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https://www.readbyqxmd.com/read/28793277/o-2-18-f-fluoroethyl-l-tyrosine-18-f-fet-uptake-in-insulinoma-first-results-from-a-xenograft-mouse-model-and-from-human
#1
Alessio Imperiale, Frédéric Boisson, Guillaume Kreutter, Bernard Goichot, Izzie Jacques Namer, Philippe Bachellier, Patrice Laquerriere, Laurence Kessler, Patrice Marchand, David Brasse
INTRODUCTION: Herein we have evaluated the uptake of O-(2-(18)F-fluoroethyl)-l-tyrosine ((18)F-FET) in insulinoma in comparison with those of 6-(18)F-fluoro-3,4-dihydroxy-l-phenylalanine ((18)F-FDOPA) providing first data from both murine xenograft model and one patient with proved endogenous hyperinsulinemic hypoglycemia. METHODS: Dynamic (18)F-FET and carbidopa-assisted (18)F-FDOPA PET were performed on tumor-bearing nude mice after subcutaneous injection of RIN-m5F murine beta cells and on a 30-year-old man with type-1 multiple endocrine neoplasia and hyperinsulinemic hypoglycemia defined by a positive fasting test...
July 12, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/28767565/small-intestine-follicular-dendritic-cell-sarcoma-with-liver-metastasis-a-case-report
#2
Yun-Chen Chang, Ivy Yenwen Chau, Yi-Chen Yeh, Gar-Yang Chau
RATIONALE: Follicular dendritic cell sarcoma (FDCS) is a rare neoplasia composed of spindle or oval cells with follicular dendritic cell differentiation, usually occurring in lymphoid tissue. In this report, we present a case of FDCS of the small intestine with liver metastasis. PATIENT CONCERNS: A 19-year-old female presented with recent onset of left upper abdominal pain. Abdominal computed tomography scan showed a large tumor mass in the liver lateral segment with compression to the pancreas upper part, and a smaller mass in the terminal ileum, respectively...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28752115/acinar-to-ductal-metaplasia-induced-by-transforming-growth-factor-beta-facilitates-kras-g12d-driven-pancreatic-tumorigenesis
#3
Nicolas Chuvin, David F Vincent, Roxane M Pommier, Lindsay B Alcaraz, Johann Gout, Cassandre Caligaris, Karam Yacoub, Victoire Cardot, Elodie Roger, Bastien Kaniewski, Sylvie Martel, Celia Cintas, Sophie Goddard-Léon, Amélie Colombe, Julie Valantin, Nicolas Gadot, Emilie Servoz, Jennifer Morton, Isabelle Goddard, Anne Couvelard, Vinciane Rebours, Julie Guillermet, Owen J Sansom, Isabelle Treilleux, Ulrich Valcourt, Stéphanie Sentis, Pierre Dubus, Laurent Bartholin
BACKGROUND & AIMS: Transforming growth factor beta (TGFβ) acts either as a tumor suppressor or as an oncogene, depending on the cellular context and time of activation. TGFβ activates the canonical SMAD pathway through its interaction with the serine/threonine kinase type I and II heterotetrameric receptors. Previous studies investigating TGFβ-mediated signaling in the pancreas relied either on loss-of-function approaches or on ligand overexpression, and its effects on acinar cells have so far remained elusive...
September 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28736585/late-onset-asymptomatic-pancreatic-neuroendocrine-tumor-a-case-report-on-the-phenotypic-expansion-for-men1
#4
Charu Kaiwar, Sarah K Macklin, Jennifer M Gass, Jessica Jackson, Eric W Klee, Stephanie L Hines, John A Stauffer, Paldeep S Atwal
BACKGROUND: Multiple endocrine neoplasia type 1 (MEN1) is a hereditary cancer syndrome associated with several endocrine as well as non-endocrine tumors and is caused by mutations in the MEN1 gene. Primary hyperparathyroidism affects the majority of MEN1 individuals by age 50 years. Additionally, MEN1 mutations trigger familial isolated hyperparathyroidism. We describe a seemingly unaffected 76-year-old female who presented to our Genetics Clinic with a family history of primary hyperparathyroidism and the identification of a pathogenic MEN1 variant...
