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https://www.readbyqxmd.com/read/28214334/autophagy-impairment-by-helicobacter-pylori-induced-methylation-silencing-of-map1lc3av1-promotes-gastric-carcinogenesis
#1
Jibran Sualeh Muhammad, Sohachi Nanjo, Takayuki Ando, Satoshi Yamashita, Takao Maekita, Toshikazu Ushijima, Yoshiaki Tabuchi, Toshiro Sugiyama
Helicobacter pylori (H. pylori) infection induces methylation silencing of tumor suppressor genes causing gastric carcinogenesis. Impairment of autophagy induces DNA damage leading to genetic instability and carcinogenesis. We aimed to identify whether H. pylori infection induced methylation silencing of host autophagy-related (Atg) genes, impairing autophagy and enhancing gastric carcinogenesis. Gastric mucosae were obtained from 41 gastric cancer patients and 11 healthy volunteers (8 H. pylori-uninfected and 3 H...
February 18, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28214253/long-noncoding-rna-linc00673-is-activated-by-sp1-and-exerts-oncogenic-properties-by-interacting-with-lsd1-and-ezh2-in-gastric-cancer
#2
Mingde Huang, Jiakai Hou, Yunfei Wang, Min Xie, Chenchen Wei, Fengqi Nie, Zhaoxia Wang, Ming Sun
Long noncoding RNAs (lncRNAs) have emerged as important regulators in a variety of human diseases, including cancers. However, the biological function of these molecules and the mechanisms responsible for their alteration in gastric cancer (GC) are not fully understood. In this study, we found that lncRNA LINC00673 is significantly upregulated in gastric cancer. Knockdown of LINC00673 inhibited cell proliferation and invasion and induced cell apoptosis, whereas LINC00673 overexpression had the opposite effect...
February 14, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28213789/a-novel-prognostic-scoring-system-based-on-preoperative-sarcopenia-predicts-the-long-term-outcome-for-patients-after-r0-resection-for-gastric-cancer-experiences-of-a-high-volume-center
#3
Zhi-Fang Zheng, Jun Lu, Chao-Hui Zheng, Ping Li, Jian-Wei Xie, Jia-Bin Wang, Jian-Xian Lin, Qi-Yue Chen, Mi Lin, Chang-Ming Huang
BACKGROUND: The relationship between sarcopenia and prognosis of gastric cancer (GC) is unclear. This study aimed to develop a prognostic scoring system combining sarcopenia with preoperative clinical parameters for patients with GC to predict 3-year overall survival (OS) and 3-year recurrence-free survival (RFS). METHODS: In this study, 924 patients with GC who underwent radical gastrectomy were retrospectively analyzed. The data were divided into a training set and a validation set...
February 17, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28213714/-current-biomarkers-for-gastric-cancer
#4
G B Baretton, D E Aust
Gastric cancer is still a relevant malignant disease with high morbidity and mortality. Current molecular genetic data show that gastric cancer, as other solid tumors as well, is not a single entity but consists of several molecular subtypes of gastric cancer with diverse biology. The increasing understanding of molecular pathways is the basis for innovative therapies. These either directly target altered signaling pathways or genes in tumor cells or as in immune checkpoint inhibitors, indirectly target tumor cells by blocking tumor-induced immune inhibition leading to improvement in the prognosis...
February 17, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28212532/long-non-coding-rna-ptenp1-functions-as-a-cerna-to-modulate-pten-level-by-decoying-mir-106b-and-mir-93-in-gastric-cancer
#5
Rupeng Zhang, Yuenan Guo, Zhenchi Ma, Gang Ma, Qiang Xue, Fangxuan Li, Liren Liu
Recent studies have shown that competing endogenous RNAs (ceRNAs) play an important role in the regulation of gene expression, and participate in a wide range of biological processes, including carcinogenesis. Long non-coding RNA PTENP1, the pseudogene of PTEN tumor suppressor, has been reported to exert its tumor suppressive function via modulation of PTEN expression in many malignancies. However, whether a PTENP1~miRNA~PTEN ceRNA network exists and how it functions in gastric cancer (GC) remains elusive. In order to identify and characterize the PTENP1~miRNA~PTEN ceRNA network in GC, we first determined PTENP1 levels in clinical GC samples and found that PTENP1 and PTEN were concurrently downregulated in these samples...
