Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
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| chemistry and biological activities of tanacetum chiliophyllum var. oligocephalum extracts. | tanacetum chiliophyllum (fisch. & mey.) var. oligocephalum (d.c.) sosn. collected in turkey was subjected to phytochemical and biological evaluations in this study. pure compounds were obtained from ethyl acetate extracts of the stems of the plant material. structures of isolated compounds were determined using spectral methods. seven known flavones, i.e., 5-hydroxy-3',4',6,7-tetramethoxyflavone, eupatilin (6-hydroxyluteolin-6,3',4'-trimethylether), cirsimaritin (scuttellarin-6,7-dimethylether), ... | 2016 | 24645497 |
| effect of lead on growth, protein and biosorption capacity of bacillus cereus isolated from industrial effluent. | a bacterial strain (bacillus cereus) with the ability to grow under conditions of high concentrations of lead was isolated from the industrial effluent collected from peenya industrial area, bangalore. the effect of lead on growth, protein content and lead biosorption capacity of bacillus cereus was investigated. the results revealed that with increase in lead concentration (100, 200, 300, 400 and 500 mg i(-1)) there was a decrease in growth, protein content (10.6, 8.2, 6.7, 3.8 and 1.9 mg g(-1) ... | 2014 | 24665770 |
| survival of foodborne pathogenic bacteria (bacillus cereus, escherichia coli o157:h7, salmonella enterica serovar typhimurium, staphylococcus aureus, and listeria monocytogenes) and bacillus cereus spores in fermented alcoholic beverages (beer and refined rice wine). | only limited information is available on the microbiological safety of fermented alcoholic beverages because it is still a common belief that such beverages do not provide a favorable environment for bacterial growth and survival. thus, in this study, we examined the survival of major foodborne pathogens and spores in fermented alcoholic beverages. foodborne pathogens (bacillus cereus, escherichia coli o157:h7, listeria monocytogenes, salmonella enterica serovar typhimurium, and staphylococcus a ... | 2014 | 24674433 |
| gene detection and toxin production evaluation of hemolysin bl of bacillus cereus isolated from milk and dairy products marketed in brazil. | bacillus cereusis an ubiquitous, spore-forming bacteria that can survive pasteurization and the majority of the heating processes used in the dairy industry. besides, it is a pathogen responsible for different types of food poisoning. one type of foodborne disease caused by b.cereusis the diarrheal syndrome, which is caused by the ingestion of vegetative cells producing toxins in the small intestine. one virulence factor for the diarrheal syndrome is the toxin hemolysin bl (hbl), a three-compone ... | 2013 | 24688511 |
| bioaugmentation treatment of mature landfill leachate by new isolated ammonia nitrogen and humic acid resistant microorganism. | the mature landfill leachate, which is characterized by a high concentration of ammonia nitrogen (nh3-n) and humic acid (ha), poses a challenge to biotreatment methods, due to the constituent toxicity and low biodegradable fraction of the organics. in this study, we applied bioaugmentation technology in landfill leachate degradation by introducing a domesticated nh3-n and ha resistant bacteria strain, which was identified as bacillus cereus (abbreviated as b. cereus jlu) and enterococcus casseli ... | 2014 | 24690637 |
| antibacterial activities and in vitro anti-inflammatory (membrane stability) properties of methanolic extracts of gardenia coronaria leaves. | this work is carried out with gardenia coronaria leaves that belong to the family rubiaceae, which is a small-to-medium-sized but tall, deciduous tree, 7.6-9 m high on an average. leaves are used for the treatment of rheumatic pain and bronchitis. the leaf of the plant consists of coronalolide, coronalolic acid, coronalolide methyl ester, ethyl coronalolate acetate triterpenes (secocycloartanes), and so forth. methanol extract from the leaves of gardenia coronaria was completely screened for mem ... | 2014 | 24695677 |
| antifungal and antibacterial metabolites from an endophytic aspergillus sp. associated with melia azedarach. | seven known metabolites, dianhydro-aurasperone c (1), isoaurasperone a (2), fonsecinone a (3), asperpyrone a (4), asperazine (5), rubrofusarin b (6) and (r)-3-hydroxybutanonitrile (7), were isolated from the culture of aspergillus sp. kj-9, a fungal endophyte isolated from melia azedarach and identified by spectroscopic methods. all isolates were evaluated in vitro against several phytopathogenic fungi (gibberella saubinetti, magnaporthe grisea, botrytis cinerea, colletotrichum gloeosporioides a ... | 2014 | 24708541 |
| two unrelated episodes of bacillus cereus bacteremia in a neonatal intensive care unit. | 2014 | 24725514 | |
| metabolomic analysis of cooperative adaptation between co-cultured bacillus cereus and ketogulonicigenium vulgare. | the cooperative adaptation of subcultivated bacillus cereus and ketogulonicigenium vulgare significantly increased the productivity of 2-keto-l-gulonic acid, the precursor of vitamin c. the mechanism of cooperative adaptation of the serial subcultivated b. cereus and k. vulgare was investigated in this study by culturing the two strains orthogonally on agar plates. it was found that the swarming distance of b. cereus along the trace of k. vulgare on the plate decreased after 150 days' subcultiva ... | 2014 | 24728527 |
| antimicrobial potential of bacteriocin producing lysinibacillus jx416856 against foodborne bacterial and fungal pathogens, isolated from fruits and vegetable waste. | in this study, antimicrobial potential, some probiotics properties and bacteriocin nature of lysinibacillus, isolated from fruits and vegetable waste were evaluated. for this, 125 lactobacillus isolates were tested against foodborne bacterial and fungal pathogens. among these, an isolated bacillus spp. showed significant aggregation-co-aggregation probiotics properties and potentially inhibits the foodborne gram positive microbial pathogens such as staphylococcus aureus, (22 mm zoi), staphylococ ... | 2014 | 24735603 |
| isolation and characterization of broad spectrum coaggregating bacteria from different water systems for potential use in bioaugmentation. | the bridging bacteria with broad-spectrum coaggregation ability play an important role during multispecies-biofilm development. in this study, through a visual and semi-quantitative assay, twenty-two bacterial strains with aggregation ability were obtained from 8 different water environments, and these strains were assigned to 7 genera according to their 16s rdna and they were aeromonas, bacillus, comamonas, exiguobacterium, pseudomonas, shewanella and comamonas. furthermore, all possible 231 pa ... | 2014 | 24736645 |
| isolation and structural elucidation of antioxidant peptides from oyster (saccostrea cucullata) protein hydrolysate. | protein derived from the oyster (saccostrea cucullata) was hydrolyzed using protease from bacillus cereus su12 for isolation of antioxidant peptides. the oyster hydrolysate exhibited a strong antioxidant potential in dpph (85.7±0.37%) followed by hydrogen peroxide radical scavenging activity (81.6±0.3%), hydroxyl radical-scavenging activity (79.32±0.6%), reducing power assay (2.63±0.2 od at 700nm). due to the high antioxidant potential, hydrolysate was fractionated in sephadex g-25 gel filtratio ... | 2014 | 24746143 |
