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Zühre Uz, Arnoud W Kastelein, Dan M J Milstein, Dan Liu, Fadi Rassam, Denise P Veelo, Jan-Paul W R Roovers, Can Ince, Thomas M van Gulik
BACKGROUND/AIMS: This study describes the peritoneal microcirculation, compares quantitative parameters and angioarchitecture to the standard of sublingual microcirculatory assessment, and determines the practical feasibility of this method. METHODS: Incident dark field imaging was performed of the peritoneum and sublingually to determine angioarchitecture, total and perfused vessel density (TVD and PVD), the proportion of perfused vessels (PPV), the microvascular flow index (MFI) and image acquisition time...
May 18, 2018: Journal of Vascular Research
Yasser Al-Khadra, Fahed Darmoch, Motaz Baibars, Amir Kaki, Zaher Fanari, M Chadi Alraies
BACKGROUND: The concomitant presence of mitral stenosis (MS) in the setting of symptomatic aortic stenosis represent a clinical challenge. Little is known regarding the outcome of mitral stenosis (MS) patients undergoing transcatheter aortic valve replacement (TAVR) or surgical aortic valve replacement (SAVR). Therefore, we sought to study the outcome of MS patients undergoing aortic valve replacement (AVR). METHOD: Using weighted data from the National Inpatient Sample (NIS) database between 2011 and 2014, we identified patients who were diagnosed with MS...
May 17, 2018: Journal of Interventional Cardiology
Linqiu Li, Run Long, Oleg V Prezhdo
Two-dimensional transition metal dichalcogenides (TMDs) have drawn strong attention due to their unique properties and diverse applications. However, TMD performance depends strongly on material quality and defect morphology. Experiments show that samples grown by chemical vapor deposition (CVD) outperform those obtained by physical vapor deposition (PVD). Experiments also show that CVD samples exhibit vacancy defects, while antisite defects are frequently observed in PVD samples. Our time-domain ab initio study demonstrates that both antisites and vacancies accelerate trapping and nonradiative recombination of charge carriers, but antisites are much more detrimental than vacancies...
May 18, 2018: Nano Letters
Yanbing Han, Bethany E Matthews, Dennice M Roberts, Kevin Talley, Sage Bauers, Craig L Perkins, Qun Zhang, Andriy Zakutayev
High throughput synthesis and characterization methods can significantly accelerate the rate of experimental research. For physical vapor deposition (PVD), high throughput synthesis methods include combinatorial sputtering with intentional gradients of metal/metalloid composition, temperature, and thickness across the substrate. However, many other synthesis parameters still remain out of reach for combinatorial methods. In this paper, we extend combinatorial sputtering parameters to include gradients of gaseous elements in thin films...
May 17, 2018: ACS Combinatorial Science
Alice Hazotte, Olivier Péron, Pierre Gaudin, Abdesselam Abdelouas, Thierry Lebeau
With the aim of improving the phytoextraction rate of cesium (Cs), the effect of Pseudomonas fluorescens ATCC 17400 and its siderophore pyoverdine (PVD) on the uptake of Cs by red clover was studied in soil pots. This work also provides a mechanistic understanding of the Cs-bacteria (or PVD)-illite-plant interactions by using a simplified experimental design, i.e., hydroponics with either Cs in solution or Cs-spiked illite in suspension. For soil spiked with 11.2 mmol kg-1 (1480 mg kg-1 ) of Cs, 0.43% of total Cs was taken up by red clover in 12 days (119 μmol g-1 (16 mg g-1 ) of Cs dry matter in roots and 40 μmol g-1 (5 mg g-1 ) in shoots)...
May 12, 2018: Environmental Science and Pollution Research International
Wei Zou, Xintong Dong, Timothy R Broederdorf, Ao Shen, Daniel A Kramer, Rebecca Shi, Xing Liang, David M Miller, Yang K Xiang, Ryohei Yasuda, Baoyu Chen, Kang Shen
Proper morphogenesis of dendrites plays a fundamental role in the establishment of neural circuits. The molecular mechanism by which dendrites grow highly complex branches is not well understood. Here, using the Caenorhabditis elegans PVD neuron, we demonstrate that high-order dendritic branching requires actin polymerization driven by coordinated interactions between two membrane proteins, DMA-1 and HPO-30, with their cytoplasmic interactors, the RacGEF TIAM-1 and the actin nucleation promotion factor WAVE regulatory complex (WRC)...
May 7, 2018: Developmental Cell
Scott Donald, Hilary Bews, Chantal Asselin, Basem Elbarouni, David Allen, Malek Kass, Siuchan Sookhoo, Davinder S Jassal
Severe aortic stenosis (AS) is considered a contraindication to the use of mechanical circulatory support (MCS) devices, including the Impella heart pump (Abiomed, Aachen, Germany). We describe a case in which a 72-year-old female with severe AS and peripheral vascular disease (PVD) presented with retractable ischemia in the setting of a non-ST elevation myocardial infarction (NSTEMI). Using a coordinated multidisciplinary approach, our case is the first to combine iliac angioplasty, balloon aortic valvuloplasty (BAV), and the insertion of an Impella CP device in the setting of severe AS to facilitate successful coronary artery revascularization in a non-surgical patient...
