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Pancreatic diseases

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https://www.readbyqxmd.com/read/29675957/endoplasmic-reticulum-stress-induces-spatial-memory-deficits-by-activating-gsk-3
#1
Li Lin, Jie Cao, Shu-Sheng Yang, Zheng-Qi Fu, Peng Zeng, Jiang Chu, Lin-Na Ning, Teng Zhang, Yan Shi, Qing Tian, Xin-Wen Zhou, Jian-Zhi Wang
Endoplasmic reticulum (ER) stress is involved in Alzheimer's disease (AD), but the mechanism is not fully understood. Here, we injected tunicamycin (TM), a recognized ER stress inducer, into the brain ventricle of Sprague-Dawley (SD) rats to induce the unfolded protein response (UPR), demonstrated by the enhanced phosphorylation of pancreatic ER kinase (PERK), inositol-requiring enzyme-1 (IRE-1) and activating transcription factor-6 (ATF-6). We observed that UPR induced spatial memory deficits and impairments of synaptic plasticity in the rats...
April 19, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29675259/successful-neoadjuvant-peptide-receptor-radionuclide-therapy-for-an-inoperable-pancreatic-neuroendocrine-tumour
#2
Tiago Nunes da Silva, M L F van Velthuysen, Casper H J van Eijck, Jaap J Teunissen, J Hofland, Wouter W de Herder
Non-functional pancreatic neuroendocrine tumours (NETs) can present with advanced local or distant (metastatic) disease limiting the possibility of surgical cure. Several treatment options have been used in experimental neoadjuvant settings to improve the outcomes in such cases. Peptide receptor radionuclide therapy (PPRT) using beta emitting radiolabelled somatostatin analogues has been used in progressive pancreatic NETs. We report a 55-year-old female patient with a 12.8 cm pancreatic NET with significant local stomach and superior mesenteric vein compression and liver metastases...
2018: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29675041/antitumor-activity-of-intratumoral-ethanol-injection-in-an-orthotopic-pancreatic-cancer-cell-mouse-xenograft-model
#3
Wen-Ying Zhang, Zhen-Dong Jin, Feng Liu, Hai-Hua Yuan, Bin Jiang
Purpose: Pancreatic cancer is a lethal disease and usually is diagnosed at advanced stages of disease. This study assessed the effects of intratumoral ethanol injection using an endoscopic ultrasound (EUS) probe on the control of pancreatic cancer in a mouse orthotopic xenograft model. Materials and Methods: The subcutaneous and orthotopic human pancreatic cancer cell mouse xenograft models were established. Different concentrations of ethanol (0-95%) were injected into subcutaneous xenograft tumors...
2018: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/29674761/impact-of-body-mass-index-on-survival-of-pancreatic-cancer-patients-in-japan
#4
Tomohiro Okura, Masakuni Fujii, Junji Shiode, Yuri Ito, Toru Kojima, Junichiro Nasu, Takefumi Niguma, Masao Yoshioka, Tetsushige Mimura, Kazuhide Yamamoto
The impact of body mass index (BMI) on postoperative survival in Japanese patients with pancreatic cancer is unclear. We examined the relationship between preoperative BMI and the prognosis of Japanese patients who underwent surgery for pancreatic cancer to determine whether BMI affects these patients' prognosis. Of the patients who underwent pancreatectomy between January 2004 and August 2015 at our institution, 246 were pathologically diagnosed with pancreatic tubular adenocarcinoma; the cancer was located in the pancreatic head (n=161) and in the body and tail (n=85)...
