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Gastric dysplasia

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https://www.readbyqxmd.com/read/29667709/the-outlet-patch-gastric-heterotopia-of-the-colo-rectum-and-anus
#1
Abul Ala Syed Rifat Mannan, Michael Vieth, Armen Khararjian, Binny Khandakar, Dora Lam-Himlin, David Heydt, Feriyl Bhaijee, Henry J Venbrux, Kathleen Byrnes, Lysandra Voltaggio, Norman Barker, Songyang Yuan, Elizabeth Montgomery
AIMS: Gastric heterotopia (GH) has been described throughout the gastrointestinal tract. However, the colorectal region is an extremely rare location for it. We describe the clinicopathologic features of GH of the colon, rectum, and anus. METHODS AND RESULTS: We identified 33 cases in 20 males and 13 females (median age 54 years; range, 4 months to 73 years). Sites included the rectum (N=26), anus (N=4), ileocecal junction (N=1), ascending colon (N=1) and descending colon (N=1)...
April 18, 2018: Histopathology
https://www.readbyqxmd.com/read/29658583/intraductal-papillary-mucinous-neoplasms-of-the-pancreas-clinical-association-with-kras
#2
Xiao Yan Chang, Yan Wu, Yuan Li, Jing Wang, Jie Chen
Intraductal papillary mucinous neoplasms of the pancreas (IPMN) are among the most important precancerous lesions in the pancreas. V‑Ki‑ras 2 Kirsten rat sarcoma viral oncogene homolog (KRAS) is one of the most important genes involved in pancreatic neoplasms, and exhibits a high mutation rate in pancreatic ductal adenocarcinomas and pancreatic intraepithelial neoplasia. The present study aimed to further elucidate the associations among IPMN subtypes (gastric, intestinal, pancreatobiliary and oncocytic), pathological classifications [low‑grade, intermediate‑grade, and high‑grade IPMN, and associated minimally invasive carcinoma (invasive depth ≤0...
April 12, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29607431/evaluation-of-patients-with-gastric-polyps
#3
Sehmus Olmez, Suleyman Sayar, Bunyamin Saritas, Ayla Yildiz Savas, Ufuk Avcioglu, Ilyas Tenlik, Ersan Ozaslan, Hasan Tankut Koseoglu, Emin Altiparmak
OBJECTIVE: The incidence of gastric polyps (GPs) greatly differs according to study populations and was found to be 0.33%-6.7% in various studies. The majority of GPs are composed of hyperplastic polyps (HPs), fundic gland polyps (FGPs), and adenomatous polyps (APs). Although APs have a high risk of malignant potential, sporadic FGPs have no malignant potential. Conversely, HPs have a low risk of malignant potential. It is not sufficient to perform a biopsy to identify the polyp type and the presence of dysplasia; thus, some polyps may require multiple biopsies or total excision...
2018: Northern Clinics of Istanbul
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/29588340/xz-1-regulates-cell-apoptosis-of-gastric-epithelial-dysplasia-via-nf-%C3%AE%C2%BAb-p53-ki67-signaling-pathway
#5
An-Ming Zhang, Bo Xu, Fang Li, Miao Cui, Ji Han, Qin Cao
We aimed to determine the effect of "Xiaozeng No. 1" (XZ-1) on cellular apoptosis changes of gastric epithelial dysplasia (GED) and to explore the underlying mechanism. Specimens taken from the pyloric area of the stomachs from rats in each group were subjected to H&E staining for pathological examination, TUNEL staining for apoptosis detection, and Western blot analysis of apoptosis-related proteins. The results showed that XZ-1 decreased GED incidence and enhanced gastric epithelial apoptosis...
March 27, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29581795/the-association-of-digit-ratio-2d-4d-with-cancer-a-systematic-review-and-meta-analysis
#6
REVIEW
Adomas Bunevicius
Objective: Intrauterine sex hormone environment as indicated by the second to the fourth digit ratio (2D : 4D) can be associated with cancer risk. This systematic review and meta-analysis aimed to evaluate the association of 2D : 4D with cancer diagnosis, malignancy, and age at presentation. Methods: Studies that evaluated the association of 2D : 4D with cancer risk were collected from Pubmed/MEDLINE and Clarivate Analytics databases. Nineteen studies were included in the qualitative analysis...
