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inflammatory intestinal disease

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https://www.readbyqxmd.com/read/29785965/inflammatory-bowel-disease-increases-the-risk-of-parkinson-s-disease-a-danish-nationwide-cohort-study-1977-2014
#1
Marie Villumsen, Susana Aznar, Bente Pakkenberg, Tine Jess, Tomasz Brudek
OBJECTIVE: Intestinal inflammation has been suggested to play a role in development of Parkinson's disease (PD) and multiple system atrophy (MSA). To test the hypothesis that IBD is associated with risk of PD and MSA, we performed a nationwide population-based cohort study. DESIGN: The cohort consisted of all individuals diagnosed with IBD in Denmark during 1977-2014 (n=76 477) and non-IBD individuals from the general population, who were comparable in terms of gender, age and vital status (n=7 548 259)...
May 21, 2018: Gut
https://www.readbyqxmd.com/read/29783653/avian-influenza-virus-subtype-h9n2-affects-intestinal-microbiota-barrier-structure-injury-and-inflammatory-intestinal-disease-in-the-chicken-ileum
#2
Hongxin Li, Xiaolin Liu, Feiyang Chen, Kejing Zuo, Che Wu, Yiming Yan, Weiguo Chen, Wencheng Lin, Qingmei Xie
Avian influenza virus subtype H9N2 (H9N2 AIV) has caused significant losses to the poultry industry due to the high mortality associated with secondary infections attributable to E. coli . This study tries to address the underlying secondary mechanisms after H9N2 AIV infection. Initially, nine day-old specific pathogen-free chickens were assigned to control (uninfected) and H9N2-infected groups, respectively. Using Illumina sequencing, histological examination, and quantitative real-time PCR, it was found that H9N2 AIV caused intestinal microbiota disorder, injury, and inflammatory damage to the intestinal mucosa...
May 18, 2018: Viruses
https://www.readbyqxmd.com/read/29783232/peculiarities-of-crohn-s-disease-in-children-the-way-from-diagnosis-verification-to-the-development-of-complications-clinical-case
#3
Tetyana O Kryuchko, Olha A Poda, Inna M Nesina, Vira P Harshman
OBJECTIVE: Introduction: Despite increasing frequency of inflammatory diseases of the intestine in the children worldwide, verification of Crohn's disease (CD) diagnosis in pediatric practice has not studied yet and it is difficult for clinician to determine the stage of the disease. The aim of our study was to analyze clinical case of Crohn's disease (CD) in a child based on literature data and own monitoring. PATIENTS AND METHODS: Materials and methods: 13 year old patient was involved in our examination who took complex lab and instrumental investigation, which allows verifying inflammatory intestinal pathology such as Crohn's disease...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29782025/injections-of-lipopolysaccharide-into-mice-to-mimic-entrance-of-microbial-derived-products-after-intestinal-barrier-breach
#4
Katarina Raduolovic, Rachel Mak'Anyengo, Berna Kaya, Anna Steinert, Jan Hendrik Niess
The intestinal epithelial barrier separates the host from the microbiota that is normally tolerated or ignored. The breach of this barrier results in the entrance of bacteria or bacteria-derived products into the host, accessing the host circulation and inner organs leading to the uncontrolled inflammation as observed in patients with inflammatory bowel disease (IBD), that are characterized by an increased intestinal epithelial permeability. To mimic the entrance of bacterial-derived compounds into the host, an endotoxemia model has been adopted in which lipopolysaccharide (LPS), a component of the outer cell wall of Gram-negative bacteria, were injected into mice...
May 2, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781175/translational-safety-biomarkers-of-colonic-barrier-integrity-in-the-rat
#5
Tim Erkens, Ruud Bueters, Marjolein van Heerden, Filip Cuyckens, Rob Vreeken, Nick Goeminne, Lieve Lammens
The intestinal barrier controls intestinal permeability, and its disruption has been associated with multiple diseases. Therefore, preclinical safety biomarkers monitoring barrier integrity are essential during the development of drugs targeting the intestines, particularly if starting treatment early after onset of disease. Classical toxicology endpoints are not sensitive enough and therefore our objective was to identify non-invasive markers enabling early in vivo detection of colonic barrier perturbation...