April 2018: Acta Medica Okayama
https://www.readbyqxmd.com/read/29673066/total-pancreaticoduodenectomy-with-autologous-islet-transplantation-fourteen-years-after-liver-contained-composite-visceral-transplantation
#5
Ahmed Nassar, Cristiano Quintini, Guilherme Costa, Elizabeth Lennon, Rita Bottino, Betul Hatipoglu, Koji Hashimoto, Masato Fujiki, Fouad Kandeel, R Matthew Walsh, Kareem Abu-Elmagd
Chronic pancreatitis (CP) is a severely disabling disorder with potential detrimental effects on quality of life, gut function, and glucose homeostasis. Disease progression often results in irreversible morphological and functional abnormalities with development of chronic pain, mechanical obstruction, and pancreatic insufficiency. Along with comprehensive medical management, the concept of total pancreatectomy and islet autotransplantation (TP-AIT) was introduced forty years ago for patients with intractable pain and preserved beta-cell function...
April 19, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29672416/determinants-of-severity-in-acute-pancreatitis-a-nation-wide-multicenter-prospective-cohort-study
#6
Hanna Sternby, Federico Bolado, Héctor J Canaval-Zuleta, Carlos Marra-López, Ana I Hernando-Alonso, Adolfo Del-Val-Antoñana, Guillermo García-Rayado, Robin Rivera-Irigoin, Francisco J Grau-García, Lluís Oms, Judith Millastre-Bocos, Isabel Pascual-Moreno, David Martínez-Ares, Juan A Rodríguez-Oballe, Antonio López-Serrano, María L Ruiz-Rebollo, Alejandro Viejo-Almanzor, Belén González-de-la-Higuera, Aitor Orive-Calzada, Ignacio Gómez-Anta, José Pamies-Guilabert, Fátima Fernández-Gutiérrez-Del-Álamo, Isabel Iranzo-González-Cruz, Mónica E Pérez-Muñante, María D Esteba, Ana Pardillos-Tomé, Pedro Zapater, Enrique de-Madaria
OBJECTIVE: The aim of this study was to compare and validate the different classifications of severity in acute pancreatitis (AP) and to investigate which characteristics of the disease are associated with worse outcomes. SUMMARY OF BACKGROUND DATA: AP is a heterogeneous disease, ranging from uneventful cases to patients with considerable morbidity and high mortality rates. Severity classifications based on legitimate determinants of severity are important to correctly describe the course of disease...
April 18, 2018: Annals of Surgery
https://www.readbyqxmd.com/read/29672365/the-impact-of-epidemiological-factors-and-treatment-interventions-on-survival-in-patients-with-signet-ring-cell-carcinoma-of-the-pancreas
#7
Mausam Patel, Harliv S Hans, Kelsey Pan, Humza Khan, Elie Donath, Humberto Caldera
OBJECTIVES: Primary pancreatic signet ring cell carcinoma (SRCC) is a rare histologic variant of pancreatic carcinoma. A population-based analysis of pancreatic SRCC was performed to determine the predictive effects of epidemiological factors and treatment interventions on overall survival (OS) and disease-specific survival (DSS). MATERIALS AND METHODS: The Surveillance, Epidemiology, and End Results registry was searched for pancreatic SRCC cases diagnosed between January 1, 1973 and December 31, 2013...
April 18, 2018: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29672153/p21-activated-kinase4-in-pancreatic-acini-is-activated-by-gi-hormones-growth-factors-by-novel-signaling-and-is-needed-to-stimulate-secretory-growth-cascades
#8
Irene Ramos-Alvarez, Robert T Jensen
p21-activated kinases(PAKs) are highly conserved serine/threonine protein kinases, which are divided into two groups:Group-I(PAKs1-3) and Group-II(PAKs4-6). In various tissues, Group-II PAKs play important roles in cytoskeletal dynamics, cell growth as well as neoplastic development/progression. However, little is known about Group-II PAKs role in a number of physiological events including their ability to be activated by gastrointestinal(GI) hormones/neurotransmitters/growth-factors(GFs). We used rat pancreatic acini to explore the ability of GI-hormones/neurotransmitters/GFs to activate Group-II-PAKs and the signaling cascades involved...
