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https://www.readbyqxmd.com/read/28528098/the-cell-wall-compound-of-saccharomyces-cerevisiae-as-a-novel-wall-material-for-encapsulation-of-probiotics
#1
Samira Mokhtari, Seid Mahdi Jafari, Morteza Khomeiri, Yahya Maghsoudlou, Mohammad Ghorbani
Yeast cell wall is known as a food grade ingredient which is recently being used increasingly as a novel coating for encapsulation of different materials in the food industry. This application is limited to core materials smaller than yeast in size. In this study, we have tried to encapsulate larger particles by crushing yeast cells. Hence, probiotic bacteria of Lactobacillus acidophilus and Bifidobacterium bifidum were encapsulated firstly by calcium alginate using the emulsion method and these microbeads were coated again by Saccharomyces cerevisiae cell wall compound and another layer of calcium alginate...
June 2017: Food Research International
https://www.readbyqxmd.com/read/28528002/iron-microencapsulation-in-gum-tragacanth-using-solvent-evaporation-method
#2
Elham Asghari-Varzaneh, Mohammad Shahedi, Hajar Shekarchizadeh
In this study iron salt (FeSO4·7H2O) was microencapsulated in gum tragacanth hydrogel using solvent evaporation method. Three significant parameters (ferrous sulfate content, content of gum tragacanth, and alcohol to mixture ratio) were optimized by response surface methodology to obtain maximum encapsulation efficiency. Ferrous sulfate content, 5%, content of gum tragacanth, 22%, and alcohol to mixture ratio, 11:1 was determined to be the optimum condition to reach maximum encapsulation efficiency. Microstructure of iron microcapsules was thoroughly monitored using scanning electron microscopy (SEM)...
May 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28527897/advanced-glycation-endproducts-form-during-ovalbumin-digestion-in-the-presence-of-fructose-inhibition-by-chlorogenic-acid
#3
Yasmin Bains, Alejandro Gugliucci, Russell Caccavello
BACKGROUND: One mechanism by which fructose could exert deleterious effects is through intestinal formation and absorption of pro-inflammatory advanced glycation endproducts via the Maillard reaction. We employed simulated stomach and duodenum digestion of ovalbumin (OVA) to test the hypothesis that advanced glycation endproducts (AGEs) are formed by fructose during simulated digestion of a ubiquitous food protein under model physiological conditions. METHODS: OVA was subjected to simulated gastric and intestinal digestion using standard models, in presence of fructose or glucose (0-100mM)...
May 17, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28524648/instantaneous-ph-boosted-functionalization-of-stellate-gold-nanoparticles-for-intracellular-imaging-of-mirna
#4
Jisun Ki, Eunji Jang, Seungmin Han, Moo-Kwang Shin, Byunghoon Kang, Yong-Min Huh, Seungjoo Haam
Various types of nanoprobes have recently been utilized to monitor living organisms by detecting and imaging intracellular biomarkers, such as microRNAs (miRs). We here present a simple one-pot method to prepare stellate gold nanoparticles functionalized with miR-detecting molecular beacons (SGNP-MBs); low pH conditions permitted the rapid-high loading of MBs on the surface of SGNPs. Compared to the conventional gold nanoparticle-based MBs, SGNPs carried a 4.5-fold higher load of MBs and exhibited a 6.4-fold higher cellular uptake...
May 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28522905/strategies-used-by-helicobacter-pylori-to-establish-persistent-infection
#5
REVIEW
Amin Talebi Bezmin Abadi
Helicobacter pylori (H. pylori) is a Gram-negative and motile bacterium that colonizes the hostile microniche of the human stomach, then persists for the host's entire life, if not effectively treated. Clinically, H. pylori plays a causative role in the development of a wide spectrum of diseases including chronic active gastritis, peptic ulceration, gastric adenocarcinoma, and gastric mucosa-associated lymphoid tissue lymphoma. Due to the global distribution of H. pylori, it is no exaggeration to conclude that smart strategies are contributing to adaptation of the bacterium to its permanent host...
