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long-chain fatty acids of peptococci and peptostreptococci.the long-chain fatty acids extracted from the whole cells of 12 clinically significant species of peptococci and peptostreptococci were characterized by gas-liquid chromatography. the resulting methylated fatty acid profiles (and some unidentified compounds) of 82 strains allowed the 12 species to be separated into four groups. fifteen strains of peptostreptococcus anaerobius were placed in group i because they had a unique, prominent compound that occurred in the area where a c8 to c10 fatty ac ...19761002830
comparative sequence analyses of the 16s rrna genes of lactobacillus minutus, lactobacillus rimae and streptococcus parvulus: proposal for the creation of a new genus atopobium.16s rrna gene sequencing was performed on the species lactobacillus minutus, lactobacillus rimae and streptococcus parvulus in order to clarify their taxonomic position. based on comparative sequence analyses these organisms represent a hitherto unknown line of descent within the lactic acid group of bacteria for which a new genus, atopobium gen. nov., is proposed.19921382033
lactobacillus uli sp. nov. and lactobacillus rimae sp. nov. from the human gingival crevice and emended descriptions of lactobacillus minutus and streptococcus parvulus.lactobacillus uli sp. nov. and lactobacillus rimae sp. nov. are described. these organisms are short, gram-positive, strictly anaerobic, rod-shaped bacteria that have dna g+c contents of 53 and 45 mol%, respectively, produce major amounts of lactic acid, and have been isolated from human gingival crevices and periodontal pockets. the major cellular fatty acid derivatives for both species are c18:1 cis-9 fatty acid methyl ester and c18:1 cis-9 dimethylacetyl. the type strain of l. uli is strain v ...19911854640
diversity of bacterial populations on the tongue dorsa of patients with halitosis and healthy patients.the primary purpose of the present study was to compare the microbial profiles of the tongue dorsa of healthy subjects and subjects with halitosis by using culture-independent molecular methods. our overall goal was to determine the bacterial diversity on the surface of the tongue dorsum as part of our ongoing efforts to identify all cultivable and not-yet-cultivated species of the oral cavity. tongue dorsum scrapings were analyzed from healthy subjects with no complaints of halitosis and subjec ...200312574246
erratum to: complete genome sequence of atopobium parvulum type strain (ipp 1246). 201021304720
altered intestinal microbiota-host mitochondria crosstalk in new onset crohn's disease.intestinal microbial dysbiosis is associated with crohn's disease (cd). however, the mechanisms leading to the chronic mucosal inflammation that characterizes this disease remain unclear. in this report, we use systems-level approaches to study the interactions between the gut microbiota and host in new-onset paediatric patients to evaluate causality and mechanisms of disease. we report an altered host proteome in cd patients indicative of impaired mitochondrial functions. in particular, mitocho ...201627876802
antimicrobial activity of streptococcus salivarius k12 on bacteria involved in oral malodour.to investigate the antimicrobial activity of the bacteriocin-producing strain streptococcus salivarius k12 against several bacteria involved in halitosis.201222405584
complete genome sequence of atopobium parvulum type strain (ipp 1246).atopobium parvulum (weinberg et al. 1937) collins and wallbanks 1993 comb. nov. is the type strain of the species and belongs to the genomically yet unstudied atopobium/olsenella branch of the family coriobacteriaceae. the species a. parvulum is of interest because its members are frequently isolated from the human oral cavity and are found to be associated with halitosis (oral malodor) but not with periodontitis. here we describe the features of this organism, together with the complete genome ...200921304653
[protease activity of microflora in the oral cavity of patients with periodontitis].microbial spectrum and non-specific as well as specific iga1 protease activity of isolated microorganisms were investigated in gingival liquid of patients with periodontitis. microorganisms from the gingival liqud of these patients belonged to conditional-pathogenic obligate and facultatively anaerobic bacteria. 24 strains of microorganisms have been identified. nonspecific proteolytic activity was found in the following microorganisms: actinomyces israelii, actinomyces naeslundii, aerococcus vi ...200819205430
molecular identification of bacteria on the tongue dorsum of subjects with and without halitosis.compare the microbial profiles on the tongue dorsum in patients with halitosis and control subjects in a uk population using culture-independent techniques.200818336372
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 ...200312709498
characterisation of eubacterium-like strains isolated from oral infections.the genus eubacterium currently includes a heterogeneous group of gram-positive, non-spore-forming anaerobic bacilli, many of which are slow growing, fastidious and generally unreactive in biochemical tests. as a consequence, cultivation and identification of isolates are difficult and the taxonomy of the group remains indifferent. in this study, 105 isolates from odontogenic infections, infections associated with dental implants or saliva from healthy subjects and provisionally assigned to the ...200111699590
effect of streptococcus parvulus and peptostreptococcus magnus on cytotoxin levels of clostridium difficile in anaerobic continuous flow culture.an anaerobic continuous flow (cf) culture method was used in order to study the effect of peptostreptococcus magnus and streptococcus parvulus, anaerobic gram-positive cocci which are members of intestinal bacterial flora, on growth and cytotoxin-activity of clostridium difficile. the growth- and the cytotoxin activity-patterns of c. difficile in an established cf culture of p. magnus were similar to those of c. difficile alone. on the other hand, in the mixed culture system of c. difficile and ...19873431487
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