Publications

TitleAbstractYear(sorted ascending)
Filter
PMID
Filter
[the spread of parahemolytic vibrios in humans in the burgass region (bulgaria)].the presence of parahemolytic vibrios in the water of the black sea and also in other water bodies, in the hydrobionts, and later in the secondarily contaminated meat products was demonstrated in 1968. in 1973 gastroenteritis caused by parahemolytic vibrios became widespread; 126 cases were confirmed bacteriologically, and 3 cases were found to be carriers. the infected food products were eliminated, and no more cases of the disease were revealed in 1974.19761007742
sublethal heat stress of vibrio parahaemolyticus.when vibrio parahaemolyticsu atcc 17802 was heated at 41 degrees c for 30 min in 100 mm phosphate-3% nacl buffer (ph 7.0), the plate counts obtained when using trypticase soy agar containing 0.25% added nacl (0.25 tsas) were nearly 99.9% higher than plate counts using trypticase soy agar containing 5.5% added nacl (5.5 tsas). a similar result was obtained when cells of v. parahaemolyticus were grown in a glucose salts medium (gsm) and heated at 45 degrees c. the injured cells recovered salt tole ...19761008556
chick embryo virulence of some non-agglutinable (nag) vibrios. 19761008692
vibrio parahaemolyticus gastroenteritis associated with international travel.food-borne gastroenteritis due to vibrio parahaemolyticus is becoming of increasing world importance. this paper describes the clinical presentations and laboratory investigations of four cases of gastroenteritis due to v. parahaemolyticus among passengers returning to australia on international aircraft from south-east asia.19761012128
studies of the cell envelope of vibrio para-haemolyticus a55: isolation and purification of bag-shaped peptidoglycan (murein sacculus).the peptidoglycan (pg) component of the envelope of vibrio parahaemolyticus a55 was studied in relation to the salt dependency of the organism. a bag-shaped pg (murein sacculus) was isolated and purified by digestion of freshly harvested intact whole cells with sodium dodecyl sulfate (sds) and then protease treatment. whole cells lyze in salt-deficient or hypotonic conditions and this can be measured by turbidometry. lysis is prevented by addition of 0.35 m nacl or acidification to below ph 4.5. ...19761016218
isolation of a small rod with lytic activity against vibrio parahaemolyticus from fresh sea water.a small rod, capable of formine crater-like plaques on lawns of vibrio parahaemolyticus, was isolated from a marine environment. the isolate was a gram-negative straight rod with round ends and was small in size, equal to that of halophilic bdellovibrio strain 5501. the isolate appeared to have close taxonomic relationships to cytophaga, since this bacterium moved slowly in a gliding manner on a solid agar surface, hydrolyzed agar and starch, contained yellow pigment and was halophilic. the isol ...19761018344
clinical and epidemiological studies on v. parahaemolyticus infection in calcutta (1975). 19761024059
sensitivity of vibrio group of organisms to minocycline--a new tetracycline derivative. 19761024085
comparative studies on the enzymes of different strains of vibrio cholerae & vibrio parahaemolyticus. 19761024973
investigations on the conservation of parahaemolytic vibrios by lyophilization and direct desiccation. (preliminary note). 19761030629
hydrogen sulphide production as an aid to the identification of vibrio parahaemolyticus.in this study 18 strains of vibrio parahaemolyticus from food and 8 from humans were tested for hydrogen sulphide production on various modifications of russel's triple sugar slopes and on tsi. all strains showed a characteristic surface browning on rts with andrade's indicator. this was not seen when rts with phenol red as indicator or tsi were used. appearance of this phenomenon allows unknown strains to be suspected as being vibrio parahaemolyticus.19761030841
chemical structure of the peptidoglycan of vibrio parahaemolyticus a55 with special reference to the extent of interpeptide cross-linking.the chemical structure of the cell wall peptidoglycan of vibrio parahaemolyticus a55 was studied. estimation of cross linkages between peptide subunits in the peptidoglycan by dinitrophenylation showed that about 30% of the total 2,6-diaminopimelic acid (a2pm) residues were involved in cross linkages. the presence of interpeptide bridges was also demonstrated by isolating bisdisaccharide peptide subunit dimers from chalaropsis muramidase digests of the cell wall peptidoglycan by gel filtration f ...19761030950
a bacterial cardiotoxin: thermostable direct hemolysin produced by vibrio parahaemolyticus. 19761031960
