Bacteriological and Immunological Profiling of Meconium and Fecal Samples from Preterm Infants : A Two-Year Follow-Up Study

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Gomez , M , Moles , L , Espinosa-Martos , I , Bustos , G , de Vos , W M , Fernandez , L , Rodriguez , J M , Fuentes , S & Jimenez , E 2017 , ' Bacteriological and Immunological Profiling of Meconium and Fecal Samples from Preterm Infants : A Two-Year Follow-Up Study ' , Nutrients , vol. 9 , no. 12 , 1293 . https://doi.org/10.3390/nu9121293

Title: Bacteriological and Immunological Profiling of Meconium and Fecal Samples from Preterm Infants : A Two-Year Follow-Up Study
Author: Gomez, Marta; Moles, Laura; Espinosa-Martos, Irene; Bustos, Gerardo; de Vos, Willem M.; Fernandez, Leonides; Rodriguez, Juan M.; Fuentes, Susana; Jimenez, Esther
Contributor: University of Helsinki, Medicum
Date: 2017-12
Language: eng
Number of pages: 19
Belongs to series: Nutrients
ISSN: 2072-6643
URI: http://hdl.handle.net/10138/231320
Abstract: An abnormal colonization pattern of the preterm gut may affect immune maturation and exert a long-term influence on the intestinal bacterial composition and host health. However, follow-up studies assessing the evolution of the fecal microbiota of infants that were born preterm are very scarce. In this work, the bacterial compositions of fecal samples, obtained from sixteen 2-year-old infants were evaluated using a phylogenetic microarray; subsequently, the results were compared with those obtained in a previous study from samples of meconium and feces collected from the same infants while they stayed in the neonatal intensive care unit (NICU). In parallel, the concentration of a wide range of cytokines, chemokines, growth factors and immunoglobulins were determined in meconium and fecal samples. Globally, a higher bacterial diversity and a lower interindividual variability were observed in 2-year-olds' feces, when compared to the samples obtained during their first days of life. Hospital-associated fecal bacteria, that were dominant during the NICU stay, seemed to be replaced, two years later, by genera, which are usually predominant in the healthy adult microbiome. The immune profile of the meconium and fecal samples differed, depending on the sampling time, showing different immune maturation statuses of the gut.
Subject: prematurity
infant gut microbiota
DNA microarray
immune maturation
INTESTINAL MICROBIOTA
GUT MICROBIOTA
HEALTHY INFANTS
GESTATIONAL-AGE
IMMUNE-SYSTEM
HUMAN-MILK
IGA
COLONIZATION
FORMULA
OLIGOSACCHARIDES
3111 Biomedicine
416 Food Science
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