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gastric intestinal metaplasia

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https://www.readbyqxmd.com/read/28791995/-morphological-and-immunohistochemical-features-of-severe-gastric-dysplasia-and-early-gastric-cancer
#1
L M Mikhaleva, A E Biryukov
AIM: to investigate the morphological and immunohistochemical features of severe gastric dysplasia (SGD) and early gastric cancer (EGC). MATERIAL AND METHODS: The fragments of gastric tumor tissue with adjacent mucosal portions from 50 patients aged from 34 to 79 years (mean age 63.8 years), which had been removed during organ-sparing endoscopic surgery, were histologically, histochemical, and immunohistochemically (IHC) examined. RESULTS: In EGC, there was a preponderance of intestinal-type cancer; the adjacent mucosal areas showed foci of SGD and colonic metaplasia in 100%...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/28771198/prevention-of-gastric-cancer-eradication-of-helicobacter-pylori-and-beyond
#2
REVIEW
Tetsuya Tsukamoto, Mitsuru Nakagawa, Yuka Kiriyama, Takeshi Toyoda, Xueyuan Cao
Although its prevalence is declining, gastric cancer remains a significant public health issue. The bacterium Helicobacter pylori is known to colonize the human stomach and induce chronic atrophic gastritis, intestinal metaplasia, and gastric cancer. Results using a Mongolian gerbil model revealed that H. pylori infection increased the incidence of carcinogen-induced adenocarcinoma, whereas curative treatment of H. pylori significantly lowered cancer incidence. Furthermore, some epidemiological studies have shown that eradication of H...
August 3, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28768706/the-prevalence-of-cancer-associated-autoantibodies-in-patients-with-gastric-cancer-and-progressive-grades-of-premalignant-lesions
#3
Irēna Meistere, Simone Werner, Pawel Zayakin, Karīna Siliņa, Undīne Rulle, Angelina Pismennaja, Daiga Šantare, Ilze Kikuste, Sergejs Isajevs, Marcis Leja, Limas Kupčinskas, Juozas Kupčinskas, Laimas Jonaitis, Chun-Ying Wu, Hermann Brenner, Aija Linē, Zane Kalniņa
BACKGROUND: Serum autoantibodies against tumor-associated antigens (TAA) are detectable in early stage gastric cancer patients; however, the time point during cancerogenesis when they appear in circulation is still obscure. METHODS: In this study, we developed a recombinant antigen microarray and analyzed the prevalence of autoantibodies against 102 TAAs in 829 gastric cancer patients and 929 healthy controls from Caucasian and Asian populations, as well as 100 patients with chronic atrophic gastritis and 775 individuals staged according to different grades of intestinal metaplasia...
August 2, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28765474/mucosal-microbiome-dysbiosis-in-gastric-carcinogenesis
#4
Olabisi Oluwabukola Coker, Zhenwei Dai, Yongzhan Nie, Guijun Zhao, Lei Cao, Geicho Nakatsu, William Kk Wu, Sunny Hei Wong, Zigui Chen, Joseph J Y Sung, Jun Yu
OBJECTIVES: We aimed to characterise the microbial changes associated with histological stages of gastric tumourigenesis. DESIGN: We performed 16S rRNA gene analysis of gastric mucosal samples from 81 cases including superficial gastritis (SG), atrophic gastritis (AG), intestinal metaplasia (IM) and gastric cancer (GC) from Xi'an, China, to determine mucosal microbiome dysbiosis across stages of GC. We validated the results in mucosal samples of 126 cases from Inner Mongolia, China...
August 1, 2017: Gut
https://www.readbyqxmd.com/read/28753702/probe-based-endomicroscopy-for-in-vivo-detection-of-gastric-intestinal-metaplasia-and-neoplasia-a-multicenter-randomized-controlled-trial
#5
Xiu-Li Zuo, Zhen Li, Chang-Qing Li, You-You Zheng, Li-Dong Xu, Jie Chen, Rong Lin, Jun Song, Chao-Hui Yu, Min Yue, Qi Zhou, Zhi-Yan Liu, Yan-Qing Li
Background and study aims Owing to the indistinctive endoscopic appearance of gastric intestinal metaplasia (GIM), gastric intraepithelial neoplasia (GIN), and early gastric cancer (EGC), a significant number of such lesions may be missed during surveillance endoscopy. The aim of this clinical trial was to assess the value of combined computed virtual chromoendoscopy (flexible spectral imaging color enhancement [FICE]) and probe-based confocal laser endomicroscopy (pCLE) for in vivo detection of GIM, GIN, and EGC...
