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https://www.readbyqxmd.com/read/28823110/erratum-to-ki-67-heterogeneity-in-well-differentiated-gastro-entero-pancreatic-neuroendocrine-tumors-when-is-biopsy-reliable-for-grade-assessment
#1
Federica Grillo, Luca Valle, Diego Ferone, Manuela Albertelli, Maria Pia Brisigotti, Giuseppe Cittadini, Alessandro Vanoli, Roberto Fiocca, Luca Mastracci
No abstract text is available yet for this article.
August 19, 2017: Endocrine
https://www.readbyqxmd.com/read/28821198/cd200-expression-in-neuroendocrine-neoplasms
#2
Jason E Love, Kimberly Thompson, Mark R Kilgore, Maria Westerhoff, Claire E Murphy, Antonios Papanicolau-Sengos, Kinsey A McCormick, Veena Shankaran, Natalie Vandeven, Faith Miller, Astrid Blom, Paul T Nghiem, Steven J Kussick
Objectives: CD200 expression has been well studied in hematopoietic malignancies; however, CD200 expression has not been well-characterized in neuroendocrine neoplasms. We examined CD200 expression in 391 neuroendocrine neoplasms from various anatomic sites. Methods: Tissue blocks containing pulmonary small cell carcinoma, pulmonary carcinoid, large cell neuroendocrine carcinoma, pancreatic neuroendocrine tumor, gastrointestinal carcinoid, and Merkel cell carcinoma were evaluated for CD200 expression by immunohistochemistry...
September 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28820176/5-hydroxymethylcytosine-signatures-in-cell-free-dna-provide-information-about-tumor-types-and-stages
#3
Chun-Xiao Song, Senlin Yin, Li Ma, Amanda Wheeler, Yu Chen, Yan Zhang, Bin Liu, Junjie Xiong, Weihan Zhang, Jiankun Hu, Zongguang Zhou, Biao Dong, Zhiqi Tian, Stefanie S Jeffrey, Mei-Sze Chua, Samuel So, Weimin Li, Yuquan Wei, Jiajie Diao, Dan Xie, Stephen R Quake
5-Hydroxymethylcytosine (5hmC) is an important mammalian DNA epigenetic modification that has been linked to gene regulation and cancer pathogenesis. Here we explored the diagnostic potential of 5hmC in circulating cell-free DNA (cfDNA) using a sensitive chemical labeling-based low-input shotgun sequencing approach. We sequenced cell-free 5hmC from 49 patients of seven different cancer types and found distinct features that could be used to predict cancer types and stages with high accuracy. Specifically, we discovered that lung cancer leads to a progressive global loss of 5hmC in cfDNA, whereas hepatocellular carcinoma and pancreatic cancer lead to disease-specific changes in the cell-free hydroxymethylome...
August 18, 2017: Cell Research
https://www.readbyqxmd.com/read/28819839/a-novel-microfluidic-device-for-isolation-of-circulating-tumor-cells-from-pancreatic-cancer-blood-samples
#4
Jose I Varillas, Kangfu Chen, Jinling Zhang, Thomas J George, Z Hugh Fan
Enumeration of circulating tumor cells (CTCs) can provide valuable prognostic information to guide cancer treatment as well as help monitor disease progression. Analysis of these rare malignant cells has the potential to further our understanding of cancer metastasis by gaining insights into CTC characteristics and properties. Microfluidics presents a unique platform to isolate and study CTCs. In this chapter, we describe the detailed procedures for the fabrication and use of a microfluidic device to detect CTCs from the blood of pancreatic cancer patients...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28819395/downregulation-of-abc-transporters-in-non-neoplastic-tissues-confers-better-prognosis-for-pancreatic-and-colorectal-cancer-patients
#5
Pavel Dvorak, Viktor Hlavac, Beatrice Mohelnikova-Duchonova, Vaclav Liska, Martin Pesta, Pavel Soucek
Transport of a wide variety of substrates, including xenobiotics, is one of the main functions attributed to human ATP-binding cassette (ABC) proteins. Overexpression of ABC genes is considered to be an important mechanism facilitating the development of chemoresistance. Relationships between the expression levels of ABC genes in tumor tissues and established clinicopathological features were extensively studied previously. The current study tested our hypothesis that the expression levels of ABC genes in non-neoplastic (control) tissues also provide important information in relation to the relevant tumor progression...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28818321/influence-of-computed-tomography-contrast-agent-on-radiotherapy-dose-calculation-for-pancreatic-carcinoma-a-dosimetric-study-based-on-tomotherapy-and-volumetric-modulated-arc-therapy-techniques
#6
Feng Zhu, Weizhang Wu, Fuhai Zhu, Yong Wang, Yingjie Wang, Tingyi Xia
The main purpose of our investigation was to quantify the dosimetric influence of intravenous contrast agent for pancreatic cancer radiotherapy treatment. This study focused on complex modulated irradiation techniques of tomotherapy (TOMO) and volumetric-modulated arc therapy (VMAT) to investigate if novel conformal treatment methods could reduce the influence of contrast agent. In our study, patients with pancreatic cancer were enrolled to have 2 computed tomography (CT) scans in the same position without and with intravenous contrast agent for treatment planning...
