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https://www.readbyqxmd.com/read/28651024/short-term-proton-pump-inhibitor-treatment-may-cause-hypomagnesaemia-in-critically-ill-patients-a-pilot-study
#1
Łukasz J Krzych, Piotr Łój, Teresa Nowak, Wojciech Kazura, Piotr Knapik
Many studies have suggested a link between long-term PPI treatment and hypomagnesaemia, though none of them investigated the short-term exposure in high-risk patients. We sought to investigate this issue in 90 critically ill patients. We assessed serum Mg concentrations, necessity of Mg supplementation, PPI dose, duration of PPI therapy and route of administration. In multiple analysis we found that Mg supplementation (positive effect/p=0.03) and enteral route of PPI administration (negative effect/p=0.02) had significant impact on Mg concentration...
June 24, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28649076/renal-clearance-and-urinary-excretion-of-omeprazole-in-healthy-female-volunteers-in-pakistan
#2
Nazia Qadir, Tanweer Khaliq, Rai Altaf Hussain, Ghulam Abbas Shah, Sadia Asharaf, Ahmad Raza, Nadia Noor
Omeprazole is a widely prescribed proton pump inhibitor to treat various gastric acid hyper secretion disorders. The present study was designed to evaluate the renal clearance and urinary excretion of omeprazole in eight healthy female volunteers to increase the understanding of the contributing factors such as demographics variability in the renal clearance and urinary excretion of omeprazole under indigenous conditions. The urine and blood samples were collected 0.5, 1, 1.5, 2, 3, 4, 6, 8 hours after oral administration of enteric coated omeprazole (20 mg) and drug concentration in the samples was determined by High Performance Liquid Chromatography (HPLC) with C18 column and UV detector...
March 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28648501/depolarized-gabaergic-signaling-in-subicular-microcircuits-mediates-generalized-seizure-in-temporal-lobe-epilepsy
#3
Yi Wang, Cenglin Xu, Zhenghao Xu, Caihong Ji, Jiao Liang, Ying Wang, Bin Chen, Xiaohua Wu, Feng Gao, Shuang Wang, Yi Guo, Xiaoming Li, Jianhong Luo, Shumin Duan, Zhong Chen
Secondary generalized seizure (sGS) is a major source of disability in temporal lobe epilepsy (TLE) with unclear cellular/circuit mechanisms. Here we found that clinical TLE patients with sGS showed reduced volume specifically in the subiculum compared with those without sGS. Further, using optogenetics and extracellular electrophysiological recording in mouse models, we found that photoactivation of subicular GABAergic neurons retarded sGS acquisition by inhibiting the firing of pyramidal neurons. Once sGS had been stably acquired, photoactivation of GABAergic neurons aggravated sGS expression via depolarized GABAergic signaling...
June 14, 2017: Neuron
https://www.readbyqxmd.com/read/28646925/stress-ulcer-prophylaxis-versus-placebo-or-no-prophylaxis-in-adult-hospitalised-acutely-ill-patients-protocol-for-a-systematic-review-with-meta-analysis-and-trial-sequential-analysis
#4
Søren Marker, Anders Perner, Jørn Wetterslev, Marija Barbateskovic, Janus Christian Jakobsen, Mette Krag, Anders Granholm, Carl Thomas Anthon, Morten Hylander Møller
BACKGROUND: Stress ulcer prophylaxis is considered standard of care in many critically ill patients in the intensive care unit (ICU). However, the quality of evidence supporting this has recently been questioned, and clinical equipoise exists. Whether there is overall benefit or harm of stress ulcer prophylaxis in adult hospitalised acutely ill patients is unknown. Accordingly, we aim to assess patient-important benefits and harms of stress ulcer prophylaxis versus placebo or no treatment in adult hospitalised acutely ill patients with high risk of gastrointestinal bleeding irrespective of hospital setting...
June 24, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28645482/proton-pump-inhibitors-and-survival-outcomes-in-patients-with-metastatic-renal-cell-carcinoma
#5
Aly-Khan A Lalani, Rana R McKay, Xun Lin, Ronit Simantov, Marina D Kaymakcalan, Toni K Choueiri
INTRODUCTION: Proton pump inhibitors (PPIs) are potent inhibitors of gastric acid secretion and can affect the optimal absorption of concomitant oral medications, such as vascular endothelial growth factor (VEGF) tyrosine kinase inhibitors (TKIs). The purpose of this study was to investigate the effect of PPI use on survival in metastatic renal cell carcinoma (mRCC) patients treated in the targeted therapy era. MATERIALS AND METHODS: We conducted a pooled analysis of mRCC patients treated in phase II and III clinical trials...
