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https://www.readbyqxmd.com/read/28333202/risk-of-rectal-neoplasia-after-colectomy-and-ileorectal-anastomosis-for-ulcerative-colitis
#1
Mathieu Uzzan, Julien Kirchgesner, Nadia Oubaya, Aurélien Amiot, Jean-Marc Gornet, Philippe Seksik, Stéphane Nancey, Eddy Cotte, Matthieu Allez, Gilles Boschetti, David Laharie, Nicola de Angelis, Maria Nachury, Anne-Laure Pelletier, Vered Abitbol, Mathurin Fumery, Antoine Brouquet, Anthony Buisson, Romain Altwegg, Jacques Cosnes, Yves Panis, Xavier Treton
Introduction-: Colectomy can be required in the management of ulcerative colitis (UC). While ileal pouch anal-anastomosis (IPAA) is the recommended reconstruction technique, ileorectal anastomosis (IRA) is still performed and might present some advantages. However, the risk of rectal neoplasia might limit its indication. The aims of our study were to determine the incidence of rectal neoplasias following IRA for UC and to identify risk factors associated with rectal carcinomas. Methods-: We performed a multicenter retrospective study including patients who underwent IRA for UC from 1960 to 2014 in 13 centers...
February 21, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28301579/a-novel-model-of-colitis-associated-cancer-in-samp1-yitfc-mice-with-crohn-s-disease-like-ileitis
#2
Paola Menghini, Luca Di Martino, Loris R Lopetuso, Daniele Corridoni, Joshua C Webster, Wei Xin, Kristen O Arseneau, Minh Lam, Theresa T Pizarro, Fabio Cominelli
Patients with inflammatory bowel disease (IBD) are at increased risk for developing colorectal cancer. Evidence suggests that colonic dysplasia and colitis-associated cancer (CAC) are often linked to repeated cycles of epithelial cell injury and repair in the context of chronic production of inflammatory cytokines. Several mouse models of CAC have been proposed, including chemical induction through exposure to dextran sulfate sodium (DSS) with the genotoxic agents azoxymethane (AOM), 1,2-dymethylhydrazine (DHM) or targeted genetic mutations...
2017: PloS One
https://www.readbyqxmd.com/read/28255443/well-differentiated-adenocarcinoma-associated-with-ulcerative-colitis
#3
Tomoko Yamamoto, Atsuko Hiroi, Hiroko Itagaki, Yoichiro Kato, Bunei Iizuka, Michio Itabashi, Noriyuki Shibata, Yoji Nagashima
OBJECTIVES: Adenocarcinoma is known to be associated with ulcerative colitis, but the diagnosis is sometimes challenging, both clinically and pathologically. METHODS AND RESULTS: We present a case of extremely well-differentiated adenocarcinoma associated with ulcerative colitis, in which preoperative diagnosis was not possible. Glands in biopsy specimens showed a serrated appearance that looked like low-grade dysplasia or regenerative mucosa. After an operation due to severe symptoms of stenosis, carcinoma was diagnosed...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28244237/usefulness-of-confocal-laser-endomicroscopy-to-diagnose-ulcerative-colitis-associated-neoplasia
#4
Naoki Ohmiya, Noriyuki Horiguchi, Tomomitsu Tahara, Dai Yoshida, Hyuga Yamada, Mitsuo Nagasaka, Yoshihito Nakagawa, Tomoyuki Shibata, Tetsuya Tsukamoto, Makoto Kuroda
Chromoendoscopy, narrow-band imaging (NBI), and confocal laser endomicroscopy (CLE) have been introduced in ulcerative colitis (UC)-associated neoplasia surveillance. We aimed to determine the ability of CLE to differentiate among UC-associated neoplasia (differentiated type or undifferentiated type), sporadic adenoma, and circumscribed regenerative lesions. Of 665 patients with UC, we performed probe-based CLE (pCLE) on 12 patients with suspected UC-associated neoplasia in addition to magnifying chromoendoscopy with crystal violet and NBI...
