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Ke S, Villafuerte Gálvez JA, Sun Z, Cao Y, Pollock NR, Chen X, Kelly CP, Liu YY. Rational Design of Live Biotherapeutic Products for the Prevention of Clostridioides difficile Infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.30.591969. [PMID: 38746249 PMCID: PMC11092666 DOI: 10.1101/2024.04.30.591969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Clostridioides difficile infection (CDI) is one of the leading causes of healthcare- and antibiotic-associated diarrhea. While fecal microbiota transplantation (FMT) has emerged as a promising therapy for recurrent CDI, its exact mechanisms of action and long-term safety are not fully understood. Defined consortia of clonal bacterial isolates, known as live biotherapeutic products (LBPs), have been proposed as an alternative therapeutic option. However, the rational design of LBPs remains challenging. Here, we employ a computational pipeline and three independent metagenomic datasets to systematically identify microbial strains that have the potential to inhibit CDI. We first constructed the CDI-related microbial genome catalog, comprising 3,741 non-redundant metagenome-assembled genomes (nrMAGs) at the strain level. We then identified multiple potential protective nrMAGs that can be candidates for the design of microbial consortia targeting CDI, including strains from Dorea formicigenerans, Oscillibacter welbionis, and Faecalibacterium prausnitzii. Importantly, some of these potential protective nrMAGs were found to play an important role in the success of FMT, and the majority of the top protective nrMAGs can be validated by various previously reported findings. Our results demonstrate a computational framework for the rational selection of microbial strains targeting CDI, paving the way for the computational design of microbial consortia against other enteric infections.
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Affiliation(s)
- Shanlin Ke
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Javier A Villafuerte Gálvez
- Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA
| | - Zheng Sun
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Yangchun Cao
- Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People’s Republic of China
| | - Nira R Pollock
- Division of Infectious Disease, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA
- Department of Laboratory Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA
| | - Xinhua Chen
- Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA
| | - Ciarán P Kelly
- Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA
| | - Yang-Yu Liu
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
- Center for Artificial Intelligence and Modeling, The Carl R. Woese Institute of Genomic Biology, University of Illinois at Urbana-Champaign, Champaign, IL, USA
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Gao Y, Liu L, Cui Y, Zhang J, Wu X. The causality of gut microbiota on onset and progression of sepsis: a bi-directional Mendelian randomization analysis. Front Immunol 2024; 15:1266579. [PMID: 38698853 PMCID: PMC11063379 DOI: 10.3389/fimmu.2024.1266579] [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: 07/25/2023] [Accepted: 03/29/2024] [Indexed: 05/05/2024] Open
Abstract
Background Several observational studies have proposed a potential link between gut microbiota and the onset and progression of sepsis. Nevertheless, the causality of gut microbiota and sepsis remains debatable and warrants more comprehensive exploration. Methods We conducted a two-sample Mendelian randomization (MR) analysis to test the causality between gut microbiota and the onset and progression of sepsis. The genome-wide association study (GWAS) summary statistics for 196 bacterial traits were extracted from the MiBioGen consortium, whereas the GWAS summary statistics for sepsis and sepsis-related outcomes came from the UK Biobank. The inverse-variance weighted (IVW) approach was the primary method used to examine the causal association. To complement the IVW method, we utilized four additional MR methods. We performed a series of sensitivity analyses to examine the robustness of the causal estimates. Results We assessed the causality of 196 bacterial traits on sepsis and sepsis-related outcomes. Genus Coprococcus2 [odds ratio (OR) 0.81, 95% confidence interval (CI) (0.69-0.94), p = 0.007] and genus Dialister (OR 0.85, 95% CI 0.74-0.97, p = 0.016) had a protective effect on sepsis, whereas genus Ruminococcaceae UCG011 (OR 1.10, 95% CI 1.01-1.20, p = 0.024) increased the risk of sepsis. When it came to sepsis requiring critical care, genus Anaerostipes (OR 0.49, 95% CI 0.31-0.76, p = 0.002), genus Coprococcus1 (OR 0.65, 95% CI 0.43-1.00, p = 0.049), and genus Lachnospiraceae UCG004 (OR 0.51, 95% CI 0.34-0.77, p = 0.001) emerged as protective factors. Concerning 28-day mortality of sepsis, genus Coprococcus1 (OR 0.67, 95% CI 0.48-0.94, p = 0.020), genus Coprococcus2 (OR 0.48, 95% CI 0.27-0.86, p = 0.013), genus Lachnospiraceae FCS020 (OR 0.70, 95% CI 0.52-0.95, p = 0.023), and genus Victivallis (OR 0.82, 95% CI 0.68-0.99, p = 0.042) presented a protective effect, whereas genus Ruminococcus torques group (OR 1.53, 95% CI 1.00-2.35, p = 0.049), genus Sellimonas (OR 1.25, 95% CI 1.04-1.50, p = 0.019), and genus Terrisporobacter (OR 1.43, 95% CI 1.02-2.02, p = 0.040) presented a harmful effect. Furthermore, genus Coprococcus1 (OR 0.42, 95% CI 0.19-0.92, p = 0.031), genus Coprococcus2 (OR 0.34, 95% CI 0.14-0.83, p = 0.018), and genus Ruminiclostridium6 (OR 0.43, 95% CI 0.22-0.83, p = 0.012) were associated with a lower 28-day mortality of sepsis requiring critical care. Conclusion This MR analysis unveiled a causality between the 21 bacterial traits and sepsis and sepsis-related outcomes. Our findings may help the development of novel microbiota-based therapeutics to decrease the morbidity and mortality of sepsis.
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Affiliation(s)
| | | | | | | | - Xiuying Wu
- Department of Anesthesia, ShengJing Hospital of China Medical University, Shenyang, Liaoning, China
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Bonazzetti C, Rinaldi M, Cosentino F, Gatti M, Freire MP, Mularoni A, Clemente WT, Pierrotti LC, Aguado JM, Grossi P, Pea F, Viale P, Giannella M. Survey on the approach to antibiotic prophylaxis in liver and kidney transplant recipients colonized with "difficult to treat" Gram-negative bacteria. Transpl Infect Dis 2024; 26:e14238. [PMID: 38265107 DOI: 10.1111/tid.14238] [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: 11/07/2023] [Revised: 12/14/2023] [Accepted: 12/23/2023] [Indexed: 01/25/2024]
Abstract
BACKGROUND Performance of active screening for multidrug-resistant Gram-negative bacteria (MDR-GNB) and administration of targeted antibiotic prophylaxis (TAP) in colonized patients undergoing liver (LT) and/or kidney transplantation (KT) are controversial issues. METHODS Self-administered electronic cross-sectional survey disseminated from January to February 2022. Questionnaire consisted of four parts: hospital/transplant program characteristics, standard screening and antibiotic prophylaxis, clinical vignettes asking for TAP in patients undergoing LT and KT with prior infection/colonization with four different MDR-GNB (extended-spectrum cephalosporin-resistant Enterobacterales [ESCR-E], carbapenem-resistant Enterobacterales [CRE], multidrug-resistant Pseudomonas aeruginosa [MDR-Pa], and carbapenem-resistant Acinetobacter baumannii [CRAb]). RESULTS Fifty-five respondents participated from 14 countries, mostly infectious disease specialists (69%) with active transplant programs (>100 procedures/year for 34.5% KT and 23.6% LT), and heterogeneous local MDR-GNB prevalence from <15% (30.9%), 15%-30% (43.6%) to >30% (16.4%). The frequency of screening for ESCR-E, CRE, MDR-Pa, and CRAb was 22%, 54%, 17%, and 24% for LT, respectively, and 18%, 36%, 16%, and 11% for KT. Screening time-points were mainly at transplantation 100%, only one-third following transplantation. Screening was always based on rectal swab cultures (100%); multi-site sampling was reported in 40% of KT and 35% of LT. In LT clinical cases, 84%, 58%, 84%, and 40% of respondents reported TAP for prior infection/colonization with ESCR-E, CRE, MDR-Pa, and CRAb, respectively. In KT clinical cases, 55%, 39%, 87%, and 42% of respondents reported TAP use for prior infection/colonization with ESCR-E, CRE, MDR-Pa, and CRAb, respectively. CONCLUSION There is a large heterogeneity in screening and management of MDR-GNB carriage in LT and KT.
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Affiliation(s)
- Cecilia Bonazzetti
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- Infectious Diseases Unit, IRCCS Policlinico Sant'Orsola, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Matteo Rinaldi
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- Infectious Diseases Unit, IRCCS Policlinico Sant'Orsola, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Federica Cosentino
- Infectious Diseases Unit, IRCCS Policlinico Sant'Orsola, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Milo Gatti
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- Clinical Pharmacology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Maristela Pinheiro Freire
- Working Committee for Hospital Epidemiology and Infection Control, Hospital das Clinicas, Universidade de São Paulo, Sao Paulo, Brazil
| | - Alessandra Mularoni
- Unit of Infectious Diseases, IRCCS-ISMETT Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Italy
| | - Wanessa Trindade Clemente
- Department of Laboratory Medicine, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ligia Camera Pierrotti
- Immunosuppressed Infection Group, Divisão de Moléstias Infecciosas e Parasitárias do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| | - Jose Maria Aguado
- Unit of Infectious Diseases, Hospital Universitario "12 de Octubre", Instituto de Investigación Sanitaria Hospital "12 de Octubre" (imas12), CIBERINFEC, Universidad Complutense, Madrid, Spain
| | - Paolo Grossi
- Infectious and Tropical Diseases Unit, Department of Medicine and Surgery, University of Insubria-ASST-Sette Laghi, Varese, Italy
| | - Federico Pea
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- Clinical Pharmacology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Pierluigi Viale
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- Infectious Diseases Unit, IRCCS Policlinico Sant'Orsola, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Maddalena Giannella
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- Infectious Diseases Unit, IRCCS Policlinico Sant'Orsola, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
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Kriz J, Hysperska V, Bebrova E, Roznetinska M. Faecal microbiota transplantation for multidrug-resistant organism decolonization in spinal cord injury patients: a case series. Infect Prev Pract 2024; 6:100340. [PMID: 38357521 PMCID: PMC10865020 DOI: 10.1016/j.infpip.2024.100340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 12/18/2023] [Indexed: 02/16/2024] Open
Abstract
Introduction The increase of multidrug-resistant (MDR) bacteria in healthcare settings is a worldwide concern. Isolation precautions must be implemented to control the significant risk of transmitting these pathogens among patients. Antibiotic decolonization is not recommended because of the threat of increasing antibiotic resistance. However, restoring gut microflora through faecal microbiota transplantation (FMT) is a hopeful solution. Patients and method In 2019-2022, FMT was indicated in seven patients of the Spinal Cord Unit at University Hospital Motol who were colonized with MDR bacterial strains. Five patients tested positive for carriage of carbapenemase-producing Enterobacteriaceae, and two were carriers of vancomycin-resistant enterococci. Isolation measures were implemented in all patients. Donor faeces were obtained from healthy, young, screened volunteers. According to local protocol, 200-300 ml of suspension was applied through a nasoduodenal tube. Results The mean age of the patients was 43 years. The mean length of previous hospital stay was 93.2 days. All patients were treated with broad-spectrum antibiotics for infectious complications before detecting colonisation with MDR bacteria. MDR organism decolonization was achieved in five patients, and consequently, isolation measures could be removed. Colonization persisted in two patients, one of whom remained colonized even after a third FMT. No adverse events were reported after FMT. Conclusion FMT is a safe and effective strategy to eradicate MDR bacteria, even in spinal cord injured patients. FMT can allow relaxation of isolation facilitates, the participation of patients in a complete rehabilitation program, their social integration, and transfer to follow-up rehabilitation centres.