| isolation and characterization of cr (vi) tolerant bacteria from tannery waste and its bioremediation potential. | the east kolkata wetland, situated in west bengal, india, is presently being exploited by housing many leather complexes surrounding the zone in and around. high amount of either untreated or partially treated liquid tannery wastes are discharged in the wetland. treated effluent from some common effluent treatment plant (cetp) showed the presence of cr (vi) exceeding the limiting concentration. three different bacterial strains (l1, l2, and l3) were isolated from the treated effluent. morphologi ... | 2012 | 24749383 |
| microwave-assisted synthesis of diverse pyrrolo[3,4-c]quinoline-1,3-diones and their antibacterial activities. | with the aim of developing a general and practical method for library production, a novel and efficient two-phase microwave-assisted cascade reaction between isatins and β-ketoamides in [bmim]bf4/toluene was developed for the synthesis of pyrrolo[3,4-c]quinoline-1,3-diones. the features of this methodology are, the use of microwave-assisted rapid synthesis, mild reaction conditions, high yields, operational simplicity, facile product separation, and recyclability. furthermore, the antibacterial ... | 2014 | 24749663 |
| the phosphotransferase system gene ptsi in the endophytic bacterium bacillus cereus is required for biofilm formation, colonization, and biocontrol against wheat sharp eyespot. | natural resistance of wheat plants to wheat sharp eyespot is inadequate, and new strategies for controlling the disease are required. biological control is an alternative and attractive way of reducing the use of chemicals in agriculture. in this study, we investigated the biocontrol properties of endophytic bacterium bacillus cereus strain 0-9, which was isolated from the root systems of healthy wheat varieties. the phosphotransferase system is a major regulator of carbohydrate metabolism in ba ... | 2014 | 24750250 |
| synthesis, characterization and antimicrobial activity of dextran stabilized silver nanoparticles in aqueous medium. | a simple one-step rapid synthetic route is described for the preparation of silver nanoparticles by reduction of silver nitrate (agno3) using aqueous dextran solution which acts as both reducing and capping agent. the formation of silver nanoparticles is assured by characterization with uv-vis spectroscopy, atomic force microscopy (afm), transmission electron microscopy (tem) and x-ray diffraction (xrd). the absorbance of the silver nanoparticles is observed at 423 nm. the afm image clearly show ... | 2012 | 24750927 |
| affinity purification of recombinant proteins using a novel silica-binding peptide as a fusion tag. | we recently reported that silica is deposited on the coat of bacillus cereus spores as a layer of nanometer-sized particles (hirota et al. 2010 j bacteriol 192: 111-116). gene disruption analysis revealed that the spore coat protein cotb1 mediates the accumulation of silica (our unpublished results). here, we report that b. cereus cotb1 (171 amino acids [aa]) and its c-terminal 14-aa region (corresponding to residues 158-171, designated cotb1p) show strong affinity for silica particles, with dis ... | 2014 | 24756322 |
| antimicrobial and antiinsectan phenolic metabolites of dalea searlsiae. | continued interest in the chemistry of dalea spp. led to investigation of dalea searlsiae, a plant native to areas of the western united states. methanol extractions of d. searlsiae roots and subsequent chromatographic fractionation afforded the new prenylated and geranylated flavanones malheurans a-d (1-4) and known flavanones (5 and 6). known rotenoids (7 and 8) and isoflavones (9 and 10) were isolated from aerial portions. structure determination of pure compounds was accomplished primarily b ... | 2014 | 24761805 |
| water-based oligochitosan and nanowhisker chitosan as potential food preservatives for shelf-life extension of minced pork. | water-based chitosans in the forms of oligochitosan (oligocs) and nanowhisker chitosan (cswk) are proposed as a novel food preservative based on a minced pork model study. the high surface area with a positive charge over the neutral ph range (ph 5-8) of oligocs and cswk lead to an inhibition against gram-positive (staphylococcus aureus, listeria monocytogenes, and bacillus cereus) and gram-negative microbes (salmonella enteritidis and escherichia coli o157:h7). in the minced pork model, oligocs ... | 2014 | 24767083 |
| purification and identification of metabolites produced by bacillus cereus and b. subtilis active against meloidogyne exigua, and their in silico interaction with a putative phosphoribosyltransferase from m. incognita. | to contribute to the development of products to control meloidogyne exigua, the bacteria bacillus cereus and b. subtilis were cultivated in liquid medium to produce metabolites active against this plant-parasitic nematode. fractionation of the crude dichloromethane extracts obtained from the cultures afforded uracil, 9h-purine and dihydrouracil. all compounds were active against m. exigua, the latter being the most efficient. this substance presented a lc50 of 204 µg/ml against the nematode, whi ... | 2014 | 24770454 |
| phytochemistry and preliminary assessment of the antibacterial activity of chloroform extract of amburana cearensis (allemão) a.c. sm. against klebsiella pneumoniae carbapenemase-producing strains. | the chloroform extract of the stem bark of amburana cearensis was chemically characterized and tested for antibacterial activity.the extract was analyzed by gas chromatography and mass spectrometry. the main compounds identified were 4-methoxy-3-methylphenol (76.7%), triciclene (3.9%), α -pinene (1.0%), β -pinene (2.2%), and 4-hydroxybenzoic acid (3.1%). preliminary antibacterial tests were carried out against species of distinct morphophysiological characteristics: escherichia coli, salmonella ... | 2014 | 24772183 |
| the ability of an antimicrobial agent to penetrate a biofilm is not correlated with its killing or removal efficiency. | the penetration ability of 12 antimicrobial agents, including antibiotics and biocides, was determined against biofilms of b. cereus and p. fluorescens using a colony biofilm assay. the surfactants benzalkonium chloride (bac) and cetyltrimethyl ammonium bromide (ctab), and the antibiotics ciprofloxacin and streptomycin were of interest due to their distinct activities. erythromycin and ctab were retarded by the presence of biofilms, whereas ciprofloxacin and bac were not. the removal and killing ... | 2014 | 24773258 |
| characterization of the extracellular biodemulsifiers secreted by bacillus cereus lh-6 and the enhancement of demulsifying efficiency by optimizing the cultivation conditions. | a highly efficient demulsifying strain, lh-6, was isolated from petroleum-contaminated soil and identified as bacillus cereus by 16s rdna gene analysis. it achieved 95.61 and 95.40 % demulsifying ratios within 12 h for water-in-oil (w/o) and oil-in-water (o/w) model emulsions, respectively. fourier transform infrared spectroscopy (ft-ir) and thin-layer chromatography (tlc) detections indicated that the lh-6's extracellular biodemulsifiers were different types of lipopeptides for the w/o and o/w ... | 2014 | 24777330 |
| a rifamycin inactivating phosphotransferase family shared by environmental and pathogenic bacteria. | many environmental bacteria are multidrug-resistant and represent a reservoir of ancient antibiotic resistance determinants, which have been linked to genes found in pathogens. exploring the environmental antibiotic resistome, therefore, reveals the diversity and evolution of antibiotic resistance and also provides insight into the vulnerability of clinically used antibiotics. in this study, we describe the identification of a highly conserved regulatory motif, the rifampin (rif) -associated ele ... | 2014 | 24778229 |
