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pancreatic tumour

B Bonito, D R P Sauter, A Schwab, M B A Djamgoz, I Novak
In the recent decades, ion channels became the focus of cancer biologists, as many channels are overexpressed in tumour tissue and functionally they are linked to abnormal cell behaviour with processes including apoptosis, chemo- and radioresistance, proliferation and migration. KCa3.1 is a Ca(2+)-activated K(+) channel that plays a central role in tumour progression in many cancer types. Therefore, the aim of the present study was to investigate KCa3.1 expression in pancreatic cancer cells and assess possible implications to disease progression...
October 17, 2016: Pflügers Archiv: European Journal of Physiology
W G P Kanchana, R A A Shaminda, K B Galketiya, V Pinto, D Walisinghe, S Wijetunge, R Heendeniya
Background. Solid Pseudopapillary Tumours of the pancreas are a rare entity and more commonly seen in women than in men. These tumours have typically reached large sizes when clinically detected. Case Description. A 21-year-old male was found to have a left hypochondrial mass on physical examination following a trivial soft tissue injury. Contrast-enhanced computed topography (CT) of the abdomen showed a 10.3 × 7.6 × 10.3 cm size arising from the body and the tail of the pancreas. He underwent laparoscopic resection of distal pancreatic tumour en bloc with spleen...
2016: Case Reports in Gastrointestinal Medicine
Georg Dimcevski, Spiros Kotopoulis, Tormod Bjånes, Dag Hoem, Jan Schjøt, Bjørn Tore Gjertsen, Martin Biermann, Anders Molven, Halfdan Sorbye, Emmet McCormack, Michiel Postema, Odd Helge Gilja
BACKGROUND: The primary aim of our study was to evaluate the safety and potential toxicity of gemcitabine combined with microbubbles under sonication in inoperable pancreatic cancer patients. The secondary aim was to evaluate a novel image-guided microbubble-based therapy, based on commercially available technology, towards improving chemotherapeutic efficacy, preserving patient performance status, and prolonging survival. METHODS: Ten patients were enrolled and treated in this Phase I clinical trial...
October 12, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
E Bertani, N Fazio, D Radice, C Zardini, G Spinoglio, A Chiappa, D Ribero, R Biffi, S Partelli, M Falconi
BACKGROUND: The role of primary tumour surgery in pancreatic neuroendocrine tumours (PNETs) with unresectable liver metastases is controversial and international guidelines do not recommend surgery in such cases. Resectability of the primary tumour has never been considered in outcome comparisons between operated and non-operated patients. METHODS: From two institutional prospective databases of patients affected by PNET and unresectable liver metastases, 63 patients who underwent a left-pancreatectomy at diagnosis were identified and compared with a group of 30 patients with a potentially resectable but not-resected primary tumour located in the body or tail...
September 30, 2016: European Journal of Surgical Oncology
Faiyaz Notta, Michelle Chan-Seng-Yue, Mathieu Lemire, Yilong Li, Gavin W Wilson, Ashton A Connor, Robert E Denroche, Sheng-Ben Liang, Andrew M K Brown, Jaeseung C Kim, Tao Wang, Jared T Simpson, Timothy Beck, Ayelet Borgida, Nicholas Buchner, Dianne Chadwick, Sara Hafezi-Bakhtiari, John E Dick, Lawrence Heisler, Michael A Hollingsworth, Emin Ibrahimov, Gun Ho Jang, Jeremy Johns, Lars G T Jorgensen, Calvin Law, Olga Ludkovski, Ilinca Lungu, Karen Ng, Danielle Pasternack, Gloria M Petersen, Liran I Shlush, Lee Timms, Ming-Sound Tsao, Julie M Wilson, Christina K Yung, George Zogopoulos, John M S Bartlett, Ludmil B Alexandrov, Francisco X Real, Sean P Cleary, Michael H Roehrl, John D McPherson, Lincoln D Stein, Thomas J Hudson, Peter J Campbell, Steven Gallinger
Pancreatic cancer, a highly aggressive tumour type with uniformly poor prognosis, exemplifies the classically held view of stepwise cancer development. The current model of tumorigenesis, based on analyses of precursor lesions, termed pancreatic intraepithelial neoplasm (PanINs) lesions, makes two predictions: first, that pancreatic cancer develops through a particular sequence of genetic alterations (KRAS, followed by CDKN2A, then TP53 and SMAD4); and second, that the evolutionary trajectory of pancreatic cancer progression is gradual because each alteration is acquired independently...
October 12, 2016: Nature
María-Victoria Alvarez-Sánchez, Bertrand Napoléon
Most pancreatic cancers and extrahepatic cholangiocarcinomas are unresectable at the time of diagnosis, and even in case of a resectable cancer, for elderly or patients with coexistent comorbidities, surgery is not an option. Current treatment alternatives in these scenarios are very limited. Biliary stenting with self-expanding metal stents (SEMS) is the mainstay palliative treatment of biliary obstruction due to unresectable pancreatic cancer or cholangiocarcinoma. Nevertheless, more than 50% of SEMS become occluded after 6 mo due to tumour over- and ingrowth, leading to hospital readmissions and reinterventions that significantly impair quality of life...
