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Ranitidine

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https://www.readbyqxmd.com/read/29330976/ranitidine-can-potentiate-the-prokinetic-effect-of-itopride-at-low-doses-an-in-vitro-study
#1
Aroosa Ishtiaq Butt, Bushra Tayyaba Khan, Asma Khan, Qamar-Uz-Zaman Khan
BACKGROUND: Gastroparesis and GERD occur concomitantly in 40 percent of the cases. Prokinetic drugs and acid blockers are employed as the main treatment modality. Ranitidine is an acid blocker with additional prokinetic activity and Itopride is a known prokinetic drug. This study was designed to observe the synergistic potentiating prokinetic effect of Ranitidine on itopride on isolated duodenum of rabbits. METHODS: Ranitidine (10-5-10-3) and itopride (10-6-10-5) were added in increasing concentrations to isolated duodenum of rabbits and contractions were recorded on PowerLab Data acquisition unit AHK/214...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29289865/fate-of-pharmaceutical-active-compounds-phacs-from-river-yamuna-india-an-ecotoxicological-risk-assessment-approach
#2
Pravin K Mutiyar, Sanjay Kumar Gupta, Atul Kumar Mittal
The river Yamuna is a major tributary of river Ganges and is a major source of freshwater in the National Capital Territory (NCT) catering 16.8 million people. This is the first report on occurrence, fate and ecotoxicological risk assessment of various pharmaceuticals active compounds (PhACs) in the Yamuna river. In this study, spatial and temporal distribution of nine PhACs "aspirin, ibuprofen, paracetamol, caffeine, ranitidine, diclofenac, carbamazepine, codeine, and diazepam", belonging to different therapeutic groups have been reported...
December 28, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29236753/effects-of-genetic-polymorphisms-on-the-oct1-and-oct2-mediated-uptake-of-ranitidine
#3
Marleen Julia Meyer, Tina Seitz, Jürgen Brockmöller, Mladen Vassilev Tzvetkov
BACKGROUND: Ranitidine (Zantac®) is a H2-receptor antagonist commonly used for the treatment of acid-related gastrointestinal diseases. Ranitidine was reported to be a substrate of the organic cation transporters OCT1 and OCT2. The hepatic transporter OCT1 is highly genetically variable. Twelve major alleles confer partial or complete loss of OCT1 activity. The effects of these polymorphisms are highly substrate-specific and therefore difficult to predict. The renal transporter OCT2 has a common polymorphism, Ala270Ser, which was reported to affect OCT2 activity...
2017: PloS One
https://www.readbyqxmd.com/read/29216899/generic-reference-and-generic-generic-bioequivalence-of-forty-two-randomly-selected-on-market-generic-products-of-fourteen-immediate-release-oral-drugs
#4
Muhammad M Hammami, Sophia J S De Padua, Rajaa Hussein, Eman Al Gaai, Nesrine A Khodr, Reem Al-Swayeh, Syed N Alvi, Nada Binhashim
BACKGROUND: The extents of generic-reference and generic-generic average bioequivalence and intra-subject variation of on-market drug products have not been prospectively studied on a large scale. METHODS: We assessed bioequivalence of 42 generic products of 14 immediate-release oral drugs with the highest number of generic products on the Saudi market. We conducted 14 four-sequence, randomized, crossover studies on the reference and three randomly-selected generic products of amlodipine, amoxicillin, atenolol, cephalexin, ciprofloxacin, clarithromycin, diclofenac, ibuprofen, fluconazole, metformin, metronidazole, paracetamol, omeprazole, and ranitidine...
