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Zhang D, Ji H, Wang S, Chen M, Liu H. Parity changed fecal microbiota of sows and its correlation with milk long-chain fatty acid profiles. Appl Microbiol Biotechnol 2024; 108:4. [PMID: 38170312 DOI: 10.1007/s00253-023-12852-2] [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: 05/16/2023] [Revised: 10/05/2023] [Accepted: 10/17/2023] [Indexed: 01/05/2024]
Abstract
The goal of this study was to characterize the fecal microbiota profiles of gestating sows, along with the fecal microbiota and milk fatty acid contents of lactating sows and their correlations with reproductive performance at different parities. The results showed that the microbiota of third parity gestating sows contained a greater abundance of Prevotella compared to the other two parity groups, while lactating sows exhibiting higher reproductive performance at fifth parity exhibited a greater abundance of Lactobacillus species. The lactating sows with higher reproductive performance also exhibited higher total monounsaturated fatty acid (MUFA) and higher total polyunsaturated fatty acid (PUFA) levels relative to sows with lower reproductive performance at all three analyzed parities, especially sows at fifth parity produced the lowest total saturated fatty acid (SFA) levels, and showed the highest C18:1n9c and C18:2n6c concentrations. In correlational analyses, the abundance of Oligella, Lactobacillus, and Corynebacterium was highly positively correlated with C18:1n9c, C18:2n6c, and C20:4n6. Overall, these results provide a rational basis for efforts to improve sow reproductive performance through the provision of precisely regulated nutrition. KEY POINTS: • Clear differences in the fecal microbiota were evident between sows of different parities. • Lactating sows with high reproductive performance showed distinct milk fatty acid profiles.
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Affiliation(s)
- Dongyan Zhang
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.
| | - Haifeng Ji
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Sixin Wang
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Meixia Chen
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Hui Liu
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.
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Jara J, Alba C, Del Campo R, Fernández L, Sáenz de Pipaón M, Rodríguez JM, Orgaz B. Linking preterm infant gut microbiota to nasograstric enteral feeding tubes: exploring potential interactions and microbial strain transmission. Front Pediatr 2024; 12:1397398. [PMID: 38952433 PMCID: PMC11215057 DOI: 10.3389/fped.2024.1397398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 06/03/2024] [Indexed: 07/03/2024] Open
Abstract
Introduction Preterm birth is a growing problem worldwide. Staying at a neonatal intensive care unit (NICU) after birth is critical for the survival of preterm infants whose feeding often requires the use of nasogastric enteral feeding tubes (NEFT). These can be colonized by hospital-associated pathobionts that can access the gut of the preterm infants through this route. Since the gut microbiota is the most impactful factor on maturation of the immune system, any disturbance in this may condition their health. Therefore, the aim of this study is to assess the impact of NEFT-associated microbial communities on the establishment of the gut microbiota in preterm infants. Material and methods A metataxonomic analysis of fecal and NEFT-related samples obtained during the first 2 weeks of life of preterm infants was performed. The potential sharing of strains isolated from the same set of samples of bacterial species involved in NICU's outbreaks, was assessed by Random Amplification of Polymorphic DNA (RAPD) genotyping. Results In the samples taken 48 h after birth (NEFT-1 and Me/F1), Staphylococcus spp. was the most abundant genera (62% and 14%, respectively) and it was latter displaced to 5.5% and 0.45%, respectively by Enterobacteriaceae. Significant differences in beta diversity were detected in NEFT and fecal samples taken at day 17 after birth (NEFT-3 and F3) (p = 0.003 and p = 0.024, respectively). Significant positive correlations were found between the most relevant genera detected in NEFT-3 and F3. 28% of the patients shared at least one RAPD-PCR profile in fecal and NEFT samples and 11% of the total profiles were found at least once simultaneously in NEFT and fecal samples from the same patient. Conclusion The results indicate a parallel bacterial colonization of the gut of preterm neonates and the NEFTs used for feeding, potentially involving strain sharing between these niches. Moreover, the same bacterial RAPD profiles were found in neonates hospitalized in different boxes, suggesting a microbial transference within the NICU environment. This study may assist clinical staff in implementing best practices to mitigate the spread of pathogens that could threaten the health of preterm infants.
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Affiliation(s)
- J. Jara
- Department of Galenic Pharmacy and Food Science, School of Veterinary Sciences, University Complutense of Madrid (UCM), Madrid, Spain
| | - C. Alba
- Department of Nutrition and Food Science, School of Veterinary Sciences, University Complutense of Madrid (UCM), Madrid, Spain
| | - R. Del Campo
- Department of Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
| | - L. Fernández
- Department of Galenic Pharmacy and Food Science, School of Veterinary Sciences, University Complutense of Madrid (UCM), Madrid, Spain
| | - M. Sáenz de Pipaón
- Department of Neonatology, La Paz University Hospital of Madrid, Madrid, Spain
- Department of Pediatrics, Autonoma University of Madrid, Madrid, Spain
| | - J. M. Rodríguez
- Department of Nutrition and Food Science, School of Veterinary Sciences, University Complutense of Madrid (UCM), Madrid, Spain
| | - B. Orgaz
- Department of Galenic Pharmacy and Food Science, School of Veterinary Sciences, University Complutense of Madrid (UCM), Madrid, Spain
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Dombrowska-Pali A, Wiktorczyk-Kapischke N, Chrustek A, Olszewska-Słonina D, Gospodarek-Komkowska E, Socha MW. Human Milk Microbiome-A Review of Scientific Reports. Nutrients 2024; 16:1420. [PMID: 38794658 PMCID: PMC11124344 DOI: 10.3390/nu16101420] [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: 04/05/2024] [Revised: 05/01/2024] [Accepted: 05/06/2024] [Indexed: 05/26/2024] Open
Abstract
One of the most important bioactive components of breast milk are free breast milk oligosaccharides, which are a source of energy for commensal intestinal microorganisms, stimulating the growth of Bifidobacterium, Lactobacillus, and Bacteroides in a child's digestive tract. There is some evidence that maternal, perinatal, and environmental-cultural factors influence the modulation of the breast milk microbiome. This review summarizes research that has examined the composition of the breast milk microbiome and the factors that may influence it. The manuscript highlights the potential importance of the breast milk microbiome for the future development and health of children. The origin of bacteria in breast milk is thought to include the mother's digestive tract (entero-mammary tract), bacterial exposure to the breast during breastfeeding, and the retrograde flow of breast milk from the infant's mouth to the woman's milk ducts. Unfortunately, despite increasingly more precise methods for assessing microorganisms in human milk, the topic of the human milk microbiome is still quite limited and requires scientific research that takes into account various conditions.
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Affiliation(s)
- Agnieszka Dombrowska-Pali
- Department of Perinatology, Gynecology and Gynecologic Oncology, Faculty of Health Sciences, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Łukasiewicza 1, 85-821 Bydgoszcz, Poland;
| | - Natalia Wiktorczyk-Kapischke
- Department of Microbiology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie-Skłodowskiej 9, 85-094 Bydgoszcz, Poland; (N.W.-K.); (E.G.-K.)
| | - Agnieszka Chrustek
- Department of Pathobiochemistry and Clinical Chemistry, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie-Skłodowskiej 9, 85-094 Bydgoszcz, Poland; (A.C.); (D.O.-S.)
| | - Dorota Olszewska-Słonina
- Department of Pathobiochemistry and Clinical Chemistry, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie-Skłodowskiej 9, 85-094 Bydgoszcz, Poland; (A.C.); (D.O.-S.)
| | - Eugenia Gospodarek-Komkowska
- Department of Microbiology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie-Skłodowskiej 9, 85-094 Bydgoszcz, Poland; (N.W.-K.); (E.G.-K.)
| | - Maciej W. Socha
- Department of Perinatology, Gynecology and Gynecologic Oncology, Faculty of Health Sciences, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Łukasiewicza 1, 85-821 Bydgoszcz, Poland;
- Department of Obstetrics and Gynecology, St. Adalberts’s Hospital in Gdańsk, Copernicus Healthcare Entity LLC, Jana Pawła II 50, 80-462 Gdańsk, Poland
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Power ML, Muletz-Wolz CR, Bornbusch SL. Microbiome: Mammalian milk microbiomes: sources of diversity, potential functions, and future research directions. REPRODUCTION AND FERTILITY 2024; 5:e230056. [PMID: 38513351 PMCID: PMC11046322 DOI: 10.1530/raf-23-0056] [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: 08/21/2023] [Accepted: 03/18/2024] [Indexed: 03/23/2024] Open
Abstract
Graphical abstract Abstract Milk is an ancient, fundamental mammalian adaptation that provides nutrition and biochemical communication to offspring. Microbiomes have been detected in milk of all species studied to date. In this review, we discuss: (a) routes by which microbes may enter milk; (b) evidence for proposed milk microbiome adaptive functions; (c) variation in milk microbiomes across mammals; and (d) future research directions, including suggestions for how to address outstanding questions on the viability and functionality of milk microbiomes. Milk microbes may be sourced from the maternal gastrointestinal tract, oral, skin, and mammary gland microbiomes and from neonatal oral and skin microbiomes. Given the variety of microbial sources, stochastic processes strongly influence milk microbiome assembly, but milk microbiomes appear to be influenced by maternal evolutionary history, diet, environment, and milk nutrients. Milk microbes have been proposed to colonize the neonatal intestinal tract and produce gene and metabolic products that influence physiology, metabolism, and immune system development. Limited epidemiological data indicate that early-life exposure to milk microbes can result in positive, long-term health outcomes. Milk microbiomes can be modified by dietary changes including providing the mother with probiotics and prebiotics. Milk replacers (i.e. infant formula) may benefit from supplementation with probiotics and prebiotics, but data are lacking on probiotics' usefulness, and supplementation should be evidence based. Overall, milk microbiome literature outside of human and model systems is scarce. We highlight the need for mechanistic studies in model species paired with comparative studies across mammals to further our understanding of mammalian milk microbiome evolution. A broader study of milk microbiomes has the potential to inform animal care with relevance to ex situ endangered species. Lay summary Milk is an ancient adaptation that supports the growth and development of mammalian neonates and infants. Beyond its fundamental nutritional function, milk influences all aspects of neonatal development, especially immune function. All kinds of milks so far studied have contained a milk microbiome. In this review, we focus on what is known about the collection of bacterial members found in milk microbiomes. Milk microbiomes include members sourced from maternal and infant microbiomes and they appear to be influenced by maternal evolutionary history, diet, milk nutrients, and environment, as well as by random chance. Once a neonate begins nursing, microbes from milk colonize their gut and produce byproducts that influence their physiology, metabolism, and immune development. Empirical data on milk microbiomes outside of humans and model systems are sparse. Greater study of milk microbiomes across mammals will expand our understanding of mammalian evolution and improve the health of animals under human care.
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Affiliation(s)
- Michael L Power
- Center for Species Survival, Smithsonian’s National Zoo and Conservation Biology Institute, Washington, District of Columbia, USA
| | - Carly R Muletz-Wolz
- Center for Conservation Genomics, Smithsonian’s National Zoo and Conservation Biology Institute, Washington, District of Columbia, USA
| | - Sally L Bornbusch
- Center for Conservation Genomics, Smithsonian’s National Zoo and Conservation Biology Institute, Washington, District of Columbia, USA
- Department of Nutrition Science, Smithsonian’s National Zoo and Conservation Biology Institute, Washington, District of Columbia, USA
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Heston SM, Lim CSE, Ong C, Chua MC, Kelly MS, Yeo KT. Strain-resolved metagenomic analysis of the gut as a reservoir for bloodstream infection pathogens among premature infants in Singapore. Gut Pathog 2023; 15:55. [PMID: 37974294 PMCID: PMC10652614 DOI: 10.1186/s13099-023-00583-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/08/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND Gut dysbiosis contributes to the high risk of bloodstream infection (BSI) among premature infants. Most prior studies of the premature infant gut microbiota were conducted in Western countries and prior to development of current tools for strain-resolved analysis. METHODS We performed metagenomic sequencing of weekly fecal samples from 75 premature infants at a single hospital in Singapore. We evaluated associations between clinical factors and gut microbiota composition using PERMANOVA and mixed effects linear regression. We used inStrain to perform strain-level analyses evaluating for gut colonization by BSI-causing strains. RESULTS Median (interquartile range) gestation was 27 (25, 29) weeks, and 63% of infants were born via Cesarean section. Antibiotic exposures (PERMANOVA; R2 = 0.017, p = 0.001) and postnatal age (R2 = 0.015, p = 0.001) accounted for the largest amount of variability in gut microbiota composition. Increasing postnatal age was associated with higher relative abundances of several common pathogens (Enterococcus faecalis: p < 0.0001; Escherichia coli: p < 0.0001; Klebsiella aerogenes: p < 0.0001; Klebsiella pneumoniae: p < 0.0001). Antibiotic exposures were generally associated with lower relative abundances of both frequently beneficial bacteria (e.g., Bifidobacterium species) and common enteric pathogens (e.g., Enterobacter, Klebsiella species). We identified strains identical to the blood culture isolate in fecal samples from 12 of 16 (75%) infants who developed BSI, including all infections caused by typical enteric bacteria. CONCLUSIONS Antibiotic exposures were the dominant modifiable factor affecting gut microbiota composition in a large cohort of premature infants from South-East Asia. Strain-resolved analyses indicate that the gut is an important reservoir for organisms causing BSI among premature infants.
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Affiliation(s)
- Sarah M Heston
- Division of Pediatric Infectious Diseases, Duke University School of Medicine, Durham, NC, USA
| | - Charis Shu En Lim
- Department of Neonatology, KK Women's and Children's Hospital, Singapore, Singapore
| | - Chengsi Ong
- Department of Neonatology, KK Women's and Children's Hospital, Singapore, Singapore
- Duke-NUS Medical School, Singapore, Singapore
- Department of Nutrition and Dietetics, KK Women's and Children's Hospital, Singapore, Singapore
| | - Mei Chien Chua
- Department of Neonatology, KK Women's and Children's Hospital, Singapore, Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - Matthew S Kelly
- Division of Pediatric Infectious Diseases, Duke University School of Medicine, Durham, NC, USA
| | - Kee Thai Yeo
- Department of Neonatology, KK Women's and Children's Hospital, Singapore, Singapore.
- Duke-NUS Medical School, Singapore, Singapore.
