| enhanced mononuclear phagocytic activity during trypanosoma cruzi infection in mice. | it has been shown that trypanosoma cruzi-infected mice develop a nonspecific resistance to challenge with an unrelated microorganism, namely, listeria monocytogenes. this increased resistance to listeria was observed on the 4th day of trypanosoma infection and persisted for at least 25 days. it was associated with an increased mononuclear phagocytic activity, as revealed by carbon clearance experiments. the possibility that macrophages of the infected host become activated by a process which app ... | 1976 | 812831 |
| neonatal listeriosis: distribution of serotypes in relation to age at onset of disease. | | 1976 | 812974 |
| genital listeriosis (a case report). | | 1975 | 812986 |
| mechanisms of protective immunity in experimental cutaneous leishmaniasis of the guinea-pig. i. lack of effects of immune lymphocytes and of activated macrophages. | leishmania enriettii is an obligatory intracellular protozoan parasite which infects guinea-pigs and resides in macrophages. subcutaneous inoculation produces a skin infection which heals spontaneously and leaves the animal immune to reinfection. experiments have been performed to explore the mechanisms of parasite destruction in the recovering and immune animal. using quantitative techniques to assess parasite survival it was found that l. enriettii is not killed in vitro in macrophages from im ... | 1975 | 813928 |
| listeria sepsis immediately preceding renal transplant rejection. | | 1976 | 814260 |
| [dynamics of multiplication and changes in the virulence of various pathogenic microorganisms in milk and milk products]. | | 1975 | 814792 |
| listeria cell wall fraction: a b cell adjuvant. | a crude cell wall-rich fraction of listeria monocytogenes (lcwf) has previously been shown to induce resistance to listeria infection in mice, to be a murine b cell mitogen, and to be an immunologic adjuvant. data reported here show that lcwf stimulates immune responses by three different murine b cell populations that respond poorly or not at all to thymus-dependent antigens when t cells are severely depleted or absent. these b cell populations include nude mouse spleen cells, anti-theta serum- ... | 1976 | 815429 |
| [bacteriological and pathohistological studies of sheep experimentally infected with listeria]. | a total of forty gimmers (eight of which spleen-ectomized) were i/v, orally, intratracheally, and along the branching of n. infraorbitalis infected with a 24-hour broth culture of listeria monocytogenes. the meningoencephalite form of listeriosis was induced in two of the animals infected intraveneously, in one animal of those infected orally, and in one of those infected in the branching of nervus infraorbitalis. the most typical microscopic changes were established in the case of infection thr ... | 1976 | 816052 |
| [pseudomonas aeruginosa in the feces of healthy man (author's transl)]. | by means of a selective medium described for the isolation of listeria monocytogenes (nalidixic acid - trypaflavin - serum agar) 18 strains of ps. aeruginosa have been obtained from the feces of 344 healthy adults (5.2%). | 1975 | 816111 |
| [the effect of an inflammatory reaction on the resistance of mice to infection by listeria monocytogenes and salmonella typhimurium]. | following subcutaneous acute inflammatory reactions in mice, the blood clearance of virulent salmonella typhimurium was enhanced and the multiplication of listeria monocytogenes in spleen and liver was decreased. | 1975 | 816520 |
| [laboratory diagnosis of listeriosis in the light of 3 cases]. | | 1976 | 816635 |
| perinatal listeriosis: a bacteriological and serological study. | | 1975 | 816738 |
| cerebral abscess due to listeria monocytogenes. | a case of cerebral abscess due to listeria monocytogenes in a patient receiving immunosuppressive treatment is reported. early diagnosis was facilitated by a cerebral scan. | 1976 | 817114 |
| [ultrastructure of l forms. report 5. localization of dehydrogenase activity in l form cells]. | a study was made of deposition of diformazan tnbt and tcnbt in the presence of succinate and without it in stable l-forms of str. pyogenes group a, st. aureus and l. monocytogenes. diformazan proved to deposit on the cytoplasmic membrane, in the lamellar mesosomes and myelin-like structures and also on individual intracellulor membranes not forming special membrane organoids. diformazan was localized on the membranes mostly asymmetrically, on the cytoplasmic membrane-on its internal side, and on ... | 1976 | 817550 |
| listeriosis. | four patients with listeria monocytogenes infection are presented; three of whom had associated lymphoproliferative disorders. two of the four patients had listeria meningitis. meningitis is the most common manifestation of listeriosis in humans. specific diagnosis depends on demonstrating listeria monocytogenes in the cerebral spinal fluid; differentiation from other forms of acute meningitis cannot be made clinically. although listeriosis is recognized as a major global problem in both human a ... | 1976 | 817600 |
| t-cell-mediated immunity. | | 1975 | 817669 |
