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Acid reflux

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https://www.readbyqxmd.com/read/28550489/impedance-ph-monitoring-for-diagnosis-of-reflux-disease-new-perspectives
#1
REVIEW
Marzio Frazzoni, Nicola de Bortoli, Leonardo Frazzoni, Salvatore Tolone, Vincenzo Savarino, Edoardo Savarino
Heartburn is the most specific symptom of gastroesophageal reflux disease (GERD). In clinical practice, heartburn relief by a proton pump inhibitor (PPI) trial does suffice to confirm GERD. However, an objective diagnosis of GERD is required before anti-reflux endoscopic or surgical interventions, independently from PPI response. Thus, since normal findings at upper endoscopy are detected in the majority of patients with heartburn, reflux monitoring is often required. When traditional catheter-based or wireless pH tests are used, reflux episodes are conventionally identified by pH drops below 4...
May 26, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28543861/postreflux-swallow-induced-peristaltic-wave-index-and-nocturnal-baseline-impedance-can-link-ppi-responsive-heartburn-to-reflux-better-than-acid-exposure-time
#2
L Frazzoni, M Frazzoni, N de Bortoli, S Tolone, M Furnari, I Martinucci, H Bertani, S Marchi, R Conigliaro, L Fuccio, V Savarino, E Savarino
BACKGROUND: Acid exposure time (AET) is considered the most useful parameter to predict response of reflux-related heartburn to medical or surgical treatment. However, recent studies showed high rates of heartburn response to proton pump inhibitor (PPI) therapy in patients with normal AET. We aimed to compare the efficacy of postreflux swallow-induced peristaltic wave (PSPW) index and mean nocturnal baseline impedance (MNBI) with AET in linking PPI-responsive heartburn to reflux. METHODS: Off-therapy impedance-pH tracings from 425 patients, 317 with PPI-responsive and 108 with PPI-refractory heartburn were blindly re-analyzed...
May 25, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28543183/a-novel-k-competitive-acid-blocker-yh4808-sustains-inhibition-of-gastric-acid-secretion-with-a-faster-onset-than-esomeprazole-randomised-clinical-study-in-healthy-volunteers
#3
S Yi, H Lee, S B Jang, H M Byun, S H Yoon, J-Y Cho, I-J Jang, K-S Yu
BACKGROUND: YH4808, a K(+) -competitive acid blocker, is under clinical development for the treatment of acid-related disorders, such as gastroesophageal reflux disease. AIMS: We aimed to determine the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of YH4808, compared to placebo and esomeprazole. METHODS: This double-blind, randomised, placebo- and active comparator (esomeprazole)-controlled study was conducted with 123 healthy male volunteers...
May 21, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28535800/comparison-of-oesophageal-function-tests-between-chinese-non-erosive-reflux-disease-and-reflux-hypersensitivity-patients
#4
Feng Gao, Yan Gao, Xue Chen, Jie Qian, Jie Zhang
BACKGROUND: By means of 24 h multi-channel intraluminal impedance and pH recording (MII/pH), patients with heartburn and normal upper gastrointestinal endoscopy findings can be classified into those with non-erosive reflux disease (NERD) and those with reflux hypersensitivity (RH). Therefore, in this study, we investigated the difference in oesophageal function tests in Chinese patients with NERD and RH. METHODS: NERD patients were selected from the digestive department, Beijing Anzhen Hospital and Beijing Chao-Yang Hospital, Capital Medical University, after upper gastrointestinal endoscope, high-resolution manometry and impedance (HRiM), and MII/pH examinations between 2014 and 2016...
May 23, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28533674/impact-of-gastroesophageal-reflux-control-through-tailored-proton-pump-inhibition-therapy-or-fundoplication-in-patients-with-barrett-s-esophagus
#5
Francisco Baldaque-Silva, Michael Vieth, Mumen Debel, Bengt Håkanson, Anders Thorell, Nuno Lunet, Huan Song, Miguel Mascarenhas-Saraiva, Gisela Pereira, Lars Lundell, Hanns-Ulrich Marschall
AIM: To determine the impact of upwards titration of proton pump inhibition (PPI) on acid reflux, symptom scores and histology, compared to clinically successful fundoplication. METHODS: Two cohorts of long-segment Barrett's esophagus (BE) patients were studied. In group 1 (n = 24), increasing doses of PPI were administered in 8-wk intervals until acid reflux normalization. At each assessment, ambulatory 24 h pH recording, endoscopy with biopsies and symptom scoring (by a gastroesophageal reflux disease health related quality of life questionnaire, GERD/HRLQ) were performed...