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Mollova D, Vasileva T, Bivolarski V, Iliev I. The Enzymatic Hydrolysis of Human Milk Oligosaccharides and Prebiotic Sugars from LAB Isolated from Breast Milk. Microorganisms 2023; 11:1904. [PMID: 37630464 PMCID: PMC10458952 DOI: 10.3390/microorganisms11081904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 08/27/2023] Open
Abstract
Breastfeeding is essential in the first months of a newborn's life. Breast milk is a source of crucial macronutrients, prebiotic oligosaccharides, and potential probiotic strains of bacteria. Oligosaccharides from breast milk (HMOs) are a significant part of the composition of breast milk and represent a complex of digestible sugars. This study aims to elucidate the enzymatic hydrolysis of these oligosaccharides and other prebiotics by the bacteria present in breast milk. We used modified methods to isolate oligosaccharides (HMOs) from human milk. Using unique techniques, we isolated and identified different bacteria from breast milk, mainly Lactobacillus fermentum. Using enzymatic analyses, we established the participation of α-fucosidase, α-glucosidase, β-galactosidase, and β-glucosidase from breast milk bacteria in the hydrolysis of prebiotic sugars. We also optimized the scheme for isolating oligosaccharides from breast milk by putting the lyophilized product into different food media. We found that the oligosaccharides from breast milk (HMOs) are a potent inducer for the secretion of the studied bacterial enzymes. Also, we found that all the lactobacilli strains we studied in detail could digest mucin-linked glycans. The degradation of these sugars is perhaps a built-in defense mechanism in cases where other sugars are lacking in the environment. We also determined fucosidase activity in some of the isolated strains. We recorded the highest values (2.5 U/mg in L. fermentum ss8) when the medium's oligosaccharides isolated from breast milk were present. Lactobacilli and Bifidobacteria supplied with breast milk are the first colonizers in most cases in the gastrointestinal tract of the newborn. The presence and study of different genes for synthesizing other enzyme systems and transporters of various sugars in this type of bacteria are essential.
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Affiliation(s)
- Daniela Mollova
- Department of Biochemistry and Microbiology, Faculty of Biology, Plovdiv University “Paisii Hilendarski”, 4000 Plovdiv, Bulgaria; (T.V.); (V.B.); (I.I.)
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7
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Andres SF, Zhang Y, Kuhn M, Scottoline B. Building better barriers: how nutrition and undernutrition impact pediatric intestinal health. Front Immunol 2023; 14:1192936. [PMID: 37545496 PMCID: PMC10401430 DOI: 10.3389/fimmu.2023.1192936] [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: 03/24/2023] [Accepted: 06/26/2023] [Indexed: 08/08/2023] Open
Abstract
Chronic undernutrition is a major cause of death for children under five, leaving survivors at risk for adverse long-term consequences. This review focuses on the role of nutrients in normal intestinal development and function, from the intestinal epithelium, to the closely-associated mucosal immune system and intestinal microbiota. We examine what is known about the impacts of undernutrition on intestinal physiology, with focus again on the same systems. We provide a discussion of existing animal models of undernutrition, and review the evidence demonstrating that correcting undernutrition alone does not fully ameliorate effects on intestinal function, the microbiome, or growth. We review efforts to treat undernutrition that incorporate data indicating that improved recovery is possible with interventions focused not only on delivery of sufficient energy, macronutrients, and micronutrients, but also on efforts to correct the abnormal intestinal microbiome that is a consequence of undernutrition. Understanding of the role of the intestinal microbiome in the undernourished state and correction of the phenotype is both complex and a subject that holds great potential to improve recovery. We conclude with critical unanswered questions in the field, including the need for greater mechanistic research, improved models for the impacts of undernourishment, and new interventions that incorporate recent research gains. This review highlights the importance of understanding the mechanistic effects of undernutrition on the intestinal ecosystem to better treat and improve long-term outcomes for survivors.
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Affiliation(s)
- Sarah F. Andres
- Division of Pediatric Gastroenterology, Department of Pediatrics, Oregon Health and Science University, Portland, OR, United States
| | - Yang Zhang
- Division of Pediatric Gastroenterology, Department of Pediatrics, Oregon Health and Science University, Portland, OR, United States
| | - Madeline Kuhn
- Division of Pediatric Gastroenterology, Department of Pediatrics, Oregon Health and Science University, Portland, OR, United States
| | - Brian Scottoline
- Division of Neonatology, Department of Pediatrics, Oregon Health and Science University, Portland, OR, United States
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Leo S, Cetiner OF, Pittet LF, Messina NL, Jakob W, Falquet L, Curtis N, Zimmermann P. Metagenomics analysis of the neonatal intestinal resistome. Front Pediatr 2023; 11:1169651. [PMID: 37397142 PMCID: PMC10313230 DOI: 10.3389/fped.2023.1169651] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 04/25/2023] [Indexed: 07/04/2023] Open
Abstract
Introduction The intestinal microbiome forms a major reservoir for antibiotic resistance genes (ARGs). Little is known about the neonatal intestinal resistome. Objective The objective of this study was to investigate the intestinal resistome and factors that influence the abundance of ARGs in a large cohort of neonates. Methods Shotgun metagenomics was used to analyse the resistome in stool samples collected at 1 week of age from 390 healthy, term-born neonates who did not receive antibiotics. Results Overall, 913 ARGs belonging to 27 classes were identified. The most abundant ARGs were those conferring resistance to tetracyclines, quaternary ammonium compounds, and macrolide-lincosamide-streptogramin-B. Phylogenetic composition was strongly associated with the resistome composition. Other factors that were associated with the abundance of ARGs were delivery mode, gestational age, birth weight, feeding method, and antibiotics in the last trimester of pregnancy. Sex, ethnicity, probiotic use during pregnancy, and intrapartum antibiotics had little effect on the abundance of ARGs. Conclusion Even in the absence of direct antibiotic exposure, the neonatal intestine harbours a high abundance and a variety of ARGs.
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Affiliation(s)
- Stefano Leo
- Department for Community Health, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- Department of Paediatrics, Fribourg Hospital, Fribourg, Switzerland
| | - Omer F. Cetiner
- Istanbul Faculty of Medicine, Istanbul University, Istanbul, Türkiye
| | - Laure F. Pittet
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
- Infectious Diseases Research Group, Murdoch Children’s Research Institute, Parkville, VIC, Australia
- Pediatric Infectious Diseases Unit, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - Nicole L. Messina
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
- Infectious Diseases Research Group, Murdoch Children’s Research Institute, Parkville, VIC, Australia
| | - William Jakob
- Microbiology Laboratory, Fribourg Hospital, Fribourg, Switzerland
| | - Laurent Falquet
- Department of Biology, University of Fribourg and Swiss Institute of Bioinformatics, Fribourg, Switzerland
| | - Nigel Curtis
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
- Infectious Diseases Research Group, Murdoch Children’s Research Institute, Parkville, VIC, Australia
- Infectious Diseases Unit, The Royal Children’s Hospital Melbourne, Parkville, VIC, Australia
| | - Petra Zimmermann
- Department for Community Health, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- Department of Paediatrics, Fribourg Hospital, Fribourg, Switzerland
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
- Infectious Diseases Research Group, Murdoch Children’s Research Institute, Parkville, VIC, Australia
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França A. The Role of Coagulase-Negative Staphylococci Biofilms on Late-Onset Sepsis: Current Challenges and Emerging Diagnostics and Therapies. Antibiotics (Basel) 2023; 12:antibiotics12030554. [PMID: 36978421 PMCID: PMC10044083 DOI: 10.3390/antibiotics12030554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/24/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023] Open
Abstract
Infections are one of the most significant complications of neonates, especially those born preterm, with sepsis as one of the principal causes of mortality. Coagulase-negative staphylococci (CoNS), a group of staphylococcal species that naturally inhabit healthy human skin and mucosa, are the most common cause of late-onset sepsis, especially in preterms. One of the risk factors for the development of CoNS infections is the presence of implanted biomedical devices, which are frequently used for medications and/or nutrient delivery, as they serve as a scaffold for biofilm formation. The major concerns related to CoNS infections have to do with the increasing resistance to multiple antibiotics observed among this bacterial group and biofilm cells’ increased tolerance to antibiotics. As such, the treatment of CoNS biofilm-associated infections with antibiotics is increasingly challenging and considering that antibiotics remain the primary form of treatment, this issue will likely persist in upcoming years. For that reason, the development of innovative and efficient therapeutic measures is of utmost importance. This narrative review assesses the current challenges and emerging diagnostic tools and therapies for the treatment of CoNS biofilm-associated infections, with a special focus on late-onset sepsis.
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Affiliation(s)
- Angela França
- Centre of Biological Engineering, LIBRO—Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal;
- LABBELS—Associate Laboratory in Biotechnology and Bioengineering and Microelectromechanical Systems, Braga and Guimarães, Portugal
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Best KP, Yelland LN, Collins CT, McPhee AJ, Rogers GB, Choo J, Gibson RA, Murguia-Peniche T, Varghese J, Cooper TR, Makrides M. Growth of late preterm infants fed nutrient-enriched formula to 120 days corrected age-A randomized controlled trial. Front Pediatr 2023; 11:1146089. [PMID: 37205223 PMCID: PMC10185835 DOI: 10.3389/fped.2023.1146089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 03/29/2023] [Indexed: 05/21/2023] Open
Abstract
Objectives We aimed to compare the effects of nutrient-enriched formula with standard term formula on rate of body weight gain of late preterm infants appropriately grown for gestational age. Study design A multi-center, randomized, controlled trial. Late preterm infants (34-37 weeks' gestation), with weight appropriate for gestational age (AGA), were randomized to nutrient enriched formula (NEF) with increased calories (22 kcal/30 ml) from protein, added bovine milk fat globule membrane, vitamin D and butyrate or standard term formula 20 kcal/30 ml (STF). Breastfed term infants were enrolled as an observational reference group (BFR). Primary outcome was rate of body weight gain from enrollment to 120 days corrected age (d/CA). Planned sample size was 100 infants per group. Secondary outcomes included body composition, weight, head circumference and length gain, and medically confirmed adverse events to 365 d/CA. Results The trial was terminated early due to recruitment challenges and sample size was substantially reduced. 40 infants were randomized to NEF (n = 22) and STF (n = 18). 39 infants were enrolled in the BFR group. At 120 d/CA there was no evidence of a difference in weight gain between randomized groups (mean difference 1.77 g/day, 95% CI, -1.63 to 5.18, P = 0.31). Secondary outcomes showed a significant reduction in risk of infectious illness in the NEF group at 120 d/CA [relative risk 0.37 (95% CI, 0.16-0.85), P = 0.02]. Conclusion We saw no difference in rate of body weight gain between AGA late preterm infants fed NEF compared to STF. Results should be interpreted with caution due to small sample size. Clinical Trial Registration The Australia New Zealand Clinical Trials Registry (ACTRN 12618000092291). "mailto:maria.makrides@sahmri.com" maria.makrides@sahmri.com.
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Affiliation(s)
- Karen P. Best
- Women and Kids Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia
| | - Lisa N. Yelland
- Women and Kids Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- School of Public Health, The University of Adelaide, Adelaide, SA, Australia
| | - Carmel T. Collins
- Women and Kids Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia
| | - Andrew J. McPhee
- Women and Kids Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
| | - Geraint B. Rogers
- Lifelong Health Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Infection and Immunity, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia
| | - Jocelyn Choo
- Lifelong Health Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Infection and Immunity, Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia
| | - Robert A. Gibson
- Women and Kids Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Adelaide, SA, Australia
| | - Teresa Murguia-Peniche
- School of Medicine, Indiana University, Evansville, IN, United States
- Medical Sciences, Mead Johnson Nutrition|Reckitt, Evansville, IN, United States
| | - Jojy Varghese
- Department of Neonatology, Lyell McEwin Hospital, Adelaide, SA, Australia
| | - Timothy R. Cooper
- Medical Sciences, Mead Johnson Nutrition|Reckitt, Evansville, IN, United States
| | - Maria Makrides
- Women and Kids Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia
- Correspondence: Maria Makrides
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11
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Nasogastric enteral feeding tubes modulate preterm colonization in early life. Pediatr Res 2022; 92:838-847. [PMID: 34845351 DOI: 10.1038/s41390-021-01852-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 10/04/2021] [Accepted: 10/28/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Preterm infants are generally fed through nasogastric enteral feeding tubes (NEFTs). The aim of this work was to evaluate the role of NEFTs in the initial colonization of the preterm gut and its evolution within the first 2 weeks after birth. METHODS For this purpose, fecal and NEFT-derived samples from 30 preterm infants hospitalized in a neonatal intensive care unit (NICU) were collected from birth to the second week of life. Samples were cultivated in ten culture media, including three for the isolation of antibiotic-resistant microorganisms. RESULTS Isolates (561) were identified by 16S ribosomal RNA gene sequencing. Although the first NEFTs inserted into the neonates after birth were rarely colonized, analysis of NEFTs and fecal samples over time revealed a significant increase in bacterial abundance, diversity, and detection frequency. Results showed a parallel colonization between time-matched NEFTs and fecal samples, suggesting an ongoing bidirectional transfer of bacteria from the neonatal gut to the NEFTs and vice versa. CONCLUSIONS In short-term hospitalization, length is by far the determinant factor for the early colonization of preterm infants. As NEFT populations reflect the bacterial populations that are colonizing the preterm in a precise moment, their knowledge could be useful to prevent the dissemination of antibiotic-resistant strains. IMPACT The hospital environment modulates preterm colonization immediately after birth. The colonization of preterm feces and NEFTs occurs in parallel. There is an ongoing bidirectional transfer of microorganisms from the neonatal gut to the NEFTs and vice versa. Bacterial communities inside NEFTs could act as reservoirs of antibiotic resistance genes. NEFT populations reflect the bacteria that are colonizing the preterm at a precise moment.
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12
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Merana GR, Dwyer LR, Dhariwala MO, Weckel A, Gonzalez JR, Okoro JN, Cohen JN, Tamaki CM, Han J, Tasoff P, Palacios-Calderon Y, Ha CWY, Lynch SV, Segre JA, Kong HH, Kattah MG, Ma A, Scharschmidt TC. Intestinal inflammation alters the antigen-specific immune response to a skin commensal. Cell Rep 2022; 39:110891. [PMID: 35649365 PMCID: PMC9248974 DOI: 10.1016/j.celrep.2022.110891] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 04/08/2022] [Accepted: 05/05/2022] [Indexed: 12/13/2022] Open
Abstract
Resident microbes in skin and gut predominantly impact local immune cell function during homeostasis. However, colitis-associated neutrophilic skin disorders suggest possible breakdown of this compartmentalization with disease. Using a model wherein neonatal skin colonization by Staphylococcus epidermidis facilitates generation of commensal-specific tolerance and CD4+ regulatory T cells (Tregs), we ask whether this response is perturbed by gut inflammation. Chemically induced colitis is accompanied by intestinal expansion of S. epidermidis and reduces gut-draining lymph node (dLN) commensal-specific Tregs. It also results in reduced commensal-specific Tregs in skin and skin-dLNs and increased skin neutrophils. Increased CD4+ circulation between gut and skin dLN suggests that the altered cutaneous response is initiated in the colon, and resistance to colitis-induced effects in Cd4creIl1r1fl/fl mice implicate interleukin (IL)-1 in mediating the altered commensal-specific response. These findings provide mechanistic insight into observed connections between inflammatory skin and intestinal diseases.
