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Gastric lymphoma

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https://www.readbyqxmd.com/read/28089436/the-significance-of-histologic-examination-of-gastrectomy-specimens-a-clinicopathologic-study-of-511-cases
#1
Pavel Kopach, Elizabeth M Genega, Sajani N Shah, Julie J Kim, Yvelisse Suarez
BACKGROUND: Sleeve gastrectomy (SG) is quickly becoming the preferred procedure for bariatric surgery. According to the American Society for Metabolic and Bariatric Surgery guidelines, routine preoperative upper gastrointestinal endoscopies are not recommended universally for bariatric surgery. Some studies have shown that the histologic examination of SG specimens is insignificant and not a cost-effective practice. However, some speculate SG examination may unveil pertinent findings and prevent further progression of precursor lesions...
November 15, 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28078126/gastrointestinal-lymphoma-in-western-algeria-pattern-of-distribution-and-histological-subtypes-retrospective-study
#2
Soumia Zeggai, Noria Harir, Abdenacer Tou, Miloud Medjamia, Khaira Guenaoui
BACKGROUND: Primary gastrointestinal (GI) lymphomas (GIL) are uncommon diseases that can involve the whole GI tract. Considerable variation exists in the literature with respect to incidence of the various histological subtypes and sites of involvement. This study was undertaken to establish the anatomic distribution, histological subtypes and sites of GI lymphomas of patients from Western Algeria. METHODS: The case records of 58 consecutive patients with GIL diagnosed at the Pathologies Departments of Algerian west region (the Military Hospital of Oran city and the Central University Hospital of Sidi Bel Abbes city) from January 2006 to December 2013 were retrospectively evaluated for epidemiology and histopathology report...
December 2016: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28077625/radiotherapy-for-localized-gastric-mucosa-associated-lymphoid-tissue-lymphoma-long-term-outcomes-over-10-years
#3
Yu Ohkubo, Yoshihiro Saito, Hiroki Ushijima, Masahiro Onishi, Tomoko Kazumoto, Jun-Ichi Saitoh, Nobuko Kubota, Hirofumi Kobayashi, Nobuo Maseki, Yu Nishimura, Masafumi Kurosumi
This study aimed to assess the long-term outcomes of radiotherapy in patients with localized gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Twenty-seven patients with Stage I gastric MALT lymphoma were treated with radiotherapy from 1999 to 2010. The median age was 65 years (range: 31-84). Fifteen patients were Helicobacter pylori-negative. Thirteen patients were treated with definitive radiotherapy alone. The other 14 patients who had refractory or residual disease following a prior treatment received salvage radiotherapy...
January 10, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28057912/mir-340-inhibits-proliferation-and-induces-apoptosis-in-gastric-cancer-cell-line-sgc-7901-possibly-via-the-akt-pathway
#4
Jinzhong Yu, Ruijie Wang, Jianshe Chen, Jinfeng Wu, Zhongqin Dang, Qinsheng Zhang, Bo Li
BACKGROUND Gastric cancer is among the most common types of cancer, with high morbidity and mortality. MicroRNAs (miRNAs) play vital roles in the tumorigenesis and biology of gastric cancer. This study aimed to reveal the role of miR-340 in gastric cancer cell proliferation and apoptosis and to elucidate the potential mechanisms. MATERIAL AND METHODS Human gastric cancer cells SGC-7901 were used in this study for cell transfection with miR-340 mimic or inhibitor. After transfection, cell viability, proliferation, and apoptosis were examined by MTT, BrdU, and flow cytometry assays, respectively...
January 6, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28052279/prevalence-of-gastric-non-helicobacter-pylori-helicobacters-in-japanese-patients-with-gastric-disease
#5
Anders Øverby, Somay Y Murayama, Hirofumi Michimae, Hidekazu Suzuki, Masayuki Suzuki, Hiroshi Serizawa, Ryo Tamura, Shinichi Nakamura, Shinichi Takahashi, Masahiko Nakamura
BACKGROUND: Non-Helicobacter pylori-helicobacters (NHPH) compose a group of gram negative zoonotic bacteria that may induce in humans gastric diseases including gastritis, gastroduodenal ulcer and MALT lymphoma. Their prevalence in the general population has previously been reported to 0.1-6.2%, although such reports still remain less in number. AIMS: This study aimed at estimating the prevalence of gastric NHPH in Japanese people, and further aimed at linking this to different gastric diseases and co-infection with H...
