Antibiotic Treatment of Clostridium difficile Carrier Mice Triggers a Supershedder State, Spore-Mediated Transmission, and Severe Disease in Immunocompromised Hosts
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Clostridium difficile persists in hospitals by exploiting an infection cycle that is dependent on humans shedding highly resistant and infectious spores. Here we show that human virulent C. difficile can asymptomatically colonize the intestines of immunocompetent mice, establishing a carrier state that persists for many months. C. difficile carrier mice consistently shed low levels of spores but, surprisingly, do not transmit infection to cohabiting mice. However, antibiotic treatment of carriers triggers a highly contagious supershedder state, characterized by a dramatic reduction in the intestinal microbiota species diversity, C. difficile overgrowth, and excretion of high levels of spores. Stopping antibiotic treatment normally leads to recovery of the intestinal microbiota species diversity and suppresses C. difficile levels, although some mice persist in the supershedding state for extended periods. Spore-mediated transmission to immunocompetent mice treated with antibiotics results in self-limiting mucosal inflammation of the large intestine. In contrast, transmission to mice whose innate immune responses are compromised (Myd88 −/− ) leads to a severe intestinal disease that is often fatal. Thus, mice can be used to investigate distinct stages of the C. difficile infection cycle and can serve as a valuable surrogate for studying the spore-mediated transmission and interactions between C. difficile and the host and its microbiota, and the results obtained should guide infection control measures.
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In human-associated microbiota and macroecological contexts, higher phylogenetic diversity is associated with greater ecosystem resilience and productivity.
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From Sequencing ancient calcified dental plaque shows changes in oral microbiota with dietary shifts of the Neolithic and Industrial revolutions (2013) · cites this paper as [44]
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Greengenes, a Chimera-Checked 16S rRNA Gene Database and Workbench Compatible with ARB
DeSantis, T. Z., Hugenholtz, P., Larsen, N., Rojas, M., Brodie, E. L., Keller, K., Huber, T., Dalevi, D., Hu, P., & Andersen, G. L. (2006) · Applied and Environmental Microbiology · doi:10.1128/aem.03006-05 · Cited by 10,891 · see citing works
Diversity of the Human Intestinal Microbial Flora
Eckburg, P. B., Bik, E. M., Bernstein, C. N., Purdom, E., Dethlefsen, L., Sargent, M., Gill, S. R., Nelson, K. E., & Relman, D. A. (2005) · Science · doi:10.1126/science.1110591 · Cited by 7,913 · see citing works
Unravelling the pathogenesis of inflammatory bowel disease
Xavier, R. J., & Podolsky, D. K. (2007) · Nature · doi:10.1038/nature06005 · Cited by 4,364 · see citing works
Recognition of Commensal Microflora by Toll-Like Receptors Is Required for Intestinal Homeostasis
Rakoff-Nahoum, S., Paglino, J., Eslami-Varzaneh, F., Edberg, S., & Medzhitov, R. (2004) · Cell · doi:10.1016/j.cell.2004.07.002 · Cited by 4,251 · see citing works
Evolution of mammals and their gut microbes
Ley, R. E., Hamady, M., Lozupone, C., Turnbaugh, P. J., Ramey, R. R., Bircher, J. S., Schlegel, M. L., Tucker, T. A., Schrenzel, M. D., Knight, R., et al. (2008) · Science · doi:10.1126/science.1155725 · Cited by 3,747 · see citing works
Superspreading and the effect of individual variation on disease emergence
Lloyd-Smith, J. O., Schreiber, S. J., Kopp, P. E., & Getz, W. M. (2005) · Nature · doi:10.1038/nature04153 · Cited by 2,514 · see citing works
Schloss, P. D., & Handelsman, J. (2005) · Applied and Environmental Microbiology · doi:10.1128/aem.71.3.1501-1506.2005 · Cited by 2,503 · see citing works
Dethlefsen, L., Huse, S., Sogin, M. L., & Relman, D. A. (2008) · PLoS Biology · doi:10.1371/journal.pbio.0060280 · Cited by 2,361 · see citing works
Targeted disruption of the MyD88 gene results in loss of IL-1- and IL-18-mediated function.
Adachi, O., Kawai, T., Takeda, K., Matsumoto, M., Tsutsui, H., Sakagami, M., Nakanishi, K., & Akira, S. (1998) · Immunity · doi:10.1016/s1074-7613(00)80596-8 · Cited by 2,358 · see citing works
Clostridium difficile--more difficult than ever.
