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Halkjær SI, Refslund Danielsen M, de Knegt VE, Andersen LO, Stensvold CR, Nielsen HV, Mirsepasi-Lauridsen HC, Krogfelt KA, Cortes D, Petersen AM. Multi-strain probiotics during pregnancy in women with obesity influence infant gut microbiome development: results from a randomized, double-blind placebo-controlled study. Gut Microbes 2024; 16:2337968. [PMID: 38591920 PMCID: PMC11005804 DOI: 10.1080/19490976.2024.2337968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/10/2024] Open
Abstract
Probiotics have been described to influence host health and prevent the risk of obesity by gut microbiome (GM) modulation. In a randomized double-blinded placebo-controlled feasibility study, we investigated whether Vivomixx® multi-strain probiotics administered to 50 women with obesity during pregnancy altered the GM composition and perinatal health outcomes of their infants up to 9 months after birth. The mothers and infants were followed up with four visits after birth: at 3 d, and at 3, 6, and 9 months after delivery. The infants were monitored by anthropometric measurements, fecal sample analysis, and questionnaires regarding health and diet.The study setup after birth was feasible, and the women and infants were willing to participate in additional study visits and collection of fecal samples during the 9-month follow-up. In total, 47 newborns were included for microbiome analysis.Maternal prenatal Vivomixx® administration did not alter infant GM diversity nor differential abundance, and the probiotic strains were not vertically transferred. However, the infant GM exhibited a decreased prevalence of the obesity-associated genera, Collinsella, in the probiotic group and of the metabolic health-associated Akkermansia in the placebo group, indicating that indirect community-scale effects of Vivomixx® on the GM of the mothers could be transferred to the infant.Moreover, 3 d after birth, the GM of the infant was influenced by mode of delivery and antibiotics administered during birth. Vaginally delivered infants had increased diversity and relative abundance of the metabolic health-associated Bifidobacterium and Bacteroides while having a decreased relative abundance of Enterococcus compared with infants delivered by cesarean section. Maternal antibiotic administration during birth resulted in a decreased relative abundance of Bifidobacteriumin the GM of the infants. In conclusion, this study observed potential effects on obesity-associated infant GM after maternal probiotic supplementation.
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Affiliation(s)
- Sofie Ingdam Halkjær
- Gastrounit,Medical Division, Copenhagen University Hospital Amager and Hvidovre, Hvidovre, Denmark
| | | | - Victoria E. de Knegt
- Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Amager and Hvidovre, Hvidovre, Denmark
| | - Lee O’Brien Andersen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | | | - Henrik Vedel Nielsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | - Hengameh Chloé Mirsepasi-Lauridsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
- Department of Science and Environment, Roskilde University, Roskilde, Denmark
| | - Karen Angeliki Krogfelt
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
- Department of Science and Environment, Roskilde University, Roskilde, Denmark
| | - Dina Cortes
- Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Amager and Hvidovre, Hvidovre, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Andreas Munk Petersen
- Gastrounit,Medical Division, Copenhagen University Hospital Amager and Hvidovre, Hvidovre, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Microbiology, Copenhagen University Hospital Amager and Hvidovre, Copenhagen, Denmark
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Svensson CK, Cold F, Ribberholt I, Zangenberg M, Mirsepasi-Lauridsen HC, Petersen AM, Helms M. The Efficacy of Faecal Microbiota Transplant and Rectal Bacteriotherapy in Patients with Recurrent Clostridioides difficile Infection: A Retrospective Cohort Study. Cells 2022; 11:cells11203272. [PMID: 36291139 PMCID: PMC9600246 DOI: 10.3390/cells11203272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/29/2022] [Accepted: 10/12/2022] [Indexed: 11/18/2022] Open
Abstract
The most effective treatment for recurrent Clostridioides difficile infection (CDI) is faecal microbiota transplantation (FMT); however, the optimal route of administration is thus far unknown. This retrospective cohort study of 343 patients sought to evaluate the efficacy of treatment with FMT capsules, FMT enema, and rectal bacteriotherapy (RBT) during a five-year period. The primary endpoint was clinical resolution from CDI after eight weeks, and secondary endpoints were time to recurrence and death during the follow-up period. The proportion of patients with clinical resolution was 79.9% in the FMT capsule group, 53.3% in the FMT enema group, and 61.8% in the RBT group, corresponding to an adjusted odds ratio of 3.79 (CI: 1.82 to 8.26) in the FMT capsule group compared with FMT enema, and 2.92 (CI: 1.49 to 6.03) compared with RBT. The hazards ratio for recurrence within the first 12 months of follow-up was 0.24 (CI: 0.06 to 0.89) in the FMT capsule group compared with FMT enema, and 0.26 (CI: 0.08 to 0.91) compared with RBT. There was no difference in mortality. In conclusion, FMT capsules were more effective than both FMT enema and RBT as treatment of recurrent CDI and reduced the risk of further recurrences.
