| relationship between serum antibiotic concentration and inhibiting potency of the serum. application to ampicillin and amoxicillin. | | 1975 | 654 |
| inhibition of bacterial wall lysins by lipoteichoic acids and related compounds. | | 1975 | 1027 |
| microbiological study of gentamiycin. | gentamycin prepared at the all-union research institute of antibiotics did not differ by its antibacterial spectrum and the activity level from gentamycin samples from other countries. by its activity against clinical strains of ps. aeruginosa gentamycin was somewhat inferior than polymyxin but much more superior than carbenicillin. an agar-diffusion method using bac. pumilus ntcc 8241 as the test microbe was developed for determination of gentamycin activity. the gentamycin sulfate complex and ... | 1975 | 2095 |
| the interrelationship between the inhibitory activity of milk with different types of beta-lactoglobulins and the resistance of cattle to mastitis. | in the course of the investigation of piebald (black-white) cattle it is found that 17,62% animals produce the aa type beta-lactoglobulin, 49,52%--the ab type and 32,86%--the bb type. the higher inhibitory activity of milk with the bb type beta-lactoglobulin was found which retained in dilution 1 : 32. the total flora of teat, cyst and parenchyma milk of animals with the bb type beta-lactoglobulin as well as enterococcus bacteria were much lower than in milk of cows with the aa type homogenous f ... | 1975 | 5340 |
| gentamicin-susceptibility of various pathogens isolated from clinical materials. | we studied on the antibacterial activity of gentamicin against various pathogens isolated from clinical materials mainly isolated during 1974 and 1975, comparing with other antibiotics. beta hemolytic streptococci, pneumococci and enterococci are less susceptible to gentamicin than staphylococci. staph, aureus and staph. epidermidis resistant to various antibiotics are very susceptible to gentamicin, and no resistant strain to this drug was found. haemophilus influenzae, h. parainfluenzae and h. ... | 1976 | 5619 |
| microbial interactions in foods: meats, poultry and dairy products. | | 1976 | 5780 |
| bactericidal mechanisms in rabbit alveolar macrophages: evidence against peroxidase and hydrogen peroxide bactericidal mechanisms. | the role of peroxidase-mediated bacterial killing by rabbit alveolar macrophages was examined. during 3 h of incubation in vitro, alveolar macrophages ingested and killed greater than 88% of the streptococcus faecalis, proteus mirabilis, or streptococcus pneumoniae present in the incubation mixture. preincubation of alveolar macrophages with inhibitors of catalase, 3-amino-1,2,4-triazole or sodium nitrite, did not alter their bactericidal potential. iodination of ingested zymosan particles, a pe ... | 1976 | 7533 |
| the role of microflora in development of graft-versus-host disease. | | 1976 | 11583 |
| ultrastructural, physiological, and cytochemical characterization of cores in group d streptococci. | cores are large, rod-shaped structures that have been found almost exclusively in group d streptococci, measure 0.1 to 0.16 mum in diameter, and extend the width or length of cells. this study has shown that cores are produced in the cells at a reproducible point in early stationary growth after extensive mesosomal formation and after the ph has dropped below 6.5. when cells containing cores were introduced into a fresh medium with a ph above 6.5, the structures disappeared within 5 min. the str ... | 1977 | 12140 |
| resistance to antibiotics of bacteria involved in respiratory infections (author's transl). | the present status of resistance to antibiotics of bacteria involved in respiratory infections is reviewed. schematically it can outlined as follows. streptococcus b-haemolyticus as well as pneumococcus did not change their sensitivity to penicillin, but some strains are now resistant to tetracycline. streptococcus viridans, enterococcus and h. influenzae did not change substantially their sensitivity to antibiotics. staphylococcus aureus is the bacterial species that always poses some problems ... | 1976 | 13744 |
| serological grouping of streptococci by a slide coagglutination method. | a new method for the serological grouping of streptococci by coagglutination with specific antibodies absorbed to protein a-containing staphylococci has been assessed. a total of 242 strains of streptococci, including beta-haemolytic streptococci of groups a, b, c, f, and g, streptococcus pneumoniae and strep. faecalis were studied. all streptococci of groups a, b, c, and g, groupable by standard methods, were correctly grouped by coagglutination, although 7-3% showed varying degrees of cross-a ... | 1977 | 14975 |
| resistance mechanism of chloramphenicol in streptococcus haemolyticus, streptococcus pneumoniae and streptococcus faecalis. | the chloramphenicol resistance of streptococcus haemolyticus, streptococcus pneumoniae and streptococcus faecalis isolated from clinical materials was proved to be due to an inactivating enzyme produced by these bacteria. the inactivated products of chloramphenicol were identified as 1-acetoxy, 3-acetoxy and 1,3-diacetoxy derivatives by thin-layer chromatography and infrared spectroscopy. the responsible enzyme was thus confirmed to be chloramphenicol acetyltransferase. the enzyme was inducible. ... | 1977 | 16197 |
