| several aspects of yersinia pseudotuberculosis infection in children. | | 1991 | 1935107 |
| renal complications of yersinia pseudotuberculosis infection in children. | | 1991 | 1935108 |
| yersinia pseudotuberculosis infection in the mountain area. | | 1991 | 1935109 |
| yersinia pseudotuberculosis infection in children due to untreated drinking water. | | 1991 | 1935113 |
| comparison of plasmid dna among different serogroups of yersinia pseudotuberculosis. | | 1991 | 1935117 |
| [axillary lymphadenitis due to yersinia pseudotuberculosis]. | | 1991 | 1830152 |
| image cytometry of progesterone receptor expression during the cell cycle in the mcf-7 cell line. | progesterone receptors (pr) appear to be distributed in a heterogeneous way in mammary tumor cells. the study presented here was designed to examine if heterogeneity of pr expression is cell-cycle dependent. immunofluorescence techniques were used to label pr on the mcf-7 human breast cancer cell line and image cytometry was used to analyze the pr expression during g0 (ki-67 antigen-negative cells), g1, s, and g2/m cell-cycle phases. a second pr, brdu, and dna analysis was performed to study pr ... | 1991 | 1940323 |
| [the characteristics of pseudotuberculosis with joint involvement in the presence of chronic opisthorchiasis]. | a study was made of the clinical picture, certain laboratory and immunological findings in pseudotuberculosis patients with involved joints in the presence of opisthorchiasis invasion. the patients suffering from pseudotuberculosis and chronic opisthorchiasis frequently demonstrated icteric sclera, erythema nodosum, skin itch, tenderness in the right hypochondrium, hepatomegaly, liquid stool, leukopenia, eosinophilia, hyperbilirubinemia, activation of aminotransferases. later they showed the dia ... | 1991 | 1810061 |
| purification and partial characterization of a soluble hemagglutinin from yersinia pseudotuberculosis. | a soluble hemagglutinin (ha) produced by yersinia pseudotuberculosis strain inoue, serotype 5b, was purified by ammonium sulfate precipitation, gel filtration on sepharose cl-6b and high performance liquid chromatography on a deae-5pw anion-exchange column. the purified ha was a 14.5 kda protein with an isoelectric point of 4.5. amino acid analysis indicated that the ha consisted of 133 residues, corresponding to the molecular weight of 14,100. the amino acid sequence of n-terminal 38 amino acid ... | 1991 | 1943846 |
| [postcoital uterine microbe colonization and endometritis in the mare]. | in the mare, natural breeding is associated with bacterial contamination of the reproductive tract. the purpose of this study was to examine postcoital bacterial contamination and the resulting inflammatory response of the uterus. uterine swabs for bacteriological and cytological examination were obtained from 80 mares. each mare was sampled once between 4 and 69 hours postbreeding. in mares which did not conceive, sampling was repeated at the following estrus. the findings were compared with th ... | 1991 | 1948985 |
| a review of 2,3,7,8-tetrachlorodibenzo-p-dioxin-induced changes in immunocompetence: 1991 update. | 2,3,7,8-tetrachlorodibenzo-p-dioxin, more popularly called dioxin or tcdd and referred to in this review as 2,3,7,8-tcdd, is considered the prototype of the polychlorinated dibenzo-p-dioxins (pcdd). the pcdd are true contaminants and are formed primarily as byproducts in the manufacture of materials requiring the use of chlorinated phenols and during the combustion of chlorinated chemical products. from an environmental perspective, the pcdd have been most closely associated with the use of a nu ... | 1991 | 1949050 |
| [the immunoenzyme analysis of ceruloplasmin]. | a highly specific and sensitive enzyme immunoassay (eia) system, suitable for the qualitative analysis of ceruloplasmin, has been developed. the possibility of its use for the examination of children with mononucleosis and pseudotuberculosis has been studied. an increase in the concentration of ceruloplasmin has been more pronounced in infectious mononucleosis (0.506 +/- 0.026 g/l) and pseudotuberculosis (0.421 +/- 0.157 g/l). the results of eia coincided with the data obtained by radial immunod ... | 1991 | 1950269 |
| [the detection of human pseudotuberculosis cases in volyn province from 1975 to 1989]. | | 1991 | 1950294 |
| [cytological examination of urethral and endocervical smears in the diagnosis of infections]. | cytologic studies of smears from 130 women suffering from various diseases, including 61 pregnant patients with gestoses, have shown structural changes of the cells in the smears from the endocervix and urethra, that permitted the diagnosis of mycoplasma infection in 43.8% of patients, chlamydia infection, 52.3%, and herpes simplex in 72.3% of patients; in 63.9% of patients these infections were combined. cytologic studies may be useful in the tentative diagnosis of urogenital infections, includ ... | 1991 | 1951977 |
| [functional state of thrombocytes in yersinia infection]. | as many as 94 patients with yersiniosis were examined for the morphofunctional status of platelets (aggregation, disaggregation, endo-exocytosis and platelet forms). the data indicate that platelet from patients with yersiniosis possess a high ability for aggregation and a low ability for disaggregation. according to the experimental and clinical data, emoxipine can restore disturbed function of human platelets. | 1991 | 1801465 |
| [bacterial ileocecitis, a "new" disease]. | 786 patients with suspected acute appendicitis or appendiceal mass were examined by ultrasonography to distinguish appendicitis from bacterial enteritis. 533 of these patients were described before. in 91 (11.6%) ultrasonography revealed the characteristic picture associated with bacterial enteritis of the ileocaecal region-enlarged mesenteric lymph nodes and mural thickening of the terminal ileum and caecum--but no image of an inflamed appendix. in 64 of these a bacterial infection was confirme ... | 1991 | 1956444 |
