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Chen Y, Chen Z, Zhu Y, Wen Y, Zhao C, Mu W. Recent Progress in Human Milk Oligosaccharides and Its Antiviral Efficacy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:7607-7617. [PMID: 38563422 DOI: 10.1021/acs.jafc.3c09460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Gastrointestinal (GI)-associated viruses, including rotavirus (RV), norovirus (NV), and enterovirus, usually invade host cells, transmit, and mutate their genetic information, resulting in influenza-like symptoms, acute gastroenteritis, encephalitis, or even death. The unique structures of human milk oligosaccharides (HMOs) enable them to shape the gut microbial diversity and endogenous immune system of human infants. Growing evidence suggests that HMOs can enhance host resistance to GI-associated viruses but without a systematic summary to review the mechanism. The present review examines the lactose- and neutral-core HMOs and their antiviral effects in the host. The potential negative impacts of enterovirus 71 (EV-A71) and other GI viruses on children are extensive and include neurological sequelae, neurodevelopmental retardation, and cognitive decline. However, the differences in the binding affinity of HMOs for GI viruses are vast. Hence, elucidating the mechanisms and positive effects of HMOs against different viruses may facilitate the development of novel HMO derived oligosaccharides.
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Affiliation(s)
- Yihan Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
| | - Zhengxin Chen
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yingying Zhu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
| | - Yuxi Wen
- College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Department of Analytical and Food Chemistry, Faculty of Sciences, Universidade de Vigo, 32004 Ourense Spain
| | - Chao Zhao
- College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
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2
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Hu S, Bourgonje AR, Gacesa R, Jansen BH, Björk JR, Bangma A, Hidding IJ, van Dullemen HM, Visschedijk MC, Faber KN, Dijkstra G, Harmsen HJM, Festen EAM, Vich Vila A, Spekhorst LM, Weersma RK. Mucosal host-microbe interactions associate with clinical phenotypes in inflammatory bowel disease. Nat Commun 2024; 15:1470. [PMID: 38368394 PMCID: PMC10874382 DOI: 10.1038/s41467-024-45855-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 02/05/2024] [Indexed: 02/19/2024] Open
Abstract
Disrupted host-microbe interactions at the mucosal level are key to the pathophysiology of IBD. This study aimed to comprehensively examine crosstalk between mucosal gene expression and microbiota in patients with IBD. To study tissue-specific interactions, we perform transcriptomic (RNA-seq) and microbial (16S-rRNA-seq) profiling of 697 intestinal biopsies (645 derived from 335 patients with IBD and 52 from 16 non-IBD controls). Mucosal gene expression patterns in IBD are mainly determined by tissue location and inflammation, whereas the mucosal microbiota composition shows a high degree of individual specificity. Analysis of transcript-bacteria interactions identifies six distinct groups of inflammation-related pathways that are associated with intestinal microbiota (adjusted P < 0.05). An increased abundance of Bifidobacterium is associated with higher expression of genes involved in fatty acid metabolism, while Bacteroides correlates with increased metallothionein signaling. In patients with fibrostenosis, a transcriptional network dominated by immunoregulatory genes is associated with Lachnoclostridium bacteria in non-stenotic tissue (adjusted P < 0.05), while being absent in CD without fibrostenosis. In patients using TNF-α-antagonists, a transcriptional network dominated by fatty acid metabolism genes is linked to Ruminococcaceae (adjusted P < 0.05). Mucosal microbiota composition correlates with enrichment of intestinal epithelial cells, macrophages, and NK-cells. Overall, these data demonstrate the presence of context-specific mucosal host-microbe interactions in IBD, revealing significantly altered inflammation-associated gene-taxa modules, particularly in patients with fibrostenotic CD and patients using TNF-α-antagonists. This study provides compelling insights into host-microbe interactions that may guide microbiota-directed precision medicine and fuels the rationale for microbiota-targeted therapeutics as a strategy to alter disease course in IBD.
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Affiliation(s)
- Shixian Hu
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Institute of Precision Medicine, the First Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Arno R Bourgonje
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Ranko Gacesa
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Bernadien H Jansen
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Johannes R Björk
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Amber Bangma
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Iwan J Hidding
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Hendrik M van Dullemen
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Marijn C Visschedijk
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Klaas Nico Faber
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Gerard Dijkstra
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Hermie J M Harmsen
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Eleonora A M Festen
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Arnau Vich Vila
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Lieke M Spekhorst
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Department of Gastroenterology and Hepatology, Medisch Spectrum Twente, Enschede, the Netherlands
| | - Rinse K Weersma
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
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Zhao Y, Wang P, Qu X, Yuan K, Zhu S, Wang S, Luan Q, Zhou H, Yin Y, Zhao Z, Gao Y, Chen S, Lu Y, Wang J, Yin Y. Investigation of circulating infectious agents in experimental Beagle dogs of a production colony and three research facilities in China from June 2021 to May 2022. Lab Anim 2024; 58:52-64. [PMID: 37702462 DOI: 10.1177/00236772231188172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
To understand the epizootiologic characteristics of pathogens and opportunistic infections in one Beagle dog production colony and three research facilities, viruses and mycoplasma were detected in 1777 samples collected from Beagle dogs in China by polymerase chain reaction/reverse transcription polymerase chain reaction, and bacteria were isolated and identified by 16S rRNA sequence analysis. In addition, genotyping of the major circulating viruses was carried out by amplification of gene fragments and homology analysis. Canine coronavirus (CCoV), Escherichia coli, canine parvovirus (CPV), Bordetella bronchiseptica, Clostridium perfringens, Mycoplasma cynos, Klebsiella pneumoniae, Streptococcus canis, canine astrovirus (CaAstV), canine kobuvirus (CaKV), Pseudomonas aeruginosa, Proteus mirabilis, Macrococcus canis, Pasteurella canis, canine bocavirus (CBoV) and canine adenovirus (CAdV) were detected in the samples. Single, double, triple and quadruple infections accounted for 6.6%, 1.4%, 1.2% and 0.96% of samples, respectively. CCoV strains in 81 samples included three genotypes, CCoV-I, CCoV-IIa and CCoV-IIb, by analysis of S gene. The rate of single infection of CCoV-I, CCoV-IIa or CCoV-IIb was 19%, 38% or 7.4% respectively. The double and triple infection rates of CCoV were 32.8% and 2.5% respectively. All CPV strains in 36 samples belonged to CPV-2c. There were three amino acid differences in the Fiber protein of CAdV-positive sample QD2022, compared with the reference strain Toronto A26/61 and the vaccine strain YCA-18. These results suggest that CCoV and CPV are primary infectious agents, and that these two viruses were often identified in mixed infections, or coinfections alongside mycoplasma or other bacteria. These results will provide the basis for improvements in prevention and control of naturally occurring infectious diseases in Beagle dog production colonies and research facilities.
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Affiliation(s)
- Yue Zhao
- College of Veterinary Medicine, Qingdao Agricultural University, China
| | - Panlong Wang
- College of Veterinary Medicine, Qingdao Agricultural University, China
| | - Xueting Qu
- Qingdao Bolong Experimental Animal Co., Ltd., China
| | - Kunpeng Yuan
- Qingdao Bolong Experimental Animal Co., Ltd., China
| | - Suzhen Zhu
- Technology Center of Qingdao Customs District, China
| | - Sen Wang
- Qingdao Orange Pet Hospital, China
| | | | - Hao Zhou
- Qingdao Bolong Experimental Animal Co., Ltd., China
| | - Yue Yin
- Qingdao Bolong Experimental Animal Co., Ltd., China
| | - Zijing Zhao
- College of Veterinary Medicine, Qingdao Agricultural University, China
| | - Yongjuan Gao
- College of Veterinary Medicine, Qingdao Agricultural University, China
| | - Shuzhen Chen
- College of Veterinary Medicine, Qingdao Agricultural University, China
| | - Yanjing Lu
- College of Veterinary Medicine, Qingdao Agricultural University, China
| | - Jianlin Wang
- College of Veterinary Medicine, Qingdao Agricultural University, China
| | - Yanbo Yin
- College of Veterinary Medicine, Qingdao Agricultural University, China
- Qingdao Bolong Experimental Animal Co., Ltd., China
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Turunen J, Tejesvi MV, Paalanne N, Pokka T, Amatya SB, Mishra S, Kaisanlahti A, Reunanen J, Tapiainen T. Investigating prenatal and perinatal factors on meconium microbiota: a systematic review and cohort study. Pediatr Res 2024; 95:135-145. [PMID: 37591927 PMCID: PMC10798900 DOI: 10.1038/s41390-023-02783-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/30/2023] [Accepted: 07/29/2023] [Indexed: 08/19/2023]
Abstract
BACKGROUND The first-pass meconium has been suggested as a proxy for the fetal gut microbiota because it is formed in utero. This systematic review and cohort study investigated how pre- and perinatal factors influence the composition of the meconium microbiota. METHODS We performed the systematic review using Covidence by searching PubMed, Scopus, and Web of Science databases with the search terms "meconium microbiome" and "meconium microbiota". In the cohort study, we performed 16 S rRNA gene sequencing on 393 meconium samples and analyzed the sequencing data using QIIME2. RESULTS Our systematic review identified 69 studies exploring prenatal factors, immediate perinatal factors, and microbial composition in relation to subsequent health of infants but gave only limited comparative evidence regarding factors related to the composition of the meconium microbiota. The cohort study pointed to a low-biomass microbiota consisting of the phyla Firmicutes, Proteobacteria and Actinobacteriota and the genera Staphylococcus, Escherichia-Shigella and Lactobacillus, and indicated that immediate perinatal factors affected the composition of the meconium microbiota more than did prenatal factors. CONCLUSIONS This finding supports the idea that the meconium microbiota mostly starts developing during delivery. IMPACT It is unclear when the first-pass meconium microbiota develops, and what are the sources of the colonization. In this systematic review, we found 69 studies exploring prenatal factors, immediate perinatal factors, and microbial composition relative to subsequent health of infants, but there was no consensus on the factors affecting the meconium microbiota development. In this cohort study, immediate perinatal factors markedly affected the meconium microbiota development while prenatal factors had little effect on it. As the meconium microbiota composition was influenced by immediate perinatal factors, the present study supports the idea that the initial gut microbiota develops mainly during delivery.
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Affiliation(s)
- Jenni Turunen
- Research Unit of Clinical Medicine, University of Oulu, Oulu, Finland.
- Biocenter Oulu, University of Oulu, Oulu, Finland.
| | - Mysore V Tejesvi
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Ecology and Genetics, Faculty of Science, University of Oulu, Oulu, Finland
| | - Niko Paalanne
- Research Unit of Clinical Medicine, University of Oulu, Oulu, Finland
- Department of Pediatrics and Adolescent Medicine, Oulu University Hospital, Oulu, Finland
| | - Tytti Pokka
- Research Unit of Clinical Medicine, University of Oulu, Oulu, Finland
- Research Service Unit, Oulu University Hospital, Oulu, Finland
| | - Sajeen Bahadur Amatya
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, Oulu, Finland
| | - Surbhi Mishra
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, Oulu, Finland
| | - Anna Kaisanlahti
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, Oulu, Finland
| | - Justus Reunanen
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Research Unit of Translational Medicine, University of Oulu, Oulu, Finland
| | - Terhi Tapiainen
- Research Unit of Clinical Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Department of Pediatrics and Adolescent Medicine, Oulu University Hospital, Oulu, Finland
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Stanikova A, Jouza M, Bohosova J, Slaby O, Jabandziev P. Role of the microbiome in pathophysiology of necrotising enterocolitis in preterm neonates. BMJ Paediatr Open 2023; 7:e002172. [PMID: 37918941 PMCID: PMC10626796 DOI: 10.1136/bmjpo-2023-002172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 09/26/2023] [Indexed: 11/04/2023] Open
Abstract
Although necrotising enterocolitis (NEC) is a serious, life-threatening disease, improved neonatal care is increasing the number of survivors with NEC among extremely preterm neonates. Therapy is nevertheless mostly symptomatic and the mortality rate remains high, especially among neonates requiring surgery. Therefore, it is important to focus on preventing the disease and modifiable risk factors. NEC's pathophysiology is multifaceted, with key factors being immaturity of the immune and barrier protective mechanisms of the premature gut and exaggerated proinflammatory reaction to insults like gut hypoxia, enteral nutrition or microbial dysbiosis. The role of the intestinal microbiome in the pathophysiology of NEC has been a subject of research for many years, but to date no specific pathogen or type of dysbiosis has been connected with NEC development. This review assesses current knowledge as to the role of the intestinal microbiota in the pathophysiology of NEC and the possibilities for positively influencing it.
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Affiliation(s)
- Andrea Stanikova
- Department of Neonatology, University Hospital Brno, Brno, Czech Republic
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Martin Jouza
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
- Department of Pediatrics, University Hospital Brno, Brno, Czech Republic
| | - Julia Bohosova
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Ondrej Slaby
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- Department of Biology, University Hospital Brno, Brno, Czech Republic
| | - Petr Jabandziev
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
- Department of Pediatrics, University Hospital Brno, Brno, Czech Republic
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Wala SJ, Sajankila N, Ragan MV, Duff AF, Wickham J, Volpe SG, Wang Y, Conces M, Dumbauld Z, Purayil N, Narayanan S, Rajab A, Mihi B, Bailey MT, Goodman SD, Besner GE. Superior performance of biofilm versus planktonic Limosilactobacillus reuteri in protection of the intestines and brain in a piglet model of necrotizing enterocolitis. Sci Rep 2023; 13:17740. [PMID: 37872187 PMCID: PMC10593788 DOI: 10.1038/s41598-023-44676-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 10/11/2023] [Indexed: 10/25/2023] Open
Abstract
Necrotizing enterocolitis (NEC) is the leading cause of gastrointestinal-related death in premature infants. Its etiology is multifactorial, with intestinal dysbiosis playing a major role. Probiotics are a logical preventative therapy for NEC, however their benefits have been inconsistent. We previously developed a novel probiotic delivery system in which planktonic (free-living) Limosilactobacillus reuteri (Lr) is incubated with biocompatible dextranomer microspheres (DM) loaded with maltose (Lr-DM-maltose) to induce biofilm formation. Here we have investigated the effects of Lr-DM-maltose in an enteral feed-only piglet model of NEC. We found a significant decrease in the incidence of Definitive NEC (D-NEC), death associated with D-NEC, and activated microglia in the brains of piglets treated with Lr-DM-maltose compared to non-treated piglets. Microbiome analyses using 16S rRNA sequencing of colonic contents revealed a significantly different microbial community composition between piglets treated with Lr-DM-maltose compared to non-treated piglets, with an increase in Lactobacillaceae and a decrease in Clostridiaceae in Lr-DM-maltose-treated piglets. Furthermore, there was a significant decrease in the incidence of D-NEC between piglets treated with Lr-DM-maltose compared to planktonic Lr. These findings validate our previous results in rodents, and support future clinical trials of Lr in its biofilm state for the prevention of NEC in premature neonates.
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Affiliation(s)
- Samantha J Wala
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatric Surgery, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH, 43205, USA
| | - Nitin Sajankila
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatric Surgery, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH, 43205, USA
| | - Mecklin V Ragan
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatric Surgery, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH, 43205, USA
| | - Audrey F Duff
- Center for Microbial Pathogenesis, Nationwide Children's Hospital, Columbus, OH, USA
| | - Joseph Wickham
- Center for Microbial Pathogenesis, Nationwide Children's Hospital, Columbus, OH, USA
| | - Samuel G Volpe
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
| | - Yijie Wang
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
| | - Miriam Conces
- Department of Pathology, Nationwide Children's Hospital, Columbus, OH, USA
| | - Zachary Dumbauld
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
| | - Nanditha Purayil
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
| | - Siddharth Narayanan
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
| | - Adrian Rajab
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
| | - Belgacem Mihi
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
| | - Michael T Bailey
- Center for Microbial Pathogenesis, Nationwide Children's Hospital, Columbus, OH, USA
| | - Steven D Goodman
- Center for Microbial Pathogenesis, Nationwide Children's Hospital, Columbus, OH, USA
| | - Gail E Besner
- Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA.
