Yersinia enterocolitica: Difference between revisions
(New page: Y. enterocolitica are gram-negative rod-shaped bacteria that give rise to food poisoning. Other species in this family include Y. pseudotuberculosis and Y. pestis, all of which are known p...) |
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Y. enterocolitica are gram-negative rod-shaped bacteria that give rise to food poisoning. Other species in this family include Y. pseudotuberculosis and Y. pestis, all of which are known pathogens. Y. enterocolitica are found most often in feces and wound, but they can also contaminate food and water sources. However, only a few strains of Y. Enterocolitica cause diseases in human and especially in pigs(12). (6, 1,2) Understanding of Y. enterocolitica is significant due to increasing numbers of infections by this species in the past 30 years. This pathogen can induce gastroenteritis, which produces gastrointestinal mucous membrane inflammation similar to that caused by salmonella species.(4) | Y. enterocolitica are gram-negative rod-shaped bacteria that give rise to food poisoning. Other species in this family include Y. pseudotuberculosis and Y. pestis, all of which are known pathogens. Y. enterocolitica are found most often in feces and wound, but they can also contaminate food and water sources. However, only a few strains of Y. Enterocolitica cause diseases in human and especially in pigs(12). (6, 1,2) Understanding of Y. enterocolitica is significant due to increasing numbers of infections by this species in the past 30 years. This pathogen can induce gastroenteritis, which produces gastrointestinal mucous membrane inflammation similar to that caused by salmonella species.(4) | ||
Isolation of Enterocolitica enhances the understanding of this organism as pathogen. A few techniques were used to isolate Y. Enterocolitica. A “cold-temperature enrichment” procedure was performed from stool samples in 1975 at University of California, Los Angeles. Cold enrichment method takes into account the slow growth of this organism at 37 C by treating the sample with saline and store in 4C before proceeding to the normal examination and culturing of Y. Enterocolitica. This has enhanced the recovery of Y. Enterocolitica compare to the conventional procedure without cold enrichment (14). In addition, MacConkey agar and medium that contains Trypticase soy broth, yeast extract, bile salts and Irgasan at 12 C can also recover certain strains of Y. Enterocolitica. These methods were useful in isolating virulent strains from procine tongues (15) | |||
Revision as of 20:55, 3 June 2007
Y. enterocolitica are gram-negative rod-shaped bacteria that give rise to food poisoning. Other species in this family include Y. pseudotuberculosis and Y. pestis, all of which are known pathogens. Y. enterocolitica are found most often in feces and wound, but they can also contaminate food and water sources. However, only a few strains of Y. Enterocolitica cause diseases in human and especially in pigs(12). (6, 1,2) Understanding of Y. enterocolitica is significant due to increasing numbers of infections by this species in the past 30 years. This pathogen can induce gastroenteritis, which produces gastrointestinal mucous membrane inflammation similar to that caused by salmonella species.(4)
Isolation of Enterocolitica enhances the understanding of this organism as pathogen. A few techniques were used to isolate Y. Enterocolitica. A “cold-temperature enrichment” procedure was performed from stool samples in 1975 at University of California, Los Angeles. Cold enrichment method takes into account the slow growth of this organism at 37 C by treating the sample with saline and store in 4C before proceeding to the normal examination and culturing of Y. Enterocolitica. This has enhanced the recovery of Y. Enterocolitica compare to the conventional procedure without cold enrichment (14). In addition, MacConkey agar and medium that contains Trypticase soy broth, yeast extract, bile salts and Irgasan at 12 C can also recover certain strains of Y. Enterocolitica. These methods were useful in isolating virulent strains from procine tongues (15)
