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bacteremia with streptococcus bovis and streptococcus salivarius: clinical correlates of more accurate identification of isolates.two biotypes of streptococcus bovis can be identified by laboratory testing and can be distinguished from the phenotypically similar organism streptococcus salivarius. we assessed the clinical relevance of careful identification of these organisms in 68 patients with streptococcal bacteremia caused by these similar species. s. bovis was more likely to be clinically significant when isolated from blood (89%) than was s. salivarius (23%). there was a striking association between s. bovis i bactere ...19892915024
streptococcus bovis endocarditis and carcinoma of the colon. 19892924063
factors influencing the adherence of strains of streptococcus bovis and escherichia coli isolated from ruminal epithelium.two strains of streptococcus bovis (a1 and a5) and one strain of escherichia coli (0141:h28) isolated from the surface of bovine ruminal mucous epithelium were examined for adherence to isolated and cultured ruminal epithelial cells. the e. coli adhered to the target cell by means of fimbriae, which had several common properties with type 1 common fimbriae and caused mannose-sensitive haemagglutination. the a1 strain of s. bovis was devoid of fimbriae and its adherence to the epithelial surface ...19901974372
[infected false aneurysm at the level of an aortotomy cicatrix 5 years after mechanical replacement of the aortic valve].the authors report the case of streptococcus bovis infection of a pseudoaneurysm which developed in the aortotomy suture line five years after aortic valve replacement with a bjork-shiley prosthesis. this was an isolated lesion without involvement of the prosthesis or aortic ring and was an operative finding.19902106296
[fever, somnolence, vomiting, diarrhea].a 69-year-old female was admitted because of a febrile state, somnolence, nausea and diarrhea. addison's disease known to have developed several years earlier after adrenal tuberculosis suggested addisonian crisis triggered by an acute infection. therapy with steroids and substitution of electrolytes and fluid led to rapid improvement. streptococcus bovis was identified as causative agent. the known association of this germ with cancer of the colon led to further investigation which revealed can ...19902124719
[community- and hospital-acquired bacteremia: a retrospective study in a regional hospital. iii. microbiological aspects].a retrospective study was made of all blood cultures performed over a 40-month period at the ivrea-castellamonte hospital (turin, italy). a total of 4386 vials from 619 patients were examined. there were 619 positive vials (14.1%) from 131 patients (21.2%) corresponding to 145 bacteremia episodes, including 129 monomicrobial (89%) and 16 polymicrobial (11%). ten patients (1.6%) had more than one episode. there were 73 polluted vials (1.7%). a total of 165 microorganism were isolated: gram-positi ...19902133330
atpase-dependent energy spilling by the ruminal bacterium, streptococcus bovis.when the ruminal bacterium streptococcus bovis was grown in batch culture with glucose as the energy source, the doubling time was approximately 21 min and the rate of bacterial heat production was proportional to the optical density (1.72 microw/micrograms protein). if exponentially growing cultures were treated with chloramphenicol, there was a decline in heat production, but the rate was greater than 0.30 microw/micrograms protein even after growth ceased. since there was no heat production a ...19902140038
formation of a clear zone on tannin-treated brain heart infusion agar by a streptococcus sp. isolated from feces of koalas.gram-positive cocci, isolated from the feces of koalas and identified as streptococcus bovis biotype i, formed a distinct clear zone on tannin-treated brain heart infusion agar, suggesting that this isolate has the unique characteristic of degrading the tannin-protein complex.19902180375
in vitro activity and beta-lactamase stability of the new oral cephalosporin bay v 3522.the activity of the new oral cephalosporin bay v 3522 was compared to that of six other beta-lactam agents. bay v 3522 inhibited methicillin-susceptible staphylococcus aureus and staphylococcus epidermidis at less than or equal to 2 micrograms/ml, compared to mics of greater than or equal to 8 micrograms/ml for the other cephalosporins tested. it was more active against streptococcus pyogenes (mic less than or equal to 0.06 microgram/ml) than cefuroxime, cefixime, cephalexin and cefaclor. groups ...19902226499
streptococcus bovis meningitis: report of 2 cases.we describe 2 cases of streptococcus bovis meningitis and review the 9 cases previously reported. this microorganism is a rare cause of meningitis in which there are no distinctive clinical or laboratory features. the gram stain of the csf is usually negative. ten of the 11 cases had some underlying disease or comorbid condition that predisposed to s bovis infection: gastrointestinal disorder, endocarditis, csf leak, polymyalgia rheumatica, and mandibular block. treatment with high-dose penicill ...19902234437
low-affinity, high-capacity system of glucose transport in the ruminal bacterium streptococcus bovis: evidence for a mechanism of facilitated diffusion.the glucose phosphotransferase system (pts) of streptococcus bovis could not account for the glucose consumption of exponential cultures, and the kinetics of glucose transport were biphasic. a pts-deficient mutant lost the high-affinity, low-capacity system but retained its ability to take up glucose at high substrate concentrations. the low-affinity, high-capacity system did not require a proton motive force or atp and could not be driven by an artificial membrane potential in the presence or a ...19902268149
[endocarditis caused by streptococcus bovis and colorectal neoplasms].to evaluate the association of streptococcus bovis endocarditis with large bowel neoplasms.19902275628
[incidence and severity of cardiac involvement in streptococcus bovis septicemia. report of 10 cases].endocarditis due to the streptococcus bovis is an affection which is more and more often recognized and whose link with the colic tumor pathology has been well established those last few years and confirmed in this study with a frequency of 60 p. cent. however, few studies have stated the gravity of the heart affection in streptococcus bovis septicaemias. in this series of 10 streptococcus bovis septicaemias, the valvular affection is frequent and serious. the vegetations are found in 9 cases ou ...19902291615
