| regulation of lactate dehydrogenase activity in rothia dentocariosa by fructose 1,6-diphosphate and adenosine 5'-triphosphate. | the l-(+)-lactate dehydrogenase from rothia dentocariosa strain 17931 is activated by fructose 1,6-diphosphate and inhibited by adenosine 5'-triphosphate. the enzyme has a molecular weight of 120,000. in these respects, it resembles the lactate dehydrogenase of actinomyces viscosus. | 1976 | 181365 |
| presence of rothia dentocariosa strain 477 serotype 2 in gingiva of patients with inflammatory periodontal disease. | | 1977 | 264887 |
| levan production by a strain of rothia: activation of complement resulting in cytotoxicity for human gingival cells. | an extracellular polysaccharide identified as a levan has been isolated from rothia dentocariosa, strain 477 serotype 2. the levan produced by strain 477 has been found to activate the complement cascade in the absence of specific antibodies. this activation was found to be cytotoxic for human gingival cells in tissue culture. | 1977 | 270507 |
| a study of the bacteria associated with advancing periodontitis in man. | samples of apical plaque were taken by means of an anaerobic gas-flushed syringe from 21 sites in eight patients. the samples were anaerobically dispersed, diluted and plated and incubated in an atmosphere of 80% n2, 10% h2 and 10% co2 for 7-21 days. all colonies on plates containing 20-50 isolates were picked, repeatedly restreaked, characterized and identified where possible by a probabilistic computer identification program. the sites were divided into four groups on the basis of clinical fea ... | 1979 | 294457 |
| infective endocarditis caused by rothia dentocariosa. | | 1979 | 496114 |
| infectious endocarditis caused by rothia dentocariosa. | | 1979 | 496115 |
| identifying rothia dentocariosa. | | 1979 | 496121 |
| sensitivity of rothia dentocariosa. | | 1978 | 690054 |
| abscess associated with rothia dentocariosa. | rothia dentocariosa, an aerobic member of the actinomycetaceae, was isolated from a pilonidal abscess. the clinical occurrence, bacteriological characteristics, and antimicrobial sensitivity pattern are presented. | 1978 | 730829 |
| chemically defined medium for rothia dentocariosa. | a chemically defined medium for rothia dentocariosa has been established. all strains tested, including the type strain, grew well in this medium. rothia strains had a generation time of 3.5 to 4.0 h, with a yield of 62 mg (dry weight) per 100 ml after 72 h of growth in the chemically defined medium. | 1977 | 836021 |
| ultrastructure of rothia dentocariosa. | rothia dentocariosa was seen as a typical prokaryotic cell, lacking nuclear envelope, mitochondria and a reticulum with ribosomes. the plasma membrane was located close to and parallel to the wall. the outer limits of the wall were associated with what may be capsular or slime material. chain-like filaments of thick walled coccoid cells underwent septation both transverse and parallel to the long axis of the chain. side branching and terminal clavate forms were also present. these clavate forms ... | 1976 | 956779 |
| a glycolipid from rothia dentocariosa. | | 1975 | 1057394 |
| untraditional glucose fermenting actinomycetes as human pathogens. part ii: rothia dentocariosa as a cause of abdominal actinomycosis and a pathogen for mice. | rothia dentocariosa was proved as a primary pathogen for man in the case of abdominal infection of a 19 year old woman. clinical findings were typical for actinomycosis and the patient was cured with penicillin following surgery. actinomycotic granules were proved by direct microscopy in the pus and r. dentocariosa was recovered as a single pathogen according to the microscopy. two morphologically distinct isolates recovered from primocultures were described. they were studied separately and fin ... | 1975 | 1202874 |
| effect of natural and synthetic immunomodulators on the synthesis of interferon by peritoneal cells of mice. | the effect of different natural and synthetic immunomodulators on the spontaneous interferon (ifn) synthesis by freshly isolated resident peritoneal cells of balb/c, nzb and c3h mice was investigated. actinomycetal glycolipids isolated from curtobacterium betae, faenia rectivirgula, rothia dentocariosa and saccharopolyspora hirsuta at the concentration 1-20 micrograms/ml were found to potentiate the ifn synthesis by the peritoneal cells of balb/c mice. similar results were obtained when dsrna, l ... | 1992 | 1279963 |
| 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 |
| immunostimulatory effect of rothia dentocariosa in mice. | in mice killed rothia dentocariosa cells in doses of about 1.5 mg dry weight activated anti-infection immunity to listeria antigens and anti-tumour immunity to the ascitic form of mouse sarcoma s-180. their probable target site is the macrophage. the rothia-activated macrophages in human gingiva may take part in the pathogenesis of periodontal disease. three models were employed to verify the immunostimulating properties of preventively administered rothia dentocariosa bacterin-1) a spleen macro ... | 1991 | 1830743 |
| infection of an arteriovenous fistula with rothia dentocariosa. | rothia dentocariosa is an unusual cause of infection in humans, despite the fact that the organism is frequently isolated from the oral cavity. the authors describe a case of r. dentocariosa infection following revision of an arteriovenous fistula in a 46-year-old diabetic man with renal failure. | 1991 | 1873975 |
