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Knudsen LA, Zachariassen LSF, Strube ML, Havelund JF, Pilecki B, Nexoe AB, Møller FT, Sørensen SB, Marcussen N, Færgeman NJ, Franke A, Bang C, Holmskov U, Hansen AK, Andersen V. Assessment of the Inflammatory Effects of Gut Microbiota from Human Twins Discordant for Ulcerative Colitis on Germ-free Mice. Comp Med 2024; 74. [PMID: 38508697 PMCID: PMC11078274 DOI: 10.30802/aalas-cm-23-000065] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/12/2023] [Accepted: 02/15/2024] [Indexed: 03/22/2024]
Abstract
Disturbances in gut microbiota are prevalent in inflammatory bowel disease (IBD), which includes ulcerative colitis (UC). However, whether these disturbances contribute to development of the disease or are a result of the disease is unclear. In pairs of human twins discordant for IBD, the healthy twin has a higher risk of developing IBD and a gut microbiota that is more similar to that of IBD patients as compared with healthy individuals. Furthermore, appropriate medical treatment may mitigate these disturbances. To study the correlation between microbiota and IBD, we transferred stool samples from a discordant human twin pair: one twin being healthy and the other receiving treatment for UC. The stool samples were transferred from the disease-discordant twins to germ-free pregnant dams. Colitis was induced in the offspring using dextran sodium sulfate. As compared with offspring born to mice dams inoculated with stool from the healthy cotwin, offspring born to dams inoculated with stool from the UC-afflicted twin had a lower disease activity index, less gut inflammation, and a microbiota characterized by higher α diversity and a more antiinflammatory profile that included the presence and higher abundance of antiinflammatory species such as Akkermansia spp., Bacteroides spp., and Parabacteroides spp. These findings suggest that the microbiota from the healthy twin may have had greater inflammatory properties than did that of the twin undergoing UC treatment.
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Affiliation(s)
- Lina A Knudsen
- Medical Department, Molecular Diagnostic and Clinical Research, University Hospital of Southern Denmark, Aabenraa, Denmark
- IRS-Center Sonderjylland, University of Southern Denmark, Odense, Denmark
| | - Line SF Zachariassen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Mikael L Strube
- DTU Bioengineering, Technical University of Denmark, Lyngby, Denmark
| | - Jesper F Havelund
- VILLUM Center for Bioanalytical Sciences, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense M, Denmark
| | - Bartosz Pilecki
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Anders B Nexoe
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Frederik T Møller
- Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark; and
| | - Signe B Sørensen
- Medical Department, Molecular Diagnostic and Clinical Research, University Hospital of Southern Denmark, Aabenraa, Denmark
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Niels Marcussen
- Department of Clinical Pathology, Odense University Hospital, Odense, Denmark
| | - Nils J Færgeman
- VILLUM Center for Bioanalytical Sciences, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense M, Denmark
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Corinna Bang
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Uffe Holmskov
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Axel K Hansen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Vibeke Andersen
- Medical Department, Molecular Diagnostic and Clinical Research, University Hospital of Southern Denmark, Aabenraa, Denmark
- IRS-Center Sonderjylland, University of Southern Denmark, Odense, Denmark
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
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Overgaard SH, Sørensen SB, Munk HL, Nexøe AB, Glerup H, Henriksen RH, Guldmann T, Pedersen N, Saboori S, Hvid L, Dahlerup JF, Hvas CL, Jawhara M, Andersen KW, Pedersen AK, Nielsen OH, Bergenheim F, Brodersen JB, Heitmann BL, Halldorsson TI, Holmskov U, Bygum A, Christensen R, Kjeldsen J, Ellingsen T, Andersen V. Impact of fibre and red/processed meat intake on treatment outcomes among patients with chronic inflammatory diseases initiating biological therapy: A prospective cohort study. Front Nutr 2022; 9:985732. [PMID: 36313095 PMCID: PMC9609158 DOI: 10.3389/fnut.2022.985732] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 09/20/2022] [Indexed: 12/27/2022] Open
Abstract
Background Biologic disease-modifying drugs have revolutionised the treatment of a number of chronic inflammatory diseases (CID). However, up to 60% of the patients do not have a sufficient response to treatment and there is a need for optimization of treatment strategies. Objective To investigate if the treatment outcome of biological therapy is associated with the habitual dietary intake of fibre and red/processed meat in patients with a CID. Methods In this multicentre prospective cohort study, we consecutively enrolled 233 adult patients with a diagnosis of Crohn's Disease, Ulcerative Colitis, Rheumatoid Arthritis (RA), Axial Spondyloarthritis, Psoriatic Arthritis and Psoriasis, for whom biologic therapy was planned, over a 3 year period. Patients with completed baseline food frequency questionnaires were stratified into a high fibre/low red and processed meat exposed group (HFLM) and an unexposed group (low fibre/high red and processed meat intake = LFHM). The primary outcome was the proportion of patients with a clinical response to biologic therapy after 14-16 weeks of treatment. Results Of the 193 patients included in our primary analysis, 114 (59%) had a clinical response to biologic therapy. In the HFLM group (N = 64), 41 (64%) patients responded to treatment compared to 73 (56%) in the LFHM group (N = 129), but the difference was not statistically significant (OR: 1.48, 0.72-3.05). For RA patients however, HFLM diet was associated with a more likely clinical response (82% vs. 35%; OR: 9.84, 1.35-71.56). Conclusion Habitual HFLM intake did not affect the clinical response to biological treatment across CIDs. HFLM diet in RA patients might be associated with better odds for responding to biological treatment, but this would need confirmation in a randomised trial. Trial registration (clinicaltrials.gov), identifier [NCT03173144].