stopping of spontaneous beating of cultured mouse and rat myocardial cells by a toxin (thermostable direct hemolysin) from vibrio parahaemolyticus.low concentrations of thermostable direct hemolysin from vibrio parahaemolyticus stopped the spontaneous beating of cultured mouse and rat myocardial cells. these low concentrations depolarized the maximal diastolic potential and inhibited the generation of action potential of cultured myocardial cells. the toxin lost its activity when preincubated with ganglioside, gt1 or gm1. gt1 was more effective than gm1. high concentrations of the toxin caused morphological damage of cultured mouse and rat ...19761031961
increase in membrane conductance and positive inotropic action of hemolysin produced by vibrio parahaemolyticus on rabbit myocardium.the effects of purified thermostable direct hemolysin from the cultured filtrate of vibrio parahaemolyticus on both s-a node cells and atrial cells were studied electrophysiologically. hemolysin caused the membrane conductance to increase, thereby causing membrane depolarization. the major ion responsible for this depolarization was na+, but other ions, such as k+ and ca2+, also participated. positive inotropic action of hemolysin was observed, and the na-ca exchange mechanism was enhanced after ...19761031962
isolation of a factor causing morphological changes of chinese hamster ovary cells from the culture filtrate of vibrio parahaemolyticus.a factor changing chinese hamster ovary cells from an oval to a spindle shape was isolated from the culture filtrate of vibrio parahaemolyticus. it was partially purified by successive column chromatographies on diethylaminoethylcellulose, diethylaminoethyl-sephadex a-25, hydroxylapatite, and sephadex g-200. this factor was separated from thermostabl direct hemolysin and was heat labile.19761033156
human infections caused by v. parahaemolyticus in czechoslovakia.vibrio parahaemolyticus was isolated in two subjects with acute gastroenteritis. the patients history included stay in pakistan or india. they probably contracted the infection on board an aeroplane where they ingested cold meal containing sea products. the possibility of this conditioned pathogen occurring also in an inland country is pointed out.19761033228
[heterogenous patterns of pleiotropy in pts-mutants of vibrio parahaemolyticus]. 19761034032
human infections caused by v. parahaemolyticus in czechoslovakia.vibrio parahaemolyticus was isolated in two subjects with acute gastroenteritis. the patients' history included stay in pakistan or india. they probably contracted the infection on board an aeroplane where they ingested cold meal containing sea products. the possibility of this conditioned pathogen occurring also in an inland country is pointed out.19761034657
[induction and repression of l-arabinose isomerase in vibrio parahaemolyticus]. 19761034742
[defective utilization of various carbon sources in a mutant of vibrio parahaemolyticus lacking a component of the phosphoenolpyruvate: sugar phosphotransferace system]. 19761034743
elucidation of hydrocarbon structure in an enzyme-catalyzed benzo[a]pyrene-poly (g) covalent complex.the carcinogen, benzo[a]pyrene, was covalently attached to poly (g) by liver microsomes from rats pretreated with 3-methylcholanthrene. the complex was hydrolyzed with enzymes or base and products were isolated by sephadex chromatography. absorbance and fluorescence spectra of the products fit that of red-shifted pyrene aromatic system and suggest that metabolism has occurred at the 7-, 8-, 9-, and 10-positions of the hydrocarbon. benzanthracene or chrysene fluorescence were not observed in thes ...19761064016
vibrio parahaemolyticus-food poisoning: case report.symptoms of food poisoning occurred following the ingestion of raw shellfish purchased in the auckland area. vibrio parahaemolyticus was recoverer from the patient. the potential of this and closely related microorganisms to cause illness is reviewed.19761064793
evidence for glucocorticoid receptor in human leukocytes.the glucocorticoid uptake in vitro by human periferal leukocytes was studied. the uptake showed 2 main components, one saturable and one non-saturable. the saturable component was compared with the uptake by the specific glucocorticoid receptor in rabbit granulocytes. the similarities with the rabbit receptor in structural specificity, time course of uptake at 37 degrees c, sensitivity to metabolic inhibition by pcms and the physiological concentration for half saturation indicate that the satur ...19761068630
vibrio parahaemolyticus food poisoning: a case report. 19761072814
[value of a therapeutic combination: vitamin a-yeast-sulfur]. 1976135073
transplantation of hymenolepis diminuta into naive, immune and irradiated mice.almost 100% of 7- to 10-day-old hymenolepis diminuta became established when surgically transplanted from donor mice into the duodenum of naive recipient mice. transplanted tapeworms survived 8-12 days, by which time they had survived much longer in total than they would have done in the donor. mice previously immunized by a primary infection rejected transplants within 4 days. sub-lethal irradiation (550 rad) delayed rejection by immune mice but such mice still rejected worms much more quickly ...1976135242
suppressor mechanisms in neonatally acquired tolerance to a gross virus-induced lymphoma in rats.tolerance to a highly immunogenic gross virus-induced tumour in wistar/furth rats (c58nt)d was produced by neonatal infection of the rats with the virus. these rats failed to reject the tumours when challenged 8 weeks after virus inoculation and to mount the appropriate cell-mediated immune response to the tumour. the mechanisms involved were studied in vivo by adoptive transfers into sub-lethally irradiated rats of tumour cells mixed with spleen cells and/or sera from normal, tolerant, or tumou ...1976135385
cellular metabolic control by chemical modification of cell membrane.various reagents used in the chemical modification of amino- and carboxy-groups of proteins, and of carbohydrates of glycoproteins and glycolipids, inhibit respiration in ascites tumor cells concomitant with release of potassium ion from those cells. the respiratory activity of washed ascites tumor cells is increased by exogenous addition of potassium ion. the lowered respiratory control index as well as oxidative phosphorylation of aged mitochondria are restored upon increasing the potassium co ...1976196300
laboratory investigation of diarrhea in travelers to mexico: evaluation of methods for detecting enterotoxigenic echerichia coli.a laboratory investigation was conducted on cultures collected from travelers before, during, and after a trip to mexico to characterize the etiology of traveler's diarrhea. four laboratory methods for detecting enterotoxigenicity of escherichia coli were evaluated: the infant mouse assay, the chinese hamster ovary (cho) cell assay, the y1 adrenal cell assay, and the rabbit ileal loop. although a number of common enteric pathogens were identified as a cause of traveler's diarrhea, including six ...1976180047
nitrogenase of azotobacter chroococcum. kinetics of the reduction of oxidized iron-protein by sodium dithionite.the kinetics of the reduction of oxidized fe-protein of nitrogenase from azotobacter chroococcum by sodium dithionite were studied by stopped-flow and rapid-freezing e.p.r. (electron-paramagnetic-resonance) spectroscopy. the appearance of the gav. = 1.94 e.p.r. signal (0.24 electron integrated intensity/mol) was associated with a one-electron reduction by so2--with k greater than 10(8)m-1-s-1 at 23 degrees c. a value of k = 1.75s-1 was obtained for the rate of dissociation of s2o42- into 2so2-- ...1976180978
how the mouse leukemia virus was discovered. a talk with ludwik gross. 1976184434
laboratory diagnosis of foodborne diseases.many bacterial species are responsible for sporadic cases and outbreaks of foodborne intoxication and infection. the foodborne diseases are classified on the basis of the pathogenetic mechanisms involved into four categories: performed toxin, enterotoxin formed in the colonized small intestine, mucosal invasion (enterocolitis) and mucosal invasion with bacteremia. invasive and toxigenic strains of enteropathogenic escherichia coli are discussed. in vivo test systems for the identification of ent ...1976184732
quantification of human atrioventricular nodal concealed conduction utilizing s1s2s3 stimulation.we studied antegrade concealed conduction of atrial extrastimuli (a2) that blocked in the atrioventricular (av) node in eight subjects, using a third extrastimulus (a3), coupled at decreasing coupling intervals to a2. three a1-a2 intervals were tested in each subject: late (just shorter than av nodal effective refractory period), intermediate, and early (just longer than atrial functional refractory period). the curves relating the following variables were constructed for each a2: a1-a3, h1-h3 a ...1976184975
reconstitution of t cell function in patients with subacute sclerosing panencephalitis treated with thymus humoral factor.two patients with subacute sclerosing panencephalitis (sspe) showed impairment of cell-mediated immunity, as indicated by a low t cell number, decreased intracellular cyclic amp levels of peripheral blood lymphocytes, negative graft-vs.-host reaction in vivo, negative skin reactions to common antigens and, in one of the patients, abnormal reactions in migration inhibition factor tests. since some of the impaired t cell functions in one of the patients were reconstituted in vitro by the administr ...1976186082
[carbohydrate metabolism in the kidneys of rats with dimethylnitrosamine-induced tumors].under study was anaerobic glycolysis, the activity of hexokinase, lactate dehydrogenase, gluco-6-phosphatase in rat kidneys in dimethylnitrosamine (dmna) induced tumors in them. dmna was administered perorally in the dosage of 10 mg/kg during 4 weeks (25 mg per rat). following 8 months tumors developed in the renal cortical substance. the tumor tissue, the renal cortical substance adjacent to the tumor, and the renal cortical substance without macroscopic tumor signs have been studied. an increa ...1976186957
[histochemical studies on the role of myoepithelial cells in the morphogenesis of mammary tumors in the bitch. 3. immunohistochemical findings in mammary tumors]. 1976186986
the nadph oxidase activity of polymorphonuclear neutrophilic leukocytes revisited. 1976187027
inhibitory effects of prostaglandin e1 on responses of rabbit ear artery to nerve stimulation and on release of norepinephrine.pge1 in concentrations of 7 x 10(-9) to 4.5 x 10(-7) m inhibited the vasoconstrictor responses of the perfused rabbit ear artery to nerve stimulation. the degree of inhibition was dependent on the concentration of pge1, as well as on the train length and frequency of stimulation. the vasoconstriction produced by norepinephrine was not altered by 1.1 x 10(-7) m pge1. this substance markedly reduced the stimulation-evoked outflow of 3h-norepinephrine from the artery. the findings indicate that pge ...1976187049
reversal of the memory-disruptive effects of rem sleep deprivation by physostigmine. 1976187162
the action of snake venom, phospholipase a and trypsin on purified myelin in vitro.1. purified myelin was incubated with snake venom or phospholipase a in the presence of or absence of trypsin at 37 degrees c, ph7.4, for different times. 2. analysis of the myelin pellet obtained after centrifugation of the myelin sample incubated with snake venom or phospholipase a alone showed conversion of phosphatidylcholine, phosphatidylethanolamine and phosphatidylserine into their corresponding lyso compounds. no significant loss of myelin protein was observed in these samples. 3. a mark ...1976187172
immune host response to corneal grafts sensitized to herpes simplex virus.experiments were performed to study the fate of corneal grafts sensitized to herpes antigens when grafted to hsv-sensitized hosts. nonsensitized grafts in systemically sensitized hosts remained clear, whereas all locally sensitized grafts in systemically sensitized hosts became opaque within ten days. the stroma showed severe lymphocytic and plasma cell infiltration and neovascularization. one-half of the corneas from systemically sensitized hosts grafted to eyes previously infected opacified in ...1976176129
foot-and-mouth disease virus rna. presence of 3'-terminal polyriboadenylic acid and absence of amino acid binding ability. 1976176778
temperature-dependent inactivating factor of pseudomonas aeruginosa exotoxin a.the adenosine diphosphate ribosyl transferase activity of pseudomonas aeruginosa exotoxin a(pa toxin) was found to be rapidly destroyed by heating at 45 to 60c but not by heating at 70 to 90c (for at least 30 min). this phenomenon has been previously described for other bacterial toxins (staphylococcal alpha-toxin and vibrio parahaemolyticus hemolysin) and is termed an arrhenius effect. in contrast, the arrhenius effect was not seen when the pa toxin was heat-treated as above and tested for cell ...1976178606
developmental changes in mitochondria during the transition into lactation in the mouse mammary gland. ii. membrane marker enzymes and membrane ultrastructure.the activity of cytochrome oxidase (an inner mitochondrial membrane marker) in mouse mammary gland homogenates was found to increase five- to sixfold from late pregnancy to day 8 of lactation, while that of monoamine oxidase (an outer membrane marker) increased only about 25%. the specific activity of cytochrome oxidase in the isolated mitochondria decreased slightly over the same period while the specific activity of monoamine oxidase decreased fivefold. this reflects the fact that both cytochr ...1976178667