Kelly, C. P., & Lamont, J. (2008) · New England Journal of Medicine · doi:10.1056/nejmra0707500 · Cited by 1,386 · see citing works
Antibiotic-Associated Diarrhea
Bartlett, J. G. (2002) · New England Journal of Medicine · doi:10.1056/nejmcp011603 · Cited by 1,206 · see citing works
Woolhouse, M. E. J., Dye, C., Etard, J.-F., Smith, T., Charlwood, J. D., Garnett, G. P., Hagan, P., Hii, J. L. K., Ndhlovu, P. D., Quinnell, R. J., et al. (1997) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.94.1.338 · Cited by 1,194 · see citing works
Long-term ecological impacts of antibiotic administration on the human intestinal microbiota
Jernberg, C., Löfmark, S., Edlund, C., & Jansson, J. K. (2007) · The ISME Journal · doi:10.1038/ismej.2007.3 · Cited by 1,134 · see citing works
Stecher, B., Robbiani, R., Walker, A. W., Westendorf, A. M., Barthel, M., Kremer, M., Chaffron, S., Macpherson, A. J., Buer, J., Parkhill, J., et al. (2007) · PLoS Biology · doi:10.1371/journal.pbio.0050244 · Cited by 1,048 · see citing works
Self-citationBarthel, M., Hapfelmeier, S., Quintanilla-Martínez, L., Kremer, M., Rohde, M., Hogardt, M., Pfeffer, K., Rüssmann, H., & Hardt, W.-D. (2003) · Infection and Immunity · doi:10.1128/iai.71.5.2839-2858.2003 · Cited by 1,020 · see citing works
Vaishnava, S., Behrendt, C. L., Ismail, A. S., Eckmann, L., & Hooper, L. V. (2008) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0808723105 · Cited by 1,019 · see citing works
Chang, J. Y., Antonopoulos, D. A., Kalra, A., Tonelli, A., Khalife, W. T., Schmidt, T. M., & Young, V. B. (2008) · The Journal of Infectious Diseases · doi:10.1086/525047 · Cited by 1,010 · see citing works
Asymptomatic Carriage ofClostridium difficileand Serum Levels of IgG Antibody against Toxin A
Kyne, L., Warny, M., Qamar, A., & Kelly, C. P. (2000) · New England Journal of Medicine · doi:10.1056/nejm200002103420604 · Cited by 932 · see citing works
Toxin B is essential for virulence of Clostridium difficile
Lyras, D., O’Connor, J. R., Howarth, P. M., Sambol, S. P., Carter, G. P., Phumoonna, T., Poon, R., Adams, V., Vedantam, G., Johnson, S., et al. (2009) · Nature · doi:10.1038/nature07822 · Cited by 745 · see citing works
Donskey, C. J., Chowdhry, T. K., Hecker, M. T., Hoyen, C. K., Hanrahan, J., Hujer, A. M., Hutton‐Thomas, R., Whalen, C. C., Bonomo, R. A., & Rice, L. B. (2000) · New England Journal of Medicine · doi:10.1056/nejm200012283432604 · Cited by 691 · see citing works
The ClosTron: a universal gene knock-out system for the genus Clostridium
Heap, J. T., Pennington, O. J., Cartman, S. T., Carter, G. P., & Minton, N. P. (2007) · Journal of Microbiological Methods · doi:10.1016/j.mimet.2007.05.021 · Cited by 663 · see citing works
MOLECULAR GENETICS OF SPORULATION IN BACILLUS SUBTILIS
Stragier, P., & Losick, R. M. (1996) · Annual Review of Genetics · doi:10.1146/annurev.genet.30.1.297 · Cited by 647 · see citing works
Goorhuis, A., Bakker, D., Corver, J., Debast, S. B., Harmanus, C., Notermans, D. W., Bergwerff, A. A., Dekker, F. W., & Kuijper, E. J. (2008) · Clinical Infectious Diseases · doi:10.1086/592257 · Cited by 633 · see citing works
Vancomycin-resistant enterococci exploit antibiotic-induced innate immune deficits
Brandl, K., Plitas, G., Mihu, C. N., Ubeda, C., Jia, T., Fleisher, M., Schnabl, B., DeMatteo, R. P., & Pamer, E. G. (2008) · Nature · doi:10.1038/nature07250 · Cited by 631 · see citing works
Narrative Review: The New Epidemic of Clostridium difficile–Associated Enteric Disease
Bartlett, J. G. (2006) · Annals of Internal Medicine · doi:10.7326/0003-4819-145-10-200611210-00008 · Cited by 592 · see citing works
Riggs, M. M., Sethi, A. K., Zabarsky, T. F., Eckstein, E. C., Jump, R., & Donskey, C. J. (2007) · Clinical Infectious Diseases · doi:10.1086/521854 · Cited by 550 · see citing works
Reproducible Community Dynamics of the Gastrointestinal Microbiota following Antibiotic Perturbation
Antonopoulos, D. A., Huse, S. M., Morrison, H. G., Schmidt, T. M., Sogin, M. L., & Young, V. B. (2009) · Infection and Immunity · doi:10.1128/iai.01520-08 · Cited by 545 · see citing works
Host-induced epidemic spread of the cholera bacterium
Merrell, D. S., Butler, S. M., Qadri, F., Dolganov, N. A., Alam, A., Cohen, M. B., Calderwood, S. B., Schoolnik, G. K., & Camilli, A. (2002) · Nature · doi:10.1038/nature00778 · Cited by 534 · see citing works
The role of microbiota in infectious disease
Stecher, B., & Hardt, W. (2008) · Trends in Microbiology · doi:10.1016/j.tim.2007.12.008 · Cited by 533 · see citing works
A mouse model of clostridium difficile-associated disease
Chen, X., Katchar, K., Goldsmith, J. D., Nanthakumar, N., Cheknis, A., Gerding, D. N., & Kelly, C. P. (2008) · Gastroenterology · doi:10.1053/j.gastro.2008.09.002 · Cited by 510 · see citing works
Sekirov, I., Tam, N. M., Jogova, M., Robertson, M. L., Li, Y., Lupp, C., & Finlay, B. B. (2008) · Infection and Immunity · doi:10.1128/iai.00319-08 · Cited by 483 · see citing works
Vollaard, E. J., & Clasener, H. A. (1994) · Antimicrobial Agents and Chemotherapy · doi:10.1128/aac.38.3.409 · Cited by 478 · see citing works
A comparative genomic view of clostridial sporulation and physiology
Paredes, C. J., Alsaker, K. V., & Papoutsakis, E. T. (2005) · Nature Reviews Microbiology · doi:10.1038/nrmicro1288 · Cited by 343 · see citing works
Use of sodium taurocholate to enhance spore recovery on a medium selective for Clostridium difficile
Wilson, K. H., Kennedy, M. J., & Fekety, F. R. (1982) · Journal of Clinical Microbiology · doi:10.1128/jcm.15.3.443-446.1982 · Cited by 314 · see citing works
Measures to Control and PreventClostridium difficileInfection
Gerding, D. N., Muto, C. A., & Owens, R. C. (2008) · Clinical Infectious Diseases · doi:10.1086/521861 · Cited by 312 · see citing works
Infection control measures to limit the spread of Clostridium difficile
Vonberg, R., Kuijper, E. J., Wilcox, M. H., Barbut, F., Tüll, P., Gastmeier, P., van den Broek, P. J., Colville, A., Coignard, B., Daha, T., et al. (2008) · Clinical Microbiology and Infection · doi:10.1111/j.1469-0691.2008.01992.x · Cited by 312 · see citing works
Lawley, T. D., Bouley, D. M., Hoy-Schulz, Y. E., Gerke, C., Relman, D. A., & Monack, D. M. (2007) · Infection and Immunity · doi:10.1128/iai.01189-07 · Cited by 307 · see citing works
Self-citationCroswell, A., Amir, E., Teggatz, P., Barman, M., & Salzman, N. H. (2009) · Infection and Immunity · doi:10.1128/iai.00006-09 · Cited by 272 · see citing works
Stabler, R. A., Gerding, D. N., Songer, J. G., Drudy, D., Brazier, J. S., Trinh, H. T., Witney, A. A., Hinds, J., & Wren, B. W. (2006) · Journal of Bacteriology · doi:10.1128/jb.00664-06 · Cited by 212 · see citing works
Self-citationPathogenesis of Clostridium difficile infection
Borriello, S. P. (1998) · Journal of Antimicrobial Chemotherapy · doi:10.1093/jac/41.suppl_3.13 · Cited by 210 · see citing works
Clostridium difficile: An important pathogen of food animals
Songer, J. G., & Anderson, M. A. (2005) · Anaerobe · doi:10.1016/j.anaerobe.2005.09.001 · Cited by 208 · see citing works
Wilson, K. H. (1983) · Journal of Clinical Microbiology · doi:10.1128/jcm.18.4.1017-1019.1983 · Cited by 188 · see citing works
Is Clostridium difficile-associated infection a potentially zoonotic and foodborne disease?