| antimicrobial activity of econazole and miconazole in vitro and in experimental candidiasis and aspergillosis. | the antibacterial and antimycotic activity of econazole base, an imidazole derivative, was examined in vitro and in experimental infections of mice. comparative minimal inhibitory concentration (mic) determinations indicate econazole as well as miconazole to be of moderate activity against gram-positive bacteria (mics: 0.78-25mug/ml) and yeasts (mics: 1.56-25 mug/ml). against filamentous fungi, econazole exhibits better in vitro activity than miconazole and - with the exception of rhizopus oryza ... | 1976 | 817875 |
| bactericidal properties of human cell-free lymph. | the bactericidal properties of human cell-free lymph have been investigated. gram-negative and gram-positive bacteria are susceptible to the killing action of lymph fluid. the colony-forming ability of escherichia coli and bacillus subtilis was reduced by 3 logs after 20 min of incubation with 10% (vol/vol) lymph. salmonella and listeria were less susceptible to killing. the presence of multiple killing factors in lymph showing different specificities for different bacterial cells was demonstrat ... | 1976 | 818015 |
| immunosuppressive activity of an extract of listeria monocytogenes. | the effects of treatment of mice with an aqueous extract of listeria monocytogenes on lymphoid populations and on immune responsiveness were studied. thymus weight was decreased to a third of the control, whereas spleen weight was proportionally increased as the number of treatments was increased. the total numbers of cells in the thymus and bone marrow were diminished, whereas the number in the spleen was increased. serum hemolysin production and plaque-forming cell response to sheep erythrocyt ... | 1976 | 818028 |
| disparity in origin of mononuclear phagocyte populations. | | 1976 | 818376 |
| occurrence of listeria monocytogenes in feces of pregnant women with and without direct animal contact. | women under policlinic control during their pregnancy were divided into 3 groups, viz. women living on farms with animals, women having pet-animals in their home and women without any direct contact with living animsla. 5-7 feces samples were controlled for l. monocytogenes during pregnancy and puerperium, together with one sample of meconium of the neonate. of women from farms, with pet-animals and women without living animal contact, respectively 32%, 39% and 34% of the samples were positive. ... | 1976 | 818853 |
| [the listeria monocytogenes carrier state of the staff of maternity centres in non epidemic periods (author's transl)]. | 9 of 177 examined healthy adults working in maternity centers were found to be listeria monocytogenes carriers, every examined person worked by profession in maternity departments in areas free of human epidemic. after one year (4 degrees c), the bacterium was cultivated from their faeces in culture media containing either rivanol or trypaflavin. | 1976 | 818854 |
| listeria-encefalitis in cows through litter from a broiler-farm. | in a loose-housed herd four cows are emergency-slaughtered, within some weeks, because of symptoms of encefalitis. from the brains of these cows, as well as from the litter, coming from broilers, that had been put in the cow-stables before, listeria monocytogenes type 4b has been isolated. at the same time an investigation was made from faeces/intestinal contents of broilers. out of the contents of 2.373 intestines, 1% of about 2.300.000 broilers ready for use, coming from 146 farms, 4.1% l.mono ... | 1976 | 818856 |
| effects of listeria monocytogenes and its components on adenosine triphosphate concentrations in mice. | the effects of listeria monocytogenes and its components on adenosine triphosphate (atp) concentrations in mice were examined by in vitro and in vivo techniques. white female mice were intraperitoneally injected with l monocytogenes strain 9-125 and its components, and certain tissues of mice were exposed to the various listerial components in vitro, and the atp concentrations in these tissues were measured. results of in vivo experiments indicated that live listerial cells and certain component ... | 1976 | 818928 |
| [listeria monocytogenes infection]. | the authors report two newborn infants, one with sepsis and the other one with meningitis, discussing clinical and epidemiological aspects of this infection. | 1976 | 819020 |
| letter: endocarditis of aortic valvular prosthesis due to listeria monocytogenes. | | 1976 | 819225 |
| cell-mediated immune response to salmonella typhimurium infection in mice: development of nonspecific bactericidal activity against listeria monocytogenes. | generation of the cell-mediated immune response of cba/h mice against salmonella typhimurium (c5s) was monitored by measuring the nonspecifically increased bactericidal activity of macrophages against listeria monocytogenes. the appearance of detectable levels of macrophage activation was inversely related to the initiating infectious dose. with 3 x 10(3) infecting c5s organisms, significant activity was demonstrable after day 3. immunity controlled a challenge with a streptomycin-resistant stra ... | 1976 | 819372 |
