| emended descriptions of prevotella denticola, prevotella loescheii, prevotella veroralis, and prevotella melaninogenica. | during studies of human periodontal disease, a number of bacterial strains were encountered that, on the basis of results of standard biochemical tests, appeared to be prevotella buccalis, prevotella denticola, prevotella melaninogenica, or prevotella loescheii. however, use of the standard biochemical tests, cellular fatty acid analyses, and the polyacrylamide gel electrophoresis patterns of soluble proteins resulted in conflicting identifications of these strains. the results of tests for cell ... | 1992 | 1390106 |
| transfer of conjugal elements in oral black-pigmented bacteroides (prevotella) spp. involves dna rearrangements. | conjugal genetic elements in isolates of oral black-pigmented bacteroides denticola (prevotella denticola) and b. intermedius (p. intermedia) transfer tetracycline and penicillin resistance in the absence of plasmids. transverse alternating-field electrophoresis of restricted chromosomal dnas from transconjugants revealed arrangements indicating that transfer and insertion can involve more than one 60-kb copy of the elements and occurs at strongly preferred sites in the recipient chromosome. | 1992 | 1624474 |
| rapid presumptive identification of black-pigmented gram-negative anaerobic bacteria by using 4-methylumbelliferone derivatives. | a rapid method for presumptive identification of black-pigmented gram-negative anaerobic rods was developed. using filter paper spot tests for indole production, sialidase, alpha-glucosidase, beta-glucosidase, alpha-fucosidase, and trypsinlike enzyme activities, 100% of porphyromonas gingivalis, prevotella intermedia, and bacteroides levii and 89% of prevotella corporis isolates were correctly identified to the species level. porphyromonas asaccharolytica and porphyromonas endodontalis could not ... | 1991 | 1774320 |
| comparative in vitro activity of cefpodoxime against anaerobes other than bacteroides fragilis. | to assess the in vitro activity of cefpodoxime against anaerobic respiratory tract and oropharyngeal pathogens 77 strains belonging to 18 gram-negative and 7 gram-positive species were studied by means of agar dilution tests. for comparison cefuroxime, amoxicillin, amoxicillin + clavulanic acid and clindamycin were also tested. cefpodoxime was found to be active at concentrations of less than or equal to 0.125 mg/l against prevotella oralis, prevotella buccalis, prevotella bivia, porphyromonas a ... | 1991 | 1800380 |
| the incidence of periodontopathic microorganisms in young children. | thirty-six children in 4 cohorts of 0-1 week, 1-6 months, 1-2 years and 2-2 1/2 years of age were examined for the presence of black-pigmented bacteroides species and some other bacteria suspected of being involved in the subsequent development of periodontal destruction. none of the sought-after bacteria were detected in the first week of life. bacteroides intermedius and bacteroides melaninogenicus were detected as early as 1 month after birth. both of these bacteria were detected in 16-37% of ... | 1990 | 2087345 |
| detection of conjugal transfer systems in oral, black-pigmented bacteroides spp. | oral, black-pigmented bacteroides spp. are important pathogens in oral anaerobic infections and dental disease. we detected conjugation systems in isolates of bacteroides denticola and bacteroides intermedius that transferred tetracycline resistance (tetr) and penicillin resistance to bacteroides buccae and to bacteroides fragilis, an intestinal bacteroides species. a cloned tetr gene from b. fragilis hybridized to the transferable tetr locus in the oral strains, indicating that genetic exchange ... | 1990 | 2294095 |
| [purification and some properties of neuraminidase from the culture medium of bacteroides loescheii atcc 15930]. | the purpose of this study is to investigate the mechanism on enhanced hemagglutination caused by neuraminidase from bacteroides in an aspect of zeta-potential levels on erythrocytes and inhibitors on hemagglutination activity. the neuraminidase from the culture medium of bacteroides loescheii atcc 15930 was purified by ultrafiltration followed by deae-sephacel anion exchange chromatography, fast protein, polypeptide, polynucleotide, liquid chromatography using mono p column and finally high perf ... | 1989 | 2488923 |
| prevalence of black-pigmented bacteroides species in root canal infections. | the prevalence of black-pigmented bacteroides species in the root canals of 72 teeth with apical periodontitis was evaluated. twenty-two of the canals contained one or more species of black-pigmented bacteroides. bacteroides intermedius (14 strains) and bacteroides endodontalis (5 strains) were most common. of the species bacteroides gingivalis, bacteroides loeschei, and bacteroides denticola, 2, 3, and 1 strains, respectively, were isolated. the median number of bacterial cells recovered from t ... | 1989 | 2607261 |
