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Microscopic colitis

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https://www.readbyqxmd.com/read/29145246/case-report-pentoxifylline-treatment-in-microscopic-colitis
#1
Thomas G Cotter, Amrit K Kamboj, Stephen Bradley Hicks, William J Tremaine, Edward V Loftus, Darrell S Pardi
RATIONALE: Microscopic colitis is a common cause of diarrhea. Pentoxifylline, a xanthine derivative with anti-tumor necrosis factor-alpha properties, is prescribed for intermittent claudication and other disorders. Our goal was to evaluate the outcomes of patients with microscopic colitis treated with pentoxifylline. PATIENT CONCERNS: Nine patients with microscopic colitis (8 collagenous colitis and 1 lymphocytic colitis) seen at Mayo Clinic, Rochester, between January 1, 1997 and November 30, 2016, were included...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29132532/emerging-topics-in-gastroenterology
#2
REVIEW
Gretchen Irwin, Laura Mayans, Rick Kellerman
The bacteria and fungi in the human gut make up a community of microorganisms that lives in symbiosis with humans, engaging in numerous diverse interactions that influence health. This article outlines the current knowledge on emerging topics in gastroenterology, including microbiome and probiotics, fecal microbiota transplantation, cyclic vomiting syndrome, eosinophilic esophagitis, and microscopic colitis.
December 2017: Primary Care
https://www.readbyqxmd.com/read/29119003/novel-associations-of-bile-acid-diarrhoea-with-fatty-liver-disease-and-gallstones-a-cohort-retrospective-analysis
#3
Richard N Appleby, Jonathan D Nolan, Ian M Johnston, Sanjeev S Pattni, Jessica Fox, Julian Rf Walters
Background: Bile acid diarrhoea (BAD) is a common cause of chronic diarrhoea with a population prevalence of primary BAD around 1%. Previous studies have identified associations with low levels of the ileal hormone fibroblast growth factor 19 (FGF19), obesity and hypertriglyceridaemia. The aim of this study was to identify further associations of BAD. Methods: A cohort of patients with chronic diarrhoea who underwent (75)selenohomocholic acid taurate (SeHCAT) testing for BAD was further analysed retrospectively...
2017: BMJ Open Gastroenterology
https://www.readbyqxmd.com/read/29116551/anti-inflammatory-effect-of-a-novel-locally-acting-a2a-receptor-agonist-in-a-rat-model-of-oxazolone-induced-colitis
#4
L Antonioli, A El-Tayeb, C Pellegrini, M Fornai, O Awwad, G Giustarini, G Natale, L Ryskalin, Z H Németh, C E Müller, C Blandizzi, R Colucci
Adenosine represents a powerful modulating factor, which has been shown to orchestrate the scope, duration, and remission of the inflammatory response through the activation of four specific receptors, classified as A1, A2A, A2B, and A3, all being widely expressed in a variety of immune cells. Several selective A2A receptor agonists have displayed anti-inflammatory effects, through the suppression of IL-12, TNF, and IFN-γ production by monocytes and lymphocytes, in the setting of chronic intestinal inflammation...
November 8, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/29116460/potential-usefulness-of-methyl-gallate-in-the-treatment-of-experimental-colitis
#5
María Laura Anzoise, Angeles Rodríguez Basso, Julieta Sofía Del Mauro, Andrea Carranza, Graciela López Ordieres, Susana Gorzalczany
Methyl gallate is a gallotannin widely distributed in nature. Previous studies have demonstrated its antioxidant, anti-inflammatory, antimicrobial and anti-tumor activities. In the present study, the activity of methyl gallate on experimental models of inflammatory bowel disease has been investigated. Experimental colitis was induced in Sprague-Dawley rats through the intracolonic instillation of an acetic acid solution (2 mL, 4% v/v). Methyl gallate (100 and 300 mg/kg, p.o.) and the reference drug mesalazine (100 mg/kg, p...
