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Ibd surveillance

Brinda Bhatt, Peng Zeng, Huabin Zhu, Sathish Sivaprakasam, Siyi Li, Haiyan Xiao, Lixin Dong, Pamela Shiao, Ravindra Kolhe, Nikhil Patel, Honglin Li, Daniel Levy-Bercowski, Vadivel Ganapathy, Nagendra Singh
A set of coordinated interactions between gut microbiota and the immune cells surveilling the intestine play a key role in shaping local immune responses and intestinal health. Gpr109a is a G protein-coupled receptor expressed at a very high level on innate immune cells and previously shown to play a key role in the induction of colonic regulatory T cells. In this study, we show that Gpr109a-/- Rag1-/- mice exhibit spontaneous rectal prolapse and colonic inflammation, characterized by the presence of an elevated number of IL-17-producing Rorγt+ innate lymphoid cells (ILCs; ILC3)...
March 7, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
Katsuyoshi Matsuoka, Taku Kobayashi, Fumiaki Ueno, Toshiyuki Matsui, Fumihito Hirai, Nagamu Inoue, Jun Kato, Kenji Kobayashi, Kiyonori Kobayashi, Kazutaka Koganei, Reiko Kunisaki, Satoshi Motoya, Masakazu Nagahori, Hiroshi Nakase, Fumio Omata, Masayuki Saruta, Toshiaki Watanabe, Toshiaki Tanaka, Takanori Kanai, Yoshinori Noguchi, Ken-Ichi Takahashi, Kenji Watanabe, Toshifumi Hibi, Yasuo Suzuki, Mamoru Watanabe, Kentaro Sugano, Tooru Shimosegawa
Inflammatory bowel disease (IBD) is a chronic disorder involving mainly the intestinal tract, but possibly other gastrointestinal and extraintestinal organs. Although etiology is still uncertain, recent knowledge in pathogenesis has accumulated, and novel diagnostic and therapeutic modalities have become available for clinical use. Therefore, the previous guidelines were urged to be updated. In 2016, the Japanese Society of Gastroenterology revised the previous versions of evidence-based clinical practice guidelines for ulcerative colitis (UC) and Crohn's disease (CD) in Japanese...
February 10, 2018: Journal of Gastroenterology
Mouna Abed, Sébastien Soubies, Céline Courtillon, François-Xavier Briand, Chantal Allee, Michel Amelot, Claire De Boisseson, Pierrick Lucas, Yannick Blanchard, Ali Belahouel, Redouane Kara, Abdelhalim Essalhi, Soraya Temim, Djamel Khelef, Nicolas Eterradossi
Infectious bursal disease (IBD) is an immunosuppressive viral disease, present worldwide, which causes mortality and immunosuppression in young chickens. The causative agent, the Avibirnavirus IBDV, is a non-enveloped virus whose genome consists of two segments (A and B) of double-stranded RNA. Different pathotypes of IBDV exist, ranging from attenuated vaccine strains to very virulent viruses (vvIBDV). In Algeria, despite the prophylactic measures implemented, cases of IBD are still often diagnosed clinically and the current molecular epidemiology of IBDV remains unknown...
January 30, 2018: Infection, Genetics and Evolution
Shailja C Shah, Joren R Ten Hove, Daniel Castaneda, Carolina Palmela, Erik Mooiweer, Jean-Frédéric Colombel, Noam Harpaz, Thomas A Ullman, Ad A van Bodegraven, Jeroen M Jansen, Nofel Mahmmod, Andrea E van der Meulen-de Jong, Cyriel Y Ponsioen, Christine J van der Woude, Bas Oldenburg, Steven H Itzkowitz, Joana Torres
BACKGROUND & AIMS: Patients with inflammatory bowel disease (IBD) and primary sclerosing cholangitis (PSC, termed PSC-IBD) are at increased risk for colorectal cancer (CRC), but their risk following a diagnosis of low-grade dysplasia (LGD) is not well described. We aimed to determine the rate of advanced colorectal neoplasia (aCRN), defined as high-grade dysplasia and/or colorectal cancer, following a diagnosis of indefinite dysplasia or LGD in this population. METHODS: We performed a retrospective, longitudinal study of 1911 patients with colonic IBD (293 with PSC and 1618 without PSC) who underwent more than 2 surveillance colonoscopies from 2000 through 2015 in the Netherlands or the United States (9265 patient-years of follow up)...