2017: Digestion
https://www.readbyqxmd.com/read/28047956/tu-ab-bra-10-treatment-of-gastric-malt-lymphoma-utilizing-a-magnetic-resonance-image-guided-radiation-therapy-mr-igrt-system-evaluation-of-gating-feasibility
#6
T Mazur, H Gach, A Chundury, B Fischer-Valuck, J Huang, M Thomas, O Green
PURPOSE: To evaluate the feasibility of real-time, real-anatomy tracking and gating for gastric lymphoma patients treated with magnetic resonance image-guided radiation therapy (MR-IGRT) METHODS: Over the last 2 years, 8 patients with gastric lymphoma were treated with 0.3-T, Co-60 MR-IGRT. Post-treatment analysis of real-time cine imaging in the sagittal plane during each patient's treatment revealed significant motion of the stomach. While this motion was accounted for with generous PTV margins, the system's capability for real-time, real-anatomy tracking could be used to reduce treatment margins by gating...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28031660/a-rare-case-of-gastric-mantle-cell-lymphoma-causing-superior-mesenteric-artery-syndrome-in-an-adult
#7
Shailesh Garg, Alain Derzie
Superior mesenteric artery (SMA) syndrome or Wilkie syndrome is a rare condition that arises when the distal third of the duodenum becomes trapped between the SMA and the abdominal aorta causing intestinal obstruction. It is most commonly described in adolescents and rarely in adult patients. We present an interesting case of an adult who developed SMA syndrome from an uncommon gastric mantle cell lymphoma that was recognized early and treated surgically.
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28031239/micrornas-142-3p-mir-155-and-mir-203-are-deregulated-in-gastric-malt-lymphomas-compared-to-chronic-gastritis
#8
Concepción Fernández, Beatriz Bellosillo, Mariana Ferraro, Agustín Seoane, Blanca Sánchez-González, Silvia Pairet, Aina Pons, Luis Barranco, María Carmen Vela, Eva Gimeno, Lluís Colomo, Carles Besses, Alfons Navarro, Antonio Salar
BACKGROUND: Over the last years, our knowledge on pathogenesis of gastric MALT lymphoma has greatly improved, but its morphological diagnosis is still hampered by overlapping histological features with advanced chronic gastritis. MicroRNAs are deregulated in lymphomas, but their role and usefulness in gastric MALT lymphoma has not been extensively investigated. MATERIALS AND METHODS: We analyzed the expression of 384 miRNAs using TaqMan microRNA assay in a training series of 10 gastric MALT lymphomas, 3 chronic gastritis and 2 reactive lymph nodes...
January 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28029188/a-novel-isolation-protocol-and-probe-based-rt-pcr-for-diagnosis-of-gastric-infections-with-the-zoonotic-pathogen-helicobacter-suis
#9
Caroline Blaecher, Eva Bauwens, Alfred Tay, Fanny Peters, Sylvia Dobbs, John Dobbs, André Charlett, Richard Ducatelle, Freddy Haesebrouck, Annemieke Smet
BACKGROUND: Helicobacter suis is a very fastidious microorganism associated with gastritis, gastric ulcers, and mucosa-associated lymphoid tissue lymphoma in humans. In vitro isolation of this agent from human patients has so far been unsuccessful. MATERIALS AND METHODS: A probe-based real-time PCR (RT-PCR) for the rapid detection of H. suis in gastric biopsies was developed. Secondly, a mouse-passage-based protocol was optimized for isolation of low numbers of viable H...
December 28, 2016: Helicobacter
https://www.readbyqxmd.com/read/28028359/role-of-dupa-in-virulence-of-helicobacter-pylori
#10
REVIEW
Amin Talebi Bezmin Abadi, Guillermo Perez-Perez
Helicobacter pylori (H. pylori) is a gastric human pathogen associated with acute and chronic gastritis, 70% of all gastric ulcers, 85% of all duodenal ulcers, and both forms of stomach cancer, mucosal-associated lymphoid tissue (MALT) lymphoma and adenocarcinoma. Recently, attention has focused on possible relationship between presence of certain virulence factor and H. pylori-associated diseases. Some contradictory data between this bacterium and related disorders has been observed since not all the colonized individuals develop to severe disease...
