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Fecal microbe transplantation

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https://www.readbyqxmd.com/read/28866242/to-engraft-or-not-to-engraft-an-ecological-framework-for-gut-microbiome-modulation-with-live-microbes
#1
REVIEW
Jens Walter, María X Maldonado-Gómez, Inés Martínez
Strategies aimed at modulating the gut microbiota by using live microbes range from single strains (probiotics or live biotherapeutics) to whole non-defined fecal transplants. Although often clinically efficacious, our understanding on how microbial-based strategies modulate gut microbiome composition and function is vastly incomplete. In this review, we present a framework based on ecological theory that provides mechanistic explanations for the findings obtained in studies that attempted to modulate the gut microbiota of humans and animals using live microbes...
August 31, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28769880/human-gut-microbiota-toward-an-ecology-of-disease
#2
REVIEW
Susannah Selber-Hnatiw, Belise Rukundo, Masoumeh Ahmadi, Hayfa Akoubi, Hend Al-Bizri, Adelekan F Aliu, Tanyi U Ambeaghen, Lilit Avetisyan, Irmak Bahar, Alexandra Baird, Fatema Begum, Hélène Ben Soussan, Virginie Blondeau-Éthier, Roxane Bordaries, Helene Bramwell, Alicia Briggs, Richard Bui, Matthew Carnevale, Marisa Chancharoen, Talia Chevassus, Jin H Choi, Karyne Coulombe, Florence Couvrette, Samantha D'Abreau, Meghan Davies, Marie-Pier Desbiens, Tamara Di Maulo, Sean-Anthony Di Paolo, Sabrina Do Ponte, Priscyla Dos Santos Ribeiro, Laure-Anne Dubuc-Kanary, Paola K Duncan, Frédérique Dupuis, Sara El-Nounou, Christina N Eyangos, Natasha K Ferguson, Nancy R Flores-Chinchilla, Tanya Fotakis, Mariam Gado Oumarou H D, Metodi Georgiev, Seyedehnazanin Ghiassy, Natalija Glibetic, Julien Grégoire Bouchard, Tazkia Hassan, Iman Huseen, Marlon-Francis Ibuna Quilatan, Tania Iozzo, Safina Islam, Dilan B Jaunky, Aniththa Jeyasegaram, Marc-André Johnston, Matthew R Kahler, Kiranpreet Kaler, Cedric Kamani, Hessam Karimian Rad, Elisavet Konidis, Filip Konieczny, Sandra Kurianowicz, Philippe Lamothe, Karina Legros, Sebastien Leroux, Jun Li, Monica E Lozano Rodriguez, Sean Luponio-Yoffe, Yara Maalouf, Jessica Mantha, Melissa McCormick, Pamela Mondragon, Thivaedee Narayana, Elizaveta Neretin, Thi T T Nguyen, Ian Niu, Romeo B Nkemazem, Martin O'Donovan, Matthew Oueis, Stevens Paquette, Nehal Patel, Emily Pecsi, Jackie Peters, Annie Pettorelli, Cassandra Poirier, Victoria R Pompa, Harshvardhan Rajen, Reginald-Olivier Ralph, Josué Rosales-Vasquez, Daria Rubinshtein, Surya Sakr, Mohammad S Sebai, Lisa Serravalle, Fily Sidibe, Ahnjana Sinnathurai, Dominique Soho, Adithi Sundarakrishnan, Veronika Svistkova, Tsolaye E Ugbeye, Megan S Vasconcelos, Michael Vincelli, Olga Voitovich, Pamela Vrabel, Lu Wang, Maryse Wasfi, Cong Y Zha, Chiara Gamberi
Composed of trillions of individual microbes, the human gut microbiota has adapted to the uniquely diverse environments found in the human intestine. Quickly responding to the variances in the ingested food, the microbiota interacts with the host via reciprocal biochemical signaling to coordinate the exchange of nutrients and proper immune function. Host and microbiota function as a unit which guards its balance against invasion by potential pathogens and which undergoes natural selection. Disturbance of the microbiota composition, or dysbiosis, is often associated with human disease, indicating that, while there seems to be no unique optimal composition of the gut microbiota, a balanced community is crucial for human health...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28677158/update-on-intestinal-microbiota-in-crohn-s-disease-2017-mechanisms-clinical-application-adverse-reactions-and-outlook
#3
REVIEW
Zhaohua Shen, Changxin Zhu, Yongsheng Quan, Wei Yuan, Shuai Wu, Zhenyu Yang, Weiwei Luo, Bei Tan, Xiaoyan Wang
The pathogenesis of CD is complex and it is thought to be associated with the environment, immune, hereditary, microbe and other factors. If the balance between the host and the intestinal microbes in CD patients was broken, immune-inflammatory response of susceptible individuals might be triggered. Probiotics could improve the intestinal microbial flora balance and treat human effectively. There are several new mechanisms which might explain the role of probiotics. Fecal microbiota transplantation (FMT) is becoming more and more attractive in treating a large amount of digestive system diseases which are related to the dysbiosis of intestinal microbiota...