vancomycin-aminoglycoside combinations in therapy of endocarditis caused by enterococcus species and streptococcus bovis.between 1974 and 1986, five patients with enterococcal endocarditis (three of whom had a prosthetic valve) and three patients with streptococcus bovis endocarditis were treated with a combination of vancomycin and an aminoglycoside for a mean duration of 40 days. this regimen was prescribed because of allergy to beta-lactam (n = 7) and/or failure of previous treatment (n = 4). three of the eight patients underwent valve replacement. in the six evaluable patients cure was achieved with the vancom ...19902318216
in vivo dental plaque-forming ability and cariogenicity of the bacterium streptococcus bovis in gnotobiotic rats.germ-free fisher rats, fed on a high sucrose diet, were monoinfected with streptococcus bovis strains. high levels of fissure caries were formed by three strains; one strain produced moderate levels; another produced only very low levels. no strain could produce approximal or buccal/lingual lesions. all strains could colonize the fissures of teeth in the lower jaw, as shown by scanning electron microscopy. the most cariogenic strains were associated with caries scores similar to those of strep. ...19902344292
the survival of streptococci and enterococci in animal feed and on straw with particular reference to streptococcus uberis.the survival of streptococcus uberis, strep. bovis, enterococcus faecalis spp. faecalis and ent. faecium in animal feed and on wheat straw was studied for one month. streptococcus bovis survived the best in feed and strep. uberis the worst while on straw ent. faecium was the most resilient species and there was little to choose between the other three. the recovery of all species, excepting strep. bovis, on selective and non-selective agar was comparable. the growth of strep. bovis, on the other ...19902351619
the triad of streptococcus bovis bacteremia, colonic pathology, and liver disease.the association of streptococcus bovis endocarditis and colon carcinoma has been reported previously in small series in the medical, but not surgical, literature. although the fecal carriage rate of s. bovis increases with colonic pathology, no explanation exists for the development of bacteremia in these cases. to explore the possible contribution of hepatic dysfunction to the development of portal and systemic bacteremia, the incidence of both colonic pathology and liver disease or dysfunction ...19902357141
streptococcus bovis bacteraemia: its significance for the colorectal surgeon.patients with streptococcus bovis bacteraemia are at high risk of harbouring an asymptomatic colorectal cancer or adenomatous polyps. it is therefore important to differentiate to a species level any group d streptococci grown in blood cultures. colonoscopy is the preferred method of screening these patients and high dose penicillin is the antibiotic of choice.19902357182
[gastrointestinal disorders and streptococcus bovis bacteremia]. 19902374620
effect of ionophores and ph on growth of streptococcus bovis in batch and continuous culture.batch cultures (ph 6.7) of streptococcus bovis jb1 were severely inhibited by 1.25 and 5 microm lasalocid and monensin, respectively, even though large amounts of glucose remained in the medium. however, continuous cultures tolerated as much as 10 and 20 microm, respectively, and used virtually all of the glucose. although continuous cultures grew with high concentrations of ionophore, the yield of bacterial protein decreased approximately 10-fold. when ph was decreased from 6.7 to 5.7, the pote ...19902383003
streptococcus bovis brain abscess associated with an occult colonic villous adenoma.streptococcus bovis is now recognized as a common cause of bacterial endocarditis. however, infection of the central nervous system by this organism is very rare. recent studies have demonstrated the association between streptococcus bovis infections and colonic neoplasms.19902404406
peptide and amino acid transport in streptococcus bovis.in amino acid transport studies with streptococcus bovis using 14c-labelled amino acids, it has been shown that between 87% and 95% of cell-associated radioactivity was located in the cytosol. in similar studies with unlabelled peptides, most test peptide associated with s. bovis was truly intracellular. using sodium dodecyl sulphate-polyacrylamide gel electrophoresis, the proteolytic activity in s. bovis was found to be largely cell-associated and of the serine-protease type, but stimulated by ...19901366976
digestion of barley, maize, and wheat by selected species of ruminal bacteria.differences in the digestion of barley, maize, and wheat by three major ruminal starch-digesting bacterial species, streptococcus bovis 26, ruminobacter amylophilus 50, and butyrivibrio fibrisolvens a38, were characterized. the rate of starch digestion in all cereal species was greater for s. bovis 26 than for r. amylophilus 50 or b. fibrisolvens a38. starch digestion by s. bovis 26 was greater in wheat than in barley or maize, whereas starch digestion by r. amylophilus 50 was greater in barley ...199016348322
selective medium for enumeration of tannin-protein complex-degrading streptococcus spp. in feces of koalas.a selective agar plate medium (tannin-treated brain heart infusion agar supplemented with colistin-oxolinic acid) was developed to enumerate tannin-protein complex-degrading streptococcus bovis in the feces of koalas. this medium was successfully used to enumerate strains from fecal samples but failed to enumerate those from pure cultures.199016348364
characteristics of streptococcus bovis associated with pigeons.streptococcus bovis strains isolated from different lesions in pigeons were found to differ from most s. bovis associated with mammals. s.bovis was only infrequently found in the gut and faeces of pigeons without streptococcal disease. the bacterium was also isolated from the crop and the pharynx of a minority of healthy pigeons.199018679954
streptococcus bovis infections in pigeons.streptococcus bovis infection was diagnosed in pigeons from 20 lofts submitted for post mortem investigation. clinical signs were very variable and ranged from hyperacute death to chronic lameness with arthritis. lesions were generally unspecific except for single cases of muscle necrosis with purulent myositis. histological examinations demonstrated the septicaemic nature of the infections. intravenous inoculations of s. bovis resulted in prostration, long lasting loss of weight and polyuria. m ...199018679955