May 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28533657/esophagitis-and-its-causes-who-is-guilty-when-acid-is-found-not-guilty
#6
EDITORIAL
Laurino Grossi, Antonio Francesco Ciccaglione, Leonardo Marzio
Esophagitis is mainly a consequence of gastroesophageal reflux disease, one of the most common diseases affecting the upper digestive tract. However the esophageal mucosa can also be targeted by some infectious, systemic or chemical conditions. Eosinophilic esophagitis (EoE) is an immune-mediated inflammatory disease, characterized by eosinophilic infiltration in the mucosa. Esophageal localization of Crohn's disease is not very common, but it should always be considered in patients with inflammatory bowel disease complaining of upper digestive tract symptoms...
May 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28523360/comparison-of-the-multichannel-intraluminal-impedance-ph-and-conventional-ph-for-measuring-esophageal-acid-exposure-a-propensity-score-matched-analysis
#7
Masato Hoshino, Nobuo Omura, Fumiaki Yano, Kazuto Tsuboi, Se Ryung Yamamoto, Shunsuke Akimoto, Takahiro Masuda, Hideyuki Kashiwagi, Katsuhiko Yanaga
BACKGROUND: The modalities for evaluating acid reflux in medical care for gastroesophageal reflux disease (GERD) include conventional pH (C-pH), wireless pH (Bravo(®)) and multichannel intraluminal impedance pH (MII-pH), which have been reported to vary with respect to the duration of acid reflux. In this study, we examined the difference between the acid reflux in C-pH and MII-pH among patients with GERD. METHODS: Prior to initial laparoscopic fundoplication carried out on 297 cases from December 1994 to April 2016, an upper gastrointestinal endoscopy and C-pH or MII-pH were conducted...
May 18, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28521699/food-and-gastroesophageal-reflux-disease
#8
Teodora Surdea-Blaga, Dana E Negrutiu, Mariana Palage, Dan L Dumitrascu
Gastroesophageal reflux disease is a chronic condition with a high prevalence in western countries. Transient lower esophageal sphincter relaxation episodes and a decreased lower esophageal sphincter pressure are the main mechanisms involved. Currently used drugs are efficient on reflux symptoms, but only as long as they are administered, because they do not modify the reflux barrier. Certain nutrients or foods are generally considered to increase the frequency of gastroesophageal reflux symptoms, therefore physicians recommend changes in diet and some patients avoid bothering foods...
May 15, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28514401/-differentiation-therapy-for-non-acidic-gastroesophageal-reflux-disease
#9
N B Lishchuk, V I Simanenkov, S V Tikhonov
AIM: To investigate the clinical and pathogenetic features of the non-acidic types of gastroesophageal reflux disease (GERD) and to evaluate the impact of combined therapy versus monotherapy on the course of this disease. SUBJECTS AND METHODS: The investigation enrolled 62 patients with non-acidic GERD. The follow-up period was 6 weeks. The patients were divided into 2 groups: 1) weakly acidic gastroesophageal refluxes (GER); 2) weakly alkaline GER. Then each group was distributed, thus making up 4 groups: 1) 19 patients with weakly acidic GER who received monotherapy with rabeprazole 20 mg/day; 2) 21 patients with weakly acidic GER had combined therapy with rabeprazole 20 mg and itopride; 3) 8 patients with weakly alkaline GER who received ursodeoxycholic acid (UDCA) monotherapy; and 4) 14 patients with weakly alkaline GER who had combined therapy with UDCA and itopride, The clinical symptoms of the disease, the endoscopic pattern of the upper gastrointestinal tract (GIT) mucosa, histological changes in the esophageal and gastric mucosa, and the results of 24-hour impedance pH monitoring were assessed over time...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28510429/copolymerization-of-carbon-dioxide-with-epoxides-catalyzed-by-structurally-well-characterized-dinickel-bis-benzotriazole-iminophenolate-complexes-influence-of-carboxylate-ligands-on-the-catalytic-performance
#10
Li-Shin Huang, Chen-Yen Tsai, Hui-Ju Chuang, Bao-Tsan Ko
A series of structurally well-defined dinickel carboxylate complexes based on the (R)BiIBTP derivatives [(R)BiIBTP = bis(benzotriazole iminophenolate), where R = 3C for the propyl-bridged backbone and 5C for the 2,2-dimethyl-1,3-propyl-bridged backbone] were synthesized and developed for copolymerization of CO2 and epoxides. The one-pot reactions of nickel perchlorate with the (R)BiIBTP-H2 proligands and an appropriate amount of carboxylic acid derivatives (CF3COOH or 4-X-C6H4CO2H; X = H, CF3, OMe) upon the addition of triethylamine in refluxing methanol (MeOH) afforded dinuclear nickel dicarboxylate complexes, which could be formulated as either [((R)BiIBTP)Ni2(O2CCF3)2] (1 and 2) or [((R)BiIBTP)Ni2(O2CC6H4-4-X)2] (3-7)...
