the metabolism of carbon dioxide by streptococcus bovis. 196013846063
starch hydrolysis by strepto-coccus equinus.dunican, lawrence k. (cornell university, ithaca, n. y.) and harry w. seeley. starch hydrolysis by streptococcus equinus. j. bacteriol. 82:264-269. 1962.-in a study of starch hydrolysis by strains of streptococcus equinus, 52 isolates were obtained and their amylolytic abilities determined. it was found that all the strains could hydrolyze starch to some extent when grown in the presence of an easily fermentable carbohydrate, viz., glucose. without this carbohydrate the organisms did not hydroly ...196213888473
the serological grouping of three strains of streptococcus equinus. 196313960231
the intracellular alpha-galactodidase of a rumen strain of streptococcus bovis. 196313969023
the serological grouping of streptococcus equinus. 196213989375
temperature-sensitive dextransucrase synthesis by a lactobacillus.dunican, l. k. (cornell university, ithaca, new york), and h. w. seeley, jr. temperature-sensitive dextransucrase synthesis by a lactobacillus. j. bacteriol. 86:1079-1083. 1963.-dextran synthesis was found to be temperature-dependent in lactobacillus strain rwm-13. dextran was not formed above 37 c, although growth of cells occurred up to 42 c. logarithmically growing cells transferred from 30 c to 40 c ceased producing dextran while growth decreased nominally. an examination of the extracts of ...196314080775
microbiological assay for l-asparagine with a streptococcus bovis mutant. 196414153302
[studies on the growth and propagation of streptococcus bovis during continuous roentgen irradiation]. 196414176849
fructose-1,6-diphosphate requirement of streptococcal lactic dehydrogenases.the lactic dehydrogenase of a strain of streptococcus bovis specifically requires fructose-1,6-diphosphate for activity. phosphate or fructose-1-6-diphosphate prevents inactivation of the dehydrogenase, but phosphate and other compounds cannot be substituted for the fructose-1,6-diphosphate required for activity. lactic dehydrogenases of other species of streptococcus show a similar requirement for fructose-1,6-diphosphate.196414197565
purification and properties of the asparagine synthetase of streptococcus bovis. 196414213353
amino group formation and glutamate synthesis in streptococcus bovis.burchall, j. j. (university of illinois, urbana), r. a. niederman, and m. j. wolin. amino group formation and glutamate synthesis in streptococcus bovis. j. bacteriol. 88:1038-1044. 1964.-extracts of streptococcus bovis grown on nh(4) (+) as a nitrogen source contain a nicotinamide adenine dinucleotide phosphate (nadp)-linked glutamic dehydrogenase and are devoid of alanine dehydrogenase, other amino acid dehydrohygenases, and aspartase. a potential source of reduced nicotinamide adenine dinucle ...196414219016
normal intestinal flora of cattle fed high-roughage rations.maki, leroy r. (university of wyoming, laramie), and kay picard. normal intestinal flora of cattle fed high-roughage rations. j. bacteriol. 89:1244-1249. 1965.-intestinal bacteria were isolated from 15 cattle. approximately 600 isolates were studied, and their presence and numbers in the duodenum, ileum, cecum, and colon were noted. bacteria most frequently isolated from all parts of the intestinal tract included escherichia coli, streptococcus bovis, and species of bacillus. several groups of g ...196514292993
the cell-bound alpha-amylases of streptococcus bovis.1. the cell-bound alpha-amylase of streptococcus bovis has been isolated from other carbohydrases in the cell extract by chromatography on deae-cellulose. the enzyme has been compared with the extracellular alpha-amylase produced by this organism. 2. the two amylases had similar action patterns on amylose, the main product being maltotriose with smaller amounts of maltose and a little glucose. 3. the cell-bound amylase hydrolysed maltopentaose and maltohexaose at a similar rate to the hydrolysis ...196514346085
a transglucosylase of streptococcus bovis.1. a transglucosylase has been separated from the alpha-amylase of streptococcus bovis by chromatography of the cell extract on deae-cellulose. 2. the transglucosylase can synthesize higher maltodextrins from maltotriose, but maltose, isomaltose and panose do not function as donors. 3. iodine-staining polysaccharide may be synthesized from maltotriose provided that glucose is removed. synthesis from maltohexaose results in dextrins of sufficient chain length to stain with iodine, but again malto ...196514346086
influence of nitrogen source on growth of streptococcus bovis. 195914434753
species differentiation of group d streptococci.three hundred and fourteen strains of group d streptococci were studied by means of a number of tests. the majority of the strains were identified as streptococcus faecalis (83 strains), streptococcus faecium (131 strains), or streptococcus bovis (32 strains). several strains (47 or nearly 15%) either shared characteristics of two species or were completely atypical. s. faecalis and s. bovis were more easily identified than s. faecium, which is not sharply defined from the other species and coul ...196214483707
