Mapping the MoA Behind GI Protection From Bif195

Subjects will participate in the trial for a total duration of approximately 17 weeks including the run-in phase. Besides the screening visit, the trial will consist of 4 visits.

After having given their written informed consent, subjects will complete the screening procedures to evaluate their eligibility for participation in the trial and complete a run-in period of two weeks duration to washout possible pre-trial probiotics and/or use of medication. On the morning of day 4 after baseline assessments at Visit 2, all subjects will start daily intake of 300 mg ASA in combination with Bif195 or placebo in a ratio of 1:1 according to the randomisation performed at Visit 2.

At visit 2 - 5, all subjects will be biopsied from the upper small intestine and the ventricle during a gastroscopy procedure. At each of these 4 visits, 6 biopsies will be taken from pre-specified locations in the duodenum and 2 biopsies will be taken from the ventricle (approximately 5 mg each). Luminal fluids will also be collected during the gastroscopy (approximately 2 ml per visit). One venous blood sample (of 20 ml per visit) will also be collected at each of these visits.

The analysis on biopsies and luminal fluid samples will include a combination of transcriptomic, microbiome, proteomics and metabolomics analysis.

Inclusion criteria

• • Written informed consent

• Healthy and without any gastrointestinal discomfort/pain or other significant symptoms
• Age ≥ 18 and ≤ 40 years
• Willing to abstain from any other probiotic products and/or medication known to alter gastrointestinal function throughout the participation of the trial

Exclusion criteria

-