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Lymphocytic colitis

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https://www.readbyqxmd.com/read/29464806/histopathological-and-immunophenotypic-features-of-ipilimumab-associated-colitis-compared-to-ulcerative-colitis
#1
Brittany L Adler, Maryam K Pezhouh, Amy Kim, Lan Luan, Qingfeng Zhu, Faiz Gani, Mark Yarchoan, Jonathan Chen, Lysandra Voltaggio, Alyssa Parian, Mark Lazarev, Gregory Y Lauwers, Timothy M Pawlik, Elizabeth A Montgomery, Elizabeth Jaffee, Dung T Le, Janis M Taube, Robert A Anders
BACKGROUND: Use of the immune checkpoint inhibitor ipilimumab is sometimes complicated by ipilimumab-associated colitis (Ipi-AC), an immune-mediated colitis that mimics inflammatory bowel disease. OBJECTIVE: We sought to characterize the histopathologic and immunophenotypic features of Ipi-AC, and to directly compare these features to ulcerative colitis (UC). METHODS: This is a retrospective cohort study of 22 patients with Ipi-AC, 12 patients with treatment-naïve UC, and 5 controls with diarrhea but normal endoscopic findings...
February 21, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29459804/-concurrent-lymphocytic-colitis-and-microscopic-enteritis-in-patients-with-chronic-diarrhea
#2
Fernando Arévalo, Greys Vergara, Susy Ruiz, Joseph Castillo, Fiorella Zurita, Eduardo Monge
INTRODUCTION: Lymphocytic colitis and microscopic enteritis are relatively common causes of chronic diarrhea and it is characterized by an intraepithelial lymphocytic infiltrate. There have been no previous reports of coexistence between these 2 pathologies. OBJECTIVE: To describe histological and clinical characteristic in patients with coexistence of lymphocytic colitis and microscopic enteritis. MATERIAL AND METHODS: All cases with simultaneous diagnosis of lymphocytic duodenosis and lymphocytic colitis were reevaluated during lapse time 2010-2016 in hospital Daniel Carrion...
October 2017: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
https://www.readbyqxmd.com/read/29457048/farnesoid-x-receptor-expression-in-microscopic-colitis-a-potential-role-in-disease-etiopathogenesis
#3
Joana Torres, Carolina Palmela, Pedro Gomes de Sena, Maria Pia Costa Santos, Catarina Gouveia, Maria Helena Oliveira, Ana Raquel Henriques, Cecília Rodrigues, Marília Cravo, Paula Borralho
Introduction: Microscopic colitis (MC) is a chronic inflammatory bowel disease with unclear etiology. Bile acid (BA) malabsorption has been described in MC patients. Farnesoid X receptor (FXR) is the main BA receptor; FXR-mediated mechanisms prevent the noxious effects of BA accumulation, preserving the integrity of the intestinal epithelial barrier and preventing intestinal inflammation. Aim: Our aim was to describe the expression of FXR in patients with MC. Methods: Archival formalin-fixed paraffin-embedded samples from the terminal ileum, right and left colon were obtained from patients with MC and matched controls...
January 2018: GE Portuguese Journal of Gastroenterology
https://www.readbyqxmd.com/read/29452215/lymphocytic-colitis-pathologic-predictors-of-response-to-therapy
#4
Namrata Setia, Lindsay Alpert, Kimberley Wj van der Sloot, Dora Colussi, Kathleen O Stewart, Joseph Misdraji, Hamed Khalili, Gregory Y Lauwers
While the presence of intraepithelial lymphocytosis with surface epithelial damage is a unifying feature of lymphocytic colitis, there are non-classical features that create morphologic heterogeneity between cases. Limited data are available on the significance of these secondary histologic features. Cases of lymphocytic colitis diagnosed between 2002 and 2013 were identified using the Research Patient Data Registry of a tertiary referral center. Diagnostic biopsy slides were reviewed and evaluated for histologic features of lymphocytic colitis...
February 13, 2018: Human Pathology
https://www.readbyqxmd.com/read/29401166/the-risk-of-diarrhea-and-colitis-in-patients-with-advanced-melanoma-undergoing-immune-checkpoint-inhibitor-therapy-a-systematic-review-and-meta-analysis
#5
Parul Tandon, Samuel Bourassa-Blanchette, Kirles Bishay, Simon Parlow, Scott A Laurie, Jeffrey D McCurdy
Checkpoint inhibitors are a first-line therapy for advanced melanoma, though their use is limited by diarrhea and colitis. The aim of our study was to determine the risk of these toxicities associated with immunotherapy in advanced melanoma. Electronic databases were searched through June 2017 for prospective studies reporting the risk of diarrhea and colitis in advanced melanoma treated with anti-programmed death-1 (PD-1) or anti-cytotoxic T-lymphocyte antigen-4 (CTLA-4) inhibitors. Standardized definitions assessed the grade of diarrhea and colitis...
