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https://www.readbyqxmd.com/read/28108670/retinal-temporal-resolution-and-contrast-sensitivity-in-the-parasitic-lamprey-mordacia-mordax-and-its-non-parasitic-derivative-m-praecox
#1
Rachael E Warrington, Nathan S Hart, Ian C Potter, Shaun P Collin, Jan M Hemmi
Lampreys and hagfishes are the sole extant representatives of the early agnathan (jawless) vertebrates. We compared retinal function of fully-metamorphosed, immature Mordacia mordax (which are about to commence parasitic feeding) with those of sexually-mature individuals of its non-parasitic derivative M praecox We focused on elucidating the retinal adaptations to dim-light environments in these nocturnally-active lampreys, using electroretinography to determine the temporal resolution (flicker fusion frequency, FFF) and temporal contrast sensitivity (CS) of enucleated eyecups at different temperatures and light intensities...
January 20, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28105813/generation-and-trapping-of-nitrosocarbonyl-intermediates
#2
Misal Giuseppe Memeo, Paolo Quadrelli
The nitrosocarbonyls (R-CONO) are highly reactive species and remarkable intermediates toward different synthetic targets. This review will cover a research area whose impact in current organic synthesis is constantly increasing in the chemical community. This review represents the first and comprehensive picture on the generation and trapping of nitrosocarbonyls and is solidly built on more than 380 papers. Six different classes of key starting materials such as hydroxamic acids, N-hydroxy carbamates, N-hydroxyureas, nitrile oxides, and 1,2,4-oxadiazole-4-oxides were highlighted...
January 20, 2017: Chemical Reviews
https://www.readbyqxmd.com/read/28103628/treatment-of-a-vulvar-paget-s-disease-by-photodynamic-therapy-with-a-new-light-emitting-fabric-based-device
#3
Claire Vicentini, Olivier Carpentier, Fabienne Lecomte, Elise Thecua, Laurent Mortier, Serge R Mordon
INTRODUCTION: The non-invasive vulvar Paget's disease is an intra-epidermal carcinoma with glandular characteristics. It appears like an erythematous plaque. The main symptoms are pruritus and pain. The standard treatment is surgical excision in depth. This treatment is complicated with a severe morbidity and photodynamic therapy can be an alternative choice. However, the pain experienced during the photodynamic treatment of vulvar lesion is intense and leads to a premature interruption of the treatment...
January 19, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28101328/perceived-health-status-in-a-comparative-perspective-methodological-limitations-and-policy-implications-for-israel
#4
Baruch Levi
BACKGROUND: The perceived health status indicator included in the OECD Health Statistics suffers from severe methodological limitations related to data collection. Furthermore, this indicator is also included in the OECD's Better Life Index, thus distorting the total health score of some OECD countries, among them Israel. The purpose of this paper is to explore the erroneous use of OECD health data in Israel and to warn of its implications. METHODS: Analysis of data from the OECD Health Database, Better Life Index and the Israeli Central Bureau of Statistics, review of media reports and governmental documents concerning health measures, conversations and correspondence held with officials in the relevant organizations...
2017: Israel Journal of Health Policy Research
https://www.readbyqxmd.com/read/28099496/plasticity-of-daily-behavioral-rhythms-in-foragers-and-nurses-of-the-ant-camponotus-rufipes-influence-of-social-context-and-feeding-times
#5
Stephanie Mildner, Flavio Roces
Daily activities within an ant colony need precise temporal organization, and an endogenous clock appears to be essential for such timing processes. A clock drives locomotor rhythms in isolated workers in a number of ant species, but its involvement in activities displayed in the social context is unknown. We compared locomotor rhythms in isolated individuals and behavioral rhythms in the social context of workers of the ant Camponotus rufipes. Both forager and nurse workers exhibited circadian rhythms in locomotor activity under constant conditions, indicating the involvement of an endogenous clock...
