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Lymphocytic colitis

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https://www.readbyqxmd.com/read/28812128/protective-effect-of-cigarette-smoke-on-the-course-of-dextran-sulfate-sodium-induced-colitis-is-accompanied-by-lymphocyte-subpopulation-changes-in-the-blood-and-colon
#1
Jaroslaw Daniluk, Urszula Daniluk, Joanna Reszec, Malgorzata Rusak, Milena Dabrowska, Andrzej Dabrowski
BACKGROUND: Cigarette smoke (CS) exerts protective effect against ulcerative colitis. The mechanism of this phenomenon remains unknown. One of the possible explanation by which CS exerts its anti-inflammatory action is modulation of immune system. Therefore, the aim of the study was to evaluate the effect of CS on the course of inflammation and subpopulations of lymphocytes in the blood and colon in mice with dextran sulfate sodium (DSS)-induced colitis. METHODS: C57BL6/cmdb mice were exposed to CS for 4 weeks...
August 16, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28806959/second-line-therapy-for-helicobacter-pylori-eradication-causing-antibiotic-associated-hemorrhagic-colitis
#2
Kazuyuki Tanaka, Mikihiro Fujiya, Aki Sakatani, Shugo Fujibayashi, Yoshiki Nomura, Nobuhiro Ueno, Shin Kashima, Takuma Goto, Junpei Sasajima, Kentaro Moriichi, Toshikatsu Okumura
OBJECTIVE: Helicobacter pylori (H. pylori) eradication rarely develops into antibiotic-associated hemorrhagic colitis (AAHC), in which the etiology of colitis remains unclear. We herein report a rare case of AAHC caused by second-line therapy for H. pylori eradication. RESULTS: A 65-year-old female was administered second-line therapy for H. pylori composed of 1500 mg of amoxicillin, 500 mg of metronidazole and 40 mg of vonoprazan for 7 days because of first-line therapy failure...
August 14, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28796840/yes-research-matters
#3
Mari L Shinohara
My father was diagnosed with stomach cancer recently. Luckily, it was still at an early stage, and endoscopic surgery successfully took care of it. My father was fortunate; since people with stomach cancer do not show clear symptoms in the early stages, the disease is often not diagnosed until it becomes advanced. In his case, the diagnosis started from a suggestion by his doctor to check whether he had a gastric infection with Helicobacter pylori, a bacterial species found in the digestive tract. In Japan, where he lives, a majority of gastric cancer patients (more than 99%) have been infected with H...
August 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28770550/association-of-the-haem-oxygenase-1-gene-with-inflammatory-bowel-disease
#4
Zhenwu Lin, Han Hao, John P Hegarty, Tony R Lin, Yunhua Wang, Leonard R Harris, He N Xu, Rongling Wu, Neal J Thomas, Joanna Floros
The anti-inflammatory genes, haem oxygenase 1 (HO-1, HMOX1) rs2071746 (unrestricted model: p = 9.07 × 10-4; recessive model: p = 4.99 × 10-4; multiplicative model: p = 0.0009; and additive model: p = 1.87 × 10-4) and interleukin-10 (IL-10) rs1800872 (dominant model: p = 0.0277) have been associated with paediatric inflammatory bowel disease. The present family-based case-trio study (n = 52) examined HO-1 gene expression in the presence of proinflammatory lipopolysaccharide and tumour necrosis factor-alpha in four B lymphocyte cell lines established from children with inflammatory bowel disease and demonstrated that mutations in IL-10 and IL-10 receptor B reduced HO-1 messenger RNA expression...
August 3, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28765121/novel-therapies-for-immune-mediated-inflammatory-diseases-what-can-we-learn-from-their-use-in-rheumatoid-arthritis-spondyloarthritis-systemic-lupus-erythematosus-psoriasis-crohn-s-disease-and-ulcerative-colitis
#5
REVIEW
Kenneth F Baker, John D Isaacs
The past three decades have witnessed remarkable advances in our ability to target specific elements of the immune and inflammatory response, fuelled by advances in both biotechnology and disease knowledge. As well as providing superior treatments for immune-mediated inflammatory diseases (IMIDs), such therapies also offer unrivalled opportunities to study the underlying immunopathological basis of these conditions.In this review, we explore recent approaches to the treatment of IMIDs and the insights to pathobiology that they provide...