- Department of Pediatric Surgery, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH, 43205, USA.
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7
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Fang M, Hu W, Liu B. Effects of nano-selenium on cecum microbial community and metabolomics in chickens challenged with Ochratoxin A. Front Vet Sci 2023; 10:1228360. [PMID: 37732141 PMCID: PMC10507861 DOI: 10.3389/fvets.2023.1228360] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 08/22/2023] [Indexed: 09/22/2023] Open
Abstract
Introduction Ochratoxin A (OTA) is a widely distributed mycotoxin. Nano-selenium (Nano-Se) is an emerging form of selenium known for its superior bioavailability, remarkable catalytic efficiency, and robust adsorbing capacity. Despite these characteristics, its impact on the microbial community and metabolomics in the cecum of chickens exposed to OTA has been infrequently investigated. This research examined the microbiota and metabolomic alterations linked to OTA in chickens, with or without Nano-Se present. Methods A cohort of 80 healthy chickens at the age of 1 day was randomly distributed into four groups of equal numbers, namely the Se cohort (1 mg/kg Nano-Se), the OTA cohort (50 μg/kg OTA), the OTA-Se cohort (50 μg/kg OTA + 1 mg/kg Nano-Se), and the control group. Each chicken group's caecal microbiome and metabolome were characterized using 16S rRNA sequencing and Liquid chromatography coupled with mass spectrometry (LC-MS) analyses. Results and discussion Our results showed that the on day 21, the final body weight was significantly reduced in response to OTA treatments (p < 0.05), the average daily gain in the OTA group was found to be inferior to the other groups (p < 0.01). In addition, Nano-Se supplementation could reduce the jejunum and liver pathological injuries caused by OTA exposure. The 16S rRNA sequencing suggest that Nano-Se supplementation in OTA-exposed chickens mitigated gut microbiota imbalances by promoting beneficial microbiota and suppressing detrimental bacteria. Moreover, untargeted metabolomics revealed a significant difference in caecal metabolites by Nano-Se pretreatment. Collectively, the dataset outcomes highlighted that Nano-Se augmentation regulates intestinal microbiota and associated metabolite profiles, thus influencing critical metabolic pathways, and points to a possible food-additive product.
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Affiliation(s)
- Manxin Fang
- College of Life Science and Resources and Environment, Yichun University, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Yichun, China
| | - Wei Hu
- College of Life Science and Resources and Environment, Yichun University, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Yichun, China
| | - Ben Liu
- College of Life Science and Resources and Environment, Yichun University, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Yichun, China
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8
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Bénard MV, Arretxe I, Wortelboer K, Harmsen HJM, Davids M, de Bruijn CMA, Benninga MA, Hugenholtz F, Herrema H, Ponsioen CY. Anaerobic Feces Processing for Fecal Microbiota Transplantation Improves Viability of Obligate Anaerobes. Microorganisms 2023; 11:2238. [PMID: 37764082 PMCID: PMC10535047 DOI: 10.3390/microorganisms11092238] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/29/2023] Open
Abstract
Fecal microbiota transplantation (FMT) is under investigation for several indications, including ulcerative colitis (UC). The clinical success of FMT depends partly on the engraftment of viable bacteria. Because the vast majority of human gut microbiota consists of anaerobes, the currently used aerobic processing protocols of donor stool may diminish the bacterial viability of transplanted material. This study assessed the effect of four processing techniques for donor stool (i.e., anaerobic and aerobic, both direct processing and after temporary cool storage) on bacterial viability. By combining anaerobic culturing on customized media for anaerobes with 16S rRNA sequencing, we could successfully culture and identify the majority of the bacteria present in raw fecal suspensions. We show that direct anaerobic processing of donor stool is superior to aerobic processing conditions for preserving the bacterial viability of obligate anaerobes and butyrate-producing bacteria related to the clinical response to FMT in ulcerative colitis patients, including Faecalibacterium, Eubacterium hallii, and Blautia. The effect of oxygen exposure during stool processing decreased when the samples were stored long-term. Our results confirm the importance of sample conditioning to preserve the bacterial viability of oxygen-sensitive gut bacteria. Anaerobic processing of donor stool may lead to increased clinical success of FMT, which should further be investigated in clinical trials.
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Affiliation(s)
- Mèlanie V. Bénard
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (M.V.B.); (I.A.); (C.M.A.d.B.); (M.A.B.)
- Department of Endocrinology and Metabolism, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Iñaki Arretxe
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (M.V.B.); (I.A.); (C.M.A.d.B.); (M.A.B.)
| | - Koen Wortelboer
- Department of Experimental Vascular Medicine, Amsterdam Cardiovascular Sciences (ACS), Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (K.W.); (M.D.); (H.H.)
| | - Hermie J. M. Harmsen
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands;
| | - Mark Davids
- Department of Experimental Vascular Medicine, Amsterdam Cardiovascular Sciences (ACS), Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (K.W.); (M.D.); (H.H.)
| | - Clara M. A. de Bruijn
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (M.V.B.); (I.A.); (C.M.A.d.B.); (M.A.B.)
- Pediatric Gastroenterology, Hepatology and Nutrition, Emma Children’s Hospital, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Reproduction & Development Research Institute, Emma Children’s Hospital, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Marc A. Benninga
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (M.V.B.); (I.A.); (C.M.A.d.B.); (M.A.B.)
- Pediatric Gastroenterology, Hepatology and Nutrition, Emma Children’s Hospital, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Reproduction & Development Research Institute, Emma Children’s Hospital, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Floor Hugenholtz
- Center for Experimental and Molecular Medicine, Amsterdam Medical Center, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands;
| | - Hilde Herrema
- Department of Experimental Vascular Medicine, Amsterdam Cardiovascular Sciences (ACS), Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (K.W.); (M.D.); (H.H.)
| | - Cyriel Y. Ponsioen
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (M.V.B.); (I.A.); (C.M.A.d.B.); (M.A.B.)
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9
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Xiang Q, Yan X, Shi W, Li H, Zhou K. Early gut microbiota intervention in premature infants: Application perspectives. J Adv Res 2023; 51:59-72. [PMID: 36372205 PMCID: PMC10491976 DOI: 10.1016/j.jare.2022.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/30/2022] [Accepted: 11/05/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Preterm birth is the leading cause of death in children under the age of five. One of the major factors contributing to the high risk of diseases and deaths in premature infants is the incomplete development of the intestinal immune system. The gut microbiota has been widely recognized as a critical factor in promoting the development and function of the intestinal immune system after birth. However, the gut microbiota of premature infants is at high risk of dysbiosis, which is highly associated with adverse effects on the development and education of the early life immune system. Early intervention can modulate the colonization and development of gut microbiota and has a long-term influence on the development of the intestinal immune system. AIM OF REVIEW This review aims to summarize the characterization, interconnection, and underlying mechanism of gut microbiota and intestinal innate immunity in premature infants, and to discuss the status, applicability, safety, and prospects of different intervention strategies in premature infants, thus providing an overview and outlook of the current applications and remaining gaps of early intervention strategies in premature infants. KEY SCIENTIFIC CONCEPTS OF REVIEW This review is focused on three key concepts. Firstly, the gut microbiota of premature infants is at high risk of dysbiosis, resulting in dysfunctional intestinal immune system processes. Secondly, contributing roles of early intervention have been observed in improving the intestinal environment and promoting gut microbiota colonization, which is significant in the development and function of gut immunity in premature infants. Thirdly, different strategies of early intervention, such as probiotics, fecal microbiota transplantation, and nutrients, show different safety, applicability, and outcome in premature infants, and the underlying mechanism is complex and poorly understood.
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Affiliation(s)
- Quanhang Xiang
- Shenzhen Institute of Respiratory Diseases, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen, China
| | - Xudong Yan
- Department of Neonatal Intensive Care Unit, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen, China
| | - Wei Shi
- Department of Obstetrics and Gynecology, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen, China
| | - Huiping Li
- Department of Respiratory and Critical Care Medicine, the first affiliated hospital of Southern University of Science and Technology of China, Shenzhen People's Hospital, Shenzhen, China; The First Affiliated Hospital (Shenzhen People's Hospital), Southern University of Science and Technology, Shenzhen, China
| | - Kai Zhou
- Shenzhen Institute of Respiratory Diseases, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen, China; The First Affiliated Hospital (Shenzhen People's Hospital), Southern University of Science and Technology, Shenzhen, China.
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10
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Martins RDS, Kooi EMW, Poelstra K, Hulscher JBF. The role of intestinal alkaline phosphatase in the development of necrotizing enterocolitis. Early Hum Dev 2023; 183:105797. [PMID: 37300991 DOI: 10.1016/j.earlhumdev.2023.105797] [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: 04/28/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023]
Abstract
Necrotizing enterocolitis (NEC) is a devastating neonatal disease that affects neonates worldwide and often leads to high morbidity and mortality rates. Despite extensive research, the cause of NEC remains unclear, and current treatment options are limited. An important novel finding is the potential role of intestinal Alkaline Phosphatase (IAP) in both pathogenesis and treatment of NEC. IAP can play a vital role in detoxifying liposaccharides (LPS), a key mediator of many pathological processes, thereby reducing the inflammatory response associated with NEC. Furthermore, IAP can help prevent dysbiosis, improve intestinal perfusion, and promote autophagy. In this comprehensive review, we present evidence of the possible connection between IAP and the LPS/Toll-like receptor 4 (TLR4) pathway, impaired gut immunity, and dysbiosis in the preterm gut. Based on these findings, the administration of exogenous IAP might provide promising preventive and therapeutic avenues for the management of NEC.
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Affiliation(s)
- Raquel Dos Santos Martins
- Division of Pediatric Surgery, Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
| | - Elisabeth M W Kooi
- Division of Neonatology, Department of Pediatrics, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Klaas Poelstra
- Department of Nanomedicine and Drug Targeting, Groningen Research Institute of Pharmacy (GRIP), University of Groningen, Groningen, the Netherlands
| | - Jan B F Hulscher
- Division of Pediatric Surgery, Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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11
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Kiu R, Shaw AG, Sim K, Acuna-Gonzalez A, Price CA, Bedwell H, Dreger SA, Fowler WJ, Cornwell E, Pickard D, Belteki G, Malsom J, Phillips S, Young GR, Schofield Z, Alcon-Giner C, Berrington JE, Stewart CJ, Dougan G, Clarke P, Douce G, Robinson SD, Kroll JS, Hall LJ. Particular genomic and virulence traits associated with preterm infant-derived toxigenic Clostridium perfringens strains. Nat Microbiol 2023; 8:1160-1175. [PMID: 37231089 PMCID: PMC10234813 DOI: 10.1038/s41564-023-01385-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 04/17/2023] [Indexed: 05/27/2023]
Abstract
Clostridium perfringens is an anaerobic toxin-producing bacterium associated with intestinal diseases, particularly in neonatal humans and animals. Infant gut microbiome studies have recently indicated a link between C. perfringens and the preterm infant disease necrotizing enterocolitis (NEC), with specific NEC cases associated with overabundant C. perfringens termed C. perfringens-associated NEC (CPA-NEC). In the present study, we carried out whole-genome sequencing of 272 C. perfringens isolates from 70 infants across 5 hospitals in the United Kingdom. In this retrospective analysis, we performed in-depth genomic analyses (virulence profiling, strain tracking and plasmid analysis) and experimentally characterized pathogenic traits of 31 strains, including 4 from CPA-NEC patients. We found that the gene encoding toxin perfringolysin O, pfoA, was largely deficient in a human-derived hypovirulent lineage, as well as certain colonization factors, in contrast to typical pfoA-encoding virulent lineages. We determined that infant-associated pfoA+ strains caused significantly more cellular damage than pfoA- strains in vitro, and further confirmed this virulence trait in vivo using an oral-challenge C57BL/6 murine model. These findings suggest both the importance of pfoA+ C. perfringens as a gut pathogen in preterm infants and areas for further investigation, including potential intervention and therapeutic strategies.
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Affiliation(s)
- Raymond Kiu
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, UK
| | | | - Kathleen Sim
- Faculty of Medicine, Imperial College London, London, UK
| | | | | | - Harley Bedwell
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, UK
| | - Sally A Dreger
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, UK
| | - Wesley J Fowler
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, UK
| | - Emma Cornwell
- Faculty of Medicine, Imperial College London, London, UK
| | - Derek Pickard
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Gusztav Belteki
- Neonatal Intensive Care Unit, The Rosie Hospital, Cambridge, UK
| | - Jennifer Malsom
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, UK
| | - Sarah Phillips
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, UK
| | - Gregory R Young
- Hub for Biotechnology in the Built Environment, Northumbria University, Newcastle upon Tyne, UK
| | - Zoe Schofield
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, UK
| | | | - Janet E Berrington
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
- Newcastle Neonatal Services, Newcastle upon Tyne NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Christopher J Stewart
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
- Newcastle Neonatal Services, Newcastle upon Tyne NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Gordon Dougan
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Paul Clarke
- Norfolk and Norwich University Hospital, Norwich, UK
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - Gillian Douce
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Stephen D Robinson
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, UK
- School of Biological Sciences, University of East Anglia, Norwich, UK
| | - J Simon Kroll
- Faculty of Medicine, Imperial College London, London, UK
| | - Lindsay J Hall
- Gut Microbes and Health, Quadram Institute Bioscience, Norwich, UK.
- Norwich Medical School, University of East Anglia, Norwich, UK.
- Intestinal Microbiome, School of Life Sciences, ZIEL-Institute for Food & Health, Technical University of Munich, Freising, Germany.
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12
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Melendez Hebib V, Taft DH, Stoll B, Liu J, Call L, Guthrie G, Jensen N, Hair AB, Mills DA, Burrin DG. Probiotics and Human Milk Differentially Influence the Gut Microbiome and NEC Incidence in Preterm Pigs. Nutrients 2023; 15:2585. [PMID: 37299550 PMCID: PMC10255242 DOI: 10.3390/nu15112585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/24/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
Necrotizing enterocolitis (NEC) is the leading cause of death caused by gastrointestinal disease in preterm infants. Major risk factors include prematurity, formula feeding, and gut microbial colonization. Microbes have been linked to NEC, yet there is no evidence of causal species, and select probiotics have been shown to reduce NEC incidence in infants. In this study, we evaluated the effect of the probiotic Bifidobacterium longum subsp. infantis (BL. infantis), alone and in combination with a human milk oligosaccharide (HMO)-sialylactose (3'SL)-on the microbiome, and the incidence of NEC in preterm piglets fed an infant formula diet. We studied 50 preterm piglets randomized between 5 treatments: (1) Preterm infant formula, (2) Donor human milk (DHM), (3) Infant formula + 3'SL, (4) Infant formula + BL. infantis, and (5) Infant formula and BL. infantis + 3'SL. NEC incidence and severity were assessed through the evaluation of tissue from all the segments of the GI tract. The gut microbiota composition was assessed both daily and terminally through 16S and whole-genome sequencing (WGS) of rectal stool samples and intestinal contents. Dietary BL. infantis and 3'SL supplementation had no effect, yet DHM significantly reduced the incidence of NEC. The abundance of BL. infantis in the gut contents negatively correlated with disease severity. Clostridium sensu stricto 1 and Clostridium perfringens were significantly more abundant in NEC and positively correlated with disease severity. Our results suggest that pre- and probiotics are not sufficient for protection from NEC in an exclusively formula-based diet. The results highlight the differences in microbial species positively associated with both diet and NEC incidence.