July 28, 2017: Endoscopy
https://www.readbyqxmd.com/read/28747552/tenascin-c-and-fibronectin-in-normal-esophageal-mucosa-barrett-s-esophagus-dysplasia-and-adenocarcinoma
#6
Joni Leppänen, Sara Bogdanoff, Petri P Lehenkari, Juha Saarnio, Joonas H Kauppila, Tuomo J Karttunen, Heikki Huhta, Olli Helminen
BACKGROUND: Tenascin-C and fibronectin are adhesive glycoproteins modulating the structure of the extracellular matrix and cellular functions. Their expression and function in esophageal adenocarcinoma is poorly known. The aim of this study was to evaluate the expression of tenascin-C and fibronectin in esophageal adenocarcinoma and its precursor stages. RESULTS: Stromal tenascin-C and fibronectin expression were found in all evaluated lesion types. Expression of both molecules increased from gastric metaplasia towards adenocarcinoma (p<0...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28744336/oxidative-phosphorylation-system-in-gastric-carcinomas-and-gastritis
#7
René G Feichtinger, Daniel Neureiter, Tom Skaria, Silja Wessler, Timothy L Cover, Johannes A Mayr, Franz A Zimmermann, Gernot Posselt, Wolfgang Sperl, Barbara Kofler
Switching of cellular energy production from oxidative phosphorylation (OXPHOS) by mitochondria to aerobic glycolysis occurs in many types of tumors. However, the significance of this switching for the development of gastric carcinoma and what connection it may have to Helicobacter pylori infection of the gut, a primary cause of gastric cancer, are poorly understood. Therefore, we investigated the expression of OXPHOS complexes in two types of human gastric carcinomas ("intestinal" and "diffuse"), bacterial gastritis with and without metaplasia, and chemically induced gastritis by using immunohistochemistry...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28733737/surveillance-strategy-according-to-age-after-endoscopic-resection-of-early-gastric-cancer
#8
Hyo-Joon Yang, Sang Gyun Kim, Joo Hyun Lim, Ji Min Choi, Sooyeon Oh, Jae Yong Park, Seung Jun Han, Jung Kim, Hyunsoo Chung, Hyun Chae Jung
BACKGROUND: Whether surveillance strategy after curative endoscopic submucosal dissection (ESD) for early gastric cancer (EGC) differs in young patients is unclear. This study aimed to evaluate the risk of metachronous and extragastric recurrence in young patients with EGC after curative ESD. METHODS: We retrospectively enrolled 1237 consecutive patients who underwent curative ESD for EGC from 2005 to 2014 at a single tertiary hospital. The patients were divided into group 1 (<50 years of age, n = 86), group 2 (age 50-74, n = 985), or group 3 (≥75 years of age, n = 166)...
July 21, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28725964/toward-early-detection-of-helicobacter-pylori-associated-gastric-cancer
#9
Rachel Walker, Jan Poleszczuk, Jaime Mejia, Jae K Lee, Jose M Pimiento, Mokenge Malafa, Anna R Giuliano, Heiko Enderling, Domenico Coppola
BACKGROUND: Gastric cancer is typically diagnosed at a late stage, leading to poor prognoses. Helicobacter pylori is responsible for 70% of gastric cancers globally, and patients with this bacterial infection often present with early stages of the carcinogenic pathway such as inflammation or gastritis. Although many patients continue to progress to advanced-stage disease after antibacterial treatment, there are no follow-up screening protocols for patients with a history of H. pylori...
