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recombination of characters between mutant stocks of vibrio cholerae, strain 162. 196013800348
[on the problem of accelerated identification of vibrio cholera]. 196013809831
activities of bacteria-free preparations from vibrio cholerae. 196013815058
virulence of a nutritional mutant of vibrio comma. 196013823967
stimulation of the production of neuraminidase in vibrio cholerae cultures by n-acetylneuraminic acid and sialyl-lactose. 195913824857
mercaptosuccinic acid and homoserine in the reversal of a norleucine inhibition of vibrio comma. 195913825137
further observations on lysis of vibrio cholerae. 196013831073
[comparative effectiveness of carbon dioxide, vibrio comma filtrate and potassium periodate methods of serum treatment in the elimination of non-specific influenza virus a2 hemagglutination inhibitors]. 195913851137
studies on immunity to asiatic cholera. xi. the distribution of complement-fixing antigen in electrophoretic fractions of heat-stable cell wall and intracellular substance of vibrio cholerae serotypes. 196113875030
[a possibility for the utilization of fluorescent antibodies in rapid detection of vibrio cholerae in water]. 196213878926
studies with vibrio cholerae in the ligated loop of the rabbit intestine. 196113894076
[morphological modifications of vibrio cholerae after autolysis in a glucose medium]. 196113896481
[contribution to the study of o antigen complex of vibrio. ii. spontaneous selective liberation of the vibrio cholerae and v. e1 tor cell wall with loss of o agglutinability. isolation of the specific agglutinogen]. 196213896482
studies on the action of some antibiotics on vibrio cholerae. i. action of penicillin. 196213903782
action of some antibiotics on vibrio cholerae. ii. action of chloramphenicol on the free amino-acid pool. 196213903783
action of polymyxin b on vibrio cholerae. 196113903784
anaerobic dissimilation of glucose by vibrio comma. 196113923820
studies on the haemolytic activity of el tor vibrios.in view of reports of inconsistent results with the haemolytic test for identification of the el tor biotype of vibrio cholerae, a study was made of the experimental variables involved in order to achieve more precise standardization of the procedure. it was found that different types of media and different incubation times of a culture in a particular medium exerted a profound influence on the results. the authors describe the materials and conditions for performance of a reliable haemolytic te ...196313944689
[the thermostable antigens of vibrio cholera. localization and isolation of the specific o agglutinogen]. 196313946268
vibrio cholerae infection in the embryonated egg. 196313946546
action of lysozyme on vibrio cholerae. 196213952057
a new method for the differentiation of vibrio comma and vibrio el tor. 196313952447
protoplast formation as the mechanism for immune lysis of vibrio cholerae. 196313959442
[nucleic acids in vibrio cholerae and paracholera]. 196213972595
laboratory studies on the el tor vibrio.the identity of the el tor vibrio is a controversial question that the usual methods of bacteriological investigation have as yet failed to settle. in this paper, the author presents the results of a study of the interrelationships between el tor vibrios, true cholera vibrios and water vibrios, as revealed by the behaviour of the vibrios in the bile system and in the small intestine of experimental animals.the vibrios investigated included two strains isolated at the el tor quarantine station on ...196313986981
[on differential plating media for isolation of vibrio cholerae. 3. on an enriched medium for vibrio cholerae]. 196214013521
attempts to freeze some bacteriophages to ultralow temperatures.a variety of bacteriophages specific for different hosts, including bacillus cereus, escherichia coli, pseudomonas aeruginosa, serratia marcescens, shigella dysenteriae, staphylococcus aureus, and vibrio comma, were frozen at a controlled rate to liquid nitrogen temperatures, and then quick-thawed. glycerol (10%) was used as a protective additive. quantitative determinations showed from 10% to virtually 100% recovery in the various cases. host specificity, plaque morphology, and, in one case, ra ...196214021543
some observations on the agglutination reaction of vibrio cholerae. 196314034946