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Affiliation(s)
- Jiri Kriz
- Spinal Cord Unit, Department of Rehabilitation and Sports Medicine, 2 Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
- Department of Orthopaedics and Traumatology, 3 Faculty of Medicine, Charles University and University Hospital Kralovske Vinohrady, Prague, Czech Republic
| | - Veronika Hysperska
- Spinal Cord Unit, Department of Rehabilitation and Sports Medicine, 2 Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
| | - Eliska Bebrova
- Department of Medical Microbiology, 2 Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
| | - Marketa Roznetinska
- Department of Internal Medicine, 2 Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
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Woodworth MH, Conrad RE, Haldopoulos M, Pouch SM, Babiker A, Mehta AK, Sitchenko KL, Wang CH, Strudwick A, Ingersoll JM, Philippe C, Lohsen S, Kocaman K, Lindner BG, Hatt JK, Jones RM, Miller C, Neish AS, Friedman-Moraco R, Karadkhele G, Liu KH, Jones DP, Mehta CC, Ziegler TR, Weiss DS, Larsen CP, Konstantinidis KT, Kraft CS. Fecal microbiota transplantation promotes reduction of antimicrobial resistance by strain replacement. Sci Transl Med 2023; 15:eabo2750. [PMID: 37910603 PMCID: PMC10821315 DOI: 10.1126/scitranslmed.abo2750] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 06/05/2023] [Indexed: 11/03/2023]
Abstract
Multidrug-resistant organism (MDRO) colonization is a fundamental challenge in antimicrobial resistance. Limited studies have shown that fecal microbiota transplantation (FMT) can reduce MDRO colonization, but its mechanisms are poorly understood. We conducted a randomized, controlled trial of FMT for MDRO decolonization in renal transplant recipients called PREMIX (NCT02922816). Eleven participants were enrolled and randomized 1:1 to FMT or an observation period followed by delayed FMT if stool cultures were MDRO positive at day 36. Participants who were MDRO positive after one FMT were treated with a second FMT. At last visit, eight of nine patients who completed all treatments were MDRO culture negative. FMT-treated participants had longer time to recurrent MDRO infection versus PREMIX-eligible controls who were not treated with FMT. Key taxa (Akkermansia muciniphila, Alistipes putredinis, Phocaeicola dorei, Phascolarctobacterium faecium, Alistipes species, Mesosutterella massiliensis, Barnesiella intestinihominis, and Faecalibacterium prausnitzii) from the single feces donor used in the study that engrafted in recipients and metabolites such as short-chain fatty acids and bile acids in FMT-responding participants uncovered leads for rational microbiome therapeutic and diagnostic development. Metagenomic analyses revealed a previously unobserved mechanism of MDRO eradication by conspecific strain competition in an FMT-treated subset. Susceptible Enterobacterales strains that replaced baseline extended-spectrum β-lactamase-producing strains were not detectable in donor microbiota manufactured as FMT doses but in one case were detectable in the recipient before FMT. These data suggest that FMT may provide a path to exploit strain competition to reduce MDRO colonization.
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Affiliation(s)
- Michael H. Woodworth
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
- Emory Antibiotic Resistance Center; Atlanta, Georgia, 30322, USA
| | - Roth E Conrad
- Ocean Science & Engineering, School of Biological Sciences, Georgia Institute of Technology; Atlanta, Georgia, 30332, USA
| | | | - Stephanie M. Pouch
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
- Emory Antibiotic Resistance Center; Atlanta, Georgia, 30322, USA
| | - Ahmed Babiker
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
- Emory Antibiotic Resistance Center; Atlanta, Georgia, 30322, USA
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - Aneesh K. Mehta
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
- Emory Transplant Center; Atlanta, Georgia, 30322, USA
| | - Kaitlin L. Sitchenko
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - Charlotte H. Wang
- Emory College of Arts and Sciences, Emory University; Atlanta, Georgia, 30322, USA
| | - Amanda Strudwick
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - Jessica M. Ingersoll
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - Cécile Philippe
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - Sarah Lohsen
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - Kumru Kocaman
- School of Civil and Environmental Engineering, Georgia Institute of Technology; Atlanta, Georgia, 30332, USA
| | - Blake G. Lindner
- School of Civil and Environmental Engineering, Georgia Institute of Technology; Atlanta, Georgia, 30332, USA
| | - Janet K. Hatt
- School of Civil and Environmental Engineering, Georgia Institute of Technology; Atlanta, Georgia, 30332, USA
| | - Rheinallt M. Jones
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - Candace Miller
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - Andrew S. Neish
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - Rachel Friedman-Moraco
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | | | - Ken H. Liu
- Clinical Biomarkers Laboratory, Department of Medicine, Emory University; Atlanta, Georgia, 30322, USA
| | - Dean P. Jones
- Clinical Biomarkers Laboratory, Department of Medicine, Emory University; Atlanta, Georgia, 30322, USA
| | - C. Christina Mehta
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University; Atlanta, GA, 30322, USA
| | - Thomas R. Ziegler
- Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
| | - David S. Weiss
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
- Emory Antibiotic Resistance Center; Atlanta, Georgia, 30322, USA
| | | | | | - Colleen S. Kraft
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
- Emory Antibiotic Resistance Center; Atlanta, Georgia, 30322, USA
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine; Atlanta, Georgia, 30322, USA
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Venkateswaran P, Vasudevan S, David H, Shaktivel A, Shanmugam K, Neelakantan P, Solomon AP. Revisiting ESKAPE Pathogens: virulence, resistance, and combating strategies focusing on quorum sensing. Front Cell Infect Microbiol 2023; 13:1159798. [PMID: 37457962 PMCID: PMC10339816 DOI: 10.3389/fcimb.2023.1159798] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 06/08/2023] [Indexed: 07/18/2023] Open
Abstract
The human-bacterial association is long-known and well-established in terms of both augmentations of human health and attenuation. However, the growing incidents of nosocomial infections caused by the ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter sp.) call for a much deeper understanding of these organisms. Adopting a holistic approach that includes the science of infection and the recent advancements in preventing and treating infections is imperative in designing novel intervention strategies against ESKAPE pathogens. In this regard, this review captures the ingenious strategies commissioned by these master players, which are teamed up against the defenses of the human team, that are equally, if not more, versatile and potent through an analogy. We have taken a basketball match as our analogy, dividing the human and bacterial species into two teams playing with the ball of health. Through this analogy, we make the concept of infectious biology more accessible.
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Affiliation(s)
- Parvathy Venkateswaran
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Sahana Vasudevan
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Helma David
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Adityan Shaktivel
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Karthik Shanmugam
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Prasanna Neelakantan
- Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Adline Princy Solomon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
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Ganji N, Li B, Lee C, Pierro A. Necrotizing enterocolitis: recent advances in treatment with translational potential. Pediatr Surg Int 2023; 39:205. [PMID: 37247104 DOI: 10.1007/s00383-023-05476-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/19/2023] [Indexed: 05/30/2023]
Abstract
Necrotizing enterocolitis (NEC) is one of the most prevalent and devastating gastrointestinal disorders in neonates. Despite advances in neonatal care, the incidence and mortality due to NEC remain high, highlighting the need to devise novel treatments for this disease. There have been a number of recent advancements in therapeutic approaches for the treatment of NEC; these involve remote ischemic conditioning (RIC), stem cell therapy, breast milk components (human milk oligosaccharides, exosomes, lactoferrin), fecal microbiota transplantation, and immunotherapy. This review summarizes the most recent advances in NEC treatment currently underway as well as their applicability and associated challenges and limitations, with the aim to provide new insight into the paradigm of care for NEC worldwide.
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Affiliation(s)
- Niloofar Ganji
- Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
- Translational Medicine, Hospital for Sick Children Research Institute, University of Toronto, Toronto, ON, Canada
| | - Bo Li
- Translational Medicine, Hospital for Sick Children Research Institute, University of Toronto, Toronto, ON, Canada
| | - Carol Lee
- Translational Medicine, Hospital for Sick Children Research Institute, University of Toronto, Toronto, ON, Canada
| | - Agostino Pierro
- Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada.
- Translational Medicine, Hospital for Sick Children Research Institute, University of Toronto, Toronto, ON, Canada.
- Division of General and Thoracic Surgery, The Hospital for Sick Children, University of Toronto, 1526-555 University Ave, Toronto, ON, M5G 1X8, Canada.
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Matzaras R, Nikopoulou A, Protonotariou E, Christaki E. Gut Microbiota Modulation and Prevention of Dysbiosis as an Alternative Approach to Antimicrobial Resistance: A Narrative Review. THE YALE JOURNAL OF BIOLOGY AND MEDICINE 2022; 95:479-494. [PMID: 36568836 PMCID: PMC9765331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background: The importance of gut microbiota in human health is being increasingly studied. Imbalances in gut microbiota have been associated with infection, inflammation, and obesity. Antibiotic use is the most common and significant cause of major alterations in the composition and function of the gut microbiota and can result in colonization with multidrug-resistant bacteria. Methods: The purpose of this review is to present existing evidence on how microbiota modulation and prevention of gut dysbiosis can serve as tools to combat antimicrobial resistance. Results: While the spread of antibiotic-resistant pathogens requires antibiotics with novel mechanisms of action, the number of newly discovered antimicrobial classes remains very low. For this reason, the application of alternative modalities to combat antimicrobial resistance is necessary. Diet, probiotics/prebiotics, selective oropharyngeal or digestive decontamination, and especially fecal microbiota transplantation (FMT) are under investigation with FMT being the most studied. But, as prevention is better than cure, the implementation of antimicrobial stewardship programs and strict infection control measures along with newly developed chelating agents could also play a crucial role in decreasing colonization with multidrug resistant organisms. Conclusion: New alternative tools to fight antimicrobial resistance via gut microbiota modulation, seem to be effective and should remain the focus of further research and development.
