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Abstract
In this review, the authors outlined concepts and strategies to achieve immune tolerance through inducing hematopoietic chimerism after solid organ transplantation and introduced challenges and opportunities in harnessing two-way alloresponses to improve outcomes after intestinal transplantation (ITx). Next, the authors discussed the dynamics and phenotypes of peripheral blood and intestinal graft T-cell subset chimerism and their association with outcomes. The authors also summarized studies on other types of immune cells after ITx and their potential participation in chimerism-mediated tolerance. The authors further discussed strategies and future directions to promote chimerism-associated tolerance after ITx to overcome rejection and minimize immunosuppression.
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Affiliation(s)
- Kevin Crosby
- Columbia University Medical Center, New York, NY 10032, USA
| | - Katherine D Long
- Washington University School of Medicine in St. Louis, St Louis, MO 63110, USA
| | - Jianing Fu
- Department of Medicine, Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY 10032, USA.
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2
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Blum L, Vincent D, Boettcher M, Knopf J. Immunological aspects of necrotizing enterocolitis models: a review. Front Immunol 2024; 15:1434281. [PMID: 39104529 PMCID: PMC11298363 DOI: 10.3389/fimmu.2024.1434281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Accepted: 07/08/2024] [Indexed: 08/07/2024] Open
Abstract
Necrotizing enterocolitis (NEC) is one of the most devasting diseases affecting preterm neonates. However, despite a lot of research, NEC's pathogenesis remains unclear. It is known that the pathogenesis is a multifactorial process, including (1) a pathological microbiome with abnormal bacterial colonization, (2) an immature immune system, (3) enteral feeding, (3) an impairment of microcirculation, and (4) possibly ischemia-reperfusion damage to the intestine. Overall, the immaturity of the mucosal barrier and the increased expression of Toll-like receptor 4 (TLR4) within the intestinal epithelium result in an intestinal hyperinflammation reaction. Concurrently, a deficiency in counter-regulatory mediators can be seen. The sum of these processes can ultimately result in intestinal necrosis leading to very high mortality rates of the affected neonates. In the last decade no substantial advances in the treatment of NEC have been made. Thus, NEC animal models as well as in vitro models have been employed to better understand NEC's pathogenesis on a cellular and molecular level. This review will highlight the different models currently in use to study immunological aspects of NEC.
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Affiliation(s)
| | | | | | - Jasmin Knopf
- Department of Pediatric Surgery, University Medical Center Mannheim, University Heidelberg, Mannheim, Germany
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3
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Eckert JV, Moshal KS, Burge K, Wilson A, Chaaban H. Endogenous Hyaluronan Promotes Intestinal Homeostasis and Protects against Murine Necrotizing Enterocolitis. Cells 2024; 13:1179. [PMID: 39056761 PMCID: PMC11274784 DOI: 10.3390/cells13141179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 07/08/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024] Open
Abstract
Necrotizing enterocolitis (NEC) is a complex, multifactorial gastrointestinal disorder predominantly affecting preterm infants. The pathogenesis of this condition involves a complex interplay between intestinal barrier dysfunction, microbial dysbiosis, and an altered immune response. This study investigates the potential role of endogenous hyaluronan (HA) in both the early phases of intestinal development and in the context of NEC-like intestinal injury. We treated neonatal CD-1 mouse pups with PEP1, a peptide inhibiting HA receptor interactions, from postnatal days 8 to 12. We evaluated postnatal intestinal developmental indicators, such as villi length, crypt depth, epithelial cell proliferation, crypt fission, and differentiation of goblet and Paneth cells, in PEP1-treated animals compared with those treated with scrambled peptide. PEP1 treatment significantly impaired intestinal development, as evidenced by reductions in villi length, crypt depth, and epithelial cell proliferation, along with a decrease in crypt fission activity. These deficits in PEP1-treated animals correlated with increased susceptibility to NEC-like injuries, including higher mortality rates, and worsened histological intestinal injury. These findings highlight the role of endogenous HA in supporting intestinal development and protecting against NEC.
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Affiliation(s)
| | | | | | | | - Hala Chaaban
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (J.V.E.); (K.S.M.); (K.B.); (A.W.)
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4
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Suek N, Young T, Fu J. Immune cell profiling in intestinal transplantation. Hum Immunol 2024; 85:110808. [PMID: 38762429 PMCID: PMC11283363 DOI: 10.1016/j.humimm.2024.110808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 04/08/2024] [Accepted: 04/25/2024] [Indexed: 05/20/2024]
Abstract
Since the first published case study of human intestinal transplantation in 1967, there have been significant studies of intestinal transplant immunology in both animal models and humans. An improved understanding of the profiles of different immune cell subsets is critical for understanding their contributions to graft outcomes. While different studies have focused on the contribution of one or a few subsets to intestinal transplant, no study has integrated these data for a comprehensive overview of immune dynamics after intestinal transplant. Here, we provide a systematic review of the literature on different immune subsets and discuss their roles in intestinal transplant outcomes on multiple levels, focusing on chimerism and graft immune reconstitution, clonal alloreactivity, and cell phenotype. In Sections 1, 2 and 3, we lay out a shared framework for understanding intestinal transplant, focusing on the mechanisms of rejection or tolerance in the context of mucosal immunology and illustrate the unique role of the bidirectional graft-versus-host (GvH) and host-versus-graft (HvG) alloresponse. In Sections 4, 5 and 6, we further expand upon these concepts as we discuss the contribution of different cell subsets to intestinal transplant. An improved understanding of intestinal transplantation immunology will bring us closer to maximizing the potential of this important treatment.
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Affiliation(s)
- Nathan Suek
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Tyla Young
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Jianing Fu
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA.
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5
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Fu J, Hsiao T, Waffarn E, Meng W, Long KD, Frangaj K, Jones R, Gorur A, Shtewe A, Li M, Muntnich CB, Rogers K, Jiao W, Velasco M, Matsumoto R, Kubota M, Wells S, Danzl N, Ravella S, Iuga A, Vasilescu ER, Griesemer A, Weiner J, Farber DL, Luning Prak ET, Martinez M, Kato T, Hershberg U, Sykes M. Dynamic establishment and maintenance of the human intestinal B cell population and repertoire following transplantation in a pediatric-dominated cohort. Front Immunol 2024; 15:1375486. [PMID: 39007142 PMCID: PMC11239347 DOI: 10.3389/fimmu.2024.1375486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 06/17/2024] [Indexed: 07/16/2024] Open
Abstract
Introduction It is unknown how intestinal B cell populations and B cell receptor (BCR) repertoires are established and maintained over time in humans. Following intestinal transplantation (ITx), surveillance ileal mucosal biopsies provide a unique opportunity to map the dynamic establishment of recipient gut lymphocyte populations in immunosuppressed conditions. Methods Using polychromatic flow cytometry that includes HLA allele group-specific antibodies distinguishing donor from recipient cells along with high throughput BCR sequencing, we tracked the establishment of recipient B cell populations and BCR repertoire in the allograft mucosa of ITx recipients. Results We confirm the early presence of naïve donor B cells in the circulation (donor age range: 1-14 years, median: 3 years) and, for the first time, document the establishment of recipient B cell populations, including B resident memory cells, in the intestinal allograft mucosa (recipient age range at the time of transplant: 1-44 years, median: 3 years). Recipient B cell repopulation of the allograft was most rapid in infant (<1 year old)-derived allografts and, unlike T cell repopulation, did not correlate with rejection rates. While recipient memory B cell populations were increased in graft mucosa compared to circulation, naïve recipient B cells remained detectable in the graft mucosa for years. Comparisons of peripheral and intra-mucosal B cell repertoires in the absence of rejection (recipient age range at the time of transplant: 1-9 years, median: 2 years) revealed increased BCR mutation rates and clonal expansion in graft mucosa compared to circulating B cells, but these parameters did not increase markedly after the first year post-transplant. Furthermore, clonal mixing between the allograft mucosa and the circulation was significantly greater in ITx recipients, even years after transplantation, than in deceased adult donors. In available pan-scope biopsies from pediatric recipients, we observed higher percentages of naïve recipient B cells in colon allograft compared to small bowel allograft and increased BCR overlap between native colon vs colon allograft compared to that between native colon vs ileum allograft in most cases, suggesting differential clonal distribution in large intestine vs small intestine. Discussion Collectively, our data demonstrate intestinal mucosal B cell repertoire establishment from a circulating pool, a process that continues for years without evidence of stabilization of the mucosal B cell repertoire in pediatric ITx patients.
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Affiliation(s)
- Jianing Fu
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
| | - Thomas Hsiao
- Department of Human Biology, University of Haifa, Haifa, Israel
| | - Elizabeth Waffarn
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
| | - Wenzhao Meng
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Katherine D. Long
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
| | - Kristjana Frangaj
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
| | - Rebecca Jones
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
| | - Alaka Gorur
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
| | - Areen Shtewe
- Department of Human Biology, University of Haifa, Haifa, Israel
| | - Muyang Li
- Department of Pathology, Columbia University, New York, NY, United States
| | - Constanza Bay Muntnich
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
| | - Kortney Rogers
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
| | - Wenyu Jiao
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
| | - Monica Velasco
- Department of Pediatrics, Columbia University, New York, NY, United States
| | - Rei Matsumoto
- Department of Microbiology and Immunology, Columbia University, New York, NY, United States
| | - Masaru Kubota
- Department of Microbiology and Immunology, Columbia University, New York, NY, United States
| | - Steven Wells
- Department of Microbiology and Immunology, Columbia University, New York, NY, United States
| | - Nichole Danzl
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
| | - Shilpa Ravella
- Division of Digestive and Liver Diseases, Department of Medicine, Columbia University, New York, NY, United States
| | - Alina Iuga
- Department of Pathology, Columbia University, New York, NY, United States
| | | | - Adam Griesemer
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
- Department of Surgery, Columbia University, New York, NY, United States
| | - Joshua Weiner
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
- Department of Surgery, Columbia University, New York, NY, United States
| | - Donna L. Farber
- Department of Microbiology and Immunology, Columbia University, New York, NY, United States
- Department of Surgery, Columbia University, New York, NY, United States
| | - Eline T. Luning Prak
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Mercedes Martinez
- Department of Pediatrics, Columbia University, New York, NY, United States
| | - Tomoaki Kato
- Department of Surgery, Columbia University, New York, NY, United States
| | - Uri Hershberg
- Department of Human Biology, University of Haifa, Haifa, Israel
| | - Megan Sykes
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, United States
- Department of Microbiology and Immunology, Columbia University, New York, NY, United States
- Department of Surgery, Columbia University, New York, NY, United States
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6
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Lassoued N, Yero A, Jenabian MA, Soret R, Pilon N. Efficient enzyme-free method to assess the development and maturation of the innate and adaptive immune systems in the mouse colon. Sci Rep 2024; 14:11063. [PMID: 38744932 PMCID: PMC11094196 DOI: 10.1038/s41598-024-61834-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/10/2024] [Indexed: 05/16/2024] Open
Abstract
Researchers who aim to globally analyze the gastrointestinal immune system via flow cytometry have many protocol options to choose from, with specifics generally tied to gut wall layers of interest. To get a clearer idea of the approach we should use on full-thickness colon samples from mice, we first undertook a systematic comparison of three tissue dissociation techniques: two based on enzymatic cocktails and the other one based on manual crushing. Using flow cytometry panels of general markers of lymphoid and myeloid cells, we found that the presence of cell-surface markers and relative cell population frequencies were more stable with the mechanical method. Both enzymatic approaches were associated with a marked decrease of several cell-surface markers. Using mechanical dissociation, we then developed two minimally overlapping panels, consisting of a total of 26 antibodies, for serial profiling of lymphoid and myeloid lineages from the mouse colon in greater detail. Here, we highlight how we accurately delineate these populations by manual gating, as well as the reproducibility of our panels on mouse spleen and whole blood. As a proof-of-principle of the usefulness of our general approach, we also report segment- and life stage-specific patterns of immune cell profiles in the colon. Overall, our data indicate that mechanical dissociation is more suitable and efficient than enzymatic methods for recovering immune cells from all colon layers at once. Additionally, our panels will provide researchers with a relatively simple tool for detailed immune cell profiling in the murine gastrointestinal tract, regardless of life stage or experimental conditions.
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Affiliation(s)
- Nejia Lassoued
- Molecular Genetics of Development Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada
| | - Alexis Yero
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada
- Human Immuno-Virology Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada
| | - Mohammad-Ali Jenabian
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada
- Human Immuno-Virology Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada
| | - Rodolphe Soret
- Molecular Genetics of Development Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada.
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada.
| | - Nicolas Pilon
- Molecular Genetics of Development Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada.
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada.
- Department of Pediatrics, Université de Montréal, Montreal, QC, Canada.