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Affiliation(s)
- Geil R Merana
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA; Biomedical Sciences Program, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Laura R Dwyer
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA; Biomedical Sciences Program, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Miqdad O Dhariwala
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Antonin Weckel
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jeanmarie R Gonzalez
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA; Biomedical Sciences Program, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Joy N Okoro
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jarish N Cohen
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA; Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Courtney M Tamaki
- Parnassus Flow Cytometry CoLab, University of California, San Francisco, San Francisco, 94143, USA
| | - Jungmin Han
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Preston Tasoff
- Benioff Center for Microbiome Medicine, Department of Medicine, University of California, San Francisco, CA 94143, USA
| | | | - Connie W Y Ha
- Benioff Center for Microbiome Medicine, Department of Medicine, University of California, San Francisco, CA 94143, USA
| | - Susan V Lynch
- Benioff Center for Microbiome Medicine, Department of Medicine, University of California, San Francisco, CA 94143, USA; Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Julia A Segre
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Heidi H Kong
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Michael G Kattah
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Averil Ma
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Tiffany C Scharschmidt
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA.
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13
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Gómez-Torres N, Sánchez-García L, Castro I, Arroyo R, Cabañas F, González-Sánchez R, López-Azorín M, Moral-Pumarega MT, Escuder-Vieco D, Cabañes-Alonso E, Rodríguez JM, Alba C, Pellicer A. Metataxonomic Analysis of Milk Samples From SARS-CoV-2-Positive and SARS-CoV-2-Negative Women. Front Nutr 2022; 9:853576. [PMID: 35369105 PMCID: PMC8971750 DOI: 10.3389/fnut.2022.853576] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 02/24/2022] [Indexed: 12/12/2022] Open
Abstract
Objective To assess the impact of SARS-CoV-2 viral infection on the metataxonomic profile and its evolution during the first month of lactation. Methods Milk samples from 37 women with full-term pregnancies and mild SARS-CoV-2 infection and from 63 controls, collected in the first and fifth postpartum weeks, have been analyzed. SARS-CoV-2 RNA was assessed by reverse transcription polymerase chain reaction (RT-PCR) both in cases and controls. After DNA extraction, the V3-V4 hypervariable region of the gene 16S rRNA was amplified and sequenced using the MiSeq system of Illumina. Data were submitted for statistical and bioinformatics analyses after quality control. Results All the 1st week and 5th week postpartum milk samples were negative for SARS-CoV-2 RNA. Alpha diversity showed no differences between milk samples from the study and control group, and this condition was maintained along the observation time. Analysis of the beta-diversity also indicated that the study and control groups did not show distinct bacterial profiles. Staphyloccus and Streptococcus were the most abundant genera and the only ones that were detected in all the milk samples provided. Disease state (symptomatic or asymptomatic infection) did not affect the metataxonomic profile in breast milk. Conclusion These results support that in the non-severe SARS-CoV-2 pregnant woman infection the structure of the bacterial population is preserved and does not negatively impact on the human milk microbiota.
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Affiliation(s)
- Natalia Gómez-Torres
- Department of Nutrition and Food Science, Complutense University of Madrid, Madrid, Spain
| | - Laura Sánchez-García
- Department of Neonatology, Biomedical Research Foundation-IDIPAZ, La Paz University Hospital, Madrid, Spain
- *Correspondence: Laura Sánchez-García,
| | - Irma Castro
- Department of Nutrition and Food Science, Complutense University of Madrid, Madrid, Spain
| | - Rebeca Arroyo
- Department of Nutrition and Food Science, Complutense University of Madrid, Madrid, Spain
| | - Fernando Cabañas
- Department of Neonatology, Quirónsalud Madrid University Hospital and Quirónsalud San José Hospital, Biomedical Research Foundation-IDIPAZ, La Paz University Hospital, Madrid, Spain
| | - Raquel González-Sánchez
- Department of Neonatology, Quirónsalud Madrid University Hospital and Quiroónsalud San José Hospital, Madrid, Spain
| | - Manuela López-Azorín
- Department of Neonatology, Quirónsalud Madrid University Hospital and Quiroónsalud San José Hospital, Madrid, Spain
| | | | | | - Esther Cabañes-Alonso
- Department of Neonatology, Regional Human Milk Bank, 12 de Octubre University Hospital, Madrid, Spain
| | - Juan Miguel Rodríguez
- Department of Nutrition and Food Science, Complutense University of Madrid, Madrid, Spain
| | - Claudio Alba
- Department of Nutrition and Food Science, Complutense University of Madrid, Madrid, Spain
- Claudio Alba,
| | - Adelina Pellicer
- Department of Neonatology, Biomedical Research Foundation-IDIPAZ, La Paz University Hospital, Madrid, Spain
- *Correspondence: Laura Sánchez-García,
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14
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Zhang K, Jin M, Yang D, Shen Z, Liu W, Yin J, Yang Z, Wang H, Shi D, Yang J, Li H, Chen Y, Gao Z, Qiu Z, Shi H, Li JW. Antibiotic resistance genes in gut of breast-fed neonates born by caesarean section originate from breast milk and hospital ward air. BMC Microbiol 2022; 22:36. [PMID: 35093006 PMCID: PMC8800334 DOI: 10.1186/s12866-022-02447-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 01/10/2022] [Indexed: 11/10/2022] Open
Abstract
AbstractThe human gut is a reservoir of antibiotic resistance genes (ARGs). Even in the absence of antibiotics, ARGs are present in large quantities in faeces of adults, children and even newborns. However, where and when ARGs are acquired remains unclear, as does the types of ARGs acquired. Herein, we recruited 82 pairs of women and their caesarean section newborns. Conventional culture methods and quantitative PCR were employed to detect nine species and six ARG types in meconia, faeces from 3-day-old newborns, amniotic fluid, colostrum, and hospital ward air samples. Furthermore, ARG transfer was explored by tracking Staphylococcus epidermidis isolated from faeces of 3-day-old newborns, colostrum and ward air samples using multi-locus sequence typing (MLST). No ARGs or microorganisms were detected in meconia or amniotic fluid. One or more ARGs were detected in 90.2% of faeces from 3-day-old newborns, and the mecA gene exhibited the highest detection rate (45.1%). ARGs were detected in 85.4% of colostra consistent with ARGs in faeces from 3-day-old newborns. Some ARGs were detected in ward air, and might also be a source of ARGs in neonatal faeces. Isolation of S. epidermidis from neonatal faeces was consistent with antibiotic resistance and gene profiles for colostrum samples. Traceability analysis of S. epidermidis showed that ARGs in neonatal faeces mainly originated from colostrum, and partly from ward air. After birth, neonates born by caesarean section obtain a variety of ARGs mainly from colostrum, and partly from ward air.
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15
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Duale A, Singh P, Al Khodor S. Breast Milk: A Meal Worth Having. Front Nutr 2022; 8:800927. [PMID: 35155521 PMCID: PMC8826470 DOI: 10.3389/fnut.2021.800927] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 12/20/2021] [Indexed: 12/11/2022] Open
Abstract
A mother is gifted with breast milk, the natural source of nutrition for her infant. In addition to the wealth of macro and micro-nutrients, human milk also contains many microorganisms, few of which originate from the mother, while others are acquired from the mouth of the infant and the surroundings. Among these microbes, the most commonly residing bacteria are Staphylococci, Streptococci, Lactobacilli and Bifidobacteria. These microorganisms initiate and help the development of the milk microbiota as well as the microbiota of the gastrointestinal tract in infants, and contribute to developing immune regulatory factors such as cytokines, growth factors, lactoferrin among others. These factors play an important role in reducing the risk of developing chronic diseases like type 2 diabetes, asthma and others later in life. In this review, we will summarize the known benefits of breastfeeding and highlight the role of the breast milk microbiota and its cross-talk with the immune system in breastfed babies during the early years of life.
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Affiliation(s)
- Anoud Duale
- Division of Maternal and Child Health, Department of Translational Medicine, Research Branch, Sidra Medicine, Doha, Qatar
| | - Parul Singh
- Division of Maternal and Child Health, Department of Translational Medicine, Research Branch, Sidra Medicine, Doha, Qatar
- College of Health and Life Sciences, Hamad Bin Khalifa University, Ar-Rayyan, Qatar
| | - Souhaila Al Khodor
- Division of Maternal and Child Health, Department of Translational Medicine, Research Branch, Sidra Medicine, Doha, Qatar
- *Correspondence: Souhaila Al Khodor
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16
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Interactions between human milk oligosaccharides, microbiota and immune factors in milk of women with and without mastitis. Sci Rep 2022; 12:1367. [PMID: 35079053 PMCID: PMC8789856 DOI: 10.1038/s41598-022-05250-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 12/20/2021] [Indexed: 12/21/2022] Open
Abstract
Lactational mastitis is an excellent target to study possible interactions between HMOs, immune factors and milk microbiota due to the infectious and inflammatory nature of this condition. In this work, microbiological, immunological and HMO profiles of milk samples from women with (MW) or without (HW) mastitis were compared. Secretor status in women (based on HMO profile) was not associated to mastitis. DFLNH, LNFP II and LSTb concentrations in milk were higher in samples from HW than from MW among Secretor women. Milk from HW was characterized by a low bacterial load (dominated by Staphylococcus epidermidis and streptococci), high prevalence of IL10 and IL13, and low sialylated HMO concentration. In contrast, high levels of staphylococci, streptococci, IFNγ and IL12 characterized milk from MW. A comparison between subacute (SAM) and acute (AM) mastitis cases revealed differences related to the etiological agent (S. epidermidis in SAM; Staphylococcus aureus in AM), milk immunological profile (high content of IL10 and IL13 in SAM and IL2 in AM) and milk HMOs profile (high content of 3FL in SAM and of LNT, LNnT, and LSTc in AM). These results suggest that microbiological, immunological and HMOs profiles of milk are related to mammary health of women.
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17
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Antibiotic treatments to mothers during the perinatal period leaving hidden trouble on infants. Eur J Pediatr 2022; 181:3459-3471. [PMID: 35680662 PMCID: PMC9395442 DOI: 10.1007/s00431-022-04516-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/31/2022] [Indexed: 12/04/2022]
Abstract
UNLABELLED Antibiotic application during the perinatal period is unavoidable in the clinic, but the potential effects on mothers and infants remain unknown. Herein, 25 breast milk samples from mothers who received cefuroxime (CXM) or CXM + cefoxitin (CFX) treatments and fecal samples from their infants were collected to investigate the undesirable effects of antibiotics on the microbiota of mothers and neonates. Furthermore, five fecal samples of infants, whose mothers had antibiotic treatments, were collected at a 6-month postpartum follow-up visit to evaluate the long-term effects on infants' gut microbiota. Moreover, the relative abundance of antibiotic resistance genes (ARGs) in fecal samples was compared to investigate the transfer of ARGs in the infant gut microbiota. The results indicated that the antibiotic treatments had no influence on the microbiota of breast milk. The dominant bacterial phyla in the fecal samples changed to Firmicutes and Proteobacteria after antibiotic treatments, while the bacterial community showed a recuperative trend at the follow-up visits. In addition, the abundance of ARGs in the infant gut microbiota demonstrated a declining trend in the CXM- and CXM + CFX-treated groups, while ARG abundance presented a significant increasing trend after a 6-month recovery period. CONCLUSION Antibiotic treatments for mothers during the perinatal period disturb the gut microbiota in neonates. The infants' gut microbiota would partly return to their initial state after rehabilitation, but the transfer of ARGs would leave the hidden trouble of antibiotic resistance. Overall, the data presented here can help to guide the scientific use of antibiotics during the perinatal period and provide potential approaches to mitigate the negative consequences. WHAT IS KNOWN • Antibiotic application during the perinatal period is unavoidable in the clinic. • Misuse of antibiotics can cause various unintended consequences, especially for antibiotic resistance. WHAT IS NEW • Antibiotic treatments had no influence on the microbiota of breast milk but greatly disturbed the gut microbiota composition in infants. • The gut microbiota in infants would partly return to its initial state after rehabilitation but the transfer of ARGs would leave the hidden trouble of antibiotic resistance.
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18
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Daliry A, Pereira ENGDS. Role of Maternal Microbiota and Nutrition in Early-Life Neurodevelopmental Disorders. Nutrients 2021; 13:nu13103533. [PMID: 34684534 PMCID: PMC8540774 DOI: 10.3390/nu13103533] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/14/2021] [Accepted: 08/24/2021] [Indexed: 02/07/2023] Open
Abstract
The rise in the prevalence of obesity and other related metabolic diseases has been paralleled by an increase in the frequency of neurodevelopmental problems, which has raised the likelihood of a link between these two phenomena. In this scenario, maternal microbiota is a possible linking mechanistic pathway. According to the “Developmental Origins of Health and Disease” paradigm, environmental exposures (in utero and early life) can permanently alter the body’s structure, physiology, and metabolism, increasing illness risk and/or speeding up disease progression in offspring, adults, and even generations. Nutritional exposure during early developmental stages may induce susceptibility to the later development of human diseases via interactions in the microbiome, including alterations in brain function and behavior of offspring, as explained by the gut–brain axis theory. This review provides an overview of the implications of maternal nutrition on neurodevelopmental disorders and the establishment and maturation of gut microbiota in the offspring.
