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https://www.readbyqxmd.com/read/27906492/taming-metal-fluorine-carbenoids
#1
Sebastian Molitor, Kai-Stephan Feichtner, Viktoria H Gessner
While Li/Cl carbenoids are versatile reagents in organic synthesis, the controlled handling of the extremely reactive and labile M/F carbenoids remains a challenge. We now show that even these compounds can be stabilized and isolated in solid state as well as in solution. Particularly the sodium and potassium com¬pounds exhibit a remarkable stability, thus allowing the first isolation of a room temperature stable fluorine carbenoid. Spectro¬scopic as well as DFT studies confirm the pronounced carbenoid character, showing M-F-C interactions with elongated C-F bonds...
December 1, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27905598/dehydro-oxazole-thiazole-and-imidazole-radicals-insights-into-the-electronic-structure-stability-and-reactivity-aspects
#2
Anamika Mukhopadhyay, Lilit Jacob, Sugumar Venkataramani
DFT (U)B3LYP/cc-pVTZ and (U)M06-2X/cc-pVTZ and multireference CASSCF/cc-pVTZ level of theories have been used to investigate the electronic structure of isomeric dehydrooxazole (1b-d, 3 isomers), dehydrothiazole (2b-d, 3 isomers) and dehydroimidazole (3a-d, 4 isomers) radicals. The ground state electronic structure of each radical isomer has been confirmed by predicting their doublet excited state structure and calculating the adiabatic energy difference. The stability order of the individual isomeric radicals has been estimated through the comparison of absolute energies...
December 1, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27903680/herpes-simplex-virus-specific-t-cell-response-in-a-cohort-with-primary-genital-infection-correlates-inversely-with-frequency-of-subsequent-recurrences
#3
Elisabeth Franzen-Röhl, Danika Schepis, Fredrik Atterfelt, Kristina Franck, Arne Wikström, Jan-Åke Liljeqvist, Tomas Bergström, Elisabeth Aurelius, Klas Kärre, Louise Berg, Hans Gaines
OBJECTIVES: During the last decades, a changing epidemiological pattern of genital herpes simplex virus (HSV) infection has emerged. Primary infection is now caused as often by HSV-1 as by HSV-2. Once established, HSV can be reactivated leading to recurrent mucocutaneous lesions as well as meningitis. Why some otherwise immune-competent individuals experience severe and frequent recurrences is not known, and the immunological mechanism underlying recurrent symptomatic HSV infection is not fully understood...
November 30, 2016: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/27898678/leukocyte-telomere-length-in-relation-to-17-biomarkers-of-cardiovascular-disease-risk-a-cross-sectional-study-of-us-adults
#4
David H Rehkopf, Belinda L Needham, Jue Lin, Elizabeth H Blackburn, Ami R Zota, Janet M Wojcicki, Elissa S Epel
BACKGROUND: Leukocyte telomere length (LTL) is a putative biological marker of immune system age, and there are demonstrated associations between LTL and cardiovascular disease. This may be due in part to the relationship of LTL with other biomarkers associated with cardiovascular disease risk. However, the strength of associations between LTL and adiposity, metabolic, proinflammatory, and cardiovascular biomarkers has not been systematically evaluated in a United States nationally representative population...
November 2016: PLoS Medicine
https://www.readbyqxmd.com/read/27893563/resistance-training-improves-muscle-function-and-cardiometabolic-risks-but-not-quality-of-life-in-older-people-with-type-2-diabetes-mellitus-a-randomized-controlled-trial
#5
Ping-Lun Hsieh, Chin-Hsiao Tseng, Yufeng Jane Tseng, Wei-Shiung Yang
BACKGROUND AND PURPOSE: In older people with type 2 diabetes mellitus (T2DM), the effects of aging and T2DM may compromise the function of skeletal muscle, deteriorate metabolic status, and jeopardize physical performance, aerobic capacity, and quality of life (QoL). The purpose of this study was to investigate the effects of 12 weeks of resistance training (RT) on muscle function, physical performance, cardiometabolic risks, and QoL in older people with T2DM. METHODS: This study was a randomized controlled trial that employed block randomization, assessor blinding, and the intention-to-treat principle...
