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https://www.readbyqxmd.com/read/28644956/sirt4-is-a-regulator-of-insulin-secretion
#1
Elma Zaganjor, Sejal Vyas, Marcia C Haigis
In a recent issue of Cell Metabolism, Anderson et al. (2017) report that SIRT4 regulates insulin sensitivity in the pancreas via activation of methylcrotonyl-CoA carboxylase 1 (MCCC1) by removal of dicarboxyacyl-lysine modifications. Thus, SIRT4 activates leucine catabolism and causes decreased secretion of insulin from the pancreas.
June 22, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28643938/oral-application-of-a-periodontal-pathogen-impacts-serpine1-expression-and-pancreatic-islet-architecture-in-prediabetes
#2
V Ilievski, U G Bhat, S Suleiman-Ata, B A Bauer, P T Toth, S T Olson, T G Unterman, K Watanabe
BACKGROUND AND OBJECTIVES: Epidemiological studies suggest a close association between periodontitis and prediabetes/insulin resistance (IR) but whether periodontitis causes prediabetes in humans is not known. Using various animal models, we have recently established that periodontitis can be an initiator of prediabetes, which is characterized by glucose intolerance, hyperinsulinemia and IR. In addition, our in vitro studies indicated that Porphyromonas gingivalis (Pg) induced insulin secretion in MIN6 β cells and this induction was in part SerpinE1 (plasminogen activator inhibitor 1, PAI1) dependent...
June 23, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28643936/phenotypic-analysis-of-organoids-by-proteomics
#3
REVIEW
Alexis Gonneaud, Claude Asselin, François Boudreau, François-Michel Boisvert
The development of 3D cell cultures into self-organizing organ-like structures named organoids provides a model that better reflects in vivo organ physiology and their functional properties. Organoids have been established from several organs, such as the intestine, prostate, brain, liver, kidney and pancreas. With recent advances in high-throughput and -omics profiling technologies, it is now possible to study the mechanisms of cellular organisation at the systems level. It is therefore not surprising that these methods are now used to characterize organoids at the transcriptomic, proteomic, chromatin state and transcription factor DNA-binding levels...
June 23, 2017: Proteomics
https://www.readbyqxmd.com/read/28643569/iron-overload-directly-affecting-the-ovaries-in-a-patient-with-diamond-blackfan-anaemia-a-case-report
#4
Mariano Mascarenhas, Victoria Rawnsley, Adam Balen
Iron is a 'one-way' element and the primary point of regulation of body iron stores is at the level of intestinal iron absorption. Repeated blood transfusions for congenital anaemias bypass this regulatory checkpoint and inevitably lead to iron overload in the long-term. Iron overload causes multi-organ dysfunction of the heart, liver, pancreas and joints. It also causes reproductive toxicity primarily through its damaging effect on the anterior pituitary leading to hypogonadotrophic hypogonadism. Another less understood mechanism of reproductive toxicity is direct gonadal damage of excess free iron...
June 23, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28643455/pathways-governing-development-of-stem-cell-derived-pancreatic-%C3%AE-cells-lessons-from-embryogenesis
#5
Sara Al-Khawaga, Bushra Memon, Alexandra E Butler, Shahrad Taheri, Abdul B Abou-Samra, Essam M Abdelalim
The loss of functional β cells leads to development of diabetes. Several studies have shown that β cells are specified through several stages of progenitors during pancreas development, each stage defined by the expression of specific transcription factors (TFs). Understanding signalling pathways that control the differentiation and specification processes during embryogenesis will facilitate efforts to obtain functional β cells in vitro. Our current knowledge of the mechanisms involved in pancreatic β cell development and survival under normal or diabetic conditions has come largely from animal studies...
June 22, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28643308/-anatomical-strategies-of-henle-trunk-in-laparoscopic-right-hemi-colectomy-for-right-colon-cancer
#6
Bo Feng, Xialin Yan, Sen Zhang, Pei Xue, Zirui He, Minhua Zheng
The advancement of laparoscopic surgery serves as a trigger for better understanding of the vascular structure at the inferior border of the pancreas, especially Henle trunk. Henle trunk was first found as convergence to superior mesenteric vein (SMV) conjoined by sub-right colon vein (SRCV) and right gastroepiploic vein (RGEV), but decades later, anterior superior pancreatic duodenal vein (ASPDV) was described as another conjoint vein of Henle trunk. These tributaries are the basic elements of Henle trunk in early years' study...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28642988/development-of-pulmonary-hypertension-during-treatment-with-diazoxide-a-case-series-and-literature-review
#7
Matthew R Timlin, Alexander B Black, Heather M Delaney, Renée I Matos, Candace S Percival
Congenital hyperinsulinism (CHI) is the most common cause of persistent hypoglycemia in infancy. The mainstay of medical management for CHI is diazoxide. Diazoxide inhibits insulin release from the pancreas, but also causes smooth muscle relaxation and fluid retention so it is typically given with chlorothiazide. In July 2015, the FDA issued a drug safety communication warning that pulmonary hypertension (PH) had been reported in 11 infants being treated with diazoxide and that the PH resolved with withdrawal of diazoxide...
