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autolytic enzyme system of streptococcus faecalis. iv. electron microscopic observations of autolysin and lysozyme action.cell walls (log walls) were isolated from cultures of streptococcus faecalis atcc 9790 in the exponential phase of growth. these walls were either allowed to undergo autolytic dissolution (in the presence or absence of trypsin) or wall autolysis was inactivated with sodium dodecylsulfate (sds walls). inactivated walls were treated either with lysozyme or with isolated, partially purified s. faecalis autolysin. during wall lysis, samples were removed, negatively stained with phosphotungstate, and ...19684973130
thermal injury and recovery of streptococcus faecalis.exposure of streptococcus faecalis r57 to sublethal heating produced a temporary change in the salt tolerance and growth of the organism. after sublethal heat treatment at 60 c for 15 min, greater than 99.0% of the viable population was unable to reproduce on media containing 6% nacl. in addition, the heated cells displayed a sensitivity to incubation temperature, ph, and 0.01% methylene blue. when the injured cells were placed in a synthetic medium, recovery occurred at a much slower rate than ...19684973066
[studies on lactic acid producing bacteria. mixed culture of normal intestinal flora of lactic acid producing bacteria]. 19684972993
differentiation of streptococcus faecalis andrewes and horder and streptococcus faecium orla-jensen based on the amino acid composition of their murein.the amino acid composition of the murein (peptidoglycan) of 75 strains of enterococci was investigated. all strains designated streptococcus faecalis according to their physiological properties contained the lysine-alanine type of murein; all strains classified as s. faecium contained the lysine-aspartic acid type of murein.19684972913
bacteriocin (hemolysin) of streptococcus zymogenes.the sensitivity of streptococcus faecalis (attc 8043) to s. zymogenes x-14 bacteriocin depends greatly on its physiological age. sensitivity decreases from the mid-log phase on and is completely lost in the stationary phase. the sensitivity of erythrocytes to the hemolytic capacity of the bacteriocin showed considerable species variation. the order of increasing sensitivity was goose < sheep < dog < horse < human < rabbit. however, when red cell stromata were used as inhibitors of hemolysis in a ...19684972910
[antibacterial activity in vitro of a new rifamycin: rifamide]. 19684972879
[effect of aristolochia acid on the phagocytosis]. 19684972828
folate derivatives in the liver of riboflavin--deficient rats. 19684972728
oral streptococci and commercial grouping sera. 19684972723
studies on raoot canal medicaments. iv. antimicrobial effect of root canal medicaments. 19684972722
the biosynthesis of folic acid compounds in plants. ii. some properties of dihydropteroate-synthesizing enzyme in pea seedlings. 19684972712
the biosynthesis of folic acid compounds in plants. i. enzymatic formation of dihydropteroic acid and dihydrofolic acid from 2-amino-4-hydroxy-6-substituted pteridines by cell-free extracts of pea seedlings. 19684972711
adjunctive use of antibiotics in traumatic dental procedures. 19684972570
gentamicin as a bactericidal agent in virological tissue cultures.for use in virological tissue culture work, gentamicin is more convenient than penicillin + streptomycin. it is bactericidal for a wider range of organisms, may be used at only half the concentration needed for penicillin and streptomycin, does not apparently interfere with growth of tissue cultures and viruses, remains active at 37 degrees c., and, most remarkable of all, it is stable at autoclave temperatures and so can be put into media before sterilization, thus lessening the number of addit ...19674972293
the separation of the ribosomal proteins of streptococcus fecalis by isoelectric focusing. amino acid composition of the total ribosomal proteins and of an acidic fraction. 19684972264
[studies on normal fecal flora in adults]. 19684972162
growth of streptococcus faecalis under high hydrostatic pressure and high partial pressures of inert gases.growth of streptococcus faecalis in a complex medium was inhibited by xenon, nitrous oxide, argon, and nitrogen at gas pressures of 41 atm or less. the order of inhibitory potency was: xenon and nitrous oxide > argon > nitrogen. helium appeared to be impotent. oxygen also inhibited streptococcal growth and it acted synergistically with narcotic gases. growth was slowed somewhat by 41 atm hydrostatic pressure in the absence of narcotic gases, but the gas effects were greater than those due to pre ...19684972126
the metabolism of glyceride glycolipids. i. biosynthesis of monoglucosyl diglyceride and diglucosyl diglyceride by glucosyltransferase pathways in streptococcus faecalis. 19684972101
