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streptococcus bovis endocarditis with carcinoma of the colon. 1978709292
[the association of a digestive carcinoma and subacute endocarditis. 4 cases (author's transl)].attention has recently been drawn to the association of digestive carcinoma and streptococcus bovis endocarditis. the authors studied 130 records of patients with endocarditis and an association with a digestive tumour (3 neoplasms, one villous tumour) was found in four. streptococcus bovis was demonstrated in one case, streptococcus faecalis in two and streptococcus durans in one. the association of carcinoma and subacute endocarditis would thus seem to not solely relate to digestive commensual ...1978714665
streptococcus bovis and colonic lesions. 1978717979
fulminant neonatal septicemia caused by streptococcus bovis. 1978413898
gentamicin-based medium for the isolation of group d streptococci and application of the medium to water analysis.gentamicin-thallous-carbonate (gtc) medium contained (per liter): 40.0 g of trypticase soy agar, 5.0 g of kh(2)po(4), 2.0 g of nahco(2), 1.0 g of glucose, 1.0 g of esculin, 0.5 g of thallous acetate (ta), 0.5 g of ferric citrate, 0.75 ml of tween 80, and 2.5 mg of gentamicin sulfate. the nahco(3) (20 ml of a 10% solution that had been heated to boiling) was added after sterilization of the basal medium. the spread plate technique was used to compare gtc agar with pfizer selective enterococcus, t ...1978416754
streptococcus bovis endocarditis and colonic cancer. 197876763
streptococcus bovis septicemia as a clue to colon neoplasms in two cases. 1978101050
treatment of bacterial endocarditis with vancomycin.five patients with bacterial endocarditis who were allergic to penicillin were treated successfully with vancomycin. the causative microorganisms were streptococcus bovis, s faecalis, s agalactiae, s intermedius, and staphylococcus aureus. except for the strain of s faecalis, vancomycin was bactericidal against these organisms at easily achievable serum concentrations. to insure a bactericidal serum titer of 1:8 or greater, streptomycin was added in the therapy of the case caused by s faecalis. ...1978104623
effect of serum on gram-positive cocci grown in the presence of penicillin.strains of staphylococcus aureus, streptococcus faecalis, streptococcus bovis, and a strain of streptococcus that produces filaments were grown on agar containing penicillin at concentrations of one-half to 1/10th the minimal inhibitory concentration. these penicillin-exposed organisms as well as untreated control organisms were incubated with human serum of plasma. both serum and plasma produced a remarkable bactericidal effect on the filament-forming streptococcus grown in the presence of peni ...1978105057
incidence and relationship of group d streptococci with other indicator organisms in meats.raw and processed meats were analyzed for presumptive group d streptococci using kf streptococcus agar. counts were compared with coliform, presumptive escherichia coli, and enterobacteriaceae counts but no meaningful relationships were observed. results indicated that group d streptococci and e. coli type i were principally contaminants from the packing plant, rather than at retail level. the predominating group d streptococcus in both beef and pork cuts was streptococcus faecalis, while in pro ...1978106944
carriage of group d streptococci in the human bowel.sixty faecal samples, 39 from adults and 21 from neonates, were investigated by means of a simple scheme to isolate and identify any group d streptococci present. a number of differences were found between the two groups. group d streptococci were absent from 43% of the neonates compared with only 13% of the adults; streptococcus bovis was commoner in the neonates (23.8%) than in the adults (5%), and streptococcus faecium was not isolated from any of the infant samples although it was common in ...1978107199
generation rates of faecal streptococci in various vehicles.potassium tellurite media gave the highest detrimental effects on the generation number of all tested faecal streptococci species. this applies to all investigated vehicles. however, drastic tellurite effects became more conspicuous with certain vehicles than with others. this is particularly true with acid and alkaline foods and water, especially with strains like streptococcus bovis, str. faecium, and str. durans. again, tellurite becomes more influencial with regard to old cells rather than y ...1978107679
bacteriological quality of runoff water from pastureland.runoff from a cow-calf pasture in eastern nebraska was monitored for total coliforms (tc), fecal coliforms (fc), and fecal streptococci (fs) during 1976, 1977, and 1978. bacteriological counts in runoff from both grazed and ungrazed areas generally exceeded recommended water quality standards. the fc group was the best indicator group of the impact of grazing. rainfall runoff from the grazed area contained 5 to 10 times more fc than runoff from the fenced, ungrazed area. there was little differe ...1979114112
detection of group d and viridans streptococci in blood by radiometric methods.a prospective study was conducted to evaluate the radiometric detection of group d and viridans streptococci in blood, using three media preparations, bactec 6a and 6b isotonic media and 8b hypertonic medium. all enterococci tested were detected by the 6a and 6b media. however, the 6a medium failed to detect 76% of the streptococcus bovis isolates and 57% of the viridans streptococci, whereas all s. bovis isolates and 95% of the viridans streptococci were detected with the 6b formulation. no imp ...1979429537