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Affiliation(s)
- Camilla Kara Svensson
- Department of Infectious Diseases, Copenhagen University Hospital Hvidovre, 2650 Hvidovre, Denmark
| | - Frederik Cold
- Gastro Unit, Medical Division, Copenhagen University Hospital Hvidovre, 2650 Hvidovre, Denmark
- Department of Plant and Environmental Sciences, Copenhagen University, 1871 Copenhagen, Denmark
| | - Iben Ribberholt
- Department of Infectious Diseases, Copenhagen University Hospital Hvidovre, 2650 Hvidovre, Denmark
| | - Mike Zangenberg
- Department of Infectious Diseases, Copenhagen University Hospital Hvidovre, 2650 Hvidovre, Denmark
| | | | - Andreas Munk Petersen
- Gastro Unit, Medical Division, Copenhagen University Hospital Hvidovre, 2650 Hvidovre, Denmark
- Department of Clinical Microbiology, Copenhagen University Hospital Hvidovre, 2650 Hvidovre, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, Copenhagen University, 2100 Copenhagen, Denmark
| | - Morten Helms
- Department of Infectious Diseases, Copenhagen University Hospital Hvidovre, 2650 Hvidovre, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, Copenhagen University, 2100 Copenhagen, Denmark
- Correspondence:
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Mirsepasi-Lauridsen HC, Vranckx K, Nielsen HV, Andersen LO, Archampong T, Krogfelt KA, Petersen AM. Substantial Intestinal Microbiota Differences Between Patients With Ulcerative Colitis From Ghana and Denmark. Front Cell Infect Microbiol 2022; 12:832500. [PMID: 35372093 PMCID: PMC8965593 DOI: 10.3389/fcimb.2022.832500] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/25/2022] [Indexed: 12/11/2022] Open
Abstract
Background Ulcerative colitis (UC) is a relapsing nontransmural inflammatory disease that is restricted to the colon and is characterized by flare-ups of bloody diarrhea. In this study, we aimed to investigate intestinal bacterial diversity in healthy controls and patients with UC with and without active disease, from Ghana and Denmark. Methods The study included 18 UC patients (9 with active and 9 with inactive disease) and 18 healthy controls from Ghana. In addition 16 UC patients from Denmark (8 UC with active and 8 UC with inactive disease) and 19 healthy controls from Denmark. Microbiota diversity analysis relied on sequencing of ribosomal small subunit genes. Purified genomic DNA was submitted to PCR using a primer set targeting prokaryotes and eukaryotes. The purified DNA was sequenced on the Illumina MiSeq system in a 2 × 250 bp set up (Illumina, San Diego, CA, USA). Blinded analysis of the taxonomy table was performed using BioNumerics-7.5 (Applied Maths NV, Sint-Martens-Latem, Belgium). Results When analyzing the taxonomy data for prokaryotes, cluster and principal component analysis shows Danish healthy controls clustered together, but separate from healthy controls from Ghana, which also clustered together. The Shannon diversity index (SDI) for prokaryotes shows significant differences between Danish healthy controls and patients in comparison with the corresponding groups from Ghana (p = 0.0056). Significant increased abundance of Escherichia coli was detected in healthy controls from Ghana in comparison with healthy controls from Denmark. The SDI of the prokaryotes ranges between 0 and 3.1 in the Ghana study groups, while in the Danish study groups it ranges between 1.4 and 3.2, the difference is however not significant (p = 0.138). Our data show a significant increased abundance of eukaryotes species in the healthy control group from Ghana and Denmark in comparison with patient groups from Ghana and Denmark. Conclusion Overall, healthy controls and patients with UC from Denmark have increased diversity of prokaryotes. Healthy controls from Denmark and Ghana have increased abundance of eukaryotes in comparison with UC patient groups from Denmark and Ghana.
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Affiliation(s)
- Hengameh Chloé Mirsepasi-Lauridsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
- Department of Science and Environment, Unit of Molecular and Medical Biology, Roskilde University, Roskilde, Denmark
- *Correspondence: Hengameh Chloé Mirsepasi-Lauridsen,
| | | | - Henrik Vedel Nielsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | - Lee O’Brien Andersen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | - Timothy Archampong
- Department of Medicine and Therapeutics, University of Ghana Medical School, Korle-Bu, Accra, Ghana
| | - Karen Angeliki Krogfelt
- Department of Science and Environment, Unit of Molecular and Medical Biology, Roskilde University, Roskilde, Denmark
- Department of Virus and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, Denmark
| | - Andreas Munk Petersen
- Department of Gastroenterology, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
- Department of Clinical Microbiology, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
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Yang H, Mirsepasi-Lauridsen HC, Struve C, Allaire JM, Sivignon A, Vogl W, Bosman ES, Ma C, Fotovati A, Reid GS, Li X, Petersen AM, Gouin SG, Barnich N, Jacobson K, Yu HB, Krogfelt KA, Vallance BA. Ulcerative Colitis-associated E. coli pathobionts potentiate colitis in susceptible hosts. Gut Microbes 2020; 12:1847976. [PMID: 33258388 PMCID: PMC7781664 DOI: 10.1080/19490976.2020.1847976] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Ulcerative colitis (UC) is a chronic inflammatory condition linked to intestinal microbial dysbiosis, including the expansion of E. coli strains related to extra-intestinal pathogenic E. coli. These "pathobionts" exhibit pathogenic properties, but their potential to promote UC is unclear due to the lack of relevant animal models. Here, we established a mouse model using a representative UC pathobiont strain (p19A), and mice lacking single immunoglobulin and toll-interleukin 1 receptor domain (SIGIRR), a deficiency increasing susceptibility to gut infections. Strain p19A was found to adhere to the cecal mucosa of Sigirr -/- mice, causing modest inflammation. Moreover, it dramatically worsened dextran sodium sulfate-induced colitis. This potentiation was attenuated using a p19A strain lacking α-hemolysin genes, or when we targeted pathobiont adherence using a p19A strain lacking the adhesin FimH, or following treatment with FimH antagonists. Thus, UC pathobionts adhere to the intestinal mucosa, and worsen the course of colitis in susceptible hosts.