Rupnik, M. (2007) · Clinical Microbiology and Infection · doi:10.1111/j.1469-0691.2007.01687.x · Cited by 181 · see citing works
Gerding, D. N. (2004) · Clinical Infectious Diseases · doi:10.1086/382084 · Cited by 177 · see citing works
Efficacy of Hospital Cleaning Agents and Germicides Against EpidemicClostridium difficileStrains
Fawley, W. N., Underwood, S., Freeman, J., Baines, S. D., Saxton, K., Stephenson, K., Owens, R. C., & Wilcox, M. H. (2007) · Infection Control and Hospital Epidemiology · doi:10.1086/519201 · Cited by 165 · see citing works
Construction and analysis of chromosomal Clostridium difficile mutants
O’Connor, J. R., Lyras, D., Farrow, K. A., Adams, V., Powell, D., Hinds, J., Cheung, J. K., & Rood, J. I. (2006) · Molecular Microbiology · doi:10.1111/j.1365-2958.2006.05315.x · Cited by 158 · see citing works
Ozaki, E., Kato, H., Kita, H., Karasawa, T., Maegawa, T., Koino, Y., Matsumoto, K., Takada, T., Nomoto, K., Tanaka, R., et al. (2004) · Journal of Medical Microbiology · doi:10.1099/jmm.0.05376-0 · Cited by 144 · see citing works
The Roles of γ1 Heavy Chain Membrane Expression and Cytoplasmic Tail in IgG1 Responses
Kaisho, T., Schwenk, F., & Rajewsky, K. (1997) · Science · doi:10.1126/science.276.5311.412 · Cited by 140 · see citing works
Fukata, M., Breglio, K. J., Chen, A., Vamadevan, A. S., Goo, T., Hsu, D. S., Conduah, D. E., Xu, R., & Abreu, M. T. (2008) · The Journal of Immunology · doi:10.4049/jimmunol.180.3.1886 · Cited by 131 · see citing works
Science and pragmatism in the treatment and prevention of neutropenic infection
Klastersky, J. A. (1998) · Journal of Antimicrobial Chemotherapy · doi:10.1093/jac/41.suppl_4.13 · Cited by 130 · see citing works
In Vivo Bioluminescence Imaging of the Murine Pathogen Citrobacter rodentium
Wiles, S., Pickard, K., Peng, K.-T., Macdonald, T., & Frankel, G. (2006) · Infection and Immunity · doi:10.1128/iai.00848-06 · Cited by 126 · see citing works
Dobson, G., Hickey, C., & Trinder, J. (2003) · Intensive Care Medicine · doi:10.1007/s00134-003-1754-7 · Cited by 101 · see citing works
Clostridium difficile in gnotobiotic mice
Onderdonk, A. B., Cisneros, R. L., & Bartlett, J. G. (1980) · Infection and Immunity · doi:10.1128/iai.28.1.277-282.1980 · Cited by 96 · see citing works
Drudy, D., Harnedy, N., Fanning, S., O’Mahony, R., & Kyne, L. (2006) · Clinical Microbiology and Infection · doi:10.1111/j.1469-0691.2006.01634.x · Cited by 81 · see citing works
Clostridium difficile infection
Kuipers, E. J., & Surawicz, C. M. (2008) · The Lancet · doi:10.1016/s0140-6736(08)60635-2 · Cited by 78 · see citing works
Modelling infectious disease — time to think outside the box?
Wiles, S., Hanage, W. P., Frankel, G. M., & Robertson, B. D. (2006) · Nature Reviews Microbiology · doi:10.1038/nrmicro1386 · Cited by 65 · see citing works
Mortality of patients with antibiotic-associated diarrhoea: the impact of Clostridium difficile
Bishara, J., Peled, N., Pitlik, S. D., & Samra, Z. (2008) · Journal of Hospital Infection · doi:10.1016/j.jhin.2008.01.033 · Cited by 55 · see citing works
Infection of Hamsters with Historical and Epidemic BI Types ofClostridium difficile
Razaq, N., Sambol, S. P., Nagaro, K. J., Zukowski, W. E., Cheknis, A. K., Johnson, S., & Gerding, D. N. (2007) · The Journal of Infectious Diseases · doi:10.1086/523106 · Cited by 54 · see citing works
Clostridium difficile: from obscurity to superbug
Brazier, J. S. (2008) · British Journal of Biomedical Science · doi:10.1080/09674845.2008.11732796 · Cited by 36 · see citing works
Interaction of Enteric Bacterial Pathogens with Murine Embryonic Stem Cells
Yu, J., Rossi, R., Hale, C., Goulding, D., & Gordon Dougan, B. (2008) · Infection and Immunity · doi:10.1128/iai.01003-08 · Cited by 35 · see citing works
Self-citationBohnhoff, M., Bl, D., & Cp, M. (2002) · PubMed · Cited by 35 · see citing works
Clostridium difficile and acute respiratory distress syndrome
Jacob, S. S., Sebastian, J. C., Hiorns, D., Jacob, S., & Mukerjee, P. K. (2004) · Heart & Lung · doi:10.1016/j.hrtlng.2004.04.003 · Cited by 29 · see citing works
Riley, T. V., Brazier, J. S., Hassan, H. H., Williams, K., & Phillips, K. D. (1987) · Epidemiology and Infection · doi:10.1017/s0950268800067832 · Cited by 29 · see citing works
Clostridium difficilecausing acute renal failure: Case presentation and review
Arrich, J. (2005) · World Journal of Gastroenterology · doi:10.3748/wjg.v11.i8.1245 · Cited by 21 · see citing works
Vernet, A. R., Corthier, G., Dubos, F., & Parodi, A.-L. (1989) · Infection and Immunity · doi:10.1128/iai.57.7.2123-2127.1989 · Cited by 19 · see citing works
Colitis Associated with Clostridium difficile in Specific-Pathogen-Free C3H-scid Mice
Kawano, A., Ikeda, M., Riichirou, I., Akiko, K., Watanabe, K., Tatsuo, H., Kokubo, T., & MATSUSHITA, S. (2007) · Journal of Veterinary Medical Science · doi:10.1292/jvms.69.973 · Cited by 10 · see citing works
Flagged first, then by citations
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Gut microbiota in health and disease
Sekirov, I., Russell, S. L., Antunes, L. C. M., & Finlay, B. B. (2010) · Physiological Reviews · doi:10.1152/physrev.00045.2009 · Cited by 4,182 · see citing works
Role of the gut microbiota in immunity and inflammatory disease
Kamada, N., Seo, S.-U., Chen, G. Y., & Núñez, G. (2013) · Nature reviews. Immunology · doi:10.1038/nri3430 · Cited by 2,256 · see citing works
Impacts of biodiversity on the emergence and transmission of infectious diseases
Keesing, F., Belden, L. K., Daszak, P., Dobson, A., Harvell, C. D., Holt, R. D., Hudson, P., Jolles, A., Jones, K. E., Mitchell, C. E., et al. (2010) · Nature · doi:10.1038/nature09575 · Cited by 2,043 · see citing works
Dominant and diet-responsive groups of bacteria within the human colonic microbiota
Walker, A. W., Ince, J., Duncan, S. H., Webster, L. M., Holtrop, G., Ze, X., Brown, D., Stares, M. D., Scott, P., Bergerat, A., et al. (2011) · The ISME Journal · doi:10.1038/ismej.2010.118 · Cited by 1,632 · see citing works
Self-citationControl of pathogens and pathobionts by the gut microbiota
Kamada, N., Chen, G. Y., Inohara, N., & Núñez, G. (2013) · Nature Immunology · doi:10.1038/ni.2608 · Cited by 1,625 · see citing works
Microbiota-mediated colonization resistance against intestinal pathogens
Buffie, C. G., & Pamer, E. G. (2013) · Nature reviews. Immunology · doi:10.1038/nri3535 · Cited by 1,564 · see citing works
Culturing of ‘unculturable’ human microbiota reveals novel taxa and extensive sporulation
Browne, H. P., Forster, S. C., Anonye, B. O., Kumar, N., Neville, B. A., Stares, M. D., Goulding, D., & Lawley, T. D. (2016) · Nature · doi:10.1038/nature17645 · Cited by 1,299 · see citing works
Self-citationMicrobiota-liberated host sugars facilitate post-antibiotic expansion of enteric pathogens
Ng, K. M., Ferreyra, J. A., Higginbottom, S. K., Lynch, J. B., Kashyap, P. C., Gopinath, S., Naidu, N., Choudhury, B., Weimer, B. C., Monack, D. M., et al. (2013) · Nature · doi:10.1038/nature12503 · Cited by 1,035 · see citing works
Ubeda, C., Taur, Y., Jenq, R. R., Equinda, M. J., Son, T., Samstein, M., Viale, A., Socci, N. D., van den Brink, M. R. M., Kamboj, M., et al. (2010) · Journal of Clinical Investigation · doi:10.1172/jci43918 · Cited by 943 · see citing works
Antibiotics and the Human Gut Microbiome: Dysbioses and Accumulation of Resistances
Francino, M. P. (2016) · Frontiers in Microbiology · doi:10.3389/fmicb.2015.01543 · Cited by 956 · see citing works
Interactions of commensal and pathogenic microorganisms with the intestinal mucosal barrier
Martens, E. C., Neumann, M., & Desai, M. S. (2018) · Nature Reviews Microbiology · doi:10.1038/s41579-018-0036-x · Cited by 711 · see citing works
Adler, C. J., Dobney, K., Weyrich, L. S., Kaidonis, J., Walker, A. W., Haak, W., Bradshaw, C. J. A., Townsend, G., Sołtysiak, A., Alt, K. W., et al. (2013) · Nature Genetics · doi:10.1038/ng.2536 · Cited by 621 · see citing works
Self-citationIntestinal colonization resistance
Lawley, T. D., & Walker, A. W. (2013) · Immunology · doi:10.1111/j.1365-2567.2012.03616.x · Cited by 610 · see citing works
Self-citationBuffie, C. G., Jarchum, I., Equinda, M., Lipuma, L., Gobourne, A., Viale, A., Ubeda, C., Xavier, J., & Pamer, E. G. (2012) · Infection and Immunity · doi:10.1128/iai.05496-11 · Cited by 596 · see citing works
Role of the Commensal Microbiota in Normal and Pathogenic Host Immune Responses
Littman, D. R., & Pamer, E. G. (2011) · Cell Host & Microbe · doi:10.1016/j.chom.2011.10.004 · Cited by 548 · see citing works
Clostridium difficile colitis: pathogenesis and host defence
Abt, M. C., McKenney, P. T., & Pamer, E. G. (2016) · Nature Reviews Microbiology · doi:10.1038/nrmicro.2016.108 · Cited by 552 · see citing works
Lawley, T. D., Clare, S., Walker, A. W., Stares, M. D., Connor, T. R., Raisen, C., Goulding, D., Rad, R., Schreiber, F., Brandt, C., et al. (2012) · PLoS Pathogens · doi:10.1371/journal.ppat.1002995 · Cited by 540 · see citing works
Self-citationAirway Microbiota and Pathogen Abundance in Age-Stratified Cystic Fibrosis Patients
Cox, M. J., Allgaier, M., Taylor, B., Baek, M. S., Huang, Y. J., Daly, R. A., Karaöz, U., Andersen, G. L., Brown, R., Fujimura, K. E., et al. (2010) · PLoS ONE · doi:10.1371/journal.pone.0011044 · Cited by 448 · see citing works
Mechanisms controlling pathogen colonization of the gut
Stecher, B., & Hardt, W. (2010) · Current Opinion in Microbiology · doi:10.1016/j.mib.2010.10.003 · Cited by 415 · see citing works
Abreu, N. A., Nagalingam, N. A., Song, Y., Roediger, F. C., Pletcher, S. D., Goldberg, A. N., & Lynch, S. V. (2012) · Science Translational Medicine · doi:10.1126/scitranslmed.3003783 · Cited by 415 · see citing works
Role of the gut microbiota in defining human health
Fujimura, K. E., Slusher, N. A., Cabana, M. D., & Lynch, S. V. (2010) · Expert Review of Anti-infective Therapy · doi:10.1586/eri.10.14 · Cited by 408 · see citing works
“Blooming” in the gut: how dysbiosis might contribute to pathogen evolution.