2017: Hereditary Cancer in Clinical Practice
https://www.readbyqxmd.com/read/28736522/gliotoxin-targets-nuclear-notch2-in-human-solid-tumor-derived-cell-lines-in-vitro-and-inhibits-melanoma-growth-in-xenograft-mouse-model
#5
Rainer Hubmann, Wolfgang Sieghart, Susanne Schnabl, Mohammad Araghi, Martin Hilgarth, Marlies Reiter, Dita Demirtas, Peter Valent, Christoph Zielinski, Ulrich Jäger, Medhat Shehata
Deregulation of NOTCH2 signaling is implicated in a wide variety of human neoplasias. The current concept of targeting NOTCH is based on using gamma secretase inhibitors (GSI) to regulate the release of the active NOTCH intracellular domain. However, the clinical outcome of GSI remains unsatisfactory. Therefore we analyzed human solid tumor derived cell lines for their nuclear NOTCH activity and evaluated the therapeutic potential of the NOTCH2 transactivation inhibitor gliotoxin in comparison to the representative GSI DAPT...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28733926/perioperative-management-of-endocrine-insufficiency-after-total-pancreatectomy-for-neoplasia
#6
REVIEW
Ajay V Maker, Raashid Sheikh, Vinita Bhagia
PURPOSE: Indications for total pancreatectomy (TP) have increased, including for diffuse main duct intrapapillary mucinous neoplasms of the pancreas and malignancy; therefore, the need persists for surgeons to develop appropriate endocrine post-operative management strategies. The brittle diabetes after TP differs from type 1/2 diabetes in that patients have absolute deficiency of insulin and functional glucagon. This makes glucose management challenging, complicates recovery, and predisposes to hospital readmissions...
July 21, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28679961/islet-inflammation-and-ductal-proliferation-may-be-linked-to-increased-pancreatitis-risk-in-type-2-diabetes
#7
Belinda Schludi, Abu Saleh Md Moin, Chiara Montemurro, Tatyana Gurlo, Aleksey V Matveyenko, David Kirakossian, David W Dawson, Sarah M Dry, Peter C Butler, Alexandra E Butler
Pancreatitis is more frequent in type 2 diabetes mellitus (T2DM), although the underlying cause is unknown. We tested the hypothesis that ongoing β cell stress and apoptosis in T2DM induces ductal tree proliferation, particularly the pancreatic duct gland (PDG) compartment, and thus potentially obstructs exocrine outflow, a well-established cause of pancreatitis. PDG replication was increased 2-fold in human pancreas from individuals with T2DM, and was associated with increased pancreatic intraepithelial neoplasia (PanIN), lesions associated with pancreatic inflammation and with the potential to obstruct pancreatic outflow...
July 6, 2017: JCI Insight
https://www.readbyqxmd.com/read/28665730/cutaneous-leiomyosarcoma-with-multiple-visceral-metastases-in-a-domestic-pigeon
#8
Tomasz Stenzel, Michał Gesek, Katarzyna Paździor-Czapula, Iwona Otrocka-Domagała, Andrzej Koncicki
A clinical examination of a 4-yr-old fantail pigeon revealed a large skin tumor in the area of the left wing. The tumor had solid consistency and a single cavity filled with fluid. During necropsy, multiple tumors of varied size and diameter were found in the liver, spleen, pancreas, and kidneys. A histopathological examination of the skin tumor revealed extensive multifocal neoplasia with a tendency to infiltrate, composed of polygonal, round, oval, and elongated cells forming a solid system with cellular bands and obliteration of intercellular boundaries...
June 2017: Avian Diseases
https://www.readbyqxmd.com/read/28663159/synchronous-solid-pseudopapillary-tumor-and-insulinoma-in-an-adolescent-men1-patient-presenting-with-diagnostic-dilemmas
#9
Ahmet Uçar, Banu Özgüven, Muharrem Battal, Felda Alpaslan, Evrim Özmen, Aylin Yetim, Yasin Yılmaz
Multiple endocrine neoplasia (MEN1) is a rare autosomal dominant disorder characterized by primary hyperparathyroidism, enteropancreatic neuroendocrine tumors, and anterior pituitary adenomas. A 16-year-old male presented to the emergency outpatient clinic with tonic convulsions. Physical examination in the postconvulsive period was unremarkable and revealed a muscular, postpubertal adolescent. Biochemical tests at admission were consistent with hyperinsulinemic hypoglycemia and remarkable for elevated levels of liver transaminases and creatine kinase...
June 30, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28650600/clear-cell-neuroendocrine-tumor-of-the-pancreas-in-von-hippel-lindau-disease-a-case-report-and-literature-review
#10
(no author information available yet)
Clear cell neuroendocrine tumor (NET) of the pancreas is found in von Hippel-Lindau (VHL) disease, multiple endocrine neoplasia type I (MEN I), and sporadic form. Clear cell NETs are often misdiagnosed as metastatic renal cell carcinoma. A 47-year-old woman with VHL was found to have a mass in the pancreatic tail and two masses in the right kidney with two cysts. A distal pancreatectomy and right radical nephrectomy were performed. The pancreatic lesion was a well-circumscribed, golden-yellow solid mass, which was lobulated by septal fibrosis...