January 25, 2018: Clinical Gastroenterology and Hepatology
Elena Bolzacchini, Claudio Chini, Claudio Camillo Cortelezzi, Ilaria Vallini, Graziella Pinotti, Stefano La Rosa, Silvia Uccella
A 37-year-old male with long-standing and extensive ulcerative pancolitis developed a rapidly lethal poorly differentiated neuroendocrine carcinoma (NEC) in the sigmoid colon. Prior biopsies obtained from multiple sites of the colon during endoscopic surveillance showed minimal inflammatory changes and no sign of dysplasia. Patients with inflammatory bowel disease (IBD) are at increased risk of colorectal malignancies, and adenocarcinoma is the most common type of colorectal neoplasm associated with ulcerative colitis and Crohn's disease, but other types of epithelial and nonepithelial tumors have also been described in IBD...
January 1, 2018: International Journal of Surgical Pathology
Bhavana Bhagya Rao, Bret Lashner, Kris V Kowdley
The presence of concomitant primary sclerosing cholangitis (PSC) with inflammatory bowel disease (IBD) represents a distinct disease phenotype that carries a higher risk of colorectal cancer (CRC) than the average IBD patient. Given that liver transplantation (LT) is the only treatment that offers a survival benefit in PSC patients with hepatic dysfunction, management decisions in IBD patients' post-LT for PSC are frequently encountered. One such consideration is the risk of CRC in this immunosuppressed cohort...
January 18, 2018: Inflammatory Bowel Diseases
Visvakanth Sivanathan, Gian Eugenio Tontini, Markus Möhler, Peter R Galle, Helmut Neumann
Crohn's disease and ulcerative colitis are chronic inflammatory bowel diseases (IBD) causing severe damage of the luminal gastrointestinal tract. Differential diagnosis between both disease entities is sometimes awkward requiring a multifactorial pathway, including clinical and laboratory data, radiological findings, histopathology and endoscopy. Apart from disease diagnosis, endoscopy in IBD plays a major role for prediction of disease severity and extent (i.e. mucosal healing) for tailored patient management and for screening of colitis associated cancer and its precursor lesions...
January 23, 2018: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
Mikihiro Fujiya
Inflammatory bowel disease (IBD) is a major risk factor for colorectal cancer. Surveillance colonoscopy is presumably important for the early detection of colitis-associated cancer/dysplasia (CC/Ds). However, it is not easy to detect certain lesions in the inflamed mucosa using white-light endoscopy (WLE), even during the remission phase. Therefore, WLE with random biopsies has been the traditional approach for dysplasia detection. Recent advances in endoscopic technologies, including high-definition endoscopy and image-enhanced endoscopy, have improved the visibility of dysplastic lesions, suggesting that novel endoscopic procedures with a target biopsy are suitable for the surveillance of CC/Ds[1]...
January 23, 2018: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
Betuel Sigaúque, Miwako Kobayashi, Delfino Vubil, Ariel Nhacolo, Alberto Chaúque, Benild Moaine, Sérgio Massora, Inácio Mandomando, Tacilta Nhampossa, Quique Bassat, Fabiana Pimenta, Clara Menéndez, Maria da Gloria Carvalho, Eusebio Macete, Stephanie J Schrag
BACKGROUND: Maternal group B streptococcal (GBS) vaccines under development hold promise to prevent GBS disease in young infants. Sub-Saharan Africa has the highest estimated disease burden, although data on incidence and circulating strains are limited. We described invasive bacterial disease (IBD) trends among infants <90 days in rural Mozambique during 2001-2015, with a focus on GBS epidemiology and strain characteristics. METHODS: Community-level birth and mortality data were obtained from Manhiça's demographic surveillance system...