July 5, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28649413/identification-of-donor-microbe-species-that-colonize-and-persist-long-term-in-the-recipient-after-fecal-transplant-for-recurrent-clostridium-difficile
#4
Ranjit Kumar, Nengjun Yi, Degui Zhi, Peter Eipers, Kelly T Goldsmith, Paula Dixon, David K Crossman, Michael R Crowley, Elliot J Lefkowitz, J Martin Rodriguez, Casey D Morrow
Fecal microbiota transplantation has been shown to be an effective treatment for patients with recurrent C. difficile colitis. Although fecal microbiota transplantation helps to re-establish a normal gut function in patients, the extent of the repopulation of the recipient microbial community varies. To further understand this variation, it is important to determine the fate of donor microbes in the patients following fecal microbiota transplantation. We have developed a new method that utilizes the unique single nucleotide variants of gut microbes to accurately identify microbes in paired fecal samples from the same individual taken at different times...
2017: NPJ Biofilms and Microbiomes
https://www.readbyqxmd.com/read/28588566/gut-bacteria-missing-in-severe-acute-malnutrition-can-we-identify-potential-probiotics-by-culturomics
#5
Maryam Tidjani Alou, Matthieu Million, Sory I Traore, Donia Mouelhi, Saber Khelaifia, Dipankar Bachar, Aurelia Caputo, Jeremy Delerce, Souleymane Brah, Daouda Alhousseini, Cheikh Sokhna, Catherine Robert, Bouli A Diallo, Aldiouma Diallo, Philippe Parola, Michael Golden, Jean-Christophe Lagier, Didier Raoult
Severe acute malnutrition is the world-leading cause of children under-five's death. Recent metagenomics studies have established a link between gut microbiota and severe acute malnutrition, describing an immaturity with a striking depletion in oxygen-sensitive prokaryotes. Amoxicillin and therapeutic diet cure most of the children with severe acute malnutrition but an irreversible disruption of the gut microbiota is suspected in the refractory and most severe cases. In these cases, therapeutic diet may be unable to reverse the microbiota alteration leading to persistent impaired development or death...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28572754/functional-amplification-and-preservation-of-human-gut-microbiota
#6
Nadia Gaci, Prem Prashant Chaudhary, William Tottey, Monique Alric, Jean-François Brugère
Background: The availability of fresh stool samples is a prerequisite in most gut microbiota functional studies. Objective: Strategies for amplification and long-term gut microbiota preservation from fecal samples would favor sample sharing, help comparisons and reproducibility over time and between laboratories, and improve the safety and ethical issues surrounding fecal microbiota transplantations. Design: Taking advantage of in vitro gut-simulating systems, we amplified the microbial repertoire of a fresh fecal sample and assessed the viability and resuscitation of microbes after preservation with some common intracellular and extracellular acting cryoprotective agents (CPAs), alone and in different combinations...
2017: Microbial Ecology in Health and Disease
https://www.readbyqxmd.com/read/28542523/impact-of-maintenance-immunosuppressive-therapy-on-the-fecal-microbiome-of-renal-transplant-recipients-comparison-between-an-everolimus-and-a-standard-tacrolimus-based-regimen
#7
COMPARATIVE STUDY
Gianluigi Zaza, Alessandra Dalla Gassa, Giovanna Felis, Simona Granata, Sandra Torriani, Antonio Lupo
BACKGROUND: The gut microbiome is the full set of microbes living in the gastrointestinal tract and is emerging as an important dynamic/fluid system that, if altered by environmental, dietetic or pharmacological factors, could considerably influence drug response. However, the immunosuppressive drug-induced modifications of this system are still poorly defined. METHODS: We employed an innovative bioinformatics approach to assess differences in the whole-gut microbial metagenomic profile of 20 renal transplant recipients undergoing maintenance treatment with two different immunosuppressive protocols...
2017: PloS One
https://www.readbyqxmd.com/read/28541799/limited-engraftment-of-donor-microbiome-via-one-time-fecal-microbial-transplantation-in-treated-hiv-infected-individuals
#8
Ivan Vujkovic-Cvijin, Rachel L Rutishauser, Montha Pao, Peter W Hunt, Susan V Lynch, Joseph M McCune, Ma Somsouk
Many HIV-infected individuals on antiretroviral therapy (ART) exhibit persistent systemic inflammation, which predicts morbidity and mortality. ART-treated subjects concurrently exhibit marked compositional alterations in the gut bacterial microbiota and the degree of dysbiosis correlates with systemic inflammation. Whether interventions to modulate the microbiome can affect systemic inflammation is unknown. An open-label fecal microbial transplantation (FMT) was delivered by colonoscopy to asymptomatic HIV-infected ART-suppressed individuals without antibiotic pre-treatment...
