Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| [an immunological study on infectious mechanism of bacteroides melaninogenicus]. | 1973 | 4514775 | |
| [bacteroides melaninogenicus. morphological and biochemical characters]. | 1973 | 4516773 | |
| antiphagocytic effects of the capsular structure of a pathogenic strain of bacteroides melaninogenicus. | 1973 | 4519681 | |
| a delayed hypersensitivity in animals immunized with bacteroides melaninogenicus. | 1974 | 4526974 | |
| haemagglutinating activity of bacteroides melaninogenicus. | 1974 | 4527823 | |
| a comparison of some characteristics of reference strains of bacteroides or alis with bacteroides melaninogenicus. | 1974 | 4531885 | |
| subgrouping of bacteroides melaninogenicus from the pattern of volatile fatty acid production. | 1974 | 4534664 | |
| [effect of bacteroides melaninogenicus on dentin in vitro]. | 1972 | 4558120 | |
| determination of bacteroides melaninogenicus serogroups by fluorescent antibody staining. | fluorescein isothiocyanate-labeled antibody reagents (conjugates) were prepared to one strain of each of the three subspecies of bacteroides melaninogenicus: b. melaninogenicus subsp. melaninogenicus, b. melaninogenicus subsp. asaccharolyticus, and b. melaninogenicus subsp. intermedius. these three conjugates were specific; thus, they provided a new serological classification of b. melaninogenicus. the three serogroups were designated a, b, and c. most test strains (98%) isolated from human clin ... | 1974 | 4609033 |
| in vitro antimicrobial susceptibility of anaerobic bacteria isolated from clinical specimens. | the minimal inhibitory concentrations of 601 clinical isolates of anaerobic bacteria to 10 different antimicrobial agents were determined by an agar-dilution technique. nearly all strains were resistant to kanamycin and gentamicin, although moderate activity to both drugs was noted with fusobacterium sp., anaerobic cocci, some strains of bacteroides melaninogenicus, and nonsporeforming gram-positive bacilli. chloramphenicol at 12.5 mug/ml inhibited all but three of the strains tested. tetracycli ... | 1972 | 4680804 |
| the 3-ketodihydrosphingosine synthetase of bacteroides melaninogenicus: induction by vitamin k. | 1973 | 4730806 | |
| biosynthetic precursors of vitamin k as growth promoters for bacteroides melaninogenicus. | the growth of a vitamin k-requiring strain of bacteroides melaninogenicus was promoted by some postulated and proven biosynthetic precursors of bacterial menaquinones, 1,4-dihydroxy-2-naphthoic acid, shikimic acid, chorismic acid, and 4(2'-carboxyphenyl)-4-oxobutyric acid. growth of the organism with [2',4-(14)c(2)]-4(2'-carboxy phenyl)-4-oxobutyric acid as the vitamin k replacement gave rise to a mixture of radioactive menaquinone-9 and menaquinone-10; the dilution factor for this incorporation ... | 1973 | 4745437 |
| antibodies reacting with lipopolysaccharides from bacteroides melaninogenicus, in serum from normal human subjects. | 1974 | 4856196 | |
| endotoxin: stimulation of bone resorption in tissue culture. | bacterial endotoxins can stimulate the release of previously incorporated calcium-45 and tritiated proline from fetal rat bone in tissue culture. endotoxin from bacteroides melaninogenicus, an organism regularly found in the gingival crevice of man, produces a response similar to parathyroid hormone and is effective at doses as low as 0.1 microgram per milliliter. this response is inhibited by serum and dependent upon the presence of albumin. endotoxins may play a role in the bone loss character ... | 1970 | 4910373 |
| biological activities of endotoxin from bacteroides melaninogenicus. | 1970 | 4914190 | |
| effect of bile and desoxycholate on gram-negative anaerobic bacteria. | the bile tests for characterizing gram-negative anaerobic bacilli were reevaluated in prereduced anaerobically sterilized peptone-yeast-glucose broth, in thioglycollate broth, and on blood agar plates. blood agar plates were unsatisfactory. the combination of 20% bile with 0.1% desoxycholate inhibited fusobacterium, bacteroides melaninogenicus, and b. oralis and sometimes sphaerophorus necrophorus, but not b. fragilis or other sphaerophorus species studied. ten per cent bile with 0.05% desoxycho ... | 1970 | 4922082 |
