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Pancreatic adenocarcinoma

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https://www.readbyqxmd.com/read/29139084/common-hepatic-artery-abutment-or-encasement-is-an-adverse-prognostic-factor-in-patients-with-borderline-and-unresectable-pancreatic-cancer
#1
Geoffrey M Kozak, Jeffrey D Epstein, Sandeep P Deshmukh, Benjamin B Scott, Scott W Keith, Harish Lavu, Charles J Yeo, Jordan M Winter
BACKGROUND: Localized and unresectable pancreatic ductal adenocarcinoma (PDA) comprises one third of new diagnoses and includes borderline resectable (BR) and locally advanced (LA) unresectable disease. In a cohort of patients who were treated and followed at a single institution, we assessed clinical and radiographic predictors of outcome. METHODS: The study included 69 consecutive patients with BR or LA PDA. Serial imaging studies were reviewed by both a pancreatic surgeon and a radiologist for vascular abutment or encasement by cancer, and they were recorded...
November 14, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/29138890/role-of-rapid-kv-switching-dual-energy-ct-in-assessment-of-post-surgical-local-recurrence-of-pancreatic-adenocarcinoma
#2
Anushri Parakh, Manuel Patino, Daniela Muenzel, Avinash Kambadakone, Dushyant V Sahani
PURPOSE: The purpose of this study is to evaluate the performance of material-specific iodine (MS-I) images generated by rapid kV-switching single-source dual-energy computed tomography (rsDECT) for distinguishing post-operative changes from local tumor recurrence in patients on follow-up for pancreatic adenocarcinoma after surgical resection. METHODS: In this IRB-approved HIPPA-compliant study, retrospective review of 51 patients who underwent surgical resection of pancreatic adenocarcinoma was conducted and were followed up using contrast-enhanced rsDECT (Discovery CT 750HD, GE Healthcare, Milwaukee, WI)...
November 14, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/29137857/matricellular-proteins-and-survival-in-patients-with-pancreatic-cancer-a-systematic-review
#3
REVIEW
Sirio Fiorino, Maria Letizia Bacchi-Reggiani, Chiara Birtolo, Giorgia Acquaviva, Michela Visani, Adele Fornelli, Michele Masetti, Andrea Tura, Stefano Sbrignadello, Fabio Grizzi, Federica Patrinicola, Matteo Zanello, Laura Mastrangelo, Raffaele Lombardi, Claudia Benini, Luca Di Tommaso, Arrigo Bondi, Francesco Monetti, Elena Siopis, Paolo Emilio Orlandi, Michele Imbriani, Carlo Fabbri, Silvia Giovanelli, Andrea Domanico, Esterita Accogli, Salomone Di Saverio, Daniela Grifoni, Vincenzo Cennamo, Paolo Leandri, Elio Jovine, Dario de Biase
Extracellular matrix (ECM) plays a fundamental role in tissue architecture and homeostasis and modulates cell functions through a complex interaction between cell surface receptors, hormones, several bioeffector molecules, and structural proteins like collagen. These components are secreted into ECM and all together contribute to regulate several cellular activities including differentiation, apoptosis, proliferation, and migration. The so-called "matricellular" proteins (MPs) have recently emerged as important regulators of ECM functions...
