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https://www.readbyqxmd.com/read/28425656/considering-the-esophagogastric-junction-as-a-zone
#1
Shin Ichihara, Noriya Uedo, Takuji Gotoda
Siewert's classification of adenocarcinoma of the esophagogastric junction (EGJ) classifies tumors anatomically for determining the appropriate surgical technique. According to this classification, a type II tumor, true carcinoma of the cardia, is defined as a cancer within 1 cm proximal to 2 cm distal of the EGJ. Histological analysis indicates that the cardiac gland is present with a high degree of frequency between 1-2 cm to the gastric side and 1-2 cm to the esophageal side of the EGJ, which means that this zone can be considered as neither the stomach nor the esophagus but rather as a third zone known as the 'EGJ zone'...
April 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28424913/can-further-gastrectomy-be-avoided-in-patients-with-incomplete-endoscopic-resection
#2
Hee Sung Kim, Ji Yong Ahn, Seon Ok Kim, Byung Sik Kim
BACKGROUND: Endoscopic resection (ER) is a widely accepted treatment for patients with early gastric cancer (EGC) with no lymph node metastasis. Occasionally, however, additional surgery is needed due to an incomplete resection. The purpose of this study was to detect clinical factors which might identify patients at greater risk of additional surgery after ER and to suggest an alternative treatment strategy for these patients. METHODS: This study retrospectively analyzed 350 patients with gastric cancer who underwent radical gastrectomy and lymphadenectomy after ER in a single institution between July 2004 and July 2014...
April 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28416746/different-long-term-oncologic-outcomes-after-radical-surgical-resection-for-neuroendocrine-carcinoma-and-adenocarcinoma-of-the-stomach
#3
Jian-Wei Xie, Jun Lu, Jian-Xian Lin, Chao-Hui Zheng, Ping Li, Jia-Bin Wang, Qi-Yue Chen, Long-Long Cao, Mi Lin, Ru-Hong Tu, Chang-Ming Huang
PURPOSE: To explore differences in long-term outcomes between gastric neuroendocrine carcinoma (GNEC) and gastric adenocarcinoma (GAC). METHODS: One hundred GNEC patients and 3089 GAC patients were enrolled. Differences in long-term outcomes between the groups were analyzed by 1:2 propensity score matching. RESULTS: Statistically significant differences between the groups were noted in terms of gender, American Society of Anesthesiologists score, tumor size, T stage, N stage, TNM stage and surgical approach...
February 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415835/the-role-of-chemotherapy-in-unresectable-or-metastatic-adenocarcinoma-of-the-stomach-and-gastroesophageal-junction
#4
Mustafa Bozkurt, Fatemeh G Amlashi, Mariela Blum Murphy
Gastric cancer including gastro-esophageal junction adenocarcinomas are most challenging and deadly cancers of the gastrointestinal tract. Gastric cancer has a fatality-to-case ratio of 0.66, translating that nearly two thirds of newly diagnosed patients will have disseminated disease and in need of systemic therapy (1). Advanced gastric adenocarcinoma (AGC) is a heterogenous disease with differences in geographical distribution, histopathology, and molecular subtypes. Fluoropyrimidines (5-FU, S-1, and capecitabine), platinum compounds (cisplatin, oxaliplatin), taxanes (paclitaxel, docetaxel), and the topoisomerase inhibitory irinotecan are active drugs against AGC...
April 14, 2017: Minerva Chirurgica
https://www.readbyqxmd.com/read/28414996/a-case-of-multiple-synchronous-quadruple-cancers-of-the-stomach-sigmoid-colon-rectum-and-pancreas
#5
Atsushi Nanashima, Tetsuro Tominaga, Takashi Nonaka, Kouki Wakata, Masaki Kunizaki, Shuichi Tobinaga, Yorihisa Sumida, Shigekazu Hidaka, Naoe Kinoshita, Terumitsu Sawai, Takeshi Nagayasu
INTRODUCTION: Multiple primary neoplasms are relatively rare, but their incidence has increased because of aging and improvements in diagnostic imaging. PRESENTATION OF CASE: A 67-year-old man presented with epigastric pain. On upper gastrointestinal endoscopy, an ulcer was seen at the gastric angle, and biopsy showed moderately differentiated adenocarcinoma (AC). Colonoscopy demonstrated a 15-mm lesion in the sigmoid colon and a submucosal lesion in the lower rectum...
