Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| identification of the presence and type of biliary microflora by immediate gram stains. | immediate gram stains were performed on gallbladder bile aspirated at the start of an operation for biliary disease in 191 consecutive patients undergoing elective biliary surgery. the results of the gram stains were telephoned to the operating theater within 20 minutes of collection. the over-all accuracy rate of the telephone gram stain reports compared with the subsequent bile cultures was 77 percent. the incidence of false-positive results was 12 percent, and false-negative results were reco ... | 1977 | 66763 |
| hospital outbreak of clostridium perfringens food-poisoning. | an outbreak of clostridium perfringens (c.welchii) food-poisoning affected a third of the patients in a large hospital, and one frail patient died. c.perfringens type a, serotype 1, was isolated from 46 (61 per cent) of 76 patients examined and from food, and a new serotype (61) was isolated from 16. the attack-rate among patients who ate a minced-ham dish was 78 per cent. the cooking and storage of this mince was faulty: cuts of meat were much too large, they were kept at room temperature too l ... | 1977 | 67498 |
| specific inhibition of viral neuraminidases by an inhibitor, neuraminin, produced by streptomyces sp. | 1977 | 67704 | |
| antigenic relationships among thiol-activated cytolysins. | cereolysin, streptolysin o, and perfringolysin o formed precipitin lines that completely fused when reacted with horse antitetanolysin by ouchterlony immunodiffusion and formed precipitin lines that showed either partial or complete fusion when diffused against horse antistreptolysin o or antiperfringolysin o. | 1977 | 68932 |
| an unusual outbreak of food-poisoning associated with meals-on-wheels. | an outbreak of food-poisoning after a meals-on-wheels lunch affected 49 persons, 1 of whom died. bacillus cereus serotype 10 and bacillus licheniformis were isolated in large numbers from many of the patients including the deceased and from the remains of the meal. clostridium perfringens (c. welchii) serotype 68, which was isolated from many of the patients and the deceased but not from the food, may also have been responsible. food kept warm during distribution can produce an ideal environment ... | 1977 | 69207 |
| purification of clostridium toxoids. | a two-step fractionation procedure was applied for purification and concentration of the individual clostridium toxoids. the toxoids were precipitated with hydrochloric acid in the presence of sodium sextametaphosphate, then antigenic fractions were separated from inactive contaminants by sephadex g-75 filtration. specific activity of the preparations thus obtained, as determined by mancini radial immunodiffusion, was 150--565 binding units per mg of protein nitrogen for clostridium perfringens ... | 1977 | 70974 |
| bacteria in necrotising enterocolitis. | 1977 | 71441 | |
| clostridia as intestinal pathogens. | 1977 | 73015 | |
| fluorescent probes of chromosome structure and replication. | procedures employing fluorescent dyes or giemsa stain have been utilized to differentiate methaphase chromosomes into longitudinal segments termed bands. in spite of the immense practical utility of chromosome banding, the chemical basis of banding patterns remains incompletely understood. physical chemical studies have elucidated the modes and specificities of the interaction of fluorescent dyes such as quinacrine, 33258 hoechst, daunomycin, chromomycin a3 and 7-aminoactinomycin d with dna and ... | 1977 | 76502 |
| synergistic bacterial gangrene following abdominal hysterectomy. | a case of synergistic bacterial gangrene occurring after abdominal hysterectomy in a 43-year-old patient is presented. after multiple debridement procedures and porcine grafts, the patient responded satisfactorily and eventually recovered. | 1977 | 187992 |
| bacteriological study of clostridium perfringens from diarroeal cases and controls. | 1977 | 207643 | |
| [distribution of cl. perfringens in preserved food and the lecithinase activity of isolated strains]. | this is a study of 414 different foodstuff types for cl. perfringens presence determination. of the meat products are with the highest contamination - 32 per cent, next ranking seasoning spices ond condiments, and auxiliary materials - 10.9 per cent. in milk, dairy and confectionary products it is isolated in 3.8 per cent of samples, while in tinned foodstuffs - in 1.8 per cent. lecithinase production of the isolated strains in kitt-tarozi bouillon, following 18-20 hour-long cultivation at 37 de ... | 1977 | 208065 |