2018: PloS One
Lapo Mughini-Gras, Michael Schaapveld, Jolanda Kramers, Sofie Mooij, E Andra Neefjes-Borst, Wilfrid van Pelt, Jacques Neefjes
BACKGROUND: Colon cancer constitutes one of the most frequent malignancies. Previous studies showed that Salmonella manipulates host cell signaling pathways and that Salmonella Typhimurium infection facilitates colon cancer development in genetically predisposed mice. This epidemiological study examined whether severe Salmonella infection, usually acquired from contaminated food, is associated with increased colon cancer risk in humans. METHODS AND FINDINGS: We performed a nationwide registry-based study to assess colon cancer risk after diagnosed Salmonella infection...
2018: PloS One
Pasquale Klepp, John B Kisiel, Milada Cvancarova Småstuen, Arne Røseth, Solveig N Andersen, Morten H Vatn, David A Ahlquist, Bjørn A Moum, Stephan Brackmann
BACKGROUND AND AIM: Colonoscopic surveillance is recommended in patients with longstanding inflammatory bowel disease (IBD) as they are at increased risk of colorectal cancer (CRC). Non-invasive surveillance may improve compliance and access. Multi-target stool DNA (MT-sDNA) has been validated for screening of sporadic CRC but has not been assessed in IBD. Our aim was to assess the performance of a MT-sDNA test in a real-life surveillance setting of patients with longstanding IBD. MATERIAL AND METHODS: A total of 192 IBD patients enrolled from two prospective cohorts submitted an EDTA buffered stool sample and underwent chromo- or white light colonoscopy...
January 9, 2018: Scandinavian Journal of Gastroenterology
Ian A Dwight, Peter S Coates, Simone T Stoute, C Gabriel Senties-Cue, Radhika V Gharpure, Maurice E Pitesky
We investigated exposure to infectious diseases in wild ( n=33) and pen-reared ( n=12) Ring-necked Pheasants ( Phasianus colchicus) in the Central Valley of California during 2014 and 2015. Serologic tests were positive for antibodies against hemorrhagic enteritis (HE), infectious bursal disease (IBD), and Newcastle disease (ND) viruses in both wild and pen-reared pheasants.
December 20, 2017: Journal of Wildlife Diseases
Alexandra Medellin, Christina Merrill, Stephanie R Wilson
Contrast-enhanced ultrasound (CEUS) of the gastrointestinal tract provides vascular information helpful for characterizing masses and other pathologies in and around the bowel, similar to contrast applications in other solid organs. However, the use of microbubble contrast agents for the bowel provides additional unique contributions as it gives both subjective and objective information about mural and mesenteric blood flow, invaluable for the determination of disease activity in those many patients affected by inflammatory bowel disease (IBD)...
December 19, 2017: Abdominal Radiology
Madeleine D Hu, Karen L Edelblum
Purpose of review: Intestinal mucosal immunity is tightly regulated to ensure effective host defense against invasive microorganisms while limiting the potential for aberrant damage. In inflammatory bowel disease (IBD), an imbalance between effector and regulatory T cell populations results in an uncontrolled inflammatory response to commensal bacteria. Intraepithelial lymphocytes (IEL) are perfectly positioned within the intestinal epithelium to provide the first line of mucosal defense against luminal microbes or rapidly respond to epithelial injury...