May 26, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28639725/targeting-nad-p-h-quinone-oxidoreductase-nqo1-in-pancreatic-cancer
#11
Anne M Lewis, Matthew Ough, Juan Du, Ming-Sound Tsao, Larry W Oberley, Joseph J Cullen
Quinone oxidoreductase (NQO1) functions as an important part of cellular antioxidant defense by detoxifying quinones, thus preventing the formation of reactive oxygen species. The aims of our study were to determine if NQO1 is elevated in pancreatic cancer specimens and pancreatic cancer cell lines and if so, would compounds previously demonstrated to redox cycle with NQO1 be effective in killing pancreatic cancer cells. Immunohistochemistry of resected pancreatic specimens demonstrated an increased immunoreactivity for NQO1 in pancreatic cancer and pancreatic intraepithelial neoplasia (PanIN) specimens versus normal human pancreas...
July 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28639695/glycogen-synthase-kinase-3%C3%AE-ablation-limits-pancreatitis-induced-acinar-to-ductal-metaplasia
#12
Li Ding, Geou-Yarh Liou, Daniel M Schmitt, Peter Storz, Jin-San Zhang, Daniel D Billadeau
Acinar-to-ductal metaplasia (ADM) is a reversible epithelial transdifferentiation process that occurs in the pancreas in response to acute inflammation. ADM can rapidly progress towards pre-malignant pancreatic intraepithelial neoplasia (PanIN) lesions in the presence of mutant KRas and ultimately pancreatic adenocarcinoma (PDAC). In the present work, we elucidate the role and related mechanism of glycogen synthase kinase-3beta (GSK-3β) in ADM development using in vitro 3D cultures and genetically engineered mouse models...
June 22, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28617892/intestinal-heterotopic-pancreas-involved-by-simultaneous-panin-2-lesion-and-endocrine-microadenoma-a-unique-case
#13
Remus Cornea, Sorina Taban, Cristian Suciu, Codruta Lazureanu, Alis Dema
We hereby present the case of a 58-year-old male who underwent a total gastrectomy for gastric neoplasm. During the surgery, a tumor mass in the jejunum was identified, considered as metastasis, and resected. The histopathological examination of the jejunal lesion showed ectopic pancreas. In this area, two pathological distinct lesions were identified, one histologically compatible with pancreatic intraepithelial neoplasia (PanIN) type 2 lesion and the other with morphologic criteria for endocrine microadenoma...
June 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/28589571/laparoscopic-total-pancreatectomy-for-multiple-endocrine-neoplasia-type-1-syndrome-associated-multifocal-non-functioning-pancreatic-neuroendocrine-tumor-a-case-report
#14
Palanisamy Senthinathan, Samrat Vijaykumar Jankar, Sandeep C Sabnis, Vivek Kaje, Sivakumar Srivatsan Gurumurthy, Natesan Anand Vijai, Vaiyapurigounder Palanisamy Nalankilli, Palanivelu Praveen Raj, Ramakrishanan Parthasarathi, Subbiah Rajapandian, Chinnusamy Palanivelu
Pancreatic neuroendocrine tumors are rare, accounting for less than 3% of all pancreatic tumors. Although laparoscopic pancreas-preserving surgery for managing sporadic pancreatic neuroendocrine tumors has been described in the literature, laparoscopic total pancreatectomy has rarely been reported. We present a 30-year-old man who was incidentally diagnosed with multiple endocrine neoplasia type 1 syndrome with parathyroid hyperplasia and a non-functioning pancreatic neuroendocrine tumor. He underwent laparoscopic total pancreatectomy with splenectomy...
June 6, 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28579586/a-case-of-pancreatic-intraepithelial-neoplasia-3-with-autoimmune-pancreatitis
#15
Yasuharu Kakizaki, Naohiko Makino, Yoshiaki Ando, Akiko Matsuda, Tetsuya Ishizawa, Yoshihiko Saito, Aya Suto, Mitsunori Yamakawa, Wataru Kimura, Yoshiyuki Ueno
We report a case of pancreatic intraepithelial neoplasia-3 (PanIN-3) with autoimmune pancreatitis (AIP). The patient, a 75-year-old man, had been diagnosed to have AIP with stenosis of the main pancreatic duct. After six years, computed tomography demonstrated dilatation of the main pancreatic duct in the mid-pancreas. Although we could not confirm the presence of any pancreatic tumor on the basis of imaging modalities alone, cytological examination of the pancreatic juice obtained by endoscopic retrograde pancreatography revealed atypical cells...
