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Crohn's and TNF

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https://www.readbyqxmd.com/read/27914457/tumor-necrosis-factor-and-lymphotoxin-in-regulation-of-intestinal-inflammation
#1
REVIEW
E O Gubernatorova, A V Tumanov
Ulcerative colitis and Crohn's disease are the major forms of inflammatory bowel disease. Cytokines of the tumor necrosis factor (TNF) family play an important role in the regulation of intestinal inflammation. In this review, we discuss the function of key cytokines of this family - TNF and lymphotoxin (LT) - in mucosal healing, IgA production, and in control of innate lymphoid cells (ILCs), novel regulators of mucosal homeostasis in the gut. TNF plays a central role in the pathogenesis of inflammatory bowel diseases (IBD)...
November 2016: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/27895418/molecular-mechanism-of-action-of-anti-tumor-necrosis-factor-antibodies-in-inflammatory-bowel-diseases
#2
REVIEW
Ulrike Billmeier, Walburga Dieterich, Markus F Neurath, Raja Atreya
Anti-tumor necrosis factor (TNF) antibodies are successfully used in the therapy of inflammatory bowel diseases (IBD). However, the molecular mechanism of action of these agents is still a matter of debate. Apart from neutralization of TNF, influence on the intestinal barrier function, induction of apoptosis in mucosal immune cells, formation of regulatory macrophages as well as other immune modulating properties have been discussed as central features. Nevertheless, clinically effective anti-TNF antibodies were shown to differ in their mode-of-action in vivo and in vitro...
November 14, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27895399/altered-pattern-of-tumor-necrosis-factor-alpha-production-in-peripheral-blood-monocytes-from-crohn-s-disease
#3
Claudia Loganes, Alessia Pin, Samuele Naviglio, Martina Girardelli, Anna Monica Bianco, Stefano Martelossi, Alberto Tommasini, Elisa Piscianz
AIM: To evaluate the inflammatory state in Crohn's disease (CD) patients and correlate it with genetic background and microbial spreading. METHODS: By means of flow cytometry, production of tumor necrosis factor-alpha (TNF-α) was measured in peripheral blood monocytes from patients suffering from CD, ulcerative colitis (UC) and in healthy subjects after stimulation of the NOD2 and TLR pathways. CD patients were genotyped for the three most common NOD2 variants (R702W, G908R and L1007Pfs*2) and basal production of TNF-α was correlated to NOD2 genotype...
November 7, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27888159/transmembrane-tnf-alpha-reverse-signaling-leading-to-tgf-beta-production-is-selectively-activated-by-tnf-targeting-molecules-therapeutic-implications
#4
REVIEW
Zsuzsa Szondy, Anna Pallai
Tumor necrosis factor (TNF)-α is a potent pro-inflammatory cytokine exerting pleiotropic effects on various cell types. It is synthesized in a precursor form called transmembrane TNF-α (mTNF-α) which, after being processed by metalloproteinases, is released in a soluble form to mediate its biological activities through Type 1 and 2 TNF receptors in TNF receptor expressing cells. In addition to acting in soluble form, TNF-α also acts in the transmembrane form both as a ligand by activating TNF receptors, as well as a receptor that transmits outside-to-inside (reverse) signals back into mTNF-α bearing cells...
November 22, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27887202/serological-markers-in-diagnosis-of-pediatric-inflammatory-bowel-disease-and-as-predictors-for-early-tumor-necrosis-factor-blocker-therapy
#5
Christine Olbjørn, Milada Cvancarova Småstuen, Espen Thiis-Evensen, Britt Nakstad, Morten Harald Vatn, Gøri Perminow
OBJECTIVE: To describe the prevalence of serological markers in newly diagnosed treatment-naïve pediatric inflammatory bowel disease (IBD), their utility in differentiating Crohn's disease (CD), ulcerative colitis (UC) and symptomatic non-IBD patients and whether serological markers are associated with early TNF blocker treatment. MATERIAL AND METHODS: Ninety-six children and adolescents <18 years, 58 with IBD and 38 symptomatic non-IBD controls were included...
