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Andrew B Schenkel, Ivy Peltz, Analia Veitz-Keenan
BACKGROUND: Resin-based composite (RBC) is currently accepted as a viable material for the restoration of caries for posterior permanent teeth requiring surgical treatment. Despite the fact that the thermal conductivity of the RBC restorative material closely approximates that of natural tooth structure, postoperative hypersensitivity is sometimes still an issue. Dental cavity liners have historically been used to protect the pulp from the toxic effects of some dental restorative materials and to prevent the pain of thermal conductivity by placing an insulating layer between restorative material and the remaining tooth structure...
October 25, 2016: Cochrane Database of Systematic Reviews
Cheng-Feng Chiang, Mike Flint, Jin-Mann S Lin, Christina F Spiropoulou
Andes virus (ANDV) is the major cause of hantavirus pulmonary syndrome (HPS) in South America. Despite a high fatality rate (up to 40%), no vaccines or antiviral therapies are approved to treat ANDV infection. To understand the role of endocytic pathways in ANDV infection, we used 3 complementary approaches to identify cellular factors required for ANDV entry into human lung microvascular endothelial cells. We screened an siRNA library targeting 140 genes involved in membrane trafficking, and identified 55 genes required for ANDV infection...
2016: PloS One
Lital Meir-Gruber, Yossi Manor, Shiraz Gefen-Halevi, Musa Y Hindiyeh, Fernando Mileguir, Roberto Azar, Gill Smollan, Natasha Belausov, Galia Rahav, Ari Shamiss, Ella Mendelson, Nathan Keller
The presence of pan-resistant bacteria worldwide possesses a threat to global health. It is difficult to evaluate the extent of carriage of resistant bacteria in the population. Sewage sampling is a possible way to monitor populations. We evaluated the presence of pan-resistant bacteria in Israeli sewage collected from all over Israel, by modifying the pour plate method for heterotrophic plate count technique using commercial selective agar plates. This method enables convenient and fast sewage sampling and detection...
2016: PloS One
Pablo Gella, Margarita Salas, Mario Mencía
Many different DNA delivery vehicles have been developed and tested, all with their advantages and disadvantages. The bacteriophage phi29 terminal protein (TP) is covalently linked to the 5' ends of the phage genome during the DNA replication process. Our approach is to utilize this TP as a platform to incorporate different protein or peptide modules that can target the DNA to the interior of the cell, to the nucleus, or even to subcellular compartments. In order to be able to insert different peptide modules on the TP sequence to endow it with desired functions and/or eliminate unwanted regions of the protein, we have carried out a transposition screening to detect insertion-permissive points on the sequence of the TP...
2016: PloS One
Shi-Peng Chen, Chih-Hsien Kuo, Hsueh-Han Lu, Hui-Shan Lo, Kai-Wun Yeh
IbNAC1 is known to activate the defense system by reprogramming a genetic network against herbivory in sweet potato. This regulatory activity elevates plant defense potential but relatively weakens plants by IbNAC1-mediated JA response. The mechanism controlling IbNAC1 expression to balance plant vitality and survival remains unclear. In this study, a wound-responsive G-box cis-element in the IbNAC1 promoter from -1484 to -1479 bp was identified. From a screen of wound-activated transcriptomic data, one transcriptional activator, IbbHLH3, and one repressor, IbbHLH4, were selected that bind to and activate or repress, respectively, the G-box motif in the IbNAC1 promoter to modulate the IbNAC1-mediated response...
October 2016: PLoS Genetics
Firas Zahr Eldeen, Garrett R Roll, Carlos Derosas, Rajashankar Rao, Muhammad S Khan, Bridget K Gunson, James Hodson, Hynek Mergental, Ben-Hur Ferraz-Neto, John Isaac, Paolo Muiesan, Darius F Mirza, Asim Iqbal, M Thamara P R Perera
BACKGROUND: Whilst causes of hepatic artery thrombosis (HAT) after liver transplantation (LT) are multifactorial, early HAT (E-HAT) remains pertinent complication impacting on graft and patient survival. Currently there is no screening tool that would identify patients with increased risk of developing E-HAT. METHODS: We analyzed the native procoagulant state of LT recipients, identified through pretransplant thromboelastographic (TEG) data among other known risk factors, to identify risk factors for E-HAT...
