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Bar-Yaakov N, Meidan B, Ben-Chaim J, Cleper R, Bar-Yosef Y. Increased prevalence of non-E. coli bacteria-caused urinary infection in neonates delivered by cesarian section. J Pediatr Urol 2024:S1477-5131(24)00344-9. [PMID: 38987106 DOI: 10.1016/j.jpurol.2024.06.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 06/24/2024] [Accepted: 06/27/2024] [Indexed: 07/12/2024]
Abstract
OBJECTIVES to assess the association between delivery mode and causative pathogens of infants with urinary tract infections. MATERIALS AND METHODS We conducted a retrospective analysis of the medical records of neonates delivered in a tertiary academic pediatric hospital and diagnosed with urinary tract infections between January 1,2013 and December 31,2017. Excluded were newborns with urinary tract infections post-urological procedures or neurogenic bladders. The retrieved data included demographic characteristics, clinical presentations, laboratory findings, urine cultures, and renal imaging results. Multivariable logistic regressions were employed to identify associations. RESULTS 95 of the 131 neonates' (72.5%) cultures were positive for Escherichia coli. Neonates born via cesarean section (C/S) had a significantly higher prevalence (12/25, 48%) of non-Escherichia coli infections (p = 0.01). The mode of delivery was the only variable associated with non-Escherichia coli infections (odds ratio = 3.1, p = 0.014). Two of the 12 neonates (17%) with non-Escherichia coli cultures in the C/S group were diagnosed as having dilating vesicoureteral reflux. DISCUSSION While the impact of mode of delivery on microbiome composition and UTI risk in the pediatric population is well documented, to the best of our knowledge, our study is the first to evaluate and report on the clinical connection between mode of delivery and neonatal UTIs. Most noteworthy was our finding of an elevated prevalence of non-E. coli cultures in the C/S group (p = 0.014, OR 3.1). This bears important clinical implications, particularly in the setting of congenital anomaly of kidney and urinary tract (CAKUT) screening. CONCLUSIONS Our analyses in this study reveal a significant link between delivery by cesarean section and neonatal urinary tract infections with non- Escherichia coli urine cultures. These findings carry implications for vesicoureteral reflux screening in neonates by raising the level of awareness of the association between the 2 factors. Additional prospective studies on larger cohorts are warranted to further elucidate this relationship and refine clinical decision-making in neonatal care.
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Affiliation(s)
- Noam Bar-Yaakov
- Department of Urology, Tel-Aviv Sourasky Medical Center, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Department of Pediatric Urology, Dana-Dwek Children's Hospital, Tel-Aviv Sourasky Medical Center, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Barak Meidan
- Department of Pediatric Nephrology, Dana-Dwek Children's Hospital, Tel-Aviv Sourasky Medical Center, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Jacob Ben-Chaim
- Department of Urology, Tel-Aviv Sourasky Medical Center, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Department of Pediatric Urology, Dana-Dwek Children's Hospital, Tel-Aviv Sourasky Medical Center, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Roxana Cleper
- Department of Pediatric Nephrology, Dana-Dwek Children's Hospital, Tel-Aviv Sourasky Medical Center, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Yuval Bar-Yosef
- Department of Urology, Tel-Aviv Sourasky Medical Center, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Department of Pediatric Urology, Dana-Dwek Children's Hospital, Tel-Aviv Sourasky Medical Center, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
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McKay JA, Crown M, Bashton M, Pearce D, Entwistle JA, Sangal V. Environmental microbiome in the home and daycare settings during the COVID-19 pandemic, and potential risk of non-communicable disease in children. ENVIRONMENTAL MICROBIOLOGY REPORTS 2024; 16:e13233. [PMID: 38217304 PMCID: PMC10866607 DOI: 10.1111/1758-2229.13233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 12/27/2023] [Indexed: 01/15/2024]
Abstract
An exposure to diverse microbial population early in life is important for the development of immunity against various non-communicable diseases including asthma, childhood leukaemia and other cancers. Social mixing in daycare settings helps with exposure to a variety of microbes. However, social isolation and a high emphasis on workplace hygiene during the COVID pandemic may have affected children's exposure to diverse microbiota. The structure of microbial communities and their role in developing immunity to various diseases are not well understood. In this study, we investigated the structure of microbial communities in daycare and home settings during the pandemic. Interestingly, microbial diversity was relatively higher in dust samples collected from homes, with human-associated taxa being more prevalent compared to those from daycare settings. Environmental microbes were more abundant in dust samples from daycare providers. These results potentially suggest that cleaning practices during the pandemic may have influenced the diversity and microbial abundance of the daycare samples. Several bacterial taxa detected in both the environments are known to induce anti-inflammatory and immunomodulatory responses, conferring protection from various diseases. Therefore, exposure to diverse microbial population in early childhood may play an important role in developing immunity against various non-communicable and infectious diseases.
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Affiliation(s)
- Jill A. McKay
- Faculty of Health and Life SciencesNorthumbria UniversityNewcastle upon TyneUK
| | - Matthew Crown
- Faculty of Health and Life SciencesNorthumbria UniversityNewcastle upon TyneUK
| | - Matthew Bashton
- Faculty of Health and Life SciencesNorthumbria UniversityNewcastle upon TyneUK
| | - David Pearce
- Faculty of Health and Life SciencesNorthumbria UniversityNewcastle upon TyneUK
| | - Jane A. Entwistle
- Faculty of Environment and EngineeringNorthumbria UniversityNewcastle upon TyneUK
| | - Vartul Sangal
- Faculty of Health and Life SciencesNorthumbria UniversityNewcastle upon TyneUK
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3
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Jain A, Meshram RJ, Lohiya S, Patel A, Kaplish D. Exploring the Microbial Landscape of Neonatal Skin Flora: A Comprehensive Review. Cureus 2024; 16:e52972. [PMID: 38406113 PMCID: PMC10894447 DOI: 10.7759/cureus.52972] [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: 01/12/2024] [Accepted: 01/26/2024] [Indexed: 02/27/2024] Open
Abstract
This comprehensive review explores the intricate landscape of the neonatal skin microbiome, shedding light on its dynamic composition, developmental nuances, and influential factors. The neonatal period represents a critical window during which microbial colonization significantly impacts local skin health and the foundational development of the immune system. Factors such as mode of delivery and gestational age underscore the vulnerability of neonates to disruptions in microbial establishment. Key findings emphasize the broader systemic implications of the neonatal skin microbiome, extending beyond immediate health outcomes to influence susceptibility to infections, allergies, and immune-related disorders. This review advocates for a paradigm shift in neonatal care, proposing strategies to preserve and promote a healthy skin microbiome for long-term health benefits. The implications of this research extend to public health, where interventions targeting the neonatal skin microbiome could potentially mitigate diseases originating in early life. As we navigate the intersection of research and practical applications, bridging the gap between knowledge and implementation becomes imperative for translating these findings into evidence-based practices and improving neonatal well-being on a broader scale.
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Affiliation(s)
- Aditya Jain
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Revat J Meshram
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Sham Lohiya
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Ankita Patel
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Divyanshi Kaplish
- Pediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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Ji J, Jin W, Liu S, Jiao Z, Li X. Probiotics, prebiotics, and postbiotics in health and disease. MedComm (Beijing) 2023; 4:e420. [PMID: 37929014 PMCID: PMC10625129 DOI: 10.1002/mco2.420] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/30/2023] [Accepted: 10/13/2023] [Indexed: 11/07/2023] Open
Abstract
The gut microbiota and its homeostasis play a crucial role in human health. However, for some diseases related to the gut microbiota, current traditional medicines can only relieve symptoms, and it is difficult to solve the root causes or even cause side effects like disturbances in the gut microbiota. Increasing clinical studies and evidences have demonstrated that probiotics, prebiotics, and postbiotics can prevent and treat various diseases, but currently they can only be used as dietary supplements rather than medicines, which restricts the application of probiotics in the field of medicine. Here, this review analyzes the importance of gut microbiota in human health and the current problems of traditional medicines, and systematically summarizes the effectiveness and mechanisms of probiotics, prebiotics, and postbiotics in maintaining health and treating diseases based on animal models and clinical trials. And based on current research outcomes and development trends in this field, the challenges and prospects of their clinical application in maintaining health, alleviating and treating diseases are analyzed. It is hoped to promote the application of probiotics, prebiotics, and postbiotics in disease treatment and open up new frontiers in probiotic research.
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Affiliation(s)
- Jing Ji
- MOE Key Laboratory of Cell Activities and Stress AdaptationsSchool of Life SciencesLanzhou UniversityLanzhouGansuChina
| | - Weilin Jin
- Institute of Cancer NeuroscienceMedical Frontier Innovation Research CenterThe First Hospital of Lanzhou UniversityThe First Clinical Medical College of Lanzhou UniversityLanzhouGansuChina
| | - Shuang‐Jiang Liu
- State Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijingChina
| | - Zuoyi Jiao
- Cuiying Biomedical Research CenterThe Second Hospital of Lanzhou UniversityLanzhouGansuChina
| | - Xiangkai Li
- MOE Key Laboratory of Cell Activities and Stress AdaptationsSchool of Life SciencesLanzhou UniversityLanzhouGansuChina
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5
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Aeimcharnbanchong K. Incidence Rate and Associated Factors of Early Onset Sepsis Among Neonate Born at ≥35 Weeks' Gestation in Thai Tertiary Hospital. Infect Drug Resist 2023; 16:4093-4100. [PMID: 37396069 PMCID: PMC10312319 DOI: 10.2147/idr.s415590] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/21/2023] [Indexed: 07/04/2023] Open
Abstract
Purpose This study aimed to find the incidence rate and associated factors of EOS in neonates with 35 weeks of gestational age or more at Panyananthaphikkhu Chonprathan Medical Center (PCMC) in order to develop effective prevention and treatment strategies to reduce neonatal mortality. Methods A cross-sectional study was done in a single-center neonatal intensive care unit at PCMC. Data were collected from October 2016 to September 2021 from all neonates with 35 weeks of gestational age or more with EOS and randomly collected from neonates with 35 weeks of gestational age or more without EOS. The associated factors of EOS were shown as an odds ratio by multivariate analysis of binary logistic regression. Results In this study, 595 neonates were enrolled and divided into 2 groups - EOS group (193 neonates) and non-EOS group (402 neonates). The incidence rate of EOS was 21.23/1000 live births, comprising 2 culture-positive EOS neonates (0.22/1000 live births) and 191 culture-negative EOS neonates (21/1000 live births). The common clinical manifestations in the EOS group were respiratory distress (157 neonates, 81%), temperature instability (43 neonates, 22.3%) and poor feeding (39 neonates, 20.2%). Statistically significant relationship (p-value < 0.05) was found in prolonged rupture of membrane (OR 11.7, 95% CI: 2.54-53.88), low birth weight (OR 2.3, 95% CI: 1.25-4.4) and normal Apgar score at 5 minutes after birth (OR 0.5, 95% CI: 0.31-0.71). Conclusion Our study shows that the incidence rate of culture positive EOS in late preterm and term is very low. EOS was significantly associated with prolonged rupture of membrane and low birth weight whereas lower rate of EOS was significantly associated with normal Apgar score at 5 minutes after birth. Efforts to recognize these factors early and effectively resuscitate neonates may reduce and prevent neonatal morbidity and mortality.
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Affiliation(s)
- Kanokwan Aeimcharnbanchong
- Department of Pediatrics, Panyananthaphikkhu Chonprathan Medical Center, Srinakarinwirot University, Nonthaburi, Thailand
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Wang Y, Hang C, Hu J, Li C, Zhan C, Pan J, Yuan T. Role of gut-brain axis in neurodevelopmental impairment of necrotizing enterocolitis. Front Neurosci 2023; 17:1059552. [PMID: 36743802 PMCID: PMC9894661 DOI: 10.3389/fnins.2023.1059552] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 01/02/2023] [Indexed: 01/20/2023] Open
Abstract
Necrotizing enterocolitis (NEC) is a common gastrointestinal disease of preterm infants with high morbidity and mortality. In survivors of NEC, one of the leading causes of long-term morbidity is the development of severe neurocognitive injury. The exact pathogenesis of neurodevelopmental delay in NEC remains unknown, but microbiota is considered to have dramatic effects on the development and function of the host brain via the gut-brain axis. In this review, we discuss the characteristics of microbiota of NEC, the impaired neurological outcomes, and the role of the complex interplay between the intestinal microbiota and brain to influence neurodevelopment in NEC. The increasing knowledge of microbial-host interactions has the potential to generate novel therapies for manipulating brain development in the future.