March 6, 2018: Curēus
Pedro Gil, João Gil, Nuno Oliveira, Inês Laíns, Eduardo Nery Rossi Camilo, Cristina Fonseca, Miguel Raimundo, Maria da Luz Cachulo, Rufino Silva
PURPOSE: To investigate the influence of the vitreoretinal interface on the outcomes of different ranibizumab regimens for exudative age-related macular degeneration. METHODS: We conducted a retrospective subanalysis of 2 prospective clinical trials. Patients were treated with ranibizumab for 12 months according to 3 different regimens: pro-re-nata (PRN), treat and extend (T&E), and monthly. Vitreoretinal interface was assessed for absence (group ON) or presence (group OFF) of posterior vitreous detachment (PVD)...
May 7, 2018: Ophthalmologica. Journal International D'ophtalmologie
Yueting Wu, Jin Sun, Anjie Li, Dandan Chen
Peripheral vascular disease (PVD) is a prevalent vascular disease that affect a large number of patients. The establishment of optimal treatments to mitigate the intimal hyperplasia (IH)-induced restenosis would help relieve the health burden of the PVD. Ribonucleotide reductase M2 (RRM2) is critical to cellular migration and proliferation. We have previously demonstrated that suppression of RRM2 expression could substantially inhibit hepatocellular carcinoma cell proliferation and migration. We hereby developed RRM2 small interfering RNA (siRNA)-loaded cell penetrating peptides-conjugated liposome-polycation-DNA complex (LPD) (RRM2-CLPD), aiming to inhibit the migration and proliferation of vascular smooth muscle cells (VSMCs) crucial for IH...
April 24, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Michelle Lubetzky, Layla Kamal, Maria Ajaimy, Enver Akalin, Liise Kayler
BACKGROUND: The benefits of kidney transplantation in diabetic patients with peripheral vascular disease (PVD) are unclear. While patients may have improved survival compared to dialysis, the burden of care after transplant has not been assessed. METHODS: We performed a retrospective review of adult diabetic kidney-only transplant recipients with and without PVD transplanted from January 2012 until June 30, 2015. RESULTS: Of 203 diabetic kidney transplant recipients, 56 (27...
April 28, 2018: Clinical Transplantation
Matthias Lexow, Timo Talwar, Bettina S J Heller, Benjamin May, Radha G Bhuin, Florian Maier, Hans-Peter Steinrück
Various amounts of the ionic liquids (ILs) [C1C1Im][Tf2N] and [C8C1Im][Tf2N] were deposited in vacuo by physical vapour deposition (PVD) on single crystalline Ag(111) at room temperature and subsequently monitored by angle-resolved X-ray photoelectron spectroscopy (ARXPS) as a function of time. For very low coverages of up to one closed molecular layer, an initial wetting layer was rapidly formed for both ILs. Deposition of higher amounts of [C1C1Im][Tf2N] revealed an initial three-dimensional film morphology...
April 27, 2018: Physical Chemistry Chemical Physics: PCCP
Vincent Offermanns, Ole Z Andersen, Michael Sillassen, Klaus P Almtoft, Inge H Andersen, Frank Kloss, Morten Foss
Purpose: Studies have shown that strontium-doped medical applications benefit bone metabolism leading to improved bone healing and osseointegration. Based on this knowledge, the aim of the study was to evaluate the performance of an implant surface, functionalized by a physical vapor deposition (PVD) coating (Ti-Sr-O), designed to yield predictable release of strontium. The Ti-Sr-O functionalized surface is compared to a routinely used, commercially available surface (SLActive™) with respect to bone-to-implant contact (BIC%) and new bone formation (BF%) in two defined regions of interest (ROI-I and ROI-II, respectively)...
2018: International Journal of Nanomedicine
Kevin Celestrin, Carlos Díaz-Balzac, Leo T H Tang, Brian D Ackley, Hannes E Bülow
The extracellular matrix is essential for various aspects of nervous system patterning. For example, sensory dendrites in flies, worms and fish have been shown to rely on coordinated interactions of tissues with extracellular matrix proteins. Here we show that the conserved basement membrane protein UNC-52/Perlecan is required for establishing the correct number of the highly ordered dendritic trees in the somatosensory neuron PVD in Caenorhabditis elegans. This function of UNC-52/Perlecan is dependent on four conserved immunoglobulin domains, but independent of the known functions of UNC-52/Perlecan in mediating muscle-skin attachment...
