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https://www.readbyqxmd.com/read/28333358/cancer-risk-in-the-early-stages-of-inflammatory-bowel-disease-in-korean-patients-a-nationwide-population-based-study
#1
Yoon Suk Jung, Minkyung Han, Won Ho Kim, Sohee Park, Jae Hee Cheon
Background and Aims: The association between inflammatory bowel disease (IBD) and cancer remains poorly defined in Asian populations. Therefore, we conducted a nationwide population-based study to determine the cancer risk in Korean patients with IBD. Methods: Using the National Health Insurance claims data, we collected data on patients diagnosed with IBD (5,595 Crohn's disease [CD] and 10,049 ulcerative colitis [UC]) from 2011 to 2014. Standardized incidence ratios (SIRs) of overall and site-specific cancers in IBD patients in comparison with the general population were calculated...
March 16, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28327112/prognosis-of-ulcerative-colitis-colorectal-cancer-vs-sporadic-colorectal-cancer-propensity-score-matching-analysis
#2
Yoon Dae Han, Mahdi Hussain Al Bandar, Audrius Dulskas, Min Soo Cho, Hyuk Hur, Byung Soh Min, Kang Young Lee, Nam Kyu Kim
BACKGROUND: Ulcerative colitis (UC) harbours a high risk of UC-associated colorectal cancer (UCCC), which is important cause of morbidity and mortality in patients with inflammatory bowel disease. Overall Survival (OS) of patients with UCCC has not been addressed well in the literature. Thus, we compared oncologic outcome of UCCC and sporadic colorectal cancer (SCC) using propensity score matching analysis. METHODS: Propensity score matching was performed for 36 patients, a 1:1 matching method stratified into 18 in UCCC and 18 patients in SCC...
March 21, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28321155/pseudopolyps-in-inflammatory-bowel-diseases-have-we-learned-enough
#3
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/28318706/special-situations-in-inflammatory-bowel-disease-first-latin-american-consensus-of-the-pan-american-crohn-s-and-colitis-organisation-pancco
#4
J K Yamamoto-Furusho, F Bosques-Padilla, P Daffra, J De-Paula, J Etchevers, M T Galiano, P Ibañez, F Juliao, P Kotze, J M Marroquín de la Garza, R Monreal Robles, J L Rocha, F Steinwurz, R Vázquez-Frías, G Veitia, C Zaltman
This is the first Latin American Consensus of the Pan American Crohn's and Colitis Organisation (PANCCO) regarding special situations in patients with inflammatory bowel disease (IBD). The aim of this consensus is to raise awareness in the medical community in all Latin American countries with respect to pregnancy, vaccinations, infections, neoplasms, including colorectal cancer, and pediatric issues in patients with IBD.
March 16, 2017: Revista de Gastroenterología de México
https://www.readbyqxmd.com/read/28301579/a-novel-model-of-colitis-associated-cancer-in-samp1-yitfc-mice-with-crohn-s-disease-like-ileitis
#5
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/28283691/-modulation-of-the-intestinal-microbiota-by-nutritional-interventions
#6
S Derer, H Lehnert, C Sina, A E Wagner
Humans live in symbiosis with billions of commensal bacteria. The so-called microbiota live on different biological interfaces such as the skin, the urogenital tract and the gastrointestinal tract. Commensal bacteria replace potentially pathogenic microbes, synthesize vitamins and ferment dietary fibre. An imbalance in the bacterial composition of the intestinal microbiota has been associated with various diseases including gut-associated disorders such as inflammatory bowel diseases, colorectal cancer and nonalcoholic fatty liver disease...
March 10, 2017: Der Internist
https://www.readbyqxmd.com/read/28278072/chronic-inflammation-confers-to-the-metabolic-reprogramming-associated-with-tumorigenesis-of-colorectal-cancer
#7
Dingding Qu, Liangliang Shen, Shaoqing Liu, Huichen Li, Yongzheng Ma, Ruohan Zhang, Kaichun Wu, Libo Yao, Jipeng Li, Jian Zhang
It's well known that microenvironment inflammatory signals could promote cancer development and progression. In colorectal cancer (CRC), chronic inflammation is a major driving mechanism for the development of CRC in patients having long-standing inflammatory bowel disease (IBD). Though it has been addressed that cancer cells ferment much of their glucose supply into lactate regardless of the presence of oxygen, it is unclear whether cell metabolism has been reprogramed during the process from IBD to CRC. Herein, with dextran sulfate sodium (DSS)-induced mouse colitis model, we found that inflammation upregulated key glycolytic enzymes expression via activation of STAT3/c-Myc signaling pathway...
