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Tsakiroglou M, Evans A, Doce-Carracedo A, Little M, Hornby R, Roberts P, Zhang E, Miyajima F, Pirmohamed M. Gene Expression Dysregulation in Whole Blood of Patients with Clostridioides difficile Infection. Int J Mol Sci 2024; 25:12653. [PMID: 39684365 DOI: 10.3390/ijms252312653] [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: 09/21/2024] [Revised: 11/19/2024] [Accepted: 11/22/2024] [Indexed: 12/18/2024] Open
Abstract
Clostridioides difficile (C. difficile) is a global threat and has significant implications for individuals and health care systems. Little is known about host molecular mechanisms and transcriptional changes in peripheral immune cells. This is the first gene expression study in whole blood from patients with C. difficile infection. We took blood and stool samples from patients with toxigenic C. difficile infection (CDI), non-toxigenic C. difficile infection (GDH), inflammatory bowel disease (IBD), diarrhea from other causes (DC), and healthy controls (HC). We performed transcriptome-wide RNA profiling on peripheral blood to identify diarrhea common and CDI unique gene sets. Diarrhea groups upregulated innate immune responses with neutrophils at the epicenter. The common signature associated with diarrhea was non-specific and shared by various other inflammatory conditions. CDI had a unique 45 gene set reflecting the downregulation of humoral and T cell memory functions. Dysregulation of immunometabolic genes was also abundant and linked to immune cell fate during differentiation. Whole transcriptome analysis of white cells in blood from patients with toxigenic C. difficile infection showed that there is an impairment of adaptive immunity and immunometabolism.
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Affiliation(s)
- Maria Tsakiroglou
- Department of Pharmacology and Therapeutics, Institute of Systems Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GL, UK
| | - Anthony Evans
- Computational Biology Facility, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7BE, UK
| | - Alejandra Doce-Carracedo
- Department of Pharmacology and Therapeutics, Institute of Systems Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GL, UK
- Clinical Directorate, GCP Laboratories, University of Liverpool, Liverpool L7 8TX, UK
| | - Margaret Little
- Department of Pharmacology and Therapeutics, Institute of Systems Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GL, UK
| | - Rachel Hornby
- Department of Pharmacology and Therapeutics, Institute of Systems Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GL, UK
| | - Paul Roberts
- Department of Pharmacology and Therapeutics, Institute of Systems Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GL, UK
- Faculty of Science and Engineering, School of Biomedical Science and Physiology, University of Wolverhampton, Wolverhampton WV1 1LZ, UK
| | - Eunice Zhang
- Department of Pharmacology and Therapeutics, Institute of Systems Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GL, UK
| | - Fabio Miyajima
- Department of Pharmacology and Therapeutics, Institute of Systems Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GL, UK
- Oswaldo Cruz Foundation (Fiocruz), Branch Ceara, Eusebio 61773-270, Brazil
| | - Munir Pirmohamed
- Department of Pharmacology and Therapeutics, Institute of Systems Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GL, UK
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Hunt A, Drwiega E, Wang Y, Danziger L. A review of fecal microbiota, live-jslm for the prevention of recurrent Clostridioides difficile infection. Am J Health Syst Pharm 2024; 81:e402-e411. [PMID: 38470061 DOI: 10.1093/ajhp/zxae066] [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: 03/09/2024] [Indexed: 03/13/2024] Open
Abstract
PURPOSE To review the composition, preparation, proposed mechanism of action, safety, efficacy, and current place in therapy of Rebyota (fecal microbiota, live-jslm). SUMMARY As the first agent in a new class of drugs, live biotherapeutic products (LBPs), fecal microbiota, live-jslm offers another therapeutic approach for the prevention of recurrent Clostridioides difficile infection (rCDI). LBPs are given following antibiotic therapy for C. difficile to reintroduce certain bacteria present in the normal microbiome, as a means to reconstitute the microbiome of infected individuals. This review provides a summary of phase 2 and 3 clinical trials, product information, discussion of data limitations, and recommendations for place in therapy. High efficacy rates compared to placebo with sustained response up to 24 months after administration have been reported. The majority of adverse events identified were mild to moderate without significant safety signals. CONCLUSION Fecal microbiota, live-jslm has consistently been shown in randomized trials to be safe and effective in reducing rCDI. Its approval marks the culmination of decades of work to identify, characterize, and refine the intestinal microbiome to create pharmaceutical products.