April 2, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28411279/characterization-and-interspecies-scaling-of-rhtnf-%C3%AE-pharmacokinetics-with-minimal-physiologically-based-pharmacokinetic-mpbpk-models
#6
Xi Chen, Debra C DuBois, Richard R Almon, William J Jusko
Tumor necrosis factor-α (TNF-α) is a soluble cytokine and target of specific monoclonal antibodies (mAbs) and other biological agents used for the treatment of inflammatory diseases. These biologics exert their pharmacological effects through binding and neutralizing TNF-α, and thus prevent TNF-α from interacting with its cell surface receptors. The magnitude of pharmacological effects is governed not only by the pharmacokinetics of mAbs, but also the kinetic fate of TNF-α. We have examined the pharmacokinetics of rhTNF-α in rats at low doses and quantitatively characterized its pharmacokinetic features with a minimal physiologically-based pharmacokinetic (mPBPK) model...
April 14, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28408643/gastrin-induces-parathyroid-hormone-like-hormone-expression-in-gastric-parietal-cells
#7
Asma Al Menhali, Theresa M Keeley, Elise S Demitrack, Linda C Samuelson
Parietal cells play a fundamental role in stomach maintenance, not only by creating a pathogen-free environment through the production of gastric acid, but also by secreting growth factors important for homeostasis of the gastric epithelium. The gastrointestinal hormone gastrin is known to be a central regulator of both parietal cell function and gastric epithelial cell proliferation and differentiation. Our previous gene expression profiling studies of mouse stomach identified parathyroid hormone-like hormone (PTHLH) as a potential gastrin-regulated gastric growth factor...
April 13, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28407783/exosomal-transfer-of-tumor-associated-macrophage-derived-mir-21-confers-cisplatin-resistance-in-gastric-cancer-cells
#8
Peiming Zheng, Lei Chen, Xiangliang Yuan, Qin Luo, Yi Liu, Guohua Xie, Yanhui Ma, Lisong Shen
BACKGROUND: Cisplatin-based chemotherapy is frequently used to treat advanced gastric cancer (GC). However, the resistance often occurs with the mechanisms being not well understood. Recently, emerging evidence indicates that tumor-associated macrophages (TAMs) play an important role in chemoresistance of cancer. As the important mediators in intercellular communications, exosomes secreted by host cells mediate the exchange of genetic materials and proteins to be involved in tumor aggressiveness...
April 13, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28407687/cytokeratin-19-promoter-directs-the-expression-of-cre-recombinase-in-various-epithelia-of-transgenic-mice
#9
Gui-Feng Zhao, Shuang Zhao, Jia-Jie Liu, Ji-Cheng Wu, Hao-Yu He, Xiao-Qing Ding, Xue-Wen Yu, Ke-Qiang Huang, Zhi-Jie Li, Hua-Chuan Zheng
Cytokeratin 19 (K19) is expressed in various differentiated cells, including gastric, intestinal and bronchial epithelial cells, and liver duct cells. Here, we generated a transgenic mouse line, K19-Cre, in which the expression of Cre recombinase was controlled by the promoter of K19. To test the tissue distribution and excision activity of Cre recombinase, K19-Cre transgenic mice were bred with Rosa26 reporter strain and a mouse strain that carries PTEN conditional alleles (PTENLoxp/Loxp). At mRNA level, Cre was strongly expressed in the stomach, lung and intestine, while in stomach, lung, and liver at protein level...
March 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28405154/breast-cancer-metastasizing-to-the-stomach-mimicking-primary-gastric-cancer-a-case-report
#10
Kwangil Yim, Sang Mi Ro, Jieun Lee
Breast cancer with stomach metastasis rare with an incidence of 1% or less among metastatic breast cancer patients. We experienced a case of breast cancer metastasizing to the stomach in 65-year-old female patient. She experienced dyspepsia and poor oral intake before visiting the clinic. Diffuse infiltration with nodular mucosal thickening of the stomach wall was observed, suggesting advanced gastric cancer based on gross endoscopic finding. Spread of poorly cohesive tumor cells in the gastric mucosa observed upon hematoxylin and eosin stain resembled signet ring cell carcinoma, but diffuse positive staining for GATA3 in immunohistochemical stain allowed for a conclusive diagnosis of breast cancer metastasizing to the stomach...