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7
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He W, Ding H, Feng Y, Liu X, Fang X, Gao F, Shi B. Dietary-fat supplementation alleviates cold temperature-induced metabolic dysbiosis and barrier impairment by remodeling gut microbiota. Food Funct 2024; 15:1443-1459. [PMID: 38226701 DOI: 10.1039/d3fo04916g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
As important components of the mammalian diet and tissues, fats are involved in a variety of biological processes in addition to providing energy. In general, the increase in basal metabolism and health risks under cold temperature conditions causes the host to need more energy to maintain body temperature and normal biological processes. The intestine and its microbiota are key components in orchestrating host metabolic homeostasis and immunity, and respond rapidly to changing environmental conditions. However, the role of dietary-fat supplementation in regulating host homeostasis of metabolism and barrier functions through gut microbiota at cold temperatures is incompletely understood. Our results showed that dietary-fat supplementation alleviated the negative effects of cold temperatures on the alpha-diversity of both ileal and colonic microbiota. Cold temperatures altered the ileal and colonic microbiota of pigs, and the extent of changes was more pronounced in the colonic microbiota. Translocation of the gut microbiota was restored after supplementation with a high-fat diet. In addition, cold temperatures exacerbated ileal mucosal damage and inflammation, and disrupted barrier function, which may be associated with decreased concentrations of butyrate and isobutyrate. Cold temperature-induced metabolic dysbiosis was manifested by altered hormone levels and upregulation of expression of multiple metabolites involved in metabolism (lipids, amino acids and minerals) and the immune response. Supplementation with a high-fat diet restored metabolic homeostasis and barrier function by improving gut-microbiota composition and increasing SCFAs concentrations in pigs. In conclusion, cold temperatures induced severe translocation of microbiota and barrier damage. These actions increased the risk of metabolic imbalance. Dietary-fat supplementation alleviated the adverse effects of cold temperatures on host metabolism by remodeling the gut microbiota.
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Affiliation(s)
- Wei He
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China.
| | - Hongwei Ding
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China.
| | - Ye Feng
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China.
| | - Xinyu Liu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China.
| | - Xiuyu Fang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China.
| | - Feng Gao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China.
| | - Baoming Shi
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China.
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8
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Fu J, Hsiao T, Waffarn E, Meng W, Long KD, Frangaj K, Jones R, Gorur A, Shtewe A, Li M, Muntnich CB, Rogers K, Jiao W, Velasco M, Matsumoto R, Kubota M, Wells S, Danzl N, Ravella S, Iuga A, Vasilescu ER, Griesemer A, Weiner J, Farber DL, Luning Prak ET, Martinez M, Kato T, Hershberg U, Sykes M. Dynamic establishment and maintenance of the human intestinal B cell population and repertoire following transplantation. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.11.15.23298517. [PMID: 38014202 PMCID: PMC10680888 DOI: 10.1101/2023.11.15.23298517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
It is unknown how intestinal B cell populations and B cell receptor (BCR) repertoires are established and maintained over time in humans. Following intestinal transplantation (ITx), surveillance ileal mucosal biopsies provide a unique opportunity to map the dynamic establishment of gut lymphocyte populations. Using polychromatic flow cytometry that includes HLA allele group-specific mAbs distinguishing donor from recipient cells along with high throughput BCR sequencing, we tracked the establishment of recipient B cell populations and BCR repertoire in the allograft mucosa of ITx recipients. We confirm the early presence of naïve donor B cells in the circulation and, for the first time, document the establishment of recipient B cell populations, including B resident memory cells, in the intestinal allograft mucosa. Recipient B cell repopulation of the allograft was most rapid in infant (<1 year old)-derived allografts and, unlike T cell repopulation, did not correlate with rejection rates. While recipient memory B cell populations were increased in graft mucosa compared to circulation, naïve recipient B cells remained detectable in the graft mucosa for years. Comparisons of peripheral and intra-mucosal B cell repertoires in the absence of rejection revealed increased BCR mutation rates and clonal expansion in graft mucosa compared to circulating B cells, but these parameters did not increase markedly after the first year post-transplant. Furthermore, clonal mixing between the allograft mucosa and the circulation was significantly greater in ITx recipients, even years after transplantation, than in healthy control adults. Collectively, our data demonstrate intestinal mucosal B cell repertoire establishment from a circulating pool, a process that continues for years without evidence of establishment of a stable mucosal B cell repertoire.
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Affiliation(s)
- Jianing Fu
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
| | - Thomas Hsiao
- Department of Human Biology, University of Haifa, Haifa, Israel
| | - Elizabeth Waffarn
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
| | - Wenzhao Meng
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Katherine D Long
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
| | - Kristjana Frangaj
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
| | - Rebecca Jones
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
| | - Alaka Gorur
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
| | - Areen Shtewe
- Department of Human Biology, University of Haifa, Haifa, Israel
| | - Muyang Li
- Department of Pathology, Columbia University, New York, NY, USA
| | - Constanza Bay Muntnich
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
| | - Kortney Rogers
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
| | - Wenyu Jiao
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
| | - Monica Velasco
- Department of Pediatrics, Columbia University, New York, NY, USA
| | - Rei Matsumoto
- Department of Microbiology and Immunology, Columbia University, New York, NY, USA
| | - Masaru Kubota
- Department of Microbiology and Immunology, Columbia University, New York, NY, USA
| | - Steven Wells
- Department of Microbiology and Immunology, Columbia University, New York, NY, USA
| | - Nichole Danzl
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
| | - Shilpa Ravella
- Division of Digestive and Liver Diseases, Department of Medicine, Columbia University, New York, NY, USA
| | - Alina Iuga
- Department of Pathology, Columbia University, New York, NY, USA
| | | | - Adam Griesemer
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
- Department of Surgery, Columbia University, New York, NY, USA
| | - Joshua Weiner
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
- Department of Surgery, Columbia University, New York, NY, USA
| | - Donna L Farber
- Department of Microbiology and Immunology, Columbia University, New York, NY, USA
- Department of Surgery, Columbia University, New York, NY, USA
| | - Eline T Luning Prak
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | | | - Tomoaki Kato
- Department of Surgery, Columbia University, New York, NY, USA
| | - Uri Hershberg
- Department of Human Biology, University of Haifa, Haifa, Israel
| | - Megan Sykes
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA
- Department of Microbiology and Immunology, Columbia University, New York, NY, USA
- Department of Surgery, Columbia University, New York, NY, USA
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9
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Mepham J, Nelles-McGee T, Andrews K, Gonzalez A. Exploring the effect of prenatal maternal stress on the microbiomes of mothers and infants: A systematic review. Dev Psychobiol 2023; 65:e22424. [PMID: 37860905 DOI: 10.1002/dev.22424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 07/28/2023] [Accepted: 08/16/2023] [Indexed: 10/21/2023]
Abstract
Prenatal maternal stress (PNMS)-characterized by exposure to stress, anxiety, depression, or intimate partner violence-has been linked to biological alterations in infants, including disruptions to their intestinal microbiota, which have long-term implications for children's developmental outcomes. Significant research has been done examining the effects of PNMS on the microbiome in animals, but less is known about these effects in human research. The current systematic review aimed to synthesize current findings on the association between PNMS and mother and infant microbiomes. Medline, Embase, PsycInfo, Web of Science, and Eric databases were searched through to February 2022. A total of eight studies (n = 2219 infants, 2202 mothers) were included in the qualitative synthesis. Findings provided promising evidence of the role that PNMS plays in altering the microbial composition, diversity, and gut immunity in mothers and infants. Notably, majority of included studies found that higher PNMS was linked to increases in genera from the phylum Proteobacteria. The factors influencing these effects are explored including nutrition, birth mode, and parenting behaviors. Potential interventions to mitigate the adverse effects of PNMS are discussed, along with recommendations for future studies with longitudinal designs to better understand the appropriate type and timing of interventions needed to promote "healthy" maternal and infant microbial functioning.
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Affiliation(s)
- Jennifer Mepham
- Neuroscience Graduate Program, McMaster University, Hamilton, Ontario, Canada
| | - Taylor Nelles-McGee
- Neuroscience Graduate Program, McMaster University, Hamilton, Ontario, Canada
| | - Krysta Andrews
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
- Offord Centre for Child Studies, McMaster University, Hamilton, Ontario, Canada
| | - Andrea Gonzalez
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
- Offord Centre for Child Studies, McMaster University, Hamilton, Ontario, Canada
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10
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Yang S, Wei X, Zhong Y, Guo C, Liu X, Wang Z, Tu Y. Programmed death of intestinal epithelial cells in neonatal necrotizing enterocolitis: a mini-review. Front Pediatr 2023; 11:1199878. [PMID: 37342533 PMCID: PMC10277470 DOI: 10.3389/fped.2023.1199878] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/23/2023] [Indexed: 06/23/2023] Open
Abstract
Necrotizing enterocolitis (NEC) is one of the most fatal diseases in premature infants. Damage to the intestinal epithelial barrier (IEB) is an important event in the development of intestinal inflammation and the evolution of NEC. The intestinal epithelial monolayer formed by the tight arrangement of intestinal epithelial cells (IECs) constitutes the functional IEB between the organism and the extra-intestinal environment. Programmed death and regenerative repair of IECs are important physiological processes to maintain the integrity of IEB function in response to microbial invasion. However, excessive programmed death of IECs leads to increased intestinal permeability and IEB dysfunction. Therefore, one of the most fundamental questions in the field of NEC research is to reveal the pathological death process of IECs, which is essential to clarify the pathogenesis of NEC. This review focuses on the currently known death modes of IECs in NEC mainly including apoptosis, necroptosis, pyroptosis, ferroptosis, and abnormal autophagy. Furthermore, we elaborate on the prospect of targeting IECs death as a treatment for NEC based on exciting animal and clinical studies.
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Affiliation(s)
- Shuo Yang
- Department of Pharmacy, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
- Department of Critical Care Medicine, School of Anesthesiology, Naval Medical University, Shanghai, China
| | - Xin Wei
- Department of Clinical Pharmacy, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yuting Zhong
- Department of Critical Care Medicine, School of Anesthesiology, Naval Medical University, Shanghai, China
| | - Conglu Guo
- Department of Critical Care Medicine, School of Anesthesiology, Naval Medical University, Shanghai, China
| | - Xinzhu Liu
- Department of Clinical Pharmacy, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhibin Wang
- Department of Pharmacy, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
- Department of Critical Care Medicine, School of Anesthesiology, Naval Medical University, Shanghai, China
| | - Ye Tu
- Department of Pharmacy, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
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11
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Kondaveeti SN, Thekkekkara D, T LN, Manjula SN, Tausif YM, Babu A, Meheronnisha SK. A Deep Insight into the Correlation Between Gut Dysbiosis and Alzheimer’s Amyloidopathy. J Pharmacol Pharmacother 2023. [DOI: 10.1177/0976500x221150310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
Background Recent research has shown a strong correlation between gut dysbiosis and Alzheimer’s disease (AD). Purpose To investigate the relationship between gut dysbiosis, immune system activation, and the onset of AD and to examine current breakthroughs in microbiota-targeted AD therapeutics. Methods A review of scientific literature was conducted to assess the correlation between gut dysbiosis and AD and the various factors associated. Results Gut dysbiosis produces an increase in harmful substances, such as bacterial amyloids, which makes the gut barrier and blood-brain barrier more permeable. This leads to the stimulation of immunological responses and an increase in cytokines such as interleukin-1β (IL-1β). As a result, gut dysbiosis accelerates the progression of AD. Conclusion The review highlights the connection between gut dysbiosis and AD and the potential for microbiota-targeted therapies in AD treatment. Pictorial Abstract
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Affiliation(s)
| | - Dithu Thekkekkara
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, India
| | - Lakshmi Narayanan T
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, India
| | - S. N. Manjula
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, India
| | - Y Mohammed Tausif
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, India
| | - Amrita Babu
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, India
| | - SK Meheronnisha
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, India
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12
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Influence of Perinatal Factors on Blood Tryptase and Fecal Calprotectin Levels in Newborns. CHILDREN (BASEL, SWITZERLAND) 2023; 10:children10020345. [PMID: 36832475 PMCID: PMC9954950 DOI: 10.3390/children10020345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/31/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
BACKGROUND Blood tryptase and fecal calprotectin levels may serve as biomarkers of necrotizing enterocolitis. However, their interpretation may be hindered by the little-known effects of perinatal factors. The aim of this study was to compare the tryptase and calprotectin levels in newborns according to their term, trophicity, and sex. METHOD One hundred and fifty-seven premature newborns and 157 full-term newborns were included. Blood tryptase and fecal calprotectin were assayed. RESULTS Blood tryptase levels were higher in premature than in full-term newborns (6.4 vs. 5.2 µg/L; p < 0.001). In situations of antenatal use of corticosteroids (p = 0.007) and non-exclusive use of human milk (p = 0.02), these levels were also higher. However, in multiple linear regression analyses, only prematurity significantly influenced tryptase levels. Fecal calprotectin levels were extremely wide-ranging and were much higher in female than in male newborns (300.5 vs. 110.5 µg/g; p < 0.001). CONCLUSIONS The differences in tryptase levels according to term could be linked to early aggression of the still-immature digestive wall in premature newborns, in particular, by enteral feeding started early. The unexpected influence of sex on fecal calprotectin levels remains unexplained.