isolation of protoplasts in a case of enterococcal endocarditis. 19684972016
[treatment with maximal tolerated doses of antibiotics. i. penicillin and cephalosporin antibiotics]. 19684971950
transport of aminophosphonic acids in lactobacillus plantarum and streptococcus faecalis.aminophosphonic acids analogous to glutamic acid, aspartic acid, alanine, and valine were actively accumulated by lactobacillus plantarum. uptake was dependent on the availability of glucose and, in all cases, the estimated intracellular concentrations substantially exceeded extracellular levels. during uptake, there was little metabolism of tritiated 2-amino-3-phosphonopropionic acid (app), the aspartic acid analogue, and a negligible incorporation of isotope from this substance into the nuclei ...19684971894
cores, microbial organelles possibly specific to group d streptococci.a long, thin, approximately cylindrical core spans the interior of cells of 24-hr cultures of all group d streptococci that were examined, five strains of streptococcus faecalis, single strains of s. faecalis subsp. zymogenes and s. durans, and three strains of streptococcus spp. in one strain of s. faecalis, serial section electron microscopy showed that most cells possess a core. the core is 0.10 to 0.16 mum thick and consists of a matrix and an axial array of ribosomelike particles. it resemb ...19684971888
[treatment with maximal tolerated doses of antibiotics. ii. chloramphenicol, lincomycin, and other preparations]. 19684971814
[schiff bases of nicotinoyloxybenzaldehydes with anilines and their bacteriostatic and fungistatic effect]. 19674971773
[correlation between chemical constitution and antimicrobial effect. 19. preparation of some beta-rhodanpropionic acid anilides and their bacteriostatic and fungstatic properties]. 19674971606
[on the fungistatic and barteriostatic properties of 4 new substance classes from isothiocyanates and n,n-bis-(2-chloroethyl)-amine]. 19674971605
search for new chemotherapeutics. v. a study of the bac- teriostatic and fungistatic effects of certain substituted benzimidazoles and p-hydroxypropiophenon in agar medium with 10 per cent horse blood. 19674971500
[behavior of the intestinal flora of healthy persons under the administration of ethacridine lactate]. 19674971498
incidental virus particles in chicken heart valve. 19684971456
2,4-bis(aryloxy)pyrimidines as antimierobial agents. 19684971356
[hemoculture and the anaerobic flora of the oro-pharyngeal cavities and the respiratory apparatus]. 19684971279
[on the dynamics of sensitivity to antibiotics of different microorganisms, isolated from patients of a surgical section]. 19684971186
[preparation of various 1,3-benzoxathiols and examination of their bacteriostatic and fungistatic properties]. 19664971172
[observations on the antibacterial effect of polyoxymethyleneurea (polynoxylin) in vitro]. 19674971132
[a method for determining the concentration of folic acid antagonists in the urine and blood in chemotherapy]. 19674971096
clinical conference in pulmonary disease. successful management of severe pneumonia in a patient with advanced emphysema. 19684971057
enhancing effect on alkalinization of the medium on the activity of erythromycin against gram-negative bacteria.the antibacterial activity of erythromycin was markedly enhanced by alkalinization of the culture medium or urine within the clinical range (ph 6.0 to 8.2). this effect was demonstrated against recent isolates of escherichia coli, klebsiella pneumoniae, enterobacter sp., and pseudomonas aeruginosa, as well as against staphylococcus aureus and streptococcus faecalis. the urine of normal volunteers was made alkaline by ingestion of sodium bicarbonate or acetazolamide (diamox) during administration ...19684970991
[further data on motile streptococci]. 19674970896
[differential resistance of typical enterococci, n-streptococci as well as str. viridans and str. salivarius against anionic detergents as a criterion for their differentiation]. 19674970769
lytic effects of staphylococcal alpha-toxin and delta-hemolysin.several preparations of staphylococcal alpha-toxin and delta-lysin were studied in order to compare hemolytic activity with capacity to lyse bacterial protoplasts. delta-lysin in relatively low concentration lysed protoplasts of sarcina lutea, protoplasts of streptococcus faecalis, and spheroplasts of escherichia coli. lysis of bacterial protoplasts by preparations of alpha-toxin appeared to be due to contamination of the preparations with delta-lysin. data comparing the protoplast-lysing activi ...19684970650
[usefulness of some strains of lactobacteria in the microbiological determination of amino acids]. 19684970632
tetrahydrofolate-dependent enzyme activities of the rat liver in riboflavin deficiency. 19684970398
synthesis and biological activity of some n6-alkyladenosines. 19684970357
