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https://www.readbyqxmd.com/read/29150923/pkg-ii-effectively-reversed-egf-induced-protein-expression-alterations-in-human-gastric-cancer-cell-lines
#1
Hai Qian, Yan Tao, Lu Jiang, Ying Wang, Ting Lan, Min Wu, Ji Pang, Kwaku Appiah-Kubi, Yongchang Chen, Yan Wu
Epidermal growth factor receptor (EGFR) plays an important role in gastric cancer (GC) progression. Our previous data demonstrated that type II cGMP-dependent protein kinase (PKG II) could block the EGF-EGFR axis as well as down-stream signaling pathways for example, MAPK, PI3K and PLC in gastric cancer cells. However, the exact mechanisms of PKG II against cancer remain unclear. Therefore, the present work was to address the above question. Human gastric cancer cell line AGS was infected with adenoviral construct encoding cDNA of PKG II (Ad-PKG II) to up-regulate PKG II and then treated with 8-pCPT-cGMP...
November 18, 2017: Cell Biology International
https://www.readbyqxmd.com/read/29150634/incomplete-resection-and-linitis-plastica-are-factors-for-poor-survival-after-extended-multiorgan-resection-in-gastric-cancer-patients
#2
Hua Xiao, Min Ma, Yanping Xiao, Yongzhong Ouyang, Ming Tang, Kunyan Zhou, Yuan Hong, Bo Tang, Chaohui Zuo
The aim of this retrospective study was to analyze the morbidity, mortality, and survival rates of extended multiorgan resection (EMR) for locally advanced gastric cancer patients compared to gastrectomy alone and a palliative operation. 893 locally advanced gastric cancer patients without distant metastasis had surgery including gastrectomy alone (GA group, n = 798), EMR resection (EMR group, n = 75), and palliative operation (palliative gastrectomy or gastrojejunostomy (PO group, n = 20)). Postoperative mortality and complication rates in the EMR group were significantly higher than in the GA group (2...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150418/immune-enhancing-formulas-for-patients-with-cancer-undergoing-esophagectomy-systematic-review-protocol
#3
Astrid Naranjo, Elizabeth Isenring, Laisa Teleni
BACKGROUND: Adult patients with an esophageal cancer can potentially be compromised with postoperative leaks or fistulae if patients' nutritional status is in a vulnerable stage. Currently in Australia, there is a growing need for clinicians to know whether use of immune-enhancing formulas (IEFs) containing Arg, omega-3, and RNA are a cost-effective approach compared with isonitrogenous-isocaloric formulas to reduce postoperative infectious complications in esophagectomy patients. Since IEFs may carry higher costs, this has led to inconsistencies in practice among clinicians and hospitals...
November 17, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/29149920/gastrointestinal-and-hepatic-disease-in-the-inflammatory-myopathies
#4
REVIEW
Chiranjeevi Gadiparthi, Amneet Hans, Kyle Potts, Mohammad K Ismail
Although muscle weakness is the pathognomonic feature of idiopathic inflammatory myopathies, systemic organ involvement is not uncommon. The gastrointestinal and hepatic manifestations are well known. Oropharyngeal dysphagia is the most common gastrointestinal symptom and can be severe. Gastric and small intestinal motility disorders, including chronic intestinal pseudo-obstruction, celiac disease, and inflammatory bowel disease have been described. Comprehensive cancer screening is warranted soon after the diagnosis of inflammatory myopathies due to high risk of occult malignancies...
February 2018: Rheumatic Diseases Clinics of North America
https://www.readbyqxmd.com/read/29149107/treponema-denticola-chymotrypsin-like-proteinase-may-contribute-to-orodigestive-carcinogenesis-through-immunomodulation
#5
Mikko T Nieminen, Dyah Listyarifah, Jaana Hagström, Caj Haglund, Daniel Grenier, Dan Nordström, Veli-Jukka Uitto, Marcela Hernandez, Tülay Yucel-Lindberg, Taina Tervahartiala, Mari Ainola, Timo Sorsa
BACKGROUND: Periodontal pathogens have been linked to oral and gastrointestinal (orodigestive) carcinogenesis. However, the exact mechanisms remain unknown. Treponema denticola (Td) is associated with severe periodontitis, a chronic inflammatory disease leading to tooth loss. The anaerobic spirochete Td is an invasive bacteria due to its major virulence factor chymotrypsin-like proteinase. Here we aimed to investigate the presence of Td chymotrypsin-like proteinase (Td-CTLP) in major orodigestive tumours and to elucidate potential mechanisms for Td to contribute to carcinogenesis...
