Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| interfering alpha-streptococci as a protection against recurrent streptococcal pharyngotonsillitis. | 1992 | 1456123 | |
| alpha-streptococci-inhibiting beta-streptococci group a in treatment of recurrent streptococcal tonsillitis. | 1992 | 1456127 | |
| endocarditis on a left atrial myxoma. | a 55-year-old woman presented with fever and malaise. three blood cultures were positive for streptococcus sanguis. a diagnosis of endocarditis was made and the patient was treated with intravenous penicillin and gentamicin. endocardiography revealed a large left atrial tumour. at operation a myxoma covered by deposits of fibrin was excised. microscopy revealed massive infiltrates of neutrophils and remnants of bacteria, indicating that this myxoma was a nest for infection. | 1992 | 1464350 |
| effects of food preservatives on growth and metabolism of plaque bacteria in vitro and in vivo. | the aims of the present study were to assess the consumption of food preservatives during the last decades, and to study the effect of the preservatives, sorbic and benzoic acid, on growth and glycolysis of oral bacteria in vitro, and on acid formation by dental plaque in vivo. five consumption reports from the central bureau of statistics of norway were used to estimate alterations in consumption of staple food containing the two preservatives. a modified broth dilution method was used to deter ... | 1992 | 1465573 |
| noncariogenicity of erythritol as a substrate. | erythritol is a sugar alcohol produced by aureobasidium sp. from glucose. it is 75-80% as sweet as sucrose and is also nonhygroscopic. the aim of this study was to evaluate this sugar substitute from a cariological point of view. erythritol was neither utilized as a substrate for the lactic acid production nor for plaque formation of mutans streptococci (serotypes a-h) and certain oral microorganisms. it was not utilized for water-insoluble glucan synthesis or cellular adherence by glucosyltrans ... | 1992 | 1468100 |
| streptococcal pharyngitis and epiglottitis in a newborn infant. | we describe a newborn infant with streptococcus sanguis septicaemia and concomitant upper airway obstruction due to epiglottitis and pharyngitis. this rare infection of the supraglottic region was treated with endotracheal intubation and antibiotics. full recovery occurred within 4 days. | 1992 | 1473539 |
| enzyme-linked immunosorbent assay for the detection of antibodies to exocellular proteins of staphylococcus aureus in bone infection. | an enzyme-linked immunosorbent assay (elisa) was developed for measurement of the antibody response to exocellular protein antigens of staphylococcus aureus. the wells of a microtitre plate were coated with the exocellular proteins present in the tryptic soya broth growth medium from a stationary phase culture of a bone infection strain of s. aureus. the wells were then reacted sequentially with patient sera, protein a-peroxidase conjugate and chromogenic substrate. serum from patients with s. a ... | 1992 | 1478482 |
| the endodontic microflora revisited. | the microbial flora of 35 dental root canals were examined, taking care to maintain the viability of obligate anaerobes which accounted for 45% of total isolations, while streptococcal species accounted for 24% of the total species isolated. individual root canals yielded a maximum of eight bacterial species. a total of 40 different species was isolated of which the most prevalent were the facultative anaerobe streptococcus sanguis and the obligate anaerobe, peptostreptococcus micros (both in 23 ... | 1992 | 1479923 |
| physico-chemical and structural properties of the surfaces of peptostreptococcus micros and streptococcus mitis as compared to those of mutans streptococci, streptococcus sanguis and streptococcus salivarius. | the surface properties of nine streptococcus mitis and four peptostreptococcus micros strains from the oral cavity were examined and compared with a large group of oral streptococci. zeta potential and contact angle measurements were employed to determine physico-chemical cell surface properties. in addition, elemental surface concentration ratios were obtained via x-ray photoelectron spectroscopy, and surface structures were examined with transmission electron microscopy. the s. mitis and p. mi ... | 1992 | 1487734 |
| [a case report of isolated tricuspid valve endocarditis in a non-addicted adult person without underlying cardiac disease]. | we report a rare case of isolated tricuspid valve endocarditis. a 46-year-old man who was non-addicted, non-alcoholic and had no underlying cardiac disease was admitted to our hospital for persistent pyrexia. appropriate intravenous antibiotics therapy was unable to control the repeated infection and destruction of his tricuspid valve progressed. the patient was referred to our surgical division where on intraoperative inspection, tricuspid valve endocarditis was found to involve the entire ante ... | 1992 | 1491211 |
| macrophage response to bacteria: induction of marked secretory and cellular activities by lipoteichoic acids. | lipoteichoic acids (ltas) from various bacterial species, including staphylococcus aureus, streptococcus pyogenes, streptococcus pneumoniae, enterococcus faecalis, and listeria monocytogenes, were examined for the ability to induce secretory and cellular responses in a pure population of bone marrow-derived mononuclear phagocytes. some of the highly purified ltas, in particular ltas from bacillus subtilis, s. pyogenes, e. faecalis, and enterococcus hirae, were able to affect each of the macropha ... | 1992 | 1500175 |
| mobilization and location of the genetic determinant of chloramphenicol resistance from lactobacillus plantarum catc2r. | the mobilization of a nonconjugative plasmid (pcat) that mediates chloramphenicol resistance in lactobacillus plantarum catc2r was achieved by comobilization with the conjugative plasmid pam beta 1. the conjugation studies confirmed that the 8.5-kb pcat in l. plantarum catc2r contains the gene responsible for chloramphenicol resistance and that the plasmid has several unique restriction sites which make it useful for genetic studies in carnobacterium spp. cloning studies showed that the gene res ... | 1992 | 1513874 |
| the influence of morphological variation on candida albicans adhesion to denture acrylic in vitro. | using denture acrylic pieces coated with either whole human stimulated saliva or oral streptococci, the binding ability of three different candida albicans strains was investigated. the c. albicans strains include a clinical isolate with the commonly observed, smooth, round colonial morphology (strain 613p), a morphological variant spontaneously derived from the clinical isolate strain 613p (strain 613m1bk) and a clinical isolate from an oral lesion that was also a morphological variant upon pri ... | 1992 | 1514934 |