| [chromatograms of products of pyrolysis in the differentiation of clostridium perfringens a]. | 1977 | 192975 | |
| intraleukocytic spore formation and leukocytic vacuolization during clostridium perfringens septicemia. | the case of a patient with fulminant clostridium perfringens septicemia and intravascular hemolysis is presented. the organisms in the blood stream were in sufficient quantity to be detected on a peripheral blood smear, and some were found to be within leukocytes. in vivo spore formation by c. perfringens is thought to be uncommon; however, in this patient probable spore formation by this organism was observed within peripheral blood leukocytes. the peripheral polymorphonuclear leukocytes from t ... | 1977 | 203181 |
| microbiology of new zealand farmed venison. | 1977 | 203773 | |
| [two outbreaks of "clostridium perfringens" food poisoning: epidemiological remarks (author's transl)]. | two outbreaks of cl. perfringens food poisoning which occurred in florence during 1976 have been described. the first one involved three hundred primary school children; processed re-heated turkey meat was thought to have been the vehicle of infection in the school meal. the clinical symptoms consisted of mild diarrhoea in all cases and the duration of the illness was about 12 hours. the possible part played by food storage temperature, post-cooking periods and food trolleys in the spread of inf ... | 1977 | 204262 |
| effect of freezing on incidence and levels of clostridium perfringens in mechanically deboned chicken meat. | paucity of information about the effect of plant practices on microbiological condition of comminuted chicken meat prompted this investigation. commercially deboned chicken backs and necks were analyzed for levels of aerobic organisms, incidence and levels of clostridium perfringens vegetative cells and spores before and after 4-6 weeks at -23 degrees c. initially vegetative cells were isolated more frequently than spores. frozen storage significantly reduced incidence and levels of vegetative c ... | 1977 | 205848 |
| [clostridium perfringens food poisoning]. | 1977 | 209737 | |
| [infections by anaerobic bacteria]. | 1977 | 211568 | |
| characterization and transferability of clostridium perfringens plasmids. | 1977 | 220651 | |
| vaccination of pregnant sows with clostridium perfringens type c toxoid. | 1977 | 194385 | |
| [early stages of the infectious process]. | 1977 | 194438 | |
| [effect of alcoholic intoxication on the body's natural resistance to exposure to infectious and toxic agents]. | the influence of alcoholic intoxication on the resistance of albino mice to bacterial toxins and staphylococcus cultures was investigated. five-day administration of 40% ethyl alcohol to the animals was accompanied by a significant increase of their resistance to the intoxication caused by c1. perfringens toxins and staphylococcus. thirty-day alcoholic intoxication promoted a marked reduction of albino mice resistance to the both toxins used and the staphylococcus cultures. | 1977 | 194439 |
| [toxicity and sporulation of cl. perfringens strains type a]. | 1977 | 202818 | |
| [effect of various antibiotics, disinfectants and uv light on the viability of vegetative cells and spores of cl. perfringens type a]. | 1977 | 202819 | |
| [new findings on various bacteria and their toxins as possible causative agents of food poisoning]. | 1977 | 203102 | |
| dissimilatory nitrate reduction in clostridium tertium. | fermentation balance studies were carried out on clostridium tertium grown with and without nitrate in the medium. nitrate reduction increased the efficiency of energy produced from glucose by permitting the utilization of additional sites of substrate level phosphorylation. the effect was even more dramatic in c. tertium than in c. perfringens, with increased cell yields of about 30% being observed in the former compared with 20% in the latter. unlike c. perfringens, c. tertium responded to the ... | 1977 | 203129 |
