keyword
MENU ▼
Read by QxMD icon Read
search

Microbiota and IBD

keyword
https://www.readbyqxmd.com/read/28445725/nlrp6-protects-il10-mice-from-colitis-by-limiting-colonization-of-akkermansia-muciniphila
#1
Sergey S Seregin, Natasha Golovchenko, Bryan Schaf, Jiachen Chen, Nicholas A Pudlo, Jonathan Mitchell, Nielson T Baxter, Lili Zhao, Patrick D Schloss, Eric C Martens, Kathryn A Eaton, Grace Y Chen
Dysfunction in host immune responses and pathologic alterations in the gut microbiota, referred to as dysbiosis, can both contribute to the development of inflammatory bowel disease (IBD). However, it remains unclear how specific changes in host immunity or the microbiota cause disease. We previously demonstrated that the loss of the innate immune receptor NLRP6 in mice resulted in impaired production of interleukin-18 (IL-18) and increased susceptibility to epithelial-induced injury. Here, we show that NLRP6 is important for suppressing the development of spontaneous colitis in the Il10(-/-) mice model of IBD and that NLRP6 deficiency results in the enrichment of Akkermansia muciniphila...
April 25, 2017: Cell Reports
https://www.readbyqxmd.com/read/28439048/faecal-volatile-organic-compounds-analysis-using-field-asymmetric-ion-mobility-spectrometry-non-invasive-diagnostics-in-paediatric-inflammatory-bowel-disease
#2
Nora van Gaal, Rozanne Lakenman, James Covington, Richard Savage, Evelien de Groot, Marije Bomers, Marc Benninga, Chris Mulder, Nanne de Boer, Tim de Meij
Inflammatory bowel disease (IBD), including Crohn's disease (CD) and ulcerative colitis (UC), remains challenging to diagnose. Diagnostic work up carries a high burden, especially in paediatric patients, due to invasive endoscopic procedures. IBD is associated with alterations in intestinal microbiota composition. Faecal volatile organic compounds (VOCs) reflect gut microbiota composition. Aim of this study was to assess the diagnostic accuracy of faecal VOC profiling as non-invasive diagnostic biomarker for paediatric IBD...
April 25, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28428272/hur-small-molecule-inhibitor-elicits-differential-effects-in-adenomatosis-polyposis-and-colorectal-carcinogenesis
#3
Michaela Lang, David Berry, Katharina Passecker, Ildiko Mesteri, Sabin Bhuju, Florian Ebner, Vitaly Sedlyarov, Rayko Evstatiev, Kyle Dammann, Alexander Loy, Orest Kuzyk, Pavel Kovarik, Vineeta Khare, Martin Beibel, Guglielmo Roma, Nicole Meisner-Kober, Christoph Gasche
HuR is an RNA-binding protein implicated in immune homeostasis and various cancers, including colorectal cancer. HuR binding to AU-rich elements within the 3' untranslated region of mRNAs encoding oncogenes, growth factors, and various cytokines leads message stability and translation. In this study, we evaluated HuR as a small-molecule target for preventing colorectal cancer in high-risk groups such as those with familial adenomatosis polyposis (FAP) or inflammatory bowel disease (IBD). In human specimens, levels of cytoplasmic HuR were increased in colonic epithelial cells from patients with IBD, IBD-cancer, FAP-adenoma, and colorectal cancer, but not in patients with IBD-dysplasia...
February 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28427452/modeling-environmental-risk-factors-of-autism-in-mice-induces-ibd-related-gut-microbial-dysbiosis-and-hyperserotonemia
#4
Joon Seo Lim, Mi Young Lim, Yongbin Choi, GwangPyo Ko
Autism spectrum disorder (ASD) is a range of neurodevelopmental conditions that are sharply increasing in prevalence worldwide. Intriguingly, ASD is often accompanied by an array of systemic aberrations including (1) increased serotonin, (2) various modes of gastrointestinal disorders, and (3) inflammatory bowel disease (IBD), albeit the underlying cause for such comorbidities remains uncertain. Also, accumulating number of studies report that the gut microbial composition is significantly altered in children with ASD or patients with IBD...