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Affiliation(s)
- Aaron Hunt
- University of Illinois Chicago College of Pharmacy, Chicago, IL, USA
| | - Emily Drwiega
- University of Illinois Chicago College of Pharmacy, Chicago, IL, USA
| | - Yifan Wang
- University of Illinois Chicago College of Pharmacy, Chicago, IL, USA
| | - Larry Danziger
- University of Illinois Chicago College of Pharmacy, Chicago, IL, USA
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3
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Markantonis JE, Fallon JT, Madan R, Alam MZ. Clostridioides difficile Infection: Diagnosis and Treatment Challenges. Pathogens 2024; 13:118. [PMID: 38392856 PMCID: PMC10891949 DOI: 10.3390/pathogens13020118] [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: 01/05/2024] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
Clostridioides difficile is the most important cause of healthcare-associated diarrhea in the United States. The high incidence and recurrence rates of C. difficile infection (CDI), associated with high morbidity and mortality, pose a public health challenge. Although antibiotics targeting C. difficile bacteria are the first treatment choice, antibiotics also disrupt the indigenous gut flora and, therefore, create an environment that is favorable for recurrent CDI. The challenge of treating CDI is further exacerbated by the rise of antibiotic-resistant strains of C. difficile, placing it among the top five most urgent antibiotic resistance threats in the USA. The evolution of antibiotic resistance in C. difficile involves the acquisition of new resistance mechanisms, which can be shared among various bacterial species and different C. difficile strains within clinical and community settings. This review provides a summary of commonly used diagnostic tests and antibiotic treatment strategies for CDI. In addition, it discusses antibiotic treatment and its resistance mechanisms. This review aims to enhance our current understanding and pinpoint knowledge gaps in antimicrobial resistance mechanisms in C. difficile, with an emphasis on CDI therapies.
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Affiliation(s)
- John E. Markantonis
- Department of Pathology and Laboratory Medicine, Brody School of Medicine, East Carolina University, 600 Moye Boulevard, Greenville, NC 27834, USA; (J.E.M.); (J.T.F.)
| | - John T. Fallon
- Department of Pathology and Laboratory Medicine, Brody School of Medicine, East Carolina University, 600 Moye Boulevard, Greenville, NC 27834, USA; (J.E.M.); (J.T.F.)
| | - Rajat Madan
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA;
- Veterans Affairs Medical Center, Cincinnati, OH 45220, USA
| | - Md Zahidul Alam
- Department of Pathology and Laboratory Medicine, Brody School of Medicine, East Carolina University, 600 Moye Boulevard, Greenville, NC 27834, USA; (J.E.M.); (J.T.F.)
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4
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Fachi JL, Vinolo MAR, Colonna M. Reviewing the Clostridioides difficile Mouse Model: Insights into Infection Mechanisms. Microorganisms 2024; 12:273. [PMID: 38399676 PMCID: PMC10891951 DOI: 10.3390/microorganisms12020273] [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: 12/24/2023] [Revised: 01/16/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
Clostridioides difficile is an anaerobic, spore-forming bacterium associated with intestinal infection, manifesting a broad spectrum of gastrointestinal symptoms, ranging from mild diarrhea to severe colitis. A primary risk factor for the development of C. difficile infection (CDI) is antibiotic exposure. Elderly and immunocompromised individuals are particularly vulnerable to CDI. A pivotal aspect for comprehending the complexities of this infection relies on the utilization of experimental models that mimic human CDI transmission, pathogenesis, and progression. These models offer invaluable insights into host-pathogen interactions and disease dynamics, and serve as essential tools for testing potential therapeutic approaches. In this review, we examine the animal model for CDI and delineate the stages of infection, with a specific focus on mice. Our objective is to offer an updated description of experimental models employed in the study of CDI, emphasizing both their strengths and limitations.