| media supplemented with nalidixic acid for the isolation of gram negative anaerobic bacteria. | the minimum inhibitory concentrations (mic) of nalidixic acid were determined for thirty-four strains of clostridium sp. by an agar dilution technique. the mic range of clostridium perfringens ran from 0.03 microgram/ml to 64 microgram/ml, according to a bimodal distribution. one half of the strains was inhibited by 0.25 microgram/ml. 64 microgram/ml was able to inhibit all the strains tested. the author suggests a systematic utilization of media with and without 40 microgram/ml nalidixic acid. ... | 1977 | 203144 |
| [presence and pathogenic significance of clostridium perfringens in the calf. 2. infection studies, ligation test and testing for enterotoxin formation for clarification of the pathogenic significance of clostridium perfringens type a]. | 1977 | 193319 | |
| [use of the passive hemagglutination test for the purpose of determining antibody levels following animal immunization with cl. perfringens toxoid]. | data are presented on the study of possibilities of the application of the passive hemagglutination test for titration of the blood sera of mice, guinea pigs and rabbits immunized with cl. perfringens toxoid. a diagnostic agent obtained by the sensitization of formalin- and tannin-treated sheep erythrocytes with the serologically pure toxoid, and homologous sera (as standard) were used in this test. a high immune response of balb/c and c3h mice to the cl. perfringens toxoid permits to suggest in ... | 1977 | 193324 |
| susceptibility of clostridium perfringens isolated from human infections to twenty antibiotics. | the proper choice of antibiotic for clostridium perfringens infections in patients allergic to penicillin is not clear; the usual recommendations and recent in vitro studies disagree. we tested the susceptibility of 57 strains of c. perfringens to eight penicillins, seven cephalosporins, two tetracyclines, clindamycin, chloramphenicol, and rifampin by the agar dilution method. all strains were inhibited by (per milliliter) 4 mug or less of any of the penicillins, chloramphenicol, or clindamycin ... | 1977 | 193441 |
| effects of phospholipases on selected renal enzymes: a histochemical study. | 1977 | 193724 | |
| serotypes, sporulation and enteropathogenicity of clostridium perfringens of faecal origin isolated in delhi area. | 1977 | 193784 | |
| outbreaks of food poisoning attributed to lecithinase-negative clostridium welchii. | 1977 | 193875 | |
| specificity of dna basic polypeptide interactions. ii+ influence of aromatic amino acid residues investigated with agarose bound lysine copolypeptides. | binding affinities towards dna and base pair specificities of lysine copolymers, containing different amounts of phe, tyr or trp residues, were estimated using a previously described chromatographic method. incorporation of few aromatic residues into polylysine causes a decrease in the binding affinity, however, further raising the aromatic residue - lysine ratio results in a continous increase of affinity, which is most pronounced with the tyr copolymers and not observed with polymers containin ... | 1977 | 194223 |
| [loss of myolysis and decrease of toxicity in clostridium perfringens type a mutants: in vitro study of a relationship among hemolysins, growth, and metabolism]. | 1977 | 200986 | |
| the in vitro and in vivo activity of taurolin against anaerobic pathogenic organisms. | an antibacterial agent, taurolin, formed by the combination of 2 molecules of taurine with 3 molecules of formaldehyde has been tested against anaerobes in vitro and in vivo. in vitro, taurolin is highly active against bacteroides species and anaerobic streptococci as measured by the minimum inhibitory concentration. in vivo, small dosages of taurolin given intraperitoneally increase the mortality in mice with bacteroides peritonitis. however, by increasing the dosage of taurolin, survival is pr ... | 1977 | 201040 |
| [isolation of clostridium perfringens from the muscles and internal organs of animals]. | 1977 | 201077 | |
| [activity of anatoxins against infectious enterotoxemia of sheep, prepared with different adjuvants]. | 1977 | 201079 | |
| [prevention of anaerobic gastrotoxemia of lambs]. | 1977 | 201080 | |
| vaccination of cattle and sheep with a combined clostridium perfringens types c and d toxoid. | cattle and sheep (30 each) were vaccinated with a combined clostridium perfringens type c and c perfringens type d toxoid. vaccination and blood sample collections were made every 2 weeks over a period of 8 weeks. increases in antitoxin titers occurred after the 2nd administration of the 2.0-ml combined product. highest titers were recorded when the 2nd vaccinal dose was given 2 weeks after the first. this confirms reports that response to clostridial antigens is greater when the 2nd immunizing ... | 1977 | 201186 |
