Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| enzymatic properties of phosphatidylinositol inositolphosphohydrolase from bacillus cereus. substrate dilution in detergent-phospholipid micelles and bilayer vesicles. | 1978 | 207692 | |
| role of exogenous phospholipases in triggering platelet aggregation. | 1978 | 207175 | |
| phospholipid dependence of udp-glucuronyltransferase. | very extensive hydrolysis of phospholipids with pure bacillus cereus phospholipase c at 5 degrees c greatly inhibited the maximum demonstrable rate of glucuronidation of p-nitrophenol by udpglucuronyltransferase in guinea pig liver microsomes. lysophosphatidylcholine restored much of the inhibited activity but non-phospholipid surfactants or hydrolysis of diglycerides failed to reactivate. phospholipid depletion likewise inhibited o-aminophenol glucuronidation and phospholipids restored activity ... | 1978 | 203315 |
| [new findings on various bacteria and their toxins as possible causative agents of food poisoning]. | 1977 | 203102 | |
| effect of hydrolytic enzymes and protein-modifying reagents on gonadotropin receptors in bovine corpus luteum cell membranes. | preincubation of membranes with various concentrations of pronase, trypsin, lipase, phospholipase a from vipera russelli and from crotalus durissus terrificus, phospholipase c from bacillus cereus and from clostridium welchii, acetic anhydride, 2,4-dinitrofluorobenzene and tetranitromethane resulted in a dose-dependent inhibition of 125i-labeled human choriogonadotropin binding. at the submaximal concentrations of enzymes and at both submaximal and maximal concentrations of protein-modifying rea ... | 1978 | 202334 |
| hydrolytic action of phospholipases on bacterial membranes. | substrate specificities of phospholipases c[ec 3.1.4.3] from clostridium novyi, clostridium perfringens, bacillus cereus, and pseudomonas aureofaciens were studied under the same conditions. phospholipases c from clostridium novyi and bacillus cereus show wide substrate specificities while those of clostridium perfringens and pseudomonas aureofaciens show relatively narrow specificities. on the basis of these results, the hydrolytic actions of these phospholipases on membrane lipids of escherich ... | 1977 | 201610 |
| aldolase-like imine formation in the mechanism of action of phosphonoacetaldehyde hydrolase. | phosphonoacetaldehyde hydrolase (ec 3.11.1.1), the bacterial enzyme that catalyses the reaction hco-ch2-po(oh)2+h2o leads to hco-ch3+pi, is inactivated by borohydride if either phosphonoacetaldehyde or acetaldehyde is present. this supports the suggestion that the substrate forms an imine with an amino group of the enzyme. such imine formation would labilize the c-p bond in the same way that aldolase and related enzymes labilize c-c and c-h bonds (scheme 1a). | 1977 | 200222 |
| theta-toxin of clostridium perfringens. i. purification and some properties. | theta-toxin, an oxygen-labile hemolysin produced by clostridium perfringens, was purified 3300 fold from culture filtrate by successive chromatography on deae-sephadex a-50 and sephadex g-150. the purified toxin gave two distinct bands in disc electrophoresis, while the same material, after mild reduction with dithiothreitol, yielded a single band, indicating that the purified theta-toxin contained, as well as a reduced, active form, an oxidized, inactive form of toxin. these two forms of the to ... | 1977 | 199270 |
| bacterial hazards. | 1977 | 197534 | |
| the specificity of s1 nuclease toward rna-dna hybrids as studied using isotopes of phosphorus-32 and phosphorus-33. | hybrids were formed from bacillus cereus dna and ribosomal rna. they were treated with various combination of s1 nuclease and ribonuclease, and the molar ratios of the rna and dna moieties remaining in the treated hybrids were determined using a 32p-33p dual-label technique. it was found that both s1 nuclease and ribonuclease are required to give hybrid with rna and dna in a perfect 1:1 molar ratio. it was noted that the dual-label technique which employs orthophosphate as the sole phosphorus so ... | 1977 | 197495 |
| evidence for distinct guanine nucleotide sites in the regulation of the glucagon receptor and of adenylate cyclase activity. | 1977 | 197077 | |
| [microbial resistance to formaldehyde. i. comparative quantitative studies in some selected species of vegetative bacteria, bacterial spores, fungi, bacteriophages and viruses]. | the resistence of different microorganisms to formaldehyde was determined. as test objects served gram-negative and gram-positive vegetative germs (klebsiella pneumoniae, pseudomonas aeruginosa, salmonella paratyphi-b, staphylococcus aureus, streptococcus faecalis), bacterial spores (bacillus cereus, bacillus pumilus, bacillus stearothermophilus, bacillus subtilis), fungi (aspergillus niger, candida albicans), bacteriophages (escherichia coli phages, t1, t2, t3), and viruses (adenovirus, poliomy ... | 1976 | 190825 |
| gonadotropin receptors in plasma membranes of bovine corpus luteum. i. effect of phospholipases on the binding of 125i-choriogonadotropin by membrane-associated and solubilized receptors. | the ability of bovine corpus luteum plasma membranes to bind 125i-choriogonadotropin has been examined after prior treatment of the membranes with phospholipases a, c, and d. treatment of the purified membranes with low concentrations of phospholipases a and c resulted in the inhibition of the binding of 125i-choriogonadotropin to its receptors, whereas phospholipase d had no effect. receptor activity was decreased by low concentrations of phospholipase a from either bee venom, vipera russelli o ... | 1976 | 187585 |