Stecher, B., Maier, L., & Hardt, W.-D. (2013) · Nature Reviews Microbiology · doi:10.1038/nrmicro2989 · Cited by 378 · see citing works
The Clostridium difficile spo0A Gene Is a Persistence and Transmission Factor
Deakin, L. J., Clare, S., Fagan, R. P., Dawson, L. F., Pickard, D., West, M. R., Wren, B. W., Fairweather, N. F., Gordon Dougan, B., & Lawley, T. D. (2012) · Infection and Immunity · doi:10.1128/iai.00147-12 · Cited by 361 · see citing works
Self-citationAntibiotics, microbiota, and immune defense
Úbeda, C., & Pamer, E. G. (2012) · Trends in Immunology · doi:10.1016/j.it.2012.05.003 · Cited by 359 · see citing works
Schwan, C., Stecher, B., Tzivelekidis, T., van Ham, M., Rohde, M., Hardt, W., Wehland, J., & Aktories, K. (2009) · PLoS Pathogens · doi:10.1371/journal.ppat.1000626 · Cited by 335 · see citing works
Sassone‐Corsi, M., & Raffatellu, M. (2015) · The Journal of Immunology · doi:10.4049/jimmunol.1403169 · Cited by 330 · see citing works
Carter, G. P., Chakravorty, A., Nguyen, T. A. P., Mileto, S. J., Schreiber, F., Li, L. Q., Howarth, P. M., Clare, S., Cunningham, B. A., Sambol, S. P., et al. (2015) · mBio · doi:10.1128/mbio.00551-15 · Cited by 326 · see citing works
Self-citationFreedberg, D. E., Toussaint, N. C., Chen, S. P., Ratner, A. J., Whittier, S., Wang, T. C., Wang, H. H., & Abrams, J. A. (2015) · Gastroenterology · doi:10.1053/j.gastro.2015.06.043 · Cited by 322 · see citing works
Understanding Clostridium difficile Colonization
Crobach, M. J. T., Vernon, J. J., Loo, V. G., Kong, L. Y., Péchiné, S., Wilcox, M. H., & Kuijper, E. J. (2018) · Clinical Microbiology Reviews · doi:10.1128/cmr.00021-17 · Cited by 329 · see citing works
From superspreaders to disease hotspots: linking transmission across hosts and space
Paull, S. H., Song, S., McClure, K. M., Cassin‐Sackett, L., Kilpatrick, A. M., & Johnson, P. T. J. (2011) · Frontiers in Ecology and the Environment · doi:10.1890/110111 · Cited by 303 · see citing works
Abt, M. C., Lewis, B. B., Caballero, S., Xiong, H., Carter, R. A., Sušac, B., Ling, L., Leiner, I. M., & Pamer, E. G. (2015) · Cell Host & Microbe · doi:10.1016/j.chom.2015.06.011 · Cited by 293 · see citing works
Multiple Factors Modulate Biofilm Formation by the Anaerobic Pathogen Clostridium difficile
Thapa, T. B., Leuzzi, R., Ng, Y. K., Baban, S. T., Adamo, R., Kuehne, S. A., Scarselli, M., Minton, N. P., Serruto, D., & Unnikrishnan, M. (2012) · Journal of Bacteriology · doi:10.1128/jb.01980-12 · Cited by 287 · see citing works
Mechanism of the Gut Microbiota Colonization Resistance and Enteric Pathogen Infection
Khan, I., Bai, Y., Zha, L., Ullah, N., Ullah, H., Shah, S. R. H., Sun, H., & Zhang, C. (2021) · Frontiers in Cellular and Infection Microbiology · doi:10.3389/fcimb.2021.716299 · Cited by 291 · see citing works
Clostridium difficile infection in the community: a zoonotic disease?