| multitrait plant growth promoting (pgp) rhizobacterial isolates from brassica juncea rhizosphere : keratin degradation and growth promotion. | plant growth promoting (pgp) rhizobacteria, a beneficial microbe colonizing plant roots, enhanced crop productivity and offers an attractive way to replace chemical fertilizers, pesticides, and supplements. the keratinous waste which comprises feathers, hairs, nails, skin and wool creates problem of solid waste management due to presence of highly recalcitrant keratin. the multi traits rhizobacteria effective to remove both keratine from the environment by producing keratinase enzyme and to erad ... | 2014 | 24778758 |
| draft genome sequences of two bacillus thuringiensis strains and characterization of a putative 41.9-kda insecticidal toxin. | in this work, we report the genome sequencing of two bacillus thuringiensis strains using illumina next-generation sequencing technology (ngs). strain hu4-2, toxic to many lepidopteran pest species and to some mosquitoes, encoded genes for two insecticidal crystal (cry) proteins, cry1ia and cry9ea, and a vegetative insecticidal protein (vip) gene, vip3ca2. strain leapi01 contained genes coding for seven cry proteins (cry1aa, cry1ca, cry1da, cry2ab, cry9ea and two cry1ia gene variants) and a vip3 ... | 2014 | 24784323 |
| computational studies of the first order kinetic reactions for mononuclear copper(ii) complexes having a hard-soft ns donor ligand. | the chelation behaviour of 4-((e)-2-(1-(thiophen-2-yl)ethylidene)hydrazinyl)-1-(4-methoxyphenyl)-1h-pyrrole-3-carbonitrile (hl) towards cu(ii) ions has been investigated. these cu(ii) complexes are characterized by elemental analyses, molar-solid conductance, esr, ftir and electronic spectral studies. also, the kinetic and thermodynamic parameters (ea, a, δh, δs, δg) for all thermal decomposition steps have been evaluated using coats-redfern and horowitz-metzger methods. furthermore, antimicrobi ... | 2014 | 24785091 |
| synergistic effects of naocl and ultrasound combination on the reduction of escherichia coli and bacillus cereus in raw laver. | the current study investigated the synergistic effects of naocl (50-200 ppm)/ultrasound (37 khz, 380 w for 5-100 min) combination on the reduction of escherichia coli and bacillus cereus in raw laver. the synergistic reductions were not dependent on concentrations of naocl and times of ultrasound. synergistic reduction ranged from 0.1 to 0.5 log10 colony-forming units (cfu)/g and 0.1-1.1 log10 cfu/g, respectively, for e. coli and b. cereus, with the largest synergistic reduction in the combinati ... | 2014 | 24785713 |
| role of structural changes induced in biological membranes by hydrolysable tannins from sumac leaves (rhus typhina l.) in their antihemolytic and antibacterial effects. | in this study, we found that the sumac tannins (rhus typhina l.) exert to a various extent antihemolytic effects and antibacterial activity against bacillus cereus and pseudomonas aeruginosa depending on structural specificity of bacteria and different mechanisms of their toxic action. the sumac tannins exert the most expressed activity against b. cereus. the antihemolytic effect of the sumac tannins seems to be connected to a greater extent with their modifying action on the erythrocyte membran ... | 2014 | 24793101 |
| in vitro evaluation of antimicrobial features of vasopressors. | drugs administered as intravenous infusion may be contaminated during several stages of production or preparation. however studies focusing on antibacterial effects of vasopressor drugs are very rare. this study investigates the in vitro antimicrobial activity of the clinically used forms of vasopressors. | 2014 | 24794449 |
| prevalence, genetic diversity, and host range of tectiviruses among members of the bacillus cereus group. | gil01, bam35, gil16, ap50, and wip1 are tectiviruses preying on the bacillus cereus group. despite the significant contributions of phages in different biological processes, little is known about the dealings taking place between tectiviruses and their gram-positive bacterial hosts. therefore, this work focuses on characterizing the interactions between tectiviruses and the b. cereus group by assessing their occurrence and genetic diversity and evaluating their host range. to study the occurrenc ... | 2014 | 24795369 |
| a multiplex pcr assay for simultaneous detection of escherichia coli o157:h7, bacillus cereus, vibrio parahaemolyticus, salmonella spp., listeria monocytogenes, and staphylococcus aureus in korean ready-to-eat food. | a multiplex polymerase chain reaction (pcr) assay was developed for simultaneous detection of escherichia coli o157:h7, bacillus cereus, vibrio parahaemolyticus, salmonella spp., listeria monocytogenes, and staphylococcus aureus in various korean ready-to-eat foods. the six specific primer pairs for multiplex pcr were selected based on the o157 antigen (rfbe) gene of e. coli o157:h7, the dna gyrase subunit b (gyrb) gene of b. cereus, the toxin regulatory protein (toxr) gene of v. parahaemolyticu ... | 2014 | 24796416 |
| large-scale purification, characterization, and spore outgrowth inhibitory effect of thurincin h, a bacteriocin produced by bacillus thuringiensis sf361. | large-scale purification of the highly hydrophobic bacteriocin thurincin h was accomplished via a novel and simple two-step method: ammonia sulfate precipitation and c18 solid-phase extraction. the inhibition spectrum and stability of thurincin h as well as its antagonistic activity against bacillus cereus f4552 spores were further characterized. in the purification method, secreted proteins contained in the supernatant of a 40 h incubated culture of b. thuringiensis sf361 were precipitated by 6 ... | 2014 | 24798125 |
| the combined effect of pasteurization intensity, water activity, ph and incubation temperature on the survival and outgrowth of spores of bacillus cereus and bacillus pumilus in artificial media and food products. | the objective of the study was to evaluate the combined effects of pasteurization intensity (no heat treatment and 10 min at 70, 80 and 90 °c), water activity (aw) (0.960-0.990), ph (5.5-7.0) and storage temperature (7 and 10 °c) on the survival and outgrowth of psychrotolerant spores of bacillus cereus ff119b and bacillus pumilus ff128a. the experiments were performed in both artificial media and a validation was performed on real food products (cream, béchamel sauce and mixed vegetable soup). ... | 2014 | 24801270 |
| butyric acid released during milk lipolysis triggers biofilm formation of bacillus species. | bacillus species form biofilms within milking pipelines and on surfaces of equipment in the dairy industry which represent a continuous hygiene problem and can lead to serious economic losses due to food spoilage and equipment impairment. although much is known about the mechanism by which the model organism bacillus subtilis forms biofilms in laboratory mediums in vitro, little is known of how these biofilms are formed in natural environments such as milk. besides, little is known of the signal ... | 2014 | 24801271 |
| studies on antimicrobial and immunomodulatory effects of hot aqueous extract of acacia nilotica l. leaves against common veterinary pathogens. | acacia nilotica is a plant species that is almost ubiquitously found in different parts of the world. various preparations of it have been advocated in folk medicine for the treatment of tuberculosis, leprosy, smallpox, dysentery, cough, ophthalmia, toothache, skin cancer as astringent, antispasmodic, and aphrodisiac since immemorial times. the present study investigates the antibacterial, antifungal, antiviral, and immunomodulatory potential of hot aqueous extract (hae) of acacia nilotica leave ... | 2014 | 24804150 |
