Yersinia enterocolitica est un bacille à Gram négatif de 1,3 à 3,5 µm de longueur sur 0,5 à 1,0 µm de diamètre. Il fut isolé en 1939 par Schleifstein et Coleman et baptisé Bacterium enterocoliticum puis Pasteurella pseudotuberculosis rodentium ou Pasteurella X. Il est responsable des yersinioses.

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  • Yersinia enterocolitica est un bacille à Gram négatif de 1,3 à 3,5 µm de longueur sur 0,5 à 1,0 µm de diamètre. Il fut isolé en 1939 par Schleifstein et Coleman et baptisé Bacterium enterocoliticum puis Pasteurella pseudotuberculosis rodentium ou Pasteurella X. Il est responsable des yersinioses.
  • La Yersinia enterocolítica es un representante de las enterobacteriaceae. Es un bacilo gram negativo, no esporulado, capaz de crecer dentro de una amplia escala de temperaturas, desde -1 °C hasta +40 °C. Presenta factores antifagocitarios (cápsula).Se multiplica en las mucosas y se puede transmitir a través del contacto con animales, ingestión de productos alimenticios o contaminados o agua contaminada. Raramente causa infecciones mortales.móvil a 25 C (flagelos peritricos) in móvil a los 37 C.fermenta la glucosa.No fermenta la lactosa.No proteolitico.Heterótrofa.Fisiología:pH:Neutrofilamin:4óptimo:7Max:10Temp: Psicrotrofa (desarrolla en heladera)min:0Cóptima:29 CMax:42 CClNa: 0-5%Factores de crecimiento necesarios: biotina y tiaminaVirulencia:cepas patogenas: secretan una enterotoxina resistente al calor e invaden el intestino delgado.Enterotoxina:resiste el calor (121 C - 30 min)PM:10.000-50.000 daltonsResiste el calor (congelación)Resiste la variación de pH(1-11)ZoonosisInoculo de 108 a 109
  • Yersinia enterocolitica is a species of gram-negative coccobacillus-shaped bacterium, belonging to the family Enterobacteriaceae. Yersinia enterocolitica infection causes the disease yersiniosis, which is a zoonotic disease occurring in humans as well as a wide array of animals such as cattle, deer, pigs, and birds. Many of these animals recover from the disease and become asymptomatic carriers. It infects the host by sticking to the cells of the host using Trimeric Autotransporter Adhesins (TAA).At present, the genus Yersinia includes 11 established species:Y. pestis, Y. pseudotuberculosis, Y. enterocolitica, Y. frederiksenii,Y. intermedia, Y. kristensenii, Y. bercovieri, Y. mollaretii, Y. rohdei,Y. aldovae and Y. ruckeri. Among them only Y. pestis, Y. pseudotuberculosis and certain strains of Y. enterocolitica are of pathogenic importance for humans and certain warm-blooded animals, whereas the other species are of environmental origin and may, at best, act as opportunists. However, Yersinia strains can be isolated from clinical materials and therefore have to be identified at the species level. Y. enterocolitica is a heterogeneous group of strains, which are traditionally classified by biotyping into 6 biogroups on the basis of phenotypic characteristics, and by serotyping into more than 57 O serogroups, on the basis of their O (lipopolysaccharide or LPS) surface antigen. Five of the 6 biogroups (1B and 2–5) are regarded as pathogens. However, only a few of these serogroups have been associated with disease in either humans or animals. Strains that belong to serogroups O:3 (biogroup 4), O:5,27 (biogroups 2 and 3), O:8 (biogroup 1B) and O:9 (biogroup 2) are most frequently isolated worldwide from human samples.5 However, the most important Y. enterocolitica serogroup in many European countries is serogroup O:3 followed by O:9, whereas the serogroup O:8 is mainly detected in the United States. Y. enterocolitica is widespread in nature, occurring in reservoirs ranging from the intestinal tracts of numerous mammals, avian species, cold-blooded species, and even from terrestrial and aquatic niches. Most environmental isolates are avirulent; however, isolates recovered from porcine sources contain human pathogenic serogroups. In addition, other studies have suggested that dogs, sheep, wild rodents and environmental water may also be a reservoir of pathogenic Y. enterocolitica strains. Human pathogenicstrains are usually confined to the intestinal tract and lead to enteritis/diarrhea.