| succinate as a growth factor for bacteroides melaninogenicus. | rumen strains of the obligate anaerobe bacteroides melaninogenicus normally require medium supplemented with both heme and vitamin k. sodium succinate was found to be an additional growth factor in that this compound can replace the requirement for heme in the presence of vitamin k, allowing good growth of the organism, and succinate can also partially replace the requirement for vitamin k in the presence of heme. the addition of succinate to a medium supplemented with both vitamin k and heme in ... | 1971 | 4941554 |
| [serological study of gram-negative sporeless anaerobes, and especially of bacteroides convexus and bacteroides melaninogenicus]. | 1968 | 4974979 | |
| serological properties of lipopolysaccharide from oral stains of bacteroides melaninogenicus. | lipopolysaccharide (lps) extracted with phenol-water from four oral strains of bacteroides melaninogenicus was found to be serologically active in precipitation and complement fixation tests and sensitized sheep erythrocytes to agglutination. except for the capacity to inhibit indirect hemagglutination, the serological activity was destroyed by oxidation with periodate. the isolated lps was antigenic in rabbits, giving rise to low- and high-molecular-weight antibodies. cross-reactivity experimen ... | 1969 | 4975745 |
| effect of vitamin k depletion and restoration on sphingolipid metabolism in bacteroides melaninogenicus. | bacteroides melaninogenicus requires vitamin k for normal growth. cells incubated in a vitamin k-free medium form defective cell envelopes. studies with vitamin k-grown "k(+)" and vitamin k-depleted "k(-)" cells showed that [(14)c]choline and [(14)c]glycerol were not taken up, but several amino acids and acetate were incorporated to the same degree by both types of cultures. however, k(-) cells incorporated succinate to a greater degree than did k(+) cultures. the relative incorporation of succi ... | 1972 | 5025467 |
| in vitro evaluation of actinobolin as an antibiotic for the treatment of periodontal disease. | actinobolin was evaluated in vitro by a paper disc-agar diffusion method for inhibitory activity against mixed microbial cultures obtained from patients with periodontal disease and against pure bacterial cultures tentatively identified as strains of bacteroides melaninogenicus, fusobacterium fusiforme, leptotrichia buccalis, and veillonella parvula. every culture tested was inhibited to some degree by actinobolin. these observations suggest that actinobolin may be effective in the treatment of ... | 1972 | 5059624 |
| conditions for the demonstration of collagenolytic activity in bacteroides melaninogenicus. | 1967 | 5228197 | |
| biochemical and immunological heterogeneity of bacteroides melaninogenicus. | 1967 | 5237341 | |
| chemical characteristics of bacteroides melaninogenicus endotoxin. | 1968 | 5250453 | |
| [endotoxin of bacteroides melaninogenicus]. | 1969 | 5264122 | |
| [immunological study of bacteroides melaninogenicus]. | 1970 | 5276536 | |
| lipopolysaccharide from bacteroides melaninogenicus isolated from the supernatant fluid after ultracentrifugation of the water phase following phenol-water extraction. | 1971 | 5280416 | |
| evaluation of kanamycin as an aid in the isolation of bacteroides melaninogenicus from dental plaque. | 1971 | 5283536 | |
| a pathogenic strain of bacteroides melaninogenicus. | 1971 | 5283537 | |
| [susceptibility of bacteroides melaninogenicus to antibiotics]. | 1970 | 5291253 | |
| amino acid fermentation by bacteroides melaninogenicus. | 1970 | 5310307 | |
| bacteroides melaninogenicus and its products in the gingiva of man. | 1966 | 5327110 | |
| characterization of the iso-branched sphinganines from the ceramide phospholipids of bacteroides melaninogenicus. | 1969 | 5364262 | |
| lipids of bacteroides melaninogenicus. | the lipids of bacteroides melaninogenicus were readily extractable with chloroform-methanol. three per cent of the fatty acids were not extractable. the neutral lipids contained 4% of the extractable fatty acids, the stench characteristic of these organisms, and 0.5 mumole of vitamin k(2) isoprenologues k(2)-35, k(2)-40, and k(2)-45 per g (dry weight). this is one-fifth to one-tenth of the vitamin k(2) level found in other bacteria. ninety-six per cent of the extractable fatty acids were associa ... | 1970 | 5411759 |
| [cervical gas phlegmon with lethal outcome (bacteroides melaninogenicus)]. | 1970 | 5412771 | |
| [in vitro sensitivity of actinomyces israelii, actinobacillus actinomycetem-comitans and bacteroides melaninogenicus to cephalothin, cephaloridine, gentamicin, fusidic acid and lincomycin]. | 1970 | 5481995 | |