| [microcirculatory changes following the combined action of the toxin of c1. perfringens type a and biological products of c1. butyricum]. | 1977 | 201314 | |
| purification of beta-toxin from clostridium perfringens type c. | beta-toxin was purified about 340-fold from culture supernatant fluid of clostridium perfringens type c with a yield of about 24% in terms of biologically active beta-toxin. the purification involved ammonium sulfate fractionation, gel filtration through sephadex g-100, isoelectrofocusing in a ph 3 to 6 gradient, and immunoaffinity chromatography. the purified beta-toxin gave a single band on polyacrylamide gel electrophoresis. | 1977 | 201565 |
| experimental diarrhoea in human volunteers following oral administration of clostridium perfringens enterotoxin. | 1977 | 201601 | |
| 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 |
| increased numbers of heat-resistnat spores produced by two strains of clostridium perfringens bearing temperate phage s9. | sporulation kinetics and spore heat resistance data were compared for a lysogenic strain of clostridium perfringens, s9, before and after curing with ultraviolet irradiation. the cured strain showed the same growth rate in broth media as the lysogenic strain but took 6 h longer to form refractile spores. for lysogenized and cured strains the percentages of refractile spores produced that were heat-resistant (80 degrees c for 15 min) were 50 and 0.2, respectively. when reinfected with the tempera ... | 1977 | 201726 |
| [biological-economic study of the clostridium perfringens cultivation processes. 1. value of the phasic portrait in the prognosis of the processes of microbial cultivation]. | 1977 | 202118 | |
| [cultural properties of c1. perfringens resistant and sensitive to morphocycline]. | 1977 | 202190 | |
| [immunogenicity and thymus-dependence of the polymerized alpha-toxoid of clostridium perfringens]. | polymeric alpha-toxoid with a molecular weight of 450 000--600 000 was obtained by condensation of alpha-toxoid of cl. perfringens, type a, with glutaric aldehyde. experiments on guinea pigs showed that in the adsorbed preparations the immunogenic properties of both monomeric and polymeric alpha-toxoids are practically identical. the primary immune response after the immunization with nonadsorbed antigens was 3 times greater than that induced by the monomer. polymerization of alpha-toxoid failed ... | 1977 | 202354 |
| [pathogenesis of necrotizing enteritis caused by clostridium perfringens]. | 1977 | 202542 | |
| studies on nitrate reductase of clostridium perfringens. purification, some properties, and effect of tungstate on its formation. | nitrate reductase (nar) linked to reduced methyl viologen from clostridium perfringens was purified by ammonium sulfate precipitation. deae-cellulose chromatography, disc electrophoresis on polyacrylamide gel, and triple deae-sephadex chromatography. the specific activity was increased 1,200-fold with a yield of 9%. the purified preparation was nearly homogeneous in disc electrophoresis. it was brown, and its spectrum showed a slight shoulder near 420 nm as well as a peak at 280 nm. the molecula ... | 1977 | 202590 |
| microbiological investigation of meat wholesale premises and beef carcases in johannesburg. | microbiological surveillance by swabbing meat wholesaler premises revealed ineffective cleaning and build-up of bacteria. proper cleaning, sanitation and handling resulted in a vast improvement during 1975-77. beef samples from the neck of carcases in the wholesale trade were investigated by microbiological methods. excessive total bacterial counts were obtained from numerous carcases. most carcases carried coliform organisms. roughly 90% of carcases were contaminated with e. coli i; counts exce ... | 1977 | 202708 |
| clostridial wound infection: a hazard of small-bowel decompression. | 1977 | 199149 | |
| the substrate specificities of endo-beta-n-acetylglucosaminidases cii and h. | 1977 | 199169 | |
| structural studies on epsilon-prototoxin of clostridium perfringens type d. localization of the site of tryptic scission necessary for activation to epsilon-toxin. | 1977 | 199192 | |
