This study aims to develop a therapy for restoring the gut microbiome in infants born via CS. The Study will conduct a randomized, placebo-controlled feasibility trial to assess the ability of microbiome restoration by FMT and FVT in infants born by cesarean section.
When a child is born vaginally, the passage through the birth canal provides the first and very important bacterial colonization. As the child ages, various environmental exposures, such as dietary changes and the presence of older siblings in the home, facilitate a natural maturation of the child's gut microbiome, providing a vast and continuous stimulation of the child's developing immune system. However, factors such as mode of delivery and intrapartum antibiotics can perturb this natural developmental process and cause long-term microbial derangements. The prevalence of cesarean section (CS) birth has increased globally in recent decades, and with it, antibiotic treatment to prevent perinatal infection. Similar patterns have occurred for the prevalence of chronic childhood disease, particularly asthma, with an estimated 300 million asthmatic cases worldwide. The hypothesis is that early intervention with mother-to-infant FMT can restore a CS-perturbed microbiome to a normal microbial trajectory. Another hypothesis is that seeding the virome fraction (FVT) will cause the neonate's microbiome to resemble the mother's since the transferred phages are enriched and preserved in the intestinal mucus layer, thereby providing the recipient with selective antimicrobial protection while allowing species resembling the mother's own to establish during subsequent bacterial transmission.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
QUADRUPLE
Enrollment
80
Pathogen-free microbiota from maternal stool sample is transferred from mother to infant.
Sterile-filtered and ultracentrifuged FMT, containing only viruses, is transferred from mother to infant.
Inactive solution buffer
Copsac, DBAC
Gentofte Municipality, Copenhagen, Denmark
RECRUITINGRigshospitalet
Copenhagen, Denmark
NOT_YET_RECRUITINGMicrobial compositional differences to placebo-treated infants
Intestinal microbiome composition, assessed by metagenomic sequencing of fecal matter bacterial DNA, quantified by beta-diversity indices.
Time frame: During the first year of life
Microbial compositional resemblance to vaginally-born infants
Intestinal microbiome composition, assessed by metagenomic sequencing of fecal matter bacterial DNA, quantified by beta-diversity indices.
Time frame: During the first year of life
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No intervention. This group is for secondary outcomes comparisons.