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13
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Nuzhat S, Hasan SMT, Palit P, Islam MR, Mahfuz M, Islam MM, Alam MA, Flannery RL, Kyle DJ, Sarker SA, Ahmed T. Effects of probiotic and synbiotic supplementation on ponderal and linear growth in severely malnourished young infants in a randomized clinical trial. Sci Rep 2023; 13:1845. [PMID: 36725893 PMCID: PMC9890433 DOI: 10.1038/s41598-023-29095-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 01/30/2023] [Indexed: 02/03/2023] Open
Abstract
Severe acute malnutrition (SAM) is a major global public health problem. We aimed to assess the effects of probiotic and synbiotic supplementation on rate of weight gain and change in length in young SAM infants. This study was substudy of a single-blind randomized clinical trial (NCT0366657). During nutritional rehabilitation, 67 <6 months old SAM infants were enrolled and randomized to receive either probiotic (Bifidobacterium. infantis EVC001) or synbiotic (B. infantis EVC001 + Lacto-N-neotetraose [LNnT]) or placebo (Lactose) for four weeks and were followed for four more weeks after supplementation. In multivariable linear regression model, the mean rate of weight gain in the probiotic arm compared to placebo was higher by 2.03 unit (P < 0.001), and 1.13 unit (P = 0.030) in the synbiotic arm. In linear mixed-effects model, mean WAZ was higher by 0.57 unit (P = 0.018) in probiotic arm compared to placebo. Although not statistically significant, delta length for age z score (LAZ) trended to be higher among children in probiotc (β = 0.25) and synbiotic (β = 0.26) arms compared to placebo in multivariable linear regression model. Our study describes that young SAM infants had a higher rate of weight gain when supplemented with probiotic alone, compared to their counterparts with either synbiotic or placebo.
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Affiliation(s)
- Sharika Nuzhat
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - S M Tafsir Hasan
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh.
| | - Parag Palit
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Md Ridwan Islam
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Mustafa Mahfuz
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - M Munirul Islam
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Md Ashraful Alam
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | | | | | - Shafiqul A Sarker
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Tahmeed Ahmed
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
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14
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Chen YY, Tun HM, Field CJ, Mandhane PJ, Moraes TJ, Simons E, Turvey SE, Subbarao P, Scott JA, Kozyrskyj AL. Impact of Cesarean Delivery and Breastfeeding on Secretory Immunoglobulin A in the Infant Gut Is Mediated by Gut Microbiota and Metabolites. Metabolites 2023; 13:metabo13020148. [PMID: 36837767 PMCID: PMC9959734 DOI: 10.3390/metabo13020148] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/19/2022] [Accepted: 01/13/2023] [Indexed: 01/20/2023] Open
Abstract
How gut immunity in early life is shaped by birth in relation to delivery mode, intrapartum antibiotic prophylaxis (IAP) and labor remains undetermined. We aimed to address this gap with a study of secretory Immunoglobulin A (SIgA) in the infant gut that also tested SIgA-stimulating pathways mediated by gut microbiota and metabolites. Among 1017 Canadian full-term infants, gut microbiota of fecal samples collected at 3 and 12 months were profiled using 16S rRNA sequencing; C. difficile was quantified by qPCR; fecal metabolites and SIgA levels were measured by NMR and SIgA enzyme-linked immunosorbent assay, respectively. We assessed the putative causal relationships from birth events to gut microbiota and metabolites, and ultimately to SIgA, in statistical sequential mediation models, adjusted for maternal gravida status in 551 infants. As birth mode influences the ability to breastfeed, the statistical mediating role of breastfeeding status and milk metabolites was also evaluated. Relative to vaginal birth without maternal IAP, cesarean section (CS) after labor was associated with reduced infant gut SIgA levels at 3 months (6.27 vs. 4.85 mg/g feces, p < 0.05); this association was sequentially mediated through gut microbiota and metabolites of microbial or milk origin. Mediating gut microbiota included Enterobacteriaceae, C. difficile, and Streptococcus. The milk or microbial metabolites in CS-SIgA mediating pathways were galactose, fucose, GABA, choline, lactate, pyruvate and 1,2-propanediol. This cohort study documented the impact of birth on infant gut mucosal SIgA. It is the first to characterize gut microbe-metabolite mediated pathways for early-life SIgA maturation, pathways that require experimental verification.
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Affiliation(s)
- Yuan Yao Chen
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Hein M. Tun
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 1C9, Canada
- The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China
| | - Catherine J. Field
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Piushkumar J. Mandhane
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Theo J. Moraes
- Department of Pediatrics and Physiology, Hospital for Sick Children, University of Toronto, Toronto, ON M5G 1X8, Canada
| | - Elinor Simons
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB R3A 1S1, Canada
| | - Stuart E. Turvey
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC V6H 0B3, Canada
| | - Padmaja Subbarao
- Department of Pediatrics and Physiology, Hospital for Sick Children, University of Toronto, Toronto, ON M5G 1X8, Canada
| | - James A. Scott
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON M5T 3M7, Canada
| | - Anita L. Kozyrskyj
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 1C9, Canada
- Correspondence: ; Tel.: +1-780-248-5508
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15
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Moving beyond descriptive studies: harnessing metabolomics to elucidate the molecular mechanisms underpinning host-microbiome phenotypes. Mucosal Immunol 2022; 15:1071-1084. [PMID: 35970917 DOI: 10.1038/s41385-022-00553-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/04/2022] [Accepted: 07/20/2022] [Indexed: 02/04/2023]
Abstract
Advances in technology and software have radically expanded the scope of metabolomics studies and allow us to monitor a broad transect of central carbon metabolism in routine studies. These increasingly sophisticated tools have shown that many human diseases are modulated by microbial metabolism. Despite this, it remains surprisingly difficult to move beyond these statistical associations and identify the specific molecular mechanisms that link dysbiosis to the progression of human disease. This difficulty stems from both the biological intricacies of host-microbiome dynamics as well as the analytical complexities inherent to microbiome metabolism research. The primary objective of this review is to examine the experimental and computational tools that can provide insights into the molecular mechanisms at work in host-microbiome interactions and to highlight the undeveloped frontiers that are currently holding back microbiome research from fully leveraging the benefits of modern metabolomics.
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16
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Connor RI, Brickley EB, Wieland-Alter WF, Ackerman ME, Weiner JA, Modlin JF, Bandyopadhyay AS, Wright PF. Mucosal immunity to poliovirus. Mucosal Immunol 2022; 15:1-9. [PMID: 34239028 PMCID: PMC8732262 DOI: 10.1038/s41385-021-00428-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 05/26/2021] [Accepted: 06/14/2021] [Indexed: 02/04/2023]
Abstract
A cornerstone of the global initiative to eradicate polio is the widespread use of live and inactivated poliovirus vaccines in extensive public health campaigns designed to prevent the development of paralytic disease and interrupt transmission of the virus. Central to these efforts is the goal of inducing mucosal immunity able to limit virus replication in the intestine. Recent clinical trials have evaluated new combined regimens of poliovirus vaccines, and demonstrated clear differences in their ability to restrict virus shedding in stool after oral challenge with live virus. Analyses of mucosal immunity accompanying these trials support a critical role for enteric neutralizing IgA in limiting the magnitude and duration of virus shedding. This review summarizes key findings in vaccine-induced intestinal immunity to poliovirus in infants, older children, and adults. The impact of immunization on development and maintenance of protective immunity to poliovirus and the implications for global eradication are discussed.
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Affiliation(s)
- Ruth I Connor
- Department of Pediatrics, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
- Department of Microbiology and Immunology, Geisel School of Medicine, Dartmouth College, Hanover, NH, USA
| | - Elizabeth B Brickley
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK
| | | | - Margaret E Ackerman
- Department of Microbiology and Immunology, Geisel School of Medicine, Dartmouth College, Hanover, NH, USA
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA
| | - Joshua A Weiner
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA
| | | | | | - Peter F Wright
- Department of Pediatrics, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA.
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17
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Human milk oligosaccharides 3′-sialyllactose and 6′-sialyllactose protect intestine against necrotizing enterocolitis damage induced by hypoxia. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104708] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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18
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Sampah MES, Hackam DJ. Prenatal Immunity and Influences on Necrotizing Enterocolitis and Associated Neonatal Disorders. Front Immunol 2021; 12:650709. [PMID: 33968047 PMCID: PMC8097145 DOI: 10.3389/fimmu.2021.650709] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 04/06/2021] [Indexed: 12/14/2022] Open
Abstract
Prior to birth, the neonate has limited exposure to pathogens. The transition from the intra-uterine to the postnatal environment initiates a series of complex interactions between the newborn host and a variety of potential pathogens that persist over the first few weeks of life. This transition is particularly complex in the case of the premature and very low birth weight infant, who may be susceptible to many disorders as a result of an immature and underdeveloped immune system. Chief amongst these disorders is necrotizing enterocolitis (NEC), an acute inflammatory disorder that leads to necrosis of the intestine, and which can affect multiple systems and have the potential to result in long term effects if the infant is to survive. Here, we examine what is known about the interplay of the immune system with the maternal uterine environment, microbes, nutritional and other factors in the pathogenesis of neonatal pathologies such as NEC, while also taking into consideration the effects on the long-term health of affected children.
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Affiliation(s)
| | - David J. Hackam
- Division of Pediatric Surgery, Department of Surgery, Johns Hopkins University School of Medicine , Baltimore, MD, United States
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19
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Yeruva L, Munblit D, Collado MC. Editorial: Impact of Early Life Nutrition on Immune System Development and Related Health Outcomes in Later Life. Front Immunol 2021; 12:668569. [PMID: 33841449 PMCID: PMC8027300 DOI: 10.3389/fimmu.2021.668569] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 03/11/2021] [Indexed: 12/15/2022] Open
Affiliation(s)
- Laxmi Yeruva
- Arkansas Children's Nutrition Center, Little Rock, AR, United States.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, United States.,Arkansas Children's Research Institute, Little Rock, AR, United States
| | - Daniel Munblit
- Department of Pediatrics and Pediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.,Inflammation, Repair and Development Section, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom.,Solov'ev Research and Clinical Center for Neuropsychiatry, Moscow, Russia
| | - Maria Carmen Collado
- Department of Biotechnology, Unit of Lactic Acid Bacteria and Probiotics, Institute of Agrochemistry and Food Technology, National Research Council (IATA-CSIC), Valencia, Spain
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20
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Kendall E, Millard A, Beaumont J. The "weanling's dilemma" revisited: Evolving bodies of evidence and the problem of infant paleodietary interpretation. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2021; 175 Suppl 72:57-78. [PMID: 33460467 DOI: 10.1002/ajpa.24207] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/23/2020] [Accepted: 12/06/2020] [Indexed: 01/02/2023]
Abstract
Breastfeeding is known to be a powerful mediator of maternal and childhood health, with impacts throughout the life course. Paleodietary studies of the past 30 years have accordingly taken an enduring interest in the health and diet of young children as a potential indicator of population fertility, subsistence, and mortality patterns. While progress has been made in recent decades toward acknowledging the agency of children, many paleodietary reconstructions have failed to incorporate developments in cognate disciplines revealing synergistic dynamics between maternal and offspring biology. Paleodietary interpretation has relied heavily on the "weanling's dilemma," in which infants are thought to face a bleak choice between loss of immunity or malnutrition. Using a review of immunological and epidemiological evidence for the dynamic and supportive role that breastfeeding plays throughout the complementary feeding period, this article offers context and nuance for understanding past feeding transitions. We suggest that future interpretative frameworks for infant paleodietary and bioarchaeological research should include a broad knowledge base that keeps pace with relevant developments outside of those disciplines.
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Affiliation(s)
- Ellen Kendall
- Department of Archaeology, Durham University, Durham, UK
| | - Andrew Millard
- Department of Archaeology, Durham University, Durham, UK
| | - Julia Beaumont
- School of Archaeological and Forensic Sciences, University of Bradford, Bradford, UK
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21
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Vu K, Lou W, Tun HM, Konya TB, Morales-Lizcano N, Chari RS, Field CJ, Guttman DS, Mandal R, Wishart DS, Azad MB, Becker AB, Mandhane PJ, Moraes TJ, Lefebvre DL, Sears MR, Turvey SE, Subbarao P, Scott JA, Kozyrskyj AL. From Birth to Overweight and Atopic Disease: Multiple and Common Pathways of the Infant Gut Microbiome. Gastroenterology 2021; 160:128-144.e10. [PMID: 32946900 DOI: 10.1053/j.gastro.2020.08.053] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 08/23/2020] [Accepted: 08/31/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Few studies, even those with cohort designs, test the mediating effects of infant gut microbes and metabolites on the onset of disease. We undertook such a study. METHODS Using structural equation modeling path analysis, we tested directional relationships between first pregnancy, birth mode, prolonged labor and breastfeeding; infant gut microbiota, metabolites, and IgA; and childhood body mass index and atopy in 1667 infants. RESULTS After both cesarean birth and prolonged labor with a first pregnancy, a higher Enterobacteriaceae/Bacteroidaceae ratio at 3 months was the dominant path to overweight; higher Enterobacteriaceae/Bacteroidaceae ratios and Clostridioides difficile colonization at 12 months were the main pathway to atopic sensitization. Depletion of Bifidobacterium after prolonged labor was a secondary pathway to overweight. Influenced by C difficile colonization at 3 months, metabolites propionate and formate were secondary pathways to child outcomes, with a key finding that formate was at the intersection of several paths. CONCLUSIONS Pathways from cesarean section and first pregnancy to child overweight and atopy share many common mediators of the infant gut microbiome, notably C difficile colonization.