| 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 |
| [effect of aminazin on changes in the electrical activity of the cerebral cortex under the influence of the toxin c1. perfringens type a]. | experiments on cats revealed that injection of chlorpromazine (3 mg/kg of body weight, intramuscular) one hour prior to the cl. perfingens toxin type a injection prevented the appearance of desynchronization of the electrical activity of the cerebral cortex usually observed during the first phase of intoxication. chlorpromazine injection postpones the appearance of the electrical activity depression phase during the second phase and prolonged the animals' life span from 1.5 to 2 times. the effec ... | 1977 | 199290 |
| processive and synchronous mechanism of polynucleotide phosphorylase phosphorolysis. a comparison between experimental results and those calculated from a theoretical study. | 1977 | 199439 | |
| regional localization of activity of clostridium perfringens type a enterotoxin in the rabbit ileum, jejunum, and duodenum. | rabbit ileal, jejunal, and duodenal loops were exposed to purified enterotoxin from clostridium perfringens type a and then perfused for comparative analysis of effects of the enterotoxin on each region of the intestine. ileal loops responded with enhanced net secretion of fluid and sodium, inhibition of chloride and glucose uptake, and substantial sloughing of epithelial cells. the jejunum responded with fluid secretion, enhancement of sodium secretion only during the first 20 min, inhibition o ... | 1977 | 199674 |
| application of 13c-nmr spectroscopy to in vitro analysis of enzyme kinetics. | the conversion of d,l-alpha-13c-histidine to similarly labeled alpha-13c histamine by bacterial and mammalian histidine decarboxylase was studied by 13c-nmr spectroscopy and glc-mass spectrometry. the results obtained with the partially purified bacterial enzyme were in essentially perfect agreement with results obtained simultaneously with a standard radioisotopic method using carboxyl-labeled-14c-l-histidine. for a crude tissue preparation of the mammalian enzyme, the radioisotopic method in ... | 1977 | 199715 |
| synthesis and biological activity of two metabolites of 1-methyl-5-(1-methylethyl)-2-nitro-1 h-imidazole, an antiprotozoal agent. | 5-(-hydroxyl-1-methylethyl-)-1-methyl-2-nitro-1 h-imidazole (6) and 5-(1,2-dihydroxyl-1-methylethyl)-1-methyl-2-nitro-1 h-imidazole (9) are the principal metabolites found in urines of animals (mice, rats, and dogs) treated with 1-methyl-5-(1-methylethyl)-2-nitro-1 h-imidazole (1), an effective antitrichomonas agent. these two metabolites have been synthesized. compound 6 was found to be less toxic than the parent compound 1 and to possess essentially the same activity against trichomonas vagina ... | 1977 | 199729 |
| [characteristics of alpha-toxin of clostridium perfringens and its role in the pathogenesis of gas gangrene (author's transl)]. | 1977 | 199761 | |
| [study of the variability of cl. perfringens type d]. | 1977 | 199982 | |
| [biologic-economic study of processes for cultivating clostridium perfringens. ii. comparison of the effectiveness of actual and predicted processes for cultivating microorganisms]. | the authors analyzed the efficacy of actual and prognosticated processes of cl. perfringens, type a, cultivation: periodic, semicontinuous, continuous, and combined monocyclic. comparative study permitted to choose the economically optimal processes, without any expenditure for their realization. monocyclic combined process which could provide a great amount of active toxin at short periods proved to be the most advantageous among the cultivation processes studied. | 1977 | 200039 |
| effect of microwave radiation on cells treated with membrane-injuring substances. | wish cells grown in vitro were pretreated with subcytotoxic concentrations of digitonin, cortisol and purified bacterial toxins -- staphylococcal beta-haemolysin or clostridium perfringens alpha-toxin and irradiated with 3 ghz electromagnetic wave (microwaves) at the field power densities 5 or 40 mw/cm2. at 40 mw/cm2 increase in temperature of the culture medium of about 2-3 degrees c was noted, while at 5 mw/cm2 no detectable increase in temperature was found. control and pretreated wish cells ... | 1977 | 200452 |