April 19, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29671537/chronic-pancreatitis-diagnosis-and-treatment
#9
Kathleen Barry
Chronic pancreatitis is an irreversible and progressive disorder of the pancreas characterized by inflammation, fibrosis, and scarring. Exocrine and endocrine functions are lost, often leading to chronic pain. The etiology is multifactorial, although alcoholism is the most significant risk factor in adults. The average age at diagnosis is 35 to 55 years. If chronic pancreatitis is suspected, contrast-enhanced computed tomography is the best imaging modality for diagnosis. Computed tomography may be inconclusive in early stages of the disease, so other modalities such as magnetic resonance imaging, magnetic resonance cholangiopancreatography, or endoscopic ultrasonography with or without biopsy may be used...
March 15, 2018: American Family Physician
https://www.readbyqxmd.com/read/29671412/possible-molecular-markers-for-the-diagnosis-of-pancreatic-ductal-adenocarcinoma
#10
Quan Shen, Miao Yu, Jiang-Kun Jia, Wen-Xi Li, Yu-Wei Tian, Huan-Zhou Xue
BACKGROUND We aimed to identify pivotal genes and pathways involved in pancreatic ductal adenocarcinoma (PDAC), and explore possible molecular markers for the early diagnosis of the disease. MATERIAL AND METHODS The array data of GSE74629, including 34 PDAC samples and 16 healthy samples, was downloaded from GEO (Gene Expression Omnibus) database. Then, the DEGs (differentially expressed genes) in PDAC samples were compared with healthy samples using limma (linear models for microarray). Gene functional interaction networks were analyzed with Cytoscape and ReactomeFIViz...
April 19, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29671030/abnormal-islet-sphingolipid-metabolism-in-type-1-diabetes
#11
Laurits J Holm, Lars Krogvold, Jane P Hasselby, Simranjeet Kaur, Laura A Claessens, Mark A Russell, Clayton E Mathews, Kristian F Hanssen, Noel G Morgan, Bobby P C Koeleman, Bart O Roep, Ivan C Gerling, Flemming Pociot, Knut Dahl-Jørgensen, Karsten Buschard
AIMS/HYPOTHESIS: Sphingolipids play important roles in beta cell physiology, by regulating proinsulin folding and insulin secretion and in controlling apoptosis, as studied in animal models and cell cultures. Here we investigate whether sphingolipid metabolism may contribute to the pathogenesis of human type 1 diabetes and whether increasing the levels of the sphingolipid sulfatide would prevent models of diabetes in NOD mice. METHODS: We examined the amount and distribution of sulfatide in human pancreatic islets by immunohistochemistry, immunofluorescence and electron microscopy...
April 18, 2018: Diabetologia
https://www.readbyqxmd.com/read/29670799/a-modified-technique-for-laparoscopic-spleen-preserving-distal-pancreatectomy
#12
Andreas Papatriantafyllou, Theodoros Mavromatis, Theano Demestiha, Dimitrios Filippou, Panagiotis Skandalakis
Spleen preserving laparoscopic distal pancreatectomy is considered as first choice operation for symptomatic benign or small malignant lesions located at the body or tail of the pancreas. The two main surgical techniques that have been proposed and widely adopted for spleen preserving laparoscopic distal pancreatectomy are the Warshaw and Kimura techniques. A novel modified approach for laparoscopic spleen preserving distal pancreatectomy is presented. The technique was initially performed in a 57-year-old female patient with mucinous cystadenoma...
