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https://www.readbyqxmd.com/read/29689573/systematic-review-and-meta-analysis-of-the-effectiveness-of-radiofrequency-ablation-in-low-grade-dysplastic-barrett-s-esophagus
#1
Gargi Pandey, Mubashir Mulla, Wyn G Lewis, Antonio Foliaki, David S Y Chan
BACKGROUND:  Barrett's esophagus (BE) is a premalignant condition characterized by replacement of the esophageal lining with metastatic columnar epithelium, and its management when complicated by low grade dysplasia (LGD) is controversial. This systematic review and meta-analysis aimed to determine the efficacy of radiofrequency ablation (RFA) in patients with LGD. METHODS:  MEDLINE, EMBASE, and Web of Science were searched for studies including patients with BE-associated LGD receiving RFA (January 1990 to May 2017)...
April 24, 2018: Endoscopy
https://www.readbyqxmd.com/read/29688249/prolyl-hydroxylase-2-is-dispensable-for-homeostasis-of-intestinal-epithelium-in-mice
#2
Yinghui Xie, Tanglong Yuan, Yanqing Qin, Zhonghui Weng, Jing Fang
Prolyl hydroxylases (PHD1-3) hydroxylate hypoxia inducible factor α (HIFα), leading to HIFα ubiquitination and degradation. Recent studies indicated that administration of generic inhibitors of PHDs improved mice colitis, suggesting that suppression of PHD activity by these inhibitors may be a potential strategy for the treatment of inflammatory bowel diseases. However, the exact role of each member of PHD family in homeostasis of intestinal epithelium remains elusive. The aim of this work is to study the possible role of PHD2 by using mice with genetic ablation of Phd2 in intestinal epithelial cells (IECs)...
April 23, 2018: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29686976/microsatellite-instability-in-mouse-models-of-colorectal-cancer
#3
Nicola Currey, Joseph J Daniel, Dessislava N Mladenova, Jane E Dahlstrom, Maija R J Kohonen-Corish
Microsatellite instability (MSI) is caused by DNA mismatch repair deficiency and is an important prognostic and predictive biomarker in colorectal cancer but relatively few studies have exploited mouse models in the study of its clinical utility. Furthermore, most previous studies have looked at MSI in the small intestine rather than the colon of mismatch repair deficient Msh2 -knockout (KO) mice. Here we compared Msh2 -KO, p53 -KO, and wild type (WT) mice that were treated with the carcinogen azoxymethane (AOM) and the nonsteroidal anti-inflammatory drug sulindac or received no treatment...
2018: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29682719/-evolution-and-prospect-of-colorectal-anastomosis
#4
Qi Liu, Xinxiang Li
Colorectal cancer is the third most common malignant tumor among men, and the second most common malignant tumor among women worldwide. As one of the most common malignant tumor, colorectal cancer has a great threat to the health of people. Although the development of radiotherapy and chemotherapy could improve the prognosis of colorectal cancer, surgery, the complete resection of the tumor, remains the only chance for the cure of this disease. Over the past hundred years, surgical oncology went in the direction of protecting organ function and improving quality of life...
2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29682712/-incidence-and-risk-factors-for-anastomotic-leakage-after-anterior-resection-for-rectal-cancer
#5
Jun Li, Yongbo An, Guocong Wu, Xiaomu Zhao, Yingchi Yang, Jin Wang, Lan Jin, Hongwei Wu, Na Zeng, Fuxiao Xie, Jie Dong, Anlong Yuan, Wuqing Sun, Ruiqing Zhou, Hongwei Yao, Zhongtao Zhang
OBJECTIVE: To assess the incidence and independent risk factors for clinical anastomotic leakage (AL) in patients undergoing anterior resection(AR) or low anterior resection, (LAR) for rectal cancer. METHODS: This was a retrospective case-control study of 550 patients with rectal cancer who underwent AR or LAR from April 2007 to March 2017 in Beijing Friendship Hospital, Capital Medical University. The relationship between the incidence of AL and clinicopathological manifestations was analyzed by Chi-squared test and Fisher exact test, and the independent risk factors of AL were analyzed using logistic regression analysis...
2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29682711/-imaging-diagnosis-and-imaging-risk-factors-of-anastomotic-leakage-after-rectal-cancer-surgery
#6
Yi Wang
Dispite continual improvements in diagnostic and management techniques, anastomotic leak (AL) remains one of the most devastating consequences of rectal cancer surgery. Recently, many investigations have attempted to identify the risk factors and established risk model to predict and prevent anastomotic leakage after low anterior resection. The distance between the lower edge of rectal cancer and the anal verge measured by magnetic resonance imaging was demonstrated as one of the independent risk factors associated with AL...