| physical changes in the epsilon prototoxin molecule of clostridium perfringens during enzymatic activation. | enzymatic activation of clostridium perfringens epsilon prototoxin removed a small basic part of the molecule, causing a slight change in molecular weight (32,700 to 31,200) and a large change in isoelectric point (from ph 8.02 into fractions of 5.36 and 5.74). | 1977 | 200566 |
| anaerobes in human biliary tracts. | during a 2-year period, 1,892 patients underwent biliary tract surgery at the mayo clinic. both aerobic and anaerobic cultures of bile were performed in 371 of these patients. sixty-nine percent of the cultures were positive, and 41% (117) of these grew anaerobes, although they were present in pure culture only twice. mixed cultures most commonly contained four different organisms (three aerobes and one anaerobe). bacteroides fragilis was the single most commonly isolated anaerobe and ranked fou ... | 1977 | 200634 |
| antimicrobial agent-induced diarrhea--a bacterial disease. | 1977 | 200682 | |
| gas gangrene and related infection: classification, clinical features and aetiology, management and mortality. a report of 88 cases. | the clinical features of gas gangrene and related infection seen in 88 patients over a 10-year period are described. it is suggested that clostridial infection could be simply classified as either 'gas-forming' or 'non-gas-forming'. the gas-forming group represents the more severe form of infection. non-clostridial gas gangrene may present in a variety of forms. the anaerobic streptococcus was the organism most frequently responsible, but these cases were indistinguishable from clostridial infec ... | 1977 | 196711 |
| acute clostridial enteritis. | 1977 | 196815 | |
| incorporation of the 1-pro-r and the 1-pro-s hydrogen atoms of ethanol into steroids and phosphatidylcholines in vivo. | the transfer of deuterium from chiral 1-monodeuteroethanols to various metabolites formed in the liver was studied in order to investigate the coupling of metabolic reductions to the alcohol dehydrogenase and the aldehyde dehydrogenase reactions. the ethanols were administered to female bile fistula rats for 10 h. the hydrogen at c-2 in the glycerol moiety of newly formed phosphatidylcholine molecules in bile, liver and plasma was derived to 22-25% from the 1-pro-r position and to 5-6% from the ... | 1977 | 196853 |
| [evaluation and determination of the antibacterial properties of pesticide combinations]. | 1977 | 196981 | |
| immobilized clostridium perfringens neuraminidase. substrate cleavage and enzyme release during incubation. | pure clostridium perfringens neuraminidase was immobilized on sepharose 4 b, azido-sepharose 4 b and controlled pore glass (cpg)- glycophase using different coupling procedures. the immobilized enzyme showed increased stability under various conditions relative to the soluble enzyme. the low release of active enzyme from the supports under incubation conditions was quantitated using a highly sensitive radioactive assay. the activity of the immobilized enzyme was dependent on the nature of the su ... | 1977 | 196995 |
| preparative polyacrylamide gel electrophoresis purification of clostridium perfringens enterotoxin. | preparative polyacrylamide gel electrophoresis has been used to purify the enterotoxin of clostridium perfringens from sephadex g-100 extracts. purified toxin of high specific activity was eluted in 1 to 3 h, depending upon the length of the acrylamide gel used. recovery of biological activity with this technique ranged from 80 to 90%. the purity and physical characteristics of the toxin were similar to those previously reported for the protein purified by other methods. use of preparative elect ... | 1977 | 197021 |
| fulminant puerperal sepsis associated with aplastic anemia: the case for prophylactic antibiotic therapy. | fulminant puerperal sepsis due to clostridium perfringens occurred in a primiparous 19-year-old woman who developed aplastic anemia during pregnancy. although the risk of infectious complications among pregnant women with compromised host defenses has not been accurately determined, it appears to be increased, particularly in patients with granulocytopenia. it therefore seems reasonable to give antibiotic prophylaxis during the intrapartum period to immunosuppressed women who come to term. consi ... | 1977 | 197236 |
| [the significance of the presence of cl. perfringens in the feces and of alpha antitoxins in the serum of patients with rheumatoid arthritis (author's transl)]. | 1977 | 197360 | |