  • Yersinia enterocolitica é uma enterobactéria, enteropatogênica, causadora de infecções intestinais e bacteremias. Tem a forma de bastão Gram-negativo, sendo o reservatório desse microrganismo predominantemente o porco, mas outros animais como roedores, bovinos, cavalos, coelhos, cachorros e gatos também podem apresentar.Em crianças, os sintomas são febre, dores abdominais e diarréia; em crianças mais velhas e em adultos, os sintomas predominantes são dor abdominal no lado direito e febre. Complicações sérias, tais como artrite reumatóide (síndrome de Reiter), erupções na pele (eritema nodoso), conjuntivite, osteomielite e bacteremia também podem vir a ocorrer.O diagnóstico é realizado através da detecção do microrganismo nas fezes dos doentes, mas o microrganismo pode ser detectado também em outros materiais clínicos, como sangue, urina, bile, líquido sinovial, de nódulos linfáticos e material da garganta.A Y. enterocolitica é adquirida decorrente de ingestão de leite não pasteurizado, água não tratada, carne de porco contaminada, crua ou mal cozida. Já em crianças podem contaminar-se através de contato com pessoas infectadas, que não têm bons hábitos de higiene ao manusear mamadeiras, chupetas ou brinquedos.
  • Yersinia enterocolitica adalah spesies bakteri gram-negatif, tidak menghasilkan spora, fakultatif anaeobik, yang termasuk ke dalam golongan Enterobacteriacea. Pada suhu 20-25 °C, bakteri ini dapat bergerak (motil), namun pada suhu 37 °C tidak terjadi pergerakan. Sebagian galur (strain) dari bakteri ini merupakan patogen penyebab penyakit yang penyebarannya terjadi melalui makanan, seperti daging babi dan susu. Selain melalui makanan, bakteri ini juga menyebar melalui minuman dan dapat ditemukan pada permukaan air dan sistem pembuangan air. Y. enterocolitica dapat beradaptasi dengan suhu dingin dan bahkan tetap bermultiplikasi (memperbanyak diri) pada suhu 4 °C. Infeksi Y. enterocolitica pada sistem gastrointestinal dapat menyebabkan enterokolitis, limfadenitis, serta gastroenteritis. Gejala yang timbul akibat infeksi Y. enterocolitica adalah diare yang diikuti demam, muntah, dan sakit perut (abdominal).
  • Yersinia enterocolitica is een gram-negatieve bacil (bacterie) uit de familie van de enterobacteriaceae. Als een humaan pathogeen is Y. enterocolica een verwekker van enteritis (maag- en darmontstekingen) en diarree. Een infectie met Y. enterocolitica kent meestal een mild en zelflimiterend ziekteverloop maar kan variëren van asymptomatisch tot levensbedreigend.Een besmetting met Y. enterocolitica wordt yersiniose genoemd en kan in bepaalde gevallen verward worden met een acute appendicitis.
  • Yersinia enterocolitica ist zusammen mit Y. pseudotuberculosis der Erreger der Yersiniose.
  • La Yersinia enterocolitica (Schleifstein & Coleman 1939) è una specie di batterio coccobacillo gram-negativo, che provoca una zoonosi sia nell'uomo che in alcune altre specie animali quali gatti, maiali e alcuni uccelli, che possono diventare portatori sani della yersiniosi, una forma di peste che colpisce principalmente il basso tratto digerente (intestino tenue e crasso).
  • Yersinia enterocolitica je gramnegativní tyčinka bakterie z čeledi Enterobactericeae. Je významným patogenem zvířat a člověka s velkým zoonotickým potenciálem. Bakterie je fakultativně anaerobní, oxidáza negativní a fermentuje glukózu. U člověka způsobuje zánět tenkého, tlustého nebo slepého střeva provázené průjmy. Dále může způsobit záněty kloubů a zvětšení mízních uzlin. Y. enterocolitica je citlivá na chinolony.