| cellular fatty acid composition as an adjunct to the identification of asporogenous, aerobic gram-positive rods. | cellular fatty acid (cfa) compositions of 561 asporogenous, aerobic gram-positive rods were analyzed by gas-liquid chromatography as an adjunct to their identification when grown on blood agar at 35 degrees c. the organisms could be divided into two groups. in the first group (branched-chain type), which included coryneform cdc groups a-3, a-4, and a-5; some strains of b-1 and b-3; "corynebacterium aquaticum"; brevibacterium liquefaciens; rothia dentocariosa; and listeria spp., the rods had siza ... | 1991 | 1899679 |
| partial purification and characterization of alpha-glucosidase from rothia dentocariosa. | disaccharidases of oral bacteria, especially alpha-glucosidase and beta-fructofuranosidase, are considered to play an important role in the induction of dental caries. upon the examination of disaccharidases from several strains of saccharolytic oral bacteria, we found all of those bacteria to be capable of hydrolyzing the glycosidic linkage of sucrose. one species of bacteria, rothia dentocariosa, was found to contain a single disaccharidase, alpha-glucosidase. this enzyme was partially purifie ... | 1989 | 2635358 |
| is rothia dentocariosa the cause of cat scratch disease? | | 1985 | 2863696 |
| [purification and various properties of pyroglutamyl peptidase from rothia dentocariosa]. | | 1986 | 2879232 |
| rothia dentocariosa pneumonia in an immunocompromised patient. | an 84-year-old woman with acute myelocytic leukemia presented with fever and a left upper lobe infiltrate on chest x-ray. she failed to respond to initial broad spectrum antibiotic therapy. bronchoalveolar lavage fluid and a transthoracic needle aspirate subsequently both grew rothia dentocariosa, a gram-positive branching rod. the pneumonia resolved after prolonged treatment with clindamycin. rothia dentocariosa must be considered a cause of opportunistic pulmonary infection. | 1987 | 3116352 |
| rothia dentocariosa endocarditis. | | 1988 | 3400712 |
| rothia dentocariosa endocarditis complicated by brain abscess. | a 27-year-old woman is described with rothia dentocariosa endocarditis, the fourth such case described in the literature. her course was complicated by brain abscess, which was treated successfully with antibiotics. it is believed this represents the first case of r. dentocariosa with central nervous system involvement. | 1988 | 3407660 |
| rothia dentocariosa septicaemia in a patient with chronic lymphocytic leukaemia and toxic granulocytopenia. | rothia dentocariosa is part of the human oral flora and has only rarely been reported as a cause of clinical infection. we report the isolation of rothia dentocariosa from the blood of a septicaemic patient with chronic lymphocytic leukaemia and bone marrow depression following treatment with clomipramine and zuclopentixol. | 1987 | 3436159 |
| [rothia dentocariosa infections]. | | 1986 | 3460821 |
| coaggregation of oral bacteroides species with other bacteria: central role in coaggregation bridges and competitions. | seventy-three freshly isolated oral strains representing 10 bacteroides spp. were tested for their ability to coaggregate with other oral gram-negative and gram-positive bacteria. none coaggregated with any of the gram-negative strains tested, which included capnocytophaga gingivalis, c. ochracea, c. sputigena, and actinobacillus actinomycetemcomitans. strains of bacteroides buccae, b. melaninogenicus, b. oralis, and b. gingivalis failed to coaggregate with any of the gram-positive strains teste ... | 1985 | 3888842 |
| numerical taxonomy and laboratory identification of bacterionema matruchotii, rothia dentocariosa, actinomyces naeslundii, actinomyces viscosus, and some related bacteria. | | 1973 | 4579125 |
| laboratory identification of rothia dentocariosa and its occurrence in human clinical materials. | fifty isolates of rothia dentocariosa from diverse clinical sources were characterized by 28 separate tests. an attempt was made to select practical tests that could be completed in a minimal length of time. rothia is also compared with actinomyces and nocardia with which it is often confused. of the isolates 100% were positive in the following reactions: catalase production, nitrate and nitrite reduction, esculin hydrolysis, and acid production from glucose, sucrose, maltose, salicin, and glyce ... | 1969 | 4886858 |
| isolation and serological characterization of a cell wall antigen of rothia dentocariosa. | a soluble polysaccharide antigen from the cell wall of rothia dentocariosa atcc 17931 has been isolated, purified and characterized by serological and chemical procedures. the polysaccharide (rps) was found to be located at the surface of cells grown under diverse environmental conditions, and could be easily detected on cells in pure culture or in clinical samples from humans and experimentally infected hamsters by fluorescent-antibody techniques. fructose, glucose, galactose, and ribose were t ... | 1970 | 4990847 |
| deoxyribonucleic acid base composition of rothia dentocariosa as determined by thermal denaturation. | the moles per cent guanine plus cytosine (gc) of 10 filamentous strains of rothia dentocariosa ranged from 65.4 to 69.7. major differences were not observed in the base composition of a filamentous form (69.7 moles% gc) and its coccal variant (68.0 moles% gc). | 1970 | 4992363 |