May 31, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28644315/management-of-eosinophilic-esophagitis-based-on-pathophysiological-evidence
#6
Bram D van Rhijn, Albert J Bredenoord
Over the past decades eosinophilic esophagitis (EoE) has been increasingly diagnosed, and significant progress has been made in our understanding of its pathophysiology. As EoE cannot be cured yet, treatment goals are suppression of disease activity and symptoms as well as the prevention of progression to a more severe disease phenotype. Disease-modifying treatment options can be divided into dietary therapy and immunosuppressive medications, of which topical steroids have been most investigated, yet are still prescribed off-label...
June 21, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28644310/predictors-of-mortality-in-cirrhosis-inpatients-with-clostridium-difficile-infection
#7
Elliot Z Smith, Patrick G Northup, Curtis K Argo
BACKGROUND: Clostridium difficile is a bacterial pathogen associated with significant morbidity and mortality in patients with cirrhosis. GOALS: Our primary aim is to identify variables that are predictive of poor outcomes in cirrhosis patients with C. difficile infection (CDI). We also aim to further characterize the risk factors for developing CDI and risk of mortality in this patient population. STUDY: A total of 200 subjects with a diagnosis of cirrhosis and CDI were matched to 200 cirrhosis inpatients without CDI...
June 21, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28642210/rationale-and-design-for-a-randomized-comparison-of-efficacy-and-safety-between-aspirin-and-clopidogrel-in-atrial-fibrillation-patients-with-low-stroke-risk-cesac-af-trial
#8
Sang Min Park, Haemin Jeong, Mi-Hyang Jung, Kyung Soon Hong, Myeong-Ki Hong, Chang Seok Bang, Christopher Y Kim
BACKGROUND: Atrial fibrillation (AF) increases the risk of thromboembolic stroke. An oral anticoagulant should be administrated to prevent stroke in patients with moderate stroke risk (ie, CHA2DS2-VASc score>2). If the stroke risk is low (i.e. the score=1), however, antiplatelet agent such as aspirin is widely used. Aspirin can cause peptic ulcer disease (PUD) while its alternative, clopidogrel, theoretically does not. OBJECTIVE: To elucidate the efficacy and safety between aspirin and clopidogrel, a multicenter randomized controlled trial was designed in AF patients with low stroke risk...
June 19, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28641289/impact-of-comorbid-irritable-bowel-syndrome-on-treatment-outcome-in-non-erosive-reflux-disease-on-long-term-proton-pump-inhibitor-in-japan
#9
Yasushi Funaki, Hiroshi Kaneko, Yurika Kawamura, Takashi Yoshimine, Yasuhiro Tamura, Shinya Izawa, Masahide Ebi, Naotaka Ogasawara, Makoto Sasaki, Kunio Kasugai
BACKGROUND/AIMS: Irritable bowel syndrome (IBS) frequently coexists with non-erosive reflux disease (NERD). Efficacy of long-term proton pump inhibitor (PPI) treatment on NERD with or without IBS is controversial. The impact of comorbid IBS in NERD on quality of life (QOL) remains uncertain. We verified the hypothesis that NERD patients with IBS symptoms demonstrated poor responses to long-term PPI treatments, deteriorated QOL, and high frequency of psychological deviations in Japan. METHODS: In all, 141 NERD patients who had been taking PPIs for more than 6 months were enrolled and analyzed...
