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Naspolini NF, Meyer A, Moreira JC, Sun H, Froes-Asmus CIR, Dominguez-Bello MG. Environmental pollutant exposure associated with altered early-life gut microbiome: Results from a birth cohort study. ENVIRONMENTAL RESEARCH 2022; 205:112545. [PMID: 34896087 DOI: 10.1016/j.envres.2021.112545] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Emerging evidence shows that the gut microbiota interacts with environmental pollutants, but the effect of early exposure on the neonatal microbiome remains unknown. We investigated the association between maternal exposure to environmental pollutants and changes in early-life gut microbiome development. We surveyed 16S rRNA gene on meconium and fecal samples (at 1, 3, and 6 months) from the Brazilian birth cohort, and associated with levels of metals, perfluoroalkyl chemicals (PFAS), and pesticides in maternal and umbilical cord blood. The results indicate that the magnitude of the microbiome changes associated with increasing pollutant exposure was bigger in cesarean-section (CS) born and CS-born-preterm babies, in relation to vaginally (VG) delivered infants. Breastfeeding was associated with a stronger pollutant-associated effect on the infant feces, suggesting that the exposure source could be maternal milk. Differences in microbiome effects associated with maternal or cord blood pollutant concentrations suggest that fetal exposure time - intrauterine or perinatal - may matter. Finally, despite the high developmental microbiota variability, specific microbionts were consistently affected across all pollutants, with taxa clusters found in samples from infants exposed to the highest toxicant exposure. The results evidence that perinatal exposure to environmental pollutants is associated with alterations in gut microbiome development which may have health significance.
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Affiliation(s)
- Nathalia F Naspolini
- National School of Public Health Sergio Arouca, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.
| | - Armando Meyer
- Institute of Public Health Studies, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Josino C Moreira
- Center for the Studies on Workers' Health and Human Ecology, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Haipeng Sun
- Department of Biochemistry and Microbiology, Rutgers University, New Brunswick, NJ, USA
| | - Carmen I R Froes-Asmus
- School Maternity Hospital, School of Medicine, Federal University of Rio de Janeiro, Laranjeiras Street, 180, Rio de Janeiro, 22240-000, Brazil
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Gao X, Wang Z, Li X, Zhang X, Du S, Jia M, Hu D, Jia X, Cong B, Zhang Y, Ma C, Zhou S, Zhang J. A new Lactobacillus gasseri strain HMV18 inhibits the growth of pathogenic bacteria. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2021.11.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Cavalcanti MH, Roseira JPS, Leandro EDS, Arruda SF. Effect of a freeze-dried coffee solution in a high-fat diet-induced obesity model in rats: Impact on inflammatory response, lipid profile, and gut microbiota. PLoS One 2022; 17:e0262270. [PMID: 35081143 PMCID: PMC8791513 DOI: 10.1371/journal.pone.0262270] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 12/21/2021] [Indexed: 02/06/2023] Open
Abstract
Coffee beans contain high polyphenol content, which have the potential to modulate the intestinal microbiota, and possibly attenuate weight gain and the associated dyslipidemia. This study investigated the effect of freeze-dried coffee solution (FCS) consumption on physiological parameters, lipid profile, and microbiota of Wistar rats fed a high-fat diet (HF) or control diet (CT). FCS combined with a high-fat diet increased the fecal and cecal Bifidobacterium spp. population and decreased the cecal Escherichia coli population and intestinal Il1b mRNA level. Regardless of the diet type, FCS increased the serum high-density lipoprotein cholesterol (HDL-C); however, it did not affect body weight, food intake, low-density lipoprotein, triglycerides, fecal bile acids, and intestinal Il6 mRNA levels. The high-fat diet increased weight gain, hepatic cholesterol and triglycerides, fecal bile acids, and the fecal and cecal Lactobacillus spp. population, and reduced food intake, the fecal E. coli population, and intestinal Il6 mRNA level. The results suggest that FCS consumption exhibits positive health effects in rats fed a high-fat diet by increasing Bifidobacterium spp. population and HDL-C reverse cholesterol transport, and by reducing Il1b mRNA level. However, FCS administration at a dose of 0.39 g/100 g diet over an eight-week period was not effective in controlling food intake, and consequently, preventing weight gain in rats of high-fat diet-induced obesity model.