August 14, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28818111/estimates-of-cancer-incidence-and-mortality-in-china-2013
#7
Rongshou Zheng, Hongmei Zeng, Siwei Zhang, Wanqing Chen
INTRODUCTION: Population-based cancer registration data are collected by the National Central Cancer Registry in China every year. Cancer incident cases and cancer deaths in 2013 were analyzed. METHODS: Through the procedure of quality control, reported data from 255 registries were accepted to establish the national database for cancer estimates. Incidences and mortalities were calculated with stratification by area (urban/rural), sex (male/female), age group (0, 1-4, 5-9, 10-14 … 80-84, and 85-year-old and above), and cancer site...
August 17, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28817826/the-safety-and-efficacy-of-the-s1-temozolomide-regimen-in-patients-with-metastatic-neuroendocrine-tumors
#8
Jiuda Zhao, Hong Zhao, Yihebali Chi
<br><br>Purpose Both capecitabine alone and capecitabine in combination with temozolomide have activities against neuroendocrine tumors (NETs). However, the role of S-1 in NETs is still unknown. We performed a study to evaluate the safety and efficacy of the S-1 plus temozolomide (STEM) regimen in patients with locally advanced or metastatic NETs. Methods A retrospective review was conducted in 20 patients with locally advanced or metastatic NETs treated with the STEM regimen. Of the patients, 15 (75...
August 17, 2017: Neuroendocrinology
https://www.readbyqxmd.com/read/28816978/prognostic-value-of-18f-fdg-pet-ct-parameters-in-patients-with-pancreatic-carcinoma-a-systematic-review-and-meta-analysis
#9
Dongyong Zhu, Lisha Wang, Hanfei Zhang, Jie Chen, Yanfang Wang, Sama Byanju, Meiyan Liao
BACKGROUND: The identification of pancreatic carcinoma (PC) patients with poor prognosis is a priority in clinical oncology because of their high 5-year mortality. However, the prognostic value of pretreatment F-fluorodeoxyglucose (F-FDG)- positron emission tomography (PET)/computed tomography (CT) parameters in PC patients is controversial and no consensus exists as to its predictive capability. This meta-analysis was performed to comprehensively explore the prognostic significance of F-FDG-PET/CT parameters in patients with pancreatic carcinoma...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816351/recent-advances-in-genomic-profiling-of-adenosquamous-carcinoma-of-the-pancreas
#10
Rebecca Marcus, Anirban Maitra, Jason Roszik
Adenosquamous carcinoma of the pancreas (ASCP) is a mixed tumor type which contains squamous cell carcinoma and also ductal adenocarcinoma components. Due to the rarity of this malignancy, only very limited genomic profiling has been performed. A recent paper by Fang et al. published in The Journal of Pathology contributed to our knowledge of genomic alterations by performing whole genome and exome sequencing of 17 ASCP tumors. They found major genomic similarities to pancreatic ductal adenocarcinoma; however, the p53 pathway was altered in a greater proportion of cases, while a high frequency of 3p loss was a distinct copy number alteration pattern observed in ASCP...
August 17, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28816013/new-neurotensin-analogue-radiolabeled-by-99m-technetium-as-a-potential-agent-for-tumor-identification
#11
Iman Emrarian, Nourollah Sadeghzadeh, Seyed Mohammad Abedi, Saeid Abediankenari
INTRODUCTION: It has been shown that more than 75% of ductal pancreatic adenocarcinomas are overexpress neurotensin (NT) receptors. Overexpression of NT receptors has been reported in various human tumor types. Hence, a non-invasive diagnosis and staging method could be very beneficial. In this work, we describe radiolabeling and evaluation of new neurotensin analogues to target neurotensin receptor-positive tumors such as pancreatic carcinoma. METHODS: Radiolabeling was performed at 95°C for 10 min using(99m) Tc in the presence of tricine/EDDA exchange labeling...