July 19, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28713064/novel-risk-stratification-for-metachronous-recurrence-after-curative-endoscopic-submucosal-dissection-for-early-gastric-cancer
#10
Hyo-Joon Yang, Sang Gyun Kim, Joo Hyun Lim, Ji Min Choi, Sooyeon Oh, Jae Yong Park, Seung Jun Han, Jung Kim, Hyunsoo Chung, Hyun Chae Jung
BACKGROUND AND AIMS: This study stratified the risk of developing metachronous gastric cancer (MGC) after curative endoscopic submucosal dissection (ESD) of early gastric cancer (EGC) to enable the customization of endoscopic surveillance for MGC. METHODS: A total of 1115 patients who underwent curative ESD based on the expanded criteria for differentiated EGC from 2005 to 2014 at a single tertiary hospital were enrolled in this retrospective cohort study. They were followed up with annual endoscopy for a median of 50...
July 13, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28711934/identification-of-aqp3-and-cd24-as-biomarkers-for-carcinogenesis-of-gastric-intestinal-metaplasia
#11
Haijian Zhao, Jianfei Wen, Xuqiang Dong, Ruji He, Cheng Gao, Weiming Zhang, Zhihong Zhang, Lizong Shen
Gastric intestinal metaplasia (GIM) is a precancerous gastric carcinoma (GC) lesion with pivotal roles in carcinogenesis. CD24, LGR5 and Ki67 are expressed in GIM; we previously demonstrated that aquaporin 3 (AQP3) is expressed in goblet cells and is positively correlated with GIM severity. However, the relationships of AQP3 with GIM classification and with other proteins, and their roles in the transition from GIM to gastric carcinoma (GC) remain unknown. Sixteen patients with intestinal-type GC were enrolled in this study...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28706423/risk-factors-for-metachronous-gastric-carcinoma-development-after-endoscopic-resection-of-gastric-dysplasia-retrospective-single-center-study
#12
Hee Seok Moon, Gee Young Yun, Ju Seok Kim, Hyuk Soo Eun, Sun Hyung Kang, Jae Kyu Sung, Hyun Yong Jeong, Kyu-Sang Song
AIM: To determine the gastric adenocarcinoma (GAC) occurrence rate and related factors, we evaluated the follow-up results of patients confirmed to have gastric dysplasia after endoscopic resection (ER). METHODS: We retrospectively analyzed the medical records, endoscopic examination records, endoscopic procedure records, and histological records of 667 cases from 641 patients who were followed-up for at least 12 mo, from among 1273 patients who were conformed to have gastric dysplasia after Endoscopic mucosal resection (EMR) or endoscopic submucosal dissection (ESD) of gastric mucosal lesions between January 2007 and August 2013 at the Chungnam National University Hospital...
June 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28702753/magnifying-nbi-patterns-of-gastric-mucosa-after-helicobacter-pylori-eradication-and-its-potential-link-to-the-gastric-cancer-risk
#13
Tomomitsu Tahara, Sayumi Tahara, Tetsuya Tuskamoto, Noriyuki Horiguchi, Dai Yoshida, Tomohiko Kawamura, Masaaki Okubo, Mitsuo Nagasaka, Yoshihito Nakagawa, Makoto Urano, Makoto Kuroda, Tomoyuki Shibata, Naoki Ohmiya
BACKGROUND: Gastric cancer develops after successful H. pylori eradication in patients with severe atrophic gastritis. We classified atrophic and non-atrophic mucosa of gastric body using magnifying NBI endoscopy in patients after successful H. pylori eradication. MATERIALS AND METHODS: One hundred and twenty-five patients after successful H. pylori eradication (median period after eradication: 36 months) were enrolled. Magnifying NBI patterns in the uninvolved gastric body were divided into the following: restored-small, round pits, accompanied with honeycomb-like subepithelial capillary networks; atrophic-well-demarcated oval or tubulovillous pits with clearly visible coiled or wavy vessels...
July 12, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28701149/the-prevalence-of-gastric-heterotopia-of-the-proximal-esophagus-is-underestimated-but-preneoplasia-is-rare-correlation-with-barrett-s-esophagus
#14
Ulrich Peitz, Michael Vieth, Matthias Evert, Jovana Arand, Albert Roessner, Peter Malfertheiner
BACKGROUND: The previously reported prevalence of gastric heterotopia in the cervical esophagus, also termed inlet patch (IP), varies substantially, ranging from 0.18 to 14%. Regarding cases with adenocarcinoma within IP, some experts recommend to routinely obtain biopsies from IP for histopathology. Another concern is the reported relation to Barrett's esophagus. The objectives of the study were to prospectively determine the prevalence of IP and of preneoplasia within IP, and to investigate the association between IP and Barrett's esophagus...