utilization of sulfur compounds by streptococcus bovis.prescott, j. m. (a. &. m. college of texas, college station). utilization of sulfur compounds by streptococcus bovis. j. bacteriol. 82:724-728. 1961.-two strains of streptococcus bovis utilize a variety of compounds as their only source of sulfur, yet exert a definite selectivity in their nutritional requirements for this element. among sulfur-containing amino acids and related compounds, cystine and cysteine support excellent growth, but cysteic acid and cysteine sulfinic acid do not; methionin ...196114488628
late infection of a total knee arthroplasty with streptococcus bovis in association with carcinoma of the large intestine.infection of a total knee arthroplasty with streptococcus bovis in a 76-year-old man that led to the diagnosis of a bowel carcinoma is reported. investigation revealed a malignancy in the ascending colon with extension into the adrenal gland. s bovis in conjunction with colonic neoplasia has been reported in several orthopedic conditions: vertebral osteomyelitis, discitis, lateral neck abscess, and osteomyelitis of the ileum. the relationship of s bovis to endocarditis, meningitis, brain abscess ...200314513461
infective endocarditis due to streptococcus bovis in a series of nonaddict patients: clinical and morphological characteristics of 20 cases and review of the literature.controversy frequently exists about the actual frequency of streptococcus bovis infective endocarditis (ie), its incidence of malignancy and its outcome. consequently, the characteristics of s bovis ie were examined in an unselected population of nondrug-addicted patients. the literature was also reviewed.200314532939
inhibition of listeria monocytogenes by bovicin hc5, a bacteriocin produced by streptococcus bovis hc5.cattle can be infected with listeria monocytogenes by consuming contaminated plant materials, soil or silage, and farmers have sought ways of preventing this contamination. recent work indicated that streptococcus bovis hc5 produced a bacteriocin (bovicin hc5) that could inhibit a variety of gram-positive bacteria, and we examined the ability of bovicin hc5 to inhibit 10 strains of l. monocytogenes that had been isolated from plant materials, soil, silage and infected cattle. growth experiments ...200314580975
[splenic abscess by streptococcus bovis. first case in spain and literature review]. 200314599404
a case of septicaemia, meningitis and pneumonia caused by streptococcus bovis type ii.we present a case of septicaemia, pneumonia and meningitis due to streptococcus bovis type-ii in a patient who had undergone a total hip prosthesis under general anaesthesia three weeks earlier. this organism is an uncommon human pathogen that sometimes causes bacteraemia and endocarditis and is usually connected with colon pathology and dental procedures. in the reported case, there were no risk factors for s. bovis infection except for the hip operation. s. bovis type ii sensitive to penicilli ...200314627189
molecular characteristics and transcription of the gene encoding a multifunctional alcohol dehydrogenase in relation to the deactivation of pyruvate formate-lyase in the ruminal bacterium streptococcus clarify the deactivation mechanism of pyruvate formate-lyase (pfl) and its role in the regulation of fermentation in streptococcus bovis, the molecular properties and genetic expression of multifunctional alcohol dehydrogenase (adhe) were investigated. s. bovis was found to have adhe, which was deduced to consist of 872 amino acids with a molecular mass of 97.4 kda. the adhe was shown to harbor three enzyme activities: (1) alcohol dehydrogenase, (2) coenzyme-a-linked acetaldehyde dehydrogenas ...200414676990
bovicin hj50, a novel lantibiotic produced by streptococcus bovis hj50.a bacteriocin-producing strain was isolated from raw milk and named streptococcus bovis hj50. like most bacteriocins produced by lactic acid bacteria, bovicin hj50 showed a narrow range of inhibiting activity. it was sensitive to trypsin, subtilisin and proteinase k. bovicin hj50 was extracted by n-propanol and purified by sp sepharose fast flow, followed by phenyl superose and sephadex g-50. treatment of micrococcus flavus ncib8166 with bovicin hj50 revealed potassium efflux from inside the cel ...200414702402
carcinogenic properties of proteins with pro-inflammatory activity from streptococcus infantarius (formerly s.bovis).several studies reported linkage between bacterial infections and carcinogenesis. streptococcus bovis was traditionally considered as a lower grade pathogen frequently involved in bacteremia and endocarditis. this bacterium became important in human health as it was shown that 25-80% of patients who presented a s.bovis bacteremia had also a colorectal tumor. moreover, in previous experiments, we demonstrated that s.bovis or s.bovis wall extracted antigens (wea) were able to promote carcinogenesi ...200414742316
effect of ph on the activity of bovicin hc5, a bacteriocin from streptococcus bovis hc5.the bacteriocin, bovicin hc5, catalyzed potassium efflux from streptococcus bovis jb1, and this activity was highly ph dependent. when the ph was near neutral, glucose-energized cells were not affected by bovicin hc5, but the intracellular steady-state concentration of potassium decreased at acidic ph values. the idea that ph was affecting bovicin hc5 binding was supported by the observation that acidic ph also enhanced the efflux of potassium from non-energized cells that had been loaded with p ...200414769462