| polymorphonuclear leukocyte, monocyte, and macrophage bactericidal function in patients with hodgkin's disease. | to determine if the susceptibility of patients with lymphoma, particularly hodgkin's lymphoma, is related to an abnormality in leukocyte function, the serum, neutrophils, and monocytes from a group of 29 patients with all stages of untreated hodgkin's disease were studied simultaneously with a group of normal subjects. the patients' neutrophils and serum functioned normally in the killing of e. coli, s. aureus, l. monocytogenes, and s. typhimurium. the killing of e. coli and listeria by their mo ... | 1976 | 819604 |
| in vitro effects of listerial hemolysin on rat brain mitochondria. | crude hemolysin derived from listeria monocytogenes, strains 9-125 and 1122-3, reduced phosphate utilization of rat brain mitochondria in a succinate system. oxidation rates were not altered by addition of hemolysin to a concentration of 42 hemolytic units/ml, with a mitochondrial protein concentration of 2.3 mg/ml. at a mitochondrial protein concentration of 1.8 mg/ml, 42 hemolytic units/ml of hemolysin increased the inhibition of phosphate utilization and also reduced the oxygen uptake. an age ... | 1976 | 820225 |
| cortisone-resistant effector t cells in acute lymphocytic choriomeningitis and listeria monocytogenes infection of mice. | sensitized t cells in both lymphocytic choriomeningitis (lcm) and listeriosis are apparently unaffected by treatment of mice with cortisone acetate. cortisone-resistant immune t cells readily transfer acute, fatal lcm or protection against l. monocytogenes infection. treatment of recipient mice with cortisone, however, impairs t cell-dependent effector mechanisms (i.e. macrophages) in listeriosis, but has no effect on induction of lcm. acute lcm may thus represent a t cell-mediated pathological ... | 1975 | 820320 |
| [listeriosis in a riding-horse stock]. | | 1976 | 820329 |
| the mediator of cellular immunity. xi. origin and development of mif producing lymphocytes. | | 1976 | 820434 |
| acute listeria monocytogenes osteomyelitis. | the presentation and management of a case of acute listeria monocytogenes osteomyelitis in a lady with acute lymphoblastic leukaemia are described. the literature on listeria infection is briefly reviewed, and the importance of scrutinizing diphtheroid-like isolates in the laboratory is stressed. | 1976 | 820648 |
| maternal listeria monocytogenes septicemia with sparing of the fetus. | a case of maternal listeria monocytogenes septicemia at 19 week's gestation is presented. successful treatment of the mother with ampicillin resulted in remission of maternal symptoms and subsequent term delivery of an unaffected infant, indicating fetal disease is not an inevitable consequence of maternal listeria sepsis. | 1976 | 821025 |
| [histological study of ceratophyllus consimilis wagn. fleas infected with the causative agent of listeriosis (listeria monocytogenes)]. | histological studies have shown that in experimentally infected fleas (c. consimilis) listeria are preserved in the alimentary canal. in infected individuals microbes occur along the whole intestine, from oesophagus to the rectum but most often they are recorded from the mid-gut and proventriculus. listeria are able to penetrate into its muscular tissue and in some cases enter the body cavity of the insect. the finding of listeria in the oesophagus confirms the possibility of the transmission of ... | 1976 | 821031 |
| stimulation of the non-specific resistance by corynebacterium parvum and bacillus calmette guérin. | the effect of pretreatment of intravenously administered killed corynebacterium parvum (cp) and living bcg was studied in various model systems. both vaccines caused an increased resistance to listeria monocytogenes, indicating macrophage activation. only cp exerted a suppressive effect on t-cell-mediated immunological phenomena (skin allograft survival; antibody production to tetanus toxoid; expulsion of adult t. spiralis worms from intestine). results of experiments with congenitally athymic ( ... | 1976 | 821172 |
| [some biochemical studies of listeria monocytogenes strains]. | a total of 231 strains of listeria organisms have been isolated during the last 14 years from adult sheep, lambs, fetuses, and ensilaged forage. their differentiation have shown that 67 of them belong to the 1 st serotype, 77 -- to 4 c, and 26 have been determined as strains of the 5th serotype. the biochemical study on 170 of the strains have revealed that: more of them, belong to the 1 st, 4 c, and 5 th serotype break down dextrose, trehalose, levulose, salycin, esculin, ramnose, and glycerin. ... | 1976 | 821209 |
| [detection of h-antibodies in the diagnosis of listeriosis]. | the technique of h-antibodies determination in serodiagnosis of listeriosis used at present is capable of detection not only h-antibodies but also flagellar somatic antibodies in the sera. an attempt was made to increase the specificity of h-agglutinins. an experience in the preparation of pure h-antigen is described. however, it is impossible to detect positive h-agglutination either with the aid of a mixture of flagellae and latex or with pure h-antigen. after determination of h-antigen by the ... | 1976 | 821279 |