February 28, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28225291/-a-contribution-to-the-differential-diagnostics-of-sclerosing-cholangitides
#5
Martin Blaho, Petr Dítě, Martina Bojková, Martin Rydlo, Tomáš Kupka, Pavel Svoboda, Pavel Klvaňa, Arnošt Martínek
Sclerosing cholangitides represent a group of chronic biliary obstructive diseases which include primary sclerosing cholangitis (PSC), IgG4 associated sclerosing cholangitis (IgG4-SC) and secondary sclerosing cholangitis (SSC). The manifestations of the diseases are similar, but their asymptomatic course is also frequent. IgG4-SC belongs to the group of IgG4 associated diseases and it is the most frequently related to type 1 autoimmune pancreatitis. Diagnosing of IgG4-SC is based on typical histopathological images, shape changes revealed by diagnostic imaging, serological tests, concurrent impairment of other organs and response to therapy, where IgG4-SC responds well to treatment with corticoids, whereas the only possibility for the remaining units is endoscopic intervention or liver transplantation...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28203173/squamous-cell-carcinoma-of-the-anal-transitional-zone-after-ileal-pouch-surgery-for-ulcerative-colitis-systematic-review-and-treatment-perspectives
#6
Gianluca Pellino, Christos Kontovounisios, Diana Tait, John Nicholls, Paris P Tekkis
BACKGROUND: Few cases of pouch-related cancers have been reported in ulcerative colitis (UC), and squamous cell carcinoma (SCC) is very rare. METHOD: A systematic review of the literature was performed to identify all unequivocal cases of pouch-related SCC in UC patients. RESULTS: Eight cases of SCC developing after ileal pouch-anal anastomosis (IPAA) have been observed since 1978. Two arose from the pouch mucosa and 6 from below. The pooled cumulative incidence of SCC is below 0...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28093447/inflammasomes-and-cancer
#7
Rajendra Karki, Si Ming Man, Thirumala-Devi Kanneganti
Inflammation affects all stages of tumorigenesis. A key signaling pathway leading to acute and chronic inflammation is through activation of the caspase-1 inflammasome. Inflammasome complexes are assembled on activation of certain nucleotide-binding domain, leucine-rich repeat-containing proteins (NLR), AIM2-like receptors, or pyrin. Of these, NLRP1, NLRP3, NLRC4, NLRP6, and AIM2 influence the pathogenesis of cancer by modulating innate and adaptive immune responses, cell death, proliferation, and/or the gut microbiota...
February 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/27927741/a-strong-neutrophil-elastase-proteolytic-fingerprint-marks-the-carcinoma-tumor-proteome
#8
Michał Kistowski, Janusz Dębski, Jakub Karczmarski, Agnieszka Paziewska, Jacek Olędzki, Michał Mikula, Jerzy Ostrowski, Michał Dadlez
Proteolytic cascades are deeply involved in critical stages of cancer progression. During the course of peptide-wise analysis of shotgun proteomic data sets representative of colon adenocarcinoma (AC) and ulcerative colitis (UC), we detected a cancer-specific proteolytic fingerprint composed of a set of numerous protein fragments cleaved C-terminally to V, I, A, T, or C residues, significantly overrepresented in AC. A peptide set linked by a common VIATC cleavage consensus was the only prominent cancer-specific proteolytic fingerprint detected...
February 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/27927666/epigenetic-biomarkers-in-progression-from-non-dysplastic-barrett-s-oesophagus-to-oesophageal-adenocarcinoma-a-systematic-review-protocol
#9
T Nieto, C L Tomlinson, J Dretzke, S Bayliss, M Dilworth, A D Beggs, O Tucker
INTRODUCTION: Barrett's oesophagus (BO), a metaplastic condition affecting the lower oesophagus due to long-standing gastro-oesophageal reflux and chronic inflammation, is a precursor lesion for oesophageal adenocarcinoma (OADC). There is no clinical test to predict which patients with BO will progress to OADC. The British Society of Gastroenterology recommends endoscopic surveillance of patients with BO. Epigenetic changes have been well characterised in the neoplastic progression of ulcerative colitis to colonic carcinoma, another gastrointestinal cancer associated with chronic inflammation...
December 7, 2016: BMJ Open
https://www.readbyqxmd.com/read/27885870/transanal-total-mesorectal-excision-for-restorative-coloproctectomy-in-an-obese-high-risk-patient-with-colitis-associated-carcinoma
#10
Laura Isabel Hanke, Fabian Bartsch, Sebastian Försch, Florian Heid, Hauke Lang, Werner Kneist
Transanal total mesorectal excision (TaTME) offers great potential for the treatment of malign and benign diseases. However, laparoscopic-assisted TaTME in ulcerative colitis has not been described in more than a handful of patients. We present a 47-year-old highly comorbid female patient with an ulcerative colitis-associated carcinoma of the ascending colon and steroid-refractory pancolitis. A two-stage restorative coloproctectomy including right-sided complete mesocolic excision was conducted. The second step consisted of a successful nerve-sparing TaTME and a handsewn ileal pouch-anal anastomosis...
