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inflammatory intestinal disease

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https://www.readbyqxmd.com/read/28329021/comparison-of-anti-inflammatory-activities-of-an-anthocyanin-rich-fraction-from-portuguese-blueberries-vaccinium-corymbosum-l-and-5-aminosalicylic-acid-in-a-tnbs-induced-colitis-rat-model
#1
Sónia R Pereira, Rita Pereira, Isabel Figueiredo, Victor Freitas, Teresa C P Dinis, Leonor M Almeida
Despite the actual therapeutic approaches for inflammatory bowel disease (IBD), efficient and secure alternative options remain a research focus. In this context, anthocyanins seem promising natural anti-inflammatory agents, but their action mechanisms and efficacy as compared with established drugs still require more clarification. The main aim of this study was to compare the anti-inflammatory action of a chemically characterized anthocyanin-rich fraction (ARF), obtained from Portuguese blueberries (Vaccinium corymbosum L...
2017: PloS One
https://www.readbyqxmd.com/read/28328621/ocular-involvement-in-children-with-inflammatory-bowel-disease
#2
Samuele Naviglio, Fulvio Parentin, Silvia Nider, Nicolò Rassu, Stefano Martelossi, Alessandro Ventura
BACKGROUND: Data on ocular manifestations of inflammatory bowel disease (IBD) in children are limited. Some authors have reported a high prevalence of asymptomatic uveitis, yet the significance of these observations is unknown and there are no recommendations on which ophthalmologic follow-up should be offered. METHODS: Children with IBD seen at a single referral center for pediatric gastroenterology were offered ophthalmologic evaluation as part of routine care for their disease...
March 21, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28327619/il-36%C3%AE-signaling-controls-the-induced-regulatory-t-cell-th9-cell-balance-via-nf%C3%AE%C2%BAb-activation-and-stat-transcription-factors
#3
A Harusato, H Abo, V L Ngo, S W Yi, K Mitsutake, S Osuka, J E Kohlmeier, J D Li, A T Gewirtz, A Nusrat, T L Denning
Regulatory and effector T helper (Th) cells are abundant at mucosal surfaces, especially in the intestine, where they control the critical balance between tolerance and inflammation. However, the key factors that reciprocally dictate differentiation along these specific lineages remain incompletely understood. Here we report that the interleukin-1 (IL-1) family member IL-36γ signals through IL-36 receptor, myeloid differentiation primary response gene 88, and nuclear factor-κBp50 in CD4(+) T cells to potently inhibit Foxp3-expressing induced regulatory T cell (Treg) development, while concomitantly promoting the differentiation of Th9 cells via a IL-2-STAT5- (signal transducer and activator of transcription factor 5) and IL-4-STAT6-dependent pathway...
March 22, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28325746/dietary-emulsifiers-directly-alter-human-microbiota-composition-and-gene-expression-ex-vivo-potentiating-intestinal-inflammation
#4
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/28324642/cinnamon-reduces-inflammatory-response-in-intestinal-fibroblasts-in-vitro-and-in-colitis-in-vivo-leading-to-decreased-fibrosis
#5
Yvonne Hagenlocher, Sabrina Satzinger, Mehtap Civelek, Katharina Feilhauer, Jörg Köninger, Stephan C Bischoff, Axel Lorentz
Intestinal fibrosis, a complication of inflammatory bowel disease, is currently being addressed by surgery alone, with no adequate alternative therapy available for patients. We propose that anti-inflammatory plant substances like cinnamon extract (CE) or its main compound cinnamaldeyde (CA) could aid in therapy. We recently found CE reducing inflammation in murine colitis. Here, we analysed effects of CE on fibrosis in IL-10(-/-) colitis METHODS AND RESULTS: IL-10(-/-) and wild type (wt) mice were orally treated with/without vehicle or CE...
March 21, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28324102/duodenal-mucosa-of-patients-with-type-1-diabetes-shows-distinctive-inflammatory-profile-and-microbiota
#6
Silvia Pellegrini, Valeria Sordi, Andrea Mario Bolla, Diego Saita, Roberto Ferrarese, Filippo Canducci, Massimo Clementi, Francesca Invernizzi, Alberto Mariani, Riccardo Bonfanti, Graziano Barera, Pier Alberto Testoni, Claudio Doglioni, Emanuele Bosi, Lorenzo Piemonti
Context: Increasing evidences suggest a correlation between gut and type 1 diabetes (T1D). Objective: The objective of this study is to evaluate the gut inflammatory profile and microbiota in patients with T1D, compared to healthy controls (CTRL) and patients with celiac disease (CD) as gut inflammatory disease controls. Design/Setting/Participants: The inflammatory status and microbiome composition were evaluated in biopsies of the duodenal mucosa of patients with T1D (n=19), CD (n=19) and CTRL (n=16), recruited at San Raffaele Scientific Institute, in Milan, Italy, between 2009 and 2015...