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Affiliation(s)
- Rafail Matzaras
- Infectious Diseases Unit, Department of Medicine,
University General Hospital of Ioannina, University of Ioannina, Ioannina,
Greece
| | - Anna Nikopoulou
- Department of Internal Medicine, G. Papanikolaou
General Hospital of Thessaloniki, Thessaloniki, Greece
| | - Efthimia Protonotariou
- Department of Microbiology, AHEPA University Hospital,
Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Eirini Christaki
- Infectious Diseases Unit, Department of Medicine,
University General Hospital of Ioannina, University of Ioannina, Ioannina,
Greece,To whom all correspondence should be addressed:
Eirini Christaki, University General Hospital of Ioannina, St. Niarchou,
Ioannina, Greece; ; ORCID:
https://www.orcid.org/0000-0002-8152-6367
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Hoellinger B, Deboscker S, Danion F, Lavigne T, Severac F, Ruch Y, Ursenbach A, Lefebvre N, Boyer P, Hansmann Y. Incidence and Time-to-Onset of Carbapenemase-Producing Enterobacterales (CPE) Infections in CPE Carriers: a Retrospective Cohort Study. Microbiol Spectr 2022; 10:e0186822. [PMID: 36321906 PMCID: PMC9769894 DOI: 10.1128/spectrum.01868-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 10/02/2022] [Indexed: 12/24/2022] Open
Abstract
This study aimed to assess the proportion of carbapenemase-producing Enterobacterales (CPE) infections among all infectious episodes in CPE carriers, compare the time-to-onset of CPE infections with that of other infections, assess the mortality of patients with CPE infections, and identify risk factors for CPE infections in CPE carriers. A retrospective cohort study was performed over a 10-year period in our University Hospital, and 274 CPE carriers were identified. All infectious episodes within the first 6 months following the diagnosis of CPE rectal carriage were considered. Risk factor analysis for CPE infections in CPE carriers was performed by univariate and multivariate analyses. This study revealed an incidence of 24.1% (66/274) of CPE infection within 6 months of CPE carriage diagnosis. The 28-day all-cause mortality due to CPE infections was 25.7%. CPE infections represented 52.6% (70/133) of all infectious episodes in CPE carriers in the first 6 months following CPE carriage detection, and these significantly occurred earlier than non-CPE infections, with a median time of 15 versus 51 days, respectively (P < 0.01). Based on the multivariate analysis, prior neurological disease was the only risk factor associated with CPE infections in CPE carriers. CPE infections have an early onset, accounting for a large proportion of infections in CPE carriers, and are associated with high mortality. IMPORTANCE Carbapenemase-producing Enterobacterales (CPE) infections are emerging infections and may represent a therapeutic challenge, while effective antibiotic therapy is likely to be delayed. We aimed to assess the proportion of CPE infections in CPE carriers and to identify risk factors of CPE infections among this population that could guide empirical antibiotic therapy. We showed that CPE infections are frequent in CPE carriers, have an early onset after CPE carriage diagnosis, and represent a significant proportion of all infectious episodes in CPE carriers. No significant risk factors for CPE infections could be identified. Overall, this study suggests that empirical antibiotic treatment covering CPE might be initiated in CPE carriers at least in the first month after its diagnosis and in severe infections due to the high frequency and early occurrence of CPE infections in these patients.
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Affiliation(s)
- B. Hoellinger
- Department of Infectious and Tropical Diseases, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - S. Deboscker
- Service d’Hygiène Hospitalière, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - F. Danion
- Department of Infectious and Tropical Diseases, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - T. Lavigne
- Service d’Hygiène Hospitalière, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Service de Réanimation Médicale de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - F. Severac
- Groupe Méthodes en Recherche Clinique (GMRC), Hôpital Civil, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Y. Ruch
- Department of Infectious and Tropical Diseases, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - A. Ursenbach
- Department of Infectious and Tropical Diseases, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - N. Lefebvre
- Department of Infectious and Tropical Diseases, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - P. Boyer
- Department of Bacteriology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Y. Hansmann
- Department of Infectious and Tropical Diseases, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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10
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Alternatives Therapeutic Approaches to Conventional Antibiotics: Advantages, Limitations and Potential Application in Medicine. Antibiotics (Basel) 2022; 11:antibiotics11121826. [PMID: 36551487 PMCID: PMC9774722 DOI: 10.3390/antibiotics11121826] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/10/2022] [Accepted: 10/12/2022] [Indexed: 12/23/2022] Open
Abstract
Resistance to antimicrobials and particularly multidrug resistance is one of the greatest challenges in the health system nowadays. The continual increase in the rates of antimicrobial resistance worldwide boosted by the ongoing COVID-19 pandemic poses a major public health threat. Different approaches have been employed to minimize the effect of resistance and control this threat, but the question still lingers as to their safety and efficiency. In this context, new anti-infectious approaches against multidrug resistance are being examined. Use of new antibiotics and their combination with new β-lactamase inhibitors, phage therapy, antimicrobial peptides, nanoparticles, and antisense antimicrobial therapeutics are considered as one such promising approach for overcoming bacterial resistance. In this review, we provide insights into these emerging alternative therapies that are currently being evaluated and which may be developed in the future to break the progression of antimicrobial resistance. We focus on their advantages and limitations and potential application in medicine. We further highlight the importance of the combination therapy approach, wherein two or more therapies are used in combination in order to more effectively combat infectious disease and increasing access to quality healthcare. These advances could give an alternate solution to overcome antimicrobial drug resistance. We eventually hope to provide useful information for clinicians who are seeking solutions to the problems caused by antimicrobial resistance.
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11
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Nigam M, Panwar AS, Singh RK. Orchestrating the fecal microbiota transplantation: Current technological advancements and potential biomedical application. FRONTIERS IN MEDICAL TECHNOLOGY 2022; 4:961569. [PMID: 36212607 PMCID: PMC9535080 DOI: 10.3389/fmedt.2022.961569] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 08/29/2022] [Indexed: 01/10/2023] Open
Abstract
Fecal microbiota transplantation (FMT) has been proved to be an effective treatment for gastrointestinal disorders caused due to microbial disbalance. Nowadays, this approach is being used to treat extragastrointestinal conditions like metabolic and neurological disorders, which are considered to have their provenance in microbial dysbiosis in the intestine. Even though case studies and clinical trials have demonstrated the potential of FMT in treating a variety of ailments, safety and ethical concerns must be answered before the technique is widely used to the community's overall benefit. From this perspective, it is not unexpected that techniques for altering gut microbiota may represent a form of medication whose potential has not yet been thoroughly addressed. This review intends to gather data on recent developments in FMT and its safety, constraints, and ethical considerations.
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Affiliation(s)
- Manisha Nigam
- Department of Biochemistry, School of Life Sciences, H.N.B. Garhwal University, Srinagar, India
- Correspondence: Manisha Nigam Rahul Kunwar Singh
| | - Abhaya Shikhar Panwar
- Department of Biochemistry, School of Life Sciences, H.N.B. Garhwal University, Srinagar, India
| | - Rahul Kunwar Singh
- Department of Microbiology, School of Life Sciences, H.N.B. Garhwal University, Srinagar, India
- Correspondence: Manisha Nigam Rahul Kunwar Singh
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12
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Schnizlein MK, Young VB. Capturing the environment of the Clostridioides difficile infection cycle. Nat Rev Gastroenterol Hepatol 2022; 19:508-520. [PMID: 35468953 DOI: 10.1038/s41575-022-00610-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/21/2022] [Indexed: 12/11/2022]
Abstract
Clostridioides difficile (formerly Clostridium difficile) infection is a substantial health and economic burden worldwide. Great strides have been made over the past several years in characterizing the physiology of C. difficile infection, particularly regarding how gut microorganisms and their host work together to provide colonization resistance. As mammalian hosts and their indigenous gut microbiota have co-evolved, they have formed a complex yet stable relationship that prevents invading microorganisms from establishing themselves. In this Review, we discuss the latest advances in our understanding of C. difficile physiology that have contributed to its success as a pathogen, including its versatile survival factors and ability to adapt to unique niches. Using discoveries regarding microorganism-host and microorganism-microorganism interactions that constitute colonization resistance, we place C. difficile within the fiercely competitive gut environment. A comprehensive understanding of these relationships is required to continue the development of precision medicine-based treatments for C. difficile infection.
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Affiliation(s)
- Matthew K Schnizlein
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Vincent B Young
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA.
- Department of Internal Medicine/Division of Infectious Diseases, University of Michigan Medical School, Ann Arbor, MI, USA.
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13
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Pérez-Nadales E, Cano Á, Recio M, Artacho MJ, Guzmán-Puche J, Doblas A, Vidal E, Natera C, Martínez-Martínez L, Torre-Cisneros J, Castón JJ. Randomised, double-blind, placebo-controlled, phase 2, superiority trial to demonstrate the effectiveness of faecal microbiota transplantation for selective intestinal decolonisation of patients colonised by carbapenemase-producing Klebsiella pneumoniae (KAPEDIS). BMJ Open 2022; 12:e058124. [PMID: 35387830 PMCID: PMC8987760 DOI: 10.1136/bmjopen-2021-058124] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
INTRODUCTION Infections caused by carbapenemase-producing Enterobacterales are frequent and associated with high rates of mortality. Intestinal carriers are at increased risk of infection by these microorganisms. Decolonisation strategies with antibiotics have not obtained conclusive results. Faecal microbiota transplantation (FMT) could be an effective and safe strategy to decolonise intestinal carriers of KPC-producing Klebsiella pneumoniae (KPC-Kp) but this hypothesis needs evaluation in appropriate clinical trials. METHODS AND ANALYSIS The KAPEDIS trial is a single-centre, randomised, double-blind, placebo-controlled, phase 2, superiority clinical trial of FMT for eradication of intestinal colonisation by KPC-Kp. One hundred and twenty patients with rectal colonisation by KPC-Kp will be randomised 1:1 to receive encapsulated lyophilised FMT or placebo. The primary outcome is KPC-Kp eradication at 30 days. Secondary outcomes are: (1) frequency of adverse events; (2) changes in KPC-Kp relative load within the intestinal microbiota at 7, 30 and 90 days, estimated by real-time quantitative PCR analysis of rectal swab samples and (3) rates of persistent eradication, KPC-Kp infection and crude mortality at 90 days. Participants will be monitored for adverse effects throughout the intervention. ETHICS AND DISSEMINATION Ethical approval was obtained from Reina Sofía University Hospital Institutional Review Board (approval reference number: 2019-003808-13). Trial results will be published in peer-reviewed journals and disseminated at national and international conferences. TRIAL REGISTRATION NUMBER NCT04760665.
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Grants
- Plan Estatal de I+D+I 2013-2016, co-financed by the ISCIII-Subdirección General de Evaluación y Fomento de la Investigación and the Fondo Europeo de Desarrollo Regional (FEDER)
- Grant to EPN from Consejería de Salud y Familias, Junta de Andalucía
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain.
- Plan Nacional de I+D+i 2013‐2016 and Instituto de Salud Carlos III (ISCIII), Subdirección General de Redes y Centros de Investigación Cooperativa, Ministerio de Ciencia, Innovación y Universidades, Spanish Network for Research in Infectious Diseases (RD16/0016/0008) ‐ co‐financed by European Development Regional Fund “A way to achieve Europe”, Operative program Intelligent Growth 2014‐2020.