2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29682709/-prevention-of-anastomotic-leakage-after-robotic-surgery-for-rectal-cancer
#7
Xiaohui Du, Xiaowei Xing
With popularity of robotic surgery system, robotic rectal cancer surgery is increasing. Precautionary measures of different perioperative periods should be taken to reduce the risk for anastomotic leakage. First, the general condition of patients should be acquainted and improved, and the risk for anastomotic leakage should be evaluated preoperatively. Preoperative neoadjuvant chemoradiotherapy may not increase the risk for anastomotic leakage after rectal surgery. The impact of routine bowel preparation to prevent anastomotic leakage needs to be verified further...
2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29682676/how-human-microbiome-talks-to-health-and-disease
#8
REVIEW
Jing Cong, Xiaochun Zhang
Microbes are ubiquitous in the human body. They usually live in communities, and each of these communities has a distinct taxonomical structure. Due to its close relationship with human health and disease, the human microbiome has received great attention and is probably considered to be the most valuable biomarker in preventing and solving human diseases. In this paper, we first review the value of the human microbiome. Then, we focus on the role of the human microbiome in influencing human health and disease...
April 22, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29681865/quercetin-increases-muc2-and-muc5ac-gene-expression-and-secretion-in-intestinal-goblet-cell-like-ls174t-via-plc-pkc%C3%AE-erk1-2-pathway
#9
Simona Damiano, Anna Sasso, Bruna De Felice, Ilaria Di Gregorio, Giuliana La Rosa, Gelsi A Lupoli, Anna Belfiore, Paolo Mondola, Mariarosaria Santillo
The main dietary flavonoid quercetin, is known to preserve the integrity of gastrointestinal barrier and to have anti-inflammatory, anti-cancer, anti-fibrotic, and other beneficial properties. Many of the biological effects of quercetin appear to be associated to the modulation of cell signaling pathways, rather than to its antioxidant activity. In spite of the large number of data available on the molecular and cellular mechanisms by which quercetin exerts its biological effects, including protection of intestinal barrier function, there is a lack of data about the role of this substance on the expression and/or the secretion of mucins released by intestinal goblet cells...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29675664/how-should-we-report-endoscopic-results-in-patient-s-with-barrett-s-esophagus
#10
REVIEW
Venkata Subhash Gorrepati, Prateek Sharma
Barrett's esophagus is the only known pre-cancerous lesion for esophageal adenocarcinoma and is diagnosed by high-definition white light endoscopy demonstrating a columnar-lined esophagus along with biopsy evidence of intestinal metaplasia. With accurate performance and reporting of the endoscopic procedure, an evidence-based management strategy can be developed for treatment of Barrett's dysplasia. However, cross-sectional data demonstrate that there is still inconsistency among gastroenterologists in performance and reporting of endoscopic findings in patients with Barrett's esophagus...
April 19, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29675592/late-assessment-of-quality-of-life-in-patients-with-rectal-carcinoma-comparison-between-sphincter-preservation-and-definitive-colostomy
#11
Mariane Messias Reis Lima Silva, Samuel Aguiar Junior, Juliana de Aguiar Pastore, Érica Maria Monteiro Santos, Fábio de Oliveira Ferreira, Ranyell Matheus S B Spencer, Vinicius F Calsavara, Wilson Toshihiko Nakagawa, Ademar Lopes
PURPOSE: Patients with cancer of the lower and middle rectum who are candidates for curative surgery often have negative opinions on definitive colostomy. The purpose of this study is to compare the quality of life (QoL) of patients who undergo standard treatment for rectal cancer with sphincter preservation or definitive colostomy. METHODS: A total of 125 patients with adenocarcinoma of the lower or middle rectum who underwent radical surgery with curative intent with a follow-up ≥ 1 year were recruited: 83 patients (group 1) were subjected to low anterior resection and low colorectal or coloanal anastomosis-thus preserving their sphincter-and 42 (group 2) were treated with abdominoperineal resection, followed by terminal definitive colostomy...