October 7, 2016: World Journal of Gastroenterology: WJG
N Stojanovic, Z Hassan, M Wirth, P Wenzel, M Beyer, C Schäfer, P Brand, A Kroemer, R H Stauber, R M Schmid, A Arlt, A Sellmer, S Mahboobi, R Rad, M Reichert, D Saur, O H Krämer, G Schneider
Mutation of p53 is a frequent genetic lesion in pancreatic cancer being an unmet clinical challenge. Mutants of p53 have lost the tumour-suppressive functions of wild type p53. In addition, p53 mutants exert tumour-promoting functions, qualifying them as important therapeutic targets. Here, we show that the class I histone deacetylases HDAC1 and HDAC2 contribute to maintain the expression of p53 mutants in human and genetically defined murine pancreatic cancer cells. Our data reveal that the inhibition of these HDACs with small molecule HDAC inhibitors (HDACi), as well as the specific genetic elimination of HDAC1 and HDAC2, reduce the expression of mutant p53 mRNA and protein levels...
October 10, 2016: Oncogene
Francisco Sánchez-Bueno, Rocío García-Pérez, María Antonia Claver Valderas, Jesús de la Peña Moral, Laura Frutos Esteban, Eduardo Ortiz Ruiz, Matilde Fuster Quiñonero, Pascual Parrilla Paricio
INTRODUCTION: In pancreatic ductal adenocarcinoma (PDA), surgical resection is the only curative treatment, but due to its late clinical presentation only 15-25% patients are candidates for curative resection. The aim of this prospective, single-center study is to determine the diagnostic utility of preoperative PET-CT for early detection of PDA and early panIN lesions. METHODS: We studied the histopathological features of PDA and different panIN lesions in 139 surgical samples from patients undergoing pancreatic resection (from 2010-2014), comparing these results with preoperative PET-CT and MDCT study...
October 3, 2016: Cirugía Española
Malcolm Boyce, Katie A Lloyd, D Mark Pritchard
Gastrin controls gastric acid secretion and mucosal cell growth, especially of enterochromaffin-like cells, via gastrin/cholecystokinin-2 receptor (CCK2R) binding and downstream signalling. Studies in animal models, healthy subjects and patients with gastric neuroendocrine tumours provide compelling evidence to justify developing a CCK2R antagonist (CCK2RA) for preventing or treating the trophic effects of hypergastrinaemia or conditions expressing CCK2R, and with or without a proton pump inhibitor, for treating gastric acid-related conditions...
October 3, 2016: Current Opinion in Pharmacology
S Partelli, R Cirocchi, S Crippa, L Cardinali, V Fendrich, D K Bartsch, M Falconi
BACKGROUND: The incidence of asymptomatic, sporadic, small non-functioning pancreatic neuroendocrine neoplasms (NF-PNENs) has increased in recent decades. Conservative treatment has been advocated for these tumours. The aim of this study was systematically to evaluate the literature on active surveillance and to compare this with surgical management for asymptomatic sporadic small NF-PNENs. METHODS: PubMed, Embase and the Cochrane Library were searched systematically for studies that compared the active surveillance of asymptomatic, sporadic, small NF-PNENs with surgical management...
October 5, 2016: British Journal of Surgery
Cristovão M Sousa, Douglas E Biancur, Xiaoxu Wang, Christopher J Halbrook, Mara H Sherman, Li Zhang, Daniel Kremer, Rosa F Hwang, Agnes K Witkiewicz, Haoqiang Ying, John M Asara, Ronald M Evans, Lewis C Cantley, Costas A Lyssiotis, Alec C Kimmelman
No abstract text is available yet for this article.
October 5, 2016: Nature
Felix J Hüttner, Rosa Klotz, Alexis Ulrich, Markus W Büchler, Markus K Diener
BACKGROUND: Pancreatic cancer remains one of the five leading causes of cancer deaths in industrialized nations. For adenocarcinomas in the head of the gland and premalignant lesions, partial pancreaticoduodenectomy represents the standard treatment for resectable tumours. The gastro- or duodenojejunostomy after partial pancreaticoduodenectomy can be reestablished via either an antecolic or a retrocolic route. The debate about the more favourable technique for bowel reconstruction is ongoing...
September 30, 2016: Cochrane Database of Systematic Reviews
Javier Martinez-Useros, Jesus Garcia-Foncillas
Pancreatic ductal adenocarcinoma is one of the most lethal types of tumour, and its incidence is rising worldwide. Although survival can be improved when these tumours are detected at an early stage, this cancer is usually asymptomatic, and the disease only becomes apparent after metastasis. The only prognostic biomarker approved by the FDA to date is carbohydrate antigen 19-9 (CA19-9); however, the specificity of this biomarker has been called into question, and diagnosis is usually based on clinical parameters...
