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https://www.readbyqxmd.com/read/28425652/endoscopic-findings-of-esophagogastric-junction-in-children
#1
Yoshiko Nakayama, Shinobu Ida
Esophagogastric landmarks are recognizable in the same way both in children and in adults, and palisade-shaped vessels can be observed at the distal position of esophageal mucosa, even in infants. Few studies have been done in respect to Barrett's esophagus (BE) in children. Incidence of endoscopically suspected BE among all children undergoing esophagogastroduodenoscopy (EGD) is approximately 0.25-1.4%, but can be up to 9.7% in patients with gastroesophageal reflux disease (GERD). Some data suggest that BE is an acquired disorder and point to the possibility of a congenital component in combination with severe mucosal injury...
April 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28404744/the-role-of-cb1-in-intestinal-permeability-and-inflammation
#2
Mustafa A Karwad, Daniel G Couch, Elena Theophilidou, Sarir Sarmad, David A Barrett, Michael Larvin, Karen L Wright, Jonathan N Lund, Saoirse E O'Sullivan
The endocannabinoid system has previously been shown to play a role in the permeability and inflammatory response of the human gut. The goal of our study was to determine the effects of endogenous anandamide (AEA) and 2-arachidonoyl glycerol (2-AG) on the permeability and inflammatory response of intestinal epithelium under normal, inflammatory, and hypoxic conditions. Human intestinal mucosa was modeled using Caco-2 cells. Human tissue was collected from planned colorectal resections. Accumulation of AEA and 2-AG was achieved by inhibiting their metabolizing enzymes URB597 (a fatty acid amide hydrolase inhibitor) and JZL184 (a monoacylglycerol lipase inhibitor)...
April 12, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28370911/esophageal-sensitivity-to-acid-in-patients-with-barrett-s-esophagus-is-not-related-to-preserved-esophageal-mucosal-integrity
#3
P W Weijenborg, A J P M Smout, K K Krishnadath, J G H M Bergman, J Verheij, A J Bredenoord
BACKGROUND: Patients with Barrett's esophagus (BE) usually have severe gastroesophageal reflux. However, they often have surprisingly few reflux symptoms. We hypothesized that BE patients are less sensitive to acid than gastroesophageal reflux disease (GERD) patients without Barrett and that this is due to an unusual preservation of mucosal integrity of the squamous epithelium prohibiting transepithelial acid diffusion. METHODS: We prospectively analyzed esophageal sensitivity and esophageal mucosal integrity in GERD patients with and without BE and healthy subjects...
March 30, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28336546/barrett-s-metaplasia-develops-from-cellular-reprograming-of-esophageal-squamous-epithelium-due-to-gastroesophageal-reflux
#4
Carlos D Minacapelli, Manisha Bajpai, Xin Geng, Christina L Cheng, Abhishek A Chouthai, Rhonda F Souza, Stuart Jon Spechler, Kiron M Das
OBJECTIVE: Gastroesophageal reflux disease (GERD) clinically predisposes to columnar Barrett's metaplasia (BM) in the distal esophagus. We demonstrate evidence supporting cellular origin of BM from reprograming or trans-commitment of resident normal esophageal squamous (NES) epithelial cells in response to acid and bile exposure using an in vitro cell culture model. DESIGN: The hTERT-immortalized NES cell line, NES-B10T, was exposed 5 min/day to Acid and Bile (A+B) mixture for 30 weeks...
March 23, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28315927/hla-dr-expression-in-tumor-epithelium-is-an-independent-prognostic-indicator-in-esophageal-adenocarcinoma-patients
#5
Margaret R Dunne, Adriana J Michielsen, Katie E O'Sullivan, Mary Clare Cathcart, Ronan Feighery, Brendan Doyle, Jenny A Watson, Naoimh J O'Farrell, Narayanasamy Ravi, Elaine Kay, John V Reynolds, Elizabeth J Ryan, Jacintha O'Sullivan
Esophageal adenocarcinoma (EAC) is an aggressive cancer with poor prognosis, and incidence is increasing rapidly in the Western world. Measurement of immune markers has been shown to have prognostic significance in a growing number of cancers, but whether this is true for EAC has yet to be evaluated. This study aimed to characterize HLA-DR expression in the esophagus across the inflammation to cancer progression sequence and to assess the prognostic significance of HLA-DR expression in EAC. Tissue microarrays (TMA) were constructed from esophageal tissue taken from patients at different stages in the cancer progression sequence; normal, esophagitis, Barrett's esophagus (BE), low- and high-grade dysplasia (LGD, HGD) and EAC...