February 25, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28263971/egfr-mediated-macrophage-activation-promotes-colitis-associated-tumorigenesis
#8
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
#9
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...
March 6, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28257448/monoclonal-antibodies-specific-for-bacteroides-fragilis-enterotoxins-bft1-and-bft2-and-their-use-in-immunoassays
#10
Saraspadee Mootien, Paul M Kaplan
We have developed 22 mouse IgG1 monoclonal antibodies (mAbs) against Bacteroides fragilis zinc metalloprotease toxins 1 and 2 (BFT1 and BFT2). Mice were immunized with recombinant BFT1 or BFT2 proteins with metalloprotease activity. Eight of the mAbs bind specifically to BFT1. One mAb, 2H6, binds specifically to BFT2. The remaining 13 mAbs bind to both BFT1 and BFT2. The eight BFT1-specific mAbs recognize at least five different epitopes on the toxin. Four of the BFT1-specific mAbs neutralized rBFT1 metalloprotease activity...
2017: PloS One
https://www.readbyqxmd.com/read/28252278/bifunctional-succinylated-%C3%AE%C2%B5-polylysine-coated-mesoporous-silica-nanoparticles-for-ph-responsive-and-intracellular-drug-delivery-targeting-the-colon
#11
Chau T H Nguyen, Richard I Webb, Lynette K Lambert, Ekaterina Strounina, Edward C Lee, Marie-Odile Parat, Michael A McGuckin, Amirali Popat, Peter J Cabot, Benjamin P Ross
Conventional oral drug formulations for colonic diseases require the administration of high doses of drug to achieve effective drug concentrations at the target site. However, this exposes patients to serious systemic toxicity in order to achieve efficacy. To overcome this problem, an oral drug delivery system was developed by loading a large amount (ca. 34% w/w) of prednisolone into 3-aminopropyl-functionalized mesoporous silica nanoparticles (MCM-NH2) and targeting prednisolone release to the colon by coating the nanoparticle with succinylated ε-polylysine (SPL)...
March 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28243990/associations-between-single-nucleotide-polymorphisms-and-inflammatory-bowel-disease-associated-colorectal-cancers-in-inflammatory-bowel-disease-patients-a-meta-analysis
#12
REVIEW
H Li, Z Jin, X Li, L Wu, J Jin
PURPOSE: To assess the correlation between single-nucleotide polymorphisms (SNPs) and inflammatory bowel disease (IBD)-associated colorectal cancer (CRC) in IBD patients. METHODS: A systematic search of PubMed, EmBase, and Cochrane databases was performed. Five genetic models (allelic, dominant, recessive, heterozygous and homozygous models) were used to analyze the associations, and trial sequential analysis was used to analyze the robustness of the results. RESULTS: We collected and analyzed the results of seven trials including a total of 2287 patients in our meta-analysis...
February 27, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28242162/molecular-screening-for-lynch-syndrome-in-young-patients-with-colorectal-adenomas
#13
Robin B Mendelsohn, Keri Herzog, Jinru Shia, Nadiyah Rahaman, Zsofia K Stadler, Moshe Shike
BACKGROUND: The frequency of mismatch repair (MMR) deficiency (dMMR) in patients < 50 years with adenomas without a known germline mutation is unknown. Our aim was to define the frequency of dMMRs in adenomas from patients aged < 50 years. PATIENTS AND METHODS: We identified all patients aged 18 to 49 years who had undergone colonoscopy at Memorial Sloan Kettering Cancer Center from 2008 to 2013 and were identified as having tubular, villous, or tubulovillous adenomas on pathology...
February 2, 2017: Clinical Colorectal Cancer
https://www.readbyqxmd.com/read/28207290/fatty-acid-and-mineral-receptors-as-drug-targets-for-gastrointestinal-disorders
#14
Pawin Pongkorpsakol, Aekkacha Moonwiriyakit, Chatchai Muanprasat
Nutrient-sensing receptors, including fatty acid receptors (FFA1-FFA4), Ca(2+)-sensing receptors and Zn(2+)-sensing receptors, are involved in several biological processes. These receptors are abundantly expressed in the GI tract, where they have been shown to play crucial roles in regulating GI function. This review provides an overview of the GI functions of fatty acid and mineral receptors, including the regulation of gastric and enteroendocrine functions, GI motility, ion transport and cell growth. Recently, several lines of evidence have implicated these receptors as promising therapeutic targets for the treatment of GI disorders, for example, inflammatory bowel disease, colorectal cancer, metabolic syndrome and diarrheal diseases...