November 23, 2016: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/27893474/hypertrophy-and-explosive-reactive-functioning-in-sedentary-men-following-10-weeks-of-whole-body-vibration
#6
Jens Ebing, Ulf Gast, Christoph Hauptmann, Dieter Felsenberg, Daniel L Belavý
The objective of this study was to determine the impact of vertical (Power-plate; POW) and side-alternating (Galileo; GAL) whole-body vibration exercise on muscle mass and lower-limb neuromuscular function. Forty-three sedentary male subjects (18-30yr) randomized into three groups underwent two upper-body exercise sessions per week for 10 weeks. Two groups of subjects underwent additional squat exercises on the GAL (N=15) or POW (N=14) devices. The third group was control. On magnetic resonance imaging, volume of the thigh muscles was measured...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27889490/inhibition-of-cathepsin-x-reduces-the-strength-of-microglial-mediated-neuroinflammation
#7
Anja Pišlar, Biljana Božić, Nace Zidar, Janko Kos
Inflammation plays a central role in the processes associated with neurodegeneration. The inflammatory response is mediated by activated microglia that release inflammatory mediators to the neuronal environment. Microglia-derived lysosomal cathepsins, including cathepsin X, are increasingly recognized as important mediators of the inflammation involved in lipopolysaccharide (LPS)-induced neuroinflammation. The current study was undertaken to investigate the role of cathepsin X and its molecular target, γ-enolase, in neuroinflammation and to elucidate the underlying mechanism...
November 23, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27885059/association-of-grip-strength-with-cardiovascular-risk-markers
#8
Cédric Gubelmann, Peter Vollenweider, Pedro Marques-Vidal
BACKGROUND: Mechanisms underlying the association between grip strength and cardiovascular mortality are poorly understood. We aimed to assess the association of grip strength with a panel of cardiovascular risk markers. DESIGN: The study was based on a cross-sectional analysis of 3468 adults aged 50-75 years (1891 women) from a population-based sample in Lausanne, Switzerland. METHODS: Grip strength was measured using a hydraulic hand dynamometer...
November 24, 2016: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/27882600/muscular-fitness-and-metabolic-and-inflammatory-biomarkers-in-adolescents-results-from-labmed-physical-activity-study
#9
C A Agostinis-Sobrinho, C Moreira, S Abreu, L Lopes, L B Sardinha, J Oliveira-Santos, A Oliveira, J Mota, R Santos
This study aimed to evaluate the associations between muscular fitness and inflammatory biomarkers and to investigate the relationship between muscular fitness and selected clustered inflammatory biomarkers in adolescents. This is a cross-sectional analysis with 529 adolescents (267 girls) aged 12-18 years. Handgrip strength and standing long jump tests assessed MF. Continuous scores of clustered inflammatory biomarkers (sum of Z-scores of C-reactive protein [CRP], C3, C4, fibrinogen, and leptin); metabolic risk factor (MRF) score (sum of Z-scores of SBP, triglycerides, ratio total cholesterol [TC]/HDL, HOMA-IR, and waist circumference [WC]) were computed...
November 23, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27866344/development-of-a-fast-curing-tissue-adhesive-for-meniscus-tear-repair
#10
Agnieszka Izabela Bochyńska, Gerjon Hannink, Dennis Janssen, Pieter Buma, Dirk W Grijpma
Isocyanate-terminated adhesive amphiphilic block copolymers are attractive materials to treat meniscus tears due to their tuneable mechanical properties and good adhesive characteristics. However, a drawback of this class of materials is their relatively long curing time. In this study, we evaluate the use of an amine cross-linker and addition of catalysts as two strategies to accelerate the curing rates of a recently developed biodegradable reactive isocyanate-terminated hyper-branched adhesive block copolymer prepared from polyethylene glycol (PEG), trimethylene carbonate, citric acid and hexamethylene diisocyanate...
