4.7 Review

Impact of Food-Derived Bioactive Compounds on Intestinal Immunity

Journal

BIOMOLECULES
Volume 11, Issue 12, Pages -

Publisher

MDPI
DOI: 10.3390/biom11121901

Keywords

immune system; mucosal immunity; plant bioactives; prebiotics; probiotics

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The gastrointestinal system is responsible for digestion and absorption of nutrients, while playing a crucial role in maintaining immune balance. The intestinal immune function aims to discriminate harmful and harmless antigens efficiently. Diet-derived bioactive compounds have been shown to impact intestinal immune function, with secondary plant metabolites and probiotics mediating health-promoting effects.
The gastrointestinal system is responsible for the digestion and the absorption of nutrients. At the same time, it is essentially involved in the maintenance of immune homeostasis. The strongest antigen contact in an organism takes place in the digestive system showing the importance of a host to develop mechanisms allowing to discriminate between harmful and harmless antigens. An efficient intestinal barrier and the presence of a large and complex part of the immune system in the gut support the host to implement this task. The continuous ingestion of harmless antigens via the diet requires an efficient immune response to reliably identify them as safe. However, in some cases the immune system accidentally identifies harmless antigens as dangerous leading to various diseases such as celiac disease, inflammatory bowel diseases and allergies. It has been shown that the intestinal immune function can be affected by bioactive compounds derived from the diet. The present review provides an overview on the mucosal immune reactions in the gut and how bioactive food ingredients including secondary plant metabolites and probiotics mediate its health promoting effects with regard to the intestinal immune homeostasis.

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