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https://www.readbyqxmd.com/read/28214872/higher-numbers-of-t-bet-tumor-infiltrating-lymphocytes-associate-with-better-survival-in-human-epithelial-ovarian-cancer
#1
Yun Xu, Lujun Chen, Bin Xu, Yuqi Xiong, Min Yang, Xiaohui Rui, Liangrong Shi, Changping Wu, Jingting Jiang, Binfeng Lu
BACKGROUND/AIMS: T-bet, a member of the T-box family of transcription factors, is a key marker of type I immune response within the tumor microenvironment, and has been previously reported by us to serve as an important prognostic indicator for human gastric cancer patients and a potential biomarker for immunotherapy. In the present study, we aimed to assess the clinical significance and prognostic value of T-bet+ tumor-infiltrating lymphocytes in human epithelial ovarian cancer. METHODS: The immunohistochemistry was used to analyze the infiltration density of T-bet+ lymphoid cells in human epithelial ovarian cancer tissues, and the flow cytometry analysis was used to further analyze the presence of T-bet+ tumor-infiltrating lymphocytes subgroups in cancer tissues...
January 30, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214334/autophagy-impairment-by-helicobacter-pylori-induced-methylation-silencing-of-map1lc3av1-promotes-gastric-carcinogenesis
#2
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/28213880/detection-of-digestive-malignancies-and-post-gastrectomy-complications-via-gastrointestinal-fluid-examination
#3
REVIEW
Lei Huang, Aman Xu
To date, gastric carcinoma (GC) is one of the common and fatal digestive malignancies worldwide. The prognosis of GC is not always satisfactory because of late diagnosis. Scholars are keen on discovering novel accurate and economical biomarkers in body liquids for GC screening to detect and evaluate the lesion before the results of imaging techniques are obtained. While traditional serum assays have limited sensitivity and specificity, gastrointestinal juice may provide relevant specific biomarkers because of its close contact with the tumor...
February 17, 2017: Frontiers of Medicine
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/28211613/novel-anticarcinoembryonic-antigen-antibody-drug-conjugate-has-antitumor-activity-in-the-existence-of-soluble-antigen
#6
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
#7
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/28210088/clinicopathological-treatment-and-prognosis-study-of-43-gastric-neuroendocrine-carcinomas
#8
De-Jun Liu, Xue-Liang Fu, Wei Liu, Lu-Ying Zheng, Jun-Feng Zhang, Yan-Miao Huo, Jiao Li, Rong Hua, Qiang Liu, Yong-Wei Sun
AIM: To provide more information and therapeutic methods about gastric neuroendocrine carcinomas (G-NECs) which occur rarely but are highly malignant and clinically challenging. METHODS: We retrospectively analyzed the clinicopathological characteristics, treatments, and prognosis of 43 G-NEC patients at our hospital between January 2007 and December 2014. The diagnosis was based on the 2010 World Health Organization criteria. RESULTS: Forty-three G-NECs containing 39 small cell carcinomas and 4 large cell NECs with Ki67 > 60% were included in this study, accounting for only 0...
January 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28210017/influence-of-prognostic-factors-for-recurrence-of-adenocarcinoma-of-the-stomach
#9
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/28209556/palliation-of-malignant-gastroduodenal-obstruction-fluoroscopic-metallic-stent-placement-with-different-approaches
#10
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
#11
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
#12
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/28208004/a-novel-partially-covered-self-expandable-metallic-stent-with-proximal-flare-in-patients-with-malignant-gastric-outlet-obstruction
#13
Naminatsu Takahara, Hiroyuki Isayama, Yousuke Nakai, Shuntaro Yoshida, Tomotaka Saito, Suguru Mizuno, Hiroshi Yagioka, Hirofumi Kogure, Osamu Togawa, Saburo Matsubara, Yukiko Ito, Natsuyo Yamamoto, Minoru Tada, Kazuhiko Koike
Background/Aims: Endoscopic placement of self-expandable metal stents (SEMSs) has emerged as a palliative treatment for malignant gastric outlet obstruction (GOO). Although covered SEMSs can prevent tumor ingrowth, frequent migration of covered SEMSs may offset their advantages in preventing tumor ingrowth. Methods: We conducted this multicenter, single-arm, retrospective study at six tertiary referral centers to evaluate the safety and efficacy of a partially covered SEMS with an uncovered large-bore flare at the proximal end as an antimigration system in 41 patients with symptomatic malignant GOO...
