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gastric cancer and early detection

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https://www.readbyqxmd.com/read/28643393/prevalence-and-dynamics-of-helicobacter-pylori-infection-during-childhood
#1
REVIEW
Beatriz Zabala Torrres, Yalda Lucero, Anne J Lagomarcino, Andrea Orellana-Manzano, Sergio George, Juan P Torres, Miguel O'Ryan
INTRODUCTION: Long-term persistent Helicobacter pylori infection has been associated with ulceropeptic disease and gastric cancer. Although H. pylori is predominantly acquired early in life, a clear understanding of infection dynamics during childhood has been obfuscated by the diversity of populations evaluated, study designs, and methods used. AIM: Update understanding of true prevalence of H. pylori infection during childhood, based on a critical analysis of the literature published in the past 5 years...
June 23, 2017: Helicobacter
https://www.readbyqxmd.com/read/28643319/-progress-of-the-application-of-optical-coherence-tomography-in-gastrointestinal-tumor-surgery
#2
Yongsheng Li, Hao Liu, Haipeng Huang, Yu Zhu, Haijun Deng, Jiang Yu, Site Luo, Li Huo, Li Lin, Huikai Xie, Guoxin Li
Optical coherence tomography (OCT) is a real-time, cross-sectional optical imaging technology. It is analogous to ultrasonography, except that OCT uses light waves instead of sound waves, and can provide three-dimensional morphological images of living tissues with a micrometer resolution. Through the use of endoscopes, needles, catheters and laparoscopes, OCT has demonstrated tremendous imaging potential in tumor surgery. The current studies suggest that OCT has potential for clinical applications in the following fields of gastrointestinal tumor surgery: (1) Early tumor detection and diagnosis: OCT can distinguish differences between polyp tissue, normal tissue and malignant tissue...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28639135/histological-verification-of-the-usefulness-of-magnifying-endoscopy-with-narrow-band-imaging-for-horizontal-margin-diagnosis-of-differentiated-type-early-gastric-cancers
#3
Makomo Makazu, Kingo Hirasawa, Chiko Sato, Ryosuke Ikeda, Takehide Fukuchi, Yasuaki Ishii, Ryosuke Kobayashi, Hiroaki Kaneko, Masataka Taguri, Yoko Tateishi, Yoshiaki Inayama, Shin Maeda
BACKGROUND: Although magnifying endoscopy with narrow-band imaging (ME-NBI) can help identify the horizontal margin (HM) of early gastric cancer (EGC), little is known about the factors that can clarify the HM by using ME-NBI. We aimed to characterize the pathological features of lesions in which the HM was identified using ME-NBI. METHODS: The HMs of 639 differentiated-type EGCs treated with endoscopic submucosal dissection or surgery were analyzed using conventional endoscopy and ME-NBI...
June 21, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28624843/expressions-of-ras-homolog-gene-family-member-a-rhoa-and-cyclooxygenase-2-cox-2-proteins-in-early-gastric-cancer-and-their-role-in-the-development-of-gastric-cancer
#4
Li Song, Yali Guo, Baohong Xu
BACKGROUND This research focused on detecting the expressions of RhoA and cyclooxygenase-2 (COX-2) proteins in early gastric cancer tissues and to explore their role in the development of gastric cancer. MATERIAL AND METHODS Surgically resected gastric cancer tissues and the paired normal paracancerous tissues were collected from 26 patients with early gastric cancer from January 2015 to November 2015. The expressions of RhoA and COX-2 proteins were detected by using RT-PCR and immunohistochemistry techniques, respectively...
June 18, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28619681/gastric-carcinoma-after-sleeve-gastrectomy-for-obesity
#5
Miljana Vladimirov, Uwe Hesse, Hubert J Stein
Obesity is associated with an increased risk of cancer development in the upper gastrointestinal tract. We present the case of a female patient with gastric carcinoma after sleeve gastrectomy. Before bariatric surgery, one rationale for performing routine endoscopy is to detect clinically relevant conditions with the potential to change the surgical procedure. After bariatric surgery in symptomatic patients and in patients with unspecific symptoms, early upper endoscopy should be performed to detect potential carcinomas of the upper gastrointestinal tract...