characterizatiion of rat genetic sequences of kirsten sarcoma virus: distinct class of endogenous rat type c viral sequences.the nucleic acid sequences found in dna and rna from rat cells which are homologous to kirsten sarcoma virus have been characterized. the homologous sequences are present in multiple copies per diploid rat cellular genome in a variety of different rat cellular dna's. in certain cells that constitutively express only low levels of sequences homologous to kirsten sarcoma virus, bromodeoxyuridine treatment leads to the expression of high levels of these sequences in rna. supernatants from cell line ...1976178897
allergic reaction to allopurinol with cross-reactivity to oxypurinol.a 25-year-old white man with gout and nephropathy and with a previous reaction to allopurinol was given a trial dose of oxypurinol. he developed malaise, a generalized erythematous reaction with edema, pruritus, and emesis; this was clinically identical to the reaction he experienced with allopurinol. when the patient's lymphocytes were exposed in vitro to oxypurinol and allopurinol, increased dna synthesis was observed, suggesting an immunologic basis for the reaction. this patient indicates th ...1976134655
[prenatal development of monoamine neurons in the rat].the histofluorescence method allows the study of the prenatal development of monoamines neurons in the foetal rat brain. certain patterns of this development can be defined: the locus niger and the raphe appears fluorescent on the 14th day, the locus coeruleus on the 15th day. these systems differentiate independently in various areas of the neural axis. their maturation are progressive: first for the da system, then for the na and the 5 ht systems. the mechanisms for synthesis and storage of am ...1976134781
[influence of microflora on the metabolism of l-threonine at the level of the rat digestive tract].intestinal tissues are found to incorporate l threonine 14cu at faster rate in the absence of microflora. most of the radioactivity of the digestive contents occurs in the tca soluble compounds, except in the coecum and large intestine of the conventional rats where the microflora synthetized its own proteins from the labelled digestive material. free threonine is the main labelled soluble compound in the conventional rats digestive contents. in the other hand, in the germfree rats digestive con ...1976134804
localization on mitochondrial dna of mutations leading to a loss of rutamycin-sensitive adenosine triphosphatase.four cytoplasmic mutants of saccharomyces cerevisiae showing loss of mitochondrial rutamycin-sensitive atpase activity but having significant cytochrome oxidase and nadh-cytochrome c reductase have been isolated. genetic studies indicate the mutations to be closely linked to each other and have been assigned to a new locus, pho1. the mutations show a low frequency of recombination with the ol12 locus, suggesting a linkage to this marker. they are not, however, linked to the oli1 locus. linkage o ...1976134892
a progressive approach to the problem of foodborne infections.qualitative and quantitative bacteriological examinations of 100 samples of perishable foods from 39 retail stores were performed to determine the presence of bacterial contaminants and to explore the feasibility of establishing and utilizing microbiological standards in enforcement. forty-six per cent of the samples had standard plate counts in excess of 100,000 per gram, 17 per cent showed coliform organisms in excess of 100 per gram, 20 per cent revealed the presence of staphylococcus aureus ...1977188346
infectious murine type-c viruses released from human cancer cells transplated into nude mice.type-c virus particles were revealed by electron microscope in 6 of 9 tumours of cultured and biopsied human cancers heterotransplanted into nude mice. some tumours in nude mice were explanted for in vitro cultivation. the virus particles were also found in the cultures derived from the virus-positive tumors. they were mostly found extracellularly, but the particles in budding process were also encountered frequently. cytological study and karyotype analysis of the cultured cells proved these vi ...1977193756
the storage lipids in tangier disease. a physical chemical study.the physical states and phase behavior of the lipids of the spleen, liver, and splenic artery from a 38-yr-old man with tangier disease were studied. many intracellular lipid droplets in the smectic liquid crystalline state were identified by polarizing microscopy in macrophages in both the spleen and liver, but not in the splenic artery. the droplets within individual cells melted sharply over a narrow temperature range, indicating a uniform lipid composition of the droplets of each cell. howev ...1977193870
