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Gastric conditioning

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https://www.readbyqxmd.com/read/29241109/pharmacokinetic-studies-of-naproxen-amides-of-some-amino-acid-esters-with-promising-colorectal-cancer-chemopreventive-activity
#1
Tarek Aboul-Fadl, Soliman S Al-Hamad, Ehab A Fouad
Naproxen (nap) is belonging to Non-steriodal anti-inflammatory drugs (NSAIDs) group of drugs that characterized by their free carboxylic group. The therapeutic activity of nap is usually accompanied by GI untoward side effects. Recently synthesized naproxen amides of some amino acid esters prodrugs to mask the free carboxylic group were reported. Those prodrugs showed a promising colorectal cancer chemopreventive activity. The current study aims to investigate the fate and hydrolysis of the prodrugs kinetically in different pH conditions, simulated gastric and intestinal fluids with pHs of 1...
December 2, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29238458/bacteriocinogenic-potential-and-virulence-traits-of-enterococcus-faecium-and-e-faecalis-isolated-from-human-milk
#2
Soodabeh Khalkhali, Naheed Mojgani
Background and Objectives: Human milk is a continuous supply of Lactic Acid bacteria (LAB), including enterococci with probiotic potentials. The aim of this study was to analyze two Enterococcus species, isolated from human milk for their probiotic potential, bacteriocin producing ability and virulence traits. Materials and Methods: Enterococcus faecium TA0033 and E. faecalis TA102 were tested for acid and bile tolerance, survival in simulated gastric and intestinal conditions...
August 2017: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/29231944/stability-of-plant-virus-based-nanocarriers-in-gastrointestinal-fluids
#3
Alberto Berardi, David J Evans, Francesca Baldelli Bombelli, George P Lomonossoff
Cowpea mosaic virus (CPMV) is a plant virus which is being extensively investigated as a drug delivery and vaccine nanocarrier for parenteral administration. However, to date little is known about the suitability of plant-based nanocarriers for oral delivery. In this study, the colloidal (i.e. aggregation), physical (i.e. denaturation) and chemical (i.e. digestion of the polypeptides) stability of CPMV and its empty virus-like particles (eVLPs) in conditions resembling the gastrointestinal fluids were evaluated...
December 12, 2017: Nanoscale
https://www.readbyqxmd.com/read/29229727/high-salt-conditions-alter-transcription-of-helicobacter-pylori-genes-encoding-outer-membrane-proteins
#4
John T Loh, Amber C Beckett, Matthew B Scholz, Timothy L Cover
Helicobacter pylori infection and high dietary salt intake are risk factors for the development of gastric adenocarcinoma. One possible mechanism by which a high salt diet could influence gastric cancer risk is by modulating H. pylori gene expression. In this study, we utilized RNA-seq methodology to compare the transcriptional profiles of H. pylori grown in media containing different concentrations of sodium chloride. We identified 118 differentially expressed genes (65 upregulated and 53 downregulated in response to high salt conditions), including multiple members of 14 operons...
December 11, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/29229246/microencapsulation-of-saffron-anthocyanins-using-%C3%AE-glucan-and-%C3%AE-cyclodextrin-nutraceutical-morphological-structural-and-the-release-behavior-of-capsules-during-in-vitro-digestion
#5
Mudasir Ahmad, Bisma Ashraf, Asir Gani, Adil Gani
In the present study, the saffron anthocyanins were encapsulated in β-glucan and β-cyclodextrin by spray drying technique to achieve their stability under adverse gastro-enviromental conditions. The microcapsules were subjected to simulated gastric conditions and release behavior of monomeric anthocyanins, antioxidants and phenols were studied. The structural properties of microcapsules were analyzed by SEM and ATR-FTIR spectroscopy. The particle size distribution, density, color, encapsulation efficiency and powder yield of samples were also evaluated...