March 18, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28258457/from-heartburn-to-barrett-s-esophagus-and-beyond
#6
Francisco Schlottmann, Marco G Patti, Nicholas J Shaheen
BACKGROUND: Gastroesophageal reflux disease (GERD) affects an estimated 20% of the population in the USA, and its prevalence is increasing worldwide. About 10-15% of patients with GERD will develop Barrett's esophagus (BE). AIMS: The aims of this study were to review the available evidence of the pathophysiology of BE and the role of anti-reflux surgery in the treatment of this disease. RESULTS: The transformation of the squamous epithelium into columnar epithelium with goblet cells is due to the chronic injury produced by repeated reflux episodes...
March 3, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28223834/bile-salt-receptor-tgr5-is-highly-expressed-in-esophageal-adenocarcinoma-and-precancerous-lesions-with-significantly-worse-overall-survival-and-gender-differences
#7
Chunhong Pang, Amy LaLonde, Tony E Godfrey, Jianwen Que, Jun Sun, Tong Tong Wu, Zhongren Zhou
Bile acid reflux in the esophagus plays an important role in the carcinogenesis of esophageal adenocarcinoma (EAC). The G-protein coupled bile acid receptor (TGR5) has been associated with the development of gastrointestinal cancer. However, little is known regarding the role of TGR5 in esophageal carcinoma and precancerous lesions. We analyzed genomic DNA from 116 EACs for copy number aberrations via Affymetrix SNP6.0 microarrays. The TGR5 gene locus was amplified in 12.7% (14/116) of the EACs. The TGR5 protein expression was also assessed using immunohistochemistry from tissue microarrays, including Barrett's esophagus (BE), low-(LGD) and high-grade dysplasia (HGD), columnar cell metaplasia (CM), squamous epithelium (SE), EAC and squamous cell carcinoma...
2017: Clinical and Experimental Gastroenterology
https://www.readbyqxmd.com/read/28216140/expression-profiles-of-cancer-stem-cell-markers-cd133-cd44-musashi-1-and-epcam-in-the-cardiac-mucosa-barrett-s-esophagus-early-esophageal-adenocarcinoma-advanced-esophageal-adenocarcinoma-sequence
#8
Anna Mokrowiecka, Lothar Veits, Christina Falkeis, Jacek Musial, Radzislaw Kordek, Mariusz Lochowski, Jozef Kozak, Agnieszka Wierzchniewska-Lawska, Michael Vieth, Ewa Malecka-Panas
INTRODUCTION: Barrett's esophagus (BE), which develops as a result of gastroesophageal reflux disease, is a preneoplastic condition for esophageal adenocarcinoma (EAC). A new hypothesis suggests that cancer is a disease of stem cells, however, their expression and pathways in BE - EAC sequence are not fully elucidated yet. AIMS: We used a panel of putative cancer stem cells markers to identify stem cells in consecutive steps of BE-related cancer progression. METHODS: Immunohistochemistry was performed on formalin-fixed, paraffin-embedded blocks from 58 patients with normal cardiac mucosa (n=5), BE (n=14), early EAC (pT1) from mucosal resection (n=17) and advanced EAC (pT1-T4) from postoperative specimens (n=22)...
March 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28212604/high-expression-of-claudin-2-in-esophageal-carcinoma-and-precancerous-lesions-is-significantly-associated-with-the-bile-salt-receptors-vdr-and-tgr5
#9
Sohaib Abu-Farsakh, Tongtong Wu, Amy Lalonde, Jun Sun, Zhongren Zhou
BACKGROUND: Claudins are a family of integral membrane proteins and are components of tight junctions (TJs). Many TJ proteins are known to tighten the cell structure and maintain a barrier. Claudin-2 forms gated paracellular channels and allows sodium ions and other small positively charged ions to cross between adjacent cells. Recently, we found that vitamin D receptor (VDR) enhanced Claudin-2 expression in colon and that bile salt receptors VDR and Takeda G-protein coupled receptor5 (TGR5) were highly expressed in esophageal adenocarcinoma (EAC) and precancerous lesions...