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Affiliation(s)
- Elena Pérez-Nadales
- Instituto Maimónides de Investigación Biomédica de Córdoba/Hospital Universitario Reina Sofía/Universidad de Córdoba (IMIBIC/HURS/UCO), Cordoba, Spain
- Red Española de Investigación en Patologías Infecciosas (REIPI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Departamento de Química Agrícola, Edafología y Microbiología, Universidad de Cordoba, Cordoba, Spain
- CIBER de Enfermedades Infecciosas-CIBERINFEC (CB21/13/00049)), Instituto de Salud Carlos III, Madrid, Spain
| | - Ángela Cano
- Instituto Maimónides de Investigación Biomédica de Córdoba/Hospital Universitario Reina Sofía/Universidad de Córdoba (IMIBIC/HURS/UCO), Cordoba, Spain
- Red Española de Investigación en Patologías Infecciosas (REIPI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- CIBER de Enfermedades Infecciosas-CIBERINFEC (CB21/13/00049)), Instituto de Salud Carlos III, Madrid, Spain
- Unidad de Gestión Clínica de Enfermedades Infecciosas, Hospital Universitario Reina Sofía de Córdoba, Cordoba, Spain
| | - Manuel Recio
- Instituto Maimónides de Investigación Biomédica de Córdoba/Hospital Universitario Reina Sofía/Universidad de Córdoba (IMIBIC/HURS/UCO), Cordoba, Spain
- Red Española de Investigación en Patologías Infecciosas (REIPI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Unidad de Gestión Clínica de Enfermedades Infecciosas, Hospital Universitario Reina Sofía de Córdoba, Cordoba, Spain
| | - María José Artacho
- Unidad de Gestión Clínica de Microbiología, Hospital Santa Ana, Motril, Granada, Spain
| | - Julia Guzmán-Puche
- Instituto Maimónides de Investigación Biomédica de Córdoba/Hospital Universitario Reina Sofía/Universidad de Córdoba (IMIBIC/HURS/UCO), Cordoba, Spain
- Red Española de Investigación en Patologías Infecciosas (REIPI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- CIBER de Enfermedades Infecciosas-CIBERINFEC (CB21/13/00049)), Instituto de Salud Carlos III, Madrid, Spain
- Unidad de Gestión Clínica de Microbiología, Hospital Universitario Reina Sofía de Córdoba, Córdoba, Spain
| | - Antonio Doblas
- Unidad de Gestión Clínica de Enfermedades Infecciosas, Hospital Universitario Reina Sofía de Córdoba, Cordoba, Spain
| | - Elisa Vidal
- Instituto Maimónides de Investigación Biomédica de Córdoba/Hospital Universitario Reina Sofía/Universidad de Córdoba (IMIBIC/HURS/UCO), Cordoba, Spain
- Red Española de Investigación en Patologías Infecciosas (REIPI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- CIBER de Enfermedades Infecciosas-CIBERINFEC (CB21/13/00049)), Instituto de Salud Carlos III, Madrid, Spain
- Unidad de Gestión Clínica de Enfermedades Infecciosas, Hospital Universitario Reina Sofía de Córdoba, Cordoba, Spain
| | - Clara Natera
- Instituto Maimónides de Investigación Biomédica de Córdoba/Hospital Universitario Reina Sofía/Universidad de Córdoba (IMIBIC/HURS/UCO), Cordoba, Spain
- Red Española de Investigación en Patologías Infecciosas (REIPI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Unidad de Gestión Clínica de Enfermedades Infecciosas, Hospital Universitario Reina Sofía de Córdoba, Cordoba, Spain
| | - Luis Martínez-Martínez
- Instituto Maimónides de Investigación Biomédica de Córdoba/Hospital Universitario Reina Sofía/Universidad de Córdoba (IMIBIC/HURS/UCO), Cordoba, Spain
- Red Española de Investigación en Patologías Infecciosas (REIPI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Departamento de Química Agrícola, Edafología y Microbiología, Universidad de Cordoba, Cordoba, Spain
- CIBER de Enfermedades Infecciosas-CIBERINFEC (CB21/13/00049)), Instituto de Salud Carlos III, Madrid, Spain
- Unidad de Gestión Clínica de Microbiología, Hospital Universitario Reina Sofía de Córdoba, Córdoba, Spain
| | - Julian Torre-Cisneros
- Instituto Maimónides de Investigación Biomédica de Córdoba/Hospital Universitario Reina Sofía/Universidad de Córdoba (IMIBIC/HURS/UCO), Cordoba, Spain
- Red Española de Investigación en Patologías Infecciosas (REIPI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- CIBER de Enfermedades Infecciosas-CIBERINFEC (CB21/13/00049)), Instituto de Salud Carlos III, Madrid, Spain
- Unidad de Gestión Clínica de Enfermedades Infecciosas, Hospital Universitario Reina Sofía de Córdoba, Cordoba, Spain
- Departamento de Ciencias Médicas y Quirúrgicas, Universidad de Córdoba, Cordoba, Spain
| | - Juan José Castón
- Instituto Maimónides de Investigación Biomédica de Córdoba/Hospital Universitario Reina Sofía/Universidad de Córdoba (IMIBIC/HURS/UCO), Cordoba, Spain
- Red Española de Investigación en Patologías Infecciosas (REIPI), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- CIBER de Enfermedades Infecciosas-CIBERINFEC (CB21/13/00049)), Instituto de Salud Carlos III, Madrid, Spain
- Unidad de Gestión Clínica de Enfermedades Infecciosas, Hospital Universitario Reina Sofía de Córdoba, Cordoba, Spain
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14
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Chiang D, Dingle TC, Belga S, Kabbani D, Bhanji RA, Walter J, Abraldes JG, Cervera C. Association between Gut Colonization of Vancomycin-resistant Enterococci and Liver Transplant Outcomes. Transpl Infect Dis 2022; 24:e13821. [PMID: 35247208 DOI: 10.1111/tid.13821] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/11/2022] [Accepted: 02/20/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Vancomycin-resistant enterococci (VRE) colonization is common in liver transplant recipients and has been associated with worse post-transplant outcomes. METHODS We conducted a retrospective cohort study at the University of Alberta Hospital including patients who underwent a liver transplant between September 2014 and December 2017. RESULTS Of 343 patients, 68 (19.8%) had pre-transplant VRE colonization and 27 (27/275, 9.8%) acquired VRE post-transplant, 67% were males and the median age was 56.5 years. VRE colonized patients at baseline had higher MELD scores and required longer post-transplant hospitalization. VRE colonization was associated with increased risk of early acute kidney injury (AKI) (64% vs 52%, p = 0. 044), clinically significant bacterial/fungal infection (29% vs 17%, p = 0. 012) and invasive VRE infection (5% vs 1%, p = 0. 017). Mortality at 2-years was 13% in VRE-colonized versus 7% in non-colonized (p = 0.085). On multivariate analysis, VRE colonization increased the risk of post-transplant AKI (HR 1.504, 95% CI: 1.077-2.100, p = 0.017) and clinically significant bacterial or fungal infection at 6 months (HR 2.038, 95%CI: 1.222-3.399, p = 0.006), and was associated with non-significant trend towards increased risk of mortality at 2-years post-transplant (HR 1.974 95% CI 0.890-4.378; p = 0.094). CONCLUSIONS VRE colonization in liver transplant patients is associated with increased risk of early AKI, clinically significant infections, and a trend towards increased mortality at 2-years. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Diana Chiang
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Tanis C Dingle
- Department of Laboratory Medicine & Pathology, University of Alberta, Edmonton, Alberta, Canada.,Alberta Precision Laboratories, Edmonton, Alberta, Canada
| | - Sara Belga
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada.,Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Dima Kabbani
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Rahima A Bhanji
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Jens Walter
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.,Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.,Department of Medicine and APC Microbiome Ireland, University College Cork, Cork, Ireland.,School of Microbiology, University College Cork, Cork, Ireland
| | - Juan G Abraldes
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Carlos Cervera
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
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15
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Dharmaratne P, Rahman N, Leung A, Ip M. Is there a role of faecal microbiota transplantation in reducing antibiotic resistance burden in gut? A systematic review and Meta-analysis. Ann Med 2021; 53:662-681. [PMID: 34170204 PMCID: PMC8238059 DOI: 10.1080/07853890.2021.1927170] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/03/2021] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES The aim of current systematic review and meta-analysis is to provide insight into the therapeutic efficacy of fecal microbiota transplantation (FMT) for the decolonization of antimicrobial-resistant (AMR) bacteria from the gut. METHODS The protocol for this Systematic Review was prospectively registered with PROSPERO (CRD42020203634). Four databases (EMBASE, MEDLINE, SCOPUS, and WEB of SCIENCE) were consulted up until September 2020. A total of fourteen studies [in vivo (n = 2), case reports (n = 7), case series without control arm (n = 3), randomized clinical trials (RCT, n = 2)], were reviewed. Data were synthesized narratively for the case reports, along with a proportion meta-analysis for the case series studies (n = 102 subjects) without a control arm followed by another meta-analysis for case series studies with a defined control arm (n = 111 subjects) for their primary outcomes. RESULTS Overall, seven non-duplicate case reports (n = 9 participants) were narratively reviewed and found to have broad AMR remission events at the 1-month time point. Proportion meta-analysis of case series studies showed an overall 0.58 (95% CI: 0.42-0.74) AMR remission. Additionally, a significant difference in AMR remission was observed in FMT vs treatment naïve (RR = 0.44; 95% CI: 0.20-0.99) and moderate heterogeneity (I2=65%). A subgroup analysis of RCTs (n = 2) revealed FMT with further benefits of AMR remission with low statistical heterogeneity (RR = 0.37; 95% CI: 0.18-0.79; I2 =23%). CONCLUSION More rigorous RCTs with larger sample size and standardized protocols on FMTs for gut decolonization of AMR organisms are warranted.KEY MESSAGEExisting studies in this subject are limited and of low quality with moderate heterogeneity, and do not allow definitive conclusions to be drawn.More rigorous RCTs with larger sample size and standardized protocols on FMTs for gut decolonization of AMR organisms are warranted.
