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https://www.readbyqxmd.com/read/29786830/blue-light-filtering-intraocular-lenses-iols-for-protecting-macular-health
#1
REVIEW
Laura E Downie, Ljoudmila Busija, Peter R Keller
BACKGROUND: An intraocular lens (IOL) is a synthetic lens that is surgically implanted within the eye following removal of the crystalline lens, during cataract surgery. While all modern IOLs attenuate the transmission of ultra-violet (UV) light, some IOLs, called blue-blocking or blue-light filtering IOLs, also reduce short-wavelength visible light transmission. The rationale for blue-light filtering IOLs derives primarily from cell culture and animal studies, which suggest that short-wavelength visible light can induce retinal photoxicity...
May 22, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29785886/treatment-of-homozygous-familial-hypercholesterolaemia-in-paediatric-patients-a-monocentric-experience
#2
Paola S Buonuomo, Marina Macchiaiolo, Giovanna Leone, Paola Valente, Gerarda Mastrogiorgio, Maria Gnazzo, Ippolita Rana, Michaela V Gonfiantini, Maria G Gagliardi, Francesca Romano, Andrea Bartuli
Background Homozygous familial hypercholesterolaemia is a rare life-threatening disease characterized by markedly elevated low-density lipoprotein cholesterol (LDL-C) concentrations and accelerated atherosclerosis. The presence of double gene defects in the LDL-Receptor, either the same defect (homozygous) or two different LDL-raising mutations (compound heterozygotes) or other variants, identify the homozygous phenotype (HopFH). Apheresis is a procedure in which plasma is separated from red blood cells before the physical removal of LDL-C or the LDL-C is directly removed from whole blood...
January 1, 2018: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29785402/formyl-met-leu-phe-stimulated-fpr1-phosphorylation-in-plate-adherent-human-neutrophils-enhanced-proteolysis-but-lack-of-inhibition-by-platelet-activating-factor
#3
Algirdas J Jesaitis, Jeannie Gripentrog, Jovanka M Voyich
N-formyl-Met-Leu-Phe (fMLF) is a model PAMP/DAMP driving human PMN to sites of injury/infection utilizing the GPCR, FPR1. We examined a microtiter plate format for measurement of FPR1 phosphorylation in adherent PMN at high densities and found that a new phosphosensitive FPR1 fragment, 25K-FPR1, accumulates in SDS-PAGE extracts. 25K-FPR1 is fully inhibited by diisopropylfluorophosphate PMN pretreatment but is not physiologic, as its formation failed to be significantly perturbed by ATP depletion, time and temperature of adherence, or adherence mechanism...
2018: Journal of Immunology Research
https://www.readbyqxmd.com/read/29783145/electrochemical-biosensor-system-using-a-cmos-microelectrode-array-provides-high-spatially-and-temporally-resolved-images
#4
William Tedjo, Jasmine E Nejad, Rachel Feeny, Lang Yang, Charles S Henry, Stuart Tobet, Tom Chen
The ability to view biological events in real time has contributed significantly to research in the life sciences. While video capture of real time changes in anatomical relationships is important, it is equally important to visualize real time changes in the chemical communications that drive cell behaviors. This paper describes an electrochemical imaging system capable of capturing changes in chemical gradients in live tissue slices. The system consists of a CMOS microchip with 8192 configurable Pt surface electrodes, on-chip potentiostat, on-chip control logic, and a microfluidic device designed to interface with the CMOS chip to support ex vivo tissue experimentation...
April 10, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29782323/role-of-blood-brain-barrier-in-alzheimer-s-disease
#5
Zhiyou Cai, Pei-Feng Qiao, Cheng-Qun Wan, Min Cai, Nan-Kai Zhou, Qin Li
The blood-brain barrier (BBB) is involved in the pathogenesis of Alzheimer's disease (AD). BBB is a highly selective semipermeable structural and chemical barrier which ensures a stable internal environment of the brain and prevents foreign objects invading the brain tissue. BBB dysfunction induces the failure of Aβ transport from brain to the peripheral circulation across the BBB. Especially, decreased levels of LRP-1 (low density lipoprotein receptor-related protein 1) and increased levels of RAGE (receptor for advanced glycation endproducts) at the BBB can cause the failure of Aβ transport...
