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Pancreas adenocarcinoma

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https://www.readbyqxmd.com/read/28087712/pdx1-dynamically-regulates-pancreatic-ductal-adenocarcinoma-initiation-and-maintenance
#1
Nilotpal Roy, Kenneth K Takeuchi, Jeanine M Ruggeri, Peter Bailey, David Chang, Joey Li, Laura Leonhardt, Sapna Puri, Megan T Hoffman, Shan Gao, Christopher J Halbrook, Yan Song, Mats Ljungman, Shivani Malik, Christopher V E Wright, David W Dawson, Andrew V Biankin, Matthias Hebrok, Howard C Crawford
Aberrant activation of embryonic signaling pathways is frequent in pancreatic ductal adenocarcinoma (PDA), making developmental regulators therapeutically attractive. Here we demonstrate diverse functions for pancreatic and duodenal homeobox 1 (PDX1), a transcription factor indispensable for pancreas development, in the progression from normal exocrine cells to metastatic PDA. We identify a critical role for PDX1 in maintaining acinar cell identity, thus resisting the formation of pancreatic intraepithelial neoplasia (PanIN)-derived PDA...
December 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/28079594/impact-of-concurrent-medication-use-on-pancreatic-cancer-survival-seer-medicare-analysis
#2
Muhammad S Beg, Arjun Gupta, David Sher, Sadia Ali, Saad Khan, Ang Gao, Tyler Stewart, Chul Ahn, Jarett Berry, Eric M Mortensen
OBJECTIVES: Preclinical studies have suggested that non-antineoplastic medication use may impact pancreatic cancer biology. We examined the association of several medication classes on pancreatic cancer survival in a large medical claims database. MATERIALS AND METHODS: Histologically confirmed pancreatic adenocarcinoma diagnosed between 2006 and 2009 were analyzed from the Surveillance, Epidemiology, and End Results-Medicare database with available part D data...
January 10, 2017: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28077438/fibroblast-drug-scavenging-increases-intratumoural-gemcitabine-accumulation-in-murine-pancreas-cancer
#3
E Hessmann, M S Patzak, L Klein, N Chen, V Kari, I Ramu, T E Bapiro, K K Frese, A Gopinathan, F M Richards, D I Jodrell, C Verbeke, X Li, R Heuchel, J M Löhr, S A Johnsen, T M Gress, V Ellenrieder, A Neesse
OBJECTIVE: Desmoplasia and hypovascularity are thought to impede drug delivery in pancreatic ductal adenocarcinoma (PDAC). However, stromal depletion approaches have failed to show clinical responses in patients. Here, we aimed to revisit the role of the tumour microenvironment as a physical barrier for gemcitabine delivery. DESIGN: Gemcitabine metabolites were analysed in LSL-Kras(G12D/+); LSL-Trp53(R172H/+); Pdx-1-Cre (KPC) murine tumours and matched liver metastases, primary tumour cell lines, cancer-associated fibroblasts (CAFs) and pancreatic stellate cells (PSCs) by liquid chromatography-mass spectrometry/mass spectrometry...
January 10, 2017: Gut
https://www.readbyqxmd.com/read/28057438/oncogenic-kras-induced-increase-in-fluid-phase-endocytosis-is-dependent-on-n-wasp-and-is-required-for-the-formation-of-pancreatic-preneoplastic-lesions
#4
Clara Lubeseder-Martellato, Katharina Alexandrow, Ana Hidalgo-Sastre, Irina Heid, Sophie Luise Boos, Thomas Briel, Roland M Schmid, Jens T Siveke
Fluid-phase endocytosis is a homeostatic process with an unknown role in tumor initiation. The driver mutation in pancreatic ductal adenocarcinoma (PDAC) is constitutively active KRas(G12D), which induces neoplastic transformation of acinar cells through acinar-to-ductal metaplasia (ADM). We have previously shown that KRas(G12D)-induced ADM is dependent on RAC1 and EGF receptor (EGFR) by a not fully clarified mechanism. Using three-dimensional mouse and human acinar tissue cultures and genetically engineered mouse models, we provide evidence that (i) KRas(G12D) leads to EGFR-dependent sustained fluid-phase endocytosis (FPE) during acinar metaplasia; (ii) variations in plasma membrane tension increase FPE and lead to ADM in vitro independently of EGFR; and (iii) that RAC1 regulates ADM formation partially through actin-dependent regulation of FPE...
