| [the role of anaerobe adhesion in the colonization of the vaginal mucosa]. | some our previous research works on bacterial adhesion to vaginal cells in the different phases of the menstruum showed that adhesion changes depending on changing environmental conditions. we therefore considered interesting to extend our investigations to anaerobic flora, in the light of recent observations intended to attribute an important role to anaerobic flora in the pathogenesis of vaginitis. the results obtained so far indicate that the maximum adhesion capability is found in the middle ... | 1979 | 45241 |
| [functional significance of bivalent iron and manganese oxidation in leptothrix pseudoochraceae]. | the effect of oxidation of bivalent compounds of iron and manganese was studied on the growth of filamentous iron bacteria. the stimulating action of these metals could not be attributed to utilization of the energy of their oxidation in the assimilation of carbon dioxide or in lithoheterotrophic processes. the cells yield increased because the metal ions removed the toxic metabolite, hydrogen peroxide, which was formed in the respiratory chain upon oxidation of an organic substrate. this functi ... | 1978 | 713873 |
| preliminary studies on the life cycle of leptothrix racemosa, a common organism in dental plaques. | | 1975 | 801605 |
| [therapeutic results achieved through the advantage of a combination of oral metronidazole and vaginal natamycin tablets in urogenital protozoan, trichobacterial and blastomyces infections]. | vaginal inflammations caused by trichomonas, leptothrix vaginalis or candida and other less common organisms respectively, were treated very successfully with a combination of metronidazole orally and a natamycin preparation vaginally (pimafucin vaginal tablets). in women with urogenital trichomoniasis a cure was obtained in 96,1% of the cases (microbiologically controlled); candida mycoses of the vagina were cured clinically in 89% of the cases after the first course of treatment and mycologica ... | 1975 | 1082689 |
| some observations on the occurrence of the iron bacterium leptothrix ochracea in fresh water, including reference to large experimental enclosures. | | 1975 | 1165226 |
| the sphaerotilus-leptothrix group. | | 1975 | 1180519 |
| [leptothrix vaginalis. morphological studies]. | 73 patients with a microscopically confirmed leptothrix vaginalis-infection were examined clinically and cytologically. 80% of the cases showed leptothrix alone or together wihh lactobacilli or cocci. 18% had trichomonas- and 2% candida-infections. 26 cases (34%) showed inflammation of the vagina. the majority of infection was found in the age group 26 to 45 years. a microscopical examination of the leptothrix-filaments revealed a subtile segmentation and sporulation. | 1976 | 1261954 |
| enzymatic iron oxidation by leptothrix discophora: identification of an iron-oxidizing protein. | an iron-oxidizing factor was identified in the spent culture medium of the iron- and manganese-oxidizing bacterial strain leptothrix discophora ss-1. it appeared to be a protein, with an apparent molecular weight of approximately 150,000. its activity could be demonstrated after fractionation of the spent medium by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. a spontaneous mutant of l. discophora ss-1 was isolated which excreted neither manganese- nor iron-oxidizing activity, where ... | 1992 | 1610168 |
| isolation and characterization of an acidophilic, heterotrophic bacterium capable of oxidizing ferrous iron. | a heterotrophic bacterium, isolated from an acidic stream in a disused pyrite mine which contained copious growths of "acid streamers," displayed characteristics which differentiated it from previously described mesophilic acidophiles. the isolate was obligately acidophilic, with a ph range of 2.0 to 4.4 and an optimum ph of 3.0. the bacterium was unable to fix carbon dioxide but oxidized ferrous iron, although at a slower rate than either thiobacillus ferrooxidans or leptospirillum ferrooxidans ... | 1992 | 1622207 |
