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1/37. Molecular relatedness between isolates yersinia pseudotuberculosis from a patient and an isolate from mountain spring water.

    A 40-yr-old buddhist monk was admitted to the hospital with abdominal pain, fever, and confusion. He had a history of drinking untreated mountain spring water in his temple, and experienced the above symptoms for several days before admission. In past medical history, he had suffered from hepatic cirrhosis. yersinia pseudotuberculosis was isolated from his blood and ascitic fluid. The mountain spring water that he had ingested was cultivated and Y. pseudotuberculosis was also isolated. For identification of pathogenic Y. pseudotuberculosis, each isolate from the three sources (blood, ascitic fluid, and drinking water) was also analysed for the inv gene for Y. pseudotuberculosis and the virF gene for virulent plasmid by PCR. All strains were positive for both the virF and the inv genes and also positive for autoagglutination test. For relationship study, each isolate from the three sources was also analysed with serotyping and restriction endonuclease analysis of virulence plasmid dna (REAP) using BamHI. All belonged to the serotype 4b and REAP pattern D. Thus, all these findings supported that the mountain spring water was the source of the Y. pseudotuberculosis infection in this case. ( info)

2/37. ileitis due to yersinia pseudotuberculosis in Crohn's disease.

    We present the case of a young woman with fulminating terminal ileitis due to yersinia pseudotuberculosis, in whom Crohn's disease was subsequently diagnosed. Serological testing was prompted by radiological, macroscopic and histological changes which were atypical of Crohn's disease. We speculate that Y. pseudotuberculosis ileitis may occasionally produce an acute exacerbation of Crohn's disease, but that its occurrence may not be diagnosed if the atypical features are not recognised. In this case, the classical features of Y. pseudotuberculosis may have been modified by pre-existing Crohn's disease. We propose that, because of defects in mucosal barrier function and immunological function, patients with Crohn's may have increased susceptibility to infection by Yersinia sp. ( info)

3/37. Septicemia due to yersinia pseudotuberculosis--a case report.

    A case report is presented concerning yersinia pseudotuberculosis septicemia presenting as an acute abdominal emergency in an elderly diabetic man with multiple medical problems. ( info)

4/37. Short communication: yersinia pseudotuberculosis septicemia in an hiv-infected patient failed HAART.

    The first case of septicemia due to yersinia pseudotuberculosis in an hiv-infected person was reported. The 42-year-old woman was severely immunosuppressed despite a prolonged exposure to HAART. Specific amplicons for inv, yadA, and lcrF genes showed the pathogenetic potential of the Y. pseudotuberculosis serotype O1 isolate. A favorable clinical response to ceftriaxone and levofloxacin was observed. ( info)

5/37. yersinia pseudotuberculosis septicemia and hiv.

    Two cases of community-acquired septicemia caused by serotype-O1 yersinia pseudotuberculosis were diagnosed in middle-aged, hiv-positive, immunodeficient patients during an 8-month period. Bacterial isolates were genetically indistinguishable, but no epidemiologic link between the 2 patients was established. hiv-related immunosuppression should be regarded as a risk factor for Y. pseudotuberculosis septicemia. ( info)

6/37. Mesenteric adenitis caused by Yersinia pseudotubercolosis in a patient subsequently diagnosed with Crohn's disease of the terminal ileum.

    Although the association between inflammatory bowel disease and gastrointestinal infections has been suggested, the mechanisms involved in the pathogenesis of Crohn's disease (CD) are still undetermined. We report the case of a man, who presented with mesenteric adenitis initially due to a Yersinia pseudotubercolosis infection, who was later diagnosed with Crohn's disease. This case is in keeping with recent evidence in the literature which suggests that CD is a disease linked to abnormal immune responses to enteric bacteria in genetically susceptible individuals. ( info)

7/37. Abdominal aortic aneurysm infected by yersinia pseudotuberculosis.

    Infected aneurysms caused by Yersinia are very uncommon and are principally due to yersinia enterocolitica. We describe the first case of an infected aneurysm caused by yersinia pseudotuberculosis in an elderly patient with a history of atherosclerotic cardiovascular disease. ( info)

8/37. 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-mediated properties, including autoagglutination and calcium dependency, but was positive for chromosome-mediated properties, including invasion into hela cells and tissues of mice and the Sereny test. mice were orally infected with this pYV- strain, and rapid elimination from the intestine occurred 14 days later. Hence, the potential to inhibit the phagocytosis encoded by plasmid pYV was lacking. As the pYV- strain was recovered from the mesenteric lymph nodes and the spleen, the invasiveness was encoded by chromosomal genes. The count of the pYV- strain in the mesenteric lymph nodes increased to 10(4.6) cells per g within 4 days. These findings suggest that pYV- Y. pseudotuberculosis was the causative agent of acute mesenteric lymphadenitis in the absence of gastroenteritis. ( info)

9/37. 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 acute tubulointerstitial nephritis. ( info)

10/37. yersinia pseudotuberculosis: report of a case with endoscopic findings.

    yersinia pseudotuberculosis is an uncommon gastrointestinal pathogen, recognized as a causative agent in some cases of mesenteric adenitis. We report the clinical and endoscopic features of a case of a 6-year-old girl with abdominal pain and bloody diarrhea. Colonoscopic examination revealed aphthous ulcers in the right colon, and mucosal biopsy culture grew yersinia pseudotuberculosis. This case documents right colonic ulcers and bloody diarrhea with yersinia pseudotuberculosis. ( info)
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