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Affiliation(s)
- José L. Fachi
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA;
| | - Marco A. R. Vinolo
- Department of Genetics and Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas 13083-862, SP, Brazil;
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA;
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Barbero AM, Hernández Del Pino RE, Fuentes F, Barrionuevo P, Pasquinelli V. Platelets promote human macrophages-mediated macropinocytosis of Clostridioides difficile. Front Cell Infect Microbiol 2024; 13:1252509. [PMID: 38249298 PMCID: PMC10796631 DOI: 10.3389/fcimb.2023.1252509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 12/11/2023] [Indexed: 01/23/2024] Open
Abstract
Clostridioides difficile is the main causative agent of hospital-acquired diarrhea and the potentially lethal disease, C. difficile infection. The cornerstone of the current therapy is the use of antibiotics, which is not fully effective. The molecular mechanisms, inflammatory conditions and host-immune responses that could benefit the persistence or elimination of C. difficile remain unclear. Macrophages perform different ways of endocytosis as part of their immune surveillance functions and platelets, classically known for their coagulatory role, are also important modulators of the immune system. The aim of this study was to evaluate the endocytosis of vegetative C. difficile by human macrophages and the involvement of platelets in this process. Our results showed that both macrophages and platelets interact with live and heat-killed C. difficile. Furthermore, platelets form complexes with human monocytes in healthy donor's fresh blood and the presence of C. difficile increased these cell-cell interactions. Using flow cytometry and confocal microscopy, we show that macrophages can internalize C. difficile and that platelets improve this uptake. By using inhibitors of different endocytic pathways, we demonstrate that macropinocytosis is the route of entry of C. difficile into the cell. Taken together, our findings are the first evidence for the internalization of vegetative non-toxigenic and hypervirulent C. difficile by human macrophages and highlight the role of platelets in innate immunity during C. difficile infection. Deciphering the crosstalk of C. difficile with immune cells could provide new tools for understanding the pathogenesis of C. difficile infection and for the development of host-directed therapies.
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Affiliation(s)
- Angela María Barbero
- Centro de Investigaciones Básicas y Aplicadas (CIBA), Universidad Nacional del Noroeste de la Provincia de Buenos Aires (UNNOBA), Buenos Aires, Argentina
- Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires (CIT NOBA), UNNOBA-Universidad Nacional de San Antonio de Areco (UNSAdA)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Rodrigo Emanuel Hernández Del Pino
- Centro de Investigaciones Básicas y Aplicadas (CIBA), Universidad Nacional del Noroeste de la Provincia de Buenos Aires (UNNOBA), Buenos Aires, Argentina
- Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires (CIT NOBA), UNNOBA-Universidad Nacional de San Antonio de Areco (UNSAdA)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Federico Fuentes
- Instituto de Medicina Experimental (CONICET-Academia Nacional de Medicina), Buenos Aires, Argentina
| | - Paula Barrionuevo
- Instituto de Medicina Experimental (CONICET-Academia Nacional de Medicina), Buenos Aires, Argentina
| | - Virginia Pasquinelli
- Centro de Investigaciones Básicas y Aplicadas (CIBA), Universidad Nacional del Noroeste de la Provincia de Buenos Aires (UNNOBA), Buenos Aires, Argentina
- Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires (CIT NOBA), UNNOBA-Universidad Nacional de San Antonio de Areco (UNSAdA)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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6
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Campidelli C, Bruxelle JF, Collignon A, Péchiné S. Immunization Strategies Against Clostridioides difficile. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1435:117-150. [PMID: 38175474 DOI: 10.1007/978-3-031-42108-2_7] [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: 01/05/2024]
Abstract
Clostridioides difficile (C. difficile) infection (CDI) is an important healthcare but also a community-associated disease. CDI is considered a public health threat and an economic burden. A major problem is the high rate of recurrences. Besides classical antibiotic treatments, new therapeutic strategies are needed to prevent infection, to treat patients, and to prevent recurrences. If fecal transplantation has been recommended to treat recurrences, another key approach is to elicit immunity against C. difficile and its virulence factors. Here, after a summary concerning the virulence factors, the host immune response against C. difficile, and its role in the outcome of disease, we review the different approaches of passive immunotherapies and vaccines developed against CDI. Passive immunization strategies are designed in function of the target antigen, the antibody-based product, and its administration route. Similarly, for active immunization strategies, vaccine antigens can target toxins or surface proteins, and immunization can be performed by parenteral or mucosal routes. For passive immunization and vaccination as well, we first present immunization assays performed in animal models and second in humans and associated clinical trials. The different studies are presented according to the mode of administration either parenteral or mucosal and the target antigens and either toxins or colonization factors.
