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https://www.readbyqxmd.com/read/28644027/speckle-visibility-spectroscopy-of-depolarized-dynamic-light-scattering
#1
David Bossert, Jens Christoph Natterodt, Dominic Andreas Urban, Christoph Weder, Alke Petri-Fink, Sandor Balog
We show that the statistical analysis of the photon counts in depolarized dynamic light scattering experiments allows for the accurate characterization of the rotational Brownian dynamics of particles. Unlike photon correlation spectroscopy, the technique is accurate even at low temporal resolution and enables discontinuous data acquisition, which offers several advantages. To demonstrate the usefulness of the method, we present a case study in which we analyze aqueous suspensions of tunicate cellulose nanocrystals and silica particles, and discuss aspects that are specific to particle sizing...
June 23, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28642343/differential-distribution-of-vapa-positive-rhodococcus-equi-in-affected-and-unaffected-horse-breeding-farms
#2
S Petry, C Sévin, M A Fleury, F Duquesne, N Foucher, C Laugier, M Henry-Amar, J Tapprest
No abstract text is available yet for this article.
June 22, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28639817/a-systematic-review-of-treatments-for-problem-gambling
#3
Nancy M Petry, Meredith K Ginley, Carla J Rash
Gambling problems impact 0.2%-4.0% of the population, and research related to treating gambling has burgeoned in the last decades. This article reviews trials for psychosocial treatments of gambling problems. Using Preferred Reporting Items for Systematic Reviews and Meta-Analyses Standards, we identified 21 randomized trials. Eleven studies evaluated interventions delivered via multisession, in-person therapy: cognitive therapies, cognitive-behavioral (CB) therapies, and motivational interventions (MI) alone or with CB therapies...
June 22, 2017: Psychology of Addictive Behaviors: Journal of the Society of Psychologists in Addictive Behaviors
https://www.readbyqxmd.com/read/28639812/contingency-management-treatment-for-substance-use-disorders-how-far-has-it-come-and-where-does-it-need-to-go
#4
Nancy M Petry, Sheila M Alessi, Todd A Olmstead, Carla J Rash, Kristyn Zajac
Contingency management (CM) interventions consistently improve substance abuse treatment outcomes, yet CM remains a highly controversial intervention and is rarely implemented in practice settings. This article briefly outlines the evidence base of CM and then describes 4 of the most often-cited concerns about it: philosophical, motivational, durability, and economic. Data supporting and refuting each of these issues are reviewed. The article concludes with suggestions to address these matters and other important areas for CM research and implementation, with the aims of improving uptake of this efficacious intervention in practice settings and outcomes of patients with substance use disorders...
June 22, 2017: Psychology of Addictive Behaviors: Journal of the Society of Psychologists in Addictive Behaviors
https://www.readbyqxmd.com/read/28636945/pkn1-directs-polarized-rab21-vesicle-trafficking-via-rph3a-and-is-important-for-neutrophil-adhesion-and-ischemia-reperfusion-injury
#5
Qianying Yuan, Chunguang Ren, Wenwen Xu, Björn Petri, Jiasheng Zhang, Yong Zhang, Paul Kubes, Dianqing Wu, Wenwen Tang
Polarized vesicle transport plays an important role in cell polarization, but the mechanisms underlying this process and its role in innate immune responses are not well understood. Here, we describe a phosphorylation-regulated polarization mechanism that is important for neutrophil adhesion to endothelial cells during inflammatory responses. We show that the protein kinase PKN1 phosphorylates RPH3A, which enhances binding of RPH3A to guanosine triphosphate (GTP)-bound RAB21. These interactions are important for polarized localization of RAB21 and RPH3A in neutrophils, which leads to PIP5K1C90 polarization...