April 20, 2017: Molecular Brain
https://www.readbyqxmd.com/read/28422780/understanding-the-gut-microbiota-in-inflammatory-and-functional-gastrointestinal-diseases
#5
Johanna Sundin, Lena Öhman, Magnus Simren
OBJECTIVE: During the last decade experimental and observational studies have shown that patients with Inflammatory Bowel Disease (IBD) and Irritable Bowel Syndrome (IBS) may have an altered intestinal microbial composition compared to healthy subjects. However, no uniform microbial signature has as yet been detected for either IBD or IBS. This review summarizes the current knowledge of microbial dysbiosis, and its potential relationship to the pathophysiology in IBD and IBS. METHODS: A selective review was conducted to summarize the current knowledge of gut microbiota in the pathophysiology of IBD and IBS...
April 18, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28412519/vitamin-d-signaling-in-intestinal-innate-immunity-and-homeostasis
#6
REVIEW
Vassil Dimitrov, John H White
The lumen of the gut hosts a plethora of microorganisms that participate in food assimilation, inactivation of harmful particles and in vitamin synthesis. On the other hand, enteric flora, a number of food antigens, and toxins are capable of triggering immune responses causing inflammation, which, when unresolved, may lead to chronic conditions such as inflammatory bowel disease (IBD). It is important, therefore, to contain the gut bacteria within the lumen, control microbial load and composition, as well as ensure adequate innate and adaptive immune responses to pathogenic threats...
April 12, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28405140/diet-and-microbiota-in-inflammatory-bowel-disease-the-gut-in-disharmony
#7
REVIEW
Davy C M Rapozo, Claudio Bernardazzi, Heitor Siffert Pereira de Souza
Bacterial colonization of the gut shapes both the local and the systemic immune response and is implicated in the modulation of immunity in both healthy and disease states. Recently, quantitative and qualitative changes in the composition of the gut microbiota have been detected in Crohn's disease and ulcerative colitis, reinforcing the hypothesis of dysbiosis as a relevant mechanism underlying inflammatory bowel disease (IBD) pathogenesis. Humans and microbes have co-existed and co-evolved for a long time in a mutually beneficial symbiotic association essential for maintaining homeostasis...
March 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28402995/etiopathogenesis-of-inflammatory-bowel-disease-today-and-tomorrow
#8
Heitor S P de Souza
PURPOSE OF REVIEW: Crohn's disease and ulcerative colitis, the two major forms of inflammatory bowel disease (IBD), represent chronic diseases of unknown cause, and they are regarded as prototypical complex diseases. Despite all the recent advances, a complete appreciation of the pathogenesis of IBD is still limited. In this review, we present recent information contributing to a better understanding of mechanisms underlying IBD. RECENT FINDINGS: Here, we attempt to highlight novel environmental triggers, data on the gut microbiota, its interaction with the host, and the potential influence of diet and food components...
April 11, 2017: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/28399013/caspase-recruitment-domain-9-microbiota-and-tryptophan-metabolism-dangerous-liaisons-in-inflammatory-bowel-diseases
#9
Bruno Lamas, Mathias L Richard, Harry Sokol
PURPOSE OF REVIEW: Inflammatory bowel diseases (IBDs) develop as a result of a combination of genetic predisposition, dysbiosis of the gut microbiota, and environmental influences. Here, we describe an example of how caspase recruitment domain 9 (CARD9), one of the numerous IBD susceptibility genes, participate to colitis susceptibility by shaping gut microbiota to produce tryptophan metabolites. RECENT FINDINGS: Recent study showed that CARD9 mice are more susceptible to colitis as a result of impaired interleukin 22 signaling pathway...
April 8, 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/28384049/intestinal-iga-as-a-modulator-of-the-gut-microbiota
#10
Shinsaku Okai, Fumihito Usui, Misa Ohta, Hiroshi Mori, Ken Kurokawa, Satoshi Matsumoto, Tamotsu Kato, Eiji Miyauchi, Hiroshi Ohno, Reiko Shinkura
Accumulating evidence suggests that dysbiosis plays a role in the pathogenesis of intestinal diseases including inflammatory bowel disease (IBD) as well as extra-intestinal disorders. As a modulator of the intestinal microbiota, we isolated a mouse monoclonal IgA antibody (clone W27) with high affinities for multiple commensal bacteria, but not for beneficial bacteria such as Lactobacillus casei (L. casei). Via specific recognition of an epitope in serine hydroxymethyltransferase (SHMT), a bacterial metabolic enzyme, W27 IgA selectively inhibited the in vitro growth of bound bacteria, including Escherichia coli (E...
