bacteriophage contamination in calf sera collected by different methods from various sources. 1978755822
disease agents carried by flies in dacca city.studies were conducted to determine the different disease agents naturally carried by flies in dacca city by collecting outdoor unbaited flies from 8 different representative locations and identifying the agents in the laboratory. out of 96 fly pools containing 25 flies each, 62.5%, 46.9%, 15.6%, 8.3%, 8.3%, 15.6% and 6.2% of the pools were found positive for ascaris lumbrioeides, trichuris trichiura, hookworm, enterebious vermicularis eggs and entamoeba coli, trichomonas spp giardia spp. cysts, ...1978757347
pathogenicity of escherichia coli recovered from western nations, pathogenic biotypes are sporadically encountered in foodborne gastroentetis. cholera, dysentery, and chronic ulcerative colitis syndromes are recognized. e. coli has been associated on the average with 2% of annual food outbreaks and 5% of total cases. in developing nations, the incidence may be greater. in contrast with salmonella and shigella, significance can be assessed only by fulfillment of koch's postulates. preliminary studies using vascular permeability reaction for ...1976765322
rare type of shigellosis. 1976765409
extensive urban outbreak caused by antibiotic-sensitive shigella sonnei.during 1970 and 1971, a large increase in the number of isolations of shigella organisms (90% s sonnei) occurred among patients of grady memorial hospital in atlanta. examination of strains isolated during this outbreak showed a marked decline in the frequency of antibiotic resistance, especially multiple resistance, from that which had been observed during the preceding three years, in spite of continued heavy usage of antibiotics. these findings are contrary to most recently reported experienc ...1976765512
trimethoprim-sulfamethoxazole therapy for shigellosis.twenty-eight infants and children hospitalized for severe shigellosis were treated orally either with ampicillin trihydrate (100 mg/kg/day administered in divided doses every six hours) or with trimethoprim-sulfamethoxazole (trimethoprim, 10 mg; sulfamethoxazole, 50 mg/kg/day in divided doses every 12 hours) for five days. four patients with ampicillin-resistant shigellae continued to have diarrhea and positive stool cultures during therapy. patients with susceptible shigellae treated with ampic ...1976765518
[cellular infiltration of shigella]. 1975765541
[antibacterial action by bacteriocin produced by shigella sonnei 100052]. 1975765567
[preparation of colicin produced by shigella sonnei 100052]. 1975765575
[antagonistic effect of actinomycetes to shigella sonneń≠ in the soil]. 1975765688
[activity of various enzyme systems of shigella sonnei]. 1975765696
[phagocytosis of shigellas with hela cells]. 1975765698
[microtubular structures in the cytoplasm of macrophages and their enzymatic activity in interaction with salmonella typhi and shigella dysenteriae]. 1975765699
[rectoromanoscopic pictures in dysentery associated with helminthic diseases]. 1975765713
receptors for t2, t4 and t6 phages in sh. dysenteriae 7 and other serotypes of sh. dysenteriae.the sensitivity of four strains of sh. dysenteriae and of nine strains representing other serotypes of sh. dynsenteriae to phages t2, t4 and t6 was examined. different extracts, prepared from sensitive strains were tested for their capacity of phage inactivation. we found that the receptor substance for phage t2 is localized differently in various strains: in sh. dysenteriae 7, it was found in bacterial extracts obtained by water/phenol at 68 degrees c and in extracts obtained by trichloracetic ...1975766504
[results of a quantitative study of the interaction of pathogenic enterobacteria with a cell monolayer].a study was made of the cytopathic effect and dynamics of intracellular reproduction of s. typhimurium and shigellae in the monolayer of hela cells, macrophages (monocytes) of the peritoneal exudate of rabbits and rats and microphages (granulocytes) of the pleural exudate of rabbits. the presence of bactericidal mechanism in the host cell to the invaded infectious agent is postulated. an important role of the cell component of defence in insensibility in shigellosis is supposed.1975766517
[reactivity and immunogenicity of the sonne dysentery detergent monovaccine].the authors elaborated a method of isolation under industrial conditions of shigella sonnei surface antigens by the treatment of the culture with a detergent (sodium laurylsulfate). the antigens obtained possessed a much lesser toxicity in comparison with the tryptic ones. a method of preparation of a detergent sonne monovaccine with an increased antigen content (1.3 mg/ml) was described. experimental series of the preparation were tested on 38 volunteers. a lower reactogenicity of the detergent ...1975766518