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Affiliation(s)
- Valeria Melendez Hebib
- USDA Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; (V.M.H.); (B.S.); (L.C.); (G.G.)
| | - Diana H. Taft
- Foods for Health Institute, University of California, Davis, CA 95616, USA; (D.H.T.); (J.L.); (N.J.); (D.A.M.)
- Department of Food Science and Technology, University of California, Davis, CA 95616, USA
| | - Barbara Stoll
- USDA Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; (V.M.H.); (B.S.); (L.C.); (G.G.)
| | - Jinxin Liu
- Foods for Health Institute, University of California, Davis, CA 95616, USA; (D.H.T.); (J.L.); (N.J.); (D.A.M.)
- Department of Food Science and Technology, University of California, Davis, CA 95616, USA
- Laboratory of Gastrointestinal Microbiology, Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Lee Call
- USDA Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; (V.M.H.); (B.S.); (L.C.); (G.G.)
| | - Gregory Guthrie
- USDA Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; (V.M.H.); (B.S.); (L.C.); (G.G.)
| | - Nick Jensen
- Foods for Health Institute, University of California, Davis, CA 95616, USA; (D.H.T.); (J.L.); (N.J.); (D.A.M.)
- Department of Food Science and Technology, University of California, Davis, CA 95616, USA
| | - Amy B. Hair
- Section of Neonatology, Departments of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX 77030, USA;
| | - David A. Mills
- Foods for Health Institute, University of California, Davis, CA 95616, USA; (D.H.T.); (J.L.); (N.J.); (D.A.M.)
- Department of Food Science and Technology, University of California, Davis, CA 95616, USA
| | - Douglas G. Burrin
- USDA Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; (V.M.H.); (B.S.); (L.C.); (G.G.)
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13
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Beldowska A, Barszcz M, Dunislawska A. State of the art in research on the gut-liver and gut-brain axis in poultry. J Anim Sci Biotechnol 2023; 14:37. [PMID: 37038205 PMCID: PMC10088153 DOI: 10.1186/s40104-023-00853-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 02/12/2023] [Indexed: 04/12/2023] Open
Abstract
The relationship between the intestines and their microbiota, the liver, and the neuronal system is called the gut-liver-brain axis. This relationship has been studied and observed for a relatively short time but is considered in the development of research focused on, e.g., liver diseases and intestinal dysbiosis. The role of the gut microbiota in this relationship is crucial, as it acts on poultry's performance and feed utilization, affecting meat and egg quality. The correct composition of the intestinal microbiota makes it possible to determine the essential metabolic pathways and biological processes of the individual components of the microbiota, allowing further speculation of the role of microbial populations on internal organs such as the liver and brain in the organism. The gut microbiota forms a complex, dense axis with the autonomic and enteric nervous systems. The symbiotic relationship between the liver and gut microbiota is based on immune, metabolic and neuroendocrine regulation, and stabilization. On the other hand, the gut-brain axis is a bidirectional interaction and information transfer system between the gastrointestinal tract and the central nervous system. The following paper will discuss the current state of knowledge of the gut-liver-brain axis of poultry, including factors that may affect this complex relationship.
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Affiliation(s)
- Aleksandra Beldowska
- Department of Animal Biotechnology and Genetics, Bydgoszcz University of Science and Technology, Mazowiecka 28, Bydgoszcz, 85-084, Poland
| | - Marcin Barszcz
- Department of Animal Nutrition, The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Instytucka 3, Jabłonna, 05-110, Poland
| | - Aleksandra Dunislawska
- Department of Animal Biotechnology and Genetics, Bydgoszcz University of Science and Technology, Mazowiecka 28, Bydgoszcz, 85-084, Poland.
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14
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Necrotizing Enterocolitis: The Role of Hypoxia, Gut Microbiome, and Microbial Metabolites. Int J Mol Sci 2023; 24:ijms24032471. [PMID: 36768793 PMCID: PMC9917134 DOI: 10.3390/ijms24032471] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 02/01/2023] Open
Abstract
Necrotizing enterocolitis (NEC) is a life-threatening disease that predominantly affects very low birth weight preterm infants. Development of NEC in preterm infants is accompanied by high mortality. Surgical treatment of NEC can be complicated by short bowel syndrome, intestinal failure, parenteral nutrition-associated liver disease, and neurodevelopmental delay. Issues surrounding pathogenesis, prevention, and treatment of NEC remain unclear. This review summarizes data on prenatal risk factors for NEC, the role of pre-eclampsia, and intrauterine growth retardation in the pathogenesis of NEC. The role of hypoxia in NEC is discussed. Recent data on the role of the intestinal microbiome in the development of NEC, and features of the metabolome that can serve as potential biomarkers, are presented. The Pseudomonadota phylum is known to be associated with NEC in preterm neonates, and the role of other bacteria and their metabolites in NEC pathogenesis is also discussed. The most promising approaches for preventing and treating NEC are summarized.
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15
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Lin H, Xu C, Chen J, Ma X, Shi L, Shi W, Du L, Ni Y. Alteration of the gut microbiota after surgery in preterm infants with necrotizing enterocolitis. Front Pediatr 2023; 11:993759. [PMID: 36793334 PMCID: PMC9923499 DOI: 10.3389/fped.2023.993759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 01/03/2023] [Indexed: 02/03/2023] Open
Abstract
PURPOSE To investigate the dynamic changes in the intestinal microbiota in preterm infants with necrotizing enterocolitis (NEC) before and after treatment via a prospective case-control study. METHODS Preterm infants with NEC and preterm infants with similar age and weight (control group) were enrolled in this study. They were divided into NEC_Onset (diagnosis time), NEC_Refeed (refeed time), NEC_FullEn (full enteral nutrition time), Control_Onset, and Control_FullEn groups according to the time of the fecal material collected. Except for basic clinical information, fecal specimens of the infants were obtained as well at indicated times for 16S rRNA gene sequencing. All infants were followed up after discharge from the NICU, and the growth data of the corrected age of 12 months were acquired from the electronic outpatient system and telephonic interviews. RESULTS A total of 13 infants with NEC and 15 control infants were enrolled. A gut microbiota analysis showed that the Shannon and Simpson indices were lower in the NEC_FullEn group than in the Control_FullEn group (p < .05). Methylobacterium, Clostridium_butyricum, and Acidobacteria were more abundant in infants with NEC during diagnosis. Methylobacterium and Acidobacteria were remained plentiful in the NEC group until the end of treatment. These bacteria species were significantly positively correlated with CRP and negatively correlated with platelet count. The rate of delayed growth was higher in the NEC group than in the control group (25% vs. 7.1%) at 12 months of corrected age, but there was no significant difference. In addition, the pathways of synthesis and degradation of ketone bodies were more active in the NEC subgroups, including both the NEC_Onset group and the NEC_FullEn group. The pathway of sphingolipid metabolism was more active in the Control_FullEn group. CONCLUSION Even after reaching the full enteral nutrition period, alpha diversity in infants with NEC who underwent surgery was lower than that in the control group infants. It may take more time to reestablish the normal gut flora of NEC infants after surgery. The pathways of the synthesis and degradation of ketone bodies and sphingolipid metabolism might be related to the pathogenesis of NEC and physical development after the occurrence of NEC.
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Affiliation(s)
- Huijia Lin
- Department of NICU, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Cuifang Xu
- Department of National Clinical Research Center, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Junjin Chen
- Department of NICU, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Xiaolu Ma
- Department of NICU, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Liping Shi
- Department of NICU, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Wei Shi
- Department of NICU, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Lizhong Du
- Department of NICU, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Yan Ni
- Department of National Clinical Research Center, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
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16
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Shajiei A, Liu L, Seinen J, Dieperink W, Hammerschmidt S, Maarten van Dijl J, Harmsen HJ. Specific associations between fungi and bacteria in broncho-alveolar aspirates from mechanically ventilated intensive care unit patients. Virulence 2022; 13:2022-2031. [PMID: 36384379 PMCID: PMC9673952 DOI: 10.1080/21505594.2022.2146568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The detection of fungi in the human respiratory tract may represent contamination, colonization or a respiratory infection. To develop effective management strategies, a more accurate and comprehensive understanding of the lung fungal microbiome is required. Therefore, the objective of the present study was to define the "mycobiome" of mechanically ventilated patients admitted to an intensive care unit (ICU) using broncho-alveolar aspirate ("sputum") samples and correlate this with clinical parameters and the bacterial microbiota. To this end, the mycobiome of 33 sputum samples was analyzed by Internal Transcribed Spacer2 (ITS2) amplicon sequencing of the ribosomal operons. The results show that in the investigated sputa of mechanically ventilated patients Candida spp. were most frequently detected, independent of pneumonia or antimicrobial therapy. The presence of Candida excluded in most cases the presence of Malassezia, which was the second most-frequently encountered fungus. Moreover, a hierarchical clustering of the sequence data indicated a patient-specific mycobiome. Fungi detected by culturing (Candida and Aspergillus) were also detected through ITS2 sequencing, but other yeasts and fungi were only detectable by sequencing. While Candida showed no correlations with identified bacterial groups, the presence of Malassezia and Rhodotorula correlated with oral bacteria associated with periodontal disease. Likewise, Cladosporium correlated with other oral bacteria, whereas Saccharomyces correlated more specifically with dental plaque bacteria and Alternaria with the nasal-throat-resident bacteria Neisseria, Haemophilus and Moraxella. In conclusion, ITS2 sequencing of sputum samples uncovered patient-specific lung mycobiomes, which were only partially detectable by culturing, and which could be correlated to specific nasal-oral-pharyngeal niches.
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Affiliation(s)
- Arezoo Shajiei
- Department of Medical Microbiology and Infection prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands,Department of Critical Care, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Lei Liu
- Department of Medical Microbiology and Infection prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jolien Seinen
- Department of Medical Microbiology and Infection prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands,Department of Molecular Genetics and Infection Biology, Interfaculty Institute for Genetics and Functional Genomics, Center for Functional Genomics of Microbes, University of Greifswald, Greifswald, Germany
| | - Willem Dieperink
- Department of Critical Care, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Sven Hammerschmidt
- Department of Molecular Genetics and Infection Biology, Interfaculty Institute for Genetics and Functional Genomics, Center for Functional Genomics of Microbes, University of Greifswald, Greifswald, Germany
| | - Jan Maarten van Dijl
- Department of Medical Microbiology and Infection prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Hermie J.M. Harmsen
- Department of Medical Microbiology and Infection prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands,CONTACT Hermie J.M. Harmsen
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17
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Moschino L, Verlato G, Duci M, Cavicchiolo ME, Guiducci S, Stocchero M, Giordano G, Fascetti Leon F, Baraldi E. The Metabolome and the Gut Microbiota for the Prediction of Necrotizing Enterocolitis and Spontaneous Intestinal Perforation: A Systematic Review. Nutrients 2022; 14:nu14183859. [PMID: 36145235 PMCID: PMC9506026 DOI: 10.3390/nu14183859] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 09/13/2022] [Accepted: 09/13/2022] [Indexed: 11/26/2022] Open
Abstract
Necrotizing enterocolitis (NEC) is the most devastating gastrointestinal emergency in preterm neonates. Research on early predictive biomarkers is fundamental. This is a systematic review of studies applying untargeted metabolomics and gut microbiota analysis to evaluate the differences between neonates affected by NEC (Bell’s stage II or III), and/or by spontaneous intestinal perforation (SIP) versus healthy controls. Five studies applying metabolomics (43 cases, 95 preterm controls) and 20 applying gut microbiota analysis (254 cases, 651 preterm controls, 22 term controls) were selected. Metabolomic studies utilized NMR spectroscopy or mass spectrometry. An early urinary alanine/histidine ratio >4 showed good sensitivity and predictive value for NEC in one study. Samples collected in proximity to NEC diagnosis demonstrated variable pathways potentially related to NEC. In studies applying untargeted gut microbiota analysis, the sequencing of the V3−V4 or V3 to V5 regions of the 16S rRNA was the most used technique. At phylum level, NEC specimens were characterized by increased relative abundance of Proteobacteria compared to controls. At genus level, pre-NEC samples were characterized by a lack or decreased abundance of Bifidobacterium. Finally, at the species level Bacteroides dorei, Clostridium perfringens and perfringens-like strains dominated early NEC specimens, whereas Clostridium butyricum, neonatale and Propionibacterium acnei those at disease diagnosis. Six studies found a lower Shannon diversity index in cases than controls. A clear separation of cases from controls emerged based on UniFrac metrics in five out of seven studies. Importantly, no studies compared NEC versus SIP. Untargeted metabolomics and gut microbiota analysis are interrelated strategies to investigate NEC pathophysiology and identify potential biomarkers. Expression of quantitative measurements, data sharing via biorepositories and validation studies are fundamental to guarantee consistent comparison of results.
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Affiliation(s)
- Laura Moschino
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, Padova University Hospital, 35128 Padova, Italy
- Institute of Paediatric Research, Città della Speranza, Laboratory of Mass Spectrometry and Metabolomics, 35127 Padova, Italy
- Correspondence: ; Tel.: +39-049-821-3548
| | - Giovanna Verlato
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, Padova University Hospital, 35128 Padova, Italy
| | - Miriam Duci
- Paediatric Surgery, Department of Women’s and Children’s Health, Padova University Hospital, 35128 Padova, Italy
| | - Maria Elena Cavicchiolo
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, Padova University Hospital, 35128 Padova, Italy
| | - Silvia Guiducci
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, Padova University Hospital, 35128 Padova, Italy
| | - Matteo Stocchero
- Institute of Paediatric Research, Città della Speranza, Laboratory of Mass Spectrometry and Metabolomics, 35127 Padova, Italy
- Laboratory of Mass Spectrometry and Metabolomics, Department of Women’s and Children’s Health, Padova University Hospital, 35128 Padova, Italy
| | - Giuseppe Giordano
- Institute of Paediatric Research, Città della Speranza, Laboratory of Mass Spectrometry and Metabolomics, 35127 Padova, Italy
- Laboratory of Mass Spectrometry and Metabolomics, Department of Women’s and Children’s Health, Padova University Hospital, 35128 Padova, Italy
| | - Francesco Fascetti Leon
- Paediatric Surgery, Department of Women’s and Children’s Health, Padova University Hospital, 35128 Padova, Italy
| | - Eugenio Baraldi
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, Padova University Hospital, 35128 Padova, Italy
- Institute of Paediatric Research, Città della Speranza, Laboratory of Mass Spectrometry and Metabolomics, 35127 Padova, Italy
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18
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Subramanian S, Geng H, Du C, Chou PM, Bu HF, Wang X, Swaminathan S, Tan SC, Ridlon JM, De Plaen IG, Tan XD. Feeding mode influences dynamic gut microbiota signatures and affects susceptibility to anti-CD3 mAb-induced intestinal injury in neonatal mice. Am J Physiol Gastrointest Liver Physiol 2022; 323:G205-G218. [PMID: 35819158 PMCID: PMC9394775 DOI: 10.1152/ajpgi.00337.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 07/01/2022] [Accepted: 07/02/2022] [Indexed: 01/31/2023]
Abstract
Feeding modes influence the gut microbiome, immune system, and intestinal barrier homeostasis in neonates; how feeding modes impact susceptibility to neonatal gastrointestinal (GI) diseases is still uncertain. Here, we investigated the impact of dam feeding (DF) and formula feeding (FF) on features of the gut microbiome and physiological inflammation during the first 2 days of postnatal development and on the susceptibility to intestinal injury related to the inflammatory state in neonatal mouse pups. 16S rRNA sequencing data revealed microbiome changes, lower α-diversity, and a distinct pattern of β-diversity including expansion of f_Enterobacteriaceae and f_Enterococcaceae in the ileum of FF pups compared with DF pups by postnatal day (P)2. Together with gut dysbiosis, the FF cohort also had greater ileal mucosa physiological inflammatory activity compared with DF pups by P2 but maintained normal histological features. Interestingly, FF but not DF mouse pups developed necrotizing enterocolitis (NEC)-like intestinal injury within 24 h after anti-CD3 mAb treatment, suggesting that FF influences the susceptibility to intestinal injury in neonates. We further found that NEC-like incidence in anti-CD3 mAb-treated FF neonatal pups was attenuated by antibiotic treatment. Collectively, our data suggest that FF predisposes mouse pups to anti-CD3 mAb-induced intestinal injury due to abnormal f_Enterobacteriaceae and f_Enterococcaceae colonization. These findings advance our understanding of FF-associated microbial colonization and intestinal inflammation, which may help inform the development of new therapeutic approaches to GI diseases like NEC in infants.NEW & NOTEWORTHY This report shows that a feeding mode profoundly affects gut colonization in neonatal mice. Furthermore, our results demonstrate that formula feeding predisposes mouse pups to anti-CD3 mAb-induced necrotizing enterocolitis (NEC)-like intestinal injury upon inadequate microbial colonization. The study suggests the role of the combined presence of formula feeding-associated dysbiosis and mucosal inflammation in the pathogenesis of NEC and provides a new mouse model to study this disease.
