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https://www.readbyqxmd.com/read/29777796/identification-of-a-sodium-pump-na-k-atpase-%C3%AE-1-targeted-peptide-for-pet-imaging-of-breast-cancer
#1
Qian Wang, Shi-Bing Li, Yi-Ying Zhao, Da-Nian Dai, Hui Du, Yan-Zhu Lin, Jia-Cong Ye, Jing Zhao, Wei Xiao, Yan Mei, Yi-Tai Xiao, Shi-Chu Liu, Yan Li, Yun-Fei Xia, Er-Wei Song, Gang-Hua Tang, Wei-Guang Zhang, Zhi-Jiang Li, Xiao-Bin Zheng, De-Hai Cao, Man-Zhi Li, Qian Zhong, Zhong-Ping Chen, Chao-Nan Qian, Wei Fan, Guo-Kai Feng, Mu-Sheng Zeng
The sodium pump Na+ /K+ ATPase a1 subunit(NKA a1), an attractive cancer-related biomarker and therapeutic target, is closely related to the development and progression of several cancers including breast cancer. Currently, a NKA a1 inhibitor, UNBS1450, has already evidenced its great therapeutic potential in personalized cancer treatment. The ability of non-invasive imaging of NKA a1 expression would be useful for selecting cancer patients who may benefit from this drug. Here, we identified an S3 peptide that is specifically homed to breast cancer by phage display...
May 16, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
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
#2
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/29774173/role-of-interventional-radiology-in-the-management-of-peripheral-vascular-malformations-a-tertiary-care-center-experience
#3
Misbah Tahir, Muhammad Anees Mumtaz, Anum Sultan, Jawaid Iqbal, Raza Sayani
Peripheral vascular malformations (PVMs) represent a wide spectrum of vascular abnormalities occurring due to anomalous connections between arteries, veins, capillaries, and lymphatic channels at the microscopic level, in different combinations. They are rare and challenging to treat. Different operators may have different approaches based on their experience and expertise. Sclerotherapy either alone or in combination with embolization has been used as an independent method for the treatment of PVMs. Purpose The aim of this study is to assess the safety and efficacy of sclerotherapy and embolization, with or without surgery, for the treatment of peripheral vascular malformations, based on our approach...
March 16, 2018: Curēus
https://www.readbyqxmd.com/read/29774076/the-human-somatostatin-receptor-type-2-as-an-imaging-and-suicide-reporter-gene-for-pluripotent-stem-cell-derived-therapy-of-myocardial-infarction
#4
Katrien Neyrinck, Natacha Breuls, Bryan Holvoet, Wouter Oosterlinck, Esther Wolfs, Hubert Vanbilloen, Olivier Gheysens, Robin Duelen, Willy Gsell, Ivo Lambrichts, Uwe Himmelreich, Catherine M Verfaillie, Maurilio Sampaolesi, Christophe M Deroose
Rationale: Pluripotent stem cells (PSCs) are being investigated as a cell source for regenerative medicine since they provide an infinitive pool of cells that are able to differentiate towards every cell type of the body. One possible therapeutic application involves the use of these cells to treat myocardial infarction (MI), a condition where billions of cardiomyocytes (CMs) are lost. Although several protocols have been developed to differentiate PSCs towards CMs, none of these provide a completely pure population, thereby still posing a risk for neoplastic teratoma formation...
2018: Theranostics
https://www.readbyqxmd.com/read/29773582/activation-of-large-conductance-calcium-activated-k-channels-by-nitric-oxide-mediates-apelin-induced-relaxation-of-coronary-arteries
#5
Amreen Mughal, Chengwen Sun, Stephen T O'Rourke
Apelin increases coronary blood flow, cardiac contractility and cardiac output. Based on these favorable hemodynamic effects, apelin and apelin-like analogs are being developed for treating heart failure and related disorders; however, the molecular mechanisms underlying apelin-induced coronary vasodilation are unknown. This study aimed to elucidate the signaling pathways by which apelin causes smooth muscle relaxation in coronary arteries. Receptors for apelin (APJ receptors) were expressed in coronary arteries, as determined by Western blot and PCR analyses...
