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Microscopic colitis

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https://www.readbyqxmd.com/read/28634361/uridine-ameliorates-dextran-sulfate-sodium-dss-induced-colitis-in-mice
#1
Manish Kumar Jeengar, Dinesh Thummuri, Mattias Magnusson, V G M Naidu, Srinivas Uppugunduri
Uridine, one of the four components that comprise RNA, has attracted attention as a novel therapeutic modulator of inflammation. However, very little is known about its effect on intestinal inflammation. The aim of the present study was to investigate the potential protective effect of intracolonic administered uridine against DSS induced colitis in male C57BL/6 mice. Intracolonic instillation of 3 doses of uridine 1 mg/Kg (lower dose), 5 mg/Kg (medium dose), and 10 mg/Kg (higher dose) in saline was performed daily...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28622393/giardia-co-infection-promotes-the-secretion-of-antimicrobial-peptides-beta-defensin-2-and-trefoil-factor-3-and-attenuates-attaching-and-effacing-bacteria-induced-intestinal-disease
#2
Anna Manko, Jean-Paul Motta, James A Cotton, Troy Feener, Ayodele Oyeyemi, Bruce A Vallance, John L Wallace, Andre G Buret
Our understanding of polymicrobial gastrointestinal infections and their effects on host biology remains incompletely understood. Giardia duodenalis is an ubiquitous intestinal protozoan parasite infecting animals and humans. Concomitant infections with Giardia and other gastrointestinal pathogens commonly occur. In countries with poor sanitation, Giardia infection has been associated with decreased incidence of diarrheal disease and fever, and reduced serum inflammatory markers release, via mechanisms that remain obscure...
2017: PloS One
https://www.readbyqxmd.com/read/28609199/smoking-in-irritable-bowel-syndrome-a-systematic-review
#3
Laura Sirri, Silvana Grandi, Eliana Tossani
OBJECTIVE: The aim of this review was to examine (1) the prevalence of smoking in subjects with irritable bowel syndrome (IBS), (2) whether smoking prevalence significantly differs between subjects with and without IBS, and (3) whether smoking significantly predicts the presence or the development of IBS. METHODS: Articles were retrieved by systematically searching the Scopus, Web of Science, and PubMed electronic databases from inception to July 2016, using the keywords "smoking" and "tobacco" combined with "irritable bowel syndrome...
June 13, 2017: Journal of Dual Diagnosis
https://www.readbyqxmd.com/read/28606549/molecular-weight-and-helix-conformation-determine-intestinal-anti-inflammatory-effects-of-exopolysaccharide-from-schizophyllum-commune
#4
Bin Du, Yuedong Yang, Zhaoxiang Bian, Baojun Xu
Intestinal anti-inflammatory activities of exopolysaccharide from S. commune were assessed using dextran sulfate sodium (DSS)-induced colitis in mice model. The changes of molecular weight (MW), atomic force microscope morphology, X-ray diffraction, particle size distribution, and viscosity were recorded after sonication treatment. The results indicated that the triple helical structure of exopolysaccharide was dissociated into single helical structure and random coiled structure by ultrasonication via breaking of inter- and intramolecular hydrogen bonds...
September 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28604509/granulocyte-and-monocyte-apheresis-for-induction-of-remission-in-children-with-new-onset-inflammatory-bowel-colitis
#5
Helena Rolandsdotter, Michael Eberhardson, Ulrika L Fagerberg, Yigael Finkel
OBJECTIVE: To study the effect of granulocyte and monocyte apheresis (GMA) with mesalazine for induction of remission in pediatric patients with newly onset chronic inflammatory bowel disease (IBD) colitis. METHODS: Thirteen pediatric patients with newly onset extensive IBD colitis were investigated per the ECCO/ESPGHAN IBD protocol. Of these 13, 12 received ten treatments with Adacolumn (ADA) during a median of 6.25 weeks in combination with low-to-moderate doses of mesalazine, which was continued after apheresis...