| the effect of phospholipase c on dna synthesis, morphology and phospholipid content of isolated hela cell nuclei. | isolated hela cell nuclei have been treated with purified phospholipase c (bacillus cereus) and sphingomyelinase (staphylococcus aureus). the phospholipids of untreated nuclei consisted of about 67% phosphatidylcholine, 23% phosphatidylethanolamine, 7% sphingomyelin, 2% phosphatidylserine and 1% phosphatidylinositol. phospholipase c degraded 80-90% of the total phospholipids of the nuclei. such nuclei seemed ultrastructurally intact, and had an average diameter and a protein loss during incubati ... | 1976 | 187233 |
| fine structure of the baccilus thuringiensis spore. | the thin-sectioned spore of bacillus thuringiensis resembles that of bacillus cereus in fine structure. planar inclusions occur between the exosporium and spore coat and are structured differently from the parasporal crystal outside the exosporium. | 1976 | 185959 |
| selective utilization of endogenous unsaturated phosphatidylcholines and diacylglycerols by cholinephosphotransferase of mouse lung microsomes. | in the presence of cmp, cholinephosphotransferase of mouse lung microsomes catalyzes the conversion of endogenous phosphatidylcholines into 1,2-diacyl-sn-glycerols and cdpcholine. 2. in this conversion cholinephosphotransferase shows a distinct preference for those molecular species of phosphatidylcholine which contain an unsaturated fatty acid. the enzyme hardly utilizes endogenous depalmitoylglycerophosphocholine as a substrate. 3. membrane-bound 1,2-diacyl-sn-glycerols were also prepared by t ... | 1976 | 184825 |
| laboratory diagnosis of foodborne diseases. | many bacterial species are responsible for sporadic cases and outbreaks of foodborne intoxication and infection. the foodborne diseases are classified on the basis of the pathogenetic mechanisms involved into four categories: performed toxin, enterotoxin formed in the colonized small intestine, mucosal invasion (enterocolitis) and mucosal invasion with bacteremia. invasive and toxigenic strains of enteropathogenic escherichia coli are discussed. in vivo test systems for the identification of ent ... | 1976 | 184732 |
| biochemical effects in bacillus subtilis after treatment with the mycotoxin patulin. | 1976 | 184606 | |
| [hygienic evaluation of the finding of the causative agents of food poisoning in food products]. | 1975 | 180687 | |
| bacillus cereus food poisoning. | 1976 | 179147 | |
| effect of delayed evisceration on the microbial quality of meat. | the postomortem invasion of muscle and other tissues by bacteria from the intestinal tract was studied with the use of radioactive tracers. the injection of 14c-labeled bacteria or spores into the intestines of guinea pig carcasses within 24 h of death resulted in the rapid spread of 14c throughout carcasses. when live bacteria were injected along with the labeled cells, it was not possible to isolate viable organisms from the body tissues if the living animal had been exposed to the bacteria. i ... | 1976 | 178276 |
| studies on a thermophilic rna polymerase which is active only on poly d(a-t) and poly dadt. | two types of rna polymerases [ec 2.7.7.6], polymerases a and b, exist in thermophilic bacteria, thermus thermophilus hb8. polymerase b is apparently like the core enzyme of polymerase a but is active only when an alternating copolymer of deoxyadenylic and deoxythymidylic acids (poly d(a-t)) or a mixture of homopolymers of deoxyadenylic acid and deoxythymidylic acid (poly dadt) is used as a template. polymerase b was further characterized to elucidate its relation to polymerase a and to determine ... | 1975 | 175054 |
| [change in the activity of the enzymatic systems of bacillus anthracoides spores during germination and under the action of ca hypochlorite]. | the activity of the enzymes of the citric acid cycle, glycolysis, and hexose monophosphate pathway was studied during germination of the spores of bacillus anthracoides and upon their treatment with calcium hypochlorite. no activity of isocitrate dehydrogenase and glucose-6-phosphate dehydrogenase was found in the extracts of the vegetative cells, contrary to the spores and initiated spores. the activity of other enzymes changes but slightly in the course of germination of the spores. treatment ... | 1975 | 173977 |
| bacterial food-poisoning. | 1975 | 173111 | |
| organization of phospholipids in human red cell membranes as detected by the action of various purified phospholipases. | 1. the action of eight purified phospholipases on intact human erythrocytes has been investigated. four enzymes, e.g. phospholipases a2 from pancreas and crotalus adamanteus, phospholipase c from bacillus cereus, and phospholipase d from cabbage produce neither haemolysis nor hydrolysis of phospholipids in intact cells. on the other hand, both phospholipases a2 from bee venom and naja naja cause a non-haemolytic breakdown of more than 50% of the lecithin, while sphingomyelinase c from staphyloco ... | 1975 | 169915 |