December 8, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29227855/a-case-report-of-successful-management-of-clostridium-difficile-colitis-with-antegrade-fidaxomicin-through-a-mucous-fistula-obviating-the-need-for-subtotal-colectomy
#6
Suzanne Arnott, Matthew Skancke, Sheena Chen, Bruce Abell
INTRODUCTION: Clostridium difficile is the most common cause of healthcare-associated infections and can have devastating morbidity and mortality. Traditional treatment algorithms involve intravenous metronidazole and enteric metronidazole or vancomycin. Fidaxomicin (DificidR) targets "switch regions" within RNA polymerases and effectively kills clostridium difficile bacteria and is typically administered orally primarily or through a naso/oro-gastric conduit. PRESENTATION OF CASE: 55-year-old with a recent elective surgical procedure was hospitalized with multifocal pneumonia and subsequently developed clostridium difficile colitis...
November 27, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29219052/adverse-events-of-proton-pump-inhibitors-potential-mechanisms
#7
Andrea Corsonello, Fabrizia Lattanzio, Silvia Bustacchini, Sabrina Garasto, Annalisa Cozza, Roberto Schepisi, Federica Lenci, Filippo Luciani, Marcello Giuseppe Maggio, Andrea Ticinesi, Valeria Butto, Sara Tagliaferri, Francesco Corica
OBJECTIVE: We aimed at summarizing current evidence about mechanisms for potentially harmful effects of proton pump inhibitors (PPIs). METHODS: A Pubmed search was performed, and 207 studies concerning the relationship between use of PPIs and cardiovascular diseases, kidney impairment, nutritional disorders, fractures, infections, functional decline, and mortality were selected and reviewed. RESULTS: PPIs may cause potentially harmful effects by several mechanisms, including endothelial dysfunction, hypomagnesemia, drug interactions, reduced absorption of selected nutrients, increased gastric microbiota and small intestine bacterial overgrowth, reduced immune response, tubular-interstitial inflammation, increased bone turnover, accumulation of amyloid in the brain...
December 7, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/29218088/effect-of-astragaloside-iv-on-diabetic-gastric-mucosa-in-vivo-and-in-vitro
#8
Ningding Wang, Frederick Siu, Yongbin Zhang
This study evaluated the effects of AS-IV on high glucose induced-gastric mucosal lesions compared to the effects of the Bu-zhong-yi-qi pill and the Xiaoke pill, which are already in clinical use. STZ-induced diabetic SD rats were treated with drugs for 12 weeks. Diabetes serum (DS) was used to mimic high glucose conditions in GES-1 cells in vitro at different concentrations and time points. The drugs were set at three concentration gradients for 24, 48 and 72 h before being added to DS-induced GES-1 cells...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29214609/soy-protein-microparticles-for-enhanced-oral-ibuprofen-delivery-preparation-characterization-and-in-vitro-release-evaluation
#9
Maria Antonieta Anaya Castro, Isabelle Alric, Fabien Brouillet, Jérôme Peydecastaing, Sophie Girod Fullana, Vanessa Durrieu
The objective of this work was to evaluate soy protein isolate (SPI) and acylated soy protein (SPA) as spray-drying encapsulation carriers for oral pharmaceutical applications. SPI acylation was performed by the Schotten-Baumann reaction. SPA, with an acylation rate of 41%, displayed a decrease in solubility in acidic conditions, whereas its solubility was unaffected by basic conditions. The drug encapsulation capacities of both SPI and SPA were tested with ibuprofen (IBU) as a model poorly soluble drug. IBU-SPI and IBU-SPA particles were obtained by spray-drying under eco-friendly conditions...
December 6, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/29214514/predictors-of-upstage-diagnosis-after-endoscopic-resection-of-gastric-low-grade-dysplasia
#10
Dae Hwan Kang, Cheol Woong Choi, Hyung Wook Kim, Su Bum Park, Su Jin Kim, Hyeong Seok Nam, Dae Gon Ryu
BACKGROUND: The optimal management of precursor lesions such as gastric low-grade dysplasia is crucial in order to improve gastric cancer-related mortality. However, there are no universally accepted management guidelines regarding which lesions should be resected or should be monitored by follow-up visits. PATIENTS AND METHODS: We retrospectively analyzed data from 1006 gastric low-grade dysplasia lesions that had been resected via endoscopic submucosal dissection...
