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https://www.readbyqxmd.com/read/28081462/in%C3%A2-vitro-evaluation-of-biodegradable-lignin-based-nanoparticles-for-drug-delivery-and-enhanced-antiproliferation-effect-in-cancer-cells
#1
Patrícia Figueiredo, Kalle Lintinen, Alexandros Kiriazis, Ville Hynninen, Zehua Liu, Tomás Bauleth-Ramos, Antti Rahikkala, Alexandra Correia, Tomáš Kohout, Bruno Sarmento, Jari Yli-Kauhaluoma, Jouni Hirvonen, Olli Ikkala, Mauri A Kostiainen, Hélder A Santos
Currently, nanosystems have been developed and applied as promising vehicles for different biomedical applications. We have developed three lignin nanoparticles (LNPs): pure lignin nanoparticles (pLNPs), iron(III)-complexed lignin nanoparticles (Fe-LNPs), and Fe3O4-infused lignin nanoparticles (Fe3O4-LNPs) with round shape, narrow size distribution, reduced polydispersity and good stability at pH 7.4. The LNPs showed low cytotoxicity in all the tested cell lines and hemolytic rates below 12% after 12 h of incubation...
January 2, 2017: Biomaterials
https://www.readbyqxmd.com/read/28079878/a-complete-workflow-for-high-resolution-spectral-stitching-nanoelectrospray-direct-infusion-mass-spectrometry-based-metabolomics-and-lipidomics
#2
Andrew D Southam, Ralf J M Weber, Jasper Engel, Martin R Jones, Mark R Viant
Metabolomic and lipidomic studies measure and discover metabolic and lipid profiles in biological samples, enabling a better understanding of the metabolism of specific biological phenotypes. Accurate biological interpretations require high analytical reproducibility and sensitivity, and standardized and transparent data processing. Here we describe a complete workflow for nanoelectrospray ionization (nESI) direct-infusion mass spectrometry (DIMS) metabolomics and lipidomics. After metabolite and lipid extraction from tissues and biofluids, samples are directly infused into a high-resolution mass spectrometer (e...
February 2016: Nature Protocols
https://www.readbyqxmd.com/read/28072623/effect-of-substituting-50-isovue-for-sterile-water-as-the-delivery-medium-for-sir-spheres-improved-dose-delivery-and-decreased-incidence-of-stasis
#3
Cherng Chao, S William Stavropoulos, Jeffrey I Mondschein, Mandeep Dagli, Deepak Sudheendra, Gregory Nadolski, Michael C Soulen
PURPOSE: The objective of this study was to evaluate the effect of substituting 50% Isovue (Bracco Diagnostics Inc, Monroe Township, NJ) for sterile water on the delivery of Y resin microspheres (SIR-Spheres [Sirtex Medical Limited, Sydney, Australia]). MATERIALS AND METHODS: The authors retrospectively reviewed all SIR-Spheres radioembolizations at the authors' institution from January 1, 2011, to February 10, 2014. From January 1, 2011, to April 30, 2013, all users performed SIR-Spheres radioembolization per the manufacturer's original instructions using sterile water in the B and D lines and intermittently checking the progress of the embolization by injecting contrast via the B line...
January 9, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28070608/xuebijing-injection-treatment-inhibits-vasopermeability-and-reduces-fluid-requirements-in-a-canine-burn-model
#4
F-B Tang, Y-L Dai, S Hu, L-Q Ma, J-Y Li, H-P Zhang, W-H Zhang, Y-G Li, H-B Wang, H-Y Lin, Q Hu, L Li
OBJECTIVE: High vasopermeability and excessive inflammation following severe burns may result in tissue edema, organ dysfunction and the loss of circulatory plasma volume, which can influence the doctor to do the prognosis to the patients. The study aims to examine whether Xuebijing injection (XBJ), an extracts of a traditional Chinese medicine used to treat sepsis in clinic, can reduces fluid requirements by inhibiting vasopermeability and tissue edema in a canine model after burn injury...