| inhibition of microbial adherence and growth by various glass ionomers in vitro. | this study measured the in vitro inhibition of growth and adherence of five oral bacteria by glass-ionomer materials. disks were prepared from two cavity liners and four restorative class materials, by use of teflon plates with circular wells, five mm wide and two mm deep. the bacterial species tested included: a. viscosus, s. mitis, s. mutans, l. casei, and s. sanguis. growth inhibition studies were performed by the spreading of 0.1 ml of standardized inocula over agar plates produced with sele ... | 1992 | 1521678 |
| enumeration of subgingival species on primary isolation plates using colony lifts. | this study evaluated the feasibility of using a colony lift method and dna probes to enumerate bacterial species cultured on primary isolation plates. fourteen digoxigenin-labeled whole chromosomal dna probes representing 12 subgingival species were validated by hybridization with colony lifts prepared from 249 reference strains of 51 species grown on trypticase soy agar plates supplemented with 5% sheep blood. colonies of reference strains were lifted onto nytran filters from plates and treated ... | 1992 | 1528619 |
| isolation and properties of the capnocytophaga ochracea bacteriocin. | a bacteriocin from a subgingival plaque isolate of capnocytophaga ochracea was purified and characterized. it was isolated from cell extract and had a molecular weight of 100,000. streptococcus sanguis, streptococcus mitis, streptococcus mutans and propionibacterium acnes were susceptible to the bacteriocin. | 1992 | 1528638 |
| induction of a putative laminin-binding protein of streptococcus gordonii in human infective endocarditis. | there is evidence to suggest that the virulence of streptococcus strains in infective endocarditis might be due to the expression of binding sites for the extracellular matrix proteins of damaged valves. in this communication, we draw attention to one laminin-binding protein from a strain of streptococcus gordonii isolated from a patient with human endocarditis. this 145-kda protein was found on the cell wall of the bacterium. the level of expression of this binding protein might be regulated by ... | 1992 | 1530927 |
| noncariogenicity of maltitol in specific pathogen-free rats infected with mutans streptococci. | the effect of maltitol on caries development was examined in an experimental caries system employing specific pathogen-free (spf) sprague-dawley rats. fourteen strains of oral streptococci, including mutans streptococci, did not utilize the maltitol nor produce sufficient acid to demineralize tooth enamel. furthermore, maltitol did not serve as a substrate for glucosyltransferases of either streptococcus mutans mt8148r or streptococcus sobrinus 6715 to synthesize water-insoluble glucan. maltitol ... | 1992 | 1533175 |
| identification of a gene, rgg, which regulates expression of glucosyltransferase and influences the spp phenotype of streptococcus gordonii challis. | streptococcus gordonii challis was previously shown to give rise to phase variants expressing high (spp+) or low (spp-) levels of extracellular glucosyltransferase (gtf) activity. here, shotgun cloning of an s. gordonii spp+ chromosomal digest resulted in a chimeric plasmid (pam5010) able to complement the spp- phenotype. in addition, introduction of pam5010 into an spp+ strain resulted in a 10-fold increase in gtf expression. deletion analysis of pam5010 identified a 1.2-kb dna segment which ex ... | 1992 | 1534326 |
| streptococcal-related antigens stimulate production of il6 and interferon-gamma by t cells from patients with behcet's disease. | greater attention has been recently paid to the role of certain strains of streptococcus as an etiologic agent of behçet's disease, in which t cell abnormalities are considered to be involved. we therefore examined whether t cells from patients with behçet's disease might to be stimulated by streptococcus sanguis-related antigen (rre kth-1 antigens). t cells from 17 patients with behcet's disease, but not those from 13 healthy individuals or from 13 patients with other rheumatic diseases, were s ... | 1992 | 1544169 |
| recurrent meningitis in a child with inner ear dysplasia. | 1992 | 1565564 | |
| retention of streptococci to defined solid surfaces in the presence of saliva secretions. | the initial surface retention of streptococcus sanguis (g9b and atcc 10556) and streptococcus salivarius (atcc 9758 and atcc 13419) was examined using a well defined flow cell system. the microorganisms, known to be recovered from hard vs. soft tissue surfaces, respectively, were suspended in either ringer solution, human parotid saliva (hps), human submandibular and sublingual saliva (hsmsl), or mixed saliva. microbial retention was evaluated on germanium prisms of low (20-25 mnm-1) and medium ... | 1992 | 1574683 |
| multibacterial artificial plaque. a model for studying carious process. | a multibacterial artificial plaque was established in vitro on enamel slabs incubated in mixed culture of streptococcus sanguis, streptococcus mutans (serotype c), streptococcus salivarius, lactobacillus casei and actinomyces viscosus. typical structure same as natural plaque was seen under microscope. the caries-like lesion produced under the plaque was observed in enamel sections. the lesion was similar in appearance to natural ones under optic and scanning electron microscopes. the acids prod ... | 1992 | 1576866 |
| multiple adhesins of streptococci. | 1992 | 1587582 | |
| bioassay for glycopeptides. | 1992 | 1592703 | |
| modulation of human neutrophil adherence by oral bacteria. | polymorphonuclear neutrophils (pmns) comprise over 90 per cent of leukocytes in the oral cavity. although these phagocytic cells have primary defence roles in the gingiva, their stimulation by micro-organisms may also cause substantial tissue damage due to the release of lysosomal enzymes and oxygen radicals. adherence of pmns to the endothelium and their subsequent diapedesis and egress to areas of infection are considered early vital events in the inflammatory process. in this study, oral bact ... | 1992 | 1605750 |
| ph regulation by streptococcus mutans. | the intracellular ph (phi) optimum for glycolysis in streptococcus mutans ingbritt was determined to be 7.0 by use of the ionophore gramicidin for manipulation of phi. glycolytic activity decreased to zero as the phi was lowered from 7.0 to 5.0. in contrast, glycolysis had an extracellular ph (pho) optimum of 6.0 with a much broader profile. the relative insensitivity of glycolysis to the lowering of pho was attributed to the ability of s. mutans to maintain a transmembrane ph gradient (delta ph ... | 1992 | 1607433 |