January 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/27863333/serum-biomarkers-of-inflammation-and-muscle-strength-among-women-with-systemic-lupus-erythematosus
#11
James S Andrews, Laura Trupin, Catherine L Hough, David I Daikh, Edward H Yelin, Patricia P Katz
OBJECTIVES: Muscle strength is an important determinant of physical function in women with systemic lupus erythematosus (SLE). Serum biomarkers of inflammation, including interleukin-6 (IL-6) and C-Reactive Protein (CRP), are associated with differences in muscle strength among individuals without rheumatologic disease. We examined whether serum levels of IL-6 and CRP are associated with upper and lower extremity muscle strength among adult women with SLE. METHODS: One hundred thirty-six women with SLE participated in this cross-sectional study...
November 15, 2016: Cytokine
https://www.readbyqxmd.com/read/27856216/modelling-cross-reactivity-and-memory-in-the-cellular-adaptive-immune-response-to-influenza-infection-in-the-host
#12
Ada W C Yan, Pengxing Cao, Jane M Heffernan, Jodie McVernon, Kylie M Quinn, Nicole L La Gruta, Karen L Laurie, James M McCaw
The cellular adaptive immune response plays a key role in resolving influenza infection. Experiments where individuals are successively infected with different strains within a short timeframe provide insight into the underlying viral dynamics and the role of a cross-reactive immune response in resolving an acute infection. We construct a mathematical model of within-host influenza viral dynamics including three possible factors which determine the strength of the cross-reactive cellular adaptive immune response: the initial naive T cell number, the avidity of the interaction between T cells and the epitopes presented by infected cells, and the epitope abundance per infected cell...
November 15, 2016: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/27847482/the-effect-of-aging-on-the-dynamics-of-reactive-and-proactive-cognitive-control-of-response-interference
#13
Ling Xiang, Baoqiang Zhang, Baoxi Wang, Jun Jiang, Fenghua Zhang, Zhujing Hu
A prime-target interference task was used to investigate the effects of cognitive aging on reactive and proactive control after eliminating frequency confounds and feature repetitions from the cognitive control measures. We used distributional analyses to explore the dynamics of the two control functions by distinguishing the strength of incorrect response capture and the efficiency of suppression control. For reactive control, within-trial conflict control and between-trial conflict adaption were analyzed...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27835625/use-of-treponemal-screening-assay-strength-of-signal-to-avoid-unnecessary-confirmatory-testing
#14
Gregory J Berry, Michael J Loeffelholz
BACKGROUND: Our reverse syphilis testing algorithm consists of a treponemal IgG multiplex flow immunoassay (MFI) followed by both rapid plasma reagin titer and the Treponema pallidum particle agglutination (TPPA) test on specimens with a reactive MFI result. We report here the impact of a modified reverse algorithm, in which the strength of signal of the MFI is used to avoid unnecessary TPPA testing. METHODS: The Bioplex syphilis IgG MFI was used as the syphilis screening assay, and specimens with equivocal (antibody index 0...
December 2016: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/27832604/intra-and-inter-regional-cortical-interactions-related-to-sharp-wave-ripples-and-dentate-spikes
#15
Drew B Headley, Vasiliki Kanta, Denis Pare
The hippocampus generates population events termed sharp-wave ripples (SWRs) and dentate spikes (DSs). While little is known about DSs, SWR-related hippocampal discharges during sleep are thought to replay prior waking activity, reactivating the cortical networks that encoded the initial experience. During slow-wave sleep, such reactivations likely occur during up-states, when most cortical neurons are depolarized. However, most studies have examined the relationship between SWRs and up-states measured in single neocortical regions...