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Affiliation(s)
- Camille Campidelli
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
| | - Jean-François Bruxelle
- CIRI-Centre International de Recherche en Infectiologie, Université de Lyon, Université Claude Bernard Lyon 1, Inserm U1111, CNRS UMR5308, ENS Lyon, Lyon, France
| | - Anne Collignon
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
| | - Severine Péchiné
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France.
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7
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Naz F, Petri WA. Host Immunity and Immunization Strategies for Clostridioides difficile Infection. Clin Microbiol Rev 2023; 36:e0015722. [PMID: 37162338 PMCID: PMC10283484 DOI: 10.1128/cmr.00157-22] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023] Open
Abstract
Clostridioides difficile infection (CDI) represents a significant challenge to public health. C. difficile-associated mortality and morbidity have led the U.S. CDC to designate it as an urgent threat. Moreover, recurrence or relapses can occur in up to a third of CDI patients, due in part to antibiotics being the primary treatment for CDI and the major cause of the disease. In this review, we summarize the current knowledge of innate immune responses, adaptive immune responses, and the link between innate and adaptive immune responses of the host against CDI. The other major determinants of CDI, such as C. difficile toxins, the host microbiota, and related treatments, are also described. Finally, we discuss the known therapeutic approaches and the current status of immunization strategies for CDI, which might help to bridge the knowledge gap in the generation of therapy against CDI.
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Affiliation(s)
- Farha Naz
- Division of Infectious Diseases and International Health, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - William A. Petri
- Division of Infectious Diseases and International Health, University of Virginia School of Medicine, Charlottesville, Virginia, USA
- Department of Pathology, University of Virginia School of Medicine, Charlottesville, Virginia, USA
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8
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Yadegar A, Pakpoor S, Ibrahim FF, Nabavi-Rad A, Cook L, Walter J, Seekatz AM, Wong K, Monaghan TM, Kao D. Beneficial effects of fecal microbiota transplantation in recurrent Clostridioides difficile infection. Cell Host Microbe 2023; 31:695-711. [PMID: 37167952 DOI: 10.1016/j.chom.2023.03.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Fecal microbiota transplantation (FMT) is highly effective in preventing recurrent Clostridioides difficile infection (rCDI). However, the mechanisms underpinning its clinical efficacy are incompletely understood. Herein, we provide an overview of rCDI pathogenesis followed by a discussion of potential mechanisms of action focusing on the current understanding of trans-kingdom microbial, metabolic, immunological, and epigenetic mechanisms. We then outline the current research gaps and offer methodological recommendations for future studies to elevate the quality of research and advance knowledge translation. By combining interventional trials with multiomics technology and host and environmental factors, analyzing longitudinally collected biospecimens will generate results that can be validated with animal and other models. Collectively, this will confirm causality and improve translation, ultimately to develop targeted therapies to replace FMT.
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Affiliation(s)
- Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sepideh Pakpoor
- School of Engineering, University of British Columbia, Kelowna, BC, Canada
| | - Fathima F Ibrahim
- National Institute for Health Research Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK; Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Ali Nabavi-Rad
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Laura Cook
- Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC, Australia
| | - Jens Walter
- School of Microbiology, Department of Medicine and APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Anna M Seekatz
- Department of Biological Sciences, Clemson University, Clemson, SC, USA
| | - Karen Wong
- Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Tanya M Monaghan
- National Institute for Health Research Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK; Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK.
| | - Dina Kao
- Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, AB, Canada.