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Affiliation(s)
- Saravanan Subramanian
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Center for Intestinal and Liver Inflammation Research, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Hua Geng
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Center for Intestinal and Liver Inflammation Research, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Chao Du
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Center for Intestinal and Liver Inflammation Research, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Pauline M Chou
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Heng-Fu Bu
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Center for Intestinal and Liver Inflammation Research, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Xiao Wang
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Center for Intestinal and Liver Inflammation Research, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Suchitra Swaminathan
- Division of Rheumatology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Stephanie C Tan
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Center for Intestinal and Liver Inflammation Research, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Jason M Ridlon
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Isabelle G De Plaen
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
- Division of Neonatology, Department of Pediatrics, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
| | - Xiao-Di Tan
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Center for Intestinal and Liver Inflammation Research, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
- Department of Research and Development, Jesse Brown Department of Veterans Affairs Medical Center, Chicago, Illinois
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19
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Soto LF, Romaní AC, Jiménez-Avalos G, Silva Y, Ordinola-Ramirez CM, Lopez Lapa RM, Requena D. Immunoinformatic analysis of the whole proteome for vaccine design: An application to Clostridium perfringens. Front Immunol 2022; 13:942907. [PMID: 36110855 PMCID: PMC9469472 DOI: 10.3389/fimmu.2022.942907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/02/2022] [Indexed: 11/21/2022] Open
Abstract
Clostridium perfringens is a dangerous bacterium and known biological warfare weapon associated with several diseases, whose lethal toxins can produce necrosis in humans. However, there is no safe and fully effective vaccine against C. perfringens for humans yet. To address this problem, we computationally screened its whole proteome, identifying highly immunogenic proteins, domains, and epitopes. First, we identified that the proteins with the highest epitope density are Collagenase A, Exo-alpha-sialidase, alpha n-acetylglucosaminidase and hyaluronoglucosaminidase, representing potential recombinant vaccine candidates. Second, we further explored the toxins, finding that the non-toxic domain of Perfringolysin O is enriched in CTL and HTL epitopes. This domain could be used as a potential sub-unit vaccine to combat gas gangrene. And third, we designed a multi-epitope protein containing 24 HTL-epitopes and 34 CTL-epitopes from extracellular regions of transmembrane proteins. Also, we analyzed the structural properties of this novel protein using molecular dynamics. Altogether, we are presenting a thorough immunoinformatic exploration of the whole proteome of C. perfringens, as well as promising whole-protein, domain-based and multi-epitope vaccine candidates. These can be evaluated in preclinical trials to assess their immunogenicity and protection against C. perfringens infection.
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Affiliation(s)
- Luis F. Soto
- Escuela Profesional de Genética y Biotecnología, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Ana C. Romaní
- Escuela Profesional de Genética y Biotecnología, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Gabriel Jiménez-Avalos
- Departamento de Ciencias Celulares y Moleculares, Laboratorio de Bioinformática, Biología Molecular y Desarrollos Tecnológicos, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia (UPCH), Lima, Peru
| | - Yshoner Silva
- Departamento de Salud Pública, Facultad de Ciencias de la Salud, Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas, Chachapoyas, Peru
| | - Carla M. Ordinola-Ramirez
- Departamento de Salud Pública, Facultad de Ciencias de la Salud, Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas, Chachapoyas, Peru
| | - Rainer M. Lopez Lapa
- Departamento de Salud Pública, Facultad de Ciencias de la Salud, Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas, Chachapoyas, Peru
- Instituto de Ganadería y Biotecnología, Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas, Chachapoyas, Peru
| | - David Requena
- Laboratory of Cellular Biophysics, The Rockefeller University, New York, NY, United States
- *Correspondence: David Requena,
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20
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Liu L, Ao D, Cai X, Huang P, Cai N, Lin S, Wu B. Early gut microbiota in very low and extremely low birth weight preterm infants with feeding intolerance: a prospective case-control study. J Microbiol 2022; 60:1021-1031. [PMID: 35984614 PMCID: PMC9390111 DOI: 10.1007/s12275-022-2180-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/30/2022] [Accepted: 07/07/2022] [Indexed: 11/27/2022]
Affiliation(s)
- Ling Liu
- Jinan University, Guangzhou, Guangdong, 510000, China
- Department of Pediatrics, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524000, China
| | - Dang Ao
- Department of Pediatrics, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524000, China
| | - Xiangsheng Cai
- University of the Chinese Academy of Sciences - Shenzhen Hospital, Shenzhen, Guangdong, 518000, China
| | - Peiyi Huang
- Department of Pediatrics, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524000, China
| | - Nali Cai
- Department of Pediatrics, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524000, China
| | - Shaozhu Lin
- Department of Pediatrics, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524000, China
| | - Benqing Wu
- Jinan University, Guangzhou, Guangdong, 510000, China.
- University of the Chinese Academy of Sciences - Shenzhen Hospital, Shenzhen, Guangdong, 518000, China.
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21
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Qing H, Huang S, Zhan K, Zhao L, Zhang J, Ji C, Ma Q. Combined Toxicity Evaluation of Ochratoxin A and Aflatoxin B1 on Kidney and Liver Injury, Immune Inflammation, and Gut Microbiota Alteration Through Pair-Feeding Pullet Model. Front Immunol 2022; 13:920147. [PMID: 35967406 PMCID: PMC9373725 DOI: 10.3389/fimmu.2022.920147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 06/13/2022] [Indexed: 12/13/2022] Open
Abstract
Ochratoxin A (OTA) and aflatoxin B1 (AFB1) are often co-contaminated, but their synergistic toxicity in poultry is limitedly described. Furthermore, the traditional ad libitum feeding model may fail to distinguish the specific impact of mycotoxins on the biomarkers and the indirect effect of mildew on the palatability of feed. A pair-feeding model was introduced to investigate the specific effect and the indirect effect of the combined toxicity of OTA and AFB1, which were independent and dependent on feed intake, respectively. A total of 180 one-day-old pullets were randomly divided into 3 groups with 6 replicates, and each replicate contained 10 chicks. The control group (Group A) and the pair-feeding group (Group B) received the basal diet without mycotoxin contamination. Group C was administrated with OTA- and AFB1-contaminated feed (101.41 μg/kg of OTA + 20.10 μg/kg of AFB1). The scale of feeding in Group B matched with the feed intake of Group C. The trial lasted 42 days. Compared with the control group, co-contamination of OTA and AFB1 in feed could adversely affect the growth performance (average daily feed intake (ADFI), body weight (BW), average daily weight gain (ADG), feed conversion ratio (FCR), and shank length (SL)), decrease the relative weight of the spleen (p < 0.01), and increase the relative weight of the kidney (p < 0.01). Moreover, the reduction of feed intake could also adversely affect the growth performance (BW, ADG, and SL), but not as severely as mycotoxins do. Apart from that, OTA and AFB1 also activated the antioxidative and inflammation reactions of chicks, increasing the level of catalase (CAT), reactive oxygen species (ROS), and interleukin-8 (IL-8) while decreasing the level of IL-10 (p < 0.01), which was weakly influenced by the feed intake reduction. In addition, OTA and AFB1 induced histopathological changes and apoptosis in the kidney and liver as well as stimulated the growth of pernicious bacteria to cause toxic effects. There were no histopathological changes and apoptosis in the kidney and liver of the pair-feeding group. The combined toxicity of OTA and AFB1 had more severe effects on pullets than merely reducing feed supply. However, the proper reduction of the feed intake could improve pullets’ physical health by enriching the bacteria Lactobacillus, Phascolarctobacterium, Bacteroides, Parabacteroides, and Barnesiella.
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Affiliation(s)
- Hanrui Qing
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shimeng Huang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Kai Zhan
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Lihong Zhao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jianyun Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Cheng Ji
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Qiugang Ma
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
- *Correspondence: Qiugang Ma,
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22
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Kean IRL, Wagner J, Wijeyesekera A, De Goffau M, Thurston S, Clark JA, White DK, Ridout J, Agrawal S, Kayani R, O'Donnell R, Ramnarayan P, Peters MJ, Klein N, Holmes E, Parkhill J, Baker S, Pathan N. Profiling gut microbiota and bile acid metabolism in critically ill children. Sci Rep 2022; 12:10432. [PMID: 35729169 PMCID: PMC9213539 DOI: 10.1038/s41598-022-13640-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 05/26/2022] [Indexed: 11/08/2022] Open
Abstract
Broad-spectrum antimicrobial use during the treatment of critical illness influences gastrointestinal fermentation endpoints, host immune response and metabolic activity including the conversion of primary to secondary bile acids. We previously observed reduced fermentation capacity in the faecal microbiota of critically ill children upon hospital admission. Here, we further explore the timecourse of the relationship between the microbiome and bile acid profile in faecal samples collected from critically ill children. The microbiome was assayed by sequencing of the 16S rRNA gene, and faecal water bile acids were measured by liquid chromatography mass spectrometry. In comparison to admission faecal samples, members of the Lachnospiraceae recovered during the late-acute phase (days 8-10) of hospitalisation. Patients with infections had a lower proportion of Lachnospiraceae in their gut microbiota than controls and patients with primary admitting diagnoses. Keystone species linked to ecological recovery were observed to decline with the length of PICU admission. These species were further suppressed in patients with systemic infection, respiratory failure, and undergoing surgery. Bile acid composition recovers quickly after intervention for critical illness which may be aided by the compositional shift in Lachnospiraceae. Our findings suggest gut microbiota recovery can be readily assessed via measurement of faecal bile acids.
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Affiliation(s)
| | - Joseph Wagner
- The Peter Doherty Institute for Infection and Immunity, Melbourne Health, Melbourne, Australia
- Wellcome Sanger Institute, Cambridge, United Kingdom
| | - Anisha Wijeyesekera
- Department of Food and Nutritional Sciences, University of Reading, Reading, United Kingdom
| | - Marcus De Goffau
- Wellcome Sanger Institute, Cambridge, United Kingdom
- Department of Experimental Vascular Medicine, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Sarah Thurston
- Department of Paediatrics, University of Cambridge, Cambridge, United Kingdom
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
| | - John A Clark
- Department of Paediatrics, University of Cambridge, Cambridge, United Kingdom
| | - Deborah K White
- Department of Paediatrics, University of Cambridge, Cambridge, United Kingdom
| | - Jenna Ridout
- Department of Paediatrics, University of Cambridge, Cambridge, United Kingdom
- EACH, Milton, Cambridge, United Kingdom
| | - Shruti Agrawal
- Department of Paediatrics, University of Cambridge, Cambridge, United Kingdom
- Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Riaz Kayani
- Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Roddy O'Donnell
- Department of Paediatrics, University of Cambridge, Cambridge, United Kingdom
- Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Padmanabhan Ramnarayan
- Paediatric Intensive Care Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
- St Mary's Hospital, London, United Kingdom
| | - Mark J Peters
- Paediatric Intensive Care Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
- UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Nigel Klein
- Paediatric Intensive Care Unit, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
- UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Elaine Holmes
- Section of Biomolecular Medicine, Division of Systems Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Julian Parkhill
- Wellcome Sanger Institute, Cambridge, United Kingdom
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Stephen Baker
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, United Kingdom
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Nazima Pathan
- Department of Paediatrics, University of Cambridge, Cambridge, United Kingdom
- Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge, United Kingdom
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23
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de Smit MJ, Rahajoe PS, Raveling-Eelsing E, Lisotto P, Harmsen HJM, Kertia N, Vissink A, Westra J. Influence of Oral Microbiota on the Presence of IgA Anti-Citrullinated Protein Antibodies in Gingival Crevicular Fluid. FRONTIERS IN ORAL HEALTH 2022; 3:904711. [PMID: 35784663 PMCID: PMC9243218 DOI: 10.3389/froh.2022.904711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/06/2022] [Indexed: 11/17/2022] Open
Abstract
Introduction The relation between rheumatoid arthritis (RA) and periodontitis (PD) has been investigated ever since the discovery of the citrullinating enzyme peptidyl arginine deaminase presents in the oral bacterium Porphyromonas gingivalis. Recently, we demonstrated the presence of RA autoantibodies, especially of IgA anti-citrullinated protein antibody (ACPA), in gingival crevicular fluid (GCF) of Indonesian patients with and without RA or PD which might indicate the local formation of RA antibodies in the periodontium. Aim The purpose of this study was to assess whether the subgingival microbiome is related to the presence of IgA ACPA in the GCF of healthy individuals with or without PD. Patients and Methods Healthy individuals with a known periodontal status and high IgA ACPA (>0.1 U/ml) in GCF (n = 27) were selected and matched for age, gender, periodontal status, and smoking status with 27 healthy individuals without IgA ACPA in their GCF. Taxonomic profiling of the subgingival microbiome was based on bacterial 16S rRNA gene sequencing. Downstream analyses were performed to assess compositional differences between healthy subjects with or without IgA ACPA in GCF and with or without PD. Results Between groups with or without PD, or with or without IgA ACPA in GCF, no differences in alpha diversity were seen. Beta diversity was different between groups with or without PD (p < 0.0001), and a trend was seen in subjects with PD between subjects with or without IgA ACPA in GCF (p = 0.084). Linear discriminant analysis effect size (LEfSe) revealed no significant differences in the total population between subjects with IgA ACPA compared to subjects without IgA ACPA in GCF. Although Porphyromonas was not identified by LEfSe, its relative abundance was significantly higher in healthy individuals with high IgA ACPA in GCF compared to individuals without IgA ACPA in GCF (p = 0.0363). Zooming in on the subgroup with PD, LEfSe revealed that species Neisseriaceae, Tannerella, and Haemophilus were more abundant in the subjects with IgA ACPA in GCF compared to subjects without IgA ACPA in GCF. Conclusion Periodontitis and certain taxa, including Porphyromonas, seem to be associated with the local presence of ACPA in the periodontium.