December 14, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28018450/acute-gastritis-associated-with-epstein-barr-virus-infection-in-a-child
#11
Ji Mok Kim, Chun Woo Song, Kyu Sang Song, Jae Young Kim
Infectious mononucleosis is Epstein-Barr virus (EBV) inducing a self-limiting clinical syndrome characterized by fever, sore throat, hepatosplenomegaly, and generalized lymphadenopathy. Gastrointestinal symptoms of EBV infection are nonspecific and occur rarely. EBV inducing acute gastrointestinal pathology is poorly recognized without suspicion. Careful consideration is needed to diagnose gastric involvement of EBV infection including gastric lymphoma, gastric cancer, and gastritis. A few recent cases of gastritis associated with EBV infection have been reported in adolescents and adults...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/27991930/rho-gtpases-anti-or-pro-neoplastic-targets
#12
REVIEW
I Zandvakili, Y Lin, J C Morris, Y Zheng
Rho GTPases are critical signal transducers of multiple pathways. They have been proposed to be useful anti-neoplastic targets for over two decades, especially in Ras-driven cancers. Until recently, however, few in vivo studies had been carried out to test this premise. Several recent mouse model studies have verified that Rac1, RhoA, and some of their effector proteins such as PAK and ROCK, are likely anti-cancer targets for treating K-Ras-driven tumours. Other seemingly contradictory studies have suggested that at least in certain instances inhibition of individual Rho GTPases may paradoxically result in pro-neoplastic effects...
December 19, 2016: Oncogene
https://www.readbyqxmd.com/read/27990837/unusual-presentation-of-infection-by-helicobacter-pylori-gastritis-associated-with-russell-bodies-infrequent-and-poorly-understood-pathology
#13
Viviana Parra Vargas, Diego M Aponte, Eligio Antonio Álvarez
Russell bodies gastritis is a very rare disease, with few cases reported in literature, and characterized by the finding of plasma cells with eosinophilic intracytoplasmic inclusions in the gastric mucosa, called Mott cells. Although it has been partnered since its first description to Helicobacter pylori infection, it is important to considered differential diagnoses such as lymphoplasmacytic lymphoma, mucosa-associated lymphoid tissue (MALT) lymphoma, plasmacytoma and signet ring cell carcinom. In this case report, we address a patient with histologic confirmation and her follow up...
December 19, 2016: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/27986297/triple-synchronous-gastric-tumors-a-rare-combination-diffuse-adenocarcinoma-b-cell-malt-lymphoma-and-large-cell-neuroendocrine-carcinoma
#14
Marta Herreros-Villanueva, Luis Bujanda, Inés Gil, M Cristina Caballero, Angel Cosme
No abstract text is available yet for this article.
December 13, 2016: Gastroenterología y Hepatología
https://www.readbyqxmd.com/read/27968829/risk-population-of-helicobacter-pylori-infection-among-han-and-tibetan-ethnicities-in-western-china-a-cross-sectional-longitudinal-epidemiological-study
#15
Rui Wang, Ming-Guang Zhang, Xin-Zu Chen, Hao Wu
BACKGROUND: China has a high prevalence of Helicobacter pylori infection, with high mortality from gastric cancer. However, there is no established nationwide screening programme for the primary prevention of gastric cancer in China. This study aimed to investigate the prevalence of Helicobacter pylori infection in Sichuan province in western China and to identify high-risk subpopulations for screening. METHODS: A high-volume hospital-based cross-sectional study included symptomatic patients who underwent (14)C-urine breath tests from April, 2013, to March, 2014...
