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https://www.readbyqxmd.com/read/28346595/association-of-gastric-acid-suppression-with-recurrent-clostridium-difficile-infection-a-systematic-review-and-meta-analysis
#1
Raseen Tariq, Siddharth Singh, Arjun Gupta, Darrell S Pardi, Sahil Khanna
Importance: Gastric acid suppression has been associated with an increased risk of primary Clostridium difficile infection (CDI), but the risk of recurrent CDI in patients taking gastric acid suppressant medications is unclear. Objective: To perform a systematic review and meta-analysis to evaluate the association between gastric acid suppressants and recurrent CDI. Data Sources: MEDLINE, EMBASE, the Cochrane Central Register, the Cochrane Database, and Web of Science were searched from January 1, 1995, to September 30, 2015, for studies assessing the association between gastric acid suppressant exposure and recurrent CDI...
March 27, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28344921/german-guideline-for-the-management-of-adverse-reactions-to-ingested-histamine-guideline-of-the-german-society-for-allergology-and-clinical-immunology-dgaki-the-german-society-for-pediatric-allergology-and-environmental-medicine-gpa-the-german-association-of
#2
Imke Reese, Barbara Ballmer-Weber, Kirsten Beyer, Thomas Fuchs, Jörg Kleine-Tebbe, Ludger Klimek, Ute Lepp, Bodo Niggemann, Joachim Saloga, Christiane Schäfer, Thomas Werfel, Torsten Zuberbier, Margitta Worm
Adverse food reactions are far more often perceived than objectively verified. In our scientific knowledge on non-allergic adverse reactions including the so called histamine intolerance, there are large deficits. Due to the fact that this disorder is increasingly discussed in the media and the internet, more and more people suspect it to be the trigger of their symptoms. The scientific evidence to support the postulated link between ingestion of histamine and adverse reactions is limited, and a reliable laboratory test for objective diagnosis is lacking...
2017: Allergo Journal International
https://www.readbyqxmd.com/read/28344594/articular-inflammation-induced-by-an-enzymatically-inactive-lys49-phospholipase-a2-activation-of-endogenous-phospholipases-contributes-to-the-pronociceptive-effect
#3
Renata Gonçalves Dias, Sandra Coccuzzo Sampaio, Morena Brazil Sant'Anna, Fernando Queiroz Cunha, José María Gutiérrez, Bruno Lomonte, Yara Cury, Gisele Picolo
BACKGROUND: Arthritis is a set of inflammatory conditions that induce aching, stiffness, swelling, pain and may cause functional disability with severe consequences to the patient's lives. These are multi-mediated pathologies that cannot be effectively protected and/or treated. Therefore, the aim of this study was to establish a new model of acute arthritis, using a Lys49-PLA2 (Bothrops asper myotoxin II; MT-II) to induce articular inflammation. METHODS: The articular inflammation was induced by MT-II (10 μg/joint) injection into the left tibio-tarsal or femoral-tibial-patellar joints...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28344131/specific-patterns-of-spinal-metabolites-underlying-%C3%AE-me-5-ht-evoked-pruritus-compared-with-histamine-and-capsaicin-assessed-by-proton-nuclear-magnetic-resonance-spectroscopy
#4
Taotao Liu, Zhigang He, Xuebi Tian, Ghulam Mustafa Kamal, Zhixiao Li, Zeyuan Liu, Huili Liu, Fuqiang Xu, Jie Wang, Hongbing Xiang
The mechanism behind itching is not well understood. Proton nuclear magnetic resonance ((1)H-NMR) spectroscopic analysis of spinal cord extracts provides a quick modality for evaluating the specific metabolic activity of α-Me-5-HT-evoked pruritus mice. In the current study, four groups of young adult male C57Bl/6 mice were investigated; one group treated with saline, while the other groups intradermally injected with α-Me-5-HT (histamine independent pruritogen), histamine (histamine dependent pruritogen) and capsaicin (algogenic substance), respectively...
March 23, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28342907/active-placebo-control-groups-of-pharmacological-interventions-were-rarely-used-but-merited-serious-consideration-a-methodological-overview
#5
Jakob Solgaard Jensen, Andreas Ørsted Bielefeldt, Asbjørn Hróbjartsson
OBJECTIVES: Active placebos are control interventions that mimic the side-effects of the experimental interventions in randomised trials and are sometimes used to reduce the risk of unblinding. We wanted to assess how often randomised clinical drug trials implement active placebo control groups; to provide a catalogue, and a characterisation, of such trials; and to analyse methodological arguments for and against use of active placebo. STUDY DESIGN: An overview consisting of three thematically linked sub-studies...