2018: Case Reports in Surgery
https://www.readbyqxmd.com/read/29670543/phosphoinositide-3-kinase-signaling-pathway-in-pancreatic-ductal-adenocarcinoma-progression-pathogenesis-and-therapeutics
#13
REVIEW
Divya Murthy, Kuldeep S Attri, Pankaj K Singh
Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive malignancy characterized by its sudden manifestation, rapid progression, poor prognosis, and limited therapeutic options. Genetic alterations in key signaling pathways found in early pancreatic lesions are pivotal for the development and progression of pancreatic intraepithelial neoplastic lesions into invasive carcinomas. More than 90% of PDAC tumors harbor driver mutations in K-Ras that activate various downstream effector-signaling pathways, including the phosphoinositide-3-kinase (PI3K) pathway...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29670110/tumor-associated-macrophages-promote-progression-and-the-warburg-effect-via-ccl18-nf-kb-vcam-1-pathway-in-pancreatic-ductal-adenocarcinoma
#14
Huilin Ye, Quanbo Zhou, Shangyou Zheng, Guolin Li, Qing Lin, Lusheng Wei, Zhiqiang Fu, Bin Zhang, Yimin Liu, Zhihua Li, Rufu Chen
Tumor-associated macrophages (TAMs) are frequently found near pancreatic cancer cells, but it is uncertain whether they are involved in pancreatic cancer progression and the Warburg effect. Here, we show that CCL18 secreted by TAMs facilitates malignant progression and induced a glycolytic phenotype in pancreatic cancer, partially owing to paracrine induction of VCAM-1 in pancreatic cancer cells. Reciprocally, VCAM-1-induced lactate production from pancreatic cancer cells with enhanced aerobic glycolysis activates macrophages to a TAM-like phenotype, forming a positive feedback loop...
April 18, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29669940/generation-and-testing-of-clinical-grade-exosomes-for-pancreatic-cancer
#15
Mayela Mendt, Sushrut Kamerkar, Hikaru Sugimoto, Kathleen M McAndrews, Chia-Chin Wu, Mihai Gagea, Sujuan Yang, Elena V Rodriges Blanko, Qian Peng, Xiaoyan Ma, Joseph R Marszalek, Anirban Maitra, Cassian Yee, Katayoun Rezvani, Elizabeth Shpall, Valerie S LeBleu, Raghu Kalluri
Exosomes are extracellular vesicles produced by all cells with a remarkable ability to efficiently transfer genetic material, including exogenously loaded siRNA, to cancer cells. Here, we report on a bioreactor-based, large-scale production of clinical-grade exosomes employing good manufacturing practice (GMP) standards. A standard operating procedure was established to generate engineered exosomes with the ability to target oncogenic Kras (iExosomes). The clinical-grade GMP iExosomes were tested in multiple in vitro and in vivo studies to confirm suppression of oncogenic Kras and an increase in the survival of several mouse models with pancreatic cancer...
April 19, 2018: JCI Insight
https://www.readbyqxmd.com/read/29669939/cystic-fibrosis-related-diabetes-is-caused-by-islet-loss-and-inflammation
#16
Nathaniel J Hart, Radhika Aramandla, Gregory Poffenberger, Cody Fayolle, Ariel H Thames, Austin Bautista, Aliya F Spigelman, Jenny Aurielle B Babon, Megan E DeNicola, Prasanna K Dadi, William S Bush, Appakalai N Balamurugan, Marcela Brissova, Chunhua Dai, Nripesh Prasad, Rita Bottino, David A Jacobson, Mitchell L Drumm, Sally C Kent, Patrick E MacDonald, Alvin C Powers
Cystic fibrosis-related (CF-related) diabetes (CFRD) is an increasingly common and devastating comorbidity of CF, affecting approximately 35% of adults with CF. However, the underlying causes of CFRD are unclear. Here, we examined cystic fibrosis transmembrane conductance regulator (CFTR) islet expression and whether the CFTR participates in islet endocrine cell function using murine models of β cell CFTR deletion and normal and CF human pancreas and islets. Specific deletion of CFTR from murine β cells did not affect β cell function...