November 4, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/29137355/a-pilot-study-evaluating-concordance-between-blood-based-and-patient-matched-tumor-molecular-testing-within-pancreatic-cancer-patients-participating-in-the-know-your-tumor-kyt-initiative
#4
Michael J Pishvaian, R Joseph Bender, Lynn M Matrisian, Lola Rahib, Andrew Hendifar, William A Hoos, Sam Mikhail, Vincent Chung, Vincent Picozzi, Craig Heartwell, Kimberly Mason, Katelyn Varieur, Metasebia Aberra, Subha Madhavan, Emanuel Petricoin, Jonathan R Brody
Recent improvements in next-generation sequencing (NGS) technology have enabled detection of biomarkers in cell-free DNA in blood and may ultimately replace invasive tissue biopsies. However, a better understanding of the performance of blood-based NGS assays is needed prior to routine clinical use. As part of an IRB-approved molecular profiling registry trial of pancreatic ductal adenocarcinoma (PDA) patients, we facilitated blood-based NGS testing of 34 patients from multiple community-based and high-volume academic oncology practices...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137350/il2rg-identified-as-overexpressed-by-rna-seq-profiling-of-pancreatic-intraepithelial-neoplasia-mediates-pancreatic-cancer-growth
#5
Michael Ayars, Eileen O'Sullivan, Anne Macgregor-Das, Koji Shindo, Haeryoung Kim, Michael Borges, Jun Yu, Ralph H Hruban, Michael Goggins
Pancreatic ductal adenocarcinoma evolves from precursor lesions, the most common of which is pancreatic intraepithelial neoplasia (PanIN). We performed RNA-sequencing analysis of laser capture microdissected PanINs and normal pancreatic duct cells to identify differentially expressed genes between PanINs and normal pancreatic duct, and between low-grade and high-grade PanINs. One of the most highly overexpressed transcripts identified in PanIN is interleukin-2 receptor subunit gamma (IL2RG) encoding the common gamma chain, IL2Rγ...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137251/exportin-1-xpo1-inhibition-leads-to-restoration-of-tumor-suppressor-mir-145-and-consequent-suppression-of-pancreatic-cancer-cell-proliferation-and-migration
#6
Asfar S Azmi, Yiwei Li, Irfana Muqbil, Amro Aboukameel, William Senapedis, Erkan Baloglu, Yosef Landesman, Sharon Shacham, Michael G Kauffman, Philip A Philip, Ramzi M Mohammad
Pancreatic ductal adenocarcinoma (PDAC) is the third leading cause of cancer related deaths in the United States with a majority of these patients dying from aggressively invasive and metastatic disease. There is growing evidence that suggests an important role for microRNAs (miRNAs) in the pathobiology of aggressive PDAC. In this study, we found that the expression of miR-145 was significantly lower in PDAC cells when compared to normal pancreatic duct epithelial cells. Here we show that inhibition of the nuclear exporter protein exportin 1 (XPO1; also known as chromosome maintenance region 1 [CRM1]) by siRNA knockdown or by the Selective Inhibitor of Nuclear Export (SINE) compound (KPT-330; selinexor) increases miR-145 expression in PDAC cells resulting in the decreased cell proliferation and migration capacities...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137001/reply-to-the-letter-to-the-editor-laparoscopic-distal-pancreatectomy-for-pancreatic-ductal-adenocarcinoma-time-for-a-randomized-controlled-trial-results-of-an-all-inclusive-national-observational-study
#7
https://www.readbyqxmd.com/read/29137000/laparoscopic-distal-pancreatectomy-for-pancreatic-ductal-adenocarcinoma-time-for-a-randomized-controlled-trial-results-of-an-all-inclusive-national-observational-study
#8
Thijs de Rooij, Jony van Hilst, Olivier R Busch, Marcel G Dijkgraaf, David A Kooby, Mohammed Abu Hilal, Marc G Besselink
No abstract text is available yet for this article.
December 2017: Annals of Surgery
https://www.readbyqxmd.com/read/29136736/-expression-of-b-cell-transposition-gene-3-in-pancreatic-ductal-adenocarcinoma-and-its-prognostic-value
#9
J Chen, Z C Zhou, W B Liu, J Wang, X J Chen, Y Y Shen, Z X Zhong
Objective: To detect the expression of B cell transposition gene 3(BTG3) in pancreatic ductal adenocarcinoma(PDAC), and explore its relationship with postoperative recurrence and metastasis of tumor. Methods: Six self-paired frozen PDAC specimens and 3 normal pancreatic tissues from the Second Hospital of Jiaxing Affiliated to Jiaxing University were collected and the expression of BTG3 was detected by qPCR. Ten normal pancreatic tissues and 52 cases of PDAC tumor and paracarcinomatous tissues from the Second Hospital of Jiaxing Affiliated to Jiaxing University were collected from June 2009 to December 2016...
November 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29136287/quantification-of-mri-visibility-and-artefacts-at-3t-of-liquid-fiducial-marker-in-a-pancreas-tissue-mimicking-phantom
#10
Sergej Schneider, Rasmus Irming Jølck, Esther Gera Cornelia Troost, Aswin Louis Hoffmann
PURPOSE: X-ray based position verification of the target volume in image-guided radiation therapy (IGRT) of patients with pancreatic ductal adenocarcinoma (PDAC) is currently performed on solid fiducial markers that are implanted under endoscopic ultrasonography. A new biodegradable liquid fiducial marker has recently been introduced. To assess its potential use for magnetic resonance imaging (MRI) guided photon or proton radiotherapy of PDAC, the MRI visibility and artefacts of this marker were quantified and compared against solid gold markers...