May 16, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29782274/-dysfunctional-high-density-lipoproteins-role-in-atherogenesis-and-potential-targets-for-phospholipid-therapy
#6
T I Torchovskaya, V A Kudinov, T S Zakharova, S S Markin
In recent years the number of articles on damages of high-density lipoproteins (HDL) properties in patients with atherosclerosis has sharply increased. First, it concerns their ability to accept cholesterol (CH) from macrophages - the basis of antiatherogenic action of HDL. This ability was assessed ex vivo - by activity of cell cholesterol (CH) efflux to HDL or into patient's serum. In many works inverse relationship was shown between CH acceptor capacity of HDL and severity of atherosclerotic disease or frequency of its exacerbations during long-term observation, independent from HDL CH concentration...
March 2018: Kardiologiia
https://www.readbyqxmd.com/read/29779068/new-insights-into-the-inflamed-tumor-immune-microenvironment-of-gastric-cancer-with-lymphoid-stroma-from-morphology-and-digital-analysis-to-gene-expression
#7
Irene Gullo, Patrícia Oliveira, Maria Athelogou, Gilza Gonçalves, Marta L Pinto, Joana Carvalho, Ana Valente, Hugo Pinheiro, Sara Andrade, Gabriela M Almeida, Ralf Huss, Kakoli Das, Patrick Tan, José C Machado, Carla Oliveira, Fátima Carneiro
BACKGROUND: Gastric cancer with lymphoid stroma (GCLS) is characterized by prominent stromal infiltration of T-lymphocytes. The aim of this study was to investigate GCLS biology through analysis of clinicopathological features, EBV infection, microsatellite instability (MSI), immune gene-expression profiling and PD-L1 status in neoplastic cells and tumor immune microenvironment. METHODS: Twenty-four GCLSs were analyzed by RNA in situ hybridization for EBV (EBER), PCR/fragment analysis for MSI, immunohistochemistry (PD-L1, cytokeratin, CD3, CD8), co-immunofluorescence (CK/PD-L1, CD68/PD-L1), NanoString gene-expression assay for immune-related genes and PD-L1 copy number alterations...
May 19, 2018: Gastric Cancer
https://www.readbyqxmd.com/read/29779067/cost-effective-large-scale-expression-of-proteins-for-nmr-studies
#8
Julia Klopp, Aurélie Winterhalter, Rémy Gébleux, Daniela Scherer-Becker, Christian Ostermeier, Alvar D Gossert
We present protocols for high-level expression of isotope-labelled proteins in E. coli in cost-effective ways. This includes production of large amounts of unlabeled proteins and 13 C-methyl methionine labeling in rich media, where yields of up to a gram of soluble protein per liter of culture are reached. Procedures for uniform isotope labeling of 2 H, 13 C and 15 N using auto-induction or isopropyl-β-D-1-thiogalactopyranoside-induction are described, with primary focus on minimal isotope consumption and high reproducibility of protein expression...
May 19, 2018: Journal of Biomolecular NMR
https://www.readbyqxmd.com/read/29778145/impact-of-density-of-coating-agent-on-antibacterial-activity-of-silver-nanoparticle-impregnated-plasma-treated-activated-carbon
#9
Pritam Biswas, Rajdip Bandyopadhyaya
To use stabilized nanoparticles (NPs) in water as disinfectants over a very long period, the amount of coating agent (for NP stabilization) needs to be optimized. To this end, silver nanoparticles (Ag-NPs) with two different coating densities of tri-sodium citrate (12.05 and 46.17molecules/nm2 , respectively), yet of very similar particle size (29 and 27 nm, respectively) were synthesized. Both sets of citrate capped NPs were then separately impregnated on plasma treated activated carbon (AC), with similar Ag loading of 0...
May 2018: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29777805/design-of-carboxymethyl-chitosan-based-heparin-mimicking-cross-linked-beads-for-safe-and-efficient-blood-purification
#10
Yilin Wang, Xuelian Huang, Chao He, YuPei Li, Weifeng Zhao, Changsheng Zhao
Safe and efficient carboxymethyl chitosan (CMC)-based heparin-mimicking cross-linked beads (CMC/PAMPS) as adsorbents for the clearance of low-density lipoprotein-cholesterol (LDL-c) in blood purification were prepared through hydrogen bonding interactions followed with in situ cross-linking with 2-acrylamido-2-methyl-1-propanesulfonicacid (AMPS). Fourier transform infrared spectra (FTIR), two-dimensional correlation FTIR spectroscopy (2D IR), thermal gravimetric analysis (TGA) and energy dispersive X-ray spectrometer (EDS) demonstrated the successful synthesis of CMC/PAMPS beads...