effect of ultraviolet radiation on the incorporation of radioactive phosphorus in growing and non-growing cells of vibrio cholerae. 196214042088
preparation of spheroplasts from vibrio comma.chatterjee, b. r. (baylor university college of medicine, houston, texas), and robert p. williams. preparation of spheroplasts from vibrio comma. j. bacteriol. 85:838-841. 1963.-spheroplasts were prepared from several strains of vibrio comma by lysozyme treatment combined with freezing and thawing of the organisms. the optimal concentration of lysozyme was 50 mug/ml, although some spheroplasts formed at a concentration of 10 mug/ml. higher concentrations (200 mug/ml) caused lysis of cells along ...196314044952
sialidase (neuraminidase) of corynebacterium diphtheriae.warren, leonard (national institute of arthritis and metabolic diseases, bethesda, md.) and c. w. spearing. sialidase (neuraminidase) of corynebacterium diphtheriae. j. bacteriol. 86:950-955. 1963.-the characteristics of a sialidase produced by corynebacterium diphtheriae were studied. the enzyme was partially purified from preparations of diphtheria toxin on a column of sephadex g-75. by this means the lethal factor of diphtheria toxin was separated, in part, from the sialidase activity. there ...196314080806
transmission of multiple drug-resistance from shigella flexneri to vibrio comma through conjugation. 196314095980
[effect of potassium periodate and vibrio cholerae filtrate on antibody formation in the blood serum]. 196314097603
formation and motility of spheroplasts of vibrio cholerae induced by penicillin, glycine and lithium chloride. 196314101011
neuraminidases and influenza virus infection in embryonated eggs.highly purified neuraminidase from influenza virus prevents embryonated eggs from infection by lee-b influenza virus. the degree of prevention afforded is equal to that of neuraminidases from vibrio cholerae and from clostridium perfringens when assayed at the same enzyme activity. the preventive effect is much lower against pr-8 virus. the results support the concept that the intact "receptor" containing sialic acid is required for the binding and infection of cells by influenza viruses.196414107434
preliminary studies on the development of a live oral vaccine for anti-cholera immunization.since humoral anti-o antibodies play little part in protective immunity against cholera, and the infecting organisms remain limited in the gut, effective prophylaxis will require the production of active immunity in cells of the mucous membrane of the intestinal canal. it has not been possible to achieve this objective satisfactorily by injections of killed cholera cultures. in laboratory studies for a solution of the problem it has been shown that vibrio cholerae and v. el tor strains possess i ...196314107748
[study of vibrio cholerae using the electron microscope and the relation between the morphological aspect and o agglutination]. 196314107749
vibrio cholerae and colicines. 196314109983
vibrio cholerae "malacca". 196414125192
electron microscopy of structure of flagellum of vibrio comma. 196414125373
[sensitivity of e1 tor vibrio cholerae to antibiotics]. 196414134700
studies on typing of cholera vibrios by bacteriophage. v. geographical distribution of phage-types of vibrio cholerae. 196314154194
[phenomena of microbial variation with observations on "vibrio comma pottevin"]. 196314166965
[studies on the colony mutation of vibrio comma and el tor vibrio on differential plating media containing bile salts]. 196414172295
[study of cholera antigen. iv. effect of the initial culture of vibrio cholerae on the quantity and specific activity of antigen complexes]. 196414182375
phage-host relationships in vibrio cholerae. 196414183393
new transport medium for shipment of clinical specimens. i. fecal specimens.cary, sylvia g. (walter reed army institute of research, washington, d.c.), and eugene b blair. new transport medium for shipment of clinical specimens. i. fecal specimens. j. bacteriol. 88:96-98. 1964.-a new transport medium for the collection and shipment of clinical specimens is described. preliminary studies indicate that, with initial fecal specimens, salmonella and shigella can be recovered for as long as 49 days, vibrio comma for 22 days, and pasteurella pestis for at least 75 days.196414197911
manner of attachment of flagella in vibrio comma. 196414203372