| potential application in mercury bioremediation of a marine sponge-isolated bacillus cereus strain pj1. | sponges are sessile marine invertebrates that can live for many years in the same location, and therefore, they have the capability to accumulate anthropogenic pollutants such as metals over a long period. almost all marine sponges harbor a large number of microorganisms within their tissues. the bacillus cereus strain pj1 was isolated from a marine sponge, polymastia janeirensis, and was found to be resistant to 100 μm hgcl(2) and to 10 μm methylmercury (mehg). pj1 was also highly resistant to ... | 2014 | 24807626 |
| electrochemical detection of pseudomonas aeruginosa in human fluid samples via pyocyanin. | the ability to quickly detect the presence of pathogenic bacteria in patient samples is of the outmost importance to expedient patient care. here we report the direct, selective, and sensitive detection of the opportunistic pathogen pseudomonas aeruginosa, spiked in human whole blood with sodium heparin, urine, sputum, and bronchial lavage samples using unmodified, disposable carbon electrode sensors that detect the presence of pyocyanin, a virulence factor that is unique to this species. square ... | 2014 | 24813917 |
| characterization of the cell surface properties of drinking water pathogens by microbial adhesion to hydrocarbon and electrophoretic mobility measurements. | the surface characteristics of microbial cells directly influence their mobility and behavior within aqueous environments. the cell surface hydrophobicity (csh) and electrophoretic mobility (epm) of microbial cells impact a number of interactions and processes including aggregation, adhesion to surfaces, and stability of the cells within the aqueous environments. these cell characteristics are unique to the bacterial species and are a reflection of the large diversity of surface structures, prot ... | 2014 | 24815929 |
| the self-assembly of a cyclic lipopeptides mixture secreted by a b. megaterium strain and its implications on activity against a sensitive bacillus species. | cyclic lipopeptides are produced by a soil bacillus megaterium strain and several other bacillus species. in this work, they are detected both in the bacillus intact cells and the cells culture medium by maldi-tof mass spectrometry. the cyclic lipopeptides self-assemble in water media producing negatively charged and large aggregates (300-800 nm of mean hydrodynamic radius) as evaluated by dynamic light scattering and zeta-potential analysis. the aggregate size depends on ph and ionic strength. ... | 2014 | 24816927 |
| bovicin hj50-like lantibiotics, a novel subgroup of lantibiotics featured by an indispensable disulfide bridge. | lantibiotics are ribosomally-synthesized and posttranslationally modified peptides with potent antimicrobial activities. discovery of novel lantibiotics has been greatly accelerated with the soaring release of genomic information of microorganisms. as a unique class ii lantibiotic, bovicin hj50 is produced by streptococcus bovis hj50 and contains one rare disulfide bridge. by using its precursor bova as a drive sequence, 16 bova-like peptides were revealed in a wide variety of species. from them ... | 2014 | 24821187 |
| antibacterial activity of momordica charantia (curcubitaceae) extracts and fractions. | momordica charantia l. belongs to the family curcubitaceae and it is very common in many brazilian regions. the plant is a liana with flowers and yellow fruits that present red seeds when are ripe. popularly known as "melão-de-sãocaetano", "melão amargo" or "cabaço-amargo", it possesses many uses: antidiabetic, antihelmintic, antmicrobial, anticancerigenous and antioxidant. the phytochemical prospection of the fresh and dried leaves extracts showed the presence of different classes of secondary ... | 2010 | 24826002 |
| synthesis, characterization, antimicrobial activity and carbonic anhydrase enzyme inhibitor effects of salicilaldehyde-n-methyl p-toluenesulfonylhydrazone and its palladium(ii), cobalt(ii) complexes. | we report the synthesis of the ligand, salicilaldehyde-n-methyl p-toluenesulfonylhydrazone (salptsmh) derived from p-toluenesulfonicacid-1-methylhydrazide (ptsmh) and its pd(ii) and co(ii) metal complexes were synthesized for the first time. the structure of the ligand and their complexes were investigated using elemental analysis, magnetic susceptibility, molar conductance and spectral (ir, nmr and lc-ms) measurements. salptsmh has also been characterized by single crystal x-ray diffraction. (1 ... | 2014 | 24835932 |
| investigating the potential of under-utilised plants from the asteraceae family as a source of natural antimicrobial and antioxidant extracts. | antimicrobial properties of ethanol and water extracts from eight asteraceae species were investigated against three gram positive (staphylococcus aureus, mrsa and bacillus cereus) and two gram negative (escherichia coli and salmonella typhimurium) bacterial strains. ethanol extracts from centaurea scabiosa, arctium minus, taraxacum officinale, centaurea nigra and cirsium palustre demonstrated antimicrobial activity against strains of s. aureus, mrsa and b. cereus (mic=187.5-365μg/ml). ethanol e ... | 2014 | 24837924 |
| [evaluation of endoscopy assisted vitrectomy for the treatment of severe traumatic eyes with no light perception]. | to evaluate the effect of endoscopy assisted pars plana vitrectomy for severe ocular trauma with no light perception. | 2014 | 24841815 |
| effect of heavy metals on growth response and antioxidant defense protection in bacillus cereus. | bacterial cells in aerobic environment generate reactive oxygen species which may lead to oxidative stress, induced by a wide range of environmental factors including heavy metals. in the present context an attempt has been made to determine the toxic impact of cadmium and copper on growth performance, oxidative stress, and relative level of antioxidant protection in bacillus cereus. outcome of this study suggests that both the metal ions depleted the growth rate in this organism with respect to ... | 2014 | 24852506 |
| ovotransferrin plays a major role in the strong bactericidal effect of egg white against the bacillus cereus group. | bacillus cereus group bacteria are opportunistically pathogenic spore-forming microorganisms well known in the sector of pasteurized food products because of their involvement in spoilage events. in the sector of egg product processing, these bacteria may lead to important economic losses. it seemed then relevant to study their behavior in egg white, a widely used egg product usually recognized as developing different levels of antimicrobial activities depending on the environmental conditions. ... | 2014 | 24853518 |
| cyclic lipodepsipeptides produced by pseudomonas spp. naturally present in raw milk induce inhibitory effects on microbiological inhibitor assays for antibiotic residue screening. | two pseudomonas strains, identified as closely related to pseudomonas tolaasii, were isolated from milk of a farm with frequent false-positive delvotest results for screening putative antibiotic residues in raw milk executed as part of the regulatory quality programme. growth at 5 to 7°c of these isolates in milk resulted in high lipolysis and the production of bacterial inhibitors. the two main bacterial inhibitors have a molecular weight of 1168.7 and 1140.7 da respectively, are heat-tolerant ... | 2014 | 24853676 |
| phytochemical investigations of lonchocarpus bark extracts from monteverde, costa rica. | the acetone bark extracts of three species of lonchocarpus from monteverde, costa rica, l. atropurpureus, l. oliganthus, and l. monteviridis, were screened for antibacterial, cytotoxic, and antioxidant activities. l. orotinus extract was antibacterial against bacillus cereus (mic = 39 microg/ml), while l. monteviridis exhibited the most antioxidant activity. none of the lonchocarpus extracts showed cytotoxic activity against mcf-7 cells. fatty acids and atraric acid were isolated and purified fr ... | 2014 | 24868870 |