| use of the rapid-ana system to screen for enzyme activities that differ among species of bile-inhibited bacteroides. | the rapid-ana system (innovative diagnostics systems, inc., atlanta, ga.) was used to test 102 strains of 14 species of phenotypically similar bile-inhibited bacteroides from humans. bacteroides oris, bacteroides veroralis, bacteroides buccalis, bacteroides melaninogenicus, bacteroides loescheii, and bacteroides denticola had very similar enzyme activity profiles. clear differentiation of these six species by the rapid-ana system was not possible, but tests for arginine aminopeptidase and beta-g ... | 1986 | 2871042 |
| relationship between enzyme activities involved in oxygen metabolism and oxygen tolerance in black-pigmented bacteroides. | in this study, the relationship between enzyme activities involved in oxygen metabolism and the degrees of oxygen tolerance in black-pigmented bacteroides was investigated. all strains of bacteroides tested possessed the activities of nadh oxidase and superoxide dismutase, whereas the activities of catalase and peroxidases were not detected in the cell-free extracts. there were relatively high correlations between oxygen tolerance and activity of either nadh oxidase or superoxide dismutase. the ... | 1988 | 3166001 |
| the role of black-pigmented bacteroides in human oral infections. | today, 10 black-pigmented bacteroides (bpb) species are recognized. the majority of these species can be isolated from the oral cavity. bpb species are involved in anaerobic infections of oral and non-oral sites. in the oral cavity, bpb species are associated with gingivitis, periodontitis, endodontal infections and odontogenic abscesses. cultural studies suggest a specific role of the various bpb species in the different types of infection. bacteroides gingivalis is closely correlated with dest ... | 1988 | 3280611 |
| isolation, characterization and ecological distribution of recently recognized propionic acid-negative bacteroides species from human sources. | 140 strains of anaerobic, gram-negative, propionate-negative, non-pigmented rods (bacteroides oralis group) were isolated from normal flora and from clinical specimens. they were characterized by physiological tests, gas chromatography of the acid end products, and determination of the g + c content of their dna. in addition, their distribution in the various biotopes of the human body (oropharyngeal tract, genitourinary tract, and gut) and in clinical specimens was investigated. the strains cou ... | 1985 | 4050192 |
| taxonomy of anaerobes: present state of the art. | results of nucleic acid studies, which indicate relationships among strains and species more clearly than do usual phenotypic tests, have led to new bacteriologic nomenclature. some major changes in bacteroides include the recognition of three species (bacteroides melaninogenicus, bacteroides denticola, and bacteroides loescheii) formerly grouped in b. melaninogenicus subspecies melaninogenicus; two species (bacteroides intermedius with two closely related homology groups and bacteroides corpori ... | 1984 | 6201990 |
| characterisation of black-pigmented anaerobes isolated from diseased and healthy periodontal sites. | prevotella intermedia has recently been re-defined and a new species, prevotella nigrescens has been proposed. however, there is little data available on the incidence of these new species in periodontal health or disease. black-pigmented anaerobes isolated from diseased and healthy subgingival sites were identified by serotyping, sds-page and physiological tests. in adult periodontitis subjects, 64% of active sites, 35.7% of inactive sites and 38.5% of healthy sites yielded black-pigmented anae ... | 1995 | 7562320 |
| characterization of inhibitory effects of suspected periodontopathogens on osteogenesis in vitro. | by using an in vitro bone-forming culture system, the chick periosteal osteogenesis (cpo) model, the direct effects on osteogenesis of sonicated extracts derived from oral bacteria were examined. both extracts from bacterial species having strong associations with periodontal diseases (porphyromonas gingivalis, actinobacillus actinomycetemcomitans, and prevotella intermedia, hereinafter referred to as suspected periodontopathogens) and extracts from species not correlated with periodontal diseas ... | 1995 | 7642257 |