| [in vitro sensitivity of actinomyces israelii, actinobacillus actinomycetem-comitans and bacteroides melaninogenicus to cephalothin, cephaloridine, gentamicin, fusidic acid and lincomycin]. | 1970 | 5494880 | |
| [bacteroides melaninogenicus as the cause of multiple brain abscesses]. | 1967 | 5593018 | |
| vitamin k deficiency in fusiformis nigrescens. i. influence on whole cells and cell envelope characteristics. | vitamin k depletion in the vitamin k-requiring anaerobe fusiformis nigrescens resulted in the formation of elongated cells. in the presence of vitamin k, inhibition by cyanide and heme depletion did not affect cell morphology. peptide depletion, as well as inhibition by chloramphenicol, ethionine, or fluorophenylalanine, also resulted in formation of elongated cells. chemical analysis of cells and envelopes showed that protein, lipid, and deoxyribonucleic acid levels were similar in vitamin-supp ... | 1968 | 5669903 |
| antibiotic susceptibility of anaerobic ruminal bacteria. | this study demonstrated that 15 species of ruminal bacteria with no previous history of contact with antibiotics are susceptible to bacitracin, chloramphenicol, chlortetracycline, erythromycin, novobiocin, oleandomycin, oxytetracycline, penicillin, tetracycline, tylosin, and vancomycin. a number of the species were not inhibited by kanamycin, neomycin, polymyxin, and streptomycin. the data suggest that antibiotic-resistant cells occur within susceptible cultures of these species. streptococcus b ... | 1968 | 5689514 |
| bacteroides melaninogenicus in diseases of domestic animals. | 1968 | 5693151 | |
| bacteroides with special reference to bacteroides melaninogenicus. | 1969 | 5785363 | |
| ultaviolet red fluorescence of bacteroides melaninogenicus. | under longwave ultraviolet light, bacteroides melaninogenicus fluoresced vivid red on blood-agar plates as well as in chronic cutaneous ulcers and purulent drainage. | 1969 | 5785962 |
| water-soluble factors with vitamin k activity from pig liver and from fusiformis nigrescens. | 1966 | 5964171 | |
| the effect of intensive antibacterial therapy on the sulcular environment in monkeys. part i. changes in the bacteriology of the gingival sulcus. | the changes induced in the bacteriology of the gingival sulcus were evaluated as part of a study considering the keratinizing potential of the sulcular epithelium when bacterial plaque was essentially eliminated. two rhesus monkeys were scaled and placed on a daily therapeutic regimen which included a prophylaxis, systemic tetracycline, and topical chlorhexidine. over the 40 day experimental period and 74 days post-therapy, subgingival plaque samples were taken periodically. the plaque samples w ... | 1980 | 6102117 |
| the isolation and identification of bacteroides spp. from the normal human faecal flora. | gram-negative anaerobic bacilli of the bacteroides group were isolated on an enriched selective medium from specimens of faeces from 20 normal healthy adults and identified by conventional bacteriological methods. a heavy growth of bacteroides spp. was obtained from all specimens and 10 representative colonies from each subject were identified. most isolates (84%) belonged to the b. fragilis group. the commonest species identified in this group were b vulgatus and b. thetaiotaomicron (22% each), ... | 1980 | 6102157 |
| the isolation and identification of bacteroides ssp. from the normal human vaginal flora. | the occurrence of gram-negative anaerobic bacilli in the normal vaginal flora was studied in 20 normal healthy women attending a family-planning clinic. a swab was taken from the cervix and posterior fornix and bacteroides spp. were isolated on a selective medium from 13 (65%) subjects. a heavy growth of bacteroides was obtained from 11 specimens but only a few colonies were isolated from two specimens. where possible, 10 representative colonies from each subject were studied and 113 isolates we ... | 1980 | 6102158 |
| the isolation and identification of bacteroides spp. from the normal human gingival flora. | gram-negative anaerobic bacilli were isolated on an enriched selective medium from specimens of subgingival plaque from 20 normal, healthy adults without periodontal disease. a heavy growth of bacteroides and fusobacterium spp. was obtained from all specimens and 10 representative colonies from each subject were selected for identification by conventional bacteriological methods. results were obtained in these tests with 188 isolates; some strains of the b. melaninogenicus/oralis group would not ... | 1980 | 6102159 |