| [the biological action of yersinia pseudotuberculosis endotoxin]. | experimental studies on guinea pigs have shown that y. pseudotuberculosis lipopolysaccharide is capable of inducing endotoxinemia accompanied by the development of the thrombohemorrhagic syndrome. in cases of pseudotuberculosis the importance of the increased synthesis of prostaglandins and cyclic nucleotides with the prevalence of pgf2 alpha and cgmp in the genesis of toxico-allergic manifestations of pathologic processes has been established. the pathomorphological picture of pseudotuberculosi ... | 1990 | 1963723 |
| [the protective properties of a porin from the outer membrane of yersinia pseudotuberculosis]. | the protective properties of the species-specific pore-forming polypeptide of y. pseudotuberculosis outer membrane (porin) were studied. the study showed that 80-90% of mice immunized with porin survived after challenge with 10-30 ld50 of y. pseudotuberculosis, serovars 1 and 3. the ld50 of the preparation exceeded its ed50 more than 100-fold. immunization made in two injections was more effective than immunization in one injection. the immunization of the animals with porin led to an increase i ... | 1990 | 1965874 |
| [secondary immunodeficiency in pseudotuberculosis in man and in experiment]. | surgical material from 55 children, from 2 to 15 years of age with an abdominal form of pseudotuberculosis (appendix, lymph nodes, ileum) and the immunogenesis organs (lymphoid tissue of the small intestine, lymph nodes, appendix, spleen and thymus) of 277 rabbits infected with virulent strains of the yersinia pseudotuberculosis i serovar at the dose of 10(8) bacterial bodies were investigated. the results testify to the disturbance of all parts of the immuno-phagocytic system in pseudotuberculo ... | 1991 | 1799314 |
| a cloned chromosomal dna fragment which differentiates yersinia pestis from yersinia pseudotuberculosis and yersinia enterocolitica. | chromosomal dna from reference yersinia strains was digested individually with 9 restriction endonucleases. dna fragments were separated and analyzed by electrophoresis through agarose gels. the clearest fragment patterns were obtained when ecori was employed. the y. pestis fragment pattern obtained after the use of this enzyme showed the presence of a unique dna fragment with molecular mass 1400 bp. this dna fragment was cloned, purified, labeled with 32p and then used to probe ecori digests of ... | 1990 | 1980253 |
| viability and ultrastructure of equine embryos following culture in a static or dynamic system. | the viability and ultrastructure of equine embryos were assessed following culture in a static or perifusion system. the percentage change in diameter was greater (p less than 0.025) for embryos in the static treatment (71%) than in the perifusion treatment (33%). fluorescein diacetate (fd) scores, the percentage of fluorescing cells (fc) and fluorescent intensity (fi), also were greater (p less than 0.05 and p less than 0.01) following static culture than for embryos cultured in the perifusion ... | 1991 | 1795284 |
| combined use of released proteins and lipopolysaccharide in enzyme-linked immunosorbent assay for serologic screening of yersinia infections. | an elisa for the screening of serum antibodies to yersinia species was developed using plasmid-encoded released proteins of yersinia enterocolitica o:8 and lipopolysaccharide of y. enterocolitica o:3 as a combined antigen. of 43 sera from patients infected with one of six different yersinia serotypes, 40 (93%) were positive in this assay. when tested using six serotype-specific elisas with the corresponding yersinia bacteria as antigens, 38 (88%) were positive. this screening elisa detects antib ... | 1991 | 1988526 |
| [yersinia pseudotuberculosis in new world monkeys]. | it is reported on four cases of pseudotuberculosis in 2 saimiri sciureus, 1 callithrix jacchus/penicillata hybrid and 1 s. oedipus. the animals came from two different groups, one being infected with y. pseudotuberculosis serotype i, the other with y. pseudotuberculosis serotype ii. all cases showed intestinal infection of thermophile campylobacter. remarkable were severe haemorrhagic components and the distinct rhs-proliferation, especially in the mesenteric lymphatic nodes. | 1991 | 2015031 |
| role of the yersinia outer membrane protein yada in adhesion to rabbit intestinal tissue and rabbit intestinal brush border membrane vesicles. | the yersinia virulence plasmid confers on strains of yersinia pseudotuberculosis and y. enterocolitica an adhesive potential superior to the one encoded by the chromosome alone. we have evaluated the role of the plasmid-encoded outer membrane protein yada (formerly called yopl) in adhesion. insertional inactivation of the yada gene (formerly called yopa), which encodes yada, led to a reduction in the capacity of plasmid-carrying strains of y. pseudotuberculosis 0:iii and y. enterocolitica 0:9 to ... | 1991 | 2018636 |
| control of pseudotuberculosis in zoos. | | 1991 | 2021043 |
| risk of yersinia infection among butchers. | the purpose of this study was to evaluate the risk of yersinia infection among butchers. serum samples were collected from 146 abattoir workers, stratified into 3 groups according to exposure to swine throats and intestines. 100 healthy blood donors were used as controls. antibodies against yersinia enterocolitica o:3 and o:9 and y. pseudotuberculosis i and iii were measured using elisa. symptoms associated with yersiniosis were recorded in a questionnaire. antibodies against y. enterocolitica o ... | 1991 | 2028228 |
| pseudotuberculosis at the zoological society of london (1981 to 1987) | | 1991 | 2028568 |
| [proline specific peptidases and their specific inhibitors]. | several proline specific peptidases were newly isolated from mammalian organs, plants and microorganisms, and their enzymatic properties characterized. the genes of prolyl endopeptidase, aminopeptidase p and proline iminopeptidase from some microorganisms were cloned and their nucleotide sequences determined. by high expression of these genes in escherichia coli, the enzymes became possible to be used for the industrial application as well as its basic research. novel inhibitors specific for the ... | 1991 | 1783984 |