April 25, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28616610/current-approaches-to-gastric-cancer-in-peru-and-mexico
#6
REVIEW
Erlan Santos
In Peru, the incidence of gastric cancer is reported to be around 15.8 per 100,000 inhabitants and it is the second most common oncological disease in men and the third one in women. Additionally, a high mortality index was reported, especially among poor people. To address this issue, in 2008, Peru initiated several insurance treatment plans of oncological diseases with promising results. In Mexico, there is a high predominance of gastric cancer in male gender compared to female gender, even reaching a 2/1 ratio, and the detection rate of early gastric cancer is low (10% to 20%) which results in a mainly palliative treatment with an overall survival rate in 5 years about 10% to 15% only...
2017: Translational Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28616598/laparoscopic-sentinel-node-navigation-surgery-for-early-gastric-cancer
#7
REVIEW
Shinichi Kinami, Takeo Kosaka
Currently, the most accurate method for identifying lymph node metastasis is intraoperative diagnosis by sentinel node (SN) biopsy. Based on the SNNS study-a recent large-scale, nationwide, multicenter prospective study-the SN concept seems to be scientifically valid in patients with early gastric cancer. SN biopsy is a multistep technique consisted of six essential elements: indication, the selection of a tracer, a proper tracer injection method, the objective detection of SNs, a reliable biopsy technique, and the precise detection of nodal metastasis...
2017: Translational Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28616085/helicobacter-pylori-infection-old-and-new
#8
REVIEW
S Diaconu, A Predescu, A Moldoveanu, C S Pop, C Fierbințeanu-Braticevici
Helicobacter pylori is a spiral-shaped bacterium that grows in the digestive tract and may be present in more than half of the world's population. The clinical features of Helicobacter pylori range from asymptomatic gastritis to gastrointestinal malignancy. Mucosa-associated lymphoid tissue (MALT) lymphoma is a low-grade B-cell marginal zone lymphoma and Helicobacter pylori has been detected in more than 75% of the patients with MALT lymphoma. Many tests for the detection of Helicobacter pylori are available, including antibody tests, urea breath tests, stool antigen tests and endoscopic biopsies...
April 2017: Journal of Medicine and Life
https://www.readbyqxmd.com/read/28612708/contribution-of-matrix-metalloproteinases-1-genotypes-to-gastric-cancer-susceptibility-in-taiwan
#9
Mei-Due Yang, Kuo-Cheng Lin, Meng-Chun Lu, Long-Bin Jeng, Chieh-Lun Hsiao, Te-Cheng Yueh, Chun-Kai Fu, Hsin-Ting Li, Shiou-Ting Yen, Chia-Wen Lin, Cin-Wun Wu, Su-Yi Pang, Da-Tian Bau, Fuu-Jen Tsai
Expression of matrix metalloproteinase-1 (MMP1), an interstitial collagenase regulating the extracellular matrix, plays a major role in carcinogenesis of gastric cancer, a leading cause of death worldwide. In literature, the single-nucleotide polymorphism (SNP) promoter -1607 1G/2G (rs1799750) at the MMP1 gene promoter has been reported to alter its own transcription level. While the importance's of the genotype of MMP1 promoter -1607 has not yet been studied in gastric cancer in Taiwan, our aim was to investigate MMP1 promoter -1607 genotypes and gastric cancer (GC) susceptibility in central Taiwan population...
June 2017: BioMedicine
https://www.readbyqxmd.com/read/28603669/combining-multi-dimensional-data-to-identify-key-genes-and-pathways-in-gastric-cancer
#10
Wu Ren, Wei Li, Daguang Wang, Shuofeng Hu, Jian Suo, Xiaomin Ying
Gastric cancer is an aggressive cancer that is often diagnosed late. Early detection and treatment require a better understanding of the molecular pathology of the disease. The present study combined data on gene expression and regulatory levels (microRNA, methylation, copy number) with the aim of identifying key genes and pathways for gastric cancer. Data used in this study was retrieved from The Cancer Genomic Atlas. Differential analyses between gastric cancer and normal tissues were carried out using Limma...