| bacterial synergy in mixed aerobic/anaerobic infections. | 1980 | 6102667 | |
| fatty acid and isoprenoid quinone composition in the classification of bacteroides melaninogenicus and related taxa. | 1980 | 6102980 | |
| bacterial synergy in mixed aerobic/anaerobic infections. | 1980 | 6103356 | |
| neutrophil chemotaxis induced by anaerobic bacteria isolated from necrotic dental pulps. | anaerobic bacteria belonging to the species bacteroides melaninogenicus, bacteroides asaccharolyticus, fusobacterium nucleatum, peptostreptococcus anaerobius and eubacterium alactolyticum, isolated from necrotic dental pulps, were tested for their capacity to induce neutrophil leukocyte chemotaxis. generation of chemotactic factors in serum by whole bacterial cells and chemotaxis induced by bacterial extracts were studied in vitro by the boyden technique. subcutaneously implanted wound chambers ... | 1980 | 6103573 |
| opsonization of four bacteroides species: role of the classical complement pathway and immunoglobulin. | previous investigators have suggested that opsonization of two bacteroides species is mediated exclusively by the alternative complement pathway and requires immunoglobulins. in this study, the nature of the opsonic factors in nonimmune human serum for four species of bacteroides was investigated by measuring uptake of [(3)h]thymidine-labeled bacteria by human polymorphonuclear leukocytes. normal human serum, c2-deficient serum, immunoglobulin-deficient serum, and serum chelated with ethylene gl ... | 1980 | 6103873 |
| the subgingival microbial flora during pregnancy. | 1980 | 6103927 | |
| a scheme for the identification of clinical isolates of gram-negative anaerobic bacilli by conventional bacteriological tests. | more than 1000 strains of gram-negative anaerobic bacilli, including reference strains, clinical isolates, and members of the normal flora of the mouth, lower gastro-intestinal tract and vagina of healthy human subjects, were studied by conventional bacteriological methods and by gas-liquid chromatographic analysis of metabolic products in a series of investigations. a short combined set of tests with particular discriminant value was selected, and a scheme for the identification of the species ... | 1980 | 6103963 |
| polyclonal b-cell activation: severe periodontal disease in young adults. | 1980 | 6105032 | |
| in vitro inhibition of neisseria gonorrhoeae growth by strict anaerobes. | thirty two anaerobic bacterial strains were screened for their in vitro inhibitory activity toward 21 neisseria gonorrhoeae strains, including two penicillin-resistant strains. from this screening, six anaerobic bacteria belonging to the genera bacteroides, peptostreptococcus, and eubacterium were selected for their large antigonococcal spectrum of activity. the inhibitory activity of these six strains appears to be specific to the gonococcus as a variety of anaerobes and aerobes were not genera ... | 1980 | 6105130 |
| evaluation of the api zym system for identification of bacteroides and fusobacterium species. | the api zym patterns of 97 bacteroides and 25 fusobacterium strains were examined. the system discriminated between b. asaccharolyticus, b. melaninogenicus ss. melaninogenicus, and b. melaninogenicus ss. melaninogenicus, but not between other bacteroides species or between species of fusobacterium. the results provided new information on the enzymatic activity of these groups of bacteria. | 1980 | 6105615 |
| diagnosis and cure of recurrent urinary infection with microaerophilic and anaerobic bacteria. | 1980 | 6107161 | |
| evaluation of fluoretec-m for detection of oral strains of bacteroides asaccharolyticus and bacteroides melaninogenicus. | fluoretec-m is a polyvalent conjugate used in direct fluorescent-antibody staining for identification of the bacteroides asaccharolyticus-bacteroides melaninogenicus group. the fluoretec-m reagent detected all oral and nonoral test strains of b. melaninogaenicus subsp. intermedius, all test strains of b. melaninogenicus subsp. melaninogenicus, and the nonoral strains of b. asaccharolyticus. however, the fluoretec-m polyvalent reagent and the monovalent conjugates which constitute fluoretec-m di ... | 1980 | 6107305 |
| the carbon dioxide requirements of anaerobic bacteria. | some clinically significant anaerobic bacteria were incubated in pure culture in anaerobic jars containing a range of atmospheric concentrations of co2. growth of clostridium perfringens, c. sporogenes and c. septicum was independent of the amount of co2. small supplements of co2 (0.25%) allowed good growth of the majority of anaerobes studied--an observation contrary to established teaching. the exceptions were fusobacterium necrophorum which showed an absolute requirement for co2 of at least 1 ... | 1980 | 6107383 |