December 8, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29213351/spondias-purpurea-l-anacardiaceae-antioxidant-and-antiulcer-activities-of-the-leaf-hexane-extract
#5
Cynthia Layse Ferreira de Almeida, Samara Alves Brito, Temístocles Italo de Santana, Henrique Bandeira Alves Costa, Carlson Helder Reis de Carvalho Júnior, Márcia Vanusa da Silva, Lécio Leone de Almeida, Larissa Araújo Rolim, Vanda Lucia Dos Santos, Almir Gonçalves Wanderley, Teresinha Gonçalves da Silva
Spondias purpurea is used in folk medicine to treat diarrhea and diuresis. The objective of this study was to evaluate the phytochemical profile and antioxidant and antiulcer activities of the hexane extract of the leaves of S. purpurea (SpHE). Phytochemical profile was evaluated via thin layer chromatography (TLC) and HPLC. SpHE was screened for antioxidant activities using DPPH, ABTS, FRAP, and phosphomolybdenum assays. To determine its antiulcer properties, animals were pretreated with injured control, lansoprazole, ranitidine, carbenoxolone, or SpHE (12...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29199169/treatment-of-reflux-disease-during-pregnancy-and-lactation
#6
Ülkü Dağlı, İsmail Hakkı Kalkan
Gastroesophageal reflux disease (GERD) is frequently seen during pregnancy. In the medical treatment of pregnant women with GERD, alginic acid and sucralfate can be used. Calcium- and magnesium-based antacids can also be used, particularly for patients with preeclampsia. In particular, ranitidine -a histamine-2 receptor blocker- is preferred. In the case of non-responsiveness to the abovementioned treatments, proton pump inhibitors (PPIs), except omeprazole, can be given considering the benefit-harm ratio for the mother and fetus after the first trimester...
December 2017: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/29197284/detection-of-ppcps-in-marine-organisms-from-contaminated-coastal-waters-of-the-saudi-red-sea
#7
Aasim M Ali, Helene Thorsen Rønning, Leiv K Sydnes, Walied M Alarif, Roland Kallenborn, Sultan S Al-Lihaibi
The occurrence of PPCPs in macroalgae, barnacle and fish samples from contaminated coastal waters of the Saudi Red Sea is reported. Solvent extraction followed by solid phase extraction was applied to isolate the compounds, and their quantification was carried out by high performance liquid chromatography-tandem mass spectrometry. Atenolol, ranitidine, chlorpheniramine, DEET, and atrazine were detected in one or more macroalgae at <LOQ concentration, whereas caffeine, methylparaben, and carbamazepine were present atmaximum concentrations of 41...
November 29, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29172753/design-and-characterization-of-calcium-free-in-situ-gel-formulation-based-on-sodium-alginate-and-chitosan
#8
Linda Belhadji, Abdelkader HadjSadok, Nadji Moulai-Mostefa
The aim of this study was to prepare and evaluate calcium-free sustained release drug delivery systems, based on the in-situ gelation of oral suspensions containing chitosan, sodium alginate and Ranitidine as drug model. The combined effects of polymer concentrations and their interactions on the rheological characteristics of both gels and suspensions and, on the kinetics of drug release were evaluated by using a central composite face-centered (CCF) design. Rheological analysis showed that suspensions were potentially stable, with a viscosity increased by 1000 times compared to that of water...
November 24, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/29145067/role-of-thalamic-ventral-posterolateral-nucleus-histamine-h2-and-opiate-receptors-in-modulation-of-formalin-induced-muscle-pain-in-rats
#9
Hamid Ghasemi, Esmaeal Tamaddonfard, Farhad Soltanalinejad
BACKGROUND: Histamine and opiate systems contribute to supraspinal processing of pain. In the present study, we investigated the effects of microinjection of histamine and agonists and antagonists of histamine H2 and opiate receptors into the thalamic ventral posterolateral nucleus on muscle pain in rats. METHODS: The thalamic ventral posterolateral nuclei were bilaterally implanted with two guide cannulas. Muscle pain was induced by intramuscular injection of a diluted formalin solution (2...
