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[response of salmonella typhi and s. paratyphi b strains from the years 1968/70 and 1974 to antibiotics]. 1975235717
natural antibodies in healthy adults.the serum of 100 adults living in budapest was examined for isohaemagglutinin titre with haemaglutination, for staphylococcal-antitoxin titre with haemolysis inhibition and for bacterial antibody titre against 17 different groups of bacteria with passive haemagglutination. antibody levels in males, except for certain bacterial antibodies, were somewhat lower than in females. the antibody titres, especially in men, decreased gradually from 20 to 50 years of age and were usually lower in rh negati ...1975235827
molecular immunological heterogeneity of the salmonella zuerich [1, 9, 12, (46), 27] cell-wall polysaccharides.extraction of o specific polysaccharide from s. zuerich leads to three fractions (za, zb, zc). polysaccharide zb carries specificities 1, 27, and 46, present on the salmonella cells. it exhibits a factor 27 that is very similar to that present on the s. typhi t2 1-minus 27-+ polysaccharide, a factor 1 that is close to that present on s. senftenberg polysaccharide, and a factor 46 that gives a very weak cross-reaction with anti-46 antibodies. polysaccharides za and zb are immunologically differen ...1975236091
accelerated host metabolism of l-thyroxine during acute infection: role of the leukocyte and peripheral leukocytosis.metabolism of thyroid hormones is accelerated during acute infection in man and in experimental animals. the pathogenetic mechanisms mediating this phenomenon are uncertain, but activated leukocytes of the infected host have been implicated as potentially important sites of hormone degradation. the present studies were conducted in an attempt to assess the in vivo contribution of leukocytes and peripheral leukocytosis to the enhancement of l-thyroxine (t4) clearance seen during infection, and to ...1975236322
deoxyribose-5-phosphate aldolase from salmonella typhimurium. 1975237187
[comparative study of the vi-typhin test passive hemagglutination reaction for detection of vi-antibodies in the blood serum and its practical significance]. 1975237378
salmonella infection of ovarian dermoid cyst. 1975237598
a unique reactive residue in adenosine triphosphate phosphoribosyltransferase sensitive to five conformation and dissociation states.adenosine triphosphate phosphoribosyltransferase is inactivated rapidly by bulky alkylating reagents in a biphasic reaction. the initial inactivation rate is dependent upon an optimal concentration of histidine and is more rapid at low enzyme concentrations and low ionic strength. a histidine-free dimer form of the enzyme is the proposed reactive species. the dimer is shown by ultraviolet difference spectroscopy to bind histidine about 1 order of magnitude more weakly than the hexameric form ...1975237926
typhoid and paratyphoid fevers--report on incidences in 1973 and results of classification of isolated organisms]. 1975237968
a new selective medium for the isolation of salmonellae other than salmonella typhi.a medium consisting of a macconkey's base with added magnesium, calcium, cobalt, zinc, thiosulphate, novobiocin, iron dextran, tween 80 and edta has been found highly selective for salmonellaparatyphi b and most of the food poisoning salmonellae that commonly occur in britain. nearly all the normal faecal flora is inhibited.1975238037
standardisation of the nitroblue-tetrazolium test.optimal conditions for the nbt-reduction test have been sought. increasing heparin concentrations up to 100 units per ml and a delay in performance of the test, especially when blood specimens are kept at room temperature, resulted in higher values for the nbt index, which then sometimes exceeded the upper limit of normal in healthy people and in uninfected patients. the effect of ph, composition of the buffer, and dye concentration was also investigated. phosphate-buffered saline ph 7-2 contain ...1975238038
a comparative evaluation of the treatment of typhoid fevers with co-trimoxazole and chloramphenicol in egypt.seventy-two patients with bacteriologically proven enteric fever were treated with either co-trimoxazole (41 cases) or chloramphenicol (31 cases). c0-trimoxazole was found to be superior to chloramphenicol in relieving the toxaemia. the average number of days required for patients to become afebrile was 5-5 days in the co-trimoxazole group and 4-5 days in the chloramphenicol group. the cure rate was 97 per cent in each of the treatment groups. there occurred two relapses in the co-trimoxazole gr ...1975238046