2017: PloS One
https://www.readbyqxmd.com/read/28099477/chronic-maternal-low-protein-diet-in-mice-affects-anxiety-night-time-energy-expenditure-and-sleep-patterns-but-not-circadian-rhythm-in-male-offspring
#6
Randy F Crossland, Alfred Balasa, Rajesh Ramakrishnan, Sangeetha K Mahadevan, Marta L Fiorotto, Ignatia B Van den Veyver
Offspring of murine dams chronically fed a protein-restricted diet have an increased risk for metabolic and neurobehavioral disorders. Previously we showed that adult offspring, developmentally exposed to a chronic maternal low-protein (MLP) diet, had lower body and hind-leg muscle weights and decreased liver enzyme serum levels. We conducted energy expenditure, neurobehavioral and circadian rhythm assays in male offspring to examine mechanisms for the body-weight phenotype and assess neurodevelopmental implications of MLP exposure...
2017: PloS One
https://www.readbyqxmd.com/read/28098980/ruthenium-ii-complex-based-luminescent-bifunctional-probe-for-ag-and-phosphate-ions-ag-assisted-detection-and-imaging-of-rrna
#7
Sanjoy Kumar Sheet, Bhaskar Sen, Romita Thounaojam, Kripamoy Aguan, Snehadrinarayan Khatua
A new bis-heteroleptic Ru(II) complex (1) of benzimidazole-substituted 1,2,3-triazole pyridine ligand has been designed and constructed for the photoluminescent detection of cationic and anionic analytes, Ag(+) and phosphate ions. Compound, 1[PF6]2 was fully characterized by various spectroscopic techniques and the solid-state structure was determined via single-crystal X-ray diffraction. The cation and anion sensing properties in 50% aqueous buffer (pH 9.2) and pure acetonitrile were carefully examined in photoluminescence (PL) spectroscopy...
January 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28098969/exciplex-forming-co-host-based-red-phosphorescent-organic-light-emitting-diodes-with-long-operational-stability-and-high-efficiency
#8
Jeong-Hwan Lee, Hyun Shin, Jae-Min Kim, Kwon-Hyeon Kim, Jang-Joo Kim
The use of exciplex forming cohosts and phosphors incredibly boosts the efficiency of organic light-emitting diodes (OLEDs) by providing a barrier-free charge injection into an emitting layer and a broad recombination zone. However, most of the efficient OLEDs based on the exciplex forming cohosts has suffered from the short operational lifetime. Here, we demonstrated phosphorescent OLEDs (PhOLEDs) having both high efficiency and long lifetime by using a new exciplex forming cohost composed of N,N'-diphenyl-N,N'-bis(1,1'-biphenyl)-4,4'-diamine (NPB) and (1,3,5-triazine-2,4,6-triyl)tris(benzene-3,1-diyl))tris(diphenylphosphine oxide) (PO-T2T)...
January 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28098557/length-dependent-flagellar-growth-of-vibrio-alginolyticus-revealed-by-real-time-fluorescent-imaging
#9
Meiting Chen, Ziyi Zhao, Jin Yang, Kai Peng, Matthew A B Baker, Fan Bai, Chien-Jung Lo
Bacterial flagella are extracellular filaments that drive swimming in bacteria. During its assembly, flagellins are transported unfolded through the central channel in the flagellum to the growing tip. Here we applied in vivo fluorescent imaging to monitor in real time the Vibrio alginolyticus polar flagella growth. The flagellar growth rate is found to be highly length-dependent. Initially, the flagellum grows at a constant rate (50nm/min) when shorter than 1500nm. The growth rate decays sharply when the flagellum grows longer...
January 18, 2017: ELife
https://www.readbyqxmd.com/read/28098350/endogenous-circadian-rhythms-in-pigment-composition-induce-changes-in-photochemical-efficiency-in-plant-canopies
#10
José Ignacio García-Plazaola, Beatriz Fernández-Marín, Juan Pedro Ferrio, Josu G Alday, Günter Hoch, Damien Landais, Alexandru Milcu, David T Tissue, Jordi Voltas, Arthur Gessler, Jacques Roy, Víctor Resco de Dios
There is increasing evidence that the circadian clock is a significant driver of photosynthesis that becomes apparent when environmental cues are experimentally held constant. We studied whether the composition of photosynthetic pigments is under circadian regulation, and whether pigment oscillations lead to rhythmic changes in photochemical efficiency. To address these questions, canopies of bean and cotton were maintained, after an entrainment phase, under constant (light or darkness) conditions for 30-48 h...
