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gastric intestinal metaplasia

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https://www.readbyqxmd.com/read/28531911/risk-factors-for-gastric-tumorigenesis-in-underlying-gastric-mucosal-atrophy
#1
Ji Hyun Song, Sang Gyun Kim, Eun Hyo Jin, Joo Hyun Lim, Sun Young Yang
Background/Aims: Atrophic gastritis is considered a premalignant lesion. We aimed to evaluate the risk factors for gastric tumorigenesis in underlying mucosal atrophy. Methods: A total of 10,185 subjects who underwent upper gastrointestinal endoscopy between 2003 and 2004 were enrolled in this retrospective cohort study. Follow-up endoscopy was performed between 2005 and 2014. Atrophic gastritis and intestinal metaplasia were assessed by endoscopy using the Kimura-Takemoto classification...
May 23, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28514409/-new-opportunities-for-the-prevention-of-gastric-cancer
#2
I G Maev, A N Kazyulin
The approvals and provisions of the Management of Helicobacter pylori infection-the Maastricht V/ Florence Consensus Report and those of the Kyoto Global Consensus Conference on H. pylori-associated gastritis, concerning with the primary and secondary prevention of gastric cancer (GC), unambiguously suggest that H. pylori infection is the most important risk factor of GC. Accordingly, the basis for the primary and secondary prevention of GC is the optimization of H. pylori eradication therapy. The clear direct relationship of the risk of GC to the severity and extent of atrophic gastritis, intestinal metaplasia and dysplasia and no reversal of intestinal metaplasia and dysplasia in the presence of H...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28469360/investigation-of-mucosal-pattern-of-gastric-antrum-using-magnifying-narrow-band-imaging-in-patients-with-chronic-atrophic-fundic-gastritis
#3
Yasushi Yamasaki, Noriya Uedo, Hiromitsu Kanzaki, Minoru Kato, Kenta Hamada, Kenji Aoi, Yusuke Tonai, Noriko Matsuura, Takashi Kanesaka, Takeshi Yamashina, Tomofumi Akasaka, Noboru Hanaoka, Yoji Takeuchi, Koji Higashino, Ryu Ishihara, Yasuhiko Tomita, Hiroyasu Iishi
BACKGROUND: Magnifying narrow-band imaging (M-NBI) can reportedly help predict the presence and distribution of atrophy and intestinal metaplasia in the gastric corpus. However, the micro-mucosal pattern of the antrum shown by M-NBI differs from that of the corpus. We studied the distribution and histology of the micro-mucosal pattern in the antrum based on magnifying endoscopy. METHODS: Endoscopic images of the greater curvature of the antrum were evaluated in 50 patients with chronic atrophic fundic gastritis (CAFG)...
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/28467793/the-different-pathogeneses-of-sporadic-adenoma-and-adenocarcinoma-in-non-ampullary-lesions-of-the-proximal-and-distal-duodenum
#4
Ayumi Niwa, Seiya Kuwano, Hiroyuki Tomita, Keita Kimura, Yukiya Orihara, Tomohiro Kanayama, Kei Noguchi, Kenji Hisamatsu, Takayuki Nakashima, Yuichiro Hatano, Akihiro Hirata, Tatsuhiko Miyazaki, Kazuhiro Kaneko, Takuji Tanaka, Akira Hara
Non-ampullary duodenal adenoma with activation of Wnt/β-catenin signalling is common in familial adenomatous polyposis (FAP) patients, whereas sporadic non-ampullary adenoma is uncommon. The adenoma-carcinoma sequence similar to colon cancer is associated with duodenal tumors in FAP, but not always in sporadic tumors. We obtained 37 non-ampullary duodenal tumors, including 25 adenomas and 12 adenocarcinomas, were obtained from biopsies and endoscopic resections. We performed immunohistochemistry for β-catenin, the hallmark of Wnt activation, and aldehyde dehydrogenase 1 (ALDH1), a putative cancer stem cell marker...
April 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28460480/htert-promotes-gastric-intestinal-metaplasia-by-upregulating-cdx2-via-nf-%C3%AE%C2%BAb-signaling-pathway
#5
Bai-Jun Chen, Shuo Zeng, Rui Xie, Chang-Jiang Hu, Su-Ming Wang, Yu-Yun Wu, Yu-Feng Xiao, Shi-Ming Yang
BACKGROUND: hTERT has been reported involved in the proliferation and metastasis of gastric cancer, but the role of hTERT in gastric intestinal metaplasia, a premalignant lesion of the gastric mucosa was unknown. The aim of the present study was to investigate the role of hTERT in GIM and the effect of hTERT on CDX2 expression in gastric cells. RESULTS: Experiments showed that expression of hTERT was significantly higher in GIM than in normal gastric mucosa. Moreover, hTERT increased the KLF4 level via NF-κB during GIM...
