How does the gut control commensal bacteria?

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Offline thedoc

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How does the gut control commensal bacteria?
« on: 17/10/2011 11:03:08 »
An antibacterial protein secreted in the small intestine creates a tiny “no man’s land” between the wall of the intestine and the bacteria that live inside the gut.  Breakdown of this physical buffer could lead to Inflammatory Bowel Disease and other chronic problems...


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« Last Edit: 17/10/2011 11:03:08 by _system »

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Offline cheryl j

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How does the gut control commensal bacteria?
« Reply #1 on: 29/10/2011 07:35:57 »
There are other defenses as well, the acidic environment of the stomach, bile salts in the small intestine, lymphoid tissue in Peyers patches and possibly the appendix, antibodies in mucus, etc. And part of the defense is just other gut bacteria themselves that have formed a symbiotic relationship with us and mayout compete more aggressive, invasive bacteria.