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diseases of guinea-pigs.information on diseases of guinea-pigs is generally available in research institutes and breeding establishments. when dealing with an individual patient it is tempting to extrapolate from this pool of information, without realising that a number of factors can affect the disease situation in a colony which need not apply to the individual animal kept as a pet--or vice versa. thus diseases may appear as an explosive outbreak in a group of cavies kept under uniform conditions while a single anima ...1976820055
studies on yersinia pseudotuberculosis. iv. isolation of y. pseudotuberculosis from healthy swine. 19761034842
[the temperature-induced early and late development of resistance to the bactericidal action of blood serum in yersinia pseudotuberculosis].y. pseudotuberculosis strains were grown at 6 degrees-8 degrees c and then incubated at 37 degrees c. 3-6 hours later serum resistance appeared in the strains having plasmid virulence and producing outer membrane polypeptide with a molecular weight of 120 kd, known as p1. 10-12 hours later serum resistance appeared in the strain having the virulence plasmid, but not producing p1, as well as in strains in which the plasmid was eliminated.19921414100
[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 ...19911858471
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 ...19902098020
special features of distribution of yersinia pseudotuberculosis in japan.the incidence of yersinia pseudotuberculosis isolation from humans, animals, water, and pork in japan is presented on the basis of a review of the literature and serotyping of 633 strains referred to our laboratory. most of the strains belonged to serogroup 4b, followed in frequency of isolation by serogroups 3, 1b, 5b, 5a, and the others, whereas serogroup 1a has not been detected. although strains were isolated from 11 species of animals, none were isolated from birds.19892656752
[campylobacter jejuni infections in slaughterhouse workers].complement fixing (c.f.) antibodies to campylobacter jejuni were detected in 83 slaughterhouse workers and 83 blood donors. workers were aged 18-65 years (mean, 41.7 +/- 12.3) and had worked in the slaughterhouse for 2-40 years (mean, 17.5 +/- 5.1). c.f. antibodies were detected according to mosimann's method and by including five antigens: campylobacter jejuni, yersinia enterocolitica types 03 and 09, yersinia pseudotuberculosis and brucella. positive titers were found in 12.1% of workers and i ...19883154982
studies on yersinia (pasteurella) pseudotuberculosis. i. sources and serological classification of the organism isolated in japan. 19704990817
[the identification of humoral antibodies after immunization against yersinia pseudotuberculosis (synonym pasteurella pseudotuberculosis)]. 19675601716
[further studies on thermolabile antigens of yersinia pseudotuberculosis (syn. pasteurella pseudotuberculosis)]. 19665995376
characterization and pathogenicity of yersinia pseudotuberculosis isolated from swine and other animals.yersinia pseudotuberculosis serogroup iii is most frequently detected in healthy pigs. y. pseudotuberculosis strains were divided into two biogroups on the basis of their fermentation of melibiose. melibiose-fermenting strains were distributed in all the hosts and serogroups examined. melibiose-nonfermenting strains were limited to serogroup iii isolated from healthy pigs. autoagglutination and calcium dependency were not related to fermentation of melibiose. melibiose-fermenting strains seem to ...19846470095
[electron microscopic study of the interaction of yersinia pseudotuberculosis with macrophages and hela cells].the comparative electron-microscopic study of early stages of the interaction of y. pseudotuberculosis virulent strain (no. 282) with "professional" (macrophages) and "nonprofessional" (hela cells) phagocytes has been carried out. the character of the intimate mechanism of this interaction has been found to be essentially different. the common feature for both systems is the adsorption of bacteria and their penetration into cells due to phagocytosis. but the subsequent fate of y. pseudotuberculo ...19846485665
[seasonal isolation of yersinia enterocolitica and yersinia pseudotuberculosis from tonsils of healthy slaughter pigs (author's transl)].45 strains of yersinia (y.) enterocolitica from which 36 respectively 9 belonged to o-group i or v and 28 strains of y. pseudotuberculosis from which 15 respectively 13 isolates belonged to serotype i or ii were isolated from 70 tonsils of 480 examined, clinically healthy slaughter pigs. in the tonsils of three animals were found both species together. y. enterocolitica was isolated during the whole year, but especially in the months of november (17.5%) and december (32.5%). y. pseudotuberculosi ...19817198363