December 24, 2016: EBioMedicine
https://www.readbyqxmd.com/read/28056248/-evaluation-of-american-joint-commission-on-cancer-8-th-edition-and-japanese-pancreas-society-7-th-edition-changes-for-t-and-n-staging-in-patients-with-pancreatic-adenocarcinoma
#5
Y M Yang
Accurate staging for cancer is the basis for clinical practice, individualized treatment strategy, and prognosis determination.Recently, the T and N staging systems for pancreatic adenocarcinoma were updated by both American Joint Commission on Cancer(AJCC)8(th) edition and Japanese Pancreas Society 7(th) edition, in which more objective parameters were applied.When a large number of patients within the test set were staged, AJCC 8(th) edition has showed more reproducible and helped to predict the patient prognosis more accurately...
January 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28048183/th-ef-bra-04-individually-optimized-contrast-enhanced-4d-ct-for-radiotherapy-simulation-in-pancreatic-ductal-adenocarcinoma
#6
W Choi, M Xue, B Lane, M Kang, K Patel, W Regine, P Klahr, J Wang, S Chen, W D'souza, W Lu
PURPOSE: To develop an individually optimized contrast-enhanced (CE) 4D-CT for radiotherapy simulation in pancreatic ductal adenocarcinomas (PDA). METHODS: Ten PDA patients were enrolled. Each underwent 3 CT scans: a 4D-CT immediately following a CE 3D-CT and an individually optimized CE 4D-CT using test injection. Three physicians contoured the tumor and pancreatic tissues. We compared image quality scores, tumor volume, motion, tumor-to-pancreas contrast, and contrast-to-noise ratio (CNR) in the 3 CTs...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28044263/five-fraction-stereotactic-body-radiation-therapy-sbrt-and-chemotherapy-for-the-local-management-of-metastatic-pancreatic-cancer
#7
Jonathan W Lischalk, Aidan Burke, Jessica Chew, Christen Elledge, Marie Gurka, John Marshall, Michael Pishvaian, Sean Collins, Keith Unger
BACKGROUND: The majority of patients with pancreatic cancer are diagnosed with metastatic disease at presentation. Nevertheless, local progression is responsible for up to 30% of deaths and can lead to significant morbidity. As a consequence, further exploration of effective methods of local control and palliation is essential. Stereotactic body radiation therapy (SBRT) is a widely utilized technique for the treatment of localized pancreatic cancer. Here, we report our experience with SBRT and chemotherapy for the local treatment of the metastatic patient population...
January 3, 2017: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/28039657/self-reported-questionnaire-detects-family-history-of-cancer-in-a-pancreatic-cancer-screening-program
#8
Aimee L Lucas, Adam Tarlecki, Kellie Van Beck, Casey Lipton, Arindam RoyChoudhury, Elana Levinson, Sheila Kumar, Wendy K Chung, Harold Frucht, Jeanine M Genkinger
Pancreatic ductal adenocarcinoma (PDAC) is a leading cause of cancer death; approximately 5-10% of PDAC is hereditary. Self-administered health history questionnaires (HHQs) may provide a low-cost method to detail family history (FH) of malignancy. Pancreas Center patients were asked to enroll in a registry; 149 with PDAC completed a HHQ which included FH data. Patients with FH of PDAC, or concern for inherited PDAC syndrome, were separately evaluated in a Prevention Program and additionally met with a genetic counselor (GC) to assess PDAC risk (n = 61)...