| inhibition of clostridium botulinum by strains of clostridium perfringens isolated from soil. | thirty-one soil samples were examined for the presence of organisms capable of inhibiting growth and toxin production of strains of clostridium botulinum type a. such organisms were found in eight samples of soil. inhibiting strains of c. perfringens were found in five samples, of c. sporogenes in three and of bacillus cereus in three. three of the c. perfringens strains produced an inhibitor effective on all 11 strains of c. botulinum type a against which they were tested, seven of eight proteo ... | 1975 | 169734 |
| inhibition of glucose 6-phosphatase by pure and impure c-type phospholipases. reactivation by phospholipid dispersions and protection by serum albumin. | 1. pure or impure c-type phospholipases hydrolysed rat liver microsomal phosphatides in situ at 5 degrees or 37 degrees c. at 5 degrees c mean hydrolysis of total phospholipids was 90% by bacillus cereus and 75% by clostridium perfringens (clostridium welchii) c-type phospholipases. 2. four degrees of inhibition of glucose 6-phosphatase (d-glucose 6-phosphate phosphohydrolase; ec 3.1.3.9) resulted. (a) at 37 degrees c inhibition was virtually complete and apparently irreversible. (b) at 5 degree ... | 1975 | 168886 |
| inactivation of glucose 6-phosphate dehydrogenase during germination and outgrowth of bacillus cereus t endospores. | the specific activity and total activity of glucose 6-phosphate dehydrogenase (ec 1.1.1.49) under conditions of complete cell breakage fall 10-20-fold during a 3h period of spore germination and outgrowth. the spores must germinate (lose refractility), but do not have to undergo outgrowth, for the loss of activity to occur. glucose 6-phosphate dehydrogenase activity from cells as any stage of development is completely stable in extracts at 4 degrees c or 30 degrees c. all of the enzyme activity ... | 1975 | 168884 |
| phospholipase c catalyzed formation of sphinogomyelin--14c from lecithin and n-(-14c)-oleoyl-sphingosine. | commercial preparations of clostreidium perfringens were incubated with phosphatidyl choline and n-1-(-14c) oleoylsphingosine. a radioactive product was formed which cochromatogramed with spingomyelin standard in three different solvent systems. several other phospholipases and phosphatases were unable to catalyze this reaction. neither choline, phosphoryl choline, cytidine diphosphate choline nor p-nitrophenyl phosphoryl choline were acitve donors. sphingomyelin was only slightly active as ... | 1975 | 167259 |
| beta-lactamase (bacillus cereus). | 1975 | 166286 | |
| relationship between the dna content and mesosome number in cells of bacillus. | in cells of bacillus there is evidence that deoxyribonucleic acid forms an association with some membranous structure within the cell, possibly mesosomes. cells of varieties of bacillus cereus and bacillus subtilis were examined to see if any quantitative relationship existed between the numbers of mesosomes and dna content. no direct relationship could be domonstrated. however, cells of bacillus cereus var. alesti a(-) maintained a characteristic and constant dna content and number of mesosomes ... | 1975 | 164998 |
| changes in phosoholipid susceptibility toward phospholipases induced by atp depletion in avian and amphibian erythrocyte membranes. | about half of the sphingomyelin content of fresh and atp-depleted chicken erythrocytes is hydrolysed by sphingomyelinase. removal of spingomyelin exposes the rest of the membrane phospholipids to hydrolysis by phospholipase c only in atp-depleted but not in fresh cells. addition of both sphinogomyelinase and phospholipase c to atp-depleted cells causes about 60-70 percent hydrolysis of the total phospholipids accompanied by extensive (90 percent) hemolysis. the phospholipids of toad erythrocytes ... | 1975 | 164239 |
| a method for the quantitative determination of glycerolipids containing o-alkyl and o-alk-1-enyl moieties. | we have developed a spectrophotometric procedure, based on a combination of established methods, for the quantitative determination of aklyl and alk-1-enyl (plasmalogens) ether-linked glycerolipids. it depends upon the release of alkylglycerols and alk-1-enylglycerols from phospholipids by phosphlipase c (bacillus cereus) followed by saponification or by vitride reduction the phospholipids; aldehydes are subsequently formed and measured colorimetrically after reacting them with a fuchsin reagent ... | 1975 | 164236 |
| asymmetry of influenza virus membrane bilayer demonstrated with phospholipase c. | 1975 | 163976 | |
| [case with the clinical manifestation of anthrax etiologically related to b. cereus]. | 1978 | 152230 | |
| phosphatidylinositol as the endogenous activator of the (na+ + k+)-atpase in microsomes of rabbit kidney. | incubation of rabbit kidney microsomes with pig pancreatic phospholipase a2 produced residual membrane preparations with very low (na+ + k+)-atpase activity. the activity could be restored by recombination with lipid vesicles of negatively-charged glycerophospholipids. vesicles of pure phosphatidylcholine and phosphatidylethanolamine were virtually inactive in this respect, but could reactivate in the presence of cholate. incubation of the microsomes with a combination of phospholipase c (bacill ... | 1978 | 147707 |