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Affiliation(s)
- Priyanga Dharmaratne
- Faculty of Medicine, Department of Microbiology, The Chinese University of Hong Kong, Prince of Wales Hospital, Sha Tin, China
| | - Nannur Rahman
- Faculty of Medicine, Department of Microbiology, The Chinese University of Hong Kong, Prince of Wales Hospital, Sha Tin, China
| | - Anthony Leung
- Faculty of Medicine, Department of Microbiology, The Chinese University of Hong Kong, Prince of Wales Hospital, Sha Tin, China
| | - Margaret Ip
- Faculty of Medicine, Department of Microbiology, The Chinese University of Hong Kong, Prince of Wales Hospital, Sha Tin, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
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16
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Innes AJ, Mullish BH, Ghani R, Szydlo RM, Apperley JF, Olavarria E, Palanicawandar R, Kanfer EJ, Milojkovic D, McDonald JAK, Brannigan ET, Thursz MR, Williams HRT, Davies FJ, Marchesi JR, Pavlů J. Fecal Microbiota Transplant Mitigates Adverse Outcomes Seen in Patients Colonized With Multidrug-Resistant Organisms Undergoing Allogeneic Hematopoietic Cell Transplantation. Front Cell Infect Microbiol 2021; 11:684659. [PMID: 34513724 PMCID: PMC8430254 DOI: 10.3389/fcimb.2021.684659] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 08/12/2021] [Indexed: 12/28/2022] Open
Abstract
The gut microbiome can be adversely affected by chemotherapy and antibiotics prior to hematopoietic cell transplantation (HCT). This affects graft success and increases susceptibility to multidrug-resistant organism (MDRO) colonization and infection. We performed an initial retrospective analysis of our use of fecal microbiota transplantation (FMT) from healthy donors as therapy for MDRO-colonized patients with hematological malignancy. FMT was performed on eight MDRO-colonized patients pre-HCT (FMT-MDRO group), and outcomes compared with 11 MDRO colonized HCT patients from the same period. At 12 months, survival was significantly higher in the FMT-MDRO group (70% versus 36% p = 0.044). Post-HCT, fewer FMT-MDRO patients required intensive care (0% versus 46%, P = 0.045) or experienced fever (0.29 versus 0.11 days, P = 0.027). Intestinal MDRO decolonization occurred in 25% of FMT-MDRO patients versus 11% non-FMT MDRO patients. Despite the significant differences and statistically comparable patient/transplant characteristics, as the sample size was small, a matched-pair analysis between both groups to non-MDRO colonized control cohorts (2:1 matching) was performed. At 12 months, the MDRO group who did not have an FMT had significantly lower survival (36.4% versus 61.9% respectively, p=0.012), and higher non relapse mortality (NRM; 60.2% versus 16.7% respectively, p=0.009) than their paired non-MDRO-colonized cohort. Conversely, there was no difference in survival (70% versus 43.4%, p=0.14) or NRM (12.5% versus 31.2% respectively, p=0.24) between the FMT-MDRO group and their paired non-MDRO cohort. Collectively, these data suggest that negative clinical outcomes, including mortality associated with MDRO colonization, may be ameliorated by pre-HCT FMT, even in the absence of intestinal MDRO decolonization. Further work is needed to explore this observed benefit.
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Affiliation(s)
- Andrew J Innes
- Centre for Haematology, Imperial College London at Hammersmith Hospital, London, United Kingdom
| | - Benjamin H Mullish
- Division of Digestive Diseases, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Rohma Ghani
- Division of Digestive Diseases, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Richard M Szydlo
- Centre for Haematology, Imperial College London at Hammersmith Hospital, London, United Kingdom
| | - Jane F Apperley
- Centre for Haematology, Imperial College London at Hammersmith Hospital, London, United Kingdom
| | - Eduardo Olavarria
- Centre for Haematology, Imperial College London at Hammersmith Hospital, London, United Kingdom
| | - Renuka Palanicawandar
- Centre for Haematology, Imperial College London at Hammersmith Hospital, London, United Kingdom
| | - Edward J Kanfer
- Centre for Haematology, Imperial College London at Hammersmith Hospital, London, United Kingdom
| | - Dragana Milojkovic
- Centre for Haematology, Imperial College London at Hammersmith Hospital, London, United Kingdom
| | - Julie A K McDonald
- Medical Research Council (MRC) Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
| | - Eimear T Brannigan
- National Institute for Health Research Health Protection Research Unit in Healthcare Associated Infections and Antimicrobial Resistance, Imperial College London, London, United Kingdom
| | - Mark R Thursz
- Division of Digestive Diseases, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Horace R T Williams
- Division of Digestive Diseases, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Frances J Davies
- Medical Research Council (MRC) Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
| | - Julian R Marchesi
- Division of Digestive Diseases, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Jiří Pavlů
- Centre for Haematology, Imperial College London at Hammersmith Hospital, London, United Kingdom
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Woodworth MH, Kwon JH, Kraft CS. An Ounce of Prevention Is Equivalent to How Much Decolonization Exactly? Clin Infect Dis 2021; 72:e924. [PMID: 33029623 DOI: 10.1093/cid/ciaa1524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Michael H Woodworth
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Jennie H Kwon
- Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Colleen S Kraft
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA.,Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
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18
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Babiker A, Ingersoll JM, Adelman MW, Webster AS, Broder KJ, Stittleburg V, Waggoner JJ, Kraft CS, Woodworth MH. Validation of High-Sensitivity Severe Acute Respiratory Syndrome Coronavirus 2 Testing for Stool-Toward the New Normal for Fecal Microbiota Transplantation. Clin Transl Gastroenterol 2021; 12:e00363. [PMID: 34106090 PMCID: PMC8189625 DOI: 10.14309/ctg.0000000000000363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/08/2021] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Mounting evidence demonstrates potential for fecal-oral transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The US Food and Drug Administration now requires SARS-CoV-2 testing of potential feces donors before the use of stool manufactured for fecal microbiota transplantation. We sought to develop and validate a high-sensitivity SARS-CoV-2 reverse transcriptase polymerase chain reaction (RT-PCR) procedure for testing stool specimens. METHODS A modified extraction method was used with an RT-PCR assay adapted from the Centers for Disease Control and Prevention PCR protocol for respiratory specimens. Contrived specimens were created using pre-COVID-19 banked stool specimens and spiking in known concentrations of SARS-CoV-2-specific nucleic acid. The highest transcript concentration at which 2/2 or 1/2 SARS-CoV-2 targets were detected in 9/10 replicates was defined as the dual-target limit and single-target limit of detection, respectively. The clinical performance of the assay was evaluated with stool samples collected from 17 nasopharyngeal swab RT-PCR-positive patients and 14 nasopharyngeal RT-PCR-negative patients. RESULTS The dual-target and single-target limit of detection were 56 copies/μL and 3 copies/μL, respectively. SARS-CoV-2 was detected at concentrations as low as 0.6 copies/μL. Clinical stool samples from known COVID-19-positive patients demonstrated the detection of SARS-CoV-2 in stool up to 29 days from symptom onset with a high agreement with nasopharyngeal swab tests (kappa statistic of 0.95, P value < 0.001). DISCUSSION The described RT-PCR test is a sensitive and flexible approach for the detection of SARS-CoV-2 in stool specimens. We propose an integrated screening approach that incorporates this stool test to support continuation of fecal microbiota transplantation programs.
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Affiliation(s)
- Ahmed Babiker
- Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Jessica M. Ingersoll
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Max W. Adelman
- Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Andrew S. Webster
- Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Kari J. Broder
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Victoria Stittleburg
- Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Jesse J. Waggoner
- Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Colleen S. Kraft
- Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Michael H. Woodworth
- Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
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19
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Nutritional Status and the Critically Ill Patient: Gut Microbiota and Immuno-Nutrition in I.C.U. at the Time of SARS-COV 2 Pandemic. GASTROENTEROLOGY INSIGHTS 2021. [DOI: 10.3390/gastroent12020022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background: Gut microbiota is a complex ecosystem of bacteria, viruses, archaea, protozoa and yeasts in our intestine. It has several functions, including maintaining human body equilibrium. Microbial “dysbiosis” can be responsible for outbreak of local and systemic infections, especially in critically ill patients. Methods: to build a narrative review, we performed a Pubmed, Medline and EMBASE search for English language papers, reviews, meta-analyses, case series and randomized controlled trials (RCTs) by keywords and their associations: critically ill patient; nutrition; gut microbiota; probiotics; gut virome; SARS-COV 2. Results: Over the antibiotic-based “selective decontamination”, potentially responsible for drug-resistant microorganisms development, there is growing interest of scientists and the pharmaceutical industry for pre-, probiotics and their associations as safe and reliable remedies restoring gut microbial “eubiosis”. Very first encouraging evidences link different gut microbiota profiles with SARS-COV 2 disease stage and gravity. Thus, there is frame for a probiotic therapeutic approach of COVID-19. Conclusions: gut microbiota remodulation seems to be a promising and safe therapeutic approach to prevent local and systemic multi-resistant bug infections in the intensive care unit (ICU) patients. This approach deserves more and more attention at the time of SARS-COV 2 pandemic.
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20
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mSphere of Influence: Whole-Genome Sequencing, a Vital Tool for the Interruption of Nosocomial Transmission. mSphere 2021; 6:6/2/e00230-21. [PMID: 33910995 PMCID: PMC8092139 DOI: 10.1128/msphere.00230-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Ahmed Babiker’s work focuses on the clinical and genomic epidemiology of multidrug-resistant health care-associated pathogens and other high-consequence pathogens. In this mSphere of Influence article, he reflects on how the paper “Tracking a Hospital Outbreak of Carbapenem-Resistant Klebsiella pneumoniae with Whole-Genome Sequencing” by author Evan S. Ahmed Babiker’s work focuses on the clinical and genomic epidemiology of multidrug-resistant health care-associated pathogens and other high-consequence pathogens. In this mSphere of Influence article, he reflects on how the paper “Tracking a Hospital Outbreak of Carbapenem-Resistant Klebsiella pneumoniae with Whole-Genome Sequencing” by Evan S. Snitkin et al. (Sci Transl Med 4:148ra116, 2012, https://doi.org/10.1126/scitranslmed.3004129) impacted his thinking on the use of whole-genome sequencing for nosocomial transmission investigation.
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21
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Ghani R, Mullish BH, McDonald JAK, Ghazy A, Williams HRT, Brannigan ET, Mookerjee S, Satta G, Gilchrist M, Duncan N, Corbett R, Innes AJ, Pavlů J, Thursz MR, Davies F, Marchesi JR. Disease Prevention Not Decolonization: A Model for Fecal Microbiota Transplantation in Patients Colonized With Multidrug-resistant Organisms. Clin Infect Dis 2021; 72:1444-1447. [PMID: 32681643 PMCID: PMC8075030 DOI: 10.1093/cid/ciaa948] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 08/04/2020] [Indexed: 12/24/2022] Open
Abstract
Fecal microbiota transplantation (FMT) yields variable intestinal decolonization results for multidrug-resistant organisms (MDROs). This study showed significant reductions in antibiotic duration, bacteremia, and length of stay in 20 patients colonized/infected with MDRO receiving FMT (compared with pre-FMT history, and a matched group not receiving FMT), despite modest decolonization rates.