| detection of bacteroides fragilis and bacteroides melaninogenicus by direct immunofluorescence. | a new diagnostic kit, which contains a polyvalent antiserum for either bacteroides fragilis or bacteroides melaninogenicus, was tested for reliability and specificity on 146 clinical samples of different origin. a correlation between the culture and immunofluorescence was observed for b. fragilis in 87.39% of cases and for b. melaninogenicus in 81.48% of cases. when pure cultures were tested, aerobically as well as anaerobically, false-positive reactions were observed with staphylococci and clos ... | 1980 | 6108969 |
| the relationship of bacteroides melaninogenicus to symptoms associated with pulpal necrosis. | the canal contents of thirty-three cariously and traumatically exposed pulpless teeth were sampled with a special technique and cultured anaerobically for growth in prereduced thioglycollate and for bacteroides melaninogenicus on selective blood agar plates. the presence of b. melaninogenicus was compared with the presence or absence of eight symptoms associated with pulpal necrosis and the presence or absence of growth in thioglycollate. b. melaninogenicus was found to be significantly related ... | 1980 | 6109270 |
| non-immunological precipitation by the neutral detergent triton x-100 in agar gel diffusion. | triton x-100 can be used to clarify vague immunoprecipitin lines from bacterial antigens; however, non-immunological precipitation can lead to mistaken interpretation of immunodiffusion results. if triton x-100 is added directly to the gel during preparation rather than to the antigen well, this detergent artifact can be eliminated. | 1980 | 6109516 |
| characterization of bacteroides asaccharolyticus and b. melaninogenicus oral isolates. | experiments were designed to characterize a number of oral "pigmented" bacteroides isolates with regard to their pathogenicity in an experimental model system and a number of other properties. t these include fatty acid determination, hemagglutination studies, collagenase and protease activities, and vitamin k dependency. oral b, asaccharolyticus and b, melaninogenicus isolates differed from one another in phenylacetic acid production, hemagglutination, collagenase activity, and pathogenicity. a ... | 1980 | 6109561 |
| penicillin-resistant bacteroides melaninogenicus infection of the mandible. | oral infections caused by gram-negative anaerobes are now recognized more frequently than in the past because of improved culturing techniques. a case of b melaninogenicus infection secondary to a fractured mandible, in which the organisms were both clinically resistant and insensitive on culture to penicillin, is presented. the organism was also shown to produce beta-lactamase. clindamycin is appropriate dosage resulted in diarrhea, which precluded its continuation. erythromycin therapy was cur ... | 1981 | 6109769 |
| anaerobic bacteria in pediatric infections. | anaerobic bacteria normally outnumber aerobic bacteria in the oral cavity and the gastrointestinal tract. they have been isolated from pediatric patients with various diseases. anaerobic bacteria have been shown to colonize newborns immediately after delivery. these organisms are associated with cellulitis at the site of fetal monitoring, neonatal aspiration pneumonia bacteremia, conjunctivitis and omphalitis. clostridial spores have been found in cases of necrotizing enterocolitis. botulism of ... | 1981 | 6110328 |
| acute suppurative parotitis associated with anaerobic bacteremia. | most episodes of acute suppurative parotitis are caused by staphylococcus aureus. reported here is a patient who had acute parotitis associated with anaerobic sepsis caused by bacteroides melaninogenicus and peptostreptococcus micros. acute parotitis should be included in the ever-widening spectrum of clinical infections caused by anaerobic bacteria. | 1981 | 6110333 |
| bacteriocin-like substance (melaninocin) from oral bacteroides melaninogenicus. | a bacteriocin-like substance, designated melaninocin, was extracted from a strain of bacteroides melaninogenicus by ultrasonic treatment and purified. melaninocin was heat labile and was destroyed by digestion by several proteolytic enzymes. among the oral indigenous microorganisms, bacteroides, actinomyces, and streptococci were found to be sensitive to melaninocin. | 1981 | 6111537 |
