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screening gastric cancer

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https://www.readbyqxmd.com/read/28292264/establishment-of-patient-derived-gastric-cancer-xenografts-a-useful-tool-for-preclinical-evaluation-of-targeted-therapies-involving-alterations-in-her-2-met-and-fgfr2-signaling-pathways
#1
Haiyong Wang, Jun Lu, Jian Tang, Shitu Chen, Kuifeng He, Xiaoxia Jiang, Weiqin Jiang, Lisong Teng
BACKGROUND: Targeted therapies are emerging treatment options for gastric cancer (GC). Patient-derived tumor xenograft(PDX) models of GC closely retain the features of the original clinical cancer, offering a powerful tool for preclinical drug efficacy testing. This study aimed to establish PDX GC models, and explore therapeutics targeting Her2, MET(cMet), and FGFR2, which may assist doctor to select the proper target therapy for selected patients. METHODS: GC tissues from 32 patients were collected and implanted into immuno-deficient mice...
March 14, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28288195/long-term-trends-and-survival-analysis-of-esophageal-and-gastric-cancer-in-yangzhong-1991-2013
#2
Zhaolai Hua, Xianzhi Zheng, Hengchuan Xue, Jianming Wang, Jun Yao
OBJECTIVE: To describe the long-term trends of the incidence, mortality and survival of upper digestive tract cancers in a high-risk area of China. METHODS: We extracted esophageal and gastric cancer cases diagnosed from 1991 to 2013 through the Yangzhong Cancer Registry and calculated the crude and age-standardized incidence and mortality rates. Cancer trends were calculated using the Joinpoint Regression Program and were reported using the annual percentage change (APC)...
2017: PloS One
https://www.readbyqxmd.com/read/28279462/screening-and-preventive-strategies-in-esophagogastric-cancer
#3
REVIEW
Liam Zakko, Lori Lutzke, Kenneth K Wang
Gastric adenocarcinoma, esophageal adenocarcinoma, and esophageal squamous cell carcinoma are among the most prevalent and deadly of malignancies worldwide. Screening and prevention programs will be critical to finally improving outcomes in these diseases. For gastric adenocarcinoma, screening in high-risk populations has significantly reduced mortality. More research is needed on screening high-risk individuals in low-risk populations. For esophageal adenocarcinoma, work is needed to develop efficient and effective techniques in mass screening programs...
April 2017: Surgical Oncology Clinics of North America
https://www.readbyqxmd.com/read/28279154/receiver-operating-characteristic-analysis-of-prediction-for-gastric-cancer-development-using-serum-pepsinogen-and-helicobacter-pylori-antibody-tests
#4
Chisato Hamashima, Shizuka Sasazuki, Manami Inoue, Shoichiro Tsugane
BACKGROUND: Chronic Helicobacter pylori infection plays a central role in the development of gastric cancer as shown by biological and epidemiological studies. The H. pylori antibody and serum pepsinogen (PG) tests have been anticipated to predict gastric cancer development. METHODS: We determined the predictive sensitivity and specificity of gastric cancer development using these tests. Receiver operating characteristic analysis was performed, and areas under the curve were estimated...
March 9, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28275685/the-clinical-evidence-linking-helicobacter-pylori-to-gastric-cancer
#5
REVIEW
Steven F Moss
Gastric cancer has long been recognized to be accompanied and preceded by chronic gastritis, lasting decades. Arguably, the most important development in our understanding of gastric cancer pathogenesis over the past 50 years has been the realization that, for most cases of gastric cancer, Helicobacter pylori is the cause of the underlying gastritis. Gastritis can promote gastric carcinogenesis, typically via the Correa cascade of atrophic gastritis, intestinal metaplasia, and dysplasia. Nested case-control studies have shown that H pylori infection increases the risk of gastric cancer significantly, both of the intestinal and diffuse subtypes, and that H pylori is responsible for approximately 90% of the world's burden of noncardia gastric cancer...