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Affiliation(s)
- Rohma Ghani
- Division of Digestive Diseases, Department of Metabolism, Digestion, and Reproduction, Imperial College London, London, United Kingdom
- Department of Infection, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Benjamin H Mullish
- Division of Digestive Diseases, Department of Metabolism, Digestion, and Reproduction, Imperial College London, London, United Kingdom
- Department of Gastroenterology and Hepatology, St Mary’s Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Julie A K McDonald
- Division of Digestive Diseases, Department of Metabolism, Digestion, and Reproduction, Imperial College London, London, United Kingdom
- MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
| | - Anan Ghazy
- Department of Infection, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Horace R T Williams
- Division of Digestive Diseases, Department of Metabolism, Digestion, and Reproduction, Imperial College London, London, United Kingdom
- Department of Gastroenterology and Hepatology, St Mary’s Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Eimear T Brannigan
- Department of Infection, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Siddharth Mookerjee
- Department of Infection, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Giovanni Satta
- Department of Infection, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Mark Gilchrist
- Department of Infection, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Neill Duncan
- Department of Renal Medicine, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Richard Corbett
- Department of Renal Medicine, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Andrew J Innes
- Centre for Haematology, Imperial College London, and Hammersmith Hospital, Imperial College London NHS Trust, London, United Kingdom
| | - Jiří Pavlů
- Centre for Haematology, Imperial College London, and Hammersmith Hospital, Imperial College London NHS Trust, London, United Kingdom
| | - Mark R Thursz
- Division of Digestive Diseases, Department of Metabolism, Digestion, and Reproduction, Imperial College London, London, United Kingdom
- Department of Gastroenterology and Hepatology, St Mary’s Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Frances Davies
- Department of Infection, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Julian R Marchesi
- Division of Digestive Diseases, Department of Metabolism, Digestion, and Reproduction, Imperial College London, London, United Kingdom
- School of Biosciences, Cardiff University, Cardiff, United Kingdom
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22
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Alternatives to Antibiotics: A Symposium on the Challenges and Solutions for Animal Health and Production. Antibiotics (Basel) 2021; 10:antibiotics10050471. [PMID: 33918995 PMCID: PMC8142984 DOI: 10.3390/antibiotics10050471] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/13/2021] [Accepted: 04/19/2021] [Indexed: 12/17/2022] Open
Abstract
Antibiotics have improved the length and quality of life of people worldwide and have had an immeasurable influence on agricultural animal health and the efficiency of animal production over the last 60 years. The increased affordability of animal protein for a greater proportion of the global population, in which antibiotic use has played a crucial part, has resulted in a substantial improvement in human quality of life. However, these benefits have come with major unintended consequences, including antibiotic resistance. Despite the inherent benefits of restricting antibiotic use in animal production, antibiotics remain essential to ensuring animal health, necessitating the development of novel approaches to replace the prophylactic and growth-promoting benefits of antibiotics. The third International Symposium on “Alternatives to Antibiotics: Challenges and Solutions in Animal Health and Production” in Bangkok, Thailand was organized by the USDA Agricultural Research Service, Faculty of Veterinary Science, Chulalongkorn University and Department of Livestock Development-Thailand Ministry of Agriculture and Cooperative; supported by OIE World Organization for Animal Health; and attended by more than 500 scientists from academia, industry, and government from 32 nations across 6 continents. The focus of the symposium was on ensuring human and animal health, food safety, and improving food animal production efficiency as well as quality. Attendees explored six subject areas in detail through scientific presentations and panel discussions with experts, and the major conclusions were as follows: (1) defining the mechanisms of action of antibiotic alternatives is paramount to enable their effective use, whether they are used for prevention, treatment, or to enhance health and production; (2) there is a need to integrate nutrition, health, and disease research, and host genetics needs to be considered in this regard; (3) a combination of alternatives to antibiotics may need to be considered to achieve optimum health and disease management in different animal production systems; (4) hypothesis-driven field trials with proper controls are needed to validate the safety, efficacy, and return of investment (ROI) of antibiotic alternatives.
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23
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Aldana M, Robeva R. New Challenges in Systems Biology: Understanding the Holobiont. Front Physiol 2021; 12:662878. [PMID: 33841191 PMCID: PMC8033030 DOI: 10.3389/fphys.2021.662878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 02/22/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Maximino Aldana
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, México, Mexico
- Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, México, Mexico
| | - Raina Robeva
- Department of Mathematics, Randolph-Macon College, Ashland, VA, United States
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24
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D. Goldenberg S, Merrick B. The role of faecal microbiota transplantation: looking beyond Clostridioides difficile infection. Ther Adv Infect Dis 2021; 8:2049936120981526. [PMID: 33614028 PMCID: PMC7841662 DOI: 10.1177/2049936120981526] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 11/16/2020] [Indexed: 12/17/2022] Open
Abstract
Faecal microbiota transplantation (FMT) is the transfer of screened and minimally processed faecal material from a 'healthy' donor to 'diseased' recipient. It has an established role, and is recommended as a therapeutic strategy, in the management of recurrent Clostridioides difficile infection (CDI). Recognition that gut dysbiosis is associated with, and may contribute to, numerous disease states has led to interest in exploiting FMT to 'correct' this microbial imbalance. Conditions for which it is proposed to be beneficial include inflammatory bowel disease, irritable bowel syndrome, liver disease and hepatic encephalopathy, neuropsychiatric conditions such as depression and anxiety, systemic inflammatory states like sepsis, and even coronavirus disease 2019. To understand what role, if any, FMT may play in the management of these conditions, it is important to consider the potential risks and benefits of the therapy. Regardless, there are several barriers to its more widespread adoption, which include incompletely understood mechanism of action (especially outside of CDI), inability to standardise treatment, disagreement on its active ingredients and how it should be regulated, and lack of long-term outcome and safety data. Whilst the transfer of faecal material from one individual to another to treat ailments or improve health has a history dating back thousands of years, there are fewer than 10 randomised controlled trials supporting its use. Moving forward, it will be imperative to gather as much data from FMT donors and recipients over as long a timeframe as possible, and for trials to be conducted with rigorous methodology, including appropriate control groups, in order to best understand the utility of FMT for indications beyond CDI. This review discusses the history of FMT, its appreciable mechanisms of action with reference to CDI, indications for FMT with an emerging evidence base above and beyond CDI, and future perspectives on the field.
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Affiliation(s)
- Simon D. Goldenberg
- Centre for Clinical Infection & Diagnostics Research, King’s College London and Guy’s & St. Thomas’ NHS Foundation Trust, 5th floor, North Wing, St Thomas’ hospital, Westminster Bridge Road, London, SE1 7EH, UK
| | - Blair Merrick
- Centre for Clinical Infection & Diagnostics Research, King’s College London and Guy’s & St. Thomas’ NHS Foundation Trust, London, UK
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25
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Damhorst GL, Adelman MW, Woodworth MH, Kraft CS. Current Capabilities of Gut Microbiome-Based Diagnostics and the Promise of Clinical Application. J Infect Dis 2020; 223:S270-S275. [PMID: 33330938 DOI: 10.1093/infdis/jiaa689] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
There is increasing evidence for the importance of the gut microbiome in human health and disease. Traditional and modern technologies - from cell culture to next generation sequencing - have facilitated these advances in knowledge. Each of the tools employed in measuring the microbiome exhibits unique capabilities that may be leveraged for clinical diagnostics. However, much still needs to be done to standardize the language and metrics by which a microbiome is characterized. Here we review the capabilities of gut microbiome-based diagnostics, review selected examples, and discuss the outlook towards clinical application.
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Affiliation(s)
- Gregory L Damhorst
- Department of Medicine, Division of Infectious Diseases, Emory School of Medicine, Atlanta, Georgia, USA
| | - Max W Adelman
- Department of Medicine, Division of Infectious Diseases, Emory School of Medicine, Atlanta, Georgia, USA
| | - Michael H Woodworth
- Department of Medicine, Division of Infectious Diseases, Emory School of Medicine, Atlanta, Georgia, USA
| | - Colleen S Kraft
- Department of Medicine, Division of Infectious Diseases, Emory School of Medicine, Atlanta, Georgia, USA.,Department of Pathology and Laboratory Medicine; Department of Medicine; Division of Infectious Diseases, Emory University, Atlanta, Georgia, USA
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26
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Cheng YW, Fischer M. Fecal Microbiota Transplantation for Ulcerative Colitis. Are We Ready for Primetime? Gastroenterol Clin North Am 2020; 49:739-752. [PMID: 33121693 DOI: 10.1016/j.gtc.2020.08.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
"Patients with inflammatory bowel disease, including ulcerative colitis (UC) and Crohn disease, have altered gut microbiomes. The success of fecal microbiota transplantation (FMT) in the treatment of Clostridioides difficile infection, a disease that is also marked by dysbiosis, has spurred research in applying FMT to UC. So far, 3 randomized controlled trials have demonstrated benefit in mild to moderate UC disease course after FMT. However, important questions regarding optimal stool preparation, route, and frequency of administration, as well as characteristics of the stool donor and recipient still remain."
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Affiliation(s)
- Yao-Wen Cheng
- Division of Gastroenterology, Department of Medicine, University of California San Francisco, 513 Parnassus Avenue, Room S357, San Francisco, CA 94143, USA.
| | - Monika Fischer
- Division of Gastroenterology, Indiana University, 550 North University Boulevard, Suite 1634, Indianapolis, IN 46202, USA
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27
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Gut Microbiota Modulation: Implications for Infection Control and Antimicrobial Stewardship. Adv Ther 2020; 37:4054-4067. [PMID: 32767183 PMCID: PMC7412295 DOI: 10.1007/s12325-020-01458-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Indexed: 02/07/2023]
Abstract
The human microbiome comprises a complex ecosystem of microbial communities that exist within the human body, the largest and most diverse of which are found within the human intestine. It has been increasingly implicated in human health and diseases, demonstrably playing a critical role in influencing host immune response, protection against pathogen overgrowth, biosynthesis, and metabolism. As our understanding of the links between the gut microbiota with host immunity and infectious diseases deepens, there is a greater need to incorporate methods of modulating it as a means of therapy or infection prevention in daily clinical practice. Traditional antimicrobial stewardship principles have been evaluated to assess their impact on the gut microbiota diversity and the consequent repercussions, taking into consideration antibiotic pharmacokinetic and pharmacodynamic properties. Novel strategies of selective digestive decontamination and fecal microbiota transplantation to regulate the gut microbiota have also been tested in different conditions with variable results. This review seeks to provide an overview of the available literature on the modulation of the gut microbiota and its implications for infection control and antimicrobial stewardship. With increased understanding, gut microbiota profiling through metataxonomic analysis may provide further insight into modulating microbial communities in the context of infection prevention and control.