[detection of autoimmune changes in white mice as a method of studying the biological properties of shigella sonnei].an attempt was made of using for the purpose of studying the virulence of sh. sonnei of the method of determination of autoimmune plaque-forming cells in infected albino mice. by the mentioned method a total of 231 strains of sh. sonnei of various biochemical types were examined. the virulence of 103 strains was checked in paralled by the keratoconjunctival test. it was shown that the method of determination of the autoimmune plaque-forming cells in the blood of infected mice could be used as a ...1975766519
[study of the role of colicins in the formation of microbial association in experiments in chick embryos].experiments were conducted on chick embryos; conditions of formation of bacterial cenosis of shigella sonnei and e. coli were reproduced. the role of colicinogenia in the formation of bacterial cenosis was demonstrated. an accumulation of colicines in high titres (1: 5120- 1:2560) in the chick embryonic cavity was noted in combined or separate cultivation of colicinogenic shigellae and e. coli. an intergenera transmission of the col-factor was traced in experiments on chick embryos. the data obt ...1975766520
[serologic interrelations of choleragen and the neurotoxins of enterobacteria].antibodies reacting with the endotoxins of enterobacteria or antibodies to homologous endotoxin were eliminated from the sera to cholerigen, cholerigen-toxoid by precipitin abosrption. sera to neurotoxin of enterobacteria were exhausted in the same way. the exhausted sera continued to form precipitation lines with heterologous toxic complexes. the presence of affiliated antigens in the composition of cholerigen and of shigellae, salmonellae and escherichia neurotoxins was also shown by the metho ...1975766521
[construction of new types of chemical vaccines for the prevention of intestinal infections, and their qualitative assessment. iv. physical properties and immunological characteristics of the experimental series of chemical vaccines presented for comparative study].the authors present the results of study of physico-chemical properties of the chemical sorbed monovaccines from the antigens of the causative agents of typhoid fever, paratyphoid a and b and sonne and flexner dysentery obtained by various methods; the results of investigation of their reactogenic properties and immunological activity of limited groups of volunteers also given. the vaccines from the antigens obtained by sparing methods were less reactogenic than the rest experimental and control ...1975766526
[characteristics of bacteriophages used in the detection of disturbances in the synthesis of the o-antigen polysaccharide of shigella flexneri].a study was made of the sensitivity spectra of various strains of sh. flexneri and r-mutants of various chemotypes to bacteriophages used for lysotyping of shigellae and to some bacteriophages specific of the r-mutants of salmonellae and e. coli. as a result of study there was selected and characterized a collection of bacteriophages specific of the s-strains and r-mutants of shigellae of different chemotypes, which could be used in genetic and immunochemical investigations.1975766530
immunochemical studies on the serotype of shigella flexneri and its recombinant.chemical and serologic analysis of polysaccharides of shigella flexneri 2b and its recombinant revealed complete defect of the gene responsible for type ii specificity as a result of recombination. at the same time, function of the gene in the same locus responsible for 7,8 group specificity was partially inhibited. attenuation of group antigen 7,8, associated with partial uncovering of the structure of the basic chain, causes appearance of a distinct 3,4 group antigen. changes of this type in s ...1975766721
comparative serologic analysis of lac+ recombinants of serotypes 2a, 2b, 5a and variant y of shigella flexneri.the serologic structure of lac+ recombinants of 2a, 2b, 5a and var. y serotypes of sh. flexneri was compared. rec. 2a lac+, rec. 2b lac+ and rec. y lac+ were shown to be identified, and rec. 5a lac+ was found to differ from those mentioned in that it was deficient in determinants for 3,4 group antigen complex. furthermore, the paper discusses the presumable genetic mechanisms of the described variability.1975766722
