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Endocrine pancreas

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https://www.readbyqxmd.com/read/28513069/predict-pancreatic-fistula-after-pancreaticoduodenectomy-ratio-body-thickness-main-duct
#1
Louise Barbier, Diane Mège, Anthony Reyre, Vincent M Moutardier, Jacques A Ewald, Jean-Robert Delpero
BACKGROUND: The occurrence of post-operative pancreatic fistula (POPF) after pancreaticoduodenectomy is a challenging issue. The aim was to identify variables on preoperative computed tomography (CT) scan, useful to predict clinically significant POPF (grades B-C) after pancreaticoduodenectomy. METHODS: Patients presented POPF after pancreaticoduodenectomy were included from two tertiary referral centres. B/W ratio was defined by ratio of pancreas body thickness (B) to main pancreatic duct (W)...
May 16, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28506430/george-e-palade-memorial-lecture-my-life-in-pancreatic-research-unexpected-results-may-open-the-door
#2
REVIEW
Makoto Otsuki
The Palade Prize is the most distinguished award of the IAP for achievement in pancreatic research. It is named after George E. Palade, who in 1974 was awarded the Nobel Prize for his work on protein trafficking in pancreatic acinar cells. It is a great honor to be awarded the 2016 Palade Prize. While I was in graduate school, I was conducting research on hypothalamo-pituitary-thyroid axis; after finishing graduate school, I began research on amylase isoenzymes. This was the first step of my pancreatic research...
May 6, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28505316/pancreas-atrophy-and-islet-amyloid-deposition-in-patients-with-elderly-onset-type-2-diabetes
#3
An Xin, Hiroki Mizukami, Wataru Inaba, Taro Yoshida, Yu-Ki Takeuchi, Soroku Yagihashi
Context: With prolonged life-expectancy, we often encounter patients with elderly onset type 2 diabetes (eT2DM). Although clinical features of eT2DM are suggested to be different from those in patients with middle-aged onset type 2 diabetes (mT2DM), islet pathology in eT2DM has not been addressed. Objective: We attempted to characterize the pancreatic pathology in eT2DM and sought for its clinical implication. Methods: Pancreata from 13 young non-diabetic (20-29 y...
May 12, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28504695/epigenetic-pathway-inhibitors-represent-potential-drugs-for-treating-pancreatic-and-bronchial-neuroendocrine-tumors
#4
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/28504618/butyrate-reduces-high-fat-diet-induced-metabolic-alterations-hepatic-steatosis-and-pancreatic-beta-cell-and-intestinal-barrier-dysfunctions-in-prediabetic-mice
#5
V A Matheus, Lcs Monteiro, R B Oliveira, D A Maschio, C B Collares-Buzato
In this study, we investigated the effect of diet supplementation with sodium butyrate (5% w/w), a short-chain fatty acid produced by the intestinal microbiota, on metabolic parameters, body adiposity, hepatic and pancreatic lipid accumulation, beta cell function/mass as well as on the structure and function of the tight junction-mediated intestinal epithelial barrier in both normal and obese/prediabetic C57 mice fed a regular (control) or high-fat diet for 60 days, respectively. Butyrate treatment significantly inhibited all the high-fat-induced metabolic dysfunctions evaluated, i...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28501762/poorly-differentiated-gastro-entero-pancreatic-neuroendocrine-carcinomas-are-they-really-heterogeneous-insights-from-the-ffcd-gte-national-cohort
#6
T Walter, D Tougeron, E Baudin, K Le Malicot, T Lecomte, D Malka, O Hentic, S Manfredi, I Bonnet, R Guimbaud, R Coriat, C Lepère, C Desauw, A Thirot-Bidault, L Dahan, G Roquin, T Aparicio, J-L Legoux, C Lombard-Bohas, J-Y Scoazec, C Lepage, G Cadiot
BACKGROUND: Diagnosis and management of poorly differentiated gastro-entero-pancreatic (GEP) neuroendocrine carcinomas (NECs) remain challenging. Recent studies suggest prognostic heterogeneity. We designed within the French Group of Endocrine Tumours a prospective cohort to gain insight in the prognostic stratification and treatment of GEP-NEC. PATIENTS AND METHODS: All patients with a diagnosis of GEP-NEC between 1st January 2010 and 31st December 2013 could be included in this national cohort...
May 11, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28500781/pregnancy-outcomes-in-simultaneous-pancreas-and-kidney-transplant-recipients-a-national-french-survey-study
#7
G Normand, F Brunner, L Badet, F Buron, M Catton, J Massardier, L Esposito, P Grimbert, G Mourad, J E Serre, S Caillard, G Karam, D Cantarovich, E Morelon, O Thaunat
Simultaneous pancreas and kidney transplantation (SPK) is currently the best therapeutic option for patients with type-1 diabetes and terminal renal failure. Renal transplantation restores fertility enabling women to pursue pregnancies. However, scarcity of available data on pregnancy outcomes in SPK impedes fair medical counseling. Medical files of all pregnancies that lasted ≥3 months among recipients of functional SPK performed between 1990 and 2015 in France were retrospectively analyzed. Twenty-six pregnancies in 22 SPK recipients were identified...