the use, misuse, and abuse of antibacterial agents. 1975238127
isolation and structure assignment of an antimicrobial principle from the volatile oil of nigella sativa l. seeds.refrigeration of the volatile oil of nigella sativa l. seeds eventuates in a crystalline substance. the chemical structure of the compound was drawn from its chemical behaviour, as well as from its uv, ir, pmr and mass spectral data. the compound was found to be thymohydroquinone: confirmation of the structure was established via the preparation of its corresponding diacetate ester. the compound was found to have high antimicrobial effect against gram positive microorganisms1975238225
inhibition of pathogenic enteric bacteria by hyperbaric oxygen: enhanced antibacterial activity in the absence of carbon dioxide.the antibacterial effects of 24-h exposures to high-pressure oxygen in relation to environmental co(2) were studied at 3 atm absolute (ata) and at 1 ata. eight gram-negative, aerobic and facultatively aerobic, pathogenic enteric bacteria (salmonella typhosa, salmonella paratyphi, salmonella schottmuelleri, shigella dysenteriae, shigella flexneri, proteus vulgaris, pseudomonas aeruginosa, and escherichia coli) were exposed as shallow-broth cultures and agar surface cultures. although broths suppl ...1975238466
transplantation in severe combined immunodeficiency disease with hl-a identical bone marrow.the immunologic reconstitution of 7 patients with severe combined immunodeficiency disease was attempted with bone marrow transplantation from histoidentical donors. four patients were successfully reconstituted and discharged from the hospital. two patients died with sepsis. one patient died from a preexisting neurologic disease. all the patients who have been successfully reconstituted have had some degree of graft-vs-host disease. a dose of 50 x 10(6) nucleated bone marrow cells per kg seems ...1975238684
[treatment of healthy salmonella carriers with lactulose beta-galactosido-fructose (author's transl)].oral administration of lactulose (beta-galactosido-fructose) of 25 healthy salmonella carriers cured 21, but failed in four.1975238823
a new parenteral cephalosporin. sk&f 59962: in vitro and in vivo antibacterial activity and serum levels in experimental animals.sk&f 59962, a new parenteral cephalosporin was found to have a high order of in vitro and in vivo antibacterial activity against a broad-spectrum of clinical isolates. when tested in vitro against gram-negative organisms, sk&f 59962 was consistently more active than cefazolin and far superior to cephalothin. this new antibiotic had activity equal to that of cephalothin against gram-positive bacteria. enterobacter species were found to be susceptible to sk&f 59962. in mouse infection studies usin ...1975238925
antimicrobial properties of mannopeptins.mannopeptins show in vitro antimicrobial activity against gram-positive and some gram-negative bacteria. the antimicrobial activity is unaffected by the addition of serum, and potentiated by alkaline ph or decrease in inoculum size. the antibiotics exert bectericidal effect at doses twice as high as the minimum inhibitory concentration. when the antibiotics were injected into mice through either intravenous, intraperitoneal, intramuscular or subcutaneous routes, the antimicrobial activity appear ...1975238926
mutations affecting glutamine synthetase activity in salmonella typhimurium.a positive selection procedure has been devised for isolating mutant strains of salmonella typhimurium with altered glutamine synthetase activity. mutants are derived from a histidine auxotroph by selecting for ability to grow on d-histidine as the sole histidine source. we hypothesize that the phenotype may be based on a regulatory increase in the activities of the d-histidine racemizing enzymes, but this has not been established. spontaneous glutamine-requiring mutants isolated by the above se ...1975238935
gene order of the histidine utilization (hut) operons in klebsiella aerogenes.p1-sensitive mutants of klebsiella aerogenes were isolated and the gene order of the hut region was then determined using p1-mediated transduction. the genes are located in the klebsiella chromosome between gal and bio as in salmonella typhimurium. the gene order, gal, huti, hutg, hutc, huu, huth, bio is also the same as that observed in s. typhimurium.1975238937