| draft genome sequence of bacillus cereus strain bcfl2013, a clinical isolate similar to g9241. | bacillus cereus strains, such as g9241, causing anthrax-like illnesses have recently been discovered. we report the genome sequence of a clinical strain, b. cereus bcfl2013, which is similar to g9241, recovered from a patient in florida. | 2014 | 24874674 |
| genome sequence of bacillus cereus strain a1, an efficient starch-utilizing producer of hydrogen. | bacillus cereus strain a1 is a newly isolated hydrogen producer capable of utilizing bioresources and biowaste, such as starch and starch wastewater. here, we present a 5.67-mb assembly of the genome sequence of strain a1, which may provide insights into the molecular mechanism of hydrogen production from bioresources and biowaste. | 2014 | 24874679 |
| microbial based assay for specific detection of β-lactam group of antibiotics in milk. | the spore forming bacillus cereus (66) was screened for the induction of β-lactamase in presence of an inducer using iodometric assay. a significant induction in marker enzyme was observed in b. cereus 66 at maximum residual limit (mrl) of penicillin, ampicillin, cloxacillin, amoxicillin, cefalexin, and cephazolin belonging to β-lactam group of antibiotics. a microbial based assay, where enzyme induction was optimized at ph 7.0, temperature 30°c, and whey powder (0.25%) after 4 h of incubation. ... | 2014 | 24876650 |
| biosynthesis of silver nanoparticles using acacia leucophloea extract and their antibacterial activity. | the immense potential of nanobiotechnology makes it an intensely researched field in modern medicine. green nanomaterial synthesis techniques for medicinal applications are desired because of their biocompatibility and lack of toxic byproducts. we report the toxic byproducts free phytosynthesis of stable silver nanoparticles (agnps) using the bark extract of the traditional medicinal plant acacia leucophloea (fabaceae). visual observation, ultraviolet-visible spectroscopy, and transmission elect ... | 2014 | 24876776 |
| bactericidal thurincin h causes unique morphological changes in bacillus cereus f4552 without affecting membrane permeability. | thurincin h is an antilisterial bacteriocin produced by bacillus thuringiensis sf361. it exhibits inhibitory activity against a wide range of gram-positive foodborne pathogens and spoilage bacteria including listeria monocytogenes, b. cereus, and b. subtilis. this hydrophobic, anionic bacteriocin folds into a hairpin structure maintained by four pairs of unique sulfur to α-carbon thioether bonds. as its hydrophobicity and structure are quite different from most archived bacteriocins, this study ... | 2014 | 24891232 |
| emetic bacillus cereus are more volatile than thought: recent foodborne outbreaks and prevalence studies in bavaria (2007-2013). | several bacillus cereus strains possess the genetic fittings to produce two different types of toxins, the heat-stable cereulide or different heat-labile proteins with enterotoxigenic potential. unlike the diarrheal toxins, cereulide is (pre-)formed in food and can cause foodborne intoxications shortly after ingestion of contaminated food. based on the widely self-limiting character of cereulide intoxications and rarely performed differential diagnostic in routine laboratories, the real incidenc ... | 2014 | 24895578 |
| commercial herbal slimming products: concern for the presence of heavy metals and bacteria. | the increment of rate in obesity, the phenomenon of fat phobia as well as the increased use of herbal medicine had lead to the emergence of herbal slimming products. however, numerous bacteria and heavy metal contaminations are often found in herbal products due to irregular handling practices. ten different brands of products (labeled as a-j) were investigated. seven heavy metals content such as as, cd, pb, co, cr, cu and zn were analyzed using inductively coupled plasma-mass spectrometry (icp- ... | 2014 | 24897789 |
| the genetic diversity of cereulide biosynthesis gene cluster indicates a composite transposon tnces in emetic bacillus weihenstephanensis. | cereulide is a cyclic dodecadepsipeptide ionophore, produced via non-ribosomal peptide synthetases (nrps), which in rare cases can lead to human death. early studies had shown that emetic toxin formation belongs to a homogeneous group of bacillus cereus sensu stricto and the genetic determinants of cereulide (a 24-kb gene cluster of ceshptabcd) are located on a 270-kb plasmid related to the bacillus anthracis virulence plasmid pxo1. | 2014 | 24906385 |
| radiation-treated ready-to-eat (rte) chicken breast adobo for immuno-compromised patients. | usually in hospitals low-bacterial diets are served to immuno-compromised patients (icps). however, low-bacterial diets still pose a high risk of microbial infections and limit the food selection of the patients. thus, pathogen-free dishes must be made available. this study presents the development of pathogen-free ready-to-eat (rte) filipino ethnic food chicken breast adobo, sterilized by exposure to high-dose gamma rays (25 kgy) in combination with conventional treatments. frozen vacuum-packed ... | 2014 | 24912709 |
| comparative analysis of quantitative reverse transcription real-time pcr and commercial enzyme imunoassays for detection of enterotoxigenic bacillus thuringiensis isolates. | entomopathogenic bacillus thuringiensis is closely related to bacillus cereus, a human pathogen known to cause emesis and diarrhea. standard detection methods do not distinguish these bacilli. hemolysin bl (hbl) and non-hemolytic enterotoxin (nhe) genes that encode, respectively, hbl and nhe enterotoxins, are known to be harbored in both bacterial species, suggesting that differentiation of these bacilli is clinically and epidemiologically relevant. in this study the reliability of quantitative ... | 2014 | 24913432 |
| eremophilane-type sesquiterpenoids with diverse skeletons from ligularia sagitta. | five new highly oxygenated eremophilane-type sesquiterpenoids, possessing c19 (1 and 2), c15 (3 and 4), and c14 (8) skeletons, along with eight known eremophilenolides were obtained from the aerial parts of ligularia sagitta. the absolute configuration of 1 was assigned by x-ray diffraction analysis and that of 3 by ecd spectroscopy. compounds 1-10 were evaluated for their antibacterial activities against staphyloccocus aureus, bacillus subtilis, escherichia coli, bacillus cereus, and erwinia ca ... | 2014 | 24913558 |
| cloning, expression, purification, crystallization and preliminary x-ray diffraction analysis of a ferredoxin/flavodoxin-nadp(h) oxidoreductase (bc0385) from bacillus cereus. | ferredoxin/flavodoxin-nadp(h) oxidoreductases (fnrs) are key enzymes involved in catalysing electron transfer between ferredoxins/flavodoxins and nad(p)h/nad(p)+. in bacillus cereus there are three genes that may encode fnrs, and the bc0385 fnr has been cloned, overexpressed, purified and successfully crystallized in its nadph/nadp+-free form. diffraction data have been collected to 2.5 å resolution from crystals belonging to the orthorhombic space group p2₁2₁2, with unit-cell parameters a=57.2, ... | 2014 | 24915092 |
| complete genome sequence of bacillus cereus sensu lato bacteriophage bcp1. | bacillus cereus sensu lato organisms are an ecologically diverse group that includes etiologic agents of food poisoning, periodontal disease, and anthrax. the recently identified bcp1 bacteriophage infects b. cereus sensu lato and is being developed as a therapeutic decontamination agent and diagnostic countermeasure. we announce the complete genome sequence of bcp1. | 2014 | 24926042 |
