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https://www.readbyqxmd.com/read/28346775/hyperinsulinism-causing-mutations-cause-multiple-molecular-defects-in-sur1-nbd1
#1
Claudia Paola Alvarez, Marijana Stagljar, D Ranjith Muhandiram, Voula Kanelis
The sulfonylurea receptor 1 (SUR1) protein forms the regulatory subunit in ATP sensitive K+ (KATP) channels in the pancreas. SUR proteins are members of the ATP-binding cassette (ABC) superfamily of proteins. Binding and hydrolysis of MgATP at the SUR nucleotide binding domains (NBDs) lead to channel opening. Pancreatic KATP channels play an important role in insulin secretion. SUR1 mutations that result in increased channel opening ultimately inhibit insulin secretion and lead to neonatal diabetes. In contrast, SUR1 mutations that disrupt trafficking and/or decrease gating of KATP channels cause congenital hyperinsulinism, where over secretion of insulin occurs even in the presence of low glucose...
March 27, 2017: Biochemistry
https://www.readbyqxmd.com/read/28346693/using-a-novel-nqo1-bioactivatable-drug-beta-lapachone-arq761-to-enhance-chemotherapeutic-effects-by-metabolic-modulation-in-pancreatic-cancer
#2
Muhammad Shaalan Beg, Xiumei Huang, Molly A Silvers, David E Gerber, Joyce Bolluyt, Venetia Sarode, Farjana Fattah, Ralph J Deberardinis, Matthew E Merritt, Xian-Jin Xie, Richard Leff, Daniel Laheru, David A Boothman
Novel, tumor-selective therapies are needed to increase the survival rate of pancreatic cancer patients. K-Ras-mutant-driven NAD(P)H:quinone oxidoreductase 1 (NQO1) is over-expressed in pancreatic tumor versus associated normal tissue, while catalase expression is lowered compared to levels in associated normal pancreas tissue. ARQ761 undergoes a robust, futile redox cycle in NQO1+ cancer cells, producing massive hydrogen peroxide (H2 O2 ) levels; normal tissues are spared by low NQO1 and high catalase expression...
March 27, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28346520/downregulation-of-mir-139-5p-contributes-to-the-antiapoptotic-effect-of-liraglutide-on-the-diabetic-rat-pancreas-and-ins-1-cells-by-targeting-irs1
#3
Jin Li, Lei Su, Ying-Ying Gong, Mei-Lin Ding, Shu-Bin Hong, Shuang Yu, Hai-Peng Xiao
Liraglutide is administered as glucagon-like peptide-1 (GLP-1) receptor agonist for diabetic patients and can protect pancreatic β-cells by inhibiting their apoptosis. MicroRNA-139-5p (miRNA-139-5p) participates in the regulation of cancer cell apoptosis. However, it is not clear whether miR-139-5p contributes to the anti-apoptotic effect of liraglutide in β-cells. The objective of the present study was to investigate the role of miR-139-5p on apoptosis of pancreatic β-cells. MicroRNA levels in pancreatic tissue from diabetic rats and INS-1 cells treated with liraglutide were measured by real-time quantitative RT-PCR...
2017: PloS One
https://www.readbyqxmd.com/read/28344687/disseminated-pancreatic-neuroendocrine-neoplasm-nen-with-an-uncommon-localisation-in-the-central-nervous-system-a-case-report
#4
Joanna Białkowska, Agnieszka Kolasińska-Ćwikła, Dorota Mroczkowska, Mariusz Sowa, Łukasz Grabarczyk, Wojciech Maksymowicz, Andrzej Cichocki, Jarosław B Ćwikła
BACKGROUND: Neuroendocrine neoplasms (NEN) are rare neoplasms that originate from neuroendocrine cells and are characterized by the potential of hormonal activity. Approximately 70% of these tumours are located in the gastrointestinal system (GI), followed by the bronchi, endocrine glands-like C cells of the thyroid (medullary carcinoma), the parasympathetic and sympathetic system (paragangliomas, pheochromocytoma) and other very rare locations. The prevalence of cerebral metastases in neuroendocrine tumours is estimated by various authors to be approximately 1...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28344516/ulinastatin-ameliorates-tissue-damage-of-severe-acute-pancreatitis-through-modulating-regulatory-t-cells
#5
Yu Pan, Haizong Fang, Fengchun Lu, Minggui Pan, Fei Chen, Ping Xiong, Yi Yao, Heguang Huang
BACKGROUND: Ulinastatin or urinary trypsin inhibitor (UTI) has been shown to ameliorate the inflammatory response induced by experimental severe acute pancreatitis (SAP) and hence reduce the mortality, however the mechanism of its action remains incompletely understood. We have investigated the effect of ulinastatin on regulatory T-cells (Tregs) in an established rat model of SAP. METHODS: We established a rat SAP model by injecting 5% Na-taurocholate into the pancreatic duct and treated the SAP rats with ulinastatin with different dose level (5000, 10000, 30000 U/kg) through intraperitoneal injection at 0, 6 and 12 h...