May 17, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29772786/tau-fibril-formation-in-cultured-cells-compatible-with-a-mouse-model-of-tauopathy
#6
Gen Matsumoto, Kazuki Matsumoto, Taeko Kimura, Tetsuya Suhara, Makoto Higuchi, Naruhiko Sahara, Nozomu Mori
Neurofibrillary tangles composed of hyperphosphorylated tau protein are primarily neuropathological features of a number of neurodegenerative diseases collectively termed tauopathy. To understand the mechanisms underlying the cause of tauopathy, precise cellular and animal models are required. Recent data suggest that the transient introduction of exogenous tau can accelerate the development of tauopathy in the brains of non-transgenic and transgenic mice expressing wild-type human tau. However, the transmission mechanism leading to tauopathy is not fully understood...
May 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29768892/green-synthesis-characterization-and-catalytic-activity-of-gold-nanoparticles-prepared-using-rosmarinic-acid
#7
Soo Hyeon Lim, Youmie Park
Green strategies to synthesize gold nanoparticles have attracted a substantial amount of attention because global sustainability is a focal issue in many research areas. In the present study, rosmarinic acid was utilized as a reducing agent to reduce gold ions to gold nanoparticles. The characteristic surface plasmon resonance of gold nanoparticles was observed at 532 nm with a pink-colored colloidal solution. High-resolution transmission electron microscopy (HR-TEM) revealed the presence of spherical nanoparticles along with triangular nanoplates...
January 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29768838/mesoporous-cds-via-network-of-self-assembled-nanocrystals-synthesis-characterization-and-enhanced-photoconducting-property
#8
Astam K Patra, Biplab Banerjee, Asim Bhaumik
Semiconduction nanoparticles are intensively studied due to their huge potential in optoelctronic applications. Here we report an efficient chemical route for hydrothermal synthesis of aggregated mesoporous cadmium sulfide (CdS) nanoparticles using supramolecular-assembly of ionic and water soluble sodium salicylate as the capping agent. The nanostructure, mesophase, optical property and photoconductivity of these mesoporous CdS materials have been characterized by using small and wide angle powder X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), N2-sorption, Raman analysis, Fourier transformed infrared (FT-IR), UV-Visible DSR spectroscopy, and photoconductivity measurement...
January 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29766604/sodium-nitroglycerin-induces-middle-cerebral-artery-vasodilation-in-young-healthy-adults
#9
Jenna M Schulz, Baraa K Al-Khazraji, J Kevin Shoemaker
Recent evidence indicates that basal cerebral conduit vessels dilate with hypercapnia, with a nitric oxide (NO) mechanism explaining one way in which parenchymal cerebral arterioles dilate. However, whether NO affects basal cerebral artery dilation remains unknown. This study quantified the effect of an exogenous NO donor [sodium nitroglycerin (NTG); 0.4 mg sublingual spray] on the right middle cerebral artery (rMCA) cross-sectional area (CSA), blood velocity and overall blood flow. Measures of vessel CSA (7 Tesla magnetic resonance imaging) and MCA blood velocity (transcranial Doppler ultrasound) were made at baseline (BL), and following exogenous NTG or placebo (PLO) administration in young, healthy individuals (n = 10, 2 males, age range 20-23 years)...
May 15, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/29766469/proteinuric-glomerulopathy-in-an-adolescent-with-a-distal-partial-trisomy-chromosome-1
#10
Takaya Sasaki, Masahiro Okabe, Takeshi Tosaki, Yu Honda, Masahiro Ishikawa, Nobuo Tsuboi, Takashi Yokoo
We report a case of distal partial trisomy 1 from q32.1 to 41 that have exhibited proteinuric glomerulopathy. The patient was a 17-year-old adolescent with clinical features of low birth weight, mild mental retardation and mild deafness, from the birth. He exhibited non-nephrotic range proteinuria with the mild obesity since the age of sixteen. Image studies did not reveal morphological abnormalities of the kidneys. Renal biopsy findings showed no definitive evidence of primary glomerular diseases, and were characterized by a very low glomerular density, glomerulomegaly and focal effacement of podocyte foot processes...