| freeze-substitution of gram-negative eubacteria: general cell morphology and envelope profiles. | freeze-substitution was performed on strains of escherichia coli, pasteurella multocida, campylobacter fetus, vibrio cholerae, pseudomonas aeruginosa, pseudomonas putida, aeromonas salmonicida, proteus mirabilis, haemophilus pleuropneumoniae, caulobacter crescentus, and leptothrix discophora with a substitution medium composed of 2% osmium tetroxide and 2% uranyl acetate in anhydrous acetone. a thick periplasmic gel ranging from 10.6 to 14.3 nm in width was displayed in e. coli k-12, k30, and hi ... | 1991 | 1999383 |
| bacterial flora in bottled uncarbonated mineral drinking water. | a quantitative study of bacterial populations in mineral water was carried out. samples were stored at 6 and 20 degrees c, and the colony counts were determined on tryptone agar plates incubated at 22 and 37 degrees c. samples were collected from the spring source in sterile glass flasks and from the bottling factory in conventional plastic and glass containers. in both cases, the initial population (10(1)-10(2) cfu/ml water) increased to 10(5)-10(6) cfu/ml after 3 days storage as determined fro ... | 1987 | 3446349 |
| [morphology of fungi in the slides prepared from esophageal balloons]. | 1,762 cases were selected at random from 17,000 persons screened by esophageal balloon in 4 communes of linxian county. the morphologic appearance of fungi was studied in 4 slides of each case selected. according to the shape of clumps formed by fungi and bacteria in the slides, morphologic 4 types were seen: cotton-like, camel hair-like, hair-like and tree-branch-like. in the preliminary microscopic analysis, the following species of fungi were noted: candida, leptothrix, actinomyces, alternari ... | 1986 | 3732022 |
| manganese oxidation by leptothrix discophora. | cells of leptothrix discophora ss1 released mn2+-oxidizing factors into the medium during growth in batch culture. manganese was optimally oxidized when the medium was buffered with hepes (n-2-hydroxyethylpiperazine-n'-2-ethanesulfonic acid) at ph 7.5. manganese-oxidizing activity in the culture medium in which this strain had been grown previously was sensitive to heat, phosphate, tris, nan3, hgcl2 nacl, sodium dodecyl sulfate, and pronase; 0.5 mol of o2 was consumed per mol of mno2 formed. dur ... | 1987 | 3804969 |
| characterization of extracellular mn2+-oxidizing activity and isolation of an mn2+-oxidizing protein from leptothrix discophora ss-1. | supernatant fluid from leptothrix discophora ss-1 cultures possessed high mn2+-ozidizing activity. studies of temperature and ph optima, chemical inhibition, and protease sensitivity suggested that the activity may be enzymatic. kinetic studies of unconcentrated supernatant fluid indicated an apparent km of 7 microm mn2+ in the 1 to 200 microm mn2+ range. the greatest vmax value observed was 1.4 nmol of mn2+ oxidized min-1 micrograms of protein-1 in unconcentrated samples. when the supernatant f ... | 1987 | 3818545 |
| cat scratch disease bacilli in the conjunctiva of patients with parinaud's oculoglandular syndrome. | unilateral conjunctivitis with regional lymphadenitis has been designated parinaud's oculoglandular syndrome (pogs). the cause has been attributed to various infectious agents, especially leptothrix and the unidentified agent of cat scratch disease (csd). in 1983-84 the cause of csd in lymph node and skin was established as small pleomorphic gram-negative bacilli. we now report identical bacteria in the conjunctival lesions of 9 of 24 patients with pogs. this confirms the belief that the csd bac ... | 1985 | 4058889 |
| leptothrix. | | 1972 | 4501871 |
| [leptotrichia (leptothrix) vaginalis]. | | 1972 | 4671249 |
| [bacteria of the sphaerotilus-leptothrix group]. | | 1969 | 4926574 |
| induction of streptococcal chaining in microcultures of oral epithelial cells: leptothrix hyphae. | | 1969 | 5259254 |
| [role of leptothrix in the origin and development of oral soft tissues changes]. | | 1968 | 5293755 |
| [a method of quantitative estimation of manganese-oxidizing leptothrix]. | | 1965 | 5332735 |
| [leptothrix in the vaginal smear. findings in 132 cases]. | | 1970 | 5531795 |
| [on the composition of manganese oxides in metallogenium and leptothrix cultures]. | | 1967 | 5618848 |
| [clinico-statistical studies of the presence of leptothrix in the vaginal smear]. | | 1968 | 5730363 |