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Affiliation(s)
- Yu Wang
- Department of Neonatology, Children’s Hospital of Zhejiang University, Hangzhou, China
| | - Chengcheng Hang
- Department of Neonatology, Children’s Hospital of Zhejiang University, Hangzhou, China
| | - Jun Hu
- Department of Surgical Intensive Care Unit, Second Affiliated Hospital of Zhejiang University, Hangzhou, China
| | - Chen Li
- Department of Neonatology, Children’s Hospital of Zhejiang University, Hangzhou, China
| | - Canyang Zhan
- Department of Neonatology, Children’s Hospital of Zhejiang University, Hangzhou, China
| | - Jiarong Pan
- Department of Neonatology, Children’s Hospital of Zhejiang University, Hangzhou, China
| | - Tianming Yuan
- Department of Neonatology, Children’s Hospital of Zhejiang University, Hangzhou, China,*Correspondence: Tianming Yuan,
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Karagas MR, McRitchie S, Hoen AG, Takigawa C, Jackson B, Baker ER, Madan J, Sumner SJ, Pathmasiri W. Alterations in Microbial-Associated Fecal Metabolites in Relation to Arsenic Exposure Among Infants. EXPOSURE AND HEALTH 2022; 14:941-949. [PMID: 36776720 PMCID: PMC9918239 DOI: 10.1007/s12403-022-00468-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/09/2021] [Accepted: 01/22/2022] [Indexed: 05/13/2023]
Abstract
In utero and early life exposure to inorganic arsenic (iAs) alters immune response in experimental animals and is associated with an increased risk of infant infections. iAs exposure is related to differences in the gut microbiota diversity, community structure, and the relative abundance of individual microbial taxa both in laboratory and human studies. Metabolomics permits a direct measure of molecular products of microbial and host metabolic processes. We conducted NMR metabolomics analysis on infant stool samples and quantified the relative concentrations of 34 known microbial-related metabolites. We examined these metabolites in relation to both in utero and infant log2 urinary total arsenic concentrations (utAs, the sum of iAs and iAs metabolites) collected at approximately 6 weeks of age using linear regression models, adjusted for infant sex, age at sample collection, type of delivery (vaginal vs. cesarean section), feeding mode (breast milk vs. any formula), and specific gravity. Increased fecal butyrate (b = 214.24), propionate (b = 518.33), cholate (b = 8.79), tryptophan (b= 14.23), asparagine (b = 28.80), isoleucine (b = 65.58), leucine (b = 95.91), malonate (b = 50.43), and uracil (b = 36.13), concentrations were associated with a doubling of infant utAs concentrations (p< 0.05). These associations were largely among infants who were formula fed. No clear associations were observed with maternal utAs and infant fecal metabolites. Metabolomic analyses of infant stool samples lend further evidence that the infant gut microbiota is sensitive to As exposure, and these effects may have functional consequences.
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Affiliation(s)
- Margaret R. Karagas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - Susan McRitchie
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Anne G. Hoen
- Department of Epidemiology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - Cindy Takigawa
- Department of Epidemiology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - Brian Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, NH, USA
| | - Emily R. Baker
- Department of Obstetrics and Gynecology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - Juliette Madan
- Department of Epidemiology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
- Department of Pediatrics & Psychiatry, Children’s Hospital at Dartmouth, Dartmouth Hitchcock Medical Center, Lebanon, NH, USA
| | - Susan J. Sumner
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Wimal Pathmasiri
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Allergic Inflammation: Effect of Propolis and Its Flavonoids. Molecules 2022; 27:molecules27196694. [PMID: 36235230 PMCID: PMC9570745 DOI: 10.3390/molecules27196694] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/02/2022] [Accepted: 10/03/2022] [Indexed: 11/17/2022] Open
Abstract
The incidence of allergic diseases and their complications are increasing worldwide. Today, people increasingly use natural products, which has been termed a "return to nature". Natural products with healing properties, especially those obtained from plants and bees, have been used in the prevention and treatment of numerous chronic diseases, including allergy and/or inflammation. Propolis is a multi-component resin rich in flavonoids, collected and transformed by honeybees from buds and plant wounds for the construction and adaptation of their nests. This article describes the current views regarding the possible mechanisms and multiple benefits of flavonoids in combating allergy and allergy-related complications. These benefits arise from flavonoid anti-allergic, anti-inflammatory, antioxidative, and wound healing activities and their effects on microbe-immune system interactions in developing host responses to different allergens. Finally, this article presents various aspects of allergy pathobiology and possible molecular approaches in their treatment. Possible mechanisms regarding the antiallergic action of propolis on the microbiota of the digestive and respiratory tracts and skin diseases as a method to selectively remove allergenic molecules by the process of bacterial biotransformation are also reported.
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Liang J, Li T, Zhao J, Wang C, Sun H. Current understanding of the human microbiome in glioma. Front Oncol 2022; 12:781741. [PMID: 36003766 PMCID: PMC9393498 DOI: 10.3389/fonc.2022.781741] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 07/11/2022] [Indexed: 11/17/2022] Open
Abstract
There is mounting evidence that the human microbiome is highly associated with a wide variety of central nervous system diseases. However, the link between the human microbiome and glioma is rarely noticed. The exact mechanism of microbiota to affect glioma remains unclear. Recent studies have demonstrated that the microbiome may affect the development, progress, and therapy of gliomas, including the direct impacts of the intratumoral microbiome and its metabolites, and the indirect effects of the gut microbiome and its metabolites. Glioma-related microbiome (gut microbiome and intratumoral microbiome) is associated with both tumor microenvironment and tumor immune microenvironment, which ultimately influence tumorigenesis, progression, and responses to treatment. In this review, we briefly summarize current knowledge regarding the role of the glioma-related microbiome, focusing on its gut microbiome fraction and a brief description of the intratumoral microbiome, and put forward the prospects in which microbiome can be applied in the future and some challenges still need to be solved.
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Affiliation(s)
- Jianhao Liang
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Ting Li
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jiajia Zhao
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Cheng Wang
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Haitao Sun
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- Department of Laboratory Medicine, Clinical Biobank Center, Microbiome Medicine Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- Key Laboratory of Mental Health of the Ministry of Education, Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Southern Medical University, Guangzhou, China
- *Correspondence: Haitao Sun,
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10
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Irons EE, Cortes Gomez E, Andersen VL, Lau JTY. Bacterial colonization and TH17 immunity are shaped by intestinal sialylation in neonatal mice. Glycobiology 2022; 32:414-428. [PMID: 35157771 PMCID: PMC9022908 DOI: 10.1093/glycob/cwac005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 01/10/2022] [Accepted: 01/30/2022] [Indexed: 11/14/2022] Open
Abstract
Interactions between the neonate host and its gut microbiome are central to the development of a healthy immune system. However, the mechanisms by which animals alter early colonization of microbiota for their benefit remain unclear. Here, we investigated the role of early-life expression of the α2,6-sialyltransferase ST6GAL1 in microbiome phylogeny and mucosal immunity. Fecal, upper respiratory, and oral microbiomes of pups expressing or lacking St6gal1 were analyzed by 16S rRNA sequencing. At weaning, the fecal microbiome of St6gal1-KO mice had reduced Clostridiodes, Coprobacillus, and Adlercreutzia, but increased Helicobacter and Bilophila. Pooled fecal microbiomes from syngeneic donors were transferred to antibiotic-treated wild-type mice, before analysis of recipient mucosal immune responses by flow cytometry, RT-qPCR, microscopy, and ELISA. Transfer of St6gal1-KO microbiome induced a mucosal Th17 response, with expression of T-bet and IL-17, and IL-22-dependent gut lengthening. Early life intestinal sialylation was characterized by RT-qPCR, immunoblot, microscopy, and sialyltransferase enzyme assays in genetic mouse models at rest or with glucocorticoid receptor modulators. St6gal1 expression was greatest in the duodenum, where it was mediated by the P1 promoter and efficiently inhibited by dexamethasone. Our data show that the inability to produce α2,6-sialyl ligands contributes to microbiome-dependent Th17 inflammation, highlighting a pathway by which the intestinal glycosylation regulates mucosal immunity.
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Affiliation(s)
- Eric E Irons
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
| | - Eduardo Cortes Gomez
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
| | - Valerie L Andersen
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, United States
| | - Joseph T Y Lau
- Corresponding author: Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY 14263, USA.
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Conta G, Del Chierico F, Reddel S, Marini F, Sciubba F, Capuani G, Tomassini A, Di Cocco ME, Laforgia N, Baldassarre ME, Putignani L, Miccheli A. Longitudinal Multi-Omics Study of a Mother-Infant Dyad from Breastfeeding to Weaning: An Individualized Approach to Understand the Interactions Among Diet, Fecal Metabolome and Microbiota Composition. Front Mol Biosci 2021; 8:688440. [PMID: 34671642 PMCID: PMC8520934 DOI: 10.3389/fmolb.2021.688440] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 09/20/2021] [Indexed: 01/02/2023] Open
Abstract
The development of the human gut microbiota is characterized by a dynamic sequence of events from birth to adulthood, which make the gut microbiota unique for everyone. Its composition and metabolism may play a critical role in the intestinal homeostasis and health. We propose a study on a single mother-infant dyad to follow the dynamics of an infant fecal microbiota and metabolome changes in relation to breast milk composition during the lactation period and evaluate the changes induced by introduction of complementary food during the weaning period. Nuclear Magnetic Resonance (NMR)-based metabolomics was performed on breast milk and, together with 16S RNA targeted-metagenomics analysis, also on infant stool samples of a mother-infant dyad collected over a period running from the exclusive breastfeeding diet to weaning. Breast milk samples and neonatal stool samples were collected from the 4th to the 10th month of life. Both specimens were collected from day 103 to day 175, while from day 219-268 only stool samples were examined. An exploratory and a predictive analysis were carried out by means of Common component and specific weight analysis and multi-block partial least squares discriminant analysis, respectively. Stools collected during breastfeeding and during a mixed fruit/breastfeeding diet were characterized by high levels of fucosyl-oligosaccharides and glycolysis intermediates, including succinate and formate. The transition to a semi-solid food diet was characterized by several changes in fecal parameters: increase in short-chain fatty acids (SCFAs) levels, including acetate, propionate and butyrate, dissapearance of HMOs and the shift in the community composition, mainly occurring within the Firmicutes phylum. The variations in the fecal metabolome reflected the infant's diet transition, while the composition of the microbiota followed a more complex and still unstable behavior.
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Affiliation(s)
- Giorgia Conta
- Department of Chemistry, Sapienza University of Rome, Rome, Italy.,NMR-Based Metabolomics Laboratory of Sapienza (NMLab), Sapienza University of Rome, Rome, Italy
| | - Federica Del Chierico
- Multimodal Laboratory Medicine Research Area, Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Sofia Reddel
- Multimodal Laboratory Medicine Research Area, Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Federico Marini
- Department of Chemistry, Sapienza University of Rome, Rome, Italy.,NMR-Based Metabolomics Laboratory of Sapienza (NMLab), Sapienza University of Rome, Rome, Italy
| | - Fabio Sciubba
- Department of Chemistry, Sapienza University of Rome, Rome, Italy.,NMR-Based Metabolomics Laboratory of Sapienza (NMLab), Sapienza University of Rome, Rome, Italy
| | - Giorgio Capuani
- Department of Chemistry, Sapienza University of Rome, Rome, Italy.,NMR-Based Metabolomics Laboratory of Sapienza (NMLab), Sapienza University of Rome, Rome, Italy
| | | | | | - Nicola Laforgia
- Department of Biomedical Science and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | | | - Lorenza Putignani
- Department of Diagnostic and Laboratory Medicine, Unit of Microbiology and Diagnostic Immunology, Unit of Microbiomics and Multimodal Laboratory Medicine Research Area, Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Alfredo Miccheli
- NMR-Based Metabolomics Laboratory of Sapienza (NMLab), Sapienza University of Rome, Rome, Italy.,Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
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12
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Reducing Blood Culture and Antibiotic Usage in Neonates. Adv Neonatal Care 2021; 22:309-316. [DOI: 10.1097/anc.0000000000000932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Ruoss JL, Bazacliu C, Russell JT, de la Cruz D, Li N, Gurka MJ, Filipp SL, Polin RA, Triplett EW, Neu J. Routine Early Antibiotic Use in SymptOmatic Preterm Neonates: A Pilot Randomized Controlled Trial. J Pediatr 2021; 229:294-298.e3. [PMID: 32979383 PMCID: PMC8958904 DOI: 10.1016/j.jpeds.2020.09.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 09/16/2020] [Accepted: 09/21/2020] [Indexed: 02/04/2023]
Abstract
We enrolled 98 infants (gestational age <33 weeks) in a pilot randomized trial of antibiotics vs no antibiotics; 55 were randomized (lower maternal infectious risk; symptoms expected for gestation). Adverse events did not differ significantly between the randomization arms. This trial establishes a framework for a larger multicentered trial.
