Lecture 19 pathogenesis

Lecture 19 pathogenesis - Symbiosis is normal. You can...

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Symbiosis is normal. You can achieve complementation by acquiring specifc genes. .. or you can just Form a symbiotic relationship.
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The lines between mutualism, commensalism, and pathogenesis are blurry. The same genes in the same organism can be essential for mutualism. ..or can lead to disease.
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Science August 2006 In symbiosis, there is profound genetic adaptation between the partners.
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There is a lot of turnover in the lining of your intestines. The cells are constantly growing, dividing, and being shed into the intestinal lumen. E. coli “B” strains can slow the rate of turnover.
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The genes for this relationship are in an interesting genomic island.
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We are genetically adapted to having such organisms in our gut; a lack of them can lead to illness.
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E. coli B strains are also common in UTI’s and other infections. However. ..
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“Pathogenicity is not the rule. Indeed, it occurs so infrequently and involves such a relatively small number of species, considering the huge population of bacteria
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Lecture 19 pathogenesis - Symbiosis is normal. You can...

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