January 9, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28066141/dehydroevodiamine%C3%A2-hcl-enhances-cognitive-function-in-memory-impaired-rat-models
#5
Ki Young Shin, Ka Young Kim, Yoo-Hun Suh
Progressive memory impairment such as that associated with depression, stroke, and Alzheimer's disease (AD) can interfere with daily life. In particular, AD, which is a progressive neurodegenerative disorder, prominently features a memory and learning impairment that is related to changes in acetylcholine and abnormal β-amyloid (Aβ) deposition in the brain. In the present study, we investigated the effects of dehydroevodiamine·HCl (DHED) on cognitive improvement and the related mechanism in memory-impaired rat models, namely, a scopolamine-induced amnesia model and a Aβ1-42-infused model...
January 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/28057806/12-15-lipoxygenase-inhibition-or-knockout-reduces-warfarin-associated-hemorrhagic-transformation-after-experimental-stroke
#6
Yu Liu, Yi Zheng, Hulya Karatas, Xiaoying Wang, Christian Foerch, Eng H Lo, Klaus van Leyen
BACKGROUND AND PURPOSE: For stroke prevention, patients with atrial fibrillation typically receive oral anticoagulation. The commonly used anticoagulant warfarin increases the risk of hemorrhagic transformation (HT) when a stroke occurs; tissue-type plasminogen activator treatment is therefore restricted in these patients. This study was designed to test the hypothesis that 12/15-lipoxygenase (12/15-LOX) inhibition would reduce HT in warfarin-treated mice subjected to experimental stroke...
January 5, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28054340/fingolimod-confers-neuroprotection-through-activation-of-rac1-after-experimental-germinal-matrix-hemorrhage-in-rat-pups
#7
William B Rolland, Paul R Krafft, Tim Lekic, Damon Klebe, Julia LeGrand, Abby Jones Weldon, Liang Xu, John H Zhang
Fingolimod, a sphingosine-1-phosphate receptor (S1PR) agonist, is clinically available to treat multiple sclerosis and is showing promise in treating stroke. We investigated if fingolimod provides long-term protection from experimental neonatal germinal matrix hemorrhage (GMH), aiming to support a potential mechanism of acute fingolimod-induced protection. GMH was induced in P7 rats by infusion of collagenase (0.3 U) into the right ganglionic eminence. Animals euthanized at four weeks post-GMH received low or high dose fingolimod (0...
January 5, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28030867/medications-that-increase-osmolality-and-compromise-the-safety-of-enteral-feeding-in-preterm-infants
#8
Suresh Chandran, Mei Chien Chua, Wanyun Lin, Jia Min Wong, Seyed Ehsan Saffari, Victor Samuel Rajadurai
BACKGROUND: Medications added to preterm milk feeds have the potential to raise osmolality, causing feed intolerance and necrotizing enterocolitis. OBJECTIVE: The aim of this study was to evaluate changes in the osmolality of milk feeds and water with 14 medications and the diluent amounts required to keep the osmolality below the safety threshold of ≤450 mOsm/kg. Changes in the osmolality of milk with medications while on continuous infusion over 2 and 4 h were determined...
December 29, 2016: Neonatology
https://www.readbyqxmd.com/read/28025043/mir-124-contributes-to-m2-polarization-of-microglia-and-confers-brain-inflammatory-protection-via-the-c-ebp-%C3%AE-pathway-in-intracerebral-hemorrhage
#9
Anyong Yu, Tianxi Zhang, Haizhen Duan, Yong Pan, Xiaojun Zhang, Guang Yang, Juan Wang, Yi Deng, Zhao Yang
Microglia mediated inflammation contributes to intracerebral hemorrhage (ICH) induced secondary injury. Activated microglia has dual functions as pro-inflammatory (M1) and anti-inflammatory (M2) factors in brain injury and repair. MiR-124 is a potent anti-inflammatory agent which affects microglia after brain injury. However, the potential of modulating the M1/M2 polarization of microglia after ICH has not been reported. In this experiment, we detected the effect of miR-124 on the M1/M2 polarization state. In addition, the ability miR-124 to subsequently impacted neurological deficit and cerebral water content of ICH mice were studied...
