth. no gram-ne ...19714944799
extracellular transglucosylase and alpha-amylase of streptococcus equinus.culture filtrates of streptococcus equinus 1091 contained alpha-amylase and transglucosylase. the effects of calcium carbonate, age of inoculum, concentration of maltose, and duration of the fermentation on alpha-amylase and transglucosylase production were determined. the extracellular alpha-amylase was purified 48-fold and was free of transglucosylase activity. the alpha-amylase (amylose substrate) required cl(-) for maximum activity; ethylenediaminetetraacetic acid (edta) partially inhibited ...19714995651
glycans from streptococcal cell walls: structural features of a diheteroglycan isolated from the cell wall of streptococcus bovis. 19724112919
glycans from streptococcal cell walls: an antigenic triheteroglycan of 6-deoxy-l-talose, l-rhamnose and d-galactose from streptococcus bovis. 19724114574
incorporation of adenine and uracil into the nucleic acids of streptococcus bovis. 19734736195
group d streptococcal bacteremia, with emphasis on the incidence and presentation of infectious due to streptococcus bovis. 19734753940
studies on mannitol-fermenting strains of streptococcus bovis. 19734517040
the lysozyme sensitivity of streptococcus equinus. 19734589869
comparative survival of indicator bacteria and enteric pathogens in well water.the comparative survival of various fecal indicator bacteria and enteric pathogens was studied in a stable well water supply by using membrane chambers. there was more variation in the 29 coliform cultures and they died more rapidly, as a group, than the 20 enterococcus cultures that were examined. the comparative survival of the organisms tested follows: aeromonas sp. > the shigellae (shigella flexneri, s. sonnei, and s. dysenteriae) > fecal streptococci > coliforms = some salmonellae (salmonel ...19744598219
streptococcus bovis endocarditis. 19744812081
[lysogeny among cultures of streptococcus bovis isolated from the rumina of cattle and sheep]. 19744828756
antibiotic susceptibility of streptococcus bovis and other group d streptococci causing endocarditis.seventy-four strains of streptococcus bovis and 35 strains of enterococci (streptococcus faecalis and its varieties, streptococcus faecium and streptococcus durans), most of which were isolated from patients with endocarditis, were tested for their susceptibility to penicillin, ampicillin, erythromycin, cephalothin, vancomycin, methicillin, tetracycline, chloramphenicol, kanamycin, streptomycin, and gentamicin. minimal inhibitory concentrations (mic) and minimal bactericidal concentrations (mbc) ...19744840433
endocarditis due to group d streptococci. comparison of disease caused by streptococcus bovis with that produced by the enterococci. 19744843895
streptococcus bovis endocarditis.a case is described of bacterial endocarditis caused by lancefield group d streptococcus bovis. because of its sensitivity to the less toxic antibiotics such as penicillin, the importance of laboratory differentiation from the more resistant enterococci is emphasized. treatment in this case was complicated by penicillin allergy and cardiac failure. the condition finally responded to clindamycin therapy and aortic valve replacement.19744415908
nonenterococcal group-d streptococcal endocarditis caused by streptococcus bovis. 19744422602
evaluation of selective media for enumeration of group d streptococci in bovine feces.eight commercially available selective media were evaluated by the membrane filter technique. enterococcosel broth (bbl) consistently gave the best recovery of group d streptococci, particularly of streptococcus bovis.19744451370
[kinetics of setting up of a human fecal flora in germ free mice and trial of decontamination of antibiotherapy (author's transl)].we have tried in this study to reproduce in germfree mice a bacterial equilibrium observed previously in the gastrointestinal tract of child "l.n.", reared in a plastic isolator. eight bacterial strains were studied. seven had been fortuitously introduced: acinetobacter lwoffi ln1, staphylococcus epidermidis ln2, clostridium perfringens ln3, plectridium anatum ln4, streptococcus bovis ln5, enterobacter cloacae ln6, corynebacterium sp ln7. the eighth strain was purposely administered to the child ...1975174472
glucose-6-phosphate-dependent pyruvate kinase in streptococcus mutans.pyruvate kinase of streptococcus mutans jc 2 had an absolute and specific requirement for glucose-6-phosphate. inorganic phosphate was a strong inhibitor. the enzyme required k+ or nh4+ and mg2+ or mn2+. s. mutans fil and e 49, streptococcus bovis atcc 9809, and streptococcus salivarius atcc 13419 had also glucose-6-phosphate-dependent pyruvate kinases, whereas streptococcus sanguis nctc 10904 had an enzyme activated by fructose-1,6-diphosphate.1975240810