| [studies on the incidence of leptothrix vaginalis in vaginal smears]. | | 1966 | 5979517 |
| nocardia gypsoides corneal ulcer. | nocardia gypsoides, a species characterised by its ability to produce calcium sulphate granules, has been isolated for the first time from a corneal ulcer. in vivo this pseudomycete also forms gypsum. every effort should be made to identify actinomycetales to species level. the names leptothrix and streptothrix should be abandoned. | 1984 | 6696871 |
| [biosynthesis of phenylalanine and tyrosine: arogenic acid, a new intermediate product]. | with the discovery of arogenic acid two new pathways for the biosynthesis of phenylalanine and tyrosine have been revealed. the occurrence of two, three, or four pathways for the biosynthesis of phenylalanine and tyrosine in microorganisms and plants may be a useful tool for taxonomic classifications. investigations on enterobacteriaceae, pseudomonads, flavobacteria, streptomycetes, archaebacteria, and on sphaerotilus, trichococcus and leptothrix species from bulking sludge are described. the po ... | 1983 | 6855918 |
| the clinical diagnosis of trichomoniasis. | two hundred twenty-six consecutive women attending an inner-city clinic for sexually transmitted diseases were evaluated. problem-directed histories and physical examinations were conducted and vaginal specimens for wet preparation and trichomonas vaginalis culture were obtained from each patient. one hundred patients were found to be infected. patients with multiple sex partners were found to be at increased risk of trichomoniasis (p less than .05). those with abnormal discharge noted on examin ... | 1982 | 6896368 |
| [recognition of the importance of leptothrix vaginalis in the pathology of female genitalia]. | | 1981 | 7278828 |
| [cytomorphological changes and intensity of inflammation in cervico-vaginal smears containing trichomonas vaginalis, candida albicans, and leptothrix vaginalis]. | | 1980 | 7412371 |
| ultrastructure and chemical composition of the sheath of leptothrix discophora sp-6. | light microscopy and transmission electron microscopy of thin sections and metal-shadowed specimens showed that the sheath of leptothrix discophora sp-6 (atcc 51168) is a tube-like extracellular polymeric structure consisting of a condensed fabric of 6.5-nm-diameter fibrils underlying a more diffuse outer capsular layer. in thin sections, outer membrane bridges seen to contact the inner sheath layer suggested that the sheath fabric was attached to the outer layer of the gram-negative cell wall. ... | 1993 | 7504663 |
| role of disulfide bonds in maintaining the structural integrity of the sheath of leptothrix discophora sp-6. | isolated sheaths of leptothrix discophora sp-6 (atcc 51168) were tested for susceptibility to degradation by a variety of chemical denaturants and lytic enzymes and found to be resistant to many reagents and enzyme treatments. however, disulfide bond-reducing agents such as dithiothreitol (dtt), beta-mercaptoethanol, sodium cyanide, and sodium sulfite degraded the sheath, especially at elevated ph (ph 9) and temperature (50 degrees c). dtt and beta-mercaptoethanol caused more rapid degradation o ... | 1993 | 8253670 |
| epidemiologic differences between candidial and trichomonal infections as detected in cytologic smears in taiwan. | the epidemiologic differences between cytology-detected candidial and trichomonal infections were assessed in 15,933 women attending the 12 district health centres in the taipei area and a consecutive 1114 patients, visiting venereal disease clinics, whose smears were screened for cervical cancer between july 1991 and december 1992 in taipei. the pap smears were examined for the presence of specific organisms, such as trichomonas vaginalis, vaginal candida, herpes simplex virus, human papillomav ... | 1995 | 8570805 |
| the sphaerotilus-leptothrix group of bacteria. | | 1978 | 353479 |
| phylogeny of the sphaerotilus-leptothrix group inferred from morphological comparisons, genomic fingerprinting, and 16s ribosomal dna sequence analyses. | phase-contrast light microscopy revealed that only one of eight cultivated strains belonging to the sphaerotilus-leptothrix group of sheathed bacteria actually produced a sheath in standard growth media. two sphaerotilus natans strains produced branched cells, but other morphological characteristics that were used to identify these bacteria were consistent with previously published descriptions. genomic fingerprints, which were obtained by performing pcr amplification with primers corresponding ... | 1996 | 8573492 |
