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Intestinal metaplasia

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https://www.readbyqxmd.com/read/28647684/dynamics-of-helicobacter-pylori-infection-as-a-determinant-of-progression-of-gastric-precancerous-lesions-16-year-follow-up-of-an-eradication-trial
#1
Robertino M Mera, Luis E Bravo, M Constanza Camargo, Juan C Bravo, Alberto G Delgado, Judith Romero-Gallo, Maria C Yepez, José L Realpe, Barbara G Schneider, Douglas R Morgan, Richard M Peek, Pelayo Correa, Keith T Wilson, M Blanca Piazuelo
OBJECTIVE: To evaluate the long-term effect of cumulative time exposed to Helicobacter pylori infection on the progression of gastric lesions. DESIGN: 795 adults with precancerous gastric lesions were randomised to receive anti-H. pylori treatment at baseline. Gastric biopsies were obtained at baseline and at 3, 6, 12 and 16 years. A total of 456 individuals attended the 16-year visit. Cumulative time of H. pylori exposure was calculated as the number of years infected during follow-up...
June 24, 2017: Gut
https://www.readbyqxmd.com/read/28643319/-progress-of-the-application-of-optical-coherence-tomography-in-gastrointestinal-tumor-surgery
#2
Yongsheng Li, Hao Liu, Haipeng Huang, Yu Zhu, Haijun Deng, Jiang Yu, Site Luo, Li Huo, Li Lin, Huikai Xie, Guoxin Li
Optical coherence tomography (OCT) is a real-time, cross-sectional optical imaging technology. It is analogous to ultrasonography, except that OCT uses light waves instead of sound waves, and can provide three-dimensional morphological images of living tissues with a micrometer resolution. Through the use of endoscopes, needles, catheters and laparoscopes, OCT has demonstrated tremendous imaging potential in tumor surgery. The current studies suggest that OCT has potential for clinical applications in the following fields of gastrointestinal tumor surgery: (1) Early tumor detection and diagnosis: OCT can distinguish differences between polyp tissue, normal tissue and malignant tissue...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28638837/validation-of-a-novel-immunoline-assay-for-patient-stratification-according-to-virulence-of-the-infecting-helicobacter-pylori-strain-and-eradication-status
#3
Luca Formichella, Laura Romberg, Hannelore Meyer, Christian Bolz, Michael Vieth, Michael Geppert, Gereon Göttner, Christina Nölting, Wolfgang Schepp, Arne Schneider, Kurt Ulm, Petra Wolf, Ingrid Lisanne Holster, Ernst J Kuipers, Bernd Birkner, Erwin Soutschek, Markus Gerhard
Helicobacter pylori infection shows a worldwide prevalence of around 50%. However, only a minority of infected individuals develop clinical symptoms or diseases. The presence of H. pylori virulence factors, such as CagA and VacA, has been associated with disease development, but assessment of virulence factor presence requires gastric biopsies. Here, we evaluate the H. pylori recomLine test for risk stratification of infected patients by comparing the test score and immune recognition of type I or type II strains defined by the virulence factors CagA, VacA, GroEL, UreA, HcpC, and gGT with patient's disease status according to histology...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28622182/reflux-associated-cholecystopathy-analysis-of-76-gallbladders-from-patients-with-supra-oddi-union-of-the-pancreatic-duct-and-common-bile-duct-pancreatobiliary-maljunction-elucidates-a-specific-diagnostic-pattern-of-mucosal-hyperplasia-as-a-prelude-to-carcinoma
#4
Takashi Muraki, Bahar Memis, Michelle D Reid, Takeshi Uehara, Tetsuya Ito, Osamu Hasebe, Shinji Okaniwa, Naoto Horigome, Takeshi Hisa, Pardeep Mittal, Alexa Freedman, Shishir Maithel, Juan M Sarmiento, Alyssa Krasinskas, Jill Koshiol, Volkan Adsay
Pancreaticobiliary maljunction (PBM) is the anomalous union of the main pancreatic duct and common bile duct outside the Oddi-sphincter, allowing the reflux of pancreatic juice to the gallbladder. There is only limited awareness and understanding of the pathologic correlates of this condition, mostly from Japan; this entity is largely unrecognized in the West. In this study, 76 gallbladders from patients with PBM (64 from Japan; 12 from the United States) were analyzed and contrasted with 66 from non-PBM patients...