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Affiliation(s)
- Menke J. de Smit
- Department of Dentistry, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | | | - Elisabeth Raveling-Eelsing
- Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Paola Lisotto
- Department of Medical Microbiology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Hermie J. M. Harmsen
- Department of Medical Microbiology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Nyoman Kertia
- Department of Rheumatology, Dr. Sardjito General Hospital, Yogyakarta, Indonesia
| | - Arjan Vissink
- Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Johanna Westra
- Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- *Correspondence: Johanna Westra
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24
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Bourgonje AR, Roo-Brand G, Lisotto P, Sadaghian Sadabad M, Reitsema RD, de Goffau MC, Faber KN, Dijkstra G, Harmsen HJM. Patients With Inflammatory Bowel Disease Show IgG Immune Responses Towards Specific Intestinal Bacterial Genera. Front Immunol 2022; 13:842911. [PMID: 35693832 PMCID: PMC9174456 DOI: 10.3389/fimmu.2022.842911] [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: 12/24/2021] [Accepted: 04/25/2022] [Indexed: 12/26/2022] Open
Abstract
Introduction Inflammatory bowel disease (IBD) is characterized by a disturbed gut microbiota composition. Patients with IBD have both elevated mucosal and serum levels of IgG-antibodies directed against bacterial antigens, including flagellins. In this study, we aimed to determine to which intestinal bacteria the humoral immune response is directed to in patients with IBD. Methods Fecal and serum samples were collected from patients with IBD (n=55) and age- and sex-matched healthy controls (n=55). Fecal samples were incubated with autologous serum and IgG-coated fractions were isolated by magnetic-activated cell sorting (MACS) and its efficiency was assessed by flow cytometry. The bacterial composition of both untreated and IgG-coated fecal samples was determined by 16S rRNA-gene Illumina sequencing. Results IgG-coated fecal samples were characterized by significantly lower microbial diversity compared to the fecal microbiome. Both in patients with IBD and controls, serum IgG responses were primarily directed to Streptococcus, Lactobacillus, Lactococcus, Enterococcus, Veillonella and Enterobacteriaceae, as well as against specific Lachnospiraceae bacteria, including Coprococcus and Dorea (all P<0.001), and to Ruminococcus gnavus-like bacteria (P<0.05). In contrast, serological IgG responses against typical commensal, anaerobic and colonic microbial species were rather low, e.g. to the Lachnospiraceae members Roseburia and Blautia, to Faecalibacterium, as well as to Bacteroides. Patients with IBD showed more IgG-coating of Streptococcus, Lactobacillus, and Lactococcus bacteria compared to healthy controls (all P<0.05). No differences in IgG-coated bacterial fractions were observed between Crohn's disease and ulcerative colitis, between active or non-active disease, nor between different disease locations. Conclusion The IgG immune response is specifically targeted at distinct intestinal bacterial genera that are typically associated with the small intestinal microbiota, whereas responses against more colonic-type commensals are lower, which was particularly the case for patients with IBD. These findings may be indicative of a strong immunological exposure to potentially pathogenic intestinal bacteria in concordance with relative immune tolerance against commensal bacteria.
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Affiliation(s)
- Arno R Bourgonje
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Geesje Roo-Brand
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Paola Lisotto
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Mehdi Sadaghian Sadabad
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Rosanne D Reitsema
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Marcus C de Goffau
- Department of Vascular Medicine, University of Amsterdam, Amsterdam University Medical Center, Amsterdam, Netherlands.,Wellcome Genome Campus, Wellcome Sanger Institute, Cambridge, United Kingdom
| | - Klaas Nico Faber
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Gerard Dijkstra
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Hermie J M Harmsen
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
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25
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Abstract
Preterm infants are at higher risk of mortality and morbidity compared with those born at term. Nutrition-related morbidities include poor growth, immune deficiency, nutritional deficiencies, and adverse long-term neurodevelopment. In addition to macronutrients, many nutritional supplements have been used to enhance growth and development, and decrease infections. Nutrients can enhance preterm infants' immune status, optimize the microbiome, improve growth and development, and influence the risk of necrotizing enterocolitis, sepsis, and other outcomes.
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Affiliation(s)
- Mohan Pammi
- Section of Neonatology, Department of Pediatrics Baylor College of Medicine & Texas Children's Hospital Houston, TX 77030, USA.
| | - Ravi M. Patel
- Department of Pediatrics, Emory University, Atlanta, Georgia
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26
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Abstract
Clostridium perfringens, a prevalent Gram-positive bacterium, causes necrotic diseases associated with abundant life loss and economic burdens of billions of USD. The mechanism of C. perfringens-induced necrotic diseases remains largely unknown, in part, because of the lack of effective animal models and the presence of a large array of exotoxins and diverse disease manifestations from the skin and deep tissues to the gastrointestinal tract. In the light of the advancement of medical and veterinary research, a large body of knowledge is accumulating on the factors influencing C. perfringens-induced necrotic disease onset, development, and outcomes. Here, we present an overview of the key virulence factors of C. perfringens exotoxins. Subsequently, we focus on comprehensively reviewing C. perfringens-induced necrotic diseases such as myonecrosis, acute watery diarrhea, enteritis necroticans, preterm infant necrotizing enterocolitis, and chicken necrotic enteritis. We then review the current understanding on the mechanisms of myonecrosis and enteritis in relation to the immune system and intestinal microbiome. Based on these discussions, we then review current preventions and treatments of the necrotic diseases and propose potential new intervention options. The purpose of this review is to provide an updated and comprehensive knowledge on the role of the host–microbe interaction to develop new interventions against C. perfringens-induced necrotic diseases.
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Newton K, Gonzalez E, Pitre FE, Brereton NJB. Microbial community origin and fate through a rural wastewater treatment plant. Environ Microbiol 2022; 24:2516-2542. [PMID: 35466495 DOI: 10.1111/1462-2920.16025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 04/20/2022] [Indexed: 11/29/2022]
Abstract
Conventional wastewater treatment relies on a complex microbiota; however, much of this community is still to be characterised. To better understand the origin, dynamics and fate of bacteria within a wastewater treatment plant: untreated primary wastewater, activated sludge, and post-treatment effluent were characterised. From 3,163 Exact Sequence Variants (ESVs), 860 were annotated to species-level. In primary wastewater, 28% of ESVs were putative bacterial species previously associated with humans, 14% with animals and 5% as common to the environment. Differential abundance analysis revealed significant relative reductions in ESVs from potentially humans-associated species from primary wastewater to activated sludge, and significant increases in ESVs from species associated with nutrient cycling. Between primary wastewater and effluent, 51% of ESVs from human-associated species did not significantly differ, and species such as Bacteroides massiliensis and Bacteroides dorei increased. These findings illustrate that activated sludge increased extracellular protease and urease-producing species, ammonia and nitrite oxidizers, denitrifiers and specific phosphorus accumulators. Although many human-associated species declined, some persisted in effluent, including strains of potential health or environmental concern. Species-level microbial assessment may be useful for understanding variation in wastewater treatment efficiency as well as for monitoring the release of microbes into surface water and the wider ecosystem. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Kymberly Newton
- Institut de Recherche en Biologie Végétale, Université de Montréal, Montréal, H1X 2B2, Canada
| | - Emmanuel Gonzalez
- Canadian Center for Computational Genomics, Department of Human Genetics, McGill University, Montréal, H3A 1A4, Canada
| | - Frederic E Pitre
- Institut de Recherche en Biologie Végétale, Université de Montréal, Montréal, H1X 2B2, Canada
| | - Nicholas J B Brereton
- Institut de Recherche en Biologie Végétale, Université de Montréal, Montréal, H1X 2B2, Canada
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Vasilescu IM, Chifiriuc MC, Pircalabioru GG, Filip R, Bolocan A, Lazăr V, Diţu LM, Bleotu C. Gut Dysbiosis and Clostridioides difficile Infection in Neonates and Adults. Front Microbiol 2022; 12:651081. [PMID: 35126320 PMCID: PMC8810811 DOI: 10.3389/fmicb.2021.651081] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 12/15/2021] [Indexed: 12/11/2022] Open
Abstract
In this review, we focus on gut microbiota profiles in infants and adults colonized (CDC) or infected (CDI) with Clostridioides difficile. After a short update on CDI epidemiology and pathology, we present the gut dysbiosis profiles associated with CDI in adults and infants, as well as the role of dysbiosis in C. difficile spores germination and multiplication. Both molecular and culturomic studies agree on a significant decrease of gut microbiota diversity and resilience in CDI, depletion of Firmicutes, Bacteroidetes, and Actinobacteria phyla and a high abundance of Proteobacteria, associated with low butyrogenic and high lactic acid-bacteria levels. In symptomatic cases, microbiota deviations are associated with high levels of inflammatory markers, such as calprotectin. In infants, colonization with Bifidobacteria that trigger a local anti-inflammatory response and abundance of Ruminococcus, together with lack of receptors for clostridial toxins and immunological factors (e.g., C. difficile toxins neutralizing antibodies) might explain the lack of clinical symptoms. Gut dysbiosis amelioration through administration of “biotics” or non-toxigenic C. difficile preparations and fecal microbiota transplantation proved to be very useful for the management of CDI.
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Affiliation(s)
- Iulia-Magdalena Vasilescu
- Department of Microbiology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- INBI “Prof. Dr. Matei Balş” – National Institute for Infectious Diseases, Bucharest, Romania
| | - Mariana-Carmen Chifiriuc
- Department of Microbiology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- Research Institute of the University of Bucharest, Bucharest, Romania
- Academy of Romanian Scientists, Bucharest, Romania
- The Romanian Academy, Bucharest, Romania
- *Correspondence: Mariana-Carmen Chifiriuc,
| | | | - Roxana Filip
- Faculty of Medicine and Biological Sciences, Stefan cel Mare University of Suceava, Suceava, Romania
- Regional County Emergency Hospital, Suceava, Romania
| | - Alexandra Bolocan
- Department of General Surgery, University Emergency Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Veronica Lazăr
- Department of Microbiology, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Lia-Mara Diţu
- Department of Microbiology, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Coralia Bleotu
- Department of Microbiology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- Research Institute of the University of Bucharest, Bucharest, Romania
- Ştefan S. Nicolau Institute of Virology, Romanian Academy, Bucharest, Romania
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Abstract
Meconium constitutes infants' first bowel movements postnatally. The consistency and microbial load of meconium are different from infant and adult stool. While recent evidence suggests that meconium is sterile in utero, rapid colonization occurs after birth. The meconium microbiome has been associated with negative health outcomes, but its composition is not well described, especially in preterm infants. Here, we characterized the meconium microbiomes from 330 very preterm infants (gestational ages 28 to 32 weeks) from 15 hospitals in Germany and in fecal samples from a subset of their mothers (N = 217). Microbiome profiles were compiled using 16S rRNA gene sequencing with negative and positive controls. The meconium microbiome was dominated by Bifidobacterium, Staphylococcus, and Enterococcus spp. and was associated with gestational age at birth and age at sample collection. Bifidobacterial abundance was negatively correlated with potentially pathogenic genera. The amount of bacterial DNA in meconium samples varied greatly across samples and was associated with the time since birth but not with gestational age or hospital site. In samples with low bacterial load, human mitochondrial sequences were highly amplified using commonly used, bacterial-targeted 16S rRNA primers. Only half of the meconium samples contained sufficient bacterial material to study the microbiome using a standard approach. To facilitate future meconium studies, we present a five-level scoring system (“MecBac”) that predicts the success of 16S rRNA bacterial sequencing for meconium samples. These findings provide a foundational characterization of an understudied portion of the human microbiome and will aid the design of future meconium microbiome studies. IMPORTANCE Meconium is present in the intestines of infants before and after birth and constitutes their first bowel movements postnatally. The consistency, composition and microbial load of meconium is largely different from infant and adult stool. While recent evidence suggests that meconium is sterile in utero, rapid colonization occurs after birth. The meconium microbiome has been associated with short-term and long-term negative health outcomes, but its composition is not yet well described, especially in preterm infants. We provide a characterization of the microbiome structure and composition of infant meconium and maternal feces from a large study cohort and propose a method to evaluate meconium samples for bacterial sequencing suitability. These findings provide a foundational characterization of an understudied portion of the human microbiome and will aid the design of future meconium microbiome studies.
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Kalteren WS, Bos AF, van Oeveren W, Hulscher JBF, Kooi EMW. Neonatal anemia relates to intestinal injury in preterm infants. Pediatr Res 2022; 91:1452-1458. [PMID: 34907357 PMCID: PMC8670618 DOI: 10.1038/s41390-021-01903-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/03/2021] [Accepted: 11/26/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Anemia is associated with decreased tissue oxygenation in preterm infants and may contribute to developing necrotizing enterocolitis (NEC). We aimed to investigate whether hemoglobin level is associated with intestinal injury, by comparing anemic infants 10 days prior to red blood cell (RBC) transfusion with non-anemic controls. METHODS A nested case-control study in which we matched anemic preterms (gestational age (GA) < 32 weeks) with non-anemic controls (1:1), based on GA, birth weight (BW), and postnatal age. We measured urinary intestinal fatty acid-binding protein, I-FABP, marker for intestinal injury, twice weekly. Simultaneously, we assessed splanchnic oxygen saturation (rsSO2) and rsSO2 variability. RESULTS Thirty-six cases and 36 controls were included (median GA 27.6 weeks, BW 1020 grams). Median I-FABP level was higher in cases from 6 days to 24-h before transfusion (median ranging: 4749-8064 pg/ml versus 2194-3751 pg/ml). RsSO2 and rsSO2 variability were lower in cases than controls shortly before transfusion. Hemoglobin levels correlated negatively with rsSO2 and rsSO2 variability in cases, and negatively with I-FABP in cases and controls together. CONCLUSIONS Urinary I-FABP levels were higher in anemic infants before RBC transfusion than in non-anemic matched controls, suggesting intestinal injury associated with anemia. This may predispose to NEC in some anemic preterm infants. IMPACT Anemia is a common comorbidity in preterm infants and may lead to impaired splanchnic oxygen saturation and intestinal tissue hypoxia, a proposed mechanism for NEC. Lower hemoglobin level is associated with higher urinary I-FABP levels, a marker for intestinal injury, both in anemic preterm infants and in cases and controls together. Lower splanchnic oxygen saturation and reduction of its variability are associated with higher urinary I-FABP levels in anemic preterm infants before their first RBC transfusion. These results support the hypothesis that anemia in very preterm infants results in intestinal cell injury, which may precede NEC development in some.
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Affiliation(s)
- Willemien S. Kalteren
- grid.4494.d0000 0000 9558 4598Division of Neonatology, Department of Pediatrics, Beatrix Children’s Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Arend F. Bos
- grid.4494.d0000 0000 9558 4598Division of Neonatology, Department of Pediatrics, Beatrix Children’s Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Jan B. F. Hulscher
- grid.4494.d0000 0000 9558 4598Division of Pediatric Surgery, Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Elisabeth M. W. Kooi
- grid.4494.d0000 0000 9558 4598Division of Neonatology, Department of Pediatrics, Beatrix Children’s Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Klerk DH, van Avezaath LK, Loeffen EAH, Hulscher JBF, Kooi EMW. Fetal-neonatal exposure to antibiotics and NEC development: A systematic review and meta-analysis. Front Pediatr 2022; 10:1102884. [PMID: 36727006 PMCID: PMC9885048 DOI: 10.3389/fped.2022.1102884] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 12/20/2022] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Fetal and neonatal exposure to antibiotics may contribute to the development of necrotizing enterocolitis (NEC) in preterm infants. This systematic review and meta-analysis investigate whether exposure to third trimester maternal antibiotics (MAB) and/or prolongation of empirical antibiotics (PEAB) are associated with NEC development in preterms. METHOD We included observational and randomized controlled studies, including those on preterm or very low birth weight (VLBW) infants, from MEDLINE and EMBASE, published between 1990 and June 2021. Exposure was defined as third trimester MAB and/or PEAB. The two reviewers independently performed study selection, data extraction, and quality assessment. RESULTS Three cohort studies compared third trimester MAB with no antibiotics. MAB was associated with lower NEC incidence, unadjusted pooled odds ratio (OR) is 0.57 (95% CI: 0.35-0.93). Twelve cohort studies showed that PEAB was associated with an increased risk of NEC. Ten observational cohort studies show an unadjusted OR of 2.72 (1.65-4.47), and two case-control studies show an unadjusted mean difference of 2.31 (0.94-3.68). Moderate to substantial heterogeneity was observed but decreased in studies with low risk of bias and large sample size. CONCLUSION Evidence suggests an association between MAB and decreased risk of NEC and an association between PEAB and increased risk of NEC. Further studies should confirm these associations and explore causality. SYSTEMATIC REVIEW REGISTRATION identifier [CRD42022304937].