2018: Disease Markers
https://www.readbyqxmd.com/read/29577459/astragaloside-iv-reverses-mnng-induced-precancerous-lesions-of-gastric-carcinoma-in-rats-regulation-on-glycolysis-through-mirna-34a-ldha-pathway
#7
Chengzhe Zhang, Tiantian Cai, Xiaohui Zeng, Dake Cai, Yuxing Chen, Xuejun Huang, Haining Gan, Juncheng Zhuo, Ziming Zhao, Huafeng Pan, Siyi Li
This study was designed to investigate the precancerous lesions of gastric carcinoma (PLGC)-reversing mechanisms of astragaloside IV (ASIV) in N-methyl-N'-nitro-N-nitrosoguanidine (MNNG)-induced PLGC rats. All rats were sacrificed after 10-week treatment. Gastric tissue was analyzed by using histopathology and electron microscope. To be fully evidenced, LDHA, p53, TIGAR, MCT1, MCT4, HIF-1α, CD147, and miRNA-34a were detected by Western blotting and Real-time Quantitative polymerase chain reaction (RT-qPCR)...
March 26, 2018: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29557410/pepsinogen-test-for-the-evaluation-of-precancerous-changes-in-gastric-mucosa-a-population-based-study
#8
Olga Sjomina, Jelizaveta Pavlova, Ilva Daugule, Pavel Janovic, Ilze Kikuste, Aigars Vanags, Ivars Tolmanis, Dace Rudzite, Inese Polaka, Ilona Kojalo, Inta Liepniece-Karele, Sergejs Isajevs, Daiga Santare, Valdis Pirags, Jelena Pahomova, Vilnis Dzerve, Lilian Tzivian, Andrejs Erglis, Marcis Leja
AIMS: The aim of the study was to evaluate the rationale of blood pepsinogen (PG) testing in population based screening settings. METHODS: Participants from a cross-sectional population-based study of cardiovascular risk factors in Latvia were invited to participate in the current study. Pepsinogen I and II were measured in blood samples taken during the initial study and at follow-up; upper gastrointestinal endoscopy was performed. There were three groups of patients: with moderately decreased (PG I< 70 ng/ml and PG I/PG II ratio < 3), with strongly decreased (PG I< 30 ng/ml and PG I/PG II ratio < 2), and with normal PG level...
March 2018: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/29549924/differential-expression-and-significance-of-endoplasmic-reticulum-golgi-intermediate-compartment-1-in-precancerous-gastric-lesions-and-gastric-cancer
#9
Furong Wang, Xiaoying Guan, Jinwei Yang, Wenting He, Yucai Wei, Hao Chen, Yumin Li
BACKGROUND: We investigated the expression of endoplasmic reticulum Golgi intermediate compartment 1 (ERGIC1) in precancerous gastric lesions and gastric cancer and the function of ERGIC in human gastric cancer cell lines. MATERIALS AND METHODS: A total of 160 subjects were enrolled. The expression of ERGIC1 was assayed using immunohistochemistry. Overexpression of ERGIC1 in SGC-7901 and BGC-823 cells was used to evaluate the function of ERGIC1. RESULTS: Most normal gastric mucosal tissues and the tissues with mild dysplasia showed strong expression of ERGIC1 (80% and 73...
March 2018: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/29535809/circulating-microrna-196a-is-an-early-gastric-cancer-biomarker
#10
Tsung-Hsing Chen, Chieh Lee, Cheng-Tang Chiu, Yin-Yi Chu, Hao-Tsai Cheng, Jun-Te Hsu, Yung-Kuan Tsou, Ren-Chin Wu, Tse-Ching Chen, Nien-Chen Chang, Ta-Sen Yeh, Kwang-Huei Lin
MicroRNA-196a (miRNA-196a) is associated with the development of gastric cancer and metastasis. Intestinal metaplasia and low- or high-grade dysplasia are considered to be precursors of intestinal type gastric cancer. Accordingly, we investigated the expression of plasma miRNA-196a as an early detection biomarker in precancerous gastric lesions and early cancer (pT1a/b), which is otherwise treated with endoscopic submucosal dissection. Our data showed that levels of circulating (plasma) miRNA-196a were higher in patients with precancerous lesions/early gastric adenocarcinoma than in healthy controls...
