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Dysplasia in ulcerative colitis

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https://www.readbyqxmd.com/read/28927130/stereomicroscopic-features-of-colitis-associated-tumors-in-mice-evaluation-of-pit-pattern
#1
Ryosuke Yamauchi, Ken Kominato, Keiichi Mitsuyama, Hidetoshi Takedatsu, Shinichiro Yoshioka, Kotaro Kuwaki, Hiroshi Yamasaki, Shuhei Fukunaga, Atsushi Mori, Jun Akiba, Osamu Tsuruta, Takuji Torimura
Patients with longstanding ulcerative colitis have an increased risk of colorectal cancer. Mouse models for colitis-associated tumors are indispensable for the development of novel strategies for prevention and intervention, as well as an improved understanding of the mechanisms underlying tumor formation. The present study examined whether stereomicroscopic observations with dye-application were able to detect and discriminate tumors in a colitis-associated tumor model in mice. Colonic tumors were induced in C57BL/6 mice by 15 cycles of treatment with dextran sulfate sodium (DSS) in drinking water...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28922695/strategies-for-detecting-colon-cancer-in-patients-with-inflammatory-bowel-disease
#2
REVIEW
William A Bye, Tran M Nguyen, Claire E Parker, Vipul Jairath, James E East
BACKGROUND: Patients with longstanding ulcerative colitis and colonic Crohn's disease have an increased risk of colorectal cancer (CRC) compared with the general population. This review assessed the evidence that endoscopic surveillance may prolong life by allowing earlier detection of CRC or its pre-cursor lesion, dysplasia, in patients with inflammatory bowel disease (IBD). OBJECTIVES: To assess the effectiveness of cancer surveillance programs for diagnosis of IBD-associated colorectal cancer and in reducing the mortality rate from colorectal cancer in patients with IBD...
September 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28884228/expression-of-atf6-as-a-marker-of-pre-cancerous-atypical-change-in-ulcerative-colitis-associated-colorectal-cancer-a-potential-role-in-the-management-of-dysplasia
#3
Marie Hanaoka, Toshiaki Ishikawa, Megumi Ishiguro, Michiyo Tokura, Shinichi Yamauchi, Akifumi Kikuchi, Hiroyuki Uetake, Masamichi Yasuno, Tatsuyuki Kawano
BACKGROUND: Diagnosis of low-grade dysplasia (LGD) is important in the management of ulcerative colitis (UC), but it is often difficult to distinguish LGD from inflammatory regenerative epithelium. The unfolded protein response (UPR) is activated in inflammatory bowel disease and malignancies. We aimed to identify a UPR-related gene that is involved in the development of non-UC and UC-associated colorectal cancer (CRC), and to investigate whether the target gene is useful for the diagnosis of LGD...
September 7, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28882578/managing-ulcerative-colitis-patients-with-endoscopically-invisible-low-grade-dysplasia
#4
Ben Parker, James Buchanan, Sarah Wordsworth, Satish Keshav, Bruce George, James E East
BACKGROUND AND AIMS: There is uncertainty regarding the optimal management of endoscopically invisible ("flat") low grade dysplasia in ulcerative colitis. Such a finding does not currently provide an automatic indication for colectomy; however, a recommendation of surveillance instead of surgery is controversial. The aim of this study was to determine the clinical and cost-effectiveness of colonoscopic surveillance versus colectomy for endoscopically invisible low-grade dysplasia of the colon in ulcerative colitis...
September 4, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28843232/colorectal-cancer-and-precancerous-lesions-associated-with-ulcerative-colitis-in-thailand
#5
Peranart Chotivitayatarakorn, Ratha-Korn Vilaichone
Background: Ulcerative colitis(UC) is important risk factor of colorectal cancer. Many evidences from western countries confirmed this relationship but limited studies were reported in ASEAN. This study was aimed to investigate prevalence, clinical presentations, endoscopic findings, histopathology, disease progression and risk for colorectal cancer(CRC) of UC patients in Thailand. Methods: We conducted a retrospective cohort study using computer data base from Thammasat University Hospital, Pathumthani, Thailand between September 2011 and December 2015, follow-up through May 2016...