| the lipid requirement of the (ca2+ + mg2+)-atpase in the human erythrocyte membrane, as studied by various highly purified phospholipases. | 1. when complete hydrolysis of glycerophosphlipids and sphingomyelin in the outer membrane leaflet is brought about by treatment of intact red blood cells with phospholipase a2 and sphingomyelinase c, the (ca2+ + mg2+)-atpase activity is not affected. 2. complete hydrolysis of sphingomyelin, by treatment of leaky ghosts with spingomyelinase c, does not lead to an inactivation of the (ca2+ + mg2+)-atpase. 3. treatment of ghosts with phospholipase a2 (from either procine pancreas of naja naja veno ... | 1977 | 137746 |
| [microbiological aspects of stored hard-boiled eggs]. | hard-bioled eggs in the shell were without any pretreatment stored in air at 20 degrees c and 4 degrees c. furthermore the keeping quality of varnish-coated eggs stored in air at 20 degrees c and of untreated eggs stored in 100% carbon dioxide at the same temperature was studied. hard-boiled eggs stored at 4 degrees c and varnish-coated eggs stored at 20 degrees c were of excellent bacteriological quality up to 5 weeks. untreated eggs stored in air at 20 degrees c showed high microbiological con ... | 1979 | 121493 |
| some properties of a cell-free cortisol 1,2-dehydrogenating system from bacillus cereus. | 1977 | 121321 | |
| [inhibition of bacillus cereus beta-lactamase by dicloxacillin]. | 1979 | 121024 | |
| [studies to investigate the ecological importance of the mass development of hydrodictyon reticulatum in infiltration basins for drinking water. iii. identification of the active components by the use of spectroscopic methods and gas chromatography (author's transl)]. | antibacterial substances from h. reticulatum, that was harvested from its natural habitat or grown under culture conditions, could be isolated by extraction with ethanol or by steam destillation from cells as well as from culture filtrate. the active substances were tested by gas chromatography, infrared spectroscopy and mass spectrometry and characterized as a fraction of saturated fatty acids. its composition seems to depend on external circumstances or culture conditions, respectively, becaus ... | 1979 | 120652 |
| the growth and form of bacterial colonies. | a simple method is described for measuring the profile of bacterial colonies. profiles were determined for colonies of bacillus cereus, escherichia coli and staphylococcus albus of different ages. in spite of differences in cell morphology, the colony profiles had a common basic structure consisting of steeply rising leading edge connected by a ridge to an interior region where height also rose, though less steeply, to a flat or domed centre. the colony mass increased exponentially through part ... | 1979 | 120410 |
| bacillus cereus wound infections. | 1979 | 119794 | |
| [effect of the amount of the nutrient medium and the action of small concentrations of noxious substances on the heat production in bacterial broth cultures]. | 1979 | 119622 | |
| bacillus cereus septic arthritis following arthrography. | organisms of bacillus species usually are common laboratory contaminants and nonpathogenic in humans. recently, however, it has been suggested that cultures growing common bacillus species may indeed represent significant infections and should not always be disregarded. a 24-year-old man developed bacillus cereus septic arthritis following routine arthrography, which is an example of a serious orthopedic infection that can be caused by this supposedly nonpathogenic organism. | 1979 | 119603 |
| [biosynthesis of leucine in a reductoisomerase non inducible mutant of bacillus cereus t]. | 1979 | 119554 | |
| effects of lysozyme on bacillus cereus 569: rupture of chains of bacteria and enhancement of sensitivity to autolysins. | bacillus cereus 569 is known to be resistant to lysis by lysozyme because of the presence of deacetylated glucosamine residues in its peptidoglycan, and cultures continued to grow even in the presence of lysozyme at 200 microgram ml-1. however, lysozyme caused rupture of the chains of bacteria and promoted the rate of autolysis in a non-growing cell suspension, causing a doubling of the rate of release of radioactively labelled wall material. heat-inactivated cells did not autolyse and were not ... | 1979 | 119028 |
| studies on bacterial cell wall inhibitors. viii. mode of action of a new antibiotic, azureomycin b, in bacillus cereus t. | azureomycin b, a new antibiotic which contains sugar, amino acid and phenol moieties and inhibits gram-positive bacteria, was found to be a specific inhibitor of peptidoglycan synthesis in bacteria. the antibiotic lysed growing cells of bacillus cereus t at a concentration of 10 micrograms/ml but did not affect resting cells. microscopical observation revealed swelling and lysis of the bacterial rods when treated with azureomycin b. the incorporation of [3h]diaminopimelic acid or [14c]glucosamin ... | 1979 | 118956 |
| [enterotoxigenecity of bacillus cerous]. | 1979 | 118505 | |