| black-pigmented bacteroides spp. in the human oral cavity. | five healthy children under 6 years of age, five healthy adults, and 10 adult periodontitis patients were examined for the prevalence and distribution of black-pigmented bacteroides in the oral cavity. a total of 13 samples was obtained from each individual, including four supragingival and four subgingival dental plaques, dental occlusal surface, buccal mucosa, dorsal tongue, tonsil, and whole saliva. black-pigmented bacteroides were recovered from nine adult periodontitis patients. healthy adu ... | 1981 | 6111541 |
| antimicrobial effect of fluorides on bacteroides melaninogenicus subspecies and bacteroides asaccharolyticus. | this study was undertaken to determine whether the suspected periodontopathogens bacteroides melaninogenicus ss melaninogenicus and intermedius and bacteroides asaccharolyticus are killed by clinically used topical fluorides. the viability of each organism was examined after exposure to three fluoride compounds, stannous (snf2), acidulated phosphate (apf), and neutral sodium (naf), for 1 and 8 h. stannous fluoride was found to be effective at lowest fluoride concentrations with apf next in effec ... | 1980 | 6111569 |
| production of phenylacetic acid by strains of bacteroides asaccharolyticus and bacteroides gingivalis (sp. nov.). | strains of bacteroides asaccharolyticus and bacteroides melaninogenicus subspecies isolated from human and animal sources were examined for the production of phenylacetic acid. b. asaccharolyticus strains isolated from sites in humans and monkeys always produced phenylacetic acid. b. asaccharolyticus strains isolated from human nonoral sites consistently failed to produce this product. this metabolic difference correlates with the genetic dichotomy recently found to exist between oral and nonora ... | 1980 | 6112236 |
| rapid detection and identification of bacteroides fragilis and bacteroides melaninogenicus by immunofluorescence. | bacteroides fragilis group and bacteroides melaninogenicus group fluorescent-antibody kits were evaluated with 188 clinical specimens and 116 fresh aerobic and anaerobic bacterial isolates. fluorescent-antibody and culture results corresponded in 88% of clinical specimens of the b. fragilis group and 94% of clinical specimens of the b. melaninogenicus group. there was greater than or equal to 90% correlation for both kits with colony smears. antigen sharing by bacteroides bivius, bacteroides dis ... | 1981 | 6112238 |
| presence of diaminopimelic acid in propionate-negative bacteroides species and in some butyric acid-producing strains. | athe presence of diaminopimelic acid (m-dap) in strains of bacteroides melaninogenicus, b. bivius and other species as well as in unidentified strains of bacteroides was investigated by thin-layer chromatography. strains of b. bivius and b. disiens all contained m-dap as did the subspecies intermedius and melaninogenicus of b. melaninogenicus. strains of b. asaccharolyticus and similar black pigment-producing butyrate-positive isolates showed heterogeneity. asaccharolytic strains were dap negati ... | 1981 | 6112277 |
| phospholipase a activity in supernatants from cultures of bacteroides melaninogenicus. | the phospholipase a activity in culture supernatants of two strains of bacteroides melaninogenicus is described. the enzyme utilize phosphatidylcholine as substrate and produce mainly lysophosphatidylcholine and free fatty acids. the activities are ca2+-independent, are not affected by the presence of a chelating agent, have a broad ph range (5-9) and an optimum temperature for activity of approx. 50 degrees c. the activity in a growing bacterial culture increases from the end of the lag phase t ... | 1981 | 6113009 |
| formation of crystalline structures in the cytoplasmic membrane of vitamin k-depleted cells of bacteroides melaninogenicus. | 1981 | 6114384 | |
| periodontosis. part iii: barbados study. | 1981 | 6115707 | |
| [pathogenic bacteria in periodontal diseases]. | 1981 | 6115884 | |
| isolation and characterization of proteases from bacteroides melaninogenicus. | we isolated two types of intracellular proteases from a strain of bacteroides melaninogenicus. these enzymes were extracted from cells by ultrasonic treatment and were partially purified. these two enzymes (proteases i and ii) differed in molecular weight, heat stability, sensitivity to reducing agents, km value, and optimum ph for activity. | 1981 | 6116674 |