June 22, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28642969/diverse-metabolic-effects-of-o-glcnacylation-in-the-pancreas-but-limited-effects-in-insulin-sensitive-organs-in-mice
#8
Shogo Ida, Katsutaro Morino, Osamu Sekine, Natsuko Ohashi, Shinji Kume, Tokuhiro Chano, Kanako Iwasaki, Norio Harada, Nobuya Inagaki, Satoshi Ugi, Hiroshi Maegawa
AIMS/HYPOTHESIS: O-GlcNAcylation is characterised by the addition of N-acetylglucosamine to various proteins by O-GlcNAc transferase (OGT) and serves in sensing intracellular nutrients by modulating various cellular processes. Although it has been speculated that O-GlcNAcylation is associated with glucose metabolism, its exact role in whole body glucose metabolism has not been fully elucidated. Here, we investigated whether loss of O-GlcNAcylation globally and in specific organs affected glucose metabolism in mammals under physiological conditions...
June 22, 2017: Diabetologia
https://www.readbyqxmd.com/read/28642799/extraoral-taste-receptor-discovery-new-light-on-ayurvedic-pharmacology
#9
REVIEW
Marilena Gilca, Dorin Dragos
More and more research studies are revealing unexpectedly important roles of taste for health and pathogenesis of various diseases. Only recently it has been shown that taste receptors have many extraoral locations (e.g., stomach, intestines, liver, pancreas, respiratory system, heart, brain, kidney, urinary bladder, pancreas, adipose tissue, testis, and ovary), being part of a large diffuse chemosensory system. The functional implications of these taste receptors widely dispersed in various organs or tissues shed a new light on several concepts used in ayurvedic pharmacology (dravyaguna vijnana), such as taste (rasa), postdigestive effect (vipaka), qualities (guna), and energetic nature (virya)...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28641727/metastatic-hepatoid-carcinoma-of-the-pancreas-first-description-of-treatment-with-capecitabine-and-temozolomide
#10
Bruna Pellini Ferreira, Jonathan Vasquez, Allison Carilli
No abstract text is available yet for this article.
June 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28640808/transmembrane-helical-interactions-in-the-cftr-channel-pore
#11
Jhuma Das, Andrei A Aleksandrov, Liying Cui, Lihua He, John R Riordan, Nikolay V Dokholyan
Mutations in the Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) gene affect CFTR protein biogenesis or its function as a chloride channel, resulting in dysregulation of epithelial fluid transport in the lung, pancreas and other organs in cystic fibrosis (CF). Development of pharmaceutical strategies to treat CF requires understanding of the mechanisms underlying channel function. However, incomplete 3D structural information on the unique ABC ion channel, CFTR, hinders elucidation of its functional mechanism and correction of cystic fibrosis causing mutants...
June 22, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28639725/targeting-nad-p-h-quinone-oxidoreductase-nqo1-in-pancreatic-cancer
#12
Anne M Lewis, Matthew Ough, Juan Du, Ming-Sound Tsao, Larry W Oberley, Joseph J Cullen
Quinone oxidoreductase (NQO1) functions as an important part of cellular antioxidant defense by detoxifying quinones, thus preventing the formation of reactive oxygen species. The aims of our study were to determine if NQO1 is elevated in pancreatic cancer specimens and pancreatic cancer cell lines and if so, would compounds previously demonstrated to redox cycle with NQO1 be effective in killing pancreatic cancer cells. Immunohistochemistry of resected pancreatic specimens demonstrated an increased immunoreactivity for NQO1 in pancreatic cancer and pancreatic intraepithelial neoplasia (PanIN) specimens versus normal human pancreas...
July 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28639695/glycogen-synthase-kinase-3%C3%AE-ablation-limits-pancreatitis-induced-acinar-to-ductal-metaplasia
#13
Li Ding, Geou-Yarh Liou, Daniel M Schmitt, Peter Storz, Jin-San Zhang, Daniel D Billadeau
Acinar-to-ductal metaplasia (ADM) is a reversible epithelial trans-differentiation process that occurs in the pancreas in response to acute inflammation. ADM can rapidly progress toward pre-malignant pancreatic intraepithelial neoplasia (PanIN) lesions in the presence of mutant KRas and ultimately pancreatic adenocarcinoma (PDAC). In the present work we elucidate the role and related mechanism of glycogen synthase kinase-3beta (GSK-3β) in ADM development using in vitro 3D cultures and genetically engineered mouse models...
June 22, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28639386/development-of-immune-response-to-tissue-restricted-self-antigens-in-simultaneous-kidney-pancreas-transplant-recipients-with-acute-rejection
#14
Muthukumar Gunasekaran, Neeta Vachharajani, Joseph P Gaut, Thin Thin Maw, Rowena Delos Santos, Surendra Shenoy, William C Chapman, Jason Wellen, Thalachallour Mohanakumar
Simultaneous kidney-pancreas transplantation (SKP Tx) is a treatment for end-stage kidney disease secondary to diabetes mellitus. We investigated the role of immune responses to donor human leukocyte antigens (HLA) and tissue-restricted kidney and pancreas self-antigens (KSAgs and PSAgs, respectively) in SKP Tx recipients (SKP TxRs). Sera collected from 39 SKP TxRs were used to determine de novo Abs specific for KSAgs (collagen-IV, Col-IV; fibronectin, FN) and PSAgs (insulin, islet cells, glutamic acid decarboxylase, and pancreas-associated protein-1) by ELISA...
