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https://www.readbyqxmd.com/read/28532844/effects-of-d-cloprostenol-on-different-layers-and-regions-of-the-bovine-uterus-during-the-follicular-and-luteal-phases
#1
M Piccinno, R L Sciorsci, V Masciopinto, M De Rosa, A Rizzo
INTRODUCTION: D-cloprostenol is a synthetic PGF2α, commonly used in bovine reproduction, that increases myometral contractility. However, little is known regarding its contractile behaviour and how it depends on the reproductive state and uterine topography (regions and muscular layers). HYPOTHESIS AND OBJECTIVES: These aspects would affect the action of d-cloprostenol on the uterus. Therefore, we hypothesize a possible use of this drug at the time of artificial insemination, to improve conception rates and, in the post-partum, in order to accelerate uterine involution in dairy cattle...
July 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28530758/self-thermophoretic-motion-of-controlled-assembled-micro-nanomotors
#2
Xiankun Lin, Tieyan Si, Zhiguang Wu, Qiang He
As artificial active colloids, micro-/nanomotors (MNMs) can convert energy from the environment into mechanical motion in different fluids, showing potential applications in diverse fields such as targeted drug delivery and photothermal therapy. However, chemical fuels for typical catalytic MNMs, e.g., hydrogen peroxide, are highly toxic to organisms, and thus fuel-free MNMs are required. Recently, we have developed near-infrared light (NIR) propelled MNMs through integrating plasmonic gold nanoshells into nanoparticles or layer-by-layer assemblies in an asymmetric manner...
May 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28529881/iso-seq-analysis-of-nepenthes-ampullaria-nepenthes-rafflesiana-and-nepenthes%C3%A2-%C3%A3-%C3%A2-hookeriana-for-hybridisation-study-in-pitcher-plants
#3
Muhammad Mu'izzuddin Zulkapli, Muhammad Aqil Fitri Rosli, Faris Imadi Mohd Salleh, Normah Mohd Noor, Wan Mohd Aizat, Hoe-Han Goh
Tropical pitcher plants in the species-rich Nepenthaceae family of carnivorous plants possess unique pitcher organs. Hybridisation, natural or artificial, in this family is extensive resulting in pitchers with diverse features. The pitcher functions as a passive insect trap with digestive fluid for nutrient acquisition in nitrogen-poor habitats. This organ shows specialisation according to the dietary habit of different Nepenthes species. In this study, we performed the first single-molecule real-time isoform sequencing (Iso-Seq) analysis of full-length cDNA from Nepenthes ampullaria which can feed on leaf litter, compared to carnivorous Nepenthes rafflesiana, and their carnivorous hybrid Nepenthes × hookeriana...
June 2017: Genomics Data
https://www.readbyqxmd.com/read/28527117/non-viral-and-viral-delivery-systems-for-crispr-cas9-technology-in-the-biomedical-field
#4
REVIEW
Zhi-Yao He, Ke Men, Zhou Qin, Yang Yang, Ting Xu, Yu-Quan Wei
The clustered regularly interspaced short palindromic repeats (CRISPR)-associated protein 9 (CRISPR-Cas9) system provides a novel genome editing technology that can precisely target a genomic site to disrupt or repair a specific gene. Some CRISPR-Cas9 systems from different bacteria or artificial variants have been discovered or constructed by biologists, and Cas9 nucleases and single guide RNAs (sgRNA) are the major components of the CRISPR-Cas9 system. These Cas9 systems have been extensively applied for identifying therapeutic targets, identifying gene functions, generating animal models, and developing gene therapies...
May 2, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28525670/hemoadsorption-treatment-of-patients-with-acute-infective-endocarditis-during-surgery-with-cardiopulmonary-bypass-a-case-series
#5
Karl Träger, Christian Skrabal, Guenther Fischer, Thomas Datzmann, Janpeter Schroeder, Daniel Fritzler, Jan Hartmann, Andreas Liebold, Helmut Reinelt
INTRODUCTION: Infective endocarditis is a serious disease condition. Depending on the causative microorganism and clinical symptoms, cardiac surgery and valve replacement may be needed, posing additional risks to patients who may simultaneously suffer from septic shock. The combination of surgery bacterial spreadout and artificial cardiopulmonary bypass (CPB) surfaces results in a release of key inflammatory mediators leading to an overshooting systemic hyperinflammatory state frequently associated with compromised hemodynamic and organ function...
