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https://www.readbyqxmd.com/read/29509531/barrett-s-esophagus-state-of-the-art
#1
Marcel Tanţău, Mihaela Laszlo, Alina Tanţău
Barrett's Esophagus (BE) is defined as a premalignant condition, where the esophageal squamous epithelium is replaced by intestinal epithelium. Specialized intestinal columnar metaplasia, typical for Barrett's esophagus, does not generate any symptoms. Most of the patients are initially seen for symptoms associated with the gastroesophageal reflux disease (GERD), such as heartburn, regurgitation and dysphagia. The histological progression from intestinal metaplasia to dysplasia and then to BE-associated adenocarcinoma forms the argument for screening and endoscopic monitoring...
January 2018: Chirurgia
https://www.readbyqxmd.com/read/29476056/evolution-of-barrett-s-esophagus-through-space-and-time-at-single-crypt-and-whole-biopsy-levels
#2
Pierre Martinez, Diego Mallo, Thomas G Paulson, Xiaohong Li, Carissa A Sanchez, Brian J Reid, Trevor A Graham, Mary K Kuhner, Carlo C Maley
The low risk of progression of Barrett's esophagus (BE) to esophageal adenocarcinoma can lead to over-diagnosis and over-treatment of BE patients. This may be addressed through a better understanding of the dynamics surrounding BE malignant progression. Although genetic diversity has been characterized as a marker of malignant development, it is still unclear how BE arises and develops. Here we uncover the evolutionary dynamics of BE at crypt and biopsy levels in eight individuals, including four patients that experienced malignant progression...
February 23, 2018: Nature Communications
https://www.readbyqxmd.com/read/29433868/critical-intestinal-cells-originate-from-the-host-in-enteroid-derived-tissue-engineered-intestine
#3
Barrett P Cromeens, Yijie Wang, Yanchun Liu, Jed Johnson, Gail E Besner
BACKGROUND: Enteroid-derived tissue-engineered intestine (TEI) contains intestinal subepithelial myofibroblasts (ISEMFs) and smooth muscle cells (SMCs). However, these cell types are not present in the donor enteroids. We sought to determine the origin of these cell types and to quantify their importance in TEI development. MATERIALS AND METHODS: Crypts from pan-EGFP or LGR5-EGFP mice were used for enteroid culture and subsequent implantation for the production of TEI...
March 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29417867/bioinformatic-analyses-of-microrna-targeted-genes-and-microarray-identified-genes-correlated-with-barrett-s-esophagus
#4
Jing Lv, Jijun Liu, Lei Guo, Jun Zhang, Yan Cheng, Chu Chen, Heping Zhao, Jihan Wang
Barrett's esophagus (BE) is defined as a metaplasia condition in the distal esophagus, in which the native squamous epithelium lining is replaced by a columnar epithelium with or without intestinal metaplasia. It is commonly accepted that BE is a precancerous lesion for esophageal adenocarcinoma. The aim of this study was to investigate the aberrant microRNAs (miRNAs) and differentially expressed genes (DEGs) associated with BE based on online microarray datasets. One miRNA and five gene expression profiling datasets were retrieved from the Gene Expression Omnibus Database...
February 8, 2018: Cell Cycle
https://www.readbyqxmd.com/read/29393168/endoscopic-submucosal-dissection-for-adenocarcinomas-of-the-esophagogastric-junction
#5
Yasuaki Nagami, Masaki Ominami, Koji Otani, Shuhei Hosomi, Fumio Tanaka, Koichi Taira, Noriko Kamata, Hirokazu Yamagami, Tetsuya Tanigawa, Masatsugu Shiba, Toshio Watanabe, Yasuhiro Fujiwara
BACKGROUND: Adenocarcinoma of the esophagogastric junction (EGJ) is uncommon in Eastern countries, including Japan, but it is believed that the incidence of EGJ adenocarcinoma will increase in Asia in the future due to the decreasing incidence of Helicobacter pylori infection. Endoscopic submucosal dissection (ESD) is a minimally invasive and curative treatment that allows precise pathological assessment. SUMMARY: Magnifying endoscopy with narrow-band imaging may be useful for differential diagnoses and for delineating the cancer margin of EGJ adenocarcinoma, but subsquamous carcinoma extension, which is the invasion of EGJ adenocarcinoma beneath the normal esophageal squamous epithelium, makes it difficult to detect cancer margins of the oral side in ESD for EGJ adenocarcinoma...