January 19, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323866/elevated-fecal-peptidase-d-at-onset-of-colitis-in-galphai2-mice-a-mouse-model-of-ibd
#7
Daniel Bergemalm, Robert Kruse, Maria Sapnara, Jonas Halfvarson, Elisabeth Hultgren Hörnquist
BACKGROUND: The identification of novel fecal biomarkers in inflammatory bowel disease (IBD) is hampered by the complexity of the human fecal proteome. On the other hand, in experimental mouse models there is probably less variation. We investigated the fecal protein content in mice to identify possible biomarkers and pathogenic mechanisms. METHODS: Fecal samples were collected at onset of inflammation in Galphai2-/- mice, a well-described spontaneous model of chronic colitis, and from healthy littermates...
2017: PloS One
https://www.readbyqxmd.com/read/28323128/fecal-microbiota-transplantation-fmt-could-reverse-the-severity-of-experimental-necrotizing-enterocolitis-nec-via-oxidative-stress-modulation
#8
Xiaomei Li, Xiaowen Li, Qingjuan Shang, Zongwei Gao, Fabao Hao, Hongjie Guo, Chunbao Guo
Fecal microbiota transplantation (FMT) has been used successfully to treat a variety of gastroenterological diseases. The alterations of microbiota in mouse models of necrotizing enterocolitis (NEC) as well as in patients suggested the possibility of treating NEC with FMT. Here we show that FMT caused an improvement in the histopathology and symptoms of NEC in WT mice, but not Grx1-/- mice. FMT eliminated O2(•)- production and promoted NO production in experimental NEC mice though the modulation of S-glutathionylation of eNOS (eNOS-SSG)...
March 16, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28322932/disruption-of-the-epithelial-barrier-during-intestinal-inflammation-quest-for-new-molecules-and-mechanisms
#9
REVIEW
Susana Lechuga, Andrei I Ivanov
The intestinal epithelium forms a key protective barrier that separates internal organs from the harmful environment of the gut lumen. Increased permeability of the gut barrier is a common manifestation of different inflammatory disorders contributing to the severity of disease. Barrier permeability is controlled by epithelial adherens junctions and tight junctions. Junctional assembly and integrity depend on fundamental homeostatic processes such as cell differentiation, rearrangements of the cytoskeleton, and vesicle trafficking...
March 16, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28321459/-the-microbiome-and-autoimmunity
#10
T Schröder, S Ibrahim
An abundant and diverse set of commensal microbial communities covers the body's surfaces, collectively so-called microbiome. It has a functional impact on various immune processes and modulates many health-related processes, including autoimmunity. An active site of microorganism-host interplay is the intestinal mucosa. Growing evidence has helped us to learn how a specific microbiota composition and its functionality determine the intestinal barrier function and, furthermore, modulate pro-inflammatory and anti-inflammatory immune mechanisms in remote organs...
March 20, 2017: Der Internist
https://www.readbyqxmd.com/read/28321153/p-glycoprotein-multidrug-transporter-in-inflammatory-bowel-diseases-more-questions-than-answers
#11
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
#12
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), composed of 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. In the current study, we 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/28319200/induction-of-immunomodulatory-mir-146a-and-mir-155-in-small-intestinal-epithelium-of-vibrio-cholerae-infected-patients-at-acute-stage-of-cholera
#13
Aziz Bitar, Rituparna De, Silvia Melgar, Kyaw Min Aung, Arman Rahman, Firdausi Qadri, Sun Nyunt Wai, Tahmina Shirin, Marie-Louise Hammarström
The potential immunomodulatory role of microRNAs in small intestine of patients with acute watery diarrhea caused by Vibrio cholerae O1 or enterotoxigenic Escherichia coli (ETEC) infection was investigated. Duodenal biopsies were obtained from study-participants at the acute (day 2) and convalescent (day 21) stages of disease, and from healthy individuals. Levels of miR-146a, miR-155 and miR-375 and target gene (IRAK1, TRAF6, CARD10) and 11 cytokine mRNAs were determined by qRT-PCR. The cellular source of microRNAs in biopsies was analyzed by in situ hybridization...