February 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212112/cancer-as-robust-intrinsic-state-shaped-by-evolution-a-key-issues-review
#6
Ruoshi Yuan, Xiaomei Zhu, Gaowei Wang, Site Li, Ping Ao
Cancer is a complex disease: its pathology cannot be properly understood in terms of independent players-genes, proteins, molecular pathways, or their simple combinations. This is similar to many-body physics of a condensed phase that many important properties are not determined by a single atom or molecule. The rapidly accumulating large 'omics' data also require a new mechanistic and global underpinning to organize for rationalizing cancer complexity. A unifying and quantitative theory was proposed by some of the present authors that cancer is a robust state formed by the endogenous molecular-cellular network, which is evolutionarily built for the developmental processes and physiological functions...
February 17, 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28211613/novel-anticarcinoembryonic-antigen-antibody-drug-conjugate-has-antitumor-activity-in-the-existence-of-soluble-antigen
#7
Daisuke Shinmi, Ryosuke Nakano, Keisuke Mitamura, Minami Suzuki-Imaizumi, Junko Iwano, Yuya Isoda, Junichi Enokizono, Yasuhisa Shiraishi, Emi Arakawa, Kazuma Tomizuka, Kazuhiro Masuda
Carcinoembryonic antigen (CEA) is a classic tumor-specific antigen that is overexpressed in several cancers, including gastric cancer. Although some anti-CEA antibodies have been tested, to the best of our knowledge, there are currently no clinically approved anti-CEA antibody therapies. Because of this, we have created the novel anti-CEA antibody, 15-1-32, which exhibits stronger binding to membrane-bound CEA on cancer cells than existing anti-CEA antibodies. 15-1-32 also shows poor affinity for soluble CEA; thus, the binding activity of 15-1-32 to membrane-bound CEA is not influenced by soluble CEA...
February 17, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28211282/signet-ring-cell-carcinoma-of-the-jejunum-an-uncommon-finding-within-the-reach-of-capsule-endoscopy
#8
José Francisco Juanmartiñena, Marta Montes, Ignacio Fernández-Urién
An 80 year-old female presented with ductal breast carcinoma (stage II) three years ago, complained of asthenia and iron-deficiency anemia. No diagnosis was obtained after conventional endoscopy and iron supplements were indicated. Ten months later visible digestive hemorrhage was presented. Upper and lower endoscopy was repeated but non-diagnosis was obtained. Thus, video capsule endoscopy was indicated identifying a stenotic lesion arising in the mucosa of distal jejunum. Histopathological examination revealed a poorly mucinous differentiated signet-ring cell adenocarcinoma with an intense peri-tumoral lymphoid (Crohn´s-like lymphoid reaction) and lympho-vascular infiltration with no nodal metastases (pT3N0;7ª edition TNM classification)...
February 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28210798/erratum-to-altered-intrinsic-brain-activity-after-chemotherapy-in-patients-with-gastric-cancer-a-preliminary-study
#9
Hyun Gi Kim, Na-Young Shin, Yunjin Bak, Kyung Ran Kim, Young-Chul Jung, Kyunghwa Han, Seung-Koo Lee, Soo Mee Lim
No abstract text is available yet for this article.
February 16, 2017: European Radiology
https://www.readbyqxmd.com/read/28210705/gastric-esd-may-be-useful-as-accurate-staging-and-decision-of-future-therapeutic-strategy
#10
Ai Fujimoto, Osamu Goto, Toshihiro Nishizawa, Yasutoshi Ochiai, Joichiro Horii, Tadateru Maehata, Teppei Akimoto, Satoshi Kinoshita, Seiji Sagara, Motoki Sasaki, Toshio Uraoka, Naohisa Yahagi
Background and study aims We sometimes perform gastric endoscopic submucosal dissection (ESD) for total pathologic diagnosis when preoperative diagnosis is difficult. In the present study we analyzed the treatment outcomes and adverse events of diagnostic ESD for early gastric cancer (EGC). Patients and methods We conducted a retrospective analysis of 18 consecutive cases of EGC in 18 patients with a suspected out-of-indication diagnosis who underwent diagnostic ESD, between June 2010 and November 2014...
February 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28210017/influence-of-prognostic-factors-for-recurrence-of-adenocarcinoma-of-the-stomach
#11
Indira Mehmedagic, Sefik Hasukic, Mirha Agic, Nedzad Kadric, Ismar Hasukic
INTRODUCTION: Gastric cancer is the second most important neoplasm in the world. Surgical resection is the treatment of choice for gastric cancer, and recognized by the International Union against Cancer (International Union Against Cancer - UICC) TNM classification of the parameters of the tumor and lymph node. Prognostic factors related to characteristics of the tumor by histopathologic findings have an impact on the planning of the operation. According to the results of most studies it is possible to predict survival and recurrence based on histological type and TNM classification of tumors on the one hand and the surgical procedure on the other...