February 1, 2018: Digestion
https://www.readbyqxmd.com/read/29389993/effects-of-six-common-dietary-nutrients-on-murine-intestinal-organoid-growth
#6
Tenson Cai, Yijun Qi, Albert Jergens, Michael Wannemuehler, Terrence A Barrett, Qun Wang
The intestinal epithelium of the gastrointestinal (GI) tract constantly renews itself to absorb nutrients and provide protection for the body from the outside world. Since the intestinal epithelium is constantly exposed to various chemicals and dietary components, it is critical to determine which constituents promote or inhibit intestinal epithelium health and growth rate. Intestinal organoids, three-dimensional miniature models of the intestines, represent an ex vivo tool to investigate intestinal physiology and growth patterns...
2018: PloS One
https://www.readbyqxmd.com/read/29370762/circular-stripes-were-more-common-in-barrett-s-esophagus-after-acetic-acid-staining
#7
Yating Sun, Shiyang Ma, Li Fang, Jinhai Wang, Lei Dong
BACKGROUND: The diagnosis of Barrett's esophagus (BE) is disturbed by numerous factors, including correct gastroesophageal junction judgment, the initial location of the Z-line and the biopsy result above it. The acetic acid (AA) could help to diagnose BE better than high resolution imaging technology or magnifying endoscopy, by providing enhanced contrast of different epithelium. We have noticed AA could produce multiple white circular lines, forming circular stripes (CS), at lower esophagus, which hasn't been reported by others...
January 25, 2018: BMC Gastroenterology
https://www.readbyqxmd.com/read/29179229/learning-curve-and-competence-for-volumetric-laser-endomicroscopy-in-barrett-s-esophagus-using-cumulative-sum-analysis
#8
Arvind J Trindade, Sumant Inamdar, Michael S Smith, Lisa Rosen, Dennis Han, Kenneth J Chang, Cadman L Leggett, Charles J Lightdale, Douglas K Pleskow, Divyesh V Sejpal, Guillermo J Tearney, Rebecca M Thomas, Michael B Wallace
Background and study aims  Little is known about the learning curve for image interpretation in volumetric laser endomicroscopy (VLE) in Barrett's esophagus (BE). The goal of this study was to calculate the learning curve, competence of image interpretation, sensitivity, specificity, and accuracy of VLE among novice users. Methods  31 novice users viewed 96 VLE images electronically at three academic institutions after a brief training session. There were 24 images of each histologic type: normal gastric cardia, normal esophageal squamous epithelium, non-neoplastic BE, and neoplastic BE...
November 27, 2017: Endoscopy
https://www.readbyqxmd.com/read/29152066/identification-and-validation-of-fgfr2-peptide-for-detection-of-early-barrett-s-neoplasia
#9
Juan Zhou, Lei He, Zhijun Pang, Henry D Appelman, Rork Kuick, David G Beer, Meng Li, Thomas D Wang
The incidence of esophageal adenocarcinoma (EAC) is rising rapidly, and early detection within the precursor state of Barrett's esophagus (BE) is challenged by flat premalignant lesions that are difficult detect with conventional endoscopic surveillance. Overexpression of cell surface fibroblast growth factor receptor 2 (FGFR2) is an early event in progression of BE to EAC, and is a promising imaging target. We used phage display to identify the peptide SRRPASFRTARE that binds specifically to the extracellular domain of FGFR2...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29078688/endoscopic-mucosal-ablation-and-resection-of-barrett-s-esophagus-and-related-diseases
#10
REVIEW
Juan A Muñoz-Largacha, Virginia R Litle
The prevalence of gastroesophageal reflux disease as well as the incidence of Barrett's esophagus (BE) has increased in the Western world over the last decades. The chronic reflux of gastric secretions injuries the esophageal mucosa and triggers cellular and molecular changes inducing the transformation of the normal squamous mucosa into columnar metaplastic epithelium. BE is a premalignant condition that can progress to low-grade dysplasia, high-grade dysplasia and ultimately esophageal adenocarcinoma. An early diagnosis of dysplastic changes and the adoption of appropriate therapeutic approaches are essential to improve patient outcomes and survival...