| zoonoses and other findings in hedgehogs (erinaceus europaeus): a survey of mortality and review of the literature. | a survey of mortality in hedgehogs (erinaceus europaeus) was carried out between july 1976 and november 1986. most were from norfolk. of the 74 examined, 35 (47.3 per cent) were road casualties, one of which yielded salmonella typhimurium phage type (pt) 104. of the remaining 39, 13 (33.3 per cent) had salmonellosis due to s enteritidis pt 11. this organism, which appears to be common and widespread in hedgehogs in england was found in 10 separate incidents. the only other zoonosis was ringworm ... | 1991 | 2035215 |
| yersinia in effluents from the food-processing industry. | yersinia enterocolitica and yersinia pseudotuberculosis are current sources of pathogenic strains in humans and animals. yersiniae infections occur throughout the world, but are most prevalent in regions with moderate and subtropical climates. in australia, central europe and north america, cases of human infections with yersinia enterocolitica now rank in third place. the food-processing industry may influence the epidemiological situation in different ways. effluents which contaminate the envi ... | 1991 | 1782430 |
| efficacy and safety of recombinant human erythropoietin to prevent the anaemias of prematurity. european randomized multicenter trial. | | 1991 | 2040194 |
| meiotic drive of t haplotypes: chromosome segregation in mice with tertiary trisomy. | the properties of the t haplotypes, specific mutant states of the proximal region of chromosomes 17 in the house mouse, are of continuing interest. one such property is increased transmission of the t haplotype by heterozygous t/+ males to offspring. using the reciprocal translocation t(16;17)43h we have constructed males with tertiary trisomy of chromosome 17 (+t43/+ +/rb7+) carrying the robertsonian translocation rb(16.17)7bnr. only the progeny of these males which had inherited either t43/+ o ... | 1991 | 2040454 |
| isolation of yersinia enterocolitica serovar o8 from free-living small rodents in japan. | yersinia species were isolated from 65 of 223 free-living small mammals trapped in 10 regions on honshu island in japan. of the 65 strains isolated, 1 was yersinia enterocolitica serovar o3, 8 were y. enterocolitica o5, 6 were y. enterocolitica o8, 3 were y. enterocolitica o9, and 1 was yersinia pseudotuberculosis 4b. of the six y. enterocolitica o8 strains, five were positive for autoagglutination, ca2+ dependence, and the 45-mda virulence plasmid and showed high pathogenicity for mice. | 1992 | 1734061 |
| sir frederick hobday memorial lecture. all wind and water: some progress in the study of equine gut motility. | | 1991 | 2044514 |
| fumonisin mycotoxins and equine leukoencephalomalacia. | | 1991 | 2045319 |
| intestinal carriage of yersinia pseudotuberculosis by wild birds and mammals in japan. | fecal specimens were obtained from wild birds and mammals in the eastern part of shimane prefecture, japan, an area where serotype 1b, 2b, 3, and 4b strains of yersinia pseudotuberculosis were found to be prevalent in humans. each of 869 animals, including 259 wild birds and 610 wild mammals, was screened for yersiniae. a total of 37 strains of y. pseudotuberculosis were isolated from 34 (5.6%) mammals, including 23 raccoon dogs (nyctereutes procyonoides), eight deer (cervus nippon), two hares ( ... | 1991 | 2059038 |
| mapping and topographic localization of epitopes of the yersinia pseudotuberculosis invasin protein. | the yersinia pseudotuberculosis invasin protein is a 986-amino-acid outer membrane protein that promotes bacterial penetration into mammalian cells by binding to beta 1-chain integrin receptors. we previously showed that the integrin binding domain is encoded by the carboxyl-terminal 192 amino acids. to further investigate the structure of this protein, we characterized a set of 32 monoclonal antibodies (mabs) directed against invasin. invasin deletion derivatives and fusion proteins carrying di ... | 1991 | 1716609 |
| [the possible mechanisms of the adaptation of microbial populations to low positive temperatures]. | biologically low temperature was studied for its effect on the survival of populations and their biochemical and molecular-genetical state. the research was carried out on yersinia pseudotuberculosis and shigella sonnei models. it is established that the process of low-temperature adaptation of the populations may occur either at the level of the whole population with participation of inducible cold isoenzymes or at the level of a part of population, the temperature being a selection factor of t ... | 1991 | 2067418 |
| [recurrent thromboembolism disclosing protein c deficiency. apropos of a case with familial investigation]. | every thromboembolic manifestation, especially in young subjects, calls for an aetiological study in which haemostasis is evaluated primarily with assays of physiological coagulation inhibitors: protein c, protein s and antithrombin iii. protein c deficiency is found in 6 to 7% of thromboembolic manifestations. we report the case of a 21-year old man who had phlebitis followed by pulmonary embolism without facilitating factors. protein c level was 50% of normal value (0.50 iu/ml). the patient re ... | 1990 | 2075365 |
| [the entry portals and routes of yersinia pseudotuberculosis penetration into the warm-blooded organism]. | this work presents data indicating that y. pseudotuberculosis population, cultivated at lower temperature (6-8 degrees c), has a high potential of cellular and tissue invasiveness. pseudotuberculosis has been experimentally shown to start as generalized infection due to the rapid (during 10-15 minutes) penetration of the infective agent through the epithelium of the mouth cavity, the small intestine, the urinary bladder, conjunctiva, pulmonary alveoli and vascular walls into the blood and then i ... | 1990 | 2075758 |
| treatment of yersinia infection with tetracyclines. | | 1990 | 2076082 |
| a ribosomal protein of yersinia pseudotuberculosis having partial epitope identity with hla-b27. | the phenotype hla-b27 is common in patients who develop reactive arthritis after having an infection. one hypothesis concerning the pathogenesis of reactive arthritis is that molecular mimicry between hla-b27 and certain bacterial components might be involved. it is known that an infection with yersinia is commonly associated with reactive arthritis in b27 positive patients. therefore, we were interested to investigate whether cross-reactivity between yersinia and hla-b27 exists. a gene library ... | 1990 | 1715196 |