November 9, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27830359/high-density-natural-luffa-sponge-as-anaerobic-microorganisms-carrier-for%C3%A2-degrading-1-1-1-tca-in-groundwater
#16
Wenbing Wang, Yanqing Wu, Chi Zhang
Anaerobic microorganisms were applied to degrade organic contaminants in groundwater with permeable reactive barriers (PRBs). However, anaerobic microorganisms need to select optimal immobilizing material as carrier. The potential of high-density natural luffa sponge (HDLS) (a new variety of luffa) for the immobilization and protection of anaerobic microorganisms was investigated. The HDLS has a dense structure composed of a complicated interwoven fibrous network. Therefore, the abrasion rate of HDLS (0.0068 g s(-1)) was the smallest among the four carriers [HDLS, ordinary natural luffa sponge (OLS), polyurethane sponge (PS), and gel carrier AQUAPOROUSGEL (APG)]...
November 9, 2016: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/27829634/estimation-of-the-compatibility-of-blend-composites-of-resins-by-measuring-the-fluorescent-spectra
#17
Hideki Hayashi, Masanobu Maeda, Junpei Kuno, Taiki Naruo, Hiroki Hirota, Masaki Harada, Kouji Iida, Yukio Onouchi, Koji Hirano
The effects of adding desipramine-containing fluorescence polymer (poly(10,11-dihydro-5-[3-(N-methylamino)propyl]dibenz[b,f]azepine-2,8-diyl-alt-9,9-didodecylfluorene-2,7-diyl, PAzep-Fl) to resins were investigated. When composites were prepared by a reactive blend of poly(lactic acid) (PLA), PAzep-Fl, and diisocyanate, the molecular weight of the obtained composite was larger than that of the composite, which was blended without PAzep-Fl; this suggested that chemical bonding occured between PLA and PAzep-Fl via diisocyanate...
2016: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/27826398/four-weeks-of-supplementation-with-isolated-soy-protein-attenuates-exercise-induced-muscle-damage-and-enhances-muscle-recovery-in-well-trained-athletes-a-randomized-trial
#18
Shweta Shenoy, Mrinal Dhawan, Jaspal Singh Sandhu
BACKGROUND: The effects of consumption of isolated soy protein (ISP) for a chronic period (4 weeks) on exercise induced muscle damage (EIMD) in athletic population have never been explored. OBJECTIVES: To examine the effects of ISP on muscle damage indices elicited via a bout of damaging exercise. PATIENTS AND METHODS: Forty males (20 boxers, 20 cyclists) aged 18 - 28 years were randomly assigned to two groups (ISP and Placebo) (n = 20). All participants who engaged themselves in specific, regular training of 30 hours a week during the competitive season were included in the study...
September 2016: Asian Journal of Sports Medicine
https://www.readbyqxmd.com/read/27821577/hippocampal-mismatch-signals-are-modulated-by-the-strength-of-neural-predictions-and-their-simi-larity-to-outcomes
#19
Nicole M Long, Hongmi Lee, Brice A Kuhl
: The hippocampus is thought to compare predicted events with current perceptual input, generating a mismatch signal when predictions are violated. However, most prior studies have only inferred when predictions occur without directly measuring them. Moreover, an important but unresolved question is whether hippocampal mismatch signals are modulated by the degree to which predictions differ from outcomes. Here we conducted a human fMRI study in which subjects repeatedly studied various word-picture pairs, learning to predict particular pictures (outcomes) from the words (cues)...
November 7, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27815213/different-dimensions-of-the-prediction-error-as-a-decisive-factor-for-the-triggering-of-the-reconsolidation-process
#20
M Agustina López, M Jimena Santos, Santiago Cortasa, Rodrigo S Fernández, Martin Carbó Tano, María E Pedreira
The reconsolidation process is the mechanism by which strength and/or content of consolidated memories are updated. Prediction error (PE) is the difference between the prediction made and current events. It is proposed as a necessary condition to trigger the reconsolidation process. Here we analyzed deeply the role of the PE in the associative memory reconsolidation in the crab Neohelice granulata. An incongruence between the learned temporal relationship between conditioned and unconditioned stimuli (CS-US) was enough to trigger the reconsolidation process...
December 2016: Neurobiology of Learning and Memory
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