| influence of acetylation degree and molecular weight of homogeneous chitosans on antibacterial and antifungal activities. | the results given in the literature are conflicting when considering the relationship between antimicrobial activity and chitosan characteristics. to be able to clarify, we prepared fifteen homogeneous chitosans with different acetylation degrees (da) and molecular weights (mw) by reacetylation of a fully deacetylated chitin under homogeneous conditions. they were tested at different ph values for their antimicrobial activities against four gram-negative bacteria (escherichia coli, pseudomonas a ... | 2014 | 24929684 |
| evaluation of indirect impedance for measuring microbial growth in complex food matrices. | the suitability of indirect impedance to accurately measure microbial growth in real food matrices was investigated. a variety of semi-solid and liquid food products were inoculated with bacillus cereus, listeria monocytogenes, staphylococcus aureus, lactobacillus plantarum, pseudomonas aeruginosa, escherichia coli, salmonella enteriditis, candida tropicalis or zygosaccharomyces rouxii and co2 production was monitored using a conductimetric (don whitely r.a.b.i.t.) system. the majority (80%) of ... | 2014 | 24929710 |
| bacillus cereus and bacillus thuringiensis spores in korean rice: prevalence and toxin production as affected by production area and degree of milling. | we determined the prevalence of and toxin production by bacillus cereus and bacillus thuringiensis in korean rice as affected by production area and degree of milling. rough rice was collected from 64 farms in 22 agricultural areas and polished to produce brown and white rice. in total, rice samples were broadly contaminated with b. cereus spores, with no effect of production area. the prevalence and counts of b. cereus spores declined as milling progressed. frequencies of hemolysin bl (hbl) pro ... | 2014 | 24929722 |
| absence of oxygen affects the capacity to sporulate and the spore properties of bacillus cereus. | this study was performed to evaluate the effect of anaerobiosis on the formation of bacillus cereus spores and their resulting properties. for this purpose, an appropriate sporulation medium was developed (mods). sporulation of 18 strains from different phylogenetic groups of b. cereus was studied in mods medium in aerobiosis and anaerobiosis. in anaerobiosis, sporulation ability was weaker and more heterogeneous than in aerobiosis. among tested strains, b. cereus ah187 produced the highest leve ... | 2014 | 24929727 |
| development of 23 individual taqman® real-time pcr assays for identifying common foodborne pathogens using a single set of amplification conditions. | most of the acute intestinal diseases are caused by foodborne pathogens with infants and elderly people being at major risk. the aim of this study was to develop a procedure to simultaneously detect 20 foodborne pathogens in complex alimentary matrices such as milk, cheese and meat. the list of targets include, among the others, listeria spp., salmonella spp., shigella spp., escherichia coli spp., campylobacter spp., clostridium spp. and staphylococcus aureus. the accuracy of detection was deter ... | 2014 | 24929880 |
| chemical constituents and antimicrobial properties of the essential oil and ethanol extract from the stem of aglaia odorata lour. | the stem-derived essential oil of aglaia odorata lour. was obtained by hydrodistillation using a clevenger-type system. gas chromatography-mass spectrometry analysis of the oil revealed the identification of 39 compounds, representing 76.4% of the oil; germacrene d (20.3%), α-humulene (17.1%), α-himachalene (12.7%) and β-caryophyllene (10.2%) were the major components. ar-turmerone (1) and eichlerialactone (2) were isolated from the stem oil and ethanolic stem extract of this plant species, resp ... | 2014 | 24934340 |
| toxin production and growth of pathogens subjected to temperature fluctuations simulating consumer handling of cold cuts. | it is crucial for the quality and safety of ready-to-eat (rte) foods to maintain the cold chain from production to consumption. the effect of temperature abuse related to daily meals and elevated refrigerator temperatures on the growth and toxin production of bacillus cereus, bacillus weihenstephanensis and staphylococcus aureus and the growth of listeria monocytogenes and yersinia enterocolitica was studied. a case study with temperature loggings in the domestic environment during easter and ch ... | 2014 | 24935689 |
| comparison of procedures for the extraction of supernatants and cytotoxicity tests in vero cells, applied to assess the toxigenic potential of bacillus spp. and lactobacillus spp., intended for use as probiotic strains. | interest in using bacillus strains as probiotic components of animal feeds has grown in recent years. however, some of these strains, especially those taxonomically related to the bacillus cereus group, may have enterotoxigenic activity. assessment of their toxigenic potential by well-established and robust protocols is required before authorizing their use in animal nutrition. three methods of extraction and concentration of supernatants of bacillus and lactobacillus strains (methanol extractio ... | 2014 | 24938520 |
| synthesis, antimicrobial and cytotoxic activities, and structure-activity relationships of gypsogenin derivatives against human cancer cells. | a series of gypsogenin (1) derivatives (1a-i) was synthesized in good yields, and the derivatives' structures were established using uv, ir, (1)h nmr, (13)c nmr, and lcms spectroscopic data. among the tested compounds, 1a, 1b, 1d, 1e, and gypsogenin (1) showed antimicrobial activities against bacillus subtilis and bacillus thrungiensis, with inhibition zones of 10-14 mm. in addition, compounds 1b, 1d, and 1e showed antimicrobial activities against bacillus cereus, with inhibition zones of 9-14 m ... | 2014 | 24941130 |
| expression patterns of chitinase and chitosanase produced from bacillus cereus in suppression of phytopathogen. | bacillus cereus mp-310 was incubated on various culture media substrates as lb, colloidal chitin, chitosan powder, and chitosan beads to investigate the concurrent expression patterns of chitinase and chitosanase isozymes by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (sds-page). chitinase activity increased rapidly with a maximum level after 6 days of incubation in cm-chitin medium. major bands of chitinase isozymes were strongly expressed on sds-page in lb medium (four bands) and ... | 2014 | 24942773 |
| antibacterial, antiviral, and antifungal properties of wines and winery byproducts in relation to their flavonoid content. | grapes produce organic compounds that may be involved in the defense of the plants against invading phytopathogens. these metabolites include numerous phenolic compounds that are also active against human pathogens. grapes are used to produce a variety of wines, grape juices, and raisins. grape pomace, seeds, and skins, the remains of the grapes that are a byproduct of winemaking, also contain numerous bioactive compounds that differ from those found in grapes and wines. this overview surveys an ... | 2014 | 24945318 |
| bacillus anthracis-like bacteria and other b. cereus group members in a microbial community within the international space station: a challenge for rapid and easy molecular detection of virulent b. anthracis. | for some microbial species, such as bacillus anthracis, the etiologic agent of the disease anthrax, correct detection and identification by molecular methods can be problematic. the detection of virulent b. anthracis is challenging due to multiple virulence markers that need to be present in order for b. anthracis to be virulent and its close relationship to bacillus cereus and other members of the b. cereus group. this is especially the case in environments where build-up of bacillus spores can ... | 2014 | 24945323 |