| 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 ... | 1992 | 1611209 |
| [a clinical study on panipenem/betamipron in chronic respiratory tract infections]. | panipenem/betamipron (cs-976, papm/bp), a new carbapenem antibiotic, was administered a single dose of 500 mg or 750 mg via intravenous drip infusion twice a day for treatment of chronic respiratory infection to study its clinical efficacy, bacteriological efficacy and safety. twenty nine cases were studied for the efficacy evaluation. only the safety evaluation was made in 6 cases which were judged to be unsuitable, because in some of them pneumonia and other diseases were not specified as the ... | 1992 | 1613969 |
| streptococcal and enterococcal bacteremia in patients with cancer. | eighty-two episodes of bacteremia due to streptococci (including the genus enterococcus) in 78 patients hospitalized at institut jules bordet between 1986 and 1988 were reviewed. the incidence ranged from 5.5 to 7.6 per 1,000 admissions (16% of all bacteremias). enterococcus faecalis, streptococcus sanguis, and streptococcus mitis were the most prevalent isolates, followed by streptococcus angionosus, streptococcus salivarius, and large colony-forming beta-hemolytic species (a, b, c, and g). twe ... | 1992 | 1617072 |
| clinical comparison of sentinel, a novel blood culture system, with radiometric bactec 460 and isolator 10 in the detection of streptococcal and anaerobic bacteraemias. | to compare the performance of the sentinel blood culture system with two other systems for the recovery of streptococci and anaerobes. | 1992 | 1624593 |
| short of a length:streptococcus sanguis knee infection from dental source. | 1992 | 1643460 | |
| cloning and nucleotide base sequence analysis of a spectinomycin adenyltransferase aad(9) determinant from enterococcus faecalis. | enterococcus faecalis ldr55, a human clinical isolate, is resistant to tetracycline (tcr), erythromycin (emr), and high levels (greater than 2,000 micrograms/ml) of spectinomycin (spr) but not streptomycin. filter matings between strain ldr55 and e. faecalis og1-rf produced transconjugants with the following resistance phenotypes: tcr emr spr, tcr emr, tcr spr, and tcr only but never emr or spr only. the genetic determinant encoding resistance to spectinomycin was cloned in streptococcus sanguis ... | 1991 | 1659306 |
| relation of baseline microbial parameters to future periodontal attachment loss. | the relationship between the level of subgingival species at baseline and subsequent attachment loss in a subject was examined. 38 subjects (14-71 years) with prior evidence of periodontal destruction were monitored 2x for pocket depth and attachment level at 6 sites per tooth at baseline and 2 months. a subject was considered to exhibit new attachment loss if 1 or more sites increased 3 mm or more in attachment level in 2 months. subgingival plaque samples were taken at the baseline visit from ... | 1991 | 1661304 |
| relation of counts of microbial species to clinical status at the sampled site. | the purpose of the present investigation was to relate clinical characteristics at a site to the frequency of detection, absolute counts and proportions of 14 subgingival species. subgingival plaque samples were removed by curette from the mesial surface of 2299 teeth in 3 healthy and 87 subjects with periodontal attachment loss. samples were dispersed, diluted and plated on trypticase soy agar supplemented with 5% sheep blood. after 7 days of anaerobic incubation, colonies were lifted onto nylo ... | 1991 | 1661305 |
| [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 = ... | 1991 | 1666667 |
| inhibition of adsorption of oral streptococci to saliva treated hydroxyapatite by chitin derivatives. | this study estimated the effects of five chitin derivatives low molecular chitosan (lmcs), ethyleneglycol chitin (pegt), carboxymethyl chitin (pcmt), sulphated chitosan (psss), and phosphorylated chitin (pppt) on the adsorption of three oral streptococci to saliva-treated hydroxyapatite (s-ha). the adsorption was evaluated by measuring the optical density of the bacterial cell suspensions released from saliva-treated hydroxyapatite by 0.5 n hcl. the adsorption of test strains to s-ha progressive ... | 1991 | 1668072 |
| nucleotide sequence of a gene coding for a saliva-binding protein (ssab) from streptococcus sanguis 12 and possible role of the protein in coaggregation with actinomyces. | the nucleotide sequence of a 2.9-kb streptococcal dna fragment which codes for two proteins with mrs of 36,000 (streptococcus sanguis adhesin b [ssab]) and 20,000 has been determined. the ssab gene is 927 bp and codes for a 34,684-da protein. the open reading frame coding for the 20-kda protein is 489 bp and codes for a protein of 17,885 da. the ssab protein has a putative hydrophobic 19-amino-acid signal sequence resulting in a 32,620-mr secreted protein, whereas the 20-kda protein has no signa ... | 1991 | 1671775 |
| inhibitory effect of stannous fluoride and other commonly used antimicrobial agents on oral bacteria. | the purposes of this investigation were to evaluate and compare the antimicrobial effect of stannous fluoride (snf2) gel and other commonly used oral antimicrobial agents/products. the antibacterial inhibitory effect of the various agents was evaluated by their effect against oral plaque bacteria including strains of streptococcus sanguis, streptococcus sobrinus, actinomyces viscosus, actinobacillus actinomycetemcomitans, bacteroides gingivalis and bacteroides intermedius. a lawn of the specific ... | 1991 | 1681003 |
| glucanase-producing organisms in human dental plaques. | selective media were used to isolate a wide range of bacteria from sixty human dental plaques. glucanase activities of the isolates were determined on dextran- and starch-containing media. all sixty samples of dental plaque yielded some colonies showing amylolytic and dextranolytic activities. the glucanase-producing organisms comprised 20% of the isolates. of these 38% were gram-positive rods, 27% gram-positive cocci, 28% gram-negative rods and 7% were gram-negative cocci. the cultural groups m ... | 1990 | 1691432 |
| influenza a virus potentiates bacteria-induced histamine release. examination of normal individuals and patients allergic to bacteria. | influenza a virus was found to enhance basophil histamine release induced by escherichia coli, salmonella enteritidis, staphylococcus aureus, streptococcus pneumoniae and streptococcus sanguis, but did not per se release histamine. this potentiating effect of the virus was seen both when the bacteria-induced mediator release was ige-dependent (i.e. patient allergic to bacterium) and when the bacterium caused histamine release by a non-immunological mechanism independent of ige (putative sugar-le ... | 1990 | 1700889 |