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Affiliation(s)
- Khanh Vu
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Wendy Lou
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Hein M Tun
- School of Public Health, University of Hong Kong, Hong Kong
| | - Theodore B Konya
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | | | - Radha S Chari
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta, Canada
| | - Catherine J Field
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - David S Guttman
- Centre for the Analysis of Genome Evolution and Function, University of Toronto, Toronto, Ontario, Canada
| | - Rupasri Mandal
- The Metabolomics Innovation Centre, Edmonton, Alberta, Canada
| | - David S Wishart
- The Metabolomics Innovation Centre, Edmonton, Alberta, Canada
| | - Meghan B Azad
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Allan B Becker
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Piush J Mandhane
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Theo J Moraes
- Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Diana L Lefebvre
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Malcolm R Sears
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Stuart E Turvey
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Padmaja Subbarao
- Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
| | - James A Scott
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Anita L Kozyrskyj
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada; Department of Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta, Canada; School of Public Health, University of Alberta, Edmonton, Alberta, Canada.
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22
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Zhaxi Y, Meng X, Wang W, Wang L, He Z, Zhang X, Pu W. Duan-Nai-An, A Yeast Probiotic, Improves Intestinal Mucosa Integrity and Immune Function in Weaned Piglets. Sci Rep 2020; 10:4556. [PMID: 32165666 PMCID: PMC7067797 DOI: 10.1038/s41598-020-61279-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 02/20/2020] [Indexed: 12/01/2022] Open
Abstract
Post-weaning diarrhea commonly occurs in piglets and results in significant economic loss to swine producers. Non-antibiotic measures for managing post-weaning diarrhea are critically needed. Duan-Nai-An, a probiotic produced from the yeast fermentation of egg whites, was previously shown to optimize intestinal flora and reduce the incidence of clinical diarrhea in weaning piglets. To study the effects of Duan-Nai-An on mucosal integrity and immunity in pig intestine, we examined the microstructure and ultrastructure of the intestines of weaned pigs with or without Duan-Nai-An as a feed supplement. The piglets of the Duan-Nai-An-fed group developed intestines with intact columnar epithelia covered by tightly packed microvilli on the apical surface. However, piglets of the control group (no supplement) showed villous atrophy and thinning, microvillus slough, and in the severe cases, damage of intestinal epithelia and exposure of the underlying lamina propria. Moreover, piglets of the Duan-Nai-An-fed group showed apparent plasmocyte hyperplasia, increased lymphoid nodule numbers, well-developed Peyer's Patchs, and apparent germinal centers. The lymphoid tissues of the control group were far less developed, showing lymph node atrophy, lymphocyte reduction, degeneration, and necrosis. These results indicate that Duan-Nai-An improves the development of the intestinal structures and lymphoid tissues and promotes intestinal health in weaned piglets.
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Affiliation(s)
- Yingpai Zhaxi
- Key Laboratory of New Animal Drug Project, Gansu Province and Key Laboratory of Veterinary Pharmaceutics Discovery, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, 730050, China
- College of Life Sciences and Engineering, Northwest Minzu University, Lanzhou, 730030, China
| | - Xiaoqin Meng
- Lanzhou Center for Animal Disease Control and Prevention, Lanzhou, 730050, China
| | - Wenhui Wang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China
| | - Ling Wang
- Key Laboratory of New Animal Drug Project, Gansu Province and Key Laboratory of Veterinary Pharmaceutics Discovery, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, 730050, China
| | - Zhuolin He
- Key Laboratory of New Animal Drug Project, Gansu Province and Key Laboratory of Veterinary Pharmaceutics Discovery, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, 730050, China
| | - Xuejing Zhang
- Key Laboratory of New Animal Drug Project, Gansu Province and Key Laboratory of Veterinary Pharmaceutics Discovery, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, 730050, China
| | - Wanxia Pu
- Key Laboratory of New Animal Drug Project, Gansu Province and Key Laboratory of Veterinary Pharmaceutics Discovery, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, 730050, China.
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23
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Burge K, Bergner E, Gunasekaran A, Eckert J, Chaaban H. The Role of Glycosaminoglycans in Protection from Neonatal Necrotizing Enterocolitis: A Narrative Review. Nutrients 2020; 12:nu12020546. [PMID: 32093194 PMCID: PMC7071410 DOI: 10.3390/nu12020546] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/14/2020] [Accepted: 02/16/2020] [Indexed: 12/22/2022] Open
Abstract
Necrotizing enterocolitis, a potentially fatal intestinal inflammatory disorder affecting primarily premature infants, is a significant cause of morbidity and mortality in neonates. While the etiology of the disease is, as yet, unknown, a number of risk factors for the development of necrotizing enterocolitis have been identified. One such risk factor, formula feeding, has been shown to contribute to both increased incidence and severity of the disease. The protective influences afforded by breastfeeding are likely attributable to the unique composition of human milk, an extremely potent, biologically active fluid. This review brings together knowledge on the pathogenesis of necrotizing enterocolitis and current thinking on the instrumental role of one of the more prominent classes of bioactive components in human breast milk, glycosaminoglycans.
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MESH Headings
- Breast Feeding
- Enterocolitis, Necrotizing/etiology
- Enterocolitis, Necrotizing/pathology
- Enterocolitis, Necrotizing/prevention & control
- Female
- Glycosaminoglycans/pharmacology
- Humans
- Infant Formula/adverse effects
- Infant, Newborn
- Infant, Premature, Diseases/etiology
- Infant, Premature, Diseases/pathology
- Infant, Premature, Diseases/prevention & control
- Male
- Milk, Human/chemistry
- Protective Agents/pharmacology
- Risk Factors
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24
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Kang LJ, Vu KN, Koleva PT, Field CJ, Chow A, Azad MB, Becker AB, Mandhane PJ, Moraes TJ, Sears MR, Lefebvre DL, Turvey SE, Subbarao P, Lou WYW, Scott JA, Kozyrskyj AL. Maternal psychological distress before birth influences gut immunity in mid-infancy. Clin Exp Allergy 2020; 50:178-188. [PMID: 31845414 DOI: 10.1111/cea.13551] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 12/03/2019] [Accepted: 12/12/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Maternal pre-postnatal psychosocial distress increases the risk for childhood allergic disease. This may occur through a host immunity pathway that involves intestinal secretory immunoglobulin A (sIgA). Experimental animal models show changes in the gut microbiome and immunity of offspring when exposed to direct or prenatal maternal stress, but little is known in humans. OBJECTIVE We determined the association between maternal depression and stress symptom trajectories and infant fecal sIgA concentrations. METHODS 1043 term infants from the Canadian Healthy Infant Longitudinal Development (CHILD) birth cohort were studied. Trajectories of maternal perceived stress and depression were based on scored scales administered in pregnancy and postpartum. sIgA was quantified in infant stool (mean age 3.7 months) with Immundiagnostik ELISA. Linear regression and logistic regression were employed to test associations. RESULTS Very low fecal sIgA concentrations were more common in infants of mothers in the antepartum and persistent depression trajectories (6% and 2% of women, respectively). Independent of breastfeeding status at fecal sampling, infant antibiotic exposure or other covariates, the antepartum depressive symptom trajectory was associated with reduced mean infant sIgA concentrations (β=-0.07, P < .01) and a two fold risk for lowest quartile concentrations (OR, 1.86; 95% CI: 1.02, 3.40). This lowering of sIgA yielded a large effect size in older infants (4-8 months)-breastfed and not. No associations were seen with postpartum depressive symptoms (7% of women) or with any of the perceived stress trajectories. CONCLUSION AND CLINICAL RELEVANCE Despite improved mood postpartum and independent of breastfeeding status, mothers experiencing antepartum depressive symptoms delivered offspring who exhibited lower fecal sIgA concentrations especially in later infancy. The implications of lowered sIgA concentrations in infant stool are altered microbe-sIgA interactions, greater risk for C difficile colonization and atopic disease in later years.
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Affiliation(s)
- Liane J Kang
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Khanh N Vu
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Petya T Koleva
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Catherine J Field
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada
| | - Angela Chow
- Department of Applied Health Science, Indiana University, Bloomington, IN, USA
| | - Meghan B Azad
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB, Canada
| | - Allan B Becker
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB, Canada
| | | | - Theo J Moraes
- Department of Pediatrics, University of Toronto, Toronto, ON, Canada
| | - Malcolm R Sears
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Diana L Lefebvre
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Stuart E Turvey
- Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Padmaja Subbarao
- Department of Pediatrics, University of Toronto, Toronto, ON, Canada
| | - Wendy Y W Lou
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - James A Scott
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Anita L Kozyrskyj
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,School of Public Health, University of Alberta, Edmonton, AB, Canada
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25
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Grases-Pintó B, Abril-Gil M, Castell M, Rodríguez-Lagunas MJ, Burleigh S, Fåk Hållenius F, Prykhodko O, Pérez-Cano FJ, Franch À. Influence of Leptin and Adiponectin Supplementation on Intraepithelial Lymphocyte and Microbiota Composition in Suckling Rats. Front Immunol 2019; 10:2369. [PMID: 31708912 PMCID: PMC6795087 DOI: 10.3389/fimmu.2019.02369] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 09/20/2019] [Indexed: 12/19/2022] Open
Abstract
Dietary components in early life play a role in both microbiota and intestinal immune system maturation in mammalian species. Adipokines, as endogenously produced hormones from breast milk, may have an impact on this process. The aim of the present study was to establish the influence of leptin and adiponectin supplementation during suckling on the intraepithelial lymphocyte composition, intestinal barrier function, intestinal gene expression, and gut microbiota in rat. For this purpose, newborn Wistar rats were supplemented daily with leptin, adiponectin, or whey protein concentrate during the first 21 days of life. Lymphocyte composition was established by immunofluorescence staining and flow cytometry analysis; intestinal gene expression by real-time PCR and cecal microbiota were analyzed through 16S rRNA gene sequencing. Although leptin and adiponectin were able to increase the Tc TCRαβ+ and NKT cell proportion, they decreased the NK cell percentage in IEL. Moreover, adipokine supplementation differentially modified CD8+ IEL. While the supplementation of leptin increased the proportion of CD8αα+ IEL (associated to a more intestinal phenotype), adiponectin enhanced that of CD8αβ+ (related to a peripheral phenotype). Furthermore, both adipokines enhanced the gene expression of TNF-α, MUC-2, and MUC-3, and decreased that of FcRn. In addition, the adipokine supplementations decreased the abundance of the Proteobacteria phylum and the presence of Blautia. Moreover, leptin-supplemented animals had lower relative abundance of Sutterella and a higher proportion of Clostridium genus, among others. However, supplementation with adiponectin resulted in lower abundance of the Roseburia genus and a higher proportion of the Enterococcus genus. In conclusion, the supplementation with leptin and adiponectin throughout the suckling period had an impact on both the IEL composition and the gut microbiota pattern, suggesting a modulatory role of these adipokines on the development of intestinal functionality.
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Affiliation(s)
- Blanca Grases-Pintó
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona, Spain.,Research Institute of Nutrition and Food Safety of the University of Barcelona (INSA-UB), Santa Coloma de Gramenet, Spain
| | - Mar Abril-Gil
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona, Spain.,Research Institute of Nutrition and Food Safety of the University of Barcelona (INSA-UB), Santa Coloma de Gramenet, Spain
| | - Margarida Castell
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona, Spain.,Research Institute of Nutrition and Food Safety of the University of Barcelona (INSA-UB), Santa Coloma de Gramenet, Spain
| | - Maria J Rodríguez-Lagunas
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona, Spain.,Research Institute of Nutrition and Food Safety of the University of Barcelona (INSA-UB), Santa Coloma de Gramenet, Spain
| | - Stephen Burleigh
- Food for Health Science Centre, Lund University, Lund, Sweden.,Department of Food Technology, Engineering and Nutrition, Lund University, Lund, Sweden
| | - Frida Fåk Hållenius
- Food for Health Science Centre, Lund University, Lund, Sweden.,Department of Food Technology, Engineering and Nutrition, Lund University, Lund, Sweden
| | - Olena Prykhodko
- Food for Health Science Centre, Lund University, Lund, Sweden.,Department of Food Technology, Engineering and Nutrition, Lund University, Lund, Sweden
| | - Francisco J Pérez-Cano
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona, Spain.,Research Institute of Nutrition and Food Safety of the University of Barcelona (INSA-UB), Santa Coloma de Gramenet, Spain
| | - Àngels Franch
- Physiology Section, Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, Barcelona, Spain.,Research Institute of Nutrition and Food Safety of the University of Barcelona (INSA-UB), Santa Coloma de Gramenet, Spain
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26
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Burge K, Gunasekaran A, Eckert J, Chaaban H. Curcumin and Intestinal Inflammatory Diseases: Molecular Mechanisms of Protection. Int J Mol Sci 2019; 20:ijms20081912. [PMID: 31003422 PMCID: PMC6514688 DOI: 10.3390/ijms20081912] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 02/07/2023] Open
Abstract
Intestinal inflammatory diseases, such as Crohn’s disease, ulcerative colitis, and necrotizing enterocolitis, are becoming increasingly prevalent. While knowledge of the pathogenesis of these related diseases is currently incomplete, each of these conditions is thought to involve a dysfunctional, or overstated, host immunological response to both bacteria and dietary antigens, resulting in unchecked intestinal inflammation and, often, alterations in the intestinal microbiome. This inflammation can result in an impaired intestinal barrier allowing for bacterial translocation, potentially resulting in systemic inflammation and, in severe cases, sepsis. Chronic inflammation of this nature, in the case of inflammatory bowel disease, can even spur cancer growth in the longer-term. Recent research has indicated certain natural products with anti-inflammatory properties, such as curcumin, can help tame the inflammation involved in intestinal inflammatory diseases, thus improving intestinal barrier function, and potentially, clinical outcomes. In this review, we explore the potential therapeutic properties of curcumin on intestinal inflammatory diseases, including its antimicrobial and immunomodulatory properties, as well as its potential to alter the intestinal microbiome. Curcumin may play a significant role in intestinal inflammatory disease treatment in the future, particularly as an adjuvant therapy.