in-vitro activity of win 57273 compared to the activity of other fluoroquinolones and two beta-lactam antibiotics.win 57273, a new fluoroquinolone, was four to 128-fold more active than ciprofloxacin and ofloxacin against gram-positive bacteria. the mic90 for staphylococcus aureus was 0.015 mg/l and for s. epidermidis, 0.03 mg/l. all lancefield group a, b, c, & g streptococci, streptococcus bovis and s. pneumoniae were inhibited by less than or equal to 0.06 mg/l compared to 0.5 mg/l for tosufloxacin and 2 mg/l for ciprofloxacin. for anaerobic bacteria win 57273 had an mic90 for bacteroides of 1 mg/l, and f ...19911657856
introduction of tn916 and pam beta 1 into streptococcus bovis jb1 by conjugation.the transposon tn916 and self-mobilizing plasmid pam beta 1 were conjugated from enterococcus faecalis to the ruminal bacterium streptococcus bovis jb1. transconjugants were identified by resistance to tetracycline (tn916) or erythromycin (pam beta 1) and by southern hybridization analyses. transfer frequencies were 7.0 x 10(-6) and 1.0 x 10(-6) per recipient cell for tn916 and pam beta 1, respectively. the transconjugants jb1/tn916 and jb1/pam beta 1 were used as donors for matings with e. faec ...19911662940
[in vitro bactericidal effect of temafloxacin and tosufloxacin against streptococci].tosufloxacin tosylate (tosu) and temafloxacin hydrochloride (tema) were tested in vitro against 248 clinical isolates of various species of streptococci recovered in a hospital microbiology laboratory (bellevue regional teaching hospital). species included s. pneumoniae (n = 20), group a streptococci (n = 22), group b streptococci (n = 30), group g streptococci (n = 17), group d s. bovis (n = 19), enterococcus faecium (n = 45), enterococcus faecalis (n = 28), s. sanguis (n = 21), s. milleri (n = ...19911666667
selection and application of streptococcus bovis as a silage inoculant.three strains of streptococcus bovis, a homolactic bacterium capable of utilizing starch, were evaluated for growth kinetics and ability to decrease the ph of alfalfa silage. a selected strain was evaluated for its competitiveness as an inoculant with enterococcus faecium, an organism used in inoculants, and for its ability to enhance the effect of a commercial inoculant. testing was completed over three studies using wilted alfalfa (28 to 34% dry matter) ensiled into laboratory silos. treatment ...19911746960
phenotypic characterization of co2-requiring strains of streptococcus bovis from koalas.we examined phenotypic characteristics of six mannitol-fermenting strains of streptococcus bovis, including two unusual co2-requiring strains isolated from koala feces. these strains did not grow in air, but grew in air supplemented with co2 and under reduced oxygen conditions. all six strains had the same biochemical characteristics, except that the co2-requiring strains did not produce beta-n-acetylglucosaminidase.19911746961
a survey of peptidase activity in rumen bacteria.twenty-nine strains of 14 species of rumen bacteria were screened for their ability to hydrolyse ala2, ala5, glyarg-4-methoxy-2-naphthylamide (glyarg-mna) and leu-mna. several species, notably megasphaera elsdenii, were active against ala2, and a smaller number, including bacteroides ruminicola, butyrivibrio fibrisolvens, ruminococcus flavefaciens, lachnospira multipara and ruminobacter amylophilus, broke down ala5. streptococcus bovis had an exceptionally high leucine arylamidase activity. howe ...19911748877
multiple brain abscesses caused by streptococcus bovis.a case of multiple brain abscesses caused by streptococcus bovis in a 28-year-old man is described. infected bronchiectasis is presumed to be the source of infection. streptococcus bovis infection is a rare cause of brain abscess. the aetiology and manifestations of this infection are discussed.19911753121
preliminary observations of interaction between bacteriophages and streptococcus bovis bacteria on ruminal epithelium primoculture.five streptococcus bovis strains (47/3, 59/2, 4/1, 46/2 and 44/9) isolated from calf ruminal fluid samples were examined for the adherence to cultured ruminal epithelium cells. four strains (47/3, 59/2, 4/1 and 46/2) were able to attach to the cultured epithelial cells. however, s. bovis 47/3 strain attached to the target cells in significantly greater numbers than the other strains. strain 44/9 did not adhere to cells of ruminal epithelium. the adherent bacteria were observed on the surface of ...19911771751
intracellular ph of acid-tolerant ruminal bacteria.acid-tolerant ruminal bacteria (bacteroides ruminicola b1(4), selenomonas ruminantium hd4, streptococcus bovis jb1, megasphaera elsdenii b159, and strain f) allowed their intracellular ph to decline as a function of extracellular ph and did not generate a large ph gradient across the cell membrane until the extracellular ph was low (less than 5.2). this decline in intracellular ph prevented an accumulation of volatile fatty acid anions inside the cells.19911781695
effect of growth conditions on the streptococcus bovis phosphoenolpyruvate glucose phosphotransferase system.four strains of the ruminal bacterium streptococcus bovis were surveyed for phosphoenolpyruvate (pep) and atp-dependent phosphorylation of glucose and the nonmetabolizable glucose analog 2-deoxyglucose. all four strains had high rates of glucose phosphorylation with either phosphoryl donor, but 2-deoxyglucose activity was much higher in the presence of pep. these results provide evidence for a pep-dependent glucose phosphotransferase system in these bacteria. mannose and 2-deoxyglucose inhibited ...19911808190
[streptococcus bovis meningitis and sepsis in neonates: report of two cases].streptococcus bovis is a veterinary organism rarely previously reported in the neonatal infection. two cases are presented of neonatal infection by this organism; one case manifested with meningitis and the other, with sepsis. seizure and respiratory distress were the symptoms found in these two babies, respectively. following adequate treatment, recovery was complete, and the infants enjoyed healthy lives post-discharge. s. bovis is always sensitive to penicillin, but resistant strain has been ...19911823516