December 30, 2016: Journal of Genetic Counseling
https://www.readbyqxmd.com/read/28033740/intestinal-malrotation-and-replaced-common-hepatic-artery-during-duodenopancreatectomy-a-case-report
#9
Alexander Schank, Philippe Colonval, Mikhaël Salame
BACKGROUND: Intestinal malrotation is a well-known anomaly in the normal rotation process of the midgut during embryogenesis. Multiple forms are described, resulting in various positional configurations of the small bowel and colon. Replaced common hepatic artery is a rare but not anecdotic variant of the standard hepatic vascularization, associated with surgical implications. Our aim is to explain the impact of their simultaneous presence during this procedure and the difficulty in identifying them preoperatively, despite imaging...
December 29, 2016: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28032597/elevation-of-%C3%AE-galactoside-%C3%AE-2-6-sialyltransferase-1-in-a-fructoseresponsive-manner-promotes-pancreatic-cancer-metastasis
#10
Chi-Che Hsieh, Yi-Ming Shyr, Wen-Ying Liao, Tien-Hua Chen, Shin-E Wang, Peir-Chuen Lu, Pei-Yu Lin, Yan-Bo Chen, Wan-Yu Mao, Hsin-Ying Han, Michael Hsiao, Wen-Bin Yang, Wen-Shan Li, Yuh-Pyng Sher, Chia-Ning Shen
Pancreatic ductal adenocarcinoma (PDAC) is an aggressive type of pancreatic cancer with clinical characteristics of local invasion and early metastasis. Recent cohort studies indicate high fructose intake is associated with an increase in pancreatic cancer risk. However, the mechanisms by which fructose promotes pancreatic tumorigenesis remain unclear. Herein, Kras+/LSLG12D mice were crossed with Elas-CreER transgenic mice to determine whether fructose intake directly contributes to tumor formation. Orthotopic tumor-xenograft experiments were performed to determine whether fructose substitution enhances the metastatic potential of PDAC cells...
December 9, 2016: Oncotarget
https://www.readbyqxmd.com/read/28029328/when-what-and-why-of-perioperative-treatment-of-potentially-curable-pancreatic-adenocarcinoma
#11
Kimberly Perez, Thomas E Clancy, Joseph D Mancias, Michael H Rosenthal, Brian M Wolpin
The Oncology Grand Rounds series is designed to place original reports published in the Journal into clinical context. A case presentation is followed by a description of diagnostic and management challenges, a review of the relevant literature, and a summary of the authors' suggested management approaches. The goal of this series is to help readers better understand how to apply the results of key studies, including those published in Journal of Clinical Oncology, to patients seen in their own clinical practice...
December 28, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28028341/solid-pseudopapillary-tumor-of-pancreas-a-lesser-known-entity-diagnosis-and-pitfalls-a-case-report
#12
Anshu Singh, Gyanendra Mohan, Sunanda Chaturvedi, Lalatendu Sarangi
Solid pseudopapillary tumor (SPT) is a rare pancreatic neoplasm with a reported incidence of 0.1% to 2.7% of all pancreatic tumors. Because radiological presentation of pancreatic tumors is quite overlapping, distinctive features in fine needle aspiration cytology (FNAC) helps in its diagnosis preoperatively. Being a low-grade malignancy presenting predominantly in young females, correct preoperative diagnosis minimizes the need of extensive surgery. SPT carries good prognosis without any adjuvant chemotherapy/radiotherapy in most cases, even in the presence of metastatic disease...