August 27, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28839872/advanced-imaging-in-colonoscopy-contemporary-approach-to-dysplasia-surveillance-in-inflammatory-bowel-disease
#6
Iosif Beintaris, Matt Rutter
Inflammatory bowel disease (IBD) (ulcerative colitis (UC) and Crohn's disease (CD)) is a chronic relapsing/remitting condition characterised by intestinal inflammation. One of the main concerns in patients with longstanding ulcerative and Crohn's colitis is development of colonic dysplasia and colorectal cancer (CRC), a risk higher than that of the general population. Colonoscopy surveillance programmes have been developed by major societies worldwide to improve early dysplasia detection and treatment, thus preventing progression to colorectal cancer...
October 2016: Frontline Gastroenterology
https://www.readbyqxmd.com/read/28836702/results-of-a-36-year-surveillance-program-for-ulcerative-colitis-associated-neoplasia-in-the-japanese-population
#7
Junko Kishikawa, Hata Keisuke, Shinsuke Kazama, Hiroyuki Anzai, Takahide Shinagawa, Koji Murono, Manabu Kaneko, Kazuhito Sasaki, Koji Yasuda, Kensuke Otani, Takeshi Nishikawa, Toshiaki Tanaka, Tomomichi Kiyomatsu, Kazushige Kawai, Hiroaki Nozawa, Soichiro Ishihara, Teppei Morikawa, Masashi Fukayama, Toshiaki Watanabe
BACKGROUND: Surveillance colonoscopy has been performed for patients with long-standing ulcerative colitis, who have an increased risk for colorectal cancer. The aim of this study was to determine the incidence of and the risk factors for neoplasia. METHODS: We evaluated 289 ulcerative colitis patients who underwent surveillance colonoscopy between January1979 and December 2014. The cumulative incidence of neoplasia and its risk factors were investigated. The clinical stage and overall survival were compared between the surveillance and non-surveillance groups...
August 24, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28826742/a-comprehensive-review-and-update-on-crohn-s-disease
#8
Mahesh Gajendran, Priyadarshini Loganathan, Anthony P Catinella, Jana G Hashash
The term inflammatory bowel disease (IBD) refers principally to two major categories of chronic relapsing inflammatory intestinal disorders: Crohn's disease (CD) and ulcerative colitis (UC). In the United States, it is currently estimated that about 1.5 million people suffer from IBD, causing considerable suffering, mortality and economic loss every year. Yet the cause of IBD is unknown, and until we understand more, prevention or cure will not be possible. There is a lot of variation in the incidence and prevalence of CD based on geographic region, environment, immigrant population, and ethnic groups...
August 18, 2017: Disease-a-month: DM
https://www.readbyqxmd.com/read/28818507/optimizing-quality-of-endoscopy-in-inflammatory-bowel-disease-focus-on-surveillance-and-management-of-colorectal-dysplasia-using-interactive-image-and-video-based-teaching
#9
Tonya R Kaltenbach, Roy M Soetikno, Rebecca DeVivo, Loren A Laine, Alan Barkun, Kenneth R McQuaid
BACKGROUND & AIMS: Varying recommendations regarding the detection and management of dysplasia can lead to uncertainty and may have impeded the uptake of strategies that could improve surveillance in patients with inflammatory bowel disease (IBD). As such, an educational event was held to assist in disseminating the recently published Surveillance for Colorectal Endoscopic Neoplasia Detection and Management in Inflammatory Bowel Disease Patients: International Consensus Recommendations (SCENIC)...