| the pathogenicity of rothia dentocariosa inoculated into mice. | | 1969 | 5261313 |
| role of surface fimbriae (fibrils) in the adsorption of actinomyces species to saliva-treated hydroxyapatite surfaces. | we studied the adsorption, morphological, and serological characteristics of selected actinomyces and related species. evaluation of uranyl acetate-stained cells by electron microscopy revealed wide variations among strains in the frequency of surface fimbriae. these variations did not always correlate with the percent adsorption to saliva-treated hydroxyapatite of the various actinomyces strains. however, two strains of rothia dentocariosa possessing no surface fimbriae and five strains of a. i ... | 1981 | 6169645 |
| beta-lactam antibiotics resistant rothia dentocariosa from infected postoperative maxillary cyst: studies on r-plasmid and beta-lactamase. | a cephalexin and penicillin g resistant strain of rothia dentocariosa was clinically isolated from pus of infected postoperative maxillary cyst. the strain contained multiple plasmids. plasmid curing tests with rifampicin eliminated cephalexin and penicillin g resistant phenotypic functions and 47 megadalton plasmids from the strain. beta-lactamase isolated from the strain hydrolyzed cephalosporin more efficiently than penicillin. | 1984 | 6333373 |
| immunologically specific direct t lymphocyte-mediated killing of nocardia asteroides. | macrophage-depleted populations of splenic lymphocytes obtained from immunized and nonimmunized balb/c mice were tested to determine their ability to kill nocardia asteroides guh-2 in vitro. nocardia-primed lymphocytes, but not normal lymphocytes, killed n. asteroides. the ability of these lymphocytes to kill n. asteroides could be further enhanced by in vitro activation of the lymphocytes with nocardial cell wall fragments 12 to 48 hr before challenge. the nocardicidal activity of the lymphocyt ... | 1983 | 6339627 |
| lipid and wall amino acid composition in the classification of rothia dentocariosa. | seven strains of rothia dentocariosa were degraded by acid methanolysis and the nonhydroxylated fatty acid methyl esters released were examined by thin-layer and gas chromatography. the fatty acid profiles were composed of iso-, anteiso- and straight chain saturated fatty acids with 12-methyltetradecanoic (anteiso-c15), 14-methylpentadecanoic (iso-c16), 14-methylhexadecanoic (anteiso-c17) and hexadecanoic acid (c16) as major components. a small scale integrated procedure was used for the sequent ... | 1984 | 6485631 |
| endocarditis caused by rothia dentocariosa. | a case of infective endocarditis caused by rothia dentocariosa is described in a 53 year old man with a history of rheumatic fever. r dentocariosa is a component of the oral microbiota and has only rarely and recently been recognised as a human pathogen. in this patient the oral flora was the probable source of infection, with a broken molar tooth providing the probable avenue for infection. | 1984 | 6501591 |
| [complex characteristics of rothia dentocariosa strains as possible etiological factors in periodontitis]. | | 1980 | 6797022 |
| aerobic gram-positive pleomorphic rods isolated from dental plaque and gingival crevice. | a typical gram-positive pleomorphic aerobe is rothia dentocariosa. however, there exist many organisms having similar characteristics (rothia-like organisms). the purpose of this study is to isolate rothia dentocariosa and rothia-like organisms from the healthy and diseased sites of the oral cavity and to clarify the characteristics of those organisms. a total of 342 strains were isolated in this study, and 188 strains were identified as gram-positive pleomorphic rods. seventy-seven typical stra ... | 1980 | 6928808 |
| [frequency of the occurrence of rothia dentocariosa in the oral cavity]. | | 1980 | 6937298 |
| [experimental infection in the mouse by a rothia dentocariosa strain]. | | 1980 | 6937304 |
| blastogenic response of human lymphocytes to antigens of rothia dentocariosa. | peripheral blood lymphocytes were isolated from 20 individuals with varying degrees of periodontal health and classified as either normal, having acute gingivitis (gv), or chronic periodontitis (pd). crude cell wall and cytoplasmic antigens were derived from rothia dentocariosa (rd), were applied to lymphocyte microcultures, and subjected to radioactive thymidine; the resulting lymphocyte blastogenesis (lb) was surveyed with a scintillation counter. all three groups displayed statistically simil ... | 1982 | 6953091 |
| a numerical taxonomic study of members of the actinomycetaceae and related taxa. | two hundred and twenty-two representatives of the actinomycetaceae and related taxa, including reference cultures, received strains and fresh isolates, were tested using 124 unit characters. the data were examined using numerical taxonomic techniques with various coefficients and average linkage clustering; the variation in composition of the clusters obtained from the different coefficients was slight. most species included in the study formed discrete phena, which exhibited good differential c ... | 1981 | 7343641 |
| rothia dentocariosa endocarditis complicated by an abdominal aneurysm. | | 1994 | 8011853 |