| sensitivity of porphyromonas and prevotella species in liquid media to argon laser. | the phototoxicity of argon laser irradiation was studied in aqueous suspensions of porphyromonas endodontalis (american type culture collection [atcc] 35406), porphyromonas gingivalis (atcc 33277), prevotella denticola (atcc 33184) and two strains of prevotella intermedia (atcc 15033 and 49046), all "black-pigmented bacteria," bpb, that accumulate cellular porphyrins. several of these species have been implicated in the etiology of periodontal disease. non-black-pigmented bacteria were also stud ... | 1995 | 7740086 |
| the oral gram-negative anaerobic microflora in young children: longitudinal changes from edentulous to dentate mouth. | eruption of primary teeth has a great influence on the oral environment by providing suitable niches for bacterial colonization. the composition of oral gram-negative anaerobic microflora was investigated in 21 young children (mean age 32 months) with primary dentition. the bacterial findings of samples were compared with those of the same children collected at their edentulous infant period (mean age 3 months). during the primary period, 2 samples were collected from each child: a sample with d ... | 1994 | 7936718 |
| tetracycline resistance in periodontal pathogens. | antimicrobial agents are used in combination with debridement to eliminate putative periodontal pathogens, including porphyromonas gingivalis, prevotella intermedia, and actinobacillus actinomycetemcomitans, from diseased tissues. the most frequently used antimicrobial agents are the tetracyclines. however, these agents are not effective in some patients. this lack of efficacy may be due to antimicrobial resistance. as many as 75% of the bacteria in the subgingival flora may be resistant to tetr ... | 1993 | 8324137 |
| characterization of hemolytic bacteria in subgingival plaque. | three-quarters of the patients with periodontal diseases surveyed in this study had one or more distinct types of hemolytic bacteria in their subgingival plaque. twelve different species of bacteria were identified, belonging to five genera (actinomyces, streptococcus, staphylococcus, prevotella, and actinobacillus). nine hemolytic isolates, consisting of four prevotella denticola strains, two actinomyces naeslundii genospecies 2 strains, and one each of p. melaninogenica, streptococcus constell ... | 1993 | 8496781 |
| bacteriologic findings in tonsillitis and pericoronitis. | bacteriologic samples from 31 young men were cultured quantitatively for aerobes and anaerobes; these samples included 31 specimens of tonsils (16 infected and 15 healthy), 16 specimens from pericoronal pockets of lower third molars (11 infected and 5 symptom-free), and 6 postoperative specimens from lower-third-molar extraction sockets. anaerobes were isolated more often from infected third molars than from infected tonsils (14.5 isolates vs. 8.4 isolates, respectively; p < .001). infected tons ... | 1996 | 8816129 |
| an investigation into the use of sds-page of cell surface extracts and proteolytic activity to differentiate prevotella nigrescens and prevotella intermedia. | by comparison of the cell surface proteins derived from the outer membrane and fibrils from 14 prevotella intermedia and 19 prevotella nigrescens strains using sds and analysed by sds-page, it was possible to distinguish the two species. a polypeptide of approx. 21 kda distinguished p. intermedia strains, whereas two polypeptides of approx. 18 and 22 kda could be used to identify p. nigrescens strains. four other human oral black pigmented bacterial species (porphyromonas gingivalis, prevotella ... | 1996 | 8869494 |
| microbial findings of deep peri-implant bone defects. | the objective of this study was to examine inflammatory tissue in deep peri-implant bone pockets (> 5 mm) for anaerobic bacteria colonization. the peri-implant inflammatory tissue of bone defects from 12 edentulous patients with 18 unsuccessful implants (imz type) was removed after surgical opening of the defects. after grinding the tissue with glass beads in nutrient solution, an aliquot of the suspension was plated and incubated on appropriate culture media. the quantitative and qualitative di ... | 1997 | 9048462 |
| prevalence of porphyromonas and prevotella species in the dental plaque of dogs. | the prevalence and populations of porphyromonas and prevotella species were determined in three samples of dental plaque from each of 34 healthy dogs. porphyromonas gingivalis was present in 68 per cent of the dogs and 47 per cent of the plaque samples. the counts of p gingivalis increased with age (p < 0.1), the amount of plaque (p < 0.05) and the degree of gingivitis (p < 0.1). prevotella intermedia was present in 44 per cent of the dogs and 23 per cent of the plaque samples. the counts of p i ... | 1997 | 9050176 |