[demonstration of yersinia enterocolitica and yersinia pseudotuberculosis in fecal samples of healthy slaughter swine depending on the season]. 19817324640
selective isolation from hela cell lines of yersinia pseudotuberculosis, pathogenic y. enterocolitica and enteroinvasive escherichia coli.using hela cell lines, we obtained an optimal and selective isolation of yersinia pseudotuberculosis, pathogenic y. enterocolitica and enteroinvasive escherichia coli from samples such as pork, feces and river water heavily contaminated with other bacteria.19948167427
detection of pathogenic yersinia enterocolitica and yersinia pseudotuberculosis from pork using the polymerase chain reaction. 19958833821
unique salmonella choleraesuis surface protein affecting invasiveness. possible inv related sequence.tnphoa mutagenesis of a salmonella choleraesuis isolate recovered from septicemic infection of feeder pigs resulted in 56 phoa+ knr strr mutants. thirty-five mutants exhibited reduced levels of invasion in the hep-2 cell model and were examined by sds-page western blot analysis using an anti-alkaline phosphatase antibody to visualize the insertion gene products. a mutant which produced a gene fusion product of 95 kda and exhibited > 90% reduction in invasion was subcloned. a 10 kb bamhi fragment ...19979192039
investigations into field cases of porcine colitis with particular reference to infection with serpulina pilosicoli.investigations into the possible causes of colitis and typhlocolitis were carried out on 85 pig units in the united kingdom between 1992 and 1996. serpulina pilosicoli was identified most commonly, occurring as the suggested primary agent on 21 (25 per cent) of the units but forming part of mixed infections on another 23 (27 per cent) of the units, the main co-infections being yersinia pseudotuberculosis (eight units), proliferative enteropathy (six units), salmonella species (four units) or ser ...19989549864
isolation of pathogenic yersiniae from wild animals in bulgaria.pathogenic yersinia strains were isolated between december 1998 and april 1999 from 37 wild animals: rabbit (lepus europeus), boar (sus scrofa scrofa), asiatic jackal (canis aureus), red fox (vulpes vulpes), mouflon (ovis musimon), european river otter (lutra lutra), beech marten (martes foina), polecat (musleta putorius) and wild cat (felis silvestris). it was established that among the wild animals y. enterocolitica strains of serotype 0:3 predominated, accompanied by y. pseudotuberculosis str ...200111393816
occurrence of yersiniosis and listeriosis in wild boars in japan.from december 1994 to february 1995, 131 wild boars (sus scrofa leucomysta) living in a mountainous area in japan were examined for yersiniosis and listeriosis. of 131 wild boars, 76 (58%) were males and 55 (42%) were females. four yersinia spp. including y. pseudotuberculosis, y. enterocolitica, y. frederiksenii, and y. aldovei, were isolated from 49 (37%) of 131 wild boars. yersinia pseudotuberculosis was isolated from five (4%) of 131 wild boars. all y. pseudotuberculosis isolates were seroty ...200211838217
changes in the serum proteins of guinea-pigs immunized with pasteurella pseudotuberculosis. 195613354394
duplex real-time sybr green pcr assays for detection of 17 species of food- or waterborne pathogens in stools.a duplex real-time sybr green lightcycler pcr (lc-pcr) assay with dna extraction using the qiaamp dna stool mini kit was evaluated with regard to detection of 8 of 17 species of food- or waterborne pathogens in five stool specimens in 2 h or less. the protocol used the same lc-pcr with 20 pairs of specific primers. the products formed were identified based on a melting point temperature (t(m)) curve analysis. the 17 species of food- or waterborne pathogens examined were enteroinvasive escherichi ...200314605150
[relationship between the level of serum rearrangement of vaccinated animals and the stress of immunity to experimental plague]. 200717802808
Antimicrobial Susceptibility and Distribution of ß-Lactamase A (blaA) and ß-Lactamase B (blaB) Genes in Enteropathogenic Yersinia Species.One hundred eighty-six strains of enteropathogenic Yersinia (Y.) enterocolitica of bioserotypes 2/O:5,27, 2/O:9, 3/O:3, and 4/O:3 and 12 strains of Yersinia pseudotuberculosis of bioserotypes 1/O:1, 1/O:2, and 2/O:1 from different human (feces) and nonhuman (pig, pork, wild boar, monkey, chinchilla, mara, capybara, salad) sources collected in the years 1995-2009 were examined. Antimicrobial resistance patterns for 12 antimicrobial agents were generated using broth microdilution. The presence and ...201121970627