serologic studies of streptococcus intermedius, streptococcus constellatus, and streptococcus morbillorum by crossed immunoelectrophoresis.a reference antigen-antibody system for streptococcus intermedius, streptococcus constellatus, and streptococcus morbillorum was established with crossed immunoelectrophoresis. a comparison of s. intermedius, s. constellatus, and s. morbillorum with crossed immunoelectrophoresis and crossed immunoelectrophoresis with intermediate gel indicated that s. intermedius and s. constellatus are closely related antigenically with as many as six common cytoplasmic antigens. s. morbillorum was antigenicall ...1979453098
streptococcus bovis--an approach to its classification and its importance as a cause of bovine mastitis. 1979479054
streptococcus bovis septicemia and carcinoma of the colon.we prospectively studied patients with streptococcus bovis septicemia for the presence of gastrointestinal lesions. this study was prompted by our reported findings of the association of fecal carriage of s. bovis with carcinoma of the colon. we studied 29 patients with 30 episodes of s. bovis septicemia. fifteen completed gastrointestinal evaluations that included colonscopy, surgery, or autopsy. eight of these had carcinoma of the colon, three had adenomatous polyps of the colon without carcin ...1979484953
streptococcus bovis meningitis in a neonate.neonatal infections have been caused by streptococcus bovis, a nonenterococcal group d streptococcus. a recent case of neonatal meningitis caused by this organism prompted a literature review regarding appropriate antibiotic therapy. although most reports suggested penicillin therapy alone for s bovis meningitis, isolates of this organism that were as resistant to the lethal effect of penicillin as the enterococcus have been recovered. therefor, it was recommended that until the results of minim ...1979507006
[clinical significance of streptococcus bovis bacteremia. 5 observations]. 1979525192
comparative in vitro activity of ly 127935 (6059-s), seven cephalosporins, three aminoglycosides, carbenicillin, and ticarcillin.ly 127935 (6059-s), a new semi-synthetic beta-lactam antibiotic was tested simultaneously with 6 cephalosporins, 3 aminoglycosides, carbenicillin and ticarcillin against 398 clinical isolates of gram-negative bacilli and gram-positive cocci. many of the organisms were selected for study because of known resistance to one or more of the clinically available antibiotics tested. escherichia coli, klebsiella, serratia and providencia were susceptible to ly 127935. some resistant strains of enterobac ...1979528361
sensitivity of streptococcus bovis to various antibiotics. 1979528412
evaluation of commercial latex agglutination reagents for grouping streptococci.a total of 155 strains of beta-hemolytic streptococci were serologically grouped by conventional techniques (lancefield extraction and capillary precipitin testing) and by latex agglutination (la). agreement between conventional and la techniques was 97% when the instructions of the manufacturer for the la technique were followed. agreement of 99% was obtained when modified autoclave extracts were used as antigens in the la procedure. a total of 82 strains of non-beta-hemolytic streptococci were ...1979544632
[association of gastric polyposis and subacute endocarditis due to streptococcus bovis]. 1979554088
comparison of substrate affinities among several rumen bacteria: a possible determinant of rumen bacterial competition.five rumen bacteria, selenomonas ruminantium, bacteroides ruminicola, megasphaera elsdenii, streptococcus bovis, and butyrivibrio fibrisolvens were grown in continuous culture. estimates of substrate affinities were derived from lineweaver-burk plots of dilution rate versus substrate concentration. each bacterium was grown on at least four of the six substrates: glucose, maltose, sucrose, cellobiose, xylose, and lactate. wide variations in substrate affinities were seen among the substrates util ...197916345358
comparison of maintenance energy expenditures and growth yields among several rumen bacteria grown on continuous culture.maintenance energy expenditures were mesured for five rumen bacteria, selenomonas ruminantium, butyrivibrio fibrisolvens, bacteroides ruminicola, megasphaera elsdenii, and streptococcus bovis, by using a complex medium with glucose as the carbon source. large differences (as high as 8.5-fold) in maintenance energy expenditures were seen among these bacteria. the suggestion is made that maintenance requirements could be a significant determinant of bacterial competition in the rumen. theoretical ...197916345359
effects of combinations of substrates on maximum growth rates of several rumen bacteria.five rumen bacteria, selenomonas ruminantium, bacteroides ruminicola, megasphaera elsdenii, butyrivibrio fibrisolvens, and streptococcus bovis were grown in media containing nonlimiting concentrations of glucose, sucrose, maltose, cellobiose, xylose and/or lactate. each bacterium was grown with every substrate that it could ferment in every possible two-way combination. only once did a combination of substrates result in a higher maximum growth rate than that observed with either substrate alone ...197916345360
streptococcus bovis endocarditis and colorectal disease. 19806101869