May 16, 2018: CEN Case Reports
https://www.readbyqxmd.com/read/29744193/effectiveness-of-implant-surface-debridement-using-particle-beams-at-differing-air-pressures
#11
Max C T Wei, Carol Tran, Neil Meredith, Laurence James Walsh
Because implant surface decontamination is challenging, air powder abrasive systems have been suggested as an alternative debridement method. This in vitro study investigated the effectiveness of different powder formulations and air pressures in cleaning implant surfaces and the extent of surface damage. A validated ink model of implant biofilm was used. Sterile 4.1 × 10 mm Grade 4 titanium implants were coated in a blue indelible ink to form a uniform, visually detectable biofilm-like layer over the implant threads and mounted into a bone replica material with bony defects to approximate peri-implantitis...
August 2017: Clinical and Experimental Dental Research
https://www.readbyqxmd.com/read/29743433/indium-tin-oxide-nanoparticle-modified-glassy-carbon-electrode-for-electrochemical-sulfide-detection-in-alcoholic-medium
#12
Md Abdul Aziz, Rakan Almadi, Zain Hassan Yamani
An electrochemical sensor based on an indium tin oxide nanoparticle (ITONP)-modified glassy carbon electrode (ITONP/GCE) was developed for the detection of sulfides in alcoholic medium. The ITONP/GCE was prepared by simply dropping the aqueous solution of ITONP on the GCE surface and then drying at 40°C. The homogeneous distribution of ITONP on the GCE surfaces was confirmed by recording the camera photographs and field emission scanning electron microscopic images. The ITONP/GCE was further characterized with energy dispersive X-ray spectrometry, X-ray photoelectron spectroscopy and X-ray diffractometry to identify the surface chemical composition and crystallinity...
2018: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/29742351/in-situ-imaging-the-oxygen-reduction-reactions-of-solid-state-na-o2-batteries-with-cuo-nanowires-as-the-air-cathode
#13
Qiunan Liu, Tingting Yang, Congcong Du, Yongfu Tang, Yong Sun, Peng Jia, Tongde Shen, Qiuming Peng, Jingzhao Chen, Hongjun Ye, Liqiang Zhang, Jian Yu Huang
We report real time imaging of the oxygen reduction reactions (ORRs) in all solid state sodium oxygen batteries (SOBs) with CuO nanowires (NWs) as the air cathode in an aberration-corrected environmental transmission electron microscope under an oxygen environment. The ORR occurred in a distinct two-step reaction: namely a first conversion reaction followed by a second multiple ORRs. In the former, CuO was first converted to Cu2O and then to Cu; in the latter, NaO2 formed first, followed by its disproportionation to Na2O2 and O2...
May 9, 2018: Nano Letters
https://www.readbyqxmd.com/read/29734066/toxicological-investigations-of-naked-and-polymer-entrapped-aot-based-gold-nanotriangles
#14
Ferenc Liebig, Silvia Moreno, Andreas F Thünemann, Achim Temme, Dietmar Appelhans, Joachim Koetz
Negatively charged ultrathin gold nanotriangles (AuNTs) were synthesized in a vesicular dioctyl sodium sulfosuccinate (AOT)/phospholipid-based template phase. These "naked" AuNTs with localized surface plasmon resonances in the NIR region at about 1300 nm and special photothermal properties are of particular interest for imaging and hyperthermia of cancerous tissues. For these kinds of applications the toxicity and the cellular uptake of the AuNTs is of outstanding importance. Therefore, this study focuses on the toxicity of "naked" AOT-stabilized AuNTs compared to polymer-coated AuNTs...
April 30, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29730964/development-of-transethosomes-formulation-for-dermal-fisetin-delivery-box-behnken-design-optimization-in-vitro-skin-penetration-vesicles-skin-interaction-and-dermatokinetic-studies
#15
Thasleem Moolakkadath, Mohd Aqil, Abdul Ahad, Syed Sarim Imam, Babar Iqbal, Yasmin Sultana, Mohd Mujeeb, Zeenat Iqbal
The present study was conducted for the optimization of transethosomes formulation for dermal fisetin delivery. The optimization of the formulation was carried out using "Box-Behnken design". The independent variables were Lipoid S 100, ethanol and sodium cholate. The prepared formulations were characterized for vesicle size, entrapment efficiency and in vitro skin penetration study. The vesicles-skin interaction, confocal laser scanning microscopy and dermatokinetic studies were performed with optimized formulation...