November 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29148252/sex-hormone-binding-globulin-shbg-is-a-potential-early-diagnostic-biomarker-for-gastric-cancer
#6
Chao-Wen Cheng, Che-Chang Chang, Yudha Nur Patria, Ruei-Ting Chang, Yun-Ru Liu, Fu-An Li, Hsiu-Ming Shih, Ching-Yu Lin
The use of blood plasma biomarkers in gastric cancer (GC) management is limited due to a lack of reliable biomarkers. An LC-MS/MS assay and a bioinformatic analysis were performed to identify blood plasma biomarkers in a GC discovery cohort. The data obtained were verified and validated by western blotting and an ELISA in an independent study cohort. A label-free quantification analysis of the MS data using PEAKS7 software found that four plasma proteins of apolipoprotein C-1, gelsolin, sex hormone-binding globulin (SHBG), and complement component C4-A were significantly overexpressed in GC patients...
November 17, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/29148176/differential-proteomic-analysis-reveals-protein-networks-and-pathways-that-may-contribute-to-helicobacter-pylori-fkbp-type-ppiase-associated-gastric-diseases
#7
Yanmei Zhu, Yuehua Gong, Aodi Li, Moye Chen, Dan Kang, Jun Liu, Yuan Yuan
PURPOSE: Though Helicobacter pylori (H. pylori) has been classified as class I carcinogen, key virulence factor generated by H. pylori that causes gastric cancer remains to be fully determined. Recently, we identified a gastric cancer-associated H. pylori gene, peptidylprolyl isomerase-FK506 binding protein (PPIase-FKBP), and showed that PPIase-FKBP was capable of inducing oncogenic transformation of gastric epithelial cells. But its mechanism was unclear. EXPERIMENTAL DESIGN: We carried out a comparative proteomic analysis of human gastric epithelial cells that either express PPIase-FKBP or green fluorescent protein (GFP) using two-dimensional (2-D) gel electrophoresis and then matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS/MS)...
November 16, 2017: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/29148016/association-of-xpg-gene-rs751402-polymorphism-with-gastric-cancer-risk-a-meta-analysis-in-the-chinese-population
#8
Jun Liang, Ya-Yun Xu, Cheng Zhang, Qing-Rong Xia
BACKGROUND: Previous studies have revealed a conflicting relationship of xeroderma pigmentosum group G (XPG) gene polymorphism with gastric cancer (GC) risk. To our knowledge, this is the first meta-analysis to investigate the association between rs751402 mutation located on the XPG promoter region and GC risk. METHODS: We undertook a meta-analysis by identifying relevant articles from the PubMed, Web of Science and China National Knowledge Infrastructure (CNKI) databases on February 28, 2017...
November 9, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/29147877/efficacy-and-safety-of-fully-covered-self-expanding-metal-stents-for-malignant-esophageal-obstruction
#9
Hoonsub So, Ji Yong Ahn, Seungbong Han, Kyoungwon Jung, Hee Kyong Na, Jeong Hoon Lee, Kee Wook Jeong, Do Hoon Kim, Kee Don Choi, Ho June Song, Gin Hyug Lee, Hwoon-Yong Jung
BACKGROUND: Malignant dysphagia can result in poor nutritional status with severe weight loss. Rapid relief from dysphagia can be achieved with esophageal self-expanding metal stents (SEMSs), a minimally invasive method. In this study, we evaluated the usefulness of SEMSs for malignant dysphagia. METHODS: Between 2012 and 2015, 119 patients with malignant dysphagia underwent esophageal SEMS insertion with endoscopic assistance. Their demographics and clinical outcomes were collected...
