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https://www.readbyqxmd.com/read/28805804/a-genetically-encoded-tool-for-manipulation-of-nadp-nadph-in-living-cells
#1
Valentin Cracan, Denis V Titov, Hongying Shen, Zenon Grabarek, Vamsi K Mootha
The redox coenzymes NADH and NADPH are broadly required for energy metabolism, biosynthesis and detoxification. Despite detailed knowledge of specific enzymes and pathways that utilize these coenzymes, a holistic understanding of the regulation and compartmentalization of NADH- and NADPH-dependent pathways is lacking, partly because of a lack of tools with which to investigate these processes in living cells. We have previously reported the use of the naturally occurring Lactobacillus brevis H2O-forming NADH oxidase (LbNOX) as a genetic tool for manipulation of the NAD(+)/NADH ratio in human cells...
August 7, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28805262/mesenchymal-stem-cells-attenuate-liver-fibrosis-by-suppressing-th17-cells
#2
Neda Milosavljevic, Marina Gazdic, Bojana Simovic Markovic, Aleksandar Arsenijevic, Jasmin Nurkovic, Zana Dolicanin, Nemanja Jovicic, Ilija Jeftic, Valentin Djonov, Nebojsa Arsenijevic, Miodrag L Lukic, Vladislav Volarevic
This study investigates molecular and cellular mechanisms involved in mesenchymal stem cell (MSCs)-mediated modulation of IL-17 signaling during liver fibrosis. Mice received CCl4 (1μL/g intraperitoneally) twice/week for 1 month. MSCs (1x10(6) ), or MSC-conditioned medium (MSC-CM) were intravenously injected 24h after CCl4 and on every 7(th) day. Liver fibrosis was determined by macroscopic examination, histological analysis, Sirius red staining and RT-PCR. Serum levels of cytokines, IDO and kynurenine were determined by ELISA...
August 14, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28804855/human-heart-failure-with-preserved-ejection-versus-feline-cardiomyopathy-what-can-we-learn-from-both-veterinary-and-human-medicine
#3
REVIEW
Valentine Prat, Bertrand Rozec, Chantal Gauthier, Benjamin Lauzier
Cardiovascular affections are a growing health burden in human populations. Recent advances in cardiology have improved treatments and outcomes for myocardial infarction and arrhythmias, but other conditions still remain poorly understood. To date, the classical approach to study cardiovascular diseases involves rodent models, despite their strong differences with human cardiac physiology. In this context, this review will focus on the common traits between human and feline cardiac diseases, namely heart failure with preserved ejection fraction and feline cardiomyopathies, respectively...
August 14, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28803684/role-of-two-dimensional-speckle-tracking-echocardiography-strain-in-the-assessment-of%C3%A2-right-ventricular-systolic-function-and-comparison-with-conventional-parameters
#4
REVIEW
Luca Longobardo, Valentin Suma, Renuka Jain, Scipione Carerj, Concetta Zito, Dianne L Zwicke, Bijoy K Khandheria
Despite the already well-known role the right side of the heart plays in many diseases, right ventricular (RV) function has only recently been carefully considered. Echocardiography is the first-line diagnostic technique for the assessment of the right ventricle and right atrium, whereas cardiac magnetic resonance is considered the gold standard but is limited by cost and availability. According to the current guidelines, systolic RV function should be assessed by several conventional measurements, but the efficacy of these parameters as diagnostic and prognostic tools has been questioned by many authors...
August 10, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28801114/effects-of-curcumin-on-short-term-spatial-and-recognition-memory-adult-neurogenesis-and-neuroinflammation-in-a-streptozotocin-induced-rat-model-of-dementia-of-alzheimer-s-type
#5
Taysa B Bassani, Joelle M Turnes, Eric L R Moura, Jéssica M Bonato, Valentín Cóppola-Segovia, Silvio M Zanata, Rúbia M M W Oliveira, Maria A B F Vital
Curcumin is a natural polyphenol with evidence of antioxidant, anti-inflammatory and neuroprotective properties. Recent evidence also suggests that curcumin increases cognitive performance in animal models of dementia, and this effect would be related to its capacity to enhance adult neurogenesis. The aim of this study was to test the hypothesis that curcumin treatment would be able to preserve cognition by increasing neurogenesis and decreasing neuroinflammation in the model of dementia of Alzheimer's type induced by an intracerebroventricular injection of streptozotocin (ICV-STZ) in Wistar rats...
August 8, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28801077/myocardial-amyloid-quantification-with-look-locker-magnetic-resonance-sequence-in-cardiac-amyloidosis-diagnostic-accuracy-in-clinical-practice-and-histological-validation
#6
Eduardo Pozo, Jose M Castellano, Anubhav Kanwar, Rajiv Deochand, Mireia Castillo-Martin, Pablo Pazos-López, Carlos González-Lengua, Keren Osman, Matthew Cham, Carlos Cordon-Cardo, Jagat Narula, Valentin Fuster, Javier Sanz
BACKGROUND: Cardiac magnetic resonance (CMR) has demonstrated its utility in the non-invasive diagnosis of cardiac amyloidosis (CA). Our aim was to evaluate the ability of standard Look-Locker sequences to quantify amyloid deposition in CA. METHODS AND RESULTS: Consecutive patients referