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https://www.readbyqxmd.com/read/29777326/sirolimus-coated-poly-l-lactic-acid-modified-polypropylene-mesh-with-minimal-intra-peritoneal-adhesion-formation-in-a-rat-model
#1
S Lu, W Hu, Z Zhang, Z Ji, T Zhang
PURPOSE: This study evaluated the manufacturing method and anti-adhesion properties of a new composite mesh in the rat model, which was made from sirolimus (SRL) grafts on a poly(L-lactic acid) (PLLA)-modified polypropylene (PP) hernia mesh. METHODS: PLLA was first grafted onto argon-plasma-treated native PP mesh through catalysis of stannous chloride. SRL was grafted onto the surface of PP-PLLA meshes using catalysis of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) and 4-dimethylaminopyridine (DMAP) in a CH2 Cl2 solvent...
May 18, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/29776745/anatomical-histological-and-immunohistochemical-study-of-testicular-development-in-columba-livia-aves-columbiformes
#2
G B Olea, M V Aguirre, D M Lombardo
In this work, testicular ontogeny is analyzed at the anatomical, histological and immunohistochemical levels; the latter through the detection of GnRHR and PCNA in the testicles of embryos, neonates and juveniles of Columba livia. We analyzed 150 embryos, 25 neonates and 5 juveniles by means of observations under a stereoscopic magnifying glass and scanning electron microscope (SEM). The histological analysis was performed using hematoxylin-eosin staining techniques and the PAS reaction. For the immunohistochemical analysis, the expression of GnRHR and PCNA in embryos corresponding to stages 41, 43 and in neonates of 2, 5, 7 and 75 days post-hatch was revealed in testicular histological preparations...
May 16, 2018: Acta Histochemica
https://www.readbyqxmd.com/read/29775822/nanocomposite-thin-films-ag-0-np-tio-2-in-the-efficient-removal-of-micro-pollutants-from-aqueous-solutions-a-case-study-of-tetracycline-and-sulfamethoxazole-removal
#3
Alka Tiwari, Alok Shukla, Lalliansanga, Diwakar Tiwari, Seung Mok Lee
The aim of this communication is to synthesize novel Nanocomposite thin film materials (Ag0 (NP)/TiO2 ) using the template process. Surface morphology of materials was obtained by the Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) analyses. The presence of doped Ag-nanoparticles was confirmed by the TEM images along with the SEM-EDX analyses. The Atomic Force Microscopic images were demonstrated the surface roughness and thickness of Nanocomposite thin films. X-ray diffraction analysis confirmed that TiO2 was predominantly present to its anatase mineral phase...
May 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29775349/tuning-the-pairing-interaction-in-a-d-wave-superconductor-by-paramagnons-injected-through-interfaces
#4
M Naritsuka, P F S Rosa, Yongkang Luo, Y Kasahara, Y Tokiwa, T Ishii, S Miyake, T Terashima, T Shibauchi, F Ronning, J D Thompson, Y Matsuda
Unconventional superconductivity and magnetism are intertwined on a microscopic level in a wide class of materials. A new approach to this most fundamental and hotly debated issue focuses on the role of interactions between superconducting electrons and bosonic fluctuations at the interface between adjacent layers in heterostructures. Here we fabricate hybrid superlattices consisting of alternating atomic layers of the heavy-fermion superconductor CeCoIn_{5} and antiferromagnetic (AFM) metal CeRhIn_{5}, in which the AFM order can be suppressed by applying pressure...
May 4, 2018: Physical Review Letters
https://www.readbyqxmd.com/read/29775315/strain-mapping-of-two-dimensional-heterostructures-with-sub-picometer-precision
#5
Yimo Han, Kayla X Nguyen, Michael Cao, Paul D Cueva, Saien Xie, Mark W Tate, Prafull Purohit, Sol M Gruner, Jiwoong Park, David A Muller
Next-generation, atomically thin devices require in-plane, one-dimensional heterojunctions to electrically connect different two-dimensional (2D) materials. However, the lattice mismatch between most 2D materials leads to unavoidable strain, dislocations, or ripples, which can strongly affect their mechanical, optical, and electronic properties. We have developed an approach to map 2D heterojunction lattice and strain profiles with sub-picometer precision and the ability to identify dislocations and out-of-plane ripples...