March 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28256037/novel-small-molecule-inhibiting-cdcp1-pkc%C3%AE-pathway-reduces-tumor-metastasis-and-proliferation
#6
Katsuhiko Nakashima, Takamasa Uekita, Shigenobu Yano, Jun-Ichi Kikuchi, Ruri Nakanishi, Nozomi Sakamoto, Keisuke Fukumoto, Akihiro Nomoto, Keisuke Kawamoto, Takashi Shibahara, Hideki Yamaguchi, Ryuichi Sakai
CUB domain-containing protein-1 (CDCP1) is a trans-membrane protein predominantly expressed in various cancer cells and involved in tumor progression. CDCP1 is phosphorylated at tyrosine residues in the intracellular domain by Src family kinases and recruits PKCδ to the plasma membrane through tyrosine phosphorylation-dependent association with the C2 domain of PKCδ, which in turn induces a survival signal in an anchorage-independent condithion. In this study, we utilized our cell-free screening system to identify a small compound, glycoconjugated palladium complex (Pd-Oqn), which significantly inhibited the interaction between the C2 domain of PKCδ and phosphorylated CDCP1...
March 3, 2017: Cancer Science
https://www.readbyqxmd.com/read/28251999/the-serum-pepsinogen-test-as-a-predictor-of-kazakh-gastric-cancer
#7
Wei Juan Cai, Liang Yin, Qiang Kang, Zu Chen Zeng, Shao Liang Wang, Jiang Cheng
Gastric cancer (GC) is one of the most common malignant tumors and the Kazakh population in Xinjiang has been reported to be one of the highest incidence of GC in the world. Serum pepsinogen (PG) test provides a valuable method for detecting GC, but little study about the role of PG in Kazakh GC. Therefore, we aimed to investigate the role of PG in Kazakh GC and to elucidate the usefulness of the serum PG test method. The serum PG concentration were measured using the flow fluorescence assay and ELISA methods in patients with superficial gastritis, atrophic gastritis and GC...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28250898/gastric-intestinal-metaplasia-is-associated-with-gastric-dysplasia-but-is-inversely-correlated-with-esophageal-dysplasia
#8
Justin M Gomez, James T Patrie, Wissam Bleibel, Jeanetta W Frye, Bryan G Sauer, Vanessa M Shami, Edward B Stelow, Christopher A Moskaluk, Andrew Y Wang
AIM: To determine which clinical factors might be associated with gastric intestinal metaplasia (IM) in a North American population. METHODS: Pathology and endoscopy databases at an academic medical center were reviewed to identify patients with and without gastric IM on biopsies for a retrospective cohort study. Patient demographics, insurance status, and other clinical factors were reviewed. RESULTS: Four hundred and sixty-eight patients with gastric IM (mean age: 61...
February 16, 2017: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28250897/overdiagnosis-of-gastric-cancer-by-endoscopic-screening
#9
REVIEW
Chisato Hamashima
Gastric cancer screening using endoscopy has recently spread in Eastern Asian countries showing increasing evidence of its effectiveness. However, despite the benefits of endoscopic screening for gastric cancer, its major harms include infection, complications, false-negative results, false-positive results, and overdiagnosis. The most serious harm of endoscopic screening is overdiagnosis and this can occur in any cancer screening programs. Overdiagnosis is defined as the detection of cancers that would never have been found if there is no cancer screening...
February 16, 2017: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28246088/adiposity-and-cancer-at-major-anatomical-sites-umbrella-review-of-the-literature
#10
Maria Kyrgiou, Ilkka Kalliala, Georgios Markozannes, Marc J Gunter, Evangelos Paraskevaidis, Hani Gabra, Pierre Martin-Hirsch, Konstantinos K Tsilidis
Objective To evaluate the strength and validity of the evidence for the association between adiposity and risk of developing or dying from cancer.Design Umbrella review of systematic reviews and meta-analyses.Data sources PubMed, Embase, Cochrane Database of Systematic Reviews, and manual screening of retrieved references.Eligibility criteria Systematic reviews or meta-analyses of observational studies that evaluated the association between indices of adiposity and risk of developing or dying from cancer...