diagnostic value of indirect hemagglutination in the seroepidemiology of shigella evaluate the usefulness of the indirect hemagglutination (iha) test in the epidemiological investigation of shigellosis, single serum specimens were tested from 50 patients with shigella dysenteriae 1 (shiga bacillus) infections, 103 asymptomatic contacts of these cases, 267 adult and 100 student control, and serum specimens collected during two outbreaks caused by s. sonnei and one outbreak due to s. flexneri 6. in patients with s. dysenteriae 1, 74% demonstrated titers of greater than or eq ...1976767361
unusual enterobacteriaceae: h2s+ shigella sonnei, one authentic and one false positive due to contamination with the obligate anaerobe eubacterium lentum.a mixture of shigella sonnei and eubacterium lentum produced h2s in triple sugar iron agar; however, neither produced any in pure culture. a second culture of s. sonnei, isolated in japan, is thought to be the first documented h2s+ shigella.1976767362
effect of isolation media on recovery of rough variants of salmonella.preferential inhibition of rough variants of salmonella was observed with tetrathionate and selenite-f broths and with salmonella shigella agar. these results suggest that rough strains of salmonella may be more prevalent in nature than previously suspected.1976769121
[phagocytosis of shigellae sonnei, isolated from patients with dysentery and healthy persons, in the culture of peritoneal macrophages]. 1975769337
an epidemic of gastroenteritis traced to a contaminated public water supply.between january 1 and march 15, 1974, approximately 1200 cases of acute gastrointestinal illness occurred in richmond heights, florida, a residential community of 6500 in south dade county. over one-third of all families in the area had at least one member affected. the findings of 10 culture-proven cases of shigellosis among those who became ill and clinical signs and symptoms in the others suggest that most of the other cases that were not cultured may have been shigellosis also. epidemiologic ...1976769540
[intestinal localization of shigellae in dysentery and experimental shigellosis].the investigation of 53 section cases of dysentery and 18 biopsy specimens of the large intestine in acute dysentery in children showed that intrapithelial distribution of shigella was not always regular. in studies of experimental shigellosis on isolated loops of the intestine 459 segments of the intestine of 51 rabbits were investigated. the results obtained showed that shigella multiplied mainly in the lumen of the intestine. the increase in number of shigella in enterocytes was by 8-9 orders ...1976769758
[bacteriological and epidemiological considerations on shigelloses in south vietnam (1969-1973)].during the period from 1969 to 1973, a rectal swabs from 13.943 diarrhea patients of all ages were examined by bacteriological surveys. from these specimens, 981 strains of shigella were isolated. the most commonly encounted were shigella flexneri 2. all of strains of shigella isolated were highly resistant to aureomycin, tetracyclin, terramycin, novobiocin and chloramphenicol. there has been an increase in the development of multiresistance of shigella. colimycin and streptomycin were the most ...1975770024
isolation and analysis of the lipid a backbone. lipid a structure of lipopolysaccharides from various bacterial groups.a degradation procedure of lipopolysaccharides was worked out which allows the isolation of the reduced backbone of lipid a in a total yield of between 20 and 30%. this procedure was applied to lipopolysaccharides of s forms (salmonella minnesota, shigella flexneri 5b, escherichia coli 086, e. coli 0111, xanthomonas sinensis, rhodopseudomonas gelatinosa) and r mutants (salmonella minnesota, shigella flexneri, 5b, e. coli bb9 and e. coli eh 100). chemical analysis, reaction with beta-n-acetyl-glu ...1976770165
colicine typing in the epidemiology of bacillary dysentery. 1975770220
a perspective on the use of antibiotics in animal feeds. 1976770412
naturally occurring sites within the shigella dysenteriae tryptophan operon severely limit tryptophan biosynthesis.we investigated the structural, functional, and regulatory properties of the shigella dysenteriae tryptophan (trp.) operon in transduction hybrids in which the cysb-trp-region of escherichia coli is replaced by the corresponding region from s. dysenteriae. tryptophan biosynthesis was largely blocked in the hybrids, although the order of the structural genes was identical with that of e. coli. nutritional tests and enzyme assays revealed that the hybrids produced a defective anthranilate synthet ...1976770449
tryptophan operon regulation in interspecific hybrids of enteric bacteria.we examined tryptophan regulation in merodiploid hybrids in which a plasmid carrying the trp operon of escherichia was introduced into trp mutants of other enteric genera, or in which a plasmid carrying the trpr+ (repressor) gene of e. coli was transfered into fully constitutive trpr mutants of other genera. in these hybrids the trp operon of one species is controlled by the repressor of a different species. similar investigations were possible in transduction hybrids in which either the trp ope ...1976770450