mutagenic activation of an antischistosomal drug by enteric streptococcus sps in vitro and in vivo.previous studies have shown that a new antischistosomal drug, 4-isothiocyano-4'-nitro diphenylamine (cgp 4540, amoscanate), is not mutagenic in vitro, but the urines of animals treated with this drug have mutagenic activity. mutagenicity can be eliminated by coadministration of some antibacterial agents and is not demonstrable in germ-free animals. the present study describes attempts to isolate and identify intestinal microorganisms responsible for the mutagenic activation of amoscanate. strept ...19806119805
comparison of selective media for the enumeration and identification of fecal streptococci from natural sources.five media and procedures were compared for their recovery of fecal streptococci on membrane filters. growth and numbers of a variety of pure cultures were compared, and recoveries from raw sewage and sewage effluent were determined on the five media. a total of 512 isolates were identified and the specificity of each medium was determined from these results. while ke agar recovered significantly higher numbers of organisms, only 81% of the positive colonies were fecal streptococci. slanetz and ...19807011510
infective endocarditis, 1970-1979. a study of culture-positive cases in st. thomas' hospital.ninety-three episodes of culture-positive endocarditis occurred in 88 patients in the years 1970 to 1979. streptococci caused two-thirds of the cases, with streptococcus mitior and streptococcus sanguis most common. among the group d streptococci, streptococcus bovis was much more common than streptococcus faecalis. staphylococci accounted for a quarter of the episodes. streptococcal endocarditis was commonest in the elderly, whereas staphylococcal endocarditis occurred at all ages. degenerative ...19807465764
streptococcus bovis septicemia and pancreatic adenocarcinoma. 19807356254
control of wheat-induced lactic acidosis in sheep by thiopeptin and related antibiotics.thiopeptin, thiopeptin-like antibiotics and penicillin were shown previously to be highly active in vitro against streptococcus bovis, the microorganism believed to be responsible for the initiation of ruminal lactic acidosis. the purpose of this work was to determine the efficacy of these antibiotics in preventing lactic acidosis in lambs challenged by intraruminal administration of ground wheat. lambs, which were fasted and then given ground wheat at 40 g/kg body weight, showed dramatic increa ...19807364689
streptococcus equinus septicemia: report of two cases and review of the literature.two cases of septicemia with streptococcus equinus, a group d streptococcus, are reported, and the literature pertaining to infections with this organism is reviewed. both of our patients presented with obvious signs of infection, had s equinus isolated from multiple blood cultures, and had a good clinical response to penicillin therapy, alone or in combination with streptomycin. in vitro testing of the isolates confirmed susceptibility to penicillin. s equinus should now be recognized as a huma ...19807386522
effect of ph on the efficiency of growth by pure cultures of rumen bacteria in continuous culture.a total of 10 strains of rumen bacteria, selenomonas ruminantium hd4, megasphaera elsdenii b159, butyrivibrio fibrisolvens a38, streptococcus bovis jb1, lactobacillus vitulinus ga1, bacteroides ruminicola b14, b. ruminicola ga33, ruminococcus albus 7, ruminococcus flavefaciens c94, and bacteroides succinogenes s85, were grown in energy-limiteh of the medium reservoir was lowered approximately 0.3 ph units, and the energy source concentration remaining in the culture vessel, optical density, cell ...19807387158
short-term therapy for streptococcal infective endocarditis. combined intramuscular administration of penicillin and streptomycin.in a prospective study, 91 patients with penicillin-sensitive infective endocarditis (ie) were treated for two weeks with intramuscular (im) penicillin g procaine, 1.2 million units every six hours, plus streptomycin sulfate, 500 mg im every 12 hours. viridans streptococci were isolated from 70 patients (77%); 21 patients (23%) had streptococcus bovis infections. eighteen patients (20%) had had symptoms of ie for three months or longer. follow-up ranged from two months to 6.6 years. there were n ...19817452862
a selective medium for the enumeration of streptococcus bovis by membrane filtration. 19817024238
streptococcus bovis endocarditis and colon carcinoma. 19817238020
streptococcus bovis endocarditis and squamous-cell carcinoma of the mouth. 19817242623
polyposis coli presenting with streptococcus bovis endocarditis.streptococcus bovis bacteremia is an important early clue to the presence of serious and clinically unexpected gastrointestinal disease, particularly carcinoma of the colon. s. bovis bacteremia has also been associated with carcinoma of the esophagus and stomach, gastric lymphoma, pancreatic adenocarcinoma, intestinal diverticulosis and single adenomatous polyps and villous polyps of the colon. we report a patient with s. bovis endocarditis as the initial clinical manifestation of extensive poly ...19817258178
streptococcus bovis bacteremia: diagnosis of neoplasms by colonoscopy. 19817268506
effects of lasalocid or monensin on lactate-producing or -using rumen bacteria.lasalocid or monensin inhibited most of the lactate-producing rumen bacteria (butyrivibrio fibrisolvens, eubacterium cellulosolvens, e. ruminantium, lachnospira multiparus, lactobacillus ruminis, l. vitulinus, ruminococcus albus, r. flavefaciens, streptococcus bovis). minimum inhibitory concentrations ranged from .38 to 3.0 micrograms/ml. among the lactate producers, those that produce succinate as a major end product (bacteroides, selenomonas, succinimonas, succinivibrio) were not inhibited by ...19817275867
