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intestinal metaplasia in gastric mucosa

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https://www.readbyqxmd.com/read/28206968/intratumoral-lactate-metabolism-in-barrett-s-esophagus-and-adenocarcinoma
#1
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...
February 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28206729/gut-microbiota-and-gastric-disease
#2
Dolores Sgambato, Agnese Miranda, Lorenzo Romano, Marco Romano
The gut microbiota may be considered a crucial "organ" of human body because of its role in the maintenance of the balance between health as well as disease. It is mainly located in the small bowel and colon, while, the stomach was long thought to be sterile in particular for its high acid production. In particular, stomach was considered "an hostile place" for bacterial growth until the identification of Helicobacter pylori (HP). Now, the stomach and its microbiota can be considered as two different "organs" that share the same place and they have an impact on each other...
15, 2017: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/28205007/long-term-evaluation-of-biliary-reflux-after-experimental-one-anastomosis-gastric-bypass-in-rats
#3
Matthieu Bruzzi, Henri Duboc, Caroline Gronnier, Dominique Rainteau, Anne Couvelard, Maude Le Gall, André Bado, Jean-Marc Chevallier
BACKGROUND: Controversy remains regarding biliary reflux after one-anastomosis gastric bypass (OAGB). The aim of this "pilot" study was to analyze biliary reflux and its potential long-term consequences on esogastric mucosae in OAGB-operated rats. METHODS: Diet-induced obese rats were subjected to OAGB (n = 10) or sham (n = 4) surgery and followed up for 16 weeks. Evolution of weight and glucose tolerance was analyzed. Bile acid concentration measurement, histological and qRT-PCR analysis were performed in the esogastric segments...
February 15, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28124157/impact-of-the-microbiota-and-gastric-disease-development-by-helicobacter-pylori
#4
Teresa Alarcón, Laura Llorca, Guillermo Perez-Perez
Microorganisms in humans form complex communities with important functions and differences in each part of the body. The stomach was considered to be a sterile organ until the discovery of Helicobacter pylori, but nowadays, it is possible to demonstrate that other microorganisms beyond H. pylori can colonize the gastric mucosa and that the diverse microbiota ecosystem of the stomach is different from the mouth and the esophagus, and also from the small intestine and large intestine. H. pylori seems to be the most important member of the gastric microbiota with the highest relative abundance when present, but when it is absent, the stomach has a diverse microbiota...
2017: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/28077338/10-day-bismuth-containing-quadruple-therapy-is-effective-as-first-line-therapy-for-helicobacter-pylori-related-chronic-gastritis-a-prospective-randomized-study-in-china
#5
Liangjing Wang, Zhenghua Lin, Shujie Chen, Jun Li, Chun Xiao Chen, Zhiming Huang, Bin Ye, Jin Ding, Wei Li, Lunpo Wu, Ying Jiang, Lina Meng, Qin Du, Jianmin Si
OBJECTIVES: To investigate the effectiveness of 10-day bismuth-containing quadruple (B-quadruple) treatment as first-line therapy in patients with Helicobacter pylori related chronic gastritis. METHODS: Randomized control trial conducted from Oct. 2011 to Dec. 2013 in Zhejiang, China, including patients with H. pylori-related chronic gastritis who were randomly given either 10-day omeprazole-based triple (OM-triple, omeprazole 20 mg twice daily, clarithromycin 500 mg twice daily and amoxicillin 1g twice daily), or 10-day B-quadruple therapy (OM-triple + bismuth subcitrate 120 mg four times daily)...