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Affiliation(s)
- Hyungjun Yang
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada,CONTACT Hong Bing Yu Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada; Karen
| | - Hengameh Chloé Mirsepasi-Lauridsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institute, Copenhagen, Denmark,Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Carsten Struve
- Department of Bacteria, Parasites and Fungi, Statens Serum Institute, Copenhagen, Denmark
| | - Joannie M. Allaire
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Adeline Sivignon
- Université Clermont Auvergne, Laboratoire Microbes Intestin Inflammation Et Susceptibilité De l’Hôte (M2ish), Inserm U1071, M2iSH, F-63000, Clermont-Ferrand, France,INRA, Unité Sous Contrat 2018, Clermont-Ferrand, France
| | - Wayne Vogl
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Else S. Bosman
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Caixia Ma
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Abbas Fotovati
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Gregor S. Reid
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Xiaoxia Li
- Department of Immunology, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Andreas Munk Petersen
- Department of Gastroenterology, Copenhagen University Hospital, Hvidovre, Denmark,Department of Clinical Microbiology, Copenhagen University Hospital, Hvidovre, Denmark
| | - Sébastien G. Gouin
- Université De Nantes, Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation (CEISAM), UMR CNRS 6230, UFR Des Sciences Et Des Techniques, Nantes, France
| | - Nicolas Barnich
- Université Clermont Auvergne, Laboratoire Microbes Intestin Inflammation Et Susceptibilité De l’Hôte (M2ish), Inserm U1071, M2iSH, F-63000, Clermont-Ferrand, France,INRA, Unité Sous Contrat 2018, Clermont-Ferrand, France
| | - Kevan Jacobson
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Hong Bing Yu
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada,CONTACT Hong Bing Yu Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada; Karen
| | - Karen Angeliki Krogfelt
- Department of Bacteria, Parasites and Fungi, Statens Serum Institute, Copenhagen, Denmark,Angeliki Krogfelt
| | - Bruce A. Vallance
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada,Lead Contact,Bruce A. Vallance
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Halkjær SI, de Knegt VE, Lo B, Nilas L, Cortes D, Pedersen AE, Mirsepasi-Lauridsen HC, Andersen LO, Nielsen HV, Stensvold CR, Johannesen TB, Kallemose T, Krogfelt KA, Petersen AM. Multistrain Probiotic Increases the Gut Microbiota Diversity in Obese Pregnant Women: Results from a Randomized, Double-Blind Placebo-Controlled Study. Curr Dev Nutr 2020; 4:nzaa095. [PMID: 32617453 PMCID: PMC7319727 DOI: 10.1093/cdn/nzaa095] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 04/21/2020] [Accepted: 05/21/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Maternal obesity is associated with adverse pregnancy outcomes. Probiotic supplementation during pregnancy may have positive effects on blood glucose, gestational weight gain (GWG), and the risk of gestational diabetes mellitus [GDM and glycated hemoglobin (HbA1c)]. OBJECTIVES This feasibility study involved a daily probiotic intervention in obese pregnant women from the early second trimester until delivery. The primary aim was to investigate the effect on GWG and maternal glucose homeostasis (GDM and HbA1c). Secondary aims were the effect on infant birth weight, maternal gut microbiota, and other pregnancy outcomes. METHODS We carried out a randomized double-blinded placebo-controlled study in 50 obese pregnant women. Participants were randomly allocated (1:1) to multistrain probiotic (4 capsules of Vivomixx®; total of 450 billion CFU/d) or placebo at 14-20 weeks of gestation until delivery. Participants were followed with 2 predelivery visits at gestational week 27-30 and 36-37 and with 1 postdelivery visit. All visits included blood and fecal sampling. An oral-glucose-tolerance test was performed at inclusion and gestational week 27-30. RESULTS Forty-nine participants completed the study. Thirty-eight participants took >80% of the capsules (n = 21), placebo (n = 17). There was no significant difference in GWG, GDM, HbA1c concentrations, and infant birth weight between groups. Fecal microbiota analyses showed an overall increase in α-diversity over time in the probiotic group only (P = 0.016). CONCLUSIONS Administration of probiotics during pregnancy is feasible in obese women and the women were willing to participate in additional study visits and collection of fecal samples during pregnancy. Multistrain probiotic can modulate the gut microbiota in obese women during pregnancy. A larger study population is needed to uncover pregnancy effects after probiotic supplementation. This trial was registered at clincaltrials.gov as NCT02508844.
