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https://www.readbyqxmd.com/read/28203282/the-role-of-dexlansoprazole-modified-release-in-the-management-of-gastroesophageal-reflux-disease
#1
REVIEW
Ronnie Fass, Rosita Frazier
Dexlansoprazole modified-release (MR) is the R-enantiomer of lansoprazole and is currently the only proton-pump inhibitor (PPI) with a novel dual delayed release (DDR) formulation. Overall, dexlansoprazole MR demonstrates a similar safety and side-effect profile as lansoprazole. Dexlansoprazole MR has been shown to be highly efficacious in healing erosive esophagitis, maintaining healed esophageal mucosa in patients with erosive esophagitis and controlling symptoms of patients with nonerosive reflux disease (NERD)...
February 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28197557/doubly-charged-trimeric-cluster-ions-effective-in-mutual-chiral-recognition-of-tadalafil-and-three-proton-pump-inhibitors
#2
Lu Wang, Yunfeng Chai, Wenquan Zhu, Yuanjiang Pan, Cuirong Sun, Su Zeng
Mutual chiral recognition of four stereoisomers of tadalafil and three pairs of enantiomers of proton pump inhibitors (PPIs) including pantoprazole, lansoprazole, and omeprazole, as well as quantitative analysis of enantiomeric excess is achieved on the basis of the competitive fragmentation of doubly charged trimeric Ni(II) cluster ions. Compared with a singly charged trimeric cluster ion, a doubly charged trimeric cluster ion was proved efficient in the recognition of chiral drugs with one or multiple chiral centers, due to its rich fragmentation ions...
February 15, 2017: Analyst
https://www.readbyqxmd.com/read/28159656/influence-of-different-proton-pump-inhibitors-on-the-pharmacokinetics-of-voriconazole
#3
Fang Qi, Liqin Zhu, Na Li, Tingyue Ge, Gaoqi Xu, Shasha Liao
This study aimed to determine the influence of proton pump inhibitors (PPIs) on the pharmacokinetics of voriconazole and to characterise potential drug-drug interactions (DDIs) between voriconazole and various PPIs (omeprazole, esomeprazole, lansoprazole and rabeprazole). Using adjusted physicochemical data and the pharmacokinetic (PK) parameters of voriconazole and PPIs, physiologically based pharmacokinetic (PBPK) models were built and were verified in healthy subjects using GastroPlus(TM) to predict the plasma concentration-time profiles of voriconazole and PPIs...
January 31, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28139495/efficacy-of-proton-pump-inhibitors-for-patients-with-duodenal-ulcers-a-pairwise-and-network-meta-analysis-of-randomized-controlled-trials
#4
REVIEW
Zhan-Hong Hu, Ai-Ming Shi, Duan-Min Hu, Jun-Jie Bao
BACKGROUND/AIM: To compare the efficacy and tolerance of different proton pump inhibitors (PPIs) in different doses for patients with duodenal ulcers. MATERIALS AND METHODS: An electronic database was searched to collect all randomized clinical trials (RCTs), and a pairwise and network meta-analysis were performed. RESULTS: A total of 24 RCTs involving 6188 patients were included. The network meta-analysis showed that there were no significant differences for the 4-week healing rate of duodenal ulcer treated with different PPI regimens except pantoprazle 40 mg/d versus lansoprazole 15 mg/d [Relative risk (RR) = 3...
January 2017: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
https://www.readbyqxmd.com/read/28138748/safety-tolerability-pharmacokinetics-and-pharmacodynamics-of-dexlansoprazole-injection-in-healthy-chinese-subjects
#5
Yue-Qi Li, Zheng-Yu Yan, Hong-Wen Zhang, Lu-Ning Sun, Hui-Wen Jiao, Mei-Feng Wang, Li-Yuan Yu, Lei Yu, Zi-Qing-Yun Yuan, Ling Meng, Yong-Qing Wang
PURPOSE: This study was conducted to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of dexlansoprazole injection in healthy subjects. METHODS: Dexlansoprazole (20-90 mg) or lansoprazole (30 mg) was administrated intravenously to healthy male and female volunteers. All the subjects were sampled for pharmacokinetic (PK) analysis and 64 of them were monitored for 24-h intragastric pH prior to and after administration in the pharmacodynamic (PD) study...
