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Intestinal metaplasia

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https://www.readbyqxmd.com/read/28441455/gene-expression-study-and-pathway-analysis-of-histological-subtypes-of-intestinal-metaplasia-that-progress-to-gastric-cancer
#1
Osmel Companioni, José Miguel Sanz-Anquela, María Luisa Pardo, Eulàlia Puigdecanet, Lara Nonell, Nadia García, Verónica Parra Blanco, Consuelo López, Victoria Andreu, Miriam Cuatrecasas, Maddi Garmendia, Javier P Gisbert, Carlos A Gonzalez, Núria Sala
BACKGROUND: Intestinal metaplasia (IM) is a precursor lesion that precedes gastric cancer (GC). There are two IM histological subtypes, complete (CIM) and incomplete (IIM), the latter having higher progression rates to GC. This study was aimed at analysing gene expression and molecular processes involved in the progression from normal mucosa to IM, and also from IM subtypes to GC. METHODOLOGY: We used expression data to compare the transcriptome of healthy gastric mucosa to that of IM not progressing to GC, and the transcriptome of IM subtypes that had progressed to GC to those that did not progress...
2017: PloS One
https://www.readbyqxmd.com/read/28436254/the-correlation-between-histological-gastritis-staging-olga-olgim-and-serum-pepsinogen-test-in-assessment-of-gastric-atrophy-intestinal-metaplasia-in-china
#2
Xiaoteng Wang, Bin Lu, Lina Meng, Yihong Fan, Shuo Zhang, Meng Li
BACKGROUND: Serum pepsinogen (PG) test, as an indicator of gastric mucosal atrophy, reflects the functional and morphologic status of gastric mucosal and it is suggested to serve as a useful predictive marker for patients with gastric cancer (GC). The available classifications of gastritis, known as the Operative Link on Gastritis Assessment (OLGA) and Operative Link on Gastritis Intestinal Metaplasia (OLGIM), integrating the severity and topography of atrophy/intestinal metaplasia (IM), have been gradually accepted and used in screening for GC in recent years...
April 22, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28425652/endoscopic-findings-of-esophagogastric-junction-in-children
#3
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/28423364/increased-expression-of-deleted-in-malignant-brain-tumors-dmbt1-gene-in-precancerous-gastric-lesions-findings-from-human-and-animal-studies
#4
Jone Garay, M Blanca Piazuelo, Lizbeth Lopez-Carrillo, Yelda A Leal, Sumana Majumdar, Li Li, Nataly Cruz-Rodriguez, Silvia J Serrano-Gomez, Carlos S Busso, Barbara G Schneider, Alberto G Delgado, Luis E Bravo, Angela M Crist, Stryder M Meadows, M Constanza Camargo, Keith T Wilson, Pelayo Correa, Jovanny Zabaleta
Helicobacter pylori infection triggers a cascade of inflammatory stages that may lead to the appearance of non-atrophic gastritis, multifocal atrophic, intestinal metaplasia, dysplasia, and cancer. Deleted in malignant brain tumors 1 (DMBT1) belongs to the group of secreted scavenger receptor cysteine-rich proteins and is considered to be involved in host defense by binding to pathogens. Initial studies showed its deletion and loss of expression in a variety of tumors but the role of this gene in tumor development is not completely understood...
April 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422719/fbxw7-haploinsufficiency-loses-its-protection-against-dna-damage-and-accelerates-mnu-induced-gastric-carcinogenesis
#5
Yannan Jiang, Xinming Qi, Xinyu Liu, Jun Zhang, Jun Ji, Zhenggang Zhu, Jin Ren, Yingyan Yu
Fbxw7, a subunit of the SCF E3 ubiquitin ligase, recognizes oncoprotein substrates and leads to their proteasomal degradation. Fbxw7 acts as a tumor suppressor via inducing apoptosis and growth arrest in various kinds of tumors. To clarify the initiating role in gastric carcinogenesis as well as the histologic characterization of tumor in Fbxw7 allele haploinsufficient mice, we generated Fbxw7 heterozygous knockout mice (Fbxw7+/-) and treated them with chemical carcinogen N-methyl-N-nitrosourea (MNU) at 5-6 weeks of age...