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19
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Gao Y, Nanan R, Macia L, Tan J, Sominsky L, Quinn TP, O'Hely M, Ponsonby AL, Tang ML, Collier F, Strickland DH, Dhar P, Brix S, Phipps S, Sly PD, Ranganathan S, Stokholm J, Kristiansen K, Gray L, Vuillermin P. The maternal gut microbiome during pregnancy and offspring allergy and asthma. J Allergy Clin Immunol 2021; 148:669-678. [PMID: 34310928 DOI: 10.1016/j.jaci.2021.07.011] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/19/2021] [Accepted: 07/19/2021] [Indexed: 10/20/2022]
Abstract
Environmental exposures during pregnancy that alter both the maternal gut microbiome and the infant's risk of allergic disease and asthma include a traditional farm environment and consumption of unpasteurized cow's milk, antibiotic use, dietary fiber and psychosocial stress. Multiple mechanisms acting in concert may underpin these associations and prime the infant to acquire immune competence and homeostasis following exposure to the extrauterine environment. Cellular and metabolic products of the maternal gut microbiome can promote the expression of microbial pattern recognition receptors, as well as thymic and bone marrow hematopoiesis relevant to regulatory immunity. At birth, transmission of maternally derived bacteria likely leverages this in utero programming to accelerate postnatal transition from a Th2 to Th1 and Th17 dominant immune phenotypes and maturation of regulatory immune mechanisms, which in turn reduce the child's risk of allergic disease and asthma. Although our understanding of these phenomena is rapidly evolving, the field is relatively nascent, and we are yet to translate existing knowledge into interventions that substantially reduce disease risk in humans. Here we review evidence that the maternal gut microbiome impacts the offspring's risk of allergic disease and asthma, discuss challenges and future directions for the field, and propose the hypothesis that maternal carriage of Prevotella copri during pregnancy decreases the offspring's risk of allergic disease via production of succinate which in turn promotes bone marrow myelopoiesis of dendritic cell precursors in the fetus.
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Affiliation(s)
- Yuan Gao
- Institute for Physical and Mental Health and Clinical Transformation, Deakin University, Geelong, Australia; Child Health Research Unit, Barwon Health, Geelong, Australia; Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Ralph Nanan
- The Charles Perkins Center, the University of Sydney, Sydney, Australia
| | - Laurence Macia
- The Charles Perkins Center, the University of Sydney, Sydney, Australia; School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Jian Tan
- The Charles Perkins Center, the University of Sydney, Sydney, Australia; School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Luba Sominsky
- Institute for Physical and Mental Health and Clinical Transformation, Deakin University, Geelong, Australia; Child Health Research Unit, Barwon Health, Geelong, Australia
| | - Thomas P Quinn
- Applied Artificial Intelligence Institute, Deakin University, Geelong, Australia
| | - Martin O'Hely
- Institute for Physical and Mental Health and Clinical Transformation, Deakin University, Geelong, Australia; Murdoch Children's Research Institute, Melbourne, Australia
| | - Anne-Louise Ponsonby
- The Florey Institute, Melbourne, Australia; Murdoch Children's Research Institute, Melbourne, Australia; University of Melbourne, Melbourne, Australia
| | - Mimi Lk Tang
- Murdoch Children's Research Institute, Melbourne, Australia; University of Melbourne, Melbourne, Australia; Royal Children's Hospital, Melbourne, Australia
| | - Fiona Collier
- Institute for Physical and Mental Health and Clinical Transformation, Deakin University, Geelong, Australia
| | | | - Poshmaal Dhar
- Institute for Physical and Mental Health and Clinical Transformation, Deakin University, Geelong, Australia
| | - Susanne Brix
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Simon Phipps
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia; School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Queensland, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, Queensland, Australia
| | - Peter D Sly
- Australian Infectious Diseases Research Centre, The University of Queensland, Queensland, Australia; Children's Health and Environment Program, Child Health Research Centre, The University of Queensland, Australia
| | - Sarath Ranganathan
- Murdoch Children's Research Institute, Melbourne, Australia; University of Melbourne, Melbourne, Australia; Royal Children's Hospital, Melbourne, Australia
| | - Jakob Stokholm
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, 2820 Copenhagen, Denmark; Department of Pediatrics, Slagelse Hospital, 4200 Slagelse, Denmark
| | - Karsten Kristiansen
- BGI-Shenzhen, Shenzhen, China; China National Genebank, Shenzhen, China; Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Lawrence Gray
- Institute for Physical and Mental Health and Clinical Transformation, Deakin University, Geelong, Australia; Child Health Research Unit, Barwon Health, Geelong, Australia.
| | - Peter Vuillermin
- Institute for Physical and Mental Health and Clinical Transformation, Deakin University, Geelong, Australia; Child Health Research Unit, Barwon Health, Geelong, Australia.
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20
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Levels of Predominant Intestinal Microorganisms in 1 Month-Old Full-Term Babies and Weight Gain during the First Year of Life. Nutrients 2021; 13:nu13072412. [PMID: 34371922 PMCID: PMC8308764 DOI: 10.3390/nu13072412] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/07/2021] [Accepted: 07/13/2021] [Indexed: 12/14/2022] Open
Abstract
The early life gut microbiota has been reported to be involved in neonatal weight gain and later infant growth. Therefore, this early microbiota may constitute a target for the promotion of healthy neonatal growth and development with potential consequences for later life. Unfortunately, we are still far from understanding the association between neonatal microbiota and weight gain and growth. In this context, we evaluated the relationship between early microbiota and weight in a cohort of full-term infants. The absolute levels of specific fecal microorganisms were determined in 88 vaginally delivered and 36 C-section-delivered full-term newborns at 1 month of age and their growth up to 12 months of age. We observed statistically significant associations between the levels of some early life gut microbes and infant weight gain during the first year of life. Classifying the infants into tertiles according to their Staphylococcus levels at 1 month of age allowed us to observe a significantly lower weight at 12 months of life in the C-section-delivered infants from the highest tertile. Univariate and multivariate models pointed out associations between the levels of some fecal microorganisms at 1 month of age and weight gain at 6 and 12 months. Interestingly, these associations were different in vaginally and C-section-delivered babies. A significant direct association between Staphylococcus and weight gain at 1 month of life was observed in vaginally delivered babies, whereas in C-section-delivered infants, lower Bacteroides levels at 1 month were associated with higher later weight gain (at 6 and 12 months). Our results indicate an association between the gut microbiota and weight gain in early life and highlight potential microbial predictors for later weight gain.
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21
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Amenyogbe N, Adu-Gyasi D, Enuameh Y, Asante KP, Konadu DG, Kaali S, Dosoo D, Panigrahi P, Kollmann TR, Mohn WW, Owusu-Agyei S. Bacterial and Fungal Gut Community Dynamics Over the First 5 Years of Life in Predominantly Rural Communities in Ghana. Front Microbiol 2021; 12:664407. [PMID: 34295315 PMCID: PMC8290483 DOI: 10.3389/fmicb.2021.664407] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/26/2021] [Indexed: 01/09/2023] Open
Abstract
Background Bacterial and fungal microbiotas are increasingly recognized as important in health and disease starting early in life. However, microbiota composition has not yet been investigated in most rural, low-resource settings, and in such settings, bacterial and fungal microbiotas have not been compared. Thus, we applied 16S and ITS2 amplicon sequencing, respectively, to investigate bacterial and fungal fecal microbiotas in rural Ghanaian children cross-sectionally from birth to 5 years of age. Corresponding maternal fecal and breast milk microbiotas were additionally investigated. Results While bacterial communities differed systematically across the age spectrum in composition and diversity, the same was not observed for the fungal microbiota. We also identified a novel and dramatic change in the maternal postpartum microbiota. This change included much higher abundance of Escherichia coli and much lower abundance of Prevotella in the first vs. fourth week postpartum. While infants shared more bacterial taxa with their mother’s stool and breast milk than with those of unrelated mothers, there were far fewer shared fungal taxa. Conclusion Given the known ability of commensal fungi to influence host health, the distinct pattern of their acquisition likely has important health consequences. Similarly, the dynamics of mothers’ bacterial microbiotas around the time of birth may have important consequences for their children’s health. Both topics require further study.
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Affiliation(s)
- Nelly Amenyogbe
- Department of Experimental Medicine, University of British Columbia, Vancouver, BC, Canada.,Systems Vaccinology, Telethon Kids Institute, Perth, WA, Australia
| | - Dennis Adu-Gyasi
- Research and Development Division, Ghana Health Service, Kintampo Health Research Centre, Kintampo North, Ghana
| | - Yeetey Enuameh
- Research and Development Division, Ghana Health Service, Kintampo Health Research Centre, Kintampo North, Ghana.,Department of Epidemiology and Biostatistics, School of Public Health, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Kwaku Poku Asante
- Research and Development Division, Ghana Health Service, Kintampo Health Research Centre, Kintampo North, Ghana
| | - Dennis Gyasi Konadu
- Research and Development Division, Ghana Health Service, Kintampo Health Research Centre, Kintampo North, Ghana
| | - Seyram Kaali
- Research and Development Division, Ghana Health Service, Kintampo Health Research Centre, Kintampo North, Ghana
| | - David Dosoo
- Research and Development Division, Ghana Health Service, Kintampo Health Research Centre, Kintampo North, Ghana
| | - Pinaki Panigrahi
- Pediatrics Academic Department, Georgetown University Medical Centre, Washington, DC, United States
| | - Tobias R Kollmann
- Systems Vaccinology, Telethon Kids Institute, Perth, WA, Australia.,Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - William W Mohn
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada
| | - Seth Owusu-Agyei
- Research and Development Division, Ghana Health Service, Kintampo Health Research Centre, Kintampo North, Ghana.,Institute of Health Research, University of Health and Allied Sciences, Ho, Ghana
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22
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Abdi M, Lohrasbi V, Asadi A, Esghaei M, Jazi FM, Rohani M, Talebi M. Interesting probiotic traits of mother's milk Lactobacillus isolates; from bacteriocin to inflammatory bowel disease improvement. Microb Pathog 2021; 158:104998. [PMID: 34044041 DOI: 10.1016/j.micpath.2021.104998] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 05/14/2021] [Accepted: 05/17/2021] [Indexed: 12/26/2022]
Abstract
AIMS AND BACKGROUND Lactobacillus spp. are an important element in breast milk. This component has a beneficial effect on the composition of the intestinal microflora and the intestinal immune system. The aim of this study was to isolate and identify Lactobacillus strains in breast milk and evaluate some of their probiotic properties, such as presence of bacteriocin genes, adhesion to HT-29 cell line, competition with enteropathogens in cell culture, and effect on serum level of lipids and digestive enzymes, and mice model of inflammatory bowel disease (IBD). MATERIALS AND METHODS A total of 323 lactic acid bacteria (LAB) were isolated from breast milk samples of healthy mothers with the age ranges from 21 to 45 years old. These isolates were subjected to phenotypic and molecular experiments. The frequency of bacteriocin genes was determined by polymerase chain reaction (PCR). Adhesion of Lactobacillus isolates to HT-29 cells was measured based on the number of attached bacterial cells in 20 fields of the light microscopy. Competition test was done by colony count and real-time PCR procedures. Five strongly adhesive Lactobacillus strains were selected and administered orally to the treatment groups. After 8 days, the serum level of digestive enzymes and improvement in induced IBD, and after 14 days, the serum level of lipids (triglycerides, total cholesterol, HDL, and LDL) in treated mice were surveyed compared to the control groups. RESULTS Based on the phenotypic and molecular experiments, L. casei, L. plantarum, L. rhamnosus, and L. acidophilus strains were isolated and identified in the breast milk samples. The highest frequency of bacteriocin genes belonged to Plantaricin B (100%), followed by Plantaricin D (84.7%), Plantaricin G (84.7%), and Plantaricin EF (54.3%). Also, 71.8% of the isolates were strongly adhesive, 21.8% were non-adhesive, and 6.4% were adhesive. Lactobacillus strains had a significant effect on the displacement of enteropathogens. The in vitro cholesterol-removing ability of L. casei (L1), L. casei (L2), L. casei (L3), L. plantarum (L4), and L. rhamnosus (L5) was 3.5, 31.5, 21.3, 18.7, and 27.3%, respectively. The serum level of total cholesterol in the L. plantarum (L4) group as well as LDL in the L. casei (L3) (p = .0108) and L. rhamnosus (L5) (p = .0206) groups decreased significantly compared to the control group. The serum level of lipase increased in all the treatment groups compared to the control group, which was significant in the L. plantarum (L4) group (p = .0390). Disease activity index (DAI) scores were improved significantly in L. casei (L3) group compared to the IBD control group (p < .0001). CONCLUSION It could be concluded that lactobacilli strains isolated from the breast milk samples had good probiotic properties, such as presence of bacteriocin genes, attaching to enterocyte-like HT-29 cells, competing with intestinal pathogens, lowering cholesterol, and improving IBD. Thus, after further studies, they could be considered as probiotic strains.
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Affiliation(s)
- Milad Abdi
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Vahid Lohrasbi
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Arezoo Asadi
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Esghaei
- Department of Virology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Faramarz Masjedian Jazi
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran; Microbial Biotechnology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Rohani
- Department of Microbiology, Pasteur Institute of Iran, Tehran, Iran
| | - Malihe Talebi
- Department of Microbiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran; Microbial Biotechnology Research Center, Iran University of Medical Sciences, Tehran, Iran.
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23
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Stinson LF, Sindi ASM, Cheema AS, Lai CT, Mühlhäusler BS, Wlodek ME, Payne MS, Geddes DT. The human milk microbiome: who, what, when, where, why, and how? Nutr Rev 2021; 79:529-543. [PMID: 32443154 DOI: 10.1093/nutrit/nuaa029] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Human milk (HM) contains an incredible array of microorganisms. These likely contribute to the seeding of the infant gastrointestinal microbiome, thereby influencing infant immune and metabolic development and later-life health. Given the importance of the HM microbiota in this context, there has been an increase in research efforts to characterize this in different populations and in relation to different maternal and infant characteristics. However, despite a decade of intensive research, there remain several unanswered questions in this field. In this review, the "5 W+H" approach (who, what, when, where, why, and how) is used to comprehensively describe the composition, function, and origin of the HM microbiome. Here, existing evidence will be drawn together and critically appraised to highlight avenues for further research, both basic and applied. Perhaps the most interesting of these is the potential to modulate the HM microbiome using pre/probiotics or dietary interventions. Another exciting possibility is the personalization of donor milk for women with insufficient supply. By gaining a deeper understanding of the HM microbiome, opportunities to intervene to optimize infant and lifelong health may be identified.
