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https://www.readbyqxmd.com/read/28636794/differences-and-similarities-between-bronchopulmonary-dysplasia-and-asthma-in-schoolchildren
#1
Björn Nordlund, Anna James, Christina Ebersjö, Gunilla Hedlin, Eva B Broström
BACKGROUND: The long-term respiratory characteristics of ex-preterm children with bronchopulmonary dysplasia (BPD) are not established. The objective of this study was to describe hallmarks of BPD at school age in comparison to children with atopic asthma. METHODS: This study was a cross-sectional descriptive comparative study in a hospital-based setting. Thirty schoolchildren diagnosed with BPD (10.4 years/born at 26.6 weeks' gestation) and 30 age- and sex-matched children with asthma and sensitized to airborne allergens (IgE >0...
June 21, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28636373/total-synthesis-of-the-marine-polyketide-gracilioether-f
#2
Ritabrata Datta, Subrata Ghosh
First asymmetric synthesis of the marine natural product (-)-gracilioether F is described from a D-mannitol derived known compound. The key step involves intramolecular 1, 4-conjugate addition of a hydroxymethyl radical generated from Ti (III) mediated ring opening of a terminal epoxy ring tethered to a butenolide to produce stereoselectively a five-membered ring fused bicyclic lactone, the core structure present in gracilioether F.
June 21, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28629498/rodentibacter-gen-nov-including-rodentibacter-pneumotropicus-comb-nov-rodentibacter-heylii-sp-nov-rodentibacter-myodis-sp-nov-rodentibacter-ratti-sp-nov-rodentibacter-heidelbergensis-sp-nov-rodentibacter-trehalosifermentans-sp-nov-rodentibacter-rarus-sp-nov
#3
Sadhana Adhikary, Werner Nicklas, Magne Bisgaard, Ron Boot, Peter Kuhnert, Torsten Waberschek, Bent Aalbæk, Bozena Korczak, Henrik Christensen
Rodentibacter gen. nov. is proposed based on isolation and phenotypic characterization of strains, predominantly from rodents. The strains showed 86 % or higher rpoB gene sequence similarity and indicated a genus-level relationship within Pasteurellaceae. The strains compared at 16S rRNA gene sequence level showed 93.8 % or higher similarity, and their genus-level relationship within Pasteurellaceae was confirmed by phenotypic analysis. The type species Rodentibacter pneumotropicus comb. nov. is reclassified from [Pasteurella] pneumotropica with type strain NCTC 8141T (=CCUG 12398T)...
June 20, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28629456/comparison-of-the-effects-of-7-2-hypertonic-saline-and-20-mannitol-on-whole-blood-coagulation-and-platelet-function-in-dogs-with-suspected-intracranial-hypertension-a-pilot-study
#4
Ivayla D Yozova, Judith Howard, Diana Henke, Daniel Dirkmann, Katja N Adamik
BACKGROUND: Hyperosmolar therapy with either mannitol or hypertonic saline (HTS) is commonly used in the treatment of intracranial hypertension (ICH). In vitro data indicate that both mannitol and HTS affect coagulation and platelet function in dogs. The aim of this study was to compare the effects of 20% mannitol and 7.2% HTS on whole blood coagulation using rotational thromboelastometry (ROTEM®) and platelet function using a platelet function analyzer (PFA®) in dogs with suspected ICH...
June 19, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28626480/development-of-dry-powder-inhaler-containing-tadalafil-loaded-plga-nanoparticles
#5
Jaleh Varshosaz, Somayeh Taymouri, Hamed Hamishehkar, Razieh Vatankhah, Shadi Yaghubi
Inhalable dry powders containing poly lactic-co-glycolic acid (PLGA) nanoparticles (NPs) were developed for the delivery of tadalafil (TAD) for treatment of life-treating pulmonary arterial hypertension. Taguchi design was employed to evaluate the effects of different formulation variables on the physicochemical characteristics of PLGA-NPs prepared using emulsion solvent evaporation method. Inhalable PLGA-NPs of TAD were successfully prepared by co-spray drying the PLGA-NPs with inert carriers. Physicochemical characteristics and in vitro deposition of the aerosolized drug were also evaluated...