April 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28419119/plasma-ghrelin-level-and-plasma-ghrelin-obestatin-ratio-are-related-to-intestinal-metaplasia-in-elderly-patients-with-functional-dyspepsia
#6
Su Hwan Kim, Ji Won Kim, Junsu Byun, Ji Bong Jeong, Byeong Gwan Kim, Kook Lae Lee
BACKGROUND: Whether plasma ghrelin/obestatin levels are associated with Helicobacter pylori (H. pylori) infection, subtypes of functional dyspepsia (FD), and gastric mucosal histology has not yet been established in elderly patients. OBJECTIVE: The aim of this study was to determine whether plasma ghrelin and obestatin levels are related to gastric mucosal histology, H. pylori infection, and FD subtypes in elderly patients with FD. METHODS: Ninety-two patients diagnosed with FD and older than 60 years (median age 69...
2017: PloS One
https://www.readbyqxmd.com/read/28406776/gastric-intestinal-metaplasia-an-intermediate-precancerous-lesion-in-the-cascade-of-gastric-carcinogenesis
#7
Tayyab Hamid Malik, Mujtaba Yousef Al Sayahan, Hussain Ali Al Ahmed, Xu Hong
Gastric intestinal metaplasia, an intermediate lesion in the development of intestinal-type gastric cancer, is observed in the milieu of long standing non-atrophic gastritis and atrophic gastritis. Most patients with intestinal metaplasia remain asymptomatic unless cobalamin deficiency occurs secondary to loss of glands (that produce intrinsic factor and acid). Genetic events that predispose to development of gastric intestinal metaplasia remains an enigma. Mechanisms leading to the progression of atrophy to metaplasia still needs to be comprehensively explored...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28405320/distinct-metaplastic-and-inflammatory-phenotypes-in-autoimmune-and-adenocarcinoma-associated-chronic-atrophic-gastritis
#8
Sangho Jeong, Eunyoung Choi, Christine P Petersen, Joseph T Roland, Alessandro Federico, Rossana Ippolito, Francesco P D'Armiento, Gerardo Nardone, Osamu Nagano, Hideyuki Saya, Marco Romano, James R Goldenring
BACKGROUND: Autoimmune gastritis (AIG) and adenocarcinoma-associated chronic atrophic gastritis (CAG) are both associated with oxyntic atrophy, but AIG patients demonstrate an increased risk of carcinoid tumors rather than the elevated risk of adenocarcinoma observed with CAG. We therefore sought to compare the characteristics of the metaplastic mucosa in AIG and CAG patients. METHODS: We examined markers for metaplasia (spasmolytic polypeptide expressing metaplasia (SPEM) and intestinal metaplasia) as well as proliferation (Ki67) and immune cell populations (neutrophils, macrophages, and eosinophils) in gastric sections from 16 female patients with autoimmune thyroiditis and AIG and 17 patients with CAG associated with gastric adenocarcinoma...
February 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28404010/risk-stratification-of-barrett-s-oesophagus-using-a-non-endoscopic-sampling-method-coupled-with-a-biomarker-panel-a-cohort-study
#9
Caryn S Ross-Innes, Hamza Chettouh, Achilleas Achilleos, Nuria Galeano-Dalmau, Irene Debiram-Beecham, Shona MacRae, Petros Fessas, Elaine Walker, Sibu Varghese, Theodore Evan, Pierre S Lao-Sirieix, Maria O'Donovan, Shalini Malhotra, Marco Novelli, Babett Disep, Phillip V Kaye, Laurence B Lovat, Rehan Haidry, Michael Griffin, Krish Ragunath, Pradeep Bhandari, Adam Haycock, Danielle Morris, Stephen Attwood, Anjan Dhar, Colin Rees, Matt D Rutter, Richard Ostler, Benoit Aigret, Peter D Sasieni, Rebecca C Fitzgerald
BACKGROUND: Barrett's oesophagus predisposes to adenocarcinoma. However, most patients with Barrett's oesophagus will not progress and endoscopic surveillance is invasive, expensive, and fraught by issues of sampling bias and the subjective assessment of dysplasia. We investigated whether a non-endoscopic device, the Cytosponge, could be coupled with clinical and molecular biomarkers to identify a group of patients with low risk of progression suitable for non-endoscopic follow-up. METHODS: In this multicentre cohort study (BEST2), patients with Barrett's oesophagus underwent the Cytosponge test before their surveillance endoscopy...