streptococcus bovis endocarditis presenting as acute vertebral osteomyelitis. 19817306247
degradation of protein by mixed cultures of rumen bacteria: identification of streptococcus bovis as an actively proteolytic rumen bacterium.mixed cultures of rumen bacteria were inoculated into anaerobic buffer solutions containing mixed carbohydrates, casein and ammonia, and rates of bacterial growth, protein degradation, ammonia formation or utilization and lactate production were determined. bacterial growth rate was varied by the provision of excess carbohydrate (one large dose at the onset of the incubation) or limited carbohydrate (small doses every hour or every 2 hr). when carbohydrate was limited, growth rate was slow, the ...19817319939
streptococcus bovis bacteremia following surgical cure of colonic cancer.a patient with adenocarcinoma of the colon developed s. bovis endocarditis 21 months after presumed surgical cure of his cancer. the sequence in all previously published cases is that of bacteremia first, followed by a diagnosis of colon cancer. is there a predetermined genetic or immunologic factor predisposing to s. bovis bacteremia even after the integrity of the mucosal barrier has been restored post-resection?19817331988
vancomycin therapy for infective endocarditis.the use of vancomycin is increasing for the treatment of serious life-threatening staphylococcal and other bacterial infections, including infective endocarditis, in patients who are allergic to the penicillins. the literature through 1978 reveals approximately 55 cases of infective endocarditis treated with vancomycin alone or with combined antibiotic therapy. many of these 55 patients were treated by different clinicians, were given variable regimens of therapy, received other therapy before v ...19817342289
infant with streptococcus bovis meningitis. 19816943355
bacterial food-poisoning versus coliforms-faecal streptococci and gamma radiation survival/dose.all the species tested were sensitive to gamma radiation treatment, even at a dose as low as 0.001 mrad. the spore-former bacillus cereus (pcj 213) proved to be more resistant than the rest of the tested species, while the gram-negative organisms were more susceptible to irradiation treatment. the tolerance among those organisms is depicted by the descending order: proteus vulgaris, irregular vi, escherichia coli i, e. coli iii, and salmonella typhi-murium. yet all the tested faecal streptococci ...19816784377
gentamicin-thallous-carbonate medium for isolation of fecal streptococci from foods.gentamicin-thallous-carbonate (gtc) agar was formulated by donnelly and hartman (appl. environ. microbiol. 35:576-581, 1978) to select for fecal streptococci in sewage and water samples. the present study was conducted to determine the usefulness of gtc agar for the enumeration of fecal streptococci in foods. comparisons were made with kf streptococcal (kf), pfizer selective enterococcus (pse), and thallous acetate (ta) agars. samples of ground beef pork sausage, frozen broccoli, frozen fish, an ...19816784675
streptococcus bovis meningitis and carcinoma of the colon.a 90-year-old woman who presented with streptococcus bovis meningitis was found at autopsy to have a colonic carcinoma. although the association between colonic carcinoma and s. bovis endocarditis or bacteremia is well-documented in the literature, s. bovis meningitis is uncommon. a thorough investigation of the gastrointestinal tract should be undertaken in patients with s. bovis infections even in the absence of gastrointestinal signs or symptoms.19816785508
mannitol agar for microbiologic diagnosis of bovine mastitis.a medium containing mannitol (mannitol agar) was developed and evaluated as a tool for the microbiologic diagnosis of bovine mastitis. mannitol agar supported growth of all important bacterial mastitis pathogens (staphylococci, streptococci, coliforms, and pseudomonads) except corynebacterium pyogenes. color change around colonies in the agar permitted the differentiation of pathogenic from nonpathogenic staphylococci. most staphylococcus aureus strains and some staphylococcus epidermidis strain ...19816792172
the antibacterial action of vancomycin.vancomycin inhibits the second stage of cell wall synthesis in susceptible bacteria. furthermore, there is evidence that vancomycin also alters the permeability of the cell membrane and selectively inhibits ribonucleic acid synthesis. stable l-phase variants are susceptible to vancomycin, but induction of bacterial l-phase variants with vancomycin is very difficult. vancomycin is active against a large number of species of gram-positive cocci and bacilli, such as staphylococcus aureus (including ...19816805065
isolation and presumptive identification of adherent epithelial bacteria ("epimural" bacteria) from the ovine rumen wall.one hundred sixty-one strains of adherent bacteria were isolated under anaerobic conditions from four sites on the rumen epithelial surface of sheep fed hay or a hay-grain ration. before isolation of bacteria, rumen tissue was washed six times in an anaerobic dilution solution, and viable bacteria suspended in the washings were counted. calculation indicated that unattached bacteria would have been removed from the tissue by this procedure, but a slow and progressive release of attached bacteria ...19817195191