November 7, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/29100842/faecal-microbiota-transplantation-versus-placebo-for-moderate-to-severe-irritable-bowel-syndrome-a-double-blind-randomised-placebo-controlled-parallel-group-single-centre-trial
#6
Peter Holger Johnsen, Frank Hilpüsch, Jorunn Pauline Cavanagh, Ingrid Sande Leikanger, Caroline Kolstad, Per Christian Valle, Rasmus Goll
BACKGROUND: Irritable bowel syndrome (IBS) is a common condition characterised by abdominal pain, bloating, and poor quality of life. IBS might be caused by a gut dysbiosis. We aimed to compare faecal microbiota transplantation (FMT) with placebo in patients with IBS. METHODS: In this double-blind, randomised, placebo-controlled, parallel-group, single-centre study, we enrolled patients with IBS with diarrhoea or with diarrhoea and constipation (excluding dominating constipation) defined by the ROME III criteria, scored as moderate to severe according to the IBS severity scoring system (IBS-SSS; a score of ≥175)...
October 31, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29078713/characterization-of-brusatol-self-microemulsifying-drug-delivery-system-and-its-therapeutic-effect-against-dextran-sodium-sulfate-induced-ulcerative-colitis-in-mice
#7
Jiangtao Zhou, Lihua Tan, Jianhui Xie, Zhengquan Lai, Yanfeng Huang, Chang Qu, Dandan Luo, Zhixiu Lin, Ping Huang, Ziren Su, Youliang Xie
Brusatol (BR) is one of the main bioactive components derived from Brucea javanica, a medicinal herb historically used in the treatment of dysenteric disorders (also known as ulcerative colitis(UC)). Due to its poor aqueous solubility, a novel brusatol self-microemulsifying drug delivery system (BR-SMEDDS) nanoformulation with smaller size, higher negative zeta potential and drug content, and excellent stability was developed. The appearance of BR-SMEDDS remained clear and transparent, and transmission electron microscopy showed microemulsion droplets to be spherical with homogeneous distribution...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/29078077/is-epstein-barr-virus-infection-associated-with-the-pathogenesis-of-microscopic-colitis
#8
Aroldo Gabriele Rizzo, Ambrogio Orlando, Elena Gallo, Andrea Bisanti, Stefania Sferrazza, Luigi Maria Montalbano, Fabio Salvatore Macaluso, Mario Cottone
BACKGROUND: Epstein-Barr virus (EBV) has been associated with inflammation in the colon, particularly in patients with inflammatory bowel disease (IBD). Even if a relevant plasmocytosis, similar to IBD, is present in microscopic colitis (MC), the frequency of EBV infection in this setting is unknown. OBJECTIVES: We aimed to compare the frequency of colonic EBV infection in patients with MC, ulcerative colitis (UC), and irritable bowel syndrome (IBS). STUDY DESIGN: The frequency of colonic EBV infection in biopsies of 30 patients with MC, 30 patients with UC, and 30 controls with IBS was retrospectively assessed...
October 20, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29067571/foeniculum-vulgare-essential-oil-ameliorates-acetic-acid-induced-colitis-in-rats-through-the-inhibition-of-nf-kb-pathway
#9
Seyed Mahdi Rezayat, Ahmad-Reza Dehpour, Saeed Mohammadi Motamed, Maryam Yazdanparast, Mohsen Chamanara, Mousa Sahebgharani, Amir Rashidian
AIM: The aim of the present study is to investigate the protective effects of Foeniculum vulgare essential oil on intestinal inflammation through the inhibition of NF-kB pathway in acetic acid-induced rat colitis. METHODS: Acute colitis was induced by intra-rectal administration of 2 mL of diluted acetic acid (4%) solution. Two hours after the induction of colitis, 0.2% tween 80 in normal saline, dexamethasone (2 mg/kg) and F. vulgare essential oil (100, 200, 400 mg/kg) were administered to the animals by oral gavage and continued for 5 consecutive days...
October 24, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/29063998/diabetes-mellitus-and-the-colon
#10
REVIEW
Marc S Piper, Richard J Saad
Diabetes mellitus (DM) can affect the structure and function of the colon promoting commonly encountered lower gastrointestinal symptoms such as constipation, diarrhea, abdominal distention, bloating, and abdominal pain. Specific colonic disorders for which adults with DM are at greater risk include chronic constipation, enteropathic diarrhea, colorectal cancer (CRC), inflammatory bowel disease, microscopic colitis, and Clostridium difficile colitis. Smooth muscle structure and function, density of the interstitial cells of Cajal, and the health and function of the autonomic and enteric nerves of the colon are all potential affected by DM...