regulation of catalase synthesis in salmonella typhimurium.the specific activity of catalase in salmonella typhimurium and other enteric bacteria decreased during the logarithmic phase of growth and increased at the onset and during the stationary phase. the increase in catalase synthesis at the end of the exponential phase in s. typhimurium cells coincided with the lowest ph value reached by the culture. maintenance of the ph at a constant neutral value did not alter the typical pattern of synthesis in contradiction of the results previously reported ( ...1975238955
a transport system for phosphoenolpyruvate, 2-phosphoglycerate, and 3-phosphoglycerate in salmonella typhimurium.salmonella typhimurium strain lt-2 was found to utilize phosphoenolpyruvate, 2-phosphoglycerate, and 3-phosphoglycerate as sole sources of carbon and energy for growth, but escherichia coli strains did not. the following evidence suggests that this growth difference was due to the presence in salmonella cells of an inducible phosphoglycerate permease distinct from previously studied transport systems: (a) the ability of cells to take up 3-phospho[14-c]glycerate was induced by growth in the prese ...1975238977
an investigation into the potential hazard to animal health of effluent sludge from dairy factories.sixty-three samples of the more solid material (sludge) separated from the effluent plants of dairy factories were examined for the presence of salmonellas and brucellas. salmonellas were isolated from two samples (s. heidelberg. [1]; s. indiana [1]. no brucellas were isolated. none of the samples supported the growth of s. dublin. salmonellas added to effluent sludge at a concentration of 10(6) organisms/ml. survived less than 70 days. the sludge from dairy factory effluent plants does not appe ...1975239054
relation of structure to function in bacterial endotoxins. viii. biological activities in a polysaccharide-rich fraction.this is the first report describing in vivo biologic activities elicited by a non-toxic, polysaccharide-rich, water soluble fraction obtained by partial acidic hydrolysis from endotoxic lipopolysaccharide. the two activities present in this preparation were a) mouse bone marrow cell colony formation stimulation (csf) and b) protection of mice against lethal irradiation. with polysaccharide-deficient rough mutants of salmonella minnesota, the csf-inducing activity could be restricted to the "core ...1975239055
activation by some t-independent antigens and b cell mitogens of the alternative pathway of the complement system.a number of t-independent antigens and b cell mitogens were examined for their ability to activate c3 via the alternative pathway of the complement system. loss of hemolytically active c3, generation of anaphylatoxin activity, and immunoelectrophoretic conversion of c3 and factor b, were checked in normal and c4-deficient guinea pig serum, and, in some cases, in normal human serum. as judged by their activity in these assays, 10 lipopolysaccharides of different origin and constitution, pneumococ ...1975239062
difference in b cell mitogen responsiveness between closely related strains of mice.spleen cells from c3h/hej mice respond very poorly to the mitogenic action of endotoxin (lps) in vitro whereas cells from a very closely related strain, c3h/hen respond very well. an analysis of the genetic similarity of these two strains was performed. there is no significant mlr measurable between cells of these strains under a variety of culture conditions. they do not manifest a significant graft-vs-host response nor do they reject reciprocal skin grafts. because of this genetic similarity, ...1975239063
biochemically aberrant salmonella enteritidis ser. newington from human sources in connecticut. 1975239492
[development of new types of chemical vaccine for prevention of intestinal infections and problems of their qualitative evaluation. iii. comparative study of immunologic characteristics of experimental antigenic preparations].as a result of comparative study of the immunological properties and antigenic activity of thyphoid, paratyphoid a and b and sonne and flexner dysentery antigenic preparations obtained by various methods there was revealed a decreased toxicity of the experimental preparations of the tashkent and leningrad institute of vaccines and sera (in comparison with the tryptic antigens) and a considerable advantages of the experimental thyphoid and paratyphoid antigenic preparations by their capacity to i ...1975239506
nephrotic syndrome in schistosomiasis mansoni complicated by chronic salmonellosis.thirteen patients with concomitant chronic salmonellosis and schistosomiasis and with the nephrotic syndrome were studied. of the seven patients' sera examined, all had markedly low complement c3 and near normal c4 levels. this indirectly suggests an active role of salmonella endotoxin in the etiology of the nephrosis.1975239605