February 13, 2018: Oncotarget
https://www.readbyqxmd.com/read/29519989/-helicobacter-pylori-and-precancerous-lesions-of-the-stomach-in-a-nigerian-metropolis-a-cohort-study
#11
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/29519608/the-impact-of-preoperative-investigations-on-the-management-of-bariatric-patients-results-of-a-cohort-of-more-than-1200-cases
#12
Romano Schneider, Ioannis Lazaridis, Marko Kraljević, Christoph Beglinger, Bettina Wölnerhanssen, Ralph Peterli
BACKGROUND: Despite the increasing use of bariatric surgery as the most effective treatment of morbid obesity, there is still no consensus on its preoperative diagnostic workup. The aim of this study was to identify the pathologies of the endoscopic and radiologic investigations before performing bariatric surgery and to evaluate their impact on the patient management. METHODS: Retrospective analysis of prospectively collected data of 1225 consecutive patients who underwent laparoscopic Roux-en-Y gastric bypass (n = 834) or sleeve gastrectomy (n = 391) at our institution...
January 12, 2018: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/29496571/unusual-findings-in-peutz-jeghers-syndrome-endoscopic-and-histological-appearance-of-gastric-hamartomatous-polyposis-with-foveolar-dysplasia
#13
Giuseppe Vanella, Giancarlo D'Ambra, Emanuela Pilozzi, Gabriele Capurso, Emilio Di Giulio
No abstract text is available yet for this article.
February 26, 2018: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29483497/lectin-binding-patterns-in-normal-dysplastic-and-helicobacter-pylori-infected-gastric-mucosa
#14
S Vernygorodskyi, V Shkolnikov, D Suhan
AIM: To analyze the glycoprotein binding sites of the gastric mucosa and its secreted mucus using lectin histochemistry in patients with chronic non-atrophic gastritis (CNAG) associated or not-associated with Helicobacter pylori infection with or without dysplasia. MATERIALS AND METHODS: In order to identify the areas with glycoconjugates expression in gastric mucosa, 6 lectins (Canavalia ensiformis agglutinin - Con A, Sambucus nigra agglutinin - SNA, wheat germ agglutinin - WGA, soybean agglutinin - SBA, Helix pomatia agglutinin - HPA, peanut agglutinin - PNA) were used...
July 2017: Experimental Oncology
https://www.readbyqxmd.com/read/29481961/up-regulated-th17-cell-function-is-associated-with-increased-peptic-ulcer-disease-in-helicobacter-pylori-infection
#15
Nader Bagheri, Alireza Razavi, Batoul Pourgheysari, Fatemeh Azadegan-Dehkordi, Ghorbanali Rahimian, Ashkan Pirayesh, Mohammedhadi Shafigh, Mahmoud Rafieian-Kopaei, Rana Fereidani, Kamran Tahmasbi, Hedayatollah Shirzad
BACKGROUND: During Helicobacter pylori (H. pylori) infection CD4+ T cells in the gastric lamina propria are hyporesponsive and polarized by Th1/Th17 cell responses controlled by Treg cells. The objective of this study was to determine the number of Th17 cells in gastric mucosa of patients with gastritis and peptic ulcer and determined the relationship between main virulence factor of H. pylori and Th17 cells. METHODS AND MATERIALS: A total of 89 H. pylori-infected gastritis patients, 63 H...
February 23, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29477376/is-preoperative-gastroscopy-necessary-before-sleeve-gastrectomy-and-roux-en-y-gastric-bypass
#16
Tuure Saarinen, Ulla Kettunen, Kirsi H Pietiläinen, Anne Juuti
BACKGROUND: Consensus on the necessity of esophagogastroduodenoscopy (EGD) before bariatric surgery is lacking. Recommendations and practices vary by country and unit. Several reports have expressed concerns on gastroesophageal reflux disease (GERD) and its consequences after sleeve gastrectomy (SG) and the risk of leaving a premalignant lesion in the excluded stomach after Roux-en-Y gastric bypass (RYGB). OBJECTIVES: We explored the number and types of clinically significant findings in preoperative EGDs and how they associate with preexisting GERD-symptoms (SG) and premalignant lesions (RYGB)...
