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https://www.readbyqxmd.com/read/29678923/eje-prize-2018-a-gut-feeling-about-glucagon
#1
Filip Krag Knop
Hyperglucagonaemia (in the fasting as well as in the postprandial state) is considered a core pathophysiological component of diabetes and to contribute substantially to the hyperglycaemic state of diabetes. Hyperglucagonaemia is usually viewed upon as a consequence of pancreatic alpha cell insensitivity to the glucagon-suppressive effects of glucose and insulin. Since we observed that the well-known hyperglucagonaemic response to oral glucose in patients with type 2 diabetes is exchanged by normal suppression of plasma glucagon levels following isoglycaemic intravenous glucose administration in these patients, we have been focusing on the gut and gut-derived factors as potential mediators of diabetic hyperglucagonaemia...
April 20, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29678717/a-tandem-mass-tag-tmt-proteomic-analysis-during-the-early-phase-of-experimental-pancreatitis-reveals-new-insights-in-the-disease-pathogenesis
#2
Violeta García-Hernández, Carmen Sánchez-Bernal, Domitille Schvartz, José J Calvo, Jean-Charles Sanchez, Jesús Sánchez-Yagüe
Changes in the protein expression occurring within the initiation phase of acute pancreatitis (AP) might be vital in the development of this complex disease. However, the exact mechanisms involved in the onset of AP remains elusive and most of our knowledge about the pathobiology of AP comes from animal models. We performed in a rat pancreatitic model a high-throughput shotgun proteomic profiling of the soluble and whole membrane fractions from the pancreas during the early phase of cerulein (Cer)-induced AP...
April 17, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29675938/value-of-additional-endoscopic-ultrasonography-for-surveillance-after-surgical-removal-of-intraductal-papillary-mucinous-neoplasms
#3
Ken Kamata, Mamoru Takenaka, Kosuke Minaga, Shunsuke Omoto, Takeshi Miyata, Kentaro Yamao, Hajime Imai, Atsushi Nakai, Hidekazu Tanaka, Yasutaka Chiba, Tomohiro Watanabe, Toshiharu Sakurai, Naoshi Nishida, Takaaki Chikugo, Ippei Matsumoto, Yoshifumi Takeyama, Masayuki Kitano, Masatoshi Kudo
BACKGROUND AND AIMS: This study evaluated the utility of endoscopic ultrasonography (EUS), combined with contrast-enhanced harmonic EUS (CH-EUS), for surveillance of the remnant pancreas after surgery for intraductal papillary mucinous neoplasm (IPMN). METHODS: This was a single-center, retrospective, descriptive study. A total of 134 consecutive patients who underwent surgical resection for IPMN between April 2009 and March 2015 were evaluated. The rates of recurrence and development of IPMN-concomitant pancreatic ductal adenocarcinoma (PDAC) during follow-up were assessed...
April 19, 2018: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/29675567/human-urine-derived-stem-cells-play-a-novel-role-in-the-treatment-of-stz-induced-diabetic-mice
#4
Tianxue Zhao, Deng Luo, Yun Sun, Xin Niu, Yang Wang, Chen Wang, Weiping Jia
Human urine-derived stem cells (hUSCs) are a potential stem cell source for cell therapy. However, the effect of hUSCs on glucose metabolism regulation in type 1 diabetes was not clear. Therefore, the aim of the study was to evaluate whether hUSCs have protective effect on streptozotocin (STZ)-induced diabetes. hUSCs were extracted and cultivated with a special culture medium. Flow cytometry analysis was applied to detect cell surface markers. BALB/c male nude mice were either injected with high-dose STZ (HD-STZ) or multiple low-dose STZ (MLD-STZ)...
April 19, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29675407/pancreatic-aquaporin-7-a-novel-target-for-anti-diabetic-drugs
#5
REVIEW
Leire Méndez-Giménez, Silvia Ezquerro, Inês V da Silva, Graça Soveral, Gema Frühbeck, Amaia Rodríguez
Aquaporins comprise a family of 13 members of water channels (AQP0-12) that facilitate a rapid transport of water across cell membranes. In some cases, these pores are also permeated by small solutes, particularly glycerol, urea or nitric oxide, among other solutes. Several aquaporins have been identified in the pancreas, an exocrine and endocrine organ that plays an essential role in the onset of insulin resistance and type 2 diabetes. The exocrine pancreas, which accounts for 90% of the total pancreas, secretes daily large volumes of a near-isotonic fluid containing digestive enzymes into the duodenum...