resistance of staphylococci to halogens as related to a swimming pool environment. 19684970354
determination of amino sugars in mixtures containing glucosamine, galactosamine and muramic acid.a colorimetric method is described whereby the direct quantitative determination of glucosamine, galactosamine and muramic acid can be achieved without previous treatment of the cell-wall hydrolysate, for example by column chromatography. molar ratios of hexosamines in cell-wall preparations, from a number of bacterial species, determined by this method were found to be in general agreement with previously published results.19684970209
distribution of lysozyme in the rat kidney and the role of this enzyme in experimental pyelonephritis. 19684970080
the treatment of bacterial endocarditis. 19644970074
the in vitro activity of vibramycin (doxycycline). 19684969956
[value of enterococci as a hygienic-sanitary indicator of water pollution]. 19674969822
microscopic colonial morphology of an enterococcal l form. 19684969804
[comparative evaluation of antibacterial properties of the medicinal drug mumie and penicillin]. 19674969791
effect of different media on in vitro studies of antibiotic combinations.in an effort to determine the adequacy of a standard broth medium in the evaluation of antibiotic combinations, 20 strains of various bacterial species were studied simultaneously in mueller-hinton broth and in freshly drawn human serum from apparently healthy volunteers. studies of growth dynamics by use of the usual plate dilution technique for quantitating colony-forming units were performed with strains of staphylococcus aureus (methicillin-resistant and methicillin-susceptible), streptococc ...19684969662
molar growth yields of certain lactic acid bacteria as influenced by autolysis.molar growth yields determined from batch cultures of streptococcus diacetilactis and s. faecalis were appreciably greater at the peaks of maximal growth than after continued incubation and considerable autolysis. the higher molar growth yields were about equal to those determined in a continuous culture. autolysis during logarithmic growth was minimal. the average y value for adenosine triphosphate (atp), determined by using limiting concentrations of glucose, galactose, lactose, and maltose fo ...19684969603
[the danger of infection during treatment with an indwelling catheter]. 19664969362
desacetyl-rifamycins: preparation and antibacterial properties. 19684969311
effect of salt concentration in the recovery medium on heat-injured streptococcus faecalis.properties relating to the recovery of three heat-injured strains of streptococcus faecalis were studied. all strains were cultured in all purpose plus tween broth (apt) at 30 c for 24 hr before being subjected to heat in fresh apt broth. apt recovery medium containing various added amounts of nacl, kcl, mgcl(2), or kcl and mgcl(2) was used to assess the effect of salts on the recovery of thermally injured s. faecalis. it was evident that, upon exposure to heat, s. faecalis cells became sensitiv ...19684968964
seminars on lesch-nyhan syndrome. aspects of purine metabolism. 19684968794
[lysis (in vitro) of certain types of lactobacillus by a type of streptococcus liquefaciens: incidence of the phenomenom on the equilibrium between bacteria in the digestive tract of the mouse (gnotoxenic)]. 19684968738
[serologic typing of streptococcus faecalis]. 19674968729
[biosynthesis and metabolism of folic acid and pteridines]. 19674968216
[incorporation of thymine and cytosine analogs into bacterial deoxyribonucleic acid]. 19674968212
[studies of phagocytosis of various germs by human leukocytes]. 19664968160
[on the occurrence of various types of streptococci of the serological group d in urological infections]. 19664968148
[changes in the intestinal microflora in dysenteric patients depending on the method of administration of tetracycline]. 19664968144
[characteristics of enterococci isolated from inflammatory processes of the sexual organs]. 19664967882
[the use of kf medium for the detection of enterococci]. 19664967845
[on lysins of enterococci]. 19664967691
[experiment for the international standardization of reference-preparation of gramicidin]. 19674967507
enterococcal endocarditis. 19684967461
rapid and sensitive detection of bacteria by gas chromatography.a gas chromatograph fitted with electron capture and flame ionization detectors was employed for the rapid detection of bacteria by analysis for their metabolic products. the presence of proteus vulgaris, streptococcus faecalis, s. liquefaciens, escherichia coli b, bacillus cereus, and b. popilliae was detected in 2 to 4 hr in media inoculated with less than 10(4) cells per ml, whereas a 7- to 12-hr growth period was required for the detection of products formed in cultures of serratia marcescen ...19684967452
[3-o-alpha-d-glucopyranosyl-alpha,beta-trehalose from streptococcus faecalis, 3]. 19674967406