February 17, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28207963/nardilysin-promotes-hepatocellular-carcinoma-through-activation-of-signal-transducer-and-activator-of-transcription-3
#14
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
#15
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
#16
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)
https://www.readbyqxmd.com/read/28207501/pd-l1-pd-1-check-point-in-gastric-carcinoma-with-lymphoid-stroma-case-report-with-immunochemical-study
#17
Anna Crescenzi, Chiara Taffon, Michele Donati, Michele Pier Luca Guarino, Sergio Valeri, Roberto Coppola
INTRODUCTION: Gastric carcinoma with lymphoid stroma is an unusual type of gastric tumor associated with a better prognosis than typical gastric carcinomas. The hallmark of this cancer is a prominent lymphoid infiltration of the stroma that represents an intense host lymphocytic response. The programmed death 1-programmed death-ligand 1 (PD-1/PD-L1) axis has recently emerged as a master immune checkpoint that controls antitumor immune responses against many neoplasms. PATIENT'S CONCERNS CASE STUDY AND OUTCOME: We report the case of a male patient with gastric carcinoma with lymphoid stroma with a large mass infiltrating the gastric wall without nodal metastasis...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28206978/pathogenic-roles-of-alterations-in-vitamin-d-and-vitamin-d-receptor-in-gastric-tumorigenesis
#18
REVIEW
Chao Du, Shiming Yang, Xiaoyan Zhao, Hui Dong
Gastric cancer is currently the second leading cause of cancer-related death worldwide, especially in Japan, Korea and China, and the 5-year survival rate of gastric cancer is less than 30%. Thus, it is important to shed more lights on novel agents to prevent gastric cancer or to improve survival rate of the patients. Vitamin D not only maintains calcium and bone homeostasis, but also mostly inhibits tumor genesis, invasion, and metastasis through activation of vitamin D receptor. Although epidemiological results are not consistent, accumulating evidence from gastric cancer cells, animal models, and clinical trials suggest that vitamin D deficiency may increase the risk and mortality of gastric cancer, but vitamin D supplement might be a safe and economical way to prevent or treat gastric cancer...
February 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28206972/circular-rnas-signature-predicts-the-early-recurrence-of-stage-iii-gastric-cancer-after-radical-surgery
#19
Yan Zhang, Jin Li, Jiang Yu, Hao Liu, Zhiyong Shen, Gentai Ye, Tingyu Mou, Xiaolong Qi, Guoxin Li
Tumor recurrence is usually detected within one year after radical resection of stage III gastric cancer. This study aimed to establish the expression profile and determine potential circular RNAs (circRNAs) and predict the early recurrence of stage III gastric cancer. We identified 46 differently expressed circRNAs between cancer and adjacent normal tissues through circRNA microarray. We further screened eight indicators related to early recurrence. We subsequently divided the remaining cases into two cohorts...
February 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28206968/intratumoral-lactate-metabolism-in-barrett-s-esophagus-and-adenocarcinoma
#20
Heikki Huhta, Olli Helminen, Sami Palomäki, Joonas H Kauppila, Juha Saarnio, Petri P Lehenkari, Tuomo J Karttunen
BACKGROUND: Monocarboxylate transporters (MCTs) are cell membrane proteins which transport pyruvate, lactate and ketone bodies across the plasma membrane. MCTs are activated in various cancers, but their expression in esophageal adenocarcinoma is not known. The present study was conducted to elucidate the expression of MCTs in esophageal adenocarcinoma and its precursor lesions. RESULTS: Cytoplasmic MCT1, MCT4 and MTCO1 expression linearly increased from normal epithelium to Barrett's mucosa to dysplasia and cancer...
February 11, 2017: Oncotarget
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