| cellular fatty acid composition and phenotypic and cultural characterization of cdc fermentative coryneform groups 3 and 5. | seventy strains of fermentative, asporogenous, gram-positive coccobacilli or short rods form two closely related groups which have been designated cdc fermentative coryneform groups 3 (32 strains, xylose fermenters) and 5 (38 strains, xylose nonfermenters). the two taxa are otherwise similar to each other phenotypically and culturally and by a distinctive staphylococcus-like odor and by cellular fatty acid (cfa) composition. cdc group 3 and cdc group 5 strains have been isolated from clinical so ... | 1994 | 8051247 |
| rothia dentocariosa endocarditis. | despite its presence normally in the mouth, r dentocariosa appears rarely to cause infection outside the oral cavity. there is no doubt, however, as additional reports accumulate, that this organism should be recognized as having the ability to cause a serious illness in humans. in addition, in vivo experience seems to suggest that a penicillin regimen should remain first-line therapy for this infection, with the efficacy of other agents remaining unproved. | 1993 | 8128689 |
| rothia dentocariosa endocarditis complicated by perivalvular abscess. | a 35-year-old man with a history of intravenous drug use developed endocarditis due to rothia dentocariosa that was complicated by a perivalvular abscess. despite combined medical and surgical treatment, abscess formation progressed following aortic valve replacement, and the patient died during a second operative procedure. this is the sixth case of rothia dentocariosa endocarditis reported in the english-language literature, and to our knowledge, the only case in which a perivalvular abscess h ... | 1993 | 8268361 |
| prosthetic valve endocarditis due to rothia dentocariosa. | | 1993 | 8286658 |
| native and prosthetic valve endocarditis caused by rothia dentocariosa: diagnostic and therapeutic considerations. | three cases, one each of native valve, prosthetic valve and composite graft endocarditis caused by rothia dentocariosa are described. the first patient presented with multiple brain abscesses and severe congestive heart failure due to destructive endocarditis with large vegetations on the mitral valve. he died shortly after emergency valve replacement. gram-positive coccoid rods were identified in the vegetations of the excised mitral valve. the second patient had a r. dentocariosa endocarditis ... | 1997 | 9039533 |
| an investigation of the intra-generic structure of rothia by pyrolysis mass spectrometry. | previous studies of the genus rothia have indicated that members of the only species, rothia dentocariosa, are heterogeneous and may form more than one species. to study the intrageneric taxonomic structure of the rothia taxon eighteen strains identified as r. dentocariosa, including reference organisms from culture collections (3 strains), isolates from healthy subjects (5 strains) and from clinical sources (10 strains) were examined using pyrolysis mass spectrometry. the ordination plots of th ... | 1997 | 9060153 |
| [cat-scratch disease: historical, clinical, phylogenetic and taxonomic aspects]. | the cat-scratch disease (csd) is known as a nosological entity since 1950. it was diagnosed by the clinical symptoms, epidemiologic data, and the intracutaneous test of hanger and rose. the aetiologic agent is bartonella (formerly rochalimaea) henselae occurring in thirty to fifty percent of healthy cats. the gramnegative alpha-2-proteobacteria cause the csd but also fever in healthy humans. patients suffering from aids show bacillary angiomatosis, bacillary peliosis hepatis, endocarditis, and s ... | 1997 | 9198973 |
| rothia dentocariosa: two new cases of pneumonia revealing lung cancer. | pneumonia due to rothia dentocariosa is extremely rare: only 1 case of pneumonia due to this pathogen has been reported in an immunocompromised patient with acute myelocytic leukemia. in this report, 2 new cases of rothia dentocariosa pneumonia are described in 2 patients with lung cancer. this opportunistic pulmonary agent, belonging to the oro-pharyngeal flora, is also known to cause endocarditis in patients with underlying cardiac pathology. | 1997 | 9360260 |
| case of triple endocarditis caused by rothia dentocariosa and results of a survey in france. | this is the first case of endocarditis in which rothia dentocariosa was cultured from three affected valves. in addition, the records of two microbiology laboratories in france showed that r. dentocariosa was rarely involved in severe infection and that positive blood cultures were not associated with endocarditis. | 1998 | 9431976 |
| coryneform bacteria in throat cultures of healthy individuals. | throat swabs from 113 healthy individuals from hamburg, germany, and zurich, switzerland, were investigated for coryneform bacteria with nonselective and selective media. ninety specimens contained 123 strains. surprisingly, 76% of them were strains of corynebacterium durum (47%) and rothia dentocariosa (29%). only two were strains of corynebacterium pseudodiphtheriticum, and none were strains of c. striatum, c. amycolatum, or c. diphtheriae. | 1998 | 9650969 |