February 14, 2018: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/29468422/molecular-profiling-and-comprehensive-genome-wide-analysis-of-somatic-copy-number-alterations-in-gastric-intramucosal-neoplasias-based-on-microsatellite-status
#17
Tamotsu Sugai, Makoto Eizuka, Noriyuki Arakawa, Mitsumasa Osakabe, Wataru Habano, Yasuko Fujita, Eiichiro Yamamoto, Hiroo Yamano, Masaki Endoh, Takayuki Matsumoto, Hiromu Suzuki
BACKGROUND: We attempted to identify the molecular profiles of gastric intramucosal neoplasia (IMN; low-grade dysplasia, LGD; high-grade dysplasia, HGD; intramucosal cancer, IMC) by assessing somatic copy number alterations (SCNAs) stratified by microsatellite status (microsatellite stable, MSS; microsatellite instable, MSI). Thus, microsatellite status was determined in 84 tumors with MSS status and 16 tumors with MSI status. METHODS: One hundred differentiated type IMNs were examined using SCNAs...
February 21, 2018: Gastric Cancer
https://www.readbyqxmd.com/read/29449092/efficacy-of-narrow-band-imaging-for-detecting-intestinal-metaplasia-in-adult-patients-with-symptoms-of-dyspepsia
#18
S Sobrino-Cossío, J M Abdo Francis, F Emura, E S Galvis-García, M L Márquez Rocha, G Mateos-Pérez, C B González-Sánchez, N Uedo
INTRODUCTION AND OBJECTIVE: Atrophy and intestinal metaplasia are early phenotypic markers in gastric carcinogenesis. White light endoscopy does not allow direct biopsy of intestinal metaplasia due to a lack of contrast of the mucosa. Narrow-band imaging is known to enhance the visibility of intestinal metaplasia, to reduce sampling error, and to increase the diagnostic yield of endoscopy for intestinal metaplasia in Asian patients. The aim of our study was to validate the diagnostic performance of narrow-band imaging using 1...
February 12, 2018: Revista de Gastroenterología de México
https://www.readbyqxmd.com/read/29436014/comparison-of-dysplastic-fundic-gland-polyps-in-patients-with-and-without-familial-adenomatous-polyposis
#19
Shana F Straub, Michael G Drage, Raul S Gonzalez
AIM: Dysplastic FGPs (d-FGPs) typically arise in patients with familial adenomatous polyposis (FAP) but may occur in nonsyndromic patients. They rarely develop malignancy, but their significance is unclear, especially in nonsyndromic patients. APC/β-catenin alterations have been implicated in their pathogenesis, and β-catenin immunohistochemistry (IHC) may show nuclear positivity. METHODS AND RESULTS: We identified 124 FGPs with low-grade dysplasia (LGD) or high-grade dysplasia (HGD) or indefinite for dysplasia (IFD) from 66 patients (27 with FAP, 39 nonsyndromic)...
February 12, 2018: Histopathology
https://www.readbyqxmd.com/read/29433769/endoscopic-submucosal-dissection-as-treatment-for-early-gastric-cancer-experience-at-two-centers-in-lima-peru
#20
J A Chirinos Vega, G Vargas, C Alcántara, J Zapata
INTRODUCTION AND AIMS: The aim of the present study was to evaluate the feasibility of endoscopic submucosal dissection (ESD) and determine the clinical and pathologic characteristics of early gastric cancers and premalignant lesions treated with that technique at the Hospital Nacional of the Department of Health and a private clinic in Lima, Peru. MATERIAL AND METHODS: A descriptive study of all pre-malignant and malignant gastric lesions treated with ESD at the Gastroenterology Service of the Hospital Arzobispo Loayza and the Clínica Angloamericana was conducted within the time frame of January 2012 and January 2017...
February 9, 2018: Revista de Gastroenterología de México
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