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28
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Schwartz DJ, Langdon AE, Dantas G. Understanding the impact of antibiotic perturbation on the human microbiome. Genome Med 2020; 12:82. [PMID: 32988391 PMCID: PMC7523053 DOI: 10.1186/s13073-020-00782-x] [Citation(s) in RCA: 134] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 09/11/2020] [Indexed: 02/08/2023] Open
Abstract
The human gut microbiome is a dynamic collection of bacteria, archaea, fungi, and viruses that performs essential functions for immune development, pathogen colonization resistance, and food metabolism. Perturbation of the gut microbiome's ecological balance, commonly by antibiotics, can cause and exacerbate diseases. To predict and successfully rescue such perturbations, first, we must understand the underlying taxonomic and functional dynamics of the microbiome as it changes throughout infancy, childhood, and adulthood. We offer an overview of the healthy gut bacterial architecture over these life stages and comment on vulnerability to short and long courses of antibiotics. Second, the resilience of the microbiome after antibiotic perturbation depends on key characteristics, such as the nature, timing, duration, and spectrum of a course of antibiotics, as well as microbiome modulatory factors such as age, travel, underlying illness, antibiotic resistance pattern, and diet. In this review, we discuss acute and chronic antibiotic perturbations to the microbiome and resistome in the context of microbiome stability and dynamics. We specifically discuss key taxonomic and resistance gene changes that accompany antibiotic treatment of neonates, children, and adults. Restoration of a healthy gut microbial ecosystem after routine antibiotics will require rationally managed exposure to specific antibiotics and microbes. To that end, we review the use of fecal microbiota transplantation and probiotics to direct recolonization of the gut ecosystem. We conclude with our perspectives on how best to assess, predict, and aid recovery of the microbiome after antibiotic perturbation.
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Affiliation(s)
- D. J. Schwartz
- Department of Pediatrics, Division of Infectious Diseases, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - A. E. Langdon
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Pathology and Immunology, Division of Laboratory and Genomic Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - G. Dantas
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Pathology and Immunology, Division of Laboratory and Genomic Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63110 USA
- Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
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29
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Kwak S, Choi J, Hink T, Reske KA, Blount K, Jones C, Bost MH, Sun X, Burnham CAD, Dubberke ER, Dantas G. Impact of investigational microbiota therapeutic RBX2660 on the gut microbiome and resistome revealed by a placebo-controlled clinical trial. MICROBIOME 2020; 8:125. [PMID: 32862830 PMCID: PMC7457799 DOI: 10.1186/s40168-020-00907-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Intestinal microbiota restoration can be achieved by complementing a subject's perturbed microbiota with that of a healthy donor. Recurrent Clostridioides difficile infection (rCDI) is one key application of such treatment. Another emerging application of interest is reducing antibiotic-resistant genes (ARGs) and organisms (AROs). In this study, we investigated fecal specimens from a multicenter, randomized, double-blind, placebo-controlled phase 2b study of microbiota-based investigational drug RBX2660. Patients were administered either placebo, 1 dose of RBX2660 and 1 placebo, or 2 doses of RBX2660 via enema and longitudinally tracked for changes in their microbiome and antibiotic resistome. RESULTS All patients exhibited significant recovery of gut microbiome diversity and a decrease of ARG relative abundance during the first 7 days post-treatment. However, the microbiome and resistome shifts toward average configurations from unperturbed individuals were more significant and longer-lasting in RBX2660 recipients compared to placebo. We quantified microbiome and resistome modification by RBX2660 using a novel "transplantation index" metric. We identified taxonomic and metabolic features distinguishing the baseline microbiome of non-transplanted patients and taxa specifically enriched during the process of transplantation. We elucidated the correlation between resistome and taxonomic transplantations and post-treatment dynamics of patient-specific and RBX2660-specific ARGs. Whole genome sequencing of AROs cultured from RBX2660 product and patient samples indicate ARO eradication in patients via RBX2660 administration, but also, to a lesser extent, introduction of RBX2660-derived AROs. CONCLUSIONS Through shotgun metagenomic sequencing, we elucidated the effects of RBX2660 in the microbiome and resistome. Antibiotic discontinuation alone resulted in significant recovery of gut microbial diversity and reduced ARG relative abundance, but RBX2660 administration more rapidly and completely changed the composition of patients' microbiome, resistome, and ARO colonization by transplanting RBX2660 microbiota into the recipients. Although ARGs and AROs were transmitted through RBX2660, the resistome post-RBX2660 more closely resembled that of the administered product-a proxy for the donor-than an antibiotic perturbed state. TRIAL REGISTRATION ClinicalTrials.gov, NCT02299570 . Registered 19 November 2014 Video Abstract.
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Affiliation(s)
- Suryang Kwak
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Pathology and Immunology, Division of Laboratory and Genomic Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - JooHee Choi
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - Tiffany Hink
- Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - Kimberly A. Reske
- Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - Kenneth Blount
- Rebiotix Inc. a Ferring Company, Minneapolis, MN 55113 USA
| | - Courtney Jones
- Rebiotix Inc. a Ferring Company, Minneapolis, MN 55113 USA
| | - Margaret H. Bost
- Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - Xiaoqing Sun
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Pathology and Immunology, Division of Laboratory and Genomic Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - Carey-Ann D. Burnham
- Department of Pathology and Immunology, Division of Laboratory and Genomic Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - Erik R. Dubberke
- Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - Gautam Dantas
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Pathology and Immunology, Division of Laboratory and Genomic Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63110 USA
- Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
| | - for the CDC Prevention Epicenter Program
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Pathology and Immunology, Division of Laboratory and Genomic Medicine, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
- Rebiotix Inc. a Ferring Company, Minneapolis, MN 55113 USA
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63110 USA
- Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, MO 63110 USA
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Choy A, Freedberg DE. Impact of microbiome-based interventions on gastrointestinal pathogen colonization in the intensive care unit. Therap Adv Gastroenterol 2020; 13:1756284820939447. [PMID: 32733601 PMCID: PMC7370550 DOI: 10.1177/1756284820939447] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 06/15/2020] [Indexed: 02/04/2023] Open
Abstract
In the intensive care unit (ICU), colonization of the gastrointestinal tract by potentially pathogenic bacteria is common and often precedes clinical infection. Though effective in the short term, traditional antibiotic-based decolonization methods may contribute to rising resistance in the long term. Novel therapies instead focus on restoring gut microbiome equilibrium to achieve pathogen colonization resistance. This review summarizes the existing data regarding microbiome-based approaches to gastrointestinal pathogen colonization in ICU patients with a focus on prebiotics, probiotics, and synbiotics.
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Affiliation(s)
| | - Daniel E. Freedberg
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York, NY, USA
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Liu J, Miyake H, Zhu H, Li B, Alganabi M, Lee C, Pierro A. Fecal microbiota transplantation by enema reduces intestinal injury in experimental necrotizing enterocolitis. J Pediatr Surg 2020; 55:1094-1098. [PMID: 32234317 DOI: 10.1016/j.jpedsurg.2020.02.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 02/20/2020] [Indexed: 01/05/2023]
Abstract
PURPOSE Necrotizing Enterocolitis (NEC) is a devastating neonatal disease with a high mortality rate. Fecal Microbiota Transplantation (FMT) has been used to treat a variety of gastrointestinal diseases. We aimed to investigate the role of FMT in NEC. METHODS NEC was induced by hypoxia, LPS, and hyperosmolar gavage feeding between postnatal days P5 and P9 (n = 8). Breastfed mice were used as control (n = 7). FMT (30 μl/g) was administered by gavage or enema at P6 during NEC induction. Distal ileum was harvested on P9. Disease severity was evaluated by H&E staining. Gene expression of inflammatory markers IL6 and TNFa was measured. Expression of intestinal barrier function was investigated by measuring Claudin-7. Microbiota composition in ileum and colon was analyzed by quantitative PCR. RESULTS FMT by gavage further increased terminal ileum inflammation and did not improve the histological damage owing to experimental NEC. Conversely, FMT by enema decreased intestinal inflammation and improved histology of the NEC-like injury in the ileum. In addition, compared with NEC alone, FMT by enema increased Claudin-7 expression indicating an improvement in barrier function. These beneficial effects occurred despite no change in microbiota. CONCLUSION Our results show that FMT by enema may be an effective strategy to reduce NEC progression as it attenuates intestinal inflammation and enhances intestinal barrier function. FMT by enema is a potential novel treatment for NEC. LEVEL OF EVIDENCE Level IV, Evidence from well-designed case-control or cohort studies.
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Affiliation(s)
- Jia Liu
- The Hospital for Sick Children, University of Toronto, Toronto, Canada; Department of Pediatric Surgery, Children's Hospital of Fudan University, Shanghai, China
| | - Hiromu Miyake
- The Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Haitao Zhu
- The Hospital for Sick Children, University of Toronto, Toronto, Canada; Department of Pediatric Surgery, Children's Hospital of Fudan University, Shanghai, China
| | - Bo Li
- The Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Mashriq Alganabi
- The Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Carol Lee
- The Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Agostino Pierro
- The Hospital for Sick Children, University of Toronto, Toronto, Canada.
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Adelman MW, Woodworth MH, Langelier C, Busch LM, Kempker JA, Kraft CS, Martin GS. The gut microbiome's role in the development, maintenance, and outcomes of sepsis. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2020; 24:278. [PMID: 32487252 PMCID: PMC7266132 DOI: 10.1186/s13054-020-02989-1] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 05/12/2020] [Indexed: 12/15/2022]
Abstract
The gut microbiome regulates a number of homeostatic mechanisms in the healthy host including immune function and gut barrier protection. Loss of normal gut microbial structure and function has been associated with diseases as diverse as Clostridioides difficile infection, asthma, and epilepsy. Recent evidence has also demonstrated a link between the gut microbiome and sepsis. In this review, we focus on three key areas of the interaction between the gut microbiome and sepsis. First, prior to sepsis onset, gut microbiome alteration increases sepsis susceptibility through several mechanisms, including (a) allowing for expansion of pathogenic intestinal bacteria, (b) priming the immune system for a robust pro-inflammatory response, and (c) decreasing production of beneficial microbial products such as short-chain fatty acids. Second, once sepsis is established, gut microbiome disruption worsens and increases susceptibility to end-organ dysfunction. Third, there is limited evidence that microbiome-based therapeutics, including probiotics and selective digestive decontamination, may decrease sepsis risk and improve sepsis outcomes in select patient populations, but concerns about safety have limited uptake. Case reports of a different microbiome-based therapy, fecal microbiota transplantation, have shown correlation with gut microbial structure restoration and decreased inflammatory response, but these results require further validation. While much of the evidence linking the gut microbiome and sepsis has been established in pre-clinical studies, clinical evidence is lacking in many areas. To address this, we outline a potential research agenda for further investigating the interaction between the gut microbiome and sepsis.
