mjl1717
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Are there any other key words for P mirablis besides?
Enterobacteriaceae,motility, urease+,UTI,calculi,oxidase neg.,H2S+,ferment lactose and glucose
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| EMI777LY
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Gram negative rod,
urinary tract catheters
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Emily
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| bactitech
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P. mirabilis is a swarming organism that is indole negative. The other swarmer, P. vulgaris, is indole positive. P. mirabilis does NOT ferment lactose. That entry is incorrect. Both PRMI and PVUL are nonlactose fermenters. This is a pretty important concept.
Indole production splits the two swarmers. PRMI is much more common than PVUL.
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| mjl1717
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I stand corrected -Thx bactitech(concerning NON lactose fermenting
You are an asset to fine tuning this micro forum.{Imagine- that post was nearly a year ago & only a speciaist like you could do that!!
My reference for that is Hi Yield Micro but Ill guess that its probably wrong since its ONLY a review book.
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| bactitech
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Thanks so much for the nice words. P. mirabilis is an organism we deal with on a daily basis. Hopefully whoever wrote your review book has most of the other reactions listed correctly.
When one reads plates every day there are certain reactions that you see over and over again. This becomes part of the "data base" that all microbiologists build up in their heads. Some organisms you only see infrequently - others hardly ever. Yet, you must have the reactions in that data base so that you recognize what you're looking at and know what it is next time you see it. We share unusual organisms so that our younger techs get the experience of seeing unusual stuff. Working in a large microbiology lab makes it easier as you see the unusual more often than you would see it in a small micro lab.
P. mirabilis is common in UTI's. It is also common in wound cultures. It's a pain because its swarming messes up your plates and you literally have to dig out other organisms by subbing them from under the swarming to selective media, streak for isolation, and hope it works. Every subculture takes a day, so it can really hold up culture work. It's also a particularly smelly organism and not pleasant to work with.
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