[nuclear receptors for triiodothyronine. i. binding of triiodothyronine (t-3) in rat liver following in vivo administration of labelled hormone]. 1977195802
preparation of biologically active tritium-labelled 1--34 human parathyroid hormone. 1977195840
suitability of some enrichment broths and diluents for enumerating cold- and heat-stressed vibrio parahaemolyticus.vibrio parahaemolyticus cells were injured by chilling and heating, and their recovery was tested in glucose-salt-teepol broth (gstb), tryptic soy broth containing 7% nacl (tsbs), horie - arabinose - ethyl violet broth (haeb), and water blue - alizarin yellow broth (wbay). exponential phase cells were more sensitive to cold shock than were stationary phase cells. exposure of chill-injured v. parahaemolyticus to gstb and tsbs resulted in 70 to 80% death; about 70% lethality was noted for heat-in ...197717461
cyclic guanosine-3',5'-monophosphate--mediator of the action of the hormaone erythropoietin. 197718327
antigenicity of lateral flagella of vibrio parahaemolyticus: existence of two distinct antigenic determinants in a flagellum.cells of vibrio parahaemolyticus treated with formalin agglutinated with anti-lateral flagella antiserum. on the basis of agglutination tests, antigens of lateral flagella were divided into three groups. hl1, hl2, and hl3. however, in gel diffusion tests, flagellins prepared from strains belonging to different groups showed a common antigenicity. it is assumed that these results are due to the existence of two distinct antigenic determinants in the lateral flagella. one of them exists on the sur ...197769612
possible presence of a genus-specific antigen in vibrios. 197773372
[serological survey of animal rickettsioses in cameroon. i. evaluation of the threshold of positivity and specificity of the micro-agglutination reaction as related to the size of the animal]. 197796947
etiology of virus pneumonia among children in peking, 1973-1975. 1977196816
bacterial hazards. 1977197534
progesterone interaction with estrogen and antiestrogen in the rat uterus--receptor effects.daily injections of estradiol or the antiestrogen tamoxifen initially stimulate uterine weight increase and progesterone receptor synthesis, though continued tamoxifen fails to maintain the increased weight. the stimulatory actions of both estradiol and tamoxifen are inhibited or reversed by a single injection of progesterone. it has been hypothesized that progesterone antagonizes estrogen action by reducing estrogen receptor levels, but in the present experiments neither cytoplasmic nor nuclear ...1977201053
plasma adrenocorticotropin levels in normal dogs.plasma concentrations of adrenocorticotropin (acth; corticotropin) were measured in 31 normal dogs (house pets) at rest. the mean concentration was 45.77 pg/ml of blood, with individual values ranging from 17 to 98 pg/ml of blood. the measurement of this hormone secreted by the anterior lobe of the pituitary gland (adenohypophysis) may aid in the diagnosis of spontaneous canine adrenal cortical disorders, both primary and secondary.1977201191
an investigation of the homology of guanylate kinase isozymes in mammals and further evidence for multiple guk gene loci.guanylate kinase in the red cells of 63 different mammalian species was studied by electrophoresis and multiple molecular forms of the enzyme were found in all species. two species were investigated in more detail. using molecular weight estimates as a criterion of homology, the fallow deer and the chinese hamster were found to have isozymes that corresponded to isozyme e, f, and g of man. variation in the guanylate kinase isozymes was detected in a small population of orangutans. results sugges ...1977201245
1,2,4-triazole amino nucleosides. 1-beta-d-3'-amino-3'-deoxyribofuranosyl-1,2,4-triazole-3-carboxamide and related nucleosides.the synthesis of 1-beta-d-3'-amino-3'-deoxyribofuranosyl-1,2,4-triazole-3-carboxamide--the 3'-amino analogue of ribavirin--and five related nucleoside analogues is described. each analogue exhibited ld50 concentrations greater than 100 microgram/ml against p-388 mouse lymphoid leukemia cells in tissue culture. antiviral testing indicated that none of the compounds exhibited significant activity.1977201758
[demonstration of the variations in accessibility or reactivity of mitochondrial sh groups according to the energy status of the mitochondria].evidence for energy dependent variations of mitochondrial sh groups accessibility or reactivity was obtained using alkylating agents. these variations are thought to be consecutive to conformational changes affecting some proteins among them the phosphate carrier and the adenylic nucleotide translocator.1977145307