| characterization of bacterial communities from activated sludge: culture-dependent numerical identification versus in situ identification using group- and genus-specific rrna-targeted oligonucleotide probes | the structures of bacterial communities were studied in activated sludge samples obtained from the aerobic and anaerobic zones of a wastewater treatment plant showing enhanced phosphorous removal. samples were analyzed by in situ hybridization with oligonucleotide probes complementary to selected regions of the 16s and 23s ribosomal rna (rrna) characteristic for defined phylogenetic entities (genera and larger groups). the microbial community structures revealed by molecular techniques were comp ... | 1996 | 8688004 |
| development and application of 16s rrna-targeted probes for detection of iron- and manganese-oxidizing sheathed bacteria in environmental samples. | comparative sequence analysis of the 16s rrna genes from several leptothrix and sphaerotilus strains led to the design of an oligonucleotide probe (ps-1) based on a sequence within the hypervariable region 1 specific for four leptothrix strains and for one of the four sphaerotilus natans strains examined. another probe (psp-6) was based on a sequence within the hypervariable region 2. psp-6 was specific for one of the two evolutionary lineages previously described for leptothrix spp. (p. l. sier ... | 1997 | 9023942 |
| [laboratory diagnosis of bacterial vaginosis]. | microbiological analysis of discharge from the genitals in passenger car conductors (5787 women and 1496 men aged 20 to 40) showed gardnerella vaginalis to be the most frequent agent of urogenital infection. it was isolated in 26% cases, whereas trichomonas were isolated in 2.5%, fungi in 1.5%, and gonococci in 0.27% cases. the diagnosis of gardnerellosis is reliable if the key cells are found. monoinfection with g. vaginalis was diagnosed in 80% patients, the overwhelming majority (74%) of carr ... | 1997 | 9410459 |
| specific ribosomal dna sequences from diverse environmental settings correlate with experimental contaminants. | phylogenetic analysis of 16s ribosomal dna (rdna) clones obtained by pcr from uncultured bacteria inhabiting a wide range of environments has increased our knowledge of bacterial diversity. one possible problem in the assessment of bacterial diversity based on sequence information is that pcr is exquisitely sensitive to contaminating 16s rdna. this raises the possibility that some putative environmental rrna sequences in fact correspond to contaminant sequences. to document potential contaminant ... | 1998 | 9687486 |
| production of biogenic mn oxides by leptothrix discophora ss-1 in a chemically defined growth medium and evaluation of their pb adsorption characteristics | biogenic mn oxides were produced by the bacterium leptothrix discophora ss-1 (= atcc 3182) in a chemically defined mineral salts medium, and the pb binding and specific surface area of these oxides were characterized. growth of ss-1 in the defined medium with pyruvate as a carbon and energy source required the addition of vitamin b12. complete oxidation of mn(ii) within 60 h required the addition of >/=0.1 &mgr;m feso4. pb adsorption isotherms were determined for the biogenic mn oxides (and asso ... | 1999 | 9872777 |
| roseateles depolymerans gen. nov., sp. nov., a new bacteriochlorophyll a-containing obligate aerobe belonging to the beta-subclass of the proteobacteria. | strains 61at (t = type strain) and 61b2, the first bacteriochlorophyll (bchl) a-containing obligate aerobes to be classified in the beta-subclass of the proteobacteria, were isolated from river water. the strains were originally isolated as degraders of poly(hexamethylene carbonate) (phc). the organisms can utilize phc and some other biodegradable plastics. the strains grow only under aerobic conditions. good production of bchl a and caroterioid pigments is achieved on phc agar plates and an equ ... | 1999 | 10319464 |
