Baby 2 Baby Beneficial Bacteria
- Conditions
- Transmission
- Interventions
- Dietary Supplement: L. reuteri probioticDietary Supplement: B. longum subsp. infantis
- Registration Number
- NCT05703659
- Lead Sponsor
- University of Florida
- Brief Summary
The investigators will recruit mother-infant dyads to attend weekly lactation support groups and randomize infants to receive either an HMO consuming or non-HMO consuming probiotic. The investigators will collect infant stool before and after support group attendance. The investigators will use qPCR and metagenomic sequencing to test if the study probiotics or other bacteria transmit between infants. The investigators anticipate HMO consuming bacteria will and non-HMO consuming bacteria will not transmit between infants.
- Detailed Description
The investigators will recruit mother-infant dyads to attend weekly lactation support groups for five weeks and randomize infants to receive either an HMO consuming (B. longum subsp. infantis) or non-HMO consuming (L. reuteri) probiotic. The investigators will collect a baseline infant stool sample and maternal milk sample before attendance at the first lactation support group meeting. At the first support group meeting, mothers will be provided with the open label probiotic their infant was randomized to receive, and will give the probiotic daily for the next 28 days. The investigators will collect a second infant stool sample and a second milk sample at the final lactation support group meeting. The investigators will use qPCR and metagenomic sequencing to test if the study probiotics or other bacteria transmit from the infants who received a specific species to the infants who did not receive that species. We will also test to see if the probiotic given to infants is detectable in milk samples. The investigators anticipate HMO consuming bacteria will and non-HMO consuming bacteria will not transmit between infants.
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- All
- Target Recruitment
- 60
- Healthy singleton pregnancy, term delivery (>= 36 weeks corrected gestational age)
- Maternal intent to exclusively breastfeed for the first six months of infant life (intent to breastfeed for six months correlates with longer duration of breastfeeding, this increases the chance that mothers will still be breastfeeding at the end of the study)
- Maternal vaccination against COVID19 (2 doses Pfizer or Moderna and within 6 months of second dose or 2 doses Pfizer or Moderna and booster.) COVID vaccination is required for maternal participation as this is a study meant to enable transmission of beneficial bacteria species between infants, and infants are too young to be vaccinated.
- Maternal drug abuse
- Infant congenital abnormalities
- Infant age greater than 1 month at first lactation support group meeting (younger infants will have less developed microbiomes, increasing the chance of successful transmission of bacteria)
- Intent to provide a non-study probiotics to the infant
- Known immunocompromised status of the infant.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Non-HMO consuming bacteria L. reuteri probiotic Infants will be given a daily non-HMO consuming probiotic (L. reuteri) for four weeks HMO consuming bacteria B. longum subsp. infantis Infants will given a daily HMO consuming probiotic (B. infantis) for four weeks
- Primary Outcome Measures
Name Time Method Transmission of probiotics to non-supplemented infants 4 weeks Percentage of infants with detectable levels of B. infantis who were not given a B. infantis probiotic and were not colonized by B. infantis at baseline OR percentage of infants with detectable levels of L. reuteri who were not given an L. reuteri probiotic and were not colonized by L. reuteri at baseline.
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
University of Florida
🇺🇸Gainesville, Florida, United States