| inhibition of prevotella and capnocytophaga immunoglobulin a1 proteases by human serum. | oral prevotella and capnocytophaga species, regularly isolated from periodontal pockets and associated with extraoral infections, secret specific immunoglobulin a1 (iga1) proteases cleaving human iga1 in the hinge region into intact fab and fc fragments. to investigate whether these enzymes are subject to inhibition in vivo in humans, we tested 34 sera from periodontally diseased and healthy individuals in an enzyme-linked immunosorbent assay for the presence and titers of inhibition of seven pr ... | 1997 | 9220164 |
| fermentation product analysis in the identification of black-pigmented bacteria from periodontitis. | a quantitative procedure is described for the analysis of fermentation products of eight representative black-pigmented gram-negative anaerobic bacterial strains (porphyromonas gingivalis 381, porphyromonas gingivalis atcc 33277, prevotella intermedia atcc 25611, prevotella nigrescens atcc 33563, prevotella melaninogenica atcc 25845, prevotella denticola atcc 33185, and prevotella loescheii atcc 15930) from oral sites in humans, using gas-liquid chromatography. this procedure for the identificat ... | 1997 | 9345789 |
| dental plaque flora of the dog with reference to fastidious and anaerobic bacteria associated with bites. | animal bite wounds are amongst the most common types of traumatic injuries in humans. the organisms isolated from these wounds generally reflect the oral flora of the biting animal, and may be fastidious in nature and difficult to identify. this study was undertaken to determine the prevalence of eikenella corrodens, actinobacillus actinomycetemcomitans, porphyromonas and prevotella spp. in supragingival dental plaque collected from the right maxillary canine and carnassial teeth and the right m ... | 1997 | 9571899 |
| characterization of a novel n-acetylneuraminic acid-specific fusobacterium nucleatum pk1594 adhesin. | fusobacterium nucleatum has been identified as significantly associated with sites with active periodontal disease and, as a group, the oral fusobacteria coaggregate with members of all oral bacteria genera tested. monoclonal antibodies were prepared and used in conjunction with other potential inhibitors, such as simple sugars and amino acids, to characterize coaggregation interactions, of f. nucleatum pk1594. four unique monoclonal antibodies, 5h11, 14c7, 19f2 and 29c12, were obtained by their ... | 1998 | 9573822 |
| in vitro antimicrobial activity of propolis and arnica montana against oral pathogens. | arnica and propolis have been used for thousands of years in folk medicine for several purposes. they possess several biological activities such as anti-inflammatory, antifungal, antiviral and tissue regenerative, among others. although the antibacterial activity of propolis has already been demonstrated, very few studies have been done on bacteria of clinical relevance in dentistry. also, the antimicrobial activity of arnica has not been extensively investigated. therefore the aim here was to e ... | 2000 | 10716618 |
| prevalence of beta-lactamase-producing strains among 149 anaerobic gram-negative rods isolated from periodontal pockets. | in a prospective study, 47 adults presenting a rapidly progressive periodontitis were selected in order to evaluate the prevalence of beta-lactamase-producing strains among oral anaerobic gram-negative rods. predominant anaerobes were identified from two of the deepest periodontal pockets. beta-lactamase-positive strains fulfilled to at least two of three criteria: positive nitrocefin test, penicillin etest minimal inhibitory concentration > 1 microgram/ml, and disk diffusion synergy between amo ... | 1999 | 10895690 |
| antimicrobial activity of silver nitrate against periodontal pathogens. | metal ions were evaluated as potential antimicrobial agents suitable for local delivery in the oral cavity for the treatment of periodontitis. silver nitrate, copper chloride, and zinc chloride were tested for antimicrobial activity in in vitro killing assays conducted in phosphate buffered saline with a series of oral bacteria including gram-negative periodontal pathogens and gram-positive streptococci. copper and zinc salts failed to exhibit strong and consistent activity against periodontal p ... | 2001 | 11327077 |
| [prevotella denticola endocarditis in an intravenous drug abuser]. | | 2001 | 11440670 |
| antibacterial activity of fifth-generation dentin bonding systems. | past concepts that the pulp does not become infected until an actual carious exposure takes place have been challenged. the antibacterial effects of the dentin bonding systems single bond, prime&bond nt, and excite were evaluated using the bacteria streptococcus mutans atcc 25175, streptococcus intermedius, lactobacillus acidophilus, prevotella oris, prevotella bivia, prevotella denticola, porphyromonas gingivalis, porphyromonas endodontalis, and clostridium ramosum with a disk diffusion method. ... | 2001 | 11771577 |