June 15, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28611525/clinical-significance-of-expression-of-proliferating-cell-nuclear-antigen-and-e-cadherin-in-gastric-carcinoma
#5
Lin Hu, Hong-Lang Li, Wei-Feng Li, Jun-Min Chen, Jian-Tao Yang, Jun-Jing Gu, Lin Xin
AIM: to investigate the expression of proliferating cell nuclear antigen (PCNA) and E-cadherin in gastric carcinoma and to analyze their clinical significance. METHODS: A total of 146 patients were selected for this study, including 38 patients with intestinal metaplasia, 42 with dysplasia, and 66 with primary gastric cancer. In addition, 40 patients with normal gastric tissues were selected as controls. The expression of PCNA and E-cadherin was detected by immunohistochemistry...
May 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28587343/alteration-of-stomach-microbiota-compositions-in-the-progression-of-gastritis-induces-nitric-oxide-in-gastric-cell
#6
Tianyi Dong, Qiang Feng, Fengyan Liu, Lap Kam Chang, Xiangyu Zhou, Mingyong Han, Xingsong Tian, Ning Zhong, Shili Liu
Atrophic gastritis is considered to be an antecedent to intestinal metaplasia and gastric cancer. A previous study identified that Helicobacter pylori was absent at the severe atrophic gastritis stage, and alterations in the gastric microbial composition resembled those in gastric cancer. To explore the role of the bacteria absence of H. pylori in gastric carcinogenesis, in the current study, we compared the microbiota of clinically collected H. pylori-free gastric fluids from 30 patients with non-atrophic gastritis (N) and 22 patients with severe atrophic gastritis (S)...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28584243/nkx6-3-regulates-reactive-oxygen-species-production-by-suppressing-nf-kb-and-dnmt1-activities-in-gastric-epithelial-cells
#7
Jung Hwan Yoon, Olga Kim, Suk Woo Nam, Jung Young Lee, Won Sang Park
NKX6.3 plays an important role in gastric epithelial differentiation and also acts as a gastric tumor suppressor. The specific aim of this study was to determine whether NKX6.3 contributes to gastric mucosal barrier function by regulating reactive oxygen species (ROS) production. NKX6.3 reduced ROS production and regulated expression of anti-oxidant genes, including Hace1. In addition, NKX6.3 reduced DNMT1 expression and activity by down-regulating NF-kB family gene transcription. Silencing of Hace1 recovered ROS production, whereas knock-down of DNMT1 and NF-kB reduced ROS production and induced Hace1 expression by hypomethylating its promoter region...
June 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28583825/a-summary-of-the-2016-james-w-freston-conference-of-the-american-gastroenterological-association-intestinal-metaplasia-in-the-esophagus-and-stomach-origins-differences-similarities-and-significance
#8
Stuart J Spechler, Juanita L Merchant, Timothy C Wang, Parakrama Chandrasoma, James G Fox, Robert M Genta, James R Goldenring, Yoku Hayakawa, Ernst J Kuipers, Pauline K Lund, Frank McKeon, Jason Mills, Robert D Odze, Richard M Peek, Thai Pham, Jianwen Que, Anil K Rustgi, Nicholas J Shaheen, Ramesh A Shivdasani, Rhonda Souza, Peter Storz, Andrea Todisco, David H Wang, Nicholas A Wright
No abstract text is available yet for this article.
June 2, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28579538/late-recurrence-of-barrett-s-esophagus-after-complete-eradication-of-intestinal-metaplasia-is-rare-final-report-from-ablation-in-intestinal-metaplasia-containing-dysplasia-trial
#9
Cary C Cotton, W Asher Wolf, Bergein F Overholt, Nan Li, Charles J Lightdale, Herbert C Wolfsen, Sarina Pasricha, Kenneth K Wang, Nicholas J Shaheen
BACKGROUND & AIMS: The goal of treatment for Barrett's esophagus (BE) with dysplasia is complete eradication of intestinal metaplasia (CEIM). The long-term durability of CEIM has not been well characterized, so the frequency and duration of surveillance are unclear. We report results from a 5-year follow-up analysis of patients with BE and dysplasia treated by radiofrequency ablation (RFA) in the randomized controlled Ablation of Intestinal Metaplasia Containing Dysplasia (AIM) trial...
