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Fecal microbe transplantation

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https://www.readbyqxmd.com/read/27799307/nkt-cell-deficient-mice-harbor-an-altered-microbiota-that-fuels-intestinal-inflammation-during-chemically-induced-colitis
#1
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...
October 31, 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
#2
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
https://www.readbyqxmd.com/read/27774001/the-significance-of-the-enteric-microbiome-on-the-development-of-childhood-disease-a-review-of-prebiotic-and-probiotic-therapies-in-disorders-of-childhood
#3
John Slattery, Derrick F MacFabe, Richard E Frye
Recent studies have highlighted the fact that the enteric microbiome, the trillions of microbes that inhabit the human digestive tract, has a significant effect on health and disease. Methods for manipulating the enteric microbiome, particularly through probiotics and microbial ecosystem transplantation, have undergone some study in clinical trials. We review some of the evidence for microbiome alteration in relation to childhood disease and discuss the clinical trials that have examined the manipulation of the microbiome in an effort to prevent or treat childhood disease with a primary focus on probiotics, prebiotics, and/or synbiotics (ie, probiotics + prebiotics)...
2016: Clinical Medicine Insights. Pediatrics
https://www.readbyqxmd.com/read/27418314/gut-microbiota-directs-ppar%C3%AE-driven-reprogramming-of-the-liver-circadian-clock-by-nutritional-challenge
#4
Mari Murakami, Paola Tognini, Yu Liu, Kristin L Eckel-Mahan, Pierre Baldi, Paolo Sassone-Corsi
The liver circadian clock is reprogrammed by nutritional challenge through the rewiring of specific transcriptional pathways. As the gut microbiota is tightly connected to host metabolism, whose coordination is governed by the circadian clock, we explored whether gut microbes influence circadian homeostasis and how they distally control the peripheral clock in the liver. Using fecal transplant procedures we reveal that, in response to high-fat diet, the gut microbiota drives PPARγ-mediated activation of newly oscillatory transcriptional programs in the liver...
September 2016: EMBO Reports
https://www.readbyqxmd.com/read/27327243/role-of-the-microbiome-probiotics-and-dysbiosis-therapy-in-critical-illness
#5
Paul E Wischmeyer, Daniel McDonald, Rob Knight
PURPOSE OF REVIEW: Loss of 'health-promoting' microbes and overgrowth of pathogenic bacteria (dysbiosis) in ICU is believed to contribute to nosocomial infections, sepsis, and organ failure (multiple organ dysfunction syndrome). This review discusses new understanding of ICU dysbiosis, new data for probiotics and fecal transplantation in ICU, and new data characterizing the ICU microbiome. RECENT FINDINGS: ICU dysbiosis results from many factors, including ubiquitous antibiotic use and overuse...
August 2016: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/27312892/microbial-community-transplant-results-in-increased-and-long-term-oxalate-degradation
#6
Aaron W Miller, Kelly F Oakeson, Colin Dale, M Denise Dearing
Gut microbes are essential for the degradation of dietary oxalate, and this function may play a role in decreasing the incidence of kidney stones. However, many oxalate-degrading bacteria are susceptible to antibiotics and the use of oxalate-degrading probiotics has only led to an ephemeral reduction in urinary oxalate. The objective of the current study was to determine the efficacy of using whole-community microbial transplants from a wild mammalian herbivore, Neotoma albigula, to increase oxalate degradation over the long term in the laboratory rat, Rattus norvegicus...
August 2016: Microbial Ecology
https://www.readbyqxmd.com/read/27286042/long-term-microbiota-and-virome-in-a-z%C3%A3-rich-patient-after-fecal-transplantation-against-clostridium-difficile-infection
#7
Felix Broecker, Jochen Klumpp, Karin Moelling
Fecal microbiota transplantation (FMT) is an emerging therapeutic option for Clostridium difficile infections that are refractory to conventional treatment. FMT introduces fecal microbes into the patient's intestine that prevent the recurrence of C. difficile, leading to rapid expansion of bacteria characteristic of healthy microbiota. However, the long-term effects of FMT remain largely unknown. The C. difficile patient described in this paper revealed protracted microbiota adaptation processes from 6 to 42 months post-FMT...
May 2016: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/27183608/tgf-%C3%AE-signaling-in-dendritic-cells-governs-colonic-homeostasis-by-controlling-epithelial-differentiation-and-the-luminal-microbiota
#8
Sozaburo Ihara, Yoshihiro Hirata, Takako Serizawa, Nobumi Suzuki, Kosuke Sakitani, Hiroto Kinoshita, Yoku Hayakawa, Hayato Nakagawa, Hideaki Ijichi, Keisuke Tateishi, Kazuhiko Koike
Dendritic cells (DCs) mediate host immune responses to gut microbes and play critical roles in inflammatory bowel disease. In this study, we examined the role of TGF-β signaling in DCs in colonic homeostasis. CD11c-cre Tgfbr2(fl/fl) mice developed spontaneous colitis, and CD11c-cre Tgfbr2(fl/+) mice exhibited susceptibility to dextran sulfate sodium-induced colitis. Colitis in these mice was characterized by goblet cell depletion and dysbiosis caused by Enterobacteriaceae enrichment. Wild-type mice gavaged with Enterobacteriaceae from CD11c-cre Tgfbr2(fl/fl) mice feces showed severe colitis after dextran sulfate sodium treatment, whereas those treated with Notch inhibitor exhibited attenuated colonic injury with increased goblet cell numbers, thickened mucus layer, and fewer fecal Enterobacteriaceae Wild-type mice transplanted with CD11c-cre Tgfbr2(fl/fl) bone marrow developed colitis showing increased Jagged1 and Jagged2 in DCs, increased Hes1 levels in epithelium, and goblet cell depletion...