December 6, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29213286/survival-of-five-strains-of-shiga-toxigenic-escherichia-coli-in-a-sausage-fermentation-model-and-subsequent-sensitivity-to-stress-from-gastric-acid-and-intestinal-fluid
#11
Tone Mari Rode, Anette McLeod, Ingrid Måge, Even Heir, Lars Axelsson, Askild L Holck
The ability of foodborne pathogens to exhibit adaptive responses to stressful conditions in foods may enhance their survival when passing through the gastrointestinal system. We aimed to determine whether Escherichia coli surviving stresses encountered during a model dry-fermented sausage (DFS) production process exhibit enhanced tolerance and survival in an in vitro gastrointestinal model. Salami sausage batters spiked with five E. coli isolates, including enterohaemorrhagic E. coli strains isolated from different DFS outbreaks, were fermented in a model DFS process (20°C, 21 days)...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/29212330/gastric-mucus-and-mucuslike-hydrogels-thin-film-lubricating-properties-at-soft-interfaces
#12
Troels Røn, Navin J Patil, Fatemeh Ajalloueian, Sankaranarayanan Rishikesan, Bruno Zappone, Ioannis S Chronakis, Seunghwan Lee
Mucus is a viscous slime that plays a vital role in protecting and lubricating biological tissues, in particular, soft epithelium interfaces such as in the stomach, intestines, and esophagus. Previous attempts to generate mucus models that mimick or simulate its characteristics have been predominantly focused on the rheological properties. This study investigates both rheological and tribological shear properties of thin films of gastric mucus from a porcine source and its mimics at compliant soft interfaces...
December 5, 2017: Biointerphases
https://www.readbyqxmd.com/read/29211227/resection-of-left-atrial-myxoma-in-a-patient-with-retrosternal-gastric-tube-a-case-report
#13
Pablo Maria Alberto Pomerantzeff, Elinthon Tavares Veronese, Fabrício José Dinato, Fabio Biscegli Jatene
The median sternotomy remains the standard approach in cardiovascular surgery but, in some conditions, it can be considered difficult to perform, especially in patients with history of esophagectomy. This case report describes a successful resection of a left atrial myxoma through a right anterolateral thoracotomy approach in a patient with a previous retrosternal gastric tube reconstruction. The decision for the best surgical approach was made after a heart surgery team discussion. Through this surgical access, a safe and excellent exposure of the left atrium was possible, and a complete resection of the myxoma was performed without any injury to the gastric tube...
September 2017: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29206813/a-randomized-double-blind-placebo-controlled-cross-over-study-using-baclofen-in-the-treatment-of-rumination-syndrome
#14
Ans Pauwels, Charlotte Broers, Brecht Van Houtte, Nathalie Rommel, Tim Vanuytsel, Jan Tack
OBJECTIVES: Both rumination syndrome and supra-gastric belching (SGB) have limited treatment options. We demonstrated (open-label) that baclofen reduces pressure flow events in these patients. We aimed to study the effect of baclofen in a placebo-controlled, double-blind, cross-over study in patients with clinically suspected rumination and/or SGB. METHODS: Twenty tertiary-care patients (mean age 42 years (range 18-61), 13f) with clinically suspected rumination and/or SGB were randomized to receive baclofen (10 mg, t...
December 5, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/29205321/conditional-survival-of-patients-with-gastric-cancer-who-undergo-curative-resection-a-multi-institutional-analysis-in-china
#15
Pengliang Wang, Zhe Sun, Wei Wang, Jingyu Deng, Zhenning Wang, Han Liang, Zhiwei Zhou, Huimian Xu
BACKGROUND: Conditional survival estimates, which take into consideration the changing risk with increasing survival time, provide a dynamic survival probability and more accurate survival information for clinician decision making. The objective of the current study was to evaluate the conditional disease-specific survival (DSS) for patients with gastric cancer who underwent curative surgery in China. METHODS: In total, 7658 patients with gastric cancer from a multi-institutional cohort in China were included in the analyses...