April 19, 2018: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29672847/loss-of-n-wasp-drives-early-progression-in-an-apc-model-of-intestinal-tumourigenesis
#12
Hayley T Morris, Loic Fort, Heather J Spence, Rachana Patel, David F Vincent, James H Park, Scott B Snapper, Francis A Carey, Owen J Sansom, Laura M Machesky
N-WASP (WASL) is a widely expressed cytoskeletal signalling and scaffold protein also implicated in regulation of Wnt signalling and homeostatic maintenance of skin epithelial architecture. N-WASP mediates invasion of cancer cells in vitro and its depletion reduces invasion and metastatic dissemination of breast cancer. Given this role in cancer invasion and universal expression in the gastrointestinal tract, we explored a role for N-WASP in the initiation and progression of colorectal cancer. While deletion of N-wasp is not detectably harmful in the murine intestinal tract, numbers of Paneth cells increased, indicating potential changes in the stem cell niche and migration up the crypt-villus axis was enhanced...
April 19, 2018: Journal of Pathology
https://www.readbyqxmd.com/read/29671160/cardiac-metaplasia-follow-treat-or-ignore
#13
REVIEW
Stuart J Spechler
Over the past two decades, evidence has accumulated to challenge the traditional view that cardiac mucosa, which is comprised exclusively of mucus glands, is the normal lining of the most proximal portion of the stomach (the gastric cardia). There is now considerable evidence to suggest that cardiac mucosa develops as a GERD-induced, squamous-to-columnar esophageal metaplasia in some, if not all, cases. Although cardiac mucosa lacks the goblet cells commonly required for a histologic diagnosis of intestinal metaplasia, cardiac mucosa has many molecular features of an intestinal-type mucosa, and appears to be the precursor of intestinal metaplasia with goblet cells...
April 18, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29670108/down-regulation-of-a-pro-apoptotic-pathway-regulated-by-pcaf-ada3-in-early-stage-gastric-cancer
#14
Daniella Brasacchio, Rita A Busuttil, Tahereh Noori, Ricky W Johnstone, Alex Boussioutas, Joseph A Trapani
The loss of p300/CBP-associated protein (PCAF) expression is associated with poor clinical outcome in gastric cancer, and a potential bio-marker for invasive and aggressive tumors. However, the mechanism linking loss of PCAF to the onset of gastric cancer has not been identified. Given that PCAF and its binding partner transcriptional adaptor protein 3 (ADA3) were recently shown to regulate the intrinsic (mitochondrial) pathway to apoptosis via epigenetic regulation of phosphofurin acidic cluster sorting proteins 1 and 2 (PACS1, PACS2), we analyzed PCAF, ADA3, and PACS1/2 expression in 99 patient-matched surgical samples ranging from normal gastric mucosa, through pre-malignant chronic gastritis and intestinal metaplasia to stage I-III invasive cancers...
April 18, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29669932/nardilysin-controls-intestinal-tumorigenesis-through-hdac1-p53-dependent-transcriptional-regulation
#15
Keitaro Kanda, Jiro Sakamoto, Yoshihide Matsumoto, Kozo Ikuta, Norihiro Goto, Yusuke Morita, Mikiko Ohno, Kiyoto Nishi, Koji Eto, Yuto Kimura, Yuki Nakanishi, Kanako Ikegami, Takaaki Yoshikawa, Akihisa Fukuda, Kenji Kawada, Yoshiharu Sakai, Akihiro Ito, Minoru Yoshida, Takeshi Kimura, Tsutomu Chiba, Eiichiro Nishi, Hiroshi Seno
Colon cancer is a complex disease affected by a combination of genetic and epigenetic factors. Here we demonstrate that nardilysin (N-arginine dibasic convertase; NRDC), a metalloendopeptidase of the M16 family, regulates intestinal tumorigenesis via its nuclear functions. NRDC is highly expressed in human colorectal cancers. Deletion of the Nrdc gene in ApcMin mice crucially suppressed intestinal tumor development. In ApcMin mice, epithelial cell-specific deletion of Nrdc recapitulated the tumor suppression observed in Nrdc-null mice...
