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https://www.readbyqxmd.com/read/28453779/first-record-of-lutzomyia-lutzomyia-longipalpis-diptera-psychodidae-phlebotominae-on-the-trinational-frontier-brazil-peru-bolivia-of-south-western-amazonia
#1
Diones Antonio Borges, Silvia Maria Guerra Molina, Mara Cristina Pinto, Eunice Aparecida Bianchi Galati, Manuel Cesario, Dennys Ghenry Samillan Ortiz
Na América do Sul, a principal espécie de flebotomíneo envolvido na transmissão de Leishmania infantum chagasi , agente etiológico da Leishmaniose visceral (VL), é Lutzomyia longipalpis (Lutz & Neiva, 1912). Esta espécie já foi registrada na Colômbia, Venezuela, Bolívia, Argentina, Paraguai, Uruguai e Brasil, onde foram registradas em 24 dos 27 estados brasileiros, com exceção do Acre, Amazonas e Santa Catarina. As coletas foram realizadas por um ano (abril de 2013 a março de 2014) utilizando-se armadilhas de luz tipo de CDC em diferentes ambientes no município de Assis Brasil, estado do Acre...
April 25, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28449298/all-silicon-switchable-magnetoelectric-effect-via-interlayer-exchange-coupling
#2
Hang Liu, Jia Tao Sun, Huixia Fu, Peijie Sun, Yuanping Feng, Sheng Meng
The magnetoelectric (ME) effect originating from the effective coupling between electric field and magnetism is an exciting frontier in nanoscale science such as magnetic tunneling junction (MTJ), ferroelectric/piezoelectric heterojunctions etc. The realization of switchable ME effect under external electric field in d^0 semiconducting materials of single composition is needed especially for all-silicon spintronics applications because of its natural compatibility with current industry. We employ the density functional theory (DFT) to reveal that the pristine Si(111)-√3×√3R30º (Si√3 hereafter) reconstructed surfaces of thin films with thickness smaller than eleven bilayers support sizeable linear ME effect with switchable direction of magnetic moment under external electric field...
April 27, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28449240/bmp-signaling-in-pulmonary-hypertension-advances-and-therapeutic-implications
#3
Kai Yang, Jian Wang, Wenju Lu
Bone morphogenetic protein (BMP)-mediated signaling pathway plays critical roles in pulmonary hypertension (PH) development and progression. The typical BMP signaling mostly involve BMP ligands, specific transmembrane serine/threonine kinase receptors, cellular responsive kinases and secreted antagonists. As more and more studies have been conducted, the specific protective or pathogenic roles of these molecules within all these subgroups of BMP signaling have been continuously uncovered. Based on these evidences, specific strategies have been designed by targeting these factors as novel treatment approach against PH...
April 27, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28449042/long-noncoding-rna-a-crosslink-in-biological-regulatory-network
#4
Yuwei Zhang, Yang Tao, Qi Liao
Long noncoding RNAs (lncRNAs) had been defined as a novel class of functional RNAs longer than 200 nucleotides around a decade ago. It is widely acknowledged that lncRNAs play a significant role in regulation of gene expression, but the biological and molecular mechanisms are diverse and complex, and remain to be determined. Especially, the regulatory network of lncRNAs associated with other biological molecules is still a controversial matter, thus becoming a new frontier of the studies on transcriptome. Recent advance in high-throughput sequencing technologies and bioinformatics approaches may be an accelerator to lift the mysterious veil...
April 24, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28448184/erythropoietin-mediates-brain-vascular-kidney-crosstalk-and-may-be-a-treatment-target-for-pulmonary-and-resistant-essential-hypertension
#5
Emine Meltem Onal, Alan Alper Sag, Oguzhan Sal, Aslihan Yerlikaya, Baris Afsar, Mehmet Kanbay
Organ crosstalk pathways represent the next frontier for target-mining in molecular medicine for existing syndromes. Pulmonary hypertension and resistant essential hypertension are syndromes that have been proven elusive in etiology, and frequently refractory to first-line management. Underlying crosstalk mechanisms, not yet considered in these treatments, may hinder outcomes or unlock novel treatments. This review focuses systematically on erythropoietin, a synthesizable molecule, as a mediator of brain-kidney crosstalk...
2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28447296/addressing-the-needs-of-children-and-youth-in-the-context-of-war-and-terrorism-the-technological-frontier
#6
REVIEW
Leia Y Saltzman, Levi Solomyak, Ruth Pat-Horenczyk
This paper reviews recent literature on the mental health needs of youth in the context of war and terrorism. A human rights lens is used to explore issues of accessibility and sustainability in service utilization during times of crisis. The authors present the evolution of services over the last several decades, progressing through individual, school-based, and community-wide interventions by exploring models that focus on symptom reduction and building resilience. This paper highlights the benefits and limitations of traditional intervention methods and proposes a new frontier of intervention development and research...