March 22, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28342109/sensitivity-to-enterocins-of-biogenic-amine-producing-faecal-enterococci-from-ostriches-and-pheasants
#6
Andrea Lauková, Anna Kandričáková, Leona Buňková, Pavel Pleva, Jana Ščerbová
Enterococci are widespread bacteria forming the third largest genus among lactic acid bacteria. Some possess probiotic properties or they can produce beneficial proteinaceous antimicrobial substances called enterocins. On the other hand, some enterococci produce biogenic amines (BAs), so this study is focused on the sensitivity to enterocins of biogenic amine-producing faecal enterococci from ostriches and pheasants. Altogether, 60 enterococci isolated from faeces of ostriches and pheasants were tested for production of BAs...
March 24, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28340169/histamine-receptors-in-the-cross-talk-between-periphery-and-brain
#7
Maria Lindskog
No abstract text is available yet for this article.
March 15, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28339575/histaminergic-neurotransmission-as-a-gateway-for-the-cognitive-effect-of-oleoylethanolamide-in-contextual-fear-conditioning
#8
Gustavo Provensi, Roberta Fabbri, Leonardo Munari, Alessia Costa, Elisabetta Baldi, Corrado Bucherelli, Patrizio Blandina, Maria Beatrice Passani
Background: The integrity of the brain histaminergic system is necessary for the unfolding of homeostatic and cognitive processes through the recruitment of alternative circuits with distinct temporal patterns. We recently demonstrated that the fat-sensing lipid mediator oleoylethanolamide indirectly activates histaminergic neurons to exerts its hypophagic effects. The present experiments investigated whether histaminergic neurotransmission is necessary also for the modulation of emotional memory induced by oleoylethanolamide in a contextual fear conditioning paradigm...
January 19, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28339554/efficacy-and-safety-of-antazoline-in-the-rapid-cardioversion-of-paroxysmal-atrial-fibrillation-the-anpaf-study
#9
Aleksander Maciag, Michal M Farkowski, Tomasz Chwyczko, Maciej Beckowski, Pawel Syska, Ilona Kowalik, Mariusz Pytkowski, Jacek Wozniak, Rafal Dabrowski, Hanna Szwed
Aims: The aim of the study was to assess the clinical efficacy of antazoline, a first-generation anti-histaminic agent, in the rapid conversion of paroxysmal non-valvular atrial fibrillation (AF) to sinus rhythm in patients without heart failure. Methods and results: This study was a single center, randomized, double blind, placebo-controlled, superiority clinical trial. We enrolled patients with an AF episode lasting less than 43 h, in stable cardiopulmonary condition...
December 22, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28336400/mechanistic-characterization-of-s-38093-a-novel-inverse-agonist-at-histamine-h3-receptors
#10
Aurore Sors, Fany Panayi, Lionel Bert, Dominique Favale, Olivier Nosjean, Valérie Audinot, Jean-Michel Arrang, Bruno Buisson, Esther Steidl, Jean-Marie Delbos, Tuulia Huhtala, Outi Kontkanen, Anne-Marie Chollet, Patrick Casara, Pierre Lestage
Histaminergic H3 inverse agonists, by stimulating central histamine release, represent attractive drug candidates to treat cognitive disorders. The present studies aimed to describe the mechanistic profile of S 38093 a novel H3 receptors inverse agonist. S 38093 displays a moderate affinity for rat, mouse and human H3 receptors (Ki = 8.8, 1.44 and 1.2µM, respectively) with no affinity for other histaminergic receptors. In cellular models, the compound was able to antagonize mice H3 receptors (KB = 0.65µM) and to suppress cAMP decrease induced by an H3 agonist via human H3 receptors (KB = 0...