November 25, 2016: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/27883259/the-association-between-intensified-medical-treatment-time-to-surgery-and-ileocolic-specimen-length-in-crohn-s-disease
#6
E Joline de Groof, Tjibbe J Gardenbroek, Christianne J Buskens, Pieter J Tanis, Cyriel Y Ponsioen, Geert R A M D'Haens, Willem A Bemelman
BACKGROUND: During the last decade, treatment protocols have changed for patients with ileocolic Crohn's disease. Anti-TNF has become part of standard medical treatment, usually in a step-up approach. The aim was to analyse if improved medical treatment has resulted in more limited ileocolic resections and a longer interval between diagnosis and surgery. METHODS: Patients undergoing ileocolic resection for Crohn's disease were included (1999-2014). Patient characteristics were compared to the results of a population based study (between 2004-2010) previously performed in the catchment area of the present tertiary referral centre...
November 24, 2016: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/27866429/cd99-refers-to-the-activity-of-inflammatory-bowel-disease
#7
Guangxi Zhou, Wenjing Yang, Lin Yu, Tianming Yu, Zhanju Liu
BACKGROUND: Inflammatory bowel disease (IBD), composed of Crohn's disease (CD) and ulcerative colitis (UC), is an inflammatory autoimmune disease. CD99 has been reported to participate in migration of leukocytes and T cell activation. However, the roles of CD99 in IBD are obscure. MATERIALS AND METHODS: CD99 expression was examined in peripheral blood mononuclear cells (PBMCs) and inflamed mucosa from IBD patients by qRT-PCR. Serum TNF-α and IL-17A levels were detected by ELISA...
November 21, 2016: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/27864028/anti-tnf-therapy-is-able-to-stabilize-bowel-damage-progression-in-patients-with-crohn-s-disease-a-study-performed-using-the-l%C3%A3-mann-index
#8
Giorgia Bodini, Edoardo G Giannini, Costanza De Maria, Pietro Dulbecco, Manuele Furnari, Elisa Marabotto, Vincenzo Savarino, Edoardo Savarino
AIMS: The Lémann Index (LI) was developed to assess the cumulative structural damage of the intestinal tract in patients with Crohn's Disease (CD) independently of clinical and biochemical activity. Recently, the goal of CD focused on obtaining mucosal healing and deep remission rather than simple symptom control. These new therapeutic aims emphasize the need to prevent progression of bowel damage. In this study we aimed to evaluate the influence of different treatments on structural damage progression, assessed by means of LI in a series of CD patients consistently treated with various drugs...
November 2, 2016: Digestive and Liver Disease
https://www.readbyqxmd.com/read/27862107/systematic-review-with-meta-analysis-comparative-efficacy-of-immunosuppressants-and-biologics-for-reducing-hospitalisation-and-surgery-in-crohn-s-disease-and-ulcerative-colitis
#9
REVIEW
E J Mao, G S Hazlewood, G G Kaplan, L Peyrin-Biroulet, A N Ananthakrishnan
INTRODUCTION: Crohn's disease (CD) and ulcerative colitis (UC) have a progressive course leading to hospitalisation and surgery. The ability of existing therapies to alter disease course is not clearly defined. AIM: To investigate the comparative efficacy of currently available inflammatory bowel disease (IBD) therapies to reduce hospitalisation and surgery. METHODS: We conducted a systematic review in MEDLINE/PubMed for randomised controlled trials (RCT) published between January 1980 and May 2016 examining efficacy of biological or immunomodulator therapy in IBD...
January 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27846191/noncoding-transcribed-ultraconserved-region-t-ucr-uc-261-participates-in-intestinal-mucosa-barrier-damage-in-crohn-s-disease
#10
Xiao Xian Qian, Jiang Chen Peng, An Tao Xu, Di Zhao, Yu Qi Qiao, Tian Rong Wang, Jun Shen, Zhi Hua Ran
BACKGROUND: To date, 481 ultraconserved regions (UCRs) have been discovered in human genome. We aimed to investigate the transcribed UCR (T-UCR) characteristics in Crohn's disease (CD ) and determine whether T-UCR uc.261 participated in intestinal mucosa barrier damage. METHODS: T-UCRs were screened in active CD mucosa using the Arraystar Human T-UCR Microarray and validated with quantitative real-time reverse transcription PCR, together with tight junction proteins (TJPs) including junctional adhesion molecule-A, occludin, claudin-1, and zonula occluden-1...