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Affiliation(s)
- Daphne H Klerk
- Division of Neonatology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Lisanne K van Avezaath
- Division of Neonatology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Erik A H Loeffen
- Division of Pediatric Oncology/Hematology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Jan B F Hulscher
- Division of Pediatric Surgery, Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Elisabeth M W Kooi
- Division of Neonatology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
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Poorhassan F, Nemati F, Saffarian P, Mirhosseini SA, Motamedi MJ. Design of a chitosan-based nano vaccine against epsilon toxin of Clostridium perfringens type D and evaluation of its immunogenicity in BALB/c mice. Res Pharm Sci 2021; 16:575-585. [PMID: 34760006 PMCID: PMC8562408 DOI: 10.4103/1735-5362.327504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 03/03/2021] [Accepted: 09/26/2021] [Indexed: 11/04/2022] Open
Abstract
Background and purpose Clostridium perfringens is an anaerobic, spore-forming, and pathogenic bacterium that causes intestinal diseases in humans and animals. In these cases, therapeutic intervention is challenging; because the disease progresses much rapidly. This bacterium can produce 5 main toxins (alpha, beta, epsilon, iota, and a type of enterotoxin) among which the epsilon toxin (ETX) is used for bioterrorism. This toxin can be prevented by immunization with specific immunogenic vaccines. In the present research, we aimed at developing a recombinant chitosan-based nano-vaccine against ETX of C. perfringens and evaluate its effects on the antibody titration against epsilon toxin in BALB/c mice as the vaccine model. Experimental approach The etx gene from C. perfringens type D was cloned and expressed in E. coli. After analysis by SDS-PAGE and western blotting, the expressed products were purified, and the obtained proteins were used for immunization in mice as a chitosan nanoparticle containing recombinant, purified ETX, and protein. Findings/Results The results of ELISA showed that IgA antibody serum level increased sufficiently using recombinant protein with nanoparticle as an oral and injectable formulation. IgG antibody titers increased significantly after administrating the recombinant proteins with nanoparticles through both oral delivery and intravenous injection. Conclusion and implication In conclusion, the recombinant ETX is suggested as a good candidate for vaccine production against diseases caused by ETX of C. perfringens type D.
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Affiliation(s)
- Farnaz Poorhassan
- Department of Biology, School of Basic Sciences, Science and Research Branch, Islamic Azad University, Tehran, I.R. Iran
| | - Fahimeh Nemati
- Department of Biotechnology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, I.R. Iran
| | - Parvaneh Saffarian
- Department of Biology, School of Basic Sciences, Science and Research Branch, Islamic Azad University, Tehran, I.R. Iran
| | - Seyed Ali Mirhosseini
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, I.R. Iran
| | - Mohammad Javad Motamedi
- Molecular Biology Department, Green Gene Company, Tehran, I.R. Iran.,Department of Molecular Biology and Genetic Engineering, Stem Cell Technology Research Center, Tehran, I.R. Iran
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Hill L, Sharma R, Hart L, Popov J, Moshkovich M, Pai N. The neonatal microbiome in utero and beyond: perinatal influences and long-term impacts. J LAB MED 2021. [DOI: 10.1515/labmed-2021-0131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
The neonatal microbiome offers a valuable model for studying the origins of human health and disease. As the field of metagenomics expands, we also increase our understanding of early life influences on its development. In this review we will describe common techniques used to define and measure the microbiome. We will review in utero influences, normal perinatal development, and known risk factors for abnormal neonatal microbiome development. Finally, we will summarize current evidence that links early life microbial impacts on the development of chronic inflammatory diseases, obesity, and atopy.
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Affiliation(s)
- Lee Hill
- Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition , McMaster Children’s Hospital, McMaster University , Hamilton , Canada
- Department of Human Biology, Division of Exercise Science and Sports Medicine , University of Cape Town , Cape Town , South Africa
| | - Ruchika Sharma
- Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition , McMaster Children’s Hospital, McMaster University , Hamilton , Canada
- McMaster University , Hamilton , Canada
| | - Lara Hart
- Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition , McMaster Children’s Hospital, McMaster University , Hamilton , Canada
| | - Jelena Popov
- Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition , McMaster Children’s Hospital, McMaster University , Hamilton , Canada
- University College Cork, College of Medicine and Health , Cork , Ireland
| | - Michal Moshkovich
- Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition , McMaster Children’s Hospital, McMaster University , Hamilton , Canada
- Faculty of Health Sciences , McMaster University , Hamilton , Canada
| | - Nikhil Pai
- Department of Paediatrics, Division of Gastroenterology, Hepatology and Nutrition , McMaster Children’s Hospital, McMaster University , Hamilton , Canada
- Farncombe Family Digestive Health Research Institute , McMaster University , Hamilton , Canada
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Cao C, Chowdhury VS, Cline MA, Gilbert ER. The Microbiota-Gut-Brain Axis During Heat Stress in Chickens: A Review. Front Physiol 2021; 12:752265. [PMID: 34744792 PMCID: PMC8563997 DOI: 10.3389/fphys.2021.752265] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/29/2021] [Indexed: 12/20/2022] Open
Abstract
Heat stress is a global issue for the poultry industries with substantial annual economic losses and threats to bird health and welfare. When chickens are exposed to high ambient temperatures, like other species they undergo multiple physiological alterations, including behavioral changes, such as cessation of feeding, initiation of a stress signaling cascade, and intestinal immune, and inflammatory responses. The brain and gut are connected and participate in bidirectional communication via the nervous and humoral systems, this network collectively known as the gut-brain axis. Moreover, heat stress not only induces hyperthermia and oxidative stress at the gut epithelium, leading to impaired permeability and then susceptibility to infection and inflammation, but also alters the composition and abundance of the microbiome. The gut microflora, primarily via bacterially derived metabolites and hormones and neurotransmitters, also communicate via similar pathways to regulate host metabolic homeostasis, health, and behavior. Thus, it stands to reason that reshaping the composition of the gut microbiota will impact intestinal health and modulate host brain circuits via multiple reinforcing and complementary mechanisms. In this review, we describe the structure and function of the microbiota-gut-brain axis, with an emphasis on physiological changes that occur in heat-stressed poultry.
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Affiliation(s)
- Chang Cao
- Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Vishwajit S Chowdhury
- Laboratory of Stress Physiology and Metabolism, Faculty of Arts and Science, Kyushu University, Fukuoka, Japan
| | - Mark A Cline
- Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Elizabeth R Gilbert
- Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
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35
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Wang B, Zhou Y, Mao Y, Gong L, Li X, Xu S, Wang F, Guo Q, Zhang H, Li W. Dietary Supplementation With Lactobacillus plantarum Ameliorates Compromise of Growth Performance by Modulating Short-Chain Fatty Acids and Intestinal Dysbiosis in Broilers Under Clostridium perfringens Challenge. Front Nutr 2021; 8:706148. [PMID: 34722602 PMCID: PMC8551491 DOI: 10.3389/fnut.2021.706148] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 09/17/2021] [Indexed: 12/12/2022] Open
Abstract
Clostridium perfringens is an important zoonotic pathogen associated with food contamination and poisoning, gas gangrene, necrotizing enterocolitis or necrotic enteritis in humans and animals. Dysbacteriosis is supposedly associated with the development of C. perfringens infection induced necrotic enteritis, but the detailed relationship between intestinal health, microbiome, and C. perfringens infection-induced necrotic enteritis remains poorly understood. This research investigated the effect of probiotics on the growth performance and intestinal health of broilers, and the involved roles of intestinal microbiota and microbial metabolic functions under C. perfringens infection. Results showed that subclinical necrotic enteritis was successfully induced as evidenced by the significant lower body weight (BW), suppressed feed conversion ratio (FCR), decreased ileal villus height and mucosal barrier function, and increased ileal histopathological score and bursal weight index. Lactobacillus plantarum or Paenibacillus polymyxa significantly attenuated C. perfringens-induced compromise of growth performance (BW, FCR) and ileal mucosa damage as illustrated by the increased ileal villus height and villus/crypt ratio, the decreased ileal histopathological score and the enhanced ileal mucosal barrier function. L. plantarum also significantly alleviated C. perfringens-induced enlarged bursa of fabricius and the decreased levels of ileal total SCFAs, acetate, lactate, and butyrate. Furthermore, dietary L. plantarum improved C. perfringens infection-induced intestinal dysbiosis as evidenced by significantly enriched short-chain fatty acids-producing bacteria (Lachnospiraceae, Ruminococcaceae, Oscillospira, Faecalibacterium, Blautia), reduced drug-resistant bacteria (Bacteroides, Alistipes) and enteric pathogens (Escherichia coli, Bacteroides fragilis) and bacterial metabolic dysfunctions as illustrated by significantly increased bacterial fatty acid biosynthesis, decreased bacterial lipopolysaccharide biosynthesis, and antibiotic biosynthesis (streptomycin and vancomycin). Additionally, the BW and intestinal SCFAs were the principal factors affecting the bacterial communities and microbial metabolic functions. The above findings indicate that dietary with L. plantarum attenuates C. perfringens-induced compromise of growth performance and intestinal dysbiosis by increasing SCFAs and improving intestinal health in broilers.
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Affiliation(s)
- Baikui Wang
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China) of the Ministry of Agriculture, Key Laboratory of Animal Feed and Nutrition of Zhejiang, College of Animal Sciences, Institute of Animal Nutrition and Feed Sciences, Zhejiang University, Hangzhou, China
| | - Yuanhao Zhou
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China) of the Ministry of Agriculture, Key Laboratory of Animal Feed and Nutrition of Zhejiang, College of Animal Sciences, Institute of Animal Nutrition and Feed Sciences, Zhejiang University, Hangzhou, China
| | - Yulong Mao
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China) of the Ministry of Agriculture, Key Laboratory of Animal Feed and Nutrition of Zhejiang, College of Animal Sciences, Institute of Animal Nutrition and Feed Sciences, Zhejiang University, Hangzhou, China
| | - Li Gong
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China) of the Ministry of Agriculture, Key Laboratory of Animal Feed and Nutrition of Zhejiang, College of Animal Sciences, Institute of Animal Nutrition and Feed Sciences, Zhejiang University, Hangzhou, China.,School of Life Science and Engineering, Foshan University, Foshan, China
| | - Xiang Li
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China) of the Ministry of Agriculture, Key Laboratory of Animal Feed and Nutrition of Zhejiang, College of Animal Sciences, Institute of Animal Nutrition and Feed Sciences, Zhejiang University, Hangzhou, China
| | - Shujie Xu
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China) of the Ministry of Agriculture, Key Laboratory of Animal Feed and Nutrition of Zhejiang, College of Animal Sciences, Institute of Animal Nutrition and Feed Sciences, Zhejiang University, Hangzhou, China
| | - Fei Wang
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China) of the Ministry of Agriculture, Key Laboratory of Animal Feed and Nutrition of Zhejiang, College of Animal Sciences, Institute of Animal Nutrition and Feed Sciences, Zhejiang University, Hangzhou, China
| | - Qianpeng Guo
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China) of the Ministry of Agriculture, Key Laboratory of Animal Feed and Nutrition of Zhejiang, College of Animal Sciences, Institute of Animal Nutrition and Feed Sciences, Zhejiang University, Hangzhou, China
| | - Huihua Zhang
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Weifen Li
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China) of the Ministry of Agriculture, Key Laboratory of Animal Feed and Nutrition of Zhejiang, College of Animal Sciences, Institute of Animal Nutrition and Feed Sciences, Zhejiang University, Hangzhou, China
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Aldakheel FM, Abrar A, Munir S, Aslam S, Allemailem KS, Khurshid M, Ashfaq UA. Proteome-Wide Mapping and Reverse Vaccinology Approaches to Design a Multi-Epitope Vaccine against Clostridium perfringens. Vaccines (Basel) 2021; 9:1079. [PMID: 34696187 PMCID: PMC8539331 DOI: 10.3390/vaccines9101079] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/16/2021] [Accepted: 09/20/2021] [Indexed: 12/30/2022] Open
Abstract
C. perfringens is a highly versatile bacteria of livestock and humans, causing enteritis (a common food-borne illness in humans), enterotoxaemia (in which toxins are formed in the intestine which damage and destroy organs, i.e., the brain), and gangrene (wound infection). There is no particular cure for the toxins of C. perfringens. Supportive care (medical control of pain, intravenous fluids) is the standard treatment. Therefore, a multiple-epitope vaccine (MEV) should be designed to battle against C. perfringens infection. Furthermore, the main objective of this in silico investigation is to design an MEV that targets C. perfringens. For this purpose, we selected the top three proteins that were highly antigenic using immuno-informatics approaches, including molecular docking. B-cells, IFN-gamma, and T cells for target proteins were predicted and the most conserved epitopes were selected for further investigation. For the development of the final MEV, epitopes of LBL5, CTL17, and HTL13 were linked to GPGPG, AAY, and KK linkers. The vaccine N-end was joined to an adjuvant through an EAAK linker to improve immunogenicity. After the attachment of linkers and adjuvants, the final construct was 415 amino acids. B-cell and IFN-gamma epitopes demonstrate that the model structure is enhanced for humoral and cellular immune responses. To validate the immunogenicity and safety of the final construct, various physicochemical properties, and other properties such as antigenicity and non-allergens, were evaluated. Furthermore, molecular docking was carried out for verification of vaccine compatibility with the receptor, evaluated in silico. Also, in silico cloning was employed for the verification of the proper expression and credibility of the construct.
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Affiliation(s)
- Fahad M. Aldakheel
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh 11564, Saudi Arabia;
| | - Amna Abrar
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan; (A.A.); (S.M.); (S.A.)
| | - Samman Munir
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan; (A.A.); (S.M.); (S.A.)
| | - Sehar Aslam
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan; (A.A.); (S.M.); (S.A.)
| | - Khaled S. Allemailem
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 51452, Saudi Arabia;
| | - Mohsin Khurshid
- Department of Microbiology, Government College University, Faisalabad 38000, Pakistan;
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan; (A.A.); (S.M.); (S.A.)
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Rahajoe PS, de Smit MJ, Raveling-Eelsing E, du Teil Espina M, Stobernack T, Lisotto P, Harmsen HJM, van Dijl JM, Kertia N, Vissink A, Westra J. No Obvious Role for Suspicious Oral Pathogens in Arthritis Development. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18189560. [PMID: 34574484 PMCID: PMC8471642 DOI: 10.3390/ijerph18189560] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/01/2021] [Accepted: 09/01/2021] [Indexed: 12/13/2022]
Abstract
A particular role for Porphyromonas gingivalis (Pg) and Aggregatibacter actinomycetemcomitans (Aa) has been suggested in periodontitis and rheumatoid arthritis (RA), as these bacteria could initiate the formation of rheumatoid factor (RF) and anticitrullinated protein autoantibodies (ACPA). We assessed whether serum antibodies against Pg and Aa in RA patients and non-RA controls reflect the subgingival presence of Pg and Aa, and evaluated the relationship of these antibodies to the severity of periodontal inflammation and RA-specific serum autoantibodies. In 70 Indonesian RA patients and 70 non-RA controls, the subgingival presence of Pg and Aa was assessed by bacterial 16S rRNA gene sequencing, and serum IgG levels specific for Pg and Aa were determined. In parallel, serum levels of ACPA (ACPA:IgG,IgA) and RF (RF:IgM,IgA) were measured. The extent of periodontal inflammation was assessed by the periodontal inflamed surface area. In both RA patients and the controls, the presence of subgingival Pg and Aa was comparable, anti-Pg and anti-Aa antibody levels were associated with the subgingival presence of Pg and Aa, and anti-Pg did not correlate with ACPA or RF levels. The subgingival Pg and Aa were not related to RA. No noteworthy correlation was detected between the antibodies against Pg and Aa, and RA-specific autoantibodies.