| anti-riboflavin activity of 8-o-alkyl derivatives of riboflavin in some gram-positive bacteria. | two new 8-o-alkyl derivatives of riboflavin (rf), i.e., 8-methoxy- (mof), and 8-ethoxy-8-demethyl-d-riboflavin (eof), their tetraacetate, and the tetraacetate of 8-hydroxy-8-demethyl-d-riboflavin (hof) were synthesized. the anti-rf activity of mof, eof and hof was estimated from the ratio cr/ci, where ci is the concentration of test flavin added to the culture medium and cr is the minimum concentration of rf needed to restore the growth inhibition. their activity was also compared with that of r ... | 1979 | 118241 |
| dielectric properties of native and decoated spores of bacillus megaterium. | a general model for use in interpreting dielectric data obtained with bacterial endospores is developed and applied to past results for bacillus cereus spores and new results for bacillus megaterium spores. the latter were also subjected to a decoating treatment to yield dormant cells with damaged outer membranes that could be germinated with lysozyme. for both spore types, core ions appeared to be completely immobilized, and decoating of b. megaterium spores did not affect this extreme state of ... | 1979 | 118161 |
| spore survival during batch dry rendering of abattoir waste. | normal batch dry rendering practice does not ensure sterile products, because bacterial spores are protected against thermal denaturation by the high fat-low water content environment which results from drying the materials at temperatures below those required for sterilization. | 1979 | 117753 |
| effect of dyes on the quantitative recovery of yersinia enterocolitica. | a total of 69 dyes were incorporated separately at different concentrations into an agar medium for evaluation of their effects on the quantitative recovery of five serotypes of yersinia enterocolitica. one strain of pseudomonas aeruginosa and one strain of bacillus cereus were included for comparative purposes. certain dyes were evaluated further for their selective properties with five additional serotypes of y. enterocolitica, three strains of p. aeruginosa, and two of engerobacter spp. metan ... | 1979 | 117750 |
| recovery from bacillus cereus sepsis. | a patient with acute leukemia developed two separate episodes of bacillus cereus septicemia during one hospitalization. leukopenia as a consequence of cytotoxic chemotherapy preceded both illnesses. the course of the infections was favorably influenced by the return of adequate numbers of circulating granulocytes and aminoglycoside therapy. only one other compromised host is known to have recovered from this otherwise fatal disease. | 1979 | 117555 |
| the action of bacillus cereus phospholipase c on central-nervous-system myelin in freshly isolated and freeze-dried resuspended forms [proceedings]. | 1979 | 116892 | |
| the bacillus cereus toxin: isolation of permeability factor. | the bacillus cereus protein has been obtained from culture fluid in homogenic form as indicated by sds-disc electrophoresis and immunodiffusion not described before. the protein has a molecular weight of 100000 daltons. purification was accomplished by the following steps: (1) removal of ballast nitrous components with de-32 cellulose at ph 7.2; (2) removal of the proteins from the culture filtrate (deluted four times by water) with de-32 cellulose at ph 8.6; (3) elution by 0.005 m tris-hcl buff ... | 1979 | 116438 |
| cephalosporin-sensitive penicillin-binding proteins of staphylococcus aureus and bacillus subtilis active in the conversion of [14c]penicillin g to [14c]phenylacetylglycine. | breakdown of the covalent complex formed between [14c]penicillin g and higher molecular weight, cephalosporin-sensitive penicillin-binding proteins was studied using mixtures of the purified proteins isolated from membranes of staphylococcus aureus and bacillus subtilis. these penicillin-binding proteins were found to release the bound 14c label in a first order process characterized by half-lives of 10 to 300 min at 37 degrees c. denaturation of the penicilloyl.penicillin-binding proctein compl ... | 1979 | 115876 |
| anomeric configuration of n-acetylglucosaminyl phosphorylundecaprenols formed in bacillus cereus membranes. | the structural difference was studied between two n-acetylglucosaminyl phosphorylundecaprenols formed by incubation of bacillus cereus membranes with udp-n-acetylglucosamine. on the treatment with 50% phenol, the major one of these glycolipids (lipid 1) yielded a saccharide phosphate, while the other (lipid 2) yielded n-acetylglucosamine along with a saccharide phosphate. the saccharide phosphates from lipids 1 and 2 were identified as alpha-n-acetylglucosamine 1-phosphate and its beta-anomer, r ... | 1979 | 115872 |
| polioencephalomalacia in range cattle. | polioencephalomalacia developed in 27 of 225 cattle grazing on 486 hectares of dry, short, grama grass pasture. chemicals in drinking water, toxin from nitrate-utilizing ruminal bacteria, and documented poisonous plants were considered as etiologic agents. attempts to reproduce the disease by injecting mice and dosing sheep with broth filtrate from nitrate-utilizing ruminal bacteria were not successful. mushrooms collected from the pasture and fed to a cow did not reproduce the disease. | 1979 | 115820 |
| bacillus cereus: not a contaminant. | 1979 | 114678 | |
| two gas-gangrene-like infections due to bacillus cereus. | two cases of postoperative gas-gangrene-like infection due to bacillus cereus are reported, drawing attention to the fact that bacillus cereus, a common environmental bacterium, can occasionally give rise to severe post-operative infection. characteristics of the organism related to the epidemiology and pathogenesis of such infections are discussed. | 1979 | 114263 |