July 12, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28700998/a-decrease-of-histone-deacetylase-6-expression-caused-by-helicobacter-pylori-infection-is-associated-with-oncogenic-transformation-in-gastric-cancer
#15
Qing He, Guoqiang Li, Xin Wang, Shubin Wang, Jiang Hu, Lang Yang, Yuqi He, Yuanming Pan, Dedong Yu, Yun Wu
BACKGROUND: Histone deacetylase 6 (HDAC6) plays a role in the progression of many tumors. However, the relationship between the level of HDAC6 expression and gastric tumorigenesis is still unclear. Here, we illustrate the potential correlation between Helicobacter pylori (HP) infection and the variation of HDAC6 expression in different gastric lesions, as well as the clinical significance of HDAC6 expression in gastric cancer (GC) patients. MATERIALS AND METHODS: Between 2011 and 2016, 364 patients with different types of gastric lesions were enrolled in Baotou City Central Hospital...
July 13, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28685858/diagnostic-performance-of-routine-esophagogastroduodenoscopy-using-magnifying-endoscope-with-narrow-band-imaging-for-gastric-cancer
#16
Shoichi Yoshimizu, Yorimasa Yamamoto, Yusuke Horiuchi, Masami Omae, Toshiyuki Yoshio, Akiyoshi Ishiyama, Toshiaki Hirasawa, Tomohiro Tsuchida, Junko Fujisaki
OBJECTIVES: In Japan, an increase in the number of routine esophagogastroduodenoscopy procedures is expected because several studies have reported that endoscopy screenings have reduced gastric cancer mortality. Magnifying narrow-band imaging has been reported to be effective for accurate diagnosis of gastric abnormalities such as cancers, adenomas, and intestinal metaplasia. However, the efficacy of this method in routine esophagogastroduodenoscopy has not been clarified. METHODS: We divided 3,763 patients into two groups...
July 7, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28685609/osteopontin-polymorphism-increases-gastric-precancerous-intestinal-metaplasia-susceptibility-in-helicobacter-pylori-infected-male
#17
Wei-Lun Chang, Meng-Ying Lin, Hsin-Yu Kuo, Hsiao-Bai Yang, Hsiu-Chi Cheng, Cheng-Chan Lu, Bor-Shyang Sheu
AIM: Whether genetic polymorphisms of osteopontin (OPN) coding gene, SPP1, determine the risk of gastric precancerous intestinal metaplasia (IM) in Helicobacter pylori infected patients. PATIENTS & METHODS: Helicobacter pylori infected patients (100 with and 210 without IM) were recruited to evaluate the associations of SPP1 promoter polymorphisms with gastric IM and adjusted for age, sex and smoking. Gastric OPN expression and inflammation were evaluated by immunohistochemistry, and haemotoxylin and eosin stain...
July 2017: Future Oncology
https://www.readbyqxmd.com/read/28677291/editorial-the-risk-of-cancer-in-patients-with-gastric-intestinal-metaplasia-authors-reply
#18
EDITORIAL
R Pittayanon, A Barkun
No abstract text is available yet for this article.
August 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28677282/editorial-the-risk-of-cancer-in-patients-with-gastric-intestinal-metaplasia
#19
EDITORIAL
Ernst J Kuipers
No abstract text is available yet for this article.
August 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28668512/h-pylori-infection-increases-gastric-mucosal-cox2-and-mtor-expression-in-chronic-gastritis-implications-for-cancer-progression
#20
Dalia M Badary, Mohammed Zakaria Ali Abu Rahma, Ahmed M Ashmawy, Mohamed Z Hafez
BACKGROUND: Helicobacter Pylori is a Gram-negative bacterium that infects the human stomach and plays an important role in the pathogenesis of chronic gastritis. H. pylori associated chronic gastritis affects various molecular markers related to gastric cancer development. The aim of this study to assess the effect of H. pylori infection on gastric mucosa and to explore its role in gastric carcinogenesis via COX2 and mTOR mucosal expression. MATERIALS AND METHODS: This study comprised archival blocks from 60 dyspeptic patients who underwent gastric endoscopic biopsies for histopathological examination...
June 17, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
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