recurrent wound sinuses after cholecystectomy for salmonella paratyphi.several cases in which salmonella, spread by the haematogenous route, produced localised inflammation have previously been described in the literature. the infecting of an operation wound through direct contamination by salmonella has earlier been reported only once, in connection with appendectomy. the present case report describes a case in which recurrent sinuses infected by salmonella were formed in the operative wound.1975239621
1-alkyl-2-nitroimidazol-5-yl derivatives ii. n-substituted nitrones. 1975239726
comparative inhibitory activity of bl-s640 and two other cephalosporins.in vitro antibacterial activity of bl-s640 was compared to that of cephalothin and cephalexin against gram-negative and gram-positive bacteria isolated from clinical specimens. bl-s640 demonstrated the best activity on nearly all microbial species studied, except for haemophilus influenzae and diplococcus pneumoniae against which cephalothin was slightly more active.1975239917
soluble and membrane-bound aspartate-binding activities in salmonella typhimurium.the specificities of the soluble and membrane aspartate-binding activities were compared with each other and with the specificity of aspartate chemotaxis and were found to be distinct. the soluble aspartate-binding protein was purified to homogeneity and had a molecular weight of 30,000. the dissociation constant was 10(-6) m for aspartate, and the protein bound glutamate, cysteic acid, and 2-amino-3-phosphonopropionate. aspartate transport was inhibited by cysteic acid.1975239919
derepressed levels of glutamate synthase and glutamine synthetase in escherichia coli mutants altered in glutamyl-transfer ribonucleic acid synthetase.the levels of glutamate synthase and of glutamine synthetase are both derepressed 10-fold in strain jp1449 of escherichia coli carrying a thermosensitive mutation in the glutamyl-transfer ribonucleic acid (trna) synthetase and growing exponentially but at a reduced rate at a partially restrictive temperature, compared with the levels in strain ab347 isogenic with strain jp1449 except for this thermosensitive mutation and the marker aro. these two enzymes catalyze one of the two pathways for glut ...1975239924
[bacterial populations and nucleic acids]. 1975240239
regulation of the ammonia assimilatory enzymes in salmonella typhimurium.the regulation of glutamate dehydrogenase (ec 1.4.1.4), glutamine synthetase (ec 6.3.1.2), and glutamate synthase (ec 2.6.1.53) was examined for cultures of salmonella typhimurium grown with various nitrogen and amino acid sources. in contrast to the regulatory pattern observed in klebsiella aerogenes, the glutamate dehydrogenase levels of s. typhimurium do not decrease when glutamine synthetase is derepressed during growth with limiting ammonia. thus, it appears that the s. typhimurium glutamin ...1975240804
[on sensitivity test of dibekacin by the disc method (author's transl)]. 1975240956
[study of the mutagenic activity of mazheptil].mutagenic activity of the psychotropid drug--majeptil was studied. majeptil does not induce gene mutations on salmonella typhimurium and chromosomal aberrations in mice bone marrow cells in vivo. it is shown that majeptil increase the level of chromosome aberrations in the culture of human peripheral blood lymphocytes. it is also active in the dominant lethal test on mice.1975241146
[synthetic medium for testing of susceptibility. ii. susceptibility of bacteria to sulphonamides (author's transl)].a comparative study of 9 media for testing the susceptibility of bacteria to 7 sulphonamides has been carried out. the evaluated culture-media included 4 "mueller hinton" media (mh), 4 others based on the formula of the "diagnostic sensitivity test" agar base (d.s.t.) and a "synthetic medium" (sm) which has been developed in our laboratory. mh and d.s.t. culture-media have been supplied by 4 manufacturing companies in europe and usa. a total number of 21 bacterial cultures have been employed. th ...1975241178
abnormal forms of bacteria produced by antibiotics.subinhibitory concentrations of antibiotics can produce in vitro aberrant forms of bacteria that are similar to those observed in specimens and cultures from patients being treated with antibacterial agents. eight species of bacteria were grown on membranes placed on agar containing subinhibitory concentrations of nine antibiotics. the resulting organisms were examined by gram stain and electron microscopy. gram stains showed filamentous and granular forms of enterobacteria with bipolar staining ...1975242211