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Affiliation(s)
- J. Lauren Ruoss
- Division of Neonatology, Department of Pediatrics, University of Florida, Gainesville, FL, USA
| | - Catalina Bazacliu
- Division of Neonatology, Department of Pediatrics, University of Florida, Gainesville, FL, USA
| | - Jordan T. Russell
- Department of Microbiology and Cell Science, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA
| | - Diomel de la Cruz
- Division of Neonatology, Department of Pediatrics, University of Florida, Gainesville, FL, USA
| | - Nan Li
- Division of Neonatology, Department of Pediatrics, University of Florida, Gainesville, FL, USA
| | - Matthew J. Gurka
- Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Stephanie L. Filipp
- Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Richard A. Polin
- Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, USA
| | - Eric W. Triplett
- Department of Microbiology and Cell Science, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA
| | - Josef Neu
- Division of Neonatology, Department of Pediatrics, University of Florida, Gainesville, FL, USA
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14
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Raba AA, O'Sullivan A, Miletin J. Pathogenesis of necrotising enterocolitis: The impact of the altered gut microbiota and antibiotic exposure in preterm infants. Acta Paediatr 2021; 110:433-440. [PMID: 32876963 DOI: 10.1111/apa.15559] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 08/05/2020] [Accepted: 08/26/2020] [Indexed: 12/26/2022]
Abstract
Necrotising enterocolitis (NEC) is a devastating condition with high morbidity and mortality seen predominately in preterm infants. Multiple factors are associated with the pathogenesis of NEC. The widespread use of antibiotics in the neonatal intensive care unit might play a role in the pathogenesis of NEC in preterm infants. This review provides a summary on the intestinal microbiota in preterm infants with a focus on how antibiotic exposure may reduce the biodiversity of the intestinal microbiota and may predispose preterm infants to NEC. CONCLUSION: Prolonged antibiotic therapy has been suggested as a risk factor for the development of NEC in preterm infants.
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Affiliation(s)
- Ali Ahmed Raba
- UCD School of Medicine and Medical Sciences Dublin Ireland
- Coombe Women and Infants University Hospital Dublin Ireland
| | | | - Jan Miletin
- UCD School of Medicine and Medical Sciences Dublin Ireland
- Coombe Women and Infants University Hospital Dublin Ireland
- Institute for the Care of Mother and Child Prague Czech Republic
- 3rd School of Medicine Charles University Prague Czech Republic
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15
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Sloane AJ, Carola DL, Lafferty MA, Edwards C, Greenspan J, Aghai ZH. Management of infants born to mothers with chorioamnionitis: A retrospective comparison of the three approaches recommended by the committee on fetus and newborn. J Neonatal Perinatal Med 2020; 14:383-390. [PMID: 33337392 DOI: 10.3233/npm-200531] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Based on the most recently published recommendations from the Committee on the Fetus and Newborn (COFN), three approaches currently exist for the use of risk factors to identify infants who are at increased risk of early-onset sepsis (EOS). Categorical risk factor assessments recommend laboratory testing and empiric antibiotic therapy for all infants born to mothers with a clinical diagnosis of chorioamnionitis. Risk assessments based on clinical condition recommend frequent examinations and close vital sign monitoring for infants born to mothers with chorioamnionitis. The Kaiser Permanente EOS risk calculator (SRC) is an example of the third approach, multivariate risk assessments. The aim of our study was to compare the three risk stratification approaches recommended by the COFN for management of chorioamnionitis-exposed infants. METHODS Retrospective study of 1,521 infants born ≥35 weeks to mothers with chorioamnionitis. Management recommendations of the SRC were compared to the recommendations of categorical risk assessment and risk assessment based on clinical condition (CCA). RESULTS Hypothetical application of SRC and CCA resulted in 79.6% and 76.8-85.1% respectively fewer infants allocated empiric antibiotic therapy. While CCA recommended enhanced observation for all chorioamnionitis-exposed infants, SRC recommended routine care without enhanced observation in 44.3% infants. For the six infants (0.39%) with EOS, SRC and CCA recommended empiric antibiotics only for three symptomatic infants. CONCLUSION The SRC and CCA can reduce antibiotic use but potentially delay antibiotic treatment. The SRC does not recommend enhanced observation with frequent and prolonged vital signs for >44% of chorioamnionitis-exposed infants.
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Affiliation(s)
- A J Sloane
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA, USA
| | - D L Carola
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA, USA
| | - M A Lafferty
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA, USA
| | - C Edwards
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA, USA
| | - J Greenspan
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA, USA
| | - Z H Aghai
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA, USA
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16
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Impact of Microbiota: A Paradigm for Evolving Herd Immunity against Viral Diseases. Viruses 2020; 12:v12101150. [PMID: 33050511 PMCID: PMC7599628 DOI: 10.3390/v12101150] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/18/2020] [Accepted: 09/28/2020] [Indexed: 12/14/2022] Open
Abstract
Herd immunity is the most critical and essential prophylactic intervention that delivers protection against infectious diseases at both the individual and community level. This process of natural vaccination is immensely pertinent to the current context of a pandemic caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection around the globe. The conventional idea of herd immunity is based on efficient transmission of pathogens and developing natural immunity within a population. This is entirely encouraging while fighting against any disease in pandemic circumstances. A spatial community is occupied by people having variable resistance capacity against a pathogen. Protection efficacy against once very common diseases like smallpox, poliovirus or measles has been possible only because of either natural vaccination through contagious infections or expanded immunization programs among communities. This has led to achieving herd immunity in some cohorts. The microbiome plays an essential role in developing the body’s immune cells for the emerging competent vaccination process, ensuring herd immunity. Frequency of interaction among microbiota, metabolic nutrients and individual immunity preserve the degree of vaccine effectiveness against several pathogens. Microbiome symbiosis regulates pathogen transmissibility and the success of vaccination among different age groups. Imbalance of nutrients perturbs microbiota and abrogates immunity. Thus, a particular population can become vulnerable to the infection. Intestinal dysbiosis leads to environmental enteropathy (EE). As a consequence, the generation of herd immunity can either be delayed or not start in a particular cohort. Moreover, disparities of the protective response of many vaccines in developing countries outside of developed countries are due to inconsistencies of healthy microbiota among the individuals. We suggested that pan-India poliovirus vaccination program, capable of inducing herd immunity among communities for the last 30 years, may also influence the inception of natural course of heterologous immunity against SARS-CoV-2 infection. Nonetheless, this anamnestic recall is somewhat counterintuitive, as antibody generation against original antigens of SARS-CoV-2 will be subdued due to original antigenic sin.
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17
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Vogel SC, Brito NH, Callaghan BL. Early Life Stress and the Development of the Infant Gut Microbiota: Implications for Mental Health and Neurocognitive Development. Curr Psychiatry Rep 2020; 22:61. [PMID: 32918633 DOI: 10.1007/s11920-020-01186-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
PURPOSE OF REVIEW We review the state of the literature examining associations between early life stress (ELS), gut microbiota, and neurocognitive development and mental health in animals and humans. We identify gaps in current models and areas for future research. RECENT FINDINGS ELS is associated with changes in gut microbiota, which correspond to changes in affective and cognitive functioning in both animals and humans. Some of these ELS-induced psychological changes can be remedied by supplementation with probiotics in early life, suggesting a potential area for intervention for ELS-exposed children. Prenatal stress exposure is rarely studied in humans in relation to gut microbiota, but animal work has suggested important associations between prenatal stress and fetal programming that should be tested in humans. The gut microbiota plays an important role in the association between ELS, neurocognitive development, and mental health. More work is needed to fully understand these associations in humans.
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Affiliation(s)
- Sarah C Vogel
- Department of Applied Psychology, New York University, 246 Greene Street, Kimball Hall, New York, NY, 10003, USA.
| | - Natalie H Brito
- Department of Applied Psychology, New York University, 246 Greene Street, Kimball Hall, New York, NY, 10003, USA
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18
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Coleman C, Carola DL, Sloane AJ, Lafferty MA, Roman A, Cruz Y, Solarin K, Aghai ZH. A comparison of Triple I classification with neonatal early-onset sepsis calculator recommendations in neonates born to mothers with clinical chorioamnionitis. J Perinatol 2020; 40:1308-1314. [PMID: 32678316 DOI: 10.1038/s41372-020-0727-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 06/11/2020] [Accepted: 07/07/2020] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To compare the early-onset sepsis (EOS) calculator recommendations for infants born to mothers with clinical chorioamnionitis with those made by the Triple I classification. STUDY DESIGN Retrospective analysis of chorioamnionitis-exposed neonates ≥35 weeks. EOS risk was calculated with baseline risks of 0.5/1000 and 4/1000. Mothers were retrospectively categorized using the Triple I classification. Calculator recommendations were compared with the Triple I classification recommendations. RESULTS We included 687 chorioamnionitis-exposed neonates. With a baseline risk of 0.5/1000, the calculator recommended no evaluation in 68.4% of infants of mothers with confirmed Triple I. With a baseline risk of 4/1000, 62.3% of infants of mothers with confirmed Triple I and 57.1% of infants born to mothers who did not meet fever criteria would have received evaluation. CONCLUSIONS The EOS calculator with either baseline risk does not recommend evaluation in a large number of infants born to mothers with confirmed Triple I.
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Affiliation(s)
- Cassandra Coleman
- Pediatrics, Thomas Jefferson University Hospital/Nemours, Philadelphia, PA, USA
| | - David L Carola
- Neonatology, Thomas Jefferson University Hospital/Nemours, Philadelphia, PA, USA
| | - Amy J Sloane
- Neonatology, Thomas Jefferson University Hospital/Nemours, Philadelphia, PA, USA
| | - Margaret A Lafferty
- Neonatology, Thomas Jefferson University Hospital/Nemours, Philadelphia, PA, USA
| | - Amanda Roman
- Maternal Fetal Medicine, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Yury Cruz
- Maternal Fetal Medicine, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Kolawole Solarin
- Neonatology, Thomas Jefferson University Hospital/Nemours, Philadelphia, PA, USA
| | - Zubair H Aghai
- Neonatology, Thomas Jefferson University Hospital/Nemours, Philadelphia, PA, USA.
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19
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Cioffi CC, Tavalire HF, Neiderhiser JM, Bohannan B, Leve LD. History of breastfeeding but not mode of delivery shapes the gut microbiome in childhood. PLoS One 2020; 15:e0235223. [PMID: 32614839 PMCID: PMC7332026 DOI: 10.1371/journal.pone.0235223] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 06/10/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The naïve neonatal gut is sensitive to early life experiences. Events during this critical developmental window may have life-long impacts on the gut microbiota. Two experiences that have been associated with variation in the gut microbiome in infancy are mode of delivery and feeding practices (eg, breastfeeding). It remains unclear whether these early experiences are responsible for microbial differences beyond toddlerhood. AIMS Our study examined whether mode of delivery and infant feeding practices are associated with differences in the child and adolescent microbiome. DESIGN, SUBJECTS, MEASURES We used an adoption-sibling design to compare genetically related siblings who were reared together or apart. Gut microbiome samples were collected from 73 children (M = 11 years, SD = 3 years, range = 3-18 years). Parents reported on child breastfeeding history, age, sex, height, and weight. Mode of delivery was collected through medical records and phone interviews. RESULTS Negative binomial mixed effects models were used to identify whether mode of delivery and feeding practices were related to differences in phylum and genus-level abundance of bacteria found in the gut of child participants. Covariates included age, sex, and body mass index. Genetic relatedness and rearing environment were accounted for as random effects. We observed a significant association between lack of breastfeeding during infancy and a greater number of the genus Bacteroides in stool in childhood and adolescence. CONCLUSION The absence of breastfeeding may impart lasting effects on the gut microbiome well into childhood.
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Affiliation(s)
| | | | - Jenae M. Neiderhiser
- The Pennsylvania State University, University Park, PA, United States of America
| | | | - Leslie D. Leve
- University of Oregon, Eugene, OR, United States of America
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20
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Kurath-Koller S, Neumann C, Moissl-Eichinger C, Kraschl R, Kanduth C, Hopfer B, Pausan MR, Urlesberger B, Resch B. Hospital Regimens Including Probiotics Guide the Individual Development of the Gut Microbiome of Very Low Birth Weight Infants in the First Two Weeks of Life. Nutrients 2020; 12:E1256. [PMID: 32354144 PMCID: PMC7281991 DOI: 10.3390/nu12051256] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/23/2020] [Accepted: 04/25/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND It is unknown to what extent the microbiome of preterm infants is influenced by hospital regimens including the use of different probiotics when it comes to the prevention of necrotizing enterocolitis (NEC). METHODS Prospective controlled multicenter cohort study including very low birth weight infants from three neonatal intensive care units (NICUs) between October 2015 and March 2017. During this time span, stool was sampled every other day during the first two weeks and samples were subjected to amplicon-based microbiome analyses. Out of these, seventeen negative controls were processed (German Registry of Clinical Trials (No.: DRKS00009290)). RESULTS The groups (3 × 18 infants) showed no statistically significant difference regarding gestational age, birth weight, APGAR scores and oxygen demand. 2029 different taxa were detected, including Enterococcus and Staphylococcus, as well as the probiotic genera Lactobacillus and Bifidobacterium predominating. The bacterial load was found to increase earlier on when probiotics were used. Without probiotics administration, Lactobacillus and Bifidobacterium contributed only marginally to the fecal microbiome. Some infants did not respond to probiotic administration. The samples from all centers participating reached a very similar diversity after two weeks while the microbiome samples from all three centers clustered significantly yet varied from each other. CONCLUSION Probiotics proved to be safe and initiated an earlier increase of bacterial load (with marked individual divergences), which might play a crucial role in the prevention of neonatal morbidities. Meconium was found not to be free of bacterial DNA, and oral antibiotics did not influence the fecal microbiome development negatively, and hospital regimes led to a center-specific, distinct cluster formation.
