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Dysplasia in inflammatory bowel disease

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https://www.readbyqxmd.com/read/28524162/targeted-sequencing-based-analyses-of-candidate-gene-variants-in-ulcerative-colitis-associated-colorectal-neoplasia
#1
Sanjiban Chakrabarty, Vinay Koshy Varghese, Pranoy Sahu, Pradyumna Jayaram, Bhadravathi M Shivakumar, Cannanore Ganesh Pai, Kapaettu Satyamoorthy
BACKGROUND: Long-standing ulcerative colitis (UC) leading to colorectal cancer (CRC) is one of the most serious and life-threatening consequences acknowledged globally. Ulcerative colitis-associated colorectal carcinogenesis showed distinct molecular alterations when compared with sporadic colorectal carcinoma. METHODS: Targeted sequencing of 409 genes in tissue samples of 18 long-standing UC subjects at high risk of colorectal carcinoma (UCHR) was performed to identify somatic driver mutations, which may be involved in the molecular changes during the transformation of non-dysplastic mucosa to high-grade dysplasia...
May 18, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28501251/dysplasia-and-cancer-in-inflammatory-bowel-disease
#2
REVIEW
Lyen C Huang, Amit Merchea
Inflammatory bowel disease is associated with an increased risk of dysplasia and cancer. Improvements in medical management and endoscopic surveillance have reduced these risks. Patients can develop cancer even in the absence of dysplasia or with indefinite or low-grade dysplasia. Most guidelines recommend starting surveillance colonoscopy 6 to 10 years after initial diagnosis with interval surveillance afterward every 1 to 5 years depending on risk and/or individual characteristics. Most patients should undergo total proctocolectomy with end ileostomy or reconstruction with ileal pouch anal anastomosis because segmental and subtotal resections carry a higher risk of metachronous cancers...
June 2017: Surgical Clinics of North America
https://www.readbyqxmd.com/read/28475382/dysplasia-and-colorectal-cancer-surveillance-in-inflammatory-bowel-disease
#3
Samba Siva Reddy Pulusu, Ian C Lawrance
Inflammatory bowel disease (IBD) patients are at an increased risk of developing colorectal cancer (CRC), a devastating complication of which intestinal dysplasia is the precursor. Considerable progress has been made to determine CRC risk in IBD, identification & management of dysplasia and preventative methods. Traditionally, surveillance colonoscopies with random colonic biopsies was used. However recent data suggests that chromoendoscopy is a better method of surveillance. Using 5-aminosalicylic acid agents primarily for chemoprevention is an ongoing debate however, when prescribed along with other strategies to control inflammation, their use is considered of benefit...
May 5, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28428272/hur-small-molecule-inhibitor-elicits-differential-effects-in-adenomatosis-polyposis-and-colorectal-carcinogenesis
#4
Michaela Lang, David Berry, Katharina Passecker, Ildiko Mesteri, Sabin Bhuju, Florian Ebner, Vitaly Sedlyarov, Rayko Evstatiev, Kyle Dammann, Alexander Loy, Orest Kuzyk, Pavel Kovarik, Vineeta Khare, Martin Beibel, Guglielmo Roma, Nicole Meisner-Kober, Christoph Gasche
HuR is an RNA-binding protein implicated in immune homeostasis and various cancers, including colorectal cancer. HuR binding to AU-rich elements within the 3' untranslated region of mRNAs encoding oncogenes, growth factors, and various cytokines leads message stability and translation. In this study, we evaluated HuR as a small-molecule target for preventing colorectal cancer in high-risk groups such as those with familial adenomatosis polyposis (FAP) or inflammatory bowel disease (IBD). In human specimens, levels of cytoplasmic HuR were increased in colonic epithelial cells from patients with IBD, IBD-cancer, FAP-adenoma, and colorectal cancer, but not in patients with IBD-dysplasia...
May 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/28369422/ileal-pouch-anal-anastomosis-for-dysplasia-or-cancer-complicating-inflammatory-bowel-disease-is-total-mesorectal-excision-always-mandatory-an-analysis-of-36-consecutive-patients
#5
Chloé Coton, Léon Maggiori, Diane Mège, Clotilde Naudot, Justine Prost À la Denise, Yves Panis
Background & Aim: The extent of lymph node harvesting during surgery for colorectal neoplasm (dysplasia and/or cancer) complicating inflammatory bowel disease (IBD) is the matter of debate. This study aimed to assess the risk of invasive rectal cancer in patients undergoing ileal pouch-anal anastomosis (IPAA) for colonic neoplasm complicating IBD, and thus to clarify if a systematic total mesorectal excision (TME) should be systematically performed or not in those patients. Methods: From 1998 to 2015, all patients who underwent IPAA for colorectal neoplasm complicating IBD were included...
