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inflammation bowel disease

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https://www.readbyqxmd.com/read/28928735/the-expression-of-the-short-isoform-of-thymic-stromal-lymphopoietin-in-the-colon-is-regulated-by-the-nuclear-receptor-peroxisome-proliferator-activated-receptor-gamma-and-is-impaired-during-ulcerative-colitis
#1
Anthony Martin Mena, Audrey Langlois, Silvia Speca, Lucil Schneider, Pierre Desreumaux, Laurent Dubuquoy, Benjamin Bertin
The etiology of inflammatory bowel diseases remains largely unknown. We previously demonstrated that the expression of the peroxisome proliferator activated receptor-gamma (PPARγ) is downregulated in colonic epithelial cells of patients with ulcerative colitis (UC). PPARγ is a nuclear receptor that modulates inflammation. We hypothesized that its deficiency may play a role in the loss of intestinal homeostasis through the control of immunomodulatory factors. We found that thymic stromal lymphopoietin (TSLP), an epithelial cytokine with pleiotropic functions, is regulated by PPARγ...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28926962/anti-nkg2d-mab-a-new-treatment-for-crohn-s-disease
#2
REVIEW
Kasper Vadstrup, Flemming Bendtsen
Crohn's disease (CD) and ulcerative colitis (UC) are immunologically-mediated, debilitating conditions resulting from destructive inflammation of the gastrointestinal tract. The pathogenesis of IBD is incompletely understood, but is considered to be the result of an abnormal immune response with a wide range of cell types and proteins involved. Natural Killer Group 2D (NKG2D) is an activating receptor constitutively expressed on human Natural Killer (NK), γδ T, mucosal-associated invariant T (MAIT), CD56⁺ T, and CD8⁺ T cells...
September 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28926118/chop-induced-loss-of-intestinal-epithelial-stemness-contributes-to-bile-duct-ligation-induced-cholestatic-liver-injury
#3
Runping Liu, Xiaojiaoyang Li, Zhiming Huang, Derrick Zhao, Bhagyalaxmi Sukka Ganesh, Guanhua Lai, William M Pandak, Phillip B Hylemon, Jasmohan S Bajaj, Arun J Sanyal, Huiping Zhou
Impaired intestinal barrier function promotes the progression of various liver diseases including cholestatic liver disease. The close association of primary sclerosing cholangitis (PSC) with inflammatory bowel disease highlights the importance of the gut-liver axis. It has been reported that bile duct ligation (BDL)-induced liver fibrosis is significantly reduced in C/EBP homologous protein knock out (CHOP(-/-) ) mice. However, the underlying mechanisms remain unclear. In the current study, we demonstrate that BDL induces striking and acute hepatic ER stress responses after 1 day, which return to normal after 3 days...
September 19, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28919861/lactobacillus-rhamnosus-gg-an-overview-to-explore-the-rationale-of-its-use-in-cancer
#4
REVIEW
Giuseppe L Banna, Francesco Torino, Francesco Marletta, Maria Santagati, Rossella Salemi, Elisa Cannarozzo, Luca Falzone, Francesco Ferraù, Massimo Libra
Cancer is the second leading cause of death in the western world. In the era of precision medicine, a significant number of cancer patients can be cured with several anti-cancer therapeutic regimens. However, therapy failure may be caused by treatment side effects, such as diarrhea, especially occurring in patients with gastrointestinal or pelvic malignancies. In particular, diarrhea is one of the most frequent gastrointestinal toxicity during cancer treatment and it can result from nearly bot chemo- and radio-therapeutic strategies currently used...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28916915/inflammatory-diseases-and-bone-fragility
#5
REVIEW
K Briot, P Geusens, I Em Bultink, W F Lems, C Roux
Systemic osteoporosis and increased fracture rates have been described in chronic inflammatory diseases such as rheumatoid arthritis, spondyloarthritis, systemic lupus erythematosus, inflammatory bowel diseases, and chronic obstructive pulmonary disease. Most of these patients receive glucocorticoids, which have their own deleterious effects on bone. However, the other main determinant of bone fragility is the inflammation itself, as shown by the interactions between the inflammatory mediators, the actors of the immune system, and the bone remodelling...