May 13, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28493059/characterization-of-oatp1b3-and-oatp2b1-transporter-expression-in-the-islet-of-the-adult-human-pancreas
#8
Michelle Kim, Perri Deacon, Rommel G Tirona, Richard B Kim, Christopher L Pin, Henriette E Meyer Zu Schwabedissen, Rennian Wang, Ute I Schwarz
Organic anion-transporting polypeptides (OATPs) are membrane proteins that mediate cellular uptake of structurally diverse endogenous and exogenous compounds, including bile salts, thyroid and sex hormones, pharmacological agents, and toxins. Roles of OATPs in human liver are well established. Our recent report suggested the presence of the hepatic transporter OATP1B3 in human β cells. The aim of this study was to better characterize cellular localization and interindividual variation in OATP1B3 expression in human adult islets as a function of age, sex, and pancreatic disease, and to assess the expression of other OATPs...
May 10, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28491431/hyperinsulinaemic-hypoglycaemic-syndrome-due-to-acquired-nesidioblastosis-in-a-cat
#9
Lydia E Hambrook, Amanda A Ciavarella, Judith S Nimmo, Julie Wayne
Case summary A 6-year-old, neutered female British Shorthair cat presented with acute-onset weakness and mental dullness. Initially the cat was mildly hyperglycaemic (9.9 mmol/l; reference interval [RI] 3.3-6.7 mmol/l). Over the following 12 h the cat developed central blindness, tremors, intermittent seizures and opisthotonus. Repeat blood sampling revealed a marked hypoglycaemia (0.8 mmol/l). Insulin level (performed on a serum sample collected while the cat was hypoglycaemic) was inappropriately elevated (1575 mIU/l; RI 10-80 mIU/l)...
July 2016: JFMS Open Rep
https://www.readbyqxmd.com/read/28487991/blood-glycemia-modulating-effects-of-melanian-snail-protein-hydrolysates-in-mice-with-type%C3%A2-ii-diabetes
#10
Jae-Suk Choi, Joo-Wan Kim, Jeong Been Park, Sang Eun Pyo, Yong-Ki Hong, Sae Kwang Ku, Mi-Ryung Kim
Freshwater animal proteins have long been used as nutrient supplements. In this study, melanian snail (Semisulcospira libertina) protein hydrolysates (MPh) were found to exert anti-diabetic and protective effects against liver and kidney damage in mice with type II diabetes adapted to a 45% kcal high-fat diet (HFD). The hypoglycemic, hepatoprotective and nephroprotective effects of MPh were analyzed after 12 weeks of the continuous oral administration of MPh at 125, 250 and 500 mg/kg. Diabetic control mice exhibited an increase in body weight, and blood glucose and insulin levels, with a decrease in serum high-density lipoprotein (HDL) levels...
June 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28471129/management-of-a-multiple-endocrine-neoplasia-type-1-during-pregnancy-a-case-report-and-review-of-the-literature
#11
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
#12
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...
May 3, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28464920/collision-of-ductal-adenocarcinoma-and-neuroendocrine-tumor-of-the-pancreas-a-case-report-and-review-of-the-literature
#13
Simone Serafini, Gianfranco Da Dalt, Gioia Pozza, Stella Blandamura, Michele Valmasoni, Stefano Merigliano, Cosimo Sperti
BACKGROUND: Simultaneous occurrence of exocrine and neuroendocrine tumors of the pancreas is very infrequent. We report a patient with an endocrine tumor in the pancreatic-duodenal area and extensive exocrine carcinoma involving the whole pancreas. CASE PRESENTATION: A 69-year-old woman was hospitalized in May 2016 for epigastric pain and weight loss. Her past medical history revealed an undefined main pancreatic duct dilation that was subsequently confirmed at CT scan (23 mm) and endoscopic ultrasound...
May 2, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28457793/multi-site-neurogenin3-phosphorylation-controls-pancreatic-endocrine-differentiation
#14
Roberta Azzarelli, Christopher Hurley, Magdalena K Sznurkowska, Steffen Rulands, Laura Hardwick, Ivonne Gamper, Fahad Ali, Laura McCracken, Christopher Hindley, Fiona McDuff, Sonia Nestorowa, Richard Kemp, Kenneth Jones, Berthold Göttgens, Meritxell Huch, Gerard Evan, Benjamin D Simons, Douglas Winton, Anna Philpott
The proneural transcription factor Neurogenin3 (Ngn3) plays a critical role in pancreatic endocrine cell differentiation, although regulation of Ngn3 protein is largely unexplored. Here we demonstrate that Ngn3 protein undergoes cyclin-dependent kinase (Cdk)-mediated phosphorylation on multiple serine-proline sites. Replacing wild-type protein with a phosphomutant form of Ngn3 increases α cell generation, the earliest endocrine cell type to be formed in the developing pancreas. Moreover, un(der)phosphorylated Ngn3 maintains insulin expression in adult β cells in the presence of elevated c-Myc and enhances endocrine specification during ductal reprogramming...
