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Mohammad T Mazhab-Jafari, Alexis Rohou, Carla Schmidt, Stephanie A Bueler, Samir Benlekbir, Carol V Robinson, John L Rubinstein
Vacuolar-type ATPases (V-ATPases) are ATP-powered proton pumps involved in processes such as endocytosis, lysosomal degradation, secondary transport, TOR signalling, and osteoclast and kidney function. ATP hydrolysis in the soluble catalytic V1 region drives proton translocation through the membrane-embedded VO region via rotation of a rotor subcomplex. Variability in the structure of the intact enzyme has prevented construction of an atomic model for the membrane-embedded motor of any rotary ATPase. We induced dissociation and auto-inhibition of the V1 and VO regions of the V-ATPase by starving the yeast Saccharomyces cerevisiae, allowing us to obtain a ~3...
October 24, 2016: Nature
Tetsuya Nishimoto, Kosuke Mukaigawa, Shigeru Tominaga, Nils Lubbe, Toru Kiuchi, Tomokazu Motomura, Hisashi Matsumoto
The present study was undertaken to construct an algorithm for an advanced automatic collision notification system based on national traffic accident data compiled by Japanese police. While US research into the development of a serious-injury prediction algorithm is based on a logistic regression algorithm using the National Automotive Sampling System/Crashworthiness Data System, the present injury prediction algorithm was based on comprehensive police data covering all accidents that occurred across Japan...
October 21, 2016: Accident; Analysis and Prevention
B C C Khoo, J K Brown, R L Prince
OBJECTIVES: In recent years quantitative computed tomography (QCT) has allowed precise non-invasive, three dimensional, in vivo measurement of hip structure in large numbers of individuals. The effects of ageing on proximal femur structure are reported and implications for the prevention of hip prosthesis loosening and hip fracture considered. DESIGN, SETTING AND PARTICIPANTS: An observational cross-sectional study of proximal femur QCT in 719 unselected female European descent aged 20 to 89 years recruited from US and Australian populations...
2016: PloS One
Max Denis, Adriana Gregory, Mahdi Bayat, Robert T Fazzio, Dana H Whaley, Karthik Ghosh, Sejal Shah, Mostafa Fatemi, Azra Alizad
PURPOSE: The purpose of our study is to correlate quantitatively measured tumor stiffness with immunohistochemical (IHC) subtypes of breast cancer. Additionally, the influence of prognostic histologic features (cancer grade, size, lymph node status, and histological type and grade) to the tumor elasticity and IHC profile relationship will be investigated. METHODS: Under an institutional review board (IRB) approved protocol, B-mode ultrasound (US) and comb-push ultrasound shear elastography (CUSE) were performed on 157 female patients with suspicious breast lesions...
2016: PloS One
Lesley S de Souza, James C Godwin, Mark A Renshaw, Eric Larson
Environmental DNA (eDNA) holds great promise for conservation applications like the monitoring of invasive or imperiled species, yet this emerging technique requires ongoing testing in order to determine the contexts over which it is effective. For example, little research to date has evaluated how seasonality of organism behavior or activity may influence detection probability of eDNA. We applied eDNA to survey for two highly imperiled species endemic to the upper Black Warrior River basin in Alabama, US: the Black Warrior Waterdog (Necturus alabamensis) and the Flattened Musk Turtle (Sternotherus depressus)...
2016: PloS One
Mandeep S Tamber, Dimitrios Nikas, Alexandra Beier, Lissa C Baird, David F Bauer, Susan Durham, Paul Klimo, Alexander Y Lin, Catherine Mazzola, Catherine McClung-Smith, Laura Mitchell, Rachana Tyagi, Ann Marie Flannery
BACKGROUND: No evidence-based guidelines exist on the role of cranial-molding orthosis (helmet) therapy for patients with positional plagiocephaly. OBJECTIVE: To address the clinical question: "Does helmet therapy provide effective treatment for positional plagiocephaly?" and to make treatment recommendations based on the available evidence. METHODS: The US National Library of Medicine Medline database and the Cochrane Library were queried by using MeSH headings and key words relevant to the objective of this systematic review...
November 2016: Neurosurgery
Zhilei Zhao, Seiichiro Jinde, Chihiro Kakiuchi, Kiyoto Kasai
Several recent gene expression studies on schizophrenia, including one using monozygotic twins discordant for the disease, have reported the upregulation of adrenomedullin (ADM), which was initially identified as a vasodilator hormone. It has been hypothesized that upregulation of ADM may be a susceptibility factor for schizophrenia, although the exact role of ADM in the central nervous system remains unclear. In this study, we used a microarray analysis to investigate the changes in global gene expression induced by the administration of exogenous ADM in SK-N-SH cells, which allowed us to evaluate the effects of elevated ADM on the central nervous system...