December 2016: Medical Archives
https://www.readbyqxmd.com/read/28209952/-functional-results-of-digestive-tract-reconstruction-after-gastrectomy
#12
V V Оlекsеnко, S V Efetov, V A Zakharov, K A Aliyev, D M Al-Nsour
AIM: To substantiate and to prove the advantages of the new method of gastroplasty in comparison with traditional loop reconstruction of digestive tract after gastrectomy. MATERIAL AND METHODS: It was performed prospective comparative study of surgical treatment of 431 patients with gastric cancer who underwent gastrectomy with different variants of digestive tract reconstruction. The main group (146 patients) consisted of patients in whom original technique including establishment of food reservoir in initial jejunal part during reconstruction was applied...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28209749/efficacy-and-safety-of-folfiri-regimen-in-elderly-versus-nonelderly-patients-with-metastatic-colorectal-or-gastric-cancer
#13
Ji-Won Kim, Keun-Wook Lee, Kyu-Pyo Kim, Ju Hyun Lee, Yong Sang Hong, Jeong-Eun Kim, Sun Young Kim, Sook Ryun Park, Byung-Ho Nam, Sang-Hee Cho, Ik-Joo Chung, Young Suk Park, Ho-Suk Oh, Myung-Ah Lee, Hye Jin Kang, Young Iee Park, Eun-Kee Song, Hye Sook Han, Kyu Taeg Lee, Dong Bok Shin, Jung Hun Kang, Dae Young Zang, Jee Hyun Kim, Tae Won Kim
BACKGROUND: Irinotecan-based chemotherapy is a standard backbone of therapy in patients with metastatic colorectal cancer (CRC) or gastric cancer (GC). However, there is still a paucity of information concerning the efficacy and safety of irinotecan-based regimens in elderly patients. PATIENTS AND METHODS: Using the patient cohort (n = 1,545) from the UGT1A1 genotype study, we compared the efficacy and safety between elderly and nonelderly patients with metastatic CRC (n = 934) or GC (n = 611) who received first- or second-line FOLFIRI (irinotecan, leucovorin, and 5-fluorouracil) chemotherapy...
February 16, 2017: Oncologist
https://www.readbyqxmd.com/read/28209611/genetic-manipulation-of-helicobacter-pylori-virulence-function-by-host-carcinogenic-phenotypes
#14
Giovanni Suarez, Judith Romero-Gallo, Johanna C Sierra, M Blanca Piazuelo, Uma Krishna, Martin Alonso Gomez, Keith T Wilson, Richard M Peek
Helicobacter pylori is the strongest risk factor for gastric adenocarcinoma, yet only a minority of infected persons ever develop this malignancy. One cancer-linked locus is the cag type 4 secretion system (cagT4SS), which translocates an oncoprotein into host cells. A structural component of the cagT4SS is CagY, which become rapidly altered during in vivo adaptation in mice and rhesus monkeys, rendering the cagT4SS nonfunctional; however, these models rarely develop gastric cancer. We previously demonstrated that the H...
February 16, 2017: Cancer Research
https://www.readbyqxmd.com/read/28209556/palliation-of-malignant-gastroduodenal-obstruction-fluoroscopic-metallic-stent-placement-with-different-approaches
#15
Elif Bulut, Türkmen Çiftçi, Okan Akhan, Devrim Akıncı
PURPOSE: We aimed to evaluate the safety and effectiveness of fluoroscopy-guided gastroduodenal metallic stent placement with different approaches in malignant obstruction. METHODS: We retrospectively assessed 53 patients (33 men and 20 women; mean age, 58.7±15 years) who underwent stent placement between February 2004 and April 2014. All patients had unresectable tumors. The most common causes of obstruction were gastric (38%) and pancreatic cancers (36%). Uncovered self-expandable metallic stents (SEMS) were placed under fluoroscopic guidance...