May 8, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28446479/severe-chronic-diarrhoea-secondary-to-primary-lymph-node-gastrinoma
#15
Mouhanna Abu Ghanimeh, Khalil Abuamr, Esmat Sadeddin, Osama Yousef
The existence of primary lymph node (LN) gastrinoma is questionable and controversial. In fact, the presence of gastrinoma in such uncommon site raises the possibility of metastasis from another occult primary site. An extensive evaluation and careful follow-up is always warranted. A female aged 48 years presented with chronic abdominal pain and watery diarrhoea. Her serum gastrin and chromogranin were elevated, and an underlying gastrinoma was suspected. Further evaluation with an octreotide scan, an endoscopic ultrasound and a secretin stimulation test confirmed the diagnosis...
April 26, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28444910/characterization-of-porcine-endogenous-retrovirus-expression-in-neonatal-and-adult-pig-pancreatic-islets
#16
Nizar I Mourad, Claire Crossan, Victoria Cruikshank, Linda Scobie, Pierre Gianello
BACKGROUND: Pig islets represent an alternative to the current modes of treatment for patients with diabetes. However, the concerns over pathogen transmission including that of PERV limit their immediate, widespread usage in humans. It has been previously demonstrated that PERV copy number and particularly expression levels can vary considerably between individuals and within different tissues of a single animal. In general, expression levels have been found to be particularly low in the pancreas compared to other porcine tissues suggesting a reduced risk associated with the use of this tissue...
April 26, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28441528/phosphorylation-of-neurog3-links-endocrine-differentiation-to-the-cell-cycle-in-pancreatic-progenitors
#17
Nicole A J Krentz, Dennis van Hoof, Zhongmei Li, Akie Watanabe, Mei Tang, Cuilan Nian, Michael S German, Francis C Lynn
During pancreatic development, proliferating pancreatic progenitors activate the proendocrine transcription factor neurogenin 3 (NEUROG3), exit the cell cycle, and differentiate into islet cells. The mechanisms that direct robust NEUROG3 expression within a subset of progenitor cells control the size of the endocrine population. Here we demonstrate that NEUROG3 is phosphorylated within the nucleus on serine 183, which catalyzes its hyperphosphorylation and proteosomal degradation. During progression through the progenitor cell cycle, NEUROG3 phosphorylation is driven by the actions of cyclin-dependent kinases 2 and 4/6 at G1/S cell-cycle checkpoint...
April 24, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28438671/alkaline-ph-induces-irr-mediated-phosphorylation-of-irs-1-and-actin-cytoskeleton-remodeling-in-a-pancreatic-beta-cell-line
#18
Igor E Deyev, Nadezhda V Popova, Oxana V Serova, Svetlana V Zhenilo, Marì Regoli, Eugenio Bertelli, Alexander G Petrenko
Secretion of mildly alkaline (pH 8.0-8.5) juice to intestines is one of the key functions of the pancreas. Recent reports indicate that the pancreatic duct system containing the alkaline juice may adjoin the endocrine cells of pancreatic islets. We have previously identified the insulin receptor-related receptor (IRR) that is expressed in islets as a sensor of mildly alkaline extracellular media. In this study, we show that those islet cells that are in contact with the excretory ducts are also IRR-expressing cells...
April 21, 2017: Biochimie
https://www.readbyqxmd.com/read/28433099/other-organ-involvement-and-clinical-aspects-of-wilson-disease
#19
Karolina Dzieżyc, Tomasz Litwin, Anna Członkowska
Wilson disease (WD) is a rare disorder of copper metabolism that presents mainly with hepatic and neuropsychiatric features. Copper accumulates not only in the liver and brain, but also in other organs. Liver injury can also be the cause of secondary impairment of other tissues. Therefore, the clinical manifestation of WD may be renal, cardiac, skin, osteoarticular, or endocrinologic and include other organ disturbances. Renal abnormalities include tubular dysfunction (e.g., renal tubular acidosis, aminoaciduria) and nephrolithiasis...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28432571/cell-therapy-for-type-1-diabetes-current-and-future-strategies
#20
REVIEW
Yasaman Aghazadeh, Maria Cristina Nostro
PURPOSE OF THE REVIEW: Type 1 diabetes (T1D) is defined by an autoimmune destruction of insulin producing β-cells located in the endocrine part of the pancreas, the islets of Langerhans. As exogenous insulin administration fails at preventing severe complications associated with this disease, cell replacement therapies are being considered as a means to treat T1D. The purpose of this manuscript is to review the challenges associated with current strategies and discuss the potential of stem cell therapy for the treatment of T1D...
June 2017: Current Diabetes Reports
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