2017: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29075622/autistic-siblings-with-novel-mutations-in-two-different-genes-insight-for-genetic-workups-of-autistic-siblings-and-connection-to-mitochondrial-dysfunction
#11
Barrett J Burger, Shannon Rose, Sirish C Bennuri, Pritmohinder S Gill, Marie L Tippett, Leanna Delhey, Stepan Melnyk, Richard E Frye
The prevalence of autism spectrum disorder (ASD) is high, yet the etiology of this disorder is still uncertain. Advancements in genetic analysis have provided the ability to identify potential genetic changes that may contribute to ASD. Interestingly, several genetic syndromes have been linked to metabolic dysfunction, suggesting an avenue for treatment. In this case study, we report siblings with ASD who had similar initial phenotypic presentations. Whole exome sequencing (WES) revealed a novel c.795delT mutation in the WDR45 gene affecting the girl, which was consistent with her eventual progression to a Rett-like syndrome phenotype including seizures along with a stereotypical cyclic breathing pattern...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29040490/proceedings-from-an-international-conference-on-ablation-therapy-for-barrett-s-mucosa-brittany-france-31-august-2-september-1997
#12
C G Bremner, T R Demeester
The increasing incidence of adenocarcinoma of the lower esophagus and cardia arising in Barrett's metaplastic epithelium continues to be of great concern because medical and surgical efforts to reverse the process have been disappointing. A potential answer to the problem is removal of the metaplastic epithelium. Modern technology has introduced physical and chemical modalities which facilitate ablation of the neo-epithelium endoscopically. These techniques have been used in several centers, and preliminary results are encouraging...
November 1, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29037468/insights-into-the-pathophysiology-of-esophageal-adenocarcinoma
#13
Michael Quante, Trevor A Graham, Marnix Jansen
Although researchers have identified genetic alterations that contribute to development of esophageal adenocarcinoma, we know little about features of patients or environmental factors that mediate progression of chronic acid biliary reflux to Barrett's esophagus and cancer. Increasing our understanding of the mechanisms by which normal squamous epithelium progresses to early-stage invasive cancer will help formulate rational surveillance guidelines and allow us to divest resources away from patients at low risk of malignancy...
January 2018: Gastroenterology
https://www.readbyqxmd.com/read/29019984/transitional-basal-cells-at-the-squamous-columnar-junction-generate-barrett-s-oesophagus
#14
Ming Jiang, Haiyan Li, Yongchun Zhang, Ying Yang, Rong Lu, Kuancan Liu, Sijie Lin, Xiaopeng Lan, Haikun Wang, Han Wu, Jian Zhu, Zhongren Zhou, Jianming Xu, Dong-Kee Lee, Lanjing Zhang, Yuan-Cho Lee, Jingsong Yuan, Julian A Abrams, Timothy C Wang, Antonia R Sepulveda, Qi Wu, Huaiyong Chen, Xin Sun, Junjun She, Xiaoxin Chen, Jianwen Que
In several organ systems, the transitional zone between different types of epithelium is a hotspot for pre-neoplastic metaplasia and malignancy, but the cells of origin for these metaplastic epithelia and subsequent malignancies remain unknown. In the case of Barrett's oesophagus, intestinal metaplasia occurs at the gastro-oesophageal junction, where stratified squamous epithelium transitions into simple columnar cells. On the basis of a number of experimental models, several alternative cell types have been proposed as the source of this metaplasia but in all cases the evidence is inconclusive: no model completely mimics Barrett's oesophagus in terms of the presence of intestinal goblet cells...
October 26, 2017: Nature
https://www.readbyqxmd.com/read/28958906/impact-of-advanced-endoscopic-imaging-on-barrett-s-esophagus-in-daily-clinical-practice
#15
Sabina Beg, Mussa Mensa, Mark Fullard, Elizabeth Finerty, Paul Richman, Anthony Leahy
BACKGROUND AND AIMS: Several advanced imaging techniques have been proposed to improve the visualization of dysplastic regions within Barrett's epithelium, with some evidence for the use of narrow-band imaging (NBI) and acetic acid chromoendoscopy (AAC). METHODS: We retrospectively analyzed consecutive cases of Barrett's esophagus, diagnosed using white-light endoscopy and confirmed histologically by the presence of intestinal metaplasia, between April 2007 and April 2010 in a large community hospital...
