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intestinal metaplasia in gastric mucosa

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https://www.readbyqxmd.com/read/27917345/cholecystectomy-and-duodenogastric-reflux-interacting-effects-over-the-gastric-mucosa
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
https://www.readbyqxmd.com/read/27592118/risk-factors-of-type-1-gastric-neuroendocrine-neoplasia-in-patients-with-chronic-atrophic-gastritis-a-retrospective-multicentre-study
#9
Davide Campana, Davide Ravizza, Piero Ferolla, Antongiulio Faggiano, Franco Grimaldi, Manuela Albertelli, Claudio Ricci, Donatella Santini, Nicole Brighi, Nicola Fazio, Annamaria Colao, Diego Ferone, Paola Tomassetti
The aim of this retrospective study was to evaluate the presence of risk factors for a type 1 gastric neuroendocrine neoplasia in a large cohort of patients with chronic atrophic gastritis. The study design consisted of an Italian multicentre, retrospective analysis. The study included all consecutive patients with chronic atrophic gastritis with or without type 1 gastric neuroendocrine neoplasias followed at the participating centres. Two hundred and twenty-nine patients with chronic atrophic gastritis were enroled at the participating centres...
September 3, 2016: Endocrine
https://www.readbyqxmd.com/read/27558191/case-of-gastric-intestinal-metaplasia-in-an-old-patient-with-previous-gastric-surgery
#10
Firas Kadurei, Mohamed Alboraie
An 87-year-old woman with multiple medical disorders presented with dyspeptic symptoms of long duration. She has a history of peptic ulcer disease for which she has partial gastrectomy (Billroth I) in the past. Oesophagogastroduodenoscopy (OGD) was performed which revealed erythematous mucosa in the lower part of the gastric remnant with areas of whitish mucosal patches in the distal stomach close to the gastroduodenal anastomosis. Biopsies were taken from the whitish mucosal patches and sent for histopathological examination...
August 24, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27556076/therapeutic-or-spontaneous-helicobacter-pylori-eradication-can-obscure-magnifying-narrow-band-imaging-of-gastric-tumors
#11
Masaaki Kobayashi, Satoru Hashimoto, Ken-Ichi Mizuno, Manabu Takeuchi, Yuichi Sato, Gen Watanabe, Yoichi Ajioka, Motoi Azumi, Kouhei Akazawa, Shuji Terai
BACKGROUND AND STUDY AIMS: We previously reported that narrow-band imaging with magnifying endoscopy (NBI-ME) revealed a unique "gastritis-like" appearance in approximately 40 % of early gastric cancers after Helicobacter pylori eradication. Because rates of gastric cancer are increasing in patients with non-persistent infection of H. pylori, we aimed to clarify contribution factors to obscure tumors after therapeutic or spontaneous eradication. PATIENTS AND METHODS: NBI-ME findings were examined retrospectively in 194 differentiated-type adenocarcinomas from H...
June 2016: Endoscopy International Open
https://www.readbyqxmd.com/read/27523981/loss-of-trefoil-factor-2-from-pancreatic-duct-glands-promotes-formation-of-intraductal-papillary-mucinous-neoplasms-in-mice
#12
Junpei Yamaguchi, Mari Mino-Kenudson, Andrew S Liss, Sanjib Chowdhury, Timothy C Wang, Carlos Fernández-Del Castillo, Keith D Lillemoe, Andrew L Warshaw, Sarah P Thayer
BACKGROUND & AIMS: Little is known about the origin of pancreatic intraductal papillary mucinous neoplasms (IPMN). Pancreatic duct glands (PDGs) are gland-like outpouches budding off the main pancreatic ducts that function as a progenitor niche for the ductal epithelium; they express gastric mucins and have characteristics of side-branch IPMNs. We investigated whether PDGs are a precursor compartment for IPMNs and the role of Trefoil factor family 2 (TFF2)-a protein expressed by PDGs and the gastric mucosa that are involved in epithelial repair and tumor suppression...
December 2016: Gastroenterology
https://www.readbyqxmd.com/read/27499580/the-expression-of-igf-1r-in-helicobacter-pylori-infected-intestinal-metaplasia-and-gastric-cancer
#13
Noriko Nakajima, Karina Kozu, Shun Kobayashi, Ryu Nishiyama, Rie Okubo, Yuichi Akai, Mitsuhiko Moriyama, Noriko Kinukawa
Overexpression of IGF-1R has been demonstrated in gastrointestinal cancers, and its expression is reported as the result of the loss of tumor suppressors. IL-16 is involved in the pathophysiological process of chronic inflammatory diseases. The aim of this study is to determine the changes in the expression of IGF-1R in intestinal metaplasia (IM) and gastric cancer (GC) as well as the effect of Helicobacter pylori (H. pylori) and IL-16 on cell proliferation and IGF-1R expression in gastric cells. AGS cells were incubated with combinations of IL-16 and H...
July 2016: Journal of Clinical Biochemistry and Nutrition
https://www.readbyqxmd.com/read/27462194/slow-growing-early-adenocarcinoma-arising-from-traditional-serrated-adenoma-in-the-duodenum
#14
Yoon Kyoo Park, Woo Jin Jeong, Gab Jin Cheon
Serrated polyps are classified into 3 distinct types: hyperplastic polyp, sessile serrated adenoma, or transitional serrated adenoma. A serrated adenoma is a precursor lesion for colorectal carcinoma. Serrated polyps are commonly found in the colorectum but have rarely been described in other parts of the gastrointestinal tract. Serrated adenomas in the small intestine may represent aggressive lesions with high malignant potential, according to some reports. A 66-year-old man with no significant medical history underwent esophagogastroduodenoscopy (EGD) for general examination...