March 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28398409/-macrocytosis-of-red-blood-cells-and-early-arthritis-positive-for-rheumatoid-factor-such-as-initial-manifestations-of-a-neuroendocrine-gastrin-secreting-gastric-tumor
#11
Ciro Manzo, Maria Natale, Gennaro Mossetti, Aniello Piscopo
Neuroendocrine tumors (NETs) represent uncommon tumors arising from the excessive proliferation of enterochromaffin-like (ECL) cells (so-called Kulchitsky cell). Gastric NETs (GNET) represent less than 2% of all NETs and less than 1% of all stomach neoplasms. In particular, gastric NETs type 1 (associated to chronic atrophic gastritis and hypergastrinaemia) is the more frequent one, accounting for 70-80% of all GNET. A macrocytic anemia is a frequent manifestation of GNET type 1. The possibility that macrocytic anemia appear during therapy with methotrexate (MTX) is widely documented...
March 2017: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/28395384/laparoscopic-and-luminal-endoscopic-cooperative-surgery-can-be-a-standard-treatment-for-submucosal-tumors-of-the-stomach-a-retrospective-multicenter-study
#12
Tatsuo Matsuda, Souya Nunobe, Toshiyuki Kosuga, Hiroshi Kawahira, Noriyuki Inaki, Shuji Kitashiro, Nobutsugu Abe, Isao Miyashiro, Sayaka Nagao, Masahiko Nishizaki, Naoki Hiki
Background and study aims We have developed a combined laparoscopic and luminal endoscopic surgery technique for resection of gastric submucosal tumors (SMTs) that can be performed without excessive resection of the stomach. In a multicenter retrospective study we aimed to evaluate the feasibility and safety of laparoscopic and endoscopic cooperative surgery (LECS) for gastric SMT resection. Patients and methods Between October 2007 and December 2011, 126 patients with gastric SMTs underwent LECS at 8 institutions...
April 10, 2017: Endoscopy
https://www.readbyqxmd.com/read/28393434/multivisceral-transplantation-for-abdominal-tumors-in-children-a-single-center-experience-and-review-of-the-literature
#13
Eliza Lee, Nicole Hodgkinson, Rima Fawaz, Khashayar Vakili, Heung Bae Kim
Standard management of intra-abdominal pediatric solid tumors requires complete resection. However, tumors with multiple organ and vascular involvement present a unique surgical challenge. We conducted a retrospective chart review of four patients, aged 2-14 years, undergoing MVT for intra-abdominal tumors with significant involvement of the visceral arteries and/or portomesenteric venous system at our institution. Indications for MVT included hepatocellular carcinoma, inflammatory myofibroblastic tumor, and two cases of hepatoblastoma...
April 9, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28391172/large-bronchogenic-cyst-of-stomach-a-case-report
#14
Amine Chhaidar, Houssem Ammar, Nihed Abdessayed, Mohamed Azzaza, Rahul Gupta, Nefis Abdennaceur, Ahlem Bdioui, Moncef Mokni, Ali Ben Ali
INTRODUCTION: Bronchogenic cysts are congenital cysts arising as an abnormal budding from primitive tracheobronchial tree. They are lined by pseudostratified columnar or cuboidal ciliated epithelium and contain smooth muscle fibers, submucosal bronchial glands and/or cartilage. They are most frequently located in the mediastinum or the lung parenchyma. Intramural occurrence of bronchogenic cyst in the gastric wall is very rare. PRESENTATION OF CASE: We present a case of 65-year-old lady with a 7×8cm lesion in the gastric cardia suspicious of gastrointestinal stromal tumor...
March 23, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28390977/helicobacter-pylori-genotypes-determine-risk-of-non-cardia-gastric-cancer-and-intestinal-or-diffuse-type-gc-in-ardabil-a-very-high-risk-area-in-northwestern-iran
#15
Esmat Abdi, Saeid Latifi-Navid, Saber Zahri, Abbas Yazdanbod, Reza Safaralizadeh
Frequency of the Helicobacter pylori vacA gene polymorphism and its association with gastric cancer (GC) was assessed in Ardabil, a very high-risk area in Northwestern Iran. We determined the presence of the H. pylori 16S rDNA gene and the vacA s-, m-, i-, and d-region genotypes in DNA from fresh gastric biopsies. Patients with GC were classified based on both the anatomic site and the histopathologic type of tumor Of 135 patients, including 57 with non-atrophic gastritis (NAG) and 78 with GC, 103 were infected by H...