June 20, 2017: Cell Reports
https://www.readbyqxmd.com/read/28636791/isotretinoin-and-lymecycline-treatments-modify-the-skin-microbiota-in-acne
#6
Hanna-Leena Kelhälä, Velma T E Aho, Nanna Fyhrquist, Pedro A B Pereira, Minna E Kubin, Lars Paulin, Riitta Palatsi, Petri Auvinen, Kaisa Tasanen, Antti Lauerma
Oral retinoids and tetracyclines have a major role in acne treatment. Here, we report for the first time the effect of isotretinoin and lymecycline therapy on the skin microbiota in cheek, back and armpit swab samples of acne vulgaris patients using 16S ribosomal RNA (16S rRNA) gene amplicon sequencing. Propionibacterium acnes was the most common in sebaceous areas of healthy and untreated acne skin and more abundant in back than cheek samples. Five taxa, including a Streptococcus taxon, differed significantly between the cheek samples of healthy controls and acne patients, and acne severity was positively correlated with the abundance of Propionibacterium...
June 21, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28633308/prior-season-vaccination-and-risk-of-influenza-during-the-2014-2015-season-in-the-u-s
#7
Jessie R Chung, Brendan Flannery, Richard K Zimmerman, Mary Patricia Nowalk, Michael L Jackson, Lisa A Jackson, Joshua G Petrie, Emily T Martin, Arnold S Monto, Huong Q McLean, Edward A Belongia, Manjusha Gaglani, Alicia M Fry
No abstract text is available yet for this article.
June 13, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28632305/vanadium-hydroxide-cluster-ions-in-the-gas-phase-bond-forming-reactions-of-doubly-charged-negative-ions-by-so2-promoted-v-o-activation
#8
Anna Troiani, Marzio Rosi, Stefania Garzoli, Chiara Salvitti, Giulia de Petris
The gas-phase reactivity of doubly-charged vanadium hydroxides anions with SO2 has been studied by experimental and computational methods. The obtained results highlight the role of sulfur dioxide in promoting unprecedented bond-forming reactions, that produce singly-charged products by breaking the VxOy bone or a terminal V-O bond.
June 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28628797/attenuated-error-related-potentials-in-amyotrophic-lateral-sclerosis-with-executive-dysfunctions
#9
Caroline Seer, Max Joop, Florian Lange, Christian Lange, Reinhard Dengler, Susanne Petri, Bruno Kopp
OBJECTIVE: Executive dysfunctions affect up to 50% of the patients with amyotrophic lateral sclerosis (ALS). Executive dysfunctions have been identified as negative prognostic factor and can affect quality of life in patients and their caregivers. Assessment of executive dysfunction may be impeded by the patients' motor impairments. Event-related potentials (ERP) have been proposed as a tool to overcome these assessment difficulties. The error(-related) negativity (Ne/ERN) is an ERP which can be recorded with minimal motor requirements for the patient...
May 18, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28627768/spatially-resolved-large-magnetization-in-ultrathin-bifeo3
#10
Er-Jia Guo, Jonathan R Petrie, Manuel A Roldan, Qian Li, Ryan D Desautels, Timothy Charlton, Andreas Herklotz, John Nichols, Johan van Lierop, John W Freeland, Sergei V Kalinin, Ho Nyung Lee, Michael R Fitzsimmons
Here, a quantitative magnetic depth profile across the planar interfaces in BiFeO3 /La0.7 Sr0.3 MnO3 (BFO/LSMO) superlattices using polarized neutron reflectometry is obtained. An enhanced magnetization of 1.83 ± 0.16 μB /Fe in BFO layers is observed when they are interleaved between two manganite layers. The enhanced magnetic order in BFO persists up to 200 K. The depth dependence of magnetic moments in BFO/LSMO superlattices as a function of the BFO layer thickness is also explored. The results show the enhanced net magnetic moment in BFO from the LSMO/BFO interface extends 3-4 unit cells into BFO...