| bacterial endocarditis: clinical and bacteriological aspects and prognostic factors. | the microbiological, clinical and therapeutic aspects of all (71) cases of bacterial endocarditis admitted to the hôpital cantonal, geneva, between august 1970 and october 1974 were reviewed: there was a definite trend towards higher prevalence of acute cases compared to subacute cases. the pathogenic role of s. epidermidis, mostly in cases of prosthetic valve endocarditis, could be demonstrated in several cases. when defined initially by microbiological criteria only, acute endocarditis were ch ... | 1977 | 17156 |
| in vitro inhibition of growth of neisseria gonorrhoeae by genital microorganisms. | the ability of microorganisms present in titers of over 10(5)/ml in the vaginal or cervical secretions to inhibit growth of n. gonorrhoeae in vitro was tested. study of a strain of n. gonorrhoeae against 77 microorganisms demonstrated that most strans of s. epidermidis, s. aureus and the one "gaffkya anaerobia" interfered with the growth of the n. gonorrhoeae. a minority of strains of s. viridans, neisseria, candida and bifidobacterium demonstrated interference. no strains of enterococcus, dipth ... | 1977 | 17163 |
| plaque formation by streptococci in an artificial mouth and factors influencing colonization. | | 1977 | 18435 |
| antimicrobial activity of human ascitic fluid. | | 1977 | 19339 |
| use of furagin in treatment of urinary tract infections. | | 1978 | 25493 |
| the antimicrobial activity of urine of paraplegic patients receiving methenamine mandelate. | the antimicrobial activity of urine collected from adult male paraplegics ingesting methenamine mandelate (mm) was evaluated. the in vitro bacterial growth in urine from these patients was inhibited when the free formaldehyde (hcho) concentration was 10 to 22 microgram per ml. when the hcho concentration was in the region of 28 microgram per ml or greater, bactericidal effect became apparent. urine containing 1323 microgram of mm per ml with a ph of 5.9 when freshly voided had sufficient hcho to ... | 1978 | 30734 |
| effect of storage at 1 degree and 4 degrees c on viability and injury of staphylococcus aureus, escherichia coli and streptococcus faecalis. | | 1979 | 35509 |
| reduction of fecal indicator bacteria in sewage effluent when pumping for crop irrigation. | when sewage effluent was pumped from a lagoon for spray irrigation the pumping process reduced the fecal coliforms (fc) by 66% and the fecal streptococci (fs) by 91%. bactericidal effects associated with the pumping of effluent were investigated in the laboratory by seeding sterilized effluent with fecal bacteria and repeatedly passing the liquid through a centrifugal impeller type pump at 50 psi pressure. the pumping effect was cumulative, 49 and 90% of fc being killed after two and four passag ... | 1979 | 38272 |
| does penicillin kill bacteria?. | the thesis is presented that the bactericidal action of penicillin and of other inhibitors of cell wall peptidoglycan synthesis, such as vancomycin and cycloserine, is secondary or tertiary to their ability inhibit specific reactions in the assembly of an osmotically protective cell wall. examples are given of the inhibition of these reactions, which results in inhibition of cell growth (bacteriostatic action) in the absence of either cellular lysis or rapid loss of viability. thus, in some inst ... | 1979 | 44383 |
| 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 |
| chemical modification of peptide antibiotics: part iv--biologically active synthetic peptides & derivatives. | | 1976 | 67080 |
| a resonance raman and electronic absorption probe of membrane energization. quinaldine red in cells of streptococcus faecalis. | resonance raman and electronic absorption spectra were used to show that the state of an amphiphilic cation, relative to dilute aqueous solution, changes when it is accumulated by cells of streptococcus faecalis when they are energized. the general characteristics of the cation employed, quinaldine red, closely paralleled those of other amphiphilic cations which have been used to measure membrane potential. a major aspect of the change is that in sodium-loaded cells, essentially all of the quina ... | 1979 | 39936 |
| magnitude of pollution indicator organisms in rural potable water. | a total of 460 water samples were randomly drawn from the potable water supply sources of rural communities in three counties of south carolina. about 10% of the population, not incorporated in municipalities, was sampled. the samples were tested for total coliforms, escherichia coli, and fecal streptococci. significant levels of these pollution indicator organisms were detected in almost all the water supplies. total coliforms were the most common, and only 7.5% of the water supplies were uncon ... | 1979 | 36849 |