December 2016: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/27845027/clinical-effectiveness-and-cost-effectiveness-of-use-of-therapeutic-monitoring-of-tumour-necrosis-factor-alpha-tnf-%C3%AE-inhibitors-lisa-tracker%C3%A2-enzyme-linked-immunosorbent-assay-elisa-kits-tnf-%C3%AE-blocker-elisa-kits-and-promonitor%C3%A2-elisa-kits-versus-standard-care
#11
Karoline Freeman, Martin Connock, Peter Auguste, Sian Taylor-Phillips, Hema Mistry, Deepson Shyangdan, Rachel Court, Ramesh Arasaradnam, Paul Sutcliffe, Aileen Clarke
BACKGROUND AND OBJECTIVES: Systematic reviews and economic modelling of clinical effectiveness and cost-effectiveness of therapeutic monitoring of tumour necrosis factor alpha (TNF-α) inhibitors [using LISA-TRACKER(®) enzyme-linked immunosorbent assay (ELISA) kits (Theradiag, Marne La Vallee, France, or Alpha Laboratories, Heriot, UK), TNF-α-Blocker ELISA kits (Immundiagnostik AG, Bensheim, Germany) and Promonitor(®) ELISA kits (Proteomika, Progenika Biopharma, Bizkaia, Spain)] versus standard care for Crohn's disease (CD)...
November 2016: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/27824890/inflammatory-bowel-disease-how-effective-is-tnf-%C3%AE-suppression
#12
Wing-Cheong Lo, Violeta Arsenescu, Razvan I Arsenescu, Avner Friedman
Crohn's Disease (CD) results from inappropriate response toward commensal flora. Earlier studies described CD as a Th1 mediated disease. Current models view both phenotypes as a continuum of various permutations between Th1, Th2 and Th17 pathways compounded by a range of Treg disfunctions. In the present paper, we develop a mathematical model, by a system of differential equations, which describe the dynamic relations among these T cells and their cytokines. The model identities four groups of CD patients according to up/down regulation of Th1 and Th2...
2016: PloS One
https://www.readbyqxmd.com/read/27816496/advanced-endoscopy-imaging-in-inflammatory-bowel-diseases
#13
REVIEW
Ralf Kiesslich, Markus F Neurath
BACKGROUND AND AIMS: Rapid assessment of mucosal inflammation is of crucial importance for the initial diagnosis and the assessment of mucosal healing in inflammatory bowel diseases (IBD). Moreover, the identification of intraepithelial neoplasias in IBD is of key relevance for clinical management. Here, we systematically analyzed the utility of advanced endoscopic imaging techniques for optimized diagnosis in IBD. METHODS: PubMed/Medline, Web of Knowledge and Cochrane library were searched twice for diagnostic studies on advanced endoscopic imaging in IBD...
November 2, 2016: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27801751/extraintestinal-manifestations-of-pediatric-inflammatory-bowel-disease-prevalence-presentation-and-anti-tnf-treatment
#14
Thomas Greuter, Fabio Bertoldo, Roman Rechner, Alex Straumann, Luc Biedermann, Jonas Zeitz, Benjamin Misselwitz, Michael Scharl, Gerhard Rogler, Ekaterina Safroneeva, Raja A Ali, Christian Braegger, Klaas Heyland, Pascal Mueller, Andreas Nydegger, Laetitia-Marie Petit, Susanne Schibli, Raoul I Furlano, Johannes Spalinger, Michela Schäppi, Samuel Zamora, Florian Froehlich, Denise Herzog, Alain M Schoepfer, Stephan R Vavricka
BACKGROUND: There is a paucity of data on extraintestinal manifestations (EIM) and their treatment in pediatric patients with inflammatory bowel disease (IBD). METHODS: Since 2008, the Pediatric Swiss IBD Cohort Study has collected data on the pediatric IBD population in Switzerland. Data on 329 patients were analyzed retrospectively. RESULTS: 55 patients (16.7%) suffered from 1-4 EIM (39 Crohn's disease, 12 ulcerative colitis and 4 IBD-Unclassified (IBD-U) patients)...
October 31, 2016: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/27797921/ccl20-is-negatively-regulated-by-tgf-%C3%AE-1-in-intestinal-epithelial-cells-and-reduced-in-crohn-s-disease-patients-with-a-successful-response-to-mongersen-a-smad7-antisense-oligonucleotide
#15
Irene Marafini, Ivan Monteleone, Vincenzo Dinallo, Davide Di Fusco, Veronica De Simone, Federica Laudisi, Massimo Claudio Fantini, Antonio Di Sabatino, Francesco Pallone, Giovanni Monteleone
BACKGROUND AND AIM: The chemokine CCL20 is over-produced in epithelium of Crohn's disease [CD] patients and contributes to recruiting immune cells to inflamed gut. Tumour necrosis factor-α [TNF-α] is a powerful inducer of CCL20 in intestinal epithelial cells. In CD, high levels of Smad7 block the activity of transforming growth factor-β1 [TGF-β1], a negative regulator of TNF signalling. We investigated whether intestinal epithelial cell-derived CCL20 is negatively regulated by TGF-β1 and whether Smad7 knock-down reduces CCL20 in CD...