June 19, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28626833/the-lung-is-a-host-defense-niche-for-immediate-neutrophil-mediated-vascular-protection
#11
Bryan G Yipp, Jung Hwan Kim, Ronald Lima, Lori D Zbytnuik, Björn Petri, Nick Swanlund, May Ho, Vivian G Szeto, Tamar Tak, Leo Koenderman, Peter Pickkers, Anton T J Tool, Taco W Kuijpers, Timo K van den Berg, Mark R Looney, Matthew F Krummel, Paul Kubes
Bloodstream infection is a hallmark of sepsis, a medically emergent condition requiring rapid treatment. However, upregulation of host defense proteins through toll-like receptors and NFκB requires hours after endotoxin detection. Using confocal pulmonary intravital microscopy, we identified that the lung provides a TLR4-Myd88-and abl tyrosine kinase-dependent niche for immediate CD11b-dependent neutrophil responses to endotoxin and Gram-negative bloodstream pathogens. In an in vivo model of bacteremia, neutrophils crawled to and rapidly phagocytosed Escherichia coli sequestered to the lung endothelium...
April 28, 2017: Science Immunology
https://www.readbyqxmd.com/read/28624485/time-to-take-the-failure-out%C3%A2-of%C3%A2-heart%C3%A2-failure-the-importance-of-optimism
#12
EDITORIAL
John G F Cleland, Pierpaolo Pellicori, Andrew L Clark, Mark C Petrie
No abstract text is available yet for this article.
June 1, 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/28623630/persistency-of-artificial-aeration-at-hypertrophic-lake-tuusulanj%C3%A3-rvi-a-sociohistorical-analysis
#13
Paula Schönach, Petri Tapio, Heidi Holmroos, Jukka Horppila, Juha Niemistö, Nina A Nygrén, Olga Tammeorg, Ilmo Massa
With present-day scientific evidence challenging the efficiency of artificial aeration as an effective restoration method for eutrophicated lakes, our sociohistorical investigation traces the reasons for the persistent support for this method in Finland, where about one hundred lakes are subject to this treatment. Our study employed the concepts of technological path and aeration frame to analyze the extensive restoration and aeration history of the hypertrophic Tuusulanjärvi in southern Finland. Continuously aerated since 1972, it has the longest history of aeration in Finland...
June 16, 2017: Ambio
https://www.readbyqxmd.com/read/28622380/personality-traits-across-countries-support-for-similarities-rather-than-differences
#14
Petri Kajonius, Erik Mac Giolla
In the current climate of migration and globalization, personality characteristics of individuals from different countries have received a growing interest. Previous research has established reliable differences in personality traits across countries. The present study extends this research by examining 30 personality traits in 22 countries, based on an online survey in English with large national samples (NTotal = 130,602). The instrument used was a comprehensive, open-source measure of the Five Factor Model (FFM) (IPIP-NEO-120)...
2017: PloS One
https://www.readbyqxmd.com/read/28621730/hydronopylformamides-modification-of-the-naturally-occurring-compound-%C3%AE-pinene-to-produce-insect-repellent-candidates-against-blattella-germanica
#15
Shengliang Liao, Yan Liu, Hongyan Si, Zhuanquan Xiao, Guorong Fan, Shangxing Chen, Peng Wang, Zongde Wang
The development of a novel repellent plays an important role in the integrated control of Blattella germanica. A series of novel hydronopylformamides derivatives were synthesized from a naturally occurring compound (-)-β-pinene. The structures of these hydronopylformamides derivatives were characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (¹H-NMR and (13)C-NMR), and electron impact mass spectrometry (EI-MS). Repellency of these hydronopylformamides derivatives against Blattella germanica was evaluated by the using petri dish arena method...
June 16, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28620254/isolation-morphological-identification-and-in-vitro-antibacterial-activity-of-endophytic-bacteria-isolated-from-azadirachta-indica-neem-leaves
#16
Ankit Kumar Singh, Rajesh Kumar Sharma, Varsha Sharma, Tanmay Singh, Rajesh Kumar, Dimple Kumari
AIM: The objective of this study was to isolate endophytic bacteria from Azadirachta indica (neem) leaves, their identification and investigate their antibacterial activity against three Gram-positive bacteria, Staphylococcus aureus, Streptococcus pyogenes and Bacillus cereus and Gram-negative bacteria Escherichia coli, Salmonella Typhimurium and Klebsiella pneumoniae. MATERIALS AND METHODS: Fresh leaves of A. indica (neem) was procured from the Department of Botany, JNKVV, Jabalpur...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28617451/biological-and-chemical-strategies-for-exploring-inter-and-intra-kingdom-communication-mediated-via-bacterial-volatile-signals
#17
Mohamed A Farag, Geun Cheol Song, Yong-Soon Park, Bianca Audrain, Soohyun Lee, Jean-Marc Ghigo, Joseph W Kloepper, Choong-Min Ryu
Airborne chemical signals emitted by bacteria influence the behavior of other bacteria and plants. We present an overview of in vitro methods for evaluating bacterial and plant responses to bacterial volatile compounds (BVCs). Three types of equipment have been used to physically separate the bacterial test strains from either other bacterial strains or plants (in our laboratory we use either Arabidopsis or tobacco plant seedlings): a Petri dish containing two compartments (BI Petri dish); two Petri dishes connected with tubing; and a microtiter-based assay...