[chemical composition of lipids and fatty acids in vibrio cholerae]. 196414207625
rapid identification of vibrio cholerae by darkfield microscopy.this article describes a rapid, simple and reproducible method for detecting vibrio cholerae in diarrhoeal patients. the method involves darkfield examination of a liquid stool specimen or a rectal swab immersed in broth and immobilization of v. cholerae by the addition of specific vibrio antisera. the authors state that in 80% of cases a definitive diagnosis is available within five minutes. there is no need for elaborate equipment or long training of technicians and the method is easily perfor ...196414215188
agglutinating, lethal toxin and e1 tor haemolysin neutralizing potency of sera in cholera.there is a lack of agreement as to the significance of agglutination test results in cholera, and recent epidemics of "classic" vibrio comma and el tor infections have provided an opportunity to compare this test with two other serological procedures recently introduced in cholera work. these are determination of the circulating antitoxin expressed as the lethal toxin neutralizing power of a serum, and determination of the haemolysin neutralizing power through serial test-tube dilutions.applying ...196414215189
segregation of genetic factors during recombination in vibrio cholerae, strain 162.in this paper an analysis of genetic recombinants derived from crosses between two mutant stocks of vibrio cholerae, strain 162, differing from one another in nutritional requirements and other characters, is presented. it is shown that parent strains possessing a fertility factor (designated as the p factor) function as gene-donors while p(-) strains (without the p factor) serve as gene-recipients. linkage between two genetic factors (purine and valine + isoleucine) is demonstrated and the prob ...196414215190
hemagglutinating activity of vibrio comma. 196414232459
a comparison of virulence of vibrio cholerae strains for the embryonated egg. 196414233131
intracellular peptidases of vibrio cholera and their possible role in pathogenicity. 196414246491
enzymes in vibrio cholerae. 196414246492
immunochemistry of antigens of vibrio cholerae. 196414246494
[phage-resistant mutants of vibrio cholerae and isolation of latent phages from them]. 196514263197
studies in immunochemistry of vibrio cholerae. vi. haemagglutination. 196514266442
classification of vibrio cholerae (vibrio comma), including el tor vibrios, by infrasubspecific characteristics.feeley, john c. (national institutes of health, bethesda, md.). classification of vibrio cholerae (vibrio comma), including el tor vibrios, by infrasubspecific characteristics. j. bacteriol. 89:665-670. 1965.-a study of the properties of 220 serotype o group i vibrios indicated striking similarity in most of their properties. however, by using four tests often applied in the identification of the el tor vibrio, five types were identified and characterized as follows: type 1 strains, phage iv-sen ...196514273642
electron microscopic determination of length and breadth of vibrio cholerae and vibrio el tor. 196514281046
[bacteriologic observations on the vibrio cholerae (el tor) isolated in cambodia]. 196414281486
non-vibrio cholera. 196514283763
studies in the media of choice for the isolation of vibrio cholerae. 196514297626
interesting variation observed in a strain of vibrio cholerae. 196514313803
effects of lactic acid-forming bacteria on vibrio comma inoculated into intestinal segments of rabbits.hattori, h. (sankyo co., ltd., tokyo, japan), h. misawa, i. igarashi, and y. sugiya. effects of lactic acid-forming bacteria on vibrio comma inoculated into intestinal segments of rabbits. j. bacteriol. 90:541-545. 1965.-mixed inocula of vibrio comma kc-4 and various lactic acid-forming bacteria were injected into the intestinal segments of rabbits (de and chatterje, 1953) to observe the effects of the latter agents in altering the changes produced by strain kc-4. the animals were sacrificed 10 ...196514329471
[quantitative composition of vibrio cholerae according to specific agar precipitation reaction]. 196414333946
incorporation of labelled glycine & adenine by purine auxotrophs of vibrio cholerae. 196514334157
biochemistry of vibrio cholerae. 3. biosynthesis of ribose. 196514334169