April 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28522175/pharmacological-inhibition-of-soluble-epoxide-hydrolase-or-genetic-deletion-reduces-diclofenac-induced-gastric-ulcers
#6
Sumanta Kumar Goswami, Amelia Ann Rand, Debin Wan, Jun Yang, Bora Inceoglu, Melany Thomas, Christophe Morisseau, Guang-Yu Yang, Bruce D Hammock
AIMS: This research was conducted to evaluate the hypothesis that gastric ulcers caused by the NSAID diclofenac sodium (DCF) can be prevented by the soluble epoxide hydrolase inhibitor TPPU. MAIN METHODS: Mice were administered a single dose of 10, 30 or 100mg/kg of DCF. Once an ulcerative dose of DCF was chosen, mice were pretreated with TPPU for 7days at 0.1mg/kg to evaluate anti-ulcer effects of the sEH inhibitor on anatomy, histopathology, pH, inflammatory markers and epithelial apoptosis of stomachs...
May 15, 2017: Life Sciences
https://www.readbyqxmd.com/read/28520574/orthotopic-liver-transplantation-changes-the-course-of-gastric-antral-vascular-ectasia-a-case-series-from-a-transplant-center
#7
Chaitanya Allamneni, Basem Alkurdi, Rehan Naseemuddin, Brendan M McGuire, Mohamed G Shoreibah, Devin E Eckhoff, Shajan Peter
BACKGROUND AND AIM: Gastric antral vascular ectasia (GAVE) is an important cause of upper gastrointestinal bleeding and anemia in patients with cirrhosis. The aim of our study was to evaluate the effect of orthotopic liver transplantation (OLT) on GAVE and associated anemia. PATIENTS AND METHODS: We performed a chart review and identified all cirrhotic patients with GAVE who underwent OLT at the University Of Alabama at Birmingham between 2005 and 2013. Population's demographics, etiology of cirrhosis, comorbidities, presentation and treatment modalities of GAVE, endoscopic and histopathologic reports, hemoglobin values before and after transplant, and immunosuppressive regimens were collected...
May 17, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28514652/thymidine-catabolism-as-a-metabolic-strategy-for-cancer-survival
#8
Sho Tabata, Masatatsu Yamamoto, Hisatsugu Goto, Akiyoshi Hirayama, Maki Ohishi, Takuya Kuramoto, Atsushi Mitsuhashi, Ryuji Ikeda, Misako Haraguchi, Kohichi Kawahara, Yoshinari Shinsato, Kentaro Minami, Atsuro Saijo, Masaki Hanibuchi, Yasuhiko Nishioka, Saburo Sone, Hiroyasu Esumi, Masaru Tomita, Tomoyoshi Soga, Tatsuhiko Furukawa, Shin-Ichi Akiyama
Thymidine phosphorylase (TP), a rate-limiting enzyme in thymidine catabolism, plays a pivotal role in tumor progression; however, the mechanisms underlying this role are not fully understood. Here, we found that TP-mediated thymidine catabolism could supply the carbon source in the glycolytic pathway and thus contribute to cell survival under conditions of nutrient deprivation. In TP-expressing cells, thymidine was converted to metabolites, including glucose 6-phosphate, lactate, 5-phospho-α-D-ribose 1-diphosphate, and serine, via the glycolytic pathway both in vitro and in vivo...
May 16, 2017: Cell Reports
https://www.readbyqxmd.com/read/28513755/re-assembled-casein-micelles-improve-in-vitro-bioavailability-of-vitamin-d-in-a-caco-2-cell-model
#9
Yifat Cohen, Moran Levi, Uri Lesmes, Marielle Margier, Emmanuelle Reboul, Yoav D Livney
The pandemic of vitamin D (VD) deficiency, and the global rise in obesity stimulate a need for staple low-fat foods and beverages enriched with VD. In light of consumer demand for a clean label, the use of natural endogenous food ingredients as delivery vehicles is of great interest. To this end, re-assembled casein micelles (rCM) have been shown to help retain VD during processing and shelf life and provide high bioavailability in low-fat milk and non-fat yoghurt. This follow-up study focused on the performance of VD-loaded rCM after drying and reconstitution, considering VD retention during simulated digestion, and the subsequent in vitro bioavailability of the vitamin...
May 17, 2017: Food & Function
https://www.readbyqxmd.com/read/28508274/the-sleeping-remnant-effect-of-roux-en-y-gastric-bypass-on-plasma-levels-of-gastric-biomarkers-in-morbidly-obese-women-a-prospective-longitudinal-study
#10
Federico Marchesi, Francesco Tartamella, Giuseppina De Sario, Clarissa Forlini, Alberta Caleffi, Matteo Riccò, Francesco Di Mario
BACKGROUND: Morpho-functional modifications of the gastric remnant after Roux-en-Y gastric bypass (RYGB) have not been completely defined, due to its inaccessibility for bioptic mapping. The aim of the study is to evaluate such modifications using Gastropanel®, a non-invasive blood test cross-checking four gastric biomarkers, able to provide a snapshot of mucosa conditions. SUBJECTS AND METHODS: Twenty-four women undergoing RYGB were prospectively enrolled. Gastropanel® parameters (pepsinogens, Gastrin-17 and immunoglobulins against Helicobacter pylori), biometrical/clinical data were collected preoperatively and at 6-months follow-up...