July 2017: Nature Protocols
https://www.readbyqxmd.com/read/28615262/predictors-of-anemia-in-women-of-reproductive-age-biomarkers-reflecting-inflammation-and-nutritional-determinants-of-anemia-brinda-project
#18
REVIEW
James P Wirth, Bradley A Woodruff, Reina Engle-Stone, Sorrel Ml Namaste, Victor J Temple, Nicolai Petry, Barbara Macdonald, Parminder S Suchdev, Fabian Rohner, Grant J Aaron
Background: Anemia in women of reproductive age (WRA) (age range: 15-49 y) remains a public health problem globally, and reducing anemia in women by 50% by 2025 is a goal of the World Health Assembly.Objective: We assessed the associations between anemia and multiple proximal risk factors (e.g., iron and vitamin A deficiencies, inflammation, malaria, and body mass index) and distal risk factors (e.g., education status, household sanitation and hygiene, and urban or rural residence) in nonpregnant WRA.Design: Cross-sectional, nationally representative data from 10 surveys (n = 27,018) from the Biomarkers Reflecting Inflammation and Nutritional Determinants of Anemia (BRINDA) project were analyzed individually and pooled by the infection burden and risk in the country...
June 14, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28615149/cardiovascular-and-metabolic-effects-of-metformin-in-patients-with-type-1-diabetes-removal-a-double-blind-randomised-placebo-controlled-trial
#19
John R Petrie, Nishi Chaturvedi, Ian Ford, Martijn C G J Brouwers, Nicola Greenlaw, Therese Tillin, Irene Hramiak, Alun D Hughes, Alicia J Jenkins, Barbara E K Klein, Ronald Klein, Teik C Ooi, Peter Rossing, Coen D A Stehouwer, Naveed Sattar, Helen M Colhoun
BACKGROUND: Metformin might reduce insulin requirement and improve glycaemia in patients with type 1 diabetes, but whether it has cardiovascular benefits is unknown. We aimed to investigate whether metformin treatment (added to titrated insulin therapy) reduced atherosclerosis, as measured by progression of common carotid artery intima-media thickness (cIMT), in adults with type 1 diabetes at increased risk for cardiovascular disease. METHODS: REMOVAL was a double-blind, placebo-controlled trial undertaken at 23 hospital diabetes clinics in five countries (Australia, Canada, Denmark, the Netherlands, and the UK)...
June 9, 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/28614606/antagonism-of-trichoderma-isolates-against-leucoagaricus-gongylophorus-singer-m%C3%A3-ller
#20
Mariela Otoni do Nascimento, Renato de Almeida Sarmento, Gil Rodrigues Dos Santos, Cléia Almeida de Oliveira, Danival José de Souza
Filamentous fungi from the genus Trichoderma are commonly found in soil. They are considered facultative mycoparasites, and are antagonists of other fungi such as the cultivar of leaf-cutting ants (Leucoagaricus gongylophorus). The aim of the present study was to bioprospect Trichoderma spp. from different soils collected from Gurupi, Tocantins, Brazil, for antagonistic effects against the mutualistic fungus of leaf-cutting ants. To isolate filamentous fungi, samples were collected from six locations. Preliminarily, isolates were identified by morphological analysis as belonging to Trichoderma...
June 14, 2017: Journal of Basic Microbiology
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