[streptococcus bovis infectious endocarditis: clinical and epidemiological characteristics].this paper shows our experience concerning the study of streptococcus bovis infectious endocarditis (ei): 47 patients, with no prior history of iv drug abuse (ntd), who suffered ei caused by streptococcus bovis were excerpted from a case record of 1053 cases with diagnosis of ei defined in accordance with duke's hospital criteria. for each patient we considered age, sex, complications, echocardiographic findings, antibiotic therapy, eventual heart-surgery and final outcome of the disease. we the ...200314988666
[chronic cough as presentation of subacute bacterial endocarditis]. 200415043499
[streptococcus bovis septicemia and bifocal spondylodiscitis]. 200415043503
causative organisms of infective endocarditis according to host status.a prospective study of infective endocarditis (ie) was conducted between 1994 and 2000 in marseilles, france, and included 170 definite cases diagnosed with the use of modified duke criteria. classification of ie based on the aetiological agent was related to epidemiological characteristics, including age, gender and the nature of the injured valve. enterococci and streptococcus bovis were identified more frequently in older subjects (p 0.02), and s. bovis was also associated with mitral valve i ...200415059118
bacteremic streptococcus bovis infections at a university hospital, 1992-2001.the association of streptococcus bovis biotypes with types of clinical infection and underlying malignancies has rarely been reported in taiwan. the aim of this study was to characterize the clinical features and microbiological characteristics of patients with s. bovis bacteremia.200415083242
antimicrobial susceptibility patterns and macrolide resistance genes of viridans group streptococci from blood cultures in korea.our aim was to study the antimicrobial susceptibilities and macrolide resistance mechanisms of viridans group streptococci (vgs) in a korean tertiary hospital.200415117924
antimicrobial spectrum and activity of nvp pdf-713, a novel peptide deformylase inhibitor, tested against 1,837 recent gram-positive clinical isolates.continued emergence of antimicrobial resistances among gram-positive pathogens requires further development of compounds with novel modes of action. the peptide deformylase inhibitor nvp pdf-713 was tested against 1,837 recent strains of gram-positive organisms. all nvp pdf-713 mics were at < or = 4microg/ml except for 6 enterococci (0.3% of strains overall). nvp pdf-713 mic(90) results were: staphylococcus aureus, beta-haemolytic and viridans group streptococci and streptococcus bovis at 1 micr ...200415135503
resistance of rumen bacteria murein to bovine gastric lysozyme.lysozymes, enzymes mostly associated with defence against bacterial infections, are mureinolytic. ruminants have evolved a gastric c type lysozyme as a digestive enzyme, and profit from digestion of foregut bacteria, after most dietary components, including protein, have been fermented in the rumen. in this work we characterized the biological activities of bovine gastric secretions against membranes, purified murein and bacteria.200415137912
streptococcus bovis endocarditis and its association with chronic liver disease: an underestimated risk factor.clinical and epidemiological characteristics of streptococcus bovis endocarditis were prospectively studied among 199 patients with definite endocarditis. thirty patients (15.1%) had s. bovis endocarditis. compared with patients with non-s. bovis endocarditis, these 30 patients were older (mean age, 58.6+/-12.4 years vs. 46.0+/-17.0 years; p<.001) and had higher rates of bivalvular involvement (43.3% vs. 7.7%; p<.001), embolism (73.3% vs. 40.2%; p=.002), and diskitis (23.3% vs. 0.6% p<.001). in ...200415156477
non-life-threatening sepsis: report of two cases.streptococcus bovis is one of the nonenterococcal species included among the streptococci group d. it is part of the normal bowel flora in humans and animals, but it is also responsible for infectious diseases (10-15% of all cases of bacterial endocarditis). many cases of bacteremia and metastatic abscesses (spleen, liver, soft tissues, bone, meninges, endocardium) caused by s. bovis were reported as associated with digestive tract diseases, mainly colonic disease, and, in particular colonic neo ...200415166750
[fever, malaise and new onset mitral valve insufficiency. subacute streptococcus bovis mitral valve endocarditis ].a 62-year-old patient with low grade fever, fatigue, arthralgia and newly discovered mitral regurgitation was diagnosed with subacute endocarditis. streptococcus bovis grew from all six blood culture bottles. streptococcus bovis is known to be associated with gastrointestinal neoplasias. therefore a colonoscopy was performed and two polyps were removed. histological analysis revealed a tubulovillous adenoma and a serrated adenoma. colonoscopy is mandatory for all patients with streptococcus bovi ...200415185488