presence of salmonella spp., yersinia enterocolitica, yersinia pseudotuberculosis and escherichia coli o157:h7 in wild boars.the european wild boar populations are growing and spreading to new areas, which might constitute a threat to public health, since wild boar can harbour pathogens with the potential to cause serious illness in humans. tonsils, ileocaecal lymph nodes and faecal samples were collected from 88 swedish wild boars and analysed for the presence of the zoonotic pathogens salmonella spp., yersinia enterocolitica, y. pseudotuberculosis and enterohaemorrhagic escherichia coli o157:h7 (ehec). a combination ...201424512817
atypical yersinia pseudotuberculosis serotype o:3 isolated from hunted wild boars in italy.atypical yersinia pseudotuberculosis serotype o:3 was isolated from rectal contents of two wild boars hunted in italy within a regional wildlife management program. no outbreak of yersiniosis was reported in this area in the same period and no lesions were found by the veterinarian at post-mortem inspection. nevertheless, after histological examination, granulomatous lesions were detected in submandibular lymph nodes of one of the two wild boars. microbiological and bio molecular characterizatio ...201424698132
prevalence of yersinia enterocolitica and yersinia pseudotuberculosis in wild boars in the basque country, northern spain.yersiniosis is a zoonosis widely distributed in europe and swine carry different serotypes of yersinia enterocolitica and y. pseudotuberculosis. the aim of this study was to determine the prevalence of y. enterocolitica and y. pseudotuberculosis in wild boars in northern spain. the blood of wild boars (n = 505) was sampled between 2001 and 2012. seroprevalence was determined in 490 serum samples with an indirect enzyme-linked immunosorbent assay. seventy-two of the animals were also examined for ...201626790625
different enteropathogenic yersinia strains found in wild boars and domestic pigs.yersinia enterocolitica and yersinia pseudotuberculosis strains isolated from wild boars and fattening pigs were characterized and compared with each other. in wild boars, ail-positive y. enterocolitica strains belonged to bioserotypes 4/o:3 (36%, 5/14), 2/o:9 (29%, 4/14), and 2/o:5,27 (21%, 3/14). additionally, two ail-positive strains were untypable. among fattening pigs, the bioserotype 4/o:3 was dominating (91%, 71/78), and bioserotypes 2/o:5,27 (8%, 6/78) and 2/o:9 (1%, 1/78) were rare. inv ...201121288132
wild boars as an important reservoir for foodborne pathogens.one hundred fifty-three wild boars shot in the canton of geneva, switzerland, were studied for the occurrence of foodborne pathogens. tonsils and fecal samples of the animals were examined using real-time polymerase chain reaction, enzyme-linked fluorescent immunoassay, and cultural methods. the detection rate of salmonella spp., yersinia enterocolitica, yersinia pseudotuberculosis, stx-positive escherichia coli, and listeria monocytogenes was 12%, 35%, 20%, 9%, and 17%, respectively, when tonsi ...201019899962
prevalence of pathogenic yersinia enterocolitica and yersinia pseudotuberculosis in wild boars in switzerland.between october 2007 and march 2008, 153 wild boars shot in the canton of geneva in switzerland were sampled. fifty-one percent of the animals were males and 49% were females. the age of most (81%) animals varied between 6months and 2years. prevalence of enteropathogenic yersinia in tonsils and faeces was studied using culture and pcr methods and in tissue fluid of tonsils using an elisa system. prevalence of anti-yersinia antibodies in tissue fluid was 65%. detection rate of enteropathogenic ye ...200919723600
molecular virulence characteristics and kinetics of infection of yersinia pseudotuberculosis isolated from sick and healthy animals. 200312756779
defensive function of phagocytes in pseudotuberculosis. 200312756750
[immunotropic activity of panaxans--bioglycans isolated from ginseng].immunomodulating activity of panaxanes--polysaccharides isolated from the roots and culture of panax ginseng was studied. effects of both preparations were analogous. profilaxy use of panaxanes provided increased resistance to coli-sepsis in mice, increased neutrophiles and macrophages phagocytosis, stimulated humoral and cell immune factors and induced important regulating cytokins--interferone gamma and tumor necrosis factor.200111697239
pathogenicity of porcine intestinal spirochetes in gnotobiotic pigs.twelve intestinal spirochete strains of porcine origin were characterized on the basis of their phenotypic properties, by multilocus enzyme electrophoresis, and by pathogenicity testing in gnotobiotic pigs. the spirochetes used included two strains of serpulina hyodysenteriae (b204 and p18a), two strains of serpulina innocens (b256 and 4/71), one strain from the proposed new genus and species "anguillina coli" (p43/6/78), and seven non-s. hyodysenteriae strains recently isolated from united king ...19948188364