| [the use of growth stimulants in the bacteriologic diagnosis of yersinia]. | the effects of k. s. karpuzidi's stimulants (0.5-1 percent) and of para-amino benzoic acid (0.1-05 mm) on the growth and multiplication of 3 yersinia pseudotuberculosis, 1 y. enterocolitica strains, and e. coli nonpathogenic strain were examined. karpuzidi's stimulant was found to selectively stimulate yersinia cell growth and inhibit escherichia development in conditions unfavorable for these bacteria. para-amino benzoic acid intensively stimulated the growth of both yersinia and escherichia. w ... | 1991 | 1710732 |
| [infectious erythema of yersiniosis etiology]. | a study is presented of 14 patients (9 adults, 5 children) with infectious erythema interpreted as one of the clinical variants of generalized skin form of yersiniosis. along with typical signs of erythema, signs were found characteristic of yersiniosis, namely, mesadenitis, acute hepatitis, desquamative glossitis, changes in the ileocecal region, dyspeptic phenomena, tendency to a wave-like course. the clinical signs and symptoms of infectious erythema of yersiniosis etiology are illustrated by ... | 1990 | 2080559 |
| tyrosine phosphate hydrolysis of host proteins by an essential yersinia virulence determinant. | the plasmid-encoded yoph protein is a protein-tyrosine phosphatase (ptpase; ec 3.1.3.48) that is essential for yersinia virulence. we have investigated the molecular basis for the role of ptpase activity in yersinia pathogenesis. allelic recombination was employed to introduce a defined mutation into the yoph plasmid gene. conversion of the essential cys-403 to ala in the catalytic domain of the protein abolished yoph ptpase activity and significantly reduced the virulence of yersinia pseudotube ... | 1991 | 1705028 |
| [value of microbiologic studies for diagnosis of post-enteritis reactive arthritis]. | reactive arthritis may develop within a period of some days until upto 3 weeks after infections with yersinia enterocolitica, yersinia pseudotuberculosis, campylobacter jejuni/coli, shigella and salmonella. intestinal infections with klebsiella pneumoniae, clostridium perfringens, clostridium difficile, cryptosporidium, strongyloides stercoralis, taenia saginata and schistosoma mansoni are, in some cases, considered to be responsible for reactive arthritis. detection of pathogenic bacteria in fe ... | 1990 | 2085058 |
| in vivo strain in cranial sutures: the zygomatic arch. | although cranial sutures presumably play a role in absorbing and/or transmitting loads applied to the skull, loading patterns on facial sutures are poorly understood. the zygomatic arch provides a comparatively isolated mechanical part of the skull containing a single suture, the zygomatico-squamosal. in pigs the zygomatico-squamosal suture has a short vertical segment located within the postorbital process and a longer horizontal segment which extends posteriorly. in anesthetized pigs single-el ... | 1991 | 1856873 |
| the yersinia enterocolitica inv gene product is an outer membrane protein that shares epitopes with yersinia pseudotuberculosis invasin. | an essential virulence attribute for yersinia enterocolitica and yersinia pseudotuberculosis is the ability to invade the intestinal epithelium of mammals. the chromosomal invasin gene (inv) has been cloned from both of these yersinia species, and the y. pseudotuberculosis invasin has been well characterized (r. r. isberg, d. l. voorhis, and s. falkow, cell 50:769-778, 1987). here we constructed tnphoa translational fusions to the y. enterocolitica inv gene to identify, characterize, and localiz ... | 1990 | 1694524 |
| effect of polyelectrolytes on entry of escherichia coli hb101 (pri203) into hela cells. | the role of charged molecules in the entry mechanism of enteroinvasive bacteria was studied using escherichia coli hb101 harboring a plasmid (pri203) containing the yersinia pseudotuberculosis invasion region as an experimental model. we investigated the effect of several anionic and cationic polyelectrolytes on the initial steps of infection of hela s3 cells by e. coli hb101 (pri203). experiments in which the polyions were added to cell monolayers together with bacteria showed that invasion was ... | 1990 | 2087154 |
| yersinia pseudotuberculosis infection of buffaloes (bubalus bubalis). | | 1990 | 2090274 |
| antibodies against yersinia among farmers and slaughterhouse workers. | antibodies to immunoglobulins (ig) m, g, and a against yersinia enterocolitica serotypes o:3, o:5, o:8, and o:9 and yersinia pseudotuberculosis serotypes i and iii were analyzed by enzyme immunoassay of the serum samples of 161 slaughterhouse workers, 147 pig farmers, and 114 grain or berry farmers. the crude risk ratios for elevated serum antibody concentrations were calculated with the use of the grain and berry farmers as the reference population. the risk for an elevated y enterocolitica o:3 ... | 1992 | 1604274 |
| hybrid vaccines using escherichia coli as an antigen carrier. | | 1990 | 2101482 |
| wild animals as the source of infection with yersinia pseudotuberculosis in shimane prefecture, japan. | | 1991 | 1935073 |
| intracellular targeting of the yersinia yope cytotoxin in mammalian cells induces actin microfilament disruption. | pathogenic yersinia spp., including the etiological agent of plague, y. pestis, all carry a common plasmid that encodes a number of essential virulence determinants, the yop proteins. one of these, yope, has been shown to be involved in the obstruction of the primary host defense by a molecular mechanism leading to inhibition of phagocytosis (r. rosqvist, a. forsberg, m. rimpiläinen, t. bergman, and h. wolf-watz, mol. microbiol. 4:657-667, 1990). although the yop proteins are secreted into the c ... | 1991 | 1937815 |