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Affiliation(s)
- Marilia Hermes Cavalcanti
- Postgraduate Program in Human Nutrition, Faculty of Health Sciences, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, Distrito Federal, Brazil
- * E-mail:
| | | | - Eliana dos Santos Leandro
- Postgraduate Program in Human Nutrition, Faculty of Health Sciences, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, Distrito Federal, Brazil
- Department of Nutrition, Faculty of Health Sciences, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Sandra Fernandes Arruda
- Postgraduate Program in Human Nutrition, Faculty of Health Sciences, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, Distrito Federal, Brazil
- Department of Nutrition, Faculty of Health Sciences, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, Distrito Federal, Brazil
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Chen SM, Lin CP, Jan MS. Early Gut Microbiota Changes in Preterm Infants with Bronchopulmonary Dysplasia: A Pilot Case-Control Study. Am J Perinatol 2021; 38:1142-1149. [PMID: 32446254 DOI: 10.1055/s-0040-1710554] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVE Bronchopulmonary dysplasia (BPD) is a complex chronic lung disease that primarily affects premature or critically ill infants. This pilot study investigated early changes in gut microbiota composition in BPD patients and explored the potential risk factors associated with these changes. STUDY DESIGN Preterm infants admitted to our neonatal intensive care unit with a gestational age of 26 to 32 weeks were prospectively surveyed and eligible for stool collection on days 7 and 28 of postnatal age between February 2016 and June 2017. A 16S rRNA sequencing approach was applied to compare the gut microbiota composition between the BPD group and controls. Multiple linear regression analysis was used to identify the predictor variables. RESULTS Eight subjects in the BPD group and 10 subjects in the preterm group were analyzed during the observation period. Actinobacteria, Proteobacteria, Bacteroidetes, and Firmicutes were the four dominant bacteria phyla of intestinal microflora. A significantly lower diversity of gut microbiota was observed in the BPD group compared with the preterm group on day 28 (number of observed operational taxonomic units, p = 0.034; abundance-based coverage estimator, p = 0.022; Shannon index, p = 0.028). Multiple linear regression analysis revealed that high Neonatal Therapeutic Intervention Scoring System score (≧19) at 24 hours was statistically significant in predicting the proportion of aerobic with facultative anaerobic bacteria on day 28 (p = 0.002). CONCLUSION Infants with BPD are prone to develop gut dysbiosis in early life. A higher severity of illness and treatment intensity may indicate a higher risk of disrupting an anaerobic environment in the gut during the first month of life. KEY POINTS · BPD patients are prone to develop gut dysbiosis.. · Lower diversity of gut microbiota.. · Higher risk of disrupting anaerobic environment..
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Affiliation(s)
- Shan-Ming Chen
- Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan.,Department of Pediatrics, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Ching-Pin Lin
- Division of Hepatology and Gastroenterology, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan.,Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan
| | - Ming-Shiou Jan
- Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan.,Immunology Research Center, Chung Shan Medical University, Taichung, Taiwan.,Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Chung Shan Medical University, Taichung, Taiwan
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Tonon KM, Morais TB, Taddei CR, Araújo-Filho HB, Abrão ACFV, Miranda A, de Morais MB. Gut microbiota comparison of vaginally and cesarean born infants exclusively breastfed by mothers secreting α1-2 fucosylated oligosaccharides in breast milk. PLoS One 2021; 16:e0246839. [PMID: 33556125 PMCID: PMC7870049 DOI: 10.1371/journal.pone.0246839] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 01/26/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Exclusive breastfeeding promotes beneficial modifications on the microbiota of cesarean born infants, but little is known about the role of specific breast milk components in this modulation. Women with an active FUT2 gene (called secretors) secrete α1-2 fucosylated human milk oligosaccharides (HMOs), which promote Bifidobacterium in the infant's gut and may modulate the microbiota of cesarean born infants. OBJECTIVE To compare the microbiota composition of cesarean and vaginally born infants breastfed by secretor mothers. METHODS Maternal secretor status was determined by the occurrence of 4 different α1-2 fucosylated HMOs in breast milk by LC-MS. The fecal microbiota composition from cesarean and vaginally born infants was analyzed by 16S rRNA gene sequencing and qPCR, stratified by the maternal secretor status, and compared. RESULTS Alpha and beta diversity were not significantly different in cesarean born, secretor-fed infants (CSe+) compared to vaginally born, secretor-fed infants (VSe+). There were no significant differences in the fecal relative abundance of Bifidobacterium between CSe+ and VSe+ infants, but the prevalence of the species B. longum was lower in CSe+. The fecal relative abundance of Bacteroides was also lower, while Akkermansia and Kluyvera were higher in CSe+ infants. CONCLUSION Cesarean and vaginally born infants fed with breast milk containing the α1-2 fucosylated HMOs fraction present similar amounts of Bifidobacterium in the feces, but differences are observed in other members of the microbiota.