| phylogenetic relationships among members of the comamonadaceae, and description of delftia acidovorans (den dooren de jong 1926 and tamaoka et al. 1987) gen. nov., comb. nov. | the phylogenetic relationships among members of the family comamonadaceae and several unclassified strains were studied by direct sequencing of their pcr-amplified 16s rrna genes. based on the 16s rrna gene sequence analysis, members of the family formed a coherent group. the closest relatives are species of the rubrivivax sub-group: leptothrix discophora, ideonella dechloratans and rubrivivax gelatinosus. the genus hydrogenophaga formed two subclusters, as did the species of acidovorax, whereas ... | 1999 | 10319477 |
| marine bacillus spores as catalysts for oxidative precipitation and sorption of metals. | the oxidation of soluble manganese(ii) to insoluble mn(iii,iv) oxide precipitates plays an important role in the environment. these mn oxides are known to oxidize numerous organic and inorganic compounds, scavenge a variety of other metals on their highly charged surfaces, and serve as electron acceptors for anaerobic respiration. although the oxidation of mn(ii) in most environments is believed to be bacterially-mediated, the underlying mechanisms of catalysis are not well understood. in recent ... | 1999 | 10941787 |
| bacterial and archaeal populations associated with freshwater ferromanganous micronodules and sediments. | biology is believed to play a large role in the cycling of iron and manganese in many freshwater environments, but specific microbial groups indigenous to these systems have not been well characterized. to investigate the populations of bacteria and archaea associated with metal-rich sediments from green bay, wi, we extracted nucleic acids and analysed the phylogenetic relationships of cloned 16s rrna genes. because nucleic acids have not been routinely extracted from metal-rich samples, we inve ... | 2001 | 11225719 |
| isolate pm1 populations are dominant and novel methyl tert-butyl ether-degrading bacterial in compost biofilter enrichments. | the gasoline additive mtbe, methyl tert-butyl ether, is a widespread and persistent groundwater contaminant. mtbe undergoes rapid mineralization as the sole carbon and energy source of bacterial strain pm1, isolated from an enrichment culture of compost biofilter material. in this report, we describe the results of microbial community dna profiling to assess the relative dominance of isolate pm1 and other bacterial strains cultured from the compost enrichment. three polymerase chain reaction (pc ... | 2001 | 11321538 |
| the discs of leptothrix discophora: lost for 89 years? | | 2001 | 11390670 |
| the effects of ph and surface composition on pb adsorption to natural freshwater biofilms. | two dominant variables that control the adsorption of toxic trace metals to suspended particulate materials and aquatic surface coatings are surface composition and solution ph. a model for the ph-dependent adsorption of pbto heterogeneous particulate surface mixtures was derived from experimental evaluation of pb adsorption to laboratory-derived surrogates. the surrogate materials were selected to represent natural reactive surface components. pb adsorption to both the laboratory surrogates and ... | 2001 | 11505999 |
| effect of oxide formation mechanisms on lead adsorption by biogenic manganese (hydr)oxides, iron (hydr)oxides, and their mixtures. | the effects of iron and manganese (hydr)oxide formation processes on the trace metal adsorption properties of these metal (hydr)oxides and their mixtures was investigated by measuring lead adsorption by iron and manganese (hydr)oxides prepared by a variety of methods. amorphous iron (hydr)oxide formed by fast precipitation at ph 7.5 exhibited greater pb adsorption (gamma(max) = 50 mmol of pb/mol of fe at ph 6.0) than iron (hydr)oxide formed by slow, diffusion-controlled oxidation of fe(ii) at ph ... | 2002 | 11871557 |
| caldimonas manganoxidans gen. nov., sp. nov., a poly(3-hydroxybutyrate)-degrading, manganese-oxidizing thermophile. | a poly(3-hydroxybutyrate) (phb)-degrading, gram-negative, aerobic bacterium, strain hs(t), was isolated from a hot spring and chemotaxonomically and phylogenetically characterized. the oxidase-positive, weakly catalase-positive, non-pigmented cells (0.6 x 2.6 microm) exhibited a single polar flagellum and accumulated phb granules. strain hs(t) was capable of manganese oxidation. highest growth rate was attained at 50 degrees c. the optimum ph for growth was 7-8. the major respiratory quinone was ... | 2002 | 12054255 |