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Affiliation(s)
- Sofie Ingdam Halkjær
- Gastrounit, Medical Division, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
| | | | - Bobby Lo
- Gastrounit, Medical Division, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
| | - Lisbeth Nilas
- Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
| | - Dina Cortes
- Department of Pediatrics, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anders Elm Pedersen
- Department of Dentistry, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Lee O'Brien Andersen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | - Henrik Vedel Nielsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | | | - Thor Bech Johannesen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | - Thomas Kallemose
- Clinical Research Centre, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
| | - Karen Angeliki Krogfelt
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
- Department of Science and Environment, Roskilde University, Roskilde, Denmark
| | - Andreas Munk Petersen
- Gastrounit, Medical Division, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Microbiology, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
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Petersen AM, Mirsepasi-Lauridsen HC, Vester-Andersen MK, Sørensen N, Krogfelt KA, Bendtsen F. High Abundance of Proteobacteria in Ileo-Anal Pouch Anastomosis and Increased Abundance of Fusobacteria Associated with Increased Pouch Inflammation. Antibiotics (Basel) 2020; 9:antibiotics9050237. [PMID: 32397087 PMCID: PMC7277091 DOI: 10.3390/antibiotics9050237] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/03/2020] [Accepted: 05/06/2020] [Indexed: 12/20/2022] Open
Abstract
Low diversity intestinal dysbiosis has been associated with inflammatory bowel disease, including patients with ulcerative colitis with an ileo-anal pouch anastomosis. Furthermore, specific Escherichia coli phylogroups have been linked to inflammatory bowel disease. Our aim was to characterize the differences among microbiota and E. coli phylogroups in active and inactive pouchitis. Disease activity was assessed using the modified pouch disease activity index and by fecal calprotectin. Microbiota diversity was assessed by 16S rDNA MiSeq sequencing. E. coli phylogroup was determined after triplex PCR. Twenty patients with ulcerative colitis with an ileo-anal pouch anastomosis were included, 10 of whom had active pouchitis. Ileo-anal pouch anastomosis patients had an increased abundance of Proteobacteria colonization compared to patients with ulcerative colitis or Crohn's disease and healthy controls, p = 1.4·10-5. No differences in E. coli phylogroup colonization could be determined between cases of active and inactive disease. No significant link was found between α-diversity and pouch inflammation. However, higher levels of Fusobacteria colonization were found in patients with a pouch with a fecal calprotectin level above 500, p = 0.02. In conclusion, patients with a pouch had an increased Proteobacteria abundance, but only Fusobacteria abundance was linked to inflammation.
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Affiliation(s)
- Andreas Munk Petersen
- Gastrounit, Medical Section, Amager-Hvidovre University Hospital, 2650 Copenhagen, Denmark; (M.K.V.-A.); (F.B.)
- Department of Clinical Microbiology, Amager-Hvidovre University Hospital, 2650 Copenhagen, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark
- Correspondence: ; Tel.: +45-38-62-59-60
| | | | - Marianne K. Vester-Andersen
- Gastrounit, Medical Section, Amager-Hvidovre University Hospital, 2650 Copenhagen, Denmark; (M.K.V.-A.); (F.B.)
- Department of Internal Medicine, Zealand University Hospital, 4600 Køge, Denmark
| | - Nikolaj Sørensen
- Clinical-Microbiomics, Ole Maaløes Vej 3, Clinical Microbiomics, 2200 Copenhagen, Denmark;
| | - Karen Angeliki Krogfelt
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, 2300 Copenhagen, Denmark; (H.C.M.-L.); (K.A.K.)
- Department of Virus and Microbiological Special Diagnostics, Statens Serum Institut, 2300 Copenhagen, Denmark
- Department of Science and Environment, Roskilde University, 4000 Roskilde, Denmark
| | - Flemming Bendtsen
- Gastrounit, Medical Section, Amager-Hvidovre University Hospital, 2650 Copenhagen, Denmark; (M.K.V.-A.); (F.B.)
- Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark
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Vester-Andersen MK, Mirsepasi-Lauridsen HC, Prosberg MV, Mortensen CO, Träger C, Skovsen K, Thorkilgaard T, Nøjgaard C, Vind I, Krogfelt KA, Sørensen N, Bendtsen F, Petersen AM. Increased abundance of proteobacteria in aggressive Crohn's disease seven years after diagnosis. Sci Rep 2019; 9:13473. [PMID: 31530835 PMCID: PMC6748953 DOI: 10.1038/s41598-019-49833-3] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 08/23/2019] [Indexed: 02/07/2023] Open
Abstract
Intestinal dysbiosis in inflammatory bowel disease (IBD) patients depend on disease activity. We aimed to characterize the microbiota after 7 years of follow-up in an unselected cohort of IBD patients according to disease activity and disease severity. Fifty eight Crohn’s disease (CD) and 82 ulcerative colitis (UC) patients were included. Disease activity was assessed by the Harvey-Bradshaw Index for CD and Simple Clinical Colitis Activity Index for UC. Microbiota diversity was assessed by 16S rDNA MiSeq sequencing. In UC patients with active disease and in CD patients with aggressive disease the richness (number of OTUs, p = 0.018 and p = 0.013, respectively) and diversity (Shannons index, p = 0.017 and p = 0.023, respectively) were significantly decreased. In the active UC group there was a significant decrease in abundance of the phylum Firmicutes (p = 0.018). The same was found in CD patients with aggressive disease (p = 0.05) while the abundance of Proteobacteria phylum showed a significant increase (p = 0.03) in CD patients. We found a change in the microbial abundance in UC patients with active disease and in CD patients with aggressive disease. These results suggest that dysbiosis of the gut in IBD patients is not only related to current activity but also to the course of the disease.
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Affiliation(s)
- M K Vester-Andersen
- Gastrounit, Hvidovre Hospital, University of Copenhagen, København, Denmark. .,Department of Internal medicine, Zealand University Hospital, Køge, Denmark.