new group d streptococcal species.the heterogeneity of group d streptococci led to the identification of various biotypes of streptococcus equinus and streptococcus bovis and to the description of new species. the objective of the present study was to improve the phenotypic delineation between species and to clarify their respective phylogenetic position.200415232206
effects of the overexpression of fructose-1,6-bisphosphate aldolase on fermentation pattern and transcription of the genes encoding lactate dehydrogenase and pyruvate formate-lyase in a ruminal bacterium, streptococcus bovis.whether fructose-1,6-bisphosphate (fbp) triggers the transcriptional regulation of the gene expression of lactate dehydrogenase (ldh) and pyruvate formate-lyase (pfl) in streptococcus bovis was examined by constructing a recombinant strain that overexpresses fbp aldolase (fba). when the recombinant strain was grown on glucose, intracellular fbp was much lower as compared to the parent strain, whereas dihydroxyacetone phosphate (dhap) and d-glyceraldehyde-3-phosphate (gap) were slightly higher. i ...200415248145
association of streptococcus bovis bacteremia with colonic neoplasia and extracolonic malignancy.the association between streptococcus bovis bacteremia and colonic neoplasia is well described; however, the relationship between s bovis and neoplasia outside the colon has not been well evaluated.200415249410
improved survival in experimental sepsis with an orally administered inhibitor of apoptosis.the pathophysiology of sepsis involves excessive lymphocyte apoptosis, which correlates with adverse outcomes, and disordered cytokine production, which may promote host injury. as the protease inhibitor (pi) class of antiretroviral agents is known to prevent apoptosis in vitro, we evaluated their effect on survival, lymphocyte apoptosis, and consequent cytokine production in mice with sepsis induced by cecal ligation and perforation. mice pretreated with pis have improved survival (67%; p<0.000 ...200415284218
direct production of ethanol from raw corn starch via fermentation by use of a novel surface-engineered yeast strain codisplaying glucoamylase and and efficient production of ethanol by fermentation from raw corn starch was achieved by using the yeast saccharomyces cerevisiae codisplaying rhizopus oryzae glucoamylase and streptococcus bovis alpha-amylase by using the c-terminal-half region of alpha-agglutinin and the flocculation functional domain of flo1p as the respective anchor proteins. in 72-h fermentation, this strain produced 61.8 g of ethanol/liter, with 86.5% of theoretical yield from raw corn starch.200415294847
influence of dipeptidyl peptidase inhibitors on growth, peptidase activity, and ammonia production by ruminal microorganisms.the aim was to investigate known and potential new inhibitiors of dipeptidyl peptidases (dpp) for their effects on ruminal microorganisms. gly-phe diazomethylketone (gpd), ala-ala chloromethylketone (aac), benserazide (dl-serine 2-(2,3,4- trihydroxybenzyl) hydrazide), and diprotin a (ile-pro-ile) inhibited dpp activities of prevotella albensis, p. ruminicola, p. bryantii, p. brevis, and mixed ruminal microorganisms, though incompletely and, except for diprotin a, without absolute specificity for ...200415297916
molecular characteristics of phosphoenolpyruvate: mannose phosphotransferase system in streptococcus elucidate the regulatory mechanism of catabolite control in streptococcus bovis, we investigated the molecular properties and gene expression of the mannose-specific phosphoenolpyruvate (pep)-dependent sugar: phosphotransferase system (pts). the mannose pts gene cluster (man) was found to comprise a gene encoding enzyme (e) ii ab (manl) and genes encoding eiic (manm), eiid (mann), and a putative regulator (mano). the gene cluster (man operon) was transcribed from one transcriptional start sit ...200415297922
successful treatment of four-valve native endocarditis caused by streptococcus bovis. 200415336831
molecular characterization of ccpa and involvement of this protein in transcriptional regulation of lactate dehydrogenase and pyruvate formate-lyase in the ruminal bacterium streptococcus bovis.a ccpa gene that encodes global catabolite control protein a (ccpa) in streptococcus bovis was identified and characterized, and the involvement of ccpa in transcriptional control of a gene (ldh) encoding lactate dehydrogenase (ldh) and a gene (pfl) encoding pyruvate formate-lyase (pfl) was examined. the ccpa gene was shown to be transcribed as a monocistronic operon. a catabolite-responsive element (cre) was found in the promoter region of ccpa, suggesting that ccpa transcription in s. bovis is ...200415345406
use of community genome arrays (cgas) to assess the effects of acacia angustissima on rumen ecology.this research developed a community genome array (cga) to assess the effects of acacia angustissima on rumen microbiology. a. angustissima produces non-protein amino acids as well as tannins, which may be toxic to animals, and cga was used to assess the effects of this plant on the ecology of the rumen. cgas were developed using a 7.5 cmx2.5 cm nylon membrane format that included up to 96 bacterial genomes. it was possible to separately hybridize large numbers of membranes at once using this min ...200415347749
characterization of streptococcus bovis from the rumen of the dromedary camel and rusa deer.isolation and characterization of streptococcus bovis from the dromedary camel and rusa deer.200415355536