2017: PloS One
https://www.readbyqxmd.com/read/28316996/overview-of-celiac-disease-in-russia-regional-data-and-estimated-prevalence
#14
REVIEW
Lyudmila V Savvateeva, Svetlana I Erdes, Anton S Antishin, Andrey A Zamyatnin
Celiac disease (CD) is an autoimmune enteropathy triggered by the ingestion of dietary gluten from some cereals mainly in individuals carrying the HLA-DQ2 and/or HLA-DQ8 haplotypes. As an autoimmune disease, CD is manifested in the small intestine in the form of a progressive and reversible inflammatory lesion due to immune response to self-antigens. Indeed, CD is one of the most challenging medicosocial problems in current gastroenterology. At present, the global CD prevalence is estimated at approximately 1% based on data sent from different locations and available CD screening strategies used...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28316967/the-role-of-mucosal-immunity-in-the-pathogenesis-of-necrotizing-enterocolitis
#15
REVIEW
Zerina Hodzic, Alexa M Bolock, Misty Good
Necrotizing enterocolitis (NEC) is the most devastating gastrointestinal disease of prematurity. Although the precise cause is not well understood, the main risk factors thought to contribute to NEC include prematurity, formula feeding, and bacterial colonization. Recent evidence suggests that NEC develops as a consequence of intestinal hyper-responsiveness to microbial ligands upon bacterial colonization in the preterm infant, initiating a cascade of aberrant signaling events, and a robust pro-inflammatory mucosal immune response...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28316860/hmgb1-and-histones-play-a-significant-role-in-inducing-systemic-inflammation-and-multiple-organ-dysfunctions-in-severe-acute-pancreatitis
#16
REVIEW
Runkuan Yang, Jyrki Tenhunen, Tor Inge Tonnessen
Severe acute pancreatitis (SAP) starts as a local inflammation of pancreatic tissue that induces the development of multiple extrapancreatic organs dysfunction; however, the underlying mechanisms are still not clear. Ischemia-reperfusion, circulating inflammatory cytokines, and possible bile cytokines significantly contribute to gut mucosal injury and intestinal bacterial translocation (BT) during SAP. Circulating HMGB1 level is significantly increased in SAP patients and HMGB1 is an important factor that mediates (at least partly) gut BT during SAP...
2017: International Journal of Inflammation
https://www.readbyqxmd.com/read/28316379/high-fat-diet-alters-gut-microbiota-and-the-expression-of-paneth-cell-antimicrobial-peptides-preceding-changes-of-circulating-inflammatory-cytokines
#17
Xiulan Guo, Jinchao Li, Renyong Tang, Guodong Zhang, Huawei Zeng, Richard J Wood, Zhenhua Liu
Obesity is an established risk factor for many diseases including intestinal cancer. One of the responsible mechanisms is the chronic inflammation driven by obesity. However, it remains to be defined whether diet-induced obesity exacerbates the intestinal inflammatory status by cytokines produced in adipose tissue or the high fat diet first alters the gut microbiota and then drives intestinal inflammation. To address this question, we fed C57BL/6 mice with a high fat diet (HF, 60%) and sacrificed them sequentially after 8, 12, and 16 weeks, and then compositions of gut microbiota and expressions of antimicrobial peptides were determined...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28316376/the-role-of-intestinal-alkaline-phosphatase-in-inflammatory-disorders-of-gastrointestinal-tract
#18
REVIEW
Jan Bilski, Agnieszka Mazur-Bialy, Dagmara Wojcik, Janina Zahradnik-Bilska, Bartosz Brzozowski, Marcin Magierowski, Tomasz Mach, Katarzyna Magierowska, Tomasz Brzozowski
Over the past few years, the role of intestinal alkaline phosphatase (IAP) as a crucial mucosal defence factor essential for maintaining gut homeostasis has been established. IAP is an important apical brush border enzyme expressed throughout the gastrointestinal tract and secreted both into the intestinal lumen and into the bloodstream. IAP exerts its effects through dephosphorylation of proinflammatory molecules including lipopolysaccharide (LPS), flagellin, and adenosine triphosphate (ATP) released from cells during stressful events...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28316036/targeting-the-microbiome-in-heart-failure
#19
REVIEW
Allyson Zabell, W H Wilson Tang
Heart failure is the leading cause of mortality and morbidity in the world today. While there have been major advances in our understanding of the pathophysiology of heart failure over the past decades, disease progression remains inevitable in the majority of patients and effective therapies to prevent heart failure are still lacking. Research has turned to better understand the gut microbiome because alterations in their ecosystems have been associated with various downstream chronic conditions including cardiovascular diseases...
April 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28302598/helminths-in-the-gastrointestinal-tract-as-modulators-of-immunity-and-pathology
#20
Fumi Varyani, John O Fleming, Rick M Maizels
Helminth parasites are highly prevalent in many low- and middle-income countries, in which inflammatory bowel disease and other immunopathologies are less frequent than in the developed world. Many of the most common helminths establish in the gastrointestinal tract, and can exert counter-inflammatory influences on the host immune system. For these reasons, interest has arisen in how parasites may ameliorate intestinal inflammation and whether these organisms, or products they release, could offer future therapies for immune disorders...
March 16, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
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