May 25, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28286571/we-are-not-alone-a-case-for-the-human-microbiome-in-extra-intestinal-diseases
#9
EDITORIAL
S Shivaji
BACKGROUND: "Dysbiosis" in the gut microbiome has been implicated in auto-immune diseases, in inflammatory diseases, in some cancers and mental disorders. The challenge is to unravel the cellular and molecular basis of dysbiosis so as to understand the disease manifestation. MAIN BODY: Next generation sequencing and genome enabled technologies have led to the establishment of the composition of gut microbiomes and established that "dysbiosis" is the cause of several diseases...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/28280484/variable-colonization-after-reciprocal-fecal-microbiota-transfer-between-mice-with-low-and-high-richness-microbiota
#10
Aaron C Ericsson, Alexa R Personett, Giedre Turner, Rebecca A Dorfmeyer, Craig L Franklin
Several associations have been made between characteristics of the resident gut microbiota and human health and disease susceptibility. Animal models provide the means to test these correlations prospectively and evaluate causality. Experimental fecal microbiota transfer (FMT), or the intentional transplantation of gut microbes into recipient mice depleted of their autochthonous microbes with antibiotics, is a commonly used method of testing these relationships. The true completeness of microbial transfer through such procedures is poorly documented in the literature, particularly in the context of reciprocal transfer of microbes between recipient and donor mice harboring microbial populations of differing richness and diversity...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28125667/profiling-living-bacteria-informs-preparation-of-fecal-microbiota-transplantations
#11
Nathaniel D Chu, Mark B Smith, Allison R Perrotta, Zain Kassam, Eric J Alm
Fecal microbiota transplantation is a compelling treatment for recurrent Clostridium difficile infections, with potential applications against other diseases associated with changes in gut microbiota. But variability in fecal bacterial communities-believed to be the therapeutic agent-can complicate or undermine treatment efficacy. To understand the effects of transplant preparation methods on living fecal microbial communities, we applied a DNA-sequencing method (PMA-seq) that uses propidium monoazide (PMA) to differentiate between living and dead fecal microbes, and we created an analysis pipeline to identify individual bacteria that change in abundance between samples...
2017: PloS One
https://www.readbyqxmd.com/read/28115022/gut-microbial-degradation-of-organophosphate-insecticides-induces-glucose-intolerance-via-gluconeogenesis
#12
Ganesan Velmurugan, Tharmarajan Ramprasath, Krishnan Swaminathan, Gilles Mithieux, Jeyaprakash Rajendhran, Mani Dhivakar, Ayothi Parthasarathy, D D Venkatesh Babu, Leishman John Thumburaj, Allen J Freddy, Vasudevan Dinakaran, Shanavas Syed Mohamed Puhari, Balakrishnan Rekha, Yacob Jenifer Christy, Sivakumar Anusha, Ganesan Divya, Kannan Suganya, Boominathan Meganathan, Narayanan Kalyanaraman, Varadaraj Vasudevan, Raju Kamaraj, Maruthan Karthik, Balakrishnan Jeyakumar, Albert Abhishek, Eldho Paul, Muthuirulan Pushpanathan, Rajamani Koushick Rajmohan, Kumaravel Velayutham, Alexander R Lyon, Subbiah Ramasamy
BACKGROUND: Organophosphates are the most frequently and largely applied insecticide in the world due to their biodegradable nature. Gut microbes were shown to degrade organophosphates and cause intestinal dysfunction. The diabetogenic nature of organophosphates was recently reported but the underlying molecular mechanism is unclear. We aimed to understand the role of gut microbiota in organophosphate-induced hyperglycemia and to unravel the molecular mechanism behind this process. RESULTS: Here we demonstrate a high prevalence of diabetes among people directly exposed to organophosphates in rural India (n = 3080)...
January 24, 2017: Genome Biology
https://www.readbyqxmd.com/read/28113162/omics-tech-gut-on-a-chip-and-bacterial-engineering-new-approaches-for-treating-inflammatory-bowel-diseases
#13
Leslie Mertz
It was six years ago that fecal transplantation first received prominent media attention and the public began to fully appreciate that the bacteria and other microbes in their bodies could have a real impact on health.