| identification of mutans streptococci with monoclonal antibodies. | mutans streptococci have been correlated with dental caries. the identification of the species within this group is still a problem. the characterization of a monoclonal antibody (mab) omvu10 against s. sobrinus as well as the isolation and characterization of mabs against s. mutans (omvu30 and omvu31), s. cricetus (omvu40) and mutans streptococci (omvu2) is described. the epitope specificity for omvu10 and omvu31 was cell-wall antigen b in both cases although both mabs recognized different spec ... | 1990 | 1707251 |
| comparison of streptococcus mutans and streptococcus sanguis receptors for human salivary agglutinin. | oral streptococci vary in their susceptibility to salivary agglutinin-mediated aggregation. to understand the molecular basis of this specificity, the structure and function of receptors for agglutinin from streptococcus mutans kpsk2 (msl-1) and streptococcus sanguis m5 (ssp-5) were compared. immunological screening of an s. mutans kpsk2 genomic dna library yielded two identical clones expressing a streptococcal protein that co-migrated with a 220 kda peptide in sds extracts from this organism. ... | 1990 | 1708078 |
| acceptor activity of affinity-immobilized dextransucrase from streptococcus sanguis atcc 10558. | 1991 | 1722734 | |
| adherence of oral streptococci to salivary glycoproteins. | we used an overlay method to study the ability of human salivary glycoproteins to serve as receptors for several strains of streptococci that colonize the oral cavity. parotid and submandibular-sublingual salivas were collected as ductal secretions, separated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and transferred to nitrocellulose membranes. the resulting blots were overlaid with [35s]methionine-labeled bacteria, and salivary components to which the bacteria bound were det ... | 1992 | 1729194 |
| stsi, a new foki isoschizomer from streptococcus sanguis 54, cleaves 5' ggatg(n)10/14 3'. | 1992 | 1741303 | |
| streptococcus crista sp. nov., a viridans streptococcus with tufted fibrils, isolated from the human oral cavity and throat. | we studied strains of an unusual streptococcus that superficially resembles streptococcus sanguis but has fibrils that are arranged in lateral tufts. these strains were originally isolated from human throats and oral cavities and have been referred to previously as "streptococcus sanguis i," the "cr group," and the "tufted-fibril group." until now, insufficient phenotypic data have been available to allow reliable differentiation of these strains from other viridans streptococcal species, partic ... | 1991 | 1742199 |
| a scheme for the identification of viridans streptococci. | a collection of strains representing all the currently recognised species of oral or viridans streptococci (streptococcus sanguis, s. parasanguis, s. gordonii, s. oralis, s. mitis, s. salivarius, s. vestibularis, s. anginosus, s. constellatus, s. intermedius, s. mutans and s. sobrinus) were tested for the production of a range of glycosidase activities with 4-methylumbelliferyl-linked fluorogenic substrates, and for reactions in a range of conventional fermentation and hydrolytic tests. the resu ... | 1991 | 1753394 |
| secretory iga adsorption and oral streptococcal adhesion to human enamel and artificial solid substrata with various surface free energies. | in this paper, secretory iga adsorption from a single component siga solution and from human whole saliva onto human enamel and artificial solid substrata with various surface free energies was studied as a function of time. elisa indicated that screening or displacement of adsorbed siga by other salivary proteins occurred only on low surface free energy substrata, not on high surface free energy substrata such as enamel. in addition, the adhesion of three oral streptococcal strains (streptococc ... | 1991 | 1772830 |
| studies on the subcellular localization of protease and arylaminopeptidase activities in streptococcus sanguis atcc 10556. | intact cells of streptococcus sanguis atcc 10556 possessed arylaminopeptidases exhibiting activity toward the nitroanilide (na) derivatives of leucine, alanine, methionine, arginine, or lysine. weak hydrolytic activity was observed in assays with the na derivatives of valine, proline, glycine, or glutamic acid. subcellular localization studies revealed that arylaminopeptidase activities were located in both the cell membrane and cytoplasm. arylaminopeptidases exhibiting activity toward the leuci ... | 1991 | 1774382 |
| the effect of sucralfate on the growth of cariogenic streptococci. | sucralfate, an aluminum salt of sucrose octasulfate, has been shown to be effective in reducing the discomfort of radiation therapy-induced oral mucositis. this study was done to determine whether sucralfate could be used as a nutritional source for dental caries-producing organisms. three streptococcus strains were cultured in a defined medium. sucralfate powder was evaluated for its ability to be used as a carbohydrate food source by these organisms. the addition of sucralfate alone did not st ... | 1991 | 1774688 |
| overwhelming postsplenectomy sepsis twenty-two years after operation risks management and prevention. | a new case of fatal postsplenectomy sepsis occurring 22 years after operation for splenic rupture is described. there are now 30 published cases in which this complication occurred 10 or more years after operation. the microorganism responsible for the vast majority of cases is streptococcus pneumoniae. the causative pathogen identified in the present case was a viridans streptococcas, strep. sanguis, an opportunistic, low virulence pathogen. the clinical presentation of this patient is characte ... | 1991 | 1775965 |
| [close association of streptococcus sanguis and behçet's disease]. | the oral flora of patients with behçet's disease was investigated and compared to that of controls. the proportion of streptococcus (s.) sanguis in the flora of patients with this disease was always higher than that of healthy controls. it is noteworthy that serotypes of s. sanguis in the oral flora of patients were different from controls. immune responses against s. sanguis were also examined in the patients. antibody titers against s. sanguis were higher in patients than in controls. furtherm ... | 1991 | 1776607 |