June 1, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28577772/care-of-the-postablation-patient-surveillance-acid-suppression-and-treatment-of%C3%A2-recurrence
#10
REVIEW
Leila Kia, Srinadh Komanduri
Endoscopic eradication therapy is effective and durable for the treatment of Barrett's esophagus (BE), with low rates of recurrence of dysplasia but significant rates of recurrence of intestinal metaplasia. Identified risk factors for recurrence include age and length of BE before treatment and may also include presence of a large hiatal hernia, higher grade of dysplasia before treatment, and history of smoking. Current guidelines for surveillance following ablation are limited, with recommendations based on low-quality evidence and expert opinion...
July 2017: Gastrointestinal Endoscopy Clinics of North America
https://www.readbyqxmd.com/read/28577770/radiofrequency-ablation-of-barrett-s-esophagus-efficacy-complications-and-durability
#11
REVIEW
Kavel Visrodia, Liam Zakko, Kenneth K Wang
In the last decade, radiofrequency ablation in combination with endoscopic mucosal resection has simplified and improved the treatment of Barrett's esophagus. These treatments not only reduced the progression of dysplastic Barrett's esophagus to esophageal adenocarcinoma but also decreased treatment-related complications. More recent data from larger series with extended follow-up periods are emerging to refine expectations in patients treated with radiofrequency ablation. Although most patients achieve eradication of neoplasia and intestinal metaplasia, in the long-term a substantial portion of patients develop recurrent disease...
July 2017: Gastrointestinal Endoscopy Clinics of North America
https://www.readbyqxmd.com/read/28576397/the-contribution-of-clinical-and-pathological-predisposing-factors-to-severe-gastro-duodenal-lesions-in-patients-with-long-term-low-dose-aspirin-and-proton-pump-inhibitor-therapy
#12
Anca Negovan, Mihaela Iancu, Valeriu Moldovan, Kinga Sàrkàny, Simona Bataga, Simona Mocan, Ioan Țilea, Claudia Banescu
BACKGROUND: Preventive strategies developed to avoid the complications of antiplatelet therapies recommend the evaluation of risk factors for gastrointestinal events and indicated gastroprotective strategies. AIM: We aimed to assess the impact of predisposing factors - histological findings, concomitant drug consumption, comorbidities, symptoms, social habits, Helicobacter pylori infection - on severe gastro-duodenal lesions in patients with low-dose aspirin and concomitant protective therapy with proton pump inhibitors (PPI)...
May 30, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28573231/moxibustion-alleviates-gastric-precancerous-lesions-in-rats-by-promoting-cell-apoptosis-and-inhibiting-proliferation-related-oncogenes
#13
Li Peng, Yu-Feng Xie, Chen-Guang Wang, Huan-Gan Wu, Mi Liu, Ya-Dong Wang, Fu-Qiang Ma, Xiao-Rong Chang, Zong-Bao Yang
BACKGROUND: It is well known that gastric mucosa dysplasia and intestinal metaplasia are gastric precancerous lesions (GPL). Moxibustion treatment of Liangmen (ST21) and Zusanli (ST36) alleviated the inflammatory response and dysplasia of gastric mucosa in our previous study. The purpose of this study was to further examine the underlying mechanism of moxibustion treatment of ST21 and ST36 on GPL. MATERIALS AND METHODS: Sixty SD rats were divided into five groups and rats with GPL were treated with either moxibustion (ST), moxibustion (Sham), or vitacoenzyme...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28573176/recurrence-of-intestinal-metaplasia-and-early-neoplasia-after-endoscopic-eradication-therapy-for-barrett-s-esophagus-a-systematic-review-and-meta-analysis
#14
Larissa L Fujii-Lau, Birtukan Cinnor, Nicholas Shaheen, Srinivas Gaddam, Srinadh Komanduri, V Raman Muthusamy, Ananya Das, Robert Wilson, Violette C Simon, Vladimir Kushnir, Daniel Mullady, Steven A Edmundowicz, Dayna S Early, Sachin Wani
BACKGROUND:  Conflicting data exist with regard to recurrence rates of intestinal metaplasia (IM) and dysplasia after achieving complete eradication of intestinal metaplasia (CE-IM) in Barrett's esophagus (BE) patients. AIM:  (i) To determine the incidence of recurrent IM and dysplasia achieving CE-IM and (ii) to compare recurrence rates between treatment modalities [radiofrequency ablation (RFA) with or without endoscopic mucosal resection (EMR) vs stepwise complete EMR (SRER)]...