January 31, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28110633/h-k-atpase-inhibition-causes-left-right-aortic-arch-inversion-in-mouse-development
#6
Yukihisa Miyachi
An organ known as a "node" forms during embryogenesis and plays a vital role in determining laterality in vertebrates. However, according to some reports in vertebrates, left-right patterning may be determined long before the node has developed. In this study, we analyzed left-right asymmetry formation in mammals based on ion-signaling factors, which has never been attempted before. First, a proton pump inhibitor was injected into pregnant mice to investigate whether H(+)/K(+)-ATPase is involved in the differentiation of pharyngeal arch arteries during embryonic development...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28088896/formulation-and-optimization-of-lansoprazole-pellets-using-factorial-design-prepared-by-extrusion-spheronization-technique-using-carboxymethyl-tamarind-kernel-powder
#7
Sagar Sopanrao Muley, Tanaji Nandgude, Sushilkumar Poddar
BACKGROUND: In the present study, Lansoprazole pellets were prepared employing a novel excipient Carboxymethyl tamarind kernel powder (CMTKP) using extrusion-spheronization technique. Pellet formulation was optimized for formulation parameters (concentration of microcrystalline cellulose, CMTKP, croscarmellose sodium and isopropyl alcohol). METHODS: Process parameters (speed and duration of spheronization) were optimized using factorial design. The pellets were evaluated for yield, bulk and tapped density, particle size, hardness, drug content, disintegration time and drug release...
January 13, 2017: Recent Patents on Drug Delivery & Formulation
https://www.readbyqxmd.com/read/28039570/different-transcriptional-profiling-between-senescent-and-non-senescent-human-coronary-artery-endothelial-cells-hcaecs-by-omeprazole-and-lansoprazole-treatment
#8
Laura Costarelli, Robertina Giacconi, Marco Malavolta, Andrea Basso, Francesco Piacenza, Mauro Provinciali, Marcello G Maggio, Andrea Corsonello, Fabrizia Lattanzio
Recent evidence suggests that high dose and/or long term use of proton pump inhibitors (PPIs) may increase the risk of adverse cardiovascular events in older patients, but mechanisms underlying these detrimental effects are not known. Taking into account that the senescent endothelial cells have been implicated in the genesis or promotion of age-related cardiovascular disease, we hypothesized an active role of PPIs in senescent cells. The aim of this study is to investigate the changes in gene expression occurring in senescent and non-senescent human coronary artery endothelial cells (HCAECs) following Omeprazole (OPZ) or Lansoprazole (LPZ) treatment...
December 30, 2016: Biogerontology
https://www.readbyqxmd.com/read/27991740/determination-of-rabeprazole-enantiomers-in-dog-plasma-by-supercritical-fluid-chromatography-tandem-mass-spectrometry-and-its-application-to-a-pharmacokinetic-study
#9
Chong Su, Hong Yang, Xiangjun Meng, J Paul Fawcett, Jianming Cao, Yan Yang, Jingkai Gu
Rabeprazole is a novel benzimidazole proton pump inhibitor used for the treatment of gastrointestinal disorders. It is a chiral molecule that gives rise to the possibility of stereoselective pharmacokinetics. To investigate this phenomenon, a rapid and sensitive chiral assay based on supercritical fluid chromatography tandem mass spectrometry was developed and applied to the determination of (R)-rabeprazole and (S)-rabeprazole in dog plasma. Sample preparation involved protein precipitation with acetonitrile after addition of (R)-lansoprazole as internal standard...
December 19, 2016: Journal of Separation Science
https://www.readbyqxmd.com/read/27988924/successful-eradication-therapy-for-helicobacter-pylori-positive-atrophic-gastritis-at-the-sixth-attempt-a-case-report
#10
Ryuzo Deguchi, Koichi Shiraishi, Yoshitaka Arase, Makiko Dekiden, Hideo Shimada, Hiroshi Miyakita, Takashi Ogimi, Kazunori Myojin, Tetsuya Mine
A 74-year-old woman undergoing outpatient follow-up for reflux esophagitis and atrophic gastritis tested positive for Helicobacter pylori and underwent primary eradication therapy with lansoprazole (LPZ) 30 mg, amoxicillin (AMPC) 750 mg, and clarithromycin (CAM) 200 mg twice daily for 1 week in August 2012. A urea breath test (UBT) after this treatment revealed that eradication had failed. Secondary eradication therapy was carried out with esomeprazole (EPZ) 20 mg, AMPC 750 mg, and metronidazole (MNZ) 250 mg twice daily for 1 week, but this also failed...
