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Exocrine pancreas

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https://www.readbyqxmd.com/read/28545033/microrna-expression-levels-as-diagnostic-biomarkers-for-intraductal-papillary-mucinous-neoplasm
#1
Lei Wang, Jianming Zheng, Chang Sun, Li Wang, Gang Jin, Lei Xin, Zhendong Jin, Dong Wang, Zhaoshen Li
Intraductal papillary mucinous neoplasms (IPMNs) are deadly exocrine mucinous tumors. Currently the molecular features and diagnostic markers of IPMNs are not well understood. In this study, we performed microRNA (miRNA) profiling assays to study the potential roles of miRNAs in IPMNs using 78 cases of IPMN patients and controls. When comparing the miRNA expression between IPMN patient samples and controls, we found that miR-210, miR-223, miR-221, miR-155 and miR-187 were differentially expressed in normal pancreas and IPMNs...
May 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28540837/enterovesical-fistula-after-enteric-conversion-of-a-bladder-drained-pancreatic-allograft-a-case-report
#2
Clifford Akateh, Amer Rajab, Mitchell Henry, Ashraf El-Hinnawi
Since the inception of pancreas transplant as a treatment for type 1 diabetes mellitus, there has been considerable debate about the best way to manage exocrine secretions and monitor patients for graft rejection. For patients who undergo bladder exocrine drainage of a pancreatic allograft, a bladder-to-enteric drainage conversion can serve as a rescue procedure in case of anastomotic leaks or other complications. However, this procedure is associated with its own complications, including a rarely described enterovesical fistula...
May 22, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28539403/sec23b-is-required-for-pancreatic-acinar-cell-function-in-adult-mice
#3
Rami Khoriaty, Nancy Vogel, Mark J Hoenerhoff, M Dolors Sans, Guojing Zhu, Lesley Everett, Bradley Nelson, Haritha Durairaj, Brooke McKnight, Bin Zhang, Stephen A Ernst, David Ginsburg, John A Williams
Mice with germline absence of SEC23B die perinatally, exhibiting massive pancreatic degeneration. We generated mice with tamoxifen-inducible, pancreatic acinar cell-specific Sec23b deletion. Inactivation of Sec23b exclusively in the pancreatic acinar cells of adult mice results in decreased overall pancreatic weights from pancreatic cell loss (decreased pancreatic DNA, RNA, and total protein content), as well as degeneration of exocrine cells, decreased zymogen granules, and alterations in the endoplasmic reticulum (ER), ranging from vesicular ER to markedly expanded cisternae with accumulation of moderate density content or intracisternal granules...
May 24, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28506430/george-e-palade-memorial-lecture-my-life-in-pancreatic-research-unexpected-results-may-open-the-door
#4
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/28491431/hyperinsulinaemic-hypoglycaemic-syndrome-due-to-acquired-nesidioblastosis-in-a-cat
#5
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/28481310/effects-of-melatonin-and-its-analogues-on-pancreatic-inflammation-enzyme-secretion-and-tumorigenesis
#6
REVIEW
Jolanta Jaworek, Anna Leja-Szpak, Katarzyna Nawrot-Porąbka, Joanna Szklarczyk, Michalina Kot, Piotr Pierzchalski, Marta Góralska, Piotr Ceranowicz, Zygmunt Warzecha, Artur Dembinski, Joanna Bonior
Melatonin is an indoleamine produced from the amino acid l-tryptophan, whereas metabolites of melatonin are known as kynuramines. One of the best-known kynuramines is N¹-acetyl-N¹-formyl-5-methoxykynuramine (AFMK). Melatonin has attracted scientific attention as a potent antioxidant and protector of tissue against oxidative stress. l-Tryptophan and kynuramines share common beneficial features with melatonin. Melatonin was originally discovered as a pineal product, has been detected in the gastrointestinal tract, and its receptors have been identified in the pancreas...
May 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28475629/purification-and-characterization-of-recombinant-human-bile-salt-stimulated-lipase-expressed-in-milk-of-transgenic-cloned-cows
#7
Yuhang Wang, Fangrong Ding, Tao Wang, Wenjie Liu, Susanne Lindquist, Olle Hernell, Jianwu Wang, Jing Li, Ling Li, Yaofeng Zhao, Yunping Dai, Ning Li
Bile salt-stimulated lipase (BSSL) is a lipolytic digestive enzyme with broad substrate specificity secreted from exocrine pancreas into the intestinal lumen in all species and from the lactating mammary gland into the milk of some species, notably humans but not cows. BSSL in breast milk facilitates digestion and absorption of milk fat and promotes growth of small for gestational age preterm infants. Thus, purified recombinant human BSSL (rhBSSL) can be used for treatment of patients with fat malabsorption and expressing rhBSSL in the milk of transgenic cloned cows would therefore be a mean to meet a medical need...