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Ivashkin VT, Maev IV, Andreev DN, Goloshchapov OV, Derinov AA, Zolnikova OY, Ivashkin KV, Kiseleva OY, Kiryukhin AP, Lyashenko OS, Poluektova EA, Tertychnyy AS, Trukhmanov AS, Ulyanin AI, Sheptulin AA, Shifrin OS. Modern Approaches to the Diagnosis and treatment of <i>Clostridioides difficile (C. difficile)</i>-associated Disease in Adults (literature Review and Expert Council Resolution). RUSSIAN JOURNAL OF GASTROENTEROLOGY, HEPATOLOGY, COLOPROCTOLOGY 2023; 33:19-33. [DOI: 10.22416/1382-4376-2023-33-2-19-33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2024]
Abstract
Aim: to review the modern approaches to the diagnosis and treatment ofC. difficile-associated disease in adults and present the resolution of the Expert Council held on March 25, 2023 in Moscow.General provisions.C. difficileis the most important nosocomial pathogen which spores are also commonly found in the environment. Microbiota impairment, primarily due to the use of antibacterial drugs, is a key stage in the development ofC. difficile-associated disease. A search for an infection should be carried out only in patients with diarrhea, and it is advisable to use at least 2 laboratory methods. The drug of choice for first-line treatment is vancomycin. If drug treatment is ineffective or the patient has recurrent clostridial infection, fecal microbiota transplantation should be considered. The probiotic strainSaccharomyces boulardii CNCM I-745has a direct inhibitory effect onC. difficiletoxin A, promotes normalization of the intestinal microbiota composition, and decreases the inflammatory reaction in colonic mucosa colonized with a toxigenic strain ofC. difficile.Conclusions. Addition of the probiotic strainSaccharomyces boulardii CNCM I-745to antibacterial therapy promotes both primary and secondary prevention ofC. difficile-associated disease.
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Affiliation(s)
- V. T. Ivashkin
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - I. V. Maev
- A.I. Yevdokimov Moscow State University of Medicine and Dentistry
| | - D. N. Andreev
- A.I. Yevdokimov Moscow State University of Medicine and Dentistry
| | | | - A. A. Derinov
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - O. Yu. Zolnikova
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - K. V. Ivashkin
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - O. Yu. Kiseleva
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - A. P. Kiryukhin
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - O. S. Lyashenko
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - E. A. Poluektova
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - A. S. Tertychnyy
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - A. S. Trukhmanov
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - A. I. Ulyanin
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - A. A. Sheptulin
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
| | - O. S. Shifrin
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
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Zhang T, Ren Y, Yang C, Gebeyew K, Gao M, He Z, Tan Z. An integrated transcriptome and microbial community analysis reveals potential mechanisms for increased immune responses when replacing silybum marianum meal with soybean meal in growing lambs. Front Microbiol 2023; 14:1093129. [PMID: 36937266 PMCID: PMC10018209 DOI: 10.3389/fmicb.2023.1093129] [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: 11/08/2022] [Accepted: 02/10/2023] [Indexed: 03/06/2023] Open
Abstract
Silybum marianum meal is a by-product that remains silymarin complex and is perceived as a potential-protein source. The potential and its mechanism of silybum marianum meal as a protein supplement in ruminants were evaluated by testing the growth performance, biochemical parameters, cytokine levels, gut transcriptome and microbial community profiles. Forty-two male Hulunbeier growing lambs (aged about 3-month-old; averaged body weight of 21.55 kg) were randomly divided into the CON (with 10% soybean meal) and SIL groups (with 10% silybum marianum meal). There was no significant difference in growth performance, feed intakes, or serum biochemical parameters between CON and SIL. The serum levels of IL-1β, TNF-α, TGF-β, HGF, and VEGF were all increased (p < 0.05) in the SIL group as compared with the CON group. Transcriptome gene set enrichment analysis (GSEA) revealed that the core genes in the rumen from SIL group were enriched with fructose and mannose metabolism, while the core