December 2017: Current Pharmacology Reports
James W T Toh, Nelson Wang, Christopher J Young, Matthew J F X Rickard, Anil Keshava, Peter Stewart, Viraj Kariyawasam, Rupert Leong
BACKGROUND: Most patients with Crohn's disease still require surgery despite significant advances in medical therapy, surveillance, and management strategies. OBJECTIVE: The purpose of this study was to assess surgical strategies and outcomes in Crohn's disease, including surgical recurrence and emergency surgery. DESIGN: This was a multicenter, retrospective review of a prospectively collected database. SETTINGS: A specialist-referred cohort of patients with Crohn's disease between 1970 and 2009 was studied...
January 2018: Diseases of the Colon and Rectum
Nabeel Khan, Carlos Vallarino, Trevor Lissoos, Umar Darr, Michelle Luo
BACKGROUND: Management of elderly inflammatory bowel disease (IBD) patients (≥ 65 years of age) is complicated due to many factors, including a higher risk of cancer, which may impact therapeutic decisions. OBJECTIVE: The aim of this study was to determine the risk of cancer among elderly IBD patients compared with younger IBD patients. Additionally, the absolute risk of malignancy and factors contributing to it were evaluated, and therapeutic patterns among the elderly were assessed...
November 2017: Drugs & Aging
Marietta Iacucci, Gilaad G Kaplan, Remo Panaccione, Oluseyi Akinola, Brendan Cord Lethebe, Mark Lowerison, Yvette Leung, Kerri L Novak, Cynthia H Seow, Stefan Urbanski, Parham Minoo, Xianyong Gui, Subrata Ghosh
OBJECTIVES: Dye spraying chromoendoscopy (DCE) is recommended for the detection of colonic neoplastic lesions in inflammatory bowel disease (IBD). The majority of neoplastic lesions are visible endoscopically and therefore targeted biopsies are appropriate for surveillance colonoscopy. To compare three different techniques for surveillance colonoscopy to detect colonic neoplastic lesions in IBD patients: high definition (HD), (DCE), or virtual chromoendoscopy (VCE) using iSCAN image enhanced colonoscopy...
November 14, 2017: American Journal of Gastroenterology
Aimee R Taylor, Stephen F Schaffner, Gustavo C Cerqueira, Standwell C Nkhoma, Timothy J C Anderson, Kanlaya Sriprawat, Aung Pyae Phyo, François Nosten, Daniel E Neafsey, Caroline O Buckee
With the rapidly increasing abundance and accessibility of genomic data, there is a growing interest in using population genetic approaches to characterize fine-scale dispersal of organisms, providing insight into biological processes across a broad range of fields including ecology, evolution and epidemiology. For sexually recombining haploid organisms such as the human malaria parasite P. falciparum, however, there have been no systematic assessments of the type of data and methods required to resolve fine scale connectivity...
October 2017: PLoS Genetics
Se-Jin Baek, Seon-Hahn Kim
Colitis-associated colorectal cancer (CACRC) is a major concern in patients with long-standing inflammatory bowel disease (IBD). CACRC can develop under the influence of several risk factors including longer duration and disease extent and shows clinical and molecular features different from those of sporadic CRC. Several academic societies have recommended surveillance guidelines for CACRC that develops in IBD patients. Patients are stratified according to risk for CRC and differentiated by surveillance colonoscopy and management...
December 2017: Minerva Chirurgica
Jesús Castro, Miriam Cuatrecasas, Francesc Balaguer, Elena Ricart, María Pellisé
Inflammatory bowel disease (IBD) patients are at an increased risk of developing colorectal cancer (CRC), which is thought to develop via the adenoma-carcinoma pathway. Since the discovery of the serrated carcinogenesis pathway and serrated polyposis syndrome (SPS), the incidence of carcinomas arising from serrated lesions in IBD patients has increased. We report three cases of long-standing IBD patients with associated serrated polyposis syndrome. At present, the pathophysiology of serrated lesions in IBD patients is not fully understood and there is a lack of strong evidence to confirm whether the manifestation of both conditions represents an increased risk of developing cancer...
November 2017: Revista Española de Enfermedades Digestivas
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