| differential susceptibility to dl-alpha-difluoromethylornithine in clinical isolates of trypanosoma brucei rhodesiense. | dl-alpha-difluoromethylornithine is an enzyme-activated inhibitor of ornithine decarboxylase and an antagonist of polyamine metabolism that has been successful in clinical trials against west african sleeping sickness caused by trypanosoma brucei gambiense. its potential for use against the more virulent east african form of the disease, caused by t. brucei rhodesiense, is not certain. we examined 14 east african clinical isolates from the kenya trypanosomiasis research institute strain bank plu ... | 1990 | 2118325 |
| phorbol myristate acetate inhibits hela 229 invasion by bordetella pertussis and other invasive bacterial pathogens. | the microfilament inhibitors cytochalasins b and d have been traditionally used to indirectly evaluate the requirement for actin in the uptake of invasive bacterial pathogens by nonprofessional phagocytes. through their effects on microfilaments, both cytochalasins also impart profound alterations in cellular morphology and surface topology, which likely interfere with adherence. alterations affecting adherence would complicate interpretation of the effect of cytochalasins on entry alone. as an ... | 1990 | 2119340 |
| [yersiniosis in a general hospital in the basque country (1984-1989). clinical and epidemiological aspects]. | the features of the diseases caused by yersinia have not been properly evaluated in the basque country. the present study was performed to assess the incidence and consequences of this infection. | 1991 | 1943291 |
| ultrastructural changes in some pathogenic bacteria after treatment with ethylendiamintetraacetic acid. | the ultrastructure of pseudomonas pseudomallei, pseudomonas aeruginosa. yersinia pseudotuberculosis, salmonella typhimurium, listeria monocytogenes was studied after treatment with edta. the study established that the most sensitive species were: pseudomonas pseudomallei and pseudomonas aeruginosa. in the case of listeria monocytogenes changes were not observed. typical ultrastructural changes in the cell wall and the cytoplasmic membrane were established by means of ultrathin sections, as well ... | 1990 | 2129076 |
| [the sensitivity of yersinia to bacteriophage mu]. | various representatives of the genus yersinia were found to differ in their sensitivity to the lytic action of bacteriophage mu cts62, which could serve as an auxiliary test for the differentiation of y. pestis and y. pseudotuberculosis. among the strains under study, the causative agents of plague (34 strains) were sensitive to phage mu cts62, while the causative agents of enteric yersiniosis (42 strains) and pseudotuberculosis (73 strains), except 3 strains with the properties of y. pestis, we ... | 1990 | 2146845 |
| delay of puberty and impairment of growth in female rats given a non competitive antagonist of nmda receptors. | reportedly, excitatory amino acids are involved in the control of gonadotropin secretion of rats and non-human primates. the aim of this study was to investigate the effect of chronic blockade of nmda (n-methyl-d-aspartic acid) receptors by the non competitive receptor antagonist mk-801 on gonadotropin secretion and the onset of puberty in female rats. moreover, since in humans alterations of the timing of puberty frequently coexist with disturbances of body growth, suggesting a common etiology ... | 1990 | 2147050 |
| simultaneous primary infection with hiv and cmv leading to severe pancytopenia, hepatitis, nephritis, perimyocarditis, myositis, and alopecia totalis. | simultaneous primary infection with hiv and cmv in an 18-year-old woman led to an acute cytotoxic reaction, manifesting as pancytopenia, hepatitis, nephritis, perimyocarditis, and myositis. within 14 days parameters indicating acute cell damage reverted to normal. two weeks later transient alopecia totalis developed. initially, hiv-antigen but no hiv antibodies were present. within 3 weeks hiv-igg antibodies appeared while hiv antigen disappeared. anti-cmv-igm was clearly and anti-cmv-igg questi ... | 1990 | 2156107 |
| porin as a component of yersinia pseudotuberculosis endotoxin. | | 1990 | 2158213 |
| failure of beta-lactam antibiotics and marked efficacy of fluoroquinolones in treatment of murine yersinia pseudotuberculosis infection. | the treatment of yersiniosis by beta-lactams is questionable considering the proven failure of newer beta-lactams for treating murine yersinia enterocolitica infection. another modality of experimental treatment was performed with a virulent strain of y. pseudotuberculosis (nonproducer of beta-lactamase) highly susceptible (in terms of mics) to amoxicillin, cefotaxime, ceftriaxone, imipenem, doxycycline, gentamicin, and ofloxacin. the in vivo comparative efficacy of these drugs was evaluated in ... | 1991 | 1952849 |
| the lcre gene is part of an operon in the lcr region of yersinia enterocolitica o:3. | the low-calcium response (lcr) region of the virulence plasmid of yersinia pestis, yersinia pseudotuberculosis, and yersinia enterocolitica has been associated with calcium-dependent growth of bacteria. mutations in the previously identified lcre locus within the lcr region lack the repressor control of production of the lcr specific proteins, yersinia outer membrane proteins (yops) and v and w antigens. we sequenced a 3.3-kilobase-pair bamhi-clai fragment of the lcre locus of pyvo3, the virulen ... | 1990 | 2160939 |
| [reactive arthritis following yersinia pseudotuberculosis infection]. | a patient developed reactive arthritis due to yersinia pseudotuberculosis. five months after the primary infection, the patient still suffered from severe oligoarthritis. the administration of steroids and sulphasalazine had very little effect upon the development of the disease. | 1990 | 1968686 |
| establishment of a camptothecin analogue (cpt-11)-resistant cell line of human non-small cell lung cancer: characterization and mechanism of resistance. | camptothecin-11 (cpt-11) is a new derivative of camptothecin, a plant alkaloid antitumor agent, and a good candidate for clinical trials because of higher antitumor activity, less toxicity, and high aqueous solubility. cpt-11 is known to be altered into an active form, sn-38, by esterase in in vivo. cpt-11-resistant cells (pc-7/cpt) established from a human non-small cell lung cancer cell (pc-7) by stepwise, continuous treatment with cpt-11 exhibit about a 10-fold increase in resistance to the d ... | 1990 | 2168285 |