April 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28455161/outcomes-of-screening-gastroscopy-in-first-degree-relatives-of-patients-fulfilling-hereditary-diffuse-gastric-cancer-criteria
#6
Rachel S van der Post, Jolanda van Dieren, Anna Grelack, Nicoline Hoogerbrugge, Lizet E van der Kolk, Petur Snaebjornsson, Iris Lansdorp-Vogelaar, J Han van Krieken, Tanya M Bisseling, Annemieke Cats
BACKGROUND AND AIMS: The aim of this study was to determine the yield of endoscopic screening in first-degree relatives (FDR) of CDH1-negative hereditary diffuse gastric cancer (HDGC) patients. METHODS: Retrospective observational cohort study. In 2 expert centers in the Netherlands data were collected on FDR from families fulfilling the international HDGC criteria that underwent endoscopic screening. Extensive inspection of the stomach was performed by gastroscopy, taking random and/or targeted stomach biopsy specimens to identify diffuse-type gastric cancer...
April 25, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28453457/plasma-expression-of-the-intestinal-metaplasia-markers-cdh17-and-tff3-in-patients-with-gastric-cancer
#7
Boram Choi, Hyuk-Joon Lee, Jimin Min, Hwi-Nyeong Choe, Yun-Suk Choi, Young-Gil Son, Hye-Seong Ahn, Yun-Suhk Suh, James R Goldenring, Han-Kwang Yang
BACKGROUND: Few reliable blood markers are available for detecting gastric cancer, mainly owing to the heterogeneity of the cancer. OBJECTIVE: To establish gastric cancer diagnostic markers, we evaluated the levels of plasma cadherin 17 (CDH17) and trefoil factor 3 (TFF3), which are secretory proteins and known markers for intestinal metaplasia (IM), in patients with gastric cancer. METHOD: The protein expression level was analyzed in blood plasma samples from 111 gastric cancer patients and 44 healthy individuals, using a sandwich ELISA kit, followed by statistical analyses...
April 21, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28451845/reflux-esophagitis-and-its-role-in-the-pathogenesis-of-barrett-s-metaplasia
#8
REVIEW
Rhonda Frances Souza
Reflux esophagitis damages the squamous epithelium that normally lines the esophagus, and promotes replacement of the damaged squamous lining by the intestinal metaplasia of Barrett's esophagus, the precursor of esophageal adenocarcinoma. Therefore, to prevent the development of Barrett's metaplasia and esophageal adenocarcinoma, the pathogenesis of reflux esophagitis must be understood. We have reported that reflux esophagitis, both in a rat model and in humans, develops as a cytokine-mediated inflammatory injury (i...
April 27, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28449219/the-risk-of-gastric-cancer-in-patients-with-gastric-intestinal-metaplasia-in-5-year-follow-up
#9
R Pittayanon, R Rerknimitr, N Klaikaew, A Sanpavat, S Chaithongrat, V Mahachai, P Kullavanijaya, A Barkun
BACKGROUND: Gastric intestinal metaplasia (GIM) is the premalignant stage of gastric cancer; however, consensus on its management has not been established. AIM: To determine the risk factors for gastric cancer in a population of patients with GIM to guide the appropriate clinical recommendations in a low prevalence area for gastric cancer. METHODS: This was a retrospective cohort study. Ninety-one patients with GIM diagnosed between 2004 and 2014 were recruited for surveillance EGD every 6-12 months until a diagnosis of gastric cancer or completion of the planned 5-year follow-up duration...
April 27, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28445591/screening-endoscopy-finds-high-prevalence-of-helicobacter-pylori-and-intestinal-metaplasia-in-korean-american-with-limited-access-to-health-care
#10
Yanghee Woo, Carolyn E Behrendt, Garrick Trapp, Jae Geun Hyun, Tamas Gonda, Yuman Fong, Timothy Wang
BACKGROUND: Gastric cancer (GC) is the leading cause of cancer death among Korean Americans. Prevention and early detection is improved by screening. METHODS: Between September 2013 and March 2015, ethnic Koreans age 40 or older without history or symptoms of GC and without upper endoscopy (UE) during previous 3 years were enrolled. Participants were offered screening with GC risk assessment followed by UE with biopsies. RESULTS: Risk assessment was provided to 146 participants (age 55...
April 26, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28441455/gene-expression-study-and-pathway-analysis-of-histological-subtypes-of-intestinal-metaplasia-that-progress-to-gastric-cancer
#11
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
#12
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/28423364/increased-expression-of-deleted-in-malignant-brain-tumors-dmbt1-gene-in-precancerous-gastric-lesions-findings-from-human-and-animal-studies
#13
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
#14
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...
May 16, 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
#15
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
#16
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
#17
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/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
#18
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
#19
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
#20
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
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