resistance of shigella dysenteriae type 1 to ampicillin and other antimicrobial agents: strains isolated during a dysentery outbreak in a hospital in mexico june 1972, an epidemic of dysentery began in a hospital ward lodging 22 children with tuberculosis. fifteen of them developed the disease and five children died. the age of the children ranged from five months to four years. a rectal swab culture taken from all hospitalized children three weeks after the initiation of the outbreak revealed shigella dysenteriae type 1 in five of the patients (28%). the strains isolated were susceptible to cephalothin, gentamicin, kanamycin, colistin, trimethop ...1976772132
travelers' diarrhea in mexico. a prospective study of physicians and family members attending a congress.we conducted a prospective study of travelers' diarrhea on 73 physicians and 48 family members attending a medical congress in mexico city, in october, 1974. fecal and blood specimens were collected before, during and after their visit and examined for enteric bacterial pathogens, viruses and parasites. in 59 (49 per cent) participants travelers' diarrhea developed. median duration of illness was five days. onset occurred a median of six days after arrival. an etiologic agent was found in 63 per ...1976772435
transfer of drug resistance factor in shigella sonnei isolated in iran.the pattern of drug resistance and incidence of r-factors were studied in shigella sonnei strains isolated in iran. eighty-nine out of 172 strains (51.7%) were resistant to one or more drugs and multiple drug resistance was more common than single drug resistance. the most predominant pattern of resistance observed was (tc, cm, sm, su). by mixed cultivation, 85.7% of shigella sonnei resistant strains isolated on the central plateau and 100% of the strains from the caspian littoral transferred at ...1976772518
[observations on the sensitivity to antibiotics of the shigella isolated from patients in 1966-1973].sensitivity to levomycetin, streptomycin, chlortetracycline, oxytetracycline, monomycin, neomycin and erythromycin of 3766 strains of shigella isolated from dysentery patients within 1966-1973 was determined with the method of standard discs. the strains proved to be resistant to tetracycline (94.3-99.4 per cent), streptomycin (85.1-94.9 per cent) and levomycetin (69-93.1 percent). by present the dysentery bacilli have preserved their sensitivity to monomycin (88.2 per cent) and neomycin (98.2 p ...1975773290
[the influence of several prophages on the genetic behavior of flexner dysentery bacteria].in conjugation experiments of escherichia coli k-12 hfr strains and converted clones of shigella flexneri var. y(-:3,4) that had acquired the capacity to synthesize type of antigens iv or v it is confirmed that the locus linked to lac-pro region in sh. flexneri chromosome called tp locus is a site of an attachment of prophages responsible for certain type specific antigens. lac+ hybrids of the clone converted by phage iv lost the type specific antigen iv with the frequency comparable with the lo ...1975773758
shigella hepatitis. 1976775138
[one-stage method of identification of salmonella and shigella by biochemichal test. i. evaluation and selection of differentiating test]. 1976775223
[correlation between biochemical features and pathogenicity of shigella. iv. threonine deaminase of shigella strains producing and not producing keratoconjunctivitis in guinea pigs]. 1976775224
toxigenic escherichia coli and childhood diarrhea.stool specimens were examined from 40 children with diarrhea who were under three years of age to determine the incidence of enterotoxigenic escherichia coli in endemic diarrhea. heat-labile e. coli enterotoxin was assayed in the very sensitive and reproducible cultured adrenal tumor cell system. toxigenic e. coli were isolated from only one stool specimen and in this case infection with shigella dysenteriae was also present. none of the eight classic enteropathogenic e. coli isolates were posit ...1976775792
[characteristics of the salmonella and shigella strains isolated from diarrhea patients during antibiotic therapy].drug resistant strains of salmonella and shigella were isolated from diarrhoeic children during antibiotic treatment. two strains of sh. flexneri serotype 2a, resistant to sulfonamides, streptomycin,chloramphenicol, and tetracyclines, were able to transfer "en bloc" their resistances to e. coli k12.1975776095
studies on the survival of shigella flexneri in river and tap water. 1975776123