November 14, 2017: Medical Physics
https://www.readbyqxmd.com/read/29135139/-laparoscopic-transperitoneal-adrenalectomy
#11
B G Guliev, B K Komyakov, D V Semenov
AIM: To analyze the results of laparoscopic adrenalectomy (LAE) in patients with adrenal gland tumors. MATERIALS AND METHODS: From 2011 to 2016, 24 patients (15 men, 9 women), mean age 49.6 +/- 8.2 years, underwent LAE. The right, left and bilateral LAE was performed in 12, 10 and 2 patients, respectively. Indications for surgery were mainly primary and metastatic adrenal tumors. The operations were performed using a transperitoneal 4-port approach. RESULTS: Twenty six LAE were successfully performed in 24 patients...
October 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/29134652/an-overview-of-polyamine-metabolism-in-pancreatic-ductal-adenocarcinoma
#12
REVIEW
Otto Phanstiel
Pancreatic ductal adenocarcinoma (PDAC) is one of the deadliest major cancers, with a five year survival rate of less than 8%. With current therapies only giving rise to modest life extension, new approaches are desperately needed. Even though targeting polyamine metabolism is a proven anticancer strategy, there are no reports which thoroughly survey the literature describing the role of polyamine biosynthesis and transport in PDAC. This review seeks to fill this void by describing what is currently known about polyamine metabolism in PDAC and identifies new targets and opportunities to treat this disease...
November 14, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29133621/the-mutational-landscape-of-gastrointestinal-malignancies-as-reflected-by-circulating-tumor-dna
#13
Paul Riviere, Paul T Fanta, Sadakatsu Ikeda, Joel Baumgartner, Gregory M Heestand, Razelle Kurzrock
We aimed to assess the utility of a novel, non-invasive method of detecting genomic alterations in patients with gastrointestinal malignancies i.e., the use of liquid biopsies to obtain blood-derived circulating tumor DNA (ctDNA) through an analysis of the genomic landscape of ctDNA (68 genes) from 213 patients with advanced gastrointestinal cancers. The most common cancer types were colorectal adenocarcinoma (N=55 (26%)), appendiceal adenocarcinoma (N=46 (22%)), hepatocellular carcinoma (N=31 (15%)), and pancreatic ductal adenocarcinoma (N=25 (12%))...
November 13, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29133460/elevated-hur-in-pancreas-promotes-a-pancreatitis-like-inflammatory-microenvironment-that-facilitates-tumor-development
#14
Weidan Peng, Narumi Furuuchi, Ludmila Aslanukova, Yu-Hung Huang, Samantha Z Brown, Wei Jiang, Sankar Addya, Vikalp Vishwakarma, Erika Peters, Jonathan R Brody, Dan A Dixon, Janet A Sawicki
Human antigen R (ELAVL1, HuR) is perhaps the best-characterized RNA-binding protein. Through its overexpression in various tumor types, HuR promotes post-transcriptional regulation of target genes in multiple core signaling pathways associated with tumor progression. The role of HuR overexpression in pancreatic tumorigenesis is unknown and led us to explore the consequences of HuR overexpression using a novel transgenic mouse model that has a >2-fold elevation of pancreatic HuR expression. Histologically, HuR overexpressing pancreas displays a fibro-inflammatory response and other pathological features characteristic of chronic pancreatitis...
November 13, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29132146/identification-of-unique-neoantigen-qualities-in-long-term-survivors-of-pancreatic-cancer
#15
Vinod P Balachandran, Marta Łuksza, Julia N Zhao, Vladimir Makarov, John Alec Moral, Romain Remark, Brian Herbst, Gokce Askan, Umesh Bhanot, Yasin Senbabaoglu, Daniel K Wells, Charles Ian Ormsby Cary, Olivera Grbovic-Huezo, Marc Attiyeh, Benjamin Medina, Jennifer Zhang, Jennifer Loo, Joseph Saglimbeni, Mohsen Abu-Akeel, Roberta Zappasodi, Nadeem Riaz, Martin Smoragiewicz, Z Larkin Kelley, Olca Basturk, Mithat Gönen, Arnold J Levine, Peter J Allen, Douglas T Fearon, Miriam Merad, Sacha Gnjatic, Christine A Iacobuzio-Donahue, Jedd D Wolchok, Ronald P DeMatteo, Timothy A Chan, Benjamin D Greenbaum, Taha Merghoub, Steven D Leach
Pancreatic ductal adenocarcinoma is a lethal cancer with fewer than 7% of patients surviving past 5 years. T-cell immunity has been linked to the exceptional outcome of the few long-term survivors, yet the relevant antigens remain unknown. Here we use genetic, immunohistochemical and transcriptional immunoprofiling, computational biophysics, and functional assays to identify T-cell antigens in long-term survivors of pancreatic cancer. Using whole-exome sequencing and in silico neoantigen prediction, we found that tumours with both the highest neoantigen number and the most abundant CD8(+) T-cell infiltrates, but neither alone, stratified patients with the longest survival...
