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https://www.readbyqxmd.com/read/28910527/comparative-structural-characterization-of-spiral-dextrin-inclusion-complexes-with-vitamin-e-or-soy-isoflavone
#1
Ping-Ping Wang, Xin-Sheng Qin, Qing-Yu Yang, Zhigang Luo, Zhi-Gang Xiao, Xichun Peng
In this study, the preparation and structural properties of spiral dextrin (SD)/vitamin E and SD/soy isoflavone inclusion complexes were studied. SD was obtained from debranched normal maize starch using isoamylases. After fractionation using a novel method of gradient ethanol precipitation, SD was separated into different fractions, among which SD-40 was found to be the optimal host molecule to prepare spiral dextrin inclusion complexes with vitamin E or soy isoflavone. The XRD and 13C CP/MAS NMR suggested that the crystalline structures of SD-40/vitamin E and SD-40/soy isoflavone were V6II and V6III types, respectively...
September 14, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28891340/do-model-polymer-therapeutics-sufficiently-diffuse-through-articular-cartilage-to-be-a-viable-therapeutic-route
#2
Alison Powell, Bruce Caterson, Clare Hughes, Alison Paul, Craig James, Stephen Hopkins, Omar Mansour, Peter Griffiths
The ability of a polymer therapeutic to access the appropriate subcellular location is crucial to its efficacy, and is defined to a large part by the many and complex cellular biological and biochemical barriers such a construct must traverse. It is shown here that model dextrin conjugates are able to pass through a cartilaginous extracellular matrix into chondrocytes, with little perturbation of the matrix structure, indicating that targeting of potential therapeutics through a cartilaginous extracellular matrix should prove possible...
September 11, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28878590/enzymatically-modified-isoquercitrin-supplementation-intensifies-plantaris-muscle-fiber-hypertrophy-in-functionally-overloaded-mice
#3
Akiko Kohara, Masanao Machida, Yuko Setoguchi, Ryouichi Ito, Masanori Sugitani, Hiroko Maruki-Uchida, Hiroyuki Inagaki, Tatsuhiko Ito, Naomi Omi, Tohru Takemasa
BACKGROUND: Enzymatically modified isoquercitrin (EMIQ) is produced from rutin using enzymatic hydrolysis followed by treatment with glycosyltransferase in the presence of dextrin to add glucose residues. EMIQ is absorbed in the same way as quercetin, a powerful antioxidant reported to prevent disused muscle atrophy by targeting mitochondria and to have ergogenic effects. The present study investigated the effect of EMIQ on skeletal muscle hypertrophy induced by functional overload. METHODS: In Study 1, 6-week-old ICR male mice were divided into 4 groups: sham-operated control, sham-operated EMIQ, overload-operated control, and overload-operated EMIQ groups...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28873623/waxy-flour-degradation-impact-of-screw-geometry-and-specific-mechanical-energy-in-a-co-rotating-twin-screw-extruder
#4
Ryan J Kowalski, Jacob P Hause, Helen Joyner Melito, Girish M Ganjyal
Dextrinization of starch using extrusion processing is crucial to the quality of direct expanded products. To determine the extent of dextrinization, flour samples were extracted from a twin-screw extruder that had been brought to a sudden stop and molecular weights were determined by intrinsic viscosity. The screw profile and moisture feed content had the most significant impact on molecular weight reduction, reducing intrinsic viscosity from 1.75 to 0.70dL/g at the most. The breakdown, as shown by a reduction in intrinsic viscosity, had a strong negative correlation (r=-0...
January 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28823059/influence-of-dextrins-on-the-production-of-spiramycin-and-impurity-components-by-streptomyces-ambofaciens
#5
Kaiya Yao, Shuhong Gao, Yanjie Wu, Zhen Zhao, Wen Wang, Quangui Mao
Spiramycin is a 16-membered macrolide antibiotic produced by Streptomyces ambofaciens and used in human medicine for the treatment of various respiratory tract and genital infections. Several impurities were detected in spiramycin-fermentation broth, especially impurities D and F, which decreased the separation-extraction yield and increased production cost. Dextrins, as the main carbon source, influence the accumulation of spiramycin and impurities. In this work, two types of dextrin from vendor Y and Z were compared to study their influences on spiramycin production...