rumen bacterial competition in continuous culture: streptococcus bovis versus megasphaera elsdenii.streptococcus bovis and megasphaera elsdenii were grown in continuous culture with maltose as the limiting substrate at dilution rates of 0.36, 0.22, and 0.12 h. after each steady-state turnover, the ph was decreased by adding concentrated hcl to the medium reservoir. relative counts of the two species at each dilution rate indicated that when the ph was high (6.6 to 6.0), higher dilution rates selected for a higher ratio of s. bovis to m. elsdenii. at intermediate ph (6.0 to 5.4), higher diluti ...198116345793
influence of plant phenolic acids on growth and cellulolytic activity of rumen bacteria.isolated rumen bacteria were examined for growth and, where appropriate, for their ability to degrade cellulose in the presence of the hydroxycinnamic acids trans-p-coumaric acid and trans-ferulic acid and the hydroxybenzoic acids vanillic acid and 4-hydroxybenzoic acid. ferulic and p-coumaric acids proved to be the most toxic of the acids examined and suppressed the growth of the cellulolytic strains ruminococcus albus, ruminococcus flavefaciens, and bacteroides succinogenes when included in a ...198216346090
streptococcus bovis and colonic neoplasia. 19827201599
[isolation of l forms of streptococcus bovis from blood cultures (author's transl)]. 19826809854
the association of recent streptococcus bovis bacteremia with colonic neoplasia. 19826815579
anaerobic radiometric detection of facultative gram-positive cocci in blood.radiometric detection of facultative gram-positive cocci, particularly streptococci, has been reported to be suboptimal. a recently marketed anaerobic bactec bottle (7c) with purportedly improved capability to detect facultative gram-positive cocci in blood was compared with the previously available bottle in a study of simulated bacteremia. the bactec system detected all beta-hemolytic streptococci and enterococci tested. detection of alpha-hemolytic streptococci was improved in general. howeve ...19826816586
streptococcus bovis meningitis following a dental procedure. 19826804645
direct testing of blood cultures for detection of streptococcal antigens.a direct, rapid, and simple method for the detection of streptococcal antigens of lancefield groups a, b, c, d, and g from blood cultures was developed by using a coagglutination test. fifty-five clinical specimens and 117 simulated blood cultures containing gram-positive cocci were tested. out of 6,261 clinical blood cultures screened, 55 cultures from 53 patients were positive, with organisms resembling streptococci, by gram stain. of these cultures, 78% (43 of 55) were pure cultures of strept ...19827050168
the association of remote streptococcus bovis bacteremia with colonic neoplasia.we prospectively studied five patients with a remote history of streptococcus bovis bacteremia who had not previously been evaluated for colonic pathology. this study was prompted by several reports of concomitant neoplasia in patients with recent s. bovis bacteremia. the patients were studied at a mean of 32 months after bacteremia. despite the absence of other signs or symptoms suggestive of bowel disease, a negative test for occult blood in stool and a negative fecal culture for s. bovis, tw ...19827072685
infective endocarditis in a community hospital.recent reviews from major university centers of infective endocarditis have stressed an increase in unusual infections owing to virulent pathogens. this article compares the 40 episodes of infective endocarditis at a community hospital complex with the recent literature. it was observed that the majority of infecting microorganisms were penicillin-susceptible streptococci similar to those seen in the early antibiotic era. an older patient population was encountered, but overall mortality was low ...19827073419
meningitis caused by streptococcus bovis.streptococcus bovis was isolated from the csf of a 66-year-old man with meningitis. his clinical appearance was unusual in that he lacked typical signs and symptoms of pyogenic meningitis. streptococcus bovis was also recovered from his blood, which suggested that bacterial endocarditis was the source of his cns infection. he was cured after four weeks of therapy with intravenous penicillin g potassium. this is the fourth reported case of meningitis caused by s bovis. the previous three patients ...19827073553
high-level aminoglycoside resistance in group a, b, g, d (streptococcus bovis), and viridans streptococci.of 20 clinical isolates of group a, b, g, d (streptococcus bovis), and viridans streptococci, 5 transferred their antibiotic resistance markers into streptococcal recipients at a low frequency (10(-4) to 10(-8)) in the apparent absence of extrachromosomal elements. all strains carried genetic markers for high-level resistance to streptomycin, kanamycin, neomycin, lividomycin a, and ribostamycin, as well as resistance to macrolides and related drugs, tetracycline, and chloramphenicol.19827081973
effect of lasalocid, monensin or thiopeptin on lactic acidosis in cattle.lasalocid, monensin or thiopeptin was administered intraruminally each at .33, .65 or 1.3 mg/kg body weight and evaluated for its effectiveness in preventing experimentally induced lactic acidosis in cattle. four rumen-fistulated cattle were used for each dosage level and the design was a 4 x 4 latin square with each animal receiving lasalocid, monensin, thiopeptin or no antibiotic. acidosis was induced by intraruminal administration of glucose (12.5 g/kg body weight). control cattle exhibited t ...19827085521
value of the minimum bactericidal concentration of antibiotics in the management of a case of recurrent streptococcus bovis septicaemia.after prostatectomy a 60-year-old man developed streptococcus bovis septicaemia. the patient did not respond to treatment with a combination of ampicillin and erythromycin and in vitro antagonism between these antibiotics was demonstrated by minimum bactericidal concentration (mbc). the value of determining the mbc of antibiotics used in the treatment of septicaemia is emphasised.19827107961