May 19, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28525668/comparison-of-hand-and-semiautomatic-tracing-methods-for-creating-maxillofacial-artificial-organs-using-sequences-of-computed-tomography-ct-and-cone-beam-computed-tomography-cbct-images
#6
Bence T Szabo, Seçil Aksoy, Gabor Repassy, Krisztian Csomo, Csaba Dobo-Nagy, Kaan Orhan
INTRODUCTION: The aim of this study was to compare the paranasal sinus volumes obtained by manual and semiautomatic imaging software programs using both CT and CBCT imaging. METHODS: 121 computed tomography (CT) and 119 cone beam computed tomography (CBCT) examinations were selected from the databases of the authors' institutes. The Digital Imaging and Communications in Medicine (DICOM) images were imported into 3-dimensonal imaging software, in which hand mode and semiautomatic tracing methods were used to measure the volumes of both maxillary sinuses and the sphenoid sinus...
May 17, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28522333/development-of-qsars-for-parameterizing-physiology-based-toxicokinetic-models
#7
Dimosthenis Α Sarigiannis, Krystalia Papadaki, Periklis Kontoroupis, Spyros P Karakitsios
A Quantitative Structure Activity Relationship (QSAR) model was developed in order to predict physicochemical and biochemical properties of industrial chemicals of various groups. This model was based on the solvation equation, originally proposed by Abraham. In this work Abraham's solvation model got parameterized using artificial intelligence techniques such as artificial neural networks (ANNs) for the prediction of partitioning into kidney, heart, adipose, liver, muscle, brain and lung for the estimation of the bodyweight-normalized maximal metabolic velocity (Vmax) and the Michaelis - Menten constant (Km)...
May 15, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28521310/the-impact-of-the-demineralized-organic-matrix-on-the-effect-of-tif4-varnish-on-the-progression-of-dentin-erosive-loss
#8
Beatriz Martines de Souza, Mariele Vertuan, Marília Afonso Rabelo Buzalaf, Ana Carolina Magalhães
This in vitro study compared the effect of TiF4 varnish with that of NaF varnish, applied on pre-eroded bovine dentin samples, with respect to the progression of erosive loss, in the presence or absence of the demineralized organic matrix (DOM). One hundred and sixty bovine dentin samples were pre-eroded (0.1% citric acid, pH 2.5, 30 min). Half of the samples were subjected to the DOM removal (collagenase solution, 5 days). Samples with and without the DOM were treated according to the groups (n = 20 with DOM and 20 without DOM/group): TiF4 varnish (2...
May 19, 2017: Caries Research
https://www.readbyqxmd.com/read/28520092/mushrooms-as-efficient-solar-steam-generation-devices
#9
Ning Xu, Xiaozhen Hu, Weichao Xu, Xiuqiang Li, Lin Zhou, Shining Zhu, Jia Zhu
Solar steam generation is emerging as a promising technology, for its potential in harvesting solar energy for various applications such as desalination and sterilization. Recent studies have reported a variety of artificial structures that are designed and fabricated to improve energy conversion efficiencies by enhancing solar absorption, heat localization, water supply, and vapor transportation. Mushrooms, as a kind of living organism, are surprisingly found to be efficient solar steam-generation devices for the first time...
May 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28516466/bioinspired-synthesis-of-cu2-modified-covalent-triazine-framework-a-new-highly-efficient-and-promising-peroxidase-mimic
#10
Fanggui Ye, Yuhao Xiong, Yuemei Qin, Linjing Su
Artificial enzyme mimetics is an emerging field of research owing to the remarkable advantages of enzyme mimics over native enzymes, including tunable catalytic efficiencies, lower cost, ease of preparation, and excellent tolerance to reaction systems. Herein, we report an efficient peroxidase mimic based on a copper-modified covalent triazine framework (CCTF). Owing to its unique specific surface area, atomically dispersed active Cu sites, efficient electron transfer, and enhanced photo-assisted peroxidase-like activity, the CCTF showed superior peroxidase-like enzyme activity...
