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Infant microbiome

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https://www.readbyqxmd.com/read/28538696/immune-components-in-human-milk-are-associated-with-early-infant-immunological-health-outcomes-a-prospective-three-country-analysis
#1
Daniel Munblit, Marina Treneva, Diego G Peroni, Silvia Colicino, Li Yan Chow, Shobana Dissanayeke, Alexander Pampura, Attilio L Boner, Donna T Geddes, Robert J Boyle, John O Warner
The role of breastfeeding in improving allergy outcomes in early childhood is still unclear. Evidence suggests that immune mediators in human milk (HM) play a critical role in infant immune maturation as well as protection against atopy/allergy development. We investigated relationships between levels of immune mediators in colostrum and mature milk and infant outcomes in the first year of life. In a large prospective study of 398 pregnant/lactating women in the United Kingdom, Russia and Italy, colostrum and mature human milk (HM) samples were analysed for immune active molecules...
May 24, 2017: Nutrients
https://www.readbyqxmd.com/read/28534028/mechanisms-affecting-the-gut-of-preterm-infants-in-enteral-feeding-trials
#2
Nicholas D Embleton, Janet E Berrington, Jon Dorling, Andrew K Ewer, Edmund Juszczak, John A Kirby, Christopher A Lamb, Clare V Lanyon, William McGuire, Christopher S Probert, Stephen P Rushton, Mark D Shirley, Christopher J Stewart, Stephen P Cummings
Large randomized controlled trials (RCTs) in preterm infants offer unique opportunities for mechanistic evaluation of the risk factors leading to serious diseases, as well as the actions of interventions designed to prevent them. Necrotizing enterocolitis (NEC) a serious inflammatory gut condition and late-onset sepsis (LOS) are common feeding and nutrition-related problems that may cause death or serious long-term morbidity and are key outcomes in two current UK National Institutes for Health Research (NIHR) trials...
2017: Frontiers in Nutrition
https://www.readbyqxmd.com/read/28530140/associations-of-nasopharyngeal-metabolome-and-microbiome-with-severity-among-infants-with-bronchiolitis-a-multi-omic-analysis
#3
Christopher J Stewart, Jonathan M Mansbach, Matthew C Wong, Nadim J Ajami, Joseph F Petrosino, Carlos A Camargo, Kohei Hasegawa
RATIONALE: Bronchiolitis is the most common lower respiratory infection in infants; however, it remains unclear which infants with bronchiolitis will develop severe illness. In addition, while emerging evidence indicates associations of the upper-airway microbiome with bronchiolitis severity, little is known about the mechanisms linking airway microbes and host response to disease severity. OBJECTIVES: To determine the relations among the nasopharyngeal airway metabolome profiles, microbiome profiles, and severity in infants with bronchiolitis...
May 21, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28512451/colonization-and-succession-within-the-human-gut-microbiome-by-archaea-bacteria-and-microeukaryotes-during-the-first-year-of-life
#4
Linda Wampach, Anna Heintz-Buschart, Angela Hogan, Emilie E L Muller, Shaman Narayanasamy, Cedric C Laczny, Luisa W Hugerth, Lutz Bindl, Jean Bottu, Anders F Andersson, Carine de Beaufort, Paul Wilmes
Perturbations to the colonization process of the human gastrointestinal tract have been suggested to result in adverse health effects later in life. Although much research has been performed on bacterial colonization and succession, much less is known about the other two domains of life, archaea, and eukaryotes. Here we describe colonization and succession by bacteria, archaea and microeukaryotes during the first year of life (samples collected around days 1, 3, 5, 28, 150, and 365) within the gastrointestinal tract of infants delivered either vaginally or by cesarean section and using a combination of quantitative real-time PCR as well as 16S and 18S rRNA gene amplicon sequencing...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28492938/association-between-breast-milk-bacterial-communities-and-establishment-and-development-of-the-infant-gut-microbiome
#5
Pia S Pannaraj, Fan Li, Chiara Cerini, Jeffrey M Bender, Shangxin Yang, Adrienne Rollie, Helty Adisetiyo, Sara Zabih, Pamela J Lincez, Kyle Bittinger, Aubrey Bailey, Frederic D Bushman, John W Sleasman, Grace M Aldrovandi
Importance: Establishment of the infant microbiome has lifelong implications on health and immunity. Gut microbiota of breastfed compared with nonbreastfed individuals differ during infancy as well as into adulthood. Breast milk contains a diverse population of bacteria, but little is known about the vertical transfer of bacteria from mother to infant by breastfeeding. Objective: To determine the association between the maternal breast milk and areolar skin and infant gut bacterial communities...