| antimicrobial proteins in human unstimulated whole saliva in relation to each other, and to measures of health status, dental plaque accumulation and composition. | saliva antimicrobial proteins may interact in a common system to influence the oral ecology. clinical studies of antimicrobial protein action thus may require a multiple-protein approach. multivariate statistical methods have been used to describe possible patterns of interaction for lysozyme, lactoferrin, salivary peroxidase and secretory iga in stimulated parotid saliva. however, oral microbes are most likely to encounter antimicrobial proteins in mixed resting saliva. relationships among leve ... | 1991 | 1776923 |
| measuring harmful levels of bacteria in dental aerosols. | the potential spread of the bacteria in aerosols emphasizes the familiar triad--gloves, masks and eyewear--for all operative procedures. | 1991 | 1783725 |
| analogies in the two-dimensional spatial arrangement of adsorbed proteins and adhering bacteria: bovine serum albumin and streptococcus sanguis 12. | neither proteins nor bacteria adsorb or adhere homogeneously to a substratum surface. the final two-dimensional spatial arrangement depends on a complicated interplay between protein-protein (bacterium-bacterium) and protein (bacterium)-substratum interactions and the prevailing hydrodynamic conditions. in this paper, results are presented of two separate experiments in which bovine serum albumin (bsa) was adsorbed to, or streptococcus sanguis 12 was deposited on substrata with different wettabi ... | 1991 | 1786246 |
| the role of oral bacteria in the pathogenesis of infective endocarditis. | various micro-organisms have been implicated as causative agents for bacterial endocarditis, including lactobacilli and in particular the viridans streptococci which are more commonly associated with dental caries. of these, the most frequently isolated one has the descriptive name streptococcus sanguis. the disease is characterized by growth of micro-organisms within a platelet-fibrin thrombus protruding from a valve leaflet. an understanding of the pathogenesis involves knowledge of the mechan ... | 1991 | 1789762 |
| [bacteriological examination of infections in the field of oral surgery]. | etiology of bacterial infections in the field of oral surgery was studied. a total of 270 samples collected from patients with encapsulated abscess in their oral cavities was examined and bacteria were isolated from the 244 samples (90.4%). the following results were found; 1) organisms more than one from one sample were frequently isolated from cases with parodontitis, pericoronitis and gnathitis. isolation of anaerobic bacteria was common (54.2%). 2) streptococcus milleri and streptococcus san ... | 1991 | 1791332 |
| the preparation and characterisation of proteoliposomes for targeting to oral bacteria. | 1991 | 1794541 | |
| structural studies of amyloglucan and a soluble glucan produced from starch by streptococcus sanguis 1 mc 204. | two alpha-d-glucans, produced from amylopectin by an oral isolate streptococcus sanguis 1 mc 204, were shown to contain both (1----4) and (1----6) linkages. the first alpha-d-glucan (amyloglucan) was adherent and highly insoluble, and methylation analysis, i.r. spectroscopy, and enzymic analyses showed it to be similar to amylopectin but less branched with longer interior and exterior chains. the second polymer was a non-adherent soluble alpha-d-glucan that was similar to amyloglucan but with lo ... | 1991 | 1802385 |
| influence of delmopinol on bacterial zeta-potentials and on the colloidal stability of bacterial suspensions. | delmopinol is a low molecular weight surface-active compound that has been shown to be effective against dental plaque both in vitro and in vivo and against gingivitis in vivo. to study the mode of action of delmopinol, the influence of the compound on the stability of bacterial suspensions, both with and without saliva, and on the zeta-potentials of oral streptococci was studied. the results showed that delmopinol reduced the magnitude of the zeta-potentials, but, in contrast, the colloidal sta ... | 1991 | 1803851 |
| distribution, antibiotic susceptibility and tolerance of bacterial isolates in culture-positive cases of endocarditis in the netherlands. | during a two-year period data were collected nationwide in the netherlands on 438 episodes of bacterial endocarditis (be) in 432 patients. of the strains isolated in these patients 419 were available for analysis. of these, 326 were isolated in native valve endocarditis (nve) and 93 in prosthetic valve endocarditis (pve). viridans streptococci, staphylococci and enterococci together constituted 87% of the isolates. more than 46% of the viridans streptococci consisted of streptococcus sanguis. en ... | 1991 | 1810724 |
| polymerase chain reaction amplification, cloning, sequence determination and homologies of streptococcal atpase-encoding dnas. | the highly conserved portion of the catalytic subunit (beta-subunit) of the membrane-bound, proton-translocating atpase from three strains of oral streptococci has been amplified via the polymerase chain reaction. hybridization studies demonstrated the existence of homology between escherichia coli and bacillus megaterium beta-subunit probes at the streptococcal dna level. highly degenerate primers, based on the e. coli and b. megaterium amino acid (aa) sequences, were used to amplify the homolo ... | 1991 | 1825305 |
| molecular basis for the association of glucosyltransferases with the cell surface of oral streptococci. | the expression of streptococcus mutans mutant glucosyltransferase-i enzymes in s. sanguis and s. milleri suggests that cell-associated glucosyltransferase activity is dependent upon both glucan synthesis and glucan binding by the carboxyl-terminal repeating units of the enzyme. mutant enzymes lacking these repeating units were only present in the extracellular fluids of these transformed streptococcal strains. | 1991 | 1829422 |
| vertebral osteomyelitis secondary to an oral infection. | 1991 | 1830097 | |
| failure of two macrolide antibiotics to prevent post-extraction bacteraemia. | two macrolide antibiotics, erythromycin and josamycin, were compared in a double-blind trial to examine their efficacy in the prevention of post-dental extraction bacteraemia in a group of healthy patients. an in vitro blood culture system was used. isolates of streptococci were identified to species level. minimum inhibitory concentrations (mics) of erythromycin and of josamycin for each isolate were estimated by an agar dilution technique, with controls. levels of drug in the serum of voluntee ... | 1991 | 1832916 |