| rothia dentocariosa endocarditis and aortic root abscess. | we report a case of endocarditis and associated paravalvular abscess due to rothia dentocariosa which did not respond to antibiotic therapy. nine case reports describing endocarditis caused by this organism, formerly thought to be non-pathogenic, have been recorded in the literature. the isolates were extremely sensitive to penicillin, and eight patients responded to this agent which, in most cases, was used in combination with an aminoglycoside. surgery is recommended for an associated abscess, ... | 1998 | 9892536 |
| peritonitis due to rothia dentocariosa in a patient receiving continuous ambulatory peritoneal dialysis. | | 1999 | 10194109 |
| rothia endocarditis in a child. | rothia dentocariosa, an organism inhabiting the oral flora, has been reported to cause endocarditis in adults but not in children. most patients reported with rothia endocarditis have a history of poor dentition. we report a case of rothia endocarditis in a child with congenital heart disease without other known risk factors. | 1999 | 10456724 |
| antimicrobial activity of synthetic salivary peptides against voice prosthetic microorganisms. | to investigate whether synthetic salivary antimicrobial peptides have an inhibitory effect on the growth of bacteria and yeasts isolated from used silicone rubber voice prostheses. | 2000 | 10680938 |
| a case of peritonitis due to rothia dentocariosa in a capd patient. | | 2000 | 10809253 |
| characterization of a rothia-like organism from a mouse: description of rothia nasimurium sp. nov. and reclassification of stomatococcus mucilaginosus as rothia mucilaginosa comb. nov. | an unknown, gram-positive, ovoid-shaped bacterium isolated from the nose of a mouse was subjected to a polyphasic taxonomic analysis. comparative 16s rrna gene sequencing demonstrated that the unknown organism was a member of the family micrococcaceae and possessed a specific phylogenetic association with rothia dentocariosa and stomatococcus mucilaginosus. phenotypically, the bacterium closely resembled r. dentocariosa and s. mucilaginosus but could be distinguished from these species by bioche ... | 2000 | 10843069 |
| investigation of infectious organisms causing pericoronitis of the mandibular third molar. | the purpose of the study was to identify the most frequently encountered pyogenic organisms involved in pericoronitis to permit more targeted antibiotic therapy. | 2000 | 10847281 |
| vertebral osteomyelitis complicating rothia dentocariosa endocarditis. | | 2000 | 10968333 |
| rothia dentocariosa endocarditis complicated by multiple intracranial hemorrhages. | rothia dentocariosa is a gram-positive rod found commonly as part of the normal flora of the mouth. it rarely causes clinical disease. subacute infective endocarditis has been the most commonly reported r dentocariosa infection, and extracardiac complications occur frequently. solitary intracranial hemorrhages have been reported in two cases. we describe the first case of infective endocarditis complicated by the sequential and unusually prolonged development of multiple new intracranial hemorrh ... | 2001 | 11332915 |
| air-flow resistances of silicone rubber voice prostheses after formation of bacterial and fungal biofilms. | laryngectomized patients use silicone rubber voice prostheses to rehabilitate their voice. however, biofilm formation limits the lifetime of voice prostheses by causing leakage or an increased air-flow resistance and the prosthesis has to be replaced. to determine which bacterial or yeast strains, isolated from explanted voice prostheses, contribute most to increases in air-flow resistance of silicone rubber voice prostheses, biofilms consisting of either a bacterial or a yeast strain were grown ... | 2001 | 11410901 |
| a case of rothia dentocariosa endophthalmitis. | | 2001 | 11757983 |
| adhesive interactions between voice prosthetic yeast and bacteria on silicone rubber in the absence and presence of saliva. | biofilms on silicone rubber voice prostheses are the major cause for frequent failure and replacement of these devices. the presence of both bacterial strains and yeast has been suggested to be crucial for the development of voice prosthetic biofilms. adhesive interactions between candida albicans, candida krusei, and candida tropicalis with 14 bacterial strains, all isolated from explanted voice prostheses were investigated in a parallel plate flow chamber. bacteria were first allowed to adhere ... | 2001 | 11816977 |
| structure of the major glycolipid from rothia dentocariosa. | structural studies of the major glycolipid isolated from rothia dentocariosa were carried out by specific chemical degradation and nuclear magnetic resonance spectroscopy. the glycolipid was found to be a dimannosylacylmonoglyceride in which the carbohydrate part was the glycerol-linked dimannoside alpha-d-manp-(1-->3)-alpha-d-manp-(1-->3)-sn-gro, and the internal mannose was esterified at c-6 by fatty acid residue. the other fatty acyl chain substituted the primary methylene position of glycero ... | 2002 | 11825622 |
| whole cell protein and partial 16s rrna gene sequence analysis suggest the existence of a second rothia species. | objective: to subject ten clinical isolates grouped together based on their biochemical and microbiological profile to further investigations aimed at correct species identification. methods: the 16s rrna gene was partially sequenced using nested amplification. whole cell protein analysis (sds-page) and cluster analysis were performed on the 10 strains and also for comparison on 31 reference strains. the api coryne biochemical kit as well as api 20 strep were used for analysis of the phenotypic ... | 1998 | 11864340 |