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Affiliation(s)
- Stefan Kurath-Koller
- Division of Neonatology, Department of Pediatrics, Medical University of Graz, Austria Auenbruggerplatz 34/2, 8036 Graz, Austria
- Division of Pediatric Cardiology, Department of Pediatrics, Medical University of Graz, 8036 Graz, Austria
| | - Charlotte Neumann
- Diagnostic & Research Institute of Hygiene, Microbiology and Environmental Medicine, Medical University Graz, 8010 Graz, Austria
| | - Christine Moissl-Eichinger
- Diagnostic & Research Institute of Hygiene, Microbiology and Environmental Medicine, Medical University Graz, 8010 Graz, Austria
- Biotechmed Graz, 8010 Graz, Austria
| | - Raimund Kraschl
- Department of Pediatrics, General Hospital Klagenfurt am Wörthersee, 9020 Klagenfurt, Austria
| | - Claudia Kanduth
- Department of Pediatrics, General Hospital Klagenfurt am Wörthersee, 9020 Klagenfurt, Austria
| | - Barbara Hopfer
- Department of Pediatrics, General Hospital Hochsteiermark, 8700 Leoben, Austria
| | - Manuela-Raluca Pausan
- Diagnostic & Research Institute of Hygiene, Microbiology and Environmental Medicine, Medical University Graz, 8010 Graz, Austria
| | - Berndt Urlesberger
- Division of Neonatology, Department of Pediatrics, Medical University of Graz, Austria Auenbruggerplatz 34/2, 8036 Graz, Austria
| | - Bernhard Resch
- Division of Neonatology, Department of Pediatrics, Medical University of Graz, Austria Auenbruggerplatz 34/2, 8036 Graz, Austria
- Research Unit for Neonatal Infectious Diseases and Epidemiology, Medical University of Graz, 8036 Graz, Austria
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Comparison of institutional guidelines with established early onset sepsis risk calculator in reducing antibiotic use in an inner-city NICU in US. J Glob Antimicrob Resist 2020; 21:124-129. [PMID: 32234556 DOI: 10.1016/j.jgar.2020.03.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 03/17/2020] [Accepted: 03/19/2020] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES Early onset sepsis (EOS) incidence has decreased since national guidelines and intrapartum prophylaxis were introduced. However, there has been a rising concern in antibiotic overtreatment for suspicion of EOS. A web-based EOS calculator has recently been used to evaluate the risk in newborns ≥34 weeks. Our purpose was to compare local strategies with the EOS calculator in our setting with an EOS incidence of 2/1000 live births. METHODS A retrospective review of all newborns born ≥34 weeks from 1 January 2016 to 31 December 2017 was completed after receiving IRB approval. We applied the calculator to those eligible using an EOS incidence of 0.6/1000 and 2/1000 live births and divided the patients into four cohorts. The rate of antibiotic use was compared between local evidence-based guidelines and the EOS calculator. RESULTS Of the 1367 newborns included in the study, 679 received antibiotics. Over the 2 years, antibiotic utilization decreased by 38%. The calculator would have recommended antibiotics for 468 patients (31% decrease) for an EOS incidence of 0.6/1000, but with a 2/1000 incidence rate the calculator recommended antibiotics for 673 patients (1% decrease). CONCLUSIONS The EOS calculator has been helpful in optimizing antibiotic use, but its use may result in suboptimal treatment without the knowledge of local EOS incidence. Our local antibiotic stewardship guidelines seemed to be comparable to the EOS calculator, especially by the last 6 months of the study period.
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22
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Chen C, Yin Q, Wu H, Cheng L, Kwon JI, Jin J, Han T, Che H. Different Effects of Premature Infant Formula and Breast Milk on Intestinal Microecological Development in Premature Infants. Front Microbiol 2020; 10:3020. [PMID: 32010090 PMCID: PMC6978717 DOI: 10.3389/fmicb.2019.03020] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 12/17/2019] [Indexed: 01/07/2023] Open
Abstract
Intestinal microecology has been shown to participate in the pathogenesis of many diseases through different pathways, and the intestinal microecology of premature infants is significantly different from full-term infants. Intestinal microecology in premature infants is affected by various factors such as gestational age, diet, antibiotic use. However, there are few studies focus on the effects of diet on intestinal microecological development in premature infants. This study explored the different effects of the formula milk (FM) and breast milk (BM) for the development of intestinal microecology in premature infants. The results showed that BM feeding increases the alpha diversity of the intestinal flora, however, FM feeding contributes to the increase in short-chain fatty acids (SCFAs) in the gut of preterm infants. The growth environment has an important influence on the β diversity of intestinal microecology, the genomic function, and the evolution of intestinal microecology in premature infants. The intestinal microecology in premature infants is significantly associated with gestational age and weight gain. This study explored the effects of feeding methods and growth environment on intestinal microecology in premature infants, and provided a basis for promoting the healthy development of premature infants.
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Affiliation(s)
- Cheng Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Qiuyue Yin
- Department of Neonatology, Nanpi County People's Hospital, Cangzhou, China
| | - Hui Wu
- Department of Neonatology, Peking University Third Hospital, Beijing, China
| | - Lei Cheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Jung-Il Kwon
- Maeil Innovation Center, Maeil Dairies Co., Ltd., Seoul, South Korea
| | - Juan Jin
- Maeil Innovation Center, Maeil Dairies Co., Ltd., Seoul, South Korea
| | - Tongyan Han
- Department of Neonatology, Peking University Third Hospital, Beijing, China
| | - Huilian Che
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
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23
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Ville A, Levine E, Zhi D, Lararia B, Wojcicki JM. Alterations in the Gut Microbiome at 6 Months of Age in Obese Latino Infants. J Am Coll Nutr 2020; 39:47-53. [PMID: 31498715 PMCID: PMC6949412 DOI: 10.1080/07315724.2019.1606744] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/16/2019] [Accepted: 04/09/2019] [Indexed: 01/28/2023]
Abstract
Objective: To investigate gut microbial composition in Latino infants in relation to breastfeeding, obesity, and antibiotic exposure.Method: We analyzed the gut microbiome in 6-month-old Latino infants from an ongoing urban mother-child cohort. Alpha and beta diversity were assessed in relation to infants' early dietary exposure and anthropometrics including obesity.Results: Infants exclusively breastfed at 4 to 6 weeks had lower alpha diversity and less bacterial abundance compared with those who did not. Breastfeeding status at 4 to 6 weeks and 6 months of age accounted for differences in alpha and beta diversity. Infants who were obese at 6 months of age had higher levels of alpha diversity compared with non-obese infants.Conclusions: Early exclusive breastfeeding and obesity impacts microbial diversity by 6 months of age in Latino infants, a group at high risk for future obesity.
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Affiliation(s)
- Annette Ville
- Department of Pediatrics, University of California San Francisco, San Francisco, California, USA
- School of Medicine, University of Florida, Gainesville, Florida, USA
| | - Emma Levine
- Department of Pediatrics, University of California San Francisco, San Francisco, California, USA
| | - Degui Zhi
- School of Biomedical Informatics, University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Barbara Lararia
- School of Public Health, University of California Berkeley, California, USA
| | - Janet M Wojcicki
- Department of Pediatrics, University of California San Francisco, San Francisco, California, USA
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24
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Li H, Xiao B, Zhang Y, Xiao S, Luo J, Huang W. Impact of maternal intrapartum antibiotics on the initial oral microbiome of neonates. Pediatr Neonatol 2019; 60:654-661. [PMID: 31056339 DOI: 10.1016/j.pedneo.2019.03.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 01/15/2019] [Accepted: 03/21/2019] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES Prior studies have proposed that maternal intrapartum antibiotic exposure shapes the gut microbiota and, subsequently the child's health. However, the effect of maternal intrapartum antibiotic exposure and its influence on the development of the neonatal oral microbiota in early infancy has not yet been reported. The aim of this study was to compare the initial oral microbiota immediately after birth of healthy infants with and without intrapartum antibiotic exposure. METHODS Twenty-two newborns of the BaoAn Maternal and Child Care Hospital (Shenzhen, China) were recruited for this study, 11 born to mothers without intrapartum antibiotic exposure (NT group) and 11 to mothers with intrapartum antibiotic prophylaxis with cefamezin (AT group). Oral microbiome profiles were determined by 16S rRNA sequencing based on the V3V4 hyper-variable regions. RESULTS Phylum Firmicutes was most frequently detected in subjects both groups and a higher frequency was observed in the NT group than the AT group. Phyla Actinobacteria, Bacteroidetes and Proteobacteria were more abundant after intrapartum antibiotics exposure. Genus Lactobacillus belonging to Firmicutes was predominant in the neonates not exposed to antibiotics, while significantly higher percentages of genera Klebsiella, Roseburia, Propionibacterium, Faecalibacterium, Escherichia/Shigella, Corynebacterium, Bifidobacterium, and Bacteroides were noted in AT infants than NT infants. Further function analysis demonstrated that lipopolysaccharide biosynthesis and amino acid-related metabolic function was enriched in the AT group, and carbohydrate metabolism pathways were more abundant in the NT group. CONCLUSIONS These findings revealed distinctions in both taxa and metabolic function of oral microbiota between antibiotics-treated and unexposed groups, which indicated that maternal intrapartum antibiotic treatment is a key regulator of the initial neonatal oral microbiome.
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Affiliation(s)
- Hongping Li
- Shenzhen Children's Hospital, Shenzhen, 518000, China
| | - Bin Xiao
- Shenzhen Baoan Maternal and Child Health Hospital, Shenzhen, 518000, China
| | - Yong Zhang
- Guangdong Maternal and Child Health Hospital, Guangzhou, 51000, China
| | - Shanqiu Xiao
- Shenzhen Baoan Maternal and Child Health Hospital, Shenzhen, 518000, China
| | - Jun Luo
- Shenzhen Baoan Maternal and Child Health Hospital, Shenzhen, 518000, China
| | - Weimin Huang
- Shenzhen Children's Hospital, Shenzhen, 518000, China.
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25
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Jiang L, Feng C, Tao S, Li N, Zuo B, Han D, Wang J. Maternal imprinting of the neonatal microbiota colonization in intrauterine growth restricted piglets: a review. J Anim Sci Biotechnol 2019; 10:88. [PMID: 31737268 PMCID: PMC6844051 DOI: 10.1186/s40104-019-0397-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 10/10/2019] [Indexed: 12/18/2022] Open
Abstract
Early colonization of intestinal microbiota during the neonatal stage plays an important role on the development of intestinal immune system and nutrients absorption of the host. Compared to the normal birth weight (NBW) piglets, intrauterine growth restricted (IUGR) piglets have a different intestinal microbiota during their early life, which is related to maternal imprinting on intestinal microbial succession during gestation, at birth and via suckling. Imbalanced allocation of limited nutrients among fetuses during gestation could be one of the main causes for impaired intestinal development and microbiota colonization in neonatal IUGR piglets. In this review, we summarized the potential impact of maternal imprinting on the colonization of the intestinal microbiota in IUGR piglets, including maternal undernutrition, imbalanced allocation of nutrients among fetuses, as well as vertical microbial transmission from mother to offspring during gestation and lactation. At the same time, we give information about the current maternal nutritional strategies (mainly breastfeeding, probiotics and prebiotics) to help colonization of the advantageous intestinal microbiota for IUGR piglets.