May 16, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28508592/confining-functional-nanoparticles-into-colloidal-imine-based-cof-spheres-by-a-sequential-encapsulation-crystallization-method
#11
David Rodríguez-San-Miguel, Amirali Yazdi, Vincent Guillerm, Javier Pérez-Carvajal, Víctor Puntes, Daniel Maspoch, Felix Zamora
Here we report a two-step method that enables imparting new functionalities to covalent-organic frameworks by nanoparticle confinement. The direct reaction between 1,3,5-tris(4-aminophenyl)benzene and 1,3,5-benzenetricarbaldehyde in presence of a variety of metallic/metal oxide nanoparticles results in the nanoparticles being embedded in amorphous and non-porous imine-linked polymer organic spheres, NP@a-1. Post-treatment reactions of NP@a-1 with acetic acid under reflux lead to crystalline and porous imine-based COF hybrid spheres, NP@c-1...
May 16, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28508234/surgical-treatment-of-extraesophageal-manifestations-of-gastroesophageal-reflux-disease
#12
REVIEW
Feroze Sidwa, Alessandra L Moore, Elaine Alligood, P Marco Fisichella
OBJECTIVE: To review the current literature on the role of antireflux surgery (ARS) for the treatment of extraesophageal manifestations of GERD. The extraesophageal manifestations of gastroesophageal reflux disease (GERD) include chronic cough, laryngopharyngeal reflux, and asthma. They are responsible for significant morbidity in affected patients and a high economic burden on healthcare resources. We recently published a larger review on the symptoms, diagnosis, medical, and surgical treatment of the extraesophageal manifestations of GERD...
May 15, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28507913/role-of-gastroesophageal-reflux-disease-in-lung-transplantation
#13
REVIEW
Kelly E Hathorn, Walter W Chan, Wai-Kit Lo
Lung transplantation is one of the highest risk solid organ transplant modalities. Recent studies have demonstrated a relationship between gastroesophageal reflux disease (GERD) and lung transplant outcomes, including acute and chronic rejection. The aim of this review is to discuss the pathophysiology, evaluation, and management of GERD in lung transplantation, as informed by the most recent publications in the field. The pathophysiology of reflux-induced lung injury includes the effects of aspiration and local immunomodulation in the development of pulmonary decline and histologic rejection, as reflective of allograft injury...
April 24, 2017: World Journal of Transplantation
https://www.readbyqxmd.com/read/28506663/cough-associated-with-gastro-oesophageal-reflux-disease-gord-japanese-experience
#14
REVIEW
Akio Niimi
Differences in the aetiology as well as patient background of chronic cough have been recognised among US, UK, and Japan. One of the marked differences has been the prevalence of gastro-oesophageal reflux disease (GORD), which has been one of the top three causes in Western countries. It was indeed uncommon or rare in Japan, but, with the increasing prevalence of GOR itself, chronic cough associated with GORD seems to have become more common. In this article, cough associated with GORD will be reviewed based on literature and our Japanese experience...
May 12, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28502434/gastroesophageal-reflux-disease
#15
REVIEW
Hayat Mousa, Maheen Hassan
Gastroesophageal reflux (GER) is a normal physiologic process. It is important to distinguish GER from GER disease (GERD) since GER does not require treatment. Although a diagnosis of GERD can largely be based on history and physical alone, endoscopy and pH impedance studies can help make the diagnosis when there in atypical presentation. In children and adolescents, lifestyle changes and acid suppression are first-line treatments for GERD. In infants, acid suppression is not effective, but a trial of hydrolyzed formula can be considered, as milk protein sensitivity can be difficult to differentiate from GER symptoms...