effect of certain purine and pyrimidine analogues on growth, nucleic acid synthesis and ultraviolet-induced lysis in vibrio cholerae. 196514336429
[colistin-disk as a method for differentiation of vibrio cholerae and el tor vibrio]. 196514345692
[relation of external environment to modifications of vibrio comma o-antigen]. 195414349241
[studies on morphology and multiplication of pleuropneumonia-like organisms and on bacterial l-phase, i. light microscopy]. 195414350641
[studies on morphology and multiplication of pleuropneumonia-like organisms and on bacterial l-phase. ii. electron microscopy]. 195414350642
[discovery of vibrio cholerae by filippo pacini, of pistoia, established in the initial phases of microbiological thought and judged after a century]. 195414355829
tube and slide technic in the hemagglutination of vibrio comma. 195514361911
cholera studies. 3. bacteriology.the morphological characteristics, biochemical properties, and cultural characteristics of v. cholerae are described in great detail in this study. the author also discusses the resistance of the organism to temperature, humidity, sunlight, and various chemicals, as well as the viability of v. cholerae outside the body (in faeces, contaminated material, food, beverages, water, etc.).195514379012
[dermal lesions obtained in the rabbit after inoculation of l forms]. 195414379597
toxic proteins from vibrio cholerae and water vibrios which are lethal for mice. 195914407054
the immunological relationship of a protein toxin from vibrio cholerae to its 'o' somatic antigen. 195914407055
action of streptomycin on vibrio cholerae. 196014412035
[isolation of diaminopimelic acid from vibrio comma]. 196014435377
production of neuraminidase by l forms of vibrio cholerae. 196114468120
a highly selective gelatin-taurocholate-tellurite medium for the isolation of vibrio cholerae. 196114475439
cholera bacteriophages in preventing gut inflammatory action of vibrio cholerae. 196114477034
characterization of cholera typing phages. iv. phage-resistant mutants of vibrio cholerae. 196214477037
[research with a view to establishment of a lysotype for vibrio cholerae and vibrio el tor]. 196214479579
[some data on the phagolysis of vibrio cholerae in water]. 196214479856
[a medical study of the low saturated fatty acid. 3. effect of low saturated fatty acids on vibrio comma]. 196114495676
comparison of the structure and regulation of the udp gene of vibrio cholerae, yersinia pseudotuberculosis, salmonella typhimurium, and escherichia coli.the nucleotide sequences of the udp gene encoding uridine phosphorylase of yersinia pseudotuberculosis and vibrio cholerae are presented and compared with the udp sequences of salmonella typhimurium and escherichia coli. both genes contain 759 bases and encode a 253 amino acid polypeptide, which is the same as for e. coli and s. typhimurium. the amino acid sequence derived from s. typhimurium gene was more similar to the derived e. coli sequence, with only a 7 amino acid difference. the y. pseud ...200314499937
construction and evaluation of a safe, live, oral vibrio cholerae vaccine candidate, iem108.iem101, a vibrio cholerae o1 el tor ogawa strain naturally deficient in ctxphi, was previously selected as a live cholera vaccine candidate. to make a better and safer vaccine that can induce protective immunity against both the bacteria and cholera toxin (ct), a new vaccine candidate, iem108, was constructed by introducing a ctxb gene and an el tor-derived rstr gene into iem101. the ctxb gene codes for the protective antigen ctb subunit, and the rstr gene mediates phage immunity. the stable exp ...200314500467
the global regulator arca modulates expression of virulence factors in vibrio cholerae.a vibrio cholerae arca mutant was constructed and used to examine the role of the global anaerobiosis response regulator arca in the expression of virulence factors in this important human pathogen. in v. cholerae, expression of the major virulence factors cholera toxin (ct) and toxin-coregulated pilus (tcp) is regulated by the transcriptional activator toxt. toxt expression, in turn, is controlled by the transmembrane dna binding proteins toxr and tcpp. in the v. cholerae arca mutant, although ...200314500477