April 19, 2018: JCI Insight
https://www.readbyqxmd.com/read/29668771/ivth-brazilian-consensus-conference-on-helicobacter-pylori-infection
#16
Luiz Gonzaga Vaz Coelho, James Ramalho Marinho, Robert Genta, Laercio Tenório Ribeiro, Maria do Carmo Friche Passos, Schlioma Zaterka, Paulo Pimentel Assumpção, Alfredo José A Barbosa, Ricardo Barbuti, Lucia Libanês Braga, Helenice Breyer, Aloisio Carvalhaes, Décio Chinzon, Marcelo Cury, Gerson Domingues, Jorge Luiz Jorge, Ismael Maguilnik, Frederico Passos Marinho, Joaquim Prado de Moraes-Filho
Significant progress has been obtained since the III Brazilian Consensus Conference on H. pylori infection held in 2012, in Bento Gonçalves, Brazil, and justify a fourth meeting to establish updated guidelines on the current management of H. pylori infection. Therefore, the Núcleo Brasileiro para Estudo do Helicobacter pylori e Microbiota (NBEHPM), association linked to Brazilian Federation of Gastroenterology (FBG) held its fourth meeting again in Bento Gonçalves, RS, Brazil, on August 25-27, 2017. Twenty-six delegates, including gastroenterologists, endoscopists, and pathologists from the five regions of Brazil as well as one international guest from the United States, participated in the meeting...
April 16, 2018: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/29668030/uv-c-irradiation-on-the-quality-of-green-tea-effect-on-catechins-antioxidant-activity-and-cytotoxicity
#17
Matthew J Vergne, Ankit Patras, Manreet S Bhullar, Lincoln M Shade, Michael Sasges, Kanyasiri Rakariyatham, Che Pan, Hang Xiao
Short-wavelength ultraviolet (UV-C) irradiation is a nonthermal processing technique that is a possible alternative to the heat-pasteurization of tea beverages. This study investigated the effect of UV-C irradiation on the polyphenolic and total phenolic contents of a green tea beverage and analyzed cytotoxicity of irradiated green tea using a novel continuous flow-through UV system. UV-C fluence levels ranging from 0 to 240 mJ/cm2 were delivered to green tea, and polyphenols were chemically profiled. Continuous-flow UV-C irradiation of the green tea beverage at a fluence of 68 mJ/cm2  induced a minor reduction in the concentration of the most abundant catechin in green tea, (-)-epigallocatechin gallate (EGCG), from 145 to 131...
April 18, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29666615/significance-of-streptococcus-gallolyticus-subsp-gallolyticus-association-with-colorectal-cancer
#18
REVIEW
Ewa Pasquereau-Kotula, Mariana Martins, Laetitia Aymeric, Shaynoor Dramsi
Streptococcus gallolyticus subsp. gallolyticus Sgg (formerly known as S. bovis type I) is the main causative agent of septicemia and infective endocarditis (IE) in elderly and immunocompromised persons. It belongs to the few opportunistic bacteria, which have been strongly associated to colorectal cancer (CRC). A literature survey covering a period of 40 years (1970-2010) revealed that 65% of patients diagnosed with an invasive Sgg infection had a concomitant colorectal neoplasia. Sgg is associated mainly with early adenomas and may thus constitute an early marker for CRC screening...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29666402/expression-of-kk-lc-1-a-cancer-testis-antigen-at-non-tumour-sites-of-the-stomach-carrying-a-tumour
#19
Takashi Fukuyama, Nobue Futawatari, Rui Yamamura, Taiga Yamazaki, Yoshinobu Ichiki, Akira Ema, Hideki Ushiku, Yatsushi Nishi, Yoshihito Takahashi, Toshikazu Otsuka, Hitoshi Yamazaki, Wasaburo Koizumi, Kosei Yasumoto, Noritada Kobayashi
Kita-Kyushu lung cancer antigen-1 (KK-LC-1) is a cancer/testis antigen (CTA) and predominant target for cancer immunotherapy. Our previous study indicated that KK-LC-1 was expressed in 82% of gastric cancers, and also in 79% of early stage of gastric cancers, with a correlation to Helicobacter pylori (H. pylori) infection. In addition, we found that KK-LC-1 was occasionally expressed at non-tumour sites of stomachs carrying tumours. Here, we investigated the characteristics of KK-LC-1 expression at non-tumour sites and the clinical utility of these phenomena...
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29666094/telescoping-jejunum-a-case-of-adult-intussusception
#20
Saad Ikram, Sobhana Tani, Geeta Kaur, Makani Hemadri
Intussusception is the invagination of a proximal part of intestine into the adjacent distal part. Reported frequently in children, it forms a rare presentation in adults and can be difficult to diagnose pre operatively. Imaging modalities are increasingly being used for preoperative diagnosis with almost all cases in adults being secondary to an intestinal lesion. Intraoperative management of such lesions in adults was mostly reported to be done by en bloc resection without attempts at reduction, especially where a preoperative diagnosis of a benign lesion was not in hand...
April 17, 2018: BMJ Case Reports
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