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https://www.readbyqxmd.com/read/29671160/cardiac-metaplasia-follow-treat-or-ignore
#1
REVIEW
Stuart J Spechler
Over the past two decades, evidence has accumulated to challenge the traditional view that cardiac mucosa, which is comprised exclusively of mucus glands, is the normal lining of the most proximal portion of the stomach (the gastric cardia). There is now considerable evidence to suggest that cardiac mucosa develops as a GERD-induced, squamous-to-columnar esophageal metaplasia in some, if not all, cases. Although cardiac mucosa lacks the goblet cells commonly required for a histologic diagnosis of intestinal metaplasia, cardiac mucosa has many molecular features of an intestinal-type mucosa, and appears to be the precursor of intestinal metaplasia with goblet cells...
April 18, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29666402/expression-of-kk-lc-1-a-cancer-testis-antigen-at-non-tumour-sites-of-the-stomach-carrying-a-tumour
#2
Takashi Fukuyama, Nobue Futawatari, Rui Yamamura, Taiga Yamazaki, Yoshinobu Ichiki, Akira Ema, Hideki Ushiku, Yatsushi Nishi, Yoshihito Takahashi, Toshikazu Otsuka, Hitoshi Yamazaki, Wasaburo Koizumi, Kosei Yasumoto, Noritada Kobayashi
Kita-Kyushu lung cancer antigen-1 (KK-LC-1) is a cancer/testis antigen (CTA) and predominant target for cancer immunotherapy. Our previous study indicated that KK-LC-1 was expressed in 82% of gastric cancers, and also in 79% of early stage of gastric cancers, with a correlation to Helicobacter pylori (H. pylori) infection. In addition, we found that KK-LC-1 was occasionally expressed at non-tumour sites of stomachs carrying tumours. Here, we investigated the characteristics of KK-LC-1 expression at non-tumour sites and the clinical utility of these phenomena...
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29656498/helicobacter-pylori-infection-induced-h3ser10-phosphorylation-in-stepwise-gastric-carcinogenesis-and-its-clinical-implications
#3
Tao-Tao Yang, Na Cao, Hai-Hui Zhang, Jian-Bo Wei, Xiao-Xia Song, Dong-Min Yi, Shuai-Heng Chao, Li-Da Zhang, Ling-Fei Kong, Shuang-Yin Han, Yu-Xiu Yang, Song-Ze Ding
BACKGROUND: Our previous works have demonstrated that Helicobacter pylori (Hp) infection can alter histone H3 serine 10 phosphorylation status in gastric epithelial cells. However, whether Helicobacter pylori-induced histone H3 serine 10 phosphorylation participates in gastric carcinogenesis is unknown. We investigate the expression of histone H3 serine 10 phosphorylation in various stages of gastric disease and explore its clinical implication. MATERIALS AND METHODS: Stomach biopsy samples from 129 patients were collected and stained with histone H3 serine 10 phosphorylation, Ki67, and Helicobacter pylori by immunohistochemistry staining, expressed as labeling index...
April 15, 2018: Helicobacter
https://www.readbyqxmd.com/read/29606921/overview-of-current-concepts-in-gastric-intestinal-metaplasia-and-gastric-cancer
#4
David S Jencks, Jason D Adam, Marie L Borum, Joyce M Koh, Sindu Stephen, David B Doman
Gastric intestinal metaplasia is a precancerous change of the mucosa of the stomach with intestinal epithelium, and is associated with an increased risk of dysplasia and cancer. The pathogenesis to gastric cancer is proposed by the Correa hypothesis as the transition from normal gastric epithelium to invasive cancer via inflammation followed by intramucosal cancer and invasion. Multiple risk factors have been associated with the development of gastric intestinal metaplasia interplay, including Helicobacter pylori infection and associated genomics, host genetic factors, environmental milieu, rheumatologic disorders, diet, and intestinal microbiota...
February 2018: Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29599357/gastric-cancer-of-crawling-type-detected-by-additional-gastrectomy-after-endoscopic-submucosal-resection
#5
Yasuhiro Haruta, Ryota Nakanishi, Tomoko Jogo, Yuichiro Nakashima, Hiroshi Saeki, Eiji Oki, Minako Fujiwara, Yoshinao Oda, Yoshihiko Maehara
"Crawling type" gastric cancer (GC) is known as a rare variant of early GCs, which is difficult to diagnose at an early stage because of low-grade nuclear atypia and a morphology mimicking intestinal metaplasia. This is a case report of a 69-year-old woman who was diagnosed with early-stage gastric cancer. She had endoscopic submucosal resection (ESD) and histologically, both horizontal and vertical margins were negative. Seven months after ESD, a new lesion of the stomach was detected by follow-up gastroscopy...