February 17, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28212575/upregulation-of-mucin-glycoprotein-muc1-in-the-progression-to-esophageal-adenocarcinoma-and-therapeutic-potential-with-a-targeted-photoactive-antibody-drug-conjugate
#10
Mohammed Adil Butt, Hayley Pye, Rehan J Haidry, Dahmane Oukrif, Saif-U-Rehman Khan, Ignazio Puccio, Michael Gandy, Halla W Reinert, Ellie Bloom, Mohammed Rashid, Gokhan Yahioglu, Mahendra P Deonarain, Rifat Hamoudi, Manuel Rodriguez-Justo, Marco R Novelli, Laurence B Lovat
BACKGROUND: Mucin glycoprotein 1 (MUC1) is a glycosylated transmembrane protein on epithelial cells. We investigate MUC1 as a therapeutic target in Barrett's epithelium (BE) and esophageal adenocarcinoma (EA) and provide proof of concept for a light based therapy targeting MUC1. RESULTS: MUC1 was present in 21% and 30% of significantly enriched pathways comparing BE and EA to squamous epithelium respectively. MUC1 gene expression was x2.3 and x2.2 higher in BE (p=<0...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28206968/intratumoral-lactate-metabolism-in-barrett-s-esophagus-and-adenocarcinoma
#11
Heikki Huhta, Olli Helminen, Sami Palomäki, Joonas H Kauppila, Juha Saarnio, Petri P Lehenkari, Tuomo J Karttunen
BACKGROUND: Monocarboxylate transporters (MCTs) are cell membrane proteins which transport pyruvate, lactate and ketone bodies across the plasma membrane. MCTs are activated in various cancers, but their expression in esophageal adenocarcinoma is not known. The present study was conducted to elucidate the expression of MCTs in esophageal adenocarcinoma and its precursor lesions. RESULTS: Cytoplasmic MCT1, MCT4 and MTCO1 expression linearly increased from normal epithelium to Barrett's mucosa to dysplasia and cancer...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28187035/hepatocyte-antigen-expression-in-barrett-esophagus-and-associated-neoplasia
#12
Sejal S Shah, Vishal S Chandan
Hepatocyte antigen or hepatocyte paraffin 1 (Hep Par 1) is widely used as a diagnostic immunomarker for hepatocellular carcinoma. It has also been identified as a rate-limiting enzyme of the urea cycle, carbamoyl phosphate synthetase 1. Hep Par 1 has been detected in non-neoplastic small intestinal epithelium, but its expression in Barrett esophagus and its related neoplasia has not been well investigated. We immunohistochemically evaluated expression of Hep Par 1 on 75 cases of Barrett esophagus (25 cases without dysplasia, 16 cases with low-grade dysplasia, 25 cases with high-grade dysplasia, and 9 cases with intramucosal adenocarcinoma) on endoscopic biopsies and endoscopic mucosal resections...
February 9, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28174399/-treatment-strategy-for-esophagogastric-junction-carcinoma-highly-controversial-topic-in-the-upper-gastrointestinal-malignancy
#13
Hiroharu Yamashita, Yasuyuki Seto
Among the 3 subtypes of adenocarcinoma of the esophagogastric junction (AEG), Siewert type I is basically consistent with esophageal adenocarcinoma arising from the Barrett epithelium( Barrett's adenocarcinoma), and type III is gastric carcinoma with esophageal invasion over the esophagogastric junction(EGJ). It is generally endorsed that type I is treated as an esophageal carcinoma, and type III as a gastric carcinoma. Siewert type II carcinoma, located just at the borderline between the esophagus and the stomach, has been a highly controversial topic regarding surgical approach, extent of esophagogastric resection and lymphadenectomy, type of reconstruction, and even the staging system...
January 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28137494/characteristics-associated-with-clinical-severity-and-inflammatory-phenotype-of-naturally-occurring-virus-induced-exacerbations-of-asthma-in-adults
#14
Asger Bjerregaard, Ingrid A Laing, Nadia Poulsen, Vibeke Backer, Asger Sverrild, Markus Fally, Siew-Kim Khoo, Lucy Barrett, Svetlana Baltic, Philip J Thompson, Glenys Chidlow, Chisha Sikazwe, David W Smith, Yury A Bochkov, Peter Le Souëf, Celeste Porsbjerg
BACKGROUND: In experimental studies viral infections have been shown to induce type 2 inflammation in asthmatics, but whether this is a feature of naturally occurring virus-induced asthma exacerbations is unknown. Thymic stromal lymphopoietin (TSLP) released from the airway epithelium in response to damage, has been suggested as a link between viral infection and type 2 inflammation, but the role of TSLP in asthma exacerbations is unknown. OBJECTIVE: To assess whether type 2 inflammation, as measured by sputum eosinophils and fractional exhaled nitric oxide (FeNO), is a feature of naturally occurring virus-induced exacerbations of asthma and whether TSLP is associated with this type 2 inflammation...