September 15, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28916545/serologic-evidence-of-gut-driven-systemic-inflammation-in-juvenile-idiopathic-arthritis
#6
Lampros Fotis, Nurmohammad Shaikh, Kevin W Baszis, Charles M Samson, Raffi Lev-Tzion, Anthony R French, Phillip I Tarr
OBJECTIVE: Accumulating evidence links juvenile idiopathic arthritis (JIA) to nonhost factors such as gut microbes. We hypothesize that children with new-onset JIA have increased intestinal bacterial translocation and circulating lipopolysaccharide (LPS). METHODS: We studied systemic treatment-naive patients with JIA [polyarticular JIA, n = 22, oligoarticular JIA, n = 31, and spondyloarthropathies (SpA), n = 16], patients with established inflammatory bowel disease-related arthritis (IBD-RA, n = 11), and 34 healthy controls...
September 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28915953/syntrophic-imbalance-and-the-etiology-of-bacterial-endoparasitism-diseases
#7
James F White
This article outlines the proposed 'syntrophic imbalance hypothesis' for etiology of bacterial endoparasitism diseases. This hypothesis involves microbes (archaea and bacteria) that exist in human body biofilms in syntrophic associations, where bacteria ferment nutrients to produce short chain fatty acids (SCFAs) that are used by methanogenic archaeons to produce methane. Overgrowth of archaea on human tissues (e.g., in association with intestines, teeth or lungs) results in excessive removal of SCFAs from the biofilms and this triggers bacteria in the free-living biofilm state to convert to the endoparasitic state and become intracellular in host cells where they incite inflammation and disease...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28915774/pyoderma-gangrenosum-a-current-problem-as-much-as-an-unknown-one
#8
Valerio Vallini, Roberto Andreini, Angelo Bonadio
Pyoderma gangrenosum (PG) is a rare neutrophilic inflammatory skin disease, characterized by recurrent skin ulcers, which in almost 50% of cases are associated with systemic autoimmune disorders, including rheumatoid arthritis, chronic hepatitis, inflammatory bowel disease, paraproteinemias and hematological malignancies. A systematic search of literature for PG was carried out using the PubMed, Embase, and Google Scholar databases for the purpose of this review and 2780 articles were retrieved up to February 2017...
September 2017: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/28914579/a-polymicrobial-view-of-disease-potential-in-crohn-s-associated-adherent-invasive-e-coli
#9
Wael Elhenawy, Alexander Oberc, Brian K Coombes
The human gut is home to trillions of bacteria and provides the scaffold for one of the most complex microbial ecosystems in nature. Inflammatory bowel diseases, such as Crohn's disease, involve a compositional shift in the microbial constituents of this ecosystem with a marked expansion of Enterobacteriaceae, particularly Escherichia coli. Adherent-invasive E. coli (AIEC) strains are frequently isolated from the biopsies of Crohn's patients, where their ability to elicit inflammation suggests a possible role in Crohn's pathology...
September 15, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28914262/transmembrane-tnf-%C3%AE-density-but-not-soluble-tnf-%C3%AE-level-is-associated-with-primary-response-to-infliximab-in-inflammatory-bowel-disease
#10
Azade Amini Kadijani, Hamid Asadzadeh Aghdaei, Dario Sorrentino, Alireza Mirzaei, Shabnam Shahrokh, Hedieh Balaii, Vu Q Nguyen, Jessica L Mays, Mohammad Reza Zali
OBJECTIVES: Anti-tumor necrosis factor (TNF)-α agents like Infliximab (IFX) are effective in the treatment of inflammatory bowel diseases (IBDs) and are widely used. However, a considerable number of patients do not respond or lose response to this therapy. Preliminary evidence suggests that transmembrane TNF-α (tmTNF-α) might be linked to response to IFX by promoting reverse signaling-induced apoptosis in inflammatory cells. The main aim of this study was the evaluation of this hypothesis in primary IFX non-responders...