| effect of pretreatment with bacillus calmette-guerin on the course of a listeria monocytogenes infection in normal and congenitally athymic (nude) mice. | the effect of pretreatment with bcg on the course of a listeria monomcytogenes infection was studied in nu/nu mice and in their heterozygous littermates (+/nu). first, evidence was presented that the nu/nu mice used lacked functional t cells, since bcg treatment resulted only in skin reactivity to tuberculin in +/nu mice and not in nu/nu mice. acquired resistance to listeria (based on lower spleen counts) was only obtained in bcg pretreated +/nu mice. evidence was presented that bcg pretreatment ... | 1976 | 821508 |
| listeria cell wall fraction. characterization of in vitro adjuvant activity. | we have previously described a crude cell wall fraction of listeria monocytogenes (lcwf) which induces resistance to listeria infection in mice, is a murine b-cell mitogen and is an immunological adjuvant. data reported here show that lcwf, which is effective over a wide dose range, exerts its adjuvant action on early events in the induction of an immune response. moreover, lcwf stimulates nonadherent cells to respond to sheep red cells when adherent cells are severely depleted or absent, sugges ... | 1976 | 821854 |
| [isolation and classification of listeria monocytogenes from sewage water]. | | 1975 | 822259 |
| [further study of the antibody adsorption test for the purpose of increasing the specificity of listeriosis serodiagnosis]. | in testing the specificity of interaction in the agglutination reaction with listeria antigens of 191 sera of healthy persons with the aid of adsorption with staphylococcus, enterococcus and listeria a positive result was obtained in 56.5% of cases (108 sera); the higher the serum titres--the more of them reacted specifically (31.7% at the 1 : 40 titre; 83.3--100% at the 1 : 160--1 : 320 titres). | 1976 | 822660 |
| serum levels of progesterone, estradiol, and hydrocortisone in ewes after abortion due to listeria monocytogenes type 5. | estradiol, progesterone, and hydrocortisone were measured by radioimmunoassay in peripheral serum of pregnant ewes infected with listeria monocytogenes type 5 and in normal pregnant controls. progesterone had decreased in both groups at abortion or parturition. estradiol and hydrocortisone of control ewes had increased at parturition. in infected ewes, the serum hydrocortisone value was high for 3 days after inoculation, but it returned to preinoculation levels for the remainder of gestation. se ... | 1976 | 822762 |
| letter: prevalence of listeria monocytogenes in the newborn. | | 1976 | 822787 |
| role of lymphocytes in cellular resistance in infection. | | 1976 | 822980 |
| effect of tilorone on susceptibility of mice to primary or secondary infection with listeria monocytogenes. | subcutaneous administration of the drug tilorone did not increase the susceptibility of cd-1 male mice to intravenous or intraperitoneal infection with an alpha-toxin-deficient mutant of the smith diffuse strain strain of staphylococcus aureus. in contrast, a single injection of this drug greatly increased the susceptibility of mice to an intravenous or an intraperitoneal infection with listeria monocytogenes, an intracellular parasite. the effects of tilorone, which were maximal when the drug w ... | 1976 | 823106 |
| the listeria monocytogenes infection. a case report and review of the literature with special reference to the cases in maine. | | 1976 | 823286 |
| [comparative studies on the effectiveness of 2 frequently-used elective culture media for enterococci]. | | 1976 | 823722 |
| acquired resistance of bcg-vaccinated red mice to infection with listeria monocytogenes. | infection experiments have shown that red mice, belonging to the vole family, could be infected with listeria monocytogenes and that they were almost as susceptible to intravenous infection as cf1 mice. vaccination of red mice with bcg induced a resistance which could be demonstrated by prologation of the survival time of the animals after challenge with listeria. the resistance was greatest in the second and third week after vaccination and was considerably higher after intravenous injection of ... | 1976 | 823794 |
| activation of guinea pig macrophages by cell walls of mycobacterium bovis, strain bcg. | | 1976 | 824056 |
| [listeriosis]. | | 1976 | 824387 |
| the autoinhibition activity of some microbial species. | studies revealed that during the process of their reproduction some microorganisms produce substances inhibiting the development of the own populations. a method was developed to establish the phenomenon, distinguished by its simple application and dependable results. the phenomenon was noted with the species staphylococcus, l. monocytogenes, salmonealla, and e. coli, and was lacking in p. multocida, brucella, ery. rhusiopathiae, bac. anthracis, and bac. subtilis. it was found that the agent cap ... | 1976 | 824897 |