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Affiliation(s)
- Lili Jiang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Cuiping Feng
- Department of Obstetrics and Gynecology, China-Japan Friendship Hospital, Beijing, 100029 China
| | - Shiyu Tao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Na Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Bin Zuo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Dandan Han
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
| | - Junjun Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193 China
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Impact of Integrating a Neonatal Early-Onset Sepsis Risk Calculator into the Electronic Health Record. Pediatr Qual Saf 2019; 4:e235. [PMID: 32010861 PMCID: PMC6946229 DOI: 10.1097/pq9.0000000000000235] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 10/18/2019] [Indexed: 11/25/2022] Open
Abstract
Investigators from Kaiser Permanente developed a risk-assessment calculator as a tool for evaluation of early-onset sepsis (EOS) to narrow antibiotic use for the treatment of EOS. The integration of the EOS risk calculator into an electronic health record will minimize manual calculations and data entry and improve compliance and accuracy through automation.
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Sloane AJ, Coleman C, Carola DL, Lafferty MA, Edwards C, Greenspan J, Aghai ZH. Use of a Modified Early-Onset Sepsis Risk Calculator for Neonates Exposed to Chorioamnionitis. J Pediatr 2019; 213:52-57. [PMID: 31208783 DOI: 10.1016/j.jpeds.2019.04.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 04/19/2019] [Accepted: 04/30/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To validate the recently modified Kaiser Permanente early-onset sepsis (EOS) calculator with a higher baseline incidence in chorioamnionitis exposed neonates. STUDY DESIGN This is a retrospective study of chorioamnionitis-exposed neonates born at ≥35 weeks of gestation with a known EOS incidence of 4.3/1000. The risk and management categories were calculated using the calculator with an incidence of 4/1000. The results were compared with a previous analysis of the same cohort that used an EOS incidence of 0.5/1000. RESULTS In our sample, the EOS calculator recommends at least a blood culture in 834 of 896 (93.1%) and empiric antibiotics in 533 of 896 (59.5%) chorioamnionitis-exposed neonates when using an EOS incidence of 4/1000. This captures 5 of 5 neonates (100%) with EOS. When using a baseline EOS incidence of 0.5/1000, the calculator recommends at least a blood culture in only 289 of 896 (32.2%) and empiric antibiotics in only 209 of 896 (23.3%) neonates, but fails to recommend empiric antibiotics in 2 of 5 neonates with EOS (40%). CONCLUSIONS When using an EOS risk of 4 of 1000 in infants exposed to mothers with chorioamnionitis, the EOS calculator has the ability to capture an increased number of neonates with culture-positive EOS. However, this change also leads to nearly a 3-fold increase in the use of empiric antibiotics and an evaluation with blood culture in almost all infants born to mothers with chorioamnionitis.
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Affiliation(s)
- Amy J Sloane
- Division of Neonatology, Department of Pediatrics, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Cassandra Coleman
- Division of Neonatology, Department of Pediatrics, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - David L Carola
- Division of Neonatology, Department of Pediatrics, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Margaret A Lafferty
- Division of Neonatology, Department of Pediatrics, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Caroline Edwards
- Division of Neonatology, Department of Pediatrics, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Jay Greenspan
- Division of Neonatology, Department of Pediatrics, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Zubair H Aghai
- Division of Neonatology, Department of Pediatrics, Thomas Jefferson University/Nemours, Philadelphia, PA.
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Videnska P, Smerkova K, Zwinsova B, Popovici V, Micenkova L, Sedlar K, Budinska E. Stool sampling and DNA isolation kits affect DNA quality and bacterial composition following 16S rRNA gene sequencing using MiSeq Illumina platform. Sci Rep 2019; 9:13837. [PMID: 31554833 PMCID: PMC6761292 DOI: 10.1038/s41598-019-49520-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 08/22/2019] [Indexed: 12/30/2022] Open
Abstract
Many studies correlate changes in human gut microbiome with the onset of various diseases, mostly by 16S rRNA gene sequencing. Setting up the optimal sampling and DNA isolation procedures is crucial for robustness and reproducibility of the results. We performed a systematic comparison of several sampling and DNA isolation kits, quantified their effect on bacterial gDNA quality and the bacterial composition estimates at all taxonomic levels. Sixteen volunteers tested three sampling kits. All samples were consequently processed by two DNA isolation kits. We found that the choice of both stool sampling and DNA isolation kits have an effect on bacterial composition with respect to Gram-positivity, however the isolation kit had a stronger effect than the sampling kit. The proportion of bacteria affected by isolation and sampling kits was larger at higher taxa levels compared to lower taxa levels. The PowerLyzer PowerSoil DNA Isolation Kit outperformed the QIAamp DNA Stool Mini Kit mainly due to better lysis of Gram-positive bacteria while keeping the values of all the other assessed parameters within a reasonable range. The presented effects need to be taken into account when comparing results across multiple studies or computing ratios between Gram-positive and Gram-negative bacteria.
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Affiliation(s)
- Petra Videnska
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Kristyna Smerkova
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Barbora Zwinsova
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Vlad Popovici
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Lenka Micenkova
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Karel Sedlar
- Department of Biomedical Engineering, Brno University of Technology, Technicka 12, Brno, Czech Republic
| | - Eva Budinska
- RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.
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Utilization of a Neonatal Early-Onset Sepsis Calculator to Guide Initial Newborn Management. Pediatr Qual Saf 2019; 4:e214. [PMID: 31745517 PMCID: PMC6831045 DOI: 10.1097/pq9.0000000000000214] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 08/14/2019] [Indexed: 12/12/2022] Open
Abstract
Within our hospital system, all infants born to mothers with chorioamnionitis were directly admitted to the neonatal intensive care unit (NICU) for evaluation and treatment of presumed sepsis for a minimum of 48 hours, regardless of clinical appearance. Implementation of a risk-stratification system for thesWe high-risk infants based on the early onset sepsis (EOS) calculator may decrease NICU admissions and antibiotics exposure in well-appearing neonates. Methods We used The Model for Improvement as a framework for designing this initiative. Participants were inborn infants 35 weeks and older born to mothers with chorioamnionitis and/or fever. Plan Do Study Act (PDSA) cycles were utilized to educate staff, monitor for sepsis, and follow adherence to the calculator in the newborn nursery. Results From June 2015 to June 2016, there were 312 at-risk infants identified and evaluated on the EOS calculator. Of these 312 infants, 228 did not require admission to the NICU based on their risk assessment using the online calculator. Implementation of the Kaiser EOS calculator protocol for at-risk infants decreased NICU admission rates, decreased practitioner practice variability, decreased the number of painful procedures, promoted family bonding, resulted in higher breastfeeding rates at hospital discharge, diminished financial burden, and promoted antibiotic stewardship. Conclusion This study demonstrates that the implementation of the sepsis risk calculator at an academic medical center can decrease the number of asymptomatic infants transferred to the NICU for empiric antibiotic treatment.
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30
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Ribeiro R, Nicoli JR, Santos G, Lima-Santos J. Impact of vitamin deficiency on microbiota composition and immunomodulation: relevance to autistic spectrum disorders. Nutr Neurosci 2019; 24:601-613. [PMID: 31506005 DOI: 10.1080/1028415x.2019.1660485] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
OBJECTIVES Inappropriate vitamin supply is a public health problem and is related to abnormalities in brain development, immune response and, more recently, in changes of gut microbial composition. It is known that low levels of vitamin in early life are linked to increased susceptibility to neurodevelopmental disorders, such as Autism Spectrum Disorders (ASD). Unfortunately, the possible peripheral influences of vitamin deficiency that leads to alterations in the gut microbiota-immune-brain axis, one important modulator of the ASD pathology, remain unclear. This narrative review discusses how the impact of vitamin deficiency results in changes in the immune regulation and in the gut microbiota composition, trying to understand how these changes may contribute for the development and severity of ASD. METHODS The papers were selected using Pubmed and other databases. This review discusses the following topics: (1) vitamin deficiency in alterations of central nervous system in autism, (2) the impact of low levels of vitamins in immunomodulation and how it can favor imbalance in gut microbiota composition and gastrointestinal (GI) disturbances, (3) gut microbiota imbalance/inflammation associated with the ASD pathophysiology, and (4) possible evidences of the role of vitamin deficiency in dysfunctional gut microbiota-immune-brain axis in ASD. RESULTS Studies indicate that hypovitaminosis A, B12, D, and K have been co-related with the ASD neuropathology. Furthermore, it was shown that low levels of these vitamins favor the Th1/Th17 environment in the gut, as well as the growth of enteropathogens linked to GI disorders. DISCUSSION GI disorders and alterations in the gut microbiota-immune-brain axis seems to be linked with ASD severity. Although unclear, hypovitaminosis appears to regulate peripherally the ASD pathophysiology by modulating the gut microbiota-immune-brain axis, however, more research is still necessary to confirm this hypothesis.
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Affiliation(s)
- Roberta Ribeiro
- Departament of Biologic Sciences, State University of Santa Cruz, Ilheus, Brazil
| | - Jacques Robert Nicoli
- Departament of Microbiology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Gesivaldo Santos
- Departament of Biologic Sciences, State University of the Southwest of Bahia, Jequie, Brazil
| | - Jane Lima-Santos
- Departament of Biologic Sciences, State University of Santa Cruz, Ilheus, Brazil
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Liu J, Li Y, Feng Y, Pan L, Xie Z, Yan Z, Zhang L, Li M, Zhao J, Sun J, Hong L. Patterned progression of gut microbiota associated with necrotizing enterocolitis and late onset sepsis in preterm infants: a prospective study in a Chinese neonatal intensive care unit. PeerJ 2019; 7:e7310. [PMID: 31367483 PMCID: PMC6657676 DOI: 10.7717/peerj.7310] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 06/17/2019] [Indexed: 12/25/2022] Open
Abstract
Necrotizing enterocolitis (NEC) and late-onset sepsis (LOS) are two common premature birth complications with high morbidity and mortality. Recent studies in Europe and America have linked gut microbiota dysbiosis to their etiology. However, similar studies in Asian populations remain scant. In this pilot study, we profiled gut microbiota of 24 Chinese preterm infants from birth till death or discharge from NICU. Four of them developed NEC and three developed LOS. Unexpectedly, we detected highly-diversified microbiota with similar compositions in all patients shortly after birth. However, as patients aged, the microbial diversities in case groups differed significantly from that of the control group. These differences emerged after the third day of life and persisted throughout the course of both NEC and LOS. Using a Zero-Inflated Beta Regression Model with Random Effects (ZIBR), we detected higher Bacillus (p = 0.032) and Solibacillus (p = 0.047) before the onset of NEC and LOS. During NEC progression, Enterococcus, Streptococcus and Peptoclostridium were the dominant genera while during LOS progression; Klebsiella was the only dominant genus that was also detected by the diagnostic hemoculture. These results warrant further studies to identify causative microbial patterns and underlying mechanisms.
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Affiliation(s)
- Jiayi Liu
- Department of Clinical Nutrition, Shanghai Children's Medical Center, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Yuqing Li
- Department of Clinical Nutrition, Shanghai Children's Medical Center, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Yi Feng
- Department of Clinical Nutrition, Shanghai Children's Medical Center, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Liya Pan
- Department of Clinical Nutrition, Shanghai Children's Medical Center, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Zhoulonglong Xie
- Department of Surgery, Shanghai Children's Medical Center, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Zhilong Yan
- Department of Surgery, Shanghai Children's Medical Center, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Li Zhang
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Mingkun Li
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, China
| | - Jianhua Zhao
- Shanghai Majorbio Bio-pharm Technology Co., Ltd, Shanghai, China
| | - Jianhua Sun
- Department of Neonatology, Shanghai Children's Medical Center, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Li Hong
- Department of Clinical Nutrition, Shanghai Children's Medical Center, School of Medicine Shanghai Jiao Tong University, Shanghai, China
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Borewicz K, Gu F, Saccenti E, Arts IC, Penders J, Thijs C, van Leeuwen SS, Lindner C, Nauta A, van Leusen E, Schols HA, Smidt H. Correlating Infant Fecal Microbiota Composition and Human Milk Oligosaccharide Consumption by Microbiota of 1-Month-Old Breastfed Infants. Mol Nutr Food Res 2019; 63:e1801214. [PMID: 31017343 PMCID: PMC6618098 DOI: 10.1002/mnfr.201801214] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 04/02/2019] [Indexed: 01/11/2023]
Abstract
SCOPE Understanding the biological functions of human milk oligosaccharides (HMOs) in shaping gastrointestinal (GI) tract microbiota during infancy is of great interest. A link between HMOs in maternal milk and infant fecal microbiota composition is examined and the role of microbiota in degrading HMOs within the GI tract of healthy, breastfed, 1-month-old infants is investigated. METHODS AND RESULTS Maternal breast milk and infant feces are from the KOALA Birth Cohort. HMOs are quantified in milk and infant fecal samples using liquid chromatography-mass spectrometry. Fecal microbiota composition is characterized using Illumina HiSeq 16S rRNA gene amplicon sequencing. The composition is associated with gender, delivery mode, and milk HMOs: Lacto-N-fucopentaose I and 2'-fucosyllactose. Overall, Bifidobacterium, Bacteroides, Escherichia-Shigella, and Parabacteroides are predominating genera. Three different patterns in infant fecal microbiota structure are detected. GI degradation of HMOs is strongly associated with fecal microbiota composition, and there is a link between utilization of specific HMOs and relative abundance of various phylotypes (operational taxonomic units). CONCLUSIONS HMOs in maternal milk are among the important factors shaping GI tract microbiota in 1-month-old breastfed infants. An infant's ability to metabolize different HMOs strongly correlates with fecal microbiota composition and specifically with phylotypes within genera Bifidobacterium, Bacteroides, and Lactobacillus.