2016: BioMed Research International
Naima Tariq, Asim Qureshi, Asifa Dian
Solid pseudo-papillary tumour of pancreas is a rare neoplasm having a low malignant potential. It mostly affects young adolescent females. We report an unusual case of an 18 year old male with a mass in the mesocolon which was reported as solid pseudo-papillary tumour of pancreas. This case is unusual by virtue of extra pancreatic location and male gender of the patient.
October 2016: JPMA. the Journal of the Pakistan Medical Association
W Hartwig, A Gluth, U Hinz, D Koliogiannis, O Strobel, T Hackert, J Werner, M W Büchler
BACKGROUND: In the recent International Study Group of Pancreatic Surgery (ISGPS) consensus on extended pancreatectomy, several issues on perioperative outcome and long-term survival remained unclear. Robust data on outcomes are sparse. The present study aimed to assess the outcome of extended pancreatectomy for borderline resectable and locally advanced pancreatic cancer. METHODS: A consecutive series of patients with primary pancreatic adenocarcinoma undergoing extended pancreatectomies, as defined by the new ISGPS consensus, were compared with patients who had a standard pancreatectomy...
September 30, 2016: British Journal of Surgery
Sangeetha N Kalimuthu, Stefano Serra, Neesha Dhani, Sara Hafezi-Bakhtiari, Eva Szentgyorgyi, Rajkumar Vajpeyi, Runjan Chetty
AIM: Several regression grading systems have been proposed for neoadjuvant chemoradiation-treated pancreatic ductal adenocarcinoma (PDAC). This study aimed to examine the utility, reproducibility and level of concordance of three most frequently used grading systems. METHODS: Four gastrointestinal pathologists used the College of American Pathologists (CAP), Evans, MD Anderson Cancer Centre (MDA) regression grading systems to grade 14 selected cases (7-20 slides from each case) of neoadjuvant chemoradiation-treated PDAC...
September 28, 2016: Journal of Clinical Pathology
Vojko Flis, Stojan Potrc, Nina Kobilica, Arpad Ivanecz
BACKGROUND: Recent reports have shown that patients with vascular tumour invasion who undergo concurrent vascular resection can achieve long-term survival rates equivalent to those without vascular involvement requiring pancreaticoduodenectomy alone. There is no consensus about which patients benefit from the portal-superior mesenteric vein resection and there is no consensus about the best surgical technique of vessel reconstruction (resection with or without graft reconstruction). As published series are small the aim of this study was to evaluate our experience in pancreatectomies with en bloc vascular resection and reconstruction of vessels...
September 1, 2016: Radiology and Oncology
Tao Wang, Faiyaz Notta, Roya Navab, Joella Joseph, Emin Ibrahimov, Jing Xu, Chang-Qi Zhu, Ayelet Borgida, Steven Gallinger, Ming-Sound Tsao
: Carcinoma associated fibroblasts (CAFs) represent a significant component of pancreatic cancer stroma and are biologically implicated in tumour progression. However, evidence of both cancer promoting and restraining properties amongst CAFs suggests the possibility of multiple phenotypic subtypes. Here, it is demonstrated that senescent CAFs promote pancreatic cancer invasion and metastasis compared to non-senescent control CAFs using in vitro transwell invasion models and in vivo xenograft mouse models...
September 27, 2016: Molecular Cancer Research: MCR
He Cheng, Guopei Luo, Yu Lu, Kaizhou Jin, Meng Guo, Jin Xu, Jiang Long, Liang Liu, Xianjun Yu, Chen Liu
BACKGROUND: The systemic inflammation response and immune impairment are closely related to the development and progression of various tumours, such as pancreatic cancer. In this study, we evaluated circulating inflammation factors and circulating regulatory T cells (Tregs) as markers of immunosuppression in a cohort of Chinese patients with resectable pancreatic cancer. METHODS: Samples were retrospectively collected from a series of 195 pathological stage I/II pancreatic cancer patients who underwent potentially curative surgery between June 2010 and April 2014...
September 16, 2016: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
Laurien G P H Vroomen, Hester J Scheffer, Marleen C A M Melenhorst, Marcus C de Jong, Janneke E van den Bergh, Cornelis van Kuijk, Foke van Delft, Geert Kazemier, Martijn R Meijerink
OBJECTIVES: To assess specific imaging characteristics after irreversible electroporation (IRE) for locally advanced pancreatic carcinoma (LAPC) with contrast-enhanced (ce)MRI and ceCT, and to explore the correlation of these characteristics with the development of recurrence. METHODS: Qualitative and quantitative analyses of imaging data were performed on 25 patients treated with percutaneous IRE for LAPC. Imaging characteristics of the ablation zone on ceCT and ceMRI were assessed over a 6-month follow-up period...
September 22, 2016: European Radiology
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