December 20, 2016: Tokai Journal of Experimental and Clinical Medicine
https://www.readbyqxmd.com/read/27981489/influence-of-low-dose-proton-pump-inhibitors-administered-concomitantly-or-separately-on-the-anti-platelet-function-of-clopidogrel
#11
Takahisa Furuta, Mitsushige Sugimoto, Chise Kodaira, Masafumi Nishino, Mihoko Yamade, Takahiro Uotani, Shu Sahara, Hitomi Ichikawa, Takuma Kagami, Moriya Iwaizumi, Yasushi Hamaya, Satoshi Osawa, Ken Sugimoto, Kazuo Umemura
Proton pump inhibitors (PPIs) at low doses can effectively prevent gastrointestinal bleeding due to aspirin and are widely used in Japan for gastroprotection in patients taking anti-platelet agents. We examined the influence of different PPIs at low doses administered concomitantly or separately on anti-platelet functions of clopidogrel. In 41 healthy Japanese volunteers with different CYP2C19 genotypes who took clopidogrel 75 mg in the morning alone, or with omeprazole 10 mg, esomeprazole 10 mg, lansoprazole 15 mg, or rabeprazole 10 mg, either concomitantly in the morning or separately in the evening, we measured the inhibition of platelet aggregation (IPA, %) using VerifyNow P2Y12 assay at 4 h after the last clopidogrel dose on Day 7 of each regimen...
December 15, 2016: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/27937036/gastroprotective-activity-of-the-resin-from-virola-oleifera
#12
Ana Claudia Hertel Pereira, Dominik Lenz, Breno Valentim Nogueira, Rodrigo Scherer, Tadeu Uggere Andrade, Helber Barcellos da Costa, Wanderson Romão, Thiago Melo Costa Pereira, Denise Coutinho Endringer
CONTEXT: The resin from the trunk wood of Virola oleifera (Schott) A. C. Smith (Myristicaceae) is used in folk medicine to hasten wound repair and to treat pain and inflammatory conditions, and our previous report indicated the anti-oxidative properties in other oxidative stress model. OBJECTIVE: To investigate the protective effects of resin from V. oleifera in two experimental models of gastric ulcer oxidative-stress dependent. MATERIALS AND METHODS: Plant material was collected and the resin was subjected to partitioning with organic solvents...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27926505/antitumor-effect-of-combination-of-the-inhibitors-of-two-new-oncotargets-proton-pumps-and-reverse-transcriptase
#13
Luana Lugini, Ilaria Sciamanna, Cristina Federici, Elisabetta Iessi, Enrico Pierluigi Spugnini, Stefano Fais
Tumor therapy needs new approaches in order to improve efficacy and reduce toxicity of the current treatments. The acidic microenvironment and the expression of high levels of endogenous non-telomerase reverse transcriptase (RT) are common features of malignant tumor cells. The anti-acidic proton pump inhibitor Lansoprazole (LAN) and the non-nucleoside RT inhibitor Efavirenz (EFV) have shown independent antitumor efficacy. LAN has shown to counteract drug tumor resistance. We tested the hypothesis that combination of LAN and EFV may improve the overall antitumor effects...
December 3, 2016: Oncotarget
https://www.readbyqxmd.com/read/27909552/vonoprazan-20-mg-vs-lansoprazole-30-mg-for-endoscopic-submucosal-dissection-induced-gastric-ulcers
#14
Kazuya Takahashi, Yuichi Sato, Junji Kohisa, Jun Watanabe, Hiroki Sato, Kenichi Mizuno, Satoru Hashimoto, Shuji Terai
AIM: To compare the healing effects of vonoprazan and lansoprazole on gastric ulcers induced by endoscopic submucosal dissection (ESD). METHODS: Data were obtained from a total of 26 patients. Fourteen patients were randomized to the vonoprazan group and 12 were randomized to the lansoprazole group. Patients were administered either 20 mg vonoprazan or 30 mg lansoprazole per day after ESD. Endoscopic images just after ESD, on day 8, and on day 28 were used for the evaluation of the shrinking rate of ESD ulcers...
November 16, 2016: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27891632/randomised-clinical-trial-efficacy-and-safety-of-vonoprazan-vs-lansoprazole-in-patients-with-gastric-or-duodenal-ulcers-results-from-two-phase-3-non-inferiority-randomised-controlled-trials
#15
H Miwa, N Uedo, J Watari, Y Mori, Y Sakurai, Y Takanami, A Nishimura, T Tatsumi, N Sakaki
BACKGROUND: Vonoprazan is a new potassium-competitive acid blocker for treatment of acid-related diseases. AIM: To conduct two randomised-controlled trials, to evaluate the non-inferiority of vonoprazan vs. lansoprazole, a proton pump inhibitor, for treatment of gastric ulcer (GU) or duodenal ulcer (DU). METHODS: Patients aged ≥20 years with ≥1 endoscopically-confirmed GU or DU (≥5 mm white coating) were randomised 1:1 using double-dummy blinding to receive lansoprazole (30 mg) or vonoprazan (20 mg) for 8 (GU study) or 6 (DU study) weeks...