May 16, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29777263/folate-treatment-of-pregnant-rat-dams-abolishes-metabolic-effects-in-female-offspring-induced-by-a-paternal-pre-conception-unhealthy-diet
#11
Jian Li, Yong-Ping Lu, Oleg Tsuprykov, Ahmed A Hasan, Christoph Reichetzeder, Mei Tian, Xiao Li Zhang, Qin Zhang, Guo-Ying Sun, Jingli Guo, Mohamed M S Gaballa, Xiao-Ning Peng, Ge Lin, Berthold Hocher
AIMS/HYPOTHESIS: Paternal high-fat diet prior to mating programmes impaired glucose tolerance in female offspring. We examined whether the metabolic consequences in offspring could be abolished by folate treatment of either the male rats before mating or the corresponding female rats during pregnancy. METHODS: Male F0 rats were fed either control diet or high-fat, high-sucrose and high-salt diet (HFSSD), with or without folate, before mating. Male rats were mated with control-diet-fed dams...
May 18, 2018: Diabetologia
https://www.readbyqxmd.com/read/29776156/realizations-of-highly-heterogeneous-collagen-networks-via-stochastic-reconstruction-for-micromechanical-analysis-of-tumor-cell-invasion
#12
Hanqing Nan, Long Liang, Guo Chen, Liyu Liu, Ruchuan Liu, Yang Jiao
Three-dimensional (3D) collective cell migration in a collagen-based extracellular matrix (ECM) is among one of the most significant topics in developmental biology, cancer progression, tissue regeneration, and immune response. Recent studies have suggested that collagen-fiber mediated force transmission in cellularized ECM plays an important role in stress homeostasis and regulation of collective cellular behaviors. Motivated by the recent in vitro observation that oriented collagen can significantly enhance the penetration of migrating breast cancer cells into dense Matrigel which mimics the intravasation process in vivo [Han et al...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29776028/modeling-thermal-inkjet-and-cell-printing-process-using-modified-pseudopotential-and-thermal-lattice-boltzmann-methods
#13
Salman Sohrabi, Yaling Liu
Pseudopotential lattice Boltzmann methods (LBMs) can simulate a phase transition in high-density ratio multiphase flow systems. If coupled with thermal LBMs through equation of state, they can be used to study instantaneous phase transition phenomena with a high-temperature gradient where only one set of formulations in an LBM system can handle liquid, vapor, phase transition, and heat transport. However, at lower temperatures an unrealistic spurious current at the interface introduces instability and limits its application in real flow system...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29775891/protective-effect-of-atorvastatin-meditated-by-hmgcr-gene-on-diabetic-rats-with-atherosclerosis-an-in-vivo-and-in-vitro-study
#14
Yong-Zhi Wang, Lei Yang, Chuan-Fang Li
BACKGROUND: Accelerated atherosclerosis in patients suffering from diabetes represents a major cause of morbidity and mortality. The aim of present study was to investigate the protective effects conferred by atorvastatin (AVT) meditated by the HMGCR gene in diabetic rats with atherosclerosis. METHODS: Serum triglyceride (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), very-low-density lipoprotein cholesterol (VLDL-C), fasting blood glucose (FBG) and serum insulin (INS) were all determined by means of in vivo experiments...
May 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29775563/anolis-carolinensis-as-a-model-to-understand-molecular-and-cellular-basis-of-foveal-development
#15
Naif S Sannan, Xianghong Shan, Kevin Gregory-Evans, Kenro Kusumi, Cheryl Y Gregory-Evans
The fovea is an anatomical specialization of the central retina containing closely packed cone-photoreceptors providing an area of high acuity vision in humans and primates. Despite its key role in the clarity of vision, little is known about the molecular and cellular basis of foveal development, due to the absence of a foveal structure in commonly used laboratory animal models. Of the amniotes the retina in birds of prey and some reptiles do exhibit a typical foveal structure, but they have not been studied in the context of foveal development due to lack of availability of embryonic tissue, lack of captive breeding programs, and limited genomic information...