June 21, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28639239/significant-improvement-in-detecting-braf-kras-and-egfr-mutations-using-next-generation-sequencing-as-compared-with-fda-cleared-kits
#15
Wanlong Ma, Steven Brodie, Sally Agersborg, Vincent A Funari, Maher Albitar
INTRODUCTION: We compared mutations detected in EGFR, KRAS, and BRAF genes using next-generation sequencing (NGS) and confirmed by Sanger sequencing with mutations that could be detected by FDA-cleared testing kits. METHODS: Paraffin-embedded tissue from 822 patients was tested for mutations in EGFR, KRAS, and BRAF by NGS. Sanger sequencing of hot spots was used with locked nucleic acid to increase sensitivity for specific hot-spot mutations. This included 442 (54%) lung cancers, 168 (20%) colorectal cancers, 29 (4%) brain tumors, 33 (4%) melanomas, 14 (2%) thyroid cancers, and 16% others (pancreas, head and neck, and cancer of unknown origin)...
June 21, 2017: Molecular Diagnosis & Therapy
https://www.readbyqxmd.com/read/28638873/protective-effect-of-camel-milk-as-anti-diabetic-supplement-biochemical-molecular-and-immunohistochemical-study
#16
Ahmed A Mansour, Mohammed A Nassan, Osama M Saleh, Mohamed M Soliman
BACKGROUND: Diabetes is a serious disease affects human health. Diabetes in advanced stages is accompanied by general weakness and alteration in fats and carbohydrates metabolism. Recently there are some scientific trends about the usage of camel milk (CM) in the treatment of diabetes and its associated alterations. CM contains vital active particles with insulin like action that cure diabetes and its complications but how these effects occur, still unclear. MATERIALS AND METHODS: Seventy-five adult male rats of the albino type divided into five equal groups...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28638795/potential-prognostic-biomarkers-in-pancreatic-juice-of-resectable-pancreatic-ductal-adenocarcinoma
#17
REVIEW
Shefali Agrawal
Despite potentially curative surgery pancreatic cancer has a dismal prognosis. Serum cancer antigen 19-9 (CA 19-9) correlates with tumor burden, resectability and survival in patients with pancreatic ductal adenocarcinoma. Identification of novel biomarkers may facilitate early diagnosis of pancreatic cancer and improve survival. Pancreatic juice is a rich source of cancer-specific proteins rendering it a promising tool for identifying biomarkers. Recent proteomic and microRNA expression analyses have identified several biomarkers of potential diagnostic and prognostic value...
June 10, 2017: World Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28638261/coincidence-of-polysplenia-kartagener-syndrome-dorsal-pancreas-agenesis-and-polycystic-kidney-disease-in-an-adult
#18
Mustafa Kemal Demir, Yavuz Furuncuoglu
Here we present the case of an adult male patient with the anomalies of polysplenia, Kartagener syndrome, dorsal pancreas agenesis, and adult polycystic kidney disease. Familiarity with this extremely rare coincidence may improve diagnostic accuracy and patient management.
June 2017: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28638247/is-sutureless-pancreaticogastrostomy-more-effective-than-single-layer-duct-to-mucosa-pancreaticojejunostomy-in-pancreaticoduodenectomy
#19
Daniel Kostov, Georgi Kobakov
OBJECTIVE: The present study aimed to assess the safety of pancreatic anastomosis after pancreaticoduodenectomy (PD) and to compare the results of sutureless pancreatogastrostomy (PG) with those of single-layer duct-to-mucosa pancreatojejunostomy (PJ) after PD in patients with malignant disease of the pancreatic head and of the periampullary region. MATERIALS AND METHODS: The study included 173 consecutive patients undergoing PD from May 2009 to December 2015 at a single surgical center...
June 2017: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28638231/pleiotrophin-and-n-syndecan-promote-perineural-invasion-and-tumor-progression-in-an-orthotopic-mouse-model-of-pancreatic-cancer
#20
Jun Yao, Lu-Lin Zhang, Xu-Mei Huang, Wen-Yao Li, She-Gan Gao
AIM: To detect the expression of pleiotrophin (PTN) and N-syndecan in pancreatic cancer and analyze their association with tumor progression and perineural invasion (PNI). METHODS: An orthotopic mouse model of pancreatic cancer was created by injecting tumor cells subcapsularly in a root region of the pancreas beneath the spleen. Pancreatic cancer tissues were taken from 36 mice that survived for more than 90 d. PTN and N-syndecan proteins were detected by immunohistochemistry and analyzed for their correlation with pathological features, PNI, and prognosis...
June 7, 2017: World Journal of Gastroenterology: WJG
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