October 25, 2016: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/27785551/the-effect-of-pre-operative-optimization-on-post-operative-outcome-in-crohn-s-disease-resections
#16
Alaa El-Hussuna, Igors Iesalnieks, Nir Horesh, Sabah Hadi, Yael Dreznik, Oded Zmora
BACKGROUND: The timing of surgical intervention in Crohn's disease (CD) may depend on pre-operative optimization (PO) which includes different interventions to decrease the risk for unfavourable post-operative outcome. The objective of this study was to investigate the effect of multi-model PO on the post-operative outcome in CD. METHOD: This is a multicentre retrospective cohort study. The primary outcome was 30-day post-operative complications. Secondary outcomes were intra-abdominal septic complications, surgical site infection (SSI), re-operation, length of post-operative stay in a hospital and re-admission...
October 26, 2016: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/27781286/therapeutic-management-of-inflammatory-bowel-disease-in-real-life-practice-in-the-current-era-of-anti-tnf-agents-analysis-of-the-french-administrative-health-databases-2009-2014
#17
J Kirchgesner, M Lemaitre, A Rudnichi, A Racine, M Zureik, F Carbonnel, R Dray-Spira
BACKGROUND: Management of inflammatory bowel disease (IBD) has evolved in the last decade. AIM: To assess IBD therapeutic management, including treatment withdrawal and early treatment use in the current era of anti-TNF agents (anti-TNFs). METHODS: All patients affiliated to the French national health insurance diagnosed with IBD were included from 2009 to 2013 and followed up until 31 December 2014. Medication uses, treatment sequences after introduction of thiopurine or anti-TNF monotherapies or both (combination therapy), surgical procedures and hospitalisations were assessed...
January 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27779898/reflections-about-inflammatory-bowel-disease-and-vitamins-a-and-d
#18
Sandra Maria Barbalho, Marcelo Dib Bechara, Ricardo de Alvares Goulart, Karina Quesada, Rodrigo Galhardi Gasparini, Antonely de Cássio Alves de Carvalho, Adriana Maria Ragassi Fiorini
Ulcerative colitis and Crohn's disease are two major forms of the inflammatory bowel diseases (IBDs). Vitamin A (VA) and vitamin D (VD) may be associated with reduction in inflammation in these disorders. The aim of this review was to show the current evidence that may associate VA and VD with IBDs. Data linking VA, VD, and IBDs were studied. Both VA and VD may be related to the immune system in different manners. The active form of VA, retinoic acid, may be related to the growth factor-β and release of interleukin-10 (IL-10), thus involved with the resolution of the inflammation...
October 25, 2016: Journal of Medicinal Food
https://www.readbyqxmd.com/read/27766695/invasive-fungal-infections-in-pediatric-patients-treated-with-tumor-necrosis-alpha-tnf-%C3%AE-inhibitors
#19
Athanasios Tragiannidis, Ioannis Kyriakidis, Ilse Zündorf, Andreas H Groll
Macromolecular immunosuppressive monoclonal antibodies and fusion proteins directed against molecules or cells involved in inflammation and immunity represent a recent and important addition to our therapeutic armamentarium. Tumor necrosis alpha (TNFα) is a cytokine involved in systemic inflammation and clinical utilization of its antagonists has revolutionized treatment of juvenile rheumatoid and psoriatic arthritis, ankylosing spondylitis, Crohn's disease, ulcerative colitis, and plaque psoriasis. Clinical utility has also been demonstrated for use against steroid-refractory graft-vs-host disease and other immune-mediated conditions...
October 21, 2016: Mycoses
https://www.readbyqxmd.com/read/27758715/efficacy-safety-and-immunogenicity-of-biosimilars-in-inflammatory-bowel-diseases-a-systematic-review
#20
Laura Martelli, Laurent Peyrin-Biroulet
BACKGROUND: Anti-tumor necrosis factor (anti-TNF) monoclonal antibodies have revolutionized the treatment of inflammatory bowel diseases (IBD). However, because of their complexity, their production is expensive contributing to their high price. As the patent protection of these therapies has expired in several countries, biosimilars have been developed to reduce the healthcare costs. The aim of this article is to review the literature on the safety, efficacy and immunogenicity of biosimilars in IBD...
October 14, 2016: Current Medicinal Chemistry
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