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Affiliation(s)
- Kathryn Burge
- Department of Pediatrics, Division of Neonatology, University of Oklahoma Health Sciences Center, 1200 North Everett Drive, ETNP7504, Oklahoma City, OK 73104, USA.
| | - Aarthi Gunasekaran
- Department of Pediatrics, Division of Neonatology, University of Oklahoma Health Sciences Center, 1200 North Everett Drive, ETNP7504, Oklahoma City, OK 73104, USA.
| | - Jeffrey Eckert
- Department of Pediatrics, Division of Neonatology, University of Oklahoma Health Sciences Center, 1200 North Everett Drive, ETNP7504, Oklahoma City, OK 73104, USA.
| | - Hala Chaaban
- Department of Pediatrics, Division of Neonatology, University of Oklahoma Health Sciences Center, 1200 North Everett Drive, ETNP7504, Oklahoma City, OK 73104, USA.
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27
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Meng X, Zhou HY, Shen HH, Lufumpa E, Li XM, Guo B, Li BZ. Microbe-metabolite-host axis, two-way action in the pathogenesis and treatment of human autoimmunity. Autoimmun Rev 2019; 18:455-475. [PMID: 30844549 DOI: 10.1016/j.autrev.2019.03.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 11/05/2018] [Indexed: 12/14/2022]
Abstract
The role of microorganism in human diseases cannot be ignored. These microorganisms have evolved together with humans and worked together with body's mechanism to maintain immune and metabolic function. Emerging evidence shows that gut microbe and their metabolites open up new doors for the study of human response mechanism. The complexity and interdependence of these microbe-metabolite-host interactions are rapidly being elucidated. There are various changes of microbial levels in models or in patients of various autoimmune diseases (AIDs). In addition, the relevant metabolites involved in mechanism mainly include short-chain fatty acids (SCFAs), bile acids (BAs), and polysaccharide A (PSA). Meanwhile, the interaction between microbes and host genes is also a factor that must be considered. It has been demonstrated that human microbes are involved in the development of a variety of AIDs, including organ-specific AIDs and systemic AIDs. At the same time, microbes or related products can be used to remodel body's response to alleviate or cure diseases. This review summarizes the latest research of microbes and their related metabolites in AIDs. More importantly, it highlights novel and potential therapeutics, including fecal microbial transplantation, probiotics, prebiotics, and synbiotics. Nonetheless, exact mechanisms still remain elusive, and future research will focus on finding a specific strain that can act as a biomarker of an autoimmune disease.
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Affiliation(s)
- Xiang Meng
- School of Stomatology, Anhui Medical University, Hefei, Anhui, China
| | - Hao-Yue Zhou
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, 81 Meishan Road, Hefei, Anhui, China
| | - Hui-Hui Shen
- Department of Clinical Medicine, The second School of Clinical Medicine, Anhui Medical University, Anhui, Hefei, China
| | - Eniya Lufumpa
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Xiao-Mei Li
- Department of Rheumatology & Immunology, Anhui Provincial Hospital, Anhui, Hefei, China
| | - Biao Guo
- The Second Affiliated Hospital of Anhui Medical University, Anhui, Hefei, China
| | - Bao-Zhu Li
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, 81 Meishan Road, Hefei, Anhui, China.
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28
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Chen S, Tan B, Xia Y, Liao S, Wang M, Yin J, Wang J, Xiao H, Qi M, Bin P, Liu G, Ren W, Yin Y. Effects of dietary gamma-aminobutyric acid supplementation on the intestinal functions in weaning piglets. Food Funct 2019; 10:366-378. [PMID: 30601517 DOI: 10.1039/c8fo02161a] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
This study aims to investigate the effects of dietary gamma-aminobutyric acid (GABA) supplementation on the growth performance, intestinal immunity, intestinal GABAergic system, amino acid profiles and gut microflora of the weaned piglets. Totally sixteen healthy piglets were randomly assigned into two groups to be fed with the basal diet (Con group) or the basal diet with GABA (20 mg kg-1) supplementation. Body weights and feed intakes were monitored weekly. Piglets were sacrificed after 3 weeks of GABA supplementation to collect the blood, ileum, ileal mucosa and luminal content. Immune-associated factors, GABAergic system, amino acid profiles, and microbiota in the ileum and serum amino acid profiles were explored. The results showed that GABA supplementation improved the growth performance and modulated the intestinal immunity with inhibiting the gene expressions of IL-22, proinflammatory cytokines (IL-1 and IL-18), and Muc1, but promoted the expressions of anti-inflammatory cytokines (IFN-γ, IL-4, and IL-10), TLR6 and MyD88. GABA regulated a few components of the intestinal GABAergic system, increased the levels of most amino acids in the ileal mucosa but reduced the serum amino acid profiles. GABA regulated the population and diversity of intestinal microbiota, such as the abundances of the dominant microbial populations, the community richness, and diversity of the ileal microbiota. In conclusion, GABA supplementation modulated the intestinal functions, including intestinal immunity, intestinal amino acid profiles and gut microbiota, and the results can be helpful for understanding the functions of GABA in the intestine.
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Affiliation(s)
- Shuai Chen
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, Hunan, China.
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29
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Groves HE, Guo-Parke H, Broadbent L, Shields MD, Power UF. Characterisation of morphological differences in well-differentiated nasal epithelial cell cultures from preterm and term infants at birth and one-year. PLoS One 2018; 13:e0201328. [PMID: 30517096 PMCID: PMC6281239 DOI: 10.1371/journal.pone.0201328] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 11/13/2018] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Innate immune responses of airway epithelium are important defences against respiratory pathogens and allergens. Newborn infants are at greater risk of severe respiratory infections compared to older infants, while premature infants are at greater risk than full term infants. However, very little is known regarding human neonatal airway epithelium immune responses and whether age-related morphological and/or innate immune changes contribute to the development of airway disease. METHODS We collected nasal epithelial cells from 41 newborn infants (23 term, 18 preterm) within 5 days of birth. Repeat sampling was achieved for 24 infants (13 term, 11 preterm) at a median age of 12.5 months. Morphologically- and physiologically-authentic well-differentiated primary paediatric nasal epithelial cell (WD-PNEC) cultures were generated and characterised using light microscopy and immunofluorescence. RESULTS WD-PNEC cultures were established for 15/23 (65%) term and 13/18 (72%) preterm samples at birth, and 9/13 (69%) term and 8/11 (73%) preterm samples at one-year. Newborn and infant WD-PNEC cultures demonstrated extensive cilia coverage, mucous production and tight junction integrity. Newborn WD-PNECs took significantly longer to reach full differentiation and were noted to have much greater proportions of goblet cells compared to one-year repeat WD-PNECs. No differences were evident in ciliated/goblet cell proportions between term- and preterm-derived WD-PNECs at birth or one-year old. CONCLUSION We describe the successful generation of newborn-derived WD-PNEC cultures and their revival from frozen. We also compared the characteristics of WD-PNECs derived from infants born at term with those born prematurely at birth and at one-year-old. The development of WD-PNEC cultures from newborn infants provides a powerful and exciting opportunity to study the development of airway epithelium morphology, physiology, and innate immune responses to environmental or infectious insults from birth.
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Affiliation(s)
- Helen E. Groves
- Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, The Queen’s University of Belfast, Belfast, Northern Ireland, United Kingdom
| | - Hong Guo-Parke
- Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, The Queen’s University of Belfast, Belfast, Northern Ireland, United Kingdom
| | - Lindsay Broadbent
- Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, The Queen’s University of Belfast, Belfast, Northern Ireland, United Kingdom
| | - Michael D. Shields
- Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, The Queen’s University of Belfast, Belfast, Northern Ireland, United Kingdom
- Department of Paediatric Respiratory Medicine, Royal Belfast Hospital for Sick Children, Belfast, Northern Ireland, United Kingdom
| | - Ultan F. Power
- Wellcome Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Sciences, The Queen’s University of Belfast, Belfast, Northern Ireland, United Kingdom
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30
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Miklavcic JJ, Badger TM, Bowlin AK, Matazel KS, Cleves MA, LeRoith T, Saraf MK, Chintapalli SV, Piccolo BD, Shankar K, Yeruva L. Human Breast-Milk Feeding Enhances the Humoral and Cell-Mediated Immune Response in Neonatal Piglets. J Nutr 2018; 148:1860-1870. [PMID: 30247686 PMCID: PMC6209812 DOI: 10.1093/jn/nxy170] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 06/22/2018] [Accepted: 07/03/2018] [Indexed: 12/24/2022] Open
Abstract
Background The benefits of breastfeeding infants are well characterized, including those on the immune system. However, determining the mechanism by which human breast milk (HBM) elicits effects on immune response requires investigation in an appropriate animal model. Objective The primary aim of this study was to develop a novel porcine model and to determine the differential effects of feeding HBM and a commercial milk formula (MF) on immune response and gastrointestinal microbial colonization in a controlled environment. Methods Male piglets were fed HBM (n = 26) or MF (n = 26) from day 2 through day 21. Piglets were vaccinated (n = 9/diet group) with cholera toxin and cholera toxin subunit B (CTB) and tetanus toxoid at 21 d or were fed placebo (n = 6/diet group) and then weaned to a standard solid diet at the age of 21 d. Humoral and cell-mediated immune responses were assessed from blood on days 35 and 48. Immune response was further examined from tissues, including mesenteric lymph nodes (MLNs), Peyer's patches (PPs), and spleen. The colonization of gut microbiota was characterized from feces on days 16 and 49. Results Serum antibody titers in piglets fed HBM were 4-fold higher (P < 0.05) to CTB and 3-fold higher (P < 0.05) to tetanus toxoid compared with piglets fed MF on day 48. Compared with MF, the numbers of immunoglobulin A antibody-producing cells to CTB were 13-fold higher (P < 0.05) in MLNs and 11-fold higher (P < 0.05) in PPs in the HBM diet group on day 51. In addition, significantly increased T cell proliferation was observed in the HBM group relative to the MF group. Furthermore, microbial diversity in the HBM group was lower (P < 0.05) than in the MF group. Conclusions This porcine model appears to be valid for studying the effects of early postnatal diet on immune responses and the gastrointestinal microbiome. Our results lay the groundwork for future studies defining the role of infant diet on microbiota and immune function.
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Affiliation(s)
- John J Miklavcic
- Arkansas Children's Nutrition Center, Little Rock, AR
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Thomas M Badger
- Arkansas Children's Nutrition Center, Little Rock, AR
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Anne K Bowlin
- Arkansas Children's Nutrition Center, Little Rock, AR
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Katelin S Matazel
- Arkansas Children's Nutrition Center, Little Rock, AR
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Mario A Cleves
- Arkansas Children's Nutrition Center, Little Rock, AR
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR
- Arkansas Children's Research Institute, Little Rock, AR
| | - Tanya LeRoith
- Department of Biomedical Science and Pathobiology, Virginia Polytechnic Institute and State University, Blacksburg, VA
| | - Manish K Saraf
- Arkansas Children's Nutrition Center, Little Rock, AR
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Sree V Chintapalli
- Arkansas Children's Nutrition Center, Little Rock, AR
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Brian D Piccolo
- Arkansas Children's Nutrition Center, Little Rock, AR
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Kartik Shankar
- Arkansas Children's Nutrition Center, Little Rock, AR
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR
| | - Laxmi Yeruva
- Arkansas Children's Nutrition Center, Little Rock, AR
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR
- Arkansas Children's Research Institute, Little Rock, AR
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31
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Ewald DR, Sumner SCJ. Human microbiota, blood group antigens, and disease. WILEY INTERDISCIPLINARY REVIEWS. SYSTEMS BIOLOGY AND MEDICINE 2018; 10:e1413. [PMID: 29316320 PMCID: PMC5902424 DOI: 10.1002/wsbm.1413] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 11/05/2017] [Accepted: 11/09/2017] [Indexed: 12/11/2022]
Abstract
Far from being just "bugs in our guts," the microbiota interacts with the body in previously unimagined ways. Research into the genome and the microbiome has revealed that the human body and the microbiota have a long-established but only recently recognized symbiotic relationship; homeostatic balance between them regulates body function. That balance is fragile, easily disturbed, and plays a fundamental role in human health-our very survival depends on the healthy functioning of these microorganisms. Increasing rates of cardiovascular, autoimmune, and inflammatory diseases, as well as epidemics in obesity and diabetes in recent decades are believed to be explained, in part, by unintended effects on the microbiota from vaccinations, poor diets, environmental chemicals, indiscriminate antibiotic use, and "germophobia." Discovery and exploration of the brain-gut-microbiota axis have provided new insights into functional diseases of the gut, autoimmune and stress-related disorders, and the role of probiotics in treating certain affective disorders; it may even explain some aspects of autism. Research into dietary effects on the human gut microbiota led to its classification into three proposed enterotypes, but also revealed the surprising role of blood group antigens in shaping those populations. Blood group antigens have previously been associated with disease risks; their subsequent association with the microbiota may reveal mechanisms that lead to development of nutritional interventions and improved treatment modalities. Further exploration of associations between specific enteric microbes and specific metabolites will foster new dietary interventions, treatment modalities, and genetic therapies, and inevitably, their application in personalized healthcare strategies. This article is categorized under: Laboratory Methods and Technologies > Metabolomics Translational, Genomic, and Systems Medicine > Translational Medicine Physiology > Mammalian Physiology in Health and Disease.