| direct quantitative differentiation between prevotella intermedia and prevotella nigrescens in clinical specimens. | this paper describes a quantitative fluorescent in situ hybridization (fish) assay for the differential identification of prevotella intermedia and prevotella nigrescens in clinical samples, and compares its performance with less discriminatory culture and quantitative immunofluorescence (if) assays. fluorescence-labelled oligonucleotide probes directed to specific 16s rrna sequences of p. intermedia, p. nigrescens, prevotella pallens and prevotella denticola were hybridized under stringent cond ... | 2002 | 11988511 |
| antimicrobial properties of self-etching primer-bonding systems. | self-etching primers are now considered the new generation of dentin bonding systems that modify and incorporate the bacteria-containing smear layer into their bonding mechanism. the antibacterial effects of the self-etching primers clearfil se bond, mac bond, imperva fl bond, one-up bondf and prompt l-pop were evaluated using the bacteria streptococcus mutans atcc25175, peptostreptococcus anaerobius, peptostreptococcus prevotii, peptostreptococcus asaccharolyticus, lactobacillus acidophilus, la ... | 2003 | 12670069 |
| new bacterial species associated with chronic periodontitis. | recent investigations of the human subgingival oral flora based on ribosomal 16s cloning and sequencing have shown many of the bacterial species present to be novel species or phylotypes. the purpose of the present investigation was to identify potential periodontal pathogens among these newly identified species and phylotypes. species-specific ribosomal 16s primers for pcr amplification were developed for detection of new species. associations with chronic periodontitis were observed for severa ... | 2003 | 12709498 |
| susceptibility of some oral microorganisms to chlorhexidine and paramonochlorophenol. | since the use of antimicrobial agents is required in endodontic therapies, this study aimed at determining the minimum inhibitory concentrations (mics) of chlorhexidine digluconate and paramonochlorophenol (pmc) against microorganisms commonly found in endodontic infections. both agents were tested by agar dilution tests against pseudomonas aeruginosa, staphylococcus aureus, enterococcus faecalis, escherichia coli, candida albicans, prevotella intermedia, porphyromonas gingivalis, porphyromonas ... | 2004 | 15619879 |
| prevotella multiformis sp. nov., isolated from human subgingival plaque. | four bacterial strains isolated from the human oral cavity, pppa19, pppa21(t), pppa28 and pppa30, were characterized by determining phenotypic and biochemical features, cellular fatty acid profiles and the phylogenetic position based on 16s rrna gene sequence analysis. 16s rrna gene sequence analysis showed that each of the isolates was a member of the genus prevotella. these strains were related to prevotella denticola with about 95 % similarity. the strains were obligately anaerobic, non-pigme ... | 2005 | 15774668 |
| proteinase activity of prevotella species associated with oral purulent infection. | prevotella intermedia and prevotella nigrescens are often regarded as principal causes of acute dentoalveolar infection; however, other species within the genus are also known to be associated with such infection. the aim of this study was to determine the in vitro proteolytic activity of these different prevotella species that have been implicated with dentoalveolar infection. a total of 234 strains were obtained from pus specimens from dentoalveolar infection and from the plaque of healthy vol ... | 2006 | 16586023 |
| odontogenic bacteria in periodontal disease and resistance patterns to common antibiotics used as treatment and prophylaxis in odontology in spain. | resistance in streptococci or gram-negative bacteria is associated with antibiotic consumption. scarce information exists on the antibiotic susceptibility of bacterial isolates from patients with periodontitis in countries with high antibiotic consumption, as this is an area in which microbiological testing is not performed in daily practice. the present study was undertaken to explore the susceptibility of bacterial isolates in periodontitis to antibiotics prescribed in odontology in spain as t ... | 2007 | 17530037 |
| molecular identification of bacteria in bronchoalveolar lavage fluid from children with cystic fibrosis. | culture of bronchoalveolar lavage fluid (balf) is the gold standard for detection of pathogens in the lower airways in cystic fibrosis (cf). however, current culture results do not explain all clinical observations in cf, including negative culture results during pulmonary exacerbation and inflammation in the absence of pathogens. we hypothesize that organisms not routinely identified by culture occur in the cf airway and may contribute to disease. to test this hypothesis we used a culture-indep ... | 2007 | 18077362 |