December 2017: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/29049372/therapeutic-effect-of-imiquimod-on-dextran-sulfate-sodium-induced-ulcerative-colitis-in-mice
#11
Lu Chen, Zhongyin Zhou, Yan Yang, Na Chen, Hongyu Xiang
BACKGROUND: Imiquimod is a Toll-like receptor-7 agonist that regulates immunity and can be used as an immune adjuvant. Ulcerative colitis has a close correlation with immune disorder. AIM: To investigate the therapeutic effect of imiquimod on dextran sulfate sodium (DSS)-induced colitis and explore the underlying mechanisms. METHODS: C57BL/6J C57 mice received 3% DSS for 7 days to induce ulcerative colitis. Groups of mice were intraperitoneally injected with dexamethasone (DXM, 1...
2017: PloS One
https://www.readbyqxmd.com/read/29045560/inflammatory-gastrointestinal-diseases-associated-with-pd-1-blockade-antibodies
#12
M Collins, J M Michot, F X Danlos, C Mussini, E Soularue, C Mateus, D Loirat, A Buisson, I Rosa, O Lambotte, S Laghouati, N Chaput, C Coutzac, A L Voisin, J C Soria, A Marabelle, S Champiat, C Robert, F Carbonnel
Background: Immune check-point blockade agents have shown clinical activity in cancer patients but are associated with immune-related adverse events that could limit their development. The aim of this study was to describe the gastrointestinal immune-related adverse events (GI-irAE) in patients with cancer treated with anti-PD-1. Methods: this is a retrospective study of consecutive adult patients who had a suspected GI-irAE due to anti-PD-1 antibodies between 2013 and 2016...
November 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29036211/orally-administered-taenia-solium-calreticulin-prevents-experimental-intestinal-inflammation-and-is-associated-with-a-type-2-immune-response
#13
Fela Mendlovic, Mayra Cruz-Rivera, Jose Alfredo Diaz-Gandarilla, Marco Antonio Flores-Torres, Guillermina Avila, Maria Perfiliev, Ana Maria Salazar, Lourdes Arriaga-Pizano, Patricia Ostrosky-Wegman, Ana Flisser
Intestinal helminth antigens are inducers of type 2 responses and can elicit regulatory immune responses, resulting in dampened inflammation. Several platyhelminth proteins with anti-inflammatory activity have been reported. We have identified, cloned and expressed the Taenia solium calreticulin (rTsCRT) and shown that it predominantly induces a type 2 response characterized by IgG1, IL-4 and IL-5 production in mice. Here, we report the rTsCRT anti-inflammatory activity in a well-known experimental colitis murine model...
2017: PloS One
https://www.readbyqxmd.com/read/29023984/partial-to-complete-abrogation-of-the-sub-epithelial-macrophage-barrier-against-the-gut-microbiota-in-patients-with-ulcerative-colitis-and-crohn-s-colitis
#14
Carlos A Rubio, Cord Langner, Peter T Schmidt
AIMS: The integrity of the subepithelial band of indigenous macrophages in the lamina-propria (SLP-MΦ) is crucial in deterring the commensal gut-microbiota from host-assailment. The breakdown of the SLP-MΦ barrier results in microbiota inflow and improper immune responses; this might lead to IBD. During inflammation, the SLP-MΦ-barrier is reinforced by inflammation-elicited MΦ (IEMΦ, derived from blood-circulating monocytes). The aim was to explore the characteristics of the SLP-MΦ band in a cohort of biopsies without inflammation, in patients with ulcerative colitis-in remission (UCre), and in patients with right-sided Crohn's colitis (RCC)...
October 11, 2017: Histopathology
https://www.readbyqxmd.com/read/29017143/protective-effect-of-carvacrol-on-acetic-acid-induced-colitis
#15
Marilia Trindade de Santana Souza, Daiane Franco Teixeira, Janaíne Prata de Oliveira, Alan Santos Oliveira, Lucindo José Quintans-Júnior, Cristiane Bani Correa, Enilton Aparecido Camargo
The pharmacological therapy for inflammatory bowel diseases continues to be problematic, and requires new alternative options. In this study, we tested the hypothesis that carvacrol (CAR), a phenolic monoterpene with anti-inflammatory and antioxidant activities, can treat experimental colitis in mice. C57BL/6 mice (n=8/group) were subjected to intrarectal administration of acetic acid (5%) to induce colitis. Mice were pretreated with CAR (25, 50 or 100mg/kg, p.o.) every 12h for three days prior to the induction...
