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Acute physiological effects following Bacillus subtilis DE111 oral ingestion – a randomised, double blinded, placebo-controlled study

In: Beneficial Microbes
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J. Colom Deerland Probiotics and Enzymes, Food Science Building, University College Cork, Cork, Ireland.

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D. Freitas Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland.

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A. Simon Deerland Probiotics and Enzymes, Food Science Building, University College Cork, Cork, Ireland.

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E. Khokhlova Deerland Probiotics and Enzymes, Food Science Building, University College Cork, Cork, Ireland.

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S. Mazhar Deerland Probiotics and Enzymes, Food Science Building, University College Cork, Cork, Ireland.

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M. Buckley Mercy University Hospital, Grenville PI, Cork, Ireland.

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C. Phipps Deerland Probiotics and Enzymes, 3800 Cobb International Boulevard Kennesaw, GA, USA 30152, USA.

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J. Deaton Deerland Probiotics and Enzymes, 3800 Cobb International Boulevard Kennesaw, GA, USA 30152, USA.

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A. Brodkorb Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland.

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K. Rea Deerland Probiotics and Enzymes, Food Science Building, University College Cork, Cork, Ireland.

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Open Access

Previous studies using ileostomy samples from study participants demonstrated that the spore-forming probiotic Bacillus subtilis DE111® can germinate in the small intestine as early as 4 hours after ingestion. Metabolomics, proteomics and sequencing technologies, enabled further analysis of these samples for the presence of hypoglycaemic, hypolipidemic, antioxidant, anti-inflammatory and antihypertensive molecules. In the DE111 treatment group, the polyphenols trigonelline and 2,5-dihydroxybenzoic acid, orotic acid, the non-essential amino acid cystine and the lipokine 12,13-diHome were increased. DE111 also reduced acetylcholine levels in the ileostomy samples, and increased the expression of leucocyte recruiting proteins, antimicrobial peptides and intestinal alkaline phosphatases of the brush border in the small intestine. The combination of B. subtilis DE111 and the diet administered during the study increased the expression of the proteins phosphodiesterase ENPP7, ceramidase ASAH2 and the adipokine Zn-alpha-2-glycoprotein that are involved in fatty acid and lipid metabolism. Acute B. subtilis DE111 ingestion had limited detectable effect on the microbiome, with the main change being its increased presence. These findings support previous data suggesting a beneficial role of DE111 in digestion, metabolism, and immune health that appears to begin within hours of consumption.

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