| casein degradation and amino acid liberation in milk by two highly proteolytic strains of lactic acid bacteria. | amongst 100 isolates of lactic acid bacteria, lactobacillus bulgaricus and streptococcus feacalis proved to be highly proteolytic as demonstrated by starch gel electrophoresis and liberation of various amino acids. both these organisms hydrolysed casein differently to produce different concentrations of amino acids. | 1977 | 70973 |
| stereospecificity of sodium borohydride reduction of tyrosine decarboxylase from streptococcus faecalis. | sodium boro[3h]hydride reduction of tyrosine decarboxylase from streptococcus faecalis followed by complete hydrolysis of the enzyme produces epsilon-[3h]pyridoxyllysine. degradation of this material to [4'-3h]pyridoxamine and stereochemical analysis with apoaspartate aminotransferase shows that the re side at c-4' of the cofactor is exposed to solvent at ph 5.5 and 7.0. after binding of l-tyrosine at ph 5.5 or tyramine at ph 7.0 to the holoenzyme, sodium boro[3h]hydride reduction proceeds from ... | 1979 | 36380 |
| effect of ionizing radiation on transmembrane potential of streptococcus. | | 1979 | 35814 |
| culture-negative endocarditis. | | 1978 | 74643 |
| attachment of bacteria to exfoliated cells from the urogenital tract. | to establish urogenital infections, organisms must adhere to the mucosal lining. a differential adherence capacity among various bacterial species was observed when exfoliated urethral and urothelial cells were tested in an in vitro system. no difference in the adherence capacity of a particular species was observed when tested with exfoliated cells obtained from voided urine from different healthy individuals of the same sex. escherichia coli harvested directly from urine specimens of patients ... | 1979 | 34577 |
| transferable drug resistance to group a and group b streptococci. | | 1978 | 76183 |
| stomach as source of bacteria colonising respiratory tract during artificial ventilation. | 10 adults had intermittent positive-pressure ventilation for 3--34 days. all 10 had paralytic ileus. microbial overgrowth in the stomach was found in 9 patients (bacterial in 7 and fungal in 2); gram-negative bacteria predominated. the trachea invariably became colonised by bacteria, mainly gram-negative organisms. in 3 instances the gram-negative bacteria were found in the stomach before they appeared in the tracheal aspirate, and in 1 case the pathogen originated in the faeces. | 1978 | 81991 |
| [differential diagnosis of enterococci]. | the most stable differential signs of enterococci are: growth in the medium at ph 10.2, growth in broth containing 40% bile, citrate utilization, resistance to 0,05% potassium tellurite, 2, 3, 5-triphenyltetrazolium chloride (ttc) reduction, the staining of colonies (plaques) on a medium with manganese, iron and zinc salts, glycerine fermentation under anaerobic conditions, mannite fermentation, the presence of hemolysin, of the proteolytic enzyme, and mobility. combined differential-diagnostic ... | 1978 | 34304 |
| association between streptococcus faecalis urinary infections and graft rejection in kidney transplantation. | in the first month after transplantation 50% of 193 consecutive renal transplant recipients had bacteriuria. the most common organisms isolated were streptococcus faecalis (34), escherichia coli (28), pseudomonas spp. (11), and staphylococcus (9). there was a significant correlation between infection with str. faecalis and graft failure at one, three, and twelve months. this observation suggests that urinary infection with str. faecalis may be associated with graft failure which is probably the ... | 1978 | 82139 |
| [method of bacteriocin typing]. | | 1978 | 82670 |
| [quaternary structure and mechanism of action of putrescine carbamoyltransferase (proceedings)]. | | 1978 | 84627 |
| streptococcus faecalis urinary-tract infection and renal-allograft rejection. | | 1979 | 86016 |
| [enterocins and their properties]. | | 1979 | 34298 |
| [changes in the number of escherichia coli, streptococcus faecalis and streptococcus faecium stored in physiological solution at a temperature of 20 degrees c]. | | 1977 | 31606 |
| effect of leukocyte hydrolases on bacteria. xiv. bacteriolytic effects of human sera, synovial fluids, and purulent exudates on staphylococcus aureus and streptococcus faecalis: modulation by cohn's fraction ii and by polyelectrolytes. | normal sera and plasma, derived from humans, calves, rats, rabbits, horses, human synovial fluids, inflammatory exudates, and leukocyte extracts, when sufficiently diluted are highly bacteriolytic for staph, aureus, strep. faecalis, b. sutilis and to a variety of gram-negative rods. on the other hand, concentrated serum or the other body fluids are usually not bacteriolytic for these bacterial species. while the lysis of staph, aureus and b. subtilis by diluted serum is not lysozyme dependent, l ... | 1979 | 92458 |