new observations on the determination of bacterial lipid phosphorus. 19684967221
comparison of the patterns of pyuria in experimental pyelonephritis caused by streptococcus faecalis and pseudomonas aeruginosa. 19684967168
a laboratory comparison of tri-acetyl oleandomycin and nine other antibiotics. 19684967052
a versatile buffered scintillation system. 19684967039
bacterial colonisation of the skin of the newborn. 19684966873
wasting disease induced with cortisol acetate. ii. bacteriologic studies. 19684966845
effect of hydroxylysine on the biosynthesis of lysine in streptococcus faecalis.we were able to show that two lysine-independent mutants of streptococcus faecalis atcc 8043 contained the enzymes for the usual bacterial pathway for lysine biosynthesis. because of this synthetic capacity, one mutant, the lys(+)ohlys(s) strain, could not grow in the presence of hydroxylysine without a lysine supplement. both lysine and hydroxylysine inhibited the first enzyme of the pathway, aspartokinase. unlike the escherichia coli enzyme, s. faecalis dihydrodipicolinic acid synthetase was n ...19684966828
effects of nigericin and monactin on cation permeability of streptococcus faecalis and metabolic capacities of potassium-depleted cells.at a concentration of 10(-6)m, nigericin and monactin inhibited growth of streptococcus faecalis, and the inhibition was reversed by addition of excess k(+). in the presence of certain antibiotics, the cells exhibited increased permeability to certain cations; internal rb(+) was rapidly lost by exchange with external h(+), k(+) rb(+), and, more slowly, with na(+) and li(+). no effect was observed on the penetration of other small molecules. cation exchanges induced by nigericin and monactin were ...19684966827
[coccal lactic acid bacteria isolated from cattle rumen]. 19664966792
the occurrence of acylated sugar derivatives in the lipids of bacteria. 19684966719
a modification of the park and johnson reducing sugar determination suitable for the assay of insoluble materials: its application to bacterial cell walls. 19684966716
studies of polymorphonuclear leukocytes from patients with chronic granulomatous disease of childhood: bactericidal capacity for streptococci. 19684966707
media and methods for isolation and enumeration of the enterococci. 19664966688
[an antibiotic from the indian cress nasturtium in urinary tract infections]. 19664966513
semisynthetic penicillins. viii. the use of phenacyl 6-aminopenicillinates in penicillin synthesis. 19674966307
an electron microscope study of a streptococcal bacteriophage. 19674966201
synovial fluid changes produced by infectious arthritis in cattle. 19684966158
[mode of action of antibiotics on growth]. 19684965997
[reliability of sensitivity test value]. 19674965994
effect of algicidal quaternaries on the germicidal activity of chlorine on swimming pool water.the swimming pool water disinfectant test method of the association of official analytical chemists was used to determine the effect of the accepted level of 2 ppm of some commercial quaternary ammonium algicides on the germicidal activity of chlorine. accurate determinations on the amounts of residual available chlorine in chlorine-quaternary mixtures could not be made by the usual chemical methods. this made it necessary to base all comparisons on the starting concentrations of available chlor ...19674965942
[on the microflora of nongonorrheal urethritis in men]. 19664965907
[a new glucotriose, isolated from streptococcus faecalis. ii. o-alpha-d-glucopyranosyl-(1 replaced by 3)-o-beta-d-glucopyranosyl-alpha-d-glucopyranoside]. 19664965828
[a new glucotriose, isolated from streptococcus faecalis. i]. 19664965826
biosynthesis of folic acid. 3. characterization of the genetic blocks in the pathway for pterinoid synthesis in microorganisms requiring folic acid. 19664965819
intravenous penicillin: the use of large doses in the treatment of endocarditis. 19674965752
[bacteriological diagnosis of urinary tract infections]. 19674965648
inactivation of microorganisms by electrohydraulic shock.the electrohydraulic shock treatment of microorganisms was accomplished by discharging high-voltage electricity (8 to 15 kv) across an electrode gap below the surface of aqueous suspensions of the microorganisms. this treatment was effective in destroying escherichia coli, streptococcus faecalis, vegetative cells and spores of bacillus subtilis, and bacteriophage specific for s. cremoris ml1. the presence of added protein in bacterial suspensions resulted in reduced bactericidal action. water su ...19674965615
effect of 6-azathymine on the isolation and properties of deoxyribonucleic acid from streptococcus faecalis. 19674965369
a quantitative comparison of the faecal flora of patients with ulcerative colitis and that of normal persons. 19674965244
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