June 23, 2017: Digestion
https://www.readbyqxmd.com/read/28638276/gastric-juice-based-real-time-pcr-for-tailored-helicobacter-pylori-treatment-a-practical-approach
#10
Xianhui Peng, Zhiqiang Song, Lihua He, Sanren Lin, Yanan Gong, Lu Sun, Fei Zhao, Yixin Gu, Yuanhai You, Liya Zhou, Jianzhong Zhang
A gastric juice-based real-time polymerase chain reaction (PCR) assay was established to identify Helicobacter pylori infection, clarithromycin susceptibility and human CYP2C19 genotypes and to guide the choice of proton pump inhibitor (PPI), clarithromycin and amoxicillin treatment for tailored H. pylori eradication therapy. From January 2013 to November 2014, 178 consecutive dyspeptic patients were enrolled for collection of gastric biopsy samples and gastric juice by endoscopy at the Peking University Third Hospital; 105 and 73 H...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28636554/proton-pump-inhibitors-increase-the-chemosensitivity-of-patients-with-advanced-colorectal-cancer
#11
Xiaoyu Wang, Chun Liu, Jiaqi Wang, Yue Fan, Zhenghua Wang, Yuanyuan Wang
Changes in pH can alter the uptake of chemotherapy drugs. Proton pump inhibitors (PPIs) may therefore increase the chemosensitivity of cancer cells and cytotoxicity of chemotherapeutic drugs by increasing their uptake. We investigated the chemosensitizing potential of PPIs in colorectal cancer (CRC). Our in vitro data show that the PPI pantoprazole increases the chemosensitivity of CRC HT29 and RKO cells to fluorouracil (5-FU). Our in vivo data demonstrate that pantoprazole also increases the ability of 5-FU to inhibit CRC tumor growth in mice...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28634030/effects-of-membrane-curvature-and-ph-on-proton-pumping-activity-of-single-cytochrome-bo3-enzymes
#12
Mengqiu Li, Sanobar Khan, Honglin Rong, Roman Tuma, Nikos S Hatzakis, Lars J C Jeuken
The molecular mechanism of proton pumping by heme-copper oxidases (HCO) has intrigued the scientific community since it was first proposed. We have recently reported a novel technology that enables the continuous characterisation of proton transport activity of a HCO and ubiquinol oxidase from Escherichia coli, cytochrome bo3, for hundreds of seconds on the single enzyme level (Li et al. J Am Chem Soc 137 (2015) 16055-16063). Here, we have extended these studies by additional experiments and analyses of the proton transfer rate as a function of proteoliposome size and pH at the N- and P-side of single HCOs...
June 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28632255/intake-of-proton-pump-inhibitors-is-associated-with-an-increased-risk-of-dental-implant-failure
#13
Bruno Ramos Chrcanovic, Jenö Kisch, Tomas Albrektsson, Ann Wennerberg
PURPOSE: To investigate the association between the intake of proton pump inhibitors (PPIs) and the risk of dental implant failure. MATERIALS AND METHODS: The present retrospective cohort study is based on patients consecutively treated between 1980 and 2014 with implant-supported/retained prostheses at one specialist clinic. Modern endosseous dental implants with cylindrical or conical design were included, and only complete cases were considered; ie, only those implants with information available for all variables measured were included in the regression model analysis...
June 20, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28632190/soluble-pro-renin-receptor-and-obstructive-sleep-apnea-syndrome-oxidative-stress-in-brain
#14
REVIEW
Kazuhiro Takahashi, Koji Ohba, Kazuki Tajima, Tsuguo Nishijima, Shigeru Sakurai
(Pro)renin receptor ((P)RR) is a multi-functional molecule that is related to both the renin-angiotensin system (RAS) and vacuolar H⁺-ATPase (v-ATPase), an ATP-dependent multi-subunit proton pump. Soluble (P)RR (s(P)RR), which consists of the extracellular domain of (P)RR, is present in blood and urine. Elevated plasma s(P)RR concentrations are reported in patients with chronic kidney disease and pregnant women with hypertension or diabetes mellitus. In addition, we have shown that plasma s(P)RR concentrations are elevated in patients with obstructive sleep apnea syndrome (OSAS)...
June 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28631728/acg-and-cag-clinical-guideline-management-of-dyspepsia
#15
Paul M Moayyedi, Brian E Lacy, Christopher N Andrews, Robert A Enns, Colin W Howden, Nimish Vakil
We have updated both the American College of Gastroenterology (ACG) and the Canadian Association of Gastroenterology (CAG) guidelines on dyspepsia in a joint ACG/CAG dyspepsia guideline. We suggest that patients ≥60 years of age presenting with dyspepsia are investigated with upper gastrointestinal endoscopy to exclude organic pathology. This is a conditional recommendation and patients at higher risk of malignancy (such as spending their childhood in a high risk gastric cancer country or having a positive family history) could be offered an endoscopy at a younger age...