November 2016: Transplantation
Vanessa Pereira Lima, Vinicius C Iamonti, Marcelo Velloso, Tania Janaudis-Ferreira
PURPOSE: The mechanisms underlying physiological limitations during arm activity in individuals with chronic obstructive pulmonary disease (COPD) are unknown. The objective of this systematic review was to describe cardiorespiratory responses, symptoms, chest wall kinematics, muscle activity, and lung volumes during arm activity in individuals with COPD relative to the responses of healthy controls. METHODS: Original research articles that compared cardiorespiratory responses, symptoms, muscle activity, chest wall kinematics, and lung function during arm activity between individuals with COPD and healthy controls were identified after searches of 5 electronic databases and reference lists of pertinent articles...
November 2016: Journal of Cardiopulmonary Rehabilitation and Prevention
Emma Dargie, Ronald R Holden, Caroline F Pukall
Millions suffer from chronic vulvar pain (ie, vulvodynia). Vulvodynia represents the intersection of 2 difficult subjects for health care professionals to tackle: sexuality and chronic pain. Those with chronic vulvar pain are often uncomfortable seeking help, and many who do so fail to receive proper diagnoses. The current research developed a multidimensional assessment questionnaire, the Vulvar Pain Assessment Questionnaire (VPAQ) inventory, to assist in the assessment and diagnosis of those with vulvar pain...
August 1, 2016: Pain
Yamou Wu, Chengyong Gu, Xiaochen Huang
This present study was aimed to investigate the molecular mechanisms involved in sevoflurane protection of hepatic ischemia-reperfusion (I/R) injury. Firstly, we investigated the protective effects of sevoflurane against hepatic I/R injury. Biochemical analysis results showed that sevoflurane preconditioning significantly protected against hepatic I/R injury by reducing liver enzymes and improving antioxidant defense markers. We also found that sevoflurane attenuates I/R-induced hepatic cell death, by TUNEL staining, DNA fragmentation ELISA and PARP activity determination...
October 22, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
E E Jedy-Agba, E O Dareng, S N Adebamowo, M Odutola, E A Oga, F Igbinoba, T Otu, E Ezeome, F Bray, R Hassan, C A Adebamowo
INTRODUCTION: HPV attributable cancers are the second most common infection-related cancers worldwide, with much higher burden in less developed regions. There are currently no country-specific estimates of the burden of these cancers in Nigeria just like many other low and middle income countries. METHODS: In this study, we quantified the proportion of the cancer burden in Nigeria that is attributable to HPV infection from 2012 to 2014 using HPV prevalence estimated from previous studies and data from two population based cancer registries (PBCR) in Nigeria...
October 22, 2016: Cancer Epidemiology
Sarah E Clark, Jeanette E Purcell, Saad Sammani, Earl K Steffen, Marcus J Crim, Robert S Livingston, Cynthia Besch-Williford, Jeffrey D Fortman
A group studying acute lung injury observed an increased percentage of neutrophils in the bronchoalveolar lavage (BAL) fluid of mice. BAL was performed, and lung samples were collected sterilely from 5 C57BL/6 mice that had been bred inhouse. Pure colonies of bacteria, initially identified as Bordetella hinzii were cultured from 2 of the 5 mice which had the highest percentages of neutrophils (21% and 26%) in the BAL fluid. Subsequent sequencing of a portion of the ompA gene from this isolate demonstrated 100% homology with the published B...
2016: Comparative Medicine
James P Gaska, Steven T Wright, Marc D Winterbottom, Steven C Hadley
INTRODUCTION: Although there are numerous studies that demonstrate that color vision deficient (CVD) individuals perform less well than color vision normal (CVN) individuals in tasks that require discrimination or identification of colored stimuli, there remains a need to quantify the relationship between the type and severity of CVD and performance on operationally relevant tasks. METHODS: Participants were classified as CVN (N = 45) or CVD (N = 49) using the Rabin cone contrast test, which is the standard color vision screening test used by the United States Air Force...
2016: Aerospace Medicine and Human Performance
Mark Hoppé, Ottmar F Hueter, Andy Bywater, Philip Wege, Peter Maienfisch
Malaria is a vector-borne and life-threatening disease caused by parasites that are transmitted to people through the bites of infected female Anopheles mosquitoes. The vector control insecticide market represents a small fraction of the crop protection market and is estimated to be valued at up to $500 million at the active ingredient level. Insecticide resistance towards the current WHOPES-approved products urgently requires the development of new tools to protect communities against the transmission of malaria...