March 22, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28338484/the-importance-of-biopsy-sampling-practices-in-the-pathologic-evaluation-of-gastrointestinal-disorders
#6
Nicole C Panarelli, Rhonda K Yantiss
PURPOSE OF REVIEW: To summarize the literature regarding appropriate endoscopic sampling and surveillance protocols for common inflammatory diseases of the digestive tract. Gastroenterologists increasingly use endoscopy with mucosal biopsy to detect inflammatory diseases, assess response to therapy, and monitor for progression to dysplasia. RECENT FINDINGS: Many diseases show a patchy distribution in the digestive tract and there may be poor correlation between the endoscopic appearance and presence of histologic abnormalities...
September 2016: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/28337224/gut-mesenchymal-stromal-cells-in-immunity
#7
REVIEW
Valeria Messina, Carla Buccione, Giulia Marotta, Giovanna Ziccheddu, Michele Signore, Gianfranco Mattia, Rossella Puglisi, Benedetto Sacchetti, Livia Biancone, Mauro Valtieri
Mesenchymal stromal cells (MSCs), first found in bone marrow (BM), are the structural architects of all organs, participating in most biological functions. MSCs possess tissue-specific signatures that allow their discrimination according to their origin and location. Among their multiple functions, MSCs closely interact with immune cells, orchestrating their activity to maintain overall homeostasis. The phenotype of tissue MSCs residing in the bowel overlaps with myofibroblasts, lining the bottom walls of intestinal crypts (pericryptal) or interspersed within intestinal submucosa (intercryptal)...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28321155/pseudopolyps-in-inflammatory-bowel-diseases-have-we-learned-enough
#8
REVIEW
Dimitrios S Politis, Konstantinos H Katsanos, Epameinondas V Tsianos, Dimitrios K Christodoulou
Pseudopolyps are a well described entity in the literature and even though the exact pathogenesis of their formation is not completely understood, they are considered non-neoplastic lesions originating from the mucosa after repeated periods of inflammation and ulceration associated with excessive healing processes. Their occurrence is less common in Crohn's disease than in ulcerative colitis, and their overall prevalence ranges from 4% to 74%; moreover, they are found more often in colon but have been detected in other parts of the gastrointestinal tract as well...
March 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28301579/a-novel-model-of-colitis-associated-cancer-in-samp1-yitfc-mice-with-crohn-s-disease-like-ileitis
#9
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/28276810/surveillance-strategies-for-colitis-associated-cancer-state-of-the-art-and-future-perspectives
#10
Gian Eugenio Tontini, Timo Rath, Luca Pastorelli, Maurizio Vecchi, Helmut Neumann
Colitis-associated cancer (CAC) represents a concrete risk of morbidity and mortality in patients with long lasting inflammatory bowel diseases. Surveillance colonoscopy is a rapidly evolving research field with profound changes from the traditional approach based on scheduled controls and random biopsy protocols. Areas covered: A literature search was performed using PubMed/Embase to review the latest evidence supporting the need for surveillance colonoscopy. By focusing on the most promising recent advances in this field, we provide a state-of-the-art overview of the current gold standards for the diagnosis and management of colitis-associated dysplasia...
May 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28263971/egfr-mediated-macrophage-activation-promotes-colitis-associated-tumorigenesis
#11
D M Hardbower, L A Coburn, M Asim, K Singh, J C Sierra, D P Barry, A P Gobert, M B Piazuelo, M K Washington, K T Wilson
Epidermal growth factor receptor (EGFR) signaling is a known mediator of colorectal carcinogenesis. Studies have focused on the role of EGFR signaling in epithelial cells, although the exact nature of the role of EGFR in colorectal carcinogenesis remains a topic of debate. Here, we present evidence that EGFR signaling in myeloid cells, specifically macrophages, is critical for colon tumorigenesis in the azoxymethane-dextran sodium sulfate (AOM-DSS) model of colitis-associated carcinogenesis (CAC). In a human tissue microarray, colonic macrophages demonstrated robust EGFR activation in the pre-cancerous stages of colitis and dysplasia...
March 6, 2017: Oncogene
https://www.readbyqxmd.com/read/28261835/systematic-review-with-meta-analysis-use-of-5-aminosalicylates-and-risk-of-colorectal-neoplasia-in-patients-with-inflammatory-bowel-disease
#12
REVIEW
S Bonovas, G Fiorino, T Lytras, G Nikolopoulos, L Peyrin-Biroulet, S Danese
BACKGROUND: The relationship of 5-aminosalicylates' use with the risk of colorectal neoplasia in patients with inflammatory bowel disease (IBD) has been the focus of a growing body of research. AIM: To investigate this association through an updated meta-analysis of observational studies. METHODS: PubMed, Scopus and major conference proceedings were searched up to December 2016. The identified studies were evaluated for publication bias and heterogeneity...