January 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27883262/phytochemicals-enhance-antioxidant-enzyme-expression-to-protect-against-nsaid-induced-oxidative-damage-of-the-gastrointestinal-mucosa
#16
REVIEW
Yu-Ting Cheng, Chi-Cheng Lu, Gow-Chin Yen
The gastrointestinal mucosa provides the first protective barrier for digested food and xenobiotics, which are easily attacked by toxic substances. Non-steroidal anti-inflammatory drugs (NSAIDs), including aspirin, diclofenac, indomethacin, and ketoprofen, are widely used in clinical medicine, but these drugs may cause oxidative stress, leading to gastrointestinal damage, such as ulcers. Lansoprazol, omeprazole, and other clinical drugs are widely used to treat duodenal and gastric ulcers and haven been shown to have multiple biological functions, such as antioxidant activity and the ability to upregulate antioxidant enzymes in vivo...
November 24, 2016: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/27875029/decreased-activity-and-genetic-polymorphisms-of-cyp2c19-in-beh%C3%A3-et-s-disease
#17
Mustafa Tugrul Goktas, R Ozgur Karaca, Said Kalkisim, Lokman Cevik, Levent Kilic, Ali Akdogan, Melih O Babaoglu, Atilla Bozkurt, Leif Bertilsson, Umit Yasar
Behçet's disease (BD) is a systemic autoimmune disorder. Cytochrome P450 enzymes (CYPs) are responsible for various drug metabolism reactions as well as those of endogenous substances which may be associated with autoimmune disease susceptibility. Recently, we reported that in patients with BD, CYP2C9 seems to be down-regulated due to inflammation. In the same Turkish BD patients, we investigated whether also CYP2C19 activity is decreased. Lansoprazole (30 mg) was given as a probe drug to evaluate CYP2C19 activity in 59 patients with BD and 27 healthy control volunteers...
November 22, 2016: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/27843960/addition-of-cranberry-to-proton-pump-inhibitor-based-triple-therapy-for-helicobacter-pylori-eradication
#18
Mohammadreza Seyyedmajidi, Anahita Ahmadi, Shahin Hajiebrahimi, Seyedali Seyedmajidi, Majid Rajabikashani, Mona Firoozabadi, Jamshid Vafaeimanesh
OBJECTIVE: Proton pump inhibitor-based triple therapy with two antibiotics for Helicobacter pylori eradication is widely accepted, but this combination fails in a considerable number of cases. Some studies have shown that cranberry inhibits the adhesion of a wide range of microbial pathogens, including H. pylori. The aim of this study was to assess the effect of cranberry on H. pylori eradication with a standard therapy including lansoprazole, clarithromycin, and amoxicillin (LCA) in patients with peptic ulcer disease (PUD)...
October 2016: Journal of Research in Pharmacy Practice
https://www.readbyqxmd.com/read/27810240/gastroprotective-activity-of-synthetic-coumarins-role-of-endogenous-prostaglandins-nitric-oxide-non-protein-sulfhydryls-and-vanilloid-receptors
#19
Beatriz Sepulveda, Cristina Quispe, Mario Simirgiotis, Alfredo Torres-Benítez, Johanna Reyes-Ortíz, Carlos Areche, Olimpo García-Beltrán
Natural or synthetic coumarins showed gastroprotective and antiulcer activity in animal models. In this study, we have synthetized twenty coumarins using classic methods to evaluate their gastroprotective effects on the ethanol/HCl-induced gastric lesion model in mice at 20mg/kg. Among the coumarins synthetized, compounds 6 and 10 showed the greatest gastroprotective activity being as active as lansoprazole at 20mg/kg and reducing gastric lesions by 75 and 76%, respectively. Then, in a second experiment, compounds 6 and 10 were re-evaluated in order to understand the possible mode of gastroprotective activity...
October 22, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27797279/investigation-of-the-bioequivalence-of-two-lansoprazole-formulations-in-healthy-chinese-volunteers-after-a-single-oral-administration
#20
Yuhai Bian, Ming Zhong
The objective of this study was to compare two lansoprazole products (the reference brand enteric-coated capsules and the test generic enteric-coated tablets), and the key pharmacokinetic (PK) parameters for both formulations and their metabolites were assessed. The study used an open-label, randomized two-period crossover design with an 8-day washout period between doses in 24 healthy subjects under fasting conditions. The concentration of lansoprazole and its two metabolites was determined using liquid chromatography-tandem mass spectrometry (LC-MS/MS) method...
October 31, 2016: Artificial Cells, Nanomedicine, and Biotechnology
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