2017: Journal of Inflammation
https://www.readbyqxmd.com/read/28343174/mirna-analysis-in-pancreatic-cancer-the-dartmouth-experience
#6
Francine B de Abreu, Xiaoying Liu, Gregory J Tsongalis
Pancreatic cancer is considered one of the most lethal cancers being the fourth leading cause of cancer deaths in adults in the United States because of the lack of early signs and symptoms and the lack of early detection. Pancreatic ductal adenocarcinoma (PDAC) is the most common histological type among pancreatic cancers, representing 80%-90% of all solid tumors of the pancreas. The majority of PDAC develops from three precursor lesions: pancreatic intraepithelial neoplasia, intraductual papillary mucinous neoplasm and mucinous cystic neoplasm...
March 27, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28343084/role-of-pterostilbene-in-attenuating-immune-mediated-devastation-of-pancreatic-beta-cells-via-nrf2-signaling-cascade
#7
Dornadula Sireesh, Munuswamy-Ramanujam Ganesh, Umapathy Dhamodharan, Murugesan Sakthivadivel, Srinivasan Sivasubramanian, Palani Gunasekaran, Kunka Mohanram Ramkumar
Nrf2 (nuclear factor erythroid 2-related factor-2) is a transcription factor that regulates oxidative/xenobiotic stress response and also suppress inflammation. Nrf2 signaling is associated with an increased susceptibility to various kinds of stress. Nrf2 has been shown as a promising therapeutic target in various human diseases including diabetes. Our earlier studies showed Pterostilbene (PTS) as a potent Nrf2 activator, and it protects the pancreatic β-cells against oxidative stress. In this study, we investigated PTS confer protection against cytokine-induced β-cell apoptosis and its role on insulin secretion in streptozotocin (STZ)-induced diabetic mice...
March 6, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28343030/diagnostic-and-therapeutic-role-of-endoscopic-retrograde-pancreatography-in-the-management-of-traumatic-pancreatic-duct-injury-patients-single-center-experience-for-34-years
#8
Seongyup Kim, Jae Woo Kim, Pil Young Jung, Hye Youn Kwon, Hongjin Shim, Ji Young Jang, Keum Seok Bae
BACKGROUND: Traumatic pancreatic injuries are rare and present diagnostic and therapeutic difficulties. We evaluated the usefulness of endoscopic retrograde pancreatography and transpapillary pancreatic stent in the diagnosis and treatment of pancreatic trauma patients. METHODS: We reviewed medical records of 83 pancreas trauma patients who underwent endoscopic retrograde pancreatography for the suspicion of pancreas duct injury between January 1983 and December 2016...
March 22, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28342950/progression-of-unresected-intraductal-papillary-mucinous-neoplasms-of-the-pancreas-to-cancer-a-systematic-review-and-meta-analysis
#9
Sang Hyun Choi, Seong Ho Park, Kyung Won Kim, Ja Youn Lee, Sang Soo Lee
BACKGROUND & AIMS: It is not clear how best to manage patients with low-risk intraductal papillary mucinous neoplasms (IPMNs) of the pancreas, because little is known about IPMN progression to cancer. We sought to determine the cumulative incidence of development of pancreatic cancer in persons with unresected IPMNs (particularly low-risk IPMNs). METHODS: We performed a systematic search of the MEDLINE and EMBASE databases, through November 31, 2016, for studies reporting the cumulative incidence of pancreatic cancer in patients with unresected IPMNs, or studies that provided data in sufficient detail for us to calculate cumulative incidence values...