April 2018: Anticancer Research
https://www.readbyqxmd.com/read/29552386/spectrum-and-time-resolved-endogenous-multiphoton-signals-reveal-quantitative-differentiation-of-premalignant-and-malignant-gastric-mucosa
#6
Xi Li, Hui Li, Xingzhen He, Tingai Chen, Xianyuan Xia, Chunxia Yang, Wei Zheng
Early identification of premalignant and malignant gastric mucosa is crucial to decrease the incidence and mortality of stomach cancer. Spectrum- and time-resolved multiphoton microscopy are capable of providing not only structural but also biochemical information at the subcellular level. Based on this multidimensional imaging technique, we performed a systematic investigation on fresh human tissue specimens at the typical stages of gastric carcinogenesis, including normal, chronic gastritis with erosion, chronic gastritis with intestinal metaplasia, and intestinal-type adenocarcinoma...
February 1, 2018: Biomedical Optics Express
https://www.readbyqxmd.com/read/29519989/-helicobacter-pylori-and-precancerous-lesions-of-the-stomach-in-a-nigerian-metropolis-a-cohort-study
#7
E Ray-Offor, C C Obiorah
Introduction: Helicobacter pylori (H. pylori)-related atrophic gastritis transits through a sequential pathway of intestinal metaplasia, dysplasia to gastric cancer. Gastroscopy offers early detection, treatment and surveillance of gastric cancer. Aims: This study aims to study the prevalence of H. pylori infection and evaluate precancerous lesions (PCLs) of the stomach. Patients and Methods: This is a case controlled study of patients with dyspepsia undergoing gastroscopy at a referral endoscopy facility in Port Harcourt metropolis of Nigeria...
March 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29463648/id2-determines-intestinal-identity-through-repression-of-the-foregut-transcription-factor-irx5
#8
Kentaro Mori, Harumi Nakamura, Hisanori Kurooka, Hitoshi Miyachi, Kota Tamada, Manabu Sugai, Toru Takumi, Yoshifumi Yokota
The cellular components and function of the gastrointestinal epithelium exhibit distinct characteristics depending on the region, e.g., stomach or intestine. How these region-specific epithelial characteristics are generated during development remains poorly understood. Here, we report on the involvement of the helix-loop-helix inhibitor Id2 in establishing the specific characteristics of the intestinal epithelium. Id2 -/- mice developed tumors in the small intestine. Histological analysis indicated that the intestinal tumors were derived from gastric metaplasia formed in the small intestine during development...
February 20, 2018: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29427515/injury-repair-inflammation-and-metaplasia-in-the-stomach
#9
Anne R Meyer, James R Goldenring
The development of intestinal-type gastric cancer is preceded by the emergence of metaplastic cell lineages in the gastric mucosa. In particular, intestinal metaplasia and spasmolytic polypeptide-expressing metaplasia (SPEM) have been associated with the pathological progression to intestinal-type gastric cancer. The development of SPEM represents a physiological response to damage that recruits reparative cells to sites of mucosal injury. Metaplastic cell lineages are characterized by mucus secretion, adding a protective barrier to the epithelium...
February 10, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29345968/mature-gastric-chief-cells-are-not-required-for-the-development-of-metaplasia
#10
Hiroto Kinoshita, Yoku Hayakawa, Zhengchuan Niu, Mitsuru Konishi, Masahiro Hata, Mayo Tsuboi, Yuki Hayata, Yohko Hikiba, Sozaburo Ihara, Hayato Nakagawa, Yoshihiro Hirata, Timothy C Wang, K Koike
During human gastric carcinogenesis, intestinal metaplasia (IM) is frequently seen in the atrophic stomach. In mice, a distinct type of metaplasia known as spasmolytic polypeptide-expressing metaplasia (SPEM) is found in several inflammatory and genetically engineered models. Given the diversity of long- and short-term models of mouse SPEM, it remains unclear whether all models have a shared or distinct molecular mechanism. The origin of SPEM in mice is currently under debate. It is postulated that stem or progenitor cells acquire genetic alterations that then supply metaplastic cell clones, while the possibility of transdifferentiation or dedifferentiation from mature gastric chief cells has also been suggested...