September 14, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28912620/hormonal-contraception-and-the-development-of-autoimmunity-a-review-of-the-literature
#11
William V Williams
Estrogens and progestins are known to have profound effects on the immune system and may modulate the susceptibility to autoimmune diseases. A comprehensive literature search was carried out using PubMed for any of 153 autoimmune disease terms and the terms contraception, contraceptive, or their chemical components with limits of Humans + Title or Abstract. Over 1,800 titles were returned and scanned, 352 papers retrieved and reviewed in depth and an additional 70 papers retrieved from the bibliographies. Based on this review, substantial evidence exists linking the use of combined oral contraceptives to a lower incidence of hyperthyroidism, an increase in multiple sclerosis, ulcerative colitis, Crohn's disease, Systemic Lupus Erythematosus, and interstitial cystitis...
August 2017: Linacre Quarterly
https://www.readbyqxmd.com/read/28906290/safety-considerations-with-the-use-of-corticosteroids-and-biologic-therapies-in-mild-to-moderate-ulcerative-colitis
#12
Raymond K Cross
BACKGROUND: The risk of corticosteroid-associated adverse events can limit the use of systemic corticosteroids. Oral, topically acting, second-generation corticosteroids that deliver drug to the site of inflammation, and biologic therapies, are effective treatment alternatives. The aim of this review was to evaluate the safety and tolerability of topically acting corticosteroids and biologic therapies versus oral systemic corticosteroids for ulcerative colitis (UC). METHODS: The PubMed database was searched for clinical and observational trials, systematic reviews, and case reports/series published between January 1950 and September 30, 2016...
October 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28906289/update-on-the-therapeutic-efficacy-of-tregs-in-ibd-thumbs-up-or-thumbs-down
#13
Massimo C Fantini, Giovanni Monteleone
Crohn's disease and ulcerative colitis, the 2 major forms of inflammatory bowel disease (IBD) in humans, arise in genetically predisposed individuals because of an abnormal immune response direct against constituents of the gut flora. Defects in counter-regulatory mechanisms are supposed to amplify and maintain the IBD-associated mucosal inflammation. Therefore, restoring the balance between inflammatory and anti-inflammatory pathways in the gut could contribute to halt the IBD-associated tissue-damaging immune response...
October 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28902123/bidirectional-regulation-of-circadian-disturbance-and-inflammation-in-inflammatory-bowel-disease
#14
Xiaojing Liu, Ran Yu, Liangru Zhu, Xiaohua Hou, Kaifang Zou
BACKGROUND: Tight crosstalk between the circadian and immune systems has been reported in several inflammatory diseases. We hypothesized that circadian timekeeping was perturbed in inflammatory bowel disease (IBD), and that the bidirectional regulation of circadian disturbance and inflammation may be involved in the pathogenesis of IBD. METHODS: Patients with ulcerative colitis (51) and Crohn's disease (39) and 42 healthy controls were recruited and their circadian gene expression levels evaluated...
October 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28901966/mouse-models-of-inflammatory-bowel-disease-for-investigating-mucosal-immunity-in-the-intestine
#15
Giorgos Bamias, Kristen O Arseneau, Fabio Cominelli
PURPOSE OF REVIEW: Currently several mouse models are considered representative of inflammatory bowel disease (IBD). This review presents recent developments regarding the role of animal models of intestinal inflammation as research tools in IBD. RECENT FINDINGS: Preclinical studies in animal models of intestinal inflammation have generated novel findings in several areas of IBD research. The combination of chemical and genetically engineered models have revealed protective or harmful roles for various components of the innate immune system in response to acute injury and repair mechanisms for the intestinal mucosa...
