doc4life
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What r the urease positive organisms?
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| cherry
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wild guess, look these up...helicobacter pylori...
Whats characteristic of proteus in UTI??
(i cant quite recall)
;icon_chery:
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| mjl1717
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doc4life-this is another big can of worms,but I love it.
For starters Enterobacteriaceae- Proteus mirablis, Proteus vulgarus, Klebsiella pneumonia, Morganella Morganelli, Yersinia entercolitica, Some Providencia, Some Enterobacter
Gram + bacilli--Clostridia Sordelli
no cell wall -Ureaplasma Urealyticum
gram-,microaerophilic,curved rod-H.Pylori
Gram - , anaerobic baccili-Bacteroides Ureallyticus
Gram - ,facultative anaerobic bacilli (non Enterobacteriaceae)-strains of Vibrio parahemolyticus in Japan
they all hydrolyze urea to ammonia :idea:
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| doc4life
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Thats amazing collection mjl1717.
There r 2 more urease positive organisms
1. nocardia
2. Cryptococcus
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| Ouli Maty
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Mnemonic PUNCH
Proteus
Ureaplasma
Nocardia
Cryptococcus
Helicobacter
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deep breathing...
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| doc4life
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good mnemonic
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| mjl1717
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Maty Thx ur acknowledged :shock:
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| mjl1717
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rpt
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| Ouli Maty
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Sorry, but I don't remember the source. For sure it is not mine.
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deep breathing...
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| bactitech
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Some Klebsiella are WEAKLY urea positive, so I really wouldn't put Kleb in this group. Morganella are positive, but Providencia are negative. Check out this link:
http://service.merck.de/microbiology/tedisdata/pr...
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| owen_osh
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I think S. Saprophyticus has urease too.
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| bactitech
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It may, but this reaction is not used in its identification in a clinical laboratory. We set up a Novobiocin disc and incubate overnight. If the zone size is less than a certain size (can't remember offhand what the cutoff is), the coagulase negative Staphylococcus is identified as Staph. sapro. If it's larger than the cutoff zone size, the ID remains as CNS (with no further speciation). The only time we do this is on positive urine cultures from women of childbearing age.
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