February 2, 2018: Journal of Immunotherapy
https://www.readbyqxmd.com/read/29387476/immune-checkpoint-inhibition-related-colitis-symptoms-endoscopic-features-histology-and-response-to-management
#6
REVIEW
Marnix H Geukes Foppen, Elisa A Rozeman, Sandra van Wilpe, Cindy Postma, Petur Snaebjornsson, Johannes V van Thienen, Monique E van Leerdam, Michel van den Heuvel, Christian U Blank, Jolanda van Dieren, John B A G Haanen
Background: Immune checkpoint inhibitors are successfully introduced as anticancer treatment. However, they may induce severe immune-related adverse events (irAEs). One of the most frequent irAEs is diarrhoea. The main objective of this study was to analyse symptoms (ie, grade of diarrhoea), endoscopic and histological features and response to management in immune checkpoint inhibition-related colitis (IRC). Patients and methods: We retrospectively analysed patients who developed diarrhoea on checkpoint inhibition and therefore underwent an endoscopy and/or were treated with corticosteroids...
2018: ESMO Open
https://www.readbyqxmd.com/read/29382851/gimap5-dependent-inactivation-of-gsk3%C3%AE-is-required-for-cd4-t-cell-homeostasis-and-prevention-of-immune-pathology
#7
Andrew R Patterson, Mehari Endale, Kristin Lampe, Halil I Aksoylar, Aron Flagg, Jim R Woodgett, David Hildeman, Michael B Jordan, Harinder Singh, Zeynep Kucuk, Jack Bleesing, Kasper Hoebe
GTPase of immunity-associated protein 5 (Gimap5) is linked with lymphocyte survival, autoimmunity, and colitis, but its mechanisms of action are unclear. Here, we show that Gimap5 is essential for the inactivation of glycogen synthase kinase-3β (GSK3β) following T cell activation. In the absence of Gimap5, constitutive GSK3β activity constrains c-Myc induction and NFATc1 nuclear import, thereby limiting productive CD4+ T cell proliferation. Additionally, Gimap5 facilitates Ser389 phosphorylation and nuclear translocation of GSK3β, thereby limiting DNA damage in CD4+ T cells...
January 30, 2018: Nature Communications
https://www.readbyqxmd.com/read/29382152/evaluation-of-melatonin-secretion-and-metabolism-exponents-in-patients-with-ulcerative-and-lymphocytic-colitis
#8
Cezary Chojnacki, Janusz Błasiak, Jakub Fichna, Jan Chojnacki, Tomasz Popławski
Inflammatory bowel diseases, particularly ulcerative colitis (UC) and lymphocytic colitis (LC), affect many people. The role of melatonin in the pathogenesis of UC is precisely determined, whereas in LC it remains unknown. The aim of this study was to compare the expression of the melatonin-synthesizing enzymes tryptophan hydroxylase (TPH1), arylalkylamine-N-acetyltransferase (AANAT), and N-acetylserotonin methyltransferase (ASMT) in the colonic mucosa and urinary excretion of 6-sulfatoxymelatonin in patients with ulcerative and lymphocytic colitis...
January 29, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29377235/vedolizumab-in-patients-with-concurrent-primary-sclerosing-cholangitis-and-inflammatory-bowel-disease-does-not-improve-liver-biochemistry-but-is-safe-and-effective-for-the-bowel-disease
#9
B Christensen, D Micic, P R Gibson, A Yarur, E Bellaguarda, P Corsello, J N Gaetano, J Kinnucan, V L Rao, S Reddy, S Singh, J Pekow, D T Rubin
BACKGROUND: Blocking of lymphocyte trafficking to bile ducts is a potential mechanism to alter the disease course of patients with primary sclerosing cholangitis (PSC). AIM: To describe the effect of the α4 β7 integrin antibody, vedolizumab, on liver biochemistry and disease activity in patients with PSC and inflammatory bowel disease (IBD). METHODS: This is a retrospective multi-centre study of adult patients with a diagnosis of both IBD and PSC...