May 18, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28510430/nanoarchitecturing-of-natural-melanin-nanospheres-by-layer-by-layer-assembly-macroscale-anti-inflammatory-conductive-coatings-with-optoelectronic-tunability
#11
Taesik Eom, Kyungbae Woo, Whirang Cho, Jaeeun Heo, Daseul Jang, Jae In Shin, David Charles Martin, Jeong Jae Wie, Bong Sup Shim
Natural melanins are biocompatible conductors with versatile functionalities. Here, we report fabrication of multifunctional poly(vinyl alcohol)/melanin nanocomposites by layer-by-layer (LBL) assembly using melanin nanoparticles (MNPs) directly extracted from sepia officinalis inks. The LBL assembly offers facile manipulation of nanotextures as well as nm-thickness control of the macroscale film by varying solvent qualities. The time-resolved absorption was monitored during the process and quantitatively studied by fractal dimension and lacunarity analysis...
May 16, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28510124/computer-aided-estimation-of-the-herg-mediated-cardiotoxicity-risk-of-potential-drug-components
#12
E V Radchenko, Yu A Rulev, A Ya Safanyaev, V A Palyulin, N S Zefirov
The hERG potassium channel is one of the most important anti-targets determining cardiotoxicity of potential drugs. Using fragmental descriptors and artificial neural networks, the predictive models of the relationship between the structure of organic compounds and their activity with respect to hERG were built, and the structural factors affecting it were analyzed. By their predictive ability and applicability domain, these models (N = 1000, Q (2) = 0.77, RMSE cv = 0.45 for affinity and N = 2886, Q (2) = 0...
March 2017: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28507055/adhesion-and-friction-of-the-smooth-attachment-system-of-the-cockroach-gromphadorhina-portentosa-and-the-influence-of-the-application-of-fluid-adhesives
#13
Oliver Betz, Melina Frenzel, Michael Steiner, Martin Vogt, Malte Kleemeier, Andreas Hartwig, Benjamin Sampalla, Frank Rupp, Moritz Boley, Christian Schmitt
Two different measurement techniques were applied to study the attachment of the smooth foot pads of the Madagascar hissing cockroach Gromphadorhina portentosa The attachment of the non-manipulated adhesive organs was compared with that of manipulated ones (depletion or substitution by artificial secretions). From measurements of the friction on a centrifuge, it can be concluded that on nanorough surfaces, the insect appears to benefit from employing emulsions instead of pure oils to avoid excessive friction...
May 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28505483/the-effects-of-ingested-aqueous-aluminum-on-floral-fidelity-and-foraging-strategy-in-honey-bees-apis-mellifera
#14
Ana M Chicas-Mosier, Bree A Cooper, Alexander M Melendez, Melina Pérez, Devrim Oskay, Charles I Abramson
Pollinator decline is of international concern because of the economic services these organisms provide. Commonly cited sources of decline are toxicants, habitat fragmentation, and parasites. Toxicant exposure can occur through uptake and distribution from plant tissues and resources such as pollen and nectar. Metals such as aluminum can be distributed to pollinators and other herbivores through this route especially in acidified or mined areas. A free-flying artificial flower patch apparatus was used to understand how two concentrations of aluminum (2mg/L and 20mg/L) may affect the learning, orientation, and foraging behaviors of honey bees (Apis mellifera) in Turkey...
May 12, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28505165/determination-of-fruit-maturity-and-its-prediction-model-based-on-the-pericarp-index-of-absorbance-difference-iad-for-peaches
#15
Binbin Zhang, Bin Peng, Chunhua Zhang, Zhizhong Song, Ruijuan Ma
Harvest maturity is closely related to peach fruit quality and has a very important effect on the fresh fruit market. Unfortunately, at present, it is difficult to determine the maturity level of peach fruits by artificial methods. The objectives of this study were to develop quadratic polynomial regression models using near-infrared spectroscopy that could determine the peel color difference, fruit firmness, soluble solids content (SSC), soluble sugar, organic acid components, and their relationships with the absorbance of chlorophyll (index of absorbance difference, IAD) in late maturing 'Xiahui 8' peach and 'Xiaguang' nectarine fruits...