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Affiliation(s)
- Poerwati S. Rahajoe
- Department of Oral and Maxillofacial Surgery, Dr. Sardjito General Hospital, Yogyakarta 55281, Indonesia;
- University Medical Center Groningen, Department of Oral and Maxillofacial Surgery, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands;
| | - Menke J. de Smit
- University Medical Center Groningen, Department of Oral and Maxillofacial Surgery, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands;
- University Medical Center Groningen, Department of Rheumatology and Clinical Immunology, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands; (E.R.-E.); (J.W.)
- Center for Dentistry and Oral Hygiene, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
- Correspondence: ; Tel.: +31-50-3613841
| | - Elisabeth Raveling-Eelsing
- University Medical Center Groningen, Department of Rheumatology and Clinical Immunology, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands; (E.R.-E.); (J.W.)
| | - Marines du Teil Espina
- University Medical Center Groningen, Department of Medical Microbiology, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands; (M.d.T.E.); (T.S.); (P.L.); (H.J.M.H.); (J.M.v.D.)
| | - Tim Stobernack
- University Medical Center Groningen, Department of Medical Microbiology, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands; (M.d.T.E.); (T.S.); (P.L.); (H.J.M.H.); (J.M.v.D.)
| | - Paola Lisotto
- University Medical Center Groningen, Department of Medical Microbiology, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands; (M.d.T.E.); (T.S.); (P.L.); (H.J.M.H.); (J.M.v.D.)
| | - Hermie J. M. Harmsen
- University Medical Center Groningen, Department of Medical Microbiology, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands; (M.d.T.E.); (T.S.); (P.L.); (H.J.M.H.); (J.M.v.D.)
| | - Jan Maarten van Dijl
- University Medical Center Groningen, Department of Medical Microbiology, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands; (M.d.T.E.); (T.S.); (P.L.); (H.J.M.H.); (J.M.v.D.)
| | - Nyoman Kertia
- Department of Rheumatology and Clinical Immunology, Dr. Sardjito General Hospital, Yogyakarta 55281, Indonesia;
| | - Arjan Vissink
- University Medical Center Groningen, Department of Oral and Maxillofacial Surgery, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands;
| | - Johanna Westra
- University Medical Center Groningen, Department of Rheumatology and Clinical Immunology, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands; (E.R.-E.); (J.W.)
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Otten AT, Bourgonje AR, Peters V, Alizadeh BZ, Dijkstra G, Harmsen HJM. Vitamin C Supplementation in Healthy Individuals Leads to Shifts of Bacterial Populations in the Gut-A Pilot Study. Antioxidants (Basel) 2021; 10:antiox10081278. [PMID: 34439526 PMCID: PMC8389205 DOI: 10.3390/antiox10081278] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/06/2021] [Accepted: 08/10/2021] [Indexed: 12/12/2022] Open
Abstract
Gut microbes are crucial to human health, but microbial composition is often disturbed in a number of human diseases. Accumulating evidence points to nutritional modulation of the gut microbiota as a potentially beneficial therapeutic strategy. Vitamin C (ascorbic acid) may be of particular interest as it has known antioxidant and anti-inflammatory properties. In this study, we investigated whether supplementation with high-dose vitamin C may favourably affect the composition of the gut microbiota. In this pilot study, healthy human participants received 1000 mg vitamin C supplementation daily for two weeks. Gut microbiota composition was analysed before and after intervention by performing faecal 16S rRNA gene sequencing. In total, 14 healthy participants were included. Daily supplementation of high-dose vitamin C led to an increase in the relative abundances of Lachnospiraceae (p < 0.05), whereas decreases were observed for Bacteroidetes (p < 0.01), Enterococci (p < 0.01) and Gemmiger formicilis (p < 0.05). In addition, trends for bacterial shifts were observed for Blautia (increase) and Streptococcus thermophilus (decrease). High-dose vitamin C supplementation for two weeks shows microbiota-modulating effects in healthy individuals, with several beneficial shifts of bacterial populations. This may be relevant as these bacteria have anti-inflammatory properties and strongly associate with gut health.
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Affiliation(s)
- Antonius T. Otten
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (A.T.O.); (A.R.B.); (V.P.); (G.D.)
| | - Arno R. Bourgonje
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (A.T.O.); (A.R.B.); (V.P.); (G.D.)
| | - Vera Peters
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (A.T.O.); (A.R.B.); (V.P.); (G.D.)
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands;
| | - Behrooz Z. Alizadeh
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands;
| | - Gerard Dijkstra
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (A.T.O.); (A.R.B.); (V.P.); (G.D.)
| | - Hermie J. M. Harmsen
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
- Correspondence: ; Tel.: +31-50-361-3480
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Premature neonatal gut microbial community patterns supporting an epithelial TLR-mediated pathway for necrotizing enterocolitis. BMC Microbiol 2021; 21:225. [PMID: 34362295 PMCID: PMC8343889 DOI: 10.1186/s12866-021-02285-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 07/21/2021] [Indexed: 01/04/2023] Open
Abstract
Background Necrotising enterocolitis (NEC) is a devastating bowel disease, primarily affecting premature infants, with a poorly understood aetiology. Prior studies have found associations in different cases with an overabundance of particular elements of the faecal microbiota (in particular Enterobacteriaceae or Clostridium perfringens), but there has been no explanation for the different results found in different cohorts. Immunological studies have indicated that stimulation of the TLR4 receptor is involved in development of NEC, with TLR4 signalling being antagonised by the activated TLR9 receptor. We speculated that differential stimulation of these two components of the signalling pathway by different microbiota might explain the dichotomous findings of microbiota-centered NEC studies. Here we used shotgun metagenomic sequencing and qPCR to characterise the faecal microbiota community of infants prior to NEC onset and in a set of matched controls. Bayesian regression was used to segregate cases from control samples using both microbial and clinical data. Results We found that the infants suffering from NEC fell into two groups based on their microbiota; one with low levels of CpG DNA in bacterial genomes and the other with high abundances of organisms expressing LPS. The identification of these characteristic communities was reproduced using an external metagenomic validation dataset. We propose that these two patterns represent the stimulation of a common pathway at extremes; the LPS-enriched microbiome suggesting overstimulation of TLR4, whilst a microbial community with low levels of CpG DNA suggests reduction of the counterbalance to TLR4 overstimulation. Conclusions The identified microbial community patterns support the concept of NEC resulting from TLR-mediated pathways. Identification of these signals suggests characteristics of the gastrointestinal microbial community to be avoided to prevent NEC. Potential pre- or pro-biotic treatments may be designed to optimise TLR signalling. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02285-0.
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Heida FH, Kooi EMW, Wagner J, Nguyen TY, Hulscher JBF, van Zoonen AGJF, Bos AF, Harmsen HJM, de Goffau MC. Weight shapes the intestinal microbiome in preterm infants: results of a prospective observational study. BMC Microbiol 2021; 21:219. [PMID: 34289818 PMCID: PMC8293572 DOI: 10.1186/s12866-021-02279-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 06/28/2021] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND The intestinal microbiome in preterm infants differs markedly from term infants. It is unclear whether the microbiome develops over time according to infant specific factors. METHODS We analysed (clinical) metadata - to identify the main factors influencing the microbiome composition development - and the first meconium and faecal samples til the 4th week via 16 S rRNA amplican sequencing. RESULTS We included 41 infants (gestational age 25-30 weeks; birth weight 430-990 g. Birth via Caesarean section (CS) was associated with placental insufficiency during pregnancy and lower BW. In meconium samples and in samples from weeks 2 and 3 the abundance of Escherichia and Bacteroides (maternal faecal representatives) were associated with vaginal delivery while Staphylococcus (skin microbiome representative) was associated with CS. Secondly, irrespective of the week of sampling or the mode of birth, a transition was observed as children children gradually increased in weight from a microbiome dominated by Staphylococcus (Bacilli) towards a microbiome dominated by Enterobacteriaceae (Gammaproteobacteria). CONCLUSIONS Our data show that the mode of delivery affects the meconium microbiome composition. They also suggest that the weight of the infant at the time of sampling is a better predictor for the stage of progression of the intestinal microbiome development/maturation than postconceptional age as it less confounded by various infant-specific factors.
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Affiliation(s)
- Fardou H Heida
- Division of Obstetrics & Gynecology, Isala Klinieken, University of Groningen, Zwolle, the Netherlands. .,Division of Pediatric Surgery Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.
| | - Elisabeth M W Kooi
- Division of Neonatology Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Josef Wagner
- Victorian Infectious Diseases Reference Laboratory, Peter Doherty Institute for Infection and Immunity, Royal Melbourne Hospital, Melbourne, Australia
| | - Thi-Yen Nguyen
- Division of Pediatric Surgery Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Jan B F Hulscher
- Division of Pediatric Surgery Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Anne G J F van Zoonen
- Division of Pediatric Surgery Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Arend F Bos
- Division of Neonatology Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Hermie J M Harmsen
- Division of Microbiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Marcus C de Goffau
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands.,Parasites and Microboes, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, United Kingdom
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Matsuoka T, Shimizu T, Minagawa T, Hiranuma W, Takeda M, Kakuta R, Kawamoto S. First case of an invasive Bacteroides dorei infection detected in a patient with a mycotic aortic aneurysm-raising a rebellion of major indigenous bacteria in humans: a case report and review. BMC Infect Dis 2021; 21:625. [PMID: 34193073 PMCID: PMC8247135 DOI: 10.1186/s12879-021-06345-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 06/21/2021] [Indexed: 02/05/2023] Open
Abstract
Background Bacteroides dorei is an anaerobic gram-negative bacterium first described in 2006. Because of the high similarity in mass spectra between B. dorei and Bacteroides vulgatus, discriminating between these species is arduous in clinical practice. In recent decades, 16S rRNA gene sequencing has been a complementary method for distinguishing taxonomically close bacteria, including B. dorei and B. vulgatus, at the genus and species levels. Consequently, B. dorei has been shown to contribute to some diseases, including type 1 autoimmune diabetes mellitus and atherosclerotic diseases. However, there are no reports on invasive infectious diseases caused by B. dorei. This report describes the first case of direct invasion and colonisation of human tissue by B. dorei, thus providing a warning regarding the previously proposed application of B. dorei as a live biotherapeutic for atherosclerotic diseases. Case presentation A 78-year-old Japanese man complained of intermittent chest/back pain and was diagnosed with a mycotic thoracic aortic aneurysm by enhanced computed tomography on admission. Despite strict blood pressure control and empirical antibiotic therapy, the patient’s condition worsened. To prevent aneurysmal rupture and eliminate infectious foci, the patient underwent surgical treatment. The resected specimen was subjected to tissue culture and 16S rRNA gene sequencing analysis to identify pathogenic bacteria. A few days after the surgery, culture and sequencing results revealed that the pathogen was B. dorei/B. vulgatus and B. dorei, respectively. The patient was successfully treated with appropriate antibacterial therapy and after improvement, was transferred to another hospital for rehabilitation on postoperative day 34. There was no recurrence of infection or aneurysm after the patient transfer. Conclusions This report describes the first case of invasive infectious disease caused by B. dorei, casting a shadow over its utilisation as a probiotic for atherosclerotic diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-021-06345-8.
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Affiliation(s)
- Takayuki Matsuoka
- Department of Cardiovascular Surgery, Tohoku Medical and Pharmaceutical University, 1-12-1 Fukumuro, Miyagino Ward, Sendai, Miyagi, 983-8512, Japan.
| | - Takuya Shimizu
- Department of Cardiovascular Surgery, Tohoku Medical and Pharmaceutical University, 1-12-1 Fukumuro, Miyagino Ward, Sendai, Miyagi, 983-8512, Japan
| | - Tadanori Minagawa
- Department of Cardiovascular Surgery, Tohoku Medical and Pharmaceutical University, 1-12-1 Fukumuro, Miyagino Ward, Sendai, Miyagi, 983-8512, Japan
| | - Wakiko Hiranuma
- Department of Cardiovascular Surgery, Tohoku Medical and Pharmaceutical University, 1-12-1 Fukumuro, Miyagino Ward, Sendai, Miyagi, 983-8512, Japan
| | - Miki Takeda
- Department of Cardiovascular Surgery, Tohoku Medical and Pharmaceutical University, 1-12-1 Fukumuro, Miyagino Ward, Sendai, Miyagi, 983-8512, Japan
| | - Risako Kakuta
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shunsuke Kawamoto
- Department of Cardiovascular Surgery, Tohoku Medical and Pharmaceutical University, 1-12-1 Fukumuro, Miyagino Ward, Sendai, Miyagi, 983-8512, Japan
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Antibiotic-induced disruption of the microbiome exacerbates chemotherapy-induced diarrhoea and can be mitigated with autologous faecal microbiota transplantation. Eur J Cancer 2021; 153:27-39. [PMID: 34130227 DOI: 10.1016/j.ejca.2021.05.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Chemotherapy is well documented to disrupt the gut microbiome, leading to poor treatment outcomes and a heightened risk of adverse toxicity. Although strong associations exist between its composition and gastrointestinal toxicity, its causal contribution remains unclear. Our inability to move beyond association has limited the development and implementation of microbial-based therapeutics in chemotherapy adjuncts with no clear rationale of how and when to deliver them. METHODS/RESULTS Here, we investigate the impact of augmenting the gut microbiome on gastrointestinal toxicity caused by the chemotherapeutic agent, methotrexate (MTX). Faecal microbiome transplantation (FMT) delivered after MTX had no appreciable impact on gastrointestinal toxicity. In contrast, disruption of the microbiome with antibiotics administered before chemotherapy exacerbated gastrointestinal toxicity, impairing mucosal recovery (P < 0.0001) whilst increasing diarrhoea severity (P = 0.0007) and treatment-related mortality (P = 0.0045). Importantly, these detrimental effects were reversed when the microbiome was restored using autologous FMT (P = 0.03), a phenomenon dictated by the uptake and subsequent expansion of Muribaculaceae. CONCLUSIONS These are the first data to show that clinically impactful symptoms of gastrointestinal toxicity are dictated by the microbiome and provide a clear rationale for how and when to target the microbiome to mitigate the acute and chronic complications caused by disruption of the gastrointestinal microenvironment. Translation of this new knowledge should focus on stabilising and strengthening the gut microbiome before chemotherapy and developing new microbial approaches to accelerate recovery of the mucosa. By controlling the depth and duration of mucosal injury, secondary consequences of gastrointestinal toxicity may be avoided.
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Abstract
Large clostridial toxins (LCTs) are a family of bacterial exotoxins that infiltrate and destroy target cells. Members of the LCT family include Clostridioides difficile toxins TcdA and TcdB, Paeniclostridium sordellii toxins TcsL and TcsH, Clostridium novyi toxin TcnA, and Clostridium perfringens toxin TpeL. Since the 19th century, LCT-secreting bacteria have been isolated from the blood, organs, and wounds of diseased individuals, and LCTs have been implicated as the primary virulence factors in a variety of infections, including C. difficile infection and some cases of wound-associated gas gangrene. Clostridia express and secrete LCTs in response to various physiological signals. LCTs invade host cells by binding specific cell surface receptors, ultimately leading to internalization into acidified vesicles. Acidic pH promotes conformational changes within LCTs, which culminates in translocation of the N-terminal glycosyltransferase and cysteine protease domain across the endosomal membrane and into the cytosol, leading first to cytopathic effects and later to cytotoxic effects. The focus of this review is on the role of LCTs in infection and disease, the mechanism of LCT intoxication, with emphasis on recent structural work and toxin subtyping analysis, and the genomic discovery and characterization of LCT homologues. We provide a comprehensive review of these topics and offer our perspective on emerging questions and future research directions for this enigmatic family of toxins.