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Affiliation(s)
- Lisa F Stinson
- School of Molecular Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Azhar S M Sindi
- Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, Western Australia, Australia
| | - Ali S Cheema
- School of Molecular Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Ching Tat Lai
- School of Molecular Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Beverly S Mühlhäusler
- CSIRO, Adelaide, South Australia, Australia, and School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, South Australia, Australia
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Matthew S Payne
- Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, Western Australia, Australia
| | - Donna T Geddes
- School of Molecular Sciences, The University of Western Australia, Perth, Western Australia, Australia
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24
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Moubareck CA. Human Milk Microbiota and Oligosaccharides: A Glimpse into Benefits, Diversity, and Correlations. Nutrients 2021; 13:1123. [PMID: 33805503 PMCID: PMC8067037 DOI: 10.3390/nu13041123] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/18/2021] [Accepted: 03/26/2021] [Indexed: 12/12/2022] Open
Abstract
Human milk represents a cornerstone for growth and development of infants, with extensive array of benefits. In addition to exceptionally nutritive and bioactive components, human milk encompasses a complex community of signature bacteria that helps establish infant gut microbiota, contributes to maturation of infant immune system, and competitively interferes with pathogens. Among bioactive constituents of milk, human milk oligosaccharides (HMOs) are particularly significant. These are non-digestible carbohydrates forming the third largest solid component in human milk. Valuable effects of HMOs include shaping intestinal microbiota, imparting antimicrobial effects, developing intestinal barrier, and modulating immune response. Moreover, recent investigations suggest correlations between HMOs and milk microbiota, with complex links possibly existing with environmental factors, genetics, geographical location, and other factors. In this review, and from a physiological and health implications perspective, milk benefits for newborns and mothers are highlighted. From a microbiological perspective, a focused insight into milk microbiota, including origins, diversity, benefits, and effect of maternal diet is presented. From a metabolic perspective, biochemical, physiological, and genetic significance of HMOs, and their probable relations to milk microbiota, are addressed. Ongoing research into mechanistic processes through which the rich biological assets of milk promote development, shaping of microbiota, and immunity is tackled.
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Affiliation(s)
- Carole Ayoub Moubareck
- College of Natural and Health Sciences, Zayed University, Dubai 19282, United Arab Emirates
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25
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Pandya SP, Doshi H, Codipilly CN, Fireizen Y, Potak D, Schanler RJ. Bacterial stability with freezer storage of human milk. J Perinat Med 2021; 49:225-228. [PMID: 32915767 DOI: 10.1515/jpm-2020-0131] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 08/21/2020] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Human milk supports the development of a beneficial newborn intestinal microflora. We have shown previously that human milk had reduced bacteria but unchanged nutrient composition when stored at -20 °C for up to nine months. We suspected declining bacterial colony counts were manifestations of bacterial dormancy and not failure of survival. We investigated differences in selected bacterial colony counts (lactobacillus, bifidobacteria, staphylococcus, streptococcus and enterococcus) in human milk stored for 2 and 12 weeks at -20 °C in either manual or automatic defrost freezers and whether reduced bacterial counts at 12 weeks were the result of dormancy or failure of survival. METHODS Freshly expressed milk was obtained from mothers in the NICU, divided into aliquots and stored for 2 and 12 weeks at -20 °C in either automatic or manual defrost freezers. Subsequently, duplicate aliquots, one thawed and the other thawed and maintained at room temperature for 4 h, were plated to assess bacterial colony counts. RESULTS Significant declines in bacterial colony counts were seen from 2 to 12 weeks freezer storage for all bacteria. There were no differences in colony counts between freezer types. Once thawed, no further bacterial growth occurred. CONCLUSIONS Short-term freezer storage for 12 weeks resulted bacterial killing. Type of freezer used for storage did not have an impact on bacterial survival. It is unknown whether the paucity of important probiotic bacteria in stored human milk has adverse effects on infants.
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Affiliation(s)
- Shachee P Pandya
- Division of Neonatal-Perinatal Medicine, Cohen Children's Medical Center, Lilling Family Neonatal Research Lab, Feinstein Institutes for Medical Research, Zucker School of Medicine at Hofstra/Northwell, New Hyde Park, NY, USA
| | - Harshit Doshi
- Division of Neonatal-Perinatal Medicine, Cohen Children's Medical Center, Lilling Family Neonatal Research Lab, Feinstein Institutes for Medical Research, Zucker School of Medicine at Hofstra/Northwell, New Hyde Park, NY, USA
| | - Champa N Codipilly
- Division of Neonatal-Perinatal Medicine, Cohen Children's Medical Center, Lilling Family Neonatal Research Lab, Feinstein Institutes for Medical Research, Zucker School of Medicine at Hofstra/Northwell, New Hyde Park, NY, USA
| | - Yaron Fireizen
- Division of Neonatal-Perinatal Medicine, Cohen Children's Medical Center, Lilling Family Neonatal Research Lab, Feinstein Institutes for Medical Research, Zucker School of Medicine at Hofstra/Northwell, New Hyde Park, NY, USA
| | - Debra Potak
- Division of Neonatal-Perinatal Medicine, Cohen Children's Medical Center, Lilling Family Neonatal Research Lab, Feinstein Institutes for Medical Research, Zucker School of Medicine at Hofstra/Northwell, New Hyde Park, NY, USA
| | - Richard J Schanler
- Division of Neonatal-Perinatal Medicine, Cohen Children's Medical Center, Lilling Family Neonatal Research Lab, Feinstein Institutes for Medical Research, Zucker School of Medicine at Hofstra/Northwell, New Hyde Park, NY, USA
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26
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Coscia A, Bardanzellu F, Caboni E, Fanos V, Peroni DG. When a Neonate Is Born, So Is a Microbiota. Life (Basel) 2021; 11:life11020148. [PMID: 33669262 PMCID: PMC7920069 DOI: 10.3390/life11020148] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/09/2021] [Accepted: 02/11/2021] [Indexed: 02/06/2023] Open
Abstract
In recent years, the role of human microbiota as a short- and long-term health promoter and modulator has been affirmed and progressively strengthened. In the course of one’s life, each subject is colonized by a great number of bacteria, which constitute its specific and individual microbiota. Human bacterial colonization starts during fetal life, in opposition to the previous paradigm of the “sterile womb”. Placenta, amniotic fluid, cord blood and fetal tissues each have their own specific microbiota, influenced by maternal health and habits and having a decisive influence on pregnancy outcome and offspring outcome. The maternal microbiota, especially that colonizing the genital system, starts to influence the outcome of pregnancy already before conception, modulating fertility and the success rate of fertilization, even in the case of assisted reproduction techniques. During the perinatal period, neonatal microbiota seems influenced by delivery mode, drug administration and many other conditions. Special attention must be reserved for early neonatal nutrition, because breastfeeding allows the transmission of a specific and unique lactobiome able to modulate and positively affect the neonatal gut microbiota. Our narrative review aims to investigate the currently identified pre- and peri-natal factors influencing neonatal microbiota, before conception, during pregnancy, pre- and post-delivery, since the early microbiota influences the whole life of each subject.
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Affiliation(s)
- Alessandra Coscia
- Neonatology Unit, Department of Public Health and Pediatrics, Università degli Studi di Torino, 10124 Turin, Italy;
| | - Flaminia Bardanzellu
- Neonatal Intensive Care Unit, Department of Surgical Sciences, AOU and University of Cagliari, SS 554 km 4,500, 09042 Monserrato, Italy; (E.C.); (V.F.)
- Correspondence:
| | - Elisa Caboni
- Neonatal Intensive Care Unit, Department of Surgical Sciences, AOU and University of Cagliari, SS 554 km 4,500, 09042 Monserrato, Italy; (E.C.); (V.F.)
| | - Vassilios Fanos
- Neonatal Intensive Care Unit, Department of Surgical Sciences, AOU and University of Cagliari, SS 554 km 4,500, 09042 Monserrato, Italy; (E.C.); (V.F.)
| | - Diego Giampietro Peroni
- Clinical and Experimental Medicine Department, Section of Pediatrics, University of Pisa, Via Roma, 55, 56126 Pisa PI, Italy;
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27
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Lopez Leyva L, Brereton NJ, Koski KG. Emerging frontiers in human milk microbiome research and suggested primers for 16S rRNA gene analysis. Comput Struct Biotechnol J 2020; 19:121-133. [PMID: 33425245 PMCID: PMC7770459 DOI: 10.1016/j.csbj.2020.11.057] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/24/2020] [Accepted: 11/28/2020] [Indexed: 02/06/2023] Open
Abstract
Human milk is the ideal food for infants due to its unique nutritional and immune properties, and more recently human milk has also been recognized as an important source of bacteria for infants. However, a substantial amount of fundamental human milk microbiome information remains unclear, such as the origin, composition and function of the community and its members. There is emerging evidence to suggest that the diversity and composition of the milk microbiome might differ between lactation stages, due to maternal factors and diet, agrarian and urban lifestyles, and geographical location. The evolution of the methods used for studying milk microbiota, transitioning from culture dependent-approaches to include culture-independent approaches, has had an impact on findings and, in particular, primer selection within 16S rRNA gene barcoding studies have led to discrepancies in observed microbiota communities. Here, the current state-of-the-art is reviewed and emerging frontiers essential to improving our understanding of the human milk microbiome are considered.
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Affiliation(s)
- Lilian Lopez Leyva
- School of Human Nutrition, McGill University, Macdonald Stewart Building, 21111 Lakeshore Road, Ste-Anne de Bellevue, QC H9X 3V9, Canada
| | - Nicholas J.B. Brereton
- Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke St E, Montreal, QC H1X 2B2, Canada
| | - Kristine G. Koski
- School of Human Nutrition, McGill University, Macdonald Stewart Building, 21111 Lakeshore Road, Ste-Anne de Bellevue, QC H9X 3V9, Canada
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28
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Fernández L, Pannaraj PS, Rautava S, Rodríguez JM. The Microbiota of the Human Mammary Ecosystem. Front Cell Infect Microbiol 2020; 10:586667. [PMID: 33330129 PMCID: PMC7718026 DOI: 10.3389/fcimb.2020.586667] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/15/2020] [Indexed: 12/12/2022] Open
Abstract
Human milk contains a dynamic and complex site-specific microbiome, which is not assembled in an aleatory way, formed by organized microbial consortia and networks. Presence of some genera, such as Staphylococcus, Streptococcus, Corynebacterium, Cutibacterium (formerly known as Propionibacterium), Lactobacillus, Lactococcus and Bifidobacterium, has been detected by both culture-dependent and culture-independent approaches. DNA from some gut-associated strict anaerobes has also been repeatedly found and some studies have revealed the presence of cells and/or nucleic acids from viruses, archaea, fungi and protozoa in human milk. Colostrum and milk microbes are transmitted to the infant and, therefore, they are among the first colonizers of the human gut. Still, the significance of human milk microbes in infant gut colonization remains an open question. Clinical studies trying to elucidate the question are confounded by the profound impact of non-microbial human milk components to intestinal microecology. Modifications in the microbiota of human milk may have biological consequences for infant colonization, metabolism, immune and neuroendocrine development, and for mammary health. However, the factors driving differences in the composition of the human milk microbiome remain poorly known. In addition to colostrum and milk, breast tissue in lactating and non-lactating women may also contain a microbiota, with implications in the pathogenesis of breast cancer and in some of the adverse outcomes associated with breast implants. This and other open issues, such as the origin of the human milk microbiome, and the current limitations and future prospects are addressed in this review.
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Affiliation(s)
- Leónides Fernández
- Department of Galenic Pharmacy and Food Technology, Complutense University of Madrid, Madrid, Spain
| | - Pia S. Pannaraj
- Department of Pediatrics and Molecular Microbiology and Immunology, Keck School of Medicine and Children’s Hospital, Los Angeles, CA, United States
| | - Samuli Rautava
- University of Helsinki and Helsinki University Hospital, New Children’s Hospital, Pediatric Research Center, Helsinki, Finland
| | - Juan M. Rodríguez
- Department of Nutrition and Food Science, Complutense University of Madrid, Madrid, Spain
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29
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Effect of Sample Collection (Manual Expression vs. Pumping) and Skimming on the Microbial Profile of Human Milk Using Culture Techniques and Metataxonomic Analysis. Microorganisms 2020; 8:microorganisms8091278. [PMID: 32825795 PMCID: PMC7564974 DOI: 10.3390/microorganisms8091278] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/11/2020] [Accepted: 08/17/2020] [Indexed: 12/16/2022] Open
Abstract
Human milk microbiota is a unique bacterial community playing a relevant role in infant health, but its composition depends on different factors (woman health, lactation stage, and geographical lactation). However, information is lacking regarding some other factors that may affect the bacterial community of human milk. In this study we aimed to study the impact of the sample collection method and the skimming procedure using culture-dependent and culture-independent techniques to study the human milk microbial profile. One set of milk samples was provided by women (n = 10) in two consecutive days; half of the samples were collected the first day by manual expression and the other half on the second day by pumping. The rest of the participants (n = 17) provided milk samples that were fractionated by centrifugation; the bacterial profiles of whole milk and skimmed milk were compared by culture techniques in 10 milk samples, while those of whole milk, fat and skimmed milk were subjected to metataxonomic analysis in seven samples. Globally, the results obtained revealed high interindividual variability but that neither the use of single-use sterile devices to collect the sample nor the skimming procedure have a significant impact of the microbial profile of human samples.
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30
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Corona-Cervantes K, García-González I, Villalobos-Flores LE, Hernández-Quiroz F, Piña-Escobedo A, Hoyo-Vadillo C, Rangel-Calvillo MN, García-Mena J. Human milk microbiota associated with early colonization of the neonatal gut in Mexican newborns. PeerJ 2020; 8:e9205. [PMID: 32509465 PMCID: PMC7247532 DOI: 10.7717/peerj.9205] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 04/25/2020] [Indexed: 12/20/2022] Open
Abstract
Background Human milk microbiota plays a role in the bacterial colonization of the neonatal gut, which has important consequences in the health and development of the newborn. However, there are few studies about the vertical transfer of bacteria from mother to infant in Latin American populations. Methods We performed a cross-sectional study characterizing the bacterial diversity of 67 human milk-neonatal stool pairs by high-throughput sequencing of V3-16S rDNA libraries, to assess the effect of the human milk microbiota on the bacterial composition of the neonate's gut at early days. Results Human milk showed higher microbial diversity as compared to the neonatal stool. Members of the Staphylococcaceae and Sphingomonadaceae families were more prevalent in human milk, whereas the Pseudomonadaceae family, Clostridium and Bifidobacterium genera were in the neonatal stool. The delivery mode showed association with the neonatal gut microbiota diversity, but not with the human milk microbiota diversity; for instance, neonates born by C-section showed greater richness and diversity in stool microbiota than those born vaginally. We found 25 bacterial taxa shared by both ecosystems and 67.7% of bacteria found in neonate stool were predicted to originate from human milk. This study contributes to the knowledge of human milk and neonatal stool microbiota in healthy Mexican population and supports the idea of vertical mother-neonate transmission through exclusive breastfeeding.