November 17, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29147652/identification-of-potent-chloride-intracellular-channel-protein-1-inhibitors-from-traditional-chinese-medicine-through-structure-based-virtual-screening-and-molecular-dynamics-analysis
#10
Wei Wang, Minghui Wan, Dongjiang Liao, Guilin Peng, Xin Xu, Weiqiang Yin, Guixin Guo, Funeng Jiang, Weide Zhong, Jianxing He
Chloride intracellular channel 1 (CLIC1) is involved in the development of most aggressive human tumors, including gastric, colon, lung, liver, and glioblastoma cancers. It has become an attractive new therapeutic target for several types of cancer. In this work, we aim to identify natural products as potent CLIC1 inhibitors from Traditional Chinese Medicine (TCM) database using structure-based virtual screening and molecular dynamics (MD) simulation. First, structure-based docking was employed to screen the refined TCM database and the top 500 TCM compounds were obtained and reranked by X-Score...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29147610/host-immune-response-index-in-gastric-cancer-identified-by-comprehensive-analyses-of-tumor-immunity
#11
Charny Park, Junhun Cho, Jeeyun Lee, So Young Kang, Ji Yeong An, Min Gew Choi, Jun Ho Lee, Tae Sung Sohn, Jae Moon Bae, Sung Kim, Seung Tae Kim, Se Hoon Park, Joon Oh Park, Won Ki Kang, Insuk Sohn, Sin Ho Jung, Myung-Soo Kang, Kyoung-Mee Kim
Tumor infiltrating lymphocytes (TIL) in Epstein-Barr virus (EBV)-associated/microsatellite-unstable (MSI) gastric carcinomas (GC) constitute immune-active principal cellular components of tumor microenvironment and contribute to better prognosis. With the remarkable success of cancer immunotherapies, there is an urgent need for a comprehensive understanding of tumor-immune interactions in patients with GC in the context of host immune response. To identify GC subtype-specific immune response gene set, we tested differentially expressed genes for MSI and EBV+ GC subtypes in randomly selected test set (n = 278) in merged ACRG-SMC microarray and TCGA RNA sequencing data set...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29147601/tumor-infiltrating-%C3%AE-%C3%AE-t-cells-predict-prognosis-and-adjuvant-chemotherapeutic-benefit-in-patients-with-gastric-cancer
#12
Jieti Wang, Chao Lin, He Li, Ruochen Li, Yifan Wu, Hao Liu, Heng Zhang, Hongyong He, Weijuan Zhang, Jiejie Xu
Purpose : Tumor-infiltrating γδT cells (γδTILs) have different prognostic value and functions among various cancers. The aim of the present study was to evaluate the effect of γδTILs in gastric cancer. Patients and methods : A discovery set (n = 190) and a validation set (n = 273) were involved in this study. Patients with TNM II and III disease were used to predict response to 5-fluorouracil (5-FU)-based adjuvant chemotherapy (ACT) in both sets. γδTILs were defined as intense (γδT cells≥ 5/HPF) versus nonintense (γδT cells<5/HPF)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29147491/augmented-expression-levels-of-lncrnas-eccebpa-and-uca1-in-gastric-cancer-tissues-and-their-clinical-significance
#13
Mojdeh Nasrollahzadeh-Khakiani, Modjtaba Emadi-Baygi, Parvaneh Nikpour
Objectives: As the second cause of cancer death, gastric cancer (GC) is one of the eminent dilemmas all over the world, therefore investigating the molecular mechanisms involved in this cancer is pivotal. Unrestricted proliferation is one of the characteristics of cancerous cells, which is due to deficiency in cell regulatory systems. Long non-coding RNAs (lncRNAs) have emerged as critical regulators of the epigenome. lncRNA extra coding CEBPA (ecCEBPA) is involved in DNA methylation...
October 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29144989/cysteine-dioxygenase-1-mediates-erastin-induced-ferroptosis-in-human-gastric-cancer-cells
#14
Shihui Hao, Jiang Yu, Wanming He, Qiong Huang, Yang Zhao, Bishan Liang, Shuyi Zhang, Zhaowei Wen, Shumin Dong, Jinjun Rao, Wangjun Liao, Min Shi
BACKGROUND: Ferroptosis is a recently discovered form of iron-dependent nonapoptotic cell death. It is characterized by loss of the activity of the lipid repair enzyme, glutathione peroxidase 4 (GPX4), and accumulation of lethal reactive lipid oxygen species. However, we still know relatively little about ferroptosis and its molecular mechanism in gastric cancer (GC) cells. Here, we demonstrate that erastin, a classic inducer of ferroptosis, induces this form of cell death in GC cells and that cysteine dioxygenase 1 (CDO1) plays an important role in this process...
November 13, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/29144413/epstein-barr-virus-hijacks-dna-damage-response-transducers-to-orchestrate-its-life-cycle
#15
REVIEW
Pok Man Hau, Sai Wah Tsao
The Epstein-Barr virus (EBV) is a ubiquitous virus that infects most of the human population. EBV infection is associated with multiple human cancers, including Burkitt's lymphoma, Hodgkin's lymphoma, a subset of gastric carcinomas, and almost all undifferentiated non-keratinizing nasopharyngeal carcinoma. Intensive research has shown that EBV triggers a DNA damage response (DDR) during primary infection and lytic reactivation. The EBV-encoded viral proteins have been implicated in deregulating the DDR signaling pathways...