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Affiliation(s)
- Karina M. Tonon
- Nutrition Postgraduate Program, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Tania B. Morais
- Food Quality Control Laboratory, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Carla R. Taddei
- Department of Clinical and Toxicological Analysis, Universidade de São Paulo, São Paulo, Brazil
- School of Arts, Sciences and Humanities, Universidade de São Paulo, São Paulo, Brazil
| | | | - Ana Cristina F. V. Abrão
- Breastfeeding Incentive and Support Center, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Antonio Miranda
- Department of Biophysics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Mauro B. de Morais
- Division of Pediatric Gastroenterology, Universidade Federal de São Paulo, São Paulo, Brazil
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Quin C, Gibson DL. Human behavior, not race or geography, is the strongest predictor of microbial succession in the gut bacteriome of infants. Gut Microbes 2020; 11:1143-1171. [PMID: 32249675 PMCID: PMC7524360 DOI: 10.1080/19490976.2020.1736973] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Colonization of the gastrointestinal tract with microorganisms during infancy represents a critical control point for shaping life-long immune-mediated disease susceptibility. Abnormal colonization or an imbalance of microbes, termed dysbiosis, is implicated in several diseases. Consequently, recent research has aimed at understanding ways to manipulate a dysbiotic microbiome during infancy to resemble a normal, healthy microbiome. However, one of the fundamental issues in microbiome research is characterizing what a "normal" infant microbiome is based on geography, ethnicity and cultural variations. This review provides a comprehensive account of what is currently known about the infant microbiome from a global context. In general, this review shows that the influence of cultural variations in feeding practices, delivery modes and hygiene are the biggest contributors to microbial variability. Despite geography or race, all humans have similar microbial succession during infancy.
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Affiliation(s)
- Candice Quin
- Department of Biology, University of British Columbia, Kelowna, Canada
| | - Deanna L. Gibson
- Department of Biology, University of British Columbia, Kelowna, Canada,Department of Medicine, University of British Columbia, Kelowna, Canada,CONTACT Deanna L. Gibson Department of Biology, University of British Columbia, Okanagan Campus, ASC 386, 3187 University Way, Kelowna, BCV1V 1V7, Canada
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Padilha M, Iaucci J, Cabral V, Diniz E, Taddei C, Saad S. Maternal antibiotic prophylaxis affects Bifidobacterium spp. counts in the human milk, during the first week after delivery. Benef Microbes 2019; 10:155-163. [DOI: 10.3920/bm2018.0046] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Human milk is an important source of microorganisms for infant gut colonisation. Although the maternal antibiotic prophylaxis is an important strategy to prevent maternal/neonatal sepsis, it has to be investigated how it may affect the human milk microbiota, especially the genus Bifidobacterium, which has been associated to health benefits. Here, we investigated the impact of the maternal antibiotic prophylaxis on the human milk Bifidobacterium spp. and total bacteria counts, in the first week (short-term) and first month (medium-term) after delivery. Human milk samples were collected from 55 healthy lactating women recruited from the University Hospital of the University of São Paulo at days 7±3 and 30±4 after vaginal delivery. Twenty one volunteers had received maternal antibiotic prophylaxis (MAP group) and 34 had not received MAP (no-MAP group) during or after labour. Total DNA was isolated from milk samples, and the bacterial counts were estimated by quantitative PCR (qPCR). We found lower levels of Bifidobacterium in the MAP group in the first week after delivery (median = 2.1 vs 2.4 log of equivalent cells/ml of human milk, for MAP and no-MAP groups, respectively; P=0.01), although there were no statistical differences in total bacteria count. However, no differences were found in Bifidobacterium counts between the groups at day 30±4 (median = 2.5 vs 2.2 log of equivalent cells/ml of human milk, for MAP and no-MAP groups, respectively; P=0.50). Our results suggest that MAP has a significant impact on Bifidobacterium counts in human milk, reducing this population in the first week after delivery. However, throughout the first month after delivery, the Bifidobacterium counts tend to recover, reaching similar counts to those found in no-MAP group at day 30±4 after delivery.
