Publications

TitleAbstractYear
Filter
PMID
Filter
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 ...19911800380
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 ...19979220164
beta-lactamase producing bacteria in adult periodontitis.in 23 untreated adult periodontitis patients, the occurrence of beta-lactamase producing periodontal bacteria was determined. in addition to non-selective isolation media, selective isolation and growth of beta-lactamase positive subgingival bacterial species was carried out on blood agar plates supplemented with amoxicillin and plates with amoxicillin+clavulanic acid. porphyromonas gingivalis, prevotella intermedia, actinobacillus actinomycetemcomitans, peptostreptococcus micros, fusobacterium ...19979266340
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 ...199911856276
culture-independent identification of pathogenic bacteria and polymicrobial infections in the genitourinary tract of renal transplant recipients.renal transplant recipients are predisposed to urinary tract infections caused by both common uropathogens and opportunistic bacteria resulting frequently in significant polymicrobial infections. in this study, a culture-independent 16s rrna-based approach was established to identify unusual, fastidious, or anaerobic bacteria and to investigate bacterial diversity in urinary tract specimens. similarly sized amplicons encompassing the v6 to v8 region of the 16s rrna were analyzed with denaturing ...200314662931
enzymatic and antigenic characterization of immunoglobulin a1 proteases from bacteroides and capnocytophaga spp.bacteroides and capnocytophaga species have been implicated as periodontal pathogens. some of these species possess immunoglobulin a1 (iga1) proteases that are capable of cleaving the human iga1 molecule in the hinge region, leaving intact fc alpha and fab alpha fragments. the purpose of this study was to characterize this activity. in addition to iga1 protease activity in already known species, iga1 protease activity was a feature of bacteroides buccalis, bacteroides oralis, bacteroides veroral ...19873546133
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 ...19862871042
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 ...19921390106
prevotella micans sp. nov., isolated from the human oral cavity.four strains of anaerobic gram-negative bacilli isolated from the human mouth were characterized using a variety of phenotypic and genotypic tests. the strains were found to comprise a homogeneous group and 16s rrna gene sequence analysis revealed them to be distinct from but related to a loose cluster of prevotella species including prevotella buccalis, prevotella nanceiensis and prevotella marshii. a novel species, prevotella micans sp. nov., is proposed to accommodate these strains. prevotell ...200919329604
[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
prevotella timonensis sp. nov., isolated from a human breast abscess.gram-negative anaerobic rods were isolated from a human breast abscess. based on genotypic and phenotypic characteristics, the novel strain belonged to the genus prevotella. phylogenetic analysis based on 16s rrna gene sequence comparisons showed that it was closely related to prevotella buccalis (94 % 16s rrna gene sequence similarity), prevotella salivae (90 %) and prevotella oris (89.1 %). the major cellular fatty acid was c(14 : 0) (19.5 %). the new isolate represents a novel species in the ...200717392225
beta-lactamic resistance profiles in porphyromonas, prevotella, and parvimonas species isolated from acute endodontic infections.susceptibility to beta-lactamic agents has changed among anaerobic isolates from acute endodontic infections. the aim of the present study was to determine the prevalence of the cfxa/cfxa2 gene in prevotella spp., porphyromonas spp., and parviomonas micra strains and show its phenotypic expression.201424565649
Displaying items 1 - 12 of 12