| rapid identification of non-sporing anaerobes using nuclear magnetic resonance spectroscopy and an identification strategy. | the non-sporing anaerobes cause a wide spectrum of infections. they are difficult to culture and their identification is tedious and time-consuming. rapid identification of anaerobes is highly desirable. towards this end, the potential of nuclear magnetic resonance (nmr) spectroscopy for providing a fingerprint within the proton spectrum of six genera belonging to anaerobes reflecting their characteristic metabolites has been investigated. | 2007 | 18087080 |
| tinidazole inhibitory and cidal activity against anaerobic periodontal pathogens. | the in vitro activity of tinidazole against anaerobic periodontal pathogens (25 prevotella buccae, 18 prevotella denticola, 10 prevotella intermedia, 6 prevotella melaninogenica, 5 prevotella oralis, 10 fusobacterium nucleatum and 8 veillonella spp.) was determined by agar dilution. mic(90) values (minimum inhibitory concentration for 90% of the organisms) were 8 microg/ml for veillonella spp., 4 microg/ml for p. intermedia, 2 microg/ml for p. buccae, 1 microg/ml for fusobacterium spp. and 0.5 m ... | 2009 | 19097755 |
| microbial signature profiles of periodontally healthy and diseased patients. | to determine microbial profiles that discriminate periodontal health from different forms of periodontal diseases. | 2014 | 25139407 |
| general immune status and oral microbiology in patients with different forms of periodontitis and healthy control subjects. | immunological processes in the etiopathogenesis of periodontitis, especially the aggressive form, are not well understood. this study examined clinical as well as systemic immunological and local microbiological features in healthy controls and patients with different forms of periodontitis. | 2014 | 25299619 |
| periodontitis prevalence and serum antibody reactivity to periodontal bacteria in primary sjögren's syndrome: a pilot study. | the aims of this study were as follows: (i) to assess the prevalence of periodontitis among patients with primary sjögren's syndrome (pss) and comparator groups of patients with rheumatoid arthritis (ra) and osteoarthritis (oa). (ii) to perform a pilot study to compare serum antibody responses to 10 oral/periodontal bacteria in these patient groups and a historical comparator group of patients with periodontitis. | 2016 | 26646777 |
| discovery of β-1,4-d-mannosyl-n-acetyl-d-glucosamine phosphorylase involved in the metabolism of n-glycans. | a gene cluster involved in n-glycan metabolism was identified in the genome of bacteroides thetaiotaomicron vpi-5482. this gene cluster encodes a major facilitator superfamily transporter, a starch utilization system-like transporter consisting of a tonb-dependent oligosaccharide transporter and an outer membrane lipoprotein, four glycoside hydrolases (α-mannosidase, β-n-acetylhexosaminidase, exo-α-sialidase, and endo-β-n-acetylglucosaminidase), and a phosphorylase (bt1033) with unknown function ... | 2013 | 23943617 |
| molecular analysis of 16s rrna genes identifies potentially periodontal pathogenic bacteria and archaea in the plaque of partially erupted third molars. | small subunit rrna sequencing and phylogenetic analysis were used to identify cultivable and uncultivable microorganisms present in the dental plaque of symptomatic and asymptomatic partially erupted third molars to determine the prevalence of putative periodontal pathogens in pericoronal sites. | 2012 | 22326171 |
| comparison of bacterial culture and 16s rrna community profiling by clonal analysis and pyrosequencing for the characterization of the dentine caries-associated microbiome. | culture-independent analyses have greatly expanded knowledge regarding the composition of complex bacterial communities including those associated with oral diseases. a consistent finding from such studies, however, has been the under-reporting of members of the phylum actinobacteria. in this study, five pairs of broad range primers targeting 16s rrna genes were used in clonal analysis of 6 samples collected from tooth lesions involving dentine in subjects with active caries. samples were also s ... | 2014 | 25429361 |