| effects of temperature on the autolytic enzyme system of streptococcus faecalis. | the cellular autolytic reaction system in streptococcus faecalis atcc 9790 was analyzed for relative increases in reaction rates with increasing temperature by determination of arrhenius activation energies (e). the systems examined were: (i) an isolated wall-enzyme complex in 0.01 m sodium phosphate, ph 6.9; (ii) exponential-phase cells suspended in 0.01 or o.3 m sodium phosphate ph 6.8, or in 0.04 m ammonium acetate, ph 6.8, (iii) growing cultures deprived of glucose or lysine; and (iv) cultur ... | 1978 | 30752 |
| microbiological measurement of folic coenzymes. ii. effect of the ph of ascorbic acid. | | 1977 | 23813 |
| characterization of bacterial l-(-)-tyrosine decarboxylase by isoelectric focusing and gel chromatography. | the purification of l-(-)-tyrosine apodecarboxylase (tad) (e.c. 4.1.1.25), obtained from extracts of cells of streptococcus faecalis, has been investigated by means of preparative isoelectric focusing, molecular sieve chromatography and hydrophobic interaction chromatography. isoelectric focusing demonstrated two separate fractions possessing enzyme activity that had pi values of 4.5 and ca. 3.2. in the chromatographic methods, however, the activity was obtained in a single peak. it was found th ... | 1978 | 96122 |
| multivalvular vegetations in a patient with enterococcal endocarditis diagnosed by echocardiography. | a patient with enterococcal endocarditis of 11 months' duration is presented, and the role of surgery and echocardiography is reviewed. echocardiography revealed vegetations of the aortic and mitral valves. after appropriate antibiotic therapy the patient had successful aortic and mitral valve replacement with porcine heterografts. enterococcal endocarditis is increasing in frequency and is likely to infect young women of childbearing age, elderly men who have had genitourinary tract manipulatio ... | 1978 | 96535 |
| acid production from lycasin, maltitol, sorbitol and xylitol by oral streptococci and lactobacilli. | the acid production from maltitol was compared with the acid production from hydrogenated starch hydrolysate (lycasin), sorbitol and xylitol by a number of oral strains and reference strains of streptococcus mutans, s. sanguis, s. salivarius, s. mitior, s. milleri, s. faecalis, s. faecium, s. avium, lactobacillus casei and l. salivarius. the polyols were added to a final concentration of 1.0% to two different basal media. incubation was performed at 37 degrees c for 7 days after which the ph was ... | 1977 | 21508 |
| plasmid-mediated mechanisms of resistance to aminoglycoside-aminocyclitol antibiotics and to chloramphenicol in group d streptococci. | genes conferring resistance to aminoglycoside-aminocyclitol antibiotics in three group d streptococcal strains, streptococcus faecalis jh1 and jh6 and s. faecium jh7, and to chloramphenicol in jh6 are carried by plasmids that can transfer to other s. faecalis cells. the aminoglycoside resistance is mediated by constitutively synthesized phosphotransferase enzymes that have substrate profiles very similar to those of aminoglycoside phosphotransferases found in gram-negative bacteria. phosphorylat ... | 1978 | 96732 |
| kinetics and equilibrium of the inactivation of ornithine transcarbamylases by pyridoxal 5'-phosphate. | | 1977 | 16927 |
| cellular lysis of streptococcus faecalis induced with triton x-100. | lysis of exponential-phase cultures of streptococcus faecalis atcc 9790 was induced by exposure to both anionic (sodium dodecyl sulfate) and nonionic (triton x-100) surfactants. lysis in response to sodium dodecyl sulfate was effective only over a limited range of concentrations, whereas triton x-100-induced lysis occurred over a broad range of surfactant concentrations. the data presented indicate that the bacteriolytic response of growing cells to triton x-100: (i) was related to the ratio of ... | 1978 | 97265 |
| aminoglycoside-inactivating enzymes in clinical isolates of streptococcus faecalis. an explanation for resistance to antibiotic synergism. | clinical isolates of enterococci (streptococcus faecalis) with high-level resistance to both streptomycin and kanamycin (minimal inhibitory concentration >2,000 mug/ml), and resistant to synergism with penicillin and streptomycin or kanamycin were examined for aminoglycoside-inactivating enzymes. all of the 10 strains studied had streptomycin adenylyltransferase and neomycin phosphotransferase activities; the latter enzyme phosphorylated amikacin as well as its normal substrates, such as kanamyc ... | 1978 | 97312 |
| use of pyruvate fermentation compared with tetrazolium reduction in the differentiation of group d streptococci. | the reduction of 2, 3, 5 triphenyltetrazolium chloride in the original medium of barnes (journal of general microbiology, 14, 57, 1956), and in a modified medium, was compared with the ability to ferment pyruvate as a means of separating streptococcus faecalis from all other group d streptococci. the tetrazolium reduction test gave an occasional negative reaction with str. faecalis strains. in addition, a number of strains gave a weakly positive reaction in the test, as did some strains of str. ... | 1978 | 97331 |