May 8, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29132544/histaminergic-receptors-modulate-spinal-cord-injury-induced-neuronal-nitric-oxide-synthase-upregulation-and-cord-pathology-new-roles-of-nanowired-drug-delivery-for-neuroprotection
#10
Hari S Sharma, Ranjana Patnaik, Dafin F Muresanu, José V Lafuente, Asya Ozkizilcik, Z Ryan Tian, Ala Nozari, Aruna Sharma
The possibility that histamine influences the spinal cord pathophysiology following trauma through specific receptor-mediated upregulation of neuronal nitric oxide synthase (nNOS) was examined in a rat model. A focal spinal cord injury (SCI) was inflicted by a longitudinal incision into the right dorsal horn of the T10-11 segments. The animals were allowed to survive 5h. The SCI significantly induced breakdown of the blood-spinal cord barrier to protein tracers, reduced the spinal cord blood flow at 5h, and increased the edema formation and massive upregulation of nNOS expression...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/29128794/baicalin-protects-against-gastroduodenal-ulcers-via-the-modulation-of-nrf2-expression-experimental-biochemical-and-histological-analyses
#11
Tao Zhang, Dong Yang, Xiangyu Meng
BACKGROUND: The present study aimed to determine the mechanisms underlying the gastroprotective effects of baicalin using several animal models of chemically induced gastric ulcers. METHODS: The gastroprotective effects of baicalin against ulcers induced by water immersion stress, alcohol-induced ligation, and indomethacin-induced pylorus ligation were assessed in the present study. Additionally, macroscopic evaluations were performed at the completion of the study and Western blot analyses of Nrf2 were conducted to determine the possible mechanisms of action underlying the effects of baicalin...
July 8, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29121900/synergistic-gastroprotective-activity-of-methanolic-extract-of-a-mixture-of-melastoma-malabathricum-and-muntingia-calabura-leaves-in-rats
#12
Siti Zawanah Halim, Zainul Amiruddin Zakaria, Maizatul Hasyima Omar, Norhafizah Mohtarrudin, Ikarastika Rahayu Abdul Wahab, Muhammad Nazrul Hakim Abdullah
BACKGROUND: Melastoma malabathricum L. (family Melastomaceae; MM) and Muntingia calabura L. (family Elaeocarpaceae; MC) have been separately reported to possess gastroprotective activity. In an attempt to develop a pharmaceutical product with antiulcer potential, the synergistic gastroprotective activity of methanolic extract of a mixture of MM and MC (MMMC) at various ratios was evaluated in rat models. METHODS: Rats were pre-treated orally with 2% Tween 80 (vehicle), 100 mg/kg ranitidine (reference drug) or MMMC (ratios of 1:1, 1:3 and 3:1 (v/v); doses of 15, 150 or 300 mg/kg) and then subjected to the ethanol-induced gastric ulcer or pyloric ligation assays...
November 9, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29115998/effect-of-gastric-acid-suppressive-therapy-and-biological-variation-of-serum-gastrin-concentrations-in-dogs-with-chronic-enteropathies
#13
Romy M Heilmann, Nora Berghoff, Niels Grützner, Nolie K Parnell, Jan S Suchodolski, Jörg M Steiner
BACKGROUND: Serum gastrin concentration can help diagnose gastrinomas in dogs if >3-10× the upper reference limit (URL), but antisecretory therapy and other conditions can also cause hypergastrinemia. Effects of antisecretory therapy (famotidine or ranitidine, omeprazole) on serum gastrin concentration in dogs with chronic enteropathy (CE) and its biological variation (BV) are unknown. Aim of the study was to evaluate serum gastrin in acid-suppressant-treated or -naïve CE dogs; test the association between serum gastrin and histopathologic findings in acid-suppressant-naïve CE dogs; and evaluate the BV of serum gastrin in dogs not receiving any gastric acid suppressive therapy...
November 7, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29102410/dress-syndrome-induced-by-ranitidine
#14
Timothy J Watts, Rubaiyat Haque
No abstract text is available yet for this article.
October 25, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/29100966/the-detection-and-quantification-in-vivo-and-in-real-time-of-hydrogen-sulfide-in-ethanol-induced-lesions-in-rat-stomachs-using-an-ion-sensitive-electrode
#15
Josué A Velázquez-Moyado, Andrés Navarrete
INTRODUCTION: The development of electrochemical sensors for the detection of small molecules has already had a significant effect on the study of biology because of their selectivity and ability to measure low concentrations of small molecules that regulate various functions in living organisms. Hydrogen sulfide (H2S) is a gasotransmitter produced at low levels in several tissues including the stomach. Here, we propose a new method for detecting low concentrations of this transmitter in the rat stomach, in-vivo and in real time, with applications in pharmacology and physiology...