fecal carriage of streptococcus bovis and colorectal adenomas.an association between fecal carriage of streptococcus bovis and colorectal carcinoma has been reported. a relationship between s. bovis and colorectal adenomas has also been suggested. in the present study, the relationship between s. bovis and adenomas was investigated. two of 18 current adenoma patients (11%) were found to have s. bovis in their stool compared with 12 of 84 controls (14%). six of 38 patients who had ever had a diagnosis of adenoma (16%) had s. bovis compared with 8 of 64 cont ...19911823534
the influence of agricultural run-off on bacterial populations in a river.the microbiological quality of the river riato (spain) was evaluated. the influence of cattle that roam free in the warm season was marked. the degree of faecal pollution in the river was higher than predicted from the river basin geographical characteristics. the counts of faecal indicators greatly increased when the cattle were allowed to roam free. counts of enterobacteria and faecal coliforms ranged from 10(3) to 10(6)/100 ml. faecal streptococci counts were smaller (less than 10/100 ml). es ...19911874685
phage resistance and altered growth habit in a strain of streptococcus bovis.bacteriophage (phi sb01) of streptococcus bovis, isolated from pooled rumen fluid of cattle, was a small siphovirus of morphotype b1. it contained double-stranded dna of length 30.9 kb, which was digested by the restriction endonucleases, ecori, hindiii, and pvuii. bacteria which survived phi sb01 infection (strain 2bar) grew in long chains (100-200 cells), ultimately forming large clumps of cells. this growth habit was in distinct contrast to that of the parent host strain which grew predominan ...19911884977
[isolation and analysis of strains of streptococcus faecium and streptococcus bovis resistant to s-(2-aminoethyl)-l-cysteine]. 19911902550
evaluation of two fluorogenic assays for identification of streptococcus species isolated from bovine mammary glands.liquid and agar assays that utilized 4-methylumbelliferyl-conjugated beta-d-glucuronide, beta-d-galactoside, or n-acetyl-beta-d-glucosaminide, and agglutination by dolichos biflorus lectin were evaluated for identification of streptococcus species isolated from bovine mammary glands. a greater number of streptococcus uberis isolates were negative for n-acetyl-beta-d-glucosaminidase by the liquid assay compared with the agar assay. enzyme profiles for streptococcus dysgalactiae were similar by bo ...19911904457
streptococcus bovis septicaemia associated with uncomplicated colonic carcinoma. 19911908347
[group d streptococci and enterococci: identification, sensitivity to antibiotics and a study of the high level resistance to aminosides (charles nicolle hospital in tunis)].197 strains of enterococcus and group d streptococcus were isolated from human material at charles nicolle hospital (tunis) and identified by biochemical tests: 174, enterococcus faecalis, 6 enterococcus faecium, 2 enterococcus durans and 15 streptococcus bovis. the sensitivity to antibiotics was studied: all enterococcus faecium were resistant at least to one antibiotic, 15% of enterococcus faecalis were sensitive for all antibiotics tested the other species were frequently sensitive. high leve ...19911910140
differentiation of enterococci from other group d streptococci by means of a specific monoclonal antibody.we report on the specificity of a monoclonal antibody which reacts with autoclaved extracts of four species of enterococci but does not react to the same extent with similar extracts from two non-enterococcal group d streptococci. the monoclonal antibody also reacts specifically with purified lipoteichoic acid from streptococcus faecalis but not significantly with purified lipoteichoic acid from the non-enterococcal species streptococcus bovis and streptococcus equinus. the specific antigen dete ...19911936940
enumeration by a miniaturized method of escherichia coli, streptococcus bovis and enterococci as indicators of the origin of faecal pollution of waters.counts of escherichia coli, faecal streptococci and enterococci were made on faecal specimens from human and animal origin and urban raw sewage waters, with microtiter plates containing selective substances. escherichia coli was more numerous than faecal streptococci and enterococci in 80% of the samples regardless of the origin. consequently the use of the ratio e. coli/faecal streptococci to distinguish human from animal origin of faecal pollution is questionable. enterococcus faecalis was pre ...19911938678
[cloning the alpha-amylase gene of streptococcus bovis and its expression in bacillus subtilis cells].the gene coding for alpha-amylase from the ruminant bacterium streptococcus bovis was cloned on the plasmid pmx39 in bacillus subtilis cells. an alpha-amylase positive colony was isolated in the initial screening of 3900 colonies on the medium containing insoluble starch. the size of the insert was approximately 2.8 kb. the recombinant plasmid was stably maintained in bacillus subtilis cells under the nonselective conditions.19911944323
a re-assessment of bacterial growth efficiency: the heat production and membrane potential of streptococcus bovis in batch and continuous culture.glucose-limited, continuous cultures (dilution rate 0.1 h-1) of streptococcus bovis jb1 fermented glucose at a rate of 3.9 mumol mg protein-1 h-1 and produced acetate, formate and ethanol. based on a maximum atp yield of 32 cells/mol atp (stouthamer 1973) and 3 atp/glucose, the theoretical glucose consumption for growth would have been 2.1 mumol mg protein-1 h-1. because the maintenance energy requirement was 1.7 mumol/mg protein/h (russell and baldwin 1979), virtually all of the glucose consump ...19911953297
resistance of streptococcus bovis to acetic acid at low ph: relationship between intracellular ph and anion accumulation.streptococcus bovis jb1, an acid-tolerant ruminal bacterium, was able to grow at phs from 6.7 to 4.5, and 100 mm acetate had little effect on growth rate or proton motive force across the cell membrane. when s. bovis was grown in glucose-limited chemostats at ph 5.2, the addition of sodium acetate (as much as 100 mm) had little effect on the production of bacterial protein. at higher concentrations of sodium acetate (100 to 360 mm), production of bacterial protein declined, but this decrease cou ...19912036013