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Affiliation(s)
- Silja H. Overgaard
- The Molecular Diagnostics and Clinical Research Unit, Departement of Blood Samples, Biochemistry and Immunology, University Hospital of Southern Denmark, Aabenraa, Denmark,Section for Biostatistics and Evidence-Based Research, The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark,Department of Regional Health Research, University of Southern Denmark, Odense, Denmark,*Correspondence: Silja H. Overgaard
| | - Signe B. Sørensen
- The Molecular Diagnostics and Clinical Research Unit, Departement of Blood Samples, Biochemistry and Immunology, University Hospital of Southern Denmark, Aabenraa, Denmark,Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Heidi L. Munk
- Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Odense, Denmark
| | - Anders B. Nexøe
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark,Department of Cancer and Inflammation Research, Odense University Hospital, Odense, Denmark,Department of Medical Gastroenterology, Odense University Hospital, Odense, Denmark
| | - Henning Glerup
- University Research Clinic for Innovative Patient Pathways, Silkeborg Regional Hospital, Silkeborg, Denmark
| | - Rikke H. Henriksen
- University Research Clinic for Innovative Patient Pathways, Silkeborg Regional Hospital, Silkeborg, Denmark
| | - Tanja Guldmann
- University Research Clinic for Innovative Patient Pathways, Silkeborg Regional Hospital, Silkeborg, Denmark
| | - Natalia Pedersen
- Department of Gastroenterology, Slagelse Hospital, Slagelse, Denmark
| | - Sanaz Saboori
- Department of Gastroenterology, Slagelse Hospital, Slagelse, Denmark
| | - Lone Hvid
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Jens F. Dahlerup
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Christian L. Hvas
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Mohamad Jawhara
- The Molecular Diagnostics and Clinical Research Unit, Departement of Blood Samples, Biochemistry and Immunology, University Hospital of Southern Denmark, Aabenraa, Denmark,Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark,Department of Surgery, University Hospital of Southern Denmark, Aabenraa, Denmark
| | - Karina W. Andersen
- The Molecular Diagnostics and Clinical Research Unit, Departement of Blood Samples, Biochemistry and Immunology, University Hospital of Southern Denmark, Aabenraa, Denmark,Department of Surgery, University Hospital of Southern Denmark, Aabenraa, Denmark
| | - Andreas K. Pedersen
- Department of Research and Learning, University Hospital of Southern Denmark, Aabenraa, Denmark
| | - Ole H. Nielsen
- Department of Gastroenterology, Herlev Hospital, University of Copenhagen, Herlev, Denmark
| | - Fredrik Bergenheim
- Department of Gastroenterology, Herlev Hospital, University of Copenhagen, Herlev, Denmark
| | - Jacob B. Brodersen
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark,Department of Gastroenterology, Hospital of Southwest Jutland, Esbjerg, Denmark
| | - Berit L. Heitmann
- Research Unit for Dietary Studies, The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark,Section for General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Thorhallur I. Halldorsson
- Faculty of Food Science and Nutrition, School of Health Sciences, University of Iceland, Reykjavík, Iceland
| | - Uffe Holmskov
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Anette Bygum
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark,Clinical Institute, University of Southern Denmark, Odense, Denmark
| | - Robin Christensen
- Section for Biostatistics and Evidence-Based Research, The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark,Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Odense, Denmark
| | - Jens Kjeldsen
- Department of Medical Gastroenterology, Odense University Hospital, Odense, Denmark,Research Unit of Medical Gastroenterology, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Torkell Ellingsen
- Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Odense, Denmark
| | - Vibeke Andersen
- The Molecular Diagnostics and Clinical Research Unit, Departement of Blood Samples, Biochemistry and Immunology, University Hospital of Southern Denmark, Aabenraa, Denmark,Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark,Open Patient Data Explorative Network, Department of Clinical Research, University of Southern, Odense, Denmark
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Sørensen SB, Bech LM, Meldal M, Breddam K. Mutational replacements of the amino acid residues forming the hydrophobic S4 binding pocket of subtilisin 309 from Bacillus lentus. Biochemistry 1993; 32:8994-9. [PMID: 8369272 DOI: 10.1021/bi00086a003] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The amino acid side chains of Ile107, Leu126, and Leu135 participate in the formation of the important hydrophobic S4 binding pocket of the subtilisin Savinase. Ile107 and Leu126, located on each side of the pocket, point toward each other, and Leu135 is situated at the bottom of the pocket. These amino acid residues have been substituted for other hydrophobic amino acid residues by site-directed mutagenesis, and the resulting enzymes have been characterized with respect to their P4 substrate preferences. The Leu126-->Ala or Phe substitutions reduce kcat/KM for the hydrolysis of all substrates to around 5% without altering the substrate preference. It is concluded that Leu126 is an essential structural part of the pocket which cannot be replaced without seriously affecting catalysis, consistent with the fact that Leu126 is conserved among all subtilisins. In contrast, the Ile107-->Gly, Ala, Val, Leu, or Phe and Leu135-->Ala, Val, or Phe substitutions strongly influence the P4 substrate preference, and some of the mutants exhibit large specificity changes for particular substrates when compared to wild-type Savinase. The results can be rationalized on the basis of Ile107 and Leu135 being responsible for steric repulsion of branched aliphatic and aromatic P4 side chains, respectively. Leu135 exclusively interacts with aromatic P4 side chains, and its replacement with less bulky amino acid residues alleviates steric repulsion such that the activity toward this type of substrates is enhanced. Conversely, the introduction of a more bulky amino acid residue at position 135 produces more steric repulsion and reduces the activity toward substrates with aromatic P4 side chains.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- S B Sørensen
- Carlsberg Laboratory, Department of Chemistry, Copenhagen Valby, Denmark
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