October 2016: Journal of Cytology
https://www.readbyqxmd.com/read/28027898/lower-plasma-levels-of-glucose-dependent-insulinotropic-peptide-gip-and-pancreatic-polypeptide-pp-in-patients-with-ductal-adenocarcinoma-of-the-pancreas-and-their-relation-to-the-presence-of-impaired-glucoregulation-and-weight-loss
#13
Jan Škrha, Petr Bušek, Jana Uhrová, Petr Hrabal, Klára Kmochová, Martin Laclav, Bohuš Bunganič, Přemysl Frič
BACKGROUND: The changes in gastrointestinal hormones associated with pancreatic ductal adenocarcinoma (PDAC) in patients with impaired glucoregulation have yet to be evaluated. The aim of this study was to determine plasma concentrations of selected gastrointestinal hormones in PDAC patients with and without diabetes and to compare them with levels found in Type 2 diabetic patients without cancer. METHODS: In this study we examined plasma concentrations of glucose-dependent insulinotropic peptide (GIP), glucagon-like peptide 1 (GLP-1), pancreatic polypeptide (PP), peptide YY (PYY) and neuropeptide Y (NPY), and cytokines leptin and adiponectin in 94 patients with histologically confirmed PDAC...
December 15, 2016: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28017812/distal-cholangiocarcinoma-and-pancreas-adenocarcinoma-are-they-really-the-same-disease-a-13-institution-study-from-the-us-extrahepatic-biliary-malignancy-consortium-and-the-central-pancreas-consortium
#14
Cecilia G Ethun, Alexandra G Lopez-Aguiar, Timothy Pawlik, George Poultsides, Kamran Idrees, Ryan Fields, Sharon Weber, Clifford Cho, Robert Martin, Charles Scoggins, Perry Shen, Carl Schmidt, Ioannis Hatzaras, David Bentrem, Syed Ahmad, Daniel Abbott, Hong Jin Kim, Nipun Merchant, Charles A Staley, David A Kooby, Shishir K Maithel
BACKGROUND: Distal cholangiocarcinoma (DC) and pancreatic ductal adenocarcinoma (PDAC) are often managed as one entity, yet direct comparisons are lacking. Our aim was to utilize two, large, multi-institutional databases to assess treatment, pathologic, and survival differences between these diseases. STUDY DESIGN: Patients with DC and PDAC who underwent curative-intent pancreaticoduodenectomy from 2000-2015 at 13 institutions comprising the US Extrahepatic Biliary Malignancy and Central Pancreas Consortiums were included...
December 22, 2016: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28011495/granulocyte-colony-stimulating-factor-producing-anaplastic-carcinoma-of-the-pancreas-case-report-and-review-of-the-literature
#15
Sarah Vinzens, Joel Zindel, Martin Zweifel, Tilman Rau, Beat Gloor, Annette Wochner
We report on the case of a 67-year-old man with granulocyte colony-stimulating factor (G-CSF) producing anaplastic carcinoma of the pancreas. Preoperative routine tests revealed an elevated white blood cell (WBC) count of 25.2 G/l, consisting almost exclusively of neutrophilic granulocytes (23.31 G/l) with a predominance of segmented neutrophils (78% of all neutrophilic granulocytes), and elevated levels of C-reactive protein at 87 mg/l. Upon surgery, local tumour infiltration was more extensive than expected from preoperative imaging...