January 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28402048/sensitivity-of-helicobacter-pylori-detection-by-giemsa-staining-is-poor-in-comparison-with-immunohistochemistry-and-fluorescent-in-situ-hybridization-and-strongly-depends-on-inflammatory-activity
#10
Éva Kocsmár, Ildikó Szirtes, Zsófia Kramer, Attila Szijártó, László Bene, György Miklós Buzás, István Kenessey, Peter Bronsert, Agnes Csanadi, Lisa Lutz, Martin Werner, Ulrich Friedrich Wellner, András Kiss, Zsuzsa Schaff, Gábor Lotz
BACKGROUND: Conventional stainings (including H&E and special stains like Giemsa) are the most widely applied histopathologic detection methods of Helicobacter pylori (HP). MATERIALS AND METHODS: We aimed to compare the diagnostic performance of Giemsa staining with immunohistochemistry (IHC) and fluorescent in situ hybridization (FISH) on a monocentric cohort of 2896 gastric biopsies and relate results to histologic alterations in order to find such histopathologic subgroups in which these methods underperform...
April 12, 2017: Helicobacter
https://www.readbyqxmd.com/read/28395383/extending-magnifying-nbi-diagnosis-of-intestinal-metaplasia-in-the-stomach-the-white-opaque-substance-marker
#11
Takao Kanemitsu, Kenshi Yao, Takashi Nagahama, Kentaro Imamura, Shoko Fujiwara, Toshiharu Ueki, Kenta Chuman, Hiroshi Tanabe, Ota Atsuko, Akinori Iwashita, Toshio Shimokawa, Kunihisa Uchita, Takashi Kanesaka
Light-blue crests and white opaque substance are two features of intestinal metaplasia in the stomach that can be observed with magnifying narrow-band imaging. In a prospective pilot trial, Kanemitsu et al. show that combining these two findings significantly improves the sensitivity for detecting intestinal metaplasia. Background and aims Intestinal metaplasia (IM) of the stomach is associated with an increased risk of differentiated gastric cancer. While it is important to diagnose IM endoscopically, it can be difficult to observe by white-light endoscopy...
April 10, 2017: Endoscopy
https://www.readbyqxmd.com/read/28395057/early-mir-223-upregulation-in-gastroesophageal-carcinogenesis
#12
Matteo Fassan, Deborah Saraggi, Laura Balsamo, Stefano Realdon, Marco Scarpa, Carlo Castoro, Irene Coati, Roberta Salmaso, Fabio Farinati, Vincenza Guzzardo, Diletta Arcidiacono, Giada Munari, Pierluigi Gasparini, Nicola Veronese, Claudio Luchini, Nicola Valeri, Massimo Rugge
Objectives: To test miR-223 upregulation during gastric (intestinal-type) and Barrett esophageal carcinogenesis. Methods: miR-223 expression was assessed by quantitative reverse transcription polymerase chain reaction in a series of 280 gastroesophageal biopsy samples representative of the whole spectrum of phenotypic changes involved in both carcinogenetic cascades. The results were further validated by in situ hybridization on multiple tissue specimens obtained from six surgically treated gastroesophageal adenocarcinomas...
March 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28366441/narrow-band-imaging-versus-white-light-versus-mapping-biopsy-for-gastric-intestinal-metaplasia-a-prospective-blinded-trial
#13
James Buxbaum, David Hormozdi, Mário Dinis-Ribeiro, Christianne Lane, Diogo Dias da Silva, Ara Sahakian, Preeth Jayaram, Pedro Pimentel Nunes, Daniel Shue, Michael Pepper, Daniel Cho, Loren Laine
BACKGROUND & AIMS: Gastric intestinal metaplasia (GIM) is a gastric cancer precursor. Narrow-band imaging (NBI) may improve detection of GIM. We compared detection of GIM with high-definition white-light (HD-WL) endoscopy, NBI, and mapping biopsies in a population with increased gastric cancer risk. METHODS: Patients undergoing upper endoscopy had HD-WL examination by one endoscopist, followed by NBI examination by a second endoscopist blinded to HD-WL findings...
March 30, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28353175/current-concepts-in-treatment-of-barrett-s-esophagus-with-and-without-dysplasia
#14
Francisco Schlottmann, Marco G Patti
BACKGROUND: Around 10-15% of patients with gastroesophageal reflux disease will develop Barrett's esophagus (BE). The development of novel endoscopic modalities has changed the management of BE in the last decade. AIM: The aim of this study was to review the current evidence for the treatment of BE with and without dysplasia. RESULTS: In patients with BE without dysplasia, antireflux surgery should not be suggested as a modality to prevent the malignant transformation of BE, but its indications should be the same as for other patients with gastroesophageal reflux...