May 8, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28480290/group-b-streptococci-colonization-in-pregnant-guatemalan-women-prevalence-risk-factors-and-vaginal-microbiome
#6
Anne-Marie Rick, Angie Aguilar, Rosita Cortes, Remei Gordillo, Mario Melgar, Gabriela Samayoa-Reyes, Daniel N Frank, Edwin J Asturias
BACKGROUND: Infection causes 1 of every 5 neonatal deaths globally. Group B Streptococcus (GBS) is the most significant pathogen, although little is known about its epidemiology and risk in low-income countries. METHODS: A cross-sectional study in 2015 at a public hospital in Guatemala City enrolled women ≥35 weeks' gestation. Vaginal and rectal swabs were processed using Lim broth and GBS CHROMagar then agglutination testing. Risk factors were assessed using multivariate analysis...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28473973/salivary-diagnostics-in-pediatrics-applicability-translatability-and-limitations
#7
REVIEW
Mona Hassaneen, Jill L Maron
In the last decade, technological advances, combined with an improved appreciation of the ability of saliva to inform caregivers about both oral health and systemic disease, have led to the emergence of salivary diagnostic platforms. However, the majority of these assays have targeted diseases that more commonly affect the adult population, largely neglecting infants and children who arguably could benefit the most from non-invasive assessment tools for health monitoring. Gaining access into development, infection, and disease through comprehensive "omic" analyses of saliva could significantly improve care and enhance health access...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28464793/icover-an-interactive-visualization-tool-for-verification-and-refinement-of-metagenomic-bins
#8
Bertjan Broeksema, Magdalena Calusinska, Fintan McGee, Klaas Winter, Francesco Bongiovanni, Xavier Goux, Paul Wilmes, Philippe Delfosse, Mohammad Ghoniem
BACKGROUND: Recent advances in high-throughput sequencing allow for much deeper exploitation of natural and engineered microbial communities, and to unravel so-called "microbial dark matter" (microbes that until now have evaded cultivation). Metagenomic analyses result in a large number of genomic fragments (contigs) that need to be grouped (binned) in order to reconstruct draft microbial genomes. While several contig binning algorithms have been developed in the past 2 years, they often lack consensus...
May 2, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28456910/microbes-and-the-role-of-antibiotic-treatment-for-wheezy-lower-respiratory-tract-illnesses-in-preschool-children
#9
REVIEW
Christina G Kwong, Leonard B Bacharier
PURPOSE OF REVIEW: Antibiotics are commonly used to treat wheezy lower respiratory tract illnesses in preschoolers, although these infections have been traditionally thought to be predominantly of viral origin. Our purpose is to review recent research pertaining to the role of antibiotics in lower respiratory tract illnesses and on subsequent asthma development, as well as the possible mechanisms of their effects. RECENT FINDINGS: Increasing evidence suggests that asthma pathogenesis is associated with events during infancy and early childhood, particularly respiratory tract infections...
May 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28454555/a-critical-assessment-of-the-sterile-womb-and-in-utero-colonization-hypotheses-implications-for-research-on-the-pioneer-infant-microbiome
#10
REVIEW
Maria Elisa Perez-Muñoz, Marie-Claire Arrieta, Amanda E Ramer-Tait, Jens Walter
After more than a century of active research, the notion that the human fetal environment is sterile and that the neonate's microbiome is acquired during and after birth was an accepted dogma. However, recent studies using molecular techniques suggest bacterial communities in the placenta, amniotic fluid, and meconium from healthy pregnancies. These findings have led many scientists to challenge the "sterile womb paradigm" and propose that microbiome acquisition instead begins in utero, an idea that would fundamentally change our understanding of gut microbiota acquisition and its role in human development...