February 16, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28193514/microrna-301a-promotes-intestinal-inflammation-and-colitis-associated-cancer-development-by-inhibiting-btg1
#15
Chong He, Tianming Yu, Yan Shi, Caiyun Ma, Wenjing Yang, Leilei Fang, Mingming Sun, Wei Wu, Fei Xiao, Feifan Guo, Minhu Chen, Hong Yang, Jiaming Qian, Yingzi Cong, Zhanju Liu
BACKGROUND & AIMS: Intestinal tissues from patients with inflammatory bowel disease (IBD) and colorectal cancer have increased expression of microRNA-301a (MIR301A), compared to tissues from patients without IBD. We studied the mechanisms of MIR301A in progression of IBD in human tissues and mice. METHODS: We isolated intestinal epithelial cells (IECs) from colon biopsy samples of 153 patients with different stages of IBD activity, 6 patients with colitis-associated cancer (CAC), and 35 healthy individuals (controls), enrolled in the study in Shanghai, China...
February 10, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28175230/p709-inflammatory-bowel-disease-and-colorectal-cancer-analysis-of-a-single-center-retrospective-chart-review
#16
M Fragaki, M Bachlitzanaki, K Karmiris, A Theodoropoulou, E Vardas, G Paspatis
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28172746/dop065-use-of-chromoendoscopy-versus-white-light-endoscopy-for-colorectal-cancer-surveillance-in%C3%A2-inflammatory-bowel-disease-patients-with-primary-sclerosing-cholangitis-a-six-year-experience
#17
K Hartery, K Williamson, R Chapman, N Atkinson, J East
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28165825/chemoprevention-of-colorectal-cancer-in-ulcerative-colitis-digging-deep-in-current-evidence
#18
Cristina Bezzio, Stefano Festa, Simone Saibeni, Claudio Papi
Patients with ulcerative colitis (UC) have an increased risk of developing colorectal cancer (CRC). Surveillance colonoscopy is currently recommended for patients with long-standing extensive colitis for reducing CRC risk. Chemoprevention is an attractive complementary strategy. Areas covered: Inflammation is a major determinant of CRC risk and is potentially modifiable. Reducing inflammation is supposed to reduce CRC risk. Several medications have been evaluated in this setting: 5-ASA, thiopurines, anti-TNFα agents and ursodeoxycholic acid (UCDA) in patients with associated primary sclerosing cholangitis (PSC)...
April 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28160571/the-oncoprotein-gankyrin-promotes-the-development-of-colitis-associated-cancer-through-activation-of-stat3
#19
Toshiharu Sakurai, Hiroaki Higashitsuji, Hiroshi Kashida, Tomohiro Watanabe, Yoriaki Komeda, Tomoyuki Nagai, Satoru Hagiwara, Masayuki Kitano, Naoshi Nishida, Takaya Abe, Hiroshi Kiyonari, Katsuhiko Itoh, Jun Fujita, Masatoshi Kudo
Although long-standing colonic inflammation due to refractory inflammatory bowel disease (IBD) promotes the development of colitis-associated cancer (CAC), the molecular mechanisms accounting for the development of CAC remains largely unknown. In this study, we investigated the role of gankyrin in the development of CAC since gankyrin is overexpressed in sporadic colorectal cancers. We analyzed gene expression of colon tissues obtained from 344 patients with IBD and CAC and found that expression of gankyrin was much higher in colonic mucosa of patients with refractory IBD than in those with IBD in remission...
February 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28155620/nlrp3-inhibitors-as-potential-therapeutic-agents-for-treatment-of-inflammatory-bowel-disease
#20
Agampodi Promoda Perera, Dale Kunde, Rajaraman Eri
BACKGROUND: Inflammatory bowel disease (IBD) is a group of intestinal disorders characterised by chronic relapsing inflammation of the small intestine and colon. IBD manifests as either ulcerative colitis or Crohn's disease and increases the risk of developing colorectal cancer. METHODS: Here, we have reviewed current treatment regimen for IBD utilising anti-inflammatory drugs, immune system suppressors and antibiotics or a combination of these. However, these therapeutics lead to a number of adverse effects, remission or significant non-responsiveness creating an urgent need to develop potent drugs with novel mechanisms of action for IBD...
February 1, 2017: Current Pharmaceutical Design
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