June 2017: Research in Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28619620/development-of-a-solid-dosage-platform-for-the-oral-delivery-of-bilayer-vesicles
#6
Jitinder S Wilkhu, Sarah E Mcneil, David E Anderson, Marc Kirchmeier, Yvonne Perrie
Within this work, we develop vesicles incorporating sub-unit antigens as solid dosage forms suitable for the oral delivery of vaccines. Using a combination of trehalose, dextran and mannitol, freeze-dried oral disintegrating tablets were formed which upon rehydration release bilayer vesicles incorporating antigen. Initial studies focused on the optimisation of the freeze-dry cycle and subsequently excipient content was optimised by testing tablet hardness, disintegration time and moisture content. The use of 10% mannitol and 10% dextran produced durable tablets which offered strong resistance to mechanical damage yet appropriate disintegration times and dispersed to release niosomes-entrapping antigen...
June 12, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28617524/high-prevalence-of-methicillin-resistant-coagulase-negative-staphylococci-isolated-from-a-university-environment-in-thailand
#7
Rathanin Seng, Udomluk Leungtongkam, Rapee Thummeepak, Wassana Chatdumrong, Sutthirat Sitthisak
The present study was conducted to isolate and characterize the molecular epidemiology of the methicillin-resistant staphylococci in the general university environment, where all five locations; the library, restrooms, canteens, computer rooms and outdoor surfaces, are in common use by a large population of students. We used Mannitol Salt Agar (MSA) supplemented with 4 μg/ml of oxacillin to screen the methicillin-resistant staphylococci. The species level was identified by PCR of rdr (Staphylococcus epidermidis), groESL (Staphylococcus haemolyticus) and nuc (Staphylococcus aureus and Staphylococcus warneri) genes and DNA sequencing of tuf and dnaJ genes...
June 2017: International Microbiology: the Official Journal of the Spanish Society for Microbiology
https://www.readbyqxmd.com/read/28616347/intraoperative-care-for-aortic-surgery-using-circulatory-arrest
#8
REVIEW
Félix Ezequiel Fernández Suárez, David Fernández Del Valle, Adrián González Alvarez, Blanca Pérez-Lozano
The total circulatory arrest (CA) is necessary to achieve optimal surgical conditions in certain aortic pathologies, especially in those affecting the ascending aorta and aortic arch. During this procedure it is necessary to protect all the organs of ischemia, especially those of the central nervous system and for this purpose several strategies have been developed. The first and most important protective method is systemic hypothermia. The degree of hypothermia and the route of application have been evolving and currently tend to use moderate hypothermia (MH) (20...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28614119/pump-priming-practices-and-anticoagulation-in-cardiac-surgery-results-from-the-global-cardiopulmonary-bypass-survey
#9
Lachlan F Miles, Timothy G Coulson, Carlos Galhardo, Florian Falter
BACKGROUND: Regional patterns of practice in cardiopulmonary bypass remain poorly understood with conflicting evidence regarding the best choices in pump priming preferences with respect to colloid and crystalloid and different types of fluid within these categories. In light of the variation in the literature, we hypothesized there would be considerable regional differences in cardiopulmonary bypass practice, particularly with respect to the type of fluid used to prime the extracorporeal circuit...
June 12, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28610740/toxicity-and-biodistribution-of-orally-administered-casein-nanoparticles
#10
Ana Gloria Gil, Juan Manuel Irache, Iván Peñuelas, Carlos Javier González Navarro, Adela López de Cerain
In the last years, casein nanoparticles have been proposed as carriers for the oral delivery of biologically active compounds. However, till now, no information about their possible specific hazards in vivo was available. The aim of this work was to assess the safety of casein nanoparticles when administered orally to animals through a 90 days dose-repeated toxicity study (OECD guideline 408), that was performed in Wistar rats under GLP conditions. After 90 days, no evidences of significant alterations in animals treated daily with 50, 150 or 500 mg/kg bw of nanoparticles were found...
June 10, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28606842/physical-and-mechanical-properties-of-a-new-edible-film-made-of-pea-starch-and-guar-gum-as-affected-by-glycols-sugars-and-polyols
#11
Bahareh Saberi, Suwimol Chockchaisawasdee, John B Golding, Christopher J Scarlett, Costas E Stathopoulos
The influence of different plasticizers (glycols, sugars and polyols) on the moisture sorption, mechanical, physical, optical, and microstructure characteristics of pea starch-guar gum (PSGG) film was studied. All plasticizers formed homogeneous, transparent, and smooth films, while PEG-400 did not produce film with suitable characteristics. Fourier transform infrared (FTIR) spectroscopy results indicated some interaction between plasticizers and the polymers. Scanning electron microscopy (SEM) observations of the films presented surfaces without cracks, breaks, or openings which were indicator of the miscibility and compatibility of employed plasticizers with PSGG films...