| comparison of the microbial composition of voice prosthesis biofilms from patients requiring frequent versus infrequent replacement. | this study was performed to establish a possible difference in biofilm composition in patients who require frequent versus infrequent prosthesis replacement. only groningen button voice prostheses that were removed because of increased airflow resistance or leakage of food or liquids through the prosthesis were considered for this study. these prostheses were selected from a total of 692 failed voice prostheses over a 2-year evaluation period. the failed voice prostheses were subdivided into a s ... | 2002 | 11915880 |
| three cases of rothia dentocariosa bacteraemia: frequency in denmark and a review. | three cases of non-endocarditis-associated rothia dentocariosa bacteraermia occurred in viborg county within the space of a year, whereas no cases have been registered in other parts of denmark during the last 10 y. two patients wore dentures but had no history of oral infection, while in the last patient a tooth abscess was detected on examination. r. dentocariosa is a common inhabitant of the oral cavity and the causative agent of a wide spectrum of infectious symptoms. it is only rarely ident ... | 2002 | 11928857 |
| [catalase-negative rothia dentocariosa: evaluation of additional descriptive tests]. | rothia dentocariosa is one of the human oral flora members, and classified in the group of coryneform bacteria which are taxonomically heterogeneous. although r. dentocariosa is considered as a contaminant in throat cultures generally, it may be the causative infectious agent in the presence of predisposing factors. the catalase activity which is used as a simple and initial identification test, becomes contradictory because of the detection of the catalase negative strains recently. the aim of ... | 2002 | 12476766 |
| rothia dentocariosa, endocarditis and mycotic aneurysms: case report and review of the literature. | rothia dentocariosa is a rare cause of endocarditis. it occurs most frequently in patients with prior heart conditions. although the clinical course is typically subacute, it has a high rate of complications. in particular, the reported incidence of mycotic aneurysms is as high as 25%. penicillin is the treatment of choice, but additional complications may necessitate prompt surgical intervention. as far as we know, this paper reports the first case of repeated subarachnoid hemorrhages due to r. ... | 2003 | 12667255 |
| influence of different combinations of bacteria and yeasts in voice prosthesis biofilms on air flow resistance. | laryngectomized patients use silicone rubber voice prostheses to rehabilitate their voice. however, biofilm formation limits the lifetime of voice prostheses. the presence of particular combinations of bacterial and yeast strains in voice prosthesis biofilms has been suggested to be crucial for causing valve failure. in order to identify combinations of bacterial and yeast strains causative to failure of voice prostheses, the effects of various combinations of bacterial and yeast strains on air ... | 2003 | 12755479 |
| efficacy of amikacin combinations for nocardiosis. | we isolated five bacterial strains from patients diagnosed as having nocardiosis. bacterial species were identified based on the similarities in the nucleotide sequences of 16s ribosomal rnas. three of the five strains were identified as nocardia asteroids, but unexpectedly other two were streptomyces hygroscopicus and rothia dentocariosa. the latter two species are not members of the family nocardiaceae. we investigated the susceptibilities of these five strains to the following nine antimicrob ... | 2003 | 14649737 |
| [endocarditis due to rothia dentocariosa complicated by septic cerebral embolism]. | | 2004 | 15056449 |
| rothia dentocariosa: taxonomy and differential diagnosis. | as recent external quality control results have shown, the diagnosis of rothia dentocariosa infection still presents problems for clinical laboratories. this review describes the taxonomy, as well as the chemotaxonomic, morphological and biochemical characteristics, of this organism, and surveys bacteria that may be confused with rothia dentocariosa. | 2004 | 15113315 |
| rothia aeria sp. nov., rhodococcus baikonurensis sp. nov. and arthrobacter russicus sp. nov., isolated from air in the russian space laboratory mir. | four gram-positive bacteria, strains a1-17b(t), a1-22(t), a1-3(t) and a1-8, isolated from the air in the russian space laboratory mir, were subjected to a polyphasic taxonomic study. phylogenetic analysis of the bacteria based on their 16s rdna sequence showed that they belong to the genera rothia (a1-17b(t)), rhodococcus (a1-22(t)) and arthrobacter (a1-3(t) and a1-8). morphological, physiological, chemotaxonomic and genomic characteristics supported the assignments of these strains to these gen ... | 2004 | 15143031 |
| molecular analysis of the microflora associated with dental caries. | molecular techniques have revealed many novel, presumed unculturable, taxa in oral infections. the aim of this study was to characterize the bacterial community of the middle and advancing front of carious dental lesions by cultural and molecular analyses. samples were collected with a hand excavator from five teeth with carious lesions involving dentine. samples were cultured on blood agar and rogosa agar incubated in air plus 5% co(2) and on fastidious anaerobe agar anaerobically. dna was also ... | 2004 | 15243054 |