current immunizations for travel.international travelers may be at risk from a variety of potentially severe and life-threatening infections. some of these diseases are preventable, and vaccination remains a cornerstone of travel medicine. vaccines that are important for international travel are reviewed, in a succinct update based on the most recent literature.200314501987
probing control of glucose feeding in vibrio cholerae cultivations.infection with vibrio cholerae is a significant problem in many developing countries. cultivation of v. cholerae is used in production of cholera toxin b subunit, which is a component in a cholera vaccine. fed-batch cultivations with v. cholerae in defined media have been conducted and reproducible results were obtained. a probing feeding strategy developed by akesson for escherichia coli cultivations has been tested. the strategy is working as well for v. cholerae as for e. coli in minimizing t ...200314505000
electron ionization mass spectrometric study of monomeric models of o-polysaccharides of vibrio cholerae o:1, serotypes ogawa and inaba.fragmentation mechanisms of electron ionization (ei) mass spectrometry of the title compounds have been elucidated by high-resolution (hr) mass spectrometric measurements of the elemental composition and measurements of the metastable transitions (b(2)/e, cid). the experimental results were interpreted with the help of mass frontier 3.0 software, which aided the elucidation of fragmentation mechanisms and helped to deduce structures of the ions formed. characteristic under the conditions of ei-m ...200314505319
quorum sensing controls biofilm formation in vibrio cholerae.multiple quorum-sensing circuits function in parallel to control virulence and biofilm formation in vibrio cholerae. in contrast to other bacterial pathogens that induce virulence factor production and/or biofilm formation at high cell density in the presence of quorum-sensing autoinducers, v. cholerae represses these behaviours at high cell density. consistent with this, we show here that v. cholerae strains 'locked' in the regulatory state mimicking low cell density are enhanced for biofilm pr ...200314507367
emergence and re-emergence of vibrio cholerae 0139: an epidemiological study during 1993-2002 at nagpur, central india.the pattern of vibrio cholerae 01 and 0139 isolates at indira gandhi medical college and mayo general hospital, nagpur from 1993 to 2002 is presented. emergence of the novel serotype 0139 in 1993 was followed by periods of quiescence and re-emergence. for the first time after 1993, the 0139 isolates out numbered 01 isolates in 2001. the peculiar epidemiological pattern is compared with other reports.200314510347
persistence of adhesive properties in vibrio cholerae after long-term exposure to sea water.the effect of exposure to artificial sea water (asw) on the ability of classical vibrio cholerae o1 cells to interact with chitin-containing substrates and human intestinal cells was studied. incubation of vibrios in asw at 5 degrees c and 18 degrees c resulted in two kinds of cell responses: the viable but non-culturable (vbnc) state (i.e. <0.1 colony forming unit ml-1) at 5 degrees c, and starvation (i.e. maintenance of culturability of the population) at 18 degrees c. the latter remained rod ...200314510838
concurrent infection with s.typhi and v. cholerae--a case report".an eight year old male child presented with symptoms of diarrhoea, vomiting & fever with signs of moderate dehydration. he was treated with tetracyline and fluid replacement therapy. inspite of treatment and control of diarrhoea and vomiting patient developed gastrointestinal bleeding and tenesmus with continued fever. deterioration in patient's condition to suspicion of another infection. high level of suspicion and appropriate microbial investigations revealed dual infection with s. typhi and ...200314514270
studies on the immunogenic potential of plant-expressed cholera toxin b subunit.nicotiana tabacum var. samsun was transformed via agrobacterium-mediated transformation with a gene encoding the cholera toxin b subunit (ctb) of vibrio cholerae, modified to contain a sequence coding for an endoplasmic reticulum retention signal (sekdel), under the control of the cauliflower mosaic virus 35s promoter. total protein from the transgenic leaf tissue was isolated and an aliquot containing 5 microg recombinant ctb was injected intradermally into balb/c (h2k(d)) mice. ctb-specific se ...200414517689
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