meningitis caused by streptococcus in adults.meningitis caused by streptococcus is uncommon in adults. otitis media, mastoiditis, sinusitis, or trauma has antedated most cases reported in the past. data on 10 recent cases suggest changes in the current pathogenesis of streptococcal meningitis in adults and emphasize the importance of accurate streptococcal speciation. endocarditis was present in five cases; trauma played a role in two others. brain abscess, corticosteroids, alcoholic cirrhosis, and peritonitis secondary to chronic peritone ...19751092775
susceptibility of various serogroups of streptococci to clindamycin and lincomycin.the minimal inhibitory concentration of lincomycin and clindamycin for a large number of strains from multiple serogroups of streptococci was determined. the median minimal inhibitory concentration for streptococci from groups a, b, c, f, g, h, l, and m and nongroupable organisms ranged from 0.02 to 0.39 mug of lincomycin per ml and from </=0.01 to 0.09 mug of clindamycin per ml. among the group d strains, streptococcus faecium and streptococcus faecalis were resistant to lincomycin and clindamy ...19751137367
isolation and identification of rumen bacteria capable of anaerobic phloroglucinol degradation.eight strains of rumen bacteria capable of degrading phloroglucinol (1,3,5-trihydroxybenzene) under anaerobic conditions were isolated from enrichment cultures of the bovine rumen microflora established in a prereduced medium containing 0.02 m phloroglucinol. five of the strains were facultatively anaerobic gram-positive streptococci which were identified as streptococcus bovis. three strains of obligately anaerobic gram-positive cocci were assigned to the genus coprococcus. anaerobic cultures o ...19751170929
regulation of lactate dehydrogenase and change of fermentation products in streptococci.streptococcus mutans jc 2 produced mainly lactate as a fermentation product when grown in nitrogen-limited continuous culture in the presence of an excess of glucose and produced formate, acetate, and ethanol, but no lactate, under glucose-limited conditions. the levels of lactate dehydrogenase (ldh) in these cultures were of the same order of magnitude, and the activity of ldh was completely dependent on fructose-1,6-diphosphate (fdp). the intracellular level of fdp was high and the level of ph ...19751176435
presumptive speciation of streptococcus bovis and other group d streptococci from human sources by using arginine and pyruvate tests.a simplified method for speciation of group d streptococci is described. a total of 4,156 streptococcal isolates from human clinical material was tested for ability to hydrolyze esculin in the presence of 40% bile, ferment pyruvate, hydrolyze arginine, and grow in media containing 40% bile or 6.5% nacl. streptococci which hydrolyzed esculin in 40% bile, but which did not hydrolyze arginine, were also tested for their ability to ferment raffinose or sorbose. sixty percent (2,503) of the isolates ...19751176592
frothy feedlot bloat in cattle: production of extracellular polysaccharides and development of viscosity in cultures of streptococcus bovis.streptococcus bovis was cultured in a synthetic medium with three concentrations of sucrose. initial viscosity of the media was 1.5 centipoise (cp). after incubation for 8 h, the viscosity of the medium with 0.5% sucrose was unchanged, that with 3% sucrose had increased to 8 cp, and that with 6% sucrose to 112 cp. similar results were found with a rumen fluid medium. a slimy material, responsible for increased viscosity of these cultures, was digested by dextranase. the material appeared as a co ...19761260538
growth and morphology of streptococcus bovis and of mixed rumen bacteria in the presence of aflatoxin b1, in vitro.the metabolism of aflatoxin b1 to other fluorescent compounds was studied in rumen organisms. no fluorescent metabolites were found by chromatographic procedures which separate aflatoxin b1 from them. rumen bacteria (mixtures and streptococcus bovis) incubated with aflatoxin b1 grew in long chains whereas cells in control cultures were mainly doublets with some short chains. growth of mixed rumen bacteria and streptococcus bovis cultures was inhibited by aflatoxin b1 as measured by change in opt ...19761262566
lysogeny in streptococcus bovis.forty-eight strains of streptococcus bovis were tested for induction with mitomycin c. eleven inducible strains were found and the lysates of all 11 contained bacteriophage-like particles. the lysate of one strain also contained large numbers of particles which closely resembled polyheads. eight of the lysates produced zones of inhibition on indicator strains and viable bacteriophages were detected in six lysates. the sources of the s. bovis were ovine and bovine rumen fluid (23 strains), ovine ...1976945121