[the morphodynamics of experimental infection caused by pasteurela (yersinia) pseudotuberculosis]. 19725052120
[yersinia pseudotuberculosis. 3. isolation and cultivation]. 19734737302
distribution of virf/lcrf-positive yersinia pseudotuberculosis serotype o:3 at farm level.the distribution and persistence of pathogenic, virf/lcrf-positive yersinia pseudotuberculosis were investigated in pigs and in the pig house environment during rearing to determine possible contamination routes of early infections. based on y. pseudotuberculosis-positive tonsils of slaughter pigs in our previous study, y. pseudotuberculosis-positive animals were traced back to the farms. eight farms were visited from 6-10 months later, and a total of 155 pooled and six individual faecal samples ...200818387143
introduction into japan of pathogenic yersinia through imported pork, beef and fowl.yersinia was isolated from imported raw meat and fowl products by hela cell treatment and conventional koh-treatment, to obtain information on the origin of pathogenic yersinia in japan. forty-one strains of yersinia enterocolitica and one strain of yersinia pseudotuberculosis, serotype 4b were isolated from 38 (3.0%) of 1278 samples of pork, two (0.3%) of 612 samples of beef and two (0.3%) of 615 samples of chicken. y. enterocolitica isolates belonged to b:4/o:3 (biotype/serotype, 15 strains), ...19979105929
identification of pathogenic strains within serogroups of yersinia pseudotuberculosis and the presence of non-pathogenic strains isolated from animals and the environment.the existence of apathogenic strains of yersinia pseudotuberculosis (yp) has not so far been reported. recently, the authors characterized new serogroups and a new subgroup in yp, that is, o9, o10, o12, o13 and o14 and o1c, and the pathogenicity of these new strains was of interest. a total of 137 strains of serogroups o1c, o6, o7, o9, o10, o11, o12, o13 and o14 of yp were investigated for their pathogenicity in vivo and in vitro. although catalase activity and the inv gene were detected in all ...19979101473
[the immunomodulating properties of translam].effect of translam--beta-1,3;1,6-d-glucan on some of naturally occurring host protective mechanisms was investigated. it was shown that translam has potent biological activity: it has preventive effect on experimental bacterial infections, it stimulates absorbtion and digestion activity of mononuclear phagocytes, it effects on humoral and cell immunity. translam had mitogenic activity.200010987100
prevalence of enteropathogenic yersinia in estonian, latvian, and russian (leningrad region) pigs.tonsils of 457 fattening pigs from estonia (n = 151), latvia (n = 109), and the leningrad region of russia (n = 197) were collected between 2004 and 2007 to study the prevalence of enteropathogenic yersinia in slaughter pigs. yersinia enterocolitica and yersinia pseudotuberculosis were isolated by selective and cold enrichment. pathogenic y. enterocolitica and y. pseudotuberculosis were identified by pcr targeting the chromosomal genes ail and inv, respectively. the presence of the virulence pla ...200919580449
a highly specific one-step pcr - assay for the rapid discrimination of enteropathogenic yersinia enterocolitica from pathogenic yersinia pseudotuberculosis and yersinia pestis.based on differences within the yopt-coding region of yersinia. enterocolitica, y pseudotuberculosis and y pestis, a rapid and sensitive one-step polymerase chain reaction assay with high specificity for pathogenic y enterocolitica was developed. by this method pathogenic isolates of y enterocolitica can be easily identified and discriminated from other members of this genus. the entire coding sequence of the yopt effector gene of y. pseudotuberculosis y36 was determined.200111518333
transmission of yersinia pseudotuberculosis in the pork production chain from farm to slaughterhouse.the transmission of yersinia pseudotuberculosis in the pork production chain was followed from farm to slaughterhouse by studying the same 364 pigs from different production systems at farm and slaughterhouse levels. in all, 1,785 samples were collected, and the isolated y. pseudotuberculosis strains were analyzed by pulsed-field gel electrophoresis. the results of microbial sampling were combined with data from an on-farm observation and questionnaire study to elucidate the associations between ...200818641149
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