gastroenteritis traveller's diarrhea
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Healthy male subjects, aged 18-55 yrs, living in the Ede/Wageningen neighbourhood - Informed consent -Availability of internet connection - Willingness to replace habitual dairy product intake with the supplied lowcalcium soy products - Willingness to abstain from products with high amounts of prebiotic fibers and from products with probiotics (except for the supplied one) starting 1 month prior to study start - Willingness to give up blood donation from 1 month before the start of the experiment and during the entire experimental period.
Exclusion criteria
Exclusion criteria: Current or previous underlying disease of the GI tract - Allergy to milk products or lactose intolerance (selfreported)- Allergy to soy products (self-reported) - Use of antibiotics, norit, laxatives (up till 6 months prior to inclusion), cholestyramine, acid burn inhibitors or immune suppressive (up till 3 months prior to inclusion), and pre- and probiotics (up till 1 month prior to inclusion)- High titer serum antibodies against ETEC (10 ml blood sample collected at screening). - Vegetarians - Vegans - Heavy alcohol use (>4 consumptions/day or >20/week) -Drug use
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Primary study outcomes •Fecal ETEC excretion with time as marker of the colonization resistance •Total daily fecal output as marker of diarrhea | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary study outcomes •Bowel habits •Frequency and severity of gastrointestinal symptoms •Diarrhea severity (as measured by fecal dry weight excretion and % fecal dry weight) •Specific serum antibody response to CFA-II Tertiary study outcomes •Opportunistic pathogens in feces •Calprotectin in feces •Total faecal and salivary sIgA The performance of analyses of tertiary study outcomes will depend on the results of the primary and secondary study outcomes. | — |
Countries
Netherlands