| isoelectric focusing of bacteroides melaninogenicus group beta-lactamases. | beta-lactamases extracted by sonication from the bacteroides melaninogenicus group organisms (b. asaccharolyticus, b. melaninogenicus, b. bivius, and b. oralis) were found to be in the form of complexes with molecular weights of greater than or equal to 40 x 10(6), and this resulted in failure to characterize them by isoelectric focusing. purification by el filtration in the presence of deoxycholate resulted in beta-lactamase preparations from b. bivius with pi's of 5.7. a beta-lactamase prepara ... | 1981 | 6117248 |
| use of fluorescence microscopy for monitoring periodontal disease state. | samples of subgingival plaque from patients with periodontal disease and control subjects were stained with the fluoretec fluorescent test kits (pfizer inc., new york) developed for the rapid detection of members of the bacteroides fragilis and b. melaninogenicus groups of anaerobes. the same fluorescent fields were also examined by dark-field microscopy for the total count of bacteria. bacteroides fragilis and b. melaninogenicus were found in plaque samples of healthy subjects and periodontally ... | 1981 | 6117364 |
| [detection of anaerobes by direct immunofluorescence on clinical samples : evaluation of fluoretec f and m (author's transl)]. | immunofluorescence is a method allowing rapid identification of bacteria. the authors study two reagents. fluoretec f and m, respectively detecting bacteroidis fragilis and bacteroidis melaninogenicus. these reactions were carried out directly on the clinical specimens. after a study carried out with 132 clinical specimens, by comparison with the usual techniques for isolation and identification, the following results were seen : fluoretec f showed 89 p. cent concordance, 0.8 p. cent false negat ... | 1981 | 6118083 |
| association of oral bacteroides with gingivitis and adult periodontitis. | 1981 | 6118402 | |
| immunological labeling of oral bacteria after demineralization. an ultrastructural study. | 1981 | 6118403 | |
| effects of estradiol and progesterone on bacteroides melaninogenicus and bacteroides gingivalis. | bacteroides melaninogenicus subsp. intermedius increases in the subgingival microflora during pregnancy. these studies evaluated direct interactions between hormonal steroids and oral bacteroides species. resting cell suspensions of pure cultures of plaque organisms were incubated anaerobically with [14c]estradiol and [14c]progesterone. uptake of labeled compound per microgram of bacterial protein was determined by thin-layer chromatography and liquid scintillation counting. b. melaninogenicus s ... | 1982 | 6119293 |
| microbial etiology of periodontal disease. | 1981 | 6119328 | |
| aerobic and anaerobic bacteriology of peritonsillar abscess in children. | aspiration of peritonsillar abscess (quinsy) was aseptically performed in 16 children. patients' median age was 10 years (range 6 to 17 years), and 12 were males. unilateral abscess was present in all but one child. all aspirates were cultured for aerobes and anaerobes and yielded bacterial growth in all patients. anaerobes were isolated in all patients; in 3 patients (19%), they were the only organism isolated, and in 13 (81%), they were mixed with aerobes. there were 91 anaerobic isolates (5.7 ... | 1981 | 6119870 |
| the 3-ketodihydrosphingosine synthetase of bacteroides melaninogenicus: partial purification and properties. | 1981 | 6119957 | |
| the fluoretec system for rapid diagnosis of bacteroides infections by direct immunofluorescence of clinical specimens. | fluoretec, a commercial kit for the rapid diagnosis by immunofluorescence of infections caused by bacteroides spp was compared with a standard culture method. a total of 1010 specimens were tested for the presence of b fragilis group by fluoretec f and b melaninogenicus-oralis and asaccharolytic groups by fluoretec m. fluoretec f was positive in 123/152 specimens culturing b fragilis group strains. seventeen specimens were positive by fluoretec f but negative on culture. fluoretec m was positive ... | 1981 | 6120183 |
| bacterial invasion of pulpal dentin wall in vitro. | instrumented root canals of extracted human teeth were inoculated with known pulpal bacterial isolates. the inoculated teeth were immersed in the appropriate culture media and incubated at 37 degrees c for varying periods. streptococci multiplied in the root canals and invaded the radicular dentinal tubules. the extent of bacterial invasion was time-dependent. this experimental model of bacterial invasion was time-dependent. this experimental model may be useful in investigating the effect of in ... | 1982 | 6120188 |