March 20, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28335573/ultratrace-detection-of-histamine-using-a-molecularly-imprinted-polymer-based-voltammetric-sensor
#11
Maedeh Akhoundian, Axel Rüter, Sudhirkumar Shinde
Rapid and cost-effective analysis of histamine, in food, environmental, and diagnostics research has been of interest recently. However, for certain applications, the already-existing biological receptor-based sensing methods have usage limits in terms of stability and costs. As a result, robust and cost-effective imprinted polymeric receptors can be the best alternative. In the present work, molecularly-imprinted polymers (MIPs) for histamine were synthesized using methacrylic acid in chloroform and acetonitrile as two different porogens...
March 21, 2017: Sensors
https://www.readbyqxmd.com/read/28332208/itchy-channels-and-where-to-find-them
#12
Nikita Gamper
Itch (pruritus) is an unpleasant sensory experience that triggers a desire to scratch. It is induced by activation of a subset of cutaneous C fibers in response to environmental irritants and some endogenous mediators (such as histamine) This article is protected by copyright. All rights reserved.
March 23, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28332048/histamine-release-from-mast-cells-and-basophils
#13
Francesco Borriello, Raffaella Iannone, Gianni Marone
Mast cells and basophils represent the most relevant source of histamine in the immune system. Histamine is stored in cytoplasmic granules along with other amines (e.g., serotonin), proteases, proteoglycans, cytokines/chemokines, and angiogenic factors and rapidly released upon triggering with a variety of stimuli. Moreover, mast cell and basophil histamine release is regulated by several activating and inhibitory receptors. The engagement of different receptors can trigger different modalities of histamine release and degranulation...
March 23, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28331524/the-effect-of-tong-xie-yao-fang-on-intestinal-mucosal-mast-cells-in-postinfectious-irritable-bowel-syndrome-rats
#14
Xiangxue Ma, Xiaoge Wang, Nan Kang, Ting Chen, Haijie Ji, Lin Lv, Xiaolan Yin, Yaxin Tian, Rui Zheng, Yuanzhi Duan, Fengyun Wang, Xudong Tang
Objective. To investigate the effects of Tong-Xie-Yao-Fang (TXYF) on intestinal mucosal mast cells in rats with postinfectious irritable bowel syndrome (PI-IBS). Design. PI-IBS rat models were established using a multistimulation paradigm. Then, rats were treated with TXYF intragastrically at doses of 2.5, 5.0, and 10.0 g·kg(-1)·d(-1) for 14 days, respectively. Intestinal sensitivity was assessed based on abdominal withdrawal reflex (AWR) scores and fecal water content (FWC). Mast cell counts and the immunofluorescence of tryptase and c-Fos in intestinal mucosa were measured; and serum IL-1β, TNF-α, and histamine levels were determined...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28328081/btk-inhibition-is-a-potent-approach-to-block-ige-mediated-histamine-release-in-human-basophils
#15
Dubravka Smiljkovic, Katharina Blatt, Gabriele Stefanzl, Yulia Dorofeeva, Cathrin Skrabs, Margarete Focke-Tejkl, Wolfgang R Sperr, Ulrich Jaeger, Rudolf Valenta, Peter Valent
BACKGROUND: Recent data suggest that Bruton's tyrosine kinase (BTK) is an emerging therapeutic target in IgE receptor (IgER) cross-linked basophils. METHODS: We examined the effects of four BTK inhibitors (ibrutinib, dasatinib, AVL-292, CNX-774) on IgE-dependent activation and histamine release in blood basophils obtained from allergic patients (n=11) and non-allergic donors (n=5). In addition, we examined the effects of these drugs on the growth of the human basophil cell line KU812 and the human mast cell line HMC-1...