January 7, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28072871/atrophic-and-metaplastic-progression-in-the-background-mucosa-of-patients-with-gastric-adenoma
#6
Hee Kyong Na, Charles J Cho, Suh Eun Bae, Jeong Hoon Lee, Young Soo Park, Ji Yong Ahn, Do Hoon Kim, Kee Don Choi, Ho June Song, Gin Hyug Lee, Se Jin Jang, Hwoon-Yong Jung
BACKGROUND: In patients with adenoma, assessing premalignant changes in the surrounding mucosa is important for surveillance. This study evaluated atrophic and metaplastic progression in the background mucosa of adenoma or early gastric cancer (EGC) cases. METHODS: Among 146 consecutive patients who underwent endoscopic resection for intestinal-type gastric neoplasia, the adenoma group included 56 patients with low-grade dysplasia and the ECG group included 90 patients with high-grade dysplasia or invasive carcinoma...
2017: PloS One
https://www.readbyqxmd.com/read/28053963/expression-of-leucine-rich-repeat-containing-g-protein-coupled-receptor-5-and-cd44-potential-implications-for-gastric-cancer-stem-cell-marker
#7
Yoon Jin Choi, Nayoung Kim, Hye Seung Lee, Seon Mee Park, Ji Hyun Park, Hyuk Yoon, Cheol Min Shin, Young Soo Park, Jin-Wook Kim, Dong Ho Lee
BACKGROUND: The human leucine-rich repeat-containing G-protein coupled receptor (LGR) 5 and CD44 are one of the candidates for the marker of gastric cancer stem cells. We compared the expressions of two genes among control, dysplasia and cancer groups. METHODS: We compared the mRNA expression of LGR5, CD44 and CD44v8-10 and immunohistochemistry (IHC) of LGR5 and CD44 in gastric antral mucosa of 45 controls, 36 patients with gastric dysplasia, and 39 patients with early gastric cancer...
December 2016: Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28049442/analyzing-the-influence-of-gastric-intestinal-metaplasia-on-gastric-ulcer-healing-in-helicobacter-pylori-infected-patients-without-atrophic-gastritis
#8
COMPARATIVE STUDY
Li-Wei Chen, Liang-Che Chang, Chung-Ching Hua, Bor-Jen Hsieh, Shuo-Wei Chen, Rong-Nan Chien
BACKGROUND: Gastric epithelial hyper-proliferation was reported in patients with Helicobacter pylori (H. pylori)-infected gastric mucosa with intestinal metaplasia (IM) changes. In patients with gastric ulcer (GU) and IM, the GU may have a different healing rate in comparison to patients without IM. This study aimed to compare the difference in GU healing between H. pylori-infected patients with IM and those without IM. METHODS: We retrospectively analyzed patients at the Keelung Chung Gung Memorial Hospital during the period from March 2005 to January 2011...
January 3, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28044300/a-mimicker-of-gallbladder-carcinoma-cystic-gastric-heterotopia-with-intestinal-metaplasia
#9
Gonca Özgün, Şaduman Balaban Adim, Nesrin Uğraş, Sadık Kiliçturgay
Heterotopic gastric mucosa in the gallbladder is an unusual entity and is usually clinically silent. We report a 75-year-old female patient who presented with intermittent upper abdomial pain radiating to the back. Abdominal imaging studies showed a sessile polypoid lesion and a gallstone in the gallbladder. Gallbladder carcinoma was suspected and cholecystectomy performed. Intraoperative frozen section examination suggested mucinous tumor, suspicious for malignancy. However, the permanent sections revealed aberrant gastric tissue consisted of gastric pyloric and fundic glands of heterotopic gastric mucosa with intestinal metaplasia in the gallbladder...
2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28038714/gastric-mucosal-status-susceptible-to-lanthanum-deposition-in-patients-treated-with-dialysis-and-lanthanum-carbonate
#10
Shinichi Ban, Syunji Suzuki, Kenji Kubota, Susumu Ohshima, Hideaki Satoh, Hiroki Imada, Yoshihiko Ueda
Lanthanum carbonate is a popular chemical which is administered for patients with end-stage kidney disease to reduce the absorption of phosphate, and lanthanum deposition in the gastroduodenal mucosa has recently been reported. The aim of this study was to assess whether any histologic changes of the gastric mucosa are related to the deposition of lanthanum. Twenty-four patients who revealed the histology of lanthanum deposition on gastroduodenal biopsy between 2011 and 2014 were included in the study, and their clinical records and gastroduodenal biopsies obtained from 2011 to 2015 were reviewed, adding the review of gastroduodenal biopsies before 2011 if possible...