genes in the ileum were enriched for three biological process, including digestive tract development, positive regulation of MAPK cascade, and regulation of I-kappaB kinase/NF-kappaB signaling. The 16S rDNA results showed that the relative abundance of Bacteroidetes, Firmicutes, Synergistetes, and Verrucomicrobia in the rumen from SIL group was significantly higher than that in CON group (p < 0.05), whereas Proteobacteria was significantly lower than that in CON group (p < 0.05). The LEfSe analysis showed that the genera Pyramidobacter, Saccharofermentans, Anaerovibrio, Oscillibacter and Barnesiella were enriched in the rumen from SIL group, whereas Sharpea was enriched in the CON group (LDA > 2). In the ileum, there were no significant differences in the phylum-level classification of microbes observed. At the genus level, the relative abundances of Bifidobacterium and Ruminococcus in the ileum from SIL group were significantly higher than that in the CON group (p < 0.05), whereas the relative abundance of Clostridium_XI was lower (p < 0.05). Correlation analysis showed that Clostridium_XI was negatively correlated with VEGF, TGF-β, TNF-α and HGF (p < 0.05). Core genes BMP4 and CD4 were negatively correlated with Clostridium_XI (p < 0.05). Our results indicated that supplementing silybum marianum meal as a replacement for soybean meal resulted in increased cytokines production without affecting growth performance in growing lambs, and the enrichment of immune-related genes and altered microbial community in the ileum were contributed to the increased immune responses.
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Affiliation(s)
- Tianxi Zhang
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
- University of Chinese Academy of Science, Beijing, China
| | - Yanbo Ren
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
- School of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Chao Yang
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
- University of Chinese Academy of Science, Beijing, China
| | - Kefyalew Gebeyew
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
- University of Chinese Academy of Science, Beijing, China
| | - Min Gao
- Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot, China
| | - Zhixiong He
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
- University of Chinese Academy of Science, Beijing, China
- *Correspondence: Zhixiong He,
| | - Zhiliang Tan
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
- University of Chinese Academy of Science, Beijing, China
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11
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Nibbering B, Gerding DN, Kuijper EJ, Zwittink RD, Smits WK. Host Immune Responses to Clostridioides difficile: Toxins and Beyond. Front Microbiol 2022; 12:804949. [PMID: 34992590 PMCID: PMC8724541 DOI: 10.3389/fmicb.2021.804949] [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: 10/29/2021] [Accepted: 11/22/2021] [Indexed: 12/17/2022] Open
Abstract
Clostridioides difficile is often resistant to the actions of antibiotics to treat other bacterial infections and the resulting C. difficile infection (CDI) is among the leading causes of nosocomial infectious diarrhea worldwide. The primary virulence mechanism contributing to CDI is the production of toxins. Treatment failures and recurrence of CDI have urged the medical community to search for novel treatment options. Strains that do not produce toxins, so called non-toxigenic C. difficile, have been known to colonize the colon and protect the host against CDI. In this review, a comprehensive description and comparison of the immune responses to toxigenic C. difficile and non-toxigenic adherence, and colonization factors, here called non-toxin proteins, is provided. This revealed a number of similarities between the host immune responses to toxigenic C. difficile and non-toxin proteins, such as the influx of granulocytes and the type of T-cell response. Differences may reflect genuine variation between the responses to toxigenic or non-toxigenic C. difficile or gaps in the current knowledge with respect to the immune response toward non-toxigenic C. difficile. Toxin-based and non-toxin-based immunization studies have been evaluated to further explore the role of B cells and reveal that plasma cells are important in protection against CDI. Since the success of toxin-based interventions in humans to date is limited, it is vital that future research will focus on the immune responses to non-toxin proteins and in particular non-toxigenic strains.