| biosurfactant from lactococcus lactis 53 inhibits microbial adhesion on silicone rubber. | the ability of biosurfactant obtained from the probiotic bacterium lactococcus lactis 53 to inhibit adhesion of four bacterial and two yeast strains isolated from explanted voice prostheses to silicone rubber with and without an adsorbed biosurfactant layer was investigated in a parallel-plate flow chamber. the microbial cell surfaces and the silicone rubber with and without an adsorbed biosurfactant layer were characterized using contact-angle measurements. water contact angles indicated that t ... | 2004 | 15290139 |
| identification of some charcoal-black-pigmented cdc fermentative coryneform group 4 isolates as rothia dentocariosa and some as corynebacterium aurimucosum: proposal of rothia dentocariosa emend. georg and brown 1967, corynebacterium aurimucosum emend. yassin et al. 2002, and corynebacterium nigricans shukla et al. 2003 pro synon. corynebacterium aurimucosum. | sixty-three clinical isolates of charcoal-black-pigmented, gram-positive coryneform rods were received for identification by the centers for disease control and prevention (cdc) and were provisionally designated cdc fermentative coryneform group 4 (fcg4). forty-five of these were characterized by morphological, physiologic, antimicrobial susceptibility, cellular fatty acids, 16s rrna gene sequencing, and dna-dna hybridization analyses. nitrate reduction, cellular fatty acid analysis, 16s rrna ge ... | 2004 | 15365010 |
| rothia dentocariosa septicemia without endocarditis in a neonatal infant with meconium aspiration syndrome. | rothia dentocariosa, a gram-positive coccoid- to rod-shaped bacterium with irregular morphology, is a rare cause of bacteremia in patients without endocarditis. we report the first case of r. dentocariosa septicemia without endocarditis, which occurred in a neonatal infant with meconium aspiration syndrome. | 2004 | 15472374 |
| evaluation of bacterial nitrate reduction in the human oral cavity. | it is hypothesized that the enterosalivary nitrate circulation encourages nitrate reducing bacteria to reside within the oral cavity. nitrite production may then limit the growth of acidogenic bacteria as a result of the production of antimicrobial oxides of nitrogen, including nitric oxide. this study was carried out with 10 subjects to characterize oral nitrate reduction and identify the bacteria responsible. nitrate reduction varied between individuals (mean 85.4 +/- 15.9 nmol nitrite min(-1) ... | 2005 | 15693824 |
| severe acute tonsillitis caused by rothia dentocariosa in a healthy child. | a 4-year-old japanese girl developed a sore throat and high fever. her tonsils were enlarged, red and covered with a thick white membrane. there was marked leukocytosis (26,600 leukocytes per mm) and elevated c-reactive protein levels (23.3 mg/dl). rothia dentocariosa was recovered from the throat swab; many gram-positive cocci were observed in the smear from the pseudomembrane covering the tonsil. | 2005 | 15876953 |
| rothia dentocariosa endocarditis complicated by multiple cerebellar hemorrhages. | a rare case of rothia dentocariosa endocarditis after oral surgery is presented. the patient had repeated cerebellar hemorrhages occurring over months as the sole manifestation of disease. he was successfully treated with penicillin g and gentamicin with good outcome. | 2005 | 16243473 |
| evaluation of the bactec microbial detection system for culturing miscellaneous sterile body fluids. | this study sought to evaluate the efficacy of the bactec blood culture system for culturing sterile body fluids, in comparison with traditional culture methods. a total of 906 specimens were cultured using both conventional media and the bactec detection system. differences in numbers of isolates determined by each system were compared. clinically significant microorganisms were isolated from 15.3% (139) of 906 specimens by both the bactec system and conventional culture, whereas for 8.8% (80) o ... | 2006 | 16364602 |
| inhibition of microbial adhesion to silicone rubber treated with biosurfactant from streptococcus thermophilus a. | microbial adhesion of four bacterial and two yeast strains isolated from explanted voice prostheses to silicone rubber before and after conditioning with a biosurfactant obtained from the probiotic bacterium streptococcus thermophilus a was investigated in a parallel plate flow chamber. the silicone rubber with and without an adsorbed biosurfactant layer was characterized using contact angle measurements. water contact angles indicated that the silicone rubber surface with adsorbed biosurfactant ... | 2006 | 16420603 |
| rothia dentocariosa sepsis in a pediatric renal transplant recipient having post-transplant lymphoproliferative disorders. | rothia dentocariosa (rd) is a gram-positive rod that colonizes the human oral cavity and can cause infective endocarditis. | 2006 | 16677365 |