| microbiological transformations of nabilone, a synthetic cannabinoid. | a screening program was conducted to find microorganisms that modify the synthetic cannabinoid nabilone. after purification, the products from three cultures were analyzed by spectral methods to determine their chemical structures. an optically active 9s-hydroxy-6ar,10ar-trans cannabinoid was isolated from a culture of an unidentified soil bacterium designated a24007. from bacillus cereus cultures were isolated a 9s,6'-dihydroxy-6ar,10ar-trans cannabinoid, a 9s-hydroxy-6'-keto-6ar,10ar-trans can ... | 1979 | 114111 |
| [cryoresistance during sporulation in bacillus (author's transl)]. | the maximal resistance at -- 20 degrees c is obtained as soon as stage v of sporulation in bacillus cereus and for the spore of the mutant marburg strain of b. subtilis bloked at stage v of sporulation. | 1979 | 114081 |
| how specific is the effect of penicillins on the conformation of penicillinase? an experimental model. | 1979 | 113659 | |
| the effect of transition metal ions on the resistance of bacterial spores to hydrogen peroxide and to heat. | the presence of 10 microm-cu2+ increased the lethal effect of hydrogen peroxide on spores of clostridium bifermentans but not on those of clostridium sporogenes pa 3679, clostridium perfringens, bacillus cereus or bacillus subtilis var. niger. cu2+ at 100 mum also increased the lethal effect of heat on spores of c. bifermentans but not on those of b. sutilis var. niger. the rate and extent of cu2+ uptake by spores of c. bifermentans and b. subtilis var. niger were similar, but examination of uns ... | 1979 | 113488 |
| physiological studies of a temperature-sensitive sporulation mutant of bacillus cereus t. | growth of temperature-sensitive mutant bacillus cereus t js22-c occurred normally at the restrictive temperature (37 degrees c), but sporulation was blocked at stage 0. the production of extracellular and intracellular proteases and of alkaline phosphatase occurred at 37 degrees c, but the expression of a functional tricarboxylic acid cycle did not. at the permissive temperature (26 degrees c), the mutant sporulated at a slightly lower frequency (60%) and at a lower rate than the parent strain. ... | 1979 | 113065 |
| unfolding and refolding of phospholipase c from bacillus cereus in solutions of guanidinium chloride. | 1. protein-fluorescence studies indicated that phospholipase c from bacillus cereus is denatured in solutions of guanidinium chloride. the denaturation was not thermodynamically reversible and followed biphasic kinetics. 2. guanidinium chloride solutions released the structural zn2+ from the enzyme and rendered all histidine residues chemically reactive. in the presence of free zn1+ the enzyme was much more resistant to denaturation. also, the addition for free zn2+ to the denatured enzyme induc ... | 1979 | 113000 |
| [toxins and enzymes of several species of bacillus, especially of the b. cereus-thuringiensis group (author's transl)]. | in the examined strains the production of following toxins or enzymes was determined by bioassay or by semiquantitative and routine diagnostical tests: delta-endotoxin, alpha-exotoxin, beta-exotoxin hemolysin, phospholipase c, proteinase. the production of delta-endotoxin (= a parasporal crystal toxic for several insects) is the only character in that b. thuringiensis differs from b. cereus. other biochemical features as production of so-called alpha-exotoxin (= soluble toxic protein), hemolysin ... | 1979 | 112804 |
| inhibition of germination of bacillus cereus t spores by phenylglyoxal. | phenylgloxal at a concentration of 0.6 mm inhibited germination of bacillus cereus t spores as characterized by a decrease in absorbance, dipicolinic acid and loss in heat resistance in a chemically defined growth and sporulation medium. in a germination medium containing l-alanine and adenosine, phenylglyoxal inhibited decrease in absorbance and affected partial loss of viability. it is postulated that phenylglyoxal interacts with free amino groups of various enzymes or amino compounds present ... | 1979 | 112015 |
| biochemical changes occurring during microcycle sporogenesis of bacillus cereus t. | 1979 | 111675 | |
| [structural changes in spores under high temperature exposure]. | the electron microscopy of ultrathin sections of b. cereus spores showed that no lysis and destructive changes occurred in the main structural components of the spores when heated to 99 degrees c (in distilled water). by the time 99% of the population were destroyed, the spores seemed to preserve the exosporium of the sporoderm, the cortex and the sporoblast intact. even autoclaving at 120 degrees c for 15 min brought about no visible changes in the ultrastructure of the spores, though it killed ... | 1979 | 111441 |
| [pathogenicity of aerobically sporulating microorganisms: bacillus cereus]. | the pathogenicity of the metabolites of b. cereus was determined by bioassays with white mice, chick embryos, rabbits, and kittens. cell-free filtrates of the cultures of several strains of b. cereus were used for application; in the mice the application was done i. v., i. p. and p. o., in the chick embryos via the allantoic sac, in the kittens p. o. and i. p., in the rabbits via tied-up sections of the small intestine by the loop-test method. it was revealed that some strains of b. cereus produ ... | 1979 | 111402 |