vasculitic purpura with antineutrophil cytoplasmic antibody-positive acute renal failure in a patient with streptococcus bovis case and neisseria subflava bacteremia and subacute endocarditis.subacute bacterial endocarditis is frequently associated with extracardiac manifestations and renal failure. clinical variety of endocarditis manifestation is wide and has the potential to mimic vasculitis. whereas streptococcus bovis is often isolated and associated with colonic tumors, neisseriaceae are rarely found. an association of subacute bacterial endocarditis and antineutrophil cytoplasmic antibodies has been described. we report on a 62-year-old man who was admitted to our hospital wit ...200415356972
protozoa involved in butyric rather than lactic fermentative pattern during latent acidosis in sheep.we used six ruminally cannulated texel wethers to study the relative role of protozoa and lactate-metabolizing bacteria in ruminal fermentative patterns during an induced latent acidosis. the sheep were fed an alfalfa hay diet (h) and latent acidosis was induced, following a short transition period of one week, with a grain-rich acidotic diet (w, 60% wheat + 40% alfalfa hay). ruminal ph, ruminal volatile fatty acids (vfa), lactate and nh3 concentrations, protozoa and lactate-utilizing bacterial ...200415460159
molecular characterization and transcription of the luxs gene that encodes luxs autoinducer 2 synthase in streptococcus bovis.presence of the luxs gene that encodes luxs autoinducer 2 (ai-2) synthase in streptococcus bovis was demonstrated, and the molecular properties and transcription of the gene were examined. the s. bovis luxs was transcribed in a monocistronic fashion. intracellular luxs-mrna increased sharply during the initial exponential growth, and decreased abruptly after the middle exponential phase. the large drop in luxs transcription began before the glucose supply to cells decreased or the growth rate de ...200415486712
streptococcus bovis septic shock due to contaminated transfused platelets.although most physicians and the public are primarily concerned about the risk of transmitting human immunodeficiency virus (hiv) or hepatitis virus during a platelet transfusion, bacterial contamination is actually the most common infectious complication. unlike red blood cells, platelets are stored at room temperature (20-24 degrees c), which raises the risk of bacterial proliferation. the risk of bacterial sepsis is 2.5-fold higher for each unit of transfused platelets compared to each unit o ...200415495249
the influence of endoscopic procedures upon the contamination of helicobacter pylori cultures.among the various diagnostic methods for the detection of helicobacter pylori infection, histological examination and microbiological processing of gastric biopsy samples are assumed to be the gold standard techniques.200415543382
chronic liver disease and streptococcus bovis endocarditis. 200415546102
ocular symptoms and signs as presenting features of endocarditis caused by streptococcus bovis ii. 200415566065
coaggregation profiles of the microflora from root surface caries lesions.bacterial coaggregation reactions between different species and the auto aggregation of the same species are associated with the initiation and development of dental plaque and biofilms. as no such data is available on isolates from root caries lesions, we evaluated, by a visual, semi-quantitative scoring system and a spectrophotometric, quantitative assay, the coaggregation of 22 different wild-type microbial species comprising ten bacterial genera and a single candida spp. the quantitative coa ...200515598414
emergence of endocarditis due to group d streptococci: findings derived from the merged database of the international collaboration on endocarditis.the aim of the present study was to compare the epidemiological and clinical characteristics of streptococcus bovis endocarditis with those of endocarditis caused by oral streptococci, using data obtained from a large international database of uniformly defined cases of infective endocarditis. s. bovis, a well-known cause of infective endocarditis, remains the common name used to designate group d nonenterococcal streptococci. in some countries, the frequency of s. bovis endocarditis has increas ...200515660254
a retained intravascular medical device and streptococcus bovis infection, providing early diagnosis of an occult malignancy. 200515667921
in vitro activity of telithromycin against viridans group streptococci and streptococcus bovis isolated from blood: antimicrobial susceptibility patterns in different groups of species.the in vitro activities of penicillin, erythromycin, clindamycin, and telithromycin were determined against 155 viridans group streptococci (vgs) and 18 streptococcus bovis blood isolates. heterogeneity in the susceptibility patterns and macrolide resistance phenotypes and genotypes in the different groups of vgs was detected. we found seven telithromycin-resistant s. bovis isolates all harboring the erm(b) gene.200515673778