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Affiliation(s)
- Karina Corona-Cervantes
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, CDMX, Mexico
| | - Igrid García-González
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, CDMX, Mexico
| | - Loan Edel Villalobos-Flores
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, CDMX, Mexico
| | - Fernando Hernández-Quiroz
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, CDMX, Mexico
| | - Alberto Piña-Escobedo
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, CDMX, Mexico
| | - Carlos Hoyo-Vadillo
- Departamento de Farmacología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, CDMX, Mexico
| | - Martín Noé Rangel-Calvillo
- Hospital General "Dr. José María Rodríguez", Instituto de Salud del Estado de México, Ecatepec de Morelos, Estado de Mexico, Mexico
| | - Jaime García-Mena
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, CDMX, Mexico
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31
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Kapourchali FR, Cresci GAM. Early-Life Gut Microbiome-The Importance of Maternal and Infant Factors in Its Establishment. Nutr Clin Pract 2020; 35:386-405. [PMID: 32329544 DOI: 10.1002/ncp.10490] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 03/10/2020] [Indexed: 12/17/2022] Open
Abstract
The early-life microbiome is gaining appreciation as a major influencer in human development and long-term health. Multiple factors are known to influence the initial colonization, development, and function of the neonatal gut microbiome. In addition, alterations in early-life gut microbial composition is associated with several chronic health conditions such as obesity, asthma, and allergies. In this review, we focus on both maternal and infant factors known to influence early-life gut colonization. Also reviewed is the important role of infant feeding, including evidence-based strategies for maternal and infant supplementation with the goal to protect and/or restore the infant gut microbiome.
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Affiliation(s)
| | - Gail A M Cresci
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, Ohio, USA.,Department of Pediatric Gastroenterology, Cleveland Clinic, Cleveland, Ohio, USA.,Center for Human Nutrition, Cleveland Clinic, Cleveland, Ohio, USA
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32
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Demmelmair H, Jiménez E, Collado MC, Salminen S, McGuire MK. Maternal and Perinatal Factors Associated with the Human Milk Microbiome. Curr Dev Nutr 2020; 4:nzaa027. [PMID: 32270132 PMCID: PMC7127925 DOI: 10.1093/cdn/nzaa027] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/12/2020] [Accepted: 02/26/2020] [Indexed: 12/13/2022] Open
Abstract
Microbes are present in human milk regardless of the mother's health. The origins of the milk microbiota likely include the mother's skin, infant's mouth, and transfer from the maternal gastrointestinal (GI) tract. Prominent bacterial taxa in human milk are Staphylococcus and Streptococcus, but many other genera are also found including anaerobic Lactobacillus, Bifidobacterium, and Bacteroides. The milk microbiome is highly variable and potentially influenced by geographic location, delivery mode, time postpartum, feeding mode, social networks, environment, maternal diet, and milk composition. Mastitis alters the milk microbiome, and the intake of Lactobacilli has shown potential for mastitis treatment and prevention. Although milk and infant fecal microbiomes are different, their variations appear to be related - suggesting that milk is an important contributor of early GI colonization. Nonetheless, nothing is known regarding whether the milk microbiome influences infant health. Further research and clinical interventions are needed to determine if changes in the microbiomes of human milk and infant formula/food impact health.
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Affiliation(s)
- Hans Demmelmair
- Dr. von Hauner Children´s Hospital, University of Munich Medical Center, Munich, Germany
| | - Esther Jiménez
- ProbiSearch SLU, Madrid, Spain
- Department of Nutrition, Food Science, and Technology, University Complutense, Madrid, Spain
| | - Maria Carmen Collado
- Institute of Agrochemistry and Food Technology, Spanish National Research Council, Valencia, Spain
- Functional Foods Forum, University of Turku, Turku, Finland
| | - Seppo Salminen
- Functional Foods Forum, University of Turku, Turku, Finland
| | - Michelle K McGuire
- Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, USA
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34
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Lactobacillus fermentum CECT5716 Supplementation in Rats during Pregnancy and Lactation Impacts Maternal and Offspring Lipid Profile, Immune System and Microbiota. Cells 2020; 9:cells9030575. [PMID: 32121244 PMCID: PMC7140451 DOI: 10.3390/cells9030575] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 12/12/2022] Open
Abstract
Probiotics have shown potential for their use in early life. This study aimed to investigate whether the administration of Lactobacillus fermentum CECT5716 during pregnancy and lactation periods impacts maternal and offspring plasma lipid profile, immune system and microbiota. Rats were supplemented with the probiotic during gestation and two weeks of lactation. After supplementation, although the microbiota composition was not affected, the probiotic strain was detected in all cecal contents of dams and in some of their pups. Dams showed reduced proportion of T cytotoxic cells in the mesenteric lymph nodes, modulation of intestinal cytokines (IL-10 and IL-12) and changes in plasma fatty acids (20:0, 22:0, 20:5 n-3, and 18:3 n-6). Pups showed changes in immunoglobulins (intestinal IgA and plasmatic IgG2a and IgG2c) and fatty acid profile (17:0, 22:0, and 18:2 n-6). Overall, Lactobacillus fermentum CECT5716 supplementation contributed to beneficially modulating the immune system of the mother and its offspring.
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Zimmermann P, Curtis N. Breast milk microbiota: A review of the factors that influence composition. J Infect 2020; 81:17-47. [PMID: 32035939 DOI: 10.1016/j.jinf.2020.01.023] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/29/2020] [Accepted: 01/30/2020] [Indexed: 01/31/2023]
Abstract
Breastfeeding is associated with considerable health benefits for infants. Aside from essential nutrients, immune cells and bioactive components, breast milk also contains a diverse range of microbes, which are important for maintaining mammary and infant health. In this review, we summarise studies that have investigated the composition of the breast milk microbiota and factors that might influence it. We identified 44 studies investigating 3105 breast milk samples from 2655 women. Several studies reported that the bacterial diversity is higher in breast milk than infant or maternal faeces. The maximum number of each bacterial taxonomic level detected per study was 58 phyla, 133 classes, 263 orders, 596 families, 590 genera, 1300 species and 3563 operational taxonomic units. Furthermore, fungal, archaeal, eukaryotic and viral DNA was also detected. The most frequently found genera were Staphylococcus, Streptococcus Lactobacillus, Pseudomonas, Bifidobacterium, Corynebacterium, Enterococcus, Acinetobacter, Rothia, Cutibacterium, Veillonella and Bacteroides. There was some evidence that gestational age, delivery mode, biological sex, parity, intrapartum antibiotics, lactation stage, diet, BMI, composition of breast milk, HIV infection, geographic location and collection/feeding method influence the composition of the breast milk microbiota. However, many studies were small and findings sometimes contradictory. Manipulating the microbiota by adding probiotics to breast milk or artificial milk offers an exciting avenue for future interventions to improve infant health.
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Affiliation(s)
- Petra Zimmermann
- Department of Paediatrics, Fribourg Hospital HFR and Faculty of Science and Medicine, University of Fribourg, Switzerland; Department of Paediatrics, The University of Melbourne, Parkville, Australia; Infectious Diseases Research Group, Murdoch Children's Research Institute, Parkville, Australia; Infectious Diseases Unit, The Royal Children's Hospital Melbourne, Parkville, Australia.
| | - Nigel Curtis
- Department of Paediatrics, The University of Melbourne, Parkville, Australia; Infectious Diseases Research Group, Murdoch Children's Research Institute, Parkville, Australia; Infectious Diseases Unit, The Royal Children's Hospital Melbourne, Parkville, Australia
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Staphylococcus epidermidis in feedings and feces of preterm neonates. PLoS One 2020; 15:e0227823. [PMID: 32012172 PMCID: PMC6996929 DOI: 10.1371/journal.pone.0227823] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Accepted: 12/30/2019] [Indexed: 11/25/2022] Open
Abstract
Staphylococcus epidermidis has emerged as the leading agent causing neonatal late-onset sepsis in preterm neonates; although the severity of the episodes caused by this species is often underestimated, it might exert relevant short- and long-term detrimental effects on neonatal outcomes. In this context, the objective of this study was to characterize a collection of S. epidermidis strains obtained from meconium and feces of preterm infants, and to assess the potential role of the enteral feeding tubes as potential reservoirs for this microorganism. A total of 26 preterm infants were enrolled in the study. Meconium and fecal samples were collected weekly during their first month of life (n = 92). Feeding samples were collected after their pass through the enteral feeding tubes (n = 84). S. epidermidis was present in the fecal samples of all the infants in, at least, one sampling time at concentrations ranging from 6.5 to 7.8 log10 CFU/g. Initially, 344 isolates were obtained and pulsed-field gel electrophoresis (PFGE) profiling allowed the reduction of the collection to 101 strains. Among them, multilocus sequence typing (MLST) profiling showed the presence of 32 different sequence types (ST). Globally, most of the STs to hospital-adapted high-risk clones and belonged to clonal complexes (CC) associated to the hospital environment, such as CC2. The virulence gene most commonly detected among the strains was altE. High resistance rates to macrolides and aminoglycosides were detected and 64% of the strains harboured the mecA gene, which was codified in SCCmec types. Our results indicates the existence of a complex and genetically diverse S. epidermidis population in the NICU environment. A better knowledge of S. epidermidis strains may help to devise strategies to avoid their conversion from symbiont to pathobiont microorganisms in the NICUs.
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Douglas CA, Ivey KL, Papanicolas LE, Best KP, Muhlhausler BS, Rogers GB. DNA extraction approaches substantially influence the assessment of the human breast milk microbiome. Sci Rep 2020; 10:123. [PMID: 31924794 PMCID: PMC6954186 DOI: 10.1038/s41598-019-55568-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 11/20/2019] [Indexed: 01/21/2023] Open
Abstract
In addition to providing nutritional and bioactive factors necessary for infant development, human breast milk contains bacteria that contribute to the establishment of commensal microbiota in the infant. However, the composition of this bacterial community differs considerably between studies. We hypothesised that bacterial DNA extraction methodology from breast milk samples are a substantial contributor to these inter-study differences. We tested this hypothesis by applying five widely employed methodologies to a mock breast milk sample and four individual human breast milk samples. Significant differences in DNA yield and purity were observed between methods (P < 0.05). Microbiota composition, assessed by 16S rRNA gene amplicon sequencing, also differed significantly with extraction methodology (P < 0.05), including in the contribution of contaminant signal. Concerningly, many of the bacterial taxa identified here as contaminants have been reported as components of the breast milk microbiome in other studies. These findings highlight the importance of using stringent, well-validated, DNA extraction methodologies for analysis of the breast milk microbiome, and exercising caution interpreting microbiota data from low-biomass contexts.
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Affiliation(s)
- Chloe A Douglas
- South Australian Health and Medical Research Institute, Healthy Mothers, Babies and Children Theme, Women's and Children's Hospital, King William Road, Adelaide, South Australia, Australia
- South Australian Health and Medical Research Institute, Microbiome & Host Health Programme, Adelaide, South Australia, Australia
- Faculty of Health Science, Discipline of Medicine - Paediatrics and Reproductive Health, The University of Adelaide, Adelaide, South Australia, Australia
| | - Kerry L Ivey
- South Australian Health and Medical Research Institute, Microbiome & Host Health Programme, Adelaide, South Australia, Australia
- Harvard T.H. Chan School of Public Health, Department of Nutrition, Boston, Massachusetts, USA
| | - Lito E Papanicolas
- South Australian Health and Medical Research Institute, Microbiome & Host Health Programme, Adelaide, South Australia, Australia
| | - Karen P Best
- South Australian Health and Medical Research Institute, Healthy Mothers, Babies and Children Theme, Women's and Children's Hospital, King William Road, Adelaide, South Australia, Australia
| | - Beverly S Muhlhausler
- South Australian Health and Medical Research Institute, Healthy Mothers, Babies and Children Theme, Women's and Children's Hospital, King William Road, Adelaide, South Australia, Australia
- Nutrition & Health Program, Health and Biosecurity, CSIRO, Adelaide, South Australia, Australia
- Department of Food and Wine Science, School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, South Australia, Australia
| | - Geraint B Rogers
- South Australian Health and Medical Research Institute, Microbiome & Host Health Programme, Adelaide, South Australia, Australia.
- College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia.
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Treven P, Mahnič A, Rupnik M, Golob M, Pirš T, Matijašić BB, Lorbeg PM. Evaluation of Human Milk Microbiota by 16S rRNA Gene Next-Generation Sequencing (NGS) and Cultivation/MALDI-TOF Mass Spectrometry Identification. Front Microbiol 2019; 10:2612. [PMID: 31803156 PMCID: PMC6872673 DOI: 10.3389/fmicb.2019.02612] [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: 08/02/2019] [Accepted: 10/28/2019] [Indexed: 12/21/2022] Open
Abstract
The aim of the present study was to characterize human milk microbiota (HMM) with 16S rRNA gene amplicon next-generation sequencing and cultivation/matrix-assisted laser desorption/ionization (MALDI)-time of flight (TOF) mass spectrometry (MS) identification approaches. We analyzed 31 human milk samples from healthy Slovenian mothers. To check the accuracy of MALDI-TOF MS identification, several colonies representing most abundant genera and those, which could not be reliably identified by MALDI-TOF, were subjected to Sanger sequencing of their 16S rRNA gene. We showed that cultivation/MALDI-TOF MS was a suitable tool for culture-dependent determination of HMM. With both approaches, Staphylococcus and Streptococcus were found as predominant genera in HMM and the abundance of Staphylococcus was associated with decreased microbial diversity. In addition, we characterized factors that might influence HMM. The use of a breast pump was significantly associated with composition of HMM, lower microbial load, and higher abundance of cultivable staphylococci. Moreover, our study suggests that administration of probiotics to the suckling infant might influence HMM by increased abundance of lactobacilli and the presence of viable probiotic bacteria in human milk. However, since our study was observational with relatively small sample size, more targeted studies are needed to study possible transfer of probiotics to the mammary gland via an external route and the physiological relevance of these events.