April 6, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28378134/pediatric-short-bowel-syndrome-and-subsequent-development-of-inflammatory-bowel-disease-an-illustrative-case-and-literature-review
#11
Katherine J Baxter, Jahnavi K Srinivasan, Thomas R Ziegler, Tanvi Dhere, Richard R Ricketts, Megan M Durham
Short bowel syndrome (SBS) in neonates is an uncommon but highly morbid condition. As SBS survival increases, physiologic complications become more apparent. Few reports in the literature elucidate outcomes for adults with a pediatric history of SBS. We present a case report of a patient, born with complicated gastroschisis resulting in SBS at birth, who subsequently developed symptoms and pathologic changes of inflammatory bowel disease (IBD) as an adult. The patient lived from age 7, after a Bianchi intestinal lengthening procedure, to age 34 independent of parenteral nutrition (PN), but requiring hydration fluid via G-tube...
April 4, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28368910/iron-supplements-modulate-colon-microbiota-composition-and-potentiate-the-protective-effects-of-probiotics-in-dextran-sodium-sulfate-induced-colitis
#12
Marco Constante, Gabriela Fragoso, Joseph Lupien-Meilleur, Annie Calvé, Manuela M Santos
BACKGROUND: Iron is an important nutrient for both the host and colonizing bacteria. Oral iron supplementation may impact the composition of the microbiota and can be particularly damaging to patients suffering from inflammatory bowel disease (IBD). However, patients with IBD may require iron supplementation to treat their anemia. METHODS: We fed mice with diets supplemented with ferrous sulfate at different doses (5, 50, and 500 mg of iron/kg chow) and with different iron formulations (ferrous sulfate, ferrous bisglycinate and ferric ethylenediaminetetraacetic acid [FEDTA]), and analyzed the effects on the composition of the gut microbiota by 16S ribosomal RNA gene sequencing...
May 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28339520/efficacy-of-bacillus-subtilis-and-bacitracin-methylene-disalicylate-on-growth-performance-digestibility-blood-metabolites-immunity-and-intestinal-microbiota-after-intramuscular-inoculation-with-escherichia-coli-in-broilers
#13
M Manafi, S Khalaji, M Hedayati, N Pirany
This experiment was conducted to evaluate the effect of Bacillus subtilis (BS) on broiler performance and health after intramuscular inoculation with E. coli and compare its effect with a growth promoter antibiotic. In a completely randomized design manner, 360 male Ross 308 chicks were divided into 6 treatments and 5 replicates of 12 chicks in each replicate. Experimental treatments included control diet, control + E. coli (0.5 mL of culture containing 108 CFU of E. coli/ml), control + 0.1% BS, control + 0...
October 6, 2016: Poultry Science
https://www.readbyqxmd.com/read/28337900/the-fingerprint-of-the-human-gastrointestinal-tract-microbiota-a-hypothesis-of-molecular-mapping
#14
G Tomasello, M Mazzola, A Jurjus, F Cappello, F Carini, P Damiani, A Gerges Geagea, M N Zeenny, A Leone
The precise etiology of Inflammatory Bowel Disease (IDB) remains unclear and several factors are believed to play a role in its development and progression, including the composition of microbial communities resident in the gastrointestinal tract. Human intestinal microbiota are extensive with at least 15,000-36,000 bacterial species. However, thanks to the new development in sequencing and molecular taxonomic methodologies, our understanding of the microbiota population composition, dynamics, and ecology has greatly increased...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28330889/robust-microbiota-based-diagnostics-for-inflammatory-bowel-disease
#15
A Eck, E F J de Groot, T G J de Meij, M Welling, P H M Savelkoul, A E Budding
Strong evidence suggests that gut microbiota is altered in inflammatory bowel disease (IBD), indicating its potential role in non-invasive diagnostics. However, no clinical applications are currently used for routine patient care. The main obstacle to implementing a gut microbiota test for IBD is the lack of standardization, which leads to high inter-laboratory variations. We studied the between-hospital and between-platform batch effects and their effect on predictive accuracy for IBD.Fecal samples from 91 pediatric IBD patients and 58 healthy children were collected...