August 14, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28814670/mtg16-is-a-tumor-suppressor-in-colitis-associated-carcinoma
#10
Elizabeth M McDonough, Caitlyn W Barrett, Bobak Parang, Mukul K Mittal, J Joshua Smith, Amber M Bradley, Yash A Choksi, Lori A Coburn, Sarah P Short, Joshua J Thompson, Baolin Zhang, Shenika V Poindexter, Melissa A Fischer, Xi Chen, Jiang Li, Frank L Revetta, Rishi Naik, M Kay Washington, Michael J Rosen, Scott W Hiebert, Keith T Wilson, Christopher S Williams
MTG16 is a member of the myeloid translocation gene (MTG) family of transcriptional corepressors. While MTGs were originally identified in chromosomal translocations in acute myeloid leukemia, recent studies have uncovered a role in intestinal biology. For example, Mtg16-/- mice have increased intestinal proliferation and are more sensitive to intestinal injury in colitis models. MTG16 is also underexpressed in patients with moderate/severe ulcerative colitis. Based on these findings, we postulated that MTG16 might protect against colitis-associated carcinogenesis...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28811707/myo-inositol-reduces-%C3%AE-catenin-activation-in-colitis
#11
Emily M Bradford, Corey A Thompson, Tatiana Goretsky, Guang-Yu Yang, Luz M Rodriguez, Linheng Li, Terrence A Barrett
AIM: To assess dietary myo-inositol in reducing stem cell activation in colitis, and validate pβ-catenin(S552) as a biomarker of recurrent dysplasia. METHODS: We examined the effects of dietary myo-inositol treatment on inflammation, pβ-catenin(S552) and pAkt levels by histology and western blot in IL-10(-/-) and dextran sodium sulfate-treated colitic mice. Additionally, we assessed nuclear pβ-catenin(S552) in patients treated with myo-inositol in a clinical trial, and in patients with and without a history of colitis-induced dysplasia...
July 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28806821/endoscopic-submucosal-dissection-of-colitis-related-dysplasia
#12
Noriko Suzuki, Takashi Toyonaga, James E East
Background and study aims Endoscopic submucosal dissection (ESD) offers en bloc resection of lesions, allowing precise pathological assessment. Although possible in ulcerative colitis (UC) patients, the chronic inflammation may increase the procedural risks and reduce the complete resection rate. The aim of this study was to assess the feasibility of ESD for UC and to consider the factors contributing to its technical difficulty. Patients and methods Multicenter experiences of ESD for UC were retrospectively analyzed by reviewing endoscopic videos, pictures, reports, and clinical notes...
August 14, 2017: Endoscopy
https://www.readbyqxmd.com/read/28790093/aggressive-large-cell-neuroendocrine-carcinoma-of-the-sigmoid-colon-in-a-patient-with-ulcerative-colitis
#13
Patrick Stoner, Taban Ghaffaripour, David Cohen
Colonic inflammation seen in inflammatory bowel disease (IBD) predisposes to the development of colorectal adenocarcinoma. In contrast, colorectal neuroendocrine carcinomas (NECs) have rarely been reported in the setting of IBD, and no definitive relationship between these tumours and IBD has been established. Dysplasia from chronic inflammation leading to neuroendocrine cell differentiation may be responsible for NEC development, though this finding has not been seen consistently. We present a case of large-cell neuroendocrine carcinoma of the sigmoid colon in a 65-year-old woman with long-standing ulcerative colitis...
August 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28751935/chk1-promotes-dna-damage-response-bypass-following-oxidative-stress-in-a-model-of-hydrogen-peroxide-associated-ulcerative-colitis-through-jnk-inactivation-and-chromatin-binding
#14
Kathrin Reissig, Andrew Silver, Roland Hartig, Antje Schinlauer, Diana Walluscheck, Thomas Guenther, Sandra Siedentopf, Jochen Ross, Diep-Khanh Vo, Albert Roessner, Angela Poehlmann-Nitsche
Dysregulation of c-Jun N-terminal kinase (JNK) activation promoted DNA damage response bypass and tumorigenesis in our model of hydrogen peroxide-associated ulcerative colitis (UC) and in patients with quiescent UC (QUC), UC-related dysplasia, and UC-related carcinoma (UC-CRC), thereby adapting to oxidative stress. In the UC model, we have observed features of oncogenic transformation: increased proliferation, undetected DNA damage, and apoptosis resistance. Here, we show that Chk1 was downregulated but activated in the acute and quiescent chronic phases...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28751521/the-third-pathway-of-colorectal-carcinogenesis
#15
REVIEW
Carlos A Rubio, Giacomo Puppa, Giovanni de Petris, Lorand Kis, Peter T Schmidt
AIMS: The majority of the colorectal carcinomas (CRC) arise in a vast mucosal area built with columnar cells and mucus-producing goblet cells. These carcinomas evolve via the conventional (tubular/villous) adenoma-carcinoma pathway, or the serrated adenoma-carcinoma pathway. Much less frequently CRC arise in the gut-associated lymphoid tissue (GALT) mucosal domain via the third pathway of colorectal carcinogenesis. METHODS: All publications on human colorectal GALT carcinomas in the literature were reviewed...