| production of polypeptide antibiotic from streptomyces parvulus and its antibacterial activity. | a highly potent secondary metabolite producing actinomycetes strain is isolated from marine soil sediments of visakhapatnam sea coast, bay of bengal. over all ten strains are isolated from the collected soil sediments. among the ten actinomycetes strains the broad spectrum strain rspsn2 was selected for molecular characterization, antibiotic production and its purification. the nucleotide sequence of the 1 rrna gene (1261 base pairs) of the most potent strain evidenced a 96% similarity with stre ... | 2014 | 24948949 |
| characterization of a novel manduca sexta beta-1, 3-glucan recognition protein (βgrp3) with multiple functions. | recognition of pathogens by insect pattern recognition receptors is critical to mount effective immune responses. in this study, we reported a new member (βgrp3) of the β-1, 3-glucan recognition protein (βgrp) family from the tobacco hornworm manduca sexta. unlike other members of the m. sexta βgrp family proteins, which contain an n-terminal small glucan binding domain and a c-terminal large glucanase-like domain, βgrp3 is 40-45 residues shorter at the n-terminus and lacks the small glucan bind ... | 2014 | 24952171 |
| [occurrence of bacillus cereus in infants and young children foods in 8 provinces in china]. | to investigate the contamination status of infants and young children foods by bacillus cereus. | 2014 | 24964624 |
| screening of marine bacteria with bacteriocin-like activities and probiotic potential for ornate spiny lobster (panulirus ornatus) juveniles. | bacteriocins are ribosomally synthesized antimicrobial peptides, which have been found in diverse bacterial species of terrestrial origins and some from the sea. new bacteriocins with new characteristics, new origins and new applications are likely still awaiting discovery. the present study screened bacteria isolated from marine animals of interest to the aquaculture industry for antimicrobial and bacteriocin-like activities in order to uncover biodiversity of bacteriocin producers, and explore ... | 2014 | 24969424 |
| a metallo-β-lactamase is responsible for the degradation of ceftiofur by the bovine intestinal bacterium bacillus cereus p41. | ceftiofur is a highly effective veterinary cephalosporin, yet it is rapidly degraded by bacteria in the gut. the goal of this work was to directly determine the mechanism of ceftiofur degradation by the bovine intestinal isolate bacillus cereus p41. b. cereus p41 was isolated from the feces of a cow that had not been treated with cephalosporins, and was found to rapidly degrade ceftiofur in culture. analysis of spent culture media by hplc/uv and hplc/ms revealed one major metabolite of ceftiofur ... | 2014 | 24972871 |
| nitropropenyl benzodioxole, an anti-infective agent with action as a protein tyrosine phosphatase inhibitor. | we report on the activities of a broad spectrum antimicrobial compound,nitropropenyl benzodioxole (npbd) which are of relevance to its potential as an anti-infective drug. these investigations support the proposal that a major mechanism of npbd is action as a tyrosine mimetic, competitively inhibiting bacterial and fungal protein tyrosine phosphatases (ptp). npbd did not affect major anti-bacterial drug targets, namely, atp production, cell wall or cell membrane integrity, or transcription and t ... | 2014 | 24976873 |
| influence of albizia lebbeck saponin and its fractions on in vitro gas production kinetics, rumen methanogenesis, and rumen fermentation characteristics. | the present study was undertaken to investigate the effect of crude seed powder (csp) and gross saponins extract (gse) of seeds of albizia lebbeck on antimicrobial activity by taking two gram-positive (staphylococcus aureus and bacillus cereus), two gram-negative (escherichia coli and salmonella typhi) bacteria, and two fungi species (aspergillus niger and candida butyric) were taken at 25, 50, 100, 250, and 500 µg levels using agar well diffusion method. zone of inhibition was increased with in ... | 2014 | 24977047 |
| crystalliferous bacillus cereus group bacteria from a maryland hardwood forest are dominated by psychrotolerant strains. | crystal-forming bacteria of the bacillus cereus group were isolated from soil samples collected at different elevations within a mixed hardwood forest in central maryland, and their phylogenetic relationships determined by multilocus sequence analysis. the vast majority of isolates obtained were associated with two phylogenetic groups known to be psychrotolerant, with very few isolates representing phylogenetic groups more typically associated with bacillus thuringiensis. isolates from the psych ... | 2014 | 24985699 |
| biosynthesis of silver nanoparticles using lingonberry and cranberry juices and their antimicrobial activity. | in this study lingonberry and cranberry juices were used for silver nanoparticle synthesis. the berry juices were characterized by total phenolics, total anthocyanins and benzoic acid content, respectively 1.9-2.7mg/ml, 55.2-83.4mg/l and 590.8-889.2mg/l. the synthesis of silver nanoparticles was performed at room temperature assisting in solutions irradiated by ultraviolet for 30min. ultraviolet-visible (uv-vis) spectroscopy and microscopy confirmed the formation of nanoparticles as well as the ... | 2014 | 24988412 |
| unsaturated fatty acid, cis-2-decenoic acid, in combination with disinfectants or antibiotics removes pre-established biofilms formed by food-related bacteria. | biofilm formation by food-related bacteria and food-related pathogenesis are significant problems in the food industry. even though much disinfection and mechanical procedure exist for removal of biofilms, they may fail to eliminate pre-established biofilms. cis-2 decenoic acid (cda), an unsaturated fatty acid messenger produced by pseudomonas aeruginosa, is reportedly capable of inducing the dispersion of established biofilms by multiple types of microorganisms. however, whether cda has potenti ... | 2014 | 25000301 |
| behavior of transition state regulator abrb in batch cultures of bacillus thuringiensis. | the transition state regulator abrb is involved in the regulation of various cellular functions such as exponential growth, transition state and sporulation onset, due to its ability to activate, suppress or prevent the inappropriate expression of various genes in bacillus subtilis. in order to understand combined behavior in batch cultures of abrb in bacillus thuringiensis, we cloned and expressed the abrb gene of b. thuringiensis in escherichia coli. the deduced sequence of abrb gene coded for ... | 2014 | 25002359 |
| statistical optimization of fibrinolytic enzyme production using agroresidues by bacillus cereus ind1 and its thrombolytic activity in vitro. | a potent fibrinolytic enzyme-producing bacillus cereus ind1 was isolated from the indian food, rice. solid-state fermentation was carried out using agroresidues for the production of fibrinolytic enzyme. among the substrates, wheat bran supported more enzyme production and has been used for the optimized enzyme production by statistical approach. two-level full-factorial design demonstrated that moisture, supplementation of beef extract, and sodium dihydrogen phosphate have significantly influen ... | 2014 | 25003130 |
| direct evidence of iron uptake by the gram-positive siderophore-shuttle mechanism without iron reduction. | iron is an essential element for all organisms, and microorganisms produce small molecule iron-chelators, siderophores, to efficiently acquire fe(iii). gram-positive bacteria possess lipoprotein siderophore-binding proteins (sbps) on the membrane. some of the sbps bind both apo-siderophores (iron-free) and fe-siderophore (iron-chelated) and only import fe-siderophores. when the sbp initially binds an apo-siderophore, the sbp uses the gram-positive siderophore-shuttle mechanism (the sbps exchange ... | 2014 | 25007174 |