March 28, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28342261/diagnostic-performance-of-the-confocal-laser-endomicroscopy-of-atrophy-and-gastric-intestinal-metaplasia-a-meta-analysis
#15
Tao Bai, Lei Zhang, Stuti Sharma, Yu Dong Jiang, Jing Xia, Huan Wang, Wei Qian, Jun Song, Xiao Hua Hou
AIM: The aim of this study was to systematically evaluate its diagnostic value for atrophy and gastric intestinal metaplasia. METHODS: Extensive study search was performed in PubMed and the Cochrane Library for endomicroscopy, gastric atrophy and gastric intestinal metaplasia. Sensitivity, specificity and diagnostic odds ratio to diagnose the gastric atrophy and intestinal metaplasia were pooled. A summary receiver operating curve was documented and the zone under the curve was calculated...
March 25, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28341758/high-salt-intake-is-associated-with-atrophic-gastritis-with-intestinal-metaplasia
#16
Ji Hyun Song, Young Sun Kim, Nam Ju Heo, Joo Hyun Lim, Sun Young Yang, Goh Eun Chung, Joo Sung Kim
BACKGROUND: Although several studies have investigated excessive salt intake as a risk factor for gastric precancerous lesions such as atrophic gastritis (AG) and intestinal metaplasia (IM), the evidence is insufficient to make conclusion. We evaluated the association between gastric precancerous lesions and salt intake. METHODS: From 2008 to 2015, the medical records of 728 subjects who underwent upper gastrointestinal endoscopy and sodium excretion in 24-hr urine tests were retrospectively reviewed...
March 24, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28336546/barrett-s-metaplasia-develops-from-cellular-reprograming-of-esophageal-squamous-epithelium-due-to-gastroesophageal-reflux
#17
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/28326664/the-corpus-predominant-gastritis-index-can-be-an-early-and-reversible-marker-to-identify-the-gastric-cancer-risk-of-helicobacter-pylori-infected-nonulcer-dyspepsia
#18
Hsiu-Chi Cheng, Yu-Ching Tsai, Hsiao-Bai Yang, Yi-Chun Yeh, Wei-Lun Chang, Hsin-Yu Kuo, Cheng-Chan Lu, Bor-Shyang Sheu
BACKGROUND: Corpus-predominant gastritis index (CGI) is an early histological marker to identify Helicobacter pylori-infected gastric cancer relatives at risk of cancer. This study validated whether CGI is more prevalent in H. pylori-infected nonulcer dyspepsia (NUD) subjects than in duodenal ulcer (DU) controls and whether it is reversible after H. pylori eradication or is correlated with noninvasive biomarkers. MATERIALS AND METHODS: In this longitudinal cohort study, 573 H...
March 22, 2017: Helicobacter
https://www.readbyqxmd.com/read/28322295/alterations-in-gastric-microbiota-after-h-pylori-eradication-and-in-different-histological-stages-of-gastric-carcinogenesis
#19
Tung Hiu Li, Youwen Qin, Pak Chung Sham, K S Lau, Kent-Man Chu, Wai K Leung
The role of bacteria other than Helicobacter pylori (HP) in the stomach remains elusive. We characterized the gastric microbiota in individuals with different histological stages of gastric carcinogenesis and after receiving HP eradication therapy. Endoscopic gastric biopsies were obtained from subjects with HP gastritis, gastric intestinal metaplasia (IM), gastric cancer (GC) and HP negative controls. Gastric microbiota was characterized by Illumina MiSeq platform targeting the 16 S rDNA. Apart from dominant H...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28321304/gastric-heterotopia-in-rectum-a-literature-review-and-its-diagnostic-pitfall
#20
Peyman Dinarvand, Ashley A Vareedayah, Nancy J Phillips, Christine Hachem, Jinping Lai
OBJECTIVES: The term heterotopia, in pathology, refers to the presence of normal tissues at foreign sites. Gastric heterotopia has been reported anywhere in the gastrointestinal tract. However, the presence of gastric heterotopia in the rectum is very rare. METHODS: We, here, report a rare case of a localized 2-cm area of cratered mucosa with heaped-up borders in the rectum of a 51-year-old, asymptomatic woman who underwent screening colonoscopy. RESULTS: Histologic examination of the biopsy from the lesional tissue in rectum demonstrated fragments of rectal mucosa co-mingling with oxyntic- and antral-type gastric mucosa...
2017: SAGE open medical case reports
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