November 25, 2016: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27864128/prostaglandin-e2-activates-yap-and-a-positive-signaling-loop-to-promote-colon-regeneration-after-colitis-but-also-carcinogenesis-in-mice
#11
Han-Byul Kim, Minchul Kim, Young-Soo Park, Intae Park, Tackhoon Kim, Sung-Yeun Yang, Charles J Cho, DaeHee Hwang, Jin-Hak Jung, Sanford D Markowitz, Sung Wook Hwang, Suk-Kyun Yang, Dae-Sik Lim, Seung-Jae Myung
BACKGROUND & AIMS: Prostaglandin E2 (PGE2) is mediator of inflammation that regulates tissue regeneration, but its continual activation has been associated with carcinogenesis. Little is known about factors in the PGE2 signaling pathway that contribute to tumor formation. We investigated whether yes-associated protein 1 (YAP1), a transcriptional co-activator in the Hippo signaling pathway, mediates PGE2 function. METHODS: DLD-1 and SW480 colon cancer cell lines were transfected with vectors expressing transgenes or small hairpin RNAs and incubated with recombinant PGE2, with or without pharmacologic inhibitors of signaling proteins, and analyzed by immunoblot, immunofluorescence, quantitative reverse-transcription polymerase chain reaction, transcriptional reporter, and proliferation assays...
February 2017: Gastroenterology
https://www.readbyqxmd.com/read/27853744/clinical-usefulness-of-narrow-band-imaging-magnifying-colonoscopy-for-assessing-ulcerative-colitis-associated-cancer-dysplasia
#12
Soki Nishiyama, Shiro Oka, Shinji Tanaka, Shintaro Sagami, Ryohei Hayashi, Yoshitaka Ueno, Koji Arihiro, Kazuaki Chayama
Background and study aims: Colitis-associated cancer/dysplasia (CC/D) can affect the life expectancy of patients with ulcerative colitis (UC). Although the utility of magnifying chromocolonoscopy has been shown, the use of optical magnification with narrow band imaging (NBI) for distinguishing CC/D from non-neoplastic lesions in patients with UC has not been reported. We evaluated whether endoscopic findings are distinguishing and thus assessed the clinical usefulness of NBI magnification for differentiating UC-associated lesions...
November 2016: Endoscopy International Open
https://www.readbyqxmd.com/read/27843449/short-term-efficacy-of-laparoscopic-treatment-for-colorectal-cancer-in-patients-with-schistosomiasis-japonica
#13
Zhu Yi, Jiang Hong-Gang, Chen Zhi-Heng, Lu Bo-Hao
Introduction. Schistosomiasis is associated with numerous complications such as thrombocytopenia, liver cirrhosis, portal hypertension, and colitis. To the best of our knowledge, the feasibility and outcomes of laparoscopic colorectal surgery in patients with schistosomiasis have not yet been studied. Methods. In this study, the data of 280 patients with colorectal carcinoma along with schistosomiasis japonica infection who underwent laparoscopic or open colorectal surgery were retrospectively analyzed. Preoperative data, operative data, pathological outcomes, postoperative complications, and recovery were compared between patients in the laparoscopic (LAC) and open (OC) groups...
2016: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/27825961/repression-of-microrna-function-mediates-inflammation-associated-colon-tumorigenesis
#14
Takeshi Yoshikawa, Jianfeng Wu, Motoyuki Otsuka, Takahiro Kishikawa, Nobumi Suzuki, Akemi Takata, Motoko Ohno, Rei Ishibashi, Mari Yamagami, Ryo Nakagawa, Naoya Kato, Masaaki Miyazawa, Jiahuai Han, Kazuhiko Koike
BACKGROUND & AIMS: Little is known about the mechanisms by which chronic inflammation contributes to carcinogenesis, such as the development of colon tumors in patients with inflammatory bowel diseases. Specific microRNA (miRNAs) can function as suppressors or oncogenes, and widespread alterations in miRNA expression have been associated with tumorigenesis. We studied whether alterations in miRNA function contribute to inflammation-associated colon carcinogenesis. METHODS: We studied the effects of inflammatory cytokines, such as tumor necrosis factor, interleukin-1α (IL1A), and IL1β (IL1B), on miRNA function, measured by activity of reporter constructs containing miRNA-binding sites in their 3' untranslated regions, in human 293T embryonic kidney, Caco-2, HT29, and HCT116 colon carcinoma cells, as well as dicer(+/+) and dicer(-/-), and Apobec3(+/+) and Apobec3(-/-) mouse embryonic fibroblasts...