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Affiliation(s)
- D Rose Ewald
- Department of Nutrition, University of North Carolina at Chapel Hill, Kannapolis, NC, 28081
| | - Susan CJ Sumner
- Department of Nutrition, University of North Carolina at Chapel Hill, Kannapolis, NC, 28081
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32
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Ó Cuív P, Giri R, Hoedt EC, McGuckin MA, Begun J, Morrison M. Enterococcus faecalis AHG0090 is a Genetically Tractable Bacterium and Produces a Secreted Peptidic Bioactive that Suppresses Nuclear Factor Kappa B Activation in Human Gut Epithelial Cells. Front Immunol 2018; 9:790. [PMID: 29720977 PMCID: PMC5915459 DOI: 10.3389/fimmu.2018.00790] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 03/29/2018] [Indexed: 12/20/2022] Open
Abstract
Enterococcus faecalis is an early coloniser of the human infant gut and contributes to the development of intestinal immunity. To better understand the functional capacity of E. faecalis, we constructed a broad host range RP4 mobilizable vector, pEHR513112, that confers chloramphenicol resistance and used a metaparental mating approach to isolate E. faecalis AHG0090 from a fecal sample collected from a healthy human infant. We demonstrated that E. faecalis AHG0090 is genetically tractable and could be manipulated using traditional molecular microbiology approaches. E. faecalis AHG0090 was comparable to the gold-standard anti-inflammatory bacterium Faecalibacterium prausnitzii A2-165 in its ability to suppress cytokine-mediated nuclear factor kappa B (NF-κB) activation in human gut-derived LS174T goblet cell like and Caco-2 enterocyte-like cell lines. E. faecalis AHG0090 and F. prausnitzii A2-165 produced secreted low molecular weight NF-κB suppressive peptidic bioactives. Both bioactives were sensitive to heat and proteinase K treatments although the E. faecalis AHG0090 bioactive was more resilient to both forms of treatment. As expected, E. faecalis AHG0090 suppressed IL-1β-induced NF-κB-p65 subunit nuclear translocation and expression of the NF-κB regulated genes IL-6, IL-8 and CXCL-10. Finally, we determined that E. faecalis AHG0090 is distantly related to other commensal strains and likely encodes niche factors that support effective colonization of the infant gut.
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Affiliation(s)
- Páraic Ó Cuív
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Rabina Giri
- Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, QLD, Australia
| | - Emily C Hoedt
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Michael A McGuckin
- Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, QLD, Australia
| | - Jakob Begun
- Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, QLD, Australia
| | - Mark Morrison
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
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33
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Kang LJ, Koleva PT, Field CJ, Giesbrecht GF, Wine E, Becker AB, Mandhane PJ, Turvey SE, Subbarao P, Sears MR, Scott JA, Kozyrskyj AL. Maternal depressive symptoms linked to reduced fecal Immunoglobulin A concentrations in infants. Brain Behav Immun 2018; 68:123-131. [PMID: 29032226 DOI: 10.1016/j.bbi.2017.10.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 09/30/2017] [Accepted: 10/10/2017] [Indexed: 01/23/2023] Open
Abstract
Secretory Immunoglobulin A (sIgA) plays a critical role to infant gut mucosal immunity. Delayed IgA production is associated with greater risk of allergic disease. Murine models of stressful events during pregnancy and infancy show alterations in gut immunity and microbial composition in offspring, but little is known about the stress-microbiome-immunity pathways in humans. We investigated differences in infant fecal sIgA concentrations according to the presence of maternal depressive symptoms during and after pregnancy. A subsample of 403 term infants from the Canadian Healthy Infant Longitudinal Development (CHILD) cohort were studied. Their mothers completed the Center of Epidemiologic Studies Depression Scale when enrolled prenatally and again postpartum. Quantified by Immundiagnostik sIgA ELISA kit, sIgA from infant stool was compared across maternal depressive symptom categories using Mann-Whitney U-tests and logistic regression models that controlled for various covariates. Twelve percent of women reported clinically significant depressive symptoms only prenatally, 8.7% had only postpartum symptoms and 9.2% had symptoms both pre and postnatally. Infants born to mothers with pre and postnatal symptoms had significantly lower median sIgA concentrations than those in the reference group (4.4 mg/g feces vs. 6.3 mg/g feces; p = 0.033). The odds for sIgA concentrations in the lowest quartile was threefold higher (95% CI: 1.25-7.55) when mothers had pre and postnatal symptoms, after controlling for breastfeeding status, infant age, antibiotics exposure and other covariates. Postnatal symptoms were not associated with fecal sIgA, independently of breastfeeding status. Infants born to mothers with depressive symptoms appear to have lower fecal sIgA concentrations, predisposing them to higher risk for allergic disease.
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Affiliation(s)
- Liane J Kang
- Department of Pediatrics, University of Alberta, 3-527 Edmonton Clinic Health Academy, 11405-87 Avenue, Edmonton, Alberta T6G 1C9, Canada
| | - Petya T Koleva
- Department of Pediatrics, University of Alberta, 3-527 Edmonton Clinic Health Academy, 11405-87 Avenue, Edmonton, Alberta T6G 1C9, Canada
| | - Catherine J Field
- Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-126A Li Ka Shing Center for Health Research Innovation, Edmonton, Alberta T6G 2E1, Canada
| | - Gerald F Giesbrecht
- Department of Pediatrics, University of Calgary, CDC, Owerko Centre, Room 355, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada; Department of Community Health Sciences, University of Calgary, CDC, Owerko Centre, Room 355, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Eytan Wine
- Department of Pediatrics, University of Alberta, 4-577 Edmonton Clinic Health Academy, 11405-87 Avenue, Edmonton, Alberta T6G 1C9, Canada
| | - Allan B Becker
- Department of Pediatrics and Child Health, University of Manitoba, 513 - 715 McDermot Avenue Winnipeg, Manitoba R3E 3P4, Canada
| | - Piushkumar J Mandhane
- Department of Pediatrics, University of Alberta, 1048B Research Transition Facility, Edmonton, Alberta T6G 2V2, Canada
| | - Stuart E Turvey
- Department of Pediatrics, University of British Columbia, BC Children's Hospital, Room A2-147, 950 W 28th Avenue, Vancouver, British Columbia V5Z 4H4, Canada
| | - Padmaja Subbarao
- Department of Pediatrics, University of Toronto, The Hospital for Sick Children, Peter Gilgan Center for Research and Learning, 686 Bay Street, 10-9716, Toronto, Ontario M5G 0A4, Canada
| | - Malcolm R Sears
- Department of Medicine, McMaster University, 50 Charlton Avenue E., Hamilton, Ontario L8N 4A6, Canada
| | - James A Scott
- Dalla Lana School of Public Health, University of Toronto, 223 College Street, Toronto, Ontario M5T 1R4, Canada
| | - Anita L Kozyrskyj
- Department of Pediatrics, University of Alberta, 3-527 Edmonton Clinic Health Academy, 11405-87 Avenue, Edmonton, Alberta T6G 1C9, Canada; School of Public Health, University of Alberta, 3-527 Edmonton Clinic Health Academy, 11405-87 Avenue, Edmonton, Alberta T6G 1C9, Canada.
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Piccolo BD, Mercer KE, Bhattacharyya S, Bowlin AK, Saraf MK, Pack L, Chintapalli SV, Shankar K, Adams SH, Badger TM, Yeruva L. Early Postnatal Diets Affect the Bioregional Small Intestine Microbiome and Ileal Metabolome in Neonatal Pigs. J Nutr 2017; 147:1499-1509. [PMID: 28659406 DOI: 10.3945/jn.117.252767] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 05/10/2017] [Accepted: 06/05/2017] [Indexed: 11/14/2022] Open
Abstract
Background: Breastfeeding is known to be protective against gastrointestinal disorders and may modify gut development. Although the gut microbiome has been implicated, little is known about how early diet affects the small intestine microbiome.Objective: We hypothesized that disparate early diets would promote unique microbial profiles in the small intestines of neonatal pigs.Methods: Male and female 2-d-old White Dutch Landrace pigs were either sow fed or provided dairy (Similac Advance powder; Ross Products Abbott Laboratories) or soy (Enfamil Prosobee Lipil powder; Mead Johnson Nutritionals) infant formulas until day 21. Bacterial ecology was assessed in the contents of the small intestine through the use of 16S ribosomal RNA sequencing. α-Diversity, β-diversity, and differential abundances of operational taxonomic units were assessed by ANOVA, permutational ANOVA, and negative binomial regression, respectively. Ileum tissue metabolomics were measured by LC-mass spectrometry and assessed by weighted correlation network analysis.Results: Greater α-diversity was observed in the duodena of sow-fed compared with formula-fed neonatal pigs (P < 0.05). No differences were observed in the ilea. Firmicutes represented the most abundant phylum across all diets in duodena (78.8%, 80.1%, and 53.4% relative abundance in sow, dairy, and soy groups, respectively), followed by Proteobacteria in sow (12.2%) and dairy (12.4%) groups and Cyanobacteria in soy-fed (36.2%) pigs. In contrast to those in the duodenum, Proteobacteria was the dominant phylum in the ileum, with >60% relative abundance in all of the groups. In the duodenum, 77 genera were altered by diet, followed by 48 in the jejunum and 19 in the ileum. Metabolomics analyses revealed associations between ileum tissue metabolites (e.g., acylcarnitines, 3-aminoisobutyric acid) and diet-responsive microbial genera.Conclusions: These results indicate that the neonatal diet has regional effects on the small intestine microbiome in pigs, with the most pronounced effects occurring in the duodena. Regional effects may be important factors when considering gut tissue metabolism and development in the postnatal period.
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Affiliation(s)
- Brian D Piccolo
- Arkansas Children's Nutrition Center, Little Rock, AR; .,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR; and
| | - Kelly E Mercer
- Arkansas Children's Nutrition Center, Little Rock, AR.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR; and
| | - Sudeepa Bhattacharyya
- Arkansas Children's Nutrition Center, Little Rock, AR.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR; and
| | - Anne K Bowlin
- Arkansas Children's Nutrition Center, Little Rock, AR.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR; and
| | - Manish K Saraf
- Arkansas Children's Nutrition Center, Little Rock, AR.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR; and
| | - Lindsay Pack
- Arkansas Children's Nutrition Center, Little Rock, AR
| | - Sree V Chintapalli
- Arkansas Children's Nutrition Center, Little Rock, AR.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR; and
| | - Kartik Shankar
- Arkansas Children's Nutrition Center, Little Rock, AR.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR; and
| | - Sean H Adams
- Arkansas Children's Nutrition Center, Little Rock, AR.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR; and
| | - Thomas M Badger
- Arkansas Children's Nutrition Center, Little Rock, AR.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR; and
| | - Laxmi Yeruva
- Arkansas Children's Nutrition Center, Little Rock, AR; .,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR; and.,Arkansas Children's Research Institute, Little Rock, AR
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McCormick BJJ, Lee GO, Seidman JC, Haque R, Mondal D, Quetz J, Lima AAM, Babji S, Kang G, Shrestha SK, Mason CJ, Qureshi S, Bhutta ZA, Olortegui MP, Yori PP, Samie A, Bessong P, Amour C, Mduma E, Patil CL, Guerrant RL, Lang DR, Gottlieb M, Caulfield LE, Kosek MN. Dynamics and Trends in Fecal Biomarkers of Gut Function in Children from 1-24 Months in the MAL-ED Study. Am J Trop Med Hyg 2016; 96:465-472. [PMID: 27994110 PMCID: PMC5303054 DOI: 10.4269/ajtmh.16-0496] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 09/06/2016] [Indexed: 12/28/2022] Open
Abstract
Growth and development shortfalls that are disproportionately prevalent in children living in poor environmental conditions are postulated to result, at least in part, from abnormal gut function. Using data from The Etiology, Risk Factors, and Interactions of Enteric Infections and Malnutrition and the Consequences for Child Health and Development (MAL-ED) longitudinal cohort study, we examine biomarkers of gut inflammation and permeability in relation to environmental exposures and feeding practices. Trends in the concentrations of three biomarkers, myeloperoxidase (MPO), neopterin (NEO), and α-1-antitrypsin (AAT), are described from fecal samples collected during the first 2 years of each child's life. A total of 22,846 stool samples were processed during the longitudinal sampling of 2,076 children 0–24 months of age. Linear mixed models were constructed to examine the relationship between biomarker concentrations and recent food intake, symptoms of illness, concurrent enteropathogen infection, and socioeconomic status. Average concentrations of MPO, NEO, and AAT were considerably higher than published references for healthy adults. The concentration of each biomarker tended to decrease over the first 2 years of life and was highly variable between samples from each individual child. Both MPO and AAT were significantly elevated by recent breast milk intake. All three biomarkers were associated with pathogen presence, although the strength and direction varied by pathogen. The interpretation of biomarker concentrations is subject to the context of their collection. Herein, we identify that common factors (age, breast milk, and enteric infection) influence the concentration of these biomarkers. Within the context of low- and middle-income communities, we observe concentrations that indicate gut abnormalities, but more appropriate reference standards are needed.