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Cuna A, Morowitz MJ, Ahmed I, Umar S, Sampath V. Dynamics of the preterm gut microbiome in health and disease. Am J Physiol Gastrointest Liver Physiol 2021; 320:G411-G419. [PMID: 33439103 PMCID: PMC8238167 DOI: 10.1152/ajpgi.00399.2020] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Advances in metagenomics have allowed a detailed study of the gut microbiome, and its role in human health and disease. Infants born prematurely possess a fragile gut microbial ecosystem that is vulnerable to perturbation. Alterations in the developing gut microbiome in preterm infants are linked to life-threatening diseases such as necrotizing enterocolitis (NEC) and late-onset sepsis; and may impact future risk of asthma, atopy, obesity, and psychosocial disease. In this mini-review, we summarize recent literature on the origins and patterns of development of the preterm gut microbiome in the perinatal period. The host-microbiome-environmental factors that portend development of dysbiotic intestinal microbial patterns associated with NEC and sepsis are reviewed. Strategies to manipulate the microbiome and mitigate dysbiosis, including the use of probiotics and prebiotics will also be discussed. Finally, we explore the challenges and future directions of gut microbiome research in preterm infants.
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Affiliation(s)
- Alain Cuna
- 1Division of Neonatology, Children’s Mercy Kansas City, Kansas City, Missouri,2School of Medicine, University of Missouri Kansas City, Kansas City, Missouri
| | | | - Ishfaq Ahmed
- 4Department of Math, Science and Business Technology, Kansas City Kansas Community College, Kansas City, Kansas
| | - Shahid Umar
- 5Departments of Surgery and Cancer Biology, University of Kansas Medical Center, Kansas City, Kansas
| | - Venkatesh Sampath
- 1Division of Neonatology, Children’s Mercy Kansas City, Kansas City, Missouri,2School of Medicine, University of Missouri Kansas City, Kansas City, Missouri
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Patra AK, Kar I. Heat stress on microbiota composition, barrier integrity, and nutrient transport in gut, production performance, and its amelioration in farm animals. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2021; 63:211-247. [PMID: 33987600 PMCID: PMC8071753 DOI: 10.5187/jast.2021.e48] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 12/18/2022]
Abstract
Livestock species experience several stresses, particularly weaning,
transportation, overproduction, crowding, temperature, and diseases in their
life. Heat stress (HS) is one of the most stressors, which is encountered in
livestock production systems throughout the world, especially in the tropical
regions and is likely to be intensified due to global rise in environmental
temperature. The gut has emerged as one of the major target organs affected by
HS. The alpha- and beta-diversity of gut microbiota composition are altered due
to heat exposure to animals with greater colonization of pathogenic microbiota
groups. HS also induces several changes in the gut including damages of
microstructures of the mucosal epithelia, increased oxidative insults, reduced
immunity, and increased permeability of the gut to toxins and pathogens.
Vulnerability of the intestinal barrier integrity leads to invasion of
pathogenic microbes and translocation of antigens to the blood circulations,
which ultimately may cause systematic inflammations and immune responses.
Moreover, digestion of nutrients in the guts may be impaired due to reduced
enzymatic activity in the digesta, reduced surface areas for absorption and
injury to the mucosal structure and altered expressions of the nutrient
transport proteins and genes. The systematic hormonal changes due to HS along
with alterations in immune and inflammatory responses often cause reduced feed
intake and production performance in livestock and poultry. The altered
microbiome likely orchestrates to the hosts for various relevant biological
phenomena occurring in the body, but the exact mechanisms how functional
communications occur between the microbiota and HS responses are yet to be
elucidated. This review aims to discuss the effects of HS on microbiota
composition, mucosal structure, oxidant-antioxidant balance mechanism, immunity,
and barrier integrity in the gut, and production performance of farm animals
along with the dietary ameliorations of HS. Also, this review attempts to
explain the mechanisms how these biological responses are affected by HS.
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Affiliation(s)
- Amlan Kumar Patra
- Department of Animal Nutrition, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal 700037, India
| | - Indrajit Kar
- Department of Avian Sciences, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal 700037, India
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Moschino L, Duci M, Fascetti Leon F, Bonadies L, Priante E, Baraldi E, Verlato G. Optimizing Nutritional Strategies to Prevent Necrotizing Enterocolitis and Growth Failure after Bowel Resection. Nutrients 2021; 13:nu13020340. [PMID: 33498880 PMCID: PMC7910892 DOI: 10.3390/nu13020340] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 02/07/2023] Open
Abstract
Necrotizing enterocolitis (NEC), the first cause of short bowel syndrome (SBS) in the neonate, is a serious neonatal gastrointestinal disease with an incidence of up to 11% in preterm newborns less than 1500 g of birth weight. The rate of severe NEC requiring surgery remains high, and it is estimated between 20–50%. Newborns who develop SBS need prolonged parenteral nutrition (PN), experience nutrient deficiency, failure to thrive and are at risk of neurodevelopmental impairment. Prevention of NEC is therefore mandatory to avoid SBS and its associated morbidities. In this regard, nutritional practices seem to play a key role in early life. Individualized medical and surgical therapies, as well as intestinal rehabilitation programs, are fundamental in the achievement of enteral autonomy in infants with acquired SBS. In this descriptive review, we describe the most recent evidence on nutritional practices to prevent NEC, the available tools to early detect it, the surgical management to limit bowel resection and the best nutrition to sustain growth and intestinal function.
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MESH Headings
- Enterocolitis, Necrotizing/complications
- Enterocolitis, Necrotizing/diagnosis
- Enterocolitis, Necrotizing/prevention & control
- Enterocolitis, Necrotizing/surgery
- Failure to Thrive/prevention & control
- Humans
- Infant
- Infant Nutritional Physiological Phenomena
- Infant, Newborn
- Infant, Premature
- Infant, Premature, Diseases/diagnosis
- Infant, Premature, Diseases/prevention & control
- Infant, Premature, Diseases/surgery
- Intestines/surgery
- Short Bowel Syndrome/etiology
- Short Bowel Syndrome/prevention & control
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Affiliation(s)
- Laura Moschino
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, University Hospital of Padova, 35128 Padova, Italy; (L.M.); (L.B.); (E.P.); (E.B.)
| | - Miriam Duci
- Pediatric Surgery Unit, Department of Women’s and Children’s Health, University Hospital of Padova, 35128 Padova, Italy; (M.D.); (F.F.L.)
| | - Francesco Fascetti Leon
- Pediatric Surgery Unit, Department of Women’s and Children’s Health, University Hospital of Padova, 35128 Padova, Italy; (M.D.); (F.F.L.)
| | - Luca Bonadies
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, University Hospital of Padova, 35128 Padova, Italy; (L.M.); (L.B.); (E.P.); (E.B.)
| | - Elena Priante
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, University Hospital of Padova, 35128 Padova, Italy; (L.M.); (L.B.); (E.P.); (E.B.)
| | - Eugenio Baraldi
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, University Hospital of Padova, 35128 Padova, Italy; (L.M.); (L.B.); (E.P.); (E.B.)
| | - Giovanna Verlato
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, University Hospital of Padova, 35128 Padova, Italy; (L.M.); (L.B.); (E.P.); (E.B.)
- Correspondence: ; Tel.: +39-0498211428
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Klerk DH, Plösch T, Verkaik-Schakel RN, Hulscher JBF, Kooi EMW, Bos AF. DNA Methylation of TLR4, VEGFA, and DEFA5 Is Associated With Necrotizing Enterocolitis in Preterm Infants. Front Pediatr 2021; 9:630817. [PMID: 33748044 PMCID: PMC7969816 DOI: 10.3389/fped.2021.630817] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 02/11/2021] [Indexed: 11/29/2022] Open
Abstract
Background: Epigenetic changes, such as DNA methylation, may contribute to an increased susceptibility for developing necrotizing enterocolitis (NEC) in preterm infants. We assessed DNA methylation in five NEC-associated genes, selected from literature: EPO, VEGFA, ENOS, DEFA5, and TLR4 in infants with NEC and controls. Methods: Observational cohort study including 24 preterm infants who developed NEC (≥Bell Stage IIA) and 45 matched controls. DNA was isolated from stool samples and methylation measured using pyrosequencing. We investigated differences in methylation prior to NEC compared with controls. Next, in NEC infants, we investigated methylation patterns long before, a short time before NEC onset, and after NEC. Results: Prior to NEC, only TLR4 CpG 2 methylation was increased in NEC infants (median = 75.4%, IQR = 71.3-83.8%) versus controls (median = 69.0%, IQR = 64.5-77.4%, p = 0.025). In NEC infants, VEGFA CpG 3 methylation was 0.8% long before NEC, increasing to 1.8% a short time before NEC and 2.0% after NEC (p = 0.011; p = 0.021, respectively). A similar pattern was found in DEFA5 CpG 1, which increased from 75.4 to 81.4% and remained 85.3% (p = 0.027; p = 0.019, respectively). These changes were not present for EPO, ENOS, and TLR4. Conclusion: Epigenetic changes of TLR4, VEGFA, and DEFA5 are present in NEC infants and can differ in relation to the time of NEC onset. Differences in DNA methylation of TLR4, VEGFA, and DEFA5 may influence gene expression and increase the risk for developing NEC. This study also demonstrates the use of human DNA extraction from stool samples as a novel non-invasive method for exploring the bowel of preterm infants and which can also be used for necrotizing enterocolitis patients.
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Affiliation(s)
- Daphne H Klerk
- Division of Neonatology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Torsten Plösch
- Department of Obstetrics and Gynecology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Rikst Nynke Verkaik-Schakel
- Department of Obstetrics and Gynecology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Jan B F Hulscher
- Division of Pediatric Surgery, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Elisabeth M W Kooi
- Division of Neonatology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Arend F Bos
- Division of Neonatology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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Fu X, Li S, Jiang Y, Hu X, Wu H. Necrotizing Enterocolitis and Intestinal Microbiota: The Timing of Disease and Combined Effects of Multiple Species. Front Pediatr 2021; 9:657349. [PMID: 34012949 PMCID: PMC8126687 DOI: 10.3389/fped.2021.657349] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 03/22/2021] [Indexed: 12/03/2022] Open
Abstract
Background: The purpose of this study was to investigate the relationship between intestinal microbiota and necrotizing enterocolitis (NEC). Methods: 16S rRNA gene sequencing was used to compare the microbial composition of feces. The first sample was collected within 48 h after birth, then once per week until the NEC diagnosis, and finally 1-2 weeks after treatment or 28 days after birth. Results: The alpha diversity of the microbiota in the NEC group was higher than that in the control group. Beta diversity analysis showed that the control group had a higher similarity at the onset of NEC, while the NEC group was distributed in subgroups. Linear discriminant analysis effect size and taxonomic composition analyses indicated that the abundance of Bacteroides and Actinobacteria in NEC infants at birth was much higher than that in the control group, and this trend continued until NEC occurred. At this time, Rhizobiales, Dysgonomonas, Ochrobactrum, Ralstonia, Pelomonas, Acinetobacter, etc., were also more abundant in NEC infants. The upregulated different metabolic pathways in the NEC group were mainly concentrated on degradation/utilization/assimilation, biosynthesis, and generation of precursor metabolites and energy. Conclusions: 1. The microbial community differs according to the time of NEC diagnosis (bounded by 20 days). 2. No single microorganism is related to NEC, and the combined effect of multiple species is of great significance in the occurrence of NEC. Premature infants are easily affected by bacteria living in the environment, and compared with ordinary premature infants, NEC infants have a higher abundance of waterborne bacteria. Therefore, attention should be paid to the contamination of water sources and various ventilator pipelines for premature infants hospitalized in the neonatal intensive care unit. 3. An in-depth study of the mode of microbial colonization in premature infants combined with the different functions of various metabolic pathways involved in different microorganisms may be able to identify the cause of NEC.
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Affiliation(s)
- Xin Fu
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Siwen Li
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Yanfang Jiang
- Gene Diagnosis Center, The First Hospital of Jilin University, Changchun, China
| | - Xintong Hu
- Gene Diagnosis Center, The First Hospital of Jilin University, Changchun, China
| | - Hui Wu
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
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Davis JA, Baumgartel K, Morowitz MJ, Giangrasso V, Demirci JR. The Role of Human Milk in Decreasing Necrotizing Enterocolitis Through Modulation of the Infant Gut Microbiome: A Scoping Review. J Hum Lact 2020; 36:647-656. [PMID: 32845798 DOI: 10.1177/0890334420950260] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Necrotizing enterocolitis is associated with a high incidence of morbidity and mortality in premature infants. Human milk minimizes necrotizing enterocolitis risk, although the mechanism of protection is not thoroughly understood. Increasingly, dysbiosis of the infant gut microbiome, which is affected by infant diet, is hypothesized to play a role in necrotizing enterocolitis pathophysiology. RESEARCH AIM The aim of this scoping review was to summarize the state of the science regarding the hypothesis that the gut microbiome composition is a mediator of the relationship between human milk and decreased incidence of necrotizing enterocolitis within a sample of human infants. METHODS Electronic databases and reference lists were searched for peer-reviewed primary research articles addressing the link between human milk, gut microbiome composition, and subsequent incidence of necrotizing enterocolitis among human infants. RESULTS A total of four studies met criteria for inclusion in this review. Of these, evidence supporting the link between human milk, gut microbiome composition, and necrotizing enterocolitis was found in two (50%) studies. CONCLUSION Some evidence linking all three variables is provided in this review. Given the small number of available studies, and the limitations of those studies, more research is urgently needed to thoroughly understand the protection against necrotizing enterocolitis gained through the provision of human milk.
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Affiliation(s)
- Jessica A Davis
- 6614 University of Pittsburgh School of Nursing, Pittsburgh, USA
| | | | - Michael J Morowitz
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | - Vivianna Giangrasso
- Department of Health Promotion & Development, University of Pittsburgh School of Nursing, Pittsburgh, USA
| | - Jill R Demirci
- Department of Health Promotion & Development, University of Pittsburgh School of Nursing, Pittsburgh, USA
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Molecular Characterization of Clostridium perfringens Strains Isolated in Italy. Toxins (Basel) 2020; 12:toxins12100650. [PMID: 33050097 PMCID: PMC7600699 DOI: 10.3390/toxins12100650] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 09/29/2020] [Accepted: 10/06/2020] [Indexed: 12/14/2022] Open
Abstract
Clostridium (C.) perfringens is the causative agent of several diseases and enteric infections in animals and humans. The pathogenicity of the bacterium is largely mediated by the production of a wide range of toxins. Individual C. perfringens strains produce only subsets of this toxin repertoire, which permits the classification in seven toxinotypes (A–G). In addition, a variety of minor toxins further characterizes the single strains. The aim of this work was to evaluate, using Polymerase Chain Reaction (PCR) assays, the diversity of 632 C. perfringens strains isolated in Italy over 15 years. The genotyped strains were analyzed to determine the presence of major and minor toxins (cpe, consensus, and atypical cpb2), their geographical origins, and the source of isolation (animal species or food). Our study shows that toxinotype A had the greatest representation (93%) and correlated mainly with consensus cpb2 in a variety of animal species, as well as with atypical cpb2 in the five food samples. Type D, associated with cpe and atypical cpb2 minor toxins, was identified in 3% of the cases, and type F was identified in 2.5%. Seven type C isolates (1.1%) were detected in cattle, whereas the only type B atypical cpb2 isolated in Italy was detected in a goat, and one type E cpe+atypical cpb2 was detected in a sheep. Type G was not detected.
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