an outbreak of salmonellosis among angus cows in west virginia. 1977243335
[prevention of salmonellosis in therapeutic institutions]. 1977244734
incidence of resistance to ampicillin, chloramphenicol, kanamycin and tetracycline among salmonella species isolated in the netherlands in 1972, 1973 and 1974.the resistance of salmonellae to drugs has been studied in the netherlands since 1958. in 1972, 1973, and 1974 respectively, 14241, 13086, and 22927 strains were tested for resistance to ampicillin, chloramphenicol, kanamycin and tetracycline. from 1973 all strains were also tested for resistance to trimethoprim. in the period covered, the yearly incidence of resistance to at least one of the above drugs ranged from 39.2% to 45.6% of all strains obtained from various sources (humans, animals, an ...1977245264
[outbreak of salmonella poona (g group) infection resistant to high concentrations of ampicillin, chloramphenicol, and other antimicrobial agents].an epidemic that occurred at the hospital infantil de méxico is reported. salmonella poona (roup g) was isolated in 154 patients: 122 in stool cultures, 23 in blood cultures and 9 in meningitis; out of the latter, 6 were newborns under 2 months of age. the strain showed resistance to several antibiotics: ampicillin, chloramphenicol, gentamicin, kanamycin, tetracycline, carbenicillin, cephalosporine, streptomycin and sulfonamides. seventy per cent of the strains were resistant to 500 mcg/ml (high ...1978245308
[spectrum of pathogens and therapie of septicemias in infants (author's transl)]. 1978246483
cefuroxime, a beta-lactamase-resistant cephalosporin with a broad spectrum of gram-positive and -negative activity.the in vitro activity of cefuroxime, a cephalosporin antibiotic, was investigated against 604 isolates and compared with the activity of other beta-lactam compounds. cefuroxime had activity comparable to that of other cephalosporins, including cefamandole and cefoxitin, against streptococcal and staphylococcal species; most streptococci were inhibited by 0.1 mug or less per ml, and staphylococci were inhibited by 1.6 mug or less per ml. enterococci were relatively resistant. cefuroxime inhibited ...1978248268
[salmonellosis - diagnostic and therapeutic aspects (author's transl)]. 1978252072
[general aspects of microorganisms. 2. food hygiene]. 1978252179
resistance to chloramphenicol and ampicillin salmonella johannesburg in hong kong: observations over a five-year period 1973-1977.salmonella johannesburg has been prevalent in hong kong since 1973 and most strains were resistant to a multiplicity of antibiotics. the susceptibility of s. johannesburg strains isolated in a 5-year period from 1973 to 1977 to eight antimicrobial drugs including ampicillin (a), streptomycin (s), tetracycline (t), chloramphenicol (c), kanamycin (k), sulphadiazine (su), trimethoprim (tm) and gentamicin (g) was tested by the agar dilution method. the proportion of strains resistant to chlorampheni ...1978252536
hr 756, a highly active cephalosporin: comparison with cefazolin and carbenicillin.hr 756, a new parenteral cephalosporin, was compared with cefazolin and carbenicillin for activity against a total of 264 strains of pseudomonas aeruginosa, escherichia coli, klebsiella spp., proteus mirabilis, proteus spp. (indole positive), enterobacter spp., salmonella typhi, serratia marcescens, providencia stuartii, and staphylococcus aureus. in every comparison, except that with the last organism, hr 756 was clearly more active than cefazolin and carbenicillin. all three compounds had simi ...1978253572
containment of salmonellosis in a baby ward: barrier nursing using an isolator tent. 1979255241
comparative activities of ampicillin, epicillin and amoxycillin in vitro and in vivo.the antibacterial activities of three aminopenicillins ampicillin, epicillin and amoxycillin were compared in vitro and in vivo. the minimum inhibitory concentrations (mic) of the three penicillins were very similar and the compounds were active against non-beta-lactamase-producing strains of escherichia coli, salmonella and shigella species, proteus mirabilis, haemophilus influenzae and neisseria gonorrhoeae. streptococci including streptococcus faecalis, and non-beta-lactamase-producing staphy ...1979256524
typhoid fever resistant to furazolidone, ampicillin, chloramphenicol and co-trimoxazole. 1979256555
typhoid fever 1979--a new perspective on an old disease. 1979258244
layman's guide to common complaints. 11. food poisoning. 1979258422
[main features of salmonellosis incidence and prevention]. 1979258614