effect of the microbial feed additive saccharomyces cerevisiae cncm i-1077 on protein and peptide degrading activities of rumen bacteria grown in vitro.we investigated the potential of the ruminant feed additive saccharomyces cerevisiae cncm i-1077 on protein and peptide degrading activities of the rumen bacterial species prevotella albensis m384, streptococcus bovis 20480, and butyrivibrio fibrisolvens 3071 grown in vitro. alive or heat-killed yeast cells were added to bacterial cultures in a complex casein-glucose medium. after incubation of the cultures at 39 degrees c under o(2)-free co(2), peptidase activities were determined in the absenc ...200515702254
daptomycin tested against 915 bloodstream isolates of viridans group streptococci (eight species) and streptococcus evaluate the activity of daptomycin tested against numerous species of viridans group streptococci and streptococcus bovis, which are associated with wound infections, sepsis, cellulitis, endocarditis, abscesses and dental caries. the incidence of penicillin-resistant (non-susceptible) and mls(b)-resistant strains among viridans group streptococci often varies by species.200515722390
[multilobular liver abscess due to streptococcus bovis]. 200415738851
genetic basis of antibiotic resistance in clinical isolates of streptococcus gallolyticus (streptococcus bovis).among 128 streptococcus gallolyticus (streptococcus bovis) isolates, 77.7% were resistant to tetracyclines and contained tet(m) and/or tet(l) and/or tet(o). a total of 59.4% had macrolide resistance and contained erm(b) and, rarely, mef(a). among the one-third of isolates highly resistant to kanamycin and streptomycin, most harbored apha3 and aad-6 genes.200515793162
[bacterially conditioned thromboembolism in dairy cows--a retrospective study of 31 necropsy cases with special consideration of the causative complex].a study of 340 necropsied dairy cattle from northern bavaria resulted in 31 animals (9%) showing evidence of pyemic thromboembolism. the most frequent pathomorphologic lesions consisted in endocarditis valvularis thromboticans of the tricuspid and/or mitral valve (21), embolic pneumonia (26), nephritis (13) and renal infarction (12). the most common isolate found in bacteriologic culture was arcanobacterium pyogenes in 26 of 31 cases, followed by staphylococcus aureus (2), mannheimia haemolytica ...200515803759
mitral valve endocarditis after dental prophylaxis in a dog. 200515822575
bacteremia due to streptococcus gallolyticus, or the perils of revised nomenclature in bacteriology. 200515825011
recurrent klebsiella pneumoniae liver abscess in a diabetic patient followed by streptococcus bovis endocarditis--occult colon tumor plays an important role.klebsiella pneumoniae is the leading cause of liver abscess in diabetic patients in taiwan. we report the case of a diabetic patient with a history of four episodes of k. pneumoniae liver abscess within 3 years. the patient later developed streptococcus bovis bacteremia originating from a colon tumor with complications of endocarditis, osteomyelitis, and silent splenic abscess. occult colon tumor may have played an important role in our case, with recurrent infection arising from colonizers of t ...200515858282
a blood donor with bacteraemia. 200515866315
clinical characteristics and significance of streptococcus salivarius bacteremia and streptococcus bovis bacteremia: a prospective 16-year study.the aim of this study was to determine the clinical significance of streptococcus salivarius isolates recovered from blood cultures and compare them with isolates of streptococcus bovis biotypes i and ii. seventeen of the 52 (32%) s. salivarius isolates recovered were considered clinically significant, compared with 62 of the 64 (97%) s. bovis isolates (p<0.0001). bacteremia caused by s. salivarius occurred mostly in patients who showed relevant disruption of the mucous membranes and/or serious ...200515902530
hiv infection associated with strongyloides stercoralis colitis resulting in streptococcus bovis bacteraemia and meningitis.we report the case of an hiv infected patient with streptococcus bovis bacteraemia and meningitis associated with gastrointestinal strongyloides stercoralis infection. to our knowledge, this has been reported once previously and serves as a reminder to actively exclude asymptomatic s stercoralis infection in hiv infected individuals presenting with bacteraemia.200515923302
molecular study on cloned endoglucanase gene from rumen endoglucanase gene was subcloned from anaerobic rumen bacterium ruminococcus flavefaciens strain 17. to express endoglucanase gene in escherichia coli and streptococcus bovis jb1, an endoglucanase gene fragment was inserted into pva838-based shuttle vectors. removal of endoglucanase gene promoter and expression of endoglucanase by promoter of s. bovis jb1 alpha-amylase gene (pacmcs) was also achieved. survival of constructs pvacmci, ptacmc and pacmcs, which carry endoglucanase gene, and stabi ...200415925902
molecular monitoring and characterization of the faecal microbiota of healthy dogs during fructan supplementation.the large intestine of dogs contains a complex microbial ecosystem with predominance of streptococci, bifidobacteria, lactobacilli, bacteroides and clostridium. generally, this predominant microbiota in dogs is relatively stable in time but much less is known about its taxonomic composition. moreover, almost no studies have been conducted to investigate this stability of the faecal microbial population in dogs upon prebiotic administration. the objective of the present study was to monitor possi ...200515979820