August 19, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28745083/elemental-diet-accelerates-the-recovery-from-oral-mucositis-and-dermatitis-induced-by-5-fluorouracil-through-the-induction-of-fibroblast-growth-factor-2
#6
Koji Harada, Tarannum Ferdous, Hiroaki Kobayashi, Yoshiya Ueyama
Mucositis and dermatitis induced by anticancer agents are common complications of anticancer therapies. In this study, we evaluated the efficacy of Elental (Ajinomoto Pharmaceutical Ltd, Tokyo, Japan), an elemental diet with glutamine in the treatment of 5-fluorouracil (5-FU)-induced oral mucositis and dermatitis in vivo and tried to clarify the underlying mechanisms of its action. Oral mucositis and dermatitis was induced through a combination of 5-FU treatment and mild abrasion of the cheek pouch in hamsters and the dorsal skin in nude mice respectively...
July 1, 2017: Integrative Cancer Therapies
https://www.readbyqxmd.com/read/28736269/iodine-lithium-alpha-dextrin-il%C3%AE-d-against-staphylococcus-aureus-skin-infections-a-comparative-study-of-in-vitro-bactericidal-activity-and-cytotoxicity-between-il%C3%AE-d-and-povidone-iodine
#7
A P Zisi, M K Exindari, E K Siska, G G Koliakos
BACKGROUND: As antimicrobial resistance continues to increase, revisiting old antimicrobial agents, modified to enhance efficacy and safety, becomes important. Iodine has been widely used for more than 150 years as a wound and skin disinfectant; it is an effective broad range bactericide and does not promote the development of resistant strains. The most important iodine-based agent is povidone-iodine (PVP-I) which provides excellent antibacterial activity. However, its safety profile has been questioned...
July 20, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28735452/characterization-of-polymeric-substance-classes-in-cereal-based-beverages-using-asymmetrical-flow-field-flow-fractionation-with-a-multi-detection-system
#8
Georg Krebs, Thomas Becker, Martina Gastl
Cereal-based beverages contain a complex mixture of various polymeric macromolecules including polysaccharides, peptides, and polyphenols. The molar mass of polymers and their degradation products affect different technological and especially sensory parameters of beverages. Asymmetrical flow field-flow fractionation (AF4) coupled with multi-angle light scattering (MALS) and refractive index detection (dRI) or UV detection (UV) is a technique for structure and molar mass distribution analysis of macromolecules commonly used for pure compound solutions...
July 22, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28728446/hpma-copolymer-phospholipase-c-and-dextrin-phospholipase-a2-as-model-triggers-for-polymer-enzyme-liposome-therapy-pelt
#9
Elaine L Ferguson, Anna Scomparin, Hanna Hailu, Ronit Satchi-Fainaro
'Polymer Enzyme Liposome Therapy' (PELT) is a two-step anticancer approach in which a liposomal drug and polymer-phospholipase conjugate are administered sequentially to target the tumour interstitium by the enhanced permeability and retention effect, and trigger rapid, local, drug release. To date, however, the concept has only been described theoretically. We synthesised two polymer conjugates of phospholipase C (PLC) and A2 (PLA2) and evaluated their ability to trigger anthracycline release from the clinically-used liposomes, Caelyx® and DaunoXome(®)...
July 21, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28722160/placental-proteomics-reveal-insights-into-fetal-alcohol-spectrum-disorders
#10
Katie L Davis-Anderson, Sebastian Berger, Emilie R Lunde-Young, Vishal D Naik, Heewon Seo, Greg A Johnson, Hanno Steen, Jayanth Ramadoss
BACKGROUND: Fetal alcohol spectrum disorders (FASD) describe many of the well-known neurodevelopmental deficits afflicting children exposed to alcohol in utero. The effects of alcohol on the maternal-fetal interface, especially the placenta, have been less explored. We herein hypothesized that chronic binge alcohol exposure during pregnancy significantly alters the placental protein profile in a rat FASD model. METHODS: Pregnant rats were orogastrically treated daily with alcohol (4...