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Affiliation(s)
- Britt Nibbering
- Center for Microbiome Analyses and Therapeutics, Leiden University Medical Center, Leiden, Netherlands.,Department of Medical Microbiology, Leiden University Medical Center, Leiden, Netherlands
| | - Dale N Gerding
- Department of Veterans Affairs, Research Service, Edward Hines Jr. VA Hospital, Hines, IL, United States
| | - Ed J Kuijper
- Center for Microbiome Analyses and Therapeutics, Leiden University Medical Center, Leiden, Netherlands.,Department of Medical Microbiology, Leiden University Medical Center, Leiden, Netherlands
| | - Romy D Zwittink
- Center for Microbiome Analyses and Therapeutics, Leiden University Medical Center, Leiden, Netherlands.,Department of Medical Microbiology, Leiden University Medical Center, Leiden, Netherlands
| | - Wiep Klaas Smits
- Center for Microbiome Analyses and Therapeutics, Leiden University Medical Center, Leiden, Netherlands.,Department of Medical Microbiology, Leiden University Medical Center, Leiden, Netherlands
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McKee HK, Kajiwara C, Yamaguchi T, Ishii Y, Shimizu N, Ohara A, Tateda K. Clostridioides difficile toxins enhanced the in vitro production of CXC chemokine ligand 2 and tumor necrosis factor-α via Toll-like receptors in macrophages. J Med Microbiol 2021; 70. [PMID: 33830910 DOI: 10.1099/jmm.0.001342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Introduction. Clostridioides difficile infection (CDI) causes toxin-mediated enteropathy, such as antibiotic-associated diarrhoea and pseudomembranous colitis. Rho-glucosylating toxin A (TcdA) and toxin B (TcdB) have been clearly implicated in pathogenesis, whereas the virulence of binary toxin (CDT) is still debated.Hypothesis statement. We hypothesized that CDT is involved in the host immune response and plays a pivotal role in establishing virulence by modulating pro-inflammatory cytokine production; this is achieved through the integral Toll-like receptor (TLR) signalling pathways.Aim. The aim of the present study was to determine whether and how CDT impacts macrophages compared to TcdA or TcdB by examining the induction of CXC chemokine ligand 2 (CXCL2) and tumour necrosis factor-α (TNF-α), both of which are crucial in mediating local and systematic inflammatory responses.Methodology. RAW264.7 cells or transfected human embryonic kidney (HEK) 293 T cells were incubated with TcdA, TcdB, or CDT. In some experiments, a neutralizing antibody against TLR2 or TLR4, or myeloid differentiation 88 inhibitory peptide were added. The amount of CXCL2 and TNF-α secreted was then measured.Results. In RAW264.7 macrophages, CXCL2 and TNF-α were produced via the Toll-like receptor 2 (TLR2) or Toll-like receptor 4 (TLR4) pathway in a TcdA, TcdB, or CDT dose-dependent manner. Interleukin-8 secretion was induced in TLR4/MD2/CD14-transfected, but not in TLR2-transfected, HEK 293 T cells following TcdB or CDT exposure.Conclusion. Our results showed that C. difficile toxins, including CDT, enhanced macrophage-mediated CXCL2 and TNF-α production via TLR2 and TLR4, indicating that CDT affects host immune responses.
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Affiliation(s)
- Hiroe Konishi McKee
- Department of Pediatrics, Toho University Ohashi Medical Center, Tokyo 153-8515, Japan.,Department of Pediatrics, Toho University Graduate School of Medicine, Tokyo 143-8540, Japan
| | - Chiaki Kajiwara
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo 143-8540, Japan
| | - Tetsuo Yamaguchi
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo 143-8540, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo 143-8540, Japan
| | - Norikazu Shimizu
- Department of Pediatrics, Toho University Ohashi Medical Center, Tokyo 153-8515, Japan.,Department of Pediatrics, Toho University Graduate School of Medicine, Tokyo 143-8540, Japan
| | - Akira Ohara
- Department of Pediatrics, Toho University Graduate School of Medicine, Tokyo 143-8540, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo 143-8540, Japan
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