June 1, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27161356/how-to-manipulate-the-microbiota-fecal-microbiota-transplantation
#9
REVIEW
Susana Fuentes, Willem M de Vos
Fecal microbiota transplantation (FMT) is a rather straightforward therapy that manipulates the human gastrointestinal (GI) microbiota, by which a healthy donor microbiota is transferred into an existing but disturbed microbial ecosystem. This is a natural process that occurs already at birth; infants are rapidly colonized by a specific microbial community, the composition of which strongly depends on the mode of delivery and which therefore most likely originates from the mother (Palmer et al. 2007; Tannock et al...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27133778/microbial-therapeutic-interventions
#10
REVIEW
Nicole G Grady, Elaine O Petrof, Erika C Claud
The microbiome comprises all the microbes living in and on the human body. Human cells are greatly outnumbered by bacterial cells; thus human health depends on the health of the microbial ecosystem. For the immature preterm infant, the microbiome also influences intestinal and immune system development. This has implications for short term morbidities such as neonatal necrotizing enterocolitis and sepsis, but also long term health outcomes. Optimization of the preterm infant microbiome is a growing topic of interest...
December 2016: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27121964/pretreatment-gut-microbiome-predicts-chemotherapy-related-bloodstream-infection
#11
Emmanuel Montassier, Gabriel A Al-Ghalith, Tonya Ward, Stephane Corvec, Thomas Gastinne, Gilles Potel, Phillipe Moreau, Marie France de la Cochetiere, Eric Batard, Dan Knights
BACKGROUND: Bacteremia, or bloodstream infection (BSI), is a leading cause of death among patients with certain types of cancer. A previous study reported that intestinal domination, defined as occupation of at least 30 % of the microbiota by a single bacterial taxon, is associated with BSI in patients undergoing allo-HSCT. However, the impact of the intestinal microbiome before treatment initiation on the risk of subsequent BSI remains unclear. Our objective was to characterize the fecal microbiome collected before treatment to identify microbes that predict the risk of BSI...
2016: Genome Medicine
https://www.readbyqxmd.com/read/27074706/the-effects-of-antibiotics-on-the-microbiome-throughout-development-and-alternative-approaches-for-therapeutic-modulation
#12
REVIEW
Amy Langdon, Nathan Crook, Gautam Dantas
The widespread use of antibiotics in the past 80 years has saved millions of human lives, facilitated technological progress and killed incalculable numbers of microbes, both pathogenic and commensal. Human-associated microbes perform an array of important functions, and we are now just beginning to understand the ways in which antibiotics have reshaped their ecology and the functional consequences of these changes. Mounting evidence shows that antibiotics influence the function of the immune system, our ability to resist infection, and our capacity for processing food...
April 13, 2016: Genome Medicine
https://www.readbyqxmd.com/read/27058556/the-intestinal-microbiota-in-metabolic-disease
#13
REVIEW
Anni Woting, Michael Blaut
Gut bacteria exert beneficial and harmful effects in metabolic diseases as deduced from the comparison of germfree and conventional mice and from fecal transplantation studies. Compositional microbial changes in diseased subjects have been linked to adiposity, type 2 diabetes and dyslipidemia. Promotion of an increased expression of intestinal nutrient transporters or a modified lipid and bile acid metabolism by the intestinal microbiota could result in an increased nutrient absorption by the host. The degradation of dietary fiber and the subsequent fermentation of monosaccharides to short-chain fatty acids (SCFA) is one of the most controversially discussed mechanisms of how gut bacteria impact host physiology...
2016: Nutrients
https://www.readbyqxmd.com/read/27025836/fecal-microbial-transplants-reduce-antibiotic-resistant-genes-in-patients-with-recurrent-clostridium-difficile-infection
#14
Braden Millan, Heekuk Park, Naomi Hotte, Olivier Mathieu, Pierre Burguiere, Thomas A Tompkins, Dina Kao, Karen L Madsen
BACKGROUND: Recurrent Clostridium difficile infection (RCDI) is associated with repeated antibiotic treatment and the enhanced growth of antibiotic-resistant microbes. This study tested the hypothesis that patients with RCDI would harbor large numbers of antibiotic-resistant microbes and that fecal microbiota transplantation (FMT) would reduce the number of antibiotic-resistant genes. METHODS: In a single center study, patients with RCDI (n = 20) received FMT from universal donors via colonoscopy...