2018: Frontiers in Chemistry
https://www.readbyqxmd.com/read/29675033/identification-and-validation-of-a-diagnostic-and-prognostic-multi-gene-biomarker-panel-for-pancreatic-ductal-adenocarcinoma
#6
Hagen Klett, Hannah Fuellgraf, Ella Levit-Zerdoun, Saskia Hussung, Silke Kowar, Simon Küsters, Peter Bronsert, Martin Werner, Uwe Wittel, Ralph Fritsch, Hauke Busch, Melanie Boerries
Late diagnosis and systemic dissemination essentially contribute to the invariably poor prognosis of pancreatic ductal adenocarcinoma (PDAC). Therefore, the development of diagnostic biomarkers for PDAC are urgently needed to improve patient stratification and outcome in the clinic. By studying the transcriptomes of independent PDAC patient cohorts of tumor and non-tumor tissues, we identified 81 robustly regulated genes, through a novel, generally applicable meta-analysis. Using consensus clustering on co-expression values revealed four distinct clusters with genes originating from exocrine/endocrine pancreas, stromal and tumor cells...
2018: Frontiers in Genetics
https://www.readbyqxmd.com/read/29673130/effects-of-gip-on-regional-blood-flow-during-normoglycemia-and-hyperglycemia-in-anesthetized-rats
#7
Xiang Gao, Andreas Lindqvist, Monica Sandberg, Leif Groop, Nils Wierup, Leif Jansson
The incretin hormone glucose-dependent insulinotropic polypeptide (GIP) potentiates glucose-stimulated insulin secretion, and affects β-cell turnover. This study aimed at evaluating if some of the beneficial effects of GIP on glucose homeostasis can be explained by modulation of islet blood flow. Anesthetized Sprague-Dawley rats were infused intravenously with different doses of GIP (10, 20, or 60 ng/kg*min) for 30 min. Subsequent organ blood flow measurements were performed with microspheres. In separate animals, islets were perfused ex vivo with GIP (10-6 -10-12  mol/L) during normo- and hyperglycemia and arteriolar responsiveness was recorded...
April 2018: Physiological Reports
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
#8
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/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/29671418/the-role-of-k-atp-channels-in-cerebral-ischemic-stroke-and-diabetes
#10
REVIEW
Vivian Szeto, Nai-Hong Chen, Hong-Shuo Sun, Zhong-Ping Feng
ATP-sensitive potassium (KATP ) channels are ubiquitously expressed on the plasma membrane of cells in multiple organs, including the heart, pancreas and brain. KATP channels play important roles in controlling and regulating cellular functions in response to metabolic state, which are inhibited by ATP and activated by Mg-ADP, allowing the cell to couple cellular metabolic state (ATP/ADP ratio) to electrical activity of the cell membrane. KATP channels mediate insulin secretion in pancreatic islet beta cells, and controlling vascular tone...
April 19, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29670799/a-modified-technique-for-laparoscopic-spleen-preserving-distal-pancreatectomy
#11
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/29670173/overexpression-of-her2-in-the-pancreas-promotes-development-of-intraductal-papillary-mucinous-neoplasms-in-mice
#12
Wataru Shibata, Hiroto Kinoshita, Yohko Hikiba, Takeshi Sato, Yasuaki Ishii, Soichiro Sue, Makoto Sugimori, Nobumi Suzuki, Kosuke Sakitani, Hideaki Ijichi, Ryutaro Mori, Itaru Endo, Shin Maeda
Pancreatic ductal adenocarcinoma (PDA) has a 5-year survival rate of less than 5% and is the sixth leading cause of cancer death. Although KRAS mutations are one of the major driver mutations in PDA, KRAS mutation alone is not sufficient to induce invasive pancreatic cancer in mice model. HER2, also known as ERBB2, is a receptor tyrosine kinase, and overexpression of HER2 is associated with poor clinical outcomes in pancreatic cancer. However, no report has shown whether HER2 and its downstream signaling contributes to the pancreatic cancer development...
April 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29669939/cystic-fibrosis-related-diabetes-is-caused-by-islet-loss-and-inflammation
#13
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/29669500/%C3%AE-cell-regenerative-potential-of-selected-herbal-extracts-in-alloxan-induced-diabetic-rats
#14
Anoja Priyadarshani Attanayake, Kamani Ayoma Perera Wijewardana Jayatilaka, Lakmini Kumari Boralugoda Mudduwa, Chitra Pathirana
Effective β-cell regeneration is a recognized therapeutic strategy in the treatment of type 1 diabetes mellitus. Regeneration of β-cells could be achieved via exogenous natural sources as medicinal plant extracts. Medicinal plants selected for the investigation were Spondias pinnata (Linn. f.) Kurz, Coccinia grandis (L.) Voigt and Gmelina arborea Roxb. The objective was to determine the β-cell regenerative potential of these plant extracts in alloxan induced diabetic rats. Alloxan monohydrate was used to induce diabetes (150 mg/kg, ip)...