| certain chemical and biological properties of phenol extracts from listeria monocytogenes. | a toxic component obtained by phenol extraction of listeria monocytogenes 9-125 was found to have a molecular weight of about 2 x 10(6). this material was composed of carbohydrate, protein, lipid, phosphorus, and a component resembling 2-keto-3-deoxyoctanate. infrared spectrums indicated that similarities existed between this material and salmonella abortus-equi lipopolysaccharide. mild acid hydrolysis produced water-soluble and water-insoluble fractions. sheep erythrocytes sensitized with aqueo ... | 1976 | 824986 |
| [immunological responsiveness in c57bl/6 mice during the growth of a tumoural graft: the lewis' lung carcinoma (author's transl)]. | using antibody and delayed type hypersensitivity responses to sheep red blood cells, immunological responsiveness was studied during the course of 3ll tumor growth. acquired specific resistance to listeria monocytogenes of tumor bearing mice was also investigated. experimental results obtained, showed that the ability of 3ll bearing mice to establish a specific immune response is not markedly impaired. | 1976 | 825018 |
| resistance to tumor growth mediated by listeria monocytogenes: collaborative and suppressive macrophage-lymphocyte interactions in vitro. | spleen (sc) and peritoneal cells (pc) from c57bl/6 mice immune to listeria monocytogenes (lm) have a marked cytotoxic effect on the in vitro growth of b-16 melanoma. cytotoxicity to b-16 is mediated by the interacting semsitized thymus-derived (t) lymphocytes and macrophages (mchi) or adherent cells. separation of immune sc or pc into their adherent and nonadherent components, depletion of the adnerent cells or elimination of the theata-bearing cells from an enriched t cell population all result ... | 1976 | 825574 |
| listeria monocytogenes: faecal carriers and perinatal mortality. | | 1975 | 825700 |
| listeria monocytogenes in "oven-ready" poultry. | listeria monocytogenes was isolated from 10 out of 68 "oven-ready" poultry (ie, 14-7 per cent) purchased at 26 different shops and supermarkets. the organisms belonged to type 4 and 1/2; from one chicken both serotypes were isolated. | 1976 | 826007 |
| acquired resistance against listeria monocytogenes in red mice and cf1 mice immunized with strains of bcg or mycobacterium tuberculosis. | groups of red mice and cf1 mice immunized intravenously with varying doses of a weak or a strong strain of bcg or a strain of mycobacterium tuberculosis were challenged 3 weeks after immunization with 0.1 or 0.2 ml 10(-2) listeria monocytogenes injected intravenously, simultaneously with a non-immunized control group. the acquired resistance was determined on the basis of the number of survivors and the survival times of the animals that died spontaneously. in the red mice, the strong bcg strain ... | 1976 | 826109 |
| critical review of previously reported animal studies of tumor immunotherapy with nonspecific immunostimulants. | | 1976 | 826208 |
| [effect of the lipid fraction of listeria monocytogenes cells on the immune response of irradiated mice. i. effect of lipids administered prior to irradiation]. | | 1976 | 826740 |
| [effect of the lipid fraction of listeria monocytogenes cells on the immune response of irradiated mice. ii. effect of lipids administered following irradiation]. | | 1976 | 826741 |
| monocyte preparation from blood. | | 1976 | 826759 |
| [biological properties of erysipelothrix phages isolated from lysogenic cultures]. | | 1976 | 827193 |
| acquired cellular resistance following transfer of lymphocytes from mice infected repeatedly with staphylococcus aureus. | | 1976 | 827335 |
| contributions to further sero-variants of listeria monocytogenes. | the authors report on the isolation of 13 listeria monocytogenes strains of healthy human subjects which, within serogroup 4, contain at least four variants of known listeria antigens, but wound not fit into the grouping system that has been in use. | 1976 | 827878 |
| listeria-encefalitis in cows through litter from a broiler-farm. | in a loose-housed herd four cows are emergency-slaughtered, within some weeks, because of symptoms of encefalitis. from the brains of these cows, as well as from the litter, coming from broilers, that had been put in the cow-stables before, listeria monocytogenes type 4b has been isolated. at the same time an investigation was made from faeces/intestinal contents of broilers. out of the contents of 2.373 intestines, 1% of about 2.300.000 broilers ready for use, coming from 146 farms, 4.1% l.mono ... | 1976 | 828366 |
| ultrastructural changes induced by freezing and thawing in listeria monocytogenes (transmission and scanning electron microscopy). | | 1976 | 828490 |
| [listeria meningitis in children]. | | 1976 | 828896 |
| effect of pulmonary irradiation from inhaled 90y on immunity to listeria monocytogenes in mice. | | 1976 | 829554 |
| macrophage inhibiting activity in serum and central lymph of listeria-immune mice. | serum and central lymph from mice immunized with live listeria monocytogenes six days previously and boostered four hours before collection exerted significant inhibition of macrophage migration in vitro. it is concluded that lymphokines or lymphokine-like products of the cellular immune reaction are released in vivo and are possibly instrumental in the generation of acquired cellular antibacterial immunity. | 1975 | 829904 |