February 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28003849/conifer-green-needle-complex-in-patients-with-precancerous-gastric-lesions-an-observational-pilot-study
#11
Vladimir Bespalov, Alexander Sherbakov, Viktor Novik, Valentin Kalinovsky, Kamran Shamsi, Vagif Soultanov
Objectives. Helicobacter pylori infection is common and can lead to precancerous gastric lesions. Standard antibiotic therapy has a failure rate of more than 25% from antibiotic resistance. The primary aim of this observational pilot study was to test the feasibility of a large-scale clinical trial of Conifer Green Needle Complex (CGNC) to treat precancerous gastric lesions. Secondary aims were to investigate H. pylori infection, stomach function, and histopathology of the gastric mucosa. Methods. A tablet form of CGNC (extracted from Pinus sylvestris and Picea abies (L) Karst) was prescribed to 26 patients with precancerous gastric lesions (two tablets, 100 mg CGNC/tablet, three times per day for six months)...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27999692/polypoid-dysplasia-in-barrett-s-esophagus-diagnosis-management-and-very-different-outcomes-in-two-consecutive-cases
#12
Megan Murphy, Christina Tofani, Kunjal Gandhi, Anthony Infantolino
Background. Barrett's esophagus is associated with an increased risk of adenocarcinoma. Dysplasia in Barrett's esophagus is a precursor to adenocarcinoma. Rarely, dysplastic polypoid lesions are superimposed on Barrett's esophagus. Most reported cases of polypoid dysplasia in Barrett's esophagus have been advanced on presentation and treated with esophagectomy. We describe two cases of polypoid changes in Barrett's esophagus and treatment with polypectomy followed by radiofrequency ablation. Cases. A 75 yo male presented with esophageal polyps, which on biopsy showed gastric cardia/foveolar mucosa with focal intestinal metaplasia without dysplasia...
2016: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/27917345/cholecystectomy-and-duodenogastric-reflux-interacting-effects-over-the-gastric-mucosa
#13
Erdinc Mercan, Ugur Duman, Deniz Tihan, Evren Dilektasli, Kazim Senol
AIMS: To evaluate association between duodenogastric reflux and early gastric mucosal changes before and after the cholecystectomy procedure. MATERIALS AND METHODS: Patients were evaluated with preoperative and postoperative endoscopy and endoscopic biopsy. Demographic and clinical characteristics, histological parameters, presence of duodenogastric reflux, and Updated Sydney scores were noted. RESULTS: A total of fifty patients who obeyed the follow-up were enrolled into the study...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27913994/sox2-inhibition-promotes-promoter-demethylation-of-cdx2-to-facilitate-gastric-intestinal-metaplasia
#14
Haijing Niu, Yuchen Jia, Tao Li, Bingzhong Su
BACKGROUND: Gastric intestinal metaplasia (IM) is regarded as a premalignant lesion, conferring risks for gastric cancer development. An intestinal transcription factor, CDX2, plays a vital role in establishing and maintaining IM. SOX2, an HMG-box transcription factor, is expressed in normal gastric mucosa and downregulated in IM. Therefore, it is important to elucidate the mutual interaction of SOX2 and CDX2 in gastric IM. AIMS: This study aims to evaluate the negative correlation between SOX2 and CDX2 in mRNA expression and promoter methylation and to illuminate the effect of SOX2 on the promoter methylation of CDX2...
December 2, 2016: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/27833379/pathophysiological-and-clinical-aspects-of-gastric-hyperplastic-polyps
#15
REVIEW
Adam Roman Markowski, Agnieszka Markowska, Katarzyna Guzinska-Ustymowicz
Gastric polyps become a major clinical problem because of high prevalence and tendency to malignant transformation of some of them. The development of gastric hyperplastic polyps results from excessive proliferation of foveolar cells accompanied by their increased exfoliation, and they are macroscopically indistinguishable from other polyps with lower or higher malignant potential. Panendoscopy allows detection and differentiation of gastric polyps, usually after obtaining histopathological biopsy specimens...