| folate antagonists. 12. antimalarial and antibacterial effects of 2,4-diamino-6-[(aralkyl and alicyclid)thio-, sulfinyl-, and sulfonyl]quinazolines. | a series of 2,4-diamino-6-[(aralkyl and alicyclic)thio-, sulfinyl-, and sulfonyl]quinazolines was prepared via condensation of 5-chloro-2-nitrobenzonitrile or 5,6-dichloro-2-nitrobenzonitrile with the appropriate aralkyl or alicyclic thiopseudourea, reduction of the resulting 2-nitro-5-[(aralkyl or alicyclic)thio]benzonitrile with stannous chloride to the amine, and cyclization with chloroformamidine hydrochloride. oxidation was effected with hydrogen peroxide or the bromine complex of 1,4-diaza ... | 1978 | 97382 |
| [sensitivity of bacteria to antibiotics. evaluation of a rapid automatic method (author's transl)]. | a rapid automated sensitivity testing system is evaluated in this report. the results have been compared with the standard disk diffusion method (ics). three hundred strains recently isolated from clinical cases : enterobacteriaceae, staphylococcus aureus, streptococci d, pseudomonas aeruginosa, have been tested. the general agreement between the two techniques was 89 p. cent. | 1978 | 97613 |
| the exchange reaction of peptides r-d-alanyl-d-alanine with d-14calanine to r-d-alanyl-d-14calanine and d-alanine, catalysed by the membranes of streptococcus faecalis atcc 9790. | under alkaline conditions, the membrane-bound dd-carboxypeptidase of streptococcus faecalis atcc 9790 catalyses exchange reactions in which the x-l-r3-d-ala moiety of peptides of the type x-l-r3-d-ala-d-ala is transferred to simple amino compounds such as d-alanine, glycine and glycyl-glycine. the enzyme system is unable, however, to catalyse complex reactions that would simulate the natural transpeptidation reaction. | 1977 | 16752 |
| [index of contamination of fecal origin in mussels (mytilus edulis) without purification of the ria de arosa]. | | 1977 | 97772 |
| transport and metabolism of vitamin b6 in lactic acid bacteria. | streptococcus faecalis 8043 concentrates extracellular 3hpyridoxal or 3hpyridoxamine primarily as the corresponding 5'-phosphates. accumulation of pyridoxamine requires an exogenous energy source and is inhibited by glycolysis inhibitors. a membrane potential is not required for transport of pyridoxamine, and an artificially generated potential does not drive uptake in this organism. based on this and other evidence, it is concluded that s. faecalis accumulates pyridoxamine by facilitated diffus ... | 1977 | 14135 |
| bacterial endocarditis on a prosthetic valve. oral treatment with amoxicillin. | a patient with endocarditis due to streptococcus faecalis on an aortic valvular prosthesis was successfully treated using large oral doses of amoxicillin concurrently with intramuscular administration of streptomycin. oral therapy was employed because of a persistent reaction to intravenously administered antibiotics. oral therapy for bacterial endocarditis occurring on an artificial valve may be attempted as a last resort when all other accepted therapeutic measures have failed. | 1978 | 98296 |
| an analysis of group d streptococci recovered from cancer patients. | | 1978 | 98452 |
| an improved method for determination of vitamin k. | | 1976 | 9016 |
| induced cell aggregation and mating in streptococcus faecalis: evidence for a bacterial sex pheromone. | recipient strains of streptococcus faecalis produce a trypsin sensitive, heat resistant, nuclease resistant factor, designated clumping-inducing agent (cia) which causes strains carrying certain conjugative plasmids to aggregate. rna and protein synthesis but not dna synthesis are required for aggregation to occur. recipient filtrates that contain cia activity also induce donors to mate at high frequencies. introduction of a transferable plasmid into strains producing cia dramatically reduces th ... | 1978 | 98769 |
| pars plana vitrectomy as a primary treatment for acute bacterial endophthalmitis. | we successfully treated six patients with culture-proven acute bacterial endophthalmitis by a combination of emergency pars plana vitrectomy and the instillation of intravitreal antibiotics. all six patients regained satisfactory vision. | 1978 | 99040 |
| the cleaning and disinfection by heat of bedpans in automatic and semi-automatic machines. | this work is concerned with the cleaning and disinfection by heat of stainless-steel and polypropylene bedpans, which had been soiled with either a biological contaminant, human serum albumin (hsa) labelled with technetium-99m 99m(tc), or a bacteriological contaminant, streptococcus faecalis mixed with tc-labelled hsa. results of cleaning and disinfection achieved with a test machine and those achieved by procedures adopted in eight different wards of a general hospital are reported. bedpan wash ... | 1976 | 6591 |