June 9, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28597107/microscopic-colitis-evolved-into-inflammatory-bowel-diseases-is-characterized-by-increased-th1-tc1-cells-in-colonic-mucosal-lamina-propria
#6
Ji Li, Yuchu Yan, Ziran Meng, Shuhong Liu, Paul L Beck, Subrata Ghosh, Jiaming Qian, Xianyong Gui
BACKGROUND: An association between microscopic colitis (MC), i.e., lymphocytic colitis (LC) and collagenous colitis (CC), and inflammatory bowel diseases (IBD) has been noticed. A subset of MC cases may evolve into IBD, and IBD in remission may present as MC in a histologic pattern. Moreover, MC and IBD may coexist in different regions of the bowel. A link between MC and IBD in their pathogenesis is, therefore, suggested. Abnormal mucosal immunity is likely the key. METHODS: We reviewed 2324 MC cases in Calgary over 14 years and identified 20 cases evolved into IBD (IBD transformers)...
June 9, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28590341/fecal-calprotectin-levels-predict-histological-healing-in-ulcerative-colitis
#7
Anish Patel, Hinaben Panchal, Marla C Dubinsky
BACKGROUND: Mucosal healing as measured by endoscopic activity is the therapeutic target for ulcerative colitis (UC) and associated with improved outcomes. We investigated the clinical utility of fecal calprotectin (FC) levels to predict depth of remission, including histological remission in patients with UC. METHODS: We performed a retrospective chart review of patients with UC who underwent a full colonoscopy and FC measured within 6 weeks before colonoscopy at a tertiary inflammatory bowel disease center...
June 5, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28562114/macroscopic-findings-incidence-and-characteristics-of-microscopic-colitis-in-a-large-cohort-of-patients-from-the-united-kingdom
#8
John S Kane, Olorunda Rotimi, Alexander C Ford
OBJECTIVE: Microscopic colitis (MC) is classically associated with normal or near-normal endoscopic appearances. However, non-specific macroscopic findings have been described, the importance of biopsy location for confirming a diagnosis of MC is unclear, and reported incidence data from the United Kingdom are limited. This study was designed to assess macroscopic features, incidence, demographics, and location and positivity of biopsy samples in MC. MATERIALS AND METHODS: Retrospective, cross-sectional study of individuals with newly diagnosed MC...
May 31, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28556814/combined-treatment-with-hyaluronic-acid-and-mesalamine-protects-rats-from-inflammatory-bowel-disease-induced-by-intracolonic-administration-of-trinitrobenzenesulfonic-acid
#9
Chih-Tung Chiu, Sheng-Nan Kuo, Shao-Wen Hung, Cheng-Yao Yang
Drugs such as mesalamine (5-ASA) are currently recommended for the treatment of inflammatory bowel disease (IBD). To reduce the frequency of their administration and improve their therapeutic effect, this study investigated the adhesion efficacy, wound healing promotion, and decrease in inflammation in ulcers in the colonic tissue of rats with colitis after combined treatment with hyaluronic acid (HA) and 5-ASA (IBD98-M). HA-fluoresceinamine (FL) conjugates successfully adhered to the mucosal layer and were conjugated in the vascular tissue...
May 30, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28542712/histologic-scoring-indices-for-evaluation-of-disease-activity-in-ulcerative-colitis
#10
REVIEW
Mahmoud H Mosli, Claire E Parker, Sigrid A Nelson, Kenneth A Baker, John K MacDonald, G Y Zou, Brian G Feagan, Reena Khanna, Barrett G Levesque, Vipul Jairath
BACKGROUND: Disease activity can be determined using clinical, endoscopic or histologic criteria in patients with ulcerative colitis (UC). Persistent disease activity is associated with poor outcomes. Histologic disease activity has been shown to be associated with relapse, colectomy and colorectal cancer. The ability to objectively evaluate microscopic disease activity using histology is important for both clinical practice and clinical trials. However, the operating properties of the currently available histologic indices remain unclear...