risk of embolism and death in infective endocarditis: prognostic value of echocardiography: a prospective multicenter study.the incidence of embolic events (ee) and death is still high in patients with infective endocarditis (ie), and data about predictors of these 2 major complications are conflicting. moreover, the exact role of echocardiography in risk stratification is not well defined.200515983252
[accidental fall and word finding problems in heart valve disease].abscesses of the spleen are rare and, if untreated, lead to death. the usual mode of development is by hematogenous spread of infection. treatment options are splenectomy, percutaneous drainage and in selected cases an antibiotic therapy. we report a case of a splenic abscess due to streptococcus bovis treated with antibiotics only.200516033028
gross abnormalities, bacteriology and histological lesions of uteri of dairy cows failing to conceive or maintain describe the gross pathology, bacteriology and histopathology of the reproductive tracts of dairy cows that failed to conceive or maintain pregnancy.200516044186
active infectious endocarditis: postoperative outcome.many changes have occurred in the natural history and the management of active infectious endocarditis (aie) in recent years. therefore, the records of patients admitted in a tertiary care specialized hospital presenting with the duke criteria were reviewed.200516085246
viridans group streptococci: an underestimated cause of spontaneous bacterial peritonitis in cirrhotic patients with ascites.the objective of the study was to examine the characteristics of spontaneous bacterial peritonitis (sbp) caused by streptococci, in particular viridans group streptococci (vgs), and to investigate a potential association between the long-term administration of norfloxacin and high-level resistance to fluoroquinolones in these organisms.200516093870
display of active enzymes on the cell surface of escherichia coli using pgsa anchor protein and their application to bioconversion.we have developed a novel escherichia coli cell surface display system by employing pgsa as an anchoring motif. in our display system, c-terminal fusion to pgsa anchor protein from bacillus subtilis was used. the enzymes selected for display were alpha-amylase (amya) from streptococcus bovis 148 and lipase b (calb) from candida antarctica. the molecular mass values of amya and calb are approximately 77 and 34 kda, respectively. the enzymes were displayed on the surface as a fusion protein with a ...200616133338
[endocarditis due to streptococcus bovis and hepatic disease]. 200516143090
molecular epidemiology of streptococcus bovis causing endocarditis and bacteraemia in italian patients.streptococcus bovis is being recognised increasingly as a cause of infective endocarditis, and has also been associated with underlying gastrointestinal malignancy. this study evaluated the molecular epidemiology of s. bovis isolates responsible for endocarditis or bacteraemia in italian patients between january 1990 and august 2003. s. bovis isolates were classified on the basis of their biochemical profiles, antimicrobial susceptibilities and genotypes. of 25 isolates studied, 20 were s. bovis ...200516153255
characterization of culturable anaerobic bacteria from the forestomach of an eastern grey kangaroo, macropus determine the culturable biodiversity of anaerobic bacteria isolated from the forestomach contents of an eastern grey kangaroo, macropus giganteus, using phenotypic characterization and 16s rdna sequence analysis.200516162139
cerebral ischemia caused by streptococcus bovis aortic endocarditis: case report.cerebral ischemic processes associated with infective endocarditis caused by streptococcus bovis are rare; only 2 cases having been reported. here we report a case of a 50-year-old man with s. bovis endocarditis who presented signs of frontal, parietal and occipital lobe cerebral ischemia. this is the first case reported in which the presence of hemianopsia preceded the endocarditis diagnosis. initially, the clinical manifestations suggested a systemic vasculitis. later, vegetating lesions were ...200516172722
the erm(t) gene is flanked by is1216v in inducible erythromycin-resistant streptococcus gallolyticus subsp. pasteurianus.we investigated the sequence and the genetic context of the erm(t) gene in six inducible erythromycin-resistant streptococcus gallolyticus subsp. pasteurianus (formerly s. bovis biotype ii.2) isolates. in all isolates, the erm(t) genes were flanked by two is1216v-like elements with the same polarity and were found to be inserted in the chromosome.200516189118
efficient production of l-(+)-lactic acid from raw starch by streptococcus bovis 148.streptococcus bovis 148 was found to produce l-(+)-lactic acid directly from soluble and raw starch substrates at ph 6.0. productivity was highest at 37 degrees c, with 14.7 g/l lactic acid produced from 20 g/l raw starch. the yield and optical purity of l-lactic acid were 0.88 and 95.6%, respectively.200416233654