| enterococcal survival in forcemeat preserved in polymer films and in cutlets made from it. | the available data suggest that at 2 degrees and 5 degrees with a 12-day long storage in unpacked and in polymeric film packed forcemeat there occurs no propagation of the enterococci. at 22-24 degrees the multiplication of str. faecalis var. liquefaciens proceeded similarly both in packed and unpacked forcemeat. when the temperature in the central part of the cutlets prepared from the enterococci-contaminated forcemeat reaches 7-80 degrees the bulk of the str. faecalis var liquefaciens cells pe ... | 1975 | 1906 |
| prophylactic systemic antibiotics in colorectal surgery. | the prophylactic value of gentamicin combined with either lincomycin or metronidazole in 52 patients undergoing colorectal surgery was investigated. the results confirmed the value of this practice. in a control group, the sepsis-rate was 48% with 1 death attributable to sepsis, compared with a sepsis-rate of 4% in the treated group. the combination of gentamicin and lincomycin was effective against sepsis but pseudomembranous colitis developed in 2 of the 14 patients treated with this combinati ... | 1977 | 69126 |
| antagonistic interaction of rifampicin and trimethoprim. | | 1978 | 99420 |
| effect of combinations of penicillin and aminoglycosides on streptococcus faecalis: a comparative study of seven aminoglycoside antibiotics. | the 50% inhibitory concentrations (ic50) of benzylpenicillin, streptomycin, sisomicin, gentamicin, tobramycin, kanamycin, amikacin, and butirosin were determined for 58 clinical isolates of streptococcus faecalis, 28 of which were recovered from cultures of blood samples from patients with endocarditis. the ic50 of streptomycin was less than 100 microng/ml for 42 strains, 192-10,000 microng/ml for eight, and larger than or equal to 10,000 micron/ml for eight. one isolate that was highly resistan ... | 1977 | 67159 |
| effects of phenethyl alcohol on bacillus and streptococcus. | the activity of phenethyl alcohol (pea) on bacillus cereus, b. megaterium, and streptococcus faecalis was studied by electron microscopy of thin sections and by the assay of intracellular k+ leakage. s. faecalis was unaffected by pea at concentrations up to 0.5%, b. cereus was severely damaged by 0.5% pea, and b. megaterium behaved intermediately. important membrane ultrastructural alterations were observed in b. cereus cells treated with 0.5% pea, namely the change in the geometry of the membra ... | 1976 | 60333 |
| an electron microscopic study of the location of teichoic acid and its contribution to staining reactions in walls of streptococcus faecalis 8191. | the location of the glucosylated teichoic acid in whole cells and isolated walls of streptococcus faecalis 8191 has been investigated using ruthenium red, gold-labelled concanavalin a and concanavalin a-peroxidase-diaminobenzidine. dense laminae were revealed in sections of osmium-fixed walls stained with ruthenium red which corresponded to similar regions stained by uranyl and lead. such regions were not seen after teichoic acid had been extracted, suggesting that the uptake of stain was by tei ... | 1975 | 50406 |
| [penicillin-aminoglycoside synergism for streptococcus faecalis. in vitro study of aminoglycosides]. | | 1978 | 99849 |
| [an instructive case of streptococcus faecalis endocarditis]. | | 1978 | 99850 |
| phagocytosis in patients and carriers of chronic granulomatous disease. | the phagocytic capacity of leucocytes from four patients and two carriers of chronic granulomatous disease (c.g.d.) was compared to that of normal leucocytes. leucocytes from c.g.d. patients phagocytised more staphylococcus aureus than did normal leucocytes after 5, 10, and 20 minutes of incubation. phagocytosis by leucocytes from two carriers of c.g.d. was intermediate between that in the patients and in controls. in contrast, phagocytosis of streptococcus faecalis, an organism readily killed b ... | 1975 | 48723 |
| accumulation of arsenate, phosphate, and aspartate by sreptococcus faecalis. | uptake of arsenate and phosphate by streptococcus faecalis 9790 is strictly dependent on concurrent energy metabolism and essentially unidirectional. targinine supports uptake only in presence of glycerol or related substances; glycerol is not directly involved in transport but depletes the cellular orthophosphate pool and thus relieves feedback inhibition of transport. uptake of phosphate and arsenate is stimulated by k+ and by other permeant cations. the results suggest that electroneutrality ... | 1975 | 47322 |
| teichoic acids of group d streptococci with special reference to strains from pig meningitis (streptococcus suis). | immunoelectrophoresis revealed in phenol extracts from s. faecalis and s. faecium a mixture of free and lipid-bound teichoic acids, both reactive with group d antisera. in phenol extracts from s. suis only lipid-bound teichoic acid, also reactive with group d antiserum, was seen. this difference probably accounts for the low yield of group d antigen from s. suis as compared with s. faecalis and s. faecium when heating at ph 2 is used for extraction. when phenol is used good yields are obtained f ... | 1977 | 45589 |