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Affiliation(s)
- Klaudyna Borewicz
- Laboratory of MicrobiologyWageningen University & ResearchStippeneng 46708 WEWageningenThe Netherlands
| | - Fangjie Gu
- Laboratory of Food ChemistryWageningen University & ResearchBornse Weilanden 96708 WGWageningenThe Netherlands
| | - Edoardo Saccenti
- Laboratory of Systems and Synthetic BiologyWageningen University & ResearchStippeneng 46708 WEWageningenThe Netherlands
| | - Ilja C.W. Arts
- Department of EpidemiologyCAPHRI Care and Public Health Research InstituteMaastricht UniversityMinderbroedersberg 4–66211 LKMaastrichtThe Netherlands
- Department of EpidemiologyCARIM School for Cardiovascular Diseases, Maastricht UniversityUniversiteitssingel 506229 ERMaastrichtThe Netherlands
- Maastricht Center for Systems Biology (MaCSBio)Universiteitssingel 606229 ERMaastrichtThe Netherlands
| | - John Penders
- Department of EpidemiologyCAPHRI Care and Public Health Research InstituteMaastricht UniversityMinderbroedersberg 4–66211 LKMaastrichtThe Netherlands
- Department of Medical MicrobiologyMaastricht University Medical CentreP. Debyelaan 256229 HXMaastrichtThe Netherlands
- NUTRIM School for Nutrition, Toxicology and MetabolismUniversiteitssingel 406229 ERMaastrichtThe Netherlands
| | - Carel Thijs
- Department of EpidemiologyCAPHRI Care and Public Health Research InstituteMaastricht UniversityMinderbroedersberg 4–66211 LKMaastrichtThe Netherlands
| | - Sander S. van Leeuwen
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB)University of GroningenNijenborgh 79747 AGGroningenThe Netherlands
| | - Cordula Lindner
- FrieslandCampina Innovation CentreBronland 206708 WHWageningenThe Netherlands
| | - Arjen Nauta
- FrieslandCampina Innovation CentreBronland 206708 WHWageningenThe Netherlands
| | - Ellen van Leusen
- FrieslandCampina Innovation CentreBronland 206708 WHWageningenThe Netherlands
| | - Henk A. Schols
- Laboratory of Food ChemistryWageningen University & ResearchBornse Weilanden 96708 WGWageningenThe Netherlands
| | - Hauke Smidt
- Laboratory of MicrobiologyWageningen University & ResearchStippeneng 46708 WEWageningenThe Netherlands
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Clarke J, Tighe MP. Fifteen-minute consultation on the healthy child: Bowel habit in infants and children. Arch Dis Child Educ Pract Ed 2019; 104:114-119. [PMID: 30072449 DOI: 10.1136/archdischild-2018-315162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 07/02/2018] [Accepted: 07/03/2018] [Indexed: 12/20/2022]
Abstract
A common presentation to the general paediatric clinic is a child or young person's difficult bowel habit, which is often a potent source of anxiety for parents and carers. A large proportion of these children will have a functional cause for their symptoms, with unnecessary investigation and non-evidence-based treatments adding to their difficulties. This article aims to explain what encompasses the normal bowel habit in children and young people, reassure where appropriate and identify those patterns that may be suggestive of a disorder or disease requiring treatment. We illustrate both extremes of the spectrum of normal bowel habit in children with two case studies.
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Affiliation(s)
- Joely Clarke
- Department of Child Health, University Hospital Southampton NHS Foundation Trust, Southampton, UK
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Escribano E, Saralegui C, Moles L, Montes MT, Alba C, Alarcón T, Lázaro-Perona F, Rodríguez JM, Sáenz de Pipaón M, Del Campo R. Influence of a Serratia marcescens outbreak on the gut microbiota establishment process in low-weight preterm neonates. PLoS One 2019; 14:e0216581. [PMID: 31112570 PMCID: PMC6529157 DOI: 10.1371/journal.pone.0216581] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 04/25/2019] [Indexed: 02/07/2023] Open
Abstract
Adequate gut microbiota establishment is important for lifelong health. The aim was to sequentially analyze the gut microbiota establishment in low-birth-weight preterm neonates admitted to a single neonatal intensive care unit during their first 3 weeks of life, comparing two epidemiological scenarios. Seven control infants were recruited, and another 12 during a severe S. marcescens outbreak. Meconium and feces from days 7, 14, and 21 of life were collected. Gut microbiota composition was determined by 16S rDNA massive sequencing. Cultivable isolates were genotyped by pulsed-field gel electrophoresis, with four S. marcescens submitted for whole-genome sequencing. The expected bacterial ecosystem expansion after birth is delayed, possibly related to antibiotic exposure. The Proteobacteria phylum dominates, although with marked interindividual variability. The outbreak group considerably differed from the control group, with higher densities of Escherichia coli and Serratia to the detriment of Enterococcus and other Firmicutes. Curiously, obligate predators were only detected in meconium and at very low concentrations. Genotyping of cultivable bacteria demonstrated the high bacterial horizontal transmission rate that was confirmed with whole-genome sequencing for S. marcescens. Preterm infants admitted at NICU are initially colonized by homogeneous microbial communities, most of them from the nosocomial environment, which subsequently evolve according to the individual conditions. Our results demonstrate the hospital epidemiology pressure, particularly during outbreak situations, on the gut microbiota establishing process.
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Affiliation(s)
- Esperanza Escribano
- Servicio de Neonatología, Hospital Universitario La Paz, and Universidad Autónoma de Madrid, Madrid, Spain
| | - Claudia Saralegui
- Servicio de Microbiología y Parasitología, Hospital Universitario Ramón y Cajal, and Instituto Ramón y Cajal de Investigaciones Sanitarias (IRYCIS), Madrid, Spain
| | - Laura Moles
- Servicio de Microbiología y Parasitología, Hospital Universitario Ramón y Cajal, and Instituto Ramón y Cajal de Investigaciones Sanitarias (IRYCIS), Madrid, Spain.,Departamento de Bromatología, Facultad de Veterinaria Nutrición y Ciencia de los Alimentos, Universidad Complutense de Madrid, Madrid, Spain
| | - María Teresa Montes
- Servicio de Neonatología, Hospital Universitario La Paz, and Universidad Autónoma de Madrid, Madrid, Spain
| | - Claudio Alba
- Servicio de Microbiología, Hospital Universitario La Princesa, and Universidad Autónoma de Madrid, Madrid, Spain
| | - Teresa Alarcón
- Servicio de Microbiología, Hospital Universitario La Princesa, and Universidad Autónoma de Madrid, Madrid, Spain
| | | | - Juan Miguel Rodríguez
- Departamento de Bromatología, Facultad de Veterinaria Nutrición y Ciencia de los Alimentos, Universidad Complutense de Madrid, Madrid, Spain
| | - Miguel Sáenz de Pipaón
- Servicio de Neonatología, Hospital Universitario La Paz, and Universidad Autónoma de Madrid, Madrid, Spain.,Red de Salud Materno Infantil y del Desarrollo, Instituto de Salud Carlos III, Madrid, Spain
| | - Rosa Del Campo
- Servicio de Microbiología y Parasitología, Hospital Universitario Ramón y Cajal, and Instituto Ramón y Cajal de Investigaciones Sanitarias (IRYCIS), Madrid, Spain
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Mehrian-Shai R, Reichardt JKV, Harris CC, Toren A. The Gut-Brain Axis, Paving the Way to Brain Cancer. Trends Cancer 2019; 5:200-207. [PMID: 30961828 DOI: 10.1016/j.trecan.2019.02.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 02/12/2019] [Accepted: 02/15/2019] [Indexed: 12/15/2022]
Abstract
The gut-brain axis formed by blood and lymphatic vessels paves the way for microbiota to impact the brain. Bacterial populations in the gut are a good candidate for a nongenetic factor contributing substantively to brain tumor development and to the success of therapy. Specifically, suppression of the immune system and induction of inflammation by microbiota sustain proliferative signaling, limit cell death, and induce angiogenesis as well as invasiveness. In addition, altered microbial metabolites and their levels could stimulate cell proliferation. We propose here a novel gear model connecting these complex interdisciplinary fields. Our model may impact mechanistic studies of brain cancer and better treatment outcomes through precision oncology.
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Affiliation(s)
| | - Juergen K V Reichardt
- Australian Institute for Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
| | - Curtis C Harris
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Amos Toren
- Pediatric Hemato-Oncology, Sheba Medical Center, Ramat Gan, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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36
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Borewicz K, Suarez-Diez M, Hechler C, Beijers R, de Weerth C, Arts I, Penders J, Thijs C, Nauta A, Lindner C, Van Leusen E, Vaughan EE, Smidt H. The effect of prebiotic fortified infant formulas on microbiota composition and dynamics in early life. Sci Rep 2019; 9:2434. [PMID: 30792412 PMCID: PMC6385197 DOI: 10.1038/s41598-018-38268-x] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 12/19/2018] [Indexed: 01/15/2023] Open
Abstract
Gastrointestinal (GI) microbiota composition differs between breastfed and formula-fed infants. Today's infant formulas are often fortified with prebiotics to better mimic properties of human milk with respect to its effect on GI microbiota composition and function. We used Illumina HiSeq sequencing of PCR-amplified 16S rRNA gene fragments to investigate the composition of faecal microbiota in 2-12 week old infants receiving either breastmilk, infant formulas fortified with prebiotics, or mixed feeding. We compared these results with results from infants fed traditional formulas used in the Netherlands in 2002-2003, which contained no added prebiotics. We showed that today's formulas supplemented with either scGOS (0.24-0.50 g/100 ml) or scGOS and lcFOS (at a 9:1 ratio; total 0.6 g/100 ml) had a strong bifidogenic effect as compared to traditional formulas, and they also resulted in altered patterns of microbial colonisation within the developing infant gastrointestinal tract. We identified three microbial states (or developmental stages) in the first 12 weeks of life, with a gradual transition pattern towards a bifidobacteria dominated state. In infants receiving only fortified formulas, this transition towards the bifidobacteria dominated state was accelerated, whereas in infants receiving mixed feeding the transition was delayed, as compared to exclusively breastfed infants.
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Affiliation(s)
- Klaudyna Borewicz
- Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.
| | - Maria Suarez-Diez
- Laboratory of Systems and Synthetic Biology, Wageningen & Research University, Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Christine Hechler
- Behavioral Science Institute, Radboud University, Montessorilaan 3, 6525 HR, Nijmegen, The Netherlands
| | - Roseriet Beijers
- Behavioral Science Institute, Radboud University, Montessorilaan 3, 6525 HR, Nijmegen, The Netherlands
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Kapittelweg 29, 6525 EN, Nijmegen, The Netherlands
| | - Carolina de Weerth
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Kapittelweg 29, 6525 EN, Nijmegen, The Netherlands
| | - Ilja Arts
- Department of Epidemiology, Maastricht University, Care and Public Health Research Institute, Minderbroedersberg 4-6, 6211 LK, Maastricht, The Netherlands
- CARIM School for Cardiovascular Diseases, Universiteitssingel 50 6229ER Maastricht; and Maastricht Center for Systems Biology (MaCSBio), Universiteitssingel 60, 6229 ER, Maastricht, The Netherlands
| | - John Penders
- Department of Medical Microbiology, Maastricht University Medical Center, P. Debyelaan 25, 6229HX, Maastricht, The Netherlands
- NUTRIM School for Nutrition, Toxicology and Metabolism, Universiteitssingel 40, 6229 ER, Maastricht, The Netherlands
| | - Carel Thijs
- Department of Epidemiology, Maastricht University, Care and Public Health Research Institute, Minderbroedersberg 4-6, 6211 LK, Maastricht, The Netherlands
| | - Arjen Nauta
- FrieslandCampina, Stationsplein 4, 3818 LE, Amersfoort, The Netherlands
| | - Cordula Lindner
- FrieslandCampina, Stationsplein 4, 3818 LE, Amersfoort, The Netherlands
| | - Ellen Van Leusen
- FrieslandCampina, Stationsplein 4, 3818 LE, Amersfoort, The Netherlands
| | - Elaine E Vaughan
- Sensus B.V. (Royal Cosun), Borchwerf 3, 4704 RG, Roosendaal, The Netherlands
| | - Hauke Smidt
- Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands
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He Z, Wu J, Xiao B, Xiao S, Li H, Wu K. The Initial Oral Microbiota of Neonates Among Subjects With Gestational Diabetes Mellitus. Front Pediatr 2019; 7:513. [PMID: 31921726 PMCID: PMC6914726 DOI: 10.3389/fped.2019.00513] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 11/26/2019] [Indexed: 12/25/2022] Open
Abstract
Objective: The objective was to investigate the potential effect of gestational diabetes mellitus on the initial neonatal oral microbiome community structure. Methods: Oral samples were collected from 20 full-term, vaginally delivered newborns with sterile swabs. Nine of them had mothers diagnosed with gestational diabetes mellitus (GDM group), while 11 had non-diabetic mothers (NDM group). The oral microbiota was analyzed using multi-barcode 16S rRNA sequencing on Illumina MiSeq system. Results: The results showed that the birth weight, gestational age and gestational weight gain were significantly higher in NDM group. There was a significant correlation between gestational age and birth weight. Neonatal oral microbiome was composed of five dominant phyla from Actinobacteria, Bacteroidetes, Firmicutes, Proteobacteria, and Tenericutes. Compared to NDM group, a higher alpha diversity and reduction of phylum Firmicutes were observed in GDM group. Genus Lactobacillus dominated in NDM group, while Alistipes, Streptococcus, and Faecalibacterium were overabundant in GDM group. Additionally, carbohydrate metabolism increased in NDM group, whereas amino acid metabolism, vitamin metabolism and lipopolysaccharide biosynthesis were more abundant in GDM group. Conclusions: This study showed a distinct oral microbiota profile in neonates born to mothers with GDM, which indicated that maternal diabetes status played an important role in neonatal initial oral microbiota.
