4.5 Article

Transplantation of maternal intestinal flora to the newborn after elective cesarean section (SECFLOR): study protocol for a double blinded randomized controlled trial

Journal

BMC PEDIATRICS
Volume 22, Issue 1, Pages -

Publisher

BMC
DOI: 10.1186/s12887-022-03609-3

Keywords

Microbiome; Oral fecal transplant; Newborn; Cesarean section; Development of immune system

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Funding

  1. Suomen Laaketieteen Saatio
  2. Biocodex Microbiota Foundation
  3. Foundation for Pediatric Research in Finland
  4. Paivikki and Sakari Sohlberg Foundation
  5. Finska Lakaresallskapet
  6. Academy of Finland

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This study aims to evaluate the long-term effects of maternal fecal transplant on the intestinal microbiome and immune system development in infants born by elective cesarean section.
Background: A complication of elective cesarean section (CS) delivery is its interference with the normal intestinal colonization of the infant, affecting the immune and metabolic signaling in early life-a process that has been associated with long-term morbidity, such as allergy and diabetes. We evaluate, in CS-delivered infants, whether the normal intestinal microbiome and its early life development can be restored by immediate postnatal transfer of maternal fecal microbiota (FMT) to the newborn, and how this procedure influences the maturation of the immune system. Methods: Sixty healthy mothers with planned elective CS are recruited and screened thoroughly for infections. A maternal fecal sample is taken prior to delivery and processed according to a transplantation protocol. After double blinded randomization, half of the newborns will receive a diluted aliquot of their own mother's stool orally administered in breast milk during the first feeding while the other half will be similarly treated with a placebo. The infants are clinically followed, and fecal samples are gathered weekly until the age of 4 weeks, then at the ages of 8 weeks, 3, 6, 12 and 24 months. The parents fill in questionnaires until the age of 24 months. Blood samples are taken at the age of 2-3 days and 3, 6, 12 and 24 months to assess development of major immune cell populations and plasma proteins throughout the first years of life. Discussion: This is the first study to assess long-time effects on the intestinal microbiome and the development of immune system of a maternal fecal transplant given to term infants born by CS.

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