August 1, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28761890/microscopic-colitis-after-fecal-microbiota-transplant
#6
Matthew J Fasullo, Yasir Al-Azzawi, Jeffrey Abergel
Microscopic colitis (MC) is an inflammatory condition of the large bowel that is associated with chronic, nonbloody diarrhea. Colonoscopy usually demonstrates normal mucosa, while tissue biopsy reveals intraepithelial lymphocytes or a subepithelial collagen band. Although no specific antibody has been discovered, MC is associated with several autoimmune disorders such as celiac disease, Hashimoto's thyroiditis, and rheumatoid arthritis. There are only a small number of case reports documenting possible hereditary MC cases, but up to 12% of patients with MC have a family history of inflammatory bowel disease...
2017: ACG Case Reports Journal
https://www.readbyqxmd.com/read/28756234/anti-tumor-necrosis-factor-with-a-glyco-engineered-fc-region-has-increased-efficacy-in-mice-with-colitis
#7
Felicia M Bloemendaal, Alon D Levin, Manon E Wildenberg, Pim J Koelink, Bradford L McRae, Jochen Salfeld, Jenifer Lum, Marijn van der Neut Kolfschoten, Jill W Claassens, Remco Visser, Arthur Bentlage, Geert R A M D'Haens, J Sjef Verbeek, Gestur Vidarsson, Gijs R van den Brink
BACKGROUND & AIMS: Although tumor necrosis factor (TNF) antagonists reduce many clinical features of inflammatory bowel disease (IBD), complete mucosal healing occurs in less than 50% of patients. The Fc region of monoclonal antibodies against TNF has immunosuppressive properties via effects on macrophage polarization. We examined the interaction between the anti-TNF Fc region and Fcγ receptors (FcγR), and whether the absence of the Fc core fucose (which increases binding to FcγRIIIa) increases the efficacy of anti-TNF in mice with colitis...
July 26, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28754259/inflammation-regulates-11%C3%AE-hydroxysteroid-dehydrogenase-type-1-differentially-in-specific-compartments-of-the-gut-mucosal-immune-system
#8
Peter Ergang, Martin Vodička, Karla Vagnerová, Martin Moravec, Pavlína Kvapilová, Milan Kment, Jiří Pácha
The bioavailability of glucocorticoids is modulated by enzyme 11β-hydroxysteroid dehydrogenase type 1 (11HSD1), which catalyzes the conversion of inactive 11-oxo-glucocorticoids to active 11-hydroxy-glucocorticoids cortisol and corticosterone and is regulated by pro-inflammatory cytokines. Our aim was to assess the effect of colitis on the expression of 11HSD1 in specific microanatomical compartments of the mucosal immune system. Using qRT-PCR we quantified the expression of 11HSD1 and cytokines in the colon, mesenteric lymph nodes (MLN) and spleen of mice with colitis...
July 25, 2017: Steroids
https://www.readbyqxmd.com/read/28729154/tremelimumab-as-second-line-or-third-line-treatment-in-relapsed-malignant-mesothelioma-determine-a-multicentre-international-randomised-double-blind-placebo-controlled-phase-2b-trial
#9
Michele Maio, Arnaud Scherpereel, Luana Calabrò, Joachim Aerts, Susana Cedres Perez, Alessandra Bearz, Kristiaan Nackaerts, Dean A Fennell, Dariusz Kowalski, Anne S Tsao, Paul Taylor, Federica Grosso, Scott J Antonia, Anna K Nowak, Maria Taboada, Martina Puglisi, Paul K Stockman, Hedy L Kindler
BACKGROUND: New therapeutic strategies for malignant mesothelioma are urgently needed. In the DETERMINE study, we investigated the effects of the cytotoxic-T-lymphocyte-associated antigen 4 (CTLA-4) monoclonal antibody tremelimumab in patients with previously treated advanced malignant mesothelioma. METHODS: DETERMINE was a double-blind, placebo-controlled, phase 2b trial done at 105 study centres across 19 countries in patients with unresectable pleural or peritoneal malignant mesothelioma who had progressed after one or two previous systemic treatments for advanced disease...