February 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28122386/endoscopic-management-of-barrett-s-esophagus-european-society-of-gastrointestinal-endoscopy-esge-position-statement
#15
Bas Weusten, Raf Bisschops, Emanuel Coron, Mário Dinis-Ribeiro, Jean-Marc Dumonceau, José-Miguel Esteban, Cesare Hassan, Oliver Pech, Alessandro Repici, Jacques Bergman, Massimiliano di Pietro
Current practices for the management of Barrett's esophagus (BE) vary across Europe, as several national European guidelines exist. This Position Statement from the European Society of Gastrointestinal Endoscopy (ESGE) is an attempt to homogenize recommendations and, hence, patient management according to the best scientific evidence and other considerations (e.g. health policy). A Working Group developed consensus statements, using the existing national guidelines as a starting point and considering new evidence in the literature...
February 2017: Endoscopy
https://www.readbyqxmd.com/read/28062361/redox-signaling-in-the-gastrointestinal-tract
#16
REVIEW
Salvador Pérez, Raquel Taléns-Visconti, Sergio Rius-Pérez, Isabela Finamor, Juan Sastre
Redox signaling regulates physiological self-renewal, proliferation, migration and differentiation in gastrointestinal epithelium by modulating Wnt/β-catenin and Notch signaling pathways mainly through NADPH oxidases (NOXs). In the intestine, intracellular and extracellular thiol redox status modulates the proliferative potential of epithelial cells. Furthermore, commensal bacteria contribute to intestine epithelial homeostasis through NOX1- and dual oxidase 2-derived reactive oxygen species (ROS). The loss of redox homeostasis is involved in the pathogenesis and development of a wide diversity of gastrointestinal disorders, such as Barrett's esophagus, esophageal adenocarcinoma, peptic ulcer, gastric cancer, ischemic intestinal injury, celiac disease, inflammatory bowel disease and colorectal cancer...
March 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28058012/evolving-management-of-metaplasia-and-dysplasia-in-barrett-s-epithelium
#17
REVIEW
Richard P T Evans, Moustafa Mabrouk Mourad, Simon G Fisher, Simon R Bramhall
Oesophageal cancer affects more than 450000 people worldwide and despite continued medical advancements the incidence of oesophageal cancer is increasing. Oesophageal cancer has a 5 year survival of 15%-25% and now globally attempts are made to more aggressively diagnose and treat Barrett's oesophagus the known precursor to invasive disease. Currently diagnosis the of Barrett's oesophagus is predominantly made after endoscopic visualisation and histopathological confirmation. Minimally invasive techniques are being developed to improve the viability of screening programs...
December 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28042232/progression-of-barrett-s-esophagus-toward-esophageal-adenocarcinoma-an-overview
#18
REVIEW
Nele Schoofs, Raf Bisschops, Hans Prenen
In Barrett's esophagus, normal squamous epithelium is replaced by a metaplastic columnar epithelium as a consequence of chronic gastroesophageal reflux disease. There is a strong association with esophageal adenocarcinoma. In view of the increasing incidence of esophageal adenocarcinoma in the western world, it is important that more attention be paid to the progression of Barrett's esophagus toward esophageal adenocarcinoma. Recently, several molecular factors have been identified that contribute to the sequence towards adenocarcinoma...
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/28012816/-small-white-sign-in-barrett-s-esophageal-cancer-under-the-squamous-epithelium
#19
Rintaro Hashimoto, Dai Hirasawa, Akimichi Chonan, Hajime Yamaoka, Masato Nakahori
No abstract text is available yet for this article.
December 21, 2016: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27995191/non-radical-stepwise-complete-endoscopic-resection-of-barrett-s-epithelium-in-short-segment-barrett-s-esophagus-has-a-low-stricture-rate
#20
Andreas Koutsoumpas, Lai Mun Wang, Adam A Bailey, Richard Gillies, Robert Marshall, Michael Booth, Bruno Sgromo, Nick Maynard, Barbara Braden
Background and aims: Radical endoscopic excision of Barrett's epithelium performing 4 - 6 endoscopic resections during the same endoscopic session results in complete Barrett's eradication but has a high stricture rate (40 - 80 %). Therefore radiofrequency ablation is preferred after endoscopic mucosal resection (EMR) of visible nodules. We investigated the clinical outcome of non-radical, stepwise endoscopic mucosal resection with a maximum of two endoscopic resections per endoscopic session. Methods: We analysed our prospectively maintained database of patients undergoing esophageal EMR for early neoplasia in Barrett's esophagus from 2009 to 2014...
December 2016: Endoscopy International Open
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