April 19, 2018: JCI Insight
https://www.readbyqxmd.com/read/29669788/h19-induces-abdominal-aortic-aneurysm-development-and-progression
#17
Daniel Y Li, Albert Busch, Hong Jin, Ekaterina Chernogubova, Jaroslav Pelisek, Joakim Karlsson, Bengt Sennblad, Shengliang Liu, Shen Lao, Patrick Hofmann, Alexandra Bäcklund, Suzanne M Eken, Joy Roy, Per Eriksson, Brian Dacken, Deepak Ramanujam, Anne Dueck, Stefan Engelhardt, Reinier A Boon, Hans-Henning Eckstein, Joshua M Spin, Philip S Tsao, Lars Maegdefessel
Background -Long noncoding RNAs (lncRNAs) have emerged as critical molecular regulators in various biological processes and diseases. Here we sought to identify and functionally characterize lncRNAs as potential mediators in abdominal aortic aneurysm (AAA) development. Methods -We profiled RNA transcript expression in two murine AAA models, Angiotensin II (ANGII) infusion in ApoE-/- mice ( n =8) and porcine pancreatic elastase (PPE) instillation in C57BL/6 wildtype mice ( n =12). The lncRNA H19 was identified as one of the most highly up-regulated transcripts in both mouse aneurysm models compared to sham-operated controls...
April 18, 2018: Circulation
https://www.readbyqxmd.com/read/29669309/emodin-ameliorates-ulcerative-colitis-by-the-flagellin-tlr5-dependent-pathway-in-mice
#18
Shuang Luo, Xiangliang Deng, Qi Liu, Zengfeng Pan, Zhongxiang Zhao, Lian Zhou, Xia Luo
Emodin is an anthraquinone compound derived from Rheum officinale Baill. Several reports showed that emodin had efficacy on acute pancreatitis, keratitis, myocarditis, and rheumatoid arthritis. However, the potency of emodin on ulcerative colitis(UC) remains unclear. In this study, we investigated the effect of emodin on dextran sodium sulfate (DSS)-induced ulcerative colitis in mice. Our results showed that emodin significantly alleviated the symptoms of DSS-induced UC in mice, involving prevented the loss of body weight and colon shortening, decreased the disease activity index (DAI), intestinal damages and the count of white blood cells (WBC) in peripheral blood...
April 15, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29668413/pancreatic-adenocarcinoma-staging-in-the-era-of-preoperative-chemotherapy-and-radiation-therapy
#19
Marc Zins, Celso Matos, Christophe Cassinotto
Pancreatic ductal adenocarcinoma (PDA) remains among the most challenging malignancies to treat. At diagnosis, the tumor often already extends beyond the confines of the pancreas, spreading to an extent such that primary surgery with curative intent is very rarely feasible. Considerable momentum is now being given to a treatment strategy involving neoadjuvant chemotherapy or chemotherapy and radiation therapy in patients with nonmetastatic PDA. The main advantage of this strategy is better selection of patients likely to benefit from curative-intent surgery through the achievement of negative resection margins...
May 2018: Radiology
https://www.readbyqxmd.com/read/29667116/intraoperative-pancreatic-cancer-detection-using-tumor-specific-multimodality-molecular-imaging
#20
Willemieke S Tummers, Sarah E Miller, Nutte T Teraphongphom, Adam Gomez, Idan Steinberg, David M Huland, Steve Hong, Sri-Rajasekhar Kothapalli, Alifia Hasan, Robert Ertsey, Bert A Bonsing, Alexander L Vahrmeijer, Rutger-Jan Swijnenburg, Teri A Longacre, George A Fisher, Sanjiv S Gambhir, George A Poultsides, Eben L Rosenthal
BACKGROUND: Operative management of pancreatic ductal adenocarcinoma (PDAC) is complicated by several key decisions during the procedure. Identification of metastatic disease at the outset and, when none is found, complete (R0) resection of primary tumor are key to optimizing clinical outcomes. The use of tumor-targeted molecular imaging, based on photoacoustic and fluorescence optical imaging, can provide crucial information to the surgeon. The first-in-human use of multimodality molecular imaging for intraoperative detection of pancreatic cancer is reported using cetuximab-IRDye800, a near-infrared fluorescent agent that binds to epidermal growth factor receptor...
April 17, 2018: Annals of Surgical Oncology
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