2017: PeerJ
https://www.readbyqxmd.com/read/28596674/follow-up-after-curative-resection-for-gastric-cancer-is-it-time-to-tailor-it
#11
EDITORIAL
Paolo Aurello, Niccolò Petrucciani, Laura Antolino, Diego Giulitti, Francesco D'Angelo, Giovanni Ramacciato
There is still no consensus on the follow-up frequency and regimen after curative resection for gastric cancer. Moreover, controversy exists regarding the utility of follow-up in improving survival, and the recommendations of experts and societies vary considerably. The main reason to establish surveillance programs is to diagnose tumor recurrence or metachronous cancers early and to thereby provide prompt treatment and prolong survival. In the setting of gastric malignancies, other reasons have been put forth: (1) the detection of adverse effects of a previous surgery, such as malnutrition or digestive sequelae; (2) the collection of data; and (3) the identification of psychological and/or social problems and provision of appropriate support to the patients...
May 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28586056/microrna-497-acts-as-a-tumor-suppressor-in-gastric-cancer-and-is-downregulated-by-dna-methylation
#12
Jichao Liu, Yongshuang Li, Ying Zou, Jiakui Zhang, Jiaxiang An, Jiao Guo, Minghui Ma, Dongqiu Dai
Gastric cancer (GC) is one of the most common malignant tumors in the world and microRNAs (miRNAs) play an important role in GC. In this study, we found miR‑497 played an important role and served as a novel biomarker in GC. Quantitative real-time PCR (qRT-PCR) was used to measure the miR‑497 expression in GC cell lines and 86 paired GC samples and we also analyzed its correlation with GC clinicopathological parameters. A series of cellular function experiments were applied to validate the effects of miR‑497 on GC...
June 6, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28583526/gene-expression-profiling-of-peripheral-blood-from-kidney-transplant-recipients-for-the-early-detection-of-digestive-system-cancer
#13
M Kusaka, M Okamoto, M Takenaka, H Sasaki, N Fukami, K Kataoka, T Ito, T Kenmochi, K Hoshinaga, R Shiroki
BACKGROUND: Kidney transplant recipients are at increased risk of developing cancer in comparison with the general population. To effectively manage post-transplantation malignancies, it is essential to proactively monitor patients. A long-term intensive screening program was associated with a reduced incidence of cancer after transplantation. This study evaluated the usefulness of the gene expression profiling of peripheral blood samples obtained from kidney transplant patients and adopted a screening test for detecting cancer of the digestive system (gastric, colon, pancreas, and biliary tract)...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28580735/ddah1-mediates-gastric-cancer-cell-invasion-and-metastasis-via-wnt-%C3%AE-catenin-signaling-pathway
#14
Jianxin Ye, Jie Xu, Yun Li, Qiang Huang, Jinsheng Huang, Jinzhou Wang, Wenjing Zhong, Xinjian Lin, Wannan Chen, Xu Lin
Gastric cancer (GC) represents the fourth most common malignant neoplasm and the second leading cause of cancer death. Despite therapeutic advances in recent decades, the clinical outcome remains dismal owing to the fact that most GC patients show advanced disease at diagnosis and current chemotherapy only confers a modest survival advantage. Identification of key molecular signaling pathways involved in gastric carcinogenesis and progression would aid in early diagnosis and provide a rational design for targeted therapies in selected patients with advanced GC, to improve their outcome...
June 5, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28575250/characterization-of-tissue-chromogranin-a-cga-immunostaining-and-clinicohistopathological-changes-for-the-125-chinese-patients-with-primary-small-cell-carcinoma-of-the-esophagus
#15
J W Ku, D Y Zhang, X Song, X M Li, X K Zhao, S Lv, S J Hu, R Cheng, F Y Zhou, H F Wu, L D Wang
The rarity of primary small cell carcinoma of the esophagus (PSCE) has limited the clinical feature and survival analysis with large sample size. Tissue chromogranin A (CgA) protein expression has been reported to be a useful biomarker for diagnosing PSCE. Interestingly, recent studies have indicated tissue CgA as a significant prognostic marker in multiple human cancers, but without PSCE. The present study, thus, was undertaken to characterize the clinicopathological changes and to evaluate the associations of tissue CgA expression with clinical response on Chinese PSCE patients...