January 29, 2018: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29372476/identification-of-candidate-biomarkers-associated-with-response-to-vedolizumab-in-inflammatory-bowel-disease
#10
Elisa K Boden, Donna M Shows, Michael V Chiorean, James D Lord
BACKGROUND/AIMS: Vedolizumab is an anti-α4β7 monoclonal antibody approved for the treatment of inflammatory bowel disease (IBD). This exploratory study aimed to identify biomarkers associated with vedolizumab response. METHODS: Twenty-six IBD patients (15 with Crohn's, 11 with ulcerative or indeterminate colitis) initiating vedolizumab at a single center between 2014 and 2016 underwent sampling of serum and peripheral blood mononuclear cells (PBMCs) before and during vedolizumab therapy...
January 25, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29370359/smoking-is-associated-with-an-increased-risk-of-microscopic-colitis-results-from-two-large-prospective-cohort-studies-of-us-women
#11
Kristin E Burke, Ashwin N Ananthakrishnan, Paul Lochhead, Ola Olen, Jonas F Ludvigsson, James M Richter, Andrew T Chan, Hamed Khalili
Introduction: Long-term data on the influence of smoking on risk of microscopic colitis are limited. We therefore sought to examine and characterize the association between smoking and risk of incident microscopic colitis in two large prospective cohorts of women. Methods: We conducted a prospective study of 231,015 women enrolled in the Nurses' Health Study (NHS) and NHSII. Information regarding smoking, other lifestyle factors, and medications were collected biennially from 1976 to 2012 in NHS and 1989 to 2013 in NHSII...
January 23, 2018: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/29361100/assessing-the-optimal-position-for-vedolizumab-in-the-treatment-of-ulcerative-colitis-a-simulation-model
#12
Frank I Scott, Yash Shah, Karen Lasch, Michelle Luo, James D Lewis
Background: Vedolizumab, an α4β7 integrin monoclonal antibody inhibiting gut lymphocyte trafficking, is an effective treatment for ulcerative colitis (UC). We evaluated the optimal position of vedolizumab in the UC treatment paradigm. Methods: Using Markov modeling, we assessed multiple algorithms for the treatment of UC. The base case was a 35-year-old male with steroid-dependent moderately to severely active UC without previous immunomodulator or biologic use...
January 18, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29358873/stricturing-crohn-s-disease-like-colitis-in-a-patient-treated-with-belatacept
#13
Anne Bozon, Guillaume Jeantet, Benjamin Rivière, Natalie Funakoshi, Gaspard Dufour, Roman Combes, Jean-Christophe Valats, Sylvie Delmas, Jean Emmanuel Serre, Michael Bismuth, Jeanne Ramos, Moglie Le Quintrec, Pierre Blanc, Guillaume Pineton de Chambrun
Cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) modifying agents have been involved in the development of intestinal inflammation, especially therapeutic monoclonal antibodies directed against CTLA-4. Here we report the appearance of a severe stricturing Crohn's disease-like colitis in a patient with a kidney allograft who was treated with belatacept, a recombinant CTLA-4-Ig fusion protein.
December 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29358862/childhood-onset-inflammatory-bowel-diseases-associated-with-mutation-of-wiskott-aldrich-syndrome-protein-gene
#14
Takashi Ohya, Masakatsu Yanagimachi, Kentaro Iwasawa, Shuichiro Umetsu, Tsuyoshi Sogo, Ayano Inui, Tomoo Fujisawa, Shuichi Ito
AIM: To screen primary immunodeficiency, Wiskott-Aldrich syndrome (WAS), and chronic granulomatous disease (CGD) among children with inflammatory bowel disease (IBD). METHODS: This was a single-center retrospective study. Eighteen children with IBD were investigated. We analyzed their expression of Wiskott-Aldrich syndrome protein (WASP) in lymphocytes and superoxide generation in phagocytes using flow cytometry. When the expression of WASP or superoxide generation was low or absent, we performed genetic analysis to determine the cause of this...
December 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29346345/the-cytosolic-sensor-sting-is-required-for-intestinal-homeostasis-and-control-of-inflammation
#15
M C C Canesso, L Lemos, T C Neves, F M Marim, T B R Castro, É S Veloso, C P Queiroz, J Ahn, H C Santiago, F S Martins, J Alves-Silva, E Ferreira, D C Cara, A T Vieira, G N Barber, S C Oliveira, A M C Faria
STING (stimulator of interferon genes) is a cytosolic sensor for cyclic dinucleotides and also an adaptor molecule for intracellular DNA receptors. Although STING has important functions in the host defense against pathogens and in autoimmune diseases, its physiological relevance in intestinal homeostasis is largely unknown. In this study, we show that STING-/- mice presented defective protective mechanisms of intestinal mucosa, including decreased number of goblet cells, diminished mucus production, and lower levels of secretory IgA, when compared with wild-type (WT) mice...