| infectious diarrhea. | 1979 | 111270 | |
| [bacteria of current interest. 4. new infections caused by known bacteria-- beta group streptococcus, haemophilus influenzae, aeromonas and bacillus infections]. | 1979 | 110966 | |
| purification of phospholipase c from bacillus cereus by hydrophobic chromatography on palmitoyl cellulose. | phospholipase c (phosphatidylcholine choline-phosphohydrolase, ec 3.1.4.e) from bacillus cereus (iam-1208) was adsorbed to palmitoyl cellulose from a crude enzyme solution at ph 5--9. the adsorption was not influenced by ionic strength up to 2 m nacl. the adsorbed enzyme was eluted almost completely by washing the cellulose with a suitable detergent, such as triton x-100, adekatol so-120, cation dt-205, or sodium deoxycholate. the enzyme was then purified by column chromatography on a palmitoyla ... | 1979 | 110896 |
| bacillus cereus panophthalmitis after intravenous heroin. | two healthy young black men developed panophthalmitis after intravenous heroin injections. bacillus cereus, considered to be a relatively noncommon pathogen for man, was found to be the causative agent as it was recovered from the anterior chamber and viterous cavity of both cases. the ocular findings were unilateral in each case, and neither patient had any sistemic involvement from the bacteremia. the onset of visual symptoms varied from 24 to 36 hours after the last intravenous injection with ... | 1979 | 110208 |
| a hospital food-borne outbreak of diarrhea caused by bacillus cereus: clinical, epidemiologic, and microbiologic studies. | an outbreak of diarrhea involving 28 patients occurred in two wards of a chronic disease hospital. the illness was characterized by abdominal cramps and watery diarrhea without vomiting or fever. an epidemiologic investigation suggested food-borne intoxication and incriminated turkey loaf served at the preceding evening meal as the source of the outbreak. bacillus cereus was isolated both from the stool of all 14 symptomatic patients who were cultured and from turkey loaf. no other enteropathoge ... | 1979 | 109549 |
| catalytic and conformational properties of cross-linked derivatives of penicillinase. | 1979 | 109124 | |
| [change in the constructive metabolism and ultrastructural organization of bacillus cereus cells under the influence of a specific autoregulatory factor]. | it has been found for the first time that an increase in the concentration of a specific autoregulatory factor in the medium is responsible for the hypometabolic state of vegetative cells; no principal cellular biopolymers are synthesized at this state (dna, rna, proteins and phospholipids), and no cellular structures are degraded. when the culture reverses to vegetative growth observed in the same medium, synthesis of the biopolymers is intensified and changes are detected in the ultrastructura ... | 1979 | 108528 |
| [infrared spectra of bacillus cereus cells]. | 1979 | 108522 | |
| [inorganic ion transport in bacteria]. | 1979 | 107670 | |
| severe clinical conditions associated with bacillus cereus and the apparent involvement of exotoxins. | twenty-one cases of infection with bacillus cereus are summarised. the histories supplied showed that at least 15 of these were associated with severe or potentially severe symptoms including two deaths. analysis of the production of exotoxins, including haemolysin and phospholipase, by these strains is given, and the relevance of these metabolites to the severity of the condition is discussed. three incidents of bovine mastitis resulting from b. cereus and involving three deaths are also includ ... | 1979 | 107202 |
| interaction of phenosafranine with nucleic acids and model polyphosphates. iii. heterogeneity in phenosafranine interactions with dna base pairs. | fluorescence and circular dichroism spectral measurements, thermal denaturation studies and binding competition experiments with netropsin and actinomycin d were carried out in systems containing phenosafranine bound to dna's differing in base composition. the investigated properties exhibit a heterogeneity related to the content of a.t and g.c pairs in dna and to the nature of phenosafranine binding modes. at low level of saturation of binding sites (r less than 0.1) phenosafranine does not sho ... | 1979 | 106900 |
| preliminary experimental data on inhibition of beta-lactamase i from b. cereus by cu (++) and zn(++). | 1978 | 106864 | |
| the spectrum of bacillus bacteremias in heroin addicts. | bacillus bacteremias occurred in two heroin addicts. the first patient had one day of fever and chills after intravenous heroin use. persistent cereus bacteremia consistent with endocarditis was documented and responded to four weeks of antibiotic therapy. the second patient had non-cereus bacillus species isolated from blood cultures three times over eight days, each time after renewed heroin use. the patient remained well, and the bacteremias cleared spontaneously. because bacillus species fre ... | 1979 | 106784 |
| [bacillus cereus septicemia (author's transl)]. | 1978 | 106146 | |