December 23, 2016: Immunology Letters
https://www.readbyqxmd.com/read/28005401/improved-algorithm-for-automated-glucose-clamps
#10
Mareike Kuhlenkötter, Tim Heise, Carsten Benesch
BACKGROUND: In glucose clamp experiments, blood glucose concentrations (BGs) are kept as close as possible to a predefined target level using variable glucose infusion rates (GIRs). In automated clamps, GIRs are calculated by algorithms implemented in the device (e.g., the Biostator). Low BG- and GIR-variability is needed for high clamp quality. We therefore tried to reduce oscillations in both BG and GIR with an improved algorithm implemented in ClampArt, a modern clamp device. SUBJECTS AND METHODS: The Biostator algorithm was first improved by numerical simulations of glucose clamps (in silico)...
December 22, 2016: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28005319/suppression-of-frost-nucleation-achieved-using-the-nanoengineered-integral-humidity-sink-effect
#11
Xiaoda Sun, Konrad Rykaczewski
Inhibition of frost formation is important for increasing efficiency of refrigeration systems and heat exchangers, as well as for preventing the rapid icing over of water-repellant coatings that are designed to prevent accumulation of rime and glaze. From a thermodynamic point of view, this task can be achieved by either increasing hydrophobicity of the surface or decreasing the concentration of water vapor above it. The first approach has been studied in depth, but so far has not yielded a robust solution to the problem of frost formation...
December 29, 2016: ACS Nano
https://www.readbyqxmd.com/read/27998960/acute-and-chronic-hyperglycemic-effects-of-vasopressin-in-normal-rats-involvement-of-v1a-receptors
#12
Christopher Taveau, Catherine Chollet, Daniel G Bichet, Gilberto Velho, Gilles Guillon, Maithe Corbani, Ronan Roussel, Lise Bankir, Olle Melander, Nadine Bouby
Recent epidemiological studies have revealed novel relationships between low water intake or high vasopressin (AVP) and the risk of hyperglycemia and diabetes. AVP V1A and V1B receptors (R) are expressed in liver and pancreatic islets, respectively. The present study was designed to determine the impact of different levels of circulating AVP on glucose homeostasis in normal Sprague Dawley rats, and the respective roles of V1AR and V1BR. We showed that acute injection of AVP induces a dose-dependent increase in glycemia...
December 20, 2016: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27993861/novel-validated-rp-hplc-method-for-bendamustine-hydrochloride-based-on-ion-pair-chromatography-application-in-determining-infusion-stability-and-pharmacokinetics
#13
Yuvraj Singh, Anumandla Chandrashekar, Vivek K Pawar, Veeramuthu Saravanakumar, Jayagopal Meher, Kavit Raval, Pankaj Singh, R Dinesh Kumar, Manish K Chourasia
Ion pair chromatography was used for quantifying bendamustine hydrochloride (BH) in its marketed vial. The permissive objective was to investigate time duration for which highly susceptible drug content of the marketed vial remained stable after reconstitution. However, the method could also be used to measure extremely low levels of drug in rat plasma and a pharmacokinetic study was accordingly conducted to further showcase method's applicability. Optimized separation was achieved on C-18 Purospher(®)STAR (250 mm × 4...
January 2017: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/27993107/anti-psychotic-activity-of-aqueous-root-extract-of-hemidesmus-indicus-a-time-bound-study-in-rats
#14
Madhu Sudan, Gaurav Gupta, Bharati Arali, Dinesh Kumar Chellappan, Kamal Dua
AIMS AND BACKGROUND: Psychosis is a neurological disorder which is usually defined as "loss of contact with reality." As medicine 'Hemidesmusindicus' hold a reputed place in all systems of medicine in India. It is given in the form of infusion, fine particles, or syrup. It is also a component of several medicinal preparations. The present research work is pertaining to find out an anti-psychotic activity of an aqueous root extract of Hemidesmusindicus- a time bound study in rats. METHODS: In the present study, the dried roots of Hemidesmusindicus were crushed to a coarse powder and extracted with water under reflux for 36 hours to obtain the aqueous extract of roots of Hemidesmusindicus (AERHI)...