March 22, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28325746/dietary-emulsifiers-directly-alter-human-microbiota-composition-and-gene-expression-ex-vivo-potentiating-intestinal-inflammation
#16
Benoit Chassaing, Tom Van de Wiele, Jana De Bodt, Massimo Marzorati, Andrew T Gewirtz
OBJECTIVE: The intestinal microbiota plays a central role in the development of many chronic inflammatory diseases including IBD and metabolic syndrome. Administration of substances that alter microbiota composition, including the synthetic dietary emulsifiers polysorbate 80 (P80) and carboxymethylcellulose (CMC), can promote such inflammatory disorders. However, that inflammation itself impacts microbiota composition has obfuscated defining the extent to which these compounds or other substances act directly upon the microbiota versus acting on host parameters that promote inflammation, which subsequently reshapes the microbiota...
March 21, 2017: Gut
https://www.readbyqxmd.com/read/28321153/p-glycoprotein-multidrug-transporter-in-inflammatory-bowel-diseases-more-questions-than-answers
#17
EDITORIAL
Elke Cario
The gastrointestinal barrier is constantly exposed to numerous environmental substrates that are foreign and potentially harmful. These xenobiotics can cause shifts in the intestinal microbiota composition, affect mucosal immune responses, disturb tissue integrity and impair regeneration. The multidrug transporter ABCB1/MDR1 p-glycoprotein (p-gp) plays a key role at the front line of host defence by efficiently protecting the gastrointestinal barrier from xenobiotic accumulation. This Editorial discusses how altered expression and function of ABCB1/MDR1 p-gp may contribute to the development and persistence of chronic intestinal inflammation in inflammatory bowel diseases (IBD)...
March 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28320072/constitutive-androstane-receptor-regulates-the-intestinal-mucosal-response-to-injury
#18
Grace M Hudson, Kyle L Flannigan, Sarah L Erickson, Fernando A Vicentini, Alexandra Zamponi, Christina L Hirota, Laurie Alston, Christophe Altier, Subrata Ghosh, Kevin P Rioux, Sridhar Mani, Thomas K Chang, Simon A Hirota
BACKGROUND AND PURPOSE: The pathogenesis of the inflammatory bowel diseases (IBD), comprising Crohn's disease (CD) and ulcerative colitis (UC), involves aberrant interactions between a genetically susceptible individual, their microbiota and environmental factors. Alterations in xenobiotic receptor expression and function are associated with increased risk for IBD. Here, we have assessed the role of the constitutive androstane receptor (CAR), a xenobiotic receptor closely related to the pregnane X receptor, in the regulation of intestinal mucosal homeostasis...
March 20, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28315032/novel-indications-for-fecal-microbial-transplantation-update-and-review-of-the-literature
#19
REVIEW
Nathaniel Aviv Cohen, Nitsan Maharshak
BACKGROUND AND AIMS: Fecal microbial transplantation (FMT) is an established successful treatment modality for recurrent Clostridium difficile infection (CDI). The safety profile and potential therapeutic advantages of FMT for diseases associated with dysbiosis and immune dysfunction have led to many publications, mainly case series, and while many studies and reviews have been published on the use of FMT for inflammatory bowel disease (IBD), its potential use for other disease conditions has not been thoroughly reviewed...
May 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28293937/gut-microbiota-and-inflammatory-bowel-disease-an-update
#20
Grainne Holleran, Loris R Lopetuso, Gianluca Ianiro, Silvia Pecere, Marco Pizzoferrato, Valentina Petito, Cristina Graziani, Deirdre Mc Namara, Antonio Gasbarrini, Franco Scaldaferri
Major advances have occurred in the knowledge of the pathogenesis of Inflammatory Bowel Disease (IBD) over the last decade, and perhaps the most major, and clinically advantageous of these advances has been the discovery of the microbiome as a key multifaceted component of inflammation. The Gut microbiome is the largest known group of cells in the body, and is now recognised as an organ in its own right. Initial studies looking at a possible role of bacterial manipulation of the immune system in IBD, looked at identifying a specific bacterial species, and were not representative of a feasible model of inflammation in IBD overall...
March 14, 2017: Minerva Gastroenterologica e Dietologica
keyword
keyword
58409
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"