effect of ph on growth rates of rumen amylolytic and lactilytic bacteria.the relationship between the ph of the medium and specific growth rates, in well-buffered media at 38.5 degrees c, was determined for three strains of butyrivibrio fibrisolvens and for one strain each of streptococcus bovis, selenomonas ruminantium subsp. lactilytica. megasphaera elsdenii, veillonella alcalescens, and propionibacterium acnes. the ph optima for growth were between 6.1 and 6.6 for all six species, and the upper ph limits were between 7.3 and 7.8. the lower limit ph values for grow ...19827125656
effect of carbohydrates on the antibacterial activity of patulin on streptococcus bovis.the antibiotic activity of patulin on streptococcus bovis varied in the presence of different sugars in the incubation medium. the 50% inhibitory concentration (ic50) of patulin was 4.5 times greater in the medium containing glucose than in the lactose-containing medium (100.5 versus 22 micrograms/ml). the addition of two sugars (glucose plus lactose) to the medium was followed by the utilization of glucose only when patulin was present; lack of growth on lactose was not due to beta-galactosidas ...19827172139
conversion of amoscanate to a mutagenic metabolite in gnotobiotic mice implanted with streptococcus equinus.recent in vitro studies indicate that intestinal bacteria convert amoscanate (4-nitro-4'-isothiocyanodiphenylamine), an antischistosomal drug, to a potent mutagen. the present study indicates that the implantation of germfree mice with streptococcus equinus, isolated from the small intestine of conventional mice, restores the mutagenic activation of amoscanate in vivo.19827181482
neonatal streptococcus bovis (non-enterococcal group d streptococcus) septicemia and meningitis. report of a case. 19827187211
carcinoma of the colon 2 years after endocarditis due to streptococcus bovis.a patient with streptococcus bovis endocarditis, on complete gastrointestinal evaluation had only an adenomatous polyp of the sigmoid colon. twenty-eight months later she was found to have invasive cecal carcinoma. periodic evaluation of the gastrointestinal tract is therefore recommended for all patients with a history of s. bovis septicemia.19836829536
fluorogenic selective and differential medium for isolation of fecal streptococci.of 44 fluorogenic substrates tested for their ability to differentiate species of fecal streptococci, four yielded species-differentiating reactions. the remaining substrates either yielded uniformly positive, negative, or variable strain-dependent reactions. one substrate, 4-methylumbelliferone-alpha-d-galactoside, was hydrolyzed by streptococcus bovis and s. faecium and its biotypes. 4-methylumbelliferone-alpha-d-galactoside and a colorimetric starch substrate were incorporated into the fecal ...19836830220
purification and properties of pyruvate kinase from streptococcus sanguis and activator specificity of pyruvate kinase from oral streptococci.it was found that pyruvate kinases with two different regulatory characteristics were distributed among oral streptococci. the pyruvate kinases of streptococcus mutans, streptococcus salivarius, and streptococcus bovis were activated by glucose 6-phosphate, whereas the enzymes of both streptococcus sanguis and streptococcus mitis were activated by fructose 1,6-bisphosphate. pyruvate kinase (ec 2.7.1.40) from s. sanguis nctc 10904 was purified, giving a single band on sodium dodecyl sulfate-polya ...19836840832
association of streptococcus bovis bacteremia with bowel disease.we reviewed the medical records of 19 patients who had streptococcus bovis bacteremia. eight patients had diverticulosis, four had benign adenomatous colonic polyps, and three had adenocarcinomas of the gastrointestinal tract. laboratory workers and clinicians should be aware of the association of s. bovis bacteremia and gastrointestinal disease.19836853693
isolation of proteolytic rumen bacteria by use of selective medium containing leaf fraction 1 protein (ribulosebisphosphate carboxylase).the principle proteolytic bacteria isolated from bovine rumen contents by virtue of the ability to obtain nitrogen from the proteolysis of leaf fraction 1 protein (ribulosebisphosphate carboxylase, ec 4.1.1.39) were identified as streptococcus bovis and butyrivibrio spp. substitution of fresh fodder, rich in soluble protein, for a hay-concentrates diet resulted in enhanced ruminal proteolytic activity and a significant increase in the number of bacteria able to use fraction 1 protein as the sole ...19836881961
humoral reactions in human endocarditis due to streptococcus bovis: evidence for a common s bovis antigen.humoral reactions to native culture filtrates of streptococcus bovis were studied in patients with endocarditis by means of two-dimensional crossed immunoelectrophoresis. serum from patients with s bovis endocarditis produced eight different precipitin arcs. lex antigen cross-reacted with sera from patients with viridans streptococcal endocarditis, and ta antigen cross-reacted with ribitol teichoic acid-positive sera from patients with staphylococcus aureus bacteremia. one antigen, common (c), w ...19836886490