| rapid identification and antibiotic sensitivity testing of bacteria isolated from clinical infections. | a total of 834 bacterial strains isolated from urine were subjected to rapid biochemical and serological identification and rapid antimicrobial sensitivity testing using autobac 1. for enterobacteria (742 strains) six tests (acetoin-, beta-galactosidase-, hydrogensulphide-, indole-, ornithin-decarboxylase-and urease-production) correctly identified to genus or species level more than 99% of the strains within four hours. staphylococci and streptococci (92 strains) were identified with full accur ... | 1977 | 69255 |
| effects of dispersed recreational activities on the microbiological quality of forest surface water. | the microbiological quality of forest surface waters in the greenwater river watershed was examined to investigate the influence of heavy motorized camping in an area with no sanitary facilities. indicator densities increased during weekend human-use periods when compared to weekdays. increases in indicator densities were also noted downstream from heavily used camping areas when compared to upstream sites. seasonal, weekly, and diurnal fluctuations in indicator densities were observed. this stu ... | 1978 | 100055 |
| a study of the surface-active properties of the mg2+-activated atpase from cytoplasmic membranes of streptococcus faecalis. | the surface activity and enzymic properties of the factor f1, the catalytic moiety of streptococcus faecalis h+-atpase, has been studied at the air-water and phospholipid-water interfaces. f1 does not interact with the monolayer phospholipids, hence its adsorption on a biological membrane must be due mainly to its recognition of proteins of the hydrophobic complex. the dimensions of the f1 molecule at the air-water interface have been estimated. in the presence of mg2+, base area is s = 1.8 . 10 ... | 1979 | 39596 |
| [modification of the method of bacteriological diagnosis of intestinal dysbacteriosis]. | | 1977 | 71381 |
| a new hydrolase specific for taurine-conjugates of bile acids. | through the investigation of the bile acid-deconjugation activities of human intestinal anaerobes, a new enzyme was discovered in peptostreptococcus intermedius which hydrolyzed specifically the taurine-conjugates, but not the glycine-conjugates of bile acids. however, the enzymes in streptococcus faecalis and lactobacillus brevis hydrolyzed chiefly the glycine-conjugates. | 1978 | 100491 |
| chemical modification peptide antibiotics: part vii--synthetic peptides with sequences from gramicidin b & c. | | 1977 | 72723 |
| [characteristics of enterococci isolated from the pharynx, urine and the genital organs of pregnant women]. | | 1978 | 75300 |
| cerebral arterial lesions resulting from inflammatory emboli. | in order to study the effects of septic embolism on the brain, silicone rubber emboli of various types were injected into the carotid arteries of 35 dogs. pathologic and angiographic studies were performed to assess the resultant arterial and parenchymal lesions. pure silicone rubber emboli (14 dogs) produced occasional intra-arterial thrombosis but no arteritis. sterile and bacterially contaminated emboli containing a lead-chromate pigment (similar to those used in previous studies of septic em ... | 1978 | 100907 |
| enterococcal endocarditis: duration and mode of treatment. | this report summarizes data on sixteen patients with enterococcal endocarditis treated with penicillin and streptomycin. the experience reported suggests that a four week period is adequate for routine therapy in these patients, as in other forms of streptococcal endocarditis. it provides an additional group of patients successfully treated with penicillin and streptomycin. two relapses were encountered. one of these received inadequate daily doses of penicillin. the other patient was clearly a ... | 1978 | 100924 |
| catheter-associated urinary-tract infections. | | 1978 | 82043 |
| interaction of a bivalent ligand with igm anti-lactose antibody. | | 1979 | 87219 |
| [prevention of bacterial endocarditis]. | | 1978 | 101706 |
| experimental renal infection: acute and chronic studies of histology and function. | experimental renal infections have resulted in histologic lesions of acute and chronic pyelonephritis, but in most studies the urinary tract has been "traumatized" to induce persistent infection. sequential functional alterations have been measured infrequently. the present studies were designed to separate the functional and histological changes caused by high pressure sterile reflux from reflux with pathogenic organisms. reproducible disruption of the pelvic epithelium with extravasation of so ... | 1978 | 101708 |
| studies on virus-inhibiting substances of bacterial origin. iv. antiviral substances extractable from streptococcus faecalis: its in vivo effect. | | 1978 | 101714 |
| studies on virus-inhibiting substances of bacterial origin. i. introduction. | | 1978 | 101715 |