May 20, 2018: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/29780153/food-specific-iggs-are-highly-increased-in-the-sera-of-patients-with-inflammatory-bowel-disease-and-are-clinically-relevant-to-the-pathogenesis
#6
Nanping Xiao, Fenghua Liu, Guangxi Zhou, Mingming Sun, Fengfu Ai, Zhanju Liu
Objective Dietary antigens are common luminal antigens in the gastrointestinal tract and have been considered to contribute to the pathogenesis of inflammatory bowel disease (IBD). We analyzed the levels of food-specific IgGs against a variety of dietary antigens, explored the clinical relevance of food allergy to the pathogenesis of IBD, and investigated whether or not infliximab (IFX) treatment could regulate the immune responses induced by dietary antigens. Methods A total of 301 IBD patients, including 201 patients with Crohn's disease (CD) and 100 patients with ulcerative colitis (UC), were recruited, and their serum food-specific IgGs against 14 food antigens were detected by a semi-quantitative enzyme linked immunosorbent assay (ELISA)...
May 18, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29780063/the-effect-of-ozone-on-colonic-epithelial-cells
#7
Hidetomo Himuro
Due to its strong oxidation activity, ozone has been well known to kill bacteria and exert toxic effects on human tissues. At the same time, ozone is being used for the treatment of diseases such as inflammatory bowel disease in some European countries. However, the use of ozone for therapeutic purposes, despite its strong toxic effects, remains largely unexplored. Interestingly, we found that intrarectal administration of ozone gas induced transient colonic epithelial cell damage characterized by the impairment of cell survival pathways involved in DNA replication, cell cycle, and mismatch repair...
May 21, 2018: Kurume Medical Journal
https://www.readbyqxmd.com/read/29779158/diffusion-weighted-magnetic-resonance-enterography-for-prediction-of-response-to-tumor-necrosis-factor-inhibitors-in-stricturing-crohn-s-disease
#8
Marianne M Amitai, Eyal Klang, Asaf Levartovsky, Noa Rozendorn, Shelly Soffer, Gadeer Ali Taha, Bella Ungar, Tomer Greener, Shomron Ben-Horin, Rami Eliakim, Uri Kopylov
BACKGROUND AND AIMS: Distinguishing between fibrotic and inflammatory strictures in Crohn's disease (CD) is still challenging. The capacity of diffusion-weighted (DWI) magnetic resonance (MRE) to identify intestinal fibrosis was recently demonstrated; however, the therapeutic implications of this association have never been evaluated. The aim of the current study was to identify imaging features, including DWI, which can predict response to anti-inflammatory treatment in patients with stricturing CD...
May 19, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29778465/roles-for-selenium-and-selenoprotein-p-in-the-development-progression-and-prevention-of-intestinal-disease
#9
REVIEW
Sarah P Short, Jennifer M Pilat, Christopher S Williams
Selenium (Se) is a micronutrient essential to human health, the function of which is mediated in part by incorporation into a class of proteins known as selenoproteins (SePs). As many SePs serve antioxidant functions, Se has long been postulated to protect against inflammation and cancer development in the gut by attenuating oxidative stress. Indeed, numerous studies over the years have correlated Se levels with incidence and severity of intestinal diseases such as inflammatory bowel disease (IBD) and colorectal cancer (CRC)...
May 17, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29777855/polymer-lipid-hybrid-nanoparticles-as-enhanced-indomethacin-delivery-systems
#10
Annalisa Dalmoro, Sabrina Bochicchio, Shamil F Nasibullin, Paolo Bertoncin, Gaetano Lamberti, Anna Angela Barba, Rouslan I Moustafine
Non-steroidal anti-inflammatory drugs (NSAIDs), i.e. indomethacin used for rheumatoid arthritis and non-rheumatoid inflammatory diseases, are known for their injurious actions on the gastrointestinal (GI) tract. Mucosal damage can be avoided by using nanoscale systems composed by a combination of liposomes and biodegradable natural polymer, i.e. chitosan, for enhancing drug activity. Aim of this study was to prepare chitosan-lipid hybrid delivery systems for indomethacin dosage through a novel continuous method based on microfluidic principles...
May 16, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29777414/altered-gut-microbiota-associated-with-intestinal-disease-in-grass-carp-ctenopharyngodon-idellus
#11
Ngoc Tuan Tran, Jing Zhang, Fan Xiong, Gui-Tang Wang, Wen-Xiang Li, Shan-Gong Wu
Gut microbiota plays a crucial importance in their host. Disturbance of the microbial structure and function is known to be associated with inflammatory intestinal disorders. Enteritis is a significant cause of high mortality in fish species, including grass carp (Ctenopharyngodon idellus). Study regarding the association between microbial alternations and enteritis in grass carp is still absent. In this study, changes in the gut microbiota of grass carp suffering from enteritis were investigated using NGS-based 16S rRNA sequencing...