Hensgens, M. P. M., Keessen, E. C., Squire, M. M., Riley, T. V., Koene, M. G. J., Boer, E. D., Lipman, L. J. A., & Kuijper, E. J. (2012) · Clinical Microbiology and Infection · doi:10.1111/j.1469-0691.2012.03853.x · Cited by 288 · see citing works
Reeves, A. E., Theriot, C. M., Bergin, I. L., Huffnagle, G. B., Schloss, P. D., & Young, V. B. (2011) · Gut Microbes · doi:10.4161/gmic.2.3.16333 · Cited by 270 · see citing works
Effect of Antibiotic Treatment on the Intestinal Metabolome
Antunes, L. C. M., Han, J., Ferreira, R. B. R., Lolić, P., Borchers, C. H., & Finlay, B. B. (2011) · Antimicrobial Agents and Chemotherapy · doi:10.1128/aac.01664-10 · Cited by 271 · see citing works
Clostridium difficile and the microbiota
Seekatz, A. M., & Young, V. B. (2014) · Journal of Clinical Investigation · doi:10.1172/jci72336 · Cited by 255 · see citing works
Microbiota-accessible carbohydrates suppress Clostridium difficile infection in a murine model
Hryckowian, A. J., Treuren, W. V., Smits, S. A., Davis, N. M., Gardner, J. O., Bouley, D. M., & Sonnenburg, J. L. (2018) · Nature Microbiology · doi:10.1038/s41564-018-0150-6 · Cited by 249 · see citing works
Microbiota-mediated inflammation and antimicrobial defense in the intestine
Caballero, S., & Pamer, E. G. (2015) · Annual Review of Immunology · doi:10.1146/annurev-immunol-032713-120238 · Cited by 238 · see citing works
Britton, R. A., & Young, V. B. (2012) · Trends in Microbiology · doi:10.1016/j.tim.2012.04.001 · Cited by 236 · see citing works
Stecher, B. (2015) · Microbiology Spectrum · doi:10.1128/microbiolspec.mbp-0008-2014 · Cited by 235 · see citing works
The Etiology and Pathogenesis of Chronic Rhinosinusitis: a Review of Current Hypotheses
Lam, K. K., Schleimer, R. P., & Kern, R. C. (2015) · Current Allergy and Asthma Reports · doi:10.1007/s11882-015-0540-2 · Cited by 229 · see citing works
Clostridium difficile infection
Vedantam, G., Clark, A. E., Chu, M., McQuade, R., Mallozzi, M., & Viswanathan, V. K. (2012) · Gut Microbes · doi:10.4161/gmic.19399 · Cited by 210 · see citing works
A Role for TLR4 in Clostridium difficile Infection and the Recognition of Surface Layer Proteins
Ryan, A. W., Lynch, M. J., Smith, S. M., Amu, S., Nel, H. J., McCoy, C. E., Dowling, J. K., Draper, E., O’Reilly, V. P., McCarthy, C., et al. (2011) · PLoS Pathogens · doi:10.1371/journal.ppat.1002076 · Cited by 200 · see citing works
Metabolism of Bile Salts in Mice Influences Spore Germination in Clostridium difficile
Giel, J. L., Sorg, J. A., Sonenshein, A. L., & Zhu, J. (2010) · PLoS ONE · doi:10.1371/journal.pone.0008740 · Cited by 195 · see citing works
Cyclic Diguanylate Inversely Regulates Motility and Aggregation in Clostridium difficile
Purcell, E. B., McKee, R. W., McBride, S. M., Waters, C. M., & Tamayo, R. (2012) · Journal of Bacteriology · doi:10.1128/jb.00100-12 · Cited by 191 · see citing works
Theriot, C. M., Koumpouras, C. C., Carlson, P. E., Bergin, I. L., Aronoff, D. M., & Young, V. B. (2011) · Gut Microbes · doi:10.4161/gmic.19142 · Cited by 190 · see citing works
Hasegawa, M., Yamazaki, T., Kamada, N., Tawaratsumida, K., Kim, Y., Núñez, G., & Inohara, N. (2011) · The Journal of Immunology · doi:10.4049/jimmunol.1003761 · Cited by 187 · see citing works
Kaiser, P., Diard, M., Stecher, B., & Hardt, W. (2011) · Immunological Reviews · doi:10.1111/j.1600-065x.2011.01070.x · Cited by 181 · see citing works
Song, Y., Garg, S., Girotra, M., Maddox, C., von Rosenvinge, E. C., Dutta, A., Dutta, S., & Fricke, W. F. (2013) · PLoS ONE · doi:10.1371/journal.pone.0081330 · Cited by 169 · see citing works
Clostridium difficile Toxins: Mediators of Inflammation
Shen, A. (2012) · Journal of Innate Immunity · doi:10.1159/000332946 · Cited by 171 · see citing works
Bella, S. D., Sanson, G., Monticelli, J., Zerbato, V., Principe, L., Giuffrè, M., Pipitone, G., & Luzzati, R. (2024) · Clinical Microbiology Reviews · doi:10.1128/cmr.00135-23 · Cited by 178 · see citing works
Whary, M. T., Baumgarth, N., Fox, J. G., & Barthold, S. W. (2015) · Elsevier eBooks · doi:10.1016/b978-0-12-409527-4.00003-1 · Cited by 162 · see citing works
When pathogenic bacteria meet the intestinal microbiota
Rolhion, N., & Chassaing, B. (2016) · Philosophical Transactions of the Royal Society B Biological Sciences · doi:10.1098/rstb.2015.0504 · Cited by 159 · see citing works
Characterisation of Clostridium difficile Biofilm Formation, a Role for Spo0A
Dawson, L. F., Valiente, E., Faulds‐Pain, A., Donahue, E. H., & Wren, B. W. (2012) · PLoS ONE · doi:10.1371/journal.pone.0050527 · Cited by 158 · see citing works
Self-citationCarter, G. P., Douce, G. R., Govind, R., Howarth, P. M., Mackin, K. E., Spencer, J., Buckley, A. M., Antunes, A. P. D. O. L., Kotsanas, D., Jenkin, G., et al. (2011) · PLoS Pathogens · doi:10.1371/journal.ppat.1002317 · Cited by 158 · see citing works
Handel, A., & Rohani, P. (2015) · Philosophical Transactions of the Royal Society B Biological Sciences · doi:10.1098/rstb.2014.0302 · Cited by 153 · see citing works
Critical Role for MyD88-Mediated Neutrophil Recruitment during Clostridium difficile Colitis
Jarchum, I., Liu, M., Shi, C., Equinda, M. J., & Pamer, E. G. (2012) · Infection and Immunity · doi:10.1128/iai.00448-12 · Cited by 153 · see citing works
Hirsch, B. E., Saraiya, N., Poeth, K., Schwartz, R. M., Epstein, M. E., & Honig, G. (2015) · BMC Infectious Diseases · doi:10.1186/s12879-015-0930-z · Cited by 153 · see citing works