| | | | - M V Prosberg
- Gastrounit, Hvidovre Hospital, University of Copenhagen, København, Denmark
| | - C O Mortensen
- Department of Gastroenterology, Herlev and Gentofte Hospital, University of Copenhagen, København, Denmark
| | - C Träger
- Department of Gastroenterology, Herlev and Gentofte Hospital, University of Copenhagen, København, Denmark
| | - K Skovsen
- Department of Gastroenterology, Herlev and Gentofte Hospital, University of Copenhagen, København, Denmark
| | - T Thorkilgaard
- Department of Gastroenterology, Herlev and Gentofte Hospital, University of Copenhagen, København, Denmark
| | - C Nøjgaard
- Gastrounit, Hvidovre Hospital, University of Copenhagen, København, Denmark
| | - I Vind
- Gastrounit, Hvidovre Hospital, University of Copenhagen, København, Denmark
| | - K A Krogfelt
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark.,Department of Virus and Microbial Diagnostics, Statens Serum Institut, Copenhagen, Denmark
| | - N Sørensen
- Clinical-Microbiomics, Ole Maaløesvej 3, Copenhagen, Denmark
| | - F Bendtsen
- Gastrounit, Hvidovre Hospital, University of Copenhagen, København, Denmark
| | - A M Petersen
- Gastrounit, Hvidovre Hospital, University of Copenhagen, København, Denmark.,Department of Clinical Microbiology, Hvidovre Hospital, University of Copenhagen, København, Denmark
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Yang H, Mirsepasi-Lauridsen HC, Struve C, Allaire JM, Bosman E, Sivignon A, Vogl W, Ma C, Reid G, Li X, Petersen AM, Jacobson K, Gouin S, Barnich N, Yu H, Krogfelt KA, Vallance BA. Ulcerative Colitis-associated E. coli pathobionts potentiate colitis in susceptible hosts. The Journal of Immunology 2019. [DOI: 10.4049/jimmunol.202.supp.192.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Ulcerative colitis (UC) is chronic inflammatory condition linked to intestinal microbial dysbiosis, including the expansion of E. coli strains related to extra-intestinal E. coli. These “pathobionts” exhibit pathogenic properties, but their potential to promote UC is unclear due to the lack of suitable animal models. Here, we established a mouse model using a representative UC pathobiont strain (p19A), and mice lacking single immunoglobulin and toll-interleukin 1 receptor domain (SIGIRR), a deficiency increasing susceptibility to gut infections. p19A was found to adhere to the cecal mucosa of Sigirr−/− mice, causing modest inflammation. Moreover, it dramatically worsened DSS induced colitis, in concert with adherence to, and penetration of the inflamed mucosa. This pathogenicity was lost in a p19A strain lacking the adhesin FimH; following treatment with FimH antagonists, or was attenuated when using a p19A strain lacking a-hemolysin genes. Thus UC pathobionts can worsen the course of colitis in susceptible hosts.
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Abstract
Gut bacteria play a key role in initiating and maintaining the inflammatory process in the gut tissues of inflammatory bowel disease (IBD) patients, by supplying antigens or other stimulatory factors that trigger immune cell activation. Changes in the composition of the intestinal microbiota in IBD patients compared to that in healthy controls and a reduced diversity of intestinal microbial species are linked to the pathogenesis of IBD. Adherent invasive Escherichia coli (AIEC) has been linked to Crohn's disease (CD) patients, while diffusely adherent E. coli (DAEC) has been associated with ulcerative colitis (UC). Bacteriological analysis of intestinal biopsy specimens and fecal samples from IBD patients shows an increased number of E. coli strains belonging to the B2 phylogenetic group, which are typically known as extraintestinal pathogenic E. coli (ExPEC). Results from studies of both cell cultures and animal models reveal pathogenic features of these E. coli pathobionts, which may link them to IBD pathogenesis. This suggests that IBD-associated E. coli strains play a facilitative role during IBD flares. In this review, we explain IBD-associated E. coli and its role in IBD pathogenesis.
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Affiliation(s)
| | - Bruce Andrew Vallance
- Division of Gastroenterology, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Karen Angeliki Krogfelt
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
- Department of Viral and Microbiological Diagnostics, Statens Serum Institut, Copenhagen, Denmark
| | - Andreas Munk Petersen
- Department of Gastroenterology, Hvidovre University Hospital, Copenhagen, Denmark
- Department of Clinical Microbiology, Hvidovre University Hospital, Copenhagen, Denmark
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10
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Mirsepasi-Lauridsen HC, Vrankx K, Engberg J, Friis-Møller A, Brynskov J, Nordgaard-Lassen I, Petersen AM, Krogfelt KA. Disease-Specific Enteric Microbiome Dysbiosis in Inflammatory Bowel Disease. Front Med (Lausanne) 2018; 5:304. [PMID: 30525037 PMCID: PMC6256240 DOI: 10.3389/fmed.2018.00304] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 10/15/2018] [Indexed: 12/16/2022] Open
Abstract
Inflammatory Bowel disease (IBD) is traditionally divided into Crohn's disease (CD) and ulcerative colitis (UC). UC is a relapsing non-transmural inflammatory disease that is restricted to the colon and is characterized by flare-ups of bloody diarrhea. CD is a chronic, segmental localized granulomatous disease that can affect any part of the entire gastrointestinal tract. Ileo-anal pouch is a procedure restoring functionality of the rectum after a colectomy. IBD is a multifactorial disease and flares of IBD are probably triggered by changes in the intestinal microbiota followed by an abnormal immune response. In this study, we aim to analyze the intestinal bacterial diversity in IBD patients during various stages of disease compared with healthy controls. Permission for human experiments and recruitment of participants was obtained from the Ethic Committee for Copenhagen County hospitals (Permission no. KA-03019, Permission no. KA-20060159). Stools from 26 healthy controls, 42 CD, 38 UC and 18 pouch patients were collected. Stool DNA extraction was performed using Qiagen, DNA mini stool kit Denmark. DGGE-PCR amplifying the V2-V3 region of 16S-rDNA gene of the bacteria was amplified by universal primers HDA1 and HDA2. Analysis of DGGE was performed blinded using BioNumerics version 7.5. After normalization, a DGGE gel band matching was performed. The similarities between profiles were calculated with a ranked Pearson correlation coefficient based on the band matching results using band intensities. Simpson's index of diversity and Pielou's species evenness were calculated. Based on the Shannon Diversity Index, UC patients had lower species diversity and bacterial evenness in comparison to healthy persons, p < 0.05. However, only CD and disease pouch patients had lower species diversity compared to those with inactive disease and healthy controls. Well-functioning pouch patients had decreased species evenness in comparison to diseased pouch patients and control group. During the active disease stage in CD and pouch, the patients have a low bacterial diversity in their gut when compared to the inactive stage. In UC patients, a generally low diversity was observed at all stages of the disease compared to healthy controls.