January 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28098339/the-effect-of-blue-light-on-stomatal-oscillations-and-leaf-turgor-pressure-in-banana-leaves
#11
Yotam Zait, Or Shapira, Amnon Schwartz
Stomatal oscillations are cyclic opening and closing of stomata, presumed to initiate from hydraulic mismatch between leaf water supply and transpiration rate. To test this assumption, mismatches between water supply and transpiration were induced using manipulations of VPD (vapor pressure deficit) and light spectrum in banana (Musa acuminata). Simultaneous measurements of gas exchange with changes in leaf turgor pressure were used to describe the hydraulic mismatches. An increase of VPD above a certain threshold, caused stomatal oscillations with variable amplitudes...
January 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28098309/multi-shelled-ceria-hollow-spheres-with-a-tunable-shell-number-and-thickness-and-their-superior-catalytic-activity
#12
Yuanyuan Liao, Yuan Li, Lei Wang, Yongxia Zhao, Danyang Ma, Biqing Wang, Yongxia Wan, Shengliang Zhong
In this work, ceria multi-shelled nanospheres with a tunable shell number and thickness were prepared by a facile coordination polymer (CP) precursor method without the use of any template and surfactant. Interestingly, the number, thickness and structure of the shell can be tuned by varying the reaction time, reaction temperature, ratio of reagent and calcination temperature. The formation process of the multi-shelled hollow spheres was also investigated, which experienced a core contraction and shell separation process...
January 18, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28098239/immunoglobulin-light-chain-igl-genes-in-torafugu-genomic-organization-and-identification-of-a-third-teleost-igl-isotype
#13
Xi Fu, Fengjun Zhang, Shugo Watabe, Shuichi Asakawa
Here, we report a genome-wide survey of immunoglobulin light chain (IGL) genes of torafugu (Takifugu rubripes) revealing multi-clusters spanning three separate chromosomes (v5 assembly) and 45 scaffolds (v4 assembly). Conventional sequence similarity searches and motif scanning approaches based on recombination signal sequence (RSS) motifs were used. We found that three IGL isotypes (L1, L2, and L3) exist in torafugu and that several loci for each isotype are present. The transcriptional orientations of the variable IGL (VL) segments were found to be either the same (in the L2 isotype) or opposite (in the L1 and L3 isotypes) to the IGL joining (JL) and constant (CL) segments, suggesting they can undergo rearrangement by deletion or inversion when expressed...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28096392/continual-renewal-and-replication-of-persistent-leishmania-major-parasites-in-concomitantly-immune-hosts
#14
Michael A Mandell, Stephen M Beverley
In most natural infections or after recovery, small numbers of Leishmania parasites remain indefinitely in the host. Persistent parasites play a vital role in protective immunity against disease pathology upon reinfection through the process of concomitant immunity, as well as in transmission and reactivation, yet are poorly understood. A key question is whether persistent parasites undergo replication, and we devised several approaches to probe the small numbers in persistent infections. We find two populations of persistent Leishmania major: one rapidly replicating, similar to parasites in acute infections, and another showing little evidence of replication...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096233/role-of-the-constant-region-domain-in-the-structural-diversity-of-human-antibody-light-chains
#15
Emi Hifumi, Hiroaki Taguchi, Ryuichi Kato, Taizo Uda
Issues regarding the structural diversity (heterogeneity) of an antibody molecule have been the subject of discussion along with the development of antibody drugs. Research on heterogeneity has been extensive in recent years, but no clear solution has been reached. Heterogeneity is also observed in catalytic antibody κ light chains (CLs). In this study, we investigated how the constant region domain of CLs concerns structural diversity because it is a simple and good example for elucidating heterogeneity. By means of cation-exchange chromatography, SDS-PAGE, and 2-dimensional electrophoresis for the CL, multimolecular forms consisting of different electrical charges and molecular sizes coexisted in the solution, resulting in the similar heterogeneity of the full length of CLs...