May 25, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28540290/biomarkers-and-microscopic-colitis-an-unmet-need-in-clinical-practice
#11
REVIEW
Laura Francesca Pisani, Gian Eugenio Tontini, Beatrice Marinoni, Vincenzo Villanacci, Barbara Bruni, Maurizio Vecchi, Luca Pastorelli
One of the most common causes of chronic diarrhea is ascribed to microscopic colitis (MC). MC is classified in subtypes: collagenous colitis (CC) and lymphocytic colitis (LC). Patients with MC report watery, non-bloody diarrhea of chronic course, abdominal pain, weight loss, and fatigue that may impair patient's health-related quality of life. A greater awareness, and concomitantly an increasing number of diagnoses over the last years, has demonstrated that the incidence and prevalence of MC are on the rise...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28498152/oligoclonal-t-cell-receptor-repertoire-in-colonic-biopsies-of-patients-with-microscopic-colitis-and-ulcerative-colitis
#12
Sezin Günaltay, Dirk Repsilber, Gisela Helenius, Nils Nyhlin, Johan Bohr, Olof Hultgren, Elisabeth Hultgren Hörnquist
BACKGROUND: Microscopic colitis (MC), comprising collagenous colitis (CC) and lymphocytic colitis (LC), is a type of variation of inflammatory bowel diseases. Local T-cell infiltration in the mucosa plays a major role in MC immunopathology. METHODS: To understand diversity and clonality of infiltrating T cells, we analyzed the T-cell receptor beta (TCRβ) chains in colonic biopsies of MC, ulcerative colitis (UC), and their remission counterparts (CC/LC-HR [histological remission] or UC-R [remission]) compared with patients with noninflamed colons using next-generation sequencing...
May 10, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28488312/immune-modulator-therapy-for-microscopic-colitis-in-a-case-series-of-73-patients
#13
T G Cotter, A K Kamboj, S B Hicks, W J Tremaine, E V Loftus, D S Pardi
BACKGROUND: Microscopic colitis (MC) is a common cause of chronic diarrhoea. Various treatment options have been described, but there are limited data describing outcomes of corticosteroid-sparing treatments. AIM: To evaluate the outcomes of patients with active MC treated with immune modulators. METHODS: All patients seen at Mayo Clinic, Rochester between January 1, 1997 and November 30, 2016 with a histological diagnosis of MC were identified...
May 10, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28472831/endocytoscopy-can-be-used-to-assess-histological-healing-in-ulcerative-colitis
#14
Yoshihiro Nakazato, Makoto Naganuma, Shinya Sugimoto, Rieko Bessho, Mari Arai, Hiroki Kiyohara, Keiko Ono, Kosaku Nanki, Makoto Mutaguchi, Shinta Mizuno, Taku Kobayashi, Naoki Hosoe, Masayuki Shimoda, Takayuki Abe, Nagamu Inoue, Haruhiko Ogata, Yasushi Iwao, Takanori Kanai
Background and study aim Endocytoscopy (ECS) is used in the in vivo microscopic inspection of microstructural mucosal features and enables endoscopists to assess the histological severity of ulcerative colitis (UC). The aim of this study was to assess histological healing in UC patients by using ECS. Patients and methods A total of 64 patients in clinical and endoscopic remission who underwent ECS were selected. The correlation between the ECS score and Geboes score at the rectum was evaluated in patients with a Mayo endoscopic score (MES) of 0...
May 4, 2017: Endoscopy
https://www.readbyqxmd.com/read/28471835/early-life-exposure-lifestyle-and-comorbidity-as-risk-factors-for-microscopic-colitis-a-case-control-study
#15
Bas P M Verhaegh, Marieke J Pierik, Danny Goudkade, Yvette S M T Cuijpers, Ad A M Masclee, Daisy M A E Jonkers
BACKGROUND: The pathophysiology of microscopic colitis (MC) is not fully understood. A dysregulation of the adaptive immune response has been hypothesized, of which the maturation and function is imprinted in early life. Various other factors (e.g., hormonal factors) have also been found to be associated, sometimes, with minimal or conflicting evidence. The aims of this study were to evaluate whether an exposure to (microbial) agents in early life might be protective for MC development and to assess the role of several less well-established risk factors in one study...
May 2, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28428105/microcarcinoid-arising-in-patients-with-long-standing-ulcerative-colitis-histological-analysis
#16
Sachie Kanada, Akira Sugita, Tetuo Mikami, Kenichi Ohashi, Hiroyuki Hayashi
Some case reports of neuroendocrine tumors (NETs) and neuroendocrine carcinoma (NEC) associated with ulcerative colitis (UC) have been published. Most NET cases are small lesions corresponding to microcarcinoids (MCs). However, published case reports have presented findings of MCs as single-case reports. Thus, the frequency of MCs is still unclear. In this study, we described the clinical and morphological features of 14 cases of UC-associated MC and estimated the frequency of MC. Consecutive patients with UC who underwent complete removal of the large intestine were assessed, and 135 patients were selected...