April 18, 2018: Current Drug Discovery Technologies
https://www.readbyqxmd.com/read/29668669/pancreatic-neuroendocrine-neoplasms-a-role-of-laparoscopy-in-surgical-treatment-review
#15
Jacek Szeliga, Marek Jackowski
Pancreatic neuroendocrine neoplasms (PNENs) are extremely rare neoplasms of the pancreas. They originate from pancreatic islet cells, and from the very beginning, cancer cells may or may not show hormone hypersecretion. Currently, surgical treatment is the only therapeutic method that significantly prolongs life expectancy, and in such cases it is a method of choice. In the paper, a review of literature based on the Medline database and including mainly the period of 2013 to 2017 was performed. In each case an operating surgeon is responsible for selection of a method used for surgical treatment...
April 17, 2018: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/29668413/pancreatic-adenocarcinoma-staging-in-the-era-of-preoperative-chemotherapy-and-radiation-therapy
#16
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/29666544/efficiency-of-selected-food-ingredients-on-protein-efficiency-ratio-glycemic-index-and-in-vitro-digestive-properties
#17
M B Anusha, Naveen Shivanna, G Phani Kumar, K R Anilakumar
The human body on exposure to high-altitude, undergoes many physiological challenges. The cardiopulmonary reserves are favoured against the digestive system. Hence, the efficiency of digestion is compromised to a great extent, which leads to anorexia, hypophagia, epigastralgia, dyspepsia, nausea, and peptic ulcers. The present study was focused on in vitro digestive influence of selected food ingredients viz. cardamom, carom, cumin, coriander, fennel, fenugreek, ginger, pepper, star anise, turmeric, papaya, orange, pineapple, liquorice, valerian, and tarragon on the activities of digestive enzymes of rat pancreas, duodenum, and small intestine...
May 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29665210/endoscopic-ultrasound-diagnosis-of-merkel-cell-carcinoma-metastasizing-to-pancreas
#18
Juliana Pinho, Diana Montezuma, Paula Monteiro, Mário Dinis-Ribeiro, Pedro Bastos
Merkel cell carcinoma (MCC) is a rare and aggressive primary neuroendocrine tumor of the skin, with a high propensity for local, regional and distant spread1 . However, distant metastasis of MCC to the pancreas are rarely seen. EUS-FNA is an effective tool in the evaluation and differential diagnosis of pancreatic mass lesions3 . Differentiating metastatic pancreatic tumors, especially Merkel cell carcinoma, from primary pancreatic tumor will influence clinical management and therapeutic strategies2 . This article is protected by copyright...
April 17, 2018: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/29665055/s6k1-controls-epigenetic-plasticity-for-the-expression-of-pancreatic-%C3%AE-%C3%AE-cell-marker-genes
#19
Sang Ah Yi, Jieun Lee, Jong Woo Park, Jihoon Han, Min Gyu Lee, Ki Hong Nam, Jee Hun Park, Hwamok Oh, Sung Jin Ahn, Saetbyul Kim, So Hee Kwon, Dong-Gyu Jo, Jeung-Whan Han
The failure of insulin production by pancreatic β cells is a common hallmark of type 1 diabetes mellitus (T1DM). Because administration of exogenous insulin is associated with diabetes-derived complications, endogenous α to β cell transition can be an attractive alternative. Although decreased β cell size and hypoinsulinaemia have been observed in S6K1-deficient mice, the molecular mechanism underlying the involvement of S6K1 in the transcriptional regulation of insulin remains elusive. Here, we show that the hypoinsulinaemic phenotype of S6K1-deficient mice stems from the dysregulated transcription of a set of genes required for insulin and glucagon production...
April 17, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29664337/pancreatic-stiffness-quantified-with-mr-elastography-relationship-to-postoperative-pancreatic-fistula-after-pancreaticoenteric-anastomosis
#20
Yu Shi, Ying Liu, Feng Gao, Yanqing Liu, Shengzhen Tao, Yue Li, Kevin J Glaser, Richard L Ehman, Qiyong Guo
Purpose To describe the relationship between conventional magnetic resonance (MR) imaging parameters and MR elastography of the pancreas in association with pancreatic histologic features and occurrence of postoperative pancreatic fistula (POPF). Materials and Methods Patients who underwent preoperative MR imaging (MR elastography and diffusion-, T1-, and T2-weighted imaging) followed by pancreatectomy with pancreaticoenteric anastomosis were included. The relationships between preoperative MR imaging parameters, demographic data, and intraoperative factors with POPF risk were analyzed with logistic regression analyses...
April 17, 2018: Radiology
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