| age-dependent changes in porphyromonas gingivalis and prevotella species/phylotypes in healthy gingiva and inflamed/diseased sub-gingival sites. | early colonisation of oral surfaces by periodontal pathogens presents a significant risk factor for subsequent development of destructive disease affecting tissues that support the dentition. the aims of the present study were to establish the age-dependent relationship between sub-gingival profiles of 22 prevotella species/phylotypes in children, adolescents and adults from an isolated aboriginal community and, further, to use this information to identify prevotella species that could serve as ... | 2015 | 25106846 |
| influence of extracellular matrix proteins in enhancing bacterial adhesion to titanium surfaces. | to examine the influence of extracellular matrix (ecm) proteins in enhancing bacterial adhesion and biofilm formation on titanium surfaces. | 2012 | 22566385 |
| prevotella brain abscesses and stroke following dental extraction in a young patient: a case report and review of the literature. | a brain abscess is a life-threatening infection. there are few reports describing prevotella bacteremia with middle cerebral artery (mca) occlusion and brain abscess following dental extraction in the literature. we herein describe a 32-year-old healthy man who experienced headache after tooth extraction. he was not correctly diagnosed until he experienced a stroke and a blood culture revealed prevotella denticola weeks later. this case and our detailed review of related cases highlight the impo ... | 2014 | 25130130 |
| pattern of distribution of prevotella species/phylotypes associated with healthy gingiva and periodontal disease. | the purpose of the present study was to obtain diverse profiles of prevotella species associated with gingival sites in an isolated aboriginal and an urban community by phylogenetic analysis and to establish patterns of association of identified prevotella species in gingival sites. species/phylotypes identified from the phylogenetic analysis of near full-length bacteroidetes 16s rrna gene sequences cloned from subgingival plaque samples obtained from an aboriginal community were compared with t ... | 2012 | 22684253 |
| microbiota analysis of biofilms on experimental abutments mimicking dental implants: an in vivo model. | the microbiota colonizing dental implants has been said to be similar to the microbiome surrounding teeth. in the absence of inflammation, a biofilm with pathological bacteria can cover implant surfaces exposed to the oral cavity, due for example, to a remodeling process. the aim of the present study was to identify the microbiota surrounding exposed dental implants in patients with and without a history of periodontitis through a deep-sequencing approach. | 2017 | 28492362 |
| antimicrobial resistance and beta-lactamase production of clinical isolates of prevotella and porphyromonas species. | this study determined the beta-lactamase production and the antimicrobial resistance of 72 prevotella species and 48 porphyromonas species isolated from different clinical specimens. | 2005 | 15722627 |
| evaluation of the rapid id 32a system for identification of anaerobic gram-negative bacilli, excluding the bacteroides fragilis group. | objective: to evaluate the rapid id 32a system (biomérieux, marcy-l'etoile, france) for the identification of anaerobic gram-negative bacilli, excluding the bacteroides fragilis group. methods: five hundred and twenty-eight identified clinical isolates of non-b. fragilis group anaerobic gram-negative bacilli were tested in the rapid id 32a system, and identifications were compared with those obtained with conventional biochemical tests and gas-liquid chromatography. results: the rapid id 32a sys ... | 1999 | 11856276 |
| beta-lactamase production by oral pigmented prevotella species isolated from young children. | the frequency of beta-lactamase production by oral pigmented prevotella species isolated from 23 healthy young children and the minimal inhibitory concentrations (mics) for 186 available beta-lactamase-positive isolates were examined by using the chromogenic cephalosporin disk test (ab biodisk, solna, sweden) and the etest (ab biodisk) and/or the agar dilution method of the national committee for clinical laboratory standards (villanova, pa, usa), respectively. beta-lactamase-positive prevotella ... | 1997 | 9310704 |
| investigation of the influences of puberty, genetics, and environment on the composition of subgingival periodontal floras. | the classical twin model was utilized in this study in an attempt to determine the importance of host genetics to the composition of the subgingival flora. simultaneously, the effect of puberty on the flora composition was assessed. the compositions of the floras were significantly different at ages 11 and 14 in the same people, indicating that transition to an adult flora composition may be initiated during puberty. however, the numbers of subjects who had prepubertal and postpubertal testoster ... | 1993 | 8514392 |