December 20, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/29336057/modification-of-lymphocyte-migration-to-peyer-s-patches-by-inhibition-of-sphingosine-1-phosphate-lyase-ameliorates-murine-colitis
#16
Kazuhiko Shirakabe, Masaaki Higashiyama, Hirotaka Furuhashi, Takeshi Takajo, Koji Maruta, Yoshikiyo Okada, Chie Kurihara, Chikako Watanabe, Shunsuke Komoto, Kengo Tomita, Shigeaki Nagao, Soichiro Miura, Masayuki Saruta, Ryota Hokari
BACKGROUND AND AIM: Sphingosine-1-phosphate (S1P) receptor 1, a therapeutic target of the S1P1 agonist FTY720, plays a crucial role in lymphocyte migration and is expressed in several cells including naïve T lymphocytes and endothelial cells. 2-acetyl-4-tetrahydroxybutyl imidazole (THI), an inhibitor of S1P lyase (SPL), exhibits immunomodulatory activity through increasing the S1P concentration in the secondary lymphoid organs, but its effects on colitis remain unclear. We aimed to clarify how THI affects colitis and migration of naïve T lymphocytes in Peyer's patches (PPs)...
January 15, 2018: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29317939/medical-treatment-for-microscopic-colitis-a-community-hospital-s-experience
#17
Abdallah Haidar, Savreet Kaur, Nancy Jackson, Jose Mari Parungao, Michael Piper, Alan Cutler
Background: Lymphocytic colitis (LC) is a chronic disorder characterized by watery diarrhea. This study sought to evaluate if LC recurs after therapy, and the time frame in which this occurs. Secondary objectives included length and type of therapy, drug-free intervals, and reasons for drug discontinuation. Methods: A retrospective chart review between January 1, 2008 and October 30, 2015 of patients with biopsy-confirmed lymphocytic, collagenous, or microscopic colitis was conducted...
December 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/29309091/toxic-injury-to-the-gastrointestinal-tract-after-ipilimumab-therapy-for-advanced-melanoma
#18
Benjamin Shepard, Carrie Trower, Scott Hendrickson
Ipilimumab, cytotoxic T-lymphocyte-associated protein 4-blocking antibody, is known to precipitate tissue-specific immune-related adverse events. The second most common site for immune-related adverse events is the gastrointestinal tract, with toxic injury resulting in diarrhea, colitis, and enterocolitis. In the present case, a woman who received ipilimumab 2 weeks prior was found to have severe, diffuse corticosteroid-refractory gastrointestinal tract toxic injury affecting the stomach, small bowel, and colon...
January 1, 2018: Journal of the American Osteopathic Association
https://www.readbyqxmd.com/read/29288684/the-octapetide-nap-alleviates-intestinal-and-extra-intestinal-anti-inflammatory-sequelae-of-acute-experimental-colitis
#19
Markus M Heimesaat, Eliezer Giladi, Anja A Kühl, Stefan Bereswill, Illana Gozes
The octapeptide NAP has been shown to exert neuroprotective properties and reduce neuro-inflammatory responses. The aim of the present study was to investigate if NAP provides anti-inflammatory effects in acute murine colitis. To address this, C57BL/6 j mice were challenged with 3.5% dextran sulfate sodium from day 0 until day 6 to induce colitis, either treated intraperitoneally with NAP or placebo (NaCl 0.9%) from day 1 until day 6 post-induction (p.i.) and subjected to in depth macroscopic, microscopic and immunological evaluations...
December 27, 2017: Peptides
https://www.readbyqxmd.com/read/29282618/hair-mineral-and-trace-element-contents-as-reliable-markers-of-nutritional-status-compared-to-serum-levels-of-these-elements-in-children-newly-diagnosed-with-inflammatory-bowel-disease
#20
Jin Min Cho, Hye Ran Yang
Patients with inflammatory bowel disease (IBD) are at high risk for nutritional deficiencies because of long-term inflammation in the gut mucosa and decreased oral intake. Because inflammation responses affect serum micronutrient concentrations, serum levels are limited in reflecting body nutrient status in acute and chronic illness. We investigated the usefulness of measuring trace elements in hair as reliable markers of nutritional status compared to serum levels in children with IBD. We retrospectively analyzed pediatric patients newly diagnosed with Crohn's disease (n = 49) and ulcerative colitis (n = 16) and controls (n = 29) from 2012 to 2016...
December 27, 2017: Biological Trace Element Research
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