September 8, 2017: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/28899907/a-novel-function-of-cxcl10-in-mediating-monocyte-production-of-proinflammatory-cytokines
#16
Qihong Zhao, Taeg Kim, Jian Pang, Wendy Sun, Xiaoxia Yang, Jinhong Wang, Yunling Song, Hongwei Zhang, Huadong Sun, Vangipuram Rangan, Shrikant Deshpande, Huaping Tang, Mary Ellen Cvijic, Richard Westhouse, Timothy Olah, Jenny Xie, Mary Struthers, Luisa Salter-Cid
IFN-γ-inducible protein 10 (CXCL10), a chemokine that is abundantly secreted in response to inflammatory stimuli, has been implicated in the pathogenesis of multiple inflammatory diseases, such as inflammatory bowel disease. Whereas CXCL10 is traditionally recognized for recruiting pathogenic T cells to inflamed sites, its nonchemotactic role during inflammation remains poorly defined. In this report, we identified a novel function of CXCL10 in the regulation of the inflammatory potential of human monocytes to produce cytokines...
September 12, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28898792/laparoscopic-management-for-spontaneous-jejunal-perforation-caused-by-nonspecific-ulcer-a-case-report
#17
Tatsuma Sakaguchi, Katsuji Tokuhara, Kazuyoshi Nakatani, Masanori Kon
INTRODUCTION: Nonspecific small bowel ulcers are rare and there have been limited reports. We applied laparoscopic surgery successfully for the perforation caused by this disease of jejunum. PRESENTATION OF CASE: A 70-year-old man visited to our hospital with complaint of abdominal pain and fever. He was diagnosed abdominal peritonitis with findings of intraperitoneal gas and fluid. Emergency laparoscopic surgery was performed. A perforation 5mm in diameter was recognized in jejunum opposite side of mesentery...
September 1, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28895120/inflammation-treatment-progress-and-limitations
#18
EDITORIAL
Ingolf Cascorbi
There is an increasing understanding on the etiology of chronic immune-mediated inflammatory diseases such as inflammatory bowel disease (IBD), psoriasis, or rheumatoid arthritis. Large consortia contributed to the elucidation of the genetics, for instance, of IBD identifying a number of genes involved in innate mucosal defense and immune tolerance (most prominent, e.g., NOD2) and other related processes. For a number of such diseases, common genetic susceptibility loci were identified, suggesting overlapping immune response pathways, although there is no causality of single genetic traits...
October 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28892033/ultrasound-guided-intracardiac-injection-of-human-mesenchymal-stem-cells-to-increase-homing-to-the-intestine-for-use-in-murine-models-of-experimental-inflammatory-bowel-diseases
#19
Maneesh Dave, Paola Menghini, Keiki Sugi, Rodrigo A Somoza, Zhenghong Lee, Mukesh Jain, Arnold Caplan, Fabio Cominelli
Crohn's disease (CD) is a common chronic inflammatory disease of the small and large intestines. Murine and human mesenchymal stem cells (MSCs) have immunosuppressive potential and have been shown to suppress inflammation in mouse models of intestinal inflammation, even though the route of administration can limit their homing and effectiveness (1)(,)(3)(,)(4)(,)(5). Local application of MSCs to colonic injury models has shown greater efficacy at ameliorating inflammation in the colon. However, there is paucity of data on techniques to enhance the localization of human bone marrow-derived MSCs (hMSCs) to the small intestine, the site of inflammation in the SAMP-1/YitFc (SAMP) model of experimental Crohn's disease...
September 1, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28885302/postinfection-irritable-bowel-syndrome-the-links-between-gastroenteritis-inflammation-the-microbiome-and-functional-disease
#20
Ian A Downs, Olga C Aroniadis, Libusha Kelly, Lawrence J Brandt
Postinfection irritable bowel syndrome (PI-IBS) is a diarrheal disease that develops after infectious gastroenteritis (IGE). Profound alterations in the microbiota accompany IGE yet only 10% of IGE patients progress to PI-IBS. This review explores research linking IGE severity, psychological comorbidity, PI-IBS, and the microbiome in various patient populations. Selective pressures caused by inflammation and increased gastrointestinal motility during gastroenteritis can alter intestinal bacterial phyla including Bacteroidetes, Firmicutes, and Proteobacteria...
September 6, 2017: Journal of Clinical Gastroenterology
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