[prospective study of routine screening for cirrhosis and colonic tumors associated with streptococcus bovis bacteremia].between 1987 and 1990, seven patients hospitalized in our hospital had bacteremia caused by streptococcus bovis. complete gastrointestinal evaluation was routinely carried out for digestive portal of entry and liver disease screening. in four cases (2 bacteremia, 2 endocarditis), a colonic growth was detected: sigmoid adenoma (n = 1) and rectosigmoid carcinoma (n = 4); in one case (endocarditis), several rectosigmoid carcinomas were associated with alcoholic cirrhosis; in one case (bacteremia), ...19912060742
dap-decarboxylase activity and lysine production by rumen bacteria.the last step of pathway of lysine biosynthesis by rumen bacteria was tested. the first measurements of dap-decarboxylase activity and of lysine production by megasphera elsdenii, selenomonas ruminantium, clostridium spp., butyrivibrio fibrisolvens and bacteroides succinogenes as well as the first attempts to increase the lysine production by ruminal streptococci by mutation are described. the highest values were measured in selenomonas ruminantium (dap-decarboxylase activity = 146 micrograms da ...19921295484
[evaluation of usefulness of the pyr-wellcome test for identifying microorganisms from the genus enterococcus].the study was aimed at evaluation of usefulness of pyr-wellcome test in bacteriological diagnostic. results of identification of enterococcal strains by application of the above test were performed on 157 strains of enterococcus spp., 15 strains of streptococcus pyogenes and 12 of streptococcus bovis. application of test for pyr-ase production results in shortening of diagnostic procedure. basing on morphological features, including type of hemolysis, lack of catalase production and presence in ...19921297028
[the effect of culture media on bacteriocin production in various strains of bacteria].some staphylococcus and enterococcus strains were used to investigate the effect of culture medium on bacteriocin production. staphylococcus cohnii sc7, staphylococcus sp. ztj 151, s. saprophyticus ss 877, enterococcus faecium ef1 and e. faecalis efg2 were isolated from the rumen wall and contents of lambs, calves and fallow deer, enterococcus gallinarum eg10 and e. avium ea12 were isolated from the caecum of japanese quail. the tested bacteria belong to producers with a wide antimicrobial effec ...19921297243
[problems posed by the association of streptococcus d infectious endocarditis and colorectal tumor].the problems arising from the discovery of a colorectal tumor during an infectious endocarditis caused by streptococci d have rarely been mentioned in the surgical literature. the frequency of association of an asymptomatic colorectal tumor and of a streptococcus bovi endocarditis is now undisputed. this notion implies the systematic search for an intestinal lesion (adenoma or carcinoma) in case of endocarditis or septicemia without involvement of the valves, caused by a streptococcus of group d ...19921339726
adherence of ruminal streptococcus bovis and lactobacillus strains to primary and secondary cultures of rumen epithelium.six strains of rumen lactobacillus and four streptococcus bovis strains isolated from rumen wall and fluid samples were examined for the adherence to cells of primary and secondary cultures of ruminal epithelium (rec) prepared from sheep and calf. s. bovis adhered to the keratinized rec. ruminal lactobacilli did not adhere. the presence of rumen lactobacilli in mixture had no influence on the adherence of s. bovis strains. no difference was observed in the adherence of tested bacteria to epithel ...19921343946
streptococcus bovis endocarditis associated with colonic adenocarcinoma: report of a case.streptococcus bovis (s. bovis) endocarditis has been increasing over recent decades, especially among the senile population. a 74-year-old man presented with intermittent fever for two months. he had a past history of aortic dissection and underwent a bentall operation one year before admission. a janeway lesion was noted on his right hand and six blood cultures grew s. bovis. he was treated with penicillin-g, 3 microu intravenously, every six hours, and became afebrile three days later. a colon ...19921362122
characterization of enterococcal isolates by restriction enzyme analysis of genomic dna.a restriction enzyme analysis (rea) of chromosomal dna for the intra-species characterization of enterococci is reported. the dna was extracted by a rapid method and digested with the restriction enzyme sal i to provide a characteristic 'fingerprint' consisting of 10-20 bands in the 1.6-5.0 kb range. one hundred and eighty enterococcal isolates were examined; 5 were type strains, 15 from an out-patient clinic and 160 from a geographically isolated british antarctic survey base. the epidemiologic ...19921379935
cloning and expression of an amylase gene from streptococcus bovis in escherichia coli.an amylase gene was identified in a streptococcus bovis 033 lambda gtwes lambda b genomic library. using a starch overlay and a congo red-iodine staining procedure, amylase positive clones could be identified by zones of clearing. ten amylase positive clones were identified using this procedure. the clone chosen for further study, lambda sba105, contained an insert of approximately 7.5 kb. the insert was mapped, and subcloning localized the amylase gene to a region of approximately 3.1 kb. cloni ...19921380794
4-week treatment of streptococcal native valve endocarditis with high-dose teicoplanin.the efficacy and safety of a 4-week course of intravenous teicoplanin (500 mg every 12 h for the first 2 days and 10 mg/kg of body weight every 24 h thereafter) in the treatment of streptococcal native valve endocarditis in 20 patients were evaluated. all blood isolates were inhibited by a concentration of 0.12 micrograms of teicoplanin per ml. serum bactericidal activity levels were measured 1/2 and 24 h after antibiotic infusion on days 5 to 7 of therapy in 19 patients, and titers of greater t ...19921386972
biochemical and antigenic properties of streptococcus bovis isolated from pigeons.biochemical and serological properties of 60 strains of streptococcus bovis isolated from healthy pigeons and from pigeons that died from s. bovis septicemia were determined. on the basis of the hemolysis of bovine erythrocytes, the production of polysaccharides on saccharose-containing media, and the fermentation of mannitol, inulin, trehalose, and l-arabinose, the isolates were classified in five biotypes and two subbiotypes. slide agglutination and microagglutination tests using monospecific ...19921401011