December 4, 2017: Cancer
https://www.readbyqxmd.com/read/29204186/percutaneous-transesophageal-gastro-tubing-pteg-as-an-alternative-long-term-tube-feeding-procedure-when-gastrostomy-is-not-feasible
#16
Ezekiel Wong Toh Yoon, Kazuki Nishihara
Background: Percutaneous transesophageal gastro-tubing (PTEG) is a minimally invasive technique to access the gut via an esophagostomy. However, this procedure is not well known and the literature available is still fairly limited. This observational study was conducted to evaluate our experience using this method as an alternative long-term tube feeding procedure when gastrostomy is not suitable. Methods: A total of 15 patients (10 males and 5 females) who underwent PTEG at our institution from 2012 to 2016 were observed and analyzed in this study...
December 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/29203127/-green-smoothie-cleanse-causing-acute-oxalate-nephropathy
#17
Swetha Makkapati, Vivette D D'Agati, Leah Balsam
Oxalate nephropathy is an uncommon condition that causes acute kidney injury with the potential for progression to end-stage renal disease. Diagnosis is based on the kidney biopsy findings of abundant polarizable calcium oxalate crystals in the epithelium and lumen of renal tubules. We report a case of acute oxalate nephropathy in a 65-year-old woman, temporally associated with the consumption of an oxalate-rich green smoothie juice "cleanse" prepared from juicing oxalate-rich green leafy vegetables and fruits...
December 1, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29201871/calcitonin-gene-related-peptide-neuroendocrine-communication-between-the-pancreas-gut-and-brain-in-regulation-of-blood-glucose
#18
Sayali A Pendharkar, Monika Walia, Marie Drury, Maxim S Petrov
Background: Calcitonin gene-related peptide (CGRP), a ubiquitous neuropeptide, plays a diverse and intricate role in chronic low-grade inflammation, including conditions such as obesity, type 2 diabetes, and diabetes of the exocrine pancreas. Diabetes of exocrine pancreas is characterised by chronic hyperglycemia and is associated with persistent low-grade inflammation and altered secretion of certain pancreatic and gut hormones. While CGRP may regulate glucose homeostasis and the secretion of pancreatic and gut hormones, its role in chronic hyperglycemia after acute pancreatitis (CHAP) is not known...
November 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29199594/dna-double-strand-breaks-caused-by-different-microorganisms-a-special-focus-on-helicobacter-pylori
#19
Pinar Erkekoglu, Didem Oral, Belmar Kocer-Gumusel, Ming-Wei Chao
The association between inflammation and cancer has long been recognized. Several studies have found that different types of tumors develop at sites of chronic inflammation. It is stated that over 15%-20% of malignancies worldwide can be related to infections caused by viruses, bacteria, and schistosomes. Inflammatory conditions are characterized by overexpression of inducible nitric oxide synthase (iNOS) and overproduction of nitric oxide/reactive nitrogen species (ROSs/RNSs) in epithelial cells. Reactive oxygen species (ROSs) may also lead to cellular alterations and eventually to inflammation...
2017: Journal of Environmental Pathology, Toxicology and Oncology
https://www.readbyqxmd.com/read/29198172/ethanol-effect-on-acid-resistance-of-selected-enteric-polymers
#20
Nizar Al-Zoubi, Ahmad Al-Rusasi, Al-Sayed Sallam
The aim of this study was to investigate under in vitro conditions the influence of ethanol on acid resistance of four commercially-available enteric polymers (Acryl-EZE®, AQOAT®, Hypromellose phthalate and Sureteric®). For this purpose, custom-prepared paracetamol tablets were coated with the enteric polymers and tested for release using the buffer-addition method. Ten different hydro-ethanolic media were used in the acid stage corresponding to five levels of ethanol (0, 5, 10, 20 and 40% v/v) in two acidic solutions representing low and high gastric pH (0...
December 4, 2017: Pharmaceutical Development and Technology
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