| listeria monocytogenes infection in an immunosuppressed patient. | | 1977 | 847965 |
| [influence of latent vitamin a deficiency of the mouse on the production of humoral antibodies against sheep erythrocytes and on the resistance against infection with listeria monocytogenes (author's transl)]. | mice fed with a vitamin a free diet for several months did not develop signs of vitamin a deficiency. however, chemical analysis revealed a reduced content of vitamin a in the liver of such mice. the ability of these animals were latent vitamin a deficiency to produce antibodies against parenterally applicated sheep erythrocytes was not hampered. similar numbers of antibody producing cells could be detected in the spleen of these mice compared with control animals. resistance against intravenous ... | 1977 | 848214 |
| infection in newborn siblings. | two newborn siblings, one with meningitis and one with sepsis due to listeria monocytogenes, were born to a healthy, 33-year-old woman. she had had a spontaneous abortion prior to the birth of these infants. in spite of negative cultures, persistence of this bacterium in the mother's genital tract and perinatal acquisition of infection is suspected. | 1977 | 848461 |
| a numerical taxonomic survey of listeria and related bacteria. | a numerical taxonomic study was performed on named strains of listeria, erysipelothrix, microbacterium thermosphactum, lactobacillus, streptococus, propionibacterium, kurthia and some possibly related bacteria using i43 unit characters covering a wide range of properties. the strains fell into six main clusters: (a) listeria; (b) microbacterium thermosphactum, lactobacillus, streptococcus; (c) gemella, erysipelothrix; (d) kurthia and mainly aerobic corynebacteria; (e) propionibacterium, staphylo ... | 1977 | 856940 |
| cell-mediated immunity after oral immunization with ribonucleic acid-protein fractions of vibrio cholerae l-form lysates. | oral administration of a single dose of ribonucleic acid-protein fraction of lysates of vibrio cholerae subtype ogawa l-forms induced an increase in cell-mediated immunity in rabbits. this was demonstrated by an increase in leukocyte migration inhibition in peripheral blood leukocytes, in macrophages migration inhibition, and in microbicidal activity against listeria monocytogenes in peritoneal macrophages obtained from orally immunized rabbits. increased cell-mediated immunity was induced mainl ... | 1977 | 863514 |
| central nervous system infections in patients with cancer. changing patterns. | central nervous system infections in patients with cancer at memorial sloan-kettering cancer center from 1971 to 1974 were surveyed and compared with a previous survey from 1955 to 1970. the two periods were similar in that: 1) there was a high incidence of cns infection in patients with lymphoma, leukemia, and head and spine tumors, 2) specific organisms tended to infect patients with certain primary neoplasms, and 3) fungal infections were common and difficult to diagnose. the two periods diff ... | 1977 | 880555 |
| influence of cyclophosphamide on delayed hypersensitivity and acquired cellular resistance to listeria monocytogenes in the mouse. | the effect of a single dose of cyclophosphamide (cy) on delayed type hypersensitivity (dh) and acquired cellular resistance (acr) to listeria monocytogenes infection in mice was studied. intraperitoneal or intracutaneous immunization with l forms of l. monocytogenes did not result in protection against lethal challenge. a positive dh could be observed when cy-treated mice were intracutaneously immunized with 10(8) or more l forms. intraperitoneal injection of viable l. monocytogenes resulted onl ... | 1977 | 885586 |
| [neonatal listeriosis. apropos of 53 cases]. | 53 cases of neonatal listeriosis were seen during the last five years at the intensive care unit for newborn infants (pr minkowski) and the neonatal center (p. varangot) of the port-royal maternity hospital. the significant decline in mortality to 22 p. 100, when compared with previous years, was attributed to improvements in the diagnosis during the first hours of life and the contribution of artificial ventilation. the most frequent initial clinical sign was respiratory distress (58 p. 100) wh ... | 1977 | 903579 |
| effect of listeria monocytogenes septicemia during pregnancy on the offspring. | | 1977 | 910831 |
| enhanced toxicity for mice of combinations of bacterial lipopolysaccharide and vincristine. | sublethal doses of vincristine (vnc) and bacterial lipopolysaccharide (lps) administered simultaneously to adult male mice resulted in markedly enhanced mortality. all of 10 strains of pseudomonas aeruginosa tested, 4 of 7 strains of bacteroides, and 6 of 10 strains of listeria monocytogenes were able to substitute for purified lps in enhancing mortality in vnc-treated mice. inoculation of mice with each of 10 strains of pseudomonas, each of 7 strains of bacteroides, and about half of the 10 str ... | 1976 | 949180 |