| phages preying on bacillus anthracis, bacillus cereus, and bacillus thuringiensis: past, present and future. | many bacteriophages (phages) have been widely studied due to their major role in virulence evolution of bacterial pathogens. however, less attention has been paid to phages preying on bacteria from the bacillus cereus group and their contribution to the bacterial genetic pool has been disregarded. therefore, this review brings together the main information for the b. cereus group phages, from their discovery to their modern biotechnological applications. a special focus is given to phages infect ... | 2014 | 25010767 |
| bacillus cereus panophthalmitis associated with injection drug use. | we report a case of rapidly progressive vision loss in a young woman with a history of injection drug use. subsequent enucleation of the affected eye was done and bacillus cereus grew on tissue culture. b. cereus is a rare cause of endogenous endophthalmitis due to hematogenous seeding of the vitreous in the setting of injection drug use. | 2014 | 25016038 |
| a new chemically defined medium for the growth and sporulation of bacillus cereus strains in anaerobiosis. | a new chemically defined liquid medium, mods, was developed for the aerobic growth and anaerobic growth and sporulation of bacillus cereus strains. the comparison of sporulation capacity of 18 strains of b. cereus has shown effective growth and spore production in anaerobiosis.. | 2014 | 25019521 |
| antimicrobial activity of ammodaucus leucotrichus fruit oil from algerian sahara. | three fruit oil samples of ammodaucus leucotrichus cosson & durieu from algerian sahara were obtained by hydrodistillation and analyzed by gc(ri), gc-ms and 13c nmr spectroscopy. the main compounds were perillaldehyde (87.0-87.9%) and limonene (7.4-8.2%). the antimicrobial effect of the essential oil was evaluated against bacteria, yeasts and filamentous fungi. high antibacterial activity was observed against escherichia coli, staphylococcus aureus. enterobacter cloaceae, bacillus cereus and sal ... | 2014 | 25026729 |
| enhancement of mechanical properties, microstructure, and antimicrobial activities of zein films cross-linked using succinic anhydride, eugenol, and citric acid. | zein constitutes about half of the endosperm proteins in corn. recently, attempts have been made to utilize zein for food coatings and biodegradable materials, which require better physical properties, using chemical modification of zein. in this study, zein proteins were modified using citric acid, succinic anhydride, and eugenol as natural cross-linking agents in the wet state. the cross-linkers were added either separately or combined in increment concentrations (0.1, 0.2, 0.3, and 0.4%). the ... | 2015 | 25036665 |
| decontamination of a bsl3 laboratory by hydrogen peroxide fumigation using three different surrogates for bacillus anthracis spores. | two independent trials investigated the decontamination of a bsl3 laboratory using vaporous hydrogen peroxide and compared the effect on spores of bacillus cereus, bacillus subtilis and bacillus thuringiensis as surrogates for bacillus anthracis spores, while spores of geobacillus stearothermophilus served as control. | 2014 | 25040253 |
| protein- and dna-based anthrax toxin vaccines confer protection in guinea pigs against inhalational challenge with bacillus cereus g9241. | in the past decade, several bacillus cereus strains have been isolated from otherwise healthy individuals who succumbed to bacterial pneumonia presenting symptoms resembling inhalational anthrax. one strain was indistinguishable from b. cereus g9241, previously cultured from an individual who survived a similar pneumonia-like illness and which was shown to possess a complete set of plasmid-borne anthrax toxin-encoding homologs. the finding that b. cereus g9241 pathogenesis in mice is dependent o ... | 2014 | 25044336 |
| inactivation of bacteria via photosensitization of vitamin k3 by uv-a light. | this study investigated inactivation of bacteria with ultraviolet light a irradiation in combination with vitamin k3 as a photosensitizer. six bacteria including bacillus cereus, pseudomonas aeruginosa, staphylococcus aureus, staphylococcus epidermidis, klebsiella pneumoniae, and escherichia coli suspended in vitamin k3 aqueous solution were exposed to ultraviolet light a. five of six bacteria, with the exception of pseudomonas aeruginosa, were reduced by eight logs with 1600 μm of vitamin k3 an ... | 2014 | 25053393 |
| regulation of cry gene expression in bacillus thuringiensis. | bacillus thuringiensis differs from the closely related bacillus cereus group species by its ability to produce crystalline inclusions. the production of these crystals mainly results from the expression of the cry genes, from the stability of their transcripts and from the synthesis, accumulation and crystallization of large amounts of insecticidal cry proteins. this process normally coincides with sporulation and is regulated by various factors operating at the transcriptional, post-transcript ... | 2014 | 25055802 |
| functional characterization and phylogenetic analysis of acquired and intrinsic macrolide phosphotransferases in the bacillus cereus group. | the bacillus cereus group is composed of gram-positive spore-forming bacteria of clinical and ecological importance. more than 200 b. cereus group isolates have been sequenced. however, there are few reports of b. cereus group antibiotic resistance genes. this study identified two functional classes of macrolide phosphotransferases (mphs) in the b. cereus group. cluster a mphs inactivate 14- and 15-membered macrolides while cluster b mphs inactivate 14-, 15- and 16-membered compounds. the genomi ... | 2015 | 25059531 |
| impact of a probiotic bacillus cereus strain on the jejunal epithelial barrier and on the nkg2d expressing immune cells during the weaning phase of piglets. | in a feeding experiment, the probiotic bacillus cereus var. toyoi was fed to sows and piglets in order to test whether it influences the stress response of enterocytes, thereby causing intestinal immune activation, possibly accompanied by an impairment of the epithelial integrity. the impact of b. cereus on the piglets' intestinal enterocytes (ec) and on the communicating intraepithelial lymphocytes (iel) was investigated during the weaning phase where significant immunological changes might be ... | 2014 | 25063224 |
| new thiophene-1,2,4-triazole-5(3)-ones: highly bioactive thiosemicarbazides, structures of schiff bases and triazole-thiols. | key compound 2-(4-amino-5-oxo-3-(thiophene-2-ylmethyl)-4,5-dihydro-1,2,4-tiazole-1-yl) acetohydrazide (3) was synthesized by reacting hydrazine hydrate with ethyl-2-(4-amino-5-oxo-3-(thiophene-2-ylmethyl)-4,5-dihydro-1,2,4-tiazole-1yl)acetate (2), obtained in basic media from 4-amino-5-(thiophene-2-ylmethyl)-2h-1,2,4-triazole-3(4h)-one (1). compound 3 was converted to thiosemicarbazide derivatives (4a-d) and schiff base derivatives 6a-e and 7a-e. the treatment of compound 4 with naoh gave 4-amin ... | 2014 | 25063946 |
| high antioxidant and dna protection activities of n-acetylglucosamine (glcnac) and chitobiose produced by exolytic chitinase from bacillus cereus ew5. | chitin-degrading bacterial strains were screened and tested for their ability to degrade shrimp-shell waste (ssw). among the potential strains, b. cereus ew5 exhibited the highest chitin-degrading ability compared with other strains and produced 24 mg of reducing sugar per gram of dry ssw after 4 days of incubation. a tlc analysis of ssw biodegradation revealed that the chitosaccharides produced in the culture supernatant were mainly n-acetylglucosamine (glcnac) and chitobiose due to the isolate ... | 2014 | 25077065 |