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Affiliation(s)
- Primož Treven
- Department of Animal Science, Biotechnical Faculty, Institute of Dairy Science and Probiotics, University of Ljubljana, Ljubljana, Slovenia
| | - Aleksander Mahnič
- National Laboratory of Health, Environment and Food, Maribor, Slovenia
| | - Maja Rupnik
- National Laboratory of Health, Environment and Food, Maribor, Slovenia
- Faculty of Medicine, University of Maribor, Maribor, Slovenia
| | - Majda Golob
- Faculty of Veterinary Medicine, Institute of Microbiology and Parasitology, University of Ljubljana, Ljubljana, Slovenia
| | - Tina Pirš
- Faculty of Veterinary Medicine, Institute of Microbiology and Parasitology, University of Ljubljana, Ljubljana, Slovenia
| | - Bojana Bogovič Matijašić
- Department of Animal Science, Biotechnical Faculty, Institute of Dairy Science and Probiotics, University of Ljubljana, Ljubljana, Slovenia
| | - Petra Mohar Lorbeg
- Department of Animal Science, Biotechnical Faculty, Institute of Dairy Science and Probiotics, University of Ljubljana, Ljubljana, Slovenia
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Browne PD, Aparicio M, Alba C, Hechler C, Beijers R, Rodríguez JM, Fernández L, de Weerth C. Human Milk Microbiome and Maternal Postnatal Psychosocial Distress. Front Microbiol 2019; 10:2333. [PMID: 31695687 PMCID: PMC6817470 DOI: 10.3389/fmicb.2019.02333] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 09/24/2019] [Indexed: 12/28/2022] Open
Abstract
Human milk contains many bioactive components, including bacteria, which are transferred to the developing infant through breastfeeding. Milk bacteria appear to, amongst others, originate from the maternal gut. A mother’s postnatal psychosocial distress may alter maternal gut microbiota, which in turn may affect the bacteria present in milk. The aim of this study was to explore whether maternal postnatal psychosocial distress was related to alterations in the relative abundances of specific bacteria and to milk microbial diversity. Healthy mothers (N = 77; N = 51 with complete data) collected breast milk samples at 2, 6, and 12 weeks postpartum and filled in mood questionnaires on experienced stress, anxiety, and depressive symptoms at 6 weeks postpartum. A metataxonomic approach (16S rRNA gene sequencing (region V3 and V4) using Illumina MiSeq technology) was used to assess bacterial abundances and diversity. For the group as a whole, an increase in diversity of the milk bacterial community was observed during the first 3 months of breastfeeding (Shannon index). This general increase in diversity appears to be explained by an increase of Lactobacillus and other minor genera, together with a decrease in Staphylococcus. With respect to psychological distress and milk microbial composition, no significant differences in the relative abundance of major bacterial genera were detected between women with high (N = 13) and low (N = 13) psychosocial distress. However, progressive and distinct changes in the content of Firmicutes, Proteobacteria, and Bacteroidetes at the phylum level and Acinetobacter, Flavobacterium, and Lactobacillus at the genera level were observed in milk samples of women with low psychosocial distress. With respect to milk microbial diversity, high maternal psychosocial distress, compared to low maternal psychosocial distress, was related to significantly lower bacterial diversity in milk at 3 months post-delivery. Anxiety, stress, and depressive symptoms separately were unrelated to specific bacterial profiles. The current study suggests a potential relation between maternal psychosocial distress and milk microbiota, providing first evidence of a possible mechanism through which post-partum psychological symptoms may affect infant development and health.
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Affiliation(s)
- Pamela D Browne
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Marina Aparicio
- Department of Nutrition and Food Science, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
| | - Claudio Alba
- Departmental Section of Galenic Pharmacy and Food Technology, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
| | - Christine Hechler
- Developmental Psychology, Behavioural Science Institute, Radboud University, Nijmegen, Netherlands
| | - Roseriet Beijers
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands.,Developmental Psychology, Behavioural Science Institute, Radboud University, Nijmegen, Netherlands
| | - Juan Miguel Rodríguez
- Department of Nutrition and Food Science, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
| | - Leonides Fernández
- Departmental Section of Galenic Pharmacy and Food Technology, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
| | - Carolina de Weerth
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
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Castro I, Alba C, Aparicio M, Arroyo R, Jiménez L, Fernández L, Arias R, Rodríguez JM. Metataxonomic and immunological analysis of milk from ewes with or without a history of mastitis. J Dairy Sci 2019; 102:9298-9311. [PMID: 31421883 DOI: 10.3168/jds.2019-16403] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 06/18/2019] [Indexed: 01/16/2023]
Abstract
Mastitis is a highly prevalent condition that has a great impact on milk production and animal welfare, and often requires substantial management efforts. For this reason, it is generally considered an important threat to the dairy industry. Many microbial, host, and environmental factors can protect against, predispose to, or influence the development of mastitis. The objective of this work was to characterize the milk microbiota of Manchega ewes, and to compare samples from animals with and without a history of mastitis. We analyzed milk samples from 36 ewes belonging to 2 different farms (18 ewes from each farm) using culture-dependent and culture-independent techniques. We also analyzed several immune compounds to investigate associations of mastitis with 3 main variables: farm; history of mastitis or no mastitis; and parity number. Both culture-dependent and culture-independent techniques showed that ewe milk harbored a site-specific complex microbiota and microbiome. Staphylococcus epidermidis was the main species driving the difference between farm A (where it was the dominant species) and B (where it was not). In contrast, samples from farm B were characterized by the presence of a wide spectrum of other coagulase-negative staphylococci. Some of these species have already been associated with subclinical intramammary infections in ruminants. Of the 10 immune compounds assayed in this study, 3 were related to a history of mastitis [IL-8, IFN-γ, and IFN-gamma-induced protein 10 (IP-10)]. Increases in IL-8 concentrations in milk seemed to be a feature of subclinical mastitis in sheep, and in this study, this immune factor was detected only in samples from ewes with some episodes of mastitis and from the group with the highest somatic cell count. We also observed a positive correlation between the samples with the highest somatic cell count and IFN-γ and IP-10 levels. Our results suggest that these 3 compounds could be used as biomarkers for the negative selection of mastitis-prone animals, particularly when somatic cell count is very high.
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Affiliation(s)
- Irma Castro
- Department of Nutrition and Food Science, Complutense University of Madrid, 28040 Madrid, Spain
| | - Claudio Alba
- Departmental Section of Food Technology, Complutense University of Madrid, 28040 Madrid, Spain
| | - Marina Aparicio
- Department of Nutrition and Food Science, Complutense University of Madrid, 28040 Madrid, Spain
| | - Rebeca Arroyo
- Department of Nutrition and Food Science, Complutense University of Madrid, 28040 Madrid, Spain
| | - Lorena Jiménez
- CERSYRA, Regional Institute of Agrifood and Forestry Research and Development of Castilla La Mancha, 13300 Valdepeñas, Spain
| | - Leónides Fernández
- Departmental Section of Food Technology, Complutense University of Madrid, 28040 Madrid, Spain
| | - Ramón Arias
- CERSYRA, Regional Institute of Agrifood and Forestry Research and Development of Castilla La Mancha, 13300 Valdepeñas, Spain.
| | - Juan Miguel Rodríguez
- Department of Nutrition and Food Science, Complutense University of Madrid, 28040 Madrid, Spain.
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A Novel Small Molecule, ZY354, Inhibits Dental Caries-Associated Oral Biofilms. Antimicrob Agents Chemother 2019; 63:AAC.02414-18. [PMID: 30858201 DOI: 10.1128/aac.02414-18] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 03/06/2019] [Indexed: 02/05/2023] Open
Abstract
Biofilm control is a critical approach to the better management of dental caries. Antimicrobial small molecules have shown their potential in the disruption of oral biofilm and control of dental caries. The objectives of this study were to examine the antimicrobial activity and cytotoxicity of a newly designed small-molecule compound, ZY354. ZY354 was synthesized, and its cytotoxicity was evaluated in human oral keratinocytes (HOK), human gingival epithelial cells (HGE), and macrophages (RAW) by CCK-8 assays. Minimal inhibitory concentrations (MICs), minimum bactericidal concentrations (MBCs), minimum biofilm inhibition concentrations (MBICs), and minimum biofilm reduction concentrations (MBRCs) of ZY354 against common oral streptococci (i.e., Streptococcus mutans, Streptococcus gordonii, and Streptococcus sanguinis) were determined by microdilution method. The exopolysaccharide (EPS)/bacterium ratio and the dead/live bacterium ratio in the ZY354-treated multispecies biofilms were determined by confocal laser scanning microscopy, and the microbial composition was visualized and quantified by fluorescent in situ hybridization and quantitative PCR (qPCR). The demineralizing activity of ZY354-treated biofilms was evaluated by transverse microradiography. The results showed that ZY354 exhibited low cytotoxicity in HOK, HGE, and RAW cells and exhibited potent antimicrobial activity against common oral streptococci. The EPS and the abundance of S. mutans were significantly reduced after ZY354 treatment, along with an increased dead/live microbial ratio in multispecies biofilms compared to the level with the nontreated control. The ZY354-treated multispecies biofilms exhibited reduced demineralizing activity at the biofilm/enamel interface. In conclusion, the small-molecule compound ZY354 exhibits low cytotoxicity and remarkable antimicrobial activity against oral streptococci, and it may have a great potential in anticaries clinical applications.
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Corebima BI, Rohsiswatmo R, Gayatri P, Patole S. Fecal human β-defensin-2 (hBD-2) levels and gut microbiota patterns in preterm neonates with different feeding patterns. IRANIAN JOURNAL OF MICROBIOLOGY 2019; 11:151-159. [PMID: 31341570 PMCID: PMC6635308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND OBJECTIVES Human β-defensin-2 (hBD-2) is an essential antibacterial peptide involved in innate immunity and is expressed in breast milk and intestinal mucosa. The aim of this study was to investigate fecal hBD-2 levels and gut microbiota in preterm neonates with different feeding patterns. MATERIALS AND METHODS This study was cross-sectionally designed and included 44 preterm neonates categorized into four groups as follows: breast milk only, breast milk predominant, formula milk predominant, formula milk only. The study was conducted at the Neonatology Ward, National Center Hospital Cipto Mangunkusumo, Jakarta from November 2016 to April 2017. hBD-2 levels were measured by ELISA. Intestinal bacteria were quantified by qPCR. RESULTS hBD-2 levels were significantly different between groups (one-way ANOVA, p=0.004) and the highest value of hBD-2 was found in the formula milk predominant group (344.87±61.2 ng/mL). hBD-2 levels were positively correlated with feeding pattern (Spearman correlation test, p=0.009, r=0.391). There were no significant differences in the total number of specific intestinal microbiota (Bifidobacterium, Lactobacillus and Klebsiella) among groups (one-way ANOVA, p>0.05). Interestingly, the formula milk only group had the highest amount of Klebsiella compared with other groups. hBD-2 levels were not correlated with the quantity of Bifidobacterium, Lactobacillus and Klebsiella (Pearson correlation test, p>0.05). CONCLUSION hBD-2 levels were significantly higher in the formula milk predominant group compared with the breast milk only group. Gut microbiota patterns showed that Bifidobacterium and Lactobacillus were higher in the breast milk only group, while Klebsiella was higher in formula milk group, although this difference was not statistically significant.
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Affiliation(s)
- Brigitta I.R.V. Corebima
- Department of Neonatology, Child Health Division, Faculty of Medicine Brawijaya University, Dr. Saiful Anwar General Hospital, Malang, Indonesia,Corresponding author: Brigitta I.R.V. Corebima, MD, Department of Neonatology, Child Health Division, Faculty of Medicine Brawijaya University, Dr. Saiful Anwar General Hospital, Malang, Indonesia. Tel: +6282140562689,
| | - Rinawati Rohsiswatmo
- Department of Neonatology, Child Health Division, Faculty of Medicine University of Indonesia, Dr. Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Pramita Gayatri
- Department of Gastrohepatology, Child Health Division, Faculty of Medicine University of Indonesia, Dr. Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Sanjay Patole
- Department of Neonatal Paediatrics, King Edward Memorial Hospital for Women, Perth, Australia
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Fernández L, Ruiz L, Jara J, Orgaz B, Rodríguez JM. Strategies for the Preservation, Restoration and Modulation of the Human Milk Microbiota. Implications for Human Milk Banks and Neonatal Intensive Care Units. Front Microbiol 2018; 9:2676. [PMID: 30473683 PMCID: PMC6237971 DOI: 10.3389/fmicb.2018.02676] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 10/19/2018] [Indexed: 12/11/2022] Open
Abstract
Studies carried in the last years have revealed that human milk contains a site-specific microbiota and constitutes a source of potentially beneficial bacteria to the infant gut. Once in the infant gut, these bacteria contribute to the assembly of a physiological gut microbiota and may play several functions, contributing to infant metabolism, protection against infections, immunomodulation or neuromodulation. Many preterm neonates are fed with pasteurized donor’s human milk (DHM) or formula and, therefore, are devoid of contact with human milk microbes. As a consequence, new strategies are required to allow the exposition of a higher number of preterm infants to the human milk microbiota early in life. The first strategy would be to promote and to increase the use of own mother’s milk (OMM) in Neonatal Intensive Care Units (NICUs). Even small quantities of OMM can be very valuable since they would be added to DHM in order to microbiologically “customize” it. When OMM is not available, a better screening of donor women, including routine cytomegalovirus (CMV) screening of milk, may help to avoid the pasteurization of the milk provided by, at least, a relevant proportion of donors. Finally, when pasteurized DHM or formula are the only feeding option, their supplementation with probiotic bacteria isolated from human milk, such as lactic acid bacteria or bifidobacteria, may be an alternative to try to restore a human milk-like microbiota before feeding the babies. In the future, the design of human milk bacterial consortia (minimal human milk microbiotas), including well characterized strains representative of a healthy human milk microbiota, may be an attractive strategy to provide a complex mix of strains specifically tailored to this target population.