bacteriocins of streptococcus bovis.forty-seven strains of streptococcus bovis were tested for bacteriocin production. fourteen were found to produce bacteriocins, while all 47 were sensitive to at least one of these bacteriocins. the bacteriocins, on the basis of their host range on s. bovis strains, formed six groups. a representative of each group was selected and characterized by temperature stability, sensitivity to trypsin and lipase, sedimentation by centrifugation, ability to pass through dialysis tubing, host range on oth ...1976963612
glycans from streptococcal cell walls. the molecular structure and immunological properties of an antigenic glycan from streptococcus bovis. 1976970959
use of mueller-hinton agar as amylase testing medium.readily available mueller-hinton agar was used to detect starch hydrolysis by streptococcus bovis.1976972196
[biological properties of streptococcus bovis bacteriophages isolated from lysogenic cultures and sheep rumen].biological characteristics of eleven phages for streptococcus bovis were investigated; seven phage were isolated from ovine rumen and four were virulent mutants of temperate phages of lysogenic cultures. the phages had many properties in common: similar morphology of negative colonies, the identical spectrum of lytic action, related antigens, absolute or high requirement of calcium ions, thermolability, and inactivation by the content of the rumen. their susceptibility to the inactivating action ...1976979689
streptococci isolated from bovine intramammary infections.streptococcal isolates from 71 dairy herds considered free of streptococcus agalactiae were compared with isolates from 1 herd used in bovine mastitis research over a 12-year period. the incidence of streptococci was as follows: streptococcus uberis, 56.5%; enterococci, 24.2%; streptococcus dysgalactiae, 9.0%; streptococcus bovis, 5.1%; unclassified streptococci, 3.1%; streptococcus agalactiae, 1.5%; and lancefield group g streptococci, 0.7%. the incidence for these streptococci in the 2 groups ...1976817626
effects of subinhibitory concentrations of antibiotics on cross walls of cocci.cultures of staphylococcus aureus, neisseria gonorrhoeae, and streptococcus bovis were incubated on membrane filters on agar containing antibiotics at one-third to one-fourth the minimal inhibitory concentration for the particular bacterial strain. s. aureus was grown in the presence of oxacillin, cephaloridine, or lincomycin. n. gonorrhoeae and s. bovis were grown in the presence of penicillin. the membranes were then incubated in drug-free agar, after which viability was determined and the cel ...1976820243
characterization of streptococcus bovis bacteriophages.about 25 streptococcus bovis bacteriophages were isolated from abattoir wastes, bovine rumen fluid, and lysogenic strains of s. bovis. eight phages were selected and characterized by morphology, stability, rate of adsorption, single-step growth curve, serum neutralization, and antigenic relationship. two distinct morphological phage types were found, one of which has not been previously reported for group d streptococci.197658706
succession of streptococcus bovis strains with differing bacteriophage sensitivities in the rumens of two fistulated sheep.the bacteriophage sensitivity of the streptococcus bovis population resident in the rumens of two fistulated sheep was monitored for 112 days. during this time, three changes in the bacteriophage sensitivity of s. bovis occurred in the absence of detectable bacteriophages. identical changes in bacteriophage sensitivity occurred simultaneously in both animals and, except for the relatively short periods of changeover in phage sensitivity, the s. bovis population in the rumens of the two sheep was ...1977326185
association of streptococcus bovis with carcinoma of the colon.two patients with colonic adenocarcinoma and streptococcus bovis endocarditis suggested a possible association between the two. non-enterococcal group d streptococci were isolated from fecal cultures of 11 of 105 controls, 35 of 63 patients with carcinoma of the colon, seven of 25 with inflammatory bowel disease, four of 21 with non-colonic neoplasms and five of 37 with other gastrointestinal disorders. all such streptococci examined for lactose fermentation were s. bovis. the prevalence of s. b ...1977408687
isolation of streptococcus equinus from non-respiratory sources in children.streptococcus equinus, a non-enterococcal streptococcus, was isolated with increased frequency in a pediatric population.1977410829