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Affiliation(s)
| | | | - Jørgen Engberg
- Department of Clinical Microbiology, Slagelse Hospital, Slagelse, Denmark
| | - Alice Friis-Møller
- Department of Clinical Microbiology, Hvidovre University Hospital, Hvidovre, Denmark
| | - Jørn Brynskov
- Department of Gastroenterology, Herlev University Hospital, Herlev, Denmark
| | | | - Andreas Munk Petersen
- Department of Clinical Microbiology, Hvidovre University Hospital, Hvidovre, Denmark.,Department of Gastroenterology, Hvidovre University Hospital, Hvidovre, Denmark
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11
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Yang H, Mirsepasi-Lauridsen HC, Bosman ES, Struve C, Yu H, Wu X, Ma C, Reid G, Li X, Petersen AM, Jacobson K, Krogfelt KA, Vallance B. A10 AN ULCERATIVE COLITIS ESCHERICHIA COLI PATHOBIONT COLONIZES THE INTESTINAL MUCOSA OF SUSCEPTIBLE HOSTS AND PROMOTES COLITIS VIA HEMOLYSIN PRODUCTION. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Yang
- Pediatrics, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
| | | | - E S Bosman
- Experimental medicine, University of British Columbia, Vancouver, BC, Canada
| | - C Struve
- Statens Serum Institut, Copenhagen, Denmark
| | - H Yu
- Pediatrics, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
| | - X Wu
- Pediatrics, CFRI and University of British Columbia, Vancouver, BC, Canada
| | - C Ma
- Pediatrics, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
| | - G Reid
- Pediatrics, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
| | - X Li
- Cleveland Clinic Lerner Research Institute, Cleveland, OH
| | - A M Petersen
- Hvidovre University Hospital, Copenhagen, Denmark
| | - K Jacobson
- BC Children’s Hospital, Vancouver, BC, Canada
| | | | - B Vallance
- BC Children’s Hospital, Vancouver, BC, Canada
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12
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Mirsepasi-Lauridsen HC, Bachmann Holmetoft U, Ingdam Halkjær S, Angeliki Krogfelt K, Munk Petersen A. Comparison of three commercial fecal calprotectin ELISA test kits used in patients with Inflammatory Bowel Disease. Scand J Gastroenterol 2016; 51:211-7. [PMID: 26359672 DOI: 10.3109/00365521.2015.1081399] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Fecal calprotectin is a noninvasive marker of intestinal inflammation used to distinguish between functional and organic bowel diseases and to evaluate disease activity among patients with Inflammatory Bowel Disease (IBD). The goal of this study was to compare three different ELISA tests measuring calprotectin in their accuracy to detect IBD and to distinguish between IBD patients with active or inactive disease. MATERIAL AND METHODS This study includes in total 148 fecal samples, 96 from patients with a previously confirmed IBD diagnosis and 52 from healthy controls, aged from 25 to 86 and 18 to 67 years, respectively. Disease activity in the patients was established using the following clinical activity indices: the Simple Clinical Colitis Activity Index (SCCAI), the Harvey Bradshaw Index (HBI) and the Modified Pouchitis Disease Activity Index (MPDAI). Three ELISA calprotectin tests (EK-CAL, CALPRO and HK325) were performed on fecal specimens and results compared. RESULTS The CALPRO calprotectin ELISA test was shown to have the best specificity of 96% compared to the HK325 and the EK-CAL calprotectin ELISA tests with 28% specificity and 74% specificity, respectively. A significant correlation between clinical activity indices and fecal calprotectin was found in patients with ulcerative colitis (p < 0.05***) and in patients with an ileoanal pouch (p < 0.05), but not in patients with Crohn's disease (p = 0.11). CONCLUSION The CALPRO ELISA test performed best in measuring calprotectin in feces.