[spondylodiscitis in a cirrhotic patient with penicillin g tolerant streptococcus bovis septicemia]. 19921409468
rheumatic manifestations of infective endocarditis.rheumatic manifestations are common and varied in infective endocarditis. we performed a retrospective case analysis on 87 patients with 93 episodes of infective endocarditis admitted to flinders medical centre over an 11 year period (1980-1990). disabling musculoskeletal symptoms and signs were documented in 22 (25%) of the patients. thirteen patients developed severe or moderately severe low back pain during their illness, two with radiological evidence of a septic discitis or vertebral osteom ...19921411084
[adenocarcinoma of the colon disclosed by endocarditis caused by streptococcus bovis].the association of streptococcus bovis endocarditis with colonic neoplasms has been well documented. we describe a patient in whom the finding of a str. bovis endocarditis stimulated investigation which resulted in the diagnosis and surgical treatment of an adenocarcinoma of the colon.19921414475
clinicopathology of meningoventriculitis due to streptococcus bovis infection in neonatal calves.three neonatal calves ranging in age from 4 to 14 days were examined pathologically and bacteriologically. the calves showed depression, anorexia, pyrexia, and difficulty or inability to stand followed by cloudiness of the ocular aqueous humor or cornea. autopsy revealed congestion, petechiae, and cloudy areas in the meninges. histologically, the central nervous system (cns) lesions were prominent and limited to the meninges where fibrinous exudate and infiltrations of neutrophils, macrophages, ...19921420567
the effect of ph on the heat production and membrane resistance of streptococcus bovis.non-growing cultures of streptococcus bovis jb1 which were incubated in 2-[n-moropholino] ethane-sulfonic acid (mes)-phosphate buffer (ph 6.8) and glucose (2 g/l) produced heat at a rate of 0.17 mw/mg protein, and this rate was proportional to the enthalpy change of the homolactic fermentation. since the growth-independent heat production could be eliminated by dicyclohexylcarbodiimide (dccd), an inhibitor of f1f0 atpases, it appeared that virtually all of the energy was being used to counteract ...19921444715
experimental streptococcus bovis infections in pigeons.thirty pigeons were experimentally infected with streptococcus bovis using an intravenous infection model. ninety percent of the inoculated pigeons developed clinical disease. disease signs included acute death, inability to fly, lameness, inappetence, emaciation, polyuria, and the production of slimy, green droppings. at necropsy, the septicemic character of the disease was evident. typical lesions included extensive well-circumscribed areas of necrosis in the pectoral muscle, tenosynovitis of ...19921485874
culture media for enterococci and group d-streptococci.lancefield group d-streptococci are contaminants of various food commodities, especially those of animal origin. they encompass the new genus enterococcus comprising 13 known species and some species of streptococci which have their habitat in the intestine of animals, e.g. streptococcus bovis, suis and equinus. the serologically based grouping may no longer constitute the best definition for streptococci from the food chain. food hygiene monitoring systems using enterococci as indicators need r ...19921486020
treatment of endocarditis due to penicillin-susceptible streptococci with a two-week course of ceftriaxone followed by oral amoxicillin. 19921486896
[bacteremia caused by s. bovis and cirrhosis]. 19921489800
streptococcus bovis endocarditis as a presenting manifestation of idiopathic ulcerative colitis.streptococcus bovis bacteraemia and endocarditis have been associated with several gastrointestinal diseases, mainly malignant or potentially malignant tumours, and less commonly non-malignant gastrointestinal disorders. we describe a 73 year old man in whom streptococcus bovis endocarditis developed, and was the presenting manifestation of undiagnosed quiescent ulcerative colitis. such an association has not been described previously.19921494518
interaction of ruminal bacteria in the production and utilization of maltooligosaccharides from starch.the degradation and utilization of starch by three amylolytic and one nonamylolytic species of ruminal bacteria were studied. pure cultures of streptococcus bovis jb1, butyrivibrio fibrisolvens 49, and bacteroides ruminicola d31d rapidly hydrolyzed starch and maltooligosaccharides accumulated. the major starch hydrolytic products detected in s. bovis cultures were glucose, maltose, maltotriose, and maltotetraose. in addition to these oligosaccharides, b. fibrisolvens cultures produced maltopenta ...19921539992
enterococcal and streptococcal species isolated from faeces of calves, young cattle and dairy cows.faeces from non-ruminating calves were found to contain several species of enterococci: enterococcus avium, ent. cecorum, ent. durans, ent. faecalis, ent. faecium and ent. hirae. enterococcus faecalis was the most frequent. few of these animals carried streptococci. streptococcus bovis largely predominated in ruminating calves, young cattle and dairy cows. other streptococci as well as enterococci were infrequent in dairy cows, but a variety of other streptococci and enterococci were found in th ...19921541597
[septic arthritis due to streptococcus bovis].a 47-year-old man presented with arthritis of the right shoulder and spondylodiscitis by streptococcus bovis. this microorganism is a frequent cause of endocarditis and has been associated with gastrointestinal neoplasm, mainly carcinoma of the colon; however up to the present it had not been described as an causal agent of septic arthritis. the studies carried out on the patient permitted the exclusion of the existence of a digestive neoplasm and endocarditis. despite a prolonged evolution prio ...19921552764
fecal carriage of streptococcus bovis and inflammatory bowel disease. 19921568603
streptococcus bovis meningitis associated with a colonic villous adenoma. 19921576301
antimutagenicity of milk cultured with lactic acid bacteria against n-methyl-n'-nitro-n-nitrosoguanidine.the antimutagenic effect of cultured milk using 71 strains of lactic acid bacteria belonging to the genus lactobacillus, streptococcus, lactococcus, and bifidobacterium on the mutagenicity of n-methyl-n'-nitro-n-nitrosoguanidine was investigated in vitro using salmonella typhimurium ta 100 as an indicator bacterium. each cultured milk sample displayed its characteristic antimutagenic effect on the mutagenicity of n-methyl-n'-nitro-n-nitrosoguanidine. the milk cultured with lactobacillus acidophi ...19921578035