strain-related differences in immunosuppressive effects of enterobacteriaceae and their lipopolysaccharides on production in rabbits of antibody to enterobacterial common antigen.certain polysaccharides have been shown to inhibit the antibody response of rabbits to the common enterobacterial antigen (ca). the present investigation revealed that striking differences exist in the immunosuppressive effects of enteric bacteria and their lipolysaccharides (lps), depending upon ca production by the strains. mixtures of immunogenic strains (escherichia coli f2378 [r4], e. coli f470 [r1], or shigella boydii f3140 [r]) and non-immunogenic ca-producing strains, such as e. coli o1, ...1976776827
shigella flexneri 6 biotypes: a review.except in gas production, s. flexneri 6 is generally similar to other s. flexneri. s. flexneri 6 contains both aerogenic and anaerogenic strains which are identical serologically. it is not surprising that s. flexneri 6 is not separable from other s. flexneri types on the basis of dna relatedness (overall genetic makeup) (4). the manchester biotype is seen in the united states, and is easily separable from other enterobacteriaceae by biochemical tests. one can no longer assume à priori that any ...1976776900
isolation of salmonellas and shigella sonnei from a laboratory area of the laboratory bench on which slide agglutinations were performed in the diagnosis of salmonella and shigella infection was examined for these organisms. impression plates and broth-moistened swabs were used for sampling. both techniques gave satisfactory results, but the contact plates provided positive results a day earlier than the swabs. suitable precautions to minimize contamination of the bench surface are discussed.1976778256
proceedings: on new biological responses of conventional adult mice administrated with bacterial endotoxin. 1975778449
[immunochemical and molecular biological characteristics of dysentery phages].molecular organization of dna of six dysentery phages was studied for their classification. the pattern of glucosilation of their dna was determined by an immunochemical method and the test of competitive hybridization established the degree of homology of these dna in relation to t4 phage dna. four of the phages (ddvi, zonne "gorkyi" zonne "czechoslovakia", zonne "poland") were shown to belong to the group of t-even phages by their pattern of dna glucosilation and by their capacity to inhibit ...1976779271
[importation of shigelloses into the german democratic republic]. 1975779290
shigellosis in custodial institutions. v. effect of intervention with streptomycin-dependent shigella sonnei vaccine in an institution with endemic disease.a double-blind controlled field trial of live, oral, streptomycin-dependent shigella sonnei vaccine was begun in an institution with endemic s. sonnei disease. considerable unexpected child-to-child transmission of the vaccine strains inadvertantly caused the field trial to resemble a mass vaccination campaign. although s. sonnei accounted for 90% of shigella infections from 1968 to 1971 and three-fourths of the cases occurred in the seven study cottages, s. sonnei disease disappeared following ...1976779465
a bacteriological study of the intestinal mucosa and luminal fluid of adults with acute diarrhoea.bacteriological studies of jejunal mucosal biopsy specimens and contents were performed on 22 hospitalized adult patients with acute diarrhoea and 24 control normal subjects. none of the washed homogenates of the mucosal specimens were sterile and only one fluid specimen obtained from a control subject was sterile. a definite enteric pathogen was found in only five of the 22 diarrhoea patients. there was no qualitative difference in the bacterial profile of the jejunal mucosa and contents of the ...1976779681
methylated guanine derivative as a minor base in the dna of phage ddvi shigella disenteriae.7-methylguanine has been identified in the dna of phage ddvi, which replicates in escherichia coli b cells. the amount of this minor base is 0.27 mol per 100 mol of nucleotides. in the dna of ddvi phage there is no 6-methylaminopurine which is usually a minor component in the dna of e. coli b and phage t2, yet the dna of ddvi phage is readily methylated during incubation in vitro with the b-specific methylase and adenosyl[3h]methionine with the label found only in 6-methylaminopurine. an extract ...1976779843
proceedings: inactivation and mutation of cultured mammalian cells by radiations of different let. 1976779917
[purification and molecular morphology of a colicin produced by shigella sonnei strain 100052 (author's transl)]. 1976780245
[fatty acid composition of bacteria of the genera escherichia, salmonella and shigella]. 1976780393
