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Neonatal sepsis is a major cause of childhood mortality. Limited diagnostic tools and mechanistic insights have hampered our abilities to develop prophylactic or therapeutic interventions. Biomarkers in human neonatal sepsis have been repeatedly identified as associated with dysregulation of angiopoietin signaling and altered arachidonic acid metabolism.
Previous research has shown that immune development during the first week of life, i.e. ontogeny, is progressive, consistent and robust, involving large numbers of differentially expressed genes at each sampled time point.
Protection of newborns from infection can be achieved through maternal or vaccine-induced antibodies, but the factors influencing vaccine protection (correlate of protection) and subsequent infant immunity remain insufficiently understood. Further investigation is essential to optimize early-life vaccination strategies.
Water chlorination is essential for controlling harmful microbes in drinking water; however, the antimicrobial effects of chlorine-based disinfectants present in tap water may influence early-life gut microbial ecology.
Human milk is a rich source of immunomodulatory factors that influence the development of the infant immune system, including susceptibility to allergic diseases. Among these components, milk antibodies have been extensively studied for their role in protecting against infections; however, their potential contribution to allergy prevention may be equally important. The mechanisms of protection include allergen exclusion, enhanced and targeted antigen presentation, immune modulation via shaping of the infant gut microbiome, and direct regulation of gut immune responses.
Dynamic molecular changes in early life follow a robust ontogeny as the infant immune system adapts to the demands of its new environment. Studies of plasma immunomodulatory cytokines and chemokines have previously demonstrated ontogenetic patterns of immune development across the first week of life. However, how plasma cytokine and chemokines concentrations evolve over the first 4 months of life remains unknown.
Valerie Verhasselt MD, PhD Head, Immunology and Breastfeeding 0402997617 Valerie.verhasselt@thekids.org.au Head, Immunology and Breastfeeding @
Previous reports suggested that food proteins present in human milk (HM) may trigger symptoms in allergic children during breastfeeding, but existing evidence has never been reviewed systematically.
Valerie Verhasselt MD, PhD Head, Immunology and Breastfeeding 0402997617 Valerie.verhasselt@thekids.org.au Head, Immunology and Breastfeeding @
Maheshwar Bhasin, PhD Student, Centre for Immunology and breastfeeding