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Affiliation(s)
- Max W Adelman
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, 49 Jesse Hill Jr. Drive, Atlanta, GA, 30303, USA.
| | - Michael H Woodworth
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, 49 Jesse Hill Jr. Drive, Atlanta, GA, 30303, USA
| | - Charles Langelier
- Division of Infectious Diseases, Department of Medicine, University of California, San Francisco, CA, USA
| | - Lindsay M Busch
- Critical Care Medicine Department, National Institutes of Health Clinical Center, Bethesda, MD, USA
| | - Jordan A Kempker
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Colleen S Kraft
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, 49 Jesse Hill Jr. Drive, Atlanta, GA, 30303, USA.,Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Greg S Martin
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA.,Emory Critical Care Center, Emory Healthcare, Atlanta, GA, USA
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33
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Merrick B, Robinson E, Bunce C, Allen L, Bisnauthsing K, Izundu CC, Bell J, Amos G, Shankar-Hari M, Goodman A, Shawcross DL, Goldenberg SD. Faecal microbiota transplant to ERadicate gastrointestinal carriage of Antibiotic Resistant Organisms (FERARO): a prospective, randomised placebo-controlled feasibility trial. BMJ Open 2020; 10:e038847. [PMID: 32457083 PMCID: PMC7252984 DOI: 10.1136/bmjopen-2020-038847] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION Antimicrobial resistance is rising, largely due to the indiscriminate use of antimicrobials. The human gut is the largest reservoir of antibiotic resistant bacteria (ARB). Individuals colonised with ARB have the potential to spread these organisms both in the community and hospital settings. Infections with ARB such as extended spectrum beta-lactamase producing enterobacteriales (ESBL-E) and carbapenemase producing enterobacteriales (CPE) are more difficult to treat and are associated with an increased morbidity and mortality. Presently, there is no effective decolonisation strategy for these ARB. Faecal microbiota transplant (FMT) has emerged as a potential strategy for decolonisation of ARB from the human gut, however there is significant uncertainty about the feasibility, effectiveness and safety of using this approach. METHODS AND ANALYSIS Prospective, randomised, patient-blinded, placebo-controlled feasibility trial of FMT to eradicate gastrointestinal carriage of ARB. Eighty patients with a recent history of invasive infection secondary to ESBL-E or CPE and persistent gastrointestinal carriage will be randomised 1:1 to receive encapsulated FMT or placebo. The primary outcome measure is consent rate (as a proportion of patients who fulfil inclusion/exclusion criteria); this will be used to determine if a substantive trial is feasible. Participants will be followed up at 1 week, 1 month, 3 months and 6 months and monitored for adverse events as well as gastrointestinal carriage rates of ARB after intervention. ETHICS AND DISSEMINATION Research ethics approval was obtained by London-City and East Research Ethics Committee (ref 20/LO/0117). Trial results will be published in a peer-reviewed journal and presented at international conferences. TRIAL REGISTRATION NUMBER ISRCTN registration number 34 467 677 and EudraCT number 2019-001618-41.
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Affiliation(s)
- Blair Merrick
- Centre for Clinical Infection and Diagnostics Research, Guy's and Saint Thomas' Hospitals NHS Trust, London, UK
- Department of Infectious Diseases, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Emily Robinson
- School of Population Health and Environmental Sciences, King's College London, London, UK
| | - Catey Bunce
- Primary Care and Public Health Sciences, King's College London, London, UK
| | - Liz Allen
- Pharmacy Department, Guy's and Saint Thomas' Hospitals NHS Trust, London, UK
- Early Clinical Development Centre of Excellence, IQVIA, Reading, UK
| | - Karen Bisnauthsing
- Centre for Clinical Infection and Diagnostics Research, Guy's and Saint Thomas' Hospitals NHS Trust, London, UK
| | | | - Jordana Bell
- Department of Twin Research and Genetic Epidemiology, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Gregory Amos
- National Institute for Biological Standards and Control, Potters Bar, UK
| | - Manu Shankar-Hari
- Department of Infectious Diseases, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
- Intensive Care Unit, Guy's and Saint Thomas' Hospitals NHS Trust, London, UK
| | - Anna Goodman
- Centre for Clinical Infection and Diagnostics Research, Guy's and Saint Thomas' Hospitals NHS Trust, London, UK
- Department of Infectious Diseases, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Debbie L Shawcross
- Institute of Liver Studies, Inflammation Biology, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Simon D Goldenberg
- Centre for Clinical Infection and Diagnostics Research, Guy's and Saint Thomas' Hospitals NHS Trust, London, UK
- Department of Infectious Diseases, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
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Fecal Microbial Transplantation for the Treatment of Persistent Multidrug-Resistant K lebsiella pneumoniae Infection in a Critically Ill Patient. Case Rep Infect Dis 2020; 2020:8462659. [PMID: 32099702 PMCID: PMC7038171 DOI: 10.1155/2020/8462659] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 01/06/2020] [Indexed: 12/15/2022] Open
Abstract
Dysbiosis of the microbiome is a common finding in critically ill patients, who receive broad-spectrum antibiotics and various forms of organ support. Multidrug-resistant (MDR) organisms are a growing threat in all areas of medicine, but most markedly in the critically ill, where there is both loss of host defences and widespread use of broad spectrum antibiotics. We present a case of a critically ill patient with persistent MDR Klebsiella pneumoniae infection, successfully treated with fecal microbiota transplantation (FMT), using stool of a rigorously-screened, healthy donor. FMT for Clostridium difficile colitis has been well described in the literature and is an established therapy for recurrent infections with Clostridium difficile. The use of FMT for other multidrug-resistant organisms is less frequently described, particularly in the context of critically ill patients. In our case, we have culture-documented clearance of the MDR Klebsiella pneumoniae form a patient of FMT.
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35
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Keen EC, Tasoff P, Hink T, Reske KA, Burnham CAD, Dantas G, Kwon JH, Dubberke ER. Microbiome Restoration by RBX2660 Does Not Preclude Recurrence of Multidrug-Resistant Urinary Tract Infection Following Subsequent Antibiotic Exposure: A Case Report. Open Forum Infect Dis 2020; 7:ofaa042. [PMID: 32154322 PMCID: PMC7052748 DOI: 10.1093/ofid/ofaa042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 02/07/2020] [Indexed: 11/21/2022] Open
Abstract
A 62-year-old woman received RBX2660, an investigational microbiome restoration therapeutic, for recurrent multidrug-resistant (MDR) urinary tract infection (UTI). RBX2660 increased gut microbiome diversity but did not eliminate uropathogen carriage, and MDR UTI recurred after subsequent antibiotic exposure. Thus, restoration of microbiome diversity does not preclude disease recurrence by residual MDR pathogens.
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Affiliation(s)
- Eric C Keen
- The Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA.,Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Preston Tasoff
- The Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA.,Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Tiffany Hink
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Kimberly A Reske
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Carey-Ann D Burnham
- Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA.,Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA.,Department of Pediatrics, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA.,Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Gautam Dantas
- The Edison Family Center for Genome Sciences and Systems Biology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA.,Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA.,Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA.,Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Jennie H Kwon
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Erik R Dubberke
- Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
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36
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Feehan A, Garcia-Diaz J. Bacterial, Gut Microbiome-Modifying Therapies to Defend against Multidrug Resistant Organisms. Microorganisms 2020; 8:microorganisms8020166. [PMID: 31991615 PMCID: PMC7074682 DOI: 10.3390/microorganisms8020166] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/17/2020] [Accepted: 01/17/2020] [Indexed: 02/07/2023] Open
Abstract
Antibiotics have revolutionized human and animal healthcare, but their utility is reduced as bacteria evolve resistance mechanisms over time. Thankfully, there are novel antibiotics in the pipeline to overcome resistance, which are mentioned elsewhere in this special issue, but eventually bacteria are expected to evolve resistance to most new compounds as well. Multidrug resistant organisms (MDROs) that cause infections increase morbidity, mortality, and readmissions as compared with susceptible organisms. Consequently, many research and development pipelines are focused on non-antibiotic strategies, including fecal microbiota transplantation (FMT), probiotics and prebiotics, and a range of therapies in between. Studies reviewed here focus on efforts to directly treat or prevent MDRO infections or colonization. The studies were collected through clinicaltrials.gov, PubMed, and the International Conference on the Harmonisation Good Clinical Practice website (ichgcp.net). While the gold standard of clinical research is randomized controlled trials (RCTs), several pilot studies are included because the field is so young. Although a vast preclinical body of research has led to studies in humans, animal and in vitro studies are not within the scope of this review. This narrative review discusses microbiome-modifying therapies targeting MDROs in the gut and includes current results, ongoing clinical trials, companies with therapies in the pipeline specifically for MDROs, and commentary on clinical implementation and challenges.
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Affiliation(s)
- Amy Feehan
- Infectious Disease Department, Ochsner Clinic Foundation, New Orleans, LA 70121, USA;
| | - Julia Garcia-Diaz
- Infectious Disease Department, Ochsner Clinic Foundation, New Orleans, LA 70121, USA;
- The University of Queensland Faculty of Medicine, Ochsner Clinical School, New Orleans, LA 70121, USA
- Correspondence: ; Tel.: +1-504-842-4005
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37
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Wall S. Prevention of antibiotic resistance - an epidemiological scoping review to identify research categories and knowledge gaps. Glob Health Action 2019; 12:1756191. [PMID: 32475304 PMCID: PMC7782542 DOI: 10.1080/16549716.2020.1756191] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 04/10/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Antibiotics have become the cornerstone for the treatment of infectious diseases and contributed significantly to the dramatic global health development during the last 70 years. Millions of people now survive what were previously life-threatening infections. But antibiotics are finite resources and misuse has led to antibiotic resistance and reduced efficacy within just a few years of introduction of each new antibiotic. The World Health Organization rates antibiotic resistance as a 'global security threat' impacting on global health, food security and development and as important as terrorism and climate change. OBJECTIVES This paper explores, through a scoping review of the literature published during the past 20 years, the magnitude of peer-reviewed and grey literature that addresses antibiotic resistance and specifically the extent to which "prevention" has been at the core. The ultimate aim is to identify know-do gaps and strategies to prevent ABR. METHODS The review covers four main data bases, Web of Science, Medline, Scopus and Ebsco searched for 2000-17. The broader research field "antibiotic OR antimicrobial resistance" gave 431,335 hits. Narrowing the search criteria to "Prevention of antibiotic OR antimicrobial resistance" resulted in 1062 remaining titles. Of these, 622 were unique titles. After screening of the 622 titles for relevance, 420 abstracts were read, and of these 282 papers were read in full. An additional 53 references were identified from these papers, and 64 published during 2018 and 2019 were also included. The final scoping review database thus consisted of 399 papers. RESULTS A thematic structure emerged when categorizing articles in different subject areas, serving as a proxy for interest expressed from the research community. The research area has been an evolving one with about half of the 399 papers published during the past four years of the study period. Epidemiological modelling needs strengthening and there is a need for more and better surveillance systems, especially in lower- and middle-income countries. There is a wealth of information on the local and national uses and misuses of antibiotics. Educational and stewardship programmes basically lack evidence. Several studies address knowledge of the public and prescribers. The lessons for policy are conveyed in many alarming reports from national and international organizations. CONCLUSIONS Descriptive rather than theoretical ambitions have characterized the literature. If we want to better understand and explain the antibiotic situation from a behavioural perspective, the required approaches are lacking. A framework for an epidemiological causal web behind ABR is suggested and may serve to identify entry points for potential interventions.
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Affiliation(s)
- Stig Wall
- Department of Epidemiology and Global Health, Umeå University, Umeå, Sweden
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