March 22, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28342645/the-expression-and-activation-of-the-aim2-inflammasome-correlates-with-inflammation-and-disease-severity-in-patients-with-acute-pancreatitis
#10
Francisco Algaba-Chueca, Enrique de-Madaria, Beatriz Lozano-Ruiz, Claudia Martínez-Cardona, Noé Quesada-Vázquez, Victoria Bachiller, Fabián Tarín, José Such, Rubén Francés, Pedro Zapater, José M González-Navajas
BACKGROUND: Acute pancreatitis is an inflammatory disorder of the pancreas that is responsible for significant morbidity and mortality. The inflammasome pathway has acquired significant relevance in the pathogenesis of many inflammatory disorders, but its role in patients with acute pancreatitis still awaits clarification. METHODS: We performed a prospective study in which 27 patients with acute pancreatitis and 16 healthy controls were included. We isolated peripheral blood mononuclear cells (PBMCs) and we assessed the expression and activation of different inflammasomes as well as their association with the clinical course of the disease...
March 18, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28342127/robotic-single-site-plus-one-port-distal-pancreatectomy
#11
Sung Hyun Kim, Chang Moo Kang, Woo Jung Lee
Laparoscopic distal pancreatectomy is regarded as safe and effective surgical approach in benign and low-grade malignant tumor of the pancreas. With the advances of laparoscopic techniques and instruments, many efforts to reduce the number of the trocar site has been made. There are a few available surgical techniques of laparoscopic single-site (single port or reduced port) distal pancreatectomy, suggesting its safety and feasibility. However, it is true that laparoscopic single-site distal pancreatectomy is difficult and technically quite demanding...
March 24, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28341510/endovascular-stenting-of-portal-vein-for-graft-rescue-after-a-pancreas-transplant-venous-graft-thrombosis-a-case-report
#12
Ossama M Reslan, Jordan M Kirsch, Hitesh Kaul, Stalin Campos, Radi Zaki, Paul S Brady, Kamran Khanmoradi
Venous thrombosis of pancreas transplant allografts often leads to graft loss. Its worrisome complication and difficult to treat, forming the most common nonimmunological cause of graft loss. Multiple risk factors have been implicated in the development of venous thrombosis of pancreas transplant. Color Doppler ultrasonography (CDUS) enables early diagnosis of venous thrombosis, thus increasing the possibility of graft-rescue treatments. Endovascular management of pancreatic transplant vascular complications are scant and in the form of case reports...
March 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28340694/composition-and-organization-of-the-pancreatic-extracellular-matrix-by-combined-methods-of-immunohistochemistry-proteomics-and-scanning-electron-microscopy
#13
S Vigier, H Gagnon, K Bourgade, K Klarskov, T Fülöp, P Vermette
The epidemic expansion of diabetes is a major concern of public health. A promising treatment is the transplantation of islets of Langerhans isolated from the whole pancreas but the yields of islets isolation and the rates of successful engraftments still have to be improved to make this therapy effective. The extracellular matrix (ECM) of the pancreatic tissue is partially lost during the isolation process and a comprehensive knowledge of the pancreatic ECM composition and organization could identify targets to improve islets isolation and transplantation or highlight new therapeutics for pancreatic diseases...
January 2017: Current Research in Translational Medicine
https://www.readbyqxmd.com/read/28339466/in-silico-search-for-modifier-genes-associated-with-pancreatic-and-liver-disease-in-cystic-fibrosis
#14
Pascal Trouvé, Emmanuelle Génin, Claude Férec
Cystic Fibrosis is the most common lethal autosomal recessive disorder in the white population, affecting among other organs, the lung, the pancreas and the liver. Whereas Cystic Fibrosis is a monogenic disease, many studies reveal a very complex relationship between genotype and clinical phenotype. Indeed, the broad phenotypic spectrum observed in Cystic Fibrosis is far from being explained by obvious genotype-phenotype correlations and it is admitted that Cystic Fibrosis disease is the result of multiple factors, including effects of the environment as well as modifier genes...