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Affiliation(s)
- Zhijiang He
- Shenzhen University General Hospital, Shenzhen, China
| | - Jiaman Wu
- Affiliated Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen, China
| | - Bin Xiao
- Shenzhen Children's Hospital, Shenzhen, China
| | - Shanqiu Xiao
- Bao an Maternal and Child Health Hospital, Jinan University, Shenzhen, China
| | - Hongping Li
- Shenzhen Children's Hospital, Shenzhen, China
| | - Kaifeng Wu
- Boluo Maternal and Child Health Family Planning Service Centre, Huizhou, China
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38
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Ma B, McComb E, Gajer P, Yang H, Humphrys M, Okogbule-Wonodi AC, Fasano A, Ravel J, Viscardi RM. Microbial Biomarkers of Intestinal Barrier Maturation in Preterm Infants. Front Microbiol 2018; 9:2755. [PMID: 30487786 PMCID: PMC6246636 DOI: 10.3389/fmicb.2018.02755] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 10/29/2018] [Indexed: 12/24/2022] Open
Abstract
Intestinal barrier immaturity, or "leaky gut," is the proximate cause of susceptibility to necrotizing enterocolitis in preterm neonates. However, the impact of intestinal microbiota development on intestinal mucosal barrier maturation has not been evaluated in this population. In this study, we investigated a longitudinally sampled cohort of 38 preterm infants < 33 weeks gestation monitored for intestinal permeability (IP) and fecal microbiota during the first 2 weeks of life. Rapid decrease in IP indicating intestinal barrier function maturation correlated with significant increase in community diversity. In particular, members of the Clostridiales and Bifidobacterium were highly transcriptionally active, and progressively increasing abundance in Clostridiales was significantly associated with decreased intestinal permeability. Further, neonatal factors previously identified to promote intestinal barrier maturation, including early exclusive breastmilk feeding and shorter duration antibiotic exposure, associate with the early colonization of the intestinal microbiota by members of the Clostridiales, which altogether are associated with improved intestinal barrier function in preterm infants.
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Affiliation(s)
- Bing Ma
- Institute for Genome Sciences, Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Elias McComb
- Institute for Genome Sciences, Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Pawel Gajer
- Institute for Genome Sciences, Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Hongqiu Yang
- Institute for Genome Sciences, Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Mike Humphrys
- Institute for Genome Sciences, Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Adora C. Okogbule-Wonodi
- Department of Pediatrics and Child Health, Howard University College of Medicine, Washington, DC, United States
| | - Alessio Fasano
- Department of Pediatrics, Basic, Clinical and Translational Research, MassGeneral Hospital for Children, Boston, MA, United States
- Harvard Medical School, Boston, MA, United States
| | - Jacques Ravel
- Institute for Genome Sciences, Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Rose M Viscardi
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, United States
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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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40
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Kennedy K, Heimall J, Spergel JM. Advances in atopic dermatitis in 2017. J Allergy Clin Immunol 2018; 142:1740-1747. [PMID: 30359683 DOI: 10.1016/j.jaci.2018.10.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/07/2018] [Accepted: 10/12/2018] [Indexed: 02/01/2023]
Abstract
This review encompasses relevant scientific and clinical advances in atopic dermatitis (AD) published in 2017. These include articles from the Journal of Allergy and Clinical Immunology, as well as other prominent publications that have contributed to the emerging field, on the microenvironment of the skin and molecular patterns guiding biologic treatment strategies. The most commonly questioned and explored themes of the year included the effect of the microbiome on AD development, as well as cell signaling and symptom severity. Topics also included the description of patient-specific molecular endotypes within the larger population with AD. All of these factors will create potential opportunities to guide personalized therapy with the broadening array of topical and systemic interventions currently available, as well as providing new insights to guide the development of novel molecularly targeted therapeutics. With recent US Food and Drug Administration approval of the first wave of new targeted therapies for AD, additional information exploring the safety profiles and long-term effects of these medications was also at the forefront in 2017.
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Affiliation(s)
- Katie Kennedy
- Division of Allergy-Immunology, Children's Hospital of Philadelphia, Philadelphia, Pa.
| | - Jennifer Heimall
- Division of Allergy-Immunology, Children's Hospital of Philadelphia, Philadelphia, Pa; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pa
| | - Jonathan M Spergel
- Division of Allergy-Immunology, Children's Hospital of Philadelphia, Philadelphia, Pa; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pa
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41
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Laing B, Barnett MPG, Marlow G, Nasef NA, Ferguson LR. An update on the role of gut microbiota in chronic inflammatory diseases, and potential therapeutic targets. Expert Rev Gastroenterol Hepatol 2018; 12:969-983. [PMID: 30052094 DOI: 10.1080/17474124.2018.1505497] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The human microbiome plays a critical role in human health, having metabolic, protective, and trophic functions, depending upon its' exact composition. This composition is affected by a number of factors, including the genetic background of the individual, early life factors (including method of birth, length of breastfeeding) and nature of the diet and other environmental exposures (including cigarette smoking) and general life habits. It plays a key role in the control of inflammation, and in turn, its' composition is significantly influenced by inflammation. Areas covered: We consider metabolic, protective, and trophic functions of the microbiome and influences through the lifespan from post-partum effects, to diet later in life in healthy older adults, the effects of aging on both its' composition, and influence on health and potential therapeutic targets that may have anti-inflammatory effects. Expert commentary: The future will see the growth of more effective therapies targeting the microbiome particularly with respect to the use of specific nutrients and diets personalized to the individual.
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Affiliation(s)
- Bobbi Laing
- a Discipline of Nutrition and Dietetics, Faculty of Medical Health Sciences , The University of Auckland , Auckland , New Zealand.,b School of Nursing, Faculty of Medical and Health Sciences , The University of Auckland , Auckland , New Zealand
| | - Matthew P G Barnett
- c Food Nutrition & Health Team, Food & Bio-Based Products Group , AgResearch Limited , Palmerston North , New Zealand.,d Liggins Institute , The High-Value Nutrition National Science Challenge , Auckland , New Zealand.,e Riddet Institute , Massey University , Palmerston North , New Zealand
| | - Gareth Marlow
- f Institute of Medical Genetics , Cardiff University , Cardiff , Wales , UK
| | - Noha Ahmed Nasef
- e Riddet Institute , Massey University , Palmerston North , New Zealand.,g College of Health, Massey Institute of Food Science and Technology , Palmerston North , New Zealand
| | - Lynnette R Ferguson
- a Discipline of Nutrition and Dietetics, Faculty of Medical Health Sciences , The University of Auckland , Auckland , New Zealand.,h Auckland Cancer Research Society, Faculty of Medical and Health Sciences, Grafton Campus , The University of Auckland , Auckland , New Zealand
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42
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Carola D, Vasconcellos M, Sloane A, McElwee D, Edwards C, Greenspan J, Aghai ZH. Utility of Early-Onset Sepsis Risk Calculator for Neonates Born to Mothers with Chorioamnionitis. J Pediatr 2018; 195:48-52.e1. [PMID: 29275925 DOI: 10.1016/j.jpeds.2017.11.045] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/15/2017] [Accepted: 11/20/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVES To evaluate the performance of the early-onset sepsis (EOS) risk calculator in a cohort of neonates born to mothers with clinical chorioamnionitis, and to compare the diagnostic utility of the EOS calculator, clinical signs, and laboratory evaluations for correctly identifying EOS in this cohort. STUDY DESIGN This was a retrospective study of neonates born at ≥35 weeks of gestation to mothers with chorioamnionitis. The risk and management categories for all neonates were calculated using the EOS calculator, and these results were analyzed and compared with laboratory data and clinical signs. RESULTS Of the 1159 neonates born to mothers with chorioamnionitis, 5 (0.43%) had culture-proven EOS. Data for calculation of EOS risk were available for 896 neonates, including the 5 neonates with culture-proven EOS. The management recommendation based on the calculator was no empiric antibiotic treatment for 67% of the neonates, including 2 of the 5 with EOS. All neonates with culture-proven EOS had abnormal complete blood counts and C-reactive protein levels at 6-12 hours. Three of the 5 neonates with EOS had clinical signs of sepsis. CONCLUSIONS The risk of EOS in neonates born to mothers with chorioamnionitis is low. The use of an EOS calculator may reduce the use of empiric antibiotics in chorioamnionitis-exposed neonates, but in our cohort, some neonates with culture-confirmed EOS would have been missed. A larger study is needed to evaluate whether limiting antibiotics to chorioamnionitis-exposed neonates with clinical and/or laboratory signs of infection can safely decrease antibiotic use.
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Affiliation(s)
- David Carola
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Mansi Vasconcellos
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Amy Sloane
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Dorothy McElwee
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Caroline Edwards
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Jay Greenspan
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA
| | - Zubair H Aghai
- Pediatrics/Neonatology, Thomas Jefferson University/Nemours, Philadelphia, PA.
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43
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Denning NL, Prince JM. Neonatal intestinal dysbiosis in necrotizing enterocolitis. Mol Med 2018; 24:4. [PMID: 30134786 PMCID: PMC6016883 DOI: 10.1186/s10020-018-0002-0] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 02/13/2018] [Indexed: 12/11/2022] Open
Abstract
Necrotizing Enterocolitis (NEC) is one of the most devastating gastrointestinal diseases in neonates, particularly among preterm infants in whom surgical NEC is the leading cause of morbidity. NEC pathophysiology occurs in the hyper-reactive milieu of the premature gut after bacterial colonization. The resultant activation of the TLR4 pathway appears to be a strongly contributing factor. Advancements in metagenomics may yield new clarity to the relationship between the neonatal intestinal microbiome and the development of NEC. After a century without effective directed treatments, microbiome manipulation offers a promising therapeutic target for the prevention and treatment of this devastating disease.
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Affiliation(s)
- Naomi-Liza Denning
- Division of Pediatric Surgery, Zucker School of Medicine at Hofstra/Northwell, Cohen Children's Medical Center, 269-01 76th Avenue, CH 158, New Hyde Park, New York, NY, 11040, USA. .,Feinstein Institute for Medical Research, Manhasset, NY, 11030, USA.
| | - Jose M Prince
- Division of Pediatric Surgery, Zucker School of Medicine at Hofstra/Northwell, Cohen Children's Medical Center, 269-01 76th Avenue, CH 158, New Hyde Park, New York, NY, 11040, USA.,Feinstein Institute for Medical Research, Manhasset, NY, 11030, USA.,Trauma Institute, Northwell Health System, Manhasset, NY, 11030, USA
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44
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Eagles-Smith CA, Silbergeld EK, Basu N, Bustamante P, Diaz-Barriga F, Hopkins WA, Kidd KA, Nyland JF. Modulators of mercury risk to wildlife and humans in the context of rapid global change. AMBIO 2018; 47:170-197. [PMID: 29388128 PMCID: PMC5794686 DOI: 10.1007/s13280-017-1011-x] [Citation(s) in RCA: 185] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Environmental mercury (Hg) contamination is an urgent global health threat. The complexity of Hg in the environment can hinder accurate determination of ecological and human health risks, particularly within the context of the rapid global changes that are altering many ecological processes, socioeconomic patterns, and other factors like infectious disease incidence, which can affect Hg exposures and health outcomes. However, the success of global Hg-reduction efforts depends on accurate assessments of their effectiveness in reducing health risks. In this paper, we examine the role that key extrinsic and intrinsic drivers play on several aspects of Hg risk to humans and organisms in the environment. We do so within three key domains of ecological and human health risk. First, we examine how extrinsic global change drivers influence pathways of Hg bioaccumulation and biomagnification through food webs. Next, we describe how extrinsic socioeconomic drivers at a global scale, and intrinsic individual-level drivers, influence human Hg exposure. Finally, we address how the adverse health effects of Hg in humans and wildlife are modulated by a range of extrinsic and intrinsic drivers within the context of rapid global change. Incorporating components of these three domains into research and monitoring will facilitate a more holistic understanding of how ecological and societal drivers interact to influence Hg health risks.