| [polyclonal activity of b-lymphocytes in periodontal disease]. | 1981 | 6120446 | |
| beta-lactamase producing bacteria in the human oral cavity. | twenty-six individuals who had no history of long-term antibiotic therapy were examined for the prevalence of beta-lactamase producing bacteria in the oral cavity. samples from a total of 159 normal and diseased periodontal sites, 44 cheek mucosae, 22 tongue dorsa and 22 salivas were studied. penicillin resistant organisms were recovered from trypticase soy blood agar plates containing 1.3 microgram/ml or 2 microgram/ml benzylpenicillin. beta-lactamase formation by these isolates was determined ... | 1982 | 6121020 |
| [anaerobic microflora of praepubertal children (author's transl)]. | bacteriologic cultures of the vagina and the cervix of 38 praepubertal children, aged 3 months to 16 years (average age 9 years) from the outpatient department for infants and juveniles of the 1st department of obstetrics and gynecology of the university of vienna were obtained vaginascopically using anaerobic transportmedia (port a cul) and were examined for aerobic and anaerobic bacteria. an average of 5.3 species was also isolated per child (2.9 aerobic and 2.5 anaerobic species). the commone ... | 1982 | 6121080 |
| anaerobic balanoposthitis. | to assess the causative role of non-sporing anaerobes in cass of erosive balanoposthitis, anaerobic culture was performed on purulent discharges from 104 patients with penile ulceration, a foul-smelling discharge, and a mixed and motile bacterial flora. most of 29 culturally confirmed infections were due to mixed anaerobes and eight to single anaerobes. a rapid response to treatment with metronidazole also confirmed the anaerobic cause of the infection. thus, acute anaerobic balanoposthitis can ... | 1982 | 6121604 |
| bacteroides species and gelatinase-producers in periodontal disease. | 1982 | 6121615 | |
| anaerobic septic arthritis. | during a 3 1/2 year period anaerobic septic arthritis was diagnosed in 43 patients (46 joints). the hip and knee accounted for 83% of the infected joints. anaerobic infections complicated elective musculoskeletal surgery in 23 patients, including 21 with total joint arthroplasties. an additional 12 patients developed septic arthritis following surgical treatment of traumatic injuries of an extremity. gram-positive cocci were the anaerobes most commonly found in these two groups of surgical patie ... | 1982 | 6121642 |
| fatal complications of caroli's disease. | 1982 | 6122376 | |
| characterization of volatile sulphur production by pathogenic and non-pathogenic strains of oral bacteroides. | marked differences were observed in intermediate sulphur metabolism between non-pathogenic strains of bacteroides melaninogenicus var melaninogenicus (cp-) and pathogenic bacteroides melaninogenicus asaccharolyticus (cp+). the cp+ strains, which produced collagenase and protease and caused formation of abscesses when injected subcutaneously into groins of guinea pigs, produced copious amounts of volatile sulphur compounds (vsc) which consisted predominantly of ch3sh and (ch3s)2. hydrogen sulphid ... | 1981 | 6122435 |
| fructose 6-phosphate phosphorylation in bacteroides species. | 6-phosphofructokinase (6-pfk) activities have been measured in cell extracts from a number of bacteroides species. two main types of 6-pfk were found: an atp-linked 6-pfk and a ppi-linked 6-pfk. in most strains both of these activities were found, although in two strains only atp-linked 6-pfk was present. the ppi-linked 6-pfk activity was always higher, when both activities were present, and showed michaelis-menten kinetics with respect to fructose 6-phosphate. in contrast, the atp-linked 6-pfk ... | 1982 | 6122675 |
| the bacteriology of acute necrotizing ulcerative gingivitis. | plaque samples from 22 ulcerated sites in eight patients with anug were cultured using quantitative anaerobic procedures and were examined microscopically. the partial characterization of the predominant cultivable flora revealed a constant flora comprised of a limited number of bacterial types and a variable flora composed of a heterogeneous array of bacterial types. this constant flora would appear to be pathognomonic of acute necrotizing ulcerative gingivitis (anug) and included the various t ... | 1982 | 6122728 |