September 25, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28941013/deoxycholic-acid-promotes-development-of-gastroesophageal-reflux-disease-and-barrett-s-oesophagus-by-modulating-integrin-%C3%AE-v-trafficking
#16
David O Prichard, Anne Marie Byrne, James O Murphy, John V Reynolds, Jacintha O'Sullivan, Ronan Feighery, Brendan Doyle, Osama Sharaf Eldin, Stephen P Finn, Aoife Maguire, Deirdre Duff, Dermot P Kelleher, Aideen Long
The fundamental mechanisms underlying erosive oesophagitis and subsequent development of Barrett's oesophagus (BO) are poorly understood. Here, we investigated the contribution of specific components of the gastric refluxate on adhesion molecules involved in epithelial barrier maintenance. Cell line models of squamous epithelium (HET-1A) and BO (QH) were used to examine the effects of bile acids on cell adhesion to extracellular matrix proteins (Collagen, laminin, vitronectin, fibronectin) and expression of integrin ligands (α3 , α4, α5 , α6 and αν )...
December 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28930282/esophageal-cancer-genomic-and-molecular-characterization-stem-cell-compartment-and-clonal-evolution
#17
REVIEW
Ugo Testa, Germana Castelli, Elvira Pelosi
Esophageal cancer (EC) is the eighth most common cancer and is the sixth leading cause of death worldwide. The incidence of histologic subtypes of EC, esophageal adenocarcinoma (EAC) and esophageal squamous carcinoma (ESCC), display considerable geographic variation. EAC arises from metaplastic Barrett's esophagus (BE) in the context of chronic inflammation secondary to exposure to acid and bile. The main risk factors for developing ESCC are cigarette smoking and alcohol consumption. The main somatic genetic abnormalities showed a different genetic landscape in EAC compared to ESCC...
September 14, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28922414/a-nonrandomized-trial-of-vitamin-d-supplementation-for-barrett-s-esophagus
#18
MULTICENTER STUDY
Linda C Cummings, Prashanthi N Thota, Joseph E Willis, Yanwen Chen, Gregory S Cooper, Nancy Furey, Beth Bednarchik, Bronia M Alashkar, John Dumot, Ashley L Faulx, Stephen P Fink, Adam M Kresak, Basel Abusneineh, Jill Barnholtz-Sloan, Patrick Leahy, Martina L Veigl, Amitabh Chak, Sanford D Markowitz
BACKGROUND: Vitamin D deficiency may increase esophageal cancer risk. Vitamin D affects genes regulating proliferation, apoptosis, and differentiation and induces the tumor suppressor 15-hydroxyprostaglandin dehydrogenase (PGDH) in other cancers. This nonrandomized interventional study assessed effects of vitamin D supplementation in Barrett's esophagus (BE). We hypothesized that vitamin D supplementation may have beneficial effects on gene expression including 15-PGDH in BE. METHODS: BE subjects with low grade or no dysplasia received vitamin D3 (cholecalciferol) 50,000 international units weekly plus a proton pump inhibitor for 12 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28905803/diagnosis-and-treatment-of-gastroesophageal-reflux-disease-complicated-by-barrett-s-esophagus
#19
Andriy Stasyshyn
The aim of the study was to evaluate the effectiveness of a diagnostic and therapeutic algorithm for gastroesophageal reflux disease complicated by Barrett's esophagus in 46 patients. MATERIALS AND METHODS: A diagnostic and therapeutic algorithm for complicated GERD was developed. To describe the changes in the esophagus with reflux esophagitis, the Los Angeles classification was used. Intestinal metaplasia of the epithelium in the lower third of the esophagus was assessed using videoendoscopy, chromoscopy, and biopsy...
August 31, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28881895/balloon-based-esophageal-cryoablation-with-a-novel-focal-ablation-device-dose-finding-and-safety-in-porcine-and-human-models
#20
D W Schölvinck, S Friedland, G Triadafilopoulos, T Valli, M I van Berge Henegouwen, J J G H M Bergman, Bas L A M Weusten
The new Cryoballoon Focal Ablation System (CbFAS), a through-the-scope catheter with battery-powered handle that delivers cryogenic fluid into an inflated balloon, differs from current cryotherapy methods used for treatment of Barrett's epithelium. In this dose-finding study, short- and long-term histopathological effects and safety of the CbFAS were evaluated. Cryoablations with (supra)therapeutic durations (4-24 seconds) were performed in pigs that survived for 12 or 48 hours or 4 or 28 days. Next, cryoablations (durations based on animal data) were performed in normal mucosa of esophageal cancer patients scheduled to undergo esophagectomy...
November 1, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
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