May 18, 2018: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29777136/functional-proteomic-profiling-of-secreted-serine-proteases-in-health-and-inflammatory-bowel-disease
#12
Alexandre Denadai-Souza, Chrystelle Bonnart, Núria Solà Tapias, Marlène Marcellin, Brendan Gilmore, Laurent Alric, Delphine Bonnet, Odile Burlet-Schiltz, Morley D Hollenberg, Nathalie Vergnolle, Céline Deraison
While proteases are essential in gastrointestinal physiology, accumulating evidence indicates that dysregulated proteolysis plays a pivotal role in the pathophysiology of inflammatory bowel disease (IBD). Nonetheless, the identity of overactive proteases released by human colonic mucosa remains largely unknown. Studies of protease abundance have primarily investigated expression profiles, not taking into account their enzymatic activity. Herein we have used serine protease-targeted activity-based probes (ABPs) coupled with mass spectral analysis to identify active forms of proteases secreted by the colonic mucosa of healthy controls and IBD patients...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777027/t-cell-proliferation-and-colitis-are-initiated-by-defined-intestinal-microbes
#13
Pailin Chiaranunt, Justin T Tometich, Junyi Ji, Timothy W Hand
Inflammatory bowel disease has been associated with the dysregulation of T cells specific to Ags derived from the intestinal microbiota. How microbiota-specific T cells are regulated is not completely clear but is believed to be mediated by a combination of IgA, regulatory T cells, and type 3 innate lymphoid cells. To test the role of these regulatory components on microbiota-specific T cells, we bred CBir1 TCR transgenic (CBir1Tg) mice (specific to flagellin from common intestinal bacteria) onto a lymphopenic Rag1-/- background...
May 18, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29775592/dietary-and-microbial-oxazoles-induce-intestinal-inflammation-by-modulating-aryl-hydrocarbon-receptor-responses
#14
Shankar S Iyer, Thomas Gensollen, Amit Gandhi, Sungwhan F Oh, Joana F Neves, Frederic Collin, Richard Lavin, Carme Serra, Jonathan Glickman, Punyanganie S A de Silva, R Balfour Sartor, Gurdyal Besra, Russell Hauser, Anthony Maxwell, Amadeu Llebaria, Richard S Blumberg
Genome-wide association studies have identified risk loci associated with the development of inflammatory bowel disease, while epidemiological studies have emphasized that pathogenesis likely involves host interactions with environmental elements whose source and structure need to be defined. Here, we identify a class of compounds derived from dietary, microbial, and industrial sources that are characterized by the presence of a five-membered oxazole ring and induce CD1d-dependent intestinal inflammation. We observe that minimal oxazole structures modulate natural killer T cell-dependent inflammation by regulating lipid antigen presentation by CD1d on intestinal epithelial cells (IECs)...
May 17, 2018: Cell
https://www.readbyqxmd.com/read/29775230/alcohol-enhances-symptoms-and-propensity-for-infection-in-inflammatory-bowel-disease-patients-and-a-murine-model-of-dss-induced-colitis
#15
Abigail R Cannon, Paulius V Kuprys, Adrienne N Cobb, Xianzhong Ding, Anai N Kothari, Paul C Kuo, Joshua M Eberhardt, Adam M Hammer, Niya L Morris, Xiaoling Li, Mashkoor A Choudhry
Over 1.4 million Americans have been diagnosed with inflammatory bowel disease (IBD), and ulcerative colitis (UC) makes up approximately half of those diagnoses. As a disease, UC cycles between periods of remission and flare, which is characterized by intense abdominal pain, increased weight loss, intestinal inflammation, rectal bleeding, and dehydration. Interestingly, a widespread recommendation to IBD patients for avoidance of a flare period is "Don't Drink Alcohol" as recent work correlated alcohol consumption with increased GI symptoms in patients with IBD...
May 18, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29774159/toll-like-receptors-2-and-4-modulate-intestinal-il-10-differently-in-ileum-and-colon
#16
Eva Latorre, Elena Layunta, Laura Grasa, Julián Pardo, Santiago García, Ana I Alcalde, José E Mesonero
Background: Inflammatory bowel diseases are consequence of an intestinal homeostasis breakdown in which innate immune dysregulation is implicated. Toll-like receptor (TLR)2 and TLR4 are immune recognition receptors expressed in the intestinal epithelium, the first physical-physiological barrier for microorganisms, to inform the host of the presence of Gram-positive and Gram-negative organisms. Interleukin (IL)-10 is an essential anti-inflammatory cytokine that contributes to maintenance of intestinal homeostasis...