| multiple substrate growth kinetics of leptothrix discophora sp-6. | the growth parameters of leptothrix discophora sp-6 were quantified on the basis of the steady-state concentrations and utilization rates of pyruvate, dissolved oxygen, and concentration of microorganisms in a chemostat operated at 25 degrees c, ph 7.2, and an agitation rate of 350 rpm. the results showed that the microbial growth was limited by both pyruvate and dissolved oxygen. a combined growth kinetics model using monod growth kinetics for pyruvate and tessier growth kinetics for oxygen sho ... | 2002 | 12363350 |
| bacterioplankton community structure in a maritime antarctic oligotrophic lake during a period of holomixis, as determined by denaturing gradient gel electrophoresis (dgge) and fluorescence in situ hybridization (fish). | the bacterioplankton community structure in moss lake, a maritime antarctic oligotrophic lake, was determined with vertical depth in the water column, during the ice-free period on signy island in the south orkney islands. bacterioplankton community structure was determined using a combination of direct counting of 4',6-diamidino-2-phenylindole (dapi) stained cells, pcr amplification of 16s rrna gene fragments, denaturing gradient gel electrophoresis (dgge) and in situ hybridization with group-s ... | 2003 | 12739078 |
| the occurrence of leptothrix ochracea in natural waters in the adelaide hills. | | 1952 | 12977684 |
| treatment before the era of antibiotics of a case of prolonged unusual cellulitis of the face and neck following the extraction of a first maxillary molar due to leptothrix. | | 1952 | 13003152 |
| [seborrhea sicca on hair simulating clinical symptoms of piedra and leptotricosis]. | | 1952 | 13032214 |
| caenibacterium thermophilum gen. nov., sp. nov., isolated from a thermophilic aerobic digester of municipal sludge. | a bacterial strain, n2-680(t) (=dsm 15264(t)=lmg 21760(t)), isolated from a thermophilic aerobic digester of municipal sludge, was characterized with respect to its morphology, physiology and taxonomy. phenotypically, the isolate was a gram-negative rod with a polar flagellum, catalase- and oxidase-positive, containing cytoplasmic inclusions of poly-beta-hydroxybutyrate and had an optimal growth temperature of about 47 degrees c. strain n2-680(t) was unable to reduce nitrate and could use organi ... | 2003 | 13130021 |
| leptothricosis conjunctivae (parinaud's conjunctivitis): report of 13 cases; relationship to cat-scratch disease. | | 1952 | 13136404 |
| [peculiar cytology of the vaginal smear in pregnancy caused by filiform microorganisms]. | | 1953 | 13147490 |
| leptothrix racemosa in open cavities. | | 1955 | 13242729 |
| [not available]. | | 1957 | 13398661 |
| [studies on metabolic physiology of iron bacteria leptothrix ochracea kutzing]. | | 1957 | 13522127 |
| the morphology of leptotrichia species. | | 1958 | 13611186 |
| cell-wall composition of leptotrichia spp. | | 1959 | 13657058 |
| leptospirosis of white laboratory rats. | | 1961 | 13702743 |
| the classification of organisms termed leptotrichia (leptothrix) buccalis. iii. growth and biochemical characteristics of bacterionema matruchotil. | | 1961 | 13705432 |
| the classification of organisms termed leptotrichia (leptothrix) buccalis. i. review of the literature and proposed separation into leptotrichia buccalis trevisan, 1879 and bacterionema gen. nov., b. matruchotti (mendel, 1919) comb. nov. | | 1961 | 13705433 |
| the classification of organisms termed leptotrichia (leptothrix) buccalis. ii. reproduction of bacterionema matruchotii. | | 1961 | 13705434 |
| the classification of organisms termed leptotrichia (leptothrix) buccalis. iv. physiological and biochemical characteristics of bacterionema matruchotii. | | 1961 | 13716258 |
| agglutinins for 11 types of leptospires in serum from cattle in northeastern texas. | | 1961 | 13735699 |
| leptospirosis. | | 1960 | 13857564 |