August 16, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28815810/proteome-characterization-of-human-pancreatic-cyst-fluid-from-intraductal-papillary-mucinous-neoplasm-by-lc-ms-ms
#12
Joonho Park, Dohyun Han, Misol Do, Jongmin Woo, Joseph I Wang, Youngmin Han, Wooil Kwon, Sun-Whe Kim, Jin-Young Jang, Youngsoo Kim
RATIONALE: In recent years, the molecular components of pancreatic cyst fluid has been used for diagnosis and prognosis. Because the protein markers that are currently used in clinical tests are unreliable, proteomic studies to find new protein markers are being conducted. However, such researches have been limited due to the complexity of pancreatic cyst fluid and the immaturity of proteomic techniques. METHODS: To overcome these limitations and provide a pancreatic cyst proteome dataset, we examined cyst fluid proteome with tandem mass spectrometry...
August 15, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28814832/combinatorial-and-sequential-delivery-of-gemcitabine-and-oseltamivir-phosphate-from-implantable-poly-d-l-lactic-co-glycolic-acid-cylinders-disables-human-pancreatic-cancer-cell-survival
#13
Stephanie Allison Logan, Amanda J Brissenden, Myron R Szewczuk, Ronald J Neufeld
Combination therapies against multiple targets are currently being developed to prevent resistance to a single chemotherapeutic agent and to extirpate pre-existing resistance in heterogeneous cancer cells in tumors due to selective pressure from the single agent. Gemcitabine (GEM), a chemotherapeutic agent, is the current standard of care for patients with pancreatic cancer. Patients with pancreatic cancer receiving GEM have a low progression-free survival. Given the poor response rate to GEM, cancer cells are known to develop rapid resistance to this drug...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28814809/non-thermal-plasma-treated-solution-demonstrates-antitumor-activity-against-pancreatic-cancer-cells-in-vitro-and-in-vivo
#14
Kim Rouven Liedtke, Sander Bekeschus, André Kaeding, Christine Hackbarth, Jens-Peter Kuehn, Claus-Dieter Heidecke, Wolfram von Bernstorff, Thomas von Woedtke, Lars Ivo Partecke
Pancreatic cancer is associated with a high mortality rate. In advanced stage, patients often experience peritoneal carcinomatosis. Using a syngeneic murine pancreatic cancer cell tumor model, the effect of non-thermal plasma (NTP) on peritoneal metastatic lesions was studied. NTP generates reactive species of several kinds which have been proven to be of relevance in cancer. In vitro, exposure to both plasma and plasma-treated solution significantly decreased cell viability and proliferation of 6606PDA cancer cells, whereas mouse fibroblasts were less affected...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28813705/the-lncrna-tug1-ezh2-axis-promotes-pancreatic-cancer-cell-proliferation-migration-and-emt-phenotype-formation-through-sponging-mir-382
#15
Liang Zhao, Hongwei Sun, Hongru Kong, Zongjing Chen, Bicheng Chen, Mengtao Zhou
BACKGROUND/AIMS: Pancreatic carcinoma (PC) is the one of the most common and malignant cancers worldwide. LncRNA taurine upregulated gene 1 (TUG1) was initially identified as a transcript upregulated by taurine, and the abnormal expression of TUG1 has been reported in many cancers. However, the biological role and molecular mechanism of TUG1 in PC still needs further investigation. METHODS: Quantitative real-time PCR (qRT-PCR) was performed to measure the expression of TUG1 in PC cell lines and tissues...
August 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28813661/tissue-resident-macrophages-in-pancreatic-ductal-adenocarcinoma-originate-from-embryonic-hematopoiesis-and-promote-tumor-progression
#16
Yu Zhu, John M Herndon, Dorothy K Sojka, Ki-Wook Kim, Brett L Knolhoff, Chong Zuo, Darren R Cullinan, Jingqin Luo, Audrey R Bearden, Kory J Lavine, Wayne M Yokoyama, William G Hawkins, Ryan C Fields, Gwendalyn J Randolph, David G DeNardo
Tumor-associated macrophages (TAMs) are essential components of the cancer microenvironment and play critical roles in the regulation of tumor progression. Optimal therapeutic intervention requires in-depth understanding of the sources that sustain macrophages in malignant tissues. In this study, we investigated the ontogeny of TAMs in murine pancreatic ductal adenocarcinoma (PDAC) models. We identified both inflammatory monocytes and tissue-resident macrophages as sources of TAMs. Unexpectedly, significant portions of pancreas-resident macrophages originated from embryonic development and expanded through in situ proliferation during tumor progression...