July 27, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28706415/role-of-new-endoscopic-techniques-in-inflammatory-bowel-disease-management-has-the-change-come
#16
EDITORIAL
Loredana Goran, Lucian Negreanu, Ana Maria Negreanu
Despite significant therapeutic progress in recent years, inflammatory bowel disease (IBD), which includes Crohn's disease and ulcerative colitis, remains a challenge regarding its pathogenesis and long-term complications. New concepts have emerged in the management of this disease, such as the "treat-to-target" concept, in which mucosal healing plays a key role in the evolution of IBD, the risk of recurrence and the need for surgery. Endoscopy is essential for the assessment of mucosal inflammation and plays a pivotal role in the analysis of mucosal healing in patients with IBD...
June 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28694132/inflammatory-bowel-disease-and-small-bowel-cancer-risk-%C3%A2-clinical-characteristics-and-histopathology-a%C3%A2-population-based-study
#17
Rasmus Dahlin Bojesen, Lene Buhl Riis, Estrid Høgdall, Ole Haagen Nielsen, Tine Jess
BACKGROUND & AIMS: Inflammatory bowel disease (IBD) may increase risk of small bowel cancer (SBC). However, little is known of the characteristics and features of IBD-SBC, due to a low number of cases worldwide. We performed a population-based study of IBD and SBC to calculate risk and increase our understanding of clinical characteristics and histopathological and molecular features. METHODS: The study population consisted of all individuals aged 16 years or older living in Denmark during 1978-2010...
July 8, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28686677/mdr1a-deficiency-restrains-tumor-growth-in-murine-colitis-associated-carcinogenesis
#18
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/28666016/detection-of-colonic-dysplasia-in-patients-with-ulcerative-colitis-using-a-targeted-fluorescent-peptide-and-confocal-laser-endomicroscopy-a-pilot-study
#19
Giovanni Domenico De Palma, Irene Colavita, Gerardo Zambrano, Mariano Cesare Giglio, Francesco Maione, Gaetano Luglio, Giovanni Sarnelli, Antonio Rispo, Pietro Schettino, Francesco Paolo D'Armiento, Fatima Domenica Elisa De Palma, Valeria D'Argenio, Francesco Salvatore
AIM: Targeted molecular probes have been used to detect sporadic colonic dysplasia during confocal laser endomicroscopy (CLE) with promising results. This is a feasibility pilot study aiming to assess the potential role of CLE combined with a fluorescent-labeled peptide to stain and detect dysplasia associated with Ulcerative Colitis. METHOD: A phage-derived heptapeptide with predicted high binding affinity for dysplastic tissue, was synthesized and labeled with fluorescein...
2017: PloS One
https://www.readbyqxmd.com/read/28664992/the-outcome-of-ulcerative-colitis-patients-undergoing-pouch-surgery-is-determined-by-pre-surgical-factors
#20
H Yanai, S Ben-Shachar, L Mlynarsky, L Godny, M Leshno, H Tulchinsky, I Dotan
BACKGROUND: Pouch surgery, a common intervention for ulcerative colitis (UC) complications, is often associated with the development of pouchitis. AIM: To identify predictors of pouch outcome in a cohort of patients with UC. METHODS: We conducted a retrospective unmatched case-cohort study in a tertiary IBD referral centre. Adult patients with UC were classified into the worst phenotype throughout follow-up: normal pouch, a form of chronic pouchitis (either chronic pouchitis or Crohn's like disease of pouch [CLDP]), or episodic recurrent acute pouchitis (RAP)...
September 2017: Alimentary Pharmacology & Therapeutics
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