2017: PloS One
https://www.readbyqxmd.com/read/28464920/collision-of-ductal-adenocarcinoma-and-neuroendocrine-tumor-of-the-pancreas-a-case-report-and-review-of-the-literature
#8
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/28445877/benign-exocrine-pancreatic-diseases-in-inflammatory-bowel-diseases
#9
Raffaele Pezzilli, Nico Pagano
BACKGROUND: Data regarding the involvement of the pancreas during the course of inflammatory bowel disease (IBD) are scarce and conflicting. AIM: To assess the frequency of benign pancreatic diseases, that is, acute pancreatitis, chronic pancreatitis (CP), and autoimmune pancreatitis (AIP), in a population with IBD. METHODS: A search for patients with IBD who presented at our hospital between January 2006 and January 2015 with a diagnosis of IBD was carried out...
April 27, 2017: Digestive Diseases
https://www.readbyqxmd.com/read/28444910/characterization-of-porcine-endogenous-retrovirus-expression-in-neonatal-and-adult-pig-pancreatic-islets
#10
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/28438671/alkaline-ph-induces-irr-mediated-phosphorylation-of-irs-1-and-actin-cytoskeleton-remodeling-in-a-pancreatic-beta-cell-line
#11
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/28429818/piscirickettsia-salmonis-infection-in-cultured-lumpfish-cyclopterus-lumpus-l
#12
M Marcos-López, N M Ruane, F Scholz, M Bolton-Warberg, S O Mitchell, S Murphy O'Sullivan, A Irwin Moore, H D Rodger
A Piscirickettsia salmonis infection was diagnosed in lumpfish (Cyclopterus lumpus L.) juveniles held in a marine research facility on the west coast of Ireland. The main clinical signs and pathology included marked ascites, severe multifocal liver necrosis and severe diffuse inflammation and necrosis of the exocrine pancreas and peri-pancreatic adipose tissue. Numerous Piscirickettsia-like organisms were observed by histopathology in the affected organs, and the bacterial species was characterized by molecular analysis...
April 21, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28426339/fasting-levels-of-insulin-and-amylin-after-acute-pancreatitis-are-associated-with-pro-inflammatory-cytokines
#13
Nicola A Gillies, Sayali A Pendharkar, Ruma G Singh, John A Windsor, Madhav Bhatia, Maxim S Petrov
BACKGROUND: The prevalence of metabolic diseases continues to rise worldwide, with a growing recognition of metabolic dysregulation after acute inflammatory diseases such as acute pancreatitis (AP). Adipokines and cytokines play an important role in metabolism and the course of AP, but there is a paucity of research investigating their relationship with pancreatic hormones after AP. This study aimed to explore associations between pancreatic hormones with adipokines and cytokines to provide insights into the pathophysiology of altered pancreatic hormone secretion following AP...
April 20, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28413390/a-serous-cystic-neoplasm-of-the-pancreas-coexisting-with-high-grade-pancreatic-intraepithelial-neoplasia-mimicking-an-intraepithelial-papillary-mucinous-neoplasm-a-case-report
#14
Aya Kawanishi, Kenichi Hirabayashi, Hirotaka Kono, Yumi Takanashi, Atsuko Hadano, Yohei Kawashima, Masami Ogawa, Yoshiaki Kawaguchi, Misuzu Yamada, Toshio Nakagohri, Naoya Nakamura, Tetsuya Mine
Serous cystic neoplasms of the pancreas are rare exocrine pancreatic neoplasms, most of which are benign and do not communicate with the pancreatic duct. Pancreatic intraepithelial neoplasm (PanIN) is considered a precursor of ductal adenocarcinoma that is microscopically recognized in pancreatic ducts. A 67-year-old Japanese woman presented with a 10-mm multilocular cystic lesion at the pancreatic body. Magnetic resonance pancreatography showed stenosis of the main pancreatic duct at the pancreatic body and dilatation of the distal side of the main pancreatic duct...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28410364/loss-of-arf4-causes-severe-degeneration-of-the-exocrine-pancreas-but-not-cystic-kidney-disease-or-retinal-degeneration
#15
Jillian N Pearring, Jovenal T San Agustin, Ekaterina S Lobanova, Christopher J Gabriel, Eric C Lieu, William J Monis, Michael W Stuck, Lara Strittmatter, Samer M Jaber, Vadim Y Arshavsky, Gregory J Pazour
Arf4 is proposed to be a critical regulator of membrane protein trafficking in early secretory pathway. More recently, Arf4 was also implicated in regulating ciliary trafficking, however, this has not been comprehensively tested in vivo. To directly address Arf4's role in ciliary transport, we deleted Arf4 specifically in either rod photoreceptor cells, kidney, or globally during the early postnatal period. Arf4 deletion in photoreceptors did not cause protein mislocalization or retinal degeneration, as expected if Arf4 played a role in protein transport to the ciliary outer segment...