November 5, 2016: Gastroenterology
https://www.readbyqxmd.com/read/27777770/safety-and-efficacy-of-anti-pd-1-in-patients-with-baseline-cardiac-renal-or-hepatic-dysfunction
#15
Bridgette A Kanz, Megan H Pollack, Romany Johnpulle, Igor Puzanov, Leora Horn, Alicia Morgans, Jeffrey A Sosman, Suthee Rapisuwon, R Martin Conry, Zeynep Eroglu, Douglas B Johnson
BACKGROUND: Anti-PD-1 therapy is increasingly used in various advanced malignancies. Patients with baseline organ dysfunction are largely excluded from clinical trials. Therefore it is unclear whether anti-PD-1 therapy is safe or effective in this setting. Further, these patients are often not candidates for other anti-cancer therapies, highlighting their need for active treatment options. METHODS: We performed a retrospective analysis of patients from multiple centers with advanced solid tumors and baseline organ dysfunction who received anti-PD-1 therapy...
2016: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/27766414/combining-aneuploidy-and-dysplasia-for-colitis-cancer-risk-assessment-outperforms-current-surveillance-efficiency-a-meta-analysis
#16
Rüdiger Meyer, Sandra Freitag-Wolf, Silke Blindow, Jürgen Büning, Jens K Habermann
PURPOSE: Cancer risk assessment for ulcerative colitis patients by evaluating histological changes through colonoscopy surveillance is still challenging. Thus, additional parameters of high prognostic impact for the development of colitis-associated carcinoma are necessary. This meta-analysis was conducted to clarify the value of aneuploidy as predictor for individual cancer risk compared with current surveillance parameters. METHODS: A systematic web-based search identified studies published in English that addressed the relevance of the ploidy status for individual cancer risk during surveillance in comparison to neoplastic mucosal changes...
February 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/27563706/selenoproteins-and-oxidative-stress-induced-inflammatory-tumorigenesis-in-the-gut
#17
REVIEW
Caitlyn W Barrett, Sarah P Short, Christopher S Williams
Selenium is an essential micronutrient that is incorporated into at least 25 selenoproteins encoded by the human genome, many of which serve antioxidant functions. Because patients with inflammatory bowel disease (IBD) demonstrate nutritional deficiencies and are at increased risk for colon cancer due to heightened inflammation and oxidative stress, selenoprotein dysfunction may contribute to disease progression. Over the years, numerous studies have analyzed the effects of selenoprotein loss and shown that they are important mediators of intestinal inflammation and carcinogenesis...
February 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/27562801/identification-of-signet-ring-cell-change-in-colonic-subserosa-in-the-setting-of-clostridium-difficile-colitis-report-of-a-nonneoplastic-mimicker-of-signet-ring-cell-carcinoma
#18
Omar Khan, Saverio Ligato
Signet ring cell change of intestinal epithelial cells is a rare but well-known mimicker of signet ring cell carcinoma and is often associated with ischemic and/or pseudomembranous colitis. Instead, signet ring cell change involving nonepithelial cells in the subserosa of the intestine is an extremely rare finding with only a single case report in the literature to date. We report a new case of benign signet ring cell change localized in the subserosa of the large bowel incidentally identified in a resection specimen for Clostridium difficile colitis mimicking a metastatic signet ring cell carcinoma...
August 25, 2016: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27517638/programmed-cell-death-1-pathway-inhibitors-in-genitourinary-malignancies-specific-side-effects-and-their-management
#19
Abhishek Tripathi, Marina D Kaymakcalan, Nicole R LeBoeuf, Lauren C Harshman
PURPOSE OF REVIEW: Immune checkpoint inhibitors such as those that target the programmed cell death (PD)-1 pathway harness the host immune system to elicit an antitumor response. Their remarkable clinical benefit has led to regulatory approvals in several malignancies including the genitourinary cancers, renal cell carcinoma, and urothelial carcinoma. This review will focus on the management of the toxicities encountered with these agents. RECENT FINDINGS: Although generally well tolerated, a small proportion of patients (10-20%) treated with PD-1 directed agents as monotherapy can develop severe autoimmune manifestations, also known as, immune-related adverse events...
November 2016: Current Opinion in Urology
https://www.readbyqxmd.com/read/27482886/egfr-regulates-macrophage-activation-and-function-in-bacterial-infection
#20
Dana M Hardbower, Kshipra Singh, Mohammad Asim, Thomas G Verriere, Danyvid Olivares-Villagómez, Daniel P Barry, Margaret M Allaman, M Kay Washington, Richard M Peek, M Blanca Piazuelo, Keith T Wilson
EGFR signaling regulates macrophage function, but its role in bacterial infection has not been investigated. Here, we assessed the role of macrophage EGFR signaling during infection with Helicobacter pylori, a bacterial pathogen that causes persistent inflammation and gastric cancer. EGFR was phosphorylated in murine and human macrophages during H. pylori infection. In human gastric tissues, elevated levels of phosphorylated EGFR were observed throughout the histologic cascade from gastritis to carcinoma. Deleting Egfr in myeloid cells attenuated gastritis and increased H...
September 1, 2016: Journal of Clinical Investigation
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