| thermal analysis of the spores of bacillus cereus with special reference to heat activation. | the heat activation of bacterial spores was studied by means of differential thermal analysis in the temperature range 30-110 degrees c using the spores of bacillus cereus. the thermogram showed three endothermic peaks at 56, 95, and 103 degrees c with one exothermic peak at 105 degrees c during the heating process. the spore coat separated from the native spores also showed a peak at 56 degrees c on its heating thermogram. the peak at 56 degrees c was reversible for both native spores and the s ... | 1978 | 105794 |
| production and characterization of two hemolysins of bacillus cereus. | bacillus cereus strain b-48 produced two hemolysins with molecular weights of 52,000 (h-i) and 31,000 (h-ii). a mutant was isolated that produced only h-ii but was identical with the wild type in all other respects. we exploited this mutant to produce h-ii for study that was free of contamination by h-i. by manipulation of media composition, we produced h-i in the absence of h-ii. the hemolysins were precipitated differently by ammonium sulfate, and both exhibited the arrhenius effect when heate ... | 1978 | 105792 |
| radiosensitivity of bacteriophages of aerobic spore-forming microorganisms. | under conditions of the direct action of radiation on seven original phages of aerobic spore-forming bacteria and four standard phages of e. coli, it was established that they possessed different sensitivity to gamma radiation and were distributed into four groups. the phages of e. coli of the t series, especially t2 phage, proved the most sensitive. the phages of aerobic spore-forming bacilli were characterized by greater resistance to the action of gamma radiation, which is evidently associate ... | 1978 | 105763 |
| conformational studies on phospholipase c from bacillus cereus. the effect of urea on the enzyme. | 1. when heated in 8 m-urea, phospholipase c(ec 3.1.4.3) from bacillus cereus undergoes conformational transitions depending on the temperatures used. these transitions were studied by examining protein fluorescence, iodide quenching of protein fluorescence, u.v. difference spectroscopy, chemical availability of histidine residues in the enzyme, circular dichroism and catalytic activity. 2. unless simultaneously exposed to elevated temperatures the enzyme appears to be unaffected by 8 m-urea. rem ... | 1978 | 105729 |
| the inhibition of clostridium chauvoei by bacillus cereus metabolites. | 1978 | 105701 | |
| bacillus cereus endogenous panophthalmitis. | a case of severe suppurative endogenous panophthalmitis caused by bacillus cereus resulted from intravenously administered medications. this is the first, to our knowledge, well-documented case of endogenous endophthalmitis associated with this organism. it is recommended that if on gram's stain of the anterior chamber fluid, gram-positive rods are seen, chloramphenicol should be administered in addition to penicillin because of the possibility of b cereus infection. | 1979 | 105693 |
| [b. cereus count in meat and dairy food products]. | studies were carried out to establish the contamination of some meat and dairy food products with b. cereus. a total of 48 heat-treated sausages (32 perishable and 16 durable) and 64 batches of pasteurized milk were sampled. it was found that 25 per cent of investigated sausage samples contained b. cereus. perishables proved to a considerable extent more frequently contaminated (33.3 per cent). the count of b. cereus in such products ranged from 10(1) to 10(3) per g. however, pasteurized milk wa ... | 1978 | 105462 |
| changes in ultraviolet resistance and photoproduct formation as early events in spore germination of bacillus cereus t. | 1978 | 105364 | |
| [information on phase contrast and differential interference contrast figures--a comparative study (author's transl)]. | 1978 | 105312 | |
| deoxyribonucleic acid relatedness between bacillus anthracis, bacillus cereus and bacillus thuringiensis. | 1978 | 105229 | |
| the isolation and cultivation of a single spore using a sterile disposable petri dish and a micromanipulator. | 1978 | 105218 | |
| serious infections from bacillus sp. | serious infections caused by organisms of the genus bacillus developed in seven patients. five drug abusers had either endocarditis or osteomyelitis, one leukemic patient had necrotizing fasciitis, and one patient had a ventriculoatrial shunt infection with recurrent bacteremia. all patients recovered. experience with these cases reemphasizes the importance of not dismissing bacillus organisms as culture contaminants, especially when isolated from blood, body fluids, or closed-space infections. | 1979 | 105158 |
| bacillus cereus endocarditis. | 1979 | 105070 | |
| effects of local anesthetics on bacterial cells. | the membrane effects of chlorpromazine, nupercain, tetracain, and procain were studied using bacillus cereus, b. megaterium, b. subtilis, and streptococcus faecalis, protoplasts from s. faecalis, and isolated membranes from b. subtilis. chlorpromazin, nupercain, and tetracain produced characteristic micromorphological alterations after treatment for 5 to 30 min at ph 7.0 and 20 degrees c; the membrane staining pattern changed from asymmetric to symmetric, complex mesosome-like structures appeare ... | 1979 | 104970 |