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Affiliation(s)
- M. Padilha
- School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes 580, São Paulo, SP, 05508-000, Brazil
- Food Research Center (FoRC), University of São Paulo, R. do Lago 250, São Paulo, SP, 05508-000, Brazil
| | - J.M. Iaucci
- School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes 580, São Paulo, SP, 05508-000, Brazil
| | - V.P. Cabral
- School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes 580, São Paulo, SP, 05508-000, Brazil
- School of Public Health, University of São Paulo, Av. Dr. Arnaldo 715, São Paulo, SP, 03178-200, Brazil
| | - E.M.A. Diniz
- Medical School, University of São Paulo, Av. Dr. Arnaldo 455, São Paulo, SP, 01246-903, Brazil
| | - C.R. Taddei
- School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes 580, São Paulo, SP, 05508-000, Brazil
- School of Arts, Sciences and Humanities, University of São Paulo, Rua Arlindo Béttio 117, São Paulo, SP, 03828-000, Brazil
| | - S.M.I. Saad
- School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes 580, São Paulo, SP, 05508-000, Brazil
- Food Research Center (FoRC), University of São Paulo, R. do Lago 250, São Paulo, SP, 05508-000, Brazil
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Murphy R, Morgan X, Wang X, Wickens K, Purdie G, Fitzharris P, Otal A, Lawley B, Stanley T, Barthow C, Crane J, Mitchell E, Tannock G. Eczema-protective probiotic alters infant gut microbiome functional capacity but not composition: sub-sample analysis from a RCT. Benef Microbes 2019; 10:5-17. [DOI: 10.3920/bm2017.0191] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Probiotic Lactobacillus rhamnosus HN001 given in early life has been shown to reduce infant eczema risk, but its effect on gut microbiota development has not been quantitatively and functionally examined. The aim of this study was to investigate the impact of early life probiotic exposure on the composition and functional capacity of infant gut microbiota from birth to 2 years considering the effects of age, delivery mode, antibiotics, pets and eczema. We performed shotgun metagenomic sequencing analysis of 650 infant faecal samples, collected at birth, 3, 12, and 24 months, as part of a randomised, controlled, 3-arm trial assessing the effect of L. rhamnosus HN001, Bifidobacterium animalis subsp. lactis HN019 supplementation on eczema development in 474 infants. There was a 50% reduced eczema risk in the HN001 probiotic group compared to placebo. Both mothers (from 35 weeks gestation until 6 months post-partum if breastfeeding) and infants (from birth to 2 years) received either a placebo or one of two probiotics, L. rhamnosus HN001 (6×109 cfu), or B. animalis subsp. lactis HN019 (9×109 cfu). L. rhamnosus HN001 probiotic supplementation was associated with increased overall glycerol-3 phosphate transport capacity and enrichment of L. rhamnosus. There were no other significant changes in infant gut microbiota composition or diversity. Increased capacity to transport glycerol-3-phosphate was positively correlated with relative abundance of L. rhamnosus. Children who developed eczema had gut microbiota with increased capacity for glycosaminoglycan degradation and flagellum assembly but had no significant differences in microbiota composition or diversity. Early life HN001 probiotic use is associated with both increased L. rhamnosus and increased infant gut microbiota functional capacity to transport glycerol-3 phosphate. The mechanistic relationship of such functional alteration in gut microbiota with reduced eczema risk and long-term health merits further investigation.