February 28, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28243543/development-and-validation-of-a-36-gene-sequencing-assay-for-hereditary-cancer-risk-assessment
#11
Valentina S Vysotskaia, Gregory J Hogan, Genevieve M Gould, Xin Wang, Alex D Robertson, Kevin R Haas, Mark R Theilmann, Lindsay Spurka, Peter V Grauman, Henry H Lai, Diana Jeon, Genevieve Haliburton, Matt Leggett, Clement S Chu, Kevin Iori, Jared R Maguire, Kaylene Ready, Eric A Evans, Hyunseok P Kang, Imran S Haque
The past two decades have brought many important advances in our understanding of the hereditary susceptibility to cancer. Numerous studies have provided convincing evidence that identification of germline mutations associated with hereditary cancer syndromes can lead to reductions in morbidity and mortality through targeted risk management options. Additionally, advances in gene sequencing technology now permit the development of multigene hereditary cancer testing panels. Here, we describe the 2016 revision of the Counsyl Inherited Cancer Screen for detecting single-nucleotide variants (SNVs), short insertions and deletions (indels), and copy number variants (CNVs) in 36 genes associated with an elevated risk for breast, ovarian, colorectal, gastric, endometrial, pancreatic, thyroid, prostate, melanoma, and neuroendocrine cancers...
2017: PeerJ
https://www.readbyqxmd.com/read/28240510/gastric-cancer-and-gastrointestinal-stromal-tumors-could-be-causes-of-non-helicobacter-pylori-non-nsaids-peptic-ulcers-in-thailand
#12
Pattama Kiatpapan, Ratha korn Vilaichone, Peranart Chotivitayatarakorn, Varocha Mahachai
Background and aim: H. pylori and nonsteroidal anti-inflammatory drugs (NSAIDs) remain the major causes of peptic ulcer disease. Nevertheless, non- H. pylori non-NSAIDs peptic ulcers or idiopathic peptic ulcer disease (IPUD) constitute a growing problem associated with many complications. Gastric cancer and gastrointestinal stromal tumor (GIST) have also been reported as a cause of IPUD. This study was aimed to investigate prevalence and clinical characteristics of IPUD in Thailand. Materials and Methods: Clinical information, histological features, endoscopic findings, history of H...
January 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28240020/prognostic-factors-for-survival-in-patients-with-gastric-cancer-using-a-random-survival-forest
#13
Davoud Adham, Nategh Abbasgholizadeh, Malek Abazari
Background: Gastric cancer is the fifth most common cancer and the third top cause of cancer related death with about 1 million new cases and 700,000 deaths in 2012. The aim of this investigation was to identify important factors for outcome using a random survival forest (RSF) approach. Materials and Methods: Data were collected from 128 gastric cancer patients through a historical cohort study in Hamedan-Iran from 2007 to 2013. The event under consideration was death due to gastric cancer. The random survival forest model in R software was applied to determine the key factors affecting survival...
January 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28238770/association-between-screen-detected-gallstone-disease-and-cancer-in-a-cohort-study
#14
Daniel Mønsted Shabanzadeh, Lars Tue Sørensen, Torben Jørgensen
BACKGROUND & AIMS: Knowledge of temporal associations between screen-detected gallstone disease and specific cancers is limited. The objective of this study was to determine if screen-detected gallstones or cholecystectomy is associated with occurrence of gastrointestinal and non-gastrointestinal cancers. METHODS: We performed a cohort study of 3 randomly selected groups from the general population of Copenhagen. Participants (n=5928) were examined from 1982 through 1992 and underwent abdominal ultrasound examination to detect gallstone disease, but were not informed of their gallstone status...
February 23, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28231524/discovery-of-novel-cdk8-inhibitors-using-multiple-crystal-structures-in-docking-based-virtual-screening
#15
Taijin Wang, Zhuang Yang, Yongguang Zhang, Wei Yan, Fang Wang, Linhong He, Yuanyuan Zhou, Lijuan Chen
The cyclin dependent kinase CDK8, along with Med12 and Med13, form the kinase module of the Mediator complex. CDK8 expression associates with the activation of β-catenin in colon and gastric cancers. Herein, we applied docking-based virtual screening (VS) using the multiple crystal structures to identify several potent CDK8 inhibitors. The appropriate use of multiple crystal structures obtained a better enrichment of CDK8 conformations to cope with the protein flexibility. Later on, the 2D similarity search was used to find the derivatives of the high inhibitory CDK8 inhibitors we discovered by VS...