October 21, 2016: Neuroreport
Narayanan Viswanath
In this study, the expected time required to eradicate HIV-1 completely was found as the conditional absorbing time in a finite state space continuous-time Markov chain model. The Markov chain has two absorbing states: one corresponds to HIV eradication and another representing the possible disaster. This method allowed us to calculate the expected eradication time by solving systems of linear equations. To overcome the challenge of huge dimension of the problem, we applied a novel stop and resume technique...
October 20, 2016: IEEE/ACM Transactions on Computational Biology and Bioinformatics
Gordon Gong, Cassandra C Huey, Coleman Johnson, Debra Curti, Billy U Philips
One of the goals of the Affordable Care Act aims to provide affordable health insurance through the health insurance exchange marketplace (the Marketplace). This study explores enrollments in the Marketplace in Texas and in rural vs urban areas in the East, South, and West regions of the state. Data are derived from the US Census Bureau and the Department of Health and Human Services. A total of 92.7% of eligible non-elderly adult Texans (NEATs) had enrolled in Marketplace insurance as of February 2015. Rural residents were less likely than urban residents to use the Marketplace...
October 1, 2016: Texas Medicine
Adam L Hersh, Katherine E Fleming-Dutra, Daniel J Shapiro, David Y Hyun, Lauri A Hicks
No abstract text is available yet for this article.
October 24, 2016: JAMA Internal Medicine
Cunlin Wang, Robert Kane, Mark Levenson, Jeffrey Kelman, Michael Wernecke, Joo-Yeon Lee, Steven Kozlowski, Carmen Dekmezian, Zhiwei Zhang, Aliza Thompson, Kimberly Smith, Yu-Te Wu, Yuqin Wei, Yoganand Chillarige, Qin Ryan, Chris Worrall, Thomas E MaCurdy, David J Graham
Importance: In 2011, the US Centers for Medicare & Medicaid Services (CMS) changed its reimbursement policy for hemodialysis to a bundled comprehensive payment system that included the cost of erythrocyte-stimulating agents (ESAs). Also in 2011, the US Food and Drug Administration revised the drug label for ESAs, recommending more conservative dosing in patients with chronic kidney disease. In response to concerns that these measures could have adverse effects on patient care and outcomes, the CMS and the FDA initiated a collaboration to assess the effect...
October 24, 2016: JAMA Internal Medicine
Teryl K Nuckols, Emmett Keeler, Sally C Morton, Laura Anderson, Brian Doyle, Marika Booth, Roberta Shanman, Jonathan Grein, Paul Shekelle
Importance: Although quality improvement (QI) interventions can reduce central-line-associated bloodstream infections (CLABSI) and catheter-related bloodstream infections (CRBSI), their economic value is uncertain. Objective: To systematically review economic evaluations of QI interventions designed to prevent CLABSI and/or CRBSI in acute care hospitals. Evidence Review: A search of Ovid MEDLINE, Econlit, Centre for Reviews & Dissemination, New York Academy of Medicine's Grey Literature Report, Worldcat, prior systematic reviews (January 2004 to July 2016), and IDWeek conference abstracts (2013-2016), was conducted from 2013 to 2016...
October 24, 2016: JAMA Internal Medicine
Joannie Lortet-Tieulent, Ann Goding Sauer, Rebecca L Siegel, Kimberly D Miller, Farhad Islami, Stacey A Fedewa, Eric J Jacobs, Ahmedin Jemal
Importance: State-specific information about the health burden of smoking is valuable because state-level initiatives are at the forefront of tobacco control. Smoking-attributable cancer mortality estimates are currently available nationally and by cancer, but not by state. Objective: To calculate the proportion of cancer deaths among adults 35 years and older that were attributable to cigarette smoking in 2014 in each state and the District of Columbia. Design, Setting, and Participants: The population-attributable fraction (PAF) of cancer deaths due to cigarette smoking was computed using relative risks for 12 smoking-related cancers (acute myeloid leukemia and cancers of the oral cavity and pharynx; esophagus; stomach; colorectum; liver; pancreas; larynx; trachea, lung, and bronchus; cervix uteri; kidney and renal pelvis; and urinary bladder) from large US prospective studies and state-specific smoking prevalence data from the Behavioral Risk Factor Surveillance System...