microflora of the pouch of the koala (phascolarctos cinereus).microflora of the pouch epithelium of 17 female koalas (phascolarctos cinereus) were examined in relation to their current reproductive status and recent reproductive history. no microbial growth was observed in pouch swabs from 13 of 17 (76%) koalas, including four females without young, seven with pouch young and two with back young (i.e. permanently emerged from the pouch). growth of bacteria or yeasts was observed in pouch swabs from four koalas, each of which had experienced mortality of it ...19921602580
etiology and antibiotic susceptibility of bloodstream streptococcus sp.249 episodes of streptococcus bacteraemia in hospitalized patients were evaluated for both clinical and microbiological features. specification of the isolates demonstrated that infective endocarditis was predominantly associated with streptococcus sanguis and streptococcus bovis whereas streptococcus pyogenes and streptococcus milleri were the most common cause of local and/or systemic infections. in vitro-susceptibility tests towards 9 selected antibiotics proved that beta-lactam antibiotics a ...19921611209
[a man of 68 with infectious endocarditis who died suddenly]. 19921620945
tannin-protein complex-degrading enterobacteria isolated from the alimentary tracts of koalas and a selective medium for their enumeration.tannin-protein complex (t-pc)-degrading enterobacteria (t-pcde) were isolated from the feces and from a layer of bacteria attached to the cecal wall of koalas. the t-pcde were facultatively anaerobic, gram-negative, pleomorphic, nonmotile bacilli. the bacteria were also oxidase and catalase negative and resistant to vancomycin, reduced nitrates to nitrites, and grew on macconkey agar. growth on tannin-treated agar media showed a distinctive clear zone around the colony. from these observations, ...19921622248
regulation and cloning of the gene encoding amylase activity of the ruminal bacterium streptococcus bovis.streptococcus bovis is an important starch-degrading ruminal bacterium that has been implicated as being important in the etiology of a number of ruminal pathologies associated with diets high in grains. previous studies with s. bovis have shown that amylase production was influenced by the growth substrate, but the nature of this regulation was not determined. the current study was conducted to better describe the regulatory phenomena and gain a better understanding of the molecular characteris ...19937679887
development of a dna probe for streptococcus bovis by using a cloned amylase gene.streptococcus bovis is a normal inhabitant of the rumen but has been implicated as a causative agent for ruminal lactic acidosis and related problems. while rarely isolated from humans, s. bovis has been identified as a causative agent for endocarditis, meningitis, and septicemia. recent reports have also suggested a correlation between human colonic carcinoma and increased levels of s. bovis. identification of s. bovis strains of human origin has been problematic because of variations in result ...19937691873
[bacterial endocarditis: current bacteriological data].the bacteria causing infective endocarditis have not changed significantly despite the diversity of potential portals of entry. streptococci (viridans) cause 35 to 45% of cases of endocarditis. group d streptococci of gastrointestinal origin cause about 20% of cases of endocarditis: streptococcus bovis is the most commonly isolated species followed by the enterococcus. the beta-haemolytic streptococci of groups a, b, c and g are rarely isolated. seventeen to thirty per cent of endocarditis is ca ...19938024385
streptococci and enterococci associated with tonsils of cattle.streptococcus suis, streptococcus bovis and the mastitis pathogens streptococcus dysgalactiae and streptococcus uberis were the most frequently occurring streptococci in tonsils of cattle. streptococcus suis dominated in samples from calves between 1 month and 1 year of age, but was much less frequent in calves less than 1 month old. the mastitis pathogen strep. dysgalactiae was found more often in calves than in older animals. enterococci were relatively rare, except in the youngest age group. ...19937763446
sbvi restriction endonuclease from streptococcus bovis.restriction endonuclease sbvi, an isoschizomer of haeiii, has been isolated from rumen amylolytic bacterium streptococcus bovis ii/1. sbvi was purified from cell extract by phosphocellulose chromatography and heparin-sepharose chromatography. the recognition sequence of sbvi was identified by digestion of pbr322, puc9 and lambda-dna and comparing the cleavage patterns obtained with computer-derived data. sbvi recognizes the 4-bp palindrome, 5'-ggcc-3' and cleaves dna after the second g in the se ...19937764381
probiotics and manipulation of rumen development and function.there is good evidence that the bacterial and fungal probiotics are effective in the manipulation of rumen development and function. the effects of adherent streptococcus bovis preparations were manifested by significant increase of adherent s. bovis bacteria and alpha amylase activity in the rumen wall of young ruminants. fungal probiotics based on saccharomyces cerevisiae and aspergillus oryzae are rapidly gaining acceptance as a means of improving productivity in adult ruminants. however, fun ...19938215880
streptococcus bovis meningitis: no association with colonic malignancy. 19938218715
a case of infective endocarditis in a farmer caused by streptococcus equinus.the following is a case report of a farmer with documented aortic valve disease who developed bacterial endocarditis secondary to streptococcus equinus. this is a rare pathogen in man and its acquisition in this case may be related to the subject's occupation.19938223744
[pulmonary valve endocarditis, bilateral deep vein thrombosis amd recurrent pulmonary emboli].a 57-year-old obese man with hypertensive heart disease and long-standing varicose veins developed recurrent bouts of fever, lung infiltrations, cardiac arrhythmias and increasing dyspnoea. on admission multiple lung emboli and bilateral deep vein thromboses were confirmed. the echocardiogram demonstrated floating vegetations on all three pulmonary valve cusps. biochemical tests indicated an inflammatory constellation (esr 62/105 mm, c-reactive protein 13.3 mg/dl), partial respiratory insufficie ...19938243249