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Affiliation(s)
| | - Gwenyth O Lee
- Tulane University, New Orleans, Louisiana.,Fogarty International Center/National Institutes of Health, Bethesda, Maryland
| | - Jessica C Seidman
- Fogarty International Center/National Institutes of Health, Bethesda, Maryland
| | - Rashidul Haque
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Dinesh Mondal
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | | | | | | | | | - Sanjaya K Shrestha
- Walter Reed/Armed Forces Research Institute of Medical Science (AFRIMS) Research Unit, Kathmandu, Nepal
| | - Carl J Mason
- Walter Reed/Armed Forces Research Institute of Medical Science (AFRIMS) Research Unit, Kathmandu, Nepal
| | | | | | - Maribel Paredes Olortegui
- Asociacion Benéfica Proyectos en Informatica, Salud, Medicina, y Agricultura (A. B. PRISMA), Iquitos, Peru
| | - Pablo Peñataro Yori
- Asociacion Benéfica Proyectos en Informatica, Salud, Medicina, y Agricultura (A. B. PRISMA), Iquitos, Peru
| | | | | | | | | | | | | | - Dennis R Lang
- Foundation for the National Institutes of Health, Bethesda, Maryland.,Fogarty International Center/National Institutes of Health, Bethesda, Maryland
| | - Michael Gottlieb
- Foundation for the National Institutes of Health, Bethesda, Maryland
| | - Laura E Caulfield
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Margaret N Kosek
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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Őrfi E, Szebeni J. The immune system of the gut and potential adverse effects of oral nanocarriers on its function. Adv Drug Deliv Rev 2016; 106:402-409. [PMID: 27693367 DOI: 10.1016/j.addr.2016.09.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
There is substantial effort in modern pharmacotherapy to use nanoparticle-based drug delivery systems (nDDS) for improving the oral absorption of drugs. An often neglected circumstance regarding this approach is that the gut is a major part of the immune system that may be vulnerable for immune-cell toxicity, or mediate humoral immune response against various components of nDDS, recognized as foreign. This review recapitulates the structure and function of gut-associated lymphoid tissue (GALT), i.e., the enteral section of mucosa-associated lymphoid tissue (MALT) and reminds how virus-like nDDS may potentially induce immunogenicity just as attenuated or killed viruses do in oral vaccines. Furthermore, we present examples for immune toxicities of emulsifiers and polymer-containing micelles, manifested in complement activation-related pseudoallergy (CARPA). A major message of the review is that early testing of immunogenicity or other adverse immune effects of nDDS in appropriate test systems or models may be prudent to recognize the risk of rare immune problems that may surface in late-stage clinical trials or after marketing of nDDS.
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Affiliation(s)
- Erik Őrfi
- Nanomedicine Research and Education Center, Department of Pathophysiology, Semmelweis University, and SeroScience Ltd, Budapest, Hungary
| | - János Szebeni
- Nanomedicine Research and Education Center, Department of Pathophysiology, Semmelweis University, and SeroScience Ltd, Budapest, Hungary; Department of Nanobiotechnology and Regenerative Medicine, Faculty of Health, Miskolc University, Miskolc, Hungary; SeroScience Ltd., Budapest, Hungary.
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Abstract
Secretory immunoglobulin A (IgA) plays a critical role in gut mucosal immune defense. Initially provided by breastmilk, IgA production by the infant gut is gradually stimulated by developing gut microbiota. This study reports associations between infant fecal IgA concentrations 4 months after birth, breastfeeding status and other pre/postnatal exposures in 47 infants in the Canadian Healthy Infant Longitudinal Development cohort. Breastfed infants and first-born infants had higher median fecal IgA concentrations (23.11 v. 9.34 µg/g protein, P<0.01 and 22.19 v. 8.23 µg/g protein, P=0.04). IgA levels increased successively with exclusivity of breastfeeding (β-coefficient, 0.37, P<0.05). This statistical association was independent of maternal parity and household pets. In the absence of breastfeeding, female sex and pet exposure elevated fecal IgA to levels found in breastfed infants. In addition to breastfeeding, infant fecal IgA associations with pre/postnatal exposures may affect gut immunity and risk of allergic disease.
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Battersby AJ, Khara J, Wright VJ, Levy O, Kampmann B. Antimicrobial Proteins and Peptides in Early Life: Ontogeny and Translational Opportunities. Front Immunol 2016; 7:309. [PMID: 27588020 PMCID: PMC4989132 DOI: 10.3389/fimmu.2016.00309] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 07/29/2016] [Indexed: 12/18/2022] Open
Abstract
While developing adaptive immune responses, young infants are especially vulnerable to serious infections, including sepsis, meningitis, and pneumonia. Antimicrobial proteins and peptides (APPs) are key effectors that function as broad-spectrum anti-infectives. This review seeks to summarize the clinically relevant functional qualities of APPs and the increasing clinical trial evidence for their use to combat serious infections in infancy. Levels of APPs are relatively low in early life, especially in infants born preterm or with low birth weight (LBW). There are several rationales for the potential clinical utility of APPs in the prevention and treatment of infections in infants: (a) APPs may be most helpful in those with reduced levels; (b) during sepsis microbial products signal via pattern recognition receptors causing potentially harmful inflammation that APPs may counteract; and (c) in the era of antibiotic resistance, development of new anti-infective strategies is essential. Evidence supports the potential clinical utility of exogenous APPs to reduce infection-related morbidity in infancy. Further studies should characterize the ontogeny of antimicrobial activity in mucosal and systemic compartments, and examine the efficacy of exogenous-APP formulations to inform translational development of APPs for infant groups.
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Affiliation(s)
- Anna J Battersby
- Academic Paediatrics, Imperial College London, London, UK; Medical Research Council (MRC) Unit, Vaccines and Immunity Theme, Fajara, Gambia
| | - Jasmeet Khara
- Academic Paediatrics, Imperial College London, London, UK; Department of Pharmacy, National University of Singapore, Singapore
| | | | - Ofer Levy
- Precision Vaccines Program, Department of Medicine, Division of Infectious Diseases, Boston Children's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Beate Kampmann
- Academic Paediatrics, Imperial College London, London, UK; Medical Research Council (MRC) Unit, Vaccines and Immunity Theme, Fajara, Gambia
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Verstraete EH, Mahieu L, De Coen K, Vogelaers D, Blot S. Impact of healthcare-associated sepsis on mortality in critically ill infants. Eur J Pediatr 2016; 175:943-52. [PMID: 27118596 DOI: 10.1007/s00431-016-2726-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 03/30/2016] [Accepted: 04/18/2016] [Indexed: 12/15/2022]
Abstract
UNLABELLED Healthcare-associated sepsis (HAS) is a life-threatening complication in neonatal intensive care. Research into the impact of HAS on mortality adjusted for comorbidities is however limited. We conducted a historical cohort study to evaluate impact of HAS on mortality stratified by birth weight and risk factors for mortality in the HAS cohort. HAS was defined according to the National Institute of Child Health and Human Development criteria. Logistic regression was used to calculate adjusted odds of mortality. Of 5134 admissions, 342 infants developed HAS (6.7 %). Mortality in the total and HAS cohort was 5.6 and 10.5 %, respectively. The majority of HAS was caused by commensals (HAS-COM, 59.4 %) and 40.6 % by recognized pathogens (HAS-REC). Adjusted for comorbidities, "HAS-REC" is only a risk factor for mortality in newborns >1500 g (adjusted odds ratio [aOR] 2.3, confidence interval [CI] 1.1-4.9). Post-hoc analysis identified HAS-REC as an independent risk factor for mortality in infants with gastrointestinal disease (aOR 4.8, CI 2.1-10.8). "Renal insufficiency," "focal intestinal perforation," and "necrotizing enterocolitis" are independent risk factors for mortality in the HAS cohort (aOR 13.5, CI 4.9-36.6; aOR 7.7, CI 1.5-39.2; aOR 2.1, CI 1.0-4.7, respectively). CONCLUSION For very low birth weight infants (≤1500 g), several comorbidities overrule the impact of HAS on mortality. After adjustment for comorbidities, HAS-REC independently predicts in-hospital mortality in heavier infants and in those with gastrointestinal disease. WHAT IS KNOWN • The relationship between healthcare-associated sepsis and mortality is influenced by the causative pathogen and is confounded by comorbidities. • Research on impact of healthcare-associated sepsis on mortality adjusted for comorbidities is limited as well as research on independent risk factors for mortality in neonates with sepsis. What is New: • We included a large list of comorbidities and stratified risk by birth weight in order to assess the true effect of healthcare-associated sepsis on mortality. • Risk for mortality was calculated for commensal flora and for recognized pathogens as causative micro-organisms.
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Affiliation(s)
| | - Ludo Mahieu
- Department of Neonatal Medicine, Antwerp University Hospital, Antwerp, Belgium.,Department of Pediatrics, University of Antwerp, Antwerp, Belgium
| | - Kris De Coen
- Department of Neonatal Medicine, Ghent University Hospital, Ghent, Belgium
| | - Dirk Vogelaers
- Department of Internal Medicine, Ghent University, Ghent, Belgium.,Department of General Internal Medicine, Infectious Diseases and Psychosomatic Disorders, Ghent University Hospital, Ghent, Belgium
| | - Stijn Blot
- Department of Internal Medicine, Ghent University, Ghent, Belgium.,Burns, Trauma and Critical Care Research Centre, The University of Queensland, Brisbane, Australia
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Abstract
Necrotising enterocolitis (NEC) is an uncommon, but devastating intestinal inflammatory disease that predominantly affects preterm infants. NEC is sometimes dubbed the spectre of neonatal intensive care units, as its onset is insidiously non-specific, and once the disease manifests, the damage inflicted on the baby's intestine is already disastrous. Subsequent sepsis and multi-organ failure entail a mortality of up to 65%. Development of effective treatments for NEC has stagnated, largely because of our lack of understanding of NEC pathogenesis. It is clear, however, that NEC is driven by a profoundly dysregulated immune system. NEC is associated with local increases in pro-inflammatory mediators, e.g. Toll-like receptor (TLR) 4, nuclear factor-κB, tumour necrosis factor, platelet-activating factor (PAF), interleukin (IL)-18, interferon-gamma, IL-6, IL-8 and IL-1β. Deficiencies in counter-regulatory mechanisms, including IL-1 receptor antagonist (IL-1Ra), TLR9, PAF-acetylhydrolase, transforming growth factor beta (TGF-β)1&2, IL-10 and regulatory T cells likely facilitate a pro-inflammatory milieu in the NEC-afflicted intestine. There is insufficient evidence to conclude a predominance of an adaptive Th1-, Th2- or Th17-response in the disease. Our understanding of the accompanying regulation of systemic immunity remains poor; however, IL-1Ra, IL-6, IL-8 and TGF-β1 show promise as biomarkers. Here, we chart the emerging immunological landscape that underpins NEC by reviewing the involvement and potential clinical implications of innate and adaptive immune mediators and their regulation in NEC.
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Bridgman SL, Konya T, Azad MB, Guttman DS, Sears MR, Becker AB, Turvey SE, Mandhane PJ, Subbarao P, Scott JA, Field CJ, Kozyrskyj AL. High fecal IgA is associated with reduced Clostridium difficile colonization in infants. Microbes Infect 2016; 18:543-9. [PMID: 27235197 DOI: 10.1016/j.micinf.2016.05.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 04/29/2016] [Accepted: 05/04/2016] [Indexed: 12/16/2022]
Abstract
Colonization of infants with Clostridium difficile is on the rise. Although better tolerated by infants than adults, it is a risk factor for future allergic disease. The present study describes associations between infant fecal immunoglobulin A (IgA) and colonization with C. difficile in 47 infants enrolled in the Canadian Healthy Infant Longitudinal Development (CHILD) study. C. difficile colonization was observed in over half (53%) of the infants. Median IgA was lower in infants colonized with C. difficile (10.9 μg versus 25.5 μg per g protein; p = 0.18). A smaller proportion of infants with IgA in the highest tertile were colonized with C. difficile compared to the other tertiles (31.3% versus 64.5%, p = 0.03). In unadjusted analysis, odds of colonization with C. difficile was reduced by 75% (OR 0.25 95% CI 0.07, 0.91 p = 0.04) among infants with IgA in the highest tertile compared to those in the other tertiles. Following adjustment for parity, birth mode and breastfeeding, this association was even stronger (aOR 0.17, 95% CI 0.03, 0.94, p = 0.04). Our study provides evidence that high fecal IgA, independent of breastfeeding, is associated with reduced likelihood of C. difficile colonization in infancy.