May 18, 2018: Nano Letters
https://www.readbyqxmd.com/read/29774634/study-of-hyperpigmentation-in-human-skin-disorder-using-different-electron-microscopy-techniques
#6
Seulgi Noh, Hyosun Choi, Ji Soo Kim, Il-Hwan Kim, Ji Young Mun
There is a global trend of increase in the demand for three-dimensional electron microscopy with high resolution. The ultrastructural change and related functional studies are necessary to investigate biological phenomena. In this study, currently available 3D reconstruction techniques of electron microscopes (serial block-face scanning electron microscopy and focused ion beam-scanning electron microscopy) were used to investigate hyperpigmentary disorders in human skin. In the basal layer of the epidermis in the human skin, there are melanocytes that produce melanin and keratinocytes that act as a barrier against environmental damage...
May 18, 2018: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29774548/release-of-tgf-%C3%AE-1-into-root-canals-with-various-final-irrigants-in-regenerative-endodontics-an-in-vitro-analysis
#7
Y Chae, M Yang, J R Kim
AIM: To investigate the release of growth factors into the root canal space after various final irrigants during regenerative endodontic procedures. The residual cytotoxic effect of final irrigants on stem cells from the apical papilla (SCAP) was also examined. METHODOLOGY: To measure the release of TGF-β1, root segments (8mm long) were irrigated with 1.5% NaOCl followed by 20 mL of final irrigants; Saline, 17% EDTA, 10% citric acid, 10% or 37% phosphoric acid...
May 17, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29774292/evaluation-of-phytosynthesised-silver-nanoparticles-from-leaf-extracts-of-leucas-aspera-and-hyptis-suaveolens-and-their-larvicidal-activity-against-malaria-dengue-and-filariasis-vectors
#8
Devan Elumalai, Maduraiveeran Hemavathi, Chandrasekar Vijayalakshmi Deepaa, Patheri Kunyil Kaleena
The present study deals with the green synthesis of silver nanoparticle from the aqueous leaf extracts of Leucas aspera and Hyptis suaveolens as reducing agent and to investigate the larvicidal activity of synthesized silver nanoparticles. The synthesized silver nanoparticles were characterized by Ultraviolet and visible absorption spectroscopy (UV), Fourier transform-infrared spectroscopy (FT-IR), X-ray spectroscopy (XRD), Field emission scanning electron microscope (FESEM) and High-resonance transmission electron microscopy (HRTEM) analysis...
November 2017: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29772689/fabrication-and-characterization-of-nanoenergetic-hollow-spherical-hexanitrostibene-hns-derivatives
#9
Xiong Cao, Peng Deng, Shuangqi Hu, Lijun Ren, Xiaoxia Li, Peng Xiao, Yu Liu
The spherization of nanoenergetic materials is the best way to improve the sensitivity and increase loading densities and detonation properties for weapons and ammunition, but the preparation of spherical nanoenergetic materials with high regularization, uniform size and monodispersity is still a challenge. In this paper, nanoenergetic hollow spherical hexanitrostibene (HNS) derivatives were fabricated via a one-pot copolymerization strategy, which is based on the reaction of HNS and piperazine in acetonitrile solution...
May 16, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29772663/electrochemical-and-electronic-charge-transport-properties-of-ni-doped-limn%C3%A2-o%C3%A2-spinel-obtained-from-polyol-mediated-synthesis
#10
Shuo Yang, Dirk Oliver Schmidt, Abhishek Khetan, Felix Schrader, Simon Jakobi, Melanie Homberger, Michael Noyong, Anja Paulus, Hans Kungl, Rüdiger-Albert Eichel, Heinz Pitsch, Ulrich Simon
LiNi0.5 Mn1.5 O₄ (LNMO) spinel has been extensively investigated as one of the most promising high-voltage cathode candidates for lithium-ion batteries. The electrochemical performance of LNMO, especially its rate performance, seems to be governed by its crystallographic structure, which is strongly influenced by the preparation methods. Conventionally, LNMO materials are prepared via solid-state reactions, which typically lead to microscaled particles with only limited control over the particle size and morphology...