April 28, 2017: Microbiome
https://www.readbyqxmd.com/read/28448623/development-of-the-cutaneous-microbiome-in-the-preterm-infant-a-prospective-longitudinal-study
#11
Mohan Pammi, Jacqueline L O'Brien, Nadim J Ajami, Matthew C Wong, James Versalovic, Joseph F Petrosino
BACKGROUND: Neonatal sepsis in preterm infants is often due to organisms that colonize the skin including Staphylococcus spp. and Candida spp. Development and maturation of the skin microbiome in the neonatal period, especially in preterm infants, may be critical in preventing colonization with pathogens and subsequent progression to neonatal sepsis. Development of the skin microbiome in preterm infants or its determinants in the first 4 weeks of life has not been evaluated. METHODS: We evaluated the skin microbiome from three body sites, antecubital fossa, forehead and gluteal region, in a prospective cohort of 15 preterm (birth weight < 1500 g and < 32 weeks of gestation) and 15 term neonates...
2017: PloS One
https://www.readbyqxmd.com/read/28447406/the-prenatal-gut-microbiome-are-we-colonized-with-bacteria-in-utero
#12
REVIEW
R W Walker, J C Clemente, I Peter, R J F Loos
The colonization of the gut with microbes in early life is critical to the developing newborn immune system, metabolic function and potentially future health. Maternal microbes are transmitted to offspring during childbirth, representing a key step in the colonization of the infant gut. Studies of infant meconium suggest that bacteria are present in the foetal gut prior to birth, meaning that colonization could occur prenatally. Animal studies have shown that prenatal transmission of microbes to the foetus is possible, and physiological changes observed in pregnant mothers indicate that in utero transfer is likely in humans as well...
April 26, 2017: Pediatric Obesity
https://www.readbyqxmd.com/read/28410788/independence-of-gut-bacterial-content-and-neonatal-necrotizing-enterocolitis-severity
#13
Lauren K Barron, Barbara B Warner, Phillip I Tarr, William D Shannon, Elena Deych, Brad W Warner
INTRODUCTION: Necrotizing enterocolitis (NEC) is a common and devastating gastrointestinal disease of premature infants. NEC severity varies widely. Recent data have demonstrated a strong link between gut microbial dysbiosis and development of NEC. We tested the hypothesis that alterations in the gut microbiome at the time of diagnosis predict the severity of NEC. METHODS: We used prospectively collected fecal samples from very low birth weight infants who developed NEC, stratifying by NEC severity...
April 5, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28392148/molecular-insight-into-evolution-of-symbiosis-between-breast-fed-infants-and-a-member-of-the-human-gut-microbiome-bifidobacterium-longum
#14
Chihaya Yamada, Aina Gotoh, Mikiyasu Sakanaka, Mitchell Hattie, Keith A Stubbs, Ayako Katayama-Ikegami, Junko Hirose, Shin Kurihara, Takatoshi Arakawa, Motomitsu Kitaoka, Shujiro Okuda, Takane Katayama, Shinya Fushinobu
Breast-fed infants generally have a bifidobacteria-rich microbiota with recent studies indicating that human milk oligosaccharides (HMOs) selectively promote bifidobacterial growth. Bifidobacterium bifidum possesses a glycoside hydrolase family 20 lacto-N-biosidase for liberating lacto-N-biose I from lacto-N-tetraose, an abundant HMO unique to human milk, while Bifidobacterium longum subsp. longum has a non-classified enzyme (LnbX). Here, we determined the crystal structure of the catalytic domain of LnbX and provide evidence for creation of a novel glycoside hydrolase family, GH136...
April 20, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28390574/airway-microbial-dysbiosis-in-asthmatic-patients-a%C3%A2-target-for-prevention-and-treatment
#15
REVIEW
Kian Fan Chung
There has been long-standing interest in the role of bacterial communities in the complex and heterogeneous disease of asthma. With the advent of 16s rRNA sequencing replacing traditional culture methods, a strong association between the presence of bacterial communities with asthma has emerged. These microbiota can be modulated by various environmental factors, including diet, antibiotics, and early-life microbial exposures. Microbiota in the gut and lungs can influence both the inception and progress of asthma...