May 15, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28508002/postoperative-spontaneous-intussusception-caused-by-a-jejunal-peritoneal-cyst-a-case-report-and-literature-review
#11
Mahir Gachabayov
Postoperative intussusception in adults is an extremely rare clinical entity. Postoperative intussusception caused by a jejunal peritoneal cyst is even rarer. Etiopathogenesis of this clinical condition is not well understood. In the given case it seems to be a complication of prolonged contact of a draining tube with bowel. We present a case of postoperative spontaneous intussusception in a 72-year-old female patient after gastric surgery. The cause of intussusception appeared to be a jejunal peritoneal cyst which is extremely rare...
April 2017: Bulletin of Emergency and Trauma
https://www.readbyqxmd.com/read/28506800/behaviour-of-silver-nanoparticles-in-simulated-saliva-and-gastrointestinal-fluids
#12
Lucie Pinďáková, Věra Kašpárková, Kristina Kejlová, Markéta Dvořáková, Daniel Krsek, Dagmar Jírová, Lucie Kašparová
Continuously increasing application of silver nanoparticles (AgNPs) requires information on their safety and performance under biological conditions. Assessment of AgNPs in biological systems is also related to availability of robust toxicological methods for evaluation of toxic potential of AgNPs and information on their physicochemical state. Silver nanoparticles were subjected to action of simulated saliva, gastric and intestinal fluids, appropriately supplemented with digestive enzymes pepsin or pancreatin...
May 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28501321/the-effect-of-close-postoperative-follow-up-on-co-morbidity-improvement-after-bariatric-surgery
#13
Andrea Schwoerer, Kevin Kasten, Adam Celio, Walter Pories, Konstantinos Spaniolas
BACKGROUND: Patients undergoing gastric bypass (RYGB) surgery require follow-up for efficacy assessment, early detection of postoperative complications, and also for management of co-morbid conditions. Recent literature shows support for improved long-term weight loss with close patient follow-up. However, attrition rates after RYGB have been reported as high as 50%. OBJECTIVE: The objective of this study was to assess the relationship between complete follow-up and improvement or remission of co-morbid conditions at 12 months after surgery...
March 28, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28499200/interactions-of-mussel-inspired-polymeric-nanoparticles-with-gastric-mucin-implications-for-gastro-retentive-drug-delivery
#14
Suhair Sunoqrot, Lina Hasan, Aya Alsadi, Rania Hamed, Ola Tarawneh
Mussel-inspired polydopamine (pD) coatings have several unique characteristics such as durability, versatility, and robustness. In this study, we have designed pD-coated nanoparticles (NPs) of methoxy polyethylene glycol-b-poly(ε-caprolactone) (mPEG-PCL@pD) as prospective nanoscale mucoadhesive platforms for gastro-retentive drug delivery. Successful pD coating on the NPs was confirmed by Transmission Electron Microscopy and X-ray Photoelectron Spectroscopy. Mucoadhesion of pD-coated NPs was investigated in vitro using commercially available mucin under stomach lumen-mimetic conditions...
May 3, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28498998/mechanism-of-human-influenza-virus-rna-persistence-and-virion-survival-in-feces-mucus-protects-virions-from-acid-and-digestive-juices
#15
Ryohei Hirose, Takaaki Nakaya, Yuji Naito, Tomo Daidoji, Yohei Watanabe, Hiroaki Yasuda, Hideyuki Konishi, Yoshito Itoh
Although viral RNA or infectious virions have been detected in the feces of individuals infected with human influenza A/B virus (IAV/IBV), the mechanism of viral survival in the gastrointestinal tract remains unclear. We developed a model that attempts to recapitulate the conditions encountered by a swallowed virus. While IAV/IBV is vulnerable to simulated digestive juices (gastric acid and bile/pancreatic juice), highly viscous mucus protects viral RNA and virions, allowing the virus to retain its infectivity...
