4.7 Article

Resistant potato starch supplementation reduces serum histamine levels in healthy adults with links to attenuated intestinal permeability

Journal

JOURNAL OF FUNCTIONAL FOODS
Volume 108, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.jff.2023.105740

Keywords

Prebiotic; Resistant starch; Histamine; Hydroxylysine; Intestinal permeability; Polyamine; Beta-oxidation

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This study found that resistant potato starch (RPS) can reduce histamine levels and decrease the quantity of bacteria secreting histamine, while enhancing gut barrier function.
Histamine from our diet or gut microbes can trigger gastrointestinal disturbances, and resistant potato starch (RPS) has previously been shown to alleviate these symptoms while increasing levels of health-associated bacteria such as Akkermansia through unknown mechanisms. Post hoc exploratory metabolomic analysis of serum amino acid, amine, and carnitine metabolites in participants consuming 3.5 g/day RPS or placebo (n = 48) was performed using liquid chromatography-mass spectrometry to determine whether RPS positively influences histamine metabolism and related parameters. Histamine levels were significantly reduced by RPS treatment, but histamine-degrading enzyme products were unaffected by RPS. RPS also reduced histamine-secreting Haemophilus and Lactobacillus. Further, metabolites associated with intestinal permeability, including 5-hydroxylysine, acetylspermidine, and short- and medium-chain carnitines ratios, were significantly reduced by RPS treatment, suggesting decreased serum histamine might be related to enhanced gut barrier function. These metabolomic findings expand the value of supplementing the diet with RPS.

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