April 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28381231/exposure-to-household-furry-pets-influences-the-gut-microbiota-of-infant-at-3-4%C3%A2-months-following-various-birth-scenarios
#16
Hein M Tun, Theodore Konya, Tim K Takaro, Jeffrey R Brook, Radha Chari, Catherine J Field, David S Guttman, Allan B Becker, Piush J Mandhane, Stuart E Turvey, Padmaja Subbarao, Malcolm R Sears, James A Scott, Anita L Kozyrskyj
BACKGROUND: Early-life exposure to household pets has the capacity to reduce risk for overweight and allergic disease, especially following caesarean delivery. Since there is some evidence that pets also alter the gut microbial composition of infants, changes to the gut microbiome are putative pathways by which pet exposure can reduce these risks to health. To investigate the impact of pre- and postnatal pet exposure on infant gut microbiota following various birth scenarios, this study employed a large subsample of 746 infants from the Canadian Healthy Infant Longitudinal Development Study (CHILD) cohort, whose mothers were enrolled during pregnancy between 2009 and 2012...
April 6, 2017: Microbiome
https://www.readbyqxmd.com/read/28379925/medically-graded-honey-supplementation-formula-to-preterm-infants-as-a-prebiotic-a-randomized-controlled-trial
#17
Hany Aly, Reem N Said, Iman E Wali, Amany Elwakkad, Yssra Soliman, Alaa R Awad, Mahmoud A Shawky, Mohamed S Abu Alam, Mohamed A Mohamed
OBJECTIVES: The aim of the study was to assess the effect of medically graded enteral honey supplementation on the intestinal microbiota, immune response, and somatic growth of preterm infants. METHODS: A prospective randomized controlled trial was conducted on preterm infants with gestational age ≤34 weeks and postnatal age >3 days. After reaching 1/2 goal enteral feeds, medically graded bee honey was added to milk at a dose of 5, 10, 15, and 0 g/day for 2 weeks in groups A, B, C, and D, respectively...
June 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28379454/intervention-strategies-for-cesarean-section-induced-alterations-in-the-microbiota-gut-brain-axis
#18
Angela Moya-Pérez, Pauline Luczynski, Ingrid B Renes, Shugui Wang, Yuliya Borre, C Anthony Ryan, Jan Knol, Catherine Stanton, Timothy G Dinan, John F Cryan
Microbial colonization of the gastrointestinal tract is an essential process that modulates host physiology and immunity. Recently, researchers have begun to understand how and when these microorganisms colonize the gut and the early-life factors that impact their natural ecological establishment. The vertical transmission of maternal microbes to the offspring is a critical factor for host immune and metabolic development. Increasing evidence also points to a role in the wiring of the gut-brain axis. This process may be altered by various factors such as mode of delivery, gestational age at birth, the use of antibiotics in early life, infant feeding, and hygiene practices...
April 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28374667/effect-of-antibiotic-administration-during-infancy-on-growth-curves-through-young-adulthood-in-rhesus-macaques-macaca-mulatta
#19
Heather M Sidener, Byung Park, Lina Gao
Recent human studies indicate a possible correlation between the administration of antibiotics during early life and the risk oflater obesity, potentially due to antibiotic-induced alteration of the gastrointestinal microbiome. In humans, the risk of obesity increases with multiple courses of antibiotics and when fetuses or infants are treated with broad-spectrum and macrolide antibiotics.In addition, the obesity risk in humans seems higher for males than females. We used a retrospective, case-control, matched-pair study design to evaluate health records for 99 control-matched pairs of rhesus macaques (Macaca mulatta) from an outdoor breeding colony...
April 3, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28363939/nasopharyngeal-microbiome-in-premature-infants-and-stability-during-rhinovirus-infection
#20
Geovanny F Perez, Marcos Pérez-Losada, Natalia Isaza, Mary C Rose, Anamaris M Colberg-Poley, Gustavo Nino
RATIONALE: The nasopharyngeal (NP) microbiota of newborns and infants plays a key role in modulating airway inflammation and respiratory symptoms during viral infections. Premature (PM) birth modifies the early NP environment and is a major risk factor for severe viral respiratory infections. However, it is currently unknown if the NP microbiota of PM infants is altered relative to full-term (FT) individuals. OBJECTIVES: To characterize the NP microbiota differences in preterm and FT infants during rhinovirus (RV) infection...
March 31, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
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