| studies on virus-inhibiting substances of bacterial origin. ii. inhibition of animal virus plaque formation by culture filtrates of lactic acid bacteria. | | 1978 | 101716 |
| a rapid bioassay method for gramicidin by measuring rubidium ion leakage from streptococcus faecalis. | | 1979 | 91602 |
| effect of diet on adhesion and invasion of microflora in the intestinal mucosa of chicks. | | 1978 | 101987 |
| [the etiology of foul brood]. | five hundred and thirty-six samples of honeycombs were examined in a laboratory in the years 1971-1974. in all the samples clinically determined as the foul brood, b. alvei was isolated as a pure culture, and enterococci, or both microorganisms were isolated in mixed form. twenty-five strains of the isolated streptococci were analyzed microbiologically and biochemically; on the basis of their culture and biochemical characteristics five strains were designated as streptococcus faecalis, 14 strai ... | 1978 | 102071 |
| quantitative assessment of bactericidal activities of beta-lactam antibiotics by agar plate method. | quantitative bactericidal activities of beta-lactam antibiotics were determined by the agar plate method. broth cultures, of which the colony-forming units were counted before the study, were inoculated on antibiotic-containing agar plates, utilizing a 10(-3), 10(-2), or 10(-1) dilution or undiluted culture plated with each 0.001-ml calibrated loop. these plates were incubated at 37 degrees c overnight, and the minimal drug concentration at which no bacterial growth was observed on the plates wa ... | 1978 | 102246 |
| non-group d streptococcal meningitis misidentified as enterococcal meningitis. diagnostic and therapeutic implications of misdiagnosis by screening microbiology. | two patients had nonhemolytic gram-positive coccal meningitis. both pathogens were initially misidentified as a group d enterococcus by growth in "selective" media, which led to the use of inappropriate and potentially toxic systemic and intrathecal aminoglycosides. careful evaluation of the antibiotic sensitivity data and additional microbiological studies allowed correct identification of the organism. the important diagnostic and therapeutic considerations in differentiating true enterococcal ... | 1978 | 102268 |
| relationship between cellular autolytic activity, peptidoglycan synthesis, septation, and the cell cycle in synchronized populations of streptococcus faecium. | synchronized, slowly growing (td = 70 to 80 min) cultures were used to study several wall-associated parameters during the cell cycle: rate of peptidoglycan synthesis, septation, and cellular autolytic activity. the rate of peptidoglycan synthesis per cell declined during most of the period of chromosome replication (c), but increased during the latter part of c and into the period between chromosome termination and cell division (d). an increase in cellular septation was correlated with the inc ... | 1978 | 96095 |
| [experiences with the uripret-system in pediatric practice (author's transl)]. | the present study reports on the application of the uripret-system for identification and susceptibility testing of microbial agents causing urinary tract infections carried out in a pediatric outpatient clinic. the findings were compared with those determined with the conventional methods in an institute of medical microbiology. for the detected mono- and mixed-cultures, in 85% of the cases a concurrent result of both methods was found. only in one case a different microbial agent genus was det ... | 1979 | 102911 |
| damage and recovery in streptococci. | | 1978 | 103202 |
| susceptibility of the anaerobic bacteria, group d streptococci, enterobacteriaceae, and pseudomonas to semisynthetic penicillins: carbenicillin, piperacillin, and ticarcillin. | sodium piperacillin t-1220, a new semisynthetic penicillin, was tested in vitro against 297 clinical isolates of anaerobic bacteria and 669 aerobic bacteria by the conventional agar dilution method and compared with carbenicillin and ticarcillin. at a 100-mug/ml concentration the three drugs showed comparable effectiveness against the anaerobes tested. however, at 20 mug/ml, piperacillin was the most effective drug against bacteroides fragilis, peptostreptococci, and group d streptococci. at thi ... | 1978 | 103491 |
| oligosaccharides and polysaccharides specifically utilizable by bifidobacteria. | | 1978 | 103638 |
| approximation of the cell cycle in synchronized populations of streptococcus faecium. | slowly growing populations (td = 70 to 80 min) of streptococcus faecium (s. faecalis atcc 9790) were synchronized by selection after sucrose gradient fractionation. the cell cycle was approximated by correlating the patterns of dna accumulation and cell division. more specifically, the beginning of cell cycle was equated with the beginning of a rapid linear increase in dna accumulation. the dna content of the culture approximately doubled during the period of accumulation, which lasted about 51 ... | 1978 | 96099 |
| comparison of eight media-procedures for recovering faecal streptococci from water under winter conditions. | | 1978 | 103873 |