October 2016: Chimia
Ottmar F Hueter, Mark Hoppé, Philip Wege, Peter Maienfisch
A significant proportion of the world's population remains at risk from malaria, and whilst great progress has been made in reducing the number of malaria cases globally through the use of vector control insecticides, these gains are under threat from the emergence of insecticide resistance. The spread of resistance in the vector populations, principally to pyrethroids, is driving the need for the development of new tools for malaria vector control. In order to identify new leads 30,000 compounds from the Syngenta corporate chemical collection were tested in a newly developed screening platform...
October 2016: Chimia
James A Turner, Colin N E Ruscoe, Trevor R Perrior
This report provides an outline of a program for the discovery of new public health insecticides for malaria vector control. The status of malaria vector control is first reviewed in terms of the chemical, physical chemical, and biochemical properties of the current WHOPES-recommended and approved vector control agents. This review provides a basis for a discussion on the critical need for discovery and development of multiple new chemical malaria vector control agents with novel and diverse modes of action...
October 2016: Chimia
Jorge Regueiro, Noelia Negreira, Marc H G Berntssen
Ion mobility spectrometry allows for the measurement of the collision cross section (CCS), which provides information about the shape of an ionic molecule in the gas phase. While the hyphenation of travelling-wave ion mobility spectrometry (TWIMS) with high-resolution quadrupole time-of-flight mass spectrometry (QTOFMS) has been mainly used for structural elucidation purposes, its potential for fast screening of small molecules in complex samples has not yet been thoroughly evaluated. The current work explores the capabilities of ultra-high performance liquid chromatography (UHPLC) coupled to a new design TWIMS-QTOFMS for the screening and identification of a large set of pesticides in complex salmon feed matrices...
October 25, 2016: Analytical Chemistry
Ross S Firestone, Scott A Cameron, Peter C Tyler, Rodrigo Gay Ducati, Adam Z Spitz, Vern L Schramm
5'-Methylthioadenosine phosphorylase (MTAP) and 5'-methylthioadenosine nucleosidase (MTAN) catalyze the phosphorolysis and hydrolysis of 5'-methylthioadenosine (MTA), respectively. Both enzymes have low KM values for their substrates. Kinetic assays for these enzymes are challenging, as the ultraviolet absorbance spectra for reactant MTA and product adenine are similar. We report a new assay using 2-amino-5'-methylthioadenosine (2AMTA) as an alternative substrate for MTAP and MTAN enzymes. Hydrolysis or phosphorolysis of 2AMTA forms 2,6-diaminopurine, a fluorescent and easily quantitated product...
October 25, 2016: Analytical Chemistry
John F Ouyang, Ryan P A Bettens
Many-body effects are required for an accurate description of both structure and dynamics of large chemical systems. However, there are numerous such interactions to consider and it is not obvious which ones are significant. We provide a general and fast method for establishing which small set of three- and four-body interactions are important. This is achieved by estimating the maximum many-body effects, $\epsilon_\mathrm{max}$, that can arise in a given arrangement of bodies. Through careful analysis of $\epsilon_\mathrm{max}$ we find two overall causes for significant many-body interactions...
October 25, 2016: Journal of Chemical Theory and Computation
Fumiaki Shima, Hirokazu Narita, Ayami Hiura, Hiroshi Shimoda, Mitsuru Akashi
There is considerable global demand for three-dimensional (3D) functional tissues which mimic our native organs and tissues for use as in vitro drug screening systems and in regenerative medicine. In particular, there has been an increasing number of patients who suffer from arterial diseases such as arteriosclerosis. As such, in vitro 3D arterial wall models that can evaluate the effects of novel medicines and a novel artificial graft for the treatment are required. In our previous study, we reported the rapid construction of 3D tissues by employing a Layer-by-Layer (LbL) technique and revealed their potential applications in the pharmaceutical fields and tissue engineering...
October 25, 2016: Journal of Biomedical Materials Research. Part A
Alison Kitson, Erik Elgaard Sorenson
We are experiencing unprecedented change in our health systems. The growing ageing and co-morbid profile of health service users creates a range of challenges around how health systems construct more integrated processes to support recovery to health and provide care. While there is an emphasis upon prevention and screening, the trend will continue to be around providing care and support for individuals, families and communities for chronic and life-style induced diseases. The emphasis will therefore be on the need for evidence-based care as much as evidence-based medicine (or cure)...
October 25, 2016: Journal of Clinical Nursing
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