June 15, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27025251/transfer-of-viral-communities-between-human-individuals-during-fecal-microbiota-transplantation
#15
Christel Chehoud, Anatoly Dryga, Young Hwang, Dorottya Nagy-Szakal, Emily B Hollister, Ruth Ann Luna, James Versalovic, Richard Kellermayer, Frederic D Bushman
UNLABELLED: Fecal microbiota transplantation (FMT) is a highly effective treatment for refractoryClostridium difficileinfections. However, concerns persist about unwanted cotransfer of pathogenic microbes such as viruses. Here we studed FMT from a single healthy human donor to three pediatric ulcerative colitis patients, each of whom received a course of 22 to 30 FMT treatments. Viral particles were purified from donor and recipient stool samples and sequenced; the reads were then assembled into contigs corresponding to viral genomes or partial genomes...
2016: MBio
https://www.readbyqxmd.com/read/26925392/the-new-era-of-treatment-for-obesity-and-metabolic-disorders-evidence-and-expectations-for-gut-microbiome-transplantation
#16
REVIEW
Thilini N Jayasinghe, Valentina Chiavaroli, David J Holland, Wayne S Cutfield, Justin M O'Sullivan
Key Points The microbiome has been implicated in the development of obesity.Conventional therapeutic methods have limited effectiveness for the treatment of obesity and prevention of related complications.Gut microbiome transplantation may represent an alternative and effective therapy for the treatment of obesity. Obesity has reached epidemic proportions. Despite a better understanding of the underlying pathophysiology and growing treatment options, a significant proportion of obese patients do not respond to treatment...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/26832403/host-microbiota-interactions-in-the-pathogenesis-of-antibiotic-associated-diseases
#17
Joshua S Lichtman, Jessica A Ferreyra, Katharine M Ng, Samuel A Smits, Justin L Sonnenburg, Joshua E Elias
Improved understanding of the interplay between host and microbes stands to illuminate new avenues for disease diagnosis, treatment, and prevention. Here, we provide a high-resolution view of the dynamics between host and gut microbiota during antibiotic-induced intestinal microbiota depletion, opportunistic Salmonella typhimurium and Clostridium difficile pathogenesis, and recovery from these perturbed states in a mouse model. Host-centric proteome and microbial community profiles provide a nuanced longitudinal view, revealing the interdependence between host and microbiota in evolving dysbioses...
February 9, 2016: Cell Reports
https://www.readbyqxmd.com/read/26770128/part-2-treatments-for-chronic-gastrointestinal-disease-and-gut-dysbiosis
#18
REVIEW
Matthew J Bull, Nigel T Plummer
Part 1 of this review discussed the connection between the human gut microbiota and health. Manipulation of the intestinal microbiota holds promise as a prospective therapy for gut dysbiosis, ameliorating symptoms of gastrointestinal and systemic diseases and restoring health. The concept of probiotics has existed for more than 100 y, and modern research methods have established sound scientific support for the perceived benefits of probiotic bacteria, which mainly include Lactobacillus and Bifidobacterium genera...
February 2015: Integrative Medicine
https://www.readbyqxmd.com/read/26764595/the-host-shapes-the-gut-microbiota-via-fecal-microrna
#19
Shirong Liu, Andre Pires da Cunha, Rafael M Rezende, Ron Cialic, Zhiyun Wei, Lynn Bry, Laurie E Comstock, Roopali Gandhi, Howard L Weiner
The host gut microbiota varies across species and individuals but is relatively stable over time within an individual. How the host selectively shapes the microbiota is largely unclear. Here, we show that fecal microRNA (miRNA)-mediated inter-species gene regulation facilitates host control of the gut microbiota. miRNAs are abundant in mouse and human fecal samples and present within extracellular vesicles. Cell-specific loss of the miRNA-processing enzyme, Dicer, identified intestinal epithelial cells (IEC) and Hopx-positive cells as predominant fecal miRNA sources...
January 13, 2016: Cell Host & Microbe
https://www.readbyqxmd.com/read/26616138/fecal-transplantation-successfully-treats-recurrent-d-lactic-acidosis-in-a-child-with-short-bowel-syndrome
#20
Zev H Davidovics, Katherine Vance, Nancy Etienne, Jeffrey S Hyams
D-lactic acidosis can occur in patients with short bowel syndrome (SBS) when excessive malabsorbed carbohydrate (CHO) enters the colon and is metabolized by colonic bacteria to D-lactate. D-lactate can be absorbed systemically, and increased serum levels are associated with central nervous system toxicity manifested by confusion, ataxia, and slurred speech. Current therapy, usually directed toward suppressing intestinal bacterial overgrowth and limiting ingested CHO, is not always successful. Fecal transplantation, the infusion of donor feces into a recipient's intestinal tract, has been used for decades to treat recurrent Clostridium difficile infection, and case reports document its use in the successful treatment of constipation, diarrhea, and abdominal pain...
November 29, 2015: JPEN. Journal of Parenteral and Enteral Nutrition
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