comparative in vitro activity of norfloxacin against urinary tract pathogens.the in vitro activity of norfloxacin (mk366) against 477 aerobic gram-negative and gram-positive clinical isolates was compared to that of nalidixic acid, nitrofurantoin, ampicillin, cephalexin, trimethoprim, sulfamethoxazole, and the combination trimethoprim-sulfamethoxazole. norfloxacin was more active than the other agents against all gram-negative organisms tested. minimal inhibitory concentrations (mics) of pseudomonas aeruginosa were less than or equal to 0.125-32 mg/l with 90% inhibited ( ...19836224679
streptococcus bovis endocarditis and colonic carcinoma: a neglected association. 19836407678
rapid identification of group d streptococci with the api 20s system.the api 20s system (analytab products) was evaluated as a means of identifying 209 isolates of lancefield group d streptococci to the species level. results were compared with those from a conventional tube biochemical identification system and from serological grouping. use of the latest 20s computerized data base allowed species identification of 97% (203 of 209) of test isolates after a 4-h incubation period and 99% (208 of 209) of test isolates if supplemental overnight biochemical tests wer ...19836409923
studies on the mechanism of intrinsic resistance to beta-lactam antibiotics in group d streptococci.six penicillin-binding proteins (pbps) were detected in clinical isolates of each one of three group d streptococci: streptococcus bovis, s. faecalis and s. faecium. when examined in whole organisms, the pbps of s. faecium, the most penicillin-resistant species of group d streptococci, generally had lower affinities for the antibiotic than those of s. faecalis (intermediate penicillin resistance), which in turn were of lower affinity than those of s. bovis (penicillin-sensitive). on the other ha ...19836409985
asymptomatic colonic carcinoma revealed by investigation of streptococcus bovis bacteremia.a case of bacteremia in a patient with a prosthetic aortic valve is reported. the identification of streptococcus bovis as the causative organism and its known association with gastrointestinal disease led to investigations which revealed carcinoma of the sigmoid colon in an asymptomatic patient. the association of colonic lesions with s. bovis bacteremia is briefly reviewed.19836577837
relation of rumen atp concentration to bacterial and protozoal numbers.cultures of streptococcus bovis and mixed populations of rumen bacteria were used to investigate the concentration of atp and rumen bacterial numbers at various stages of growth. atp, extracted with tris buffer, was analyzed using the firefly luciferin-luciferase bioluminescent reaction. atp concentrations of s. bovis and mixed cultures of rumen bacteria significantly correlated with live cell counts during the log phase of growth but not during the stationary phase. the average cellular atp con ...19836639012
splenic abscess associated with streptococcus bovis septicemia and neoplastic lesions of the colon.streptococcus bovis bacteremia is known to be associated with gastrointestinal disease, especially colon lesions. two patients are presented with a previously unreported syndrome: s. bovis bacteremia, endocarditis, colon neoplasms, and splenic abscess. in one case, the colonic lesion was occult and required colonoscopy for identification (normal barium enema). s. bovis bacteremia is an important marker for occult gastrointestinal neoplasia.19836641468
rapid identification of enterococci.a 4-h method was devised to differentiate the non-beta-hemolytic streptococci into three categories: enterococci, group d nonenterococci, and viridans streptococci. all of the streptococcus faecalis, 90% of the streptococcus faecium (enterococci), and 96% of the streptococcus bovis biotype i (group d nonenterococci) cultures were correctly identified by the 4-h method. the less commonly isolated group d cultures had lower rates of correct identification by this method. none of the viridans strep ...19836643675
streptococcus bovis endocarditis and colonic polyp. 19836647193
streptococcus bovis septicemia and meningitis associated with chronic radiation enterocolitis.we describe the first patient with simultaneous s bovis septicemia and meningitis associated with chronic radiation enterocolitis. this case underlines the value of a thorough gastrointestinal evaluation of all patients with s bovis infection, and the need for a neurologic investigation even with minor neurologic manifestations.19836648628
streptococcus bovis bacteremia and acquired immunodeficiency syndrome. 19836651037
endocarditis due to a penicillin-tolerant streptococcus bovis: microbiological findings and echocardiographic follow-up.we are presenting a case of endocarditis due to a penicillin-tolerant streptococcus bovis in a 65-year-old patient. the minimal bactericidal concentration of penicillin (40 mg/l) was more than 100-fold the minimal inhibitory concentration (0.08 mg/l). the mbc of penicillin was 0.31 mg/l in the presence of 1.25 mg/l gentamicin. cross-sectional echocardiography revealed endocarditis of the anterior leaflet of the tricuspid valve and a vegetation on the aortic valve which appeared to be pedunculate ...19836668068
detection and partial characterization of antibacterial factor(s) in alveolar lining material of rats.intracellular killing of staphylococcus aureus by alveolar macrophages is known to be enhanced by exposure to alveolar lining material. because this material may have a role in pulmonary host defenses, we have studied its effect on pneumococci and other nonstaphylococcal organisms. alveolar lining material from rats caused rapid killing and lysis of pneumococci. the antipneumococcal activity was localized to the surfactant-containing fraction of the fluid and was not affected by trypsin. phospho ...19836129262