2017: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/28560292/metaplasia-in-the-stomach-arises-from-gastric-chief-cells
#16
Jason C Mills, James R Goldenring
The development of intestinal-type gastric cancer is preceded by loss of parietal cells (oxyntic atrophy) and the induction of metaplastic cell lineages in the gastric mucosa. For example, mouse models have shown that spasmolytic polypeptide-expressing metaplasia can develop following oxyntic atrophy through transdifferentiation of zymogen-secreting chief cells. Evolution of spasmolytic polypeptide-expressing metaplasia from chief cells occurs via a coordinated dismantling of their secretory apparatus and reprogramming of their transcriptome...
July 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28553179/peptide-receptor-radionuclide-therapy-with-177-lu-dotatate-for-metastatic-neuroendocrine-tumor-occurring-in-association-with-multiple-endocrine-neoplasia-type-1-and-cushing-s-syndrome
#17
Chinna Naik, Sandip Basu
Neuroendocrine tumor (NET) occurring in association with other endocrine syndromes forms a distinct entity. The aim was to assess the therapy response profile of the routine peptide receptor radionuclide therapy (PRRT) in this relatively uncommon but clinically challenging subgroup of patients. A retrospective analysis was undertaken from the case records from those who were treated with (177)Lu-DOTATATE for metastatic NET. In addition to assessing the therapeutic efficacy, emphasis was also given to study lesional sites and scan pattern...
April 2017: World Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28504695/epigenetic-pathway-inhibitors-represent-potential-drugs-for-treating-pancreatic-and-bronchial-neuroendocrine-tumors
#18
K E Lines, M Stevenson, P Filippakopoulos, S Müller, H E Lockstone, B Wright, S Grozinsky-Glasberg, A B Grossman, S Knapp, D Buck, C Bountra, R V Thakker
Cancer is associated with alterations in epigenetic mechanisms such as histone modifications and methylation of DNA, and inhibitors targeting epigenetic mechanisms represent a novel class of anti-cancer drugs. Neuroendocrine tumors (NETs) of the pancreas (PNETs) and bronchus (BNETs), which may have 5-year survivals of <50% and as low as 5%, respectively, represent targets for such drugs, as >40% of PNETs and ~35% of BNETs have mutations of the multiple endocrine neoplasia type 1 (MEN1) gene, which encodes menin that modifies histones by interacting with histone methyltransferases...
May 15, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28471129/management-of-a-multiple-endocrine-neoplasia-type-1-during-pregnancy-a-case-report-and-review-of-the-literature
#19
REVIEW
Halil Korkut Daglar, Ayse Kirbas, Ebru Biberoglu, Bergen Laleli, Nuri Danisman
Multiple Endocrine Neoplasia Type 1 (MEN1) or Wermer's syndrome is a rare hereditary endocrine syndrome with high penetrance caused by mutations in MEN1 tumor suppressor gene. MEN1 is characterized by hyperplasia or tumoral enlargement in a number of endocrine organs (parathyroid glands, pancreas, pituitary gland, adrenal gland) and it could be hormonally active or inactive. MEN1 is a significant cause of morbidity due to hormone secretion and mass effect. Since it is a rare condition, there are no guidelines with respect to the follow-up of pregnant women with MEN1...
July 2016: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/28470558/phase-ii-study-of-lanreotide-autogel-in-japanese-patients-with-unresectable-or-metastatic-well-differentiated-neuroendocrine-tumors
#20
Tetsuhide Ito, Yoshitaka Honma, Susumu Hijioka, Atsushi Kudo, Akira Fukutomi, Akira Nozaki, Yasutoshi Kimura, Fuyuhiko Motoi, Hiroyuki Isayama, Izumi Komoto, Seiichi Hisamatsu, Akihiro Nakajima, Akira Shimatsu
Background Lanreotide is a long-acting somatostatin analog with demonstrated efficacy against enteropancreatic neuroendocrine tumor (NET) in the phase III (CLARINET) study. Materials and Methods In this single-arm study, Japanese patients with grade (G) 1/G2 NET received lanreotide (120 mg/4 weeks) for 48 weeks. Those who completed the study were enrolled in a long-term extension study. The primary endpoint was the clinical benefit rate (CBR) defined as a complete response, partial response (PR), or stable disease (SD) over 24-weeks...
August 2017: Investigational New Drugs
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