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Affiliation(s)
| | - Tedd Konya
- Dalla Lana School of Public Health, University of Toronto, ON, Canada
| | - Meghan B Azad
- Department of Pediatrics, University of Alberta, AB, Canada; Pediatrics and Child Health, Children's Hospital Research Institute of Manitoba, University of Manitoba, MB, Canada
| | - David S Guttman
- Centre for the Analysis of Genome Evolution and Function, University of Toronto, ON, Canada
| | - Malcolm R Sears
- Department of Medicine, de Groote School of Medicine, McMaster University, ON, Canada
| | - Allan B Becker
- Pediatrics and Child Health, Children's Hospital Research Institute of Manitoba, University of Manitoba, MB, Canada
| | - Stuart E Turvey
- Department of Pediatrics, Child & Family Research Institute and BC Children's Hospital, University of British Columbia, BC, Canada
| | | | - Padmaja Subbarao
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, ON, Canada
| | | | - James A Scott
- Dalla Lana School of Public Health, University of Toronto, ON, Canada
| | - Catherine J Field
- Agriculture, Food and Nutritional Sciences, University of Alberta, AB, Canada
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Kan B, Razzaghian HR, Lavoie PM. An Immunological Perspective on Neonatal Sepsis. Trends Mol Med 2016; 22:290-302. [PMID: 26993220 PMCID: PMC5104533 DOI: 10.1016/j.molmed.2016.02.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 02/08/2016] [Indexed: 02/07/2023]
Abstract
Despite concerted international efforts, mortality from neonatal infections remains unacceptably high in some areas of the world, particularly for premature infants. Recent developments in flow cytometry and next-generation sequencing technologies have led to major discoveries over the past few years, providing a more integrated understanding of the developing human immune system in the context of its microbial environment. We review these recent findings, focusing on how in human newborns incomplete maturation of the immune system before a full term of gestation impacts on their vulnerability to infection. We also discuss some of the clinical implications of this research in guiding the design of more-accurate age-adapted diagnostic and preventive strategies for neonatal sepsis.
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Affiliation(s)
- Bernard Kan
- Child and Family Research Institute, Vancouver, British Columbia, Canada; Experimental Medicine Program, Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Hamid Reza Razzaghian
- Child and Family Research Institute, Vancouver, British Columbia, Canada; Experimental Medicine Program, Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Pascal M Lavoie
- Child and Family Research Institute, Vancouver, British Columbia, Canada; Experimental Medicine Program, Department of Medicine, University of British Columbia, Vancouver, Canada; Department of Pediatrics, University of British Columbia, Vancouver, Canada.
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43
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Verstraete EH, De Coen K, Vogelaers D, Blot S. Risk Factors for Health Care-Associated Sepsis in Critically Ill Neonates Stratified by Birth Weight. Pediatr Infect Dis J 2015; 34:1180-6. [PMID: 26244835 DOI: 10.1097/inf.0000000000000851] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Health care-associated bloodstream infection (HABSI) is a frequent complication in neonatal intensive care. Research on risk factors stratified by birth weight and adjusted for severity of illness and comorbidities is limited. Our objective is to describe independent risk factors for HABSI in critically ill neonates with emphasis on risk variation between birth weight groups. METHODS We performed a single-center historical cohort study in a tertiary referral center. A neonatal intensive care-audit system was used to identify eligible neonates admitted for ≥72 hours (2002-2011). HABSI is defined according to National Institute of Child Health and Human Development criteria. Risk factors for HABSI were assessed by univariate and logistic regression analysis for the total cohort and for birth weight subgroups, that is, neonates ≤1500 g and >1500 g. RESULTS A total of 342 neonates developed HABSI in 5134 admissions of ≥72 hours (6.7%). Very low birth weight, total parenteral nutrition (TPN), mechanical ventilation, gastrointestinal disease, surgery (cardiac and other type), and renal insufficiency are independent risk factors for the total cohort. Gastrointestinal disease and cardiac surgery are independent risk factors in both birth weight groups; mechanical ventilation (odds ratio [OR]: 2.6; confidence interval [CI]: 1.6-4.0) and other type of surgery (OR: 4.3; CI: 2.1-8.8) are solely independent risk factors in the ≤1500-g cohort; TPN is exclusively an independent risk factor (OR: 7.9; CI: 3.9-16.2) in the >1500-g cohort. CONCLUSIONS In our neonatal intensive care unit, risk stratification by birth weight revealed some difference. Special attention concerning infection control practices is for neonates receiving TPN, mechanical ventilation, cardiac surgery, and with a gastrointestinal disease.
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Affiliation(s)
- Evelien Hilde Verstraete
- From the *Department of Internal Medicine, Ghent University, Belgium; †Department of Neonatal Medicine, ‡Department of General Internal Medicine, Infectious Diseases and Psychosomatic Disorders, Ghent University Hospital, Belgium; and §Burns, Trauma and Critical Care Research Centre, The University of Queensland, Brisbane, Australia
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Goldwater PN. Gut Microbiota and Immunity: Possible Role in Sudden Infant Death Syndrome. Front Immunol 2015; 6:269. [PMID: 26089821 PMCID: PMC4453473 DOI: 10.3389/fimmu.2015.00269] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 05/15/2015] [Indexed: 11/23/2022] Open
Abstract
The gut microbiome influences the development of the immune system of young mammals; the establishment of a normal gut microbiome is thought to be important for the health of the infant during its early development. As the role of bacteria in the causation of sudden infant death syndrome (SIDS) is backed by strong evidence, the balance between host immunity and potential bacterial pathogens is likely to be pivotal. Bacterial colonization of the infant colon is influenced by age, mode of delivery, diet, environment, and antibiotic exposure. The gut microbiome influences several systems including gut integrity and development of the immune system; therefore, gut microflora could be important in protection against bacteria and/or their toxins identified in SIDS infants. The aims of the review are to explore (1) the role of the gut microbiome in relation to the developmentally critical period in which most SIDS cases occur; (2) the mechanisms by which the gut microbiome might induce inflammation resulting in transit of bacteria from the lumen into the bloodstream; and (3) assessment of the clinical, physiological, pathological, and microbiological evidence for bacteremia leading to the final events in SIDS pathogenesis.
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Affiliation(s)
- Paul N Goldwater
- Discipline of Paediatrics, School of Paediatrics and Reproductive Health, University of Adelaide , North Adelaide, SA , Australia
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Lim JC, Golden JM, Ford HR. Pathogenesis of neonatal necrotizing enterocolitis. Pediatr Surg Int 2015; 31:509-18. [PMID: 25854935 DOI: 10.1007/s00383-015-3697-9] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/23/2015] [Indexed: 12/22/2022]
Abstract
Although necrotizing enterocolitis (NEC) is the most lethal gastrointestinal disease in the neonatal population, its pathogenesis is poorly understood. Risk factors include prematurity, bacterial colonization, and formula feeding. This review examines how mucosal injury permits opportunistic pathogens to breach the gut barrier and incite an inflammatory response that leads to sustained overproduction of mediators such as nitric oxide and its potent adduct, peroxynitrite. These mediators not only exacerbate the initial mucosal injury, but they also suppress the intestinal repair mechanisms, which further compromises the gut barrier and culminates in bacterial translocation, sepsis, and full-blown NEC.
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Affiliation(s)
- Joanna C Lim
- Division of Pediatric Surgery, Children's Hospital Los Angeles, 4650 Sunset Blvd., Mailstop #72, Los Angeles, CA, 90027, USA
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Abstract
PURPOSE OF REVIEW With depressive disorders the leading source of disability globally, the identification of new targets for prevention and management is imperative. A rapidly emerging field of research suggests that the microbiome-gut-brain axis is of substantial relevance to mood and behaviour. Similarly, unhealthy diet has recently emerged as a significant correlate of and risk factor for depression. This review provides evidence for the gut microbiota as a key factor mediating the link between diet and depressive illness. RECENT FINDINGS The development of new technologies is affording a better understanding of how diet influences gut microbiota composition and activity and how this may, in turn, influence depressive illness. New interventions are also suggesting the possible utility of pre and probiotic formulations and fermented food in influencing mental health. SUMMARY Although in its early stages, the emerging field of research focused on the human microbiome suggests an important role for the gut microbiota in influencing brain development, behaviour and mood in humans. The recognition that the gut microbiota interacts bidirectionally with other environmental risk factors, such as diet and stress, suggests promise in the development of interventions targeting the gut microbiota for the prevention and treatment of common mental health disorders.
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Catrina AI, Deane KD, Scher JU. Gene, environment, microbiome and mucosal immune tolerance in rheumatoid arthritis. Rheumatology (Oxford) 2014; 55:391-402. [PMID: 25539828 DOI: 10.1093/rheumatology/keu469] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Indexed: 12/20/2022] Open
Abstract
RA is a complex multifactorial chronic disease that transitions through several stages. Multiple studies now support that there is a prolonged phase in early RA development during which there is serum elevation of RA-related autoantibodies including RF and ACPAs in the absence of clinically evident synovitis. This suggests that RA pathogenesis might originate in an extra-articular location, which we hypothesize is a mucosal site. In discussing this hypothesis, we will present herein the current understanding of mucosal immunology, including a discussion about the generation of autoimmune responses at these surfaces. We will also examine how other factors such as genes, microbes and other environmental toxins (including tobacco smoke) could influence the triggering of autoimmunity at mucosal sites and eventually systemic organ disease. We will also propose a research agenda to improve our understanding of the role of mucosal inflammation in the development of RA.
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Affiliation(s)
- Anca I Catrina
- Rheumatology Unit, Department of Medicine, Karolinska University Hospital and Institutet, Stockholm, Sweden,
| | - Kevin D Deane
- Division of Rheumatology, University of Colorado, School of Medicine, Aurora, CO and
| | - Jose U Scher
- Division of Rheumatology, Department of Medicine, New York University School of Medicine and Hospital for Joint Diseases, New York, NY, USA
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Tormo-Badia N, Håkansson Å, Vasudevan K, Molin G, Ahrné S, Cilio CM. Antibiotic treatment of pregnant non-obese diabetic mice leads to altered gut microbiota and intestinal immunological changes in the offspring. Scand J Immunol 2014; 80:250-60. [PMID: 24965690 DOI: 10.1111/sji.12205] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 06/09/2014] [Indexed: 02/04/2023]
Abstract
The intestinal microbiota is important for tolerance induction through mucosal immunological responses. The composition of the gut microbiota of an infant is affected by environmental factors such as diet, disease and antibiotic treatment. However, already in utero, these environmental factors can affect the immunological development of the foetus and influence the future gut microbiota of the infant. To investigate the effects of antibiotic treatment of pregnant mothers on the offspring's gut microbiome and diabetes development, we treated non-obese diabetic (NOD) mice with a cocktail of antibiotics during gestation and the composition of the gut microbiota, diabetes incidence and major gut-related T lymphocyte populations were investigated in the offspring. We observed a persistent reduction in the general diversity of the gut microbiota in the offspring from NOD mothers treated with antibiotics during gestation compared with offspring from control mothers. In addition, by clustering the present bacterial taxa with principal component analysis, we found a differential clustering of gut microbiota in the offspring from NOD mothers treated with antibiotics during gestation compared with offspring from control mothers. Offspring from NOD mothers treated with antibiotics during gestation also showed some immunological alterations in the gut immune system, which could be related to the diversity of the gut microbiome and influence modulation of diabetes development at 20 weeks. Our data point out maternal derangement of the intestinal microbiota as a potential environmental risk factor for T1D development.
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Affiliation(s)
- N Tormo-Badia
- Department of Clinical Sciences, Cellular Autoimmunity Unit, Lund University, Skåne University Hospital, Malmö, Sweden
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Cipriani F, Dondi A, Ricci G. Recent advances in epidemiology and prevention of atopic eczema. Pediatr Allergy Immunol 2014; 25:630-8. [PMID: 25406640 DOI: 10.1111/pai.12309] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/14/2014] [Indexed: 12/22/2022]
Abstract
Atopic dermatitis (AD), named also atopic eczema, is a chronic relapsing inflammatory skin disease with a considerable social and economic burden. The primum movens of AD is in most cases a genetic and/or immune-supported defect of the skin barrier, facilitating penetration and sensitization to food or airborne allergens, as well as infections by Staphylococcus aureus, herpes simplex virus, or other microbes. New pathogenetic concepts have generated new approaches to prevention and therapy of AD. In particular, the daily use of emollients in newborns at high risk of AD has shown interesting results, with a reduction in the cumulative incidence of AD ranging from 32% to 50% of the treated infants. On the other hand, the AD preventive efficacy of food and/or inhalant allergen avoidance has been questioned, and supplementation strategies (vitamin D, probiotics, or other compounds) need to be further investigated.
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Affiliation(s)
- Francesca Cipriani
- Pediatric Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
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Clarke G, O'Mahony SM, Dinan TG, Cryan JF. Priming for health: gut microbiota acquired in early life regulates physiology, brain and behaviour. Acta Paediatr 2014; 103:812-9. [PMID: 24798884 DOI: 10.1111/apa.12674] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 02/28/2014] [Accepted: 04/28/2014] [Indexed: 12/15/2022]
Abstract
UNLABELLED The infant gut microbiome is dynamic, and radical shifts in composition occur during the first 3 years of life. Disruption of these developmental patterns, and the impact of the microbial composition of our gut on brain and behaviour, has attracted much recent attention. Integrating these observations is an important new research frontier. CONCLUSION Early-life perturbations of the developing gut microbiota can impact on the central nervous system and potentially lead to adverse mental health outcomes.
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Affiliation(s)
- G Clarke
- Alimentary Pharmabiotic Centre; University College Cork; Cork Ireland
- Department of Psychiatry; University College Cork; Cork Ireland
| | - SM O'Mahony
- Alimentary Pharmabiotic Centre; University College Cork; Cork Ireland
- Department of Anatomy and Neuroscience; University College Cork; Cork Ireland
| | - TG Dinan
- Alimentary Pharmabiotic Centre; University College Cork; Cork Ireland
- Department of Psychiatry; University College Cork; Cork Ireland
| | - JF Cryan
- Alimentary Pharmabiotic Centre; University College Cork; Cork Ireland
- Department of Anatomy and Neuroscience; University College Cork; Cork Ireland
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