[transferable antibiotic resistance of salmonellae isolated at the novara general hospital in 1977].of 74 strains of salmonella isolated by the laboratory of microbiology of the hospital of novara in 1977 and belonging to 20 different serotypes, transfer of antibiotic-resistance, mostly multiple (streptomycin, chloramphenicol, kanamycin, tetracycline, ampicillin) has been detected in 78,5% of 28 antibiotic-resistant strains. as in previous investigations made by the same laboratory, the highest percentages of transfer of resistance have been observed in some serotypes (s. typhi murium, s. pana ...1979258636
characterization of r-plasmids coding for ampicillin resistance from salmonella species.a sudden increase in the incidence of ampicillin resistance was observed among salmonella species isolated within new zealand in 1973--4. this increase was due mainly to the apperance and proliferation of salmonella newington and salmonella anatum serotypes resistant to ampicillin. the plasmid complements of 14 ampicillin-resistant s. newington and s. anatum isolates obtained from widely separated geographical areas within new zealand between 1973 and 1974 were characterized by agarose gel elect ...1979258658
[sexually transmitted intestinal diseases: viral hepatitis, amebiasis, shigellosis and salmonellosis]. 1978258855
[prevention of food poisonings]. 1979259523
[salmonellosis in children]. 1979260993
trimethoprim-sulphamethoxazole treatment in premature infants with salmonella infection. 1979262063
biologic properties of lyophilized live typhoid vaccine strains. 1979262514
evaluation of a live salmonella choleraesuis vaccine by intranasal challenge.weaned pigs were immunised with a live attenuated salmonella choleraesuis vaccine. the protective immunity induced was compared with that of unvaccinated pigs by intranasal challenge with a field strain of s choleraesuis. of 18 unvaccinated pigs, three died as a result of challenge from s choleraesuis and 10 of the survivors developed chronic lung lesions. none of the vaccinated pigs died as a result of challenge and two only showed macroscopic evidence of salmonellosis on autopsy three weeks af ...1979262604
[salmonella carriers among slaughter animals]. 1979262687
[stool culture. evaluation of technics of salmonellosis diagnosis].with a view to standardizing diagnostic methods in our country, we have attempted to evaluate the techniques for isolating salmonella, more particularly s. typhi, by stool culture. the various factors influencing the isolation rate of these organisms are studied, i.e.: the mode of sampling, the components of media for both isolation and enrichment, and subcultures. a scheme for isolation of salmonella from stools is proposed.1978262960
[technic for the detection of salmonella in dehydrated food-stuff]. 1978262971
[methods for the detection of salmonella in water adapted to the particular case of salmonella typhi]. 1978262972
[problems of variability of mueller-hinton medium for sensitivity testing. some parameters and an attempt to standardize sensitivity of salmonella typhi].the incidence of some so-called "mueller-hinton medium" for sensitivity testing on the growth of bacteria (especially s. typhi) and on the drug activity are evaluated here. the role of the quality and amount of ingredients : peptone, agar and starch are emphasized. an improved medium is proposed : tryptophane is added to compensate the casein hydrolysate deficiency for s. typhi growth.1978262973
[evolution of the repartition of enteropathogenic enterobacteria serotypes isolated in algeria from 1974 to 1977].the authors survey the enteropathogenic enterobacteria studied from 1974 to 1977 and draw the following conclusions : s. typhi is still the predominant serotype. among salmonella, other than s. typhi and s. paratyphi, s. wien remains the most frequently reported serotype while progressively decreasing from 1974 to 1976 and is supplanted by s. infantis in 1977. among the 847 strains of shigella examined, a high frequency of shigella flexneri is noted with shigella sonnei following by a wide margi ...1978262974
salmonella serotyping by the coagglutination method using protein a rich staphylococcus sensitized with specific antibody. 1979263424
hospital salmonella johannesburg infection and its possible role in the community spread of the infection in hong kong.salmonella johannesburg (1, 40: b: e, n, x), a previously rare salmonella serotype, has established itself rapidly as an important and highly prevalent cause of gastroenteritis among children. the clinical features of the infection are usually mild but chronic. it has been suggested that s. johannesburg was introduced into hong kong through imported foods but no common vehicle could be traced as the source of infection. a thorough investigation of one paediatric ward in a general hospital reveal ...1977264495