April 2018: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29774026/critical-role-of-alternative-m2-skewing-in-mir-155-deletion-mediated-protection-of-colitis
#17
Jintao Li, Ji Zhang, Hongxia Guo, Shimin Yang, Weiping Fan, Nan Ye, Zhiqiang Tian, Tiantian Yu, Guoping Ai, Zigang Shen, Haiyang He, Ping Yan, Hui Lin, Xue Luo, Hongli Li, Yuzhang Wu
Inflammatory bowel disease (IBD) is associated with dysregulation of both innate and adaptive immune response in the intestine. MicroRNA (miR)-155 is frequently expressed and functions in many immune cell types. Besides its function in adaptive immunity, miR-155 is a key regulator of the innate immune response in macrophages, dendritic cells, and even in epithelia cells. Although the roles of miR-155 within T and B lymphocytes in colitis have been reported, its function in innate immune cells has not been thoroughly examined...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29773890/intraperitoneal-administration-of-the-anti-il-23-antibody-prevents-the-establishment-of-intestinal-nematodes-in-mice
#18
M Gomez-Samblas, D Bernal, A Bolado-Ortiz, S Vilchez, F Bolás-Fernández, A M Espino, M Trelis, A Osuna
Previous studies have established that an increased Th-9 response creates a hostile environment for nematode parasites. Given that IL-23, a cytokine required for maintenance of the IL-17-secreting phenotype, has inhibitory effects on IL-9 production, we hypothesized that reducing circulating IL-23 by treatment with anti-IL-23 antibodies would reduce the establishment and development of parasitic intestinal nematodes. In this study, we show that animals treated with anti-IL-23 monoclonal antibodies showed a drastic reduction in the number of mouse pinworms (Aspiculuris tetraptera) recovered from the intestine (p < 0...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773794/calreticulin-and-integrin-alpha-dissociation-induces-anti-inflammatory-programming-in-animal-models-of-inflammatory-bowel-disease
#19
Masayoshi Ohkuro, Jun-Dal Kim, Yoshikazu Kuboi, Yuki Hayashi, Hayase Mizukami, Hiroko Kobayashi-Kuramochi, Kenzo Muramoto, Manabu Shirato, Fumiko Michikawa-Tanaka, Jun Moriya, Teruya Kozaki, Kazuma Takase, Kenichi Chiba, Kishan Lal Agarwala, Takayuki Kimura, Makoto Kotake, Tetsuya Kawahara, Naoki Yoneda, Shinsuke Hirota, Hiroshi Azuma, Nobuko Ozasa-Komura, Yoshiaki Ohashi, Masafumi Muratani, Keiji Kimura, Ieharu Hishinuma, Akiyoshi Fukamizu
Inflammatory bowel disease (IBD), including ulcerative colitis and Crohn's disease, is a chronic intestinal inflammatory condition initiated by integrins-mediated leukocyte adhesion to the activated colonic microvascular endothelium. Calreticulin (CRT), a calcium-binding chaperone, is known as a partner in the activation of integrin α subunits (ITGAs). The relationship between their interaction and the pathogenesis of IBD is largely unknown. Here we show that a small molecule, orally active ER-464195-01, inhibits the CRT binding to ITGAs, which suppresses the adhesiveness of both T cells and neutrophils...
May 17, 2018: Nature Communications
https://www.readbyqxmd.com/read/29773105/-protective-role-of-green-tea-polyphenols-in-intestinal-mucosal-barrier-function-of-mice-with-colitis-induced-by-tnbs-through-inhibiting-jak2-stat3-pathway
#20
Jin Xi, Sitang Ge, Lugen Zuo, Yuke Zhu, Lian Wang, Qiaoli Xie
Objective To analyze the therapeutic effect of green tea polyphenols (GTP) in mice with colitis induced by TNBS and its possible mechanism. Methods Colitis was induced by TNBS in BALB/C mice. The mice were randomly divided into GTP group (n=10) and TNBS model group (n=10). Mice in the GTP group were given GTP [0.2 mL at a dose level of 100 mg/(kg.d)] by oral gavage, and mice in the model group were given normal saline [0.2 ml/d] by gavage. Four weeks later, the mice were sacrificed. Disease activity index (DAI) and inflammatory score were evaluated by HE staining...
March 2018: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
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