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H2 receptor antagonist

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https://www.readbyqxmd.com/read/28188977/lack-of-incremental-effect-of-histamine-receptor-antagonists-over-proton-pump-inhibitors-on-the-risk-of-neoplastic-progression-in-patients-with-barrett-s-esophagus-a-cohort-study
#1
Prashanthi N Thota, Kaveh Hajifathalian, Tanmayee Benjamin, Ashok Runkana, Rocio Lopez, Madhusudhan R Sanaka
AIMS: Long-term acid suppression lowers the risk of progression to esophageal adenocarcinoma (EAC) in patients with Barrett's esophagus (BE). With the recent reports about harmful effects of chronic proton pump inhibitor (PPI) use, there is renewed interest about alternative methods of acid suppression. Hence, our aim was to study the effect of H2 receptor antagonists (H2RA) on the risk of progression to neoplasia in our BE cohort. METHODS: This is a retrospective analysis of prospectively collected data of patients in our BE Registry from 2002 to 2015...
February 11, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28185047/histaminergic-h1-and-h2-receptors-mediate-the-effects-of-propofol-on-the-noradrenalin-inhibited-neurons-in-rat-ventrolateral-preoptic-nucleus
#2
Yang Liu, Yu Zhang, Kun Qian, Lin Zhang, Tian Yu
The ventrolateral preoptic nucleus is a sleep-promoting nucleus located in the basal forebrain. A commonly used intravenous anesthetic, propofol, had been reported to induce sleep spindles and augment the firing rate of neurons in ventrolateral preoptic nucleus, but the underlining mechanism is yet to be known. By using patch clamp recording on neuron in acute brain slice, present study tested if histaminergic H1 and H2 receptors play a role in the effect of propofol on the noradrenalin-inhibited neurons in ventrolateral preoptic nucleus...
February 9, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28176470/effect-of-sustained-elevated-gastric-ph-levels-on-gefitinib-exposure
#3
Weifeng Tang, Helen Tomkinson, Eric Masson
This open-label, randomized, phase 1 crossover study investigated the effect of elevated gastric pH level (>5) on the relative bioavailability and pharmacokinetic profile of the epidermal growth factor receptor tyrosine kinase inhibitor gefitinib. Healthy male volunteers (n = 26) were randomized to gefitinib 250 mg (fasted), either alone on day 1 (unmodified gastric pH) or 1 hour following the second of 2 oral doses of the H2 -receptor antagonist ranitidine 450 mg (elevated gastric pH). After a 3-week washout period, volunteers crossed to the other treatment...
February 8, 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/28160941/the-topological-phase-diagram-of-cimetidine-a-case-of-overall-monotropy
#4
R Céolin, I B Rietveld
Cimetidine is a histamine H2-receptor antagonist used against peptic ulcers. It is known to exhibit crystalline polymorphism. Forms A and D melt within 0.35 degrees from each other and the enthalpies of fusion are similar as well. The present paper demonstrates how to construct a pressure-temperature phase diagram with only calorimetric and volumetric data available. The phase diagram provides the stability domains and the phase equilibria for the phases A, D, the liquid and the vapor. Cimetidine is overall monotropic with form D the only stable solid phase...
February 1, 2017: Annales Pharmaceutiques Françaises
https://www.readbyqxmd.com/read/28153970/a-rare-case-of-famotidine-induced-delirium-in-a-peritoneal-dialysis-patient
#5
Gary C W Chan, K M Lee, Lorraine P Y Kwan, Maggie M Y Mok, Maggie K M Ma, Desmond Y H Yap, Sydney C W Tang
H2 receptor antagonists are commonly employed to manage gastro-esophageal reflux and peptic ulcer diseases with a very low incidence of side effects. Herein, we report an extremely rare incidence of famotidine-induced acute confusion in a patient with end-stage renal failure. We also discuss the pharmacokinetic properties of famotidine and its interplay with compromised renal function to result in neuropsychiatric manifestations, highlighting the importance of dosage ad ustment in individuals with renal insufficiency...