January 18, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29315971/levels-of-malondialdehyde-in-the-gastric-juice-its-association-with-helicobacter-pylori-infection-and-stomach-diseases
#11
Yao-Kuang Wang, Wei-Chih Chiang, Fu-Chen Kuo, Meng-Chieh Wu, Hsiang-Yao Shih, Sophie S W Wang, Chung-Jung Liu, Yen-Hsu Chen, Deng-Chyang Wu, Wei-Wen Su, Yeou-Lih Huang
BACKGROUND: Helicobacter pylori (H. pylori) infection causes elevation of lipid peroxidation product malondialdehyde (MDA) and this association may be due to the bacterium causing reactive oxygen species-mediated damage to DNA in the gastric epithelium. The aim of this study was to investigate the gastric juice MDA levels in relation to H. pylori infection and associated gastric diseases. METHODS: Gastric juice samples were obtained from 117 patients undergoing endoscopy, and gastric juice MDA levels were determined by high-performance liquid chromatography (HPLC) system...
April 2018: Helicobacter
https://www.readbyqxmd.com/read/29302869/lanthanum-induced-mucosal-alterations-in-the-stomach-lanthanum-gastropathy-a-comparative-study-using-an-animal-model
#12
Kei Yabuki, Joji Haratake, Yojiro Tsuda, Eisuke Shiba, Hiroshi Harada, Kenji Yorita, Kazuyoshi Uchihashi, Atsuji Matsuyama, Keiji Hirata, Masanori Hisaoka
Lanthanum (La) carbonate (LC) is one of the most potent phosphate binders that prevents the elevation of serum phosphate levels in patients with end-stage renal diseases undergoing dialysis. LC binds strongly to dietary phosphate and forms insoluble complexes that pass through the gastrointestinal tract. La deposition in patients treated with LC is a recently documented finding particularly observed in gastric mucosa. We herein describe the detailed gastric mucosal lesions in 45 LC-treated patients and address the potential underlying pathologic mechanism using oral LC administration in rats...
January 4, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29248442/metaplastic-cells-in-the-stomach-arise-independently-of-stem-cells-via-dedifferentiation-or-transdifferentiation-of-chief-cells
#13
Megan D Radyk, Joseph Burclaff, Spencer G Willet, Jason C Mills
Spasmolytic polypeptide-expressing metaplasia (SPEM) develops in patients with chronic atrophic gastritis due to infection with Helicobacter pylori; it might be a precursor to intestinal metaplasia and gastric adenocarcinoma. Lineage tracing experiments of the gastric corpus in mice have not established whether SPEM derives from proliferating stem cells or differentiated, post-mitotic zymogenic chief cells in the gland base. We investigated whether differentiated cells can give rise to SPEM using a nongenetic approach in mice...
March 2018: Gastroenterology
https://www.readbyqxmd.com/read/29233547/the-developing-spectrum-of-gastric-type-cervical-glandular-lesions
#14
REVIEW
Karen L Talia, W Glenn McCluggage
Adenocarcinoma of the cervix is less common than squamous cell carcinoma, although its relative prevalence is increasing. Oncogenic (high-risk) human papillomavirus (HPV) infection is implicated in the development of approximately 90% of all cervical adenocarcinomas. Of the remaining non-HPV associated tumours, the most frequent is gastric-type adenocarcinoma (GAS), which is recognised by the World Health Organization as a form of mucinous adenocarcinoma of the cervix. Minimal deviation adenocarcinoma (MDA) of mucinous type (adenoma malignum) is considered an extremely well differentiated variant of GAS and is encompassed within the category of GAS...
February 2018: Pathology
https://www.readbyqxmd.com/read/29225268/two-cases-of-lanthanum-deposition-in-the-stomach-in-the-absence-of-helicobacter-pylori-infection
#15
Masaya Iwamuro, Haruo Urata, Takehiro Tanaka, Seiji Kawano, Yoshiro Kawahara, Katsuhiko Kimoto, Hiroyuki Okada
In this case report, we describe two patients who showed a diffusely whitish mucosa in the posterior wall and the lesser curvature of the gastric body. The patients were serologically- and histopathologically-negative for Helicobacter pylori. Random biopsy specimens from the stomach revealed no regenerative changes, intestinal metaplasia, and/or foveolar hyperplasia in either of the patients. Although lanthanum deposition in the gastric mucosa has been reported to occur in close association with H. pylori-associated gastritis, our patients tested negative for H...