March 31, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28228619/a-case-of-anti-3-hydroxy-3-methylglutaryl-coenzyme-a-reductase-antibody-positive-paraneoplastic-necrotizing-myopathy-associated-with-advanced-gastric-cancer-that-responded-to-intravenous-immunoglobulin-therapy
#16
Tomohisa Yamaguchi, Akiko Matsunaga, Masamichi Ikawa, Norimichi Shirafuji, Ichizo Nishino, Tadanori Hamano
A 49-year-old woman presented with progressive muscle weakness of the limbs and dysphagia. Her past and family medical history were unremarkable and she did not take statins or any other medications. Laboratory tests showed that serum levels of creatine kinase were elevated (13,565 IU/l) and anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) antibodies were detected in the serum. Other autoantibodies to the nuclear (ANA), RNP, aminoacyl-tRNA synthetases (ARS), and signal recognition particle (SRP) were negative...
February 22, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/28224267/selection-of-dna-aptamers-for-extra-cellular-domain-of-human-epidermal-growth-factor-receptor-2-to-detect-her2-positive-carcinomas
#17
A Sett, B B Borthakur, U Bora
BACKGROUND: Human epidermal growth factor receptor 2 (Her2, an orphan receptor of ErbB family) is considered as an important biomarker as it plays a key role in the development and progression of aggressive types of breast, ovarian, stomach and gastric cancer. In the present study, we developed novel DNA aptamers against the extra-cellular domain (ECD) of Her2 protein for detection of Her2-positive carcinomas. METHODS: We cloned and expressed Her2-ECD protein in E...
February 21, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28222666/dynamic-tracing-for-epidermal-growth-factor-receptor-mutations-in-urinary-circulating-dna-in-gastric-cancer-patients
#18
Xiu-Qin Shi, Wen-Hua Xue, Song-Feng Zhao, Xiao-Jian Zhang, Wukong Sun
The mutations of epidermal growth factor receptor are detected in gastric cancer, indicating its suitability as a target for receptor tyrosine kinase inhibitors, as well as a marker for clinical outcome of chemotherapeutic treatments. However, extraction of quality tumor tissue for molecular processes remains challenging. Here, we aimed to examine the clinical relevance of urinary cell-free DNA as an alternative tumor material source used specifically for monitoring epidermal growth factor receptor mutations...
February 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28219322/a-screening-program-to-test-and-treat-for-helicobacter-pylori-infection-cost-utility-analysis-by-age-sex-and-ethnicity
#19
Andrea M Teng, Giorgi Kvizhinadze, Nisha Nair, Melissa McLeod, Nick Wilson, Tony Blakely
BACKGROUND: The World Health Organization recommends all countries consider screening for H. pylori to prevent gastric cancer. We therefore aimed to estimate the cost-effectiveness of a H. pylori serology-based screening program in New Zealand, a country that includes population groups with relatively high gastric cancer rates. METHODS: A Markov model was developed using life-tables and morbidity data from a national burden of disease study. The modelled screening program reduced the incidence of non-cardia gastric cancer attributable to H...
February 20, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28219205/-preparation-of-chaperone-antigen-peptide-vaccine-derived-from-human-gastric-cancer-stem-cells-and-its-immune-function
#20
Y Q Jiang, Q M Guo, X P Xu, J C Liang, Y Y He, S H An, F Su, C Y Li, C X Huang
Objective: To explore the method of extracting chaperone antigen peptide complexes from gastric cancer stem cells and its immune function. Methods: Gastric cancer stem cells and gastric cancer cells were screened by low temperature ultrasonic lysis. After salting out and dialysis, the lysate supernatant was processed with SDS-PAGE to analyze the expression of chaperone antigen peptide complexes, and then was separated and purified with CNBr-activated SepharoseTM 4B. Reverse high pressure liquid chromatography (HPLC), SDS-PAGE and Western blotting were used to analyze the purity and nature of the acquired albumen...
February 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
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