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Affiliation(s)
- Hengameh Chloé Mirsepasi-Lauridsen
- a Department of Microbiology and Infection Control , Statens Serum Institut , Copenhagen , Denmark .,b Department of Biology , University of Copenhagen , Copenhagen , Denmark
| | - Ulla Bachmann Holmetoft
- c Department of Clinical Biochemistry, Immunology and Genetics , Statens Serum Institut , Copenhagen , Denmark
| | - Sofie Ingdam Halkjær
- d Department of Gastroenterology , Hvidovre University Hospital , Hvidovre , Denmark , and
| | - Karen Angeliki Krogfelt
- a Department of Microbiology and Infection Control , Statens Serum Institut , Copenhagen , Denmark
| | - Andreas Munk Petersen
- d Department of Gastroenterology , Hvidovre University Hospital , Hvidovre , Denmark , and.,e Department of Clinical Microbiology , Hvidovre University Hospital , Hvidovre , Denmark
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Mirsepasi-Lauridsen HC, Du Z, Struve C, Charbon G, Karczewski J, Krogfelt KA, Petersen AM, Wells JM. Secretion of Alpha-Hemolysin by Escherichia coli Disrupts Tight Junctions in Ulcerative Colitis Patients. Clin Transl Gastroenterol 2016; 7:e149. [PMID: 26938480 PMCID: PMC4822097 DOI: 10.1038/ctg.2016.3] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 12/16/2015] [Accepted: 12/17/2015] [Indexed: 01/16/2023] Open
Abstract
Objectives: The potential of Escherichia coli (E. coli) isolated from inflammatory bowel disease (IBD) patients to damage the integrity of the intestinal epithelium was investigated. Methods: E. coli strains isolated from patients with ulcerative colitis (UC) and healthy controls were tested for virulence capacity by molecular techniques and cytotoxic assays and transepithelial electric resistance (TER). E. coli isolate p19A was selected, and deletion mutants were created for alpha-hemolysin (α-hemolysin) (hly) clusters and cytotoxic necrotizing factor type 1 (cnf1). Probiotic E. coli Nissle and pathogenic E. coli LF82 were used as controls. Results: E. coli strains from patients with active UC completely disrupted epithelial cell tight junctions shortly after inoculation. These strains belong to phylogenetic group B2 and are all α-hemolysin positive. In contrast, probiotic E. coli Nissle, pathogenic E. coli LF82, four E. coli from patients with inactive UC and three E. coli strains from healthy controls did not disrupt tight junctions. E. coli p19A WT as well as cnf1, and single loci of hly mutants from cluster I and II were all able to damage Caco-2 (Heterogeneous human epithelial colorectal adenocarcinoma) cell tight junctions. However, this phenotype was lost in a mutant with knockout (Δ) of both hly loci (P<0.001). Conclusions: UC-associated E. coli producing α-hemolysin can cause rapid loss of tight junction integrity in differentiated Caco-2 cell monolayers. This effect was abolished in a mutant unable to express α-hemolysin. These results suggest that high Hly expression may be a mechanism by which specific strains of E. coli pathobionts can contribute to epithelial barrier dysfunction and pathophysiology of disease in IBD.
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Affiliation(s)
- Hengameh Chloé Mirsepasi-Lauridsen
- Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark.,Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Zhengyu Du
- Host Microbe Interactomics Group, Wageningen University, Wageningen, The Netherlands
| | - Carsten Struve
- Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark
| | - Godefroid Charbon
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Jurgen Karczewski
- Host Microbe Interactomics Group, Wageningen University, Wageningen, The Netherlands
| | - Karen Angeliki Krogfelt
- Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark
| | - Andreas Munk Petersen
- Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark.,Department of Clinical Microbiology, Hvidovre University Hospital, Hvidovre, Denmark.,Department of Gastroenterology, Hvidovre University Hospital, Hvidovre, Denmark
| | - Jerry M Wells
- Host Microbe Interactomics Group, Wageningen University, Wageningen, The Netherlands
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Hebbelstrup Jensen B, Röser D, Andreassen BU, Olsen KEP, Nielsen HV, Roldgaard BB, Schjørring S, Mirsepasi-Lauridsen HC, Jørgensen SL, Mortensen EM, Petersen AM, Krogfelt KA. Childhood diarrhoea in Danish day care centres could be associated with infant colic, low birthweight and antibiotics. Acta Paediatr 2016; 105:90-5. [PMID: 26355526 DOI: 10.1111/apa.13209] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 08/13/2015] [Accepted: 09/07/2015] [Indexed: 12/11/2022]
Abstract
AIM Diarrhoea is very common in children attending day care centres. The aim of this study was to examine certain predisposing risk factors for an association with diarrhoea, including foreign travel, treatment with antibiotics, having household pets, infant colic, bottle feeding, using a pacifier and low birthweight. METHODS A dynamic one-year follow-up cohort study comprising 179 children from 36 day care centres was conducted from September 2009 to July 2013 in Copenhagen, Denmark. Questionnaires were sent to the children's parents or legal guardians every two months for a year, requesting information on gastrointestinal symptoms and exposure. A logistic regression was performed to identify the odds ratios of different risk factors for diarrhoea. RESULTS The odds ratios for diarrhoea were 1.97 (0.93-4.20) for children with a history of infant colic, 1.91 (0.90-4.04) for low birthweight children and 1.45 (0.74-2.82) for children who had used antibiotics. Having a pet in the household had a possible protective effect towards diarrhoeal events, with an odds ratio of 0.47 (0.20-1.09). CONCLUSION A history of infant colic, low birthweight, and to a lesser extent antibiotic use, possibly increased the risk of diarrhoea in Danish children in day care centres.
