Chapter title |
Dietary Catechols and their Relationship to Microbial Endocrinology.
|
---|---|
Chapter number | 4 |
Book title |
Microbial Endocrinology: Interkingdom Signaling in Infectious Disease and Health
|
Published in |
Advances in experimental medicine and biology, January 2016
|
DOI | 10.1007/978-3-319-20215-0_4 |
Pubmed ID | |
Book ISBNs |
978-3-31-920214-3, 978-3-31-920215-0
|
Authors |
Shearer, Neil, Walton, Nicholas J, Walton, Nicholas J. |
Abstract |
This chapter examines the evidence that the ability of neuroendocrine hormones, notably norepinephrine and epinephrine, to stimulate bacterial growth in iron-restricted media is not limited to molecules with a catecholamine structure but is also possessed by a variety of other catechols, many of which are of plant origin and are common in the diet. Catechols derived from the diet, such as the tea flavanols, can be present in the plasma at submicromolar and micromolar concentrations, comparable with the concentrations of catecholamines that have been shown to be effective in promoting bacterial growth under conditions of iron restriction, although many dietary catechols, notably quercetin derivatives, are present in the plasma and tissues largely as conjugates, from which the catechol function has been lost. Finally, although bacterial growth promotion through relief of iron restriction appears to be exhibited by a wide range of catechols, the gene-activation effects of catecholamines demonstrated to occur in some bacteria may be much more specific, although the definitive experiments to establish structure-function relationships have yet to be reported. |
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