November 16, 2017: Viruses
https://www.readbyqxmd.com/read/29143985/silencing-of-col1a2-col6a3-and-thbs2-inhibits-gastric-cancer-cell-proliferation-migration-and-invasion-while-promoting-apoptosis-through-the-pi3k-akt-signaling-pathway
#16
Ran Ao, Lin Guan, Ying Wang, Jia-Ni Wang
This study explores the effect of COL1A2, COL6A3, and THBS2 gene silencing on proliferation, migration, invasion, and apoptosis of gastric cancer cells through the PI3K-Akt signaling pathway. The gastric cancer microarray expression data (GSE19826, GSE79973, and GSE65801) was analyzed. Gastric cancer tissues and corresponding adjacent normal tissues were extracted from patients. Positive expression rate of PI3K, Akt, and p-Akt was measured with immunohistochemistry. Two cell lines, BGC-823 and SGC-7901, were transfected and cells were grouped into blank, negative control, COL1A2-shRNA, COL6A3-shRNA, and THBS2-shRNA groups...
November 16, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29143893/the-role-of-systemic-therapy-in-resectable-gastric-and-gastro-oesophageal-junction-cancer
#17
REVIEW
Elizabeth Cartwright, David Cunningham
Approximately 20% of patients with cancer of the stomach or gastro-oesophageal junction (GOJ) present with resectable disease. Long-term outcome after surgery alone in these patients is poor, and a combined treatment approach is the standard of care. The two approaches to managing patients with cancer of the GOJ are perioperative chemotherapy or preoperative chemoradiotherapy. Based upon the most recent evidence, patients treated with a perioperative approach and deemed suitable for a triplet regimen should be considered for pre- and post-operative FLOT (5-fluorouracil [5-FU], leucovorin, oxaliplatin and docetaxel) and those suitable for a doublet regimen should be considered for a fluoropyrimidine/platinum combination such as capecitabine and oxaliplatin...
November 16, 2017: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/29143776/gastric-cancer-cell-glycosylation-as-a-modulator-of-the-erbb2-oncogenic-receptor
#18
Henrique O Duarte, Meritxell Balmaña, Stefan Mereiter, Hugo Osório, Joana Gomes, Celso A Reis
Aberrant expression and hyperactivation of the human epidermal growth factor receptor 2 (ErbB2) constitute crucial molecular events underpinning gastric neoplastic transformation. Despite ErbB2 extracellular domain being a well-known target for glycosylation, its glycosylation profile and the molecular mechanisms through which it actively tunes tumorigenesis in gastric cancer (GC) cells remain elusive. We aimed at disclosing relevant ErbB2 glycan signatures and their functional impact on receptor's biology in GC cells...
October 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29142602/combined-aspirin-and-apatinib-treatment-suppresses-gastric-cancer-cell-proliferation
#19
Wei Zhang, Yongsheng Tan, Heping Ma
Gastric cancer (GC), one of the types of tumor most prone to malignancy, is characterized by high lethality. Numerous molecular mediators of GC have been identified, including transcription factors, signaling molecules and non-coding RNAs. Recently, inhibition of angiogenesis has emerged as a potential strategy for GC therapy. In the present study, the levels of vascular endothelial growth factor (VEGF), peroxisome proliferator-activated receptor-α (PPARα) and miR-21 in GC patients and individuals without cancer, and the correlation between VEGF and miR-21, and PPARα and miR-21 expression were analyzed...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29142476/clinical-and-pathological-characterization-of-epstein-barr-virus-associated-gastric-carcinomas-in-portugal
#20
Joana Ribeiro, Andreia Oliveira, Mariana Malta, Claudia Oliveira, Fernanda Silva, Ana Galaghar, Luís Pedro Afonso, Maria Cassiano Neves, Rui Medeiros, Pedro Pimentel-Nunes, Hugo Sousa
AIM: To determine the prevalence of Epstein-Barr virus (EBV)-associated gastric carcinomas in the North Region of Portugal and to study its clinicopathological characteristics. METHODS: We have performed a retrospective study including a total of 179 consecutive patients with gastric cancer (GC) submitted to gastrectomy during 2011 at the Portuguese Oncology Institute of Porto. Clinical and pathological data was collected from individual clinical records and inserted on a database with unique codification...
October 28, 2017: World Journal of Gastroenterology: WJG
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