The development of infant gut microbiome is a pivotal process affecting the ecology and function of the microbiome, as well as host health. While the establishment of the infant microbiome has been of interest for decades, the focus on gut microbial metabolism and the resulting small molecules (metabolites) has been rather limited. However, technological and computational advances are now enabling researchers to profile the plethora of metabolites in the infant gut, allowing for improved understanding of how gut microbial-derived metabolites drive microbiome community structuring and host-microbial interactions. Here, we review the current knowledge on development of the infant gut microbiota and metabolism within the first year of life, and discuss how these microbial metabolites are key for enhancing our basic understanding of interactions during the early life developmental window.
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http://dx.doi.org/10.1080/19490976.2023.2192151 | DOI Listing |
Gut Microbes
December 2025
School of Public Health, Qingdao University, Qingdao, China.
Gestational diabetes mellitus (GDM) is known to be associated with dysbiosis of offspring gut microbiota, but the mechanism remains unclear. The present prospective study explored the role of human milk fatty acid composition in this association. Mothers with GDM and normal controls were recruited at 24-28 gestational weeks.
View Article and Find Full Text PDFNutr Rev
January 2025
Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA 70808, United States.
Context: Prebiotics are often added to infant formulas to mimic the benefits of oligosaccharides found in human milk.
Objective: This systematic review and meta-analysis evaluated the effects of prebiotic-supplemented cow's milk-based formula on the gut microbiota, gut environment, growth parameters, and safety and tolerance in infants ≤6 months old, compared with a standard formula or human milk comparator.
Data Sources: Searches were performed in the PubMed, Embase, Cochrane Central Register of Controlled Trials, and ProQuest Dissertations & Theses databases.
J Allergy Clin Immunol Glob
February 2025
Division of Allergy and Immunology, Department of Medicine and Department of Pediatrics, Rush University Medical Center, Chicago, Ill.
Background: The incidence of food allergy (FA) has been increasing worldwide, causing growing concern on a global scale.
Objective: This birth cohort study analyzes the incidence of reported FA and other atopic comorbidities in children from birth to age 2 years who were living in 4 urban and semiurban areas in Iran.
Methods: Children were followed from birth until age 24 months, with follow-up questionnaires administered through parent or guardian interviews conducted when the children were aged 2, 4, 6, 12, and 24 months.
The human gut microbiome within the gastrointestinal tract continuously adapts to variations in diet, medications, and host physiology. A central strategy for genetic adaptation is epigenetic phase variation (ePV) mediated by bacterial DNA methylation, which can regulate gene expression, enhance clonal heterogeneity, and enable a single bacterial strain to exhibit variable phenotypic states. Genome-wide and site-specific ePV have been well characterized in human pathogens' antigenic variation and virulence factor production.
View Article and Find Full Text PDFPediatr Surg Int
January 2025
Department of General and Thoracic Surgery, The Hospital for Sick Children, University of Toronto, 1526-555 University Ave, Toronto, ON, M5G 1X8, Canada.
Purpose: Necrotizing enterocolitis (NEC) majorly affects premature infants, causing not only necrosis and inflammation but also feeding intolerance and gastrointestinal dysmotility, hinting at gut hormone secretion impairment. Particularly critical is the gestation period before 26 weeks where intestinal hormonal activity is partially developed, rendering preterm neonates highly susceptible to NEC. Emerging evidence suggests a role of gut hormones, especially glucagon-like peptides (GLP) in ileum development.
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