56 research outputs found

    Effective and safe proton pump inhibitor therapy in acid-related diseases – A position paper addressing benefits and potential harms of acid suppression

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    THE CONCISE GUIDE TO PHARMACOLOGY 2017/18: Overview.

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    The Concise Guide to PHARMACOLOGY 2017/18 is the third in this series of biennial publications. This version provides concise overviews of the key properties of nearly 1800 human drug targets with an emphasis on selective pharmacology (where available), plus links to an open access knowledgebase of drug targets and their ligands (www.guidetopharmacology.org), which provides more detailed views of target and ligand properties. Although the Concise Guide represents approximately 400 pages, the material presented is substantially reduced compared to information and links presented on the website. It provides a permanent, citable, point-in-time record that will survive database updates. The full contents of this section can be found at http://onlinelibrary.wiley.com/doi/10.1111/bph.13882/full. In addition to this overview, in which are identified 'Other protein targets' which fall outside of the subsequent categorisation, there are eight areas of focus: G protein-coupled receptors, ligand-gated ion channels, voltage-gated ion channels, other ion channels, nuclear hormone receptors, catalytic receptors, enzymes and transporters. These are presented with nomenclature guidance and summary information on the best available pharmacological tools, alongside key references and suggestions for further reading. The landscape format of the Concise Guide is designed to facilitate comparison of related targets from material contemporary to mid-2017, and supersedes data presented in the 2015/16 and 2013/14 Concise Guides and previous Guides to Receptors and Channels. It is produced in close conjunction with the Nomenclature Committee of the Union of Basic and Clinical Pharmacology (NC-IUPHAR), therefore, providing official IUPHAR classification and nomenclature for human drug targets, where appropriate

    Carcinoids of the stomach and the duodenum with atrophic gastritis in a patient with

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    Background: A 27-year-old Caucasian male presented in 1977 with heartburn, indigestion and intermittent diarrhea. Treatment with cimetidine, ranitidine, and famotidine resulted in partial improvement, however, his symptoms persisted. Five years later, the patient underwent a parathyroid adenoma resection after hypercalcemia secondary to hyperparathyroidism.In 1986, multiple ulcers were found during an osophagogastroduodenoscopy (EGD), performed due to persistent epigastric discomfort. Two years later, he was diagnosed with Zollinger–Ellison syndrome (ZES) and MEN I Syndrome , however, despite treatment with famotidine, his symptoms persisted. In 1991, antisecretory treatment with the proton pump inhibitor, omeprazole, reduced the patient\'s basal acid output from 3–4 mEq/hr to 0.02–0.08 mEq/hr. In 1994, an EGD revealed multiple duodenal submucosal nodules. In 1997, treatment was switched to lansoprazole. The following year, a mucosal biopsy revealed atrophic gastric mucosa and multiple friable polyps with overlying ulcerations.Multifocal tumors were observed in the setting of endocrine cell hyperplasia and atrophic gastritis. Investigations:CT scan,MRI, somatostatin receptor scintigraphy, EGD, endoscopic ultrasonography and gastric analysis. Diagnosis: Carcinoids of the stomach and duodenum with atrophic gastritis and ZES accompanied by MEN I syndrome. Management:Histamine 2-receptor antagonists (cimetidine, ranitidine and famotidine) followed by proton pump inhibitor therapy (omeprazole, lansoprazole, and intravenous and oral pantoprazole). South African Gastroenterology Journal Vol. 6 (2) 2008: pp. 9-1

    Autoimmune atrophic gastritis: current perspectives

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    Artem Minalyan,1 Jihane N Benhammou,1 Aida Artashesyan,1 Michael S Lewis,2 Joseph R Pisegna1 1Division of Gastroenterology, Hepatology and Parenteral Nutrition, 2Department of Pathology and Laboratory Medicine, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA Abstract: At present there is no universally accepted classification for gastritis. The first successful classification (The Sydney System) that is still commonly used by medical professionals was first introduced by Misiewicz et al in Sydney in 1990. In fact, it was the first detailed classification after the discovery of Helicobacter pylori by Warren and Marshall in 1982. In 1994, the Updated Sydney System was proposed during the International Workshop on the Histopathology of Gastritis followed by the publication in The American Journal of Surgical Pathology by Dixon et al. Using the new classification, distinction between atrophic and nonatrophic gastritis was revised, and the visual scale grading was incorporated. According to the Updated Sydney System Classification, atrophic gastritis is categorized into multifocal (H. pylori, environmental factors, specific diet) and corpus-predominant (autoimmune). Since metaplasia is a key histological characteristic in patients with atrophic gastritis, it has been recommended to use the word “metaplastic” in both variants of atrophic gastritis: autoimmune metaplastic atrophic gastritis (AMAG) and environmental metaplastic atrophic gastritis. Although there are many overlaps in the course of the disease and distinction between those two entities may be challenging, the aim of this review article was to describe the etiology, epidemiology, pathogenesis, diagnosis, clinical manifestations and treatment in patients with AMAG. However, it is important to mention that H. pylori is the most common etiologic factor for the development of gastritis in the world. Keywords: autoimmune gastritis, pernicious anemia, gastric carcinoi

    Regulation of Appetite, Body Composition, and Metabolic Hormones by Vasoactive Intestinal Polypeptide (VIP)

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    © 2015, Springer Science+Business Media New York (outside the USA). Vasoactive intestinal peptide (VIP) is a 28-amino acid neuropeptide that belongs to the secretin-glucagon superfamily of peptides and has 68 % homology with PACAP. VIP is abundantly expressed in the central and peripheral nervous system and in the gastrointestinal tract, where it exercises several physiological functions. Previously, it has been reported that VIP regulates feeding behavior centrally in different species of vertebrates such as goldfishes, chicken and rodents. Additional studies are necessary to analyze the role of endogenous VIP on the regulation of appetite/satiety, feeding behavior, metabolic hormones, body mass composition and energy balance. The aim of the study was to elucidate the physiological pathways by which VIP regulates appetite/satiety, feeding behavior, metabolic hormones, and body mass composition. VIP deficient (VIP −/−) and age-matched wild-type (WT) littermates were weekly monitored from 5 to 22 weeks of age using a whole body composition EchoMRI analyzer. Food intake and feeding behavior were analyzed using the BioDAQ automated monitoring system. Plasma levels of metabolic hormones including active-ghrelin, GLP-1, leptin, PYY, pancreatic polypeptide (PP), adiponectin, and insulin were measured in fasting as well as in postprandial conditions. The genetic lack of VIP led to a significant reduction of body weight and fat mass and to an increase of lean mass as the mice aged. Additionally, VIP−/− mice had a disrupted pattern of circadian feeding behavior resulting in an abolished regular nocturnal/diurnal feeding. These changes were associated with an altered secretion of adiponectin, GLP-1, leptin, PYY and insulin in VIP−/− mice. Our data demonstrates that endogenous VIP is involved in the control of appetite/satiety, feeding behavior, body mass composition and in the secretion of six different key regulatory metabolic hormones. VIP plays a key role in the regulation of body phenotype by significantly enhancing body weight and fat mass accumulation. Therefore, VIP signaling is critical for the modulation of appetite/satiety and body mass phenotype and is a potential target for future treatment of obesity
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