salmonella dublin infection in adult cattle: a slaughter house and knackery survey in south west wales.a survey was carried out between june 1970 and december 1971 in which gall bladders from cattle either slaughtered for food consumption or disposed of through knackeries were cultured for salmonellas. salmonella dublin was isolated from 28 of 1917 gall-bladders of adult cattle killed in the slaughterhouse at carmarthen, and from 23 of 197 gall-bladders obtained from adult cattle sent to a knackery at abergwili, near carmarthen. the results are compared with a similar survey carried out in 1947 a ...1977264496
bacterial flagella rotating in bundles: a study in helical geometry.bacterial flagella are semi-rigid helices that undergo true rotation. in peritrichously flagellated bacteria (e.g., escherichia and salmonella) there are many flagella on each cell; during translational cell movement these operate as a coordinated bundle that actively disperses upon reversal of the rotation sense. the dynamic behavior of a set of helices originating on separate rotational axes is explored by a working model, geometrical analysis, and hydrodynamic calculations. a critical relatio ...1977264676
salmonella in pig carcasses for human consumption in hong kong: a study on the mode of contamination.a very high proportion (75%) of the pigs slaughtered in hong kong were found to be infected with salmonellas. seven serotypes including salmonella choleraesuis were isolated but the majority (91%) were s. anatum and s. derby. these serotypes, especially s. anatum and s. derby, had been isolated frequently from clinical cases, symptomless carries and in this study from abattoir workers, suggesting that the pig was a significant source for human salmonella infection. the majority of pigs slaughter ...1977265345
salmonella serotypes, salmonella typhi phage types, and anti-microbial resistance at the university hospital of the west indies, jamaica.bacteriologically proved cases of salmonellosis presenting at the university hospital have increased nearly threefold since 1957. the most striking change has been a considerable increase in the incidence of salmonella heidelberg and salmonella derby in the last 5 years, probably resulting from hospital acquired infection. about 80 cases of typhoid fever are reported each year in jamaica. there has been little change in the prevalence of different phage types of salmonella typhi since 1961. para ...1977267669
landry-guillain-barré-strohl syndrome in typhoid fever.a case is described of a 15-year-old girl who developed landry-guillain-barré-strohl syndrome (lgbss) on the ninth day of typhoid fever. in the absence of other known cause or association of lgbss salmonella typhi is believed to be aetiologically related. the patient recovered uneventfully from her neurological illness in about ten weeks from onset of symptoms.1977269693
a standard technique for the isolation of salmonella from animal feeds.two trials were carried out by 9 and 47 laboratories to evaluate the reproducibility and sensitivity of a standard technique for the isolation of salmonellas from animal feeding stuffs. the trials involved the examinations of test samples containing known numbers of salmonellas by a buffered peptone water pre-enrichment technique. statistical analysis of the results of the trials showed that the method was capable of detecting salmonellas in most probable numbers as low as 2.3 per 100 g and that ...1977270528
diphtheria toxin has the properties of a lectin.the inhibition of protein synthesis in chinese hamster v79 cells by diphtheria toxin is antagonized by the lectins concanavalin a, succinylated concanavalin a, and wheat germ agglutinin but not by proteus vulgaris phytohemagglutinin or abrus agglutinin. the effects of concanavalin a and wheat germ agglutinin are reversed by methyl alpha-mannoside and n-acetylglucosamine, respectively. the inhibition of diphtheria toxin as a function of concanavalin a concentration fits a model of competitive inh ...1978272642
transposition of plasmid dna segments specifying hydrocarbon degradation and their expression in various microorganisms.the conjugative tol plasmid (75 mdal), specifying biodegradation of xylenes, toluene, and trimethylbenzene derivatives, undergoes dissociation in pseudomonas aeruginosa pao to a nonconjugative tol(*) plasmid (28 mdal) and a transfer plasmid termed toldelta (48 mdal). the tol(*) plasmid is rendered transmissible through introduction of a number of conjugative plasmids such as factor k, cam, and toldelta but not by the fp2 derivative pr0271. transfer of tol(*) via factor k or toldelta is mediated ...1978277912