observations on salpingitis, peritonitis and salpingoperitonitis in a layer breeder flock.a flock of 13,951 hens and 1379 cockerels was monitored from 26 to 58 weeks of age for the complex of salpingitis, peritonitis and salpingoperitonitis (sps). two hundred and forty-three hens (78 per cent of the hens that died) were examined postmortem, and sps was recognised by gross examination for inflammatory exudate, in the body cavity or oviduct in 111 (46 per cent) of them. salpingoperitonitis was the most common form, followed by salpingitis and then peritonitis. there were acute and chro ...200516272543
[update on infectious endocarditis].although one of the oldest known cardiac disease, infectious endocarditis (ie) remains a subject of constant change from epidemiological, diagnostic and therapeutic points of view. in the epidemiological field, the main feature is the increasing incidence of ie due to streptococcus bovis. representing a quarter of cases in france, this type of ie is particularly frequent in the elderly and underlying colonic disease should be investigated. in the diagnostic field, the progress of methods of micr ...200516294545
ability of the heparan sulfate proteoglycan syndecan-1 to participate in bacterial translocation across the intestinal epithelial barrier.although hundreds of microbial species reside in the human intestinal tract, comparatively few (e.g., escherichia coli and other enterobacteria, enterococcus faecalis, etc.) are typically associated with systemic infection in postsurgical, shock, and trauma patients. syndecan-1 is the predominant cell surface heparan sulfate proteoglycan expressed on epithelia, and there is substantial evidence that heparan sulfate participates in interactions of a variety of frankly pathogenic microbes with mam ...200516317389
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
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
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
effects of sainfoin (onobrychis viciifolia scop.) condensed tannins on growth and proteolysis by four strains of ruminal bacteria.sainfoin leaf condensed tannins inhibited growth and protease activity in butyrivibrio fibrisolvens a38 and streptococcus bovis 45s1 but had little effect on prevotella ruminicola b(1)4 or ruminobacter amylophilus wp225. tannins bound to cell coat polymers in all strains. morphological changes in b. fibrisolvens and s. bovis implicated the cell wall as a target of tannin toxicity.199416349244
substrate preference in a strain of megasphaera elsdenii, a ruminal bacterium, and its implications in propionate production and growth competition.the niah 1102 strain of megasphaera elsdenii utilized lactate in preference to glucose when the two substrates were present. even when lactate was supplied to cells fermenting glucose, the cells switched substrate utilization from glucose to lactate and did not utilize glucose until lactate decreased to a low concentration (1 to 2 mm). since substrate utilization was shifted gradually without intermittence, typical diauxic growth was not seen. the cyclic amp content did not rise markedly with th ...199416349276
abomasal bacteria produce an inhibitor of gastrin secretion in vitro.previously, proliferating microflora transferred with abomasal nematodes, were suspected to be the source of the gastrin inhibitor in some parasite excretory/secretory products. aerobic cultures in hbss of abomasal fluid from uninfected sheep became inhibitory during the static growth phase, unless antibiotics were present. basal gastrin secretion was reduced by up to 90%. rumen fluid and incubates and medium in which streptococcus bovis and ovine rumen actinomycete spp. had been grown also cont ...200616352323
extracellular metabolomics: a metabolic footprinting approach to assess fiber degradation in complex media.this work reports the implementation and optimization of a method for high-throughput analysis of metabolites produced by the breakdown of natural polysaccharides by microorganisms. our simple protocol enables simultaneous separation and quantification of more than 40 different sugars and sugar derivatives, in addition to several organic acids in complex media, using 50-mul samples and a standard gas chromatography-mass spectrometry platform that was fully optimized for this purpose. as an imple ...200616356465
display of alpha-amylase on the surface of lactobacillus casei cells by use of the pgsa anchor protein, and production of lactic acid from starch.we developed a new cell surface engineering system based on the pgsa anchor protein from bacillus subtilis. in this system, the n terminus of the target protein was fused to the pgsa protein and the resulting fusion protein was expressed on the cell surface. using this new system, we constructed a novel starch-degrading strain of lactobacillus casei by genetically displaying alpha-amylase from the streptococcus bovis strain 148 with a flag peptide tag (amyaf). localization of the pgsa-amya-flag ...200616391053
factors affecting the activity of bovicin hc5, a bacteriocin from streptococcus bovis hc5: release, stability and binding to target determine the factors affecting the release, stability and binding of bovicin hc5 to sensitive bacteria.200616405697
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