September 2016: IEEE Pulse
https://www.readbyqxmd.com/read/28092309/microbiota-targeted-therapies-on-the-intensive-care-unit
#14
Bastiaan W Haak, Marcel Levi, W Joost Wiersinga
PURPOSE OF REVIEW: The composition and diversity of the microbiota of the human gut, skin, and several other sites is severely deranged in critically ill patients on the ICU, and it is likely that these disruptions can negatively affect outcome. We here review new and ongoing studies that investigate the use of microbiota-targeted therapeutics in the ICU, and provide recommendations for future research. RECENT FINDINGS: Practically every intervention in the ICU as well as the physiological effects of critical illness itself can have a profound impact on the gut microbiota...
April 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28042926/the-potential-impact-of-gut-microbiota-on-your-health-current-status-and-future-challenges
#15
REVIEW
Stitaya Sirisinha
Our health and probably also our behaviors and mood depend not only on what we eat or what we do (lifestyle behaviors), but also on what we host. It is well established for decades that all vertebrates including humans are colonized by a wide array of bacteria, fungi, eukaryotic parasites and viruses, and that, at steady state (homeostasis), this community of microbes establishes a friendly mutual relationship with the host. The term microbiota was originally meant to represent an ecological community of commensals and potentially pathogenic microbes that live within our bodies, but it is now used interchangeably with the term microbiome which was initially meant to represent a collective genome of the microbiota...
December 2016: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/28008842/-microbiota-and-representations-of-the-human-body
#16
Betty Dodet
Although the presence of an intestinal flora has been known for a long time, the discovery of the role of gut microbiota in human health and disease has been widely recognized as one of the most important advances in the recent years. Chronic diseases may result from dysbiosis, i.e. a disruption of the balance within the bacterial population hosted by the human body. These developments open new prospects in terms of prevention and treatment, including the design of adapted diets, the development of functional foods and fecal transplantation...
November 2016: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/27997854/the-emerging-metabolic-view-of-clostridium-difficile-pathogenesis
#17
REVIEW
Andrew J Hryckowian, Kali M Pruss, Justin L Sonnenburg
It is widely accepted that Clostridium difficile exploits dysbiosis and leverages inflammation to thrive in the gut environment, where it can asymptomatically colonize humans or cause a toxin-mediated disease ranging in severity from frequent watery diarrhea to pseudomembranous colitis or toxic megacolon. Here, we synthesize recent findings from the gut microbiota and enteric pathogenesis fields to inform the next steps toward a better understanding of C. difficile infection (CDI). In this review, we present a model in which the lifestyle of C...
February 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/27965663/alteration-in-the-gut-microbiota-provokes-susceptibility-to-tuberculosis
#18
Nargis Khan, Aurobind Vidyarthi, Sajid Nadeem, Shikha Negi, Girish Nair, Javed N Agrewala
The microbiota that resides in the gastrointestinal tract provides essential health benefits to the host. In particular, they regulate immune homeostasis. Recently, several evidences indicate that alteration in the gut microbial community can cause infectious and non-infectious diseases. Tuberculosis (TB) is the most devastating disease, inflicting mortality and morbidity. It remains unexplored, whether changes in the gut microbiota can provoke or prevent TB. In the current study, we have demonstrated the antibiotics driven changes in the gut microbial composition and their impact on the survival of Mycobacterium tuberculosis (Mtb) in the lungs, liver, and spleen of infected mice, compared to those with intact microbiota...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27799307/nkt-cell-deficient-mice-harbor-an-altered-microbiota-that-fuels-intestinal-inflammation-during-chemically-induced-colitis
#19
Thirumahal Selvanantham, Qiaochu Lin, Cynthia Xinyi Guo, Anuradha Surendra, Stephanie Fieve, Nichole K Escalante, David S Guttman, Catherine J Streutker, Susan J Robertson, Dana J Philpott, Thierry Mallevaey
NKT cells are unconventional T cells that respond to self and microbe-derived lipid and glycolipid Ags presented by the CD1d molecule. Invariant NKT (iNKT) cells influence immune responses in numerous diseases. Although only a few studies have examined their role during intestinal inflammation, it appears that iNKT cells protect from Th1-mediated inflammation but exacerbate Th2-mediated inflammation. Studies using iNKT cell-deficient mice and chemically induced dextran sodium sulfate (DSS) colitis have led to inconsistent results...
December 1, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27795585/the-gut-microbiome-and-its-role-in-obesity
#20
Cindy D Davis
The human body is host to a vast number of microbes, including bacterial, fungal and protozoal microoganisms, which together constitute our microbiota. Evidence is emerging that the intestinal microbiome is intrinsically linked with overall health, including obesity risk. Obesity and obesity-related metabolic disorders are characterized by specific alterations in the composition and function of the human gut microbiome. Mechanistic studies have indicated that the gastrointestinal microbiota can influence both sides of the energy balance equation; namely, as a factor influencing energy utilization from the diet and as a factor that influences host genes that regulate energy expenditure and storage...
July 2016: Nutrition Today
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