[susceptibility of salmonella typhi to cloramphenicol and other antibiotics. 1st chilean multiresistent strains]. 1977279064
[a new type of salmonella isolated in chile: s. santiago (8, 20: c: e, n,x)]. 1977279065
incorporation of lipid vesicles by salmonella. 1978279289
dexamethasone antagonism of glucose dyshomeostasis in endotoxin shock.dexamethasone acetate (100 microgram ip) protected male holtzman rats (300-330 gm) against endotoxin shock due to salmonella enteritidis lipopoly-saccharide b iv. endotoxin (5.0 mg/rat) produced hypoglycemia within 180 minutes, ie, plasma glucose fell from 87 to 24 mg/dl; dexamethasone prevented the hypoglycemia, ie, plasma glucose levels were 129 mg/dl at 180 minutes after endotoxin. dexamethasone antagonized both endotoxin-induced depression of hepatic gluconeogenesis and enhanced glucose oxid ...1978280423
salmonella infection complicating bronchoalveolar carcinoma. 1978281534
food-borne disease. 1978281538
related r plasmids in salmonella typhi strains isolated in mexico city from clinical samples. 1977283474
recent trends in salmonella and shigella in new york city and at kings county hospital. 1979283866
[transfer resistance factor to antibiotics in enterobacteriaceae with special reference to salmonella typhi]. 1977284546
carcinogenicity test of six nitrosamides and a nitrosocyanamide administered orally to rats.six nitrosamides [ethylnitrosourea (enu), 2-hydroxyethylnitrosourea (henu), carboxymethylnitrosourea, 1-nitroso-5,6-dihydrouracil (ndhu), 1-nitrosohydantoin, and n-methyl-n-nitrosobenzamide (mnb)] and ethylnitrosocyanamide (enc) were administered chronically in sodium citrate-buffered drinking water to mrc wistar rats. enu induced tumors of the reticuloendothelial system (res) (50% incidence), mammary glands, and large intestine. ndhu in drinking water produced hepatocellular carcinomas (96% inc ...1979286123
salmonella and arizona serotypes from animals and related sources reported during fiscal year 1976. 1977286364
antibiotic resistance and phage-types of salmonella typhi strains isolated in mexico city. 1978286394
salmonellosis with marked leukocytosis: a case of chronic myeloid leukaemia associated with salmonella infection. 1978286422
bacterial dna synthesized under phage control in a dna-defective salmonella-mutant and packaged into a special fraction of transducing particles of phage p22.lysates of p22 contain a small fraction of transducing particles with bacterial dna replicated semiconservatively after the time of infection. it was demonstrated that the presence and relative amount of this class of transducing particles was unchanged, if infection of salmonella occured under a condition nonpermissive for bacterial dna replication. analysis of particles with dna fragments derived from different regions of the salmonella chromosome indicated that the replication of the bacteria ...1979286870
where are we in controlling salmonellosis? 1978287101
canadian perspective of salmonella control in poultry. 1978287111
salmonella and arizona serotypes from animals and related sources reported during fiscal year 1977. 1978287112
juvenile reiter's syndrome.a case of reiter's syndrome occurring in an 11-year-old, pre-pubertal boy is described. the boy was a heterozygote for the histocompatibility antigen b27 and other arthritic members of his family included his mother with colitic arthritis and an aunt with ankylosing spondylitis. his hla-b27 negative sibs have remained well. shigella salmonella and yersinia organisms have been previously incriminated as precipitating factors in some patients with reiter's syndrome but no evidence of recent infect ...1979287465
inhibition of promutagen activation by the antioxidants butylated hydroxyanisole and butylated hydroxytoluene.butylated hydroxyanisole (bha) and butylated hydroxytoluene (bht) exhibited antimutagenic activity in the salmonella typhimurium reversion test. both bha and bht reduced reversion induced by chemicals requiring metabolic activation for effectiveness. however, they did not affect reversion induced by direct-acting mutagens. these results suggested that bha and bht may inhibit the metabolic activation processes and demonstrated that the s. typhimurium reversion test may be used to identify inhibit ...1979287836
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