shigella dysentery with secondary klebsiella sepsis. 1976781203
semisynthetic cephalosporins. synthesis and structure-activity relationships of 7-sulfonylacetamido-3-cephem-4-carboxylic acids.the synthesis and in vitro and in vivo activities of a series of 7-sulfonylacetamido-3-cephem-4-carboxylic acids with acetoxymethyl or heterocyclic thiomethyl substituents at the 3 position are described. lengthening the alkyl chain attached to the sulfonyl group increased gram-positive activity but the effect on gram-negative activity was variable. other structural changes on the 7-acyl side chain resulted in only minor changes in vitro activity. the protective effectiveness in infected mice g ...1976781242
particles found in the mitomycin-induced culture fluid of a strain of shigella sonnei and their relation to the bacteriocin activity. 1975781349
[amino acid decarboxylase activity in shigella sonnei and its relationship to virulence]. 1976781485
[experimental study of an associated infection induced by coxsackie viruses and dysentery bacteria]. 1976781489
serum amylase in rats following the administration of endotoxin. 1976781914
[an electron microscopic study of the interaction between shigellae and cell cultures. ii. structuro-functional response of the chief cytoplasmic organoids of infected cells].the initial mobilization of the protective power of amniotic cells under the influence of the intracellular parasite shigellae flexner was shown using qualitative and quantitative methods of electron microscopy. this mobilization is seen in the appearance and then concentration of membrane elements of the endoplasmic reticulum around the bacteria. the character of some degenerating changes confirms the opinion about the presence of an excreting endotoxin fraction in shigellae flexner.1975781958
[the role of the water factor in the spread of dysentery on river vessels].results of epidemiological and statistical analysis of the indices of dysentery morbidity and bacteriological examination of drinking water pointed to the significant role of the water factor in the spread of dysentery on the river vessels.1976782097
[the possibility of using the ht for the purpose of detecting sonne shigellae in milk]. 1976782104
[grigor'ev-shiga dysentery and the current trends in its spread]. 1976782107
[increasing the frequency of the transmission of antibiotic resistance in bacteria through their centrifugal sedimentation]. 1976782110
[use of the vshs elective-differential medium in the diagnosis of dysentery and other acute intestinal infections].results of trial of the vshs medium under conditions of direct seeding feces of patients suffering from dysentery and other acute intestinal disturbances demonstrated that by the efficacy of sh. sonnei isolation it failed to differ from ploskirev's bactoagar, was less effective in comparison with levin's medium with levomycetin (the incidence of shigella isolation was 49.7, 52.6 and 60.3%, respectively) and was the most effective in sh. newcastle isolation. in seeding feces after their enrichmen ...1976782114
beta-lactamase activity in shigella sonnei.the basis of ampicillin resistance in shigella sonnei was analyzed for a number of isolates. most isolates that were resistant to ampicillin and cephalothin failed to transfer resistance. isolates resistant to cephalothin and ampicillin were inhibited by mecillinam, cefamandole, and cefoxitin. six strains were selected for study. these differed on the basis of inhibition by 10 beta-lactam antibiotics and on differences in beta-lactamase activity. there was no correlation between the inhibitory c ...1976782355
intraventricular antipyretics and bacterial pyrogen adult fowls with cannulae chronically implanted into the iiird cerebral ventricle or into the hypothalamus, the effects of various hydrosoluble antipyretics, given intraventricularly, on bacterial pyrogen fever were studied. it has been shown that fever evoked by intrahypothalamic or intraventricular infusion of o somatic antigen of shigella dysenteriae was reduced by intraventricular administration of acetylsalicylate-lysine, indomethacin-methylglucamine or ibuprofen-lysine given during the ...1976782392
antigenicity testing of inactivated oral enteric bacterial vaccines for human use.this study deals with the laboratory testing of the antigenicity of inactivated oral enteric bacterial vaccines for human use, viz. typhoid, dysentery, escherichia coli and cholera vaccines. for the assays the following methods are applied : 1) various types of active mouse protection tests 2) serum and coproantibody determinations in immunized persons and experimental animals, 3) protective ability of the immune sera in mice and embryonated eggs, 4) hemolytic and bacteriolytic plaque assays. it ...1976782974