September 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28687507/gastroprotective-actions-of-taraxacum-coreanum-nakai-water-extracts-in-ethanol-induced-rat-models-of-acute-and-chronic-gastritis
#11
Hye Jeong Yang, Min Jung Kim, Dae Young Kwon, Eun Seon Kang, Suna Kang, Sunmin Park
ETHNOPHARMACOLOGICAL RELEVANCE: Taraxacum coreanum Nakai has been traditionally used for treating inflammatory diseases including gastrointestinal diseases. AIM OF THE STUDY: We studied whether water extracts of Taraxacum coreanum Nakai (TCN) had a protective effect on acute and chronic gastritis induced by ethanol/HCl in an animal model of gastritis and its mechanism was also explored. MATERIALS AND METHODS: In the acute study, rats were orally administered 0...
July 5, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28669666/a-randomized-controlled-trial-on-the-efficacy-of-resistant-dextrin-as-functional-food-in-women-with-type-2-diabetes-targeting-the-hypothalamic-pituitary-adrenal-axis-and-immune-system
#12
Mahdieh Abbasalizad Farhangi, Ahmad Zare Javid, Bahareh Sarmadi, Poran Karimi, Parvin Dehghan
OBJECTIVE: The aim of this trial was to determine the efficacy of a resistant dextrin on immune-mediated inflammation and hypothalamic-pituitary-adrenal axis in women with type 2 diabetes mellitus (T2DM). METHODS: Females (n = 55) with T2DM were randomly allocated into intervention group (n = 30) and control group (n = 25), in which they received 10 g/d of Nutriose(®)06 (a resistant dextrin) or maltodextrin for 8 weeks, respectively. Fasting blood samples were taken to measure immune system related parameters like white blood cell count, CD4, CD8, interferon-γ (IFNγ), interleukins (IL12, IL4, IL10), cortisol, tryptophan (TRP), ACTH (Adrenocorticotropic hormone), Kynurenine (KYN) and plasma lipopolysaccharide (LPS) at the beginning and end of trial...
June 10, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28648523/functional-characterization-and-crystal-structure-of-thermostable-amylase-from-thermotoga-petrophila-reveals-high-thermostability-and-an-unusual-form-of-dimerization
#13
Uzma Hameed, Ian Price, Ikram-Ul-Haq, Ailong Ke, David B Wilson, Osman Mirza
Thermostable α-amylases have many industrial applications and are therefore continuously explored from novel sources. We present the characterization of a novel putative α-amylase gene product (Tp-AmyS) cloned from Thermotoga petrophila. The purified recombinant enzyme is highly thermostable and able to hydrolyze starch into dextrin between 90 and 100°C, with optimum activity at 98°C and pH8.5. The activity increased in the presence of Rb(1+), K(1+) and Ca(2+) ions, whereas other ions inhibited activity...
June 22, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28647525/catalytic-hydrolysis-of-starch-for-biohydrogen-production-by-using-a-newly-identified-amylase-from-a-marine-bacterium-catenovulum-sp-x3
#14
Yi-Rui Wu, Aihua Mao, Chongran Sun, Sabarathinam Shanmugam, Jin Li, Mingqi Zhong, Zhong Hu
An identified cold-adaptive, organic solvents-tolerant alkaline α-amylase (HP664) from Catenovulum sp. strain X3 was heterologously expressed and characterized in E. coli, and it was further applied to starch saccharification for biohydrogen production. The recombinant HP664 belongs to a member of glycoside hydrolase family 13 (GH13), with a molecular weight of 69.6kDa without signal peptides, and also shares a relatively low similarity (49%) to other reported amylases. Biochemical characterization demonstrated that the maximal enzymatic activity of HP664 was observed at 35°C and pH 9...
November 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28622627/changes-in-nonhuman-primate-brain-function-following-chronic-alcohol-consumption-in-previously-na%C3%A3-ve-animals
#15
Jared A Rowland, Jennifer R Stapleton-Kotloski, Greg E Alberto, April T Davenport, Robert J Kotloski, David P Friedman, Dwayne W Godwin, James B Daunais
INTRODUCTION: Chronic alcohol abuse is associated with neurophysiological changes in brain activity; however, these changes are not well localized in humans. Non-human primate models of alcohol abuse enable control over many potential confounding variables associated with human studies. The present study utilized high-resolution magnetoencephalography (MEG) to quantify the effects of chronic EtOH self-administration on resting state (RS) brain function in vervet monkeys. METHODS: Adolescent male vervet monkeys were trained to self-administer ethanol (n=7) or an isocaloric malto-dextrin solution (n=3)...