June 9, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28605976/anti-mutagenic-potential-of-algal-extracts-on-chromosomal-aberrations-in-allium-cepa-l
#12
Hoda Anwer Mansour, Hala Mahfouz, Nesma Maher
In the present study, sodium azide (SA) toxicity and the anti-mutagenic effects of different algal extracts at 0.1% and 0.2% concentrations were studied on the mitotic index (MI), chromosomal and nuclear aberrations using Allium cepa L. root assay. Moreover, phytochemical screening of photosynthetic pigments, antioxidants compounds, total antioxidant, DPPH scavenging activity, polysaccharides, and phenolic contents were done for two red seaweeds (Laurencia obtusa (Hudson) Lamouroux and Polysiphonia morrowii Harvey) and for one brown seaweed (Dictyopteris delicatula Lamouroux)...
June 2017: Acta Biologica Hungarica
https://www.readbyqxmd.com/read/28601009/results-of-an-interlaboratory-comparison-of-analytical-methods-for-quantification-of-anhydrosugars-and-biosugars-in-atmospheric-aerosol
#13
M Chiara Pietrogrande, Elena Barbaro, M Chiara Bove, Giuseppe Clauser, Cristina Colombi, Lorenza Corbella, Eleonora Cuccia, Stefano Dalla Torre, Stefano Decesari, Paola Fermo, Andrea Gambaro, Vorne Gianelle, Pierina Ielpo, Roberto Larcher, Paolo Lazzeri, Dario Massabò, Gerardo Melchionna, Tiziana Nardin, Marco Paglione, Cinzia Perrino, Paolo Prati, Marco Visentin, Nicola Zanca, Roberta Zangrando
An interlaboratory comparison was performed to evaluate the analytical methods for quantification of anhydrosugars - levoglucosan, mannosan, galactosan - and biosugars - arabitol, glucose and mannitol - in atmospheric aerosol. The performance of 10 laboratories in Italy currently involved in such analyses was investigated on twenty-six PM (particulate matter) ambient filters, three synthetic PM filters and three aqueous standard solutions. An acceptable interlaboratory variability was found, determined as the mean relative standard deviation (RSD%) of the results from the participating laboratories, with the mean RSD% values ranging from 25% to 46% and decreasing with increasing sugar concentration...
May 26, 2017: Chemosphere
https://www.readbyqxmd.com/read/28593518/purification-characterization-and-retting-of-crotolaria-juncea-fibres-by-an-alkaline-pectin-lyase-from-fusarium-oxysporum-mtcc-1755
#14
S Yadav, S K Maurya, G Anand, R Dwivedi, D Yadav
Using solid-state fermentation, production of an industrially important pectin lyase from a fungal strain Fusarium oxysporum MTCC 1755 was attempted, which was further subjected to purification and characterization. The enzyme was purified by three steps, namely ammonium sulfate fractionation, cation-exchange chromatography on CM cellulose followed by gel filtration chromatography using Sephadex G-100 column. A 16-fold purification with 31.2% yield and 3.2 U/mg specific activity was achieved. The optimum pH of the purified enzyme was 9...
June 2017: 3 Biotech
https://www.readbyqxmd.com/read/28592011/-gas-chromatography-mass-spectrometry-based-urinary-metabolomics-in-very-low-birth-weight-premature-infants
#15
S T Li, X L Huang, S G Wu, Y M Ma, C C Shi, X Xiao, H Hao
Objective: To investigate the urinary metabolic spectrum and pathways in very low birth weight (VLBW) premature infants. Method: A prospective case-control study was conducted to collect and compare the data of VLBW premature infants and full term infants from the Sixth Affiliated Hospital of Sun Yet-Sen University in 2014. Within 24 hours after birth, urine specimens in each group were collected. Metabolites of urine samples including amino acid, fatty acid and organic acid were detected using the urease pre-processing and gas chromatography mass spectrometry (GC-MS) technology...