2017: PloS One
https://www.readbyqxmd.com/read/28501905/investigation-of-pain-mechanisms-by-calcium-imaging-approaches
#16
REVIEW
Michael Anderson, Qin Zheng, Xinzhong Dong
Due to the complex circuitry and plethora of cell types involved in somatosensation, it is becoming increasingly important to be able to observe cellular activity at the population level. In addition, since cells rely on an intricate variety of extracellular factors, it is important to strive to maintain the physiological environment. Many electrophysiological techniques require the implementation of artificially-produced physiological environments and it can be difficult to assess the activity of many cells simultaneously...
May 13, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28501761/improving-the-quality-of-the-intensive-care-follow-up-of-ventilated-patients-during-a-national-registration-program
#17
P Reper, D Dicker, P Damas, W Aelvoet, L Huyghens, M Haelterman
OBJECTIVES: The Belgian Public Health Organization is concerned with rates of hospital-acquired infections like ventilator-associated pneumonia (VAP). Implementing best practice guidelines for these nosocomial infections has variable success in the literature. This retrospective study was undertaken to see whether implementation of the evidence-based practices as a bundle was feasible, would influence compliance, and could reduce the rates of VAP. STUDY DESIGN: We utilized easily collectable data about regular care to rapidly assess whether interventions already in place were effectively successfully applied...
May 11, 2017: Public Health
https://www.readbyqxmd.com/read/28501133/intraintestinal-administration-of-ulinastatin-protects-against-sepsis-by-relieving-intestinal-damage
#18
Bingchang Yang, Min Gao, Kangkai Wang, Yu Jiang, Yue Peng, Huali Zhang, Mingshi Yang, Xianzhong Xiao
BACKGROUND: Intravenous administration of ulinastatin (UTI), a broad spectral protease inhibitor, has been used on an experimental basis with severe sepsis patients in Asia. However, the effects of intraintestinal administration of UTI on intestinal and multiple organ damage in sepsis have not been reported. MATERIALS AND METHODS: In this study, we established a sepsis model in rats using cecal ligation and puncture and compared the effects of intraintestinal administration of UTI through an artificial fistula of duodenum and intraperitoneal administration of UTI on the pathophysiological changes of sepsis...
May 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28500946/pa-tb-cu-mof-as-luminescent-nanoenzyme-for-catalytic-assay-of-hydrogen-peroxide
#19
Zewan Qi, Li Wang, Qi You, Yang Chen
Metal organic frameworks (MOFs) with flexible structures and components have aroused great interest in designing functional materials. In this work, we designed and made a kind of PA-Tb-Cu MOF nanoenzyme capable of emitting fluorescence for the catalytic reaction of hydrogen peroxide (H2O2). Luminescent Tb(3+), catalytic Cu(2+) and bridging ligand were assembled and integrated into a single material nanoenzyme. This PA-Tb-Cu MOF nanoenzyme not only possessed excellent catalytic activity comparable to horseradish peroxidase but also can real-time fluorescently indicate the concentration of H2O2 as low as 0...
May 6, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28500914/limitations-of-experiments-performed-in-artificially-made-oecd-standard-soils-for-predicting-cadmium-lead-and-zinc-toxicity-towards-organisms-living-in-natural-soils
#20
Mateusz Sydow, Łukasz Chrzanowski, Nina Cedergreen, Mikołaj Owsianiak
Development of comparative toxicity potentials of cationic metals in soils for applications in hazard ranking and toxic impact assessment is currently jeopardized by the availability of experimental effect data. To compensate for this deficiency, data retrieved from experiments carried out in standardized artificial soils, like OECD soils, could potentially be tapped as a source of effect data. It is, however, unknown whether such data are applicable to natural soils where the variability in pore water concentrations of dissolved base cations is large, and where mass transfer limitations of metal uptake can occur...
May 9, 2017: Journal of Environmental Management
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