December 16, 2016: Recent Patents on Drug Delivery & Formulation
https://www.readbyqxmd.com/read/27992173/fabrication-of-slippery-lubricant-infused-porous-surface-with-high-underwater-transparency-for-the-control-of-marine-biofouling
#15
Peng Wang, Dun Zhang, Shimei Sun, Tianping Li, Yan Sun
Marine optical instruments are bearing serious biofouling problem, which affects the accuracy of data collected. To solve the biofouling problem of marine optical instruments, a novel instance of slippery lubricant-infused porous surface (SLIPS) with high underwater-transparency was designed over glass substrate via infusing lubricant into its porous microstructure fabricated with hydrothermal method. The advantage of SLIPS as antibiofouling strategy to marine optical instruments was proven by comparing its underwater optical and antibiofouling performances with three kinds of samples (hydrophilic glass sample, textured hydrophilic glass sample, and superhydrophobic glass sample)...
December 19, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27991960/agaricus-subrufescens-substratum-nitrogen-concentration-and-mycelial-extraction-method-on-antitumor-activity
#16
Míria B D Bertéli, Ana D Lopes, Itaruã M Colla, Giani A Linde, Nelson B Colauto
Antitumor activity of Agaricus subrufescens has been shown on vegetative mycelium and basidiocarp. However, few studies have assessed the effect of A. subrufescens cultivation conditions and extraction methods on antitumor activity. This study evaluated the effect of nitrogen concentration on the cultivation medium of A. subrufescens and the extraction method of mycelial antineoplastic actives against sarcoma 180 cells implanted in mice. Two nitrogen sources (isolated soybean protein and NaNO3) and 10 nitrogen concentrations (0...
October 2016: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/27986606/imaging-the-neuroplastic-effects-of-ketamine-with-vbm-and-the-necessity-of-placebo-control
#17
A Höflich, S Ganger, M Tik, A Hahn, G S Kranz, T Vanicek, M Spies, C Kraus, C Windischberger, S Kasper, D Winkler, R Lanzenberger
In the last years a plethora of studies have investigated morphological changes induced by behavioural or pharmacological interventions using structural T1-weighted MRI and voxel-based morphometry (VBM). Ketamine is thought to exert its antidepressant action by restoring neuroplasticity. In order to test for acute impact of a single ketamine infusion on grey matter volume we performed a placebo-controlled, double-blind investigation in healthy volunteers using VBM. 28 healthy individuals underwent two MRI sessions within a timeframe of 2 weeks, each consisting of two structural T1-weighted MRIs within a single session, one before and one 45min after infusion of S-ketamine (bolus of 0...
December 13, 2016: NeuroImage
https://www.readbyqxmd.com/read/27984095/acute-oral-18-methoxycoronaridine-18-mc-decreases-both-alcohol-intake-and-iv-nicotine-self-administration-in-rats
#18
Amir H Rezvani, Marty C Cauley, Susan Slade, Corinne Wells, Stanley Glick, Jed E Rose, Edward D Levin
The ibogaine derivative 18-methoxycoronaridine (18-MC) has been found to decrease self-administration of morphine, nicotine and alcohol in rats after systemic injection. However oral dosing is the preferred route clinically. The current study evaluated the effect of oral 18-MC dosing in rats on alcohol and nicotine self-administration. For the nicotine study, young adult female Sprague-Dawley rats were fitted with IV jugular infusion catheters and trained for nicotine self-administration in 45min. sessions...
October 29, 2016: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/27976109/agrimonia-eupatoria-and-cynara-cardunculus-water-infusions-influence-on-selected-parameters-in-streptozotocin-induced-diabetic-rats
#19
P Mučaji, A Kuczmannová, P Gál, A Balažová, E Račanská, M Kameníková, S Fialová, M Nagy
No abstract text is available yet for this article.
December 2016: Planta Medica
https://www.readbyqxmd.com/read/27951705/surfactant-and-aqueous-foam-driven-oil-extraction-from-micropatterned-surfaces
#20
Rémy Mensire, Jason S Wexler, Augustin Guibaud, Elise Lorenceau, Howard A Stone
Liquid-infused surfaces are rough or patterned surfaces in which a lubricating fluid, such as oil, is infused, which exhibits various original properties (omniphobicity, biofouling, drag reduction). An outer flow in a confined geometry can entrain the oil trapped between the pattern of the surfaces by shearing the oil-water interface and cause the loss of the omniphobic properties of the interface. Starting from the theoretical analysis of Wexler et al. (Shear-driven failure of liquid-infused surfaces. Phys...
December 13, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
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