July 17, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28724302/efficacy-and-safety-of-vedolizumab-as-a-treatment-option-for-moderate-to-severe-refractory-ulcerative-colitis-in-two-patients-after-liver-transplant-due-to-primary-sclerosing-cholangitis
#10
Raúl Vicente Olmedo Martín, Víctor Amo Trillo, Rocío González Grande, Miguel Jiménez Pérez
Vedolizumab is a humanized IgG1 monoclonal antibody that selectively blocks the lymphocyte integrin α4β7 and prevents its interaction with endothelial adhesion molecules and subsequent transmigration to the gastrointestinal tract. The drug was approved in 2014 for the induction and maintenance treatment of ulcerative colitis and moderate to severe Crohn's disease that is refractory or intolerant to conventional treatment with corticoids and immunosuppressants and/or anti-TNFα drugs. However, inflammatory bowel disease has a variable behavior following liver transplant...
July 14, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28717845/proteomics-in-inflammatory-bowel-disease-approach-using-animal-models
#11
REVIEW
Fadi H Mourad, Yunki Yau, Valerie C Wasinger, Rupert W Leong
Recently, proteomics studies have provided important information on the role of proteins in health and disease. In the domain of inflammatory bowel disease, proteomics has shed important light on the pathogenesis and pathophysiology of inflammation and has contributed to the discovery of some putative clinical biomarkers of disease activity. By being able to obtain a large number of specimens from multiple sites and control for confounding environmental, genetic, and metabolic factors, proteomics studies using animal models of colitis offered an alternative approach to human studies...
July 17, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28702956/interventions-for-treating-lymphocytic-colitis
#12
REVIEW
Nilesh Chande, Noor Al Yatama, Tania Bhanji, Tran M Nguyen, John Wd McDonald, John K MacDonald
BACKGROUND: Lymphocytic colitis is a cause of chronic diarrhea. It is a subtype of microscopic colitis characterized by chronic, watery, non-bloody diarrhea and normal endoscopic and radiologic findings. The etiology of this disorder is unknown.Therapy is based mainly on case series and uncontrolled trials, or by extrapolation of data for treating collagenous colitis, a related disorder. This review is an update of a previously published Cochrane review. OBJECTIVES: To evaluate the efficacy and safety of treatments for clinically active lymphocytic colitis...
July 13, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28686677/mdr1a-deficiency-restrains-tumor-growth-in-murine-colitis-associated-carcinogenesis
#13
Eva Maria Hennenberg, Annette Eyking, Henning Reis, Elke Cario
Patients with Ulcerative Colitis (UC) have an increased risk to develop colitis-associated colorectal cancer (CAC). Here, we found that protein expression of ABCB1 (ATP Binding Cassette Subfamily B Member 1) / MDR1 (multidrug resistance 1) was diminished in the intestinal mucosa of patients with active UC with or without CAC, but not in non-UC patients with sporadic colon cancer. We investigated the consequences of ABCB1/MDR1 loss-of-function in a common murine model for CAC (AOM/DSS). Mice deficient in MDR1A (MDR1A KO) showed enhanced intratumoral inflammation and cellular damage, which were associated with reduced colonic tumor size and decreased degree of dysplasia, when compared to wild-type (WT)...
2017: PloS One
https://www.readbyqxmd.com/read/28679488/toward-a-new-kind-of-vaccine-a-logical-extension-of-the-symmetrical-immune-network-theory
#14
Reginald Gorczynski, Geoffrey Hoffmann
BACKGROUND: The symmetrical immune network theory, developed in 1975, is based on the existence of specific T cell factors and hypothesizes that normal IgG immune responses comprise the production of 2 kinds of antibodies, namely antigen-specific antibodies and anti-idiotypic antibodies. OBJECTIVE: The aim of this study was to confirm the existence of specific T cells factors and to show that immunization of C3H mice with BL/6 skin or using nominal antigen for immunization (Tetanus Toxoid) induced production of antigen-specific (anti-BL/6 or antitetanus) antibodies plus anti-idiotypic antibodies (C3H anti-anti-C3H)...