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  • Yersinia enterocolitica est un bacille à Gram négatif de 1,3 à 3,5 µm de longueur sur 0,5 à 1,0 µm de diamètre. Il fut isolé en 1939 par Schleifstein et Coleman et baptisé Bacterium enterocoliticum puis Pasteurella pseudotuberculosis rodentium ou Pasteurella X. Il est responsable des yersinioses.
  • Yersinia enterocolitica is een gram-negatieve bacil (bacterie) uit de familie van de enterobacteriaceae. Als een humaan pathogeen is Y. enterocolica een verwekker van enteritis (maag- en darmontstekingen) en diarree. Een infectie met Y. enterocolitica kent meestal een mild en zelflimiterend ziekteverloop maar kan variëren van asymptomatisch tot levensbedreigend.Een besmetting met Y. enterocolitica wordt yersiniose genoemd en kan in bepaalde gevallen verward worden met een acute appendicitis.
  • Yersinia enterocolitica ist zusammen mit Y. pseudotuberculosis der Erreger der Yersiniose.
  • La Yersinia enterocolitica (Schleifstein & Coleman 1939) è una specie di batterio coccobacillo gram-negativo, che provoca una zoonosi sia nell'uomo che in alcune altre specie animali quali gatti, maiali e alcuni uccelli, che possono diventare portatori sani della yersiniosi, una forma di peste che colpisce principalmente il basso tratto digerente (intestino tenue e crasso).
  • Yersinia enterocolitica je gramnegativní tyčinka bakterie z čeledi Enterobactericeae. Je významným patogenem zvířat a člověka s velkým zoonotickým potenciálem. Bakterie je fakultativně anaerobní, oxidáza negativní a fermentuje glukózu. U člověka způsobuje zánět tenkého, tlustého nebo slepého střeva provázené průjmy. Dále může způsobit záněty kloubů a zvětšení mízních uzlin. Y. enterocolitica je citlivá na chinolony.
  • Yersinia enterocolitica is a species of gram-negative coccobacillus-shaped bacterium, belonging to the family Enterobacteriaceae. Yersinia enterocolitica infection causes the disease yersiniosis, which is a zoonotic disease occurring in humans as well as a wide array of animals such as cattle, deer, pigs, and birds. Many of these animals recover from the disease and become asymptomatic carriers.
  • Yersinia enterocolitica é uma enterobactéria, enteropatogênica, causadora de infecções intestinais e bacteremias. Tem a forma de bastão Gram-negativo, sendo o reservatório desse microrganismo predominantemente o porco, mas outros animais como roedores, bovinos, cavalos, coelhos, cachorros e gatos também podem apresentar.Em crianças, os sintomas são febre, dores abdominais e diarréia; em crianças mais velhas e em adultos, os sintomas predominantes são dor abdominal no lado direito e febre.
  • La Yersinia enterocolítica es un representante de las enterobacteriaceae. Es un bacilo gram negativo, no esporulado, capaz de crecer dentro de una amplia escala de temperaturas, desde -1 °C hasta +40 °C. Presenta factores antifagocitarios (cápsula).Se multiplica en las mucosas y se puede transmitir a través del contacto con animales, ingestión de productos alimenticios o contaminados o agua contaminada.
  • Yersinia enterocolitica adalah spesies bakteri gram-negatif, tidak menghasilkan spora, fakultatif anaeobik, yang termasuk ke dalam golongan Enterobacteriacea. Pada suhu 20-25 °C, bakteri ini dapat bergerak (motil), namun pada suhu 37 °C tidak terjadi pergerakan. Sebagian galur (strain) dari bakteri ini merupakan patogen penyebab penyakit yang penyebarannya terjadi melalui makanan, seperti daging babi dan susu.
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  • Yersinia enterocolitica
  • Yersinia enterocolitica
  • Yersinia enterocolitica
  • Yersinia enterocolitica
  • Yersinia enterocolitica
  • Yersinia enterocolitica
  • Yersinia enterocolitica
  • Yersinia enterocolitica
  • Yersinia enterocolitica
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