| susceptibility of wild mice to yersinia pseudotuberculosis and yersinia enterocolitica. | laboratory-born progeny and adult populations of old world woods mice (apodemus speciosus) trapped in a certain area where yersinia pseudotuberculosis was prevalent among wild animals, were challenged with y. pseudotuberculosis and yersinia enterocolitica to determine the ecology of yersinia in wild mice. the laboratory-born progeny population was associated with infection with y. pseudotuberculosis but not with y. enterocolitica serotype o:3 and was found to be nearly 200 times more susceptible ... | 1991 | 1755925 |
| [the heterogeneity of collection strains of yersinia pseudotuberculosis and their molecular biological properties]. | the capacity of y. pseudotuberculosis strains for disassociation with the appearance of s- and p-forms has been studied. strains 852 and 9547 show high stability in s-forms, their conversion into r-forms occurring at 40-42 degrees c. strain 6953 shows pronounced polymorphism and instability of its associations at different growth temperatures. strain 9532 exists in s- and r-forms which retain their stability during numerous subculturings at different growth temperatures and prolonged storage. th ... | 1991 | 1858469 |
| [the nonspecific changes in the immune system to the administration of the membrane-ribosomal fraction of the causative agent of pseudotuberculosis]. | nonspecific changes in different elements of the immune system of animals under the action of y. pseudotuberculosis membrane-ribosomal fraction (mrf) with high protective potency have been studied for the purpose of the analysis of the preparation for immunological safety. mrf has been shown to produce no changes in humoral immune response to antigens of different nature or to enhance this response, to produce no essential effect on the intensity of the reaction of delayed hypersensitivity to sh ... | 1991 | 1858471 |
| [structure of the o-specific polysaccharide chain of the yersinia pseudotuberculosis lipopolysaccharide (serovar ii c)]. | an o-specific polysaccharide has been isolated on mild acid hydrolysis of lipopolysaccharide from yersinia pseudotuberculosis serovar iic and shown to consist of abequose, d-mannose and 2-acetamido-2-deoxy-d-galactose residues in the ratio 0.8:3:1. from the results of acid hydrolysis, 13c nmr, methylation and periodate oxidation studies the structure of the repeating unit of the o-specific polysaccharide is deduced as follows: (formula; see text) | 1991 | 1863285 |
| acute mesenteric lymphadenitis due to yersinia pseudotuberculosis lacking a virulence plasmid. | a serotype 4a strain of yersinia pseudotuberculosis lacking the virulence plasmid pyv (pyv- strain) was isolated from the mesenteric lymph nodes but not from the stool or the appendix of a 10-year-old girl with a diagnosis of acute mesenteric lymphadenitis. microscopically, reticulocytic abscess and lymphadenitis were persent in the enlarged mesenteric lymph nodes. antibody against the isolate was detected in the serum. the isolate was negative for the presence of plasmid pyv and plasmid pyv-med ... | 1991 | 1864948 |
| [the rheumatic complications of pseudotuberculosis in a newly arrived population in siberia]. | | 1991 | 1887407 |
| [study by nmr and circular dichroism of synthetic "zinc finger" peptide of viral gag protein from hiv-2]. | we report the synthesis in solid phase of an 18-amino acid peptide that contains the cysteine-rich region of the structural gag protein of hiv-2. the characterization of this fragment and of its interaction with zn2+ has been made by one- (1 d) and two-dimensional (2d) nmr techniques and by circular dichroism. our results suggest that in aqueous solution the complexation produces a significant perturbation in the conformation of this peptide. | 1991 | 1913257 |
| fusarium oxysporum: status in bioethanol production. | fermentation of lignocellulosic materials to ethanol and other solvents provides an alternative way of treating wastes and producing chemical feedstocks and fuel additives. considerable efforts have been made in past 10 years to improve the process based on lignocellulosic biomass and hydrolysate that contains a complex mixture of sugars, decomposition products of sugars, and sometimes the inhibitory levels of soluble lignin. despite the relative abundance of d-xylose in crop and forest residues ... | 1991 | 1913845 |
| application of the polymerase chain reaction and immunofluorescence techniques to the detection of bacteria in yersinia-triggered reactive arthritis. | leukocytes in synovial fluid and peripheral blood samples from patients with yersinia-triggered reactive arthritis were analyzed after dna amplification using the polymerase chain reaction. the primers applied were specific for the virulence plasmid-coded 1cre genes of yersinia enterocolitica o:3 and yersinia pseudotuberculosis iii. no yersinia dna was observed within the synovial fluid cells or peripheral blood cells by polymerase chain reaction techniques. however, yersinia antigens were detec ... | 1991 | 1984781 |
| acute tubulointerstitial nephritis associated with yersinia pseudotuberculosis infection. | two siblings infected with yersinia pseudotuberculosis suffered from acute renal failure about 2 weeks after the onset of the disease. renal histology in both siblings showed acute tubulointerstitial nephritis. yersinia pseudotuberculosis type vb was isolated from feces of one of them, antibodies to yersinia pseudotuberculosis type vb in their sera were elevated. the results of the present study suggest that acute renal failure complicating infections with yersinia pseudotuberculosis is due to a ... | 1991 | 2032394 |
| [yersinia and campylobacter food poisoning]. | | 1991 | 2038688 |
| yersinia species isolated from sheep with enterocolitis. | in 40 submissions to the regional veterinary laboratory (rvl) wagga wagga from sheep in southern new south wales from 1981 to 1989, 53 isolates of yersinia sp were recovered from 45 sheep in 37 flocks. of 53 isolates, 26 were identified as y. pseudotuberculosis, 20 as y. enterocolitica, 5 as y. intermedia and 2 as y. frederiksenii. twelve isolates of y. pseudotuberculosis tested in the slide agglutination test all belonged to serotype iii. the 20 y. enterocolitica isolates were categorised bioch ... | 1991 | 2043083 |