May 11, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28496538/iron-pill-gastritis-an-under-diagnosed-condition-with-potentially-serious-outcomes
#16
Tagore Sunkara, Megan E Caughey, Sofia Nigar, Raquel Olivo, Vinaya Gaduputi
Given the ubiquitous use of oral iron therapy, their side effects are often encountered and well recognized in clinical practice. However, iron pill gastritis remains an often under-reported and elusive diagnosis. An astute clinician should be aware of this condition in order to promptly discontinue oral iron and institute timely treatment. Here in, we present a case of a 46-year-old woman who presented to the gastroenterology clinic with vague epigastric pain and microcytic anemia. Esophagogastroduodenoscopy revealed multiple gastric erosions and non-bleeding gastric antral ulcer with biopsies showing excessive iron deposition suggestive of iron pill gastritis...
April 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28494926/gastrokine-mrna-expression-in-gastric-tissue-from-dogs-with-helicobacter-colonisation-but-without-inflammatory-change-during-treatment
#17
M J Sharman, B Bacci, L Santos, C S Mansfield
Gastrokines (GKNs) are bioactive substances secreted by gastric cells. Evidence supports functional roles for GKNs in gastric homeostasis, immune responses and tumour suppression. Down-regulation has been reported in Helicobacter pylori associated gastritis and other inflammatory gastrointestinal conditions in mice and people. The aim of this study was to evaluate GKN gene expression in dogs positive for other Helicobacter spp. both before and after treatment. Expression of Gkn-1 and Gkn-2 mRNA was studied in endoscopic biopsy samples collected from seven healthy dogs over three time-points pre- (T0) and at 1 and 18 weeks post-treatment for Helicobacter spp...
May 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28493103/cellulose-derivatives-enhanced-stability-of-alginate-based-beads-loaded-with-lactobacillus-plantarum-lab12-against-low-ph-high-temperature-and-prolonged-storage
#18
Ismail M Fareez, Siong Meng Lim, Nurul Aida Ashyqin Zulkefli, Rakesh K Mishra, Kalavathy Ramasamy
The susceptibility of probiotics to low pH and high temperature has limited their use as nutraceuticals. In this study, enhanced protection of probiotics via microencapsulation was achieved. Lactobacillus plantarum LAB12 were immobilised within polymeric matrix comprised of alginate (Alg) with supplementation of cellulose derivatives (methylcellulose (MC), sodium carboxymethyl cellulose (NaCMC) or hydroxypropyl methylcellulose (HPMC)). L. plantarum LAB12 encapsulated in Alg-HPMC(1.0) and Alg-MC(1.0) elicited improved survivability (91%) in simulated gastric conditions and facilitated maximal release (∼100%) in simulated intestinal condition...
May 10, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28492183/evaluation-of-sup-13-sup-co-sub-2-sub-enrichment-values-obtained-with-an-oral-breath-test-under-conditions-of-impaired-gastric-functioning-sup-sup
#19
Josef Vogt, Ulrich Wachter, Peter Radermacher, Michael Georgieff, Daniel König, Walter Fabinski, Eberhard Barth
Gastric emptying can be assessed by an oral administration of a <sup>13</sup>C-labeled substrate and its response in the expiratory release of the oxidation product <sup>13</sup>CO<sub>2</sub>. Impaired gut function, reflected e.g. in an intolerance against enteral nutrition may delay or discontinue gastric emptying, potentially leading to multiple peaks in the time profile of expiration. The resulting profile cannot be analyzed by the usual data evaluation that is based on a 'beta-exponential' function (<i>BEX</i>)...
May 11, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28489125/severe-hypoproteinemia-as-a-harbinger-of-m%C3%A3-n%C3%A3-trier-s-disease-in-autoimmune-pancreatitis
#20
Julio Maria Fonseca Chebli, Liliana Andrade Chebli, Tarsila Campanha da Rocha Ribeiro, Pedro Duarte Gaburri
Ménétrier's disease is an extremely rare disease of unknown etiology causing gastric mucosal hypertrophy and protein-losing gastropathy. Rare cases of this condition have been reported in patients with autoimmune diseases. However, to the best of our knowledge, Ménétrier's disease associated with autoimmune pancreatitis (AIP) has never been reported. We described a case of severe hypoproteinemia as a harbinger of Ménétrier's disease associated with AIP. The patient was successfully treated with octreotide and high-protein diet, which led to symptomatic remission and significant improvement in serum levels of albumin and recovery of the nutritional status...
March 2017: Revista da Associação Médica Brasileira
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