January 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28139747/roxatidine-attenuates-mast-cell-mediated-allergic-inflammation-via-inhibition-of-nf-%C3%AE%C2%BAb-and-p38-mapk-activation
#6
Minho Lee, Na Young Lee, Kyung-Sook Chung, Se-Yun Cheon, Kyung-Tae Lee, Hyo-Jin An
Roxatidine is an active metabolite of roxatidine acetate hydrochloride which is a histamine H2-receptor antagonist that is used to treat gastric and duodenal ulcers. In this study, we investigated the anti-allergic inflammatory effects and the underlying molecular mechanism of roxatidine in phorbol 12-myristate 13-acetate and calcium ionophore (PMACI)-stimulated human mast cells-1 (HMC-1), compound 48/80-induced anaphylactic animal model and chemical allergen-induced contact hypersensitivity (CHS) models. Roxatidine suppressed the mRNA and protein expression of inflammatory cytokines such as TNF-α, IL-6, and IL-1β in PMACI-stimulated HMC-1 and compound 48/80-induced anaphylactic mice...
January 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28138903/the-treatment-of-giant-cell-arteritis
#7
REVIEW
Imran Jivraj, Madhura Tamhankar
Giant cell arteritis (GCA) is a systemic inflammatory vasculitis affecting medium and large vessels with potentially sight and life-threatening complications. Early diagnosis and prompt treatment are imperative in order to prevent vision loss and progression of the disease. Erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) are inflammatory markers which are elevated in the majority of patients and support the diagnosis of GCA among patients who present with typical symptoms. GCA is confirmed with superficial temporal artery biopsy which demonstrates characteristic pathological findings...
January 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/28119312/stoppfrail-screening-tool-of-older-persons-prescriptions-in-frail-adults-with-limited-life-expectancy-consensus-validation
#8
Amanda Hanora Lavan, Paul Gallagher, Carole Parsons, Denis O'Mahony
OBJECTIVE: to validate STOPPFrail, a list of explicit criteria for potentially inappropriate medication (PIM) use in frail older adults with limited life expectancy. DESIGN: a Delphi consensus survey of an expert panel comprising academic geriatricians, clinical pharmacologists, palliative care physicians, old age psychiatrists, general practitioners and clinical pharmacists. SETTING: Ireland. SUBJECTS: seventeen panellists...
January 23, 2017: Age and Ageing
https://www.readbyqxmd.com/read/28107257/perceived-stress-as-a-risk-factor-for-dyspepsia-a-register-based-cohort-study
#9
Ulrik Deding, Christian Torp-Pedersen, Henrik Bøggild
OBJECTIVE: Dyspepsia is a common condition and has a huge impact on quality of life and working capacity, but its causes are not well understood. An association between stress and dyspepsia has been debated for decades, but the issue has not been resolved. We examined the 3-year risk of redeeming a proton-pump inhibitor or an H2-receptor antagonist as a proxy of dyspepsia according to the level of perceived stress. PARTICIPANTS AND METHODS: Perceived stress was measured in a general health survey of 16 124 Danes aged older than 16 years of age in 2010 using Cohen's Perceived Stress Scale...
January 21, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28076696/proton-pump-inhibitors-for-preventing-non-steroidal-anti-inflammatory-drug-induced-gastrointestinal-toxicity-a-systematic-review
#10
Man Yang, Min He, Miao Zhao, Bing Zou, Jun Liu, Ling-Min Luo, Qiu-Lan Li, Jun-Hui He, Ping-Guang Lei
OBJECTIVE: Proton pump inhibitors (PPIs) are recommended for preventing gastrointestinal lesions induced by non-steroidal anti-inflammatory drugs (NSAIDs). We performed this study: (1) to evaluate the effectiveness and safety of PPIs, (2) to explore the association between effectiveness and potential influential factors, and (3) to investigate the comparative effect of different PPIs. METHODS: MEDLINE, EMBASE, and the Cochrane Library were searched to identify randomized controlled trials comparing different classes of PPIs, or comparing PPIs with placebo, H2 receptor antagonists or misoprostol in NSAIDs users...
January 25, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28056333/-recommendation-for-the-prevention-and-treatment-of-non-steroidal-anti-inflammatory-drug-induced-gastrointestinal-ulcers-and-its-complications
#11
(no author information available yet)
Non-steroidal anti-inflammatory drugs (NSAIDs) are a broad class of non glucocorticoid drugs which are extensively used in anti-inflammatory, analgesic, and antipyretic therapies. However, NSAIDs may cause many side effects, most commonly in gastrointestinal(GI) tract. Cardiovascular system, kidney, liver, central nervous system and hematopoietic system are also involved. NSAID-induced GI side effects not only endanger the patients' health, increase mortality, but also greatly increase the cost of medical care...