| antibodies against dengue viral proteins in primary and secondary dengue hemorrhagic fever. | antibodies against dengue viral proteins were demonstrated in sera from dengue-infected patients by polyacrylamide gel electrophoresis, western blotting, and enzyme immunoassay. primary dengue cases showed low titers of igg class antibodies to envelope (e) proteins and two non-structural proteins, ns3 and ns5, in sera collected during the convalescent phase. secondary dengue- infected patients always demonstrated igg antibodies to e proteins in sera collected during the acute phase, and high tit ... | 1991 | 2063952 |
| [microbiology and epidemiology of yersinia infections]. | eleven species are actually recognized within the genus yersinia of which three--y. pestis, y. pseudotuberculosis, and certain serovars of y. enterocolitica--are important infectious organisms for humans and warm-blooded animals. the causative agents of yersiniosis, y. pseudotuberculosis and y. enterocolitica, occur world-wide in areas of moderate and subtropical climate. asymptomatically infected warm-blooded animals, causing environmental contamination, are the most important factors for the e ... | 1990 | 2076900 |
| [enteropathogenic yersinias: pathogenicity factors and new diagnostic methods]. | a limited number of serotypes of yersinia enterocolitica and y. pseudotuberculosis is enteropathogenic for humans. during the last decade molecular biology contributed significantly to the understanding of the pathogenicity of these enteric agents. all human pathogenic yersiniae harbour a 70-kilobase plasmid which is essential for virulence expression. presently, thirteen plasmid-encoded polypeptides have been identified. two of them have been identified as true outer membrane proteins and at le ... | 1990 | 2076901 |
| [cloning of yersinia pseudotuberculosis calcium-dependence plasmid pyv6953 bamhi fragments and their analysis in escherichia coli mini-cells]. | calcium dependence plasmid pyv6953 (70.4 kb) in yersinia pseudotuberculosis cells codes for the major quantities synthesis of 150; 48.5; 19.4 kd outer membrane proteins and the 51, 38, 27 kd proteins secreted into the culturing medium. these outer membrane and secreted proteins are synthesized in considerable amounts in yersinia pseudotuberculosis strains 6953 and 9547 at 37 degrees c and in the absence of calcium ions in the culturing medium. bamhi fragments of the plasmid pyv6953 as components ... | 1990 | 2084542 |
| enterocolitis in pigs associated with yersinia pseudotuberculosis infection. | | 1990 | 2085301 |
| [features of a protein component of the endotoxin from yersinia pseudotuberculosis]. | the protein moiety of endotoxin from yersinia pseudotuberculosis was found to consist of two polypeptides with apparent molecular masses 40 and 14.5 kda (4:1 w/w). the major protein (40 kda) was isolated from the endotoxin pretreated with sodium deoxy cholate by gel chromatography on the sephadex g-200 column. comparative study of this protein and oligomeric form of porin from the outer membrane of y. pseudotuberculosis using sds--page, velocity sedimentation, lipid bilayer experiments, chemical ... | 1990 | 2085323 |
| enteritis in sheep, goats and pigs due to yersinia pseudotuberculosis infection. | the features of naturally occurring yersinia pseudotuberculosis serotype iii infections in 16 sheep, one goat and 3 pigs, and y. pseudotuberculosis serotype i infections in 3 goats, are described. affected animals usually had diarrhoea and were in poor condition or emaciated. a number were moribund or dead when submitted for necropsy. thickening of the caecal and colonic mucosa was the only gross lesion attributable to y. pseudotuberculosis infection, with liver or other visceral abscesses not b ... | 1990 | 2098020 |
| [an analysis of the mechanisms of interpopulation interaction of yersinia with tetrahymena pyriformis infusorians at the cellular and subcellular levels]. | the mechanisms of interaction between the populations of yersinia and t. pyriformis have been analyzed on the cellular and subcellular levels. as shown in this investigation, yersinia, when phagocytized by t. pyriformis, may undergo morphological changes, remain unchanged and also multiply, destroying the host cell in the process. | 1990 | 2109915 |
| medium-chain-triglyceride lipid emulsion: metabolism and tissue distribution. | the utilization and distribution of radioactively labeled lipid emulsions were evaluated in sprague-dawley rats. animals received one of three lipid emulsions. group 1 received [14c]medium-chain-triglyceride (mct) lipid emulsion, group 2 received a 75%:25% (vol:vol) admixture of [14c]mct: unlabeled long-chain-triglyceride (lct) lipid emulsion, and group 3 received only [14c]lct. the radioactive dose appearing in expired carbon dioxide and various body tissues was monitored over a 24-h period. re ... | 1990 | 2118303 |
| analysis of factors which determine the existence of yersinia pseudotuberculosis in a saprophytic phase. | data are presented on the effects of a variety of abiotic and biotic environmental factors on the existence and changes in the numbers of y. pseudotuberculosis. experiments with sterile soil showed that y. pseudotuberculosis populations were resistant over a wide range of major abiotic factors: temperature (0-30 degrees c), humidity (15-50%), ph (5.9-9.0). although exerting some effect on the duration of different growth phases, the above abiotic factors did not influence, within the tested rang ... | 1990 | 2125615 |
| mechanistic studies of the biosynthesis of 3,6-dideoxyhexoses in yersinia pseudotuberculosis. purification and characterization of cdp-6-deoxy-delta 3,4-glucoseen reductase based on its nadh:dichlorophenolindolphenol oxidoreductase activity. | cdp-6-deoxy-delta 3,4-glucoseen reductase, the key enzyme catalyzing the biosynthetic formation of cdp-ascarylose (cdp-3,6-dideoxy-l-arabino-hexose), was purified from yersinia pseudotuberculosis by monitoring its nadh:dichlorophenolindolphenol oxidoreductase activity. a protocol consisting of deae-cellulose, phenyl-sepharose, and sephadex g-100 column chromatography yielded a mixture of two proteins. the low molecular weight protein contaminant was removed by limited tryptic digestion leaving a ... | 1990 | 2159466 |