June 2017: Pediatric Clinics of North America
https://www.readbyqxmd.com/read/28502210/-esophageal-complications-of-gastroesophageal-reflux-disease-consequences-or-defensive-reactions
#16
Örs Péter Horváth, Laura Bognár, András Papp, András Vereczkei
Gastroesophageal reflux disease affects more than 10% of the adult population. Most patients can be effectively treated with lifestyle changes and adequate acid-reducing therapy. However, about 10% of the patients remain symptomatic despite treatment and severe complications may develop. Interestingly, some of these complications seem to be a sort of defensive mechanism that may either alleviate the patient's symptoms or prevent developing further complications. In Barrett's esophagus, which can be unambigously considered as a complication of gastroesophageal reflux disease, reflux symptoms ruining the quality of life may significantly improve, since the metaplastic Barrett epithelium is much more resistent to gastric acid, than the normal epithelial lining of the esophagus...
May 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28501868/factors-associated-with-potassium-competitive-acid-blocker-non-response-in-patients-with-proton-pump-inhibitor-refractory-gastroesophageal-reflux-disease
#17
Masatsugu Okuyama, Kenichi Nakahara, Narika Iwakura, Tomoki Hasegawa, Maizumi Oyama, Ayumi Inoue, Hirotaka Ishizu, Hiroshi Satoh, Yasuhiro Fujiwara
BACKGROUND/AIMS: Approximately 20-40% of patients with gastroesophageal reflux disease (GERD) are refractory to proton pump inhibitor (PPI) treatment. The acid-inhibitory effect of vonoprazan, a novel potassium-competitive acid blocker (P-CAB), is significantly greater when compared to the effect of PPIs. We investigated the efficacy of vonoprazan treatment for PPI-refractory GERD and factors associated with P-CAB non-response. METHODS: We enrolled 277 GERD patients receiving continuous PPI therapy...
May 13, 2017: Digestion
https://www.readbyqxmd.com/read/28501150/facile-one-pot-fabrication-of-ag-mof-ag-nanocomposites-for-highly-selective-detection-of-2-4-6-trinitrophenol-in-aqueous-phase
#18
Hongxu Guo, Yanhui Zhang, Zishan Zheng, Haibin Lin, Yi Zhang
Ag@MOF(Ag) nano-composites were fabricated through one-pot facile reflux reaction from the raw materials of AgNO3 and 2-aminoterephthalic acid, and were then characterized through SEM, TEM, XRD, XPS, and FTIR, which showed a high fluorescence quantum yield (10.6%) and exhibited outstanding selectivity and excellent sensitivity for 2,4,6-trinitrophenol (TNP) over a concentration range of 1-29μM in water. The fluorescence quenching mechanism may be attributed to hydrogen-bonding interactions and resonance energy transfer...
August 1, 2017: Talanta
https://www.readbyqxmd.com/read/28499339/synthetic-applications-and-mechanistic-studies-of-the-hydroxide-mediated-cleavage-of-carbon-carbon-bonds-in-ketones
#19
Andrea Mazziotta, Ilya S Makarov, Peter Fristrup, Robert Madsen
The hydroxide-mediated cleavage of ketones into alkanes and carboxylic acids has been reinvestigated and the substrate scope extended to benzyl carbonyl compounds. The transformation is performed with a 0.05 M ketone solution in refluxing xylene in the presence of 10 equiv. of potassium hydroxide. The reaction constitutes a straightforward protocol for the synthesis of certain phenyl-substituted carboxylic acids from 2-phenylcycloalkanones. The mechanism was investigated by kinetic experiments which indicated a first order reaction in hydroxide and a full negative charge in the rate-determining step...
May 12, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28488726/prediction-of-renal-cortical-defect-and-scar-using-neutrophil-to-lymphocyte-ratio-in-children-with-febrile-urinary-tract-infection
#20
Jeong Won Lee, Joon Soo Park, Kyeong Bae Park, Gyeong Hee Yoo, Seung Soo Kim, Sang Mi Lee
AIM: This study is aimed to evaluate the predictive value of the neutrophil-to-lymphocyte ratio (NLR) for cortical defect on initial and follow-up Tc-99m dimercaptosuccinic acid (DMSA) scan in children with the first febrile urinary tract infection (UTI). METHODS: We retrospectively enrolled 179 children with the first febrile UTI who underwent DMSA scan and laboratory tests. In patients with abnormal DMSA scan findings, follow-up DMSA scan was performed at least 6 months after the initial scan...
May 10, 2017: Nuklearmedizin. Nuclear Medicine
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