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Affiliation(s)
- Leónides Fernández
- Department of Galenic Pharmacy and Food Technology, Complutense University of Madrid, Madrid, Spain
| | - Lorena Ruiz
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias - Consejo Superior de Investigaciones Científicas, Villaviciosa, Spain
| | - Josué Jara
- Department of Galenic Pharmacy and Food Technology, Complutense University of Madrid, Madrid, Spain
| | - Belén Orgaz
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias - Consejo Superior de Investigaciones Científicas, Villaviciosa, Spain
| | - Juan M Rodríguez
- Department of Nutrition and Food Science, Complutense University of Madrid, Madrid, Spain
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Grier A, McDavid A, Wang B, Qiu X, Java J, Bandyopadhyay S, Yang H, Holden-Wiltse J, Kessler HA, Gill AL, Huyck H, Falsey AR, Topham DJ, Scheible KM, Caserta MT, Pryhuber GS, Gill SR. Neonatal gut and respiratory microbiota: coordinated development through time and space. MICROBIOME 2018; 6:193. [PMID: 30367675 PMCID: PMC6204011 DOI: 10.1186/s40168-018-0566-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 09/28/2018] [Indexed: 05/09/2023]
Abstract
BACKGROUND Postnatal development of early life microbiota influences immunity, metabolism, neurodevelopment, and infant health. Microbiome development occurs at multiple body sites, with distinct community compositions and functions. Associations between microbiota at multiple sites represent an unexplored influence on the infant microbiome. Here, we examined co-occurrence patterns of gut and respiratory microbiota in pre- and full-term infants over the first year of life, a period critical to neonatal development. RESULTS Gut and respiratory microbiota collected as longitudinal rectal, throat, and nasal samples from 38 pre-term and 44 full-term infants were first clustered into community state types (CSTs) on the basis of their compositional profiles. Multiple methods were used to relate the occurrence of CSTs to temporal microbiota development and measures of infant maturity, including gestational age (GA) at birth, week of life (WOL), and post-menstrual age (PMA). Manifestation of CSTs followed one of three patterns with respect to infant maturity: (1) chronological, with CST occurrence frequency solely a function of post-natal age (WOL), (2) idiosyncratic to maturity at birth, with the interval of CST occurrence dependent on infant post-natal age but the frequency of occurrence dependent on GA at birth, and (3) convergent, in which CSTs appear first in infants of greater maturity at birth, with occurrence frequency in pre-terms converging after a post-natal interval proportional to pre-maturity. The composition of CSTs was highly dissimilar between different body sites, but the CST of any one body site was highly predictive of the CSTs at other body sites. There were significant associations between the abundance of individual taxa at each body site and the CSTs of the other body sites, which persisted after stringent control for the non-linear effects of infant maturity. Canonical correlations exist between the microbiota composition at each pair of body sites, with the strongest correlations between proximal locations. CONCLUSION These findings suggest that early microbiota is shaped by neonatal innate and adaptive developmental responses. Temporal progression of CST occurrence is influenced by infant maturity at birth and post-natal age. Significant associations of microbiota across body sites reveal distal connections and coordinated development of the infant microbial ecosystem.
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Affiliation(s)
- Alex Grier
- Genomics Research Center, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Andrew McDavid
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Bokai Wang
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Xing Qiu
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - James Java
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Sanjukta Bandyopadhyay
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Hongmei Yang
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Jeanne Holden-Wiltse
- Department of Biostatistics and Computational Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Haeja A Kessler
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY, 14642, USA
| | - Ann L Gill
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY, 14642, USA
| | - Heidie Huyck
- Medicine-Infectious Disease, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Ann R Falsey
- Medicine-Infectious Disease, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - David J Topham
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY, 14642, USA
- Center for Vaccine Biology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Kristin M Scheible
- Division of Neonatology, Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Mary T Caserta
- Division of Infectious Disease, Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Gloria S Pryhuber
- Division of Neonatology, Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Steven R Gill
- Genomics Research Center, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY, 14642, USA.
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Higher intake of coagulase-negative staphylococci from maternal milk promotes gut colonization with mecA-negative Staphylococcus epidermidis in preterm neonates. J Perinatol 2018; 38:1344-1352. [PMID: 30076401 DOI: 10.1038/s41372-018-0183-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/27/2018] [Accepted: 07/11/2018] [Indexed: 11/09/2022]
Abstract
OBJECTIVE We aimed to determine factors associated with gut colonization of preterm neonates with coagulase-negative staphylococci (CoNS) from maternal milk (MM). STUDY DESIGN CoNS isolated from weekly collected stool and MM of hospitalized preterm (n = 49) and healthy term neonates (n = 20) were genotyped. Colonization-related factors were determined by Cox proportional hazards regression. RESULT Gut colonization with mecA-negative Staphylococcus epidermidis from MM was less prevalent (40.8% vs. 95%) and delayed (median age 15.5 vs. 2 days) in preterm compared with term neonates. Enhanced colonization was associated with higher intake of CoNS from MM (hazard ratio (95% confidence interval) 1.006 (1.00-1.01) for 106 colony-forming units), lower proportion of mecA-positive predominant NICU strains in gut (0.09 (0.01-0.49) for 1%) and lower incidence of late-onset CoNS sepsis (5% vs. 34% in those without colonization). CONCLUSION Enteral feeding with larger proportion of unpasteurized MM and limiting spread of predominant strains may promote colonization with CoNS from MM.
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Fernández-Pérez R, Sáenz Y, Rojo-Bezares B, Zarazaga M, Rodríguez JM, Torres C, Tenorio C, Ruiz-Larrea F. Production and Antimicrobial Activity of Nisin Under Enological Conditions. Front Microbiol 2018; 9:1918. [PMID: 30233504 PMCID: PMC6134021 DOI: 10.3389/fmicb.2018.01918] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 07/30/2018] [Indexed: 01/10/2023] Open
Abstract
Lactic acid bacteria (LAB) are responsible for the malolactic fermentation of wines, and, therefore, controlling the growth of these bacteria is a key factor for elaborating premium wines. Sulfur dioxide has been traditionally used as an efficient antimicrobial and antioxidant agent, however, nowadays consumers' demand tends toward a reduction of sulfur dioxide levels in wine and other fermented foods. A previous study of our research group had demonstrated the effectiveness of the bacteriocin nisin to inhibit the growth of enological LAB, and its activity had been tested in culture broths. The aim of this study was to investigate the possibility of controlling the growth of bacteria in wine by the use of nisin in combination with sulfur dioxide, and to study nisin production by the natural producer Lactococcus lactis LM29 under enological conditions. Our results showed that L. lactis LM29 produced nisin in the presence of 2 and 4% ethanol (v/v), while higher concentrations of ethanol fully inhibited the production of nisin. We obtained a nisin enriched active extract (NAE) from the cell-free supernatant of a culture of L. lactis LM29 in MRS broth containing 60% (v/v) sterile grape juice, and the extract was fully active in inhibiting the growth of the enological LAB tested by the microtiter method. Moreover, the nisin concentration of the obtained NAE could actually prevent the formation of an undesirable biofilm of LAB strains. Finally, our results of wine ageing under winery conditions showed that the use of 50 mg/L nisin decreased fourfold the concentration of sulfur dioxide required to prevent LAB growth in the wines.
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Affiliation(s)
- Rocío Fernández-Pérez
- Instituto de Ciencias de la Vid y del Vino (Universidad de La Rioja, CSIC, Gobierno de La Rioja), Logroño, Spain
| | - Yolanda Sáenz
- Area de Microbiología Molecular, Centro de Investigación Biomédica de La Rioja, Logroño, Spain
| | - Beatriz Rojo-Bezares
- Area de Microbiología Molecular, Centro de Investigación Biomédica de La Rioja, Logroño, Spain
| | - Myriam Zarazaga
- Área de Bioquímica y Biología Molecular, Departamento de Agricultura y Alimentación, Universidad de La Rioja, Logroño, Spain
| | - Juan M. Rodríguez
- Department of Nutrition and Food Science, Complutense University of Madrid, Madrid, Spain
| | - Carmen Torres
- Área de Bioquímica y Biología Molecular, Departamento de Agricultura y Alimentación, Universidad de La Rioja, Logroño, Spain
| | - Carmen Tenorio
- Instituto de Ciencias de la Vid y del Vino (Universidad de La Rioja, CSIC, Gobierno de La Rioja), Logroño, Spain
| | - Fernanda Ruiz-Larrea
- Instituto de Ciencias de la Vid y del Vino (Universidad de La Rioja, CSIC, Gobierno de La Rioja), Logroño, Spain
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Korpela K, Costea P, Coelho LP, Kandels-Lewis S, Willemsen G, Boomsma DI, Segata N, Bork P. Selective maternal seeding and environment shape the human gut microbiome. Genome Res 2018; 28:561-568. [PMID: 29496731 PMCID: PMC5880245 DOI: 10.1101/gr.233940.117] [Citation(s) in RCA: 187] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 02/14/2018] [Indexed: 12/11/2022]
Abstract
Vertical transmission of bacteria from mother to infant at birth is postulated to initiate a life-long host-microbe symbiosis, playing an important role in early infant development. However, only the tracking of strictly defined unique microbial strains can clarify where the intestinal bacteria come from, how long the initial colonizers persist, and whether colonization by other strains from the environment can replace existing ones. Using rare single nucleotide variants in fecal metagenomes of infants and their family members, we show strong evidence of selective and persistent transmission of maternal strain populations to the vaginally born infant and their occasional replacement by strains from the environment, including those from family members, in later childhood. Only strains from the classes Actinobacteria and Bacteroidia, which are essential components of the infant microbiome, are transmitted from the mother and persist for at least 1 yr. In contrast, maternal strains of Clostridia, a dominant class in the mother's gut microbiome, are not observed in the infant. Caesarean-born infants show a striking lack of maternal transmission at birth. After the first year, strain influx from the family environment occurs and continues even in adulthood. Fathers appear to be more frequently donors of novel strains to other family members than receivers. Thus, the infant gut is seeded by selected maternal bacteria, which expand to form a stable community, with a rare but stable continuing strain influx over time.
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Affiliation(s)
- Katri Korpela
- European Molecular Biology Laboratory, 69117 Heidelberg, Germany
- Department of Bacteriology and Immunology, Immunobiology Research Program, University of Helsinki, 00014 Helsinki, Finland
| | - Paul Costea
- European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | | | | | - Gonneke Willemsen
- Department of Biological Psychology, Vrije Universiteit, 1081 Amsterdam, The Netherlands
| | - Dorret I Boomsma
- Department of Biological Psychology, Vrije Universiteit, 1081 Amsterdam, The Netherlands
| | - Nicola Segata
- Centre for Integrative Biology, University of Trento, 38123 Trento, Italy
| | - Peer Bork
- European Molecular Biology Laboratory, 69117 Heidelberg, Germany
- Max-Delbrück-Centre for Molecular Medicine, 13125 Berlin, Germany
- Molecular Medicine Partnership Unit, 69120 Heidelberg, Germany
- Department of Bioinformatics, Biocenter, University of Würzberg, 97024 Würzberg, Germany
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Mohammadi F, Eshaghi M, Razavi S, Sarokhalil DD, Talebi M, Pourshafie MR. Characterization of bacteriocin production in Lactobacillus spp. isolated from mother's milk. Microb Pathog 2018; 118:242-246. [PMID: 29551436 DOI: 10.1016/j.micpath.2018.03.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/01/2018] [Accepted: 03/12/2018] [Indexed: 02/01/2023]
Abstract
The purpose of the present study was to isolate Lactobacillus bacteria from mother's milk and to assess their probiotic potential. Sixty breast milk samples were collected from the volunteered mothers aged from 19 to 35 and from rural areas of Lorestan and Markazi Provinces, Iran. At first, 970 bacill-shaped bacterial colonies were isolated from these samples and stored in proper condition. Two hundred isolates were randomly selected and investigated for their ability to tolerate acidic condition and to tolerate bile salt as well. Only 33 isolates could withstand the exposure to low pH and bile salt. The isolates were identified using PCR primer specific to Lactobacillus and it was demonstrated that eighteen of thirty-three isolates were belonged to the Lactobacillus. Among the isolates, 16 and 2 of them were Lactobacillus reuteri and L. gasseri, respectively. In addition, the antibiotic resistance of the isolates was determined using disc diffusion method and all of the isolates were shown to be sensitive to eight out of the twelve investigated antibiotics. Moreover, the antagonistic effect of the isolates was inspected on ten indicator pathogens. Interestingly, all of the pathogenic bacteria were inhibited by Lactobacillus isolates. In addition, to partially understand the nature of inhibition mechanism, well diffusion deployed for two randomly-selected indicator bacteria and the resulting halos of three isolates were statistically significant compared to other lactobacillus (p < 0.05). Subsequently, bacteriocin genes (plnS, Laf, gasA) were identified by PCR among the isolates. The results showed that only 2 isolates possessed the gasA gene which were in accordance with well diffusion test. Consequently, eighteen Lactobacillus isolated from breast milk samples which all of them were able to tolerate low pH and bile salt. Similarly, all of the Lactobacillus isolates were proved to inhibit the growth of pathogen strains and two of them possess a bacteriocin-related gene.
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Affiliation(s)
- Fahime Mohammadi
- Department of Microbiology, School of Medicine, International Campus, Iran University of Medical Sciences, Tehran, Iran
| | - Morteza Eshaghi
- Department of Microbiology, School of Medicine, International Campus, Iran University of Medical Sciences, Tehran, Iran
| | - Shabnam Razavi
- Department of Microbiology, School of Medicine, International Campus, Iran University of Medical Sciences, Tehran, Iran
| | - Davood Darban Sarokhalil
- Department of Microbiology, School of Medicine, International Campus, Iran University of Medical Sciences, Tehran, Iran
| | - Malihe Talebi
- Department of Microbiology, School of Medicine, International Campus, Iran University of Medical Sciences, Tehran, Iran.
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Administration of Lactobacillus plantarum Lp62 to dam rats at the end of delivery and during lactation affects TGF-β1 level and nutritional milk composition, and body weight of pups. Eur J Nutr 2018; 58:1137-1146. [DOI: 10.1007/s00394-018-1628-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 01/29/2018] [Indexed: 12/23/2022]
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50
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Kundu P, Blacher E, Elinav E, Pettersson S. Our Gut Microbiome: The Evolving Inner Self. Cell 2017; 171:1481-1493. [PMID: 29245010 DOI: 10.1016/j.cell.2017.11.024] [Citation(s) in RCA: 362] [Impact Index Per Article: 51.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 10/30/2017] [Accepted: 11/09/2017] [Indexed: 02/06/2023]
Abstract
The "holobiont" concept, defined as the collective contribution of the eukaryotic and prokaryotic counterparts to the multicellular organism, introduces a complex definition of individuality enabling a new comprehensive view of human evolution and personalized characteristics. Here, we provide snapshots of the evolving microbial-host associations and relations during distinct milestones across the lifespan of a human being. We discuss the current knowledge of biological symbiosis between the microbiome and its host and portray the challenges in understanding these interactions and their potential effects on human physiology, including microbiome-nervous system inter-relationship and its relevance to human variation and individuality.
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Affiliation(s)
- Parag Kundu
- Singapore Centre for Environmental Life Sciences Engineering, 60 Nanyang Drive, Singapore 637551, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore.
| | - Eran Blacher
- Department of Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Eran Elinav
- Department of Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel.
| | - Sven Pettersson
- Singapore Centre for Environmental Life Sciences Engineering, 60 Nanyang Drive, Singapore 637551, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore; Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, SE-171 77 Stockholm, Sweden.
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