| photolabeling of dextransucrase from streptococcus sanguis with p-azidophenyl alpha-d-glucopyranoside. | dextransucrase from streptococcus sanguis atcc 10558 was photolabeled using p-azidophenyl alpha-d-glucopyranoside with an apparent rate constant of inactivation of 1.40 min-1. the dissociation constant for this compound, which acts as an acceptor molecule in the enzymatic reaction, is 90 microm. apparently two acceptor binding sites exist on dextransucrase as shown by (i.) photolabeling the enzyme with p-azidophenyl-alpha-d-[5,6-3h]glucopyranoside and (ii.) fluorescence titration experiments. | 1991 | 1837494 |
| streptococcal adherence to uncoated and saliva-coated restoratives. | the adherence of streptococcus sanguis and s. mutans to seven restoratives in the presence and absence of an artificial salivary pellicle has been investigated. the physiochemical surface characteristics of the bacteria and of the restoratives were also measured, together with the effect of salivary coating of restoratives. zeta potential of uncoated restoratives showed a positive correlation with the number of adherent s. mutans cells and s. sanguis cells. s. sanguis showed a positive correlati ... | 1991 | 1839312 |
| clinical and microbiological findings on newly inserted hydroxyapatite-coated and pure titanium human dental implants. | the clinical and microbiologic features of 30 hydroxyapatite-coated root-form endosseous dental implants (tri-stage) were compared to 10 similar pure titanium implants without hydroxyapatite coatings. in 7 of 9 partially edentulous patients studied, pure titanium fixtures were placed adjacent to hydroxyapatite-coated implants. implants in the maxilla were submerged beneath mucosal tissues after implant placement for a minimum of 6 months, and in the mandible for at least 4 months. all patients w ... | 1991 | 1843465 |
| sequence and structural analysis of surface protein antigen i/ii (spaa) of streptococcus sobrinus. | streptococcal antigen i/ii or the surface protein antigen a (spaa) of streptococcus sobrinus is an adhesin which mediates binding of the organism to tooth surfaces. the complete sequence of the gene which encodes spaa has been determined. the gene consists of 4,584 bp and encodes a protein of 1,528 amino acid residues. the deduced amino acid sequence shows extensive homology with those of the cell surface adhesins from streptococcus mutans serotypes c and f and from streptococcus sanguis. struct ... | 1991 | 1855987 |
| molecular cloning and nucleotide sequencing of the arthrobacter dextranase gene and its expression in escherichia coli and streptococcus sanguis. | a bacterial strain, which assimilated dextran and water-insoluble glucan produced by streptococcus mutans, was isolated from soil. the bacterium produced and secreted potent dextranase activity, which was identified as arthrobacter sp. and named cb-8. the dextranase was purified and some enzymatic properties were characterized. the enzyme efficiently decomposed the water-insoluble glucan as well as dextran. a gene library from the bacteria was constructed with escherichia coli, using plasmid puc ... | 1991 | 1859672 |
| incidence of penicillin tolerance among blood culture isolates of streptococcus sanguis, 1987-88. | laboratories that reported isolations of streptococcus sanguis from blood cultures to the communicable disease surveillance centre (cdsc) colindale were requested to submit strains to bath public health laboratory to allow the prevalence of penicillin tolerance within different biotypes of this species to be studied. one hundred and fifty one streptococcus spp were received from 78 united kingdom laboratories in one year. strains were identified using the api 20 strep, and minimum inhibitory con ... | 1991 | 1864989 |
| interactions of sanguinarine and zinc on oral streptococci and actinomyces species. | sanguinaria extract, which contains benzophenanthridine alkaloids, has been used as a folk medicine for many years. minimum inhibitory and minimum bactericidal concentrations (mic and mbc values) for sanguinarine were determined for common and etiologically important plaque bacteria. because the efficacy of sanguinarine is believed to be enhanced by zinc, isobolograms were assessed to determine their mode(s) of interaction. hydrogen ion concentration influenced the inhibitory activity of both sa ... | 1991 | 1878916 |
| delineation of a segment of adsorbed salivary acidic proline-rich proteins which promotes adhesion of streptococcus gordonii to apatitic surfaces. | cells of several strains of streptococcus gordonii attached in much higher numbers to experimental pellicles formed from samples of submandibular or parotid saliva on hydroxyapatite (ha) beads than to buffer controls. the nature of the salivary components responsible were investigated by preparing experimental pellicles from chromatographic fractions of submandibular saliva obtained from trisacryl gf 2000m columns. adhesion of s. gordonii blackburn was promoted by two groups of fractions. the ad ... | 1991 | 1879920 |
| salivary-agglutinin-mediated adherence of streptococcus mutans to early plaque bacteria. | interspecies binding is important in the colonization of the oral cavity by bacteria. streptococcus mutans can adhere to other plaque bacteria, such as streptococcus sanguis and actinomyces viscosus, and this adherence is enhanced by saliva. the salivary and bacterial molecules that mediate this interaction were investigated. salivary agglutinin, a mucinlike glycoprotein known to mediate the aggregation of many oral streptococci in vitro, was found to mediate the adherence of s. mutans to s. san ... | 1991 | 1894355 |
| subclass distribution of salivary secretory immunoglobulin a antibodies to oral streptococci. | the ability of specific secretory immunoglobulin a (s-iga) antibodies to inhibit bacterial colonization of mucosal surfaces may be neutralized by the activity of bacterial iga1 proteases. because of the resistance of the iga2 subclass to these enzymes, the biological effect of iga1 proteases in vivo may depend on the subclass distribution of the bacterium-specific antibodies. we have estimated the subclass distribution of s-iga antibodies in saliva samples from 13 individuals against iga1 protea ... | 1991 | 1894364 |
| [non-groupable streptococci: identification, sensitivity to antibiotics (charles nicolle hospital in tunis)]. | 50 strains of viridans streptococci isolated from human material are identified by biochemical tests (bile esculin, cl na 6,5%, acid production from lactose, mannitol, sorbitol, inulin, arginine, esculin and starch hydrolysis; production of levan and dextran in sucrose media) streptococcus salivarius and streptococcus mitis are predominant species. susceptibility to antibiotics was studied: 70% of viridans streptococci were susceptible to all antibiotics tested, high level resistance to aminogly ... | 1991 | 1895917 |