compositions and characteristics of strains of streptococcus bovis.streptococcus bovis strains jb1, 26, 581axy2, 21096c, and 45s1 grew on glucose, maltose, starch, sucrose, cellobiose, and lactose. none of these strains grew on xylose or ribose, but arabinose was a suitable energy source for strains 2109c and k27ff4. all strains grew at 45 degrees c, but incubation at 50 degrees c prevented growth. growth was permitted in 2% sodium chloride, but 6.5% sodium chloride was inhibitory. doubling times ranged from 24 to 27 min, and final ph on glucose was approximate ...19846205028
streptococci with dual antigen specificity for lancefield groups d and g.streptococci have been isolated which may be identified in serological tests as belonging to lancefield group g, but in fact belong to group d. twenty-two cultures with this property were obtained from four countries; they included streptococcus bovis and streptococcus durans as well as streptococcus faecalis. selected strains were studied in serological tests and cross-absorption procedures, in which it was found that the group g reaction given by these isolates is due to an epitope with at lea ...19846084598
behaviour of campylobacter sputorum subspecies mucosalis in gnotobiotic pigs.gnotobiotic pigs were dosed orally with campylobacter sputorum subspecies mucosalis, either alone, or combined with rotavirus or non-pathogenic escherichia coli and streptococcus bovis to study the behaviour of c s mucosalis in defined conditions, to assess intracellular parasitism of enterocytes by c s mucosalis, and if possible to establish an experimental model of porcine intestinal adenomatosis. c s mucosalis colonised the gut of gnotobiotic pigs, persisting for up to 47 days after infection ...19846087431
a note on a modified membrane-bovis agar for the enumeration of streptococcus bovis by membrane filtration.a modified membrane-bovis agar, containing a reduced quantity of sodium azide, for the isolation and enumeration of streptococcus bovis is described and evaluated. higher counts, with larger colonies, were obtained from water and sewage samples with this medium than with the original formulation.19846706885
streptococcus bovis endocarditis with carcinoma of the colon. 19846719179
isolation and identification of adherent epimural bacteria during succession in young lambs.successive changes in aerobic and anaerobic bacterial counts and changes in the generic composition of the epimural community in lambs from 1 to 10 weeks were determined. bacterial culture counts revealed a predominantly anaerobic community, with the mean anaerobic count being 1.4 x 10(7) cfu/cm2 of tissue surface. the aerobic count was highest at 1 week of age and declined significantly thereafter to a mean of 1.8 x 10(4) cfu/cm2, thus representing only 0.13% of the mean anaerobic count after w ...19846721489
a note on the pectinolytic enzyme of streptococcus bovis.a pectinolytic strain of streptococcus bovis isolated from the bovine rumen produced an endopolygalacturonate lyase (ec 4.2.2.2). the principal decomposition products of pectin were unsaturated methyl tetra- and tri-galacturonates.19846746470
measurement of microbial alpha-amylases with p-nitrophenyl glycosides as the substrate complex.the detection of alpha-amylase is commonly used in clinical microbiology laboratories to aid in differentiating streptococcus bovis from other streptococci. it is also useful in identifying eikenella corrodens and the gravis subspecies of corynebacterium diphtheriae and in separating species of the genera bacteroides, clostridium, actinomyces, and bacillus. currently, the most frequently used procedure utilizes starch as the substrate and iodine as the indicator. starch is incorporated into a ag ...19846418764
the uptake and utilization of entodinium caudatum, bacteria, free amino acids and glucose by the rumen ciliate entodinium bursa.washed suspensions of entodinium bursa were incubated anaerobically with entodinium caudatum, ten species of bacteria and a yeast. the rate of uptake and digestion of these micro-organisms was investigated. protozoa grown in vivo did not engulf proteus mirabilis or klebsiella aerogenes but rapidly took up bacillus megaterium. selenomonas ruminantium, torulopsis glabrata and streptococcus bovis, although only the last was digested with release of soluble material into the medium. protozoa grown i ...19846427172
in vitro susceptibility of streptococcus bovis to six antibiotics.a recent report of two isolates of streptococcus bovis resistant to killing by low levels of penicillin g prompted this study of the in vitro susceptibility of 100 clinical isolates of s bovis to six antibiotics. using a microdilution method, we found the minimum bactericidal concentrations for 99% of the isolates to be as follows: penicillin g, 0.5 microgram/ml; methicillin, 16 micrograms/ml; ampicillin, 0.5 microgram/ml; cephalothin, 2 micrograms/ml; clindamycin, 2 micrograms/ml; and vancomyci ...19846467280
streptococcus bovis endocarditis and its association with colonic carcinoma.two cases of colonic carcinoma detected in patients with streptococcus bovis endocarditis are presented. neither patient had any complaints referable to the gastrointestinal tract; gastrointestinal evaluations were undertaken and colonic lesions were identified purely on the basis of the patients' underlying endocarditis. both patients underwent successful surgery after completion of appropriate antibiotic treatment for s. bovis endocarditis. results of a literature search for similar cases are ...19846468203
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