January 2017: Anticancer Research
https://www.readbyqxmd.com/read/28002540/gallbladder-carcinoma-a-rare-cause-of-pyloric-duodenal-stenosis
#16
Zizi Niculescu, Victoria Ulmeanu, Mihaela Maria Ghinea, Liliana Mocanu, Costin Niculescu, Mircea Grigorian
Pyloric duodenal stenosis is usually caused by pyloric, juxtapyloric or duodenal ulcer, or by postbulbar ulcer. Gallbladder cancer (GBC), duodenal diverticula, annular pancreas and superior mesenteric artery syndrome (Wilkie's syndrome) are rare causes of pyloric duodenal stenosis. The case of a 66-year-old female patient is presented. The patient was admitted to hospital presenting anorexia, repeated alimentary vomiting, epigastric pain, and weight loss. Objective clinical examination upon admission: clapotage à jeun is present, triggered by tapping the epigastric region...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28000629/effectiveness-of-contrast-enhanced-endoscopic-ultrasound-for-detecting-mural-nodules-in-intraductal-papillary-mucinous-neoplasm-of-the-pancreas-and-for-making-therapeutic-decisions
#17
Mitsuru Fujita, Takao Itoi, Nobuhito Ikeuchi, Atsushi Sofuni, Takayoshi Tsuchiya, Kentaro Ishii, Kentaro Kamada, Junko Umeda, Reina Tanaka, Ryosuke Tonozuka, Mitsuyoshi Honjo, Shuntaro Mukai, Fuminori Moriyasu
BACKGROUND AND OBJECTIVES: There have been few studies to date evaluating the effectiveness of contrast-enhanced endoscopic ultrasound (CE-EUS) for detecting mural nodules in patients with branch duct-type intraductal papillary mucinous neoplasm (BD-IPMN) of the pancreas. We aim to evaluate the effectiveness of CE-EUS for detecting mural nodules in BD-IPMN. PATIENTS AND METHODS: Of the 427 BD-IPMN patients, 21 patients (4.9%) in whom the presence of mural nodules was suggested by CE computed tomography (CT) or magnetic resonance imaging (MRI), or in whom the presence of nodule-like lesions as shown by fundamental EUS, were examined by CE-EUS...
November 2016: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28000628/role-of-contrast-harmonic-endoscopic-ultrasonography-in-other-pancreatic-solid-lesions-neuroendocrine-tumors-autoimmune-pancreatitis-and-metastases
#18
REVIEW
Maxime Palazzo
Contrast harmonic endoscopic ultrasonography (CH-EUS) is a new technique which allows the dynamic study of the microvascularization of a target tissue. Its application is validated for the diagnosis of pancreatic adenocarcinoma but remains unclear for other solid pancreatic tumors (neuroendocrine tumors [NETs], autoimmune pancreatitis [AIP], metastases). The purpose of this review is to outline the potential role of the CH-EUS in these indications. NETs are typically iso/hyperenhanced at CH-EUS, and a heterogeneous enhancement seems a good predictor of malignancy in neuroendocrine pancreatic tumor...
November 2016: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/27994339/carcinoma-of-the-ampulla-of-vater-associated-with-annular-pancreas
#19
Mallika Tewari, Ashish Verma, H S Shukla
Carcinoma of the ampulla of Vater associated with annular pancreas is a rare entity. Only seven cases have been reported so far in the English literature. We herein report one such case in a 42-year-lady who presented with progressively increasing jaundice and pain in the upper abdomen for past 2 months. A magnetic resonance cholangiopancreaticography (MRCP) and MRI revealed an annular pancreas with an ampullary mass and a dilated CBD. An upper gastrointestinal endoscopic biopsy from the ampullary mass revealed a moderately differentiated adenocarcinoma...
October 2016: Indian Journal of Surgery
https://www.readbyqxmd.com/read/27991926/chronic-inflammation-initiates-multiple-forms-of-k-ras-independent-mouse-pancreatic-cancer-in-the-absence-of-tp53
#20
A K Swidnicka-Siergiejko, S B Gomez-Chou, Z Cruz-Monserrate, D Deng, Y Liu, H Huang, B Ji, N Azizian, J Daniluk, W Lu, H Wang, A Maitra, C D Logsdon
Chronic inflammation (CI) is a risk factor for pancreatic cancer (PC) including the most common type, ductal adenocarcinoma (PDAC), but its role and the mechanisms involved are unclear. To investigate the role of CI in PC, we generated genetic mouse models with pancreatic specific CI in the presence or absence of TP53. Mice were engineered to express either cyclooxygenase-2 (COX-2) or IκB kinase-2 (IKK2), and TP53(+/+) or TP53(f/f) specifically in adult pancreatic acinar cells by using a full-length pancreatic elastase promoter-driven Cre...
December 19, 2016: Oncogene
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