| rothia dentocariosa isolated from a corneal ulcer. | rothia dentocariosa is a common commensal in the oropharyngeal cavity but a rare human pathogen. ocular culture has been documented only twice previously, both from vitreous samples taken in the context of endophthalmitis. these cases, and other reports of human rothia infection, have proposed hematogenous spread from the oropharynx as the mode of transmission. | 2006 | 17133072 |
| caries-related plaque microcosm biofilms developed in microplates. | in vivo dental plaque biofilms consist of complex communities of oral bacteria that are a challenge to replicate in vitro. the aim of this investigation was to establish human dental plaque microcosms in microplates to reflect conditions that are relevant to dental caries. microcosm plaque biofilms were initiated from the saliva of two different donors, grown for up to 10 days in 24-welled microplates on thermanox coverslips in various types of artificial saliva with and without sucrose, which w ... | 2007 | 17311629 |
| rothia dentocariosa bacteremia in children: report of two cases and review of the literature. | rothia dentocariosa, a pleomorphic, fastidious, gram-positive rod, is a normal inhabitant of the oropharynx. it is a well-known causative agent of dental plaques and periodontal disease. generally regarded as of low virulence to humans, r. dentocariosa has been increasingly recognized as a pathogen in adults and often associated with infective endocarditis. it should not necessarily be regarded as a contaminant when the isolate comes from areas other than the oropharynx, especially from the bloo ... | 2007 | 17493907 |
| intrauterine fetal death associated with rothia dentocariosa: a case report. | we report a case of intrauterine fetal death at term with a possible association to an oral bacterium, rothia dentocariosa. a healthy primiparous woman was admitted at term with an intrauterine fetal death after an uncomplicated pregnancy. r. dentocariosa was found in the fetal blood culture. | 2007 | 17980173 |
| recurrent chronic ambulatory peritoneal dialysis-associated infection due to rothia dentocariosa. | rothia dentocariosa is a commensal organism of the human oropharynx. clinical infection due to this organism is rare. a case of recurrent peritoneal dialysis-related peritonitis caused by r dentocariosa and a review of the literature is reported. isolation of r dentocariosa from dialysate fluid should not be dismissed as a contaminant. although there are no interpretive criteria for antimicrobial susceptibility testing, r dentocariosa appears to be susceptible to a variety of antibiotics includi ... | 2004 | 18159489 |
| mlpa diagnostics of complex microbial communities: relative quantification of bacterial species in oral biofilms. | a multitude of molecular methods are currently used for identification and characterization of oral biofilms or for community profiling. however, multiplex pcr techniques that are able to routinely identify several species in a single assay are not available. multiplex ligation-dependent probe amplification (mlpa) identifies up to 45 unique fragments in a single tube pcr. here we report a novel use of mlpa in the relative quantification of targeted microorganisms in a community of oral microbiot ... | 2008 | 18824042 |
| comparisons of subgingival microbial profiles of refractory periodontitis, severe periodontitis, and periodontal health using the human oral microbe identification microarray. | this study compared the subgingival microbiota of subjects with refractory periodontitis (rp) to those in subjects with treatable periodontitis (grs = good responders) or periodontal health (ph) using the human oral microbe identification microarray (homim). | 2009 | 19722792 |
| septic arthritis caused by rothia dentocariosa in a patient with rheumatoid arthritis receiving etanercept therapy. | | 2009 | 19966198 |
| prevalence and diversity of microbes in the amniotic fluid, the fetal inflammatory response, and pregnancy outcome in women with preterm pre-labor rupture of membranes. | the role played by microbial invasion of the amniotic cavity (miac) in preterm pre-labor rupture of membranes (pprom) is inadequately characterized, in part because of reliance on cultivation-based methods. | 2010 | 20331587 |
| microbiological profiles in saliva and supragingival plaque from caries-active adolescents before and after a short-term daily intake of milk supplemented with probiotic bacteria - a pilot study. | the aim of the present pilot study was to investigate the microbial profile in saliva and supragingival plaque samples collected from caries-active adolescents before and after a daily short-term intake of milk supplemented with the probiotic bacteria. | 2010 | 21180676 |
| rothia dentocariosa endocarditis with mitral valve prolapse: case report and brief review. | | 2011 | 21311946 |
| detection of nine microorganisms from the initial carious root lesions using a taqman-based real-time pcr. | oral diseases (2011) objective: the purpose of this study was to quantify nine selected cariogenic bacteria in plaque from sound root surfaces and initial carious root lesions using taqman pcr and to analyse a putative dependence on the kind of initial periodontal treatment. material and methods: fifty-four subjects with generalized chronic periodontitis were randomly allocated to one of the following initial periodontal therapies: full-mouth disinfection, full-mouth scaling and root planing o ... | 2011 | 21605286 |
| [pneumonia and rothia dentocariosa]. | | 2011 | 21908119 |