December 8, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29218319/low-yield-for-non-targeted-biopsies-of-the-stomach-and-esophagus-during-elective-esophagogastroduodenoscopy
#16
Michael K Dougherty, Phillip P Santoiemma, Andrew T Weber, David C Metz, Yu-Xiao Yang
Background and study aims:  Biopsies of non-specific mucosal findings are often performed during esophagogastroduodenoscopy (EGD). We sought to determine the prevalence and clinical utility of non-targeted biopsies of the stomach and esophagus. Patients and methods:  We conducted a retrospective review of 949 outpatient EGDs performed at a US tertiary referral center. Non-targeted biopsies of the stomach were defined as either "normal" or "mild" to "moderate" "erythema" or "inflammation" without other endoscopic features...
December 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/29161426/family-history-of-gastric-mucosal-abnormality-and-the-risk-of-gastric-cancer-a-population-based-observational-study
#17
Huan Song, Isabella Guncha Ekheden, Alexander Ploner, Jan Ericsson, Olof Nyren, Weimin Ye
Background: An increased prevalence of gastric premalignant abnormalities was reported among relatives of gastric cancer (GC) patients, with rather unexplored clinical significance. Methods: In Swedish computerized pathology registers, we identified, as 'index' persons 232 681 patients who were born after 1931 and underwent endoscopic examination with stomach biopsy between 1979 and 2014. Through linkage with the Multi-Generation Register, we compiled a cohort consisting of 903 337 first-degree relatives of these biopsied patients...
November 17, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/29154808/genetic-host-factors-in-helicobacter-pylori-induced-carcinogenesis-emerging-new-paradigms
#18
REVIEW
Michiel C Mommersteeg, Jun Yu, Maikel P Peppelenbosch, Gwenny M Fuhler
Helicobacter Pylori is a gram negative rod shaped microaerophilic bacterium that colonizes the stomach of approximately half the world's population. Infection with c may cause chronic gastritis which via a quite well described process known as Correas cascade can progress through sequential development of atrophic gastritis, intestinal metaplasia and dysplasia to gastric cancer. H. pylori is currently the only bacterium that is classified as a class 1 carcinogen by the WHO, although the exact mechanisms by which this bacterium contributes to gastric carcinogenesis are still poorly understood...
January 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29151240/rare-entities-of-histopathological-findings-in-755-sleeve-gastrectomy-cases-a-synopsis-of-preoperative-endoscopy-findings-and-histological-evaluation-of-the-specimen
#19
Erkan Yardimci, Suleyman Bozkurt, Lutfullah Baskoy, Huseyin Kazim Bektasoglu, Melin Ozgun Gecer, Samet Yigman, Huseyin Akbulut, Halil Coskun
BACKGROUND: Laparoscopic sleeve gastrectomy (LSG) is the most preferred technique in morbidly obese patients for weight loss. There is a controversy about the routine preoperative evaluation of the stomach and the routine microscopic examination of all LSG specimens. Our aim is to analyze the results of both preoperative upper gastrointestinal endoscopy and endoscopic biopsies and also the results of histopathological examination of LSG specimens. MATERIALS AND METHODS: The data of patients who underwent LSG from January 2011 to November 2016 were analyzed retrospectively from a prospectively collected database...
November 18, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/29102522/long-term-course-of-precancerous-lesions-arising-in-patients-with-gastric-malt-lymphoma
#20
Anne-Laure Rentien, Michaël Lévy, Christiane Copie-Bergman, Charlotte Gagniere, Jehan Dupuis, Yann Le Baleur, Karim Belhadj, Iradj Sobhani, Corinne Haioun, Jean-Charles Delchier, Aurelien Amiot
BACKGROUND AND AIMS: To evaluate the prevalence and the long-term course of gastric precancerous lesions in patients with GML. PATIENTS AND METHODS: In this retrospective single-centre study, we included 179 patients with GML, 70 with gastric diffuse large B-cell lymphoma (GDLBCL) and 152 with Helicobacter pylori-associated gastritis (HpG), from January 1995 to January 2014. The presence of atrophic gastritis, intestinal metaplasia and neoplastic lesion has been assessed at baseline and during follow-up...
February 2018: Digestive and Liver Disease
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