| macrophage function and host resistance against infection with toxoplasma gondii. | the role of macrophages on the course of an infection with toxoplasma gondii has been examined. stimulation of macrophage function by killed bordetella pertussis cells did not show any beneficial effect as an increased susceptibility became apparent. the functional blockade of macrophages by dextran sulfate or carbon particles did not result in a higher susceptibility of mice to the lethal primary infection with t. gondii. thus in vivo macrophages apparently do not play an essential role as effe ... | 1976 | 974901 |
| morphology and time course of experimental listeriosis in nude mice. | experimental listeriosis in phenotypically normal (nu/+) euthymic nmri mice has a characteristic morphology and short-term course. in contrast, listeric infection in congenitally dysthymic nude (nu/nu) mice does not proceed in clear-cut phases, develops more slowly, displays a chronic tendency from the beginning, and shows a considerably different morphology. the inability of nude mice to effectively control and terminate infection by listeria monocytogenes obviously results from the lack of t ... | 1976 | 1085754 |
| [the significance of the t-cell-mediated reaction in the defence against infection with listeria monocytogenes (proceedings)]. | | 1976 | 1086559 |
| [immunologically induced improvement of killing performance of peritoneal macrophages against listeria monocytogenes in the mouse (proceedings)]. | | 1976 | 1086560 |
| purification and characterization of two bacteriocins from streptococcus faecium. | two bacteriocins were found in the supernatant fluid and in an extract of streptococcus faecium strain ei. the small soluble enterocin eia represented more than 90% of the total activity in the supernatant fluid, and was purified 400-fold by ammonium sulphate fractionation, gel filtration on sephadex g-75 and chromatography on deae-cellulose. enterocin eib, with a particle weight greater than 4 x 10(6), was the predominant type in the extract. it was released in appreciable quantities after brea ... | 1975 | 1097585 |
| subversion of host defense mechanisms by murine tumors. i. a circulating factor that suppresses macrophage-mediated resistance to infection. | the subcutaneous injection of cells of any one of five unselected murine tumors resulted very rapidly in the liberation into the circulation of a small molecular weight factor that severely impaired the capacity of the host to resist experimental infection with listeria monocytogenes and yersinia enterocolitica. it was found that the factor appeared in blood within 8 h of injecting tumor cells subcutaneously. that it possessed potent physiological activity was evidenced by the demonstration that ... | 1976 | 1249520 |
| [possible relationship between bacterial surface structures, immune-adherence, chemotaxis and phagocytosis (author's transl)]. | in the present study we attempted to determine the relationship between bacterial surface structures, immune adherence, chemotaxis and phagocytosis. as shown in table 1 encapsulated bacteria (klebsiella ozanae, k. pneumoniae, pasteurella multocida, streptococcus pneumoniae), mycoplasma pneumoniae and m. fermentans had a much lower immune adherence-activity than non-encapsulated bacteria (bacillus cereus, brucella abortus, erysipelothrix insidiosa, escherichia coli, listeria monocytogenes, pseudo ... | 1976 | 1258564 |
| direct application to dairy foods of a listeria-specific oligonucleotide probe to 16s rrna. | a potentially listeria-specific 28 base oligonucleotide probe was designed from 16s rrna sequence data. using either 32p or non-radioactive (alkaline phosphatase) labels, the probe was shown to be highly specific as it hybridised to rna extracted from all of the species of listeria but not to any of the other bacteria tested. both probe methods were highly sensitive and ca 10(2) cfu/ml listeria could be detected in pure cultures. a rapid procedure for extracting rna from milk, camembert and cott ... | 1992 | 1280986 |
| listeriosis surveillance: 1991. | a total of 130 cases of listeriosis was reported in england, wales and northern ireland in 1991. this represents a slight increase on the 1990 total of 118 reports but a marked decline compared with the peak incidence of reporting of 291 in 1988, which was part of an upsurge of cases between 1987 and mid 1989. two epidemiological features of note in 1991 were the reappearance of a late summer-autumn peak in cases (commonly seen prior to 1987) and an increase in the number of reports among younge ... | 1992 | 1284938 |
| listeriosis in france. | | 1992 | 1285236 |
| induction of protective cd8+ t lymphocytes by an attenuated listeria monocytogenes acta mutant. | we tested the ability of an attenuated acta mutant of listeria monocytogenes to induce protective immunity in mice. this mutant can enter and multiply in the cytosol of the infected host cell, but is deficient in actin-dependent cell-to-cell spread. it was found to be of attenuated virulence for inbred c3h mice: the ld50 after i.v. injection was 1000-fold higher than that of the wild-type strain. mutant bacteria multiplied up to the fourth day in the liver, but only for 1 day in the spleen. a si ... | 1992 | 1286064 |