| serology of bacterionema matruchotii. | schmidt, jean m. (state university of iowa, iowa city) and robert l. richardson. serology of bacterionema matruchotii. j. bacteriol. 83:584-589. 1962.-serological relationships of bacterionema matruchotii were studied by means of the complement-fixation reaction. a common complement-fixing antigen was demonstrated in 37 strains of this organism. serological relationships to species in the genera mycobacterium, nocardia, actinomyces, and corynebacterium were shown by means of reciprocal complemen ... | 1962 | 13908761 |
| serological specificity of acid-soluble antigens of bacterionema matruchottii. | sibal, louis r. (university of illinois college of medicine, chicago), arthur v. kroeger, dan kumarich, and esther meyer. serological specificity of acid-soluble antigens of bacterionema matruchottii. j. bacteriol. 83:811-818. 1962.-the serological specificity of acid-soluble antigens extracted from the oral, filamentous organism, bacterionema matruchottii, was demonstrated by the microprecipitin reaction. there was no evidence of cross-reaction with antisera prepared against leptotrichia buccal ... | 1962 | 13912471 |
| isolation, growth requirements, and pathogenicity for rabbits of leptotrichia dentium. | | 1962 | 13919403 |
| prevalence of actin-omyces israelii, a. naeslundii, bacterionema matruchotii, and candida albicans in selected areas of the oral cavity and saliva. | | 1962 | 13955156 |
| the morphology of an anaerobic oral filamentous microorganism as revealed by electron microscopy. | | 1962 | 13980846 |
| electron microscopy of intracellular mineralization of oral filamentous microorganisms in vitro. | | 1963 | 13984628 |
| acridine-orange fluorescence microscopy in the detection of pathogenic vaginal flora. | | 1962 | 13996093 |
| the formation of calculus-like deposits by pure cultures of bacteria. | | 1961 | 14014604 |
| investigations on the sphaerotilusleptothrix group. | | 1963 | 14047145 |
| selective medium for fusobacteria and leptotrichia. | | 1963 | 14051807 |
| [on the diagnosis and therapy of actinomycosis and leptotrichosis]. | | 1963 | 14053077 |
| immunochemical analysis of human oral strains of fusobacterium and leptotrichia. | de araujo, wilson c. (national institute of dental research, bethesda, md.), eileen varah, and stephan e. mergenhagen. immunochemical analysis of human oral strains of fusobacterium and leptotrichia. j. bacteriol. 86:837-844. 1963.-lipopolysaccharides, isolated by phenol-water extraction of 27 strains of oral gram-negative bacteria conforming either to fusobacterium polymorphum or leptotrichia buccalis, were shown to be endotoxic by their ability to alter dermal reactivity to epinephrine and to ... | 1963 | 14066482 |
| attempt to stimulate dental calculi in cats by subgingival implantation of bacterionema matruchotii. | | 1963 | 14081968 |
| [experimental research on the pathogenicity of certain ferruginous bacteria]. | | 1963 | 14170979 |
| growth of a leptothrix strain in a chemically defined medium. | | 1964 | 14215439 |
| [on tonsillar leptotrichosis]. | | 1964 | 14260403 |
| [differential diagnosis of parinaud's conjunctivo-glandular syndrome]. | | 1955 | 14352779 |
| [not available]. | | 1954 | 14356535 |
| temporal change in culturable phenanthrene degraders in response to long-term exposure to phenanthrene in a soil column system. | widespread environmental contamination by polycyclic aromatic hydrocarbons (pah) has led to increased interest in the use of natural attenuation as a clean-up strategy. however, few bioremediation studies have investigated the behaviour of the indigenous pah-degrading community after long-term exposure to a pah. in this study, a column packed with sandy loam soil was exposed to a solution saturated with phenanthrene ( approximately 1.2 mg l-1) for a 6-month period to examine the temporal respons ... | 2003 | 14510842 |
| nanocrystalline todorokite-like manganese oxide produced by bacterial catalysis. | we describe the characterization of an unknown and difficult to identify but geochemically and environmentally significant mnox structure produced by a freshwater bacterium, leptothrix discophora sp-6, using combined transmission electron microscopy (tem), extended x-ray absorption fine structure (exafs), and uv raman spectroscopy. the large surface-to-volume ratio of the needle-shaped nanocrystalline mno2 formed around the bacterial cells coupled to the porous, zeolite-like structure has the po ... | 2003 | 14624570 |