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Affiliation(s)
- R. Murphy
- Faculty of Medical and Health Sciences, University of Auckland, Park Road, Grafton, 1142 Auckland, New Zealand
| | - X.C. Morgan
- Department of Microbiology and Immunology, University of Otago, 720 Cumberland St, Dunedin 9016 New Zealand
| | - X.Y. Wang
- Department of Microbiology and Immunology, University of Otago, 720 Cumberland St, Dunedin 9016 New Zealand
| | - K. Wickens
- Department of Medicine, University of Otago, P.O. Box 7343, Wellington South, 6021 Wellington, New Zealand
| | - G. Purdie
- Department of Medicine, University of Otago, P.O. Box 7343, Wellington South, 6021 Wellington, New Zealand
| | - P. Fitzharris
- Department of Immunology, Auckland City Hospital, 2 Park Road, Grafton, 1023 Auckland, New Zealand
| | - A. Otal
- Department of Microbiology and Immunology, University of Otago, 720 Cumberland St, Dunedin 9016 New Zealand
| | - B. Lawley
- Department of Microbiology and Immunology, University of Otago, 720 Cumberland St, Dunedin 9016 New Zealand
| | - T. Stanley
- Department of Medicine, University of Otago, P.O. Box 7343, Wellington South, 6021 Wellington, New Zealand
| | - C. Barthow
- Department of Medicine, University of Otago, P.O. Box 7343, Wellington South, 6021 Wellington, New Zealand
| | - J. Crane
- Department of Medicine, University of Otago, P.O. Box 7343, Wellington South, 6021 Wellington, New Zealand
| | - E.A. Mitchell
- Department of Paediatrics, University of Auckland, Auckland 1142, New Zealand
| | - G.W. Tannock
- Microbiome Otago, University of Otago, 720 Cumberland St., 9016 Dunedin, New Zealand
- Department of Microbiology and Immunology, University of Otago, 720 Cumberland St, Dunedin 9016 New Zealand
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Carvalho-Ramos II, Duarte RTD, Brandt KG, Martinez MB, Taddei CR. Breastfeeding increases microbial community resilience. J Pediatr (Rio J) 2018; 94:258-267. [PMID: 28886400 DOI: 10.1016/j.jped.2017.05.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 03/20/2017] [Accepted: 05/17/2017] [Indexed: 01/18/2023] Open
Abstract
OBJECTIVE Since the present group had already described the composition of the intestinal microbiota of Brazilian infants under low social economic level, the aim of the present study was to analyze the microbial community structure changes in this group of infants during their early life due to external factors. METHODS Fecal samples were collected from 11 infants monthly during the first year of life. The infants were followed regarding clinical and diet information and characterized according to breastfeeding practices. DNA was extracted from fecal samples of each child and subjected to Polymerase Chain Reaction - Denaturing Gradient Gel Electrophoresis. RESULTS The results revealed a pattern of similarity between the time points for those who were on exclusive breastfeeding or predominant breastfeeding. Although there were changes in intensity and fluctuation of some bands, the Denaturing Gradient Gel Electrophoresis patterns in the one-year microbial analysis were stable for breastfeeding children. There was uninterrupted ecological succession despite the influence of external factors, such as complementary feeding and antibiotic administration, suggesting microbiota resilience. This was not observed for those children who had mixed feeding and introduction of solid food before the 5th month of life. CONCLUSION These results suggested an intestinal microbiota pattern resilient to external forces, due to the probiotic and prebiotic effects of exclusive breastfeeding, reinforcing the importance of exclusive breastfeeding until the 6th month of life.
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Affiliation(s)
- Isabel I Carvalho-Ramos
- Universidade de São Paulo (USP), Faculdade de Ciências Farmacêuticas, Departamento de Análises Clínicas e Toxicológicas, São Paulo, SP, Brazil
| | - Rubens T D Duarte
- Universidade Federal de Santa Catarina (UFSC), Departamento de Microbiologia, Imunologia e Parasitologia, Florianópolis, SC, Brazil
| | - Katia G Brandt
- Universidade Federal de Pernambuco (UFPE), Programa de Pós Graduação em Saúde da Criança e do Adolescente, Recife, PE, Brazil
| | - Marina B Martinez
- Universidade de São Paulo (USP), Faculdade de Ciências Farmacêuticas, Departamento de Análises Clínicas e Toxicológicas, São Paulo, SP, Brazil
| | - Carla R Taddei
- Universidade de São Paulo (USP), Faculdade de Ciências Farmacêuticas, Departamento de Análises Clínicas e Toxicológicas, São Paulo, SP, Brazil; Universidade de São Paulo (USP), Escola de Artes, Ciências e Humanidades, São Paulo, SP, Brazil.