Virulence factors of Clostridium difficile and their role during infection
Janoir, C. (2015) · Anaerobe · doi:10.1016/j.anaerobe.2015.10.009 · Cited by 148 · see citing works
Seekatz, A. M., Theriot, C. M., Molloy, C. T., Wozniak, K. L., Bergin, I. L., & Young, V. B. (2015) · Infection and Immunity · doi:10.1128/iai.00459-15 · Cited by 145 · see citing works
Cyclic Di-GMP Riboswitch-Regulated Type IV Pili Contribute to Aggregation of Clostridium difficile
Bordeleau, É., Purcell, E. B., Lafontaine, D. A., Fortier, L., Tamayo, R., & Burrus, V. (2014) · Journal of Bacteriology · doi:10.1128/jb.02340-14 · Cited by 144 · see citing works
Clostridium difficilevirulence factors: Insights into an anaerobic spore-forming pathogen
Awad, M. M., Johanesen, P., Carter, G. P., Rose, E., & Lyras, D. (2014) · Gut Microbes · doi:10.4161/19490976.2014.969632 · Cited by 142 · see citing works
Adaptive Strategies and Pathogenesis of Clostridium difficile fromIn VivoTranscriptomics
Janoir, C., Denève-Larrazet, C., Bouttier, S., Barbut, F., Hoÿs, S., Caleechum, L., Chapetón-Montes, D., Pereira, F. C., Henriques, A. O., Collignon, A., et al. (2013) · Infection and Immunity · doi:10.1128/iai.00515-13 · Cited by 140 · see citing works
The intestinal microbiota and susceptibility to infection in immunocompromised patients
Taur, Y., & Pamer, E. G. (2013) · Current Opinion in Infectious Diseases · doi:10.1097/qco.0b013e3283630dd3 · Cited by 137 · see citing works
Antibiotic-induced collateral damage to the microbiota and associated infections
de Nies, L., Kobras, C. M., & Stracy, M. (2023) · Nature Reviews Microbiology · doi:10.1038/s41579-023-00936-9 · Cited by 145 · see citing works
Passmore, I. J., Letertre, M. P. M., Preston, M. D., Bianconi, I., Harrison, M. A., Nasher, F., Kaur, H., Hong, H. A., Baines, S. D., Cutting, S. M., et al. (2018) · PLoS Pathogens · doi:10.1371/journal.ppat.1007191 · Cited by 138 · see citing works
Self-citationIL-33 drives group 2 innate lymphoid cell-mediated protection during Clostridium difficile infection
Frisbee, A. L., Saleh, M. M., Young, M. K., Leslie, J. L., Simpson, M. D., Abhyankar, M. M., Cowardin, C. A., Ma, J. Z., Pramoonjago, P., Turner, S., et al. (2019) · Nature Communications · doi:10.1038/s41467-019-10733-9 · Cited by 137 · see citing works
Models for the study of Clostridium difficile infection
Best, E. L., Freeman, J., & Wilcox, M. H. (2012) · Gut Microbes · doi:10.4161/gmic.19526 · Cited by 135 · see citing works
Toll-Like Receptor 5 Stimulation Protects Mice from Acute Clostridium difficile Colitis
Jarchum, I., Liu, M., Lipuma, L., & Pamer, E. G. (2011) · Infection and Immunity · doi:10.1128/iai.01196-10 · Cited by 130 · see citing works
Pathogenicity and virulence of Clostridioides difficile
Buddle, J. E., & Fagan, R. P. (2022) · Virulence · doi:10.1080/21505594.2022.2150452 · Cited by 133 · see citing works
Inference of Network Dynamics and Metabolic Interactions in the Gut Microbiome
Steinway, S. N., Biggs, M. B., Loughran, T. P., Papin, J. A., & Albert, R. (2015) · PLoS Computational Biology · doi:10.1371/journal.pcbi.1004338 · Cited by 127 · see citing works
Gebhart, D., Lok, S., Clare, S., Tomas, M., Stares, M., Scholl, D., Donskey, C. J., Lawley, T. D., & Govoni, G. R. (2015) · mBio · doi:10.1128/mbio.02368-14 · Cited by 127 · see citing works
Self-citationPettit, L. J., Browne, H. P., Yu, L., Smits, W. K., Fagan, R. P., Barquist, L., Martin, M. J., Goulding, D., Duncan, S. H., Flint, H. J., et al. (2014) · BMC Genomics · doi:10.1186/1471-2164-15-160 · Cited by 127 · see citing works
Self-citationBacterial Community Interactions During Chronic Respiratory Disease
Welp, A. L., & Bomberger, J. M. (2020) · Frontiers in Cellular and Infection Microbiology · doi:10.3389/fcimb.2020.00213 · Cited by 127 · see citing works
Lawley, T. D., Clare, S., Deakin, L. J., Goulding, D., Yen, J. L., Raisen, C. L., Brandt, C., Lovell, J., Cooke, F. J., Clark, T. G., et al. (2010) · Applied and Environmental Microbiology · doi:10.1128/aem.00718-10 · Cited by 125 · see citing works
Self-citationSalmonella-Induced Mucosal Lectin RegIIIβ Kills Competing Gut Microbiota
Stelter, C., Käppeli, R., König, C., Krah, A., Hardt, W., Stecher, B., & Bumann, D. (2011) · PLoS ONE · doi:10.1371/journal.pone.0020749 · Cited by 123 · see citing works
Vincent, C., Stephens, D. A., Loo, V. G., Edens, T. J., Behr, M. A., Dewar, K., & Manges, A. R. (2013) · Microbiome · doi:10.1186/2049-2618-1-18 · Cited by 123 · see citing works
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Fang, F. C., Polage, C. R., & Wilcox, M. H. (2017) · Journal of Clinical Microbiology · doi:10.1128/jcm.02463-16 · Cited by 119 · see citing works
Peng, M., & Biswas, D. (2016) · Critical Reviews in Food Science and Nutrition · doi:10.1080/10408398.2016.1203286 · Cited by 119 · see citing works
Functional Characterization of Clostridium difficile Spore Coat Proteins
Permpoonpattana, P., Phetcharaburanin, J., Mikelsone, A., Dembek, M., Tan, S., Brisson, M., Ragione, R. M. L., Brisson, A. R., Fairweather, N. F., Hong, H. A., et al. (2013) · Journal of Bacteriology · doi:10.1128/jb.02104-12 · Cited by 116 · see citing works
Self-citationEmerging insights on intestinal dysbiosis during bacterial infections
Pham, T. A. N., & Lawley, T. D. (2014) · Current Opinion in Microbiology · doi:10.1016/j.mib.2013.12.002 · Cited by 115 · see citing works