June 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28566888/risk-of-progression-of-barrett-s-esophagus-in-patients-with-cirrhosis
#15
Tehilla Apfel, Rocio Lopez, Madhusudhan R Sanaka, Prashanthi N Thota
AIM: To study Barrett's esophagus (BE) in cirrhosis and assess progression to esophageal adenocarcinoma (EAC) compared to non-cirrhotic BE controls. METHODS: Cirrhotic patients who were found to have endoscopic evidence of BE confirmed by the presence of intestinal metaplasia on histology from 1/1/2000 to 12/1/2015 at Cleveland Clinic were included. Cirrhotic patients were matched 1:4 to BE controls without cirrhosis. Age, gender, race, BE length, hiatal hernia size, Child-Pugh (CP) class and histological findings were recorded...
May 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28561164/white-flat-lesions-in-the-gastric-corpus-may-be-intestinal-metaplasia
#16
Pedro Pimentel-Nunes, Daniela Dobru, Diogo Libânio, Mário Dinis-Ribeiro
No abstract text is available yet for this article.
June 2017: Endoscopy
https://www.readbyqxmd.com/read/28561163/multiple-white-flat-lesions-in-the-gastric-corpus-are-not-intestinal-metaplasia
#17
Noriya Uedo, Rino Yamaoka, Kenshi Yao
No abstract text is available yet for this article.
June 2017: Endoscopy
https://www.readbyqxmd.com/read/28560292/metaplasia-in-the-stomach-arises-from-gastric-chief-cells
#18
Jason C Mills, James R Goldenring
The development of intestinal-type gastric cancer is preceded by loss of parietal cells (oxyntic atrophy) and the induction of metaplastic cell lineages in the gastric mucosa. For example, mouse models have shown that spasmolytic polypeptide-expressing metaplasia can develop following oxyntic atrophy through transdifferentiation of zymogen-secreting chief cells. Evolution of spasmolytic polypeptide-expressing metaplasia from chief cells occurs via a coordinated dismantling of their secretory apparatus and reprogramming of their transcriptome...
July 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28558410/french-comment-on-article-extending-magnifying-nbi-diagnosis-of-intestinal-metaplasia-in-the-stomach-the-white-opaque-substance-marker
#19
(no author information available yet)
No abstract text is available yet for this article.
June 2017: Endoscopy
https://www.readbyqxmd.com/read/28557342/morphologic-characterization-of-residual-dna-methylation-in-the-gastric-mucosa-after-helicobacter-pylori-eradication
#20
Sayumi Tahara, Tomomitsu Tahara, Tetsuya Tuskamoto, Noriyuki Horiguchi, Tomohiko Kawamura, Masaaki Okubo, Takamitsu Ishizuka, Mitsuo Nagasaka, Yoshihito Nakagawa, Tomoyuki Shibata, Makoto Kuroda, Naoki Ohmiya
Residual DNA methylation in the gastric mucosa after Helicobacter pylori (H. pylori) eradication may have a role in gastric carcinogenesis. We examined the association between morphologic features and promoter methylation status of non-neoplastic gastric mucosa especially after H. pylori eradication. A total of 140 gastric specimens from 99 participants who had at least 6 months of post-eradication period were examined. The magnifying narrow-band imaging (NBI) endoscopic feature of gastric mucosa was divided into two types: 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...
May 30, 2017: Cancer Medicine
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