October 7, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28988395/effect-of-roxithromycin-on-mucosal-damage-oxidative-stress-and-pro-inflammatory-markers-in-experimental-model-of-colitis
#16
Hilal Ahmad, Sneh Verma, Vijay L Kumar
OBJECTIVE AND DESIGN: Roxithromycin, a macrolide antibiotic, exhibits anti-inflammatory property. The present study was designed to evaluate its protective effect in a rat model of colitis. METHODS: The anti-inflammatory property of roxithromycin was first validated in rat paw edema model at 5 and 20 mg/kg doses where it produced 19 and 51% inhibition of paw swelling induced by carrageenan. The efficacy of roxithromycin was evaluated at these doses in a rat model where colitis was induced by intra-colonic instillation of acetic acid...
October 7, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28882823/the-antioxidant-glutathione-protects-against-enteric-neuron-death-in-situ-but-its-depletion-is-protective-during-colitis
#17
Isola Am Brown, Brian D Gulbransen
Enteric glia play an important neuroprotective role in the enteric nervous system (ENS) by producing neuroprotective compounds such as the antioxidant reduced glutathione (GSH). The specific cellular pathways that regulate glial production of GSH, and how these pathways are altered during, or contribute to, neuroinflammation in situ and in vivo are not fully understood. We investigated this issue using immunohistochemistry to localize GSH synthesis enzymes within the myenteric plexus and tested how the inhibition of GSH synthesis with the selective inhibitor L-Buthionine Sulfoximine (BSO) impacts neuronal survival and inflammation...
September 7, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28874961/correlation-of-abnormal-histology-with-endoscopic-findings-among-mycophenolate-mofetil-treated-patients
#18
Mitchell A Izower, Merajur Rahman, Ernesto P Molmenti, Madhu C Bhaskaran, Viren G Amin, Sundas Khan, Keith Sultan
AIM: To describe all abnormal histological findings and their associated endoscopic presentation in patients using mycophenolate mofetil (MMF). METHODS: A retrospective review of all individuals prescribed MMF within 6 mo of a colonoscopy or flexible sigmoidoscopy between 07/2009 and 09/2015 was performed within Northwell Health system. Records were analyzed for age, gender, procedure indication, MMF indication, and both gross and microscopic findings. Only reports with abnormal histology were included...
August 16, 2017: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28871257/reactivation-of-intestinal-inflammation-is-suppressed-by-catestatin-in-a-murine-model-of-colitis-via-m1-macrophages-and-not-the-gut-microbiota
#19
Mohammad F Rabbi, Nour Eissa, Peris M Munyaka, Laëtitia Kermarrec, Omar Elgazzar, Ehsan Khafipour, Charles N Bernstein, Jean Eric Ghia
While there is growing awareness of a relationship between chromogranin-A (CHGA) and susceptibility to inflammatory conditions, the role of human catestatin [(hCTS); CHGA352-67] in the natural history of established inflammatory bowel disease is not known. Recently, using two different experimental models, we demonstrated that hCTS-treated mice develop less severe acute colitis. We have also shown the implication of the macrophages in this effect. The aims of this study were to determine (1) whether hCTS treatment could attenuate the reactivation of inflammation in adult mice with previously established chronic colitis; (2) whether this effect is mediated through macrophages or the gut microbiota...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28868268/effect-of-concentrated-apple-extract-on-experimental-colitis-induced-by-acetic-acid
#20
Maurício Mercaldi Pastrelo, Carla Caroline Dias Ribeiro, Joselmo Willamys Duarte, Andréa Pitelli Bioago Gollücke, Ricardo Artigiani-Neto, Daniel Araki Ribeiro, Sender Jankiel Miszputen, Celina Tizuko Fujiyama Oshima, Ana Paula Ribeiro Paiotti
Reactive oxygen and nitrogen species (ROS/RNS) play a crucial role in inflammatory bowel disease (IBD) exacerbating the chronic inflammatory process. Endogenous and diet antioxidants can neutralize these compounds. The apple is widely consumed, with several antioxidant activity compounds. The present study evaluated the effects of concentrated apple extract (CAE) in acetic acid induced colitis. 29 Wistar male rats were randomized into 5 groups. G1-Sham/saline solution, G2-CAE/control, G3-acetic acid/control, G4-curative- CAE treatment and G5-preventive-CAE treatment...
2017: International Journal of Molecular and Cellular Medicine
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