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Affiliation(s)
| | - Ellen K. Silbergeld
- Johns Hopkin Bloomberg School of Public Health, 615 N. Wolfe Street, E6644, Baltimore, MD 21205 USA
| | - Niladri Basu
- McGill University, 204-CINE Building, Montreal, QC H9X 3V9 Canada
| | - Paco Bustamante
- University of La Rochelle, laboratory of Littoral Environment and Societies, Littoral Environnement et Sociétés (LIENSs), LIENSs UMR 7266 CNRS-Université de La Rochelle, 2 rue Olympe de Gouges, 17000 La Rochelle, France
| | - Fernando Diaz-Barriga
- Center for Applied Research in Environment and Health at, Universidad Autonoma de San Luis Potosi, Avenida Venustiano Carranza No. 2405, Col Lomas los Filtros Código Postal, 78214 San Luis Potosí, SLP Mexico
| | - William A. Hopkins
- Department of Fish and Wildlife Conservation, 310 West Campus Drive Virginia Tech, Cheatham Hall, Room 106 (MC 0321), Blacksburg, VA 24061 USA
| | - Karen A. Kidd
- Department of Biology & School of Geography and Earth Sciences, McMaster University, 1280 Main Street W., Hamilton, ON L8S 4K1 Canada
| | - Jennifer F. Nyland
- Department of Biological Sciences, 1101 Camden Ave, Salisbury, MD 21801 USA
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45
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Hamilton LF, Gillett HE, Smith-Collins A, Davis JW. A Sterile Collection Bundle Intervention Reduces the Recovery of Bacteria from Neonatal Blood Culture. Biomed Hub 2018; 3:1-7. [PMID: 31988955 PMCID: PMC6945922 DOI: 10.1159/000486703] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 01/08/2018] [Indexed: 01/15/2023] Open
Abstract
Background In neonatal intensive care, coagulase-negative Staphylococcus species can be both blood culture contaminants and pathogens. False-positive cultures can result in clinical uncertainty and unnecessary antibiotic use. Objective This study sought to assess whether a sterile blood culture collection bundle would reduce the incidence of false-positive blood cultures in a regional neonatal intensive care unit. Method Clinical data was collected from all infants who had blood cultures taken before and after the introduction of the sterile blood culture collection bundle intervention. This intervention required 2% chlorhexidine and full sterile precautions for blood culture collection. False-positive blood culture rates (presence of skin commensals and ≥3 clinical infection signs) were compared before and after the intervention. The number of days of unnecessary antibiotics associated with false-positive blood cultures was also analysed. Results In the pre-intervention group (PRE) 197 cultures were taken from 161 babies. In the post-intervention group (POST) 170 cultures from 133 babies were acquired. Baseline demographics were similar in both groups. The rate of false-positive cultures in the PRE group versus the POST group was 9/197 (4.6%) compared to 1/170 (0.6%) (p < 0.05). Unnecessary antibiotic exposure was reduced in the PRE group in comparison to the POST group (27 vs. 0 days, p < 0.01). Conclusions Implementation of sterile blood culture collection intervention reduced the number of false-positive results. This has potential benefit in reducing unnecessary antibiotic use.
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Affiliation(s)
- Linze F Hamilton
- Regional Neonatal Intensive Care Unit, St. Michael's Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - Helen E Gillett
- Regional Neonatal Intensive Care Unit, St. Michael's Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - Adam Smith-Collins
- Regional Neonatal Intensive Care Unit, St. Michael's Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, UK.,Neonatal Neuroscience, University of Bristol, Bristol, UK
| | - Jonathan W Davis
- Neonatal Clinical Care Unit, King Edward Memorial and Princess Margaret Hospitals, Perth, WA, Australia.,Centre for Neonatal Research and Education, University of Western Australia, Perth, WA, Australia
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46
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Lee YY, Hassan SA, Ismail IH, Chong SY, Raja Ali RA, Amin Nordin S, Lee WS, Majid NA. Gut microbiota in early life and its influence on health and disease: A position paper by the Malaysian Working Group on Gastrointestinal Health. J Paediatr Child Health 2017; 53:1152-1158. [PMID: 29205651 DOI: 10.1111/jpc.13640] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 05/03/2017] [Accepted: 05/28/2017] [Indexed: 12/16/2022]
Abstract
The role of gut microbiota in early life and its impact on gut health and subsequent diseases remain unclear. There is a lack of research and awareness in this area, especially in the Asia-Pacific region, including Malaysia. This paper reports the position of a Malaysian Working Group on some key issues surrounding gut microbiota in early life and its role in gut health and diseases, as well as experts' stand on probiotics and prebiotics. The group reached a consensus that certain factors, including elective caesarean; premature deliveries; complementary feeding; use of antibiotics, prebiotics and/or probiotics; and exposure to the external environmental, have an impact on gut microbiota in early life. However, as evidence is lacking, especially from the Asia-Pacific region, further studies are needed to understand how gut microbiota in early life affects subsequent diseases, including allergy, inflammatory bowel disease, obesity and infantile colic. Lastly, although beneficial in acute diarrhoeal disease and probably allergic eczema, probiotics (and/or prebiotics) should be used cautiously in other gut dysbiotic conditions until more data are available.
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Affiliation(s)
- Yeong Yeh Lee
- School of Medical Sciences, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia
| | - Siti Asma Hassan
- School of Medical Sciences, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia
| | - Intan Hakimah Ismail
- Department of Paediatrics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Sze Yee Chong
- Department of Paediatrics, Hospital Pulau Pinang, Georgetown, Pulau Pinang, Malaysia
| | - Raja Affendi Raja Ali
- Gastroenterology Unit, Department of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Syafinaz Amin Nordin
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Way Seah Lee
- Department of Paediatrics, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Noorizan Abdul Majid
- School of Medical Sciences, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia
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47
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Kurath-Koller S, Moissl-Eichinger C, Gorkiewicz G, Kraschl R, Kanduth C, Hopfer B, Urlesberger B, Resch B. Changes of intestinal microbiota composition and diversity in very low birth weight infants related to strategies of NEC prophylaxis: protocol for an observational multicentre pilot study. Pilot Feasibility Stud 2017; 3:52. [PMID: 29152325 PMCID: PMC5678711 DOI: 10.1186/s40814-017-0195-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 10/26/2017] [Indexed: 12/26/2022] Open
Abstract
Background At the Division of Neonatology, Department of Paediatrics, Medical University Graz, a unique regimen of necrotizing enterocolitis (NEC) prophylaxis in preterm infants showing a < 1500 g birth weight (i.e. very low birth weight, VLBW) is used. The regimen includes oral antibiotic and antifungal therapy and probiotic preparations as well as a standardised feeding regimen. The incidence of NEC in preterm infants treated by this regimen has been shown to be lower, reflecting 0.7% when treatment was initiated on the first day of life, compared to international incidence rates (5.1%). However, the impact of the prophylaxis regimen on the intestinal microbiome is yet unknown. Methods We here report the protocol of an observational multicentre STROBE compliant pilot study in VLBW preterm infants. Research will compare three groups as defined by different NEC prophylaxis regimens. Each centre will provide 20 infants. Stool samples will be collected every 2 days throughout the first 2 weeks of life. Samples will be stored at − 80 °C until 16S-rRNA sequencing. 16S-rRNA genes will be amplified using suitable primers (specific for bacteria, fungi and archaea) and prepared for MiSeq Sequencing. Analyses will be performed using public analysis-pipelines, such as Mothur and Qiime, thus allowing an analysis of high-throughput community sequencing data. Abundance and composition changes in intestinal microbiota will be compared between the groups throughout the first 2 weeks of life. Discussion Different surroundings at the three participating study centres, including contacts to care takers and parents, as well as feeding or medication all might influence intestinal microbiota composition and abundance. In the planned sequel study, this should be kept in mind and a more standardised process ought to be established. However, the results obtained from the presented pilot study will display the burden of bias and help to establish a more strict protocol for the future. Trial registration Trial has been registered with the German Registry for Clinical Trials (registry ID DRKS00009290). Electronic supplementary material The online version of this article (10.1186/s40814-017-0195-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Stefan Kurath-Koller
- Department of Pediatrics, Division of Neonatology, Medical University of Graz, Auenbruggerplatz 34/2, 8036 Graz, Austria
| | - Christine Moissl-Eichinger
- Section of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Medical University Graz, Graz, Austria
| | | | - Raimund Kraschl
- Department of Pediatrics, General Hospital Klagenfurt am Wörthersee, Klagenfurt am Wörthersee, Austria
| | - Claudia Kanduth
- Department of Pediatrics, General Hospital Klagenfurt am Wörthersee, Klagenfurt am Wörthersee, Austria
| | - Barbara Hopfer
- Department of Pediatrics, General Hospital of Leoben, Leoben, Austria
| | - Berndt Urlesberger
- Department of Pediatrics, Division of Neonatology, Medical University of Graz, Auenbruggerplatz 34/2, 8036 Graz, Austria
| | - Bernhard Resch
- Department of Pediatrics, Division of Neonatology, Medical University of Graz, Auenbruggerplatz 34/2, 8036 Graz, Austria
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Do bacteria shape our development? Crosstalk between intestinal microbiota and HPA axis. Neurosci Biobehav Rev 2017; 83:458-471. [PMID: 28918360 DOI: 10.1016/j.neubiorev.2017.09.016] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 09/01/2017] [Accepted: 09/12/2017] [Indexed: 02/08/2023]
Abstract
The human body contains as many bacteria in the intestine as the total number of human body cells. These bacteria have a central position in human health and disease, and would also play a role in the regulation of emotions, behavior, and even higher cognitive functions. The Hypothalamic-Pituitary-Adrenal axis (HPA axis) is a major physiological stress system that produces cortisol. This hormone is involved in responding to environmental stress and also shapes many aspects of brain development. Both the HPA axis and the intestinal microbiota show rapid and profound developmental changes during the first years of life. Early environmental disturbances can affect the development of both systems. Early adversity, for example, is known to lead to later unbalances in both, as well as to psychopathological behavior and emotions. The goal of this theoretical review is to summarize current knowledge on the developmental crosstalk between the intestinal microbiota and the HPA axis, providing a basis for understanding the development and bidirectional communication between these two essential systems in human functioning.
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Wardhani, S., Ridho, M. R., Arinafril, Arita, S., Ngudiantoro. Consortium of heterotrophic nitrification bacteria Bacillus sp. and its application on urea fertilizer industrial wastewater treatment. MALAYSIAN JOURNAL OF MICROBIOLOGY 2017. [DOI: 10.1016/s1773-035x(15)72824-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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The Role of Malnutrition during Pregnancy and Its Effects on Brain and Skeletal Muscle Postnatal Development. J Funct Morphol Kinesiol 2017. [DOI: 10.3390/jfmk2030030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
“Foetal programming” refers to nutritional and hormonal variations during pregnancy. A maternal proper diet has a fundamental role in decreasing pregnancy complications and to prevent possible diseases in postnatal life. In our narrative review, we analyze and discuss the role of malnutrition during pregnancy and its effects on pre- and postnatal development of embryos. Our review proposes a comprehensive and careful analysis of the studies in this field regarding malnutrition and foetal programming. Evidence shows that nutrient imbalance before implantation may result in somatic hypoevolutism at birth, and endocrine and metabolic dysfunctions in postnatal life. In addition, the maternal malnutrition could exert a suppressive effect on the maternal and foetal immune response. It could also affect both the proliferation of myogenic precursors reducing the number of muscle fibres and the future reproductive maturation with possible consequent impaired fertility and quality of gametes. In conclusion, it is necessary to develop dietary strategies to optimize nutrition, not only during pregnancy but already when it is programmed, in order to improve the outcomes of pregnancy, promote growth, healthy child development, reduce the risk of chronic diseases, and slow down the metabolic decline associated with aging.
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