October 28, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27771376/clinicopathologic-characteristics-of-invasive-gastric-helicobacter-pylori
#16
Jonathan Dudley, Tad Wieczorek, Martin Selig, Hoiwan Cheung, Jeanne Shen, Robert Odze, Vikram Deshpande, Lawrence Zukerberg
Helicobacter pylori organisms have been observed deep within the stomach mucosa with an "intracellular" appearance, though the clinicopathologic characteristics of such cases remain poorly understood. We analyzed eighteen cases of deep mucosal H. pylori and associated clinical (sex, age, history of H. pylori infection, or proton pump inhibitor (PPI) use, medications, smoking, alcohol use, co-morbidities, treatment response treatment) and pathological (presence of lymphoid aggregates, intestinal metaplasia, PPI effect, active and/or chronic inflammation, quantity of invasive versus surface H...
October 19, 2016: Human Pathology
https://www.readbyqxmd.com/read/27770584/linked-color-imaging-enhances-gastric-cancer-in-gastric-intestinal-metaplasia
#17
LETTER
Shoko Ono, Satoshi Abiko, Mototsugu Kato
No abstract text is available yet for this article.
October 22, 2016: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/27766003/dynamics-of-sox2-and-cdx2-expression-in-barrett-s-mucosa
#18
Rita Barros, Daniela Pereira, Catarina Callé, Vânia Camilo, Ana Isabel Cunha, Leonor David, Raquel Almeida, António Dias-Pereira, Paula Chaves
Barrett's esophagus (BE) is the replacement of the normal esophageal squamous epithelium by a columnar lining epithelium. It is a premalignant condition for the development of adenocarcinoma of the esophagus and esophagogastric junction. BE is associated with gastroesophageal reflux which might change the expression profile of key transcription factors involved in the establishment of tissue differentiation, namely, SOX2 (associated with esophageal and gastric differentiation) and CDX2 (associated with intestinal differentiation)...
2016: Disease Markers
https://www.readbyqxmd.com/read/27708180/mid-esophagus-columnar-metaplasia-what-is-the-biopathogenic-pathway
#19
Inês Rolim, Rita Vale Rodrigues, António Bettencourt, Rita Barros, Vânia Camilo, António Dias Pereira, Raquel Almeida, Paula Chaves
We report a case of metaplastic columnar epithelium in the mid-esophagus in a patient with history of caustic ingestion. A cardiac-type gastric phenotype, with early signs of intestinalization, was confirmed by immunohistochemistry studies (MUC5AC, MUC6, SOX2, and CDX2). Nonmetaplastic mucosa had histologic evidence of gastroesophageal reflux. In this case, esophageal reepithelization seems to have been modulated by acidic gastroesophageal reflux, which might activate transcription factors leading to phenotypic reprogramming of the regenerative epithelium...
October 5, 2016: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27652306/helicobacter-pylori-negative-intestinal-type-gastric-adenoma-successfully-treated-by-endoscopic-submucosal-dissection-a-case-report
#20
Yoshiya Kobayashi, Yoshinori Komazawa, Makoto Nagaoka, Yoshiko Takahashi, Mika Yuki, Toshihiro Shizuki, Toru Nabika
A 49-year-old woman underwent an esophagogastroduodenoscopy as part of a health check at our hospital. Endoscopic observation revealed a flat elevated lesion 6 mm in diameter in the gastric antrum (Paris Classification type IIa). Magnifying endoscopy using narrow-band imaging showed a slightly irregular micro-surface pattern with round and oval pits, as well as a regular micro-vascular pattern without a demarcation line. Atrophy and intestinal metaplasia were not recognized in the background gastric mucosa...
September 2016: Endoscopy International Open
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