| activation of a procarcinogen to a mutagen by cell-free extracts of anaerobic bacteria. | the salmonella mutagenicity assay can be coupled to cell-free preparations derived from anaerobic bacteria (clostridium perfringens and bacteroides fragilis) to activate a procarcinogen to a mutagen. this activity is destroyed by heating and by digestion with pronase and it is sensitive to oxygen. these findings indicate that the salmonella mutagenicity assay can be adapted to the study of the role of anaerobes in the activation of carcinogens. | 1977 | 197405 |
| [gas gangrene. five cases of an endemic infectious disease (author's transl)]. | 1977 | 197510 | |
| bacterial hazards. | 1977 | 197534 | |
| [influence of animal fatigue on seeding of meat and internal organs with c1. perfringens]. | 1977 | 197710 | |
| [characteristics of the immunologic response of animals to clostridium perfringens anatoxin]. | experiments were conducted on guinea pigs, rabbits and mice (mongrel and inbred); immunogenic properties of cl. perfringens toxoids of different purity were studied. toxin neutralization and passive hemagglutination tests were used to determine the antitoxic immunity level. it appeared that in the immunization of guinea pigs and rabbits the degree of immunogenicity of the preparations increased with the elevation of their specific activity. under the same conditions both the mongrel and the inbr ... | 1977 | 197752 |
| [clostridium perfringens enterotoxin]. | 1977 | 197754 | |
| action of sphingomyelinase c and other lipid-specific agents as inhibitors of fc binding and locomotion in human leucocytes. | the binding of antibody-coated chicken erythrocytes (ea) to human blood lymphocytes and monocytes is inhibited by pretreatment of the leucocytes with sphingomyelinase c. inhibition of rosetting of neuraminidase-treated ea with neutrophils is also seen with this enzyme. the cholesterol-binding theta-toxin of clostridium perfringens and pronase also inhibit ea-rosette formation, but less strongly than sphingomyelinase. the lipid-specific agents also inhibit chemotactic migration of leucocytes to c ... | 1977 | 198359 |
| association of clostridium perfringens type a with human diarrhoeal cases. | 1977 | 198362 | |
| microbiology of new zealand feral venison. | 1977 | 198612 | |
| mastitis in a heifer caused by clostridium welchii, type "a". | 1977 | 198940 | |
| rapid detection and quantitation of clostridium perfringens enterostoxin by counterimmunoelectrophoresis. | conditions for detection and quantitation of clostridium perfringens enterotoxin by counterimmunoelectrophoresis are described. as little as 0.2 microgram of enterotoxin per ml could be detected. the test was found to be rapid, sensitive, specific and easy for the detection and quantitation of enterotoxin. | 1977 | 199110 |
| increased spore yields of clostridium perfringens in the presence of methylxanthines. | the methylxanthines caffeine, theophylline, and isobutylmethylxanthine greatly increased spore yields of clostridium perfringens strains fd-1, ps52, and ps49 when grown on duncan-strong medium or on a new casein-digest medium. four other strains (ka3, and national collection of type cultures strains 8798, 8238, and 10240) failed to show any significant increase when tested under similar conditions. the degree of sporulation increase was influenced by the carbohydrate energy source in some strain ... | 1977 | 199111 |
| dialysis technique for containment of microbial populations inoculated into food systems. | a technique utilizing dialysis tubing was developed for the containment of microbial populations introduced into a food system. the entrapment of the inoculum was accomplished while reducing interference with interactions between the sample and the surrounding environment. | 1977 | 199112 |
| thermal inactivation of ileal loop-reactive clostridium perfringens type a strains in phosphate buffer and beef gravy. | the thermal resistance of spore crops produced from each of two ileal loop-reactive strains of clostridium perfringens type a was determined in two suspending vehicles consisting of 0.067 m (ph 7.0) phosphate buffer and a commercial beef gravy. d115.6 values obtained in buffer and enumerated after pretreatment with sodium ethylenediaminetetraacetate and recovery in plating medium containing lysozyme were two- to threefold greater than those obtained without this treatment. d115.6 values obtained ... | 1977 | 199113 |