comparative effect of salinomycin and monensin on streptococcus bovis strain atcc 9809.the effect of salinomycin (2.5 mg/l) on the in vitro growth of streptococcus bovis strain atcc 9809, on its catabolism of glucose and on its anabolism of lactic acid was compared with that of monensin (5.0 mg/l). in control cultures containing no ionophore, glucose consumption and lactic acid production were completed concomitantly with maximal growth which was reached after 2 h of incubation at 37 degrees c. no further growth of s. bovis was observed within 2 h after the addition of one or the ...19938264432
the inhibition by ionophores in vitro of an enterococcus-like pathogen of rainbow trout, oncorhynchus mykiss.streptococcosis is a major disease of several fish species in australia, japan and south africa. the minimum inhibitory concentration of some ionophores (lasalocid, monensin, narasin and salinomycin) was determined in vitro for an enterococcus-like species pathogenic for rainbow trout (oncorhynchus mykiss) in australia. forty isolates of the fish pathogen were tested, together with control strains of staphylococcus aureus atcc 29213, enterococcus faecalis atcc 29212 and streptococcus bovis atcc ...19938273272
serological investigation into the association between streptococcus bovis and colonic cancer.to determine if there was an increase in antibody titre to streptococcus bovis in patients with colonic cancer, and if this might be a useful marker of the presence for colonic cancer.19938282836
prevalence of antibodies to streptococcus bovis serotype 1 in racing pigeons.indirect elisa techniques for the detection of antibodies to s. bovis serotypes 1, 2 and 3 in pigeon plasma were developed. whole formaldehyde-inactivated bacteria were used as coating antigens. bound antibodies were detected with peroxidase-conjugated rabbit anti-pigeon serum and opd and h2o2 as chromogen and substrate, respectively. elisa was used to determine the prevalence of antibodies to s. bovis serotype 1 in healthy belgian racing pigeons. antibodies were demonstrated in 83 (= 37%) of 22 ...19938284963
molecular cloning and expression of two alpha-amylase genes from streptococcus bovis 148 in escherichia coli.the alpha-amylase genes of streptococcus bovis 148 were cloned in escherichia coli mc1061, using pbr322. the recombinant plasmids were classified into two groups on the basis of their restriction maps. southern blot analysis did not show homology between the two types of alpha-amylase genes, and the two alpha-amylase genes existed on the chromosomal dna of s. bovis 148. the enzymatic properties and n-terminal amino acid sequences of the two purified enzymes produced by the cloned e. coli strains ...19938285674
[regulation of enzymes of the first and last stage of lysine biosynthesis in streptococcus bovis and enterococcus faecium].regulation of aspartate kinase and diaminopimelate decarboxylase activities in streptococcus bovis and enterococcus faecium cell-free extracts was studied. the levels of synthesis of aspartate kinase and diaminopimelate decarboxylase in both microorganisms are growth-dependent. the synthesis of these enzymes is depressed by lysine, but the activity of aspartate kinase is induced by addition of this amino acid and threonine to the reaction system. meso-diaminopimelate dehydrogenase activity was n ...19938289839
recurrent infective endocarditis.infective endocarditis is a serious disease associated with high mortality. patients surviving recurrent bouts of infective endocarditis are reported infrequently. we report on a non-drug abuser patient who experienced seven episodes of infective endocarditis--the largest number reported to our knowledge in a single non-drug abuser patient.19938290417
acetohydroxy acid synthase and threonine deaminase activities, and the biosynthesis of isoleucine-leucine-valine in streptococcus bovis.acetohydroxy acid synthase (ahas) and threonine deaminase (td) activities were found in streptococcus bovis and shown to be involved in the biosynthesis of the branched chain amino acids isoleucine, leucine and valine. apparent lack of repression of ahas synthesis by the end-products and reduced sensitivity of s. bovis growth to analogues of the branched chain amino acids suggested that secretion of isoleucine, leucine and valine in the growth medium may be a consequence of the regulatory featur ...19938310179
use of modified rambach agar to differentiate streptococcus uberis from other mastitis streptococci.the medium of rambach was modified to permit differentiation of mastitis streptococci. a total of 377 streptococci isolated from bovine imi was used in the study. of the 159 strains identified as streptococcus uberis, 151 strains (94.9%) were beta-galactosidase-positive and yielded blue colonies on modified rambach agar. in comparison, streptococcus agalactiae, streptococcus dysgalactiae, enterococcus saccharolyticus, or enterococcus faecalis strains were negative for propylene glycol utilizatio ...19938326035
effect of amino acids on the heat production and growth efficiency of streptococcus bovis: balance of anabolic and catabolic rates.streptococcus bovis jb1 grew nearly twice as fast (0.9 versus 1.6 h-1) and had a 40% greater growth yield (18 versus 12.5 mg of protein per mmol of glucose) when an ammonia-based medium was supplemented with amino acids, but the glucose consumption rate (88 mumol mg of protein-1 h-1) and specific rate of heat production (2.1 mw/mg of protein) were unaffected. amino acid availability had little effect on the catabolic rate, but the specific heat decreased 40% (8.8 to 5.2 j/mg of protein). these g ...19938328799
the antimicrobial activity and beta-lactamase stability of cefpirome, a new fourth-generation cephalosporin in comparison with other agents.the antimicrobial activity of cefpirome was compared with amoxycillin/clavulanic acid, ampicillin/sulbactam, cefuroxime, ceftazidime, gentamicin and amikacin against 743 non-duplicate clinical isolates. mic50 and mic90 showed that the antibiotic was active against both gram-negative and gram-positive organisms. cefpirome was highly active against most of the enterobacteriaceae, including indole-positive proteus spp., aeromonas spp. (mic < or = 1 mg/l) and salmonella spp. (mic < or = 0.5 mg/l). n ...19938335498
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