variation in potassium transport properties of mouse 3t3 cells as a result of subcultivation.unindirectional potassium influx and the fraction of this influx sensitive to ouabain, an inhibitor of the (na + k) activated atpase, have been evaluated as a function of subcultivation of the 3t3 and sv40 transformed 3t3 cell. total and ouabain-sensitive k influx change little over approximately 50 passages of the transformed 3t3 cell. in contrast, these components of k influx increase nearly 5-fold over a similar number of passages of the 3t3 cell. during early passages total and ouabain-sens ...1977145445
a role for central serotonergic systems in the pattern and intensity of the convulsive response of rats to electroshock. 1977145548
[studies on moraxella. ii. studies on the identification of moraxella by biochemical character (author's transl)]. 1977101604
[effect of various antibiotics, disinfectants and uv light on the viability of vegetative cells and spores of cl. perfringens type a]. 1977202819
[new findings on various bacteria and their toxins as possible causative agents of food poisoning]. 1977203102
calcium gradient dependent pyrophosphate formation by sarcoplasmic vesicles.the vesicles of the sarcoplasmic membranes synthesize pyrophosphate from inorganic phosphate. pyrophosphate synthesis proceeds as long as a calcium gradient is maintained across the vesicular membranes. pyrophosphate synthesis is inhibited by low concentrations of nucleoside triphosphates.1977203132
the virion and soluble antigen proteins of variola, monkeypox, and vaccinia viruses.the structural proteins in purified preparations of variola, monkeypox, and vaccinia viruses were separated and compared by using a high resolution sds-polyacrylamide gel electrophoresis system. about 30 proteins were resolved for each virus by autoradiography of longitudinally-sliced gel rods. although the autoradioelectropherograms of each virus were similar, it was possible to differentiate them by their unique protein pattern in the 30,000 to 40,000 molecular weight region of the gels. a sin ...1977205632
structure of human hemoglobin messenger rna and its relation to hemoglobinopathies.1. one-fifth to 1/4 of globin mrna is untranslated sequence other than polyadenylic acid. 2. the untranslated sequences of mrna vary markedly in their sequence and in their length. 3. globin mrnas demonstrate a marked bias in codon selection. 4. viral mrna shows a quite different pattern of codon selection; therefore, the selection of codons is not uniform for all mrnas functioning in animal cells. 5. elongated hemoglobin chains can be accounted for by frame-shift mutations, or point mutations w ...1977205979
[ergonomy and nursing care: how to chose adequate equipment]. 1977242442
regulation of heme pathway enzymes and cellular glutathione content by metals that do not chelate with tetrapyrroles: blockade of metal effects by thiols.the trace metals nickel and platinum, which are not substrates for ferrochelatase and thus do not form heme in biological systems, were found to act similaryl to cobalt, and heme itself, in regulating heme metabolism in liver and kidney. these metals induced heme oxygenase activity in both organs with the peak of induced enzyme activity reached approximately 16 hr after single injections in rats. both metals caused transient depression of cellular glutathione content followed by increases above ...1977266710
an autoradiographic study of the sensory innervation of teeth. ii. dental pulp and periodontium.autoradiography of axoplasmically transported proteins revealed that both dental pulp and periodontium receive sensory innervation from the trigeminal ganglion in the form of plexuses and free and organized sensory receptors, including apparent corpuscular ones. corpuscular receptors in the pulp suggest this tissue may be responsive to modalities other than pain.1977269163
in vitro enamel demineralization by streptococcus mutans in the presence of salivary pellicles.salivary pellicles developed on extracted teeth favorably affected the degree and nature of enamel demineralization when the teeth were incubated in vitro with either of two pure strains of cariogenic streptococcus mutans. the mechanism responsible for this protection may relate to the permselective properties of these salivary pellicles.1977270509
statistical studies in the aetiology of malignant neoplasms. v. trends and risks. denmark 1943--72. 1977271456
[radioprotective action of aet and mexamine on pentose cycle dehydrogenases]. 1977272004