| oculoglandular conjunctivitis due to leptothrix. | | 1950 | 14779254 |
| [leptothrix--an unusual causative agent of a pleuroempyema]. | | 1951 | 14814807 |
| leptotrichosis conjunctivae. | | 1952 | 14925305 |
| leptotrichia (leptothrix) vaginalis. | | 1952 | 14952533 |
| role of leptothrix discophora in mediating metal uptake in the filter-feeding bivalve mytilus trossulus (edulis). | the potential for filter-feeding bivalves to accumulate metals from a wide range of food sources is an important consideration when examining trophic transfer of metals up the food chain. the objective of this study was to determine the role of leptothrix discophora in mediating metal uptake in the filter-feeding bivalve mytilus trossulus. the bacterium l. discophora sp-6 was cultured in the absence or presence of mn, allowing for a naturally formed mn oxide sheath to develop. secondary metals ( ... | 2004 | 14968863 |
| microbial polysaccharides template assembly of nanocrystal fibers. | biological systems can produce extraordinary inorganic structures and morphologies. the mechanisms of synthesis are poorly understood but are of great interest for engineering novel materials. we use spectromicroscopy to show that microbially generated submicrometer-diameter iron oxyhydroxide (feooh) filaments contain polysaccharides, providing an explanation for the formation of akaganeite pseudo-single crystals with aspect ratios of approximately 1000:1. we infer that the cells extrude the pol ... | 2004 | 15016997 |
| biocenosis of bac(f)s used for groundwater treatment. | the studies on the biocenosis of biologically active carbon filters (bac(f)) used in treatment of miocene water revealed the presence of protozoa of the group of flagellates and ciliates (glaucoma sp., opercularia sp.), saprophytic bacteria, phase i and ii nitrifying bacteria, fe(ii) and mn(ii) oxidizing bacteria of the family siderocapsaceae, leptothrix ochracea and pedomicrobium sp., as well as microscopic fungi. the stratification of biofilter colonisation by these microorganisms was found to ... | 2004 | 15026224 |
| laboratory modelling of manganese biofiltration using biofilms of leptothrix discophora. | laboratory biofilters (pilot-scale, 20 l and laboratory-scale, 5l) were constructed in order to model the bioaccumulation of manganese (mn) under flow conditions similar to those occurring in biofilters at groundwater treatment sites. the biofilters were operated as monocultures of leptothrix discophora, the predominant organism in mature mn oxidising biofilms. biologically mediated mn bioaccumulation was successfully modelled in both filter systems. the data obtained showed that in the small-sc ... | 2004 | 15026240 |
| biological treatment of mn(ii) and fe(ii) containing groundwater: kinetic considerations and product characterization. | in the present article, the treatment of groundwater containing mn(ii) and fe(ii) has been investigated. the biological oxidation of mn(ii) and fe(ii) in upflow filtration units comprised the applied experimental technique. the oxidation processes were mediated by specific bacteria, namely the leptothrix ochracea and gallionella ferruginea, which belong to the general category of manganese and iron oxidizing bacteria. this work was focused on the characterization of the products of biological ox ... | 2004 | 15026247 |
| inhibiting mild steel corrosion from sulfate-reducing and iron-oxidizing bacteria using gramicidin-s-producing biofilms. | a gramicidin-s-producing bacillus brevis 18-3 biofilm was shown to reduce corrosion rates of mild steel by inhibiting both the sulfate-reducing bacterium desulfosporosinus orientis and the iron-oxidizing bacterium leptothrix discophora sp-6. when l. discophora sp-6 was introduced along with d. orientis to a non-antimicrobial-producing biofilm control, paenibacillus polymyxa atcc 10401, a corrosive synergy was created and mild steel coupons underwent more severe corrosion than when only d. orient ... | 2004 | 15278311 |
| leptothrix as a cause of brain abscess; report of two cases. | | 1949 | 15391852 |