October 24, 2016: JAMA Internal Medicine
Taro Yamashita, Kentaro Waki, Shigehito Miki, Robert A Kirkwood, Robert H Hadfield, Hirotaka Terai
We present superconducting nanowire single-photon detectors (SSPDs) on non-periodic dielectric multilayers, which enable us to design a variety of wavelength dependences of optical absorptance by optimizing the dielectric multilayer. By adopting a robust simulation to optimize the dielectric multilayer, we designed three types of SSPDs with target wavelengths of 500 nm, 800 nm, and telecom range respectively. We fabricated SSPDs based on the optimized designs for 500 and 800 nm, and evaluated the system detection efficiency at various wavelengths...
October 24, 2016: Scientific Reports
Li Yang, Zan-Sheng Zheng, Fang Cheng, Xiao Ruan, De-An Jiang, Cun-De Pan, Qiang Wang
Seasonal variations of the phytochemicals contents in needles of T. wallichiana var. mairei due to the effects of growth meteorological parameters were investigated in this study. The needles of T. wallichiana var. mairei were collected from different months and the contents of taxoids (paclitaxel, 10-deacetylbaccatin III (10-DAB), baccatin III, cephalomannine, 10-deacetyltaxol (10-DAT)), flavones (ginkgetin, amentoflavone, quercetin) and polysaccharides were quantified by ultra performance liquid chromatography (UPLC) and the resonance light scattering (RIL) method...
October 20, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Vera L Tunitskaya, Olesja V Eliseeva, Vladimir T Valuev-Elliston, Daria A Tyurina, Natalia F Zakirova, Olga A Khomich, Martins Kalis, Oleg E Latyshev, Elizaveta S Starodubova, Olga N Ivanova, Sergey N Kochetkov, Maria G Isaguliants, Alexander V Ivanov
Hepatitis delta virus (HDV) is a viroid-like blood-borne human pathogen that accompanies hepatitis B virus infection in 5% patients. HDV has been studied for four decades; however, the knowledge on its life-cycle and pathogenesis is still sparse. The studies are hampered by the absence of the commercially-available HDV-specific antibodies. Here, we describe a set of reproducible methods for the expression in E. coli of His-tagged small antigen of HDV (S-HDAg), its purification, and production of polyclonal anti-S-HDAg antibodies in rabbits...
October 20, 2016: International Journal of Molecular Sciences
Eisuke Chikayama, Ryo Yamashina, Keiko Komatsu, Yuuri Tsuboi, Kenji Sakata, Jun Kikuchi, Yasuyo Sekiyama
Foods from agriculture and fishery products are processed using various technologies. Molecular mixture analysis during food processing has the potential to help us understand the molecular mechanisms involved, thus enabling better cooking of the analyzed foods. To date, there has been no web-based tool focusing on accumulating Nuclear Magnetic Resonance (NMR) spectra from various types of food processing. Therefore, we have developed a novel web-based tool, FoodPro, that includes a food NMR spectrum database and computes covariance and correlation spectra to tasting and hardness...
October 19, 2016: Metabolites
Ryuichi Doizaki, Junji Watanabe, Maki Sakamoto
Several pairs of Japanese adjective words pertaining to a material's properties, such as roughness and hardness, have been used in Japanese studies to quantitatively evaluate variations in tactile sensations. This method asks observers to analyze their perceptual experiences one by one. An alternative notion is that human perceptual recognition is performed as a whole rather than by using fragmented factors. Based on this notion, we propose a system that can automatically estimate multidimensional ratings of touch from a single sound-symbolic word that has been spontaneously and intuitively expressed by a user...
October 18, 2016: IEEE Transactions on Haptics
Kathleen Marie Burchhardt, Megan E Miller, William O Cline, Marc Cubeta
The fungus Monilinia vaccinii-corymbosi (Mvc), a pathogen of Vaccinium spp., requires asexual and sexual spore production to complete its life cycle. A recent study found population structuring of Mvc over a broad spatial scale in the US. In this study, we examined fine-scale genetic structuring, temporal dynamics, and reproductive biology within a 125 x 132m blueberry plot from 2010 to 2012. A total of 395 isolates of Mvc were sampled from infected shoots and fruits to examine their multilocus haplotype (MLH) using microsatellite markers...
October 24, 2016: Phytopathology
A Sangion, P Gramatica
Pharmaceutical and Personal Care Products (PPCPs) became a class of contaminants of emerging concern because are ubiquitously detected in surface water and soil, where they can affect wildlife. Ecotoxicological data are only available for a few PPCPs, thus modelling approaches are essential tools to maximize the information contained in the existing data. In silico methods may be helpful in filling data gaps for the toxicity of PPCPs towards various ecological indicator organisms. The good correlation between toxicity toward Daphnia magna and those on two fish species (Pimephales promelas and Oncorhynchus mykiss), improved by the addition of one theoretical molecular descriptor, allowed us to develop predictive models to investigate the relationship between toxicities in different species...
October 2016: SAR and QSAR in Environmental Research
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