June 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28590910/application-of-sedem-expert-systems-in-preformulation-studies-of-pediatric-ibuprofen-odt-tablets
#16
Emese Sipos, Andrea Ramona Oltean, Zoltán-István Szabó, Emőke-Margit Rédai, Gabriella Dónáth Nagy
Pediatric, ibuprofen containing orodispersible tablets (ODTs) were prepared using the SeDeM expert system methodology. In order to facilitate formulation, directly compressible ibuprofen was employed (Ibuprofen DC 8TM) and characterized using its SeDeM profile. The mannitol based superdisintegrant Ludiflash® was characterized by the SeDeM-ODT expert system, which also allowed calculation of the optimal excipient concentration in order to obtain suitable tablet hardness and disintegration time. After adding a sweetener and a standard combination of lubricants, the optimized formulation was directly compressed into tablets and evaluated in terms of tablet hardness, friability, disintegration time and dissolution profile...
June 27, 2017: Acta Pharmaceutica
https://www.readbyqxmd.com/read/28588548/thyroxine-t4-transfer-from-blood-to-cerebrospinal-fluid-in-sheep-isolated-perfused-choroid-plexus-role-of-multidrug-resistance-associated-proteins-and-organic-anion-transporting-polypeptides
#17
Kazem Zibara, Nabil El Zein, Mirna Sabra, Mohammad Hneino, Hayat Harati, Wael Mohamed, Firas H Kobeissy, Nouhad Kassem
Thyroxine (T4) enters the brain either directly across the blood-brain barrier (BBB) or indirectly via the choroid plexus (CP), which forms the blood-cerebrospinal fluid barrier (B-CSF-B). In this study, using isolated perfused CP of the sheep by single-circulation paired tracer and steady-state techniques, T4 transport mechanisms from blood into lateral ventricle CP has been characterized as the first step in the transfer across the B-CSF-B. After removal of sheep brain, the CPs were perfused with (125)I-T4 and (14)C-mannitol...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28583328/3d-printed-tablets-loaded-with-polymeric-nanocapsules-an-innovative-approach-to-produce-customized-drug-delivery-systems
#18
R C R Beck, P S Chaves, A Goyanes, B Vukosavljevic, A Buanz, M Windbergs, A W Basit, S Gaisford
The generation of multi-functional drug delivery systems, namely solid dosage forms loaded with nano-sized carriers, remains little explored and is still a challenge for formulators. For the first time, the coupling of two important technologies, 3D printing and nanotechnology, to produce innovative solid dosage forms containing drug-loaded nanocapsules was evaluated here. Drug delivery devices were prepared by fused deposition modelling (FDM) from poly(ε-caprolactone) (PCL) and Eudragit(®) RL100 (ERL) filaments with or without a channelling agent (mannitol)...
June 3, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28577996/albumin-micro-nanoparticles-entrapping-liposomes-for-itraconazole-green-formulation
#19
María José de Jesús Valle, Cristina Maderuelo Martín, Aránzazu Zarzuelo Castañeda, Amparo Sánchez Navarro
Itraconazole-loaded micro/nanoparticles containing albumin and liposomes were prepared by a technological process that avoids the use of organic solvents and crosslinker agents. The particles were characterized, lyophilized and formulated as tablets. Dynamic light scattering was used to determine the hydrodynamic diameter and zeta potential of the particles; optical and scanning-electron microscopy was used to evaluate their morphology. Spherical shaped particles of different sizes and zeta potential were obtained...
June 1, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28570675/mitochondrial-complex-i-bridges-a-connection-between-regulation-of-carbon-flexibility-and-gastrointestinal-commensalism-in-the-human-fungal-pathogen-candida-albicans
#20
Xinhua Huang, Xiaoqing Chen, Yongmin He, Xiaoyu Yu, Shanshan Li, Ning Gao, Lida Niu, Yinhe Mao, Yuanyuan Wang, Xianwei Wu, Wenjuan Wu, Jianhua Wu, Dongsheng Zhou, Xiangjiang Zhan, Changbin Chen
Efficient assimilation of alternative carbon sources in glucose-limited host niches is critical for colonization of Candida albicans, a commensal yeast that frequently causes opportunistic infection in human. C. albicans evolved mechanistically to regulate alternative carbon assimilation for the promotion of fungal growth and commensalism in mammalian hosts. However, this highly adaptive mechanism that C. albicans employs to cope with alternative carbon assimilation has yet to be clearly understood. Here we identified a novel role of C...
June 2017: PLoS Pathogens
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