August 1, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28606521/enzyme-resistant-dextrins-from-potato-starch-for-potential-application-in-the-beverage-industry
#16
Kamila Kapusniak Jochym, Ewa Nebesny
The objective of this study was to produce soluble enzyme-resistant dextrins by microwave heating of potato starch acidified with small amounts of hydrochloric and citric acids and to characterize their properties. Twenty five samples were initially made and their solubility was determined. Three samples with the highest water solubility were selected for physico-chemical (dextrose equivalent, molecular weight distribution, pasting characteristics, retrogradation tendency), total dietary fiber (TDF) analysis, and stability tests...
September 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28596004/synthesis-of-dextrin-stabilized-colloidal-silver-nanoparticles-and-their-application-as-modifiers-of-cement-mortar
#17
Emilia Konował, Marta Sybis, Anna Modrzejewska-Sikorska, Grzegorz Milczarek
Various commercial dextrins were used as reducing and stabilizing agents for a novel one-step synthesis of silver nanoparticles from ammonia complexes of silver ions. As a result, stable colloids of silver were formed during the reaction with the particle size being the function of the dextrin type. The obtained colloids were characterized by UV-vis spectrophotometry, size distribution (using Non-Invasive Backscatter optics) and transmission electron microscopy (TEM). The achieved results clearly indicate the possibility of low-cost production of large quantities of colloidal silver nanoparticles using materials derived from renewable sources...
November 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28589103/effect-of-symbiotic-supplementation-on-glycemic-control-lipid-profiles-and-microalbuminuria-in-patients-with-non-obese-type-2-diabetes-a-randomized-double-blind-clinical-trial
#18
Zarin Sadat Ebrahimi, Ensieh Nasli-Esfahani, Azadeh Nadjarzade, Hassan Mozaffari-Khosravi
BACKGROUND: The prevalent raise of type 2 diabetes (T2D) around the globe, are creating higher risk for cardiovascular diseases (CVDs) and increasing strain on each country's health care budget in the world. Microalbuminuria has appeared as a key parameter in diabetic patients. Microalbuminuria is also related to increased cardiovascular morbidity in people who are non-obese diabetic. Some studies have suggested that consumption of symbiotic foods might help improve the metabolic profile, inflammatory factors and biomarkers of oxidative stress...
2017: Journal of Diabetes and Metabolic Disorders
https://www.readbyqxmd.com/read/28578964/biocompatible-nanogel-derived-from-functionalized-dextrin-for-targeted-delivery-of-doxorubicin-hydrochloride-to-mg-63-cancer-cells
#19
Dipankar Das, Arun Prabhu Rameshbabu, Paulomi Ghosh, Priyapratim Patra, Santanu Dhara, Sagar Pal
The present article demonstrates the targeted delivery of doxorubicin hydrochloride to human osteosarcoma cancer cell lines (MG 63) using functionalized dextrin based crosslinked, pH responsive and biocompatible nanogel. The nanogel has been prepared through Michael-type addition reaction using dextrin (Dxt), N, N'-methylene bisacrylamide (MBA, as crosslinker), acrylic acid (AA, as monomer) and potassium persulfate (KPS, as initiator). The structure, composition, morphology of the nanogel have been explored using FTIR and (1)H NMR spectroscopy, XRD, TGA, DSC, CHN and AFM analyses...
September 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28515955/effects-of-resistant-dextrin-for-weight-loss-in-overweight-adults-a-systematic-review-with-a-meta-analysis-of-randomized-controlled-trials
#20
Junichi Mukai, Yuta Tsuge, Michiko Yamada, Katsuya Otori, Koichiro Atsuda
BACKGROUND: Randomized controlled trials (RCTs) reported that resistant dextrin (RD) exerted pleiotropic effects on humans. However, limited information is available on the effects of RD for weight loss. We conducted a systematic review with a meta-analysis to summarize the available literature and compare the efficacy of RD for weight loss with that of a placebo in overweight adults. METHODS: We searched the electronic databases MEDLINE, EMBASE, The Cochrane Central Register of Controlled Trials (CENTRAL), CINAHL, Web of Science, ClincalTrials...
2017: Journal of Pharmaceutical Health Care and Sciences
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