April 17, 2017: Human Pathology
https://www.readbyqxmd.com/read/28425943/beneficial-effect-of-voluntary-exercise-on-experimental-colitis-in-mice-fed-a-high-fat-diet-the-role-of-irisin-adiponectin-and-proinflammatory-biomarkers
#17
Agnieszka Irena Mazur-Bialy, Jan Bilski, Dagmara Wojcik, Bartosz Brzozowski, Marcin Surmiak, Magdalena Hubalewska-Mazgaj, Anna Chmura, Marcin Magierowski, Katarzyna Magierowska, Tomasz Mach, Tomasz Brzozowski
Inflammatory bowel diseases (IBDs) are a heterogeneous group of disorders exhibited by two major phenotypic forms: Crohn's disease and ulcerative colitis. Although the aetiology of IBD is unknown, several factors coming from the adipose tissue and skeletal muscles, such as cytokines, adipokines and myokines, were suggested in the pathogenesis of ulcerative colitis; however, it has not been extensively studied whether voluntary exercise can ameliorate that disorder. We explored the effect of moderate exercise (i...
April 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28420140/oleuropein-decreases-cyclooxygenase-2-and-interleukin-17-expression-and-attenuates-inflammatory-damage-in-colonic-samples-from-ulcerative-colitis-patients
#18
Tiziana Larussa, Manuela Oliverio, Evelina Suraci, Marta Greco, Roberta Placida, Serena Gervasi, Raffaella Marasco, Maria Imeneo, Donatella Paolino, Luigi Tucci, Elio Gulletta, Massimo Fresta, Antonio Procopio, Francesco Luzza
Oleuropein (OLE) is the major phenolic secoiridoid of olive tree leaves, and its antioxidant and anti-inflammatory activities have been demonstrated in in vitro and in vivo animal models. The aim of this study was to investigate the activity of OLE in the colonic mucosa from patients with ulcerative colitis (UC). Biopsies obtained during colonoscopy from 14 patients with active UC were immediately placed in an organ culture chamber and challenged with lipopolysaccharide from Escherichia coli (EC-LPS) at 1 μg/mL in the presence or absence of 3 mM OLE...
April 15, 2017: Nutrients
https://www.readbyqxmd.com/read/28373409/activation-of-tgf-%C3%AE-activated-kinase-1-promotes-colon-mucosal-pathogenesis-in-inflammatory-bowel-disease
#19
Zhiwei Liu, Fansheng Kong, Jefferson E Vallance, Eleana Harmel-Laws, Surya Amarachintha, Kris A Steinbrecher, Michael J Rosen, Sandip Bhattacharyya
The etiology and mechanisms for inflammatory bowel disease (IBD) are incompletely known. Determination of new, clinically important mechanisms for intestinal inflammation is imperative for developing effective therapies to treat IBD We sought to define a widespread mechanism for colon mucosal inflammation via the activation of TGF-β activated Kinase 1 (TAK1), a central regulator of cellular inflammatory actions. Activation of TAK1 and the downstream inflammatory signaling mediators was determined in pediatric patients with ulcerative colitis (UC) or Crohn's disease (CD) as well as in DSS-induced and spontaneous IBD in mice...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28361841/effects-of-humanin-on-experimental-colitis-induced-by-2-4-6-trinitrobenzene-sulphonic-acid-in-rats
#20
Fatma A Gultekin, Ali U Emre, Sevim K Celik, Figen Barut, Ufuk Tali, Demet Sumer, Ummuhani O Turkcu
BACKGROUND/AIM: The excessive apoptosis of intestinal epithelial cells (IECs) partly accounts for the development of colonic inflammation and eventually results in ulcerative colitis (UC). Humanin, an endogenous anti-apoptotic peptide, has previously been shown to protect against Alzheimer's disease and a variety of cellular insults. The present study aimed to investigate the effects of glysin variant of humanin (HNG) on 2,4,6-trinitrobenzene sulphonic acid (TNBS)-induced colitis in rats...
March 2017: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
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