| on salivary film formation and bacterial retention to solids. a methodological and experimental in vitro study. | a parallel-plate flow cell system was developed to assess individual and combined parameters relevant to oral microbial retention. in this system, internal reflection germanium prisms represented oral solid surfaces including tooth surfaces. the system used, allowed adsorbed protein films to be analyzed in situ by multiple non-destructive surface analytical techniques, without provoking surface associated biofilms. using a range of biochemical and biophysical techniques, germanium prisms of medi ... | 1991 | 1896924 |
| sorbitol transport and metabolism by oral streptococci. | sorbitol transport by oral streptococci was mediated by a phosphoenolpyruvate phosphotransferase system (pts). the transition of s. sanguis 160 from continuous growth on limiting glucose to limiting sorbitol resulted in induction of eiisor of the sorbitol-pts, as well as sorbitol-6-p dehydrogenase which converts sorbitol-6-p to fructose-6-p. sorbitol transport activity required the presence of a soluble sorbitol-specific component of the pts, tentatively identified as an enzyme iii for sorbitol ... | 1991 | 1896926 |
| platelet aggregation induced by uncommon serotypes of streptococcus sanguis isolated from patients with behçet's disease. | uncommon serotypes were tested for their ability to induce aggregation in platelet-rich plasma. both uncommon and common serotypes induced platelet aggregation in rabbit platelet-rich plasma, but serotonin release was higher with the uncommon serotypes. aggregation at atp release varied between uncommon and common serotypes. with human platelet-rich plasma, only uncommon serotypes showed aggregation. differences in serotype selectivity and the rate of aggregation were noted among platelet donors ... | 1991 | 1898270 |
| streptococcus sanguis survival in k-sol. comparison of gentamicin and the fluoroquinolone antibiotics. | viridans streptococci are poorly covered by gentamicin sulfate in corneal storage medium. to evaluate possible antibiotic alternatives among the newer broad-spectrum fluoroquinolone antibiotics, we compared the survival of the viridans representative streptococcus sanguis in k-sol with gentamicin sulfate (100 mg/l), norfloxacin (250 mg/l), ciprofloxacin lactate (250 mg/l), ofloxacin (250 mg/l), or no antibiotic. at 23 degrees c, k-sol with gentamicin produced a 2-log kill by 80 minutes. by compa ... | 1991 | 1901486 |
| identification of a region that influences host range of the streptococcal conjugative plasmid pip501. | pip501 is a member of a group of conjugative plasmids that are self-transmissible to a wide variety of streptococci as well as to other gram-positive bacteria. several pip501 restriction fragment deletion derivatives have been isolated and characterized. in this paper we describe one such derivative (pva1702) which was conjugally proficient but had a limited host range. the loss of host range ability was seen as decreased conjugal transfer from enterococcus faecalis to streptococcus sanguis and ... | 1991 | 1903546 |
| infectious endocarditis after fiberoptic sigmoidoscopy. with a literature review. | infectious endocarditis is a feared complication of procedures causing bacteremia. gastrointestinal procedures cause bacteremia, but are seldom followed by infectious endocarditis. of nine cases found in the english literature, only five have convincing evidence that endocarditis resulted from the gastrointestinal procedure. i present a new case of endocarditis due to streptococcus sanguis type ii after fiberoptic sigmoidoscopy. | 1991 | 1918852 |
| protein a-streptokinase fusion protein for immunodetection of specific igg antibodies. | the streptococcal streptokinase gene truncated at its 5' end was fused to regions of the staphylococcal protein a gene encoding the fc-binding domains a and b. the resultant fusion gene, when expressed in the escherichia coli lacpo system or under the spea expression/secretion signals in s. sanguis, specified a bifunctional hybrid protein, spa-skc, capable of fc binding and plasminogen activation. when used in immunoassays designed to titrate antisera raised against bovine chymosin, human serum ... | 1991 | 1919031 |
| [alpha-hemolytic streptococcal septicemia and meningitis in immunocompromised children]. | many kinds of microorganisms can produce toxic septicemia in immunocompromised hosts. we are reporting alpha-hemolytic streptococcal septicemia and meningitis in two children with hematological malignancies. [case 1] 6 year old girl who had been suffering from acute lymphocytic leukemia. she had sepsis and bacterial meningitis in maintenance-therapy for leukemia. streptococcus sanguis was isolated from the blood and cerebrospinal fluid (csf). [case 2] 11 year old girl who had had malignant lymph ... | 1991 | 1919121 |
| [palpebral edema with fever and streptococcus sanguis septicemia]. | a case of facial cellulitis complicated by regional thrombophlebitis and septicemia is reported in a 6 year-old girl. streptococcus sanguis, a bacterial agent, unusually responsible for cellulitis, was isolated from 5 blood cultures. this child had no immunosuppression or endocarditis or dental infection. she had been previously given a non-steroidal anti-inflammatory agent, which was potentially responsible for the diffusion of infection. | 1991 | 1929750 |
| synergy and cumulated killing effect of the penems fce 22101 and fce 25199 in combination with gentamicin against bacteria isolated from septicaemia. | blood isolates of enterococcus faecalis, streptococcus sanguis, staphylococcus aureus, e. coli and klebsiella oxytoca were tested for their synergistic and cumulated killing effect (cke) with the new penems fce 22101 or fce 25199 in combination with gentamicin. the tissue cage model in rabbits was used to study the cke in vivo after antibiotic treatment of the bacteria in vitro. synergy was observed within two to seven h with all isolates in early logarithmic phase, except with s. aureus, which ... | 1991 | 1930964 |
| enumeration of oral streptococci on media containing different concentrations of sodium and potassium ions. | laboratory "type" strains of oral streptococci were screened for their ability to grow on mitis-salivarius agar (msa) in the presence of increasing concentrations of either na+ or k+ up to 500 mmol/l. strains were generally better able to withstand increasing concentrations of na+ than k+, although low numbers of colony-forming units (cfus) were seen with the highest concentration of either cation. two strains of streptococcus mutans, ingbritt 162 and ingbritt 175, behaved differently when the c ... | 1991 | 1939833 |