May 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28182112/prevalence-and-anatomic-distribution-of-serrated-and-adenomatous-lesions-in-patients-with-inflammatory-bowel-disease
#13
Lik Hang Lee, Marietta Iacucci, Miriam Fort Gasia, Subrata Ghosh, Remo Panaccione, Stefan Urbanski
Background. Sessile serrated adenomas/polyps (SSA/Ps) and traditional serrated adenomas (TSAs) have not been well characterized in patients with inflammatory bowel disease (IBD). This study assesses the prevalence and anatomic distribution of SSA/Ps, TSAs, and conventional adenomas/dysplasia (Ad/Ds) in IBD patients. Methods. IBD patients with serrated, adenomatous, or hyperplastic lesions between 2005 and 2009 were identified in the regional tertiary-care hospital database. Clinicopathological information was reviewed and the histology of biopsies was reevaluated...
2017: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28174999/p224-virtual-chromoendoscopy-with-i-scan-as-alternative-to-dye-spray-chromoendoscopy-for-dysplasia-detection-in-long-standing-colonic-inflammatory-bowel-disease
#14
A Lόpez-Serrano, J M Paredes, A Polanco, C García, J Hervás, C Amurrio, A Pascual, M J Suárez, M Barrachina, E Moreno-Osset
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28172744/op026-zero-diagnostic-yield-of-dysplasia-in-polyp-adjacent-biopsies-for-patients-with-inflammatory-bowel-disease
#15
C Lahiff, L M Wang, S P L Travis, J E East
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28172467/dop064-high-rate-of-advanced-neoplasia-after-detection-of-low-grade-dysplasia-in-inflammatory-bowel-disease-patients-with-primary-sclerosing-cholangitis
#16
J R Ten Hove, J Torres, D Castaneda, C Palmela, E Mooiweer, S C Shah, J-F Colombel, T Ullman, S H Itzkowitz, B Oldenburg
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28147393/surveillance-for-dysplasia-in-inflammatory-bowel-disease-it-is-time-to-move-forward
#17
Hazem Hammad, Tonya Kaltenbach, Roy Soetikno
No abstract text is available yet for this article.
February 2017: Endoscopy
https://www.readbyqxmd.com/read/28129293/ocular-surface-epithelial-atypia-mimicking-squamous-neoplasia-in-association-with-ulcerative-colitis
#18
Sally S Ong, Scott D Walter, Xi Chen, Gargi K Vora, Melissa Daluvoy, Alan D Proia, Prithvi Mruthyunjaya
PURPOSE: Inflammatory bowel disease may be associated with extraintestinal manifestations. We report a case of severe reactive epithelial atypia resembling ocular surface squamous neoplasia (OSSN) in a patient with ulcerative colitis (UC). METHODS: Case report. RESULTS: A 32-year-old woman presented with sequential, progressive keratoconjunctival lesions in the left and right eyes, and both lesions were excised. Anterior segment optical coherence tomography demonstrated features similar to OSSN, whereas histological examination revealed severe reactive epithelial atypia mimicking severe dysplasia...
January 26, 2017: Cornea
https://www.readbyqxmd.com/read/28126349/full-spectrum-endoscopy-improves-surveillance-for-dysplasia-in-patients-with-inflammatory-bowel-diseases
#19
Rupert W Leong, Marie Ooi, Crispin Corte, Yunki Yau, Melissa Kermeen, Peter H Katelaris, Charles McDonald, Meng Ngu
BACKGROUND & AIMS: Inflammatory bowel diseases (IBDs) increase the risk of colorectal cancer. Surveillance colonoscopy with chromoendoscopy is recommended, but conventional forward-viewing colonoscopy (FVC) detects dysplasia with low levels of sensitivity. Full-spectrum endoscopy (FUSE) incorporates 2 additional lateral cameras to the forward camera of the colonoscope, allowing endoscopists to view behind folds and in blind spots, which might increase dysplasia detection. We compared FUSE vs FVC in the detection of dysplasia in patients with IBDs...
May 2017: Gastroenterology
https://www.readbyqxmd.com/read/28078646/mucosal-healing-in-ulcerative-colitis-a-comprehensive-review
#20
REVIEW
Pedro Boal Carvalho, José Cotter
Ulcerative colitis (UC) is a chronic inflammatory bowel disease characterized by periods of remission and periods of relapse. Patients often present with symptoms such as rectal bleeding, diarrhea and weight loss, and may require hospitalization and even colectomy. Long-term complications of UC include decreased quality of life and productivity and an increased risk of colorectal cancer. Mucosal healing (MH) has gained progressive importance in the management of UC patients. In this article, we review the endoscopic findings that define both mucosal injury and MH, and the strengths and limitations of the scoring systems currently available in clinical practice...
February 2017: Drugs
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