2017: PloS One
https://www.readbyqxmd.com/read/28337946/up-regulation-of-cxcr4-expression-contributes-to-persistent-abdominal-pain-in-rats-with-chronic-pancreatitis
#15
Hong-Yan Zhu, Xuelian Liu, Xiuhua Miao, Di Li, Shusheng Wang, Guang-Yin Xu
Background Pain in patients with chronic pancreatitis is critical hallmark that accompanied inflammation, fibrosis, and destruction of glandular pancreas. Many researchers have demonstrated that stromal cell-derived factor 1 (also named as CXCL12) and its cognate receptor C-X-C chemokine receptor type 4 (CXCR4) involved in mediating neuropathic and bone cancer pain. However, their roles in chronic pancreatic pain remain largely unclear. Methods Chronic pancreatitis was induced by intraductal injection of trinitrobenzene sulfonic acid to the pancreas...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28337739/intraductal-neoplasms-of-the-bile-duct-a-new-challenge-to-biliary-tract-tumor-pathology
#16
REVIEW
Yasuni Nakanuma, Katsuhiko Uesaka, Shiro Miyayama, Hiroshi Yamaguchi, Masayuki Ohtsuka
Invasive biliary tract carcinomas are usually tubular adenocaricnomas with abundant desmoplastic reactions and frequent ductal and periductal invasion at the time of the diagnosis. Recently, several intraductal neoplasms of the bile duct, particularly at a pre-invasive stage, have been recognized. They include intraductal papillary neoplasm of the bile duct (IPNB), biliary intraepithelial neoplasm (BilIN), and others, such as intraductal tubulopapillary neoplasm (ITPN) of the bile duct. IPNBs are grossly visible predominantly intraductal-growing papillary neoplasms covered by well-differentiated neoplastic epithelium with fine fibrovascular cores in the dilated bile ducts...
March 24, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28336499/radical-resection-of-the-pancreas-should-not-always-be-necessary-in-the-surgical-management-of-pancreatic-solid-pseudopapillary-tumor-in-children
#17
Emre Divarcı, Zafer Dökümcü, Nazan Çetingül, Deniz Nart, Funda Yılmaz Barbet, Orkan Ergün, Ahmet Çelik
BACKGROUND/AIMS: Pancreatic solid pseudopapillary tumor (SPT) is a rare neoplasm in children. In this study, we aimed to present our surgical strategy based on minimal resection by enucleation or limited resection in localized pancreatic SPT. MATERIALS AND METHODS: We retrospectively analyzed the medical records of children who underwent surgical resection between October 2011 and September 2016. RESULTS: Five female patients with a median age of 15 years (range, 14-17 years) were operated...
March 23, 2017: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/28336399/synthetic-matrix-of-polyether-polyurethane-as-a-biological-platform-for-pancreatic-regeneration
#18
Luciana Xavier Pereira, Celso Tarso Rodrigues Viana, Laura Alejandra Ariza Orellano, Simone Aparecida de Almeida, Anilton Cesar Vasconcelos, Alfredo de Miranda Goes, Alexander Birbrair, Silvia Passos Andrade, Paula Peixoto Campos
AIMS: Several alternative cellular approaches using biomaterials to host insulin-producing cells derived from stem cells have been developed to overcome the limitations of type 1 diabetes treatment (exogenous insulin injection). However, none seem to fulfill all requirements needed to induce pancreatic cells successful colonization of the scaffolds. Here, we report a polymeric platform adherent to the native mice pancreas filled with human adipose stem cells (hASCs) that was able to induce growth of pancreatic parenchyma...
March 20, 2017: Life Sciences
https://www.readbyqxmd.com/read/28336226/systematic-review-of-the-clinical-significance-of-lymph-node-micrometastases-of-pancreatic-adenocarcinoma-following-surgical-resection
#19
REVIEW
Sae Byeol Choi, Hyung Joon Han, Pyoungjae Park, Wan Bae Kim, Tae-Jin Song, Sang Yong Choi
OBJECTIVES: The aim of this study is to perform a systematic review of the clinical impact of lymph node micrometastasis in pancreatic adenocarcinoma following surgical resection. METHODS: A systematic review was conducted and published literature were searched using "pancreas or pancreatic" and "cancer or carcinoma or neoplasm", and "micrometastasis or micrometastses" in the PubMed, EMBAE, and Web of Science. RESULTS: Thirteen publications with 726 patients and 3701 lymph nodes were included in this systematic review...
March 18, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28335987/community-health-indicators-associated-with-outcomes-of-pancreatectomy
#20
Lauren Slakey Pointer, Zaid Al-Qurayshi, David Taylor Pointer, Emad Kandil, Douglas Philip Slakey
PURPOSE: This study evaluates the association of environmental, social and health risk factors in relation to outcomes of pancreatic surgery. METHODS: Patients who underwent pancreatectomy with a 30 day postoperative follow up in Florida, New York and Washington states were identified using the State Inpatient Databases (SID) from 2010 to 2011. This data was merged with community health indicators complied from the County Health Ranking database. Fourteen community health indicators were used to determine higher risk communities...
March 10, 2017: American Journal of Surgery
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