May 16, 2018: Materials
https://www.readbyqxmd.com/read/29772575/therapeutic-effect-of-cd4-cd25-regulatory-t-cells-amplified-in-vitro-on-experimental-autoimmune-neuritis-in-rats
#11
Feng-Jie Wang, Dan Cui, Wei-Dong Qian
BACKGROUND/AIMS: This study aimed to explore whether the adoptive transfusion of autologous CD4+CD25+ regulatory T cells (CD4+CD25+ Tregs) has a therapeutic effect on Experimental autoimmune neuritis (EAN) model rats, and it provides new experimental and theoretical bases for the immunotherapy of Guillain-Barre syndrome (GBS). METHODS: CD4+CD25+ Tregs were sorted from the spleens of rats using immunomagnetic bead separation techniques combined with flow cytometry...
May 14, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29771879/-influence-of-chemical-compositions-of-anterior-chamber-aqueous-humour-and-blood-serum-on-the-secretion-of-intraocular-fluid
#12
A P Ermolaev, I A Novikov, L I Melnikova
PURPOSE: to identify the standard chemical composition of anterior chamber aqueous humour (AH) using energy dispersive spectrometer (EDS) integrated in scanning electron microscope (SEM); to study the influence of concentration gradient of chemical elements between aqueous humor and blood serum (BS) on the secretion of intraocular fluid (IOF) at normal and increased intraocular pressure (IOP). MATERIAL AND METHODS: The study involved two groups of patients consisting of 33 people (33 eyes) each...
2018: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/29771491/modification-of-side-chains-of-conjugated-molecules-and-polymers-for-charge-mobility-enhancement-and-sensing-functionality
#13
Zitong Liu, Guanxin Zhang, Deqing Zhang
Organic semiconductors have received increasing attentions in recent years because of their promising applications in various optoelectronic devices. The key performance metric for organic semiconductors is charge carrier mobility, which is governed by the electronic structures of conjugated backbones and intermolecular/interchain π-π interactions and packing in both microscopic and macroscopic levels. For this reason, more efforts have been paid to the design and synthesis of conjugated frameworks for organic semiconductors with high charge mobilities...
May 17, 2018: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29771445/tirofiban-combined-with-rt-pa-intraarterial-thrombolysis-improves-the-recanalization-rate-of-acute-middle-cerebral-artery-occlusion-in-rabbits
#14
Y-J Yu, W Xiong
OBJECTIVE: To investigate the curative effect of tirofiban combined with recombinant tissue-plasminogen activator (rt-PA) selective intra-arterial thrombolysis on acute middle cerebral artery occlusion (MCAO). MATERIALS AND METHODS: A total of 60 adult male Japanese white rabbits weighing 2.5-3.0 kg were selected, and the acute cerebral infarction model was established via autologous thromboembolism of middle cerebral artery. Rabbits were randomly divided into 4 groups: tirofiban group (Ti group, 5 μg/kg, n=15), rt-PA group (rt-PA group, 2 mg/kg, n=15), tirofiban + rt-PA group (Ti + rt-PA group, 3 μg/kg Ti + 1 mg/kg rt-PA, n=15), and control group (Co group, n=15)...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29770776/in-situ-transmission-electron-microscopy-of-transistor-operation-and-failure
#15
Baoming Wang, M Zahabul Islam, M Aman Haque, Kelson Chabak, Michael Snure, Eric Heller, Nicholas Robert Glavin
Microscopy is typically used as a post-mortem analytical tool in performance and reliability studies on nanoscale materials and devices. In this study, we demonstrate real-time microscopy of operation and failure of AlGaN/GaN high electron mobility transistors inside the transmission electron microscope (TEM). Loading till failure was performed on the electron transparent transistors to visualize the failure mechanisms caused by self heating. At lower drain voltages, thermo-mechanical stresses induce irreversible microstructural deformation, mostly along the AlGaN/GaN interface, to initiate the damage process...