June 2017: Current Psychiatry Reports
https://www.readbyqxmd.com/read/28446702/alteration-of-cerebrovascular-haemodynamic-patterns-due-to-atrial-fibrillation-an-in-silico-investigation
#7
S Scarsoglio, A Saglietto, M Anselmino, F Gaita, L Ridolfi
There has recently been growing evidence that atrial fibrillation (AF), the most common cardiac arrhythmia, is independently associated with the risk of dementia. This represents a very recent frontier with high social impact for the number of individuals involved and for the expected increase in AF incidence in the next 40 years. Although a number of potential haemodynamic processes, such as microembolisms, altered cerebral blood flow, hypoperfusion and microbleeds, arise as connecting links between the two pathologies, the causal mechanisms are far from clear...
April 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28446330/automated-identification-of-relevant-frontier-orbitals-for-chemical-compounds-and-processes
#8
Christopher J Stein, Markus Reiher
Quantum-chemical multi-configurational methods are required for a proper description of static electron correlation, a phenomenon inherent to the electronic structure of molecules with multiple (near-)degenerate frontier orbitals. Here, we review how a property of these frontier orbitals, namely the entanglement entropy is related to static electron correlation. A subset of orbitals, the so-called active orbital space is an essential ingredient for all multi-configurational methods. We proposed an automated selection of this active orbital space, that would otherwise be a tedious and error prone manual procedure, based on entanglement measures...
April 26, 2017: Chimia
https://www.readbyqxmd.com/read/28445589/a-network-engineering-perspective-on-probing-and-perturbing-cognition-with-neurofeedback
#9
REVIEW
Danielle S Bassett, Ankit N Khambhati
Network science and engineering provide a flexible and generalizable tool set to describe and manipulate complex systems characterized by heterogeneous interaction patterns among component parts. While classically applied to social systems, these tools have recently proven to be particularly useful in the study of the brain. In this review, we describe the nascent use of these tools to understand human cognition, and we discuss their utility in informing the meaningful and predictable perturbation of cognition in combination with the emerging capabilities of neurofeedback...
April 26, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28444391/dual-display-phage-selection-driven-by-co-engagement-of-two-targets-by-two-different-antibody-fragments
#10
Séverine Fagète, Ledicia Botas-Perez, Irène Rossito-Borlat, Kenneth Adea, Franck Gueneau, Ulla Ravn, François Rousseau, Marie Kosco-Vilbois, Nicolas Fischer, Oliver Hartley
Antibody phage display technology has supported the emergence of numerous therapeutic antibodies. The development of bispecific antibodies, a promising new frontier in antibody therapy, could be facilitated by new phage display approaches that enable pairs of antibodies to be co-selected based on co-engagement of their respective targets. We describe such an approach, making use of two complementary leucine zipper domains that heterodimerize with high affinity. Phagemids encoding a first antibody fragment (scFv) fused to phage coat protein via the first leucine zipper are rescued in bacteria expressing a second scFv fused to the second leucine zipper as a soluble periplasmic protein, so that it is acquired by phage during assembly...
April 24, 2017: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/28443335/selective-complexation-of-cyanide-and-fluoride-ions-with-ammonium-boranes-a-theoretical-study-on-sensing-mechanism-involving-intramolecular-charge-transfer-and-configurational-changes
#11
Haamid Rasool Bhat, Prakash Chandra Jha
The anion binding selectivity and the recognition mechanism of two isomeric boranes namely 4-[bis(2,4,6-trimethylphenyl)boranyl]-N,N,N-trimethylaniline ([p-(Mes2B)C6H4(NMe3)]+, 1, where 'Mes' represents mesitylene and 'Me' represents methyl) and 2-[bis(2,4,6-trimethylphenyl)boranyl]-N,N,N-trimethylaniline ([o-(Mes2B)C6H4(NMe3)]+, 2) has been investigated using density functional theory (DFT) and time dependent-density functional theory (TD-DFT) methods. Natural population analysis indicates that the central boron atoms in 1 and 2 are the most active centers for nucleophilic addition of anions...
April 26, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28443278/saliva-liquid-biopsy-for-point-of-care-applications
#12
REVIEW
Katri Aro, Fang Wei, David T Wong, Michael Tu
Saliva is a non-invasive biofluid, which is easy to collect, transport, and store. Because of its accessibility and connection to systemic diseases, saliva is one of the best candidates for the advancement of point-of-care medicine, where individuals are able to easily monitor their health status by using portable convenient tools such as smartphones. There are a variety of scenarios with which saliva can be used: studies have been conducted on using saliva to measure stress hormones, enzyme levels, developmental disease biomarkers, and even cancer mutations...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28442191/barriers-to-single-dose-levonorgestrel-only-emergency-contraception-access-in-retail-pharmacies
#13
Van Mimi Chau, Carol A Stamm, Laura Borgelt, Michelle Gaffaney, Alia Moore, Rachel Z Blumhagen, Leanne Rupp, Daniel Topp, Christine Gilroy
OBJECTIVES: In February 2014, the Food and Drug Administration updated its regulations to make all single-dose levonorgestrel-only emergency contraception (LNG-EC) available over the counter. This study examines the availability and access to LNG-EC shortly after this policy change, and any additional barriers to obtaining LNG-EC in Colorado retail pharmacies. STUDY DESIGN: From June to July 2014, three female interviewers posing as women seeking LNG-EC conducted a telephone survey of all 633 Colorado retail pharmacies listed in The Little Blue Book (2014) phone directory...