June 20, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28630812/molecular-properties-of-a-dtd-channelrhodopsin-from-guillardia-theta
#16
Yumeka Yamauchi, Masae Konno, Shota Ito, Satoshi P Tsunoda, Keiichi Inoue, Hideki Kandori
Microbial rhodopsins are membrane proteins found widely in archaea, eubacteria and eukaryotes (fungal and algal species). They have various functions, such as light-driven ion pumps, light-gated ion channels, light sensors and light-activated enzymes. A light-driven proton pump bacteriorhodopsin (BR) contains a DTD motif at positions 85, 89, and 96, which is unique to archaeal proton pumps. Recently, channelrhodopsins (ChRs) containing the DTD motif, whose sequential identity is ~20% similar to BR and to cation ChRs in Chlamydomonas reinhardtii (CrCCRs), were found...
2017: Biophysics and Physicobiology
https://www.readbyqxmd.com/read/28629736/kfp-h008-blocks-gastric-acid-secretion-through-inhibiting-h-k-atpase
#17
Cheng-Yuan Li, Mei Su, Yun-Yi Yan, Lin Zhou, Lu-Yao Ao, Wei-Rong Fang, Yun-Man Li
1-(5-(1H-indol-5-yl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrol-3-yl)-N-methylmethanamine (KFP-H008),a novel and potent potassium-competitive acid blocker for the treatment of acid secretion related diseases, has not been reported previously. In this study, we demonstrated that KFP-H008 inhibits basal acid secretion, 2-deoxy-D-glucose- (2DG-) stimulated gastric acid secretion in rats. KFP-H008 blocked histamine-stimulated acid secretion in rats and heidenhain pouch dogs and reversed acid output in isolated gastric perfusion under histamine stimulation...
June 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28628496/proton-pump-inhibitor-and-selective-serotonin-reuptake-inhibitor-therapy-for-the-management-of-noncardiac-chest-pain
#18
Nikos Viazis, Konstantina Katopodi, George Karamanolis, Konstantinos Denaxas, Lazaros Varytimiadis, Michail Galanopoulos, Emmanouela Tsoukali, Dimitirs Kamberoglou, Angeliki Christidou, Dimitrios G Karamanolis, George Papatheodoridis, Gerasimos J Mantzaris
INTRODUCTION: Although gastroesophageal reflux disease is the main cause of noncardiac chest pain (NCCP), proton pump inhibitors (PPIs) benefit a minority of patients. Our prospective study evaluated the effect of PPI and selective serotonin reuptake inhibitors on the different subtypes of NCCP characterized by impedance-pH monitoring. METHODS: All NCCP patients underwent impedance-pH monitoring and on the basis of the results, those with abnormal distal esophageal acid exposure received PPIs twice daily (group A), those with a positive symptom index for chest pain received citalopram 20 mg and PPI once daily (group B), and those with a negative symptom index for chest pain received citalopram 20 mg once daily (group C)...
June 16, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28624580/proton-pump-inhibitors-decrease-phlebotomy-need-in-hfe-hemochromatosis-double-blind-randomized-placebo-controlled-trial
#19
Annick Vanclooster, Cees van Deursen, Reggy Jaspers, David Cassiman, Ger Koek
No abstract text is available yet for this article.
June 14, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28623874/lansoprazole-sulphide-pharmacokinetics-of-this-promising-anti-tuberculous-agent
#20
Sipho Mdanda, Sooraj Baijnath, Adeola Shobo, Sanil D Singh, Glenn E M Maguire, Hendrik G Kruger, Per I Arvidsson, Tricia Naicker, Thavendran Govender
Lansoprazole (LPZ) is a commercially available proton-pump inhibitor (PPI) whose primary metabolite, lansoprazole sulphide (LPZS) was recently reported to have in vitro and in vivo activity against M. tb. It was also reported that a 300 mg kg(-1) oral administration of LPZS was necessary to reach therapeutic levels in the lung, with the equivalent human dose being unrealistic. A validated liquid chromatography-tandem mass spectrometric method (LC-MS/MS) for the simultaneous quantification LPZ and LPZS in rat plasma and lung homogenates, was developed...
June 17, 2017: Biomedical Chromatography: BMC
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