shigella dysenteriae i: a forgotten cause of pseudomembranous colitis. 1976784931
[effects of r factors on virulence of the host bacteria: virulence of salmonella lt-2 in mice with transfer of r factors from shigella strains]. 1976785058
[use of the antiglobulin test for the purpose of detecting antibodies to enteropathogenic bacteria in biological fluids].use of ihat with the addition of antiserum to immunoglobulins g, m, a increased the frequency of detection of antibodies to enteropathogenic bacteria in various biological fluids (blood, saliva, human milk, feces). at the same time the antiglobulin test permitted determination of the immunological class of these antibodies. in the substrates where the antibodies were subjected to an intensive action of proteolytic enzymes there was seen a decrease of the efficacy of the modified ihat, but by res ...1976785878
[epidemiology of bacterial dysentery in the usa]. 1976785885
[antibody-containing cells in the mucosa of the large intestine of patients with acute bacterial dysentery].the authors traced the dynamics of appearance, increase and disappearance of o-antibody-containing cells in the mucosa of the distal portion of the large intestine in patients suffering from acute sonne and flexner dysentery (aspiration biopsy of the mucosa). the antibodies were revealed by the indirect coons method. the total number of cells per 1 mm2 of 4 mum of the mucosal section the number of lymphoid cells and the content of the antibody-containing cells in % per total cell count of the ly ...1976785886
[feasibility of treating sonne dysentery patients at home].results of studying possibility of treatment of 589 patients suffering from sonne dysentery at home showed that their significance in the spread of infection was not greater than that of those treated at the hospital. significance of the patients in the spread of infection in a family was determined by their age, severity of the disease, number and duration of excretion of the causative agent. it was concluded that patients with forme frustes or subclinical form of sonne dysentery and also those ...1976785887
[amino acid composition of the cell wall peptidoglycans of sonne shigellae and typhoid bacteria]. 1976785894
fecal steroids in diarrhea. i. acute shigellosis.fecal bile acid and neutral sterol patterns of five healthy adult male volunteers, who were challenged by a virulent shigella flexneri 2a (m42-43) strain and developed dysentery were studied. it was observed that cholic acid was increased from 1.9 +/- 0.4% of total bile acid in the feces before infection to 14.5 +/- 2.1% during diarrhea (p less than 0.001). chenodeoxycholic acid also was increased from 3.2 +/- 0.7 to 8.7 +/- 3.2% in diarrhea but the difference was not significant statistically. ...1976786002
immune processes in the course of infection with dysentery bacilli. i. transfer of immunity by means of spleen cells.studies on the mechanisms of immune phenomena in the course of infections with dysentery bacilli in mice showed that injection of live shigella sonnei phase i bacilli intravenously evokes the appearance in the spleen of cells by means of which immunity to a lethal dose of these microorganisms can be transferred into other mice. immunity to a lethal dose of the bacteria was measured by the number of animals surviving the infection, and by the numbers of bacteria isolated from the organs of the an ...1976786209
immune processes in the course of infection with dysentery bacilli. ii. transfer of immunity by means of serum.the role of antibodies in immunity to intravenous infection with dysentery bacilli was studied in mice. serum from animals immunized with a single dose of live dysentery bacilli obtained at a varying intervals of time after immunization transferred immunity to other mice infected with lethal doses of the same bacilli. passive immunity transferred with serum was diffrentiated. sera obtained 4 to 8 days after immunization of the donors with sublethal doses of live shigella sonnei phase i bacilli p ...1976786210
inhibition of in vitro protein synthesis by shigella dysenteriae 1 toxin. 1976786292
effect of enterotoxins of vibrio cholerae, escherichia coli, and shigella dysenteriae type 1 on fluid and electrolyte transport in the colon.experiments were designed to determine whether the enterotoxins of vibrio cholerae, escherichia coli, and shigella dysenteriae type 1 alter the movement of fluid and electrolytes in the rat cecum. net secretion of water and sodium were observed after incubation of 1.67 x10(-5) mug of purified cholera toxin (choleragen)/ml for 18 hr or of 50 mug/ml for 3 hr. the effect of choleragen on cecal transport of water and electrolytes was related to the dose. in addition, choleragen increased cecal mucos ...1976787442