October 2016: Lancet
https://www.readbyqxmd.com/read/27957827/sanguinarine-inhibits-growth-and-invasion-of-gastric-cancer-cells-via-regulation-of-the-dusp4-erk-pathway
#16
Rui Zhang, Ge Wang, Peng-Fei Zhang, Jing Zhang, Yan-Xia Huang, Yun-Min Lu, Wei Da, Qun Sun, Jin-Shui Zhu
Sanguinarine, a bioactive benzophenanthridine alkaloid extracted from plants of the Papaveraceae family, has shown antitumour effects in multiple cancer cells. But the therapeutic effects and regulatory mechanisms of sanguinatine in gastric cancer (GC) remain elusive. This study was aimed to investigate the correlation of dual-specificity phosphatase 4 (DUSP4) expression with clinicopathologic features and overall survival in patients with GC and explore the effects of sanguinarine on tumour growth and invasion in GC cells (SGC-7901 and HGC-27) and underlying molecular mechanisms...
December 13, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27940463/characterization-of-the-cag-pathogenicity-island-in-helicobacter-pylori-from-naturally-infected-rhesus-macaques
#17
Emma C Skoog, Samuel L Deck, Hasan D Entwistle, Lori M Hansen, Jay V Solnick
Helicobacter pylori commonly infects the epithelial layer of the human stomach and in some individuals causes peptic ulcers, gastric adenocarcinoma or gastric lymphoma. Helicobacter pylori is a genetically diverse species, and the most important bacterial virulence factor that increases the risk of developing disease, versus asymptomatic colonization, is the cytotoxin associated gene pathogenicity island (cagPAI). Socially housed rhesus macaques are often naturally infected with H. pylori similar to that which colonizes humans, but little is known about the cagPAI...
December 2016: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/27930268/recombinant-bacillus-subtilis-spores-expressing-cholera-toxin-b-subunit-and-helicobacter-pylori-urease-b-confers-protection-against-h-pylori-in-mice
#18
Zhenwen Zhou, Hui Dong, Shuwen Yao, Yanmei Huang, Bingshao Liang, Yongqiang Xie, Yan Long, Jialiang Mai, Sitang Gong
Helicobacter pylori infection is associated with chronic gastritis, peptic ulcers, gastric cancer and mucosa-associated lymphoid tissue lymphoma. The limitations of current therapies for Helicobacter pylori infection include poor compliance and antibiotic resistance. Therefore, an effective anti-H. pylori vaccine would be an alternative or complement to antibiotic treatment. Urease B (UreB) is considered an ideal vaccine antigen against H. pylori infection. In this study, cholera toxin B subunit (CTB), a mucosal adjuvant, was used to enhance the immunogenicity of novel Bacillus subtilis spores vaccine that express CTB-UreB along with the B...
December 8, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27926494/p38-and-jnk-pathways-control-e-selectin-dependent-extravasation-of-colon-cancer-cells-by-modulating-mir-31-transcription
#19
Liang Zhong, Bryan Simoneau, Jacques Huot, Martin J Simard
Extravasation of circulating cancer cells is a key event of metastatic dissemination that is initiated by the adhesion of cancer cells to vascular endothelial cells. It requires the interaction between adhesion receptors such as E-selectin present on endothelial cells and their ligands on cancer cells. Notably, E-selectin influences the metastatic potential of breast, bladder, gastric, pancreatic, and colorectal carcinoma as well as of leukemia and lymphoma. Here, we show that E-selectin expression induced by the pro-inflammatory cytokine IL-1β is directly and negatively regulated by miR-31...
December 2, 2016: Oncotarget
https://www.readbyqxmd.com/read/27923651/a-cheap-simple-high-throughput-method-for-screening-native-helicobacter-pylori-urease-inhibitors-using-a-recombinant-escherichia-coli-its-validation-and-demonstration-of-pistacia-atlantica-methanolic-extract-effectivity-and-specificity
#20
Natalie Amar, Avi Peretz, Yoram Gerchman
Helicobacter pylori is the most frequent and persistent bacterial infection worldwide, and a risk factor for active gastritis, peptic ulcers, mucosa-associated lymphoid tissue lymphoma, and gastric cancer. Although combined antibiotics treatment is effective cases of antibiotic resistance are reported at an alarming rate. The H. pylori urease enzyme is essential for the bacteria establishment in the gastric mucosa, resulting urease inhibitors being sought after as effective and specific anti- H. pylori treatment...
December 5, 2016: Journal of Microbiological Methods
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