March 22, 2017: Allergy
https://www.readbyqxmd.com/read/28324649/sulfonamides-as-selective-nav1-7-inhibitors-optimizing-potency-pharmacokinetics-and-metabolic-properties-to-obtain-atropisomeric-quinolinone-am-0466-that-affords-robust-in-vivo-activity
#16
Russell F Graceffa, Alessandro A Boezio, Jessica Able, Steven Altmann, Loren M Berry, Christiane M Boezio, John R Butler, Margaret Y Chu-Moyer, Melanie Cooke, Erin F DiMauro, Thomas A Dineen, Elma Feric Bojic, Robert S Foti, Robert T Fremeau, Angel Guzman-Perez, Hua Gao, Hakan Gunaydin, Hongbing Huang, Liyue Huang, Christopher Ilch, Michael Jarosh, Thomas Kornecook, Charles R Kreiman, Daniel S La, Joseph Ligutti, Benjamin Charles Milgram, Min-Hwa Jasmine Lin, Isaac E Marx, Hanh Nho Nguyen, Emily A Peterson, Gwen Rescourio, John Roberts, Laurie B Schenkel, Roman Shimanovich, Brian Andrew Sparling, John Stellwagen, Kristin Taborn, Karina R Vaida, Jean Wang, John T S Yeoman, Violeta L Yu, Dawn Zhu, Bryan D Moyer, Matthew M Weiss
Due to its strong genetic validation, NaV1.7 has attracted significant interest as a target for the treatment of pain. We have previously reported on a number of structurally distinct bicyclic heteroarylsulfonamides as NaV1.7 inhibitors that demonstrate high levels of selectivity over other NaV isoforms. Herein, we report the discovery and optimization of a novel series of atropisomeric quinolinone sulfonamide inhibitors of NaV1.7, which demonstrate nanomolar inhibition of NaV1.7 and exhibit high levels of selectivity over other sodium channel isoforms...
March 21, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28322750/supradural-inflammatory-soup-in-awake-and-freely-moving-rats-induces-facial-allodynia-that-is-blocked-by-putative-immune-modulators
#17
Julie Wieseler, Amanda Ellis, Andrew McFadden, Kendra Stone, Kimberley Brown, Sara Cady, Leandro F Bastos, David Sprunger, Niloofar Rezvani, Kirk Johnson, Kenner C Rice, Steven F Maier, Linda R Watkins
Facial allodynia is a migraine symptom that is generally considered to represent a pivotal point in migraine progression. Treatment before development of facial allodynia tends to be more successful than treatment afterwards. As such, understanding the underlying mechanisms of facial allodynia may lead to a better understanding of the mechanisms underlying migraine. Migraine facial allodynia is modeled by applying inflammatory soup (histamine, bradykinin, serotonin, prostaglandin E2) over the dura. Whether glial and/or immune activation contributes to such pain is unknown...
March 16, 2017: Brain Research
https://www.readbyqxmd.com/read/28321840/association-of-proton-pump-inhibitors-usage-with-risk-of-pneumonia-in-dementia-patients
#18
Sai-Wai Ho, Ying-Hock Teng, Shun-Fa Yang, Han-Wei Yeh, Yu-Hsun Wang, Ming-Chih Chou, Chao-Bin Yeh
OBJECTIVES: To determine the association between usages of proton pump inhibitors (PPIs) and subsequent risk of pneumonia in dementia patients. DESIGN: Retrospective cohort study. SETTING: Taiwanese National Health Insurance Research Database. PARTICIPANTS: The study cohort consisted of 786 dementia patients with new PPI usage and 786 matched dementia patients without PPI usage. MEASUREMENTS: The study endpoint was defined as the occurrence of pneumonia...
March 21, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28321587/analytical-methods-for-the-quantification-of-histamine-and-histamine-metabolites
#19
Heike Bähre, Volkhard Kaever
The endogenous metabolite histamine (HA) is synthesized in various mammalian cells but can also be ingested from exogenous sources. It is involved in a plethora of physiological and pathophysiological processes. So far, four different HA receptors (H1R-H4R) have been described and numerous HAR antagonists have been developed. Contemporary investigations regarding the various roles of HA and its main metabolites have been hampered by the lack of highly specific and sensitive analytic methods for all of these analytes...
March 21, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28321304/gastric-heterotopia-in-rectum-a-literature-review-and-its-diagnostic-pitfall
#20
Peyman Dinarvand, Ashley A Vareedayah, Nancy J Phillips, Christine Hachem, Jinping Lai
OBJECTIVES: The term heterotopia, in pathology, refers to the presence of normal tissues at foreign sites. Gastric heterotopia has been reported anywhere in the gastrointestinal tract. However, the presence of gastric heterotopia in the rectum is very rare. METHODS: We, here, report a rare case of a localized 2-cm area of cratered mucosa with heaped-up borders in the rectum of a 51-year-old, asymptomatic woman who underwent screening colonoscopy. RESULTS: Histologic examination of the biopsy from the lesional tissue in rectum demonstrated fragments of rectal mucosa co-mingling with oxyntic- and antral-type gastric mucosa...
2017: SAGE open medical case reports
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