May 7, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29730575/rhelogical-and-antibacterial-performance-of-sodium-alginate-zinc-oxide-composite-coating-for-cellulosic-paper
#16
Wei Wu, Tao Liu, Haibing He, Xihu Wu, Xianwu Cao, Jia Jin, Qijun Sun, Vellaisamy A L Roy, Robert K Y Li
Coating of antibacterial layer on the surface of cellulosic paper has numerous potential applications. In the present work, sodium alginate (SA) served as a binder to disperse Zn2+ and the prepared zinc oxide (ZnO) particles were used as antibacterial agents. The rheology test revealed that there were cross-linking between Zn2+ and SA molecular chains in the aqueous solution, resulting in the viscosity of ZnO/SA composite coating increased in the low shear rate region and decreased in the high shear rate region as compared with pure SA...
May 1, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29727402/targeted-imaging-of-renal-fibrosis-using-antibody-conjugated-gold-nanoparticles-in-renal-artery-stenosis
#17
Xiang-Yang Zhu, Xiangyu Zou, Rahul Mukherjee, Zhicong Yu, Christopher M Ferguson, Wei Zhou, Cynthia H McCollough, Lilach O Lerman
OBJECTIVES: The ability to determine the severity of renal fibrosis, which is involved in most chronic kidney diseases, may be beneficial for monitoring disease progression and management. The aim of this study was to assess a new method involving gold nanoparticles conjugated to an anti-collagen-I antibody (Co-I-AuNPs) as a computed tomography (CT) imaging contrast for the evaluation of renal fibrosis in situ. MATERIALS AND METHODS: Gold nanoparticles conjugated to an anti-collagen-I antibody were prepared using gold chloride reduction with sodium citrate and coated with polyethylene glycol (PEG), and their size was determined by electron microscopy and nanoparticle tracking analysis...
April 28, 2018: Investigative Radiology
https://www.readbyqxmd.com/read/29726679/femtomolar-detection-by-nanocoated-fibre-label-free-biosensors
#18
Francesco Chiavaioli, Pablo Zubiate, Ignacio Del Villar, Carlos Ruiz Zamarreño, Ambra Giannetti, Sara Tombelli, Cosimo Trono, Francisco J Arregui, Ignacio R Matias, Francesco Baldini
The advent of optical fibre-based biosensors combined with that of nanotechnologies has provided an opportunity for developing in situ, portable, lightweight, versatile and high-performance optical sensing platforms. We report on the generation of lossy mode resonances by the deposition of nm-thick metal oxide films on optical fibres, which makes it possible to measure precisely and accurately the changes in optical properties of the fibre-surrounding medium with very high sensitivity compared to other technology platforms, such as long period gratings or surface plasmon reso-nances, the gold standard in label-free and real-time biomolecular interaction analysis...
May 4, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29720018/microwave-assisted-synthesis-and-evaluation-of-type-1-collagen-apatite-composites-for-dental-tissue-regeneration
#19
Kanwal Ilyas, Saba W Qureshi, Sadia Afzal, Roquyya Gul, Muhammad Yar, Muhammad Kaleem, Abdul S Khan
The aim was to develop an economical and biocompatible collagen-based bioactive composite for tooth regeneration. Acid-soluble collagen was extracted and purified from fish scales. The design was innovated to molecularly tailor the surface charge sites of the nano-apatite providing chemical bonds with the collagen matrix via microwave irradiation technique. The obtained collagen was identified by sodium dodecyl sulfate polyacrylamide gel electrophoresis analysis. The composites were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis/differential scanning calorimetry, and scanning electron microscopy...
January 1, 2018: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29718671/adsorption-of-sds-at-water-dodecane-interface-in-relation-to-the-oil-in-water-emulsion-properties
#20
Sara Llamas, Eva Santini, Libero Liggieri, Fabrizia Salerni, Davide Orsi, Luigi Cristofolini, Francesca Ravera
The control of the behavior of oil in water emulsions requires deepen investigations on the adsorption properties of the emulsion stabilizers at interfaces, being these fundamental to explain the (de)stabilization mechanisms. In this work, we present an extensive study on oil-in-water emulsions stabilized by Sodium Dodecyl Sulfate (SDS) below its critical micellar concentration. Dynamic tensiometry, dilational rheology and electrical conductivity measurements are used to investigate the adsorption properties at the droplet interface, while the ageing of the respective emulsions was investigated by monitoring the macroscopic thickness of the emulsion layer, by micro-imaging and Dynamic Light Scattering (DLS) analysis, to get information on the drop size distribution...
May 2, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
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