April 23, 2017: Women's Health Issues: Official Publication of the Jacobs Institute of Women's Health
https://www.readbyqxmd.com/read/28439247/when-corporate-social-responsibility-csr-meets-organizational-psychology-new-frontiers-in-micro-csr-research-and-fulfilling-a-quid-pro-quo-through-multilevel-insights
#14
David A Jones, Chelsea R Willness, Ante Glavas
Researchers, corporate leaders, and other stakeholders have shown increasing interest in Corporate Social Responsibility (CSR)-a company's discretionary actions and policies that appear to advance societal well-being beyond its immediate financial interests and legal requirements. Spanning decades of research activity, the scholarly literature on CSR has been dominated by meso- and macro-level perspectives, such as studies within corporate strategy that examine relationships between firm-level indicators of social/environmental performance and corporate financial performance...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28437016/electromechanical-nanogenerator-cell-interaction-modulates-cell-activity
#15
Gonzalo Murillo, Andreu Blanquer, Carolina Vargas-Estevez, Lleonard Barrios, Elena Ibáñez, Carme Nogués, Jaume Esteve
Noninvasive methods for in situ electrical stimulation of human cells open new frontiers to future bioelectronic therapies, where controlled electrical impulses could replace the use of chemical drugs for disease treatment. Here, this study demonstrates that the interaction of living cells with piezoelectric nanogenerators (NGs) induces a local electric field that self-stimulates and modulates their cell activity, without applying an additional chemical or physical external stimulation. When cells are cultured on top of the NGs, based on 2D ZnO nanosheets, the electromechanical NG-cell interactions stimulate the motility of macrophages and trigger the opening of ion channels present in the plasma membrane of osteoblast-like cells (Saos-2) inducing intracellular calcium transients...
April 24, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28436590/identification-of-small-molecules-using-accurate-mass-ms-ms-search
#16
REVIEW
Tobias Kind, Hiroshi Tsugawa, Tomas Cajka, Yan Ma, Zijuan Lai, Sajjan S Mehta, Gert Wohlgemuth, Dinesh Kumar Barupal, Megan R Showalter, Masanori Arita, Oliver Fiehn
Tandem mass spectral library search (MS/MS) is the fastest way to correctly annotate MS/MS spectra from screening small molecules in fields such as environmental analysis, drug screening, lipid analysis, and metabolomics. The confidence in MS/MS-based annotation of chemical structures is impacted by instrumental settings and requirements, data acquisition modes including data-dependent and data-independent methods, library scoring algorithms, as well as post-curation steps. We critically discuss parameters that influence search results, such as mass accuracy, precursor ion isolation width, intensity thresholds, centroiding algorithms, and acquisition speed...
April 24, 2017: Mass Spectrometry Reviews
https://www.readbyqxmd.com/read/28436509/covering-the-optical-spectrum-through-collective-rare-earth-doping-of-nagdf4-nanoparticles-806-and-980-nm-excitation-routes
#17
A Skripka, R Marin, A Benayas, P Canton, E Hemmer, F Vetrone
Today, at the frontier of biomedical research, the need has been clearly established for integrating disease detection and therapeutic function in one single theranostic system. Light-emitting nanoparticles are being intensively investigated to fulfil this demand, by continuously developing nanoparticle systems simultaneously emitting in both the UV/visible (light-triggered release and activation of drugs) and the near-infrared (imaging and tracking) spectral regions. In this work, rare-earth (RE) doped nanoparticles (RENPs) were synthesized via a thermal decomposition process and spectroscopically investigated as potential candidates as all-in-one optical imaging, diagnostic and therapeutic agents...
April 24, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28436470/new-frontiers-in-translational-control-of-the-cancer-genome
#18
Morgan L Truitt, Davide Ruggero
No abstract text is available yet for this article.
April 24, 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28434772/neurointerventional-staffing-the-next-frontier
#19
EDITORIAL
Karl-Olof Lövblad, Laurie Bouchez, Amine M Korchi, Zsolt Kulcsar
No abstract text is available yet for this article.
April 20, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28434425/augmented-reality-in-neurosurgery-a-review-of-current-concepts-and-emerging-applications
#20
Daipayan Guha, Naif M Alotaibi, Nhu Nguyen, Shaurya Gupta, Christopher McFaul, Victor X D Yang
Augmented reality (AR) superimposes computer-generated virtual objects onto the user's view of the real world. Among medical disciplines, neurosurgery has long been at the forefront of image-guided surgery, and it continues to push the frontiers of AR technology in the operating room. In this systematic review, we explore the history of AR in neurosurgery and examine the literature on current neurosurgical applications of AR. Significant challenges to surgical AR exist, including compounded sources of registration error, impaired depth perception, visual and tactile temporal asynchrony, and operator inattentional blindness...
April 24, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
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