sensitivity of the vibrios to ultraviolet-radiation.the ultraviolet-inactivation kinetics of a number of strains of vibrio cholerae (classical), vibrio cholerae (el tor), nag vibrios and vibrio parahaemolyticus were investigated. statistical analyses revealed significant differences between any two of the four types of vibrio in respect to their sensitivity to u.v.1977302245
ontogeny of myelopoietic precursor cells in the chicken embryo.the agar culture technique which enables enumeration of myeloid precursor cells was used to establish the time of appearance and further development of these cells in chick embryos. yolk mesenchyme is the largest producer of precursor cells from day 6 to day 17 of incubation. in circulating blood precursor cells probably from the yolk appear at day 9 and stay at fairly high levels till day 17. spleen and bone marrow have high percentage of precursor cells from day 10 till hatching, but afterward ...1977303449
isolation of cryptic plasmid deoxyribonucleic acid from kanagawa-positive strains of vibrio parahaemolyticus.twelve strains of vibrio parahaemolyticus was examined for plasmid deoxyribonucleic acid (dna) by dye-buoyant gradient centrifugation. four kanagawa-positive strains, all isolated from the same outbreak of gastroenteritis, contained multiple plasmid species of cryptic function. however, three kanagawa-negative strains and five kanagawa-positive strains were not found to contain demonstrable plasmid dna. r-plasmids were successfully transferred from escherichia coli to v. parahaemolyticus.1977326675
a rapid method for determining the percentage of antibacterial phagocytes in a sample population of leukocytes. 1977328875
waterborne outbreaks. 1977328941
effect of zinc ion on the hemolytic activity of thermostable direct hemolysin from vibrio parahaemolyticus, streptolysin o, and triton x-100.the effect of zn2+ on hemolysis induced by the thermostable direct hemolysin from vibrio parahaemolyticus (vibriolysin) streptolysin o, and triton x-100 was studied. we found that in certain buffers, such as tris(hydroxymethyl)-aminomethane-hydrochloride, boric acid-borax, and n-hydroxyethyl piperazine-n'-2-ethanesulfonic acid-sodium hydroxide, hemoglobins released from erythrocytes were easily precipitated by addition of zn2+, thus resulting in a false inhibition of hemolysin by zn2+ when hemol ...1977330401
development and use of single "polytropic" diagnostic tubes for the approximate taxonomic grouping of bacteria isolated from foods, water and medicinal preparations.single tubes, containing in all instances a bottom layer of a solid medium for detecting mode of attack on glucose, lactose, mannitol or starch and top layers of solid, semi-solid or liquid media allowing assessment of motility, formation of catalase, oxidase, coagulase, indole, hydrogen sulphide, acetyl methyl carbinol or pigments, as required ("polytropic" diagnostic tubes) were developed for the approximate taxonomic grouping of bacteria commonly encountered in foods, water and medicinal prep ...1977331757
heterophil-negative infectious mononucleosis and mononucleosis-like illnesses. laboratory confirmation of 43 cases. 1977204189
[history, biochemistry, pharmacology and toxicity of cimetidine]. 1977350695
[ontogenetic investigation of cholinergic mechanisms in the dorsal part of the lateral geniculate nucleus (lgn) of the rat (author's transl)]. 1977415489
a bacteriological study of some frozen and nonfrozen foods.over a period of 19 months, a total of 331 food samples were submitted to the food section of the bacteriology division for bacteriological examination. these included 184 samples of frozen seafoods from exporters and 147 samples of fresh, nonfrozen foods from food caterers. the total bacterial count for frozen seafoods ranged from 1 x 10(2) to 2.98 x 10(6) per gm with a mean of 2.14 x 10(5) per gm. coliforms, escherichia coli and staphylococcus aureus were present in 48.9%, 3.3% and 8.2% of the ...1977351818
stopping of the spontaneous beating of mouse and rat myocardial cells in vitro by a toxin from vibrio parahaemolyticus. 1977559094
[role of toxin in vibrio parahaemolyticus infections]. 1977559139
[effects of detergents on flagellation of vibrio parahaemolyticus]. 1977559791
[new k antigen strain of vibrio parahaemolyticus]. 1977559793
[analysis of 012 antigens of vibrio parahaemolyticus strains isolated from cases of food poisoning]. 1977561213
[metabolic system for starch utilization in vibrio parahaemolyticus]. 1977561214
[new serotypes of vibrio parahaemolyticus]. 1977561217
food poisoning due to vibrio parahaemolyticus. 1977580237
Displaying items 601 - 700 of 6009