August 1, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/28574630/high-mobility-group-box-1-contributes-tumor-angiogenesis-under-interleukin-8-mediation-during-gastric-cancer-progression
#16
Hye Won Chung, Jong-Baeck Lim
Many soluble factors are involved in tumor angiogenesis. Thus, it is valuable to identify novel soluble factors for effective control of tumor angiogenesis in gastric cancer (GC). We investigated the role of extracellular high-mobility group box-1 (HMGB1) and its associated soluble factors in tumor angiogenesis of gastric cancer (GC). Clinically, we measured serum levels of HMGB1 and GC-associated cytokines/chemokines using GC serum samples (n=120), and calculated microvessel density (MVD) by performing CD34 immuno-staining using human GC tissues (n=27)...
June 2, 2017: Cancer Science
https://www.readbyqxmd.com/read/28569272/gastric-adenocarcinoma
#17
REVIEW
Jaffer A Ajani, Jeeyun Lee, Takeshi Sano, Yelena Y Janjigian, Daiming Fan, Shumei Song
Gastric cancers, with gastric adenocarcinoma (GAC) as the most common histological type, impose a considerable global health burden. Although the screening strategies for early detection have been shown to be successful in Japan and South Korea, they are either not implemented or not feasible in most of the world, leading to late diagnosis in most patients. Helicobacter pylori infection contributes to the development of many endemic GACs, and pre-emptive eradication or early treatment of this bacterial infection might provide effective primary prevention...
June 1, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28552126/hue-texture-embedded-region-based-model-for-magnifying-endoscopy-with-narrow-band-imaging-image-segmentation-based-on-visual-features
#18
Xiaoqi Liu, Chengliang Wang, Jianying Bai, Guobin Liao, Yanjun Zhao
BACKGROUND AND OBJECTIVE: Magnification endoscopy with narrow-band imaging (ME-NBI) has become a feasible tool for detecting diseases within the human gastrointestinal tract, and is more applied by physicians to search for pathological abnormalities with gastric cancer such as precancerous lesions, early gastric cancer and advanced cancer. In order to improve the reliability of diseases detection, there is a need for applying or proposing computer-assisted methodologies to efficiently analyze and process ME-NBI images...
July 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28551616/measuring-intragastric-tumor-markers-in-gastric-cancer-patients-a-systematic-literature-review-on-significance-and-reliability
#19
REVIEW
Edoardo Virgilio, Antonella Proietti, Rosaria D'Urso, Patrizia Cardelli, Enrico Giarnieri, Monica Montagnini, Maria Rosaria Giovagnoli, Paolo Mercantini, Genoveffa Balducci, Marco Cavallini
As of 2017, no serum tumor marker has shown high levels of sensitivity or specificity for early detection, classification, staging, prediction and prognosis of patients affected by gastric cancer. In this regard, since 1975 several authors have investigated the gastric juice or gastric lavage of patients with gastric adenocarcinoma in order to determine the concentrations of intragastric tumor markers and discover the perfect antigen for this cancer. To date, however, a systematic review of the literature on intragastric tumor markers is still unreported...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28548950/enolase-1-stimulates-glycolysis-to-promote-chemoresistance-in-gastric-cancer
#20
Xiaoling Qian, Wenxia Xu, Jinye Xu, Qiqi Shi, Jiaqiu Li, Yu Weng, Zhinong Jiang, Lifeng Feng, Xian Wang, Jianwei Zhou, Hongchuan Jin
Chemotherapy is the major choice for the cancer treatment of early and advanced stages. However, intrinsic or acquired drug resistance significantly restricts the clinical efficacy of chemotherapy. It is critical to develop novel approaches to detect and overcome drug resistance. In this study, we demonstrated that accelerated glycolysis played a pivotal role in both intrinsic and acquired cisplatin-resistance of gastric cancer cells. The metabolic reprogramming of cisplatin-resistant cells was characterized by increased glycolysis dependence...
May 15, 2017: Oncotarget
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