May 17, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29770446/anticancer-activity-of-tetrandrine-by-inducing-pro-death-apoptosis-and-autophagy-in-human-gastric-cancer-cells
#16
Xin-Yu Bai, Yuan-Gui Liu, Wu Song, Ying-Ying Li, Dong-Shun Hou, Hao-Ming Luo, Ping Liu
OBJECTIVES: To investigate the antitumour property of tetrandrine by inducing autophagy and apoptosis in human gastric cancer cells, and to explore the potential molecular mechanisms. METHODS: The antitumour activity of tetrandrine was assessed through MTT assay. Apoptosis was measured by flow cytometry and microscopic examination of cellular morphology. The mitochondrial membrane potential was detected by staining with Rh-123. Induction of autophagy was monitored by transmission electron microscopy observation, using GFP-LC3 transfection...
May 16, 2018: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/29770272/from-the-guiana-highlands-to-the-brazilian-atlantic-rain-forest-four-new-species-of-selaginella-selaginellaceae-lycopodiophyta-s-agioneuma-s-magnafornensis-s-ventricosa-and-s-zartmanii
#17
Iván A Valdespino, Christian A López, Adriel M Sierra, Jorge Ceballos
We describe four new species in the genus Selaginella (i.e., S . agioneuma, S. magnafornensis , S . ventricosa , and S . zartmanii ) from Brazil, all presently classified in subg. Stachygynandrum . For each of the new taxa we discuss taxonomic affinities and provide information on habitat, distribution, and conservation status. In addition, line drawings and scanning electron microscope (SEM) images of stems sections, leaves, and spores (when present) are included. Selaginella agioneuma and S. magnafornensis are from the State of Espíritu Santo where they inhabit premontane to montane Atlantic rain forests in the Reserva Biológica Augusto Ruschi and Parque Estadual Forno Grande, respectively...
2018: PeerJ
https://www.readbyqxmd.com/read/29770191/electrolytically-generated-hydrogen-warm-water-cleanses-the-keratin-plug-clogged-hair-pores-and-promotes-the-capillary-blood-streams-more-markedly-than-normal-warm-water-does
#18
Yoshiharu Tanaka, Yasukazu Saitoh, Nobuhiko Miwa
Biomedical properties of hydrogen water have been extensively investigated, but the effect of hydrogen on good healthy subjects remains unclear. This study was designed to explore the hygiene improvement by electrolytically generated hydrogen warm water (40°C) on capillary blood streams, skin moisture, and keratin plugs in skin pores in normal good healthy subjects with their informed consents. Fingertip-capillary blood stream was estimated after hand-immersing in hydrogen warm water by videography using a CCD-based microscope, and the blood flow levels increased to about 120% versus normal warm water, after 60 minutes of the hand-immersing termination...
January 2018: Medical Gas Research
https://www.readbyqxmd.com/read/29769092/mineralization-of-alpha-1-antitrypsin-inclusion-bodies-in-mmalton-alpha-1-antitrypsin-deficiency
#19
Francesco Callea, Isabella Giovannoni, Paola Francalanci, Renata Boldrini, Gavino Faa, Daniela Medicina, Valerio Nobili, Valeer J Desmet, Kamal Ishak, Kuniaki Seyama, Emanuele Bellacchio
BACKGROUND: Alpha-1-antitrypsin (AAT) deficiency (AATD) of Z, Mmalton, Siiyama type is associated with liver storage of the mutant proteins and liver disease. The Z variant can be diagnosed on isoelectric focusing (IEF) while Mmalton and Siiyama may be missed or misdiagnosed with this technique. Therefore, molecular analysis is mandatory for their characterization. In particular, that holds true for the Mmalton variant as on IEF profile it resembles the wild M2 subtype. METHODS: This is a retrospective analysis involving review of medical records and of liver biopsy specimens from a series of Mmalton, Z and Siiyama Alpha-1-antitrypsin deficiency patients...
May 16, 2018: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29769037/a-method-for-estimating-relative-changes-in-the-synaptic-density-in-drosophila-central-nervous-system
#20
Dipti Rai, Swagata Dey, Krishanu Ray
BACKGROUND: Synapse density is an essential indicator of development and functioning of the central nervous system. It is estimated indirectly through the accumulation of pre and postsynaptic proteins in tissue sections. 3D reconstruction of the electron microscopic images in serial sections is one of the most definitive means of estimating the formation of active synapses in the brain. It is tedious and highly skill-dependent. Confocal imaging of whole mounts or thick sections of the brain provides a natural alternative for rapid gross estimation of the synapse density in large areas...
May 16, 2018: BMC Neuroscience
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