May 15, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29775275/a-high-performance-and-recyclable-al-air-coin-cell-based-on-eco-friendly-chitosan-hydrogel-membranes
#16
Yisi Liu, Qian Sun, Xiaofei Yang, Jianneng Liang, Biqiong Wang, Alicia Koo, Ruying Li, Jie Li, Xueliang Sun
Aluminum-air batteries are a promising power supply for electronics due to its low cost and high energy density. However, portable coin-type Al-air batteries operating under ambient air condition for small electronic appliances have rarely been reported. Herein, coin cell-type Al-air batteries using cost-effective and eco-friendly chitosan hydrogel membranes modified by SiO2, SnO2, and ZnO have been prepared and assembled. The Al-air coin cell employing chitosan hydrogel membrane containing 10 wt.% SiO2 as a separator exhibits better discharge performance with a higher flat voltage plateau, longer discharge duration, and higher power density than the cells using a chitosan hydrogel membrane containing SnO2 or ZnO...
May 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29775274/oxide-based-composite-electrolytes-using-na3zr2si2po12-na3ps4-interfacial-ion-transfer
#17
Kousuke Noi, Yuka Nagata, Takashi Hakari, Kenji Suzuki, So Yubuchi, Yusuke Ito, Atsushi Sakuda, Akitoshi Hayashi, Masahiro Tatsumisago
All-solid-state sodium batteries using Na3Zr2Si2PO12 (NASICON) solid electrolytes are promising candidates for safe and low-cost advanced rechargeable battery systems. Although NASICON electrolytes have intrinsically high sodium ion conductivities, their high sintering temperatures interfere with the immediate development of high-performance batteries. In this work, sintering-free NASICON-based composites with Na3PS4 (NPS) glass-ceramics were prepared to combine the high grain-bulk conductivity of NASICON and the interfacial formation ability of NPS...
May 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29775013/-effects-of-highly-selective-branches-neurotomy-of-vidian-nerve-with-low-temperature-plasma-on-vasoactive-intestinal-peptide-in-nasal-mucosal-cells-of-patients-with-allergic-rhinitis
#18
P He, X J Jin, H Zhao
Objective: The aim of this study is to investigate the effect of highly selective branches neurotomy of vidian nerve with low temperature plasma on the level of vasoactive intestinal peptide in nasal mucosa of patients with allergic rhinitis. Method: Fifty patients with allergic rhinitis were selected as the experimental group. At the same time, 50 normal adults in our hospital were selected as the control group. Highly selective branches neurotomy of vidian nerve with low temperature plasma was performed to observe the changes of vascular intestinal peptide levels in patients with nasal mucosa and the clinical efficacy...
February 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29774917/uniform-li-deposition-regulated-via-three-dimensional-polyvinyl-alcohol-nanofiber-networks-for-effective-li-metal-anodes
#19
Gang Wang, Xunhui Xiong, Zhihua Lin, Jie Zheng, Zheng Fenghua, Youpeng Li, Yanzhen Liu, Chenghao Yang, Yiwei Tang, Meilin Liu
Lithium metal anodes are considered to be the most promising anode material for next-generation advanced energy storage devices due to their high reversible capacity and extremely low anode potential. Nevertheless, the formation of dendritic Li, induced by the repeated breaking and repairing of solid electrolyte interphase layers, always causes poor cycling performance and low coulombic efficiency, as well as serious safety problems, which have hindered the practical application of Li anodes for a long time...
May 18, 2018: Nanoscale
https://www.readbyqxmd.com/read/29774408/possible-association-of-cag-repeat-polymorphism-in-kcnn3-encoding-the-potassium-channel-sk3-with-oxaliplatin-induced-neurotoxicity
#20
Benjamin Anon, Bérenger Largeau, Alban Girault, Aurélie Chantome, Morgane Caulet, Clémence Perray, Driffa Moussata, Christophe Vandier, Chantal Barin-Le Guellec, Thierry Lecomte
INTRODUCTION: Data suggest a role of the potassium channel SK3 (KCNN3 gene) in oxaliplatin-induced neurotoxicity (OIN). Length variations in the polymorphic CAG repeat of the KCNN3 gene may be associated with the risk of OIN. MATERIALS AND METHODS: We performed patch-clamp experiments on HEK293 cell lines, expressing SK3 channel isoforms with short (11) or long (24) CAG repetitions, to measure intracellular calcium concentrations to test the effects of oxaliplatin on current density...
May 17, 2018: Cancer Chemotherapy and Pharmacology
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