| [structural-functional characteristics of yersinia pseudotuberculosis plasmid pvm82]. | the restriction map of yersinia pseudotuberculosis plasmid pvm82 was established using the "chromosome walking" method. according to transpositional mutagenesis, the plasmid pvm82 appeared to be conjugative and was able to be transmitted from y. pseudotuberculosis to the e. coli k-12 cells. | 1990 | 2165015 |
| structures of euglobal-g1, -g2, and -g3 from eucalyptus grandis, three new inhibitors of epstein-barr virus activation. | three new euglobals with acylphloroglucinol-monoterpene structures, named euglobal -g1 (1), -g2 (2), and -g3 (3) were isolated from the chloroform extract of the juvenile leaves of eucalyptus grandis (myrtaceae). the structures of these new compounds were determined on the basis of their spectral data. the compounds strongly inhibited the epstein-barr virus activation. | 1990 | 2168298 |
| sequence analysis of conserved rega and variable orf43.1 genes in t4-like bacteriophages. | bacteriophage t4 rega protein is a translational repressor of several phage mrnas. in the t4-related phages examined, rega nucleotide sequences are highly conserved and the inferred amino acid sequences are identical. the exceptional phage, rb69, did not produce a rega protein reproducibly identifiable by western blots (immunoblots) nor did it produce mrna that hybridized to t4 rega primers. nucleotide sequences of either 223 or 250 base pairs were identified immediately 3' to rega in rb18 and r ... | 1990 | 2168375 |
| calcitonin receptors on circulating normal human lymphocytes. | circulating human lymphocytes possess specific and functional receptors for calcitriol and pth. we sought to determine if they also possessed receptors for calcitonin (ct), the third classical calciotropic hormone. we isolated blood mononuclear cells from healthy volunteers to separate monocytes, total lymphocytes, and t-lymphocytes; the purity of the three cell populations was more than 90%, 95%, and 85%, respectively. salmon ct (sct) was labeled by the chloramine-t method (sa, 254 muci/microgr ... | 1990 | 2168433 |
| determination of bhv1 specific immune reactivity in naturally infected and vaccinated animals by lymphocyte proliferation assays. | the in vitro bhv1-specific lymphocyte stimulation assay was used to investigate immune reactivity of cattle after natural infection or vaccination with bhv1. proliferative responses to live virus were shown in tests with peripheral blood lymphocytes of seropositive field virus-infected animals and of vaccinated animals. nineteen out of 36 seropositive field virus-infected animals did not show in vitro responses. nine out of 12 animals showed, at least transient, responsiveness after vaccination. ... | 1990 | 2168602 |
| effect of particle size and temperature on the conformation and physiological behavior of apolipoprotein e bound to model lipoprotein particles. | the effect of particle size and structural order/disorder of the lipid domain on the conformation and physiological behavior of lipid-associated apolipoprotein e (apoe) was evaluated. circular dichroic (cd) spectra of apoe bound to large (lme) and small (sme) microemulsion particles, composed of dimyristoylphosphatidylcholine (dmpc) and cholesteryl oleate (co), and to dmpc disks revealed that at 4 degrees c, where all of the lipid constituents were in an ordered state, apoe bound to lme displaye ... | 1990 | 2168737 |
| alteration of the aminophospholipid translocase activity during in vivo and artificial aging of human erythrocytes. | human erythrocytes were separated into three density groups representing different age groups. phospholipid outside-inside translocation rates and equilibrium distribution were determined in each group with spin-labeled phosphatidylserine (ps*), phosphatidylethanolamine (pe*), and phosphatidylcholine (pc*), at 37 degrees c and 4 degrees c. at both temperatures, the initial velocity of aminolipid translocation was reduced in the more dense (older) cells. the equilibrium distribution was not signi ... | 1990 | 2168752 |
| a genetic locus of enteropathogenic escherichia coli necessary for the production of attaching and effacing lesions on tissue culture cells. | the ability of enteropathogenic escherichia coli (epec) to form attaching and effacing intestinal lesions is a major characteristic of epec pathogenesis. using tnphoa mutagenesis we have identified a chromosomal gene (eae, for e. coli attaching and effacing) that is necessary for this activity. a dna probe derived from this gene hybridizes to 100% of e. coli of epec serogroups that demonstrate attaching and effacing activity on tissue culture cells as well as other pathogenic e. coli that produc ... | 1990 | 2172966 |
| biphasic effects of polarizing current on adenosine-sensitive generation of cyclic amp in rat cerebral cortex. | cyclic amp accumulation elicited by adenosine was investigated in cortical slices of rats following the application of a weak anodal direct current (anodal polarization) to the unilateral sensorimotor cortex. anodal polarization with 3.0 microa for 30 min caused an increase in the adenosine-elicited accumulation of cyclic amp in the polarized cortex, in which case the increase in the polarized cortical region was highlighted by repeated applications of the currents. polarization with 0.3 microa ... | 1990 | 2173816 |
| [a cyclic 3',5'-adenosine monophosphate-binding protein in the causative agent of plague]. | camp-binding protein was isolated from the plaque agent and purified to the homogeneous state. purification process included filtration of the initial preparation through the membrane able to transmit particles with mol. weight to 300,000 da, chromatography on cellulose "de-52" and biogel htp. the protein homogeneity was confirmed by electrophoresis in polyacrylamide gel and precipitation with commercial plague agglutinating serum. the protein with mol. weight of 180,000 da consisted of two iden ... | 1990 | 2177132 |
| yersinia pseudotuberculosis infection as a cause of reactive arthritis as seen in a genitourinary clinic: case report. | | 1990 | 2179118 |