November 8, 2017: Nature
https://www.readbyqxmd.com/read/29130611/usefulness-of-exosome-encapsulated-microrna-451a-as-a-minimally-invasive-biomarker-for-prediction-of-recurrence-and-prognosis-in-pancreatic-ductal-adenocarcinoma
#16
Kunihiko Takahasi, Hisae Iinuma, Keita Wada, Shunryo Minezaki, Sachiyo Kawamura, Masahiko Kainuma, Yutaka Ikede, Makoto Shibuya, Fumihiko Miura, Keiji Sano
BACKGROUND: MicroRNAs (miRNAs) encapsulated in the exosomes of plasma is of interest as stable and minimally invasive biomarkers for recurrence and prognosis in cancer patients. The aim of this study was to clarify the predictive and prognostic value of plasma exosomal microRNA-451a (miR-451a) in patients with pancreatic ductal adenocarcinoma (PDAC). METHODS: Microarray-based expression profiling of miRNAs derived from exosomes in the plasma of 6 PDAC patients with UICC stage II was employed to identify a biomarker to distinguish between patients with and without recurrence...
November 11, 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/29130109/deubiquitinase-usp9x-promotes-cell-migration-invasion-and-inhibits-apoptosis-of-human-pancreatic-cancer
#17
Li Liu, Dan Yao, Pengbo Zhang, Weichao Ding, Xiuzhong Zhang, Chong Zhang, Shuai Gong, Yi Zhang, Jike Wang, Ting Sun, Zeqiang Ren
Ubiquitin specific peptidase 9, X-linked (USP9X), a significant regulatory protease in protein ubiquitination, has been proven to act as a proto-oncogene in several types of cancers, such as cervix, colon, breast, brain and lung cancers. The prognosis of patients with pancreatic ductal adenocarcinoma (PDAC) is extremely poor due to its high invasive and metastatic abilities. Nevertheless, whether USP9X acts as a proto-oncogene or a tumor-suppressor gene in PDAC is controversial and the mechanism of metastasis remains unknown...
December 2017: Oncology Reports
https://www.readbyqxmd.com/read/29129444/biomarkers-for-subtypes-of-pancreatic-ductal-adenocarcinoma
#18
Priya Venkatesan
No abstract text is available yet for this article.
November 9, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/29128993/pancreatic-adenocarcinoma-cross-sectional-imaging-techniques
#19
Naveen M Kulkarni, David M Hough, Parag P Tolat, Erik V Soloff, Avinash R Kambadakone
Pancreatic adenocarcinoma is a common malignancy that has a poor prognosis. Imaging is vital in its detection, staging, and management. Although a variety of imaging techniques are available, MDCT is the preferred imaging modality for staging and assessing the resectability of pancreatic adenocarcinoma. MR also has an important adjunct role, and may be used in addition to CT or as a problem-solving tool. A dedicated pancreatic protocol should be acquired as a biphasic technique optimized for the detection of pancreatic adenocarcinoma and to allow accurate local and distant disease staging...
November 11, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/29125367/recent-advances-in-the-management-of-pancreatic-adenocarcinoma
#20
Yusuf Karakas, Sahin Lacin, Suayib Yalcin
Pancreatic cancer (PC) demonstrates very poor prognosis and its incidence continues to increase, despite developments in chemotherapy, radiotherapy, and targeted therapies. Surgical resection is currently the only curative approach for PC. The role of radiotherapy in adjuvant and locally advanced PC continues to be increasingly controversial. This review article aims to explore the current knowledge of pancreatic adenocarcinoma, focusing on diagnosis, treatment strategies, and the best supportive care. Areas covered: The current literature on pancreatic adenocarcinoma treatment modalities has been summarized, with a focus on clinical trials and reviews...
November 13, 2017: Expert Review of Anticancer Therapy
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