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Affiliation(s)
| | - Dennis Röser
- Department of Microbiology and Infection Control; Statens Serum Institut; Copenhagen Denmark
- Department of Paediatrics; Hvidovre University Hospital; Copenhagen Denmark
| | | | - Katharina E. P. Olsen
- Department of Microbiology and Infection Control; Statens Serum Institut; Copenhagen Denmark
| | - Henrik Vedel Nielsen
- Department of Microbiology and Infection Control; Statens Serum Institut; Copenhagen Denmark
| | - Bent Bjørn Roldgaard
- Department of Microbiology and Infection Control; Statens Serum Institut; Copenhagen Denmark
| | - Susanne Schjørring
- Department of Microbiology and Infection Control; Statens Serum Institut; Copenhagen Denmark
| | | | - Steffen L. Jørgensen
- Department of Microbiology and Infection Control; Statens Serum Institut; Copenhagen Denmark
| | - Esben Munk Mortensen
- Department of Microbiology and Infection Control; Statens Serum Institut; Copenhagen Denmark
| | - Andreas Munk Petersen
- Department of Microbiology and Infection Control; Statens Serum Institut; Copenhagen Denmark
- Department of Gastroenterology; Hvidovre University Hospital; Copenhagen Denmark
- Department of Clinical Microbiology; Hvidovre University Hospital; Copenhagen Denmark
| | - Karen Angeliki Krogfelt
- Department of Microbiology and Infection Control; Statens Serum Institut; Copenhagen Denmark
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15
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Barfod KK, Vrankx K, Mirsepasi-Lauridsen HC, Hansen JS, Hougaard KS, Larsen ST, Ouwenhand AC, Krogfelt KA. The Murine Lung Microbiome Changes During Lung Inflammation and Intranasal Vancomycin Treatment. Open Microbiol J 2015; 9:167-79. [PMID: 26668669 PMCID: PMC4676059 DOI: 10.2174/1874285801509010167] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 09/01/2015] [Accepted: 09/02/2015] [Indexed: 12/15/2022] Open
Abstract
Most microbiome research related to airway diseases has focused on the gut microbiome. This is despite advances
in culture independent microbial identification techniques revealing that even healthy lungs possess a unique dynamic
microbiome. This conceptual change raises the question; if lung diseases could be causally linked to local dysbiosis
of the local lung microbiota. Here, we manipulate the murine lung and gut microbiome, in order to show that the lung microbiota
can be changed experimentally. We have used four different approaches: lung inflammation by exposure to carbon
nano-tube particles, oral probiotics and oral or intranasal exposure to the antibiotic vancomycin. Bacterial DNA was
extracted from broncho-alveolar and nasal lavage fluids, caecum samples and compared by DGGE. Our results show that:
the lung microbiota is sex dependent and not just a reflection of the gut microbiota, and that induced inflammation can
change lung microbiota. This change is not transferred to offspring. Oral probiotics in adult mice do not change lung microbiome
detectible by DGGE. Nasal vancomycin can change the lung microbiome preferentially, while oral exposure
does not. These observations should be considered in future studies of the causal relationship between lung microbiota
and lung diseases.
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Affiliation(s)
| | - Katleen Vrankx
- Applied Maths, Keistraat 120, 9830 Sint-Martens-Latem, Belgium
| | | | - Jitka Stilund Hansen
- National Research Centre for the Working Environment, Lersø parkallé 105, 2100 Denmark
| | - Karin Sørig Hougaard
- National Research Centre for the Working Environment, Lersø parkallé 105, 2100 Denmark
| | - Søren Thor Larsen
- National Research Centre for the Working Environment, Lersø parkallé 105, 2100 Denmark
| | - Arthur C Ouwenhand
- Active Nutrition, Dupont Nutrition & Health, Sokeritehtaantie 20, 02460 Kantvik Finland
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Jensen SR, Mirsepasi-Lauridsen HC, Thysen AH, Brynskov J, Krogfelt KA, Petersen AM, Pedersen AE, Brix S. Distinct inflammatory and cytopathic characteristics of Escherichia coli isolates from inflammatory bowel disease patients. Int J Med Microbiol 2015; 305:925-36. [PMID: 26522075 DOI: 10.1016/j.ijmm.2015.10.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 09/07/2015] [Accepted: 10/11/2015] [Indexed: 12/26/2022] Open
Abstract
Escherichia coli (E. coli) may be implicated in the pathogenesis of inflammatory bowel disease (IBD), as implied from a higher prevalence of mucosa-associated E. coli in the gut of IBD-affected individuals. However, it is unclear whether different non-diarrheagenic E. coli spp. segregate from each other in their ability to promote intestinal inflammation. Herein we compared the inflammation-inducing properties of non-diarrheagenic LF82, 691-04A, E. coli Nissle 1917 (ECN) and eleven new intestinal isolates from different locations in five IBD patients and one healthy control. Viable E. coli were cultured with human monocyte-derived dendritic cells (moDCs) and monolayers of intestinal epithelial cells (IECs), followed by analysis of secreted cytokines, intracellular levels of reactive oxygen species and cellular death. The IBD-associated E. coli LF82 induced the same dose-dependent inflammatory cytokine profile as ECN and ten of the new E. coli isolates displayed as high level IL-12p70, IL-1β, IL-23 and TNF-α from moDCs irrespective of their site of isolation (ileum/colon/faeces), disease origin (diseased/non-diseased) or known virulence factors. Contrarily, 691-04A and one new IBD E. coli isolate induced a different cellular phenotype with enhanced killing of moDCs and IECs, coupled to elevated IL-18. The cytopathic nature of 691-04A and one other IBD E. coli isolate suggests that colonization with specific non-diarrheagenic E. coli could promote intestinal barrier leakage and profound intestinal inflammation, while LF82, ECN and the remaining non-diarrheagenic E. coli isolates hold notorious pro-inflammatory characteristics that can progress inflammation in case of intestinal barrier leakage.
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Affiliation(s)
- Stina Rikke Jensen
- Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark, Denmark
| | | | - Anna Hammerich Thysen
- Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark, Denmark
| | - Jørn Brynskov
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, Denmark
| | - Karen A Krogfelt
- Department of Microbiology and Infection Control, Statens Serum Institut, Denmark
| | - Andreas Munk Petersen
- Department of Gastroenterology, Medical Section, Hvidovre Hospital, University of Copenhagen, Denmark; Department of Clinical Microbiology, Hvidovre Hospital, University of Copenhagen, Denmark
| | - Anders Elm Pedersen
- Department of Immunology and Microbiology, University of Copenhagen, Denmark
| | - Susanne Brix
- Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark, Denmark.
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