July 5, 2017: Interactive Journal of Medical Research
https://www.readbyqxmd.com/read/28677759/analysis-of-murine-and-human-treg-subsets-in-inflammatory-bowel-disease
#15
Xiaoyun Sun, Shaoheng He, Changlong Lv, Xun Sun, Junling Wang, Wenjiao Zheng, Danan Wang
Previous studies have indicated that regulatory T cells serve essential roles in maintaining intestinal homeostasis, however, the role of different Treg subsets in modulating inflammatory bowel disease has still not been addressed clearly. In the present study, the authors measured the percentage of Foxp3+ IL‑10+ TGF‑β+ natural Tregs, Foxp3‑ IL‑10+ TGF‑β‑ induced Tregs, CD127‑ induced Tregs and CD8+ Tregs at different time points in DSS‑induced experimental colitis model in murine lamina propria lymphocytes, mesenteric lymph node and peripheral blood...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28669150/prevalence-pathogenesis-diagnosis-and-management-of-microscopic-colitis
#16
REVIEW
Nicole Gentile, Eugene F Yen
Microscopic colitis (MC), which is comprised of lymphocytic colitis and collagenous colitis, is a clinicopathological diagnosis that is commonly encountered in clinical practice during the evaluation and management of chronic diarrhea. With an incidence approaching the incidence of inflammatory bowel disease, physician awareness is necessary, as diagnostic delays result in a poor quality of life and increased health care costs. The physician faces multiple challenges in the diagnosis and management of MC, as these patients frequently relapse after successful treatment...
July 4, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28666240/myasthenia-gravis-an-emerging-toxicity-of-immune-checkpoint-inhibitors
#17
REVIEW
D Makarious, K Horwood, J I G Coward
The advent of immunotherapy has heralded a number of significant advances in the treatment of particular malignancies associated with poor prognosis (melanoma, non-small-cell lung, renal and head/neck cancers). The success witnessed with therapeutic agents targeting cytotoxic T-lymphocyte-associated protein 4, programmed cell death protein 1 and programmed cell death ligand 1 immune checkpoints has inevitably led to an explosion in their clinical application and the subsequent recognition of specific toxicity profiles distinct from those long recognised with chemotherapy...
September 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28651306/heme-oxygenase-1-induction-and-anti-inflammatory-actions-of-atractylodes-macrocephala-and-taraxacum-herba-extracts-prevented-colitis-and-was-more-effective-than-sulfasalazine-in-preventing-relapse
#18
Kyu-Hyun Han, Jong-Min Park, Migyeong Jeong, Young-Min Han, Eun-Jin Go, Juyeon Park, Hocheol Kim, Jae Gab Han, Oran Kwon, Ki Baik Hahm
Background/Aims: In inflammatory bowel disease (IBD), repeated bouts of remission and relapse occur in patients and can impose a risk of colitis-associated cancer. We hypothesized that plant extracts of Atractylodes macrocephala (AM) or Taraxacum herba (TH) may be better than sulfasalazine for treating this disease because these extracts can promote additional regeneration. Methods: Murine intestinal epithelial IEC-6 cells were pretreated with AM or TH before a lipopolysaccharide (LPS)-induced challenge...
June 27, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28638225/sodium-selenite-ameliorates-dextran-sulfate-sodium-induced-chronic-colitis-in-mice-by-decreasing-th1-th17-and-%C3%AE-%C3%AE-t-and-increasing-cd4-cd25-regulatory-t-cell-responses
#19
Li-Xuan Sang, Bing Chang, Jun-Feng Zhu, Fang-Li Yang, Yan Li, Xue-Feng Jiang, Da-Nan Wang, Chang-Long Lu, Xun Sun
AIM: To assess the effect of sodium selenite on the severity of dextran sulfate sodium (DSS)-induced colitis in C57BL/6 mice. METHODS: Mice were randomly divided into four groups (n = 10/group): normal group, selenium (Se) group, chronic colitis group, and Se + chronic colitis group. The mice were sacrificed on day 26. Survival rates, clinical symptoms, colon length, and histological changes were determined. The percentages and absolute numbers of immune system cells in the lamina propria lymphocytes (LPL) of the colon, the expression of mRNA in colon tissue, and the concentrations of Th1, Th17, and Treg cytokines in LPL from the large intestine, were measured...
June 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28626406/late-onset-inflammatory-bowel-disease-like-syndrome-after-ipilimumab-therapy-a-case-report
#20
Reem Akel, Bilal Anouti, Arafat Tfayli
BACKGROUND: Antitumor immunotherapy has become a major player in cancer therapy. Ipilimumab is a humanized monoclonal antibody against the cytotoxic T lymphocyte-associated antigen 4 (CTLA-4), an important downregulator of T-cell activation. Ipilimumab has demonstrated tumor regression and improvement in overall survival in patients with metastatic melanoma. Unfortunately, immune activation induced by this drug has been associated with several immune-mediated adverse effects, namely diarrhea and colitis...
May 2017: Case Reports in Oncology
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