August 15, 2017: Immunity
https://www.readbyqxmd.com/read/28813653/the-yolk-sac-feeds-pancreatic-tumors
#17
Jeffrey W Pollard
In this issue of Immunity, Zhu et al. (2017) report that tumor-associated macrophages in a mouse model of pancreatic ductal adenocarcinoma (PDAC) originate from both the yolk sac (YS) and bone marrow. Differential ablation of these populations indicates that only the YS-derived macrophages promote PDAC progression and growth.
August 15, 2017: Immunity
https://www.readbyqxmd.com/read/28811976/long-lived-pancreatic-ductal-adenocarcinoma-slice-cultures-enable-precise-study-of-the-immune-microenvironment
#18
Xiuyun Jiang, Y David Seo, Jae Hyuck Chang, Andrew Coveler, Eslam N Nigjeh, Sheng Pan, Florencia Jalikis, Raymond S Yeung, Ian N Crispe, Venu G Pillarisetty
Pancreatic ductal adenocarcinoma (PDA) remains a deadly disease that is rarely cured, despite many recent successes with immunotherapy for other malignancies. As the human disease is heavily infiltrated by effector T cells, we postulated that accurately modeling the PDA immune microenvironment would allow us to study mechanisms of immunosuppression that could be overcome for therapeutic benefit. Using viable precision-cut slices from fresh PDA, we developed an organotypic culture system for this purpose. We confirmed that cultured slices maintain their baseline morphology, surface area, and microenvironment after at least 6 d in culture, and demonstrated slice survival by MTT assay and by immunohistochemistry staining with Ki-67 and cleaved-Caspase-3 antibodies...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28811962/an-ror1-bi-specific-t-cell-engager-provides-effective-targeting-and-cytotoxicity-against-a-range-of-solid-tumors
#19
Satyen Harish Gohil, Solange Rosa Paredes-Moscosso, Micaela Harrasser, Marzia Vezzalini, Aldo Scarpa, Emma Morris, Andrew M Davidoff, Claudio Sorio, Amit Chunilal Nathwani, Marco Della Peruta
We have developed a humanized bi-specific T-cell engager (BiTE) targeting receptor tyrosine kinase-like orphan receptor 1 (ROR1), a cell surface antigen present on a range of malignancies and cancer-initiating cells. Focusing initially on pancreatic cancer, we demonstrated that our ROR1 BiTE results in T cell mediated and antigen-specific cytotoxicity against ROR1-expressing pancreatic cancer cell lines in vitro at exceedingly low concentrations (0.1 ng/mL) and low effector to target ratios. Our BiTE prevented engraftment of pancreatic tumor xenografts in murine models and reduced the size of established subcutaneous tumors by at least 3-fold...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28811081/prognostic-value-of-who-grade-in-pancreatic-neuro-endocrine-tumors-in-multiple-endocrine-neoplasia-type-1-results-from-the-dutchmen1-study-group
#20
Elfi B Conemans, Lodewijk A A Brosens, Gabriela M Raicu-Ionita, Carolina R C Pieterman, Wouter W de Herder, Olaf M Dekkers, Ad R Hermus, Anouk N van der Horst-Schrivers, Peter H Bisschop, Bas Havekes, Madeleine L Drent, H Th Marc Timmers, G Johan Offerhaus, Gerlof D Valk, Menno R Vriens
BACKGROUND: The prognostic value of WHO grade in pancreatic neuroendocrine tumors (PanNETs) in patients with Multiple Endocrine Neoplasia Type 1 (MEN1) is unknown. METHODS: We performed a cohort study using the Dutch National MEN1 database, which includes >90% of the Dutch MEN1 population with data collected between 1990 and 2014. Formalin-fixed paraffin embedded tissue blocks from the largest resected PanNET per patient were collected. MIB1 staining was performed and KI67 labeling index (LI) was determined by manual eye-counting under a microscope and by digital image analysis...
July 31, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
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