| a progressive approach to the problem of foodborne infections. | qualitative and quantitative bacteriological examinations of 100 samples of perishable foods from 39 retail stores were performed to determine the presence of bacterial contaminants and to explore the feasibility of establishing and utilizing microbiological standards in enforcement. forty-six per cent of the samples had standard plate counts in excess of 100,000 per gram, 17 per cent showed coliform organisms in excess of 100 per gram, 20 per cent revealed the presence of staphylococcus aureus ... | 1977 | 188346 |
| erythromycin-resistant clostridium welchii. | 1977 | 189875 | |
| interaction of pt(ii) complexes with dnas from various sources. a circular dichroism study. | the interaction of cis- and trans-pt(nh3)2cl2 with dnas of different base composition was studied by means of circular dichroism (cd) spectroscopy. the spectra obtained indicated a partial transformation of the secondary structure of dna (b- less than c transition) with an increased helix winding. subtle differences were noted between the two isomers, possibly related to changes in base orientation due to the different molecular geometries of the p+(ii) complexes. | 1977 | 189945 |
| [lipase activity of anaerobic bacteria on glycerol-tributyrate determined by gas-liquid chromatography]. | anaerobic bacteria are classified among other criteria by the presence or absence of phospholipase and lipase. the liquid gas chromatographic method detects with great sensibility the lipasic activity of the anaerobic bacteria. a liidolytic action has been demonstrated in cl. perfringens. | 1977 | 189951 |
| [sanitary studies on the control of a sterilizaton process in a rendering plant. 1. sanitary studies on a rendering plant utilizing the anderson process]. | 1977 | 189983 | |
| evidence for stable messenger ribonucleic acid during sporulation and enterotoxin synthesis by clostridium perfringens type a. | stable messenger ribonucleic acid (mrna) was shown to be involved in both enterotoxin synthesis and synthesis of other spore coat proteins in clostridium perfringens. when used at a concentration that inhibited [14c]uracil incorporation, rifampin, a specific inhibitor of deoxyribonucleic acid-dependent rna polymerase, prevented incorporation of a mixture of labeled amnoo acids by 3-h sporulating cells. at that time, enterotoxin protein was first detectable and cells were primarily at stage ii or ... | 1977 | 190209 |
| characterization of dna strand breakage in vitro by the antitumor protein neocarzinostatin. | the antitumor protein antibiotic neocarzinostatin causes strand scission of dna in vitro in the presence of a sulfhydryl compound. the breaks are single stranded in nature and bear 5'-phosphoryl termini. all four deoxymononucleotides are recoverable at the 5'-ends of the cleavage sites although a higher proportion of dgmp and tmp are consistently found. the lesions are not repairable with polynucleotide ligase from escherichia coli. a quantitative assay was developed to determine the ph profile ... | 1977 | 189801 |
| stable l-forms of clostridium perfringens: growth, toxin production, and pathogenicity. | growth and toxin production of stable l-forms of clostridium perfringens grown in a mini-fermentor were monitored. a gradual but steady increment in viable count occurred over a 7-h period, followed by death. the peak of viability preceded the optical density peak by 3 h. theta, alpha, kappa, and lambda toxins were measured, with theta toxin appearing first in the culture supernate. growth of the parent bacillus form of c. perfringens was compared under similar conditions. toxin levels achieved ... | 1977 | 188763 |
| laboratory confirmation of an outbreak of clostridium perfringens food poisoning. | a foodborne outbreak in a group of eleven individuals sharing a common meal, eight of whom reported symptoms and an incubation period compatible with clostridium perfringens food poisoning, was confirmed by the following laboratory criteria: (a) the c. perfringens count in the suspect food, chicken pie, was at least 10(5) per gram; (b) the median fecal c. perfringens spore count in convalescing patients was greater than 10(6) per gram: (c) an indentical serotype (ps63) was isolated from both the ... | 1977 | 188789 |
| bacteriological quality of ingredients used in ground beef manufacture. | 1977 | 188798 |