January 17, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28095757/ethical-leadership-outcomes-in-nursing
#16
Maasoumeh Barkhordari-Sharifabad, Tahereh Ashktorab, Foroozan Atashzadeh-Shoorideh
BACKGROUND: Leadership style adopted by nursing managers is a key element in progress and development of nursing and quality of healthcare services received by the patients. In this regard, the role of ethical leadership is of utmost importance. OBJECTIVES: The objective of the study was to elaborate on the ethical leadership and its role in professional progress and growth of nurses in the light of work condition in health providing institutes. METHODS: The study was carried out as a qualitative study following conventional content analysis method...
January 1, 2017: Nursing Ethics
https://www.readbyqxmd.com/read/28095551/acne-treatment-with-3-step-broadband-light-protocol
#17
Patrick Bitter
BACKGROUND AND OBJECTIVE: A new 3-step protocol using broadband light allows patients with moderate to severe in ammatory acne to avoid potential side effects of systemic acne treatments and the risks and uncertainties associated with laser and light treatments to date. The protocol also addresses acne scarring and, with appropriate modi cations, all skin types. METHODS: The protocol consists of 6 to 8 treatments performed with a single device that allows the user to select wavelength, spot size, uence, and pulse duration...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28094045/quantification-of-user-and-manufacturer-variabilities-in-urinary-catheter-anchoring-balloon-inflation-and-mitigation-of-variability-by-flow-resistance
#18
Niall F Davis, Eoghan M Cunnane, Rory C Mooney, Rustom P Manecksha, John A Thornhill, Michael T Walsh
OBJECTIVE: To quantify user variability and manufacturer variability in urinary catheter anchoring balloon inflation pressure and to mitigate any significant variance by incorporating flow resistance into the anchoring balloon inflation process. METHODS: Inflation of a urinary catheter anchoring balloon was performed at atmospheric pressure by different users (n = 8) to investigate user variability. A calibrated pressure transducer measured inflation pressures, and a video extensometer measured balloon inflation profiles...
January 13, 2017: Urology
https://www.readbyqxmd.com/read/28089124/local-scale-spatio-temporal-distribution-of-questing-ixodes-ricinus-l-acari-ixodidae-a-case-study-from-a-riparian-urban-forest-in-wroc%C3%A5-aw-sw-poland
#19
Dorota Kiewra, Ewa Stefańska-Krzaczek, Mariusz Szymanowski, Anna Szczepańska
This paper presents the distribution of questing Ixodes ricinus ticks in suburban forest intensively visited by people. The local-scale observations conducted during a 4-year study at 99 plots (of 100m(2) each) located throughout the entire area of a riparian urban forest, showed a high variation in the density of ticks from year to year. Although I. ricinus is generally permanent in the study area, spatial distribution of sample plots harbouring I. ricinus is variable, i.e. mainly random for adults and larvae, and random or clustered for nymphs...
December 23, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28088847/vapor-and-gas-bubble-growth-dynamics-around-laser-irradiated-water-immersed-plasmonic-nanoparticles
#20
Yuliang Wang, Mikhail E Zaytsev, Hai Le The, Jan C T Eijkel, Harold J W Zandvliet, Xuehua Zhang, Detlef Lohse
Microbubbles produced by exposing water-immersed metallic nanoparticles to resonant light play an important role in emerging and efficient plasmonic-enhanced processes for catalytic conversion, solar energy harvesting, biomedical imaging, and cancer therapy. How do these bubbles form, and what is their gas composition? In this paper, the growth dynamics of nucleating bubbles around laser-irradiated, water-immersed Au plasmonic nanoparticles are studied to determine the exact origin of the occurrence and growth of these bubbles...
January 20, 2017: ACS Nano
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