October 31, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/29070274/long-term-omalizumab-use-in-the-treatment-of-exercise-induced-anaphylaxis
#16
Mark R Peterson, Christopher A Coop
Reported is a case of a 39-year-old male who was diagnosed with exercise-induced anaphylaxis (EIA). He was initially treated prophylactically with fexofenadine, montelukast, and ranitidine. He also used an epinephrine autoinjector as needed. He was refractory to these medications and continued to have episodes of EIA. He was then started on a trial of omalizumab, an immunoglobulin E monoclonal antibody, and had resolution of the EIA episodes. After discontinuation of the omalizumab, the EIA episodes returned...
October 1, 2017: Allergy & Rhinology
https://www.readbyqxmd.com/read/29068472/factors-affecting-the-dissipation-of-pharmaceuticals-in-freshwater-sediments
#17
Omar S A Al-Khazrajy, Ed Bergström, Alistair B A Boxall
Degradation is one of the key processes governing the impact of pharmaceuticals in the aquatic environment. Most studies on the degradation of pharmaceuticals have focused on soil and sludge with fewer exploring persistence in aquatic sediments. Here we investigate the dissipation of six pharmaceuticals from different therapeutic classes in a range of sediment types. Dissipation of each pharmaceutical was found to follow first-order exponential decay. Half-lives in the sediments ranged from 9.5 d (atenolol) to 78...
October 25, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29044014/-anaphylaxis-and-allergic-reactions-during-surgery-and-medical-procedures
#18
Blas J Larrauri, María Gabriela Torre, Eloísa Malbrán, María Cecilia Juri, Diego S Fernández Romero, Alejandro Malbrán
Anaphylaxis during anesthesia is an unpredictable, severe, and rare reaction. It has an incidence of 1/10 000 to 1/20 000 surgeries. In most series, the responsible drugs include neuromuscular blocking agents, latex, or antibiotics. The frequency and etiology of systemic allergic reactions in other medical procedures are largely unknown. The identification of responsible drugs of anaphylaxis is a complex task, requiring testing of all medications and substances used during surgery. We describe our experience in a retrospective study of 15 patients...
2017: Medicina
https://www.readbyqxmd.com/read/29032675/carbon-hydrogen-and-nitrogen-isotope-fractionation-trends-in-n-nitrosodimethylamine-reflect-the-formation-pathway-during-chloramination-of-tertiary-amines
#19
Stephanie Spahr, Urs von Gunten, Thomas B Hofstetter
Assessing the precursors and reactions leading to the carcinogenic N-nitrosodimethylamine (NDMA) during drinking water disinfection is a major challenge. Here, we investigate whether changes of 13C/12C, 2H/1H, and 15N/14N ratios of NDMA give rise to isotope fractionation trends that can be used to infer NDMA formation pathways. We carried out compound-specific isotope analysis (CSIA) of NDMA during chloramination of four tertiary amines that produce NDMA at high yields, namely ranitidine, 5-(dimethylaminomethyl)furfuryl alcohol, N,N-dimethylthiophene-2-methylamine and N,N-dimethylbenzylamine...
October 16, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28991940/posttraumatic-stress-disorder-often-missed-in-primary-care
#20
Adrienne A Williams
DeSean W, a 47-year-old man, returned to his primary care clinic with a new complaint of epigastric burning that had been bothering him for the past 4 months. He had tried several over-the-counter remedies, which provided no relief. He also remained concerned--despite assurances to the contrary at previous clinic visits--that he had contracted a sexually-transmitted disease (STD) after going to a bar one night 4 to 5 months ago. At 2 other clinic visits since that time, STD test results were negative. At this current visit, symptoms and details of sexual history were unchanged since the last visit, with the exception of the epigastric pain...
October 2017: Journal of Family Practice
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