January 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28056068/the-association-between-polypharmacy-and-dementia-a-nested-case-control-study-based-on-a-12-year-longitudinal-cohort-database-in-south-korea
#12
Hae-Young Park, Ji-Won Park, Hong Ji Song, Hyun Soon Sohn, Jin-Won Kwon
Dementia is a major concern among growing chronic diseases in the aging society and its association with polypharmacy has not been adequately assessed. The objective of this study was to determine the association between polypharmacy and dementia through multiple statistical approaches. We conducted a nested case-control study for newly diagnosed dementia cases using the South Korean National Health Insurance Service sample cohort database (2002-2013, n = 1,025,340). Interactions between polypharmacy (an average use of ≥5 prescription drugs daily) and comorbidities or potentially inappropriate medications (PIMs) were tested...
2017: PloS One
https://www.readbyqxmd.com/read/28054368/acid-suppression-medications-and-bacterial-gastroenteritis-a-population-based-cohort-study
#13
Li Wei, Lasantha Ratnayake, Gabby Phillips, Chris C McGuigan, Steve V Morant, Robert W Flynn, Isla S Mackenzie, Thomas M MacDonald
AIMS: To investigate whether acid suppression medicines (ASMs) increase the risk of bacterial gastroenteritis. METHODS: A population-based, propensity-score matched cohort study using a record-linkage database in Tayside, Scotland. The study consisted of 188,323 exposed to ASMs [proton pump inhibitors (PPIs) and H2 receptor antagonists (H2RA)] and 376,646 controls (a propensity-score matched cohort from the rest of population who were not exposed to ASMs) between 1999 and 2013...
January 5, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28042359/non-prescription-proton-pump-inhibitors-for-self-treating-frequent-heartburn-the-role-of-the-canadian-pharmacist
#14
David Armstrong, Nardine Nakhla
Heartburn and acid regurgitation are the cardinal symptoms of gastroesophageal reflux and occur commonly in the Canadian population. Multiple non-prescription treatment options are available for managing these symptoms, including antacids, alginates, histamine-H2 receptor antagonists (H2RAs), and proton-pump inhibitors (PPIs). As a result, pharmacists are ideally positioned to recommend appropriate treatment options based upon an individual's needs and presenting symptoms, prior treatment response, comorbid medical conditions, and other relevant factors...
October 2016: Pharmacy Practice
https://www.readbyqxmd.com/read/27975177/involvement-of-histaminergic-and-noradrenergic-receptors-in-the-oxytocin-induced-food-intake-in-neonatal-meat-type-chicks
#15
Seyed Vahid Mirnaghizadeh, Morteza Zendehdel, Vahab Babapour
Oxytocin neurons have a physiological role in food intake and energy balance. Several studies have shown that central histaminergic and adrenergic systems synapse on oxytocin neurons but there is no information for their interaction on food intake regulation in birds. The purpose of this study was to examine the effects of intracerebroventricular (ICV) injection of α-fluoromethylhistidine (α-FMH, histidine decarboxylase inhibitor), chlorpheniramine (histamine H1 receptors antagonist), famotidine (histamine H2 receptors antagonist), thioperamide (histamine H3 receptors antagonist), prazosin (α1 receptor antagonist), yohimbine (α2 receptor antagonist), metoprolol (β1 adrenergic receptor antagonist), ICI 118,551 (β2 adrenergic receptor antagonist) and SR59230R (β3 adrenergic receptor antagonist) on oxytocin-induced hypophagia in 3-h food-deprived (FD3) neonatal broiler chicken...