| effect of crude bacterial lipids on the course of listeria infection in mice. | crude lipids from 37 strains belonging to 32 bacterial species were isolated. by injecting mice with lipids 5 d prior to challenge with a virulent strain of listeria monocytogenes, immunostimulatory activity in 19 preparations was found. in general, lipids of gram-negative bacteria appeared to be more effective. as to bacilli, an extraordinary activity was found in the lipids of bacillus firmus. lipids of various species of the genus listeria were found to be active in approximately one-half of ... | 1992 | 1296929 |
| microbiological aspects and technological need: technological needs for nitrates and nitrites. | nitrate and nitrite are used in meat and fish curing, and in the manufacture of certain cheeses. nitrate itself has little antimicrobial effect and in most applications could be replaced by lower concentrations of nitrite. further, improved hygiene diminishes the need for nitrite. the antimicrobial activity and technological needs for nitrate and nitrite are reviewed. it is concluded that the technological needs for nitrite in meat products stored at < 10 degrees c could be met by added nitrite ... | 1992 | 1298641 |
| data for the properties of listeria strains (a review). | it seems that taxonomy of listeriae is in a fluid stage. between beta-haemolytic property and virulence of these bacteria a strong relationship has been demonstrated. these characters are coded by hlya gene which seems to belong to a monocistronic unit. virulent listeria strains possess specific surface antigens and can enter as well as multiply in host cells. their exact human virulence is not known. listeriae can grow from around 0 to 42 degrees c and can survive either the effect of frost or ... | 1992 | 1307435 |
| screening for listeria monocytogenes and other related species from faecal specimens at the lagos university teaching hospital, lagos. | four hundred and twenty faecal specimens from patients with acute gastroenteritis and apparently healthy persons who reported at the lagos university teaching hospital (luth) between october, 1988 and may, 1989 were investigated for faecal carriage of listeria monocytogenes and other related species. of these specimens, none was positive for listeria species. however, the mannitol--fermenting listeria species now murraya grayi sub species grayi and murraya grayi sub spp. murrayi representing 0.9 ... | 1992 | 1308081 |
| [prospective study of listeria in humans and animals]. | during 1967 to 1985, three cases of listeriosis were reported in algeria; at that time listeria monocytogenes caused several thousand cases of meningitis and sepsis in the world. in order to determine the frequency and bacteriologic characteristics of strain isolated in algeria, a prospective investigation was carried from 1985 to 1989 in humans and animals samples. sensitivity tests to antibiotics (mic) point out that all isolates strains are resistant to cephalosporins (first and third generat ... | 1992 | 1309133 |
| nucleotide sequence of the lecithinase operon of listeria monocytogenes and possible role of lecithinase in cell-to-cell spread. | the lecithinase gene of the intracellular pathogen listeria monocytogenes, plcb, was identified in a 5,648-bp dna fragment which expressed lecithinase activity when cloned into escherichia coli. this fragment is located immediately downstream of the previously identified gene mpl (prta). it contains five open reading frames, named acta, plcb, and orfx, -y, and -z, which, together with mpl, form an operon, since a 5.7-kb-long transcript originates from a promoter located upstream of mpl (j. menga ... | 1992 | 1309513 |
| reduced virulence of a listeria monocytogenes phospholipase-deficient mutant obtained by transposon insertion into the zinc metalloprotease gene. | a phospholipase-deficient mutant, termed jl762, was obtained from a virulent strain of listeria monocytogenes by screening a bank of 5,000 tn1545 transposon-induced mutants on 2.5% egg yolk brain heart infusion agar. as previously shown (j. mengaud, c. geoffroy, and p. cossart, infect. immun. 59:1043-1049, 1991), the transposon insertion took place inside the gene mpl, which encodes a zinc metalloprotease. by western blot (immunoblot) analysis, we showed that loss of phospholipase activity was a ... | 1992 | 1311708 |
| molecular determinants of listeria monocytogenes pathogenesis. | | 1992 | 1312514 |
| in vivo administration of recombinant growth hormone or gamma interferon activities macrophages: enhanced resistance to experimental salmonella typhimurium infection is correlated with generation of reactive oxygen intermediates. | purified and recombinant forms of growth hormone (gh) as well as of recombinant rat gamma interferon (ifn-gamma) enhance the survival of rats deprived of endogenous pituitary gh secretion by hypophysectomy (hx rats) and infected with virulent salmonella typhimurium. macrophages obtained from rats with intact pituitaries (pituitary-intact rats) or hx rats that were treated in vivo with either gh or the closely related hormone prolactin released elevated (p less than 0.05) levels of superoxide ani ... | 1992 | 1316877 |