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10
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Breastfeeding increases microbial community resilience. JORNAL DE PEDIATRIA (VERSÃO EM PORTUGUÊS) 2018. [DOI: 10.1016/j.jpedp.2017.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Live Faecalibacterium prausnitzii Does Not Enhance Epithelial Barrier Integrity in an Apical Anaerobic Co-Culture Model of the Large Intestine. Nutrients 2017; 9:nu9121349. [PMID: 29231875 PMCID: PMC5748799 DOI: 10.3390/nu9121349] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/29/2017] [Accepted: 12/08/2017] [Indexed: 12/15/2022] Open
Abstract
Appropriate intestinal barrier maturation during infancy largely depends on colonization with commensal bacteria. Faecalibacterium prausnitzii is an abundant obligate anaerobe that colonizes during weaning and is thought to maintain colonic health throughout life. We previously showed that F. prausnitzii induced Toll-like receptor 2 (TLR2) activation, which is linked to enhanced tight junction formation. Therefore, we hypothesized that F. prausnitzii enhances barrier integrity, an important factor in appropriate intestinal barrier maturation. In order to test metabolically active bacteria, we used a novel apical anaerobic co-culture system that allows the survival of both obligate anaerobic bacteria and oxygen-requiring intestinal epithelial cells (Caco-2). The first aim was to optimize the culture medium to enable growth and active metabolism of F. prausnitzii while maintaining the viability and barrier integrity, as measured by trans-epithelial electrical resistance (TEER), of the Caco-2 cells. This was achieved by supplementing the apical cell culture medium with bacterial culture medium. The second aim was to test the effect of F. prausnitzii on TEER across Caco-2 cell layers. Live F. prausnitzii did not improve TEER, which indicates that its benefits are not via altering tight junction integrity. The optimization of the novel dual-environment co-culturing system performed in this research will enable the investigation of new probiotics originating from indigenous beneficial bacteria.
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Pham VT, Lacroix C, Braegger CP, Chassard C. Lactate-utilizing community is associated with gut microbiota dysbiosis in colicky infants. Sci Rep 2017; 7:11176. [PMID: 28894218 PMCID: PMC5593888 DOI: 10.1038/s41598-017-11509-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 08/25/2017] [Indexed: 12/12/2022] Open
Abstract
The aetiology of colic, a functional gastrointestinal disorder in infants, is not yet resolved. Different mechanisms have been suggested involving the gut microbiota and intermediate metabolites such as lactate. Lactate can be metabolized by lactate-utilizing bacteria (LUB) to form different end-products. Using a functional approach, we hypothesized that H2 production and accumulation by LUB is associated with the development of colic. The LUB communities in the feces of forty infants, including eight colicky infants, were characterized using a combination of culture- and molecular-based methods, and metabolite concentrations were measured by HPLC. Interactions among LUB strains isolated from feces were investigated with pure and mixed cultures using anaerobic techniques. We emphasized high prevalence of crying, flatulence, colic and positive correlations thereof in the first 3 months of life. Crying infants showed significantly higher ratio of LUB non-sulfate-reducing bacteria (LUB non-SRB) (H2-producer), to LUB SRB (H2-utilizer) at 3 months. Colicky infants had significantly higher number of H2-producing Eubacterium hallii at 2 weeks compared to non-colicky infants. We revealed the function of Desulfovibrio piger and Eubacterium limosum to reduce H2 accumulation in co-cultures with H2-producing Veillonella ratti. Our data suggest that the balance between H2-producing and H2-utilizing LUB might contribute to colic symptoms.
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Affiliation(s)
- Van T Pham
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland.,Division of Gastroenterology and Nutrition, University Children's Hospital Zurich, Zurich, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland.
| | - Christian P Braegger
- Division of Gastroenterology and Nutrition, University Children's Hospital Zurich, Zurich, Switzerland
| | - Christophe Chassard
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland.,Université Clermont Auvergne, INRA, UMRF, F-1500, Aurillac, France
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