April 20, 2018: Development
Chien-Po Liao, Hsun Li, Hsiu-Hsiang Lee, Cheng-Ting Chien, Chun-Liang Pan
Self-avoidance allows sister dendrites from the same neuron to form non-redundant coverage of the sensory territory and is important for neural circuitry functions. Here, we report an unexpected, cell-autonomous role of the Wnt-secretory factor MIG-14/Wntless in mediating dendrite self-avoidance in the C. elegans multidendritic PVD neurons. Similar findings in Drosophila suggest that this novel function of Wntless is conserved. The mig-14 mutant shows defects in dendrite self-avoidance, and ectopic MIG-14 expression triggers dendrite repulsion...
April 18, 2018: Neuron
Arturo Manns, Catalina Valdivieso, Victor Rojas, Constanza Valdés, Valeria Ramírez
STATEMENT OF PROBLEM: Therapeutic procedures that increase occlusal vertical dimension (OVD) may have different responses in patients with different craniofacial vertical patterns. The effect on these patients of increasing their OVD is not well understood. PURPOSE: The purpose of this clinical study was to compare measurements of vertical jaw separation (VJS) in patients with brachyfacial and dolichofacial craniofacial patterns in 2 vertical dimensions: the clinical rest/postural vertical dimension (CR/PVD) and electromyographic rest vertical dimension (EMGRVD)...
April 5, 2018: Journal of Prosthetic Dentistry
Philip T Levy, Meghna D Patel, Swati Choudhry, Aaron Hamvas, Gautam K Singh
OBJECTIVE: To test the hypothesis that echocardiographic markers of pulmonary vascular disease (PVD) exist in asymptomatic infants born preterm at 1-year corrected age. STUDY DESIGN: We conducted a prospective cohort study of 80 infants born preterm (<29 weeks of gestation) and 100 age- and weight-matched infants born at term and compared broad-based conventional and quantitative echocardiographic measures of pulmonary hemodynamics at 1-year corrected age. Pulmonary artery acceleration time (PAAT), a validated index of pulmonary vascular resistance, arterial pressure, and compliance, was used to assess pulmonary hemodynamics...
April 3, 2018: Journal of Pediatrics
Richard J Archer, Andrew J Parnell, Andrew I Campbell, Jonathan R Howse, Stephen J Ebbens
The field of active colloids is attracting significant interest to both enable applications and allow investigations of new collective colloidal phenomena. One convenient active colloidal system that has been much studied is spherical Janus particles, where a hemispherical coating of platinum decomposes hydrogen peroxide to produce rapid motion. However, at present producing these active colloids relies on a physical vapor deposition (PVD) process, which is difficult to scale and requires access to expensive equipment...
February 2018: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
Marios Constantinou, Petros Nikolaou, Loukas Koutsokeras, Apostolos Avgeropoulos, Dimitrios Moschovas, Constantinos Varotsis, Panos Patsalas, Pantelis Kelires, Georgios Constantinides
This study aimed to develop hydrogenated amorphous carbon thin films with embedded metallic nanoparticles (a-C:H:Me) of controlled size and concentration. Towards this end, a novel hybrid deposition system is presented that uses a combination of Plasma Enhanced Chemical Vapor Deposition (PECVD) and Physical Vapor Deposition (PVD) technologies. The a-C:H matrix was deposited through the acceleration of carbon ions generated through a radio-frequency (RF) plasma source by cracking methane, whereas metallic nanoparticles were generated and deposited using terminated gas condensation (TGC) technology...
March 30, 2018: Nanomaterials
Alvise Berti, Eric L Matteson, Cynthia S Crowson, Ulrich Specks, Divi Cornec
OBJECTIVE: To assess the cardiovascular disease (CVD) and venous thromboembolism (VTE) risks among patients with newly diagnosed antineutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV). PATIENTS AND METHODS: A population-based incident AAV cohort of 58 patients diagnosed between 1996 and 2015 in Olmsted County, MN, was identified by medical record review. For each patient, 3 age- and sex-matched non-AAV comparators were randomly selected from the same population and assigned an index date corresponding to the AAV incidence date...
March 24, 2018: Mayo Clinic Proceedings
Tova Ablove, Lauren N Bell, Hong Liang, Richard J Chappell, Hale Z Toklu, Steven H Yale
INTRODUCTION AND HYPOTHESIS: To determine the effectiveness of the muscarinic receptor antagonist solifenacin (VESIcare®) in the treatment of postvoid dribbling (PVD). METHODS: We carried out a multicenter, 12-week, double-blind, randomized, placebo-controlled, parallel design study. Between 2012 and 2015, a total of 118 women (age 18-89 years) with PVD at least twice/weekly, were randomized to receive solifenacin (5 mg; n = 58) or placebo (n = 60) once daily...
March 24, 2018: International Urogynecology Journal
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