May 2016: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/27447751/troy-is-expressed-in-human-stomach-mucosa-and-a-novel-putative-prognostic-marker-of-intestinal-type-gastric-cancer
#15
Franziska Wilhelm, Christine Böger, Sandra Krüger, Hans-Michael Behrens, Christoph Röcken
Epithelial stem cells of gastrointestinal tissues are characterized and controlled by an active Wnt signaling. Recently, the Wnt target gene Troy has been proposed as a neoplastic marker in the murine intestine. In this study, we explored the putative tumor biological significance of Troy in humans by using immunohistochemistry (104 cases), quantitative RT-PCR (50 cases) and cell culture experiments (MKN45, MKN74). In the non-neoplastic gastric mucosa, Troy was expressed by Muc5AC-positive foveolar epithelium, parietal cells, chief cells and cells of the intestinal metaplasia...
July 18, 2016: Oncotarget
https://www.readbyqxmd.com/read/27301112/-clinical-and-endoscopic-morphologic-and-immunohistochemical-features-of-gastric-ulcer-in-h-pylori-infected-individuals-receiving-cytotoxic-therapy
#16
O V Sazonova, I L Davydkin, A M Osadchuk, T A Gritsenko
THE PURPOSE OF THE STUDY: To determine the prognostic significance of the expression of molecules of PCNA, Bcl-2, NF-Kb and tachykinins (substance P, neurokinin A) in patients with gastric ulcer (CU) receiving cytotoxic therapy. MATERIALS AND METHODS: Total surveyed 90 patients divided into 3. equal groups. The first comparison group consisted of patients with chronic atrophic H. pylori-associated gastritis (CAG) (30 pers.). A second control group consisted of patients with gastric ulcer (30 pers...
2016: Experimental & Clinical Gastroenterology
https://www.readbyqxmd.com/read/27284322/effect-of-helicobacter-pylori-on-nfkb1-p38%C3%AE-and-tnf-%C3%AE-mrna-expression-levels-in-human-gastric-mucosa
#17
Henrique Sulzbach Sulzbach DE Oliveira, Vanderlei Biolchi, Helouise Richardt Richardt Medeiros, Daiane Bizerra Gandor Bizerra Gandor Jantsch, Luciana Knabben Knabben DE Oliveira Becker Delving, Roberto Reckziegel, Márcia Inês Goettert, Ilma Simoni Brum, Adriane Pozzobon
Helicobacter pylori infects ~50% of the world population, causing chronic gastritis and other forms of cellular damage. The present study assessed the influence of H. pylori on the mRNA expression levels of nuclear factor-κB1 (NFKB1), p38α and tumor necrosis factor-α (TNF-α) in human gastric mucosa in a southern Brazilian population. Human gastric tissue was collected by upper endoscopy and H. pylori diagnosis was performed using a rapid urease test and histological analysis. Total RNA was extracted and purified for subsequent cDNA synthesis and analysis by quantitative polymerase chain reaction (qPCR)...
June 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27182167/correlation-between-helicobacter-pylori-associated-gastric-diseases-and-colorectal-neoplasia
#18
Ying Qing, Min Wang, Ying-Min Lin, Dong Wu, Jing-Yu Zhu, Lang Gao, Yan-Yan Liu, Teng-Fei Yin
AIM: To explore the correlation between Helicobacter pylori (H. pylori)-associated gastric diseases and colorectal neoplasia. METHODS: Patients included in this study underwent a colonoscopy and esophago-gastro-duodenoscopy (EGD) along with histopathological measurement between March 2012 and March 2015 at Qi-Lu Hospital of Shandong University, who also had results of H. pylori detection. A total of 233 cases were selected. Demographic data, H. pylori infection status (including results of rapid urease tests and gastric mucosa pathological examinations) and histopathological examination results of gastric and colorectal mucosa were gathered and analyzed...
May 14, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27173780/telomere-length-shortening-in-gastric-mucosa-is-a-field-effect-associated-with-increased-risk-of-gastric-cancer
#19
Tomomitsu Tahara, Tomoyuki Shibata, Tomohiko Kawamura, Noriyuki Horiguchi, Masaaki Okubo, Naoko Nakano, Takamitsu Ishizuka, Mitsuo Nagasaka, Yoshihito Nakagawa, Naoki Ohmiya
Telomere shortening occurs in many organs and tissues and is accelerated by oxidative injury and rapid cell turnover. Short telomeres initiate chromosomal instability and may eventually contribute to tumorigenesis. To evaluate telomere length as potential biomarker for gastric cancer (GC) risk, we measured average telomere length using quantitative real-time PCR in GC tissues and in non-neoplastic mucosa from patients with GC and without GC. We obtained of 217 GC patients matched biopsies from the GC and adjacent tissues as well as gastric biopsies of 102 subjects without GC...
July 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27160432/prevalence-of-helicobacter-pylori-in-gastric-hyperplastic-polyps
#20
Bela Horvath, Rish K Pai
Hyperplastic polyps of the stomach are routinely encountered during upper endoscopy and often arise in the setting of abnormal surrounding mucosa, particularly Helicobacter pylori, autoimmune gastritis, and reactive gastropathy. Not infrequently gastroenterologists fail to biopsy the surrounding mucosa, thus determining the underlying etiology of the gastric hyperplastic polyp can be difficult. Recently, the Rodger C. Haggitt Gastrointestinal Pathology Society published guidelines on the use of special stains...
May 8, 2016: International Journal of Surgical Pathology
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