| metabolism of 17 beta-estradiol by oral streptococcus mutans, streptococcus sanguis, bacillus cereus and candida albicans. | the ability of oral isolates of streptococcus mutans, streptococcus sanguis, bacillus cereus and candida albicans to metabolize 17 beta-estradiol was analyzed by thin-layer chromatography using 4-14c-estradiol as the substrate. all test microorganisms metabolized 17 beta-estradiol. estrone was the main metabolic product, except for b. cereus, which converted 17 beta-estradiol mainly to unidentified, more polar metabolites. s. sanguis and b. cereus had the most active metabolism but s. mutans and ... | 1991 | 1945489 |
| factors affecting peptide catabolism by oral streptococci. | the binding of a number of unsubstituted peptides to streptococcus sanguis and streptococcus mutans and their subsequent degradation by such cells were examined. peptides were added to cell suspensions prepared from glucose-limited growth in a chemostat and, at appropriate time intervals, cell-free filtrates were analyzed for peptides and their constituent amino acid residues by high-pressure liquid chromatography techniques. the results indicated that peptide hydrophobicity plays a limited role ... | 1991 | 1945490 |
| ecology of viridans streptococci in the oral cavity and pharynx. | recently published taxonomic studies of viridans streptococci have resulted in several changes in the nomenclature and definition of oral streptococcal species. with this background, the ecology of streptococci in the oropharyngeal cavities was reinvestigated. the results based on the examination of 1426 streptococcal isolates confirmed and extended earlier findings. apart from mature supragingival plaque, which contained a mixture of all orally encountered streptococci, each site showed a chara ... | 1991 | 1945494 |
| sorbitol inhibition of glucose metabolism by streptococcus sanguis 160. | clinical studies in sweden have shown that the proportion of sorbitol-utilizing strains of streptococcus sanguis increases in dental plaque from individuals using sorbitol-containing products for prolonged periods. we have undertaken to study the metabolism of glucose and sorbitol by s. sanguis 160, isolated from a subject consuming sorbitol-containing chewing-gum 4 times a day for 4 years. growth on glucose was inhibited by the presence of sorbitol in the growth medium and sorbitol was utilized ... | 1991 | 1945498 |
| sorbitol transport by streptococcus sanguis 160. | sorbitol metabolism was examined with a sorbitol-fermenting strain (160) of streptococcus sanguis isolated from the dental plaque of a subject using sorbitol-containing chewing-gum for 4 years. s. sanguis 160 was grown in continuous culture (ph, 7.0; dilution rate, 0.1 h-1) with glucose, sorbitol and nitrogen (sorbitol-excess) limitations. cells grown with a glucose limitation exhibited low, but detectable, uptake of [14c]-sorbitol and transition to medium limiting in sorbitol resulted in a 5-fo ... | 1991 | 1945499 |
| selective effects of histidine-rich polypeptides on the aggregation and viability of streptococcus mutans and streptococcus sanguis. | enriched preparations of histidine-rich polypeptides (hrps) and isolated hrp pairs (1-2, 3-4 and 5-6) degrade in the presence of fresh autologous whole saliva to a series of low-molecular-weight cationic peptides (hrps 6a-c and 7). analysis of the hrps during degradation indicates that: hrp 1 is not the parent molecule of the hrps; the hrp pairs do not convert to each other in a cascade-like sequence in saliva; and the hrps can be separated into 2 groups consisting of hrps 1-2 and 3-7. preparati ... | 1991 | 1945500 |
| antineoplastic agents inhibit the growth of streptococcus mutans and streptococcus sanguis in vitro. | the effect of methotrexate (mtx) and doxorubicin on the growth, metabolism and ultrastructure of streptococcus mutans and streptococcus sanguis was studied in vitro. both anticancer drugs exerted an inhibitory effect on the oral streptococci. mtx was more inhibitory than doxorubicin. the minimum inhibitory concentrations (mics) of mtx to s. mutans were 0.25-2.5 micrograms/ml and that of doxorubicin 0.2 mg/ml. the mics of mtx and doxorubicin to s. sanguis were 0.025 micrograms/ml and 2.0-0.02 mg/ ... | 1991 | 1945501 |
| reciprocal transfer of penicillin resistance genes between streptococcus pneumoniae, streptococcus mitior and streptococcus sanguis. | 1991 | 1960128 | |
| [destructive endocarditis caused by streptococcus sanguis on normal valves after gastroduodenoscopy]. | in recent years, epidemiological and clinical patterns in infective endocarditis are changed: mean age of patients, sex, underlying cardiac diseases, source of bacteremia, availability of better diagnostic methods--specially two-dimensional and doppler echocardiography--and surgical options. the authors report a paradigmatic case of a young man without cardiac disease, who developed a destructive endocarditis complicated by refractory congestive heart failure; the cause was an organism of low pa ... | 1991 | 1961444 |
| [ecosystem of microbial flora in periodontal pockets, in vitro]. | this study was designed to analyze the succession of an ecosystem of microbial flora in periodontal pockets, in vitro. bacterial strains used in this study, were fusobacterium nucleatum atcc 10953, porphyromonas gingivalis 381, streptococcus sanguis atcc 10557 and streptococcus mutans omz 176. the bacterial cells, associated with beneficial, pathogenic or plaque forming activity, were cultured in brain heart infusion medium including hemin, vitamin-k1, l-cysteine hydrochloride and sodium thiogly ... | 1990 | 1966733 |
| purification and characterization of a bacteroides loeschei adhesin that interacts with procaryotic and eucaryotic cells. | the adhesin of bacteroides loeschei pk1295 that mediates coaggregation with streptococcus sanguis 34 and hemagglutination of erythrocytes was purified to electrophoretic homogeneity. the lectinlike protein has an estimated native mr of 450,000 and consists of six subunits of identical molecular weight (mr 75,000). the purified adhesin appears to be a basic protein with a pi between 7.4 and 8.0. amino acid and n-terminal sequence analyses were carried out with the purified protein. these indicate ... | 1990 | 1970562 |
| adherence of porphyromonas (bacteroides) gingivalis to streptococcus sanguis in vitro. | intergeneric bacterial adherence is responsible for the complexity of the microbiota in human dental plaque and is believed to enable some extraneous bacteria to initially colonize the human oral cavity. some current evidence indicates that streptococcus sanguis, an early colonizer of teeth, enhances subsequent colonization by porphyromonas (bacteroides) gingivalis, a bacterium associated with advanced adult periodontitis. in this study, selected strains of p. gingivalis and s. sanguis were test ... | 1991 | 1987021 |