February 17, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28209205/long-noncoding-agap2-as1-is-activated-by-sp1-and-promotes-cell-proliferation-and-invasion-in-gastric-cancer
#16
Fuzhen Qi, Xianghua Liu, Hao Wu, Xiang Yu, Chenchen Wei, Xiaodan Huang, Guozhong Ji, Fengqi Nie, Keming Wang
BACKGROUND: Long noncoding RNAs (lncRNAs) have emerged as important regulators of tumorigenesis and cancer progression. Recently, the lncRNA AGAP2-AS1 was identified as an oncogenic lncRNA in human non-small cell lung cancer (NSCLC) and its elevated expression was linked to NSCLC development and progression. However, the expression pattern and molecular mechanism of AGAP2-AS1 in gastric cancer (GC) have not been characterized. METHODS: Bioinformatic analysis was performed to determine AGAP2-AS1 expression levels in the GC and normal tissues using gene profiling data from the Gene Expression Omnibus...
February 16, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28209170/lincrnafezf1-as1-represses-p21-expression-to-promote-gastric-cancer-proliferation-through-lsd1-mediated-h3k4me2-demethylation
#17
Yan-Wen Liu, Rui Xia, Kai Lu, Min Xie, Fen Yang, Ming Sun, Wei De, Cailian Wang, Guozhong Ji
BACKGROUND: Although the prognosis of gastric cancer patients have a favorable progression, there are some patients with unusual patterns of locoregional and systemic recurrence. Therefore, a better understanding of early molecular events of the disease is needed. Current evidences demonstrate that long noncoding RNAs (lncRNAs) may be an important class of functional regulators involved in human gastric cancers development. Our previous studies suggest that HOTAIR contributes to gastric cancer development, and the overexpression of HOTAIR predicts a poor prognosis...
February 16, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28207963/nardilysin-promotes-hepatocellular-carcinoma-through-activation-of-signal-transducer-and-activator-of-transcription-3
#18
Yosuke Kasai, Kan Toriguchi, Etsuro Hatano, Kiyoto Nishi, Mikiko Ohno, Tomoaki Yoh, Keita Fukuyama, Takahiro Nishio, Masayuki Okuno, Keiko Iwaisako, Satoru Seo, Kojiro Taura, Masato Kurokawa, Makoto Kunichika, Shinji Uemoto, Eiichiro Nishi
Nardilysin (NRDC) is a metalloendopeptidase of the M16 family. We previously showed that NRDC activates inflammatory cytokine signaling, including interleukin-6-signal transducer and activator of transcription 3 (STAT3) signaling. NRDC has been implicated in the promotion of breast, gastric, and esophageal cancer, as well as the development of liver fibrosis. In this study, we investigated the role of NRDC in the promotion of hepatocellular carcinoma (HCC), both clinically and experimentally. We found that NRDC expression was up-regulated 3-fold in HCC tissue compared to the adjacent non-tumor liver tissue, which was confirmed by immunohistochemistry and western blotting...
February 16, 2017: Cancer Science
https://www.readbyqxmd.com/read/28207556/clinicopathological-characteristics-of-patients-who-underwent-additional-gastrectomy-after-incomplete-endoscopic-resection-for-early-gastric-cancer
#19
Jae Jin Hwang, Dong Ho Lee, Hyuk Yoon, Cheol Min Shin, Young Soo Park, Nayoung Kim
To evaluate the clinicopathological characteristics and factors that lead to residual tumors in patients who underwent additional gastrectomy for incomplete endoscopic resection (ER) for early gastric cancer (EGC).Between 2003 and 2013, the medical records of patients underwent additional gastrectomy after incomplete ER were retrospectively reviewed. Those diagnosed with the presence of histologic residual tumor in specimens obtained by gastrectomy were assigned to the residual tumor (RT) group (n = 47); those diagnosed with the absence of histologic residual tumor were assigned to the nonresidual tumor (NRT) group (n = 33)...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28207537/lymph-node-dissection-for-siewert-ii-esophagogastric-junction-adenocarcinoma-a-retrospective-study-of-3-surgical-procedures
#20
Xiao-Feng Duan, Jie Yue, Peng Tang, Xiao-Bin Shang, Hong-Jing Jiang, Zhen-Tao Yu
The present study was aimed to investigate the application of right thansthoracic Ivor-Lewis (IL), left transthoracic (LTT), and left thoracoabdominal (LTA) approach in Siewert type II adenocarcinoma of esophagogastric junction (AEG).The data of 196 patients with Siewert type II AEG received surgical resection in our cancer center between January 2014 and April 2016 was retrospectively analyzed. Finally, 136 patients met the inclusion criteria were enrolled in the study and divided into the IL (47 cases), LTT (51 cases), and LTA group (38 cases)...
February 2017: Medicine (Baltimore)
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