shigellosis from augsut 1974, 31 of 45 cases of shigella sonnei infection in dubuque, iowa, were traced to swimming in an 8-km stretch of the mississippi river. comparison of the first case in each affected family with neighborhood controls showed a significant correlation between swimming and illness (p less than .0001). a significant association between diarrheal illness and swimming (p less than .0001) was also demonstrated by a retrospective survey of 60 families who had camped at a park beside the river; ...1976787562
[cytochemical changes in the peritoneal macrophages of mice infected with shigella sonnei]. 1976787734
[causes of the prevalent spread of dysentery sonnei]. 1976788337
the anodically-moving thermolabile antigen (ata) of gram-negative bacteria: its function as the receptor for f pili. 1976788356
epidemic shigellosis on a worktrain in epidemic of shigellosis occurred on a worktrain in western labrador in october 1974. during the outbreak 62 persons out of a crew of 91 became ill, 11 having recurrent illness; 14 were hospitalized. epidemiologic analysis with laboratory confirmation implicated unchlorinated and contaminated lake water as the source of the epidemic. faulty design of water storage tanks perpetuated the use of contaminated water; hence a second wave of illness occurred. the tanks were then thoroughly drained, c ...1976788882
[ 771 shigella strains isolated in a 15-year period from americans living in ankara. comparisons with shigella strains isolated from turkish natives].the author had worked as a bacteriologist in ankara american air force hospital from 1958 to 1972. during this period of time he was able to isolate 771 shigella strains from the american patients of the hospital. the amounts and the percentages of the subgroups are listed below together with the two other ankara city pediatric hospital results (see article). american community lived in ankara for 15 years and shared many aspects which were important in shigella epidemiology like using city's ta ...1976790107
travelers' diarrhea: new developments. 1976790143
[shigellosis in tucumán].in 731 diarrhea cases studied from january 1971 to june 1973 in tucumán a significant increase of shigellosis in eutrophic children was observed. the frequency of shigella isolations, considering all the enteropathogens found, were: 15,5 %; 13 % and 21,3 % in 1971, 1972 and 1973, respectively (table 1). all the strains of shigella isolated belonged to the shigella flexneri b or shigella sonnei d groups, being the percentage for the former 78 % in 1971; 93 % in 1972 and 77 % in 1973 (table 2). th ...1975790480
shigellosis transmitted by nurses.twelve cases of shigella sonnei infection, with two deaths, occurred at a custodial institution in donelson, tennessee, in april and may 1973. nine of the cases and both deaths were in patients hospitalized at the institution's infirmary. the patients with nosocomial shigellosis were significantly younger and had been hospitalized significantly longer than controls. epidemiologic investigation implicated staff members in the transmission of illness from one patient to another and identified the ...1976790590
experimental techniques in the determination of aetiology of acute infantile gastroenteritis.techniques used in the research laboratory for the microbiological diagnosis of infantile gastroenteritis are described. these techniques are in essence experimental models of the three pathogenetic mechanisms of bacterial diarrhoea. from the clinical bacteriological standpoint, although there is little difficulty with the identification of enteropathic bacteria such as salmonella and shigella, the differentiation of enteropathic strains of escherichia coli from commensal strains is not possible ...1976790602
[role of stewed fruit-berries as a factor in the transmission of dysentery toxinfectious diseases].experimental investigations aimed at working out methods for quantification of sh. sonnei in experimentally infected stewed fruits and berries are described and the ways for educing the epidemiological hazards of a compote prepared by failing to comply with proper heat treatment - idicated. the presently proposed by the author procedure for bacteriological analysis of an infected compote is shown to be sensitive enough, for it enables one to count 10(2) and more shigella cells in 1 ml of compote ...1976790769
[cytotoxic factor of flexner shigella, its biologic function and genetic control]. 1976790817
[role of the cytotoxicity of shigellae in the infectious process]. 1976790818
[realization of the cytotoxic properties of flexner shigellae in a macrophage culture at the cellular and subcellular level]. 1976790819
Displaying items 701 - 800 of 13650