March 2017: Veterinary Research Communications
https://www.readbyqxmd.com/read/27967242/low-dose-dihydrotestosterone-drives-metabolic-dysfunction-via-cytosolic-and-nuclear-hepatic-androgen-receptor-mechanisms
#16
Stanley Andrisse, Shameka Childress, Yaping Ma, Katelyn Billings, Yi Chen, Ping Xue, Ashley Stewart, Momodou L Sonko, Andrew Wolfe, Sheng Wu
Androgen excess in women is associated with metabolic dysfunction (obesity, hyperinsulinemia, insulin resistance, and increased risk of type 2 diabetes (T2D)) and reproductive dysfunction (polycystic ovaries, amenorrhea, dysregulated gonadotropin release, and infertility). We sought to identify the effects of androgen excess on glucose metabolic dysfunction and the specific mechanisms of action by which androgens are inducing pathology. We developed a mouse model that displayed pathophysiological serum androgen levels with normal body mass/composition to ensure that the phenotypes were directly from androgens and not an indirect consequence of obesity...
December 14, 2016: Endocrinology
https://www.readbyqxmd.com/read/27942432/mast-cell-clonal-disorders-classification-diagnosis-and-management
#17
REVIEW
Merel C Onnes, Luciana K Tanno, Joanne N G Oude Elberink
Mast cell clonal disorders are characterized by the clonal proliferation of pathological mast cells as a result of somatic mutations in the KIT gene, most commonly the D816V mutation. Accumulation and degranulation of these cells causes a wide variety of symptoms. Mast cell clonal disorders can be divided into mastocytosis and monoclonal mast cell activation syndrome, depending of the level of clonality. The severity of mastocytosis varies from an indolent variant with a good prognosis, to an aggressive condition with short life expectancy...
2016: Current Treatment Options in Allergy
https://www.readbyqxmd.com/read/27922185/relaxin-family-peptides-structure-activity-relationship-studies
#18
REVIEW
Nitin A Patil, K Johan Rosengren, Frances Separovic, John D Wade, Ross A D Bathgate, Mohammed Akhter Hossain
The human relaxin peptide family consists of seven cystine-rich peptides, four of which are known to signal through relaxin family peptide receptors, RXFP1-4. Considering the vital roles these peptides play in physiology and various diseases, they are of considerable importance for drug discovery and development. Detailed structure-activity relationship (SAR) studies towards understanding the role of important residues in each of these peptides have been reported over the years and utilised for design of antagonists and minimised agonist variants...
December 6, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27913306/effect-of-bradykinin-receptor-antagonism-on-ace-inhibitor-associated-angioedema
#19
Brittany T Straka, Claudia E Ramirez, James B Byrd, Elizabeth Stone, Alencia Woodard-Grice, Hui Nian, Chang Yu, Aleena Banerji, Nancy J Brown
BACKGROUND: The B2 receptor antagonist icatibant is approved for treatment of attacks of hereditary angioedema. Icatibant has been reported to decrease time-to-resolution of angiotensin-converting enzyme (ACE) inhibitor-associated angioedema in 1 study of European patients. OBJECTIVE: We sought to test the hypothesis that a bradykinin B2 receptor antagonist would shorten time-to-resolution from ACE inhibitor-associated angioedema. METHODS: Patients with ACE inhibitor-associated angioedema (defined as swelling of lips, tongue, pharynx, or face during ACE inhibitor use and no swelling in the absence of ACE inhibitor use) were enrolled at Vanderbilt University Medical Center from October 2007 through September 2015 and at Massachusetts General Hospital in 2012...
November 29, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27895933/influence-of-proton-pump-inhibitors-and-histamine-h2-receptor-antagonists-on-serum-phosphorus-level-control-by-calcium-carbonate-in-patients-undergoing-hemodialysis-a-retrospective-medical-chart-review
#20
Masaomi Tatsuzawa, Ryuichi Ogawa, Atsushi Ohkubo, Kazuyo Shimojima, Kunimi Maeda, Hirotoshi Echizen, Akihisa Miyazaki
BACKGROUND: Hyperphosphatemia is one of the common complications in patients undergoing hemodialysis. Although calcium carbonate (CaC) is often used to control serum inorganic phosphorus level in dialysis patients, co-administration of gastric acid reducers (ARs) may interfere with the phosphate binding effect of CaC. We performed a retrospective medical chart review to study whether ARs attenuate the hypophosphatemic effect of CaC in patients undergoing hemodialysis. METHODS: One hundred and eight chronic hemodialysis patients receiving either CaC alone or CaC concomitant with one of the ARs (proton pump inhibitors and histamine H2-receptor antagonists) were retrieved from the medical charts in Juntendo University Nerima Hospital...
2016: Journal of Pharmaceutical Health Care and Sciences
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