glucose-1-phosphate as a selective substrate for enumeration of bacteroides species in the rumen.when glucose-1-phosphate was used as the only added energy source in a selective roll tube medium, colony counts for rumen contents ranged from 17.8 to 84.8% of the total culturable count. percentages were highest in rumen contents from sheep fed high-concentrate rations. from a total of 73 cultures isolated from glucose-1-phosphate roll rubes, only 15.1% were presumptively identified as bacteroides species. strains presumptively identified as butyrivibrio, selenomonas, treponema, streptococcus ...1977869544
vancomycin.vancomycin, a useful bactericidal antibiotic for selective clinical infections, is the therapy of choice for serious staphylococcal infections when the penicillins and cephalosporins cannot be used. the antibacterial spectrum of vancomycin also covers other gram-positive cocci and bacteria and gram-negative cocci. vancomycin is given intravenously in most cases, usually in a dose of 1 g every 12 hours in patients who have normal renal function. the indications for vancomycin therapy are as follo ...1977909314
streptococcus bovis endocarditis with carcinoma of the colon. 1977917098
teichoic acids of group d streptococci with special reference to strains from pig meningitis (streptococcus suis).immunoelectrophoresis revealed in phenol extracts from s. faecalis and s. faecium a mixture of free and lipid-bound teichoic acids, both reactive with group d antisera. in phenol extracts from s. suis only lipid-bound teichoic acid, also reactive with group d antiserum, was seen. this difference probably accounts for the low yield of group d antigen from s. suis as compared with s. faecalis and s. faecium when heating at ph 2 is used for extraction. when phenol is used good yields are obtained f ...197745589
the redox potential of growing cultures of streptococcus bovis orla-jensen compared with other facultative anaerobes. 197833547
infective endocarditis caused by streptococcus bovis resistant to the lethal effect of penicillin g.penicillin g alone is generally recommended for the treatment of infective endocarditis caused by streptococcus bovis because clinical isolates of s bovis are represented as being uniformly and markedly susceptible to penicillin g. however, two strains of s bovis recovered from two patients with bacterial endocarditis were resistant to the lethal effect of penicillin g. combination therapy, cefazolin sodium and gentamicin sulfate in patient 1 and penicillin g and gentamicin in patient 2, was nec ...1978246729
effects of heavy metals and other trace elements on the fermentative activity of the rumen microflora and growth of functionally important rumen bacteria.the inhibitory effects of high concentrations of essential and non-essential trace elements were tested on the rumen microflora using the rate of fermentation in vitro as the assay. the elements (and the concentration causing 50% inhibition) in decreasing order of toxicity were hg2+ (20 microgram/ml), cu2+ (21 microgram/ml), cr6+ (70 microgram/ml), se4+ (73 microgram/ml), ni2+ (160 microgram/ml), cd2+ (175 microgram/ml), as3+ (304 microgram/ml) and as5+ (1610 microgram/ml). the elements tested t ...1978565671
production of branched-chain volatile fatty acids by certain anaerobic production of isobutyric acid, isovaleric acid, and 2-methylbutyric acid by cultures of bacteroides ruminicola and megasphaera elsdenii on media that contained trypticase or casein hydrolysate continued (up to 5 days) after growth had ceased. only trace quantities of these acids were produced in a medium that contained a mixture of amino acids that did not include the branched-chain amino acids. m. elsdenii produced increased quantities of the branched-chain fatty acids in a medium that cont ...1978566082
determination of the sugar sequences and the glycosidic-bond arrangements of immunogenic heteroglycans.the complete sugar sequences and glycosidic-bond arrangements have been determined by a combined analytical scheme for a diheteroglycan of d-glucose and d-galactose and a tetraheteroglycan of 6-deoxy-l-talose, l-rhamnose, d-galactose, and d-glucuronic acid. the analytical scheme included methylation analysis by g.l.c. and mass spectrometry, periodate oxidation followed by borohydride reduction and identification of the residual fragments, enzymic hydrolysis followed by characterization of the mo ...1978620418
more on streptococcus bovis endocarditis and bowel carcinoma. 1978625315
streptococcus bovis bacteremia and underlying gastrointestinal disease.twenty-six adults with streptococcus bovis endocarditis and ten with bacteremia alone were studied to determine possible portals of entry. of 36 patients (17 with endocarditis, eight with bacteremia alone), 25 had gastrointestinal lesions or manipulation. in 22, the gastrointestinal tract appeared to be the source of s bovis bacteremia. four patients had either carcinoma of the colon (two) or potentially malignant villous adenomas (two) when first seen because of s bovis bacteremia. none of thes ...1978666468
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