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28406494/laser-capture-microdissection-of-pancreatic-acinar-cells-to-identify-proteomic-alterations-in-a-murine-model-of-caerulein-induced-pancreatitis
#16
John P Shapiro, Hannah M Komar, Baris Hancioglu, Lianbo Yu, Ming Jin, Yuko Ogata, Phil A Hart, Zobeida Cruz-Monserrate, Gregory B Lesinski, Darwin L Conwell
OBJECTIVES: Chronic pancreatitis (CP) is characterized by inflammation and fibrosis of the pancreas, leading to pain, parenchymal damage, and loss of exocrine and endocrine function. There are currently no curative therapies; diagnosis remains difficult and aspects of pathogenesis remain unclear. Thus, there is a need to identify novel biomarkers to improve diagnosis and understand pathophysiology. We hypothesize that pancreatic acinar regions contain proteomic signatures relevant to disease processes, including secreted proteins that could be detected in biofluids...
April 13, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28404095/type-3c-pancreatogenic-diabetes-mellitus-secondary-to-chronic-pancreatitis-and-pancreatic-cancer
#17
REVIEW
Phil A Hart, Melena D Bellin, Dana K Andersen, David Bradley, Zobeida Cruz-Monserrate, Christopher E Forsmark, Mark O Goodarzi, Aida Habtezion, Murray Korc, Yogish C Kudva, Stephen J Pandol, Dhiraj Yadav, Suresh T Chari
Diabetes mellitus is a group of diseases defined by persistent hyperglycaemia. Type 2 diabetes, the most prevalent form, is characterised initially by impaired insulin sensitivity and subsequently by an inadequate compensatory insulin response. Diabetes can also develop as a direct consequence of other diseases, including diseases of the exocrine pancreas. Historically, diabetes due to diseases of the exocrine pancreas was described as pancreatogenic or pancreatogenous diabetes mellitus, but recent literature refers to it as type 3c diabetes...
November 2016: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28398495/a-histological-study-of-fulminant-type-1-diabetes-mellitus-related-to-human-cytomegalovirus-reactivation
#18
Sho Yoneda, Akihisa Imagawa, Kenji Fukui, Sae Uno, Junji Kozawa, Makoto Sakai, Toshiki Yumioka, Hiromi Iwahashi, Iichiro Shimomura
Context: Fulminant type 1 diabetes mellitus (T1DM) is thought to be partly caused by virus infection. Objective: This study investigated the mechanism of β cell destruction in fulminant T1DM after drug-induced hypersensitivity syndrome (DIHS). Methods: We determined the localization of viruses of human cytomegalovirus (HCMV), human herpesvirus 6 (HHV-6) and Epstein-Barr virus (EBV), and the expression of interferon regulatory factor 3 (IRF3) and viral receptors of Z DNA binding protein 1 (ZBP1) and retinoic acid-inducible gene I (RIG-I), together with inflammatory cells by immunohistochemistry of pancreas from an autopsy fulminant T1DM patient with DIHS or seven subjects with normal glucose tolerance who underwent pancreatectomy...
April 10, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28393070/assessment-of-toxicological-perturbations-and-variants-of-pancreatic-islet-development-in-the-zebrafish-model
#19
Karilyn E Sant, Haydee M Jacobs, Jiali Xu, Katrina A Borofski, Larry G Moss, Jennifer B Moss, Alicia R Timme-Laragy
The pancreatic islets, largely comprised of insulin-producing beta cells, play a critical role in endocrine signaling and glucose homeostasis. Because they have low levels of antioxidant defenses and a high perfusion rate, the endocrine islets may be a highly susceptible target tissue of chemical exposures. However, this endpoint, as well as the integrity of the surrounding exocrine pancreas, is often overlooked in studies of developmental toxicology. Disruption of development by toxicants can alter cell fate and migration, resulting in structural alterations that are difficult to detect in mammalian embryo systems, but that are easily observed in the zebrafish embryo model (Danio rerio)...
September 2016: Toxics
https://www.readbyqxmd.com/read/28385584/a-study-of-the-clinical-utility-of-a-20-minute-secretin-stimulated-endoscopic-pancreas-function-test-and-performance-according-to-clinical-variables
#20
Luis F Lara, Morihito Takita, James S Burdick, Daniel C DeMarco, Ronnie R Pimentel, Tolga Erim, Marlon F Levy
BACKGROUND AND AIMS: Direct pancreas juice testing of bicarbonate, lipase, or trypsin after stimulation by secretin or cholecystokinin is used to determine exocrine function, a surrogate for diagnosing chronic pancreatitis (CP). Endoscopic pancreas function tests (ePFTs), where a peak bicarbonate concentration (PBC) ≥80 mEq/L in pancreas juice is considered normal, are now used more frequently. In this ePFT, aspirates start 35 minutes after secretin administration because pancreas output peaks 30 minutes after secretagogue administration...
April 3, 2017: Gastrointestinal Endoscopy
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