Self-citationMcBride, S. M., & Sonenshein, A. L. (2010) · Infection and Immunity · doi:10.1128/iai.00731-10 · Cited by 115 · see citing works
Mouse Relapse Model of Clostridium difficile Infection
Sun, X., Wang, H., Zhang, Y., Chen, K., Davis, B. J., & Feng, H. (2011) · Infection and Immunity · doi:10.1128/iai.01336-10 · Cited by 115 · see citing works
Fecal microbiota transplantation: effectiveness, complexities, and lingering concerns
Pamer, E. G. (2014) · Mucosal Immunology · doi:10.1038/mi.2013.117 · Cited by 109 · see citing works
Johanesen, P., Mackin, K. E., Hutton, M. L., Awad, M. M., Larcombe, S., Amy, J., & Lyras, D. (2015) · Genes · doi:10.3390/genes6041347 · Cited by 112 · see citing works
The Enterotoxicity of Clostridium difficile Toxins
Sun, X., Savidge, T., & Feng, H. (2010) · Toxins · doi:10.3390/toxins2071848 · Cited by 110 · see citing works
Surface Layers of Clostridium difficile Endospores
Permpoonpattana, P., Tolls, E. H., Nadem, R., Tan, S., Brisson, A. R., & Cutting, S. M. (2011) · Journal of Bacteriology · doi:10.1128/jb.05182-11 · Cited by 110 · see citing works
Li, M., Liang, P., Li, Z., Wang, Y., Zhang, G., Gao, H., Shu, W., & Tang, L. (2015) · Frontiers in Microbiology · doi:10.3389/fmicb.2015.00692 · Cited by 109 · see citing works
Clostridium difficileinfection
Viswanathan, V. K., Mallozzi, M., & Vedantam, G. (2010) · Gut Microbes · doi:10.4161/gmic.1.4.12706 · Cited by 109 · see citing works
Murray, M. H., Lankau, E. W., Kidd, A. D., Welch, C. N., Ellison, T. J., Adams, H. C., Lipp, E. K., & Hernandez, S. M. (2020) · PLoS ONE · doi:10.1371/journal.pone.0220926 · Cited by 102 · see citing works
The agr Locus Regulates Virulence and Colonization Genes in Clostridium difficile 027
Martin, M. J., Clare, S., Goulding, D., Faulds‐Pain, A., Barquist, L., Browne, H. P., Pettit, L. J., Gordon Dougan, B., Lawley, T. D., & Wren, B. W. (2013) · Journal of Bacteriology · doi:10.1128/jb.00473-13 · Cited by 102 · see citing works
Self-citationType IV Pili Promote Clostridium difficile Adherence and Persistence in a Mouse Model of Infection
McKee, R. W., Aleksanyan, N., Garrett, E. M., & Tamayo, R. (2018) · Infection and Immunity · doi:10.1128/iai.00943-17 · Cited by 101 · see citing works
Reynolds, C. B., Emerson, J. E., de la Riva, L., Fagan, R. P., & Fairweather, N. F. (2011) · PLoS Pathogens · doi:10.1371/journal.ppat.1002024 · Cited by 99 · see citing works
Self-citationFrancis, M. B., Allen, C. A., & Sorg, J. A. (2015) · Journal of Bacteriology · doi:10.1128/jb.02575-14 · Cited by 98 · see citing works
Biofilm formation by Clostridium difficile
Đapa, T., & Unnikrishnan, M. (2013) · Gut Microbes · doi:10.4161/gmic.25862 · Cited by 98 · see citing works
Young, T. M., Bray, A. S., Nagpal, R. K., Caudell, D. L., Yadav, H., & Zafar, M. A. (2020) · Infection and Immunity · doi:10.1128/iai.00071-20 · Cited by 96 · see citing works
Variations in Virulence and Molecular Biology among Emerging Strains of Clostridium difficile
Hunt, J. J., & Ballard, J. D. (2013) · Microbiology and Molecular Biology Reviews · doi:10.1128/mmbr.00017-13 · Cited by 96 · see citing works
Klemm, E. J., Wong, V., & Dougan, G. (2018) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1717162115 · Cited by 93 · see citing works
Langdon, A. E., Schwartz, D. J., Bulow, C., Sun, X., Hink, T., Reske, K. A., Jones, C. R., Burnham, C. D., Dubberke, E. R., & Dantas, G. A. (2021) · Genome Medicine · doi:10.1186/s13073-021-00843-9 · Cited by 89 · see citing works
- Authors
- Lawley, T. D., Clare, S., Walker, A. W., Goulding, D., Stabler, R. A., Croucher, N., Mastroeni, P., Scott, P., Raisen, C., Mottram, L., Fairweather, N. F., Wren, B. W., Parkhill, J., & Dougan, G.
- Affiliations
- Microbial Pathogenesis Laboratory
- Wellcome Sanger Institute (GB)
- University of London (GB)
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
- Imperial College London (GB)
- Corresponding author
- Lawley, Trevor D.
- ORCID
- Venue
- Infection and Immunity
- Publisher
- American Society for Microbiology
- Published
- 2009-09
- Volume
- 77
- Issue
- 9
- Pages
- 3661-3669
- ISSN
- 0019-9567 (ISSN-L)
- 1098-5522
- PMC
- PMC2737984
- OpenAlex
- W2125181303
- Cited by
- 349
- References
- 66
- Citations by year
- 2026: 5 · 2025: 12 · 2024: 15 · 2023: 16 · 2022: 9 · 2021: 29 · 2020: 23 · 2019: 21 · 2018: 23 · 2017: 14 · 2016: 21 · 2015: 34 · 2014: 30 · 2013: 31 · 2012: 24
- FWCI
- 14.95
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Infection and Immunity (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Wellcome Trust
- Royal Society
- Engineering and Physical Sciences Research Council (EP/E500412/1)
- Topics
- Health Sciences › Medicine › Infectious Diseases › Clostridium difficile and Clostridium perfringens research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
- Health Sciences › Medicine › Infectious Diseases › Infection Control in Healthcare
- Keywords
- Clostridium difficile, asymptomatic carriage, antibiotic therapy, gut microbiota, MyD88 knockout mice, innate immunity, mucosal inflammation, infection cycle, infection control, mouse model
- MeSH terms
- Animals, Anti-Bacterial Agents, Carrier State, Enterocolitis, Pseudomembranous, Female, Intestines, Mice, Inbred C57BL, Spores, Bacterial, Clostridioides difficile, Immunocompromised Host, Mice, Myeloid Differentiation Factor 88
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