April 5, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28390866/activation-of-transforming-growth-factor-beta-1-signaling-in-gastric-cancer-associated-fibroblasts-increases-their-motility-via-expression-of-rhomboid-5-homolog-2-and-ability-to-induce-invasiveness-of-gastric-cancer-cells
#16
Takatsugu Ishimoto, Keisuke Miyake, Tannistha Nandi, Masakazu Yashiro, Nobuyuki Onishi, Kie Kyon Huang, Suling Joyce Lin, Ramnarayanan Kalpana, Su Ting Tay, Yuka Suzuki, Byoung Chul Cho, Daisuke Kuroda, Kota Arima, Daisuke Izumi, Masaaki Iwatsuki, Yoshifumi Baba, Eiji Oki, Masayuki Watanabe, Hideyuki Saya, Kosei Hirakawa, Hideo Baba, Patrick Tan
BACKGROUND & AIMS: Fibroblasts that interact with cancer cells are called cancer-associated fibroblasts (CAFs)-they promote progression of different tumor types. We investigated the characteristics and functions of CAFs in diffuse-type gastric cancers (DGCs) by analyzing features of their genome and gene expression patterns. METHODS: We isolated CAFs and adjacent non-cancer fibroblasts (NFs) from 110 GC tissues from patients who underwent gastrectomy in Japan from 2008 through 2016...
April 5, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28389797/laparoscopic-subtotal-gastrectomy-for-advanced-gastric-cancer-technical-aspects-and-surgical-nutritional-and-oncological-outcomes
#17
Masaya Nakauchi, Koichi Suda, Kenichi Nakamura, Susumu Shibasaki, Kenji Kikuchi, Tetsuya Nakamura, Shinichi Kadoya, Yoshinori Ishida, Kazuki Inaba, Keizo Taniguchi, Ichiro Uyama
BACKGROUND: Higher morbidity in total gastrectomy than in distal gastrectomy has been reported, but laparoscopic subtotal gastrectomy (LsTG) has been reported to be safe and feasible in early gastric cancer (GC). We determined the surgical, nutritional and oncological outcomes of LsTG for advanced gastric cancer (AGC). METHODS: Of the 816 consecutive patients with GC who underwent radical gastrectomy at our institution between 2008 and 2012, 253 who underwent curative laparoscopic gastrectomy (LG) for AGC were enrolled...
April 7, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28389380/etumortype-an-algorithm-of-discriminating-cancer-types-for-circulating-tumor-cells-or-cell-free-dnas-in-blood
#18
Jinfeng Zou, Edwin Wang
With the technology development on detecting circulating tumor cells (CTCs) and cell-free DNAs (cfDNAs) in blood, serum, and plasma, non-invasive diagnosis of cancer becomes promising. A few studies reported good correlations between signals from tumor tissues and CTCs or cfDNAs, making it possible to detect cancers using CTCs and cfDNAs. However, the detection cannot tell which cancer types the person has. To meet these challenges, we developed an algorithm, eTumorType, to identify cancer types based on copy number variations (CNVs) of the cancer founding clone...
April 4, 2017: Genomics, Proteomics & Bioinformatics
https://www.readbyqxmd.com/read/28386965/perioperative-chemotherapy-versus-postoperative-chemoradiotherapy-in-patients-with-resectable-gastric-gastroesophageal-junction-adenocarcinomas-a-survival-analysis-of-5058-patients
#19
Timothy L Fitzgerald, Jimmy T Efird, Nelly Bellamy, Suzanne M Russo, Charulata Jindal, Catalina Mosquera, Elizabeth G Holliday, Tithi Biswas
BACKGROUND: Both perioperative chemotherapy (PECT) and postoperative chemoradiotherapy (POCRT) have a significant survival advantage over surgery alone for the treatment of patients with gastric cancer. However, to the best of our knowledge, these regimens have not been compared in a randomized clinical trial. The purpose of the current observational study was to compare overall survival among patients receiving PECT versus POCRT for the treatment of gastric/gastroesophageal junction (GEJ) adenocarcinomas...
April 6, 2017: Cancer
https://www.readbyqxmd.com/read/28382457/expression-and-function-of-uc-160-a-transcribed-ultraconserved-region-in-gastric-cancer
#20
Ririno Honma, Keisuke Goto, Naoya Sakamoto, Yohei Sekino, Kazuhiro Sentani, Naohide Oue, Wataru Yasui
BACKGROUND: Transcribed ultraconserved regions (T-UCRs) are a novel class of noncoding RNAs that are highly conserved among the orthologous regions in most vertebrates. It has been reported that T-UCRs have distinct signatures in human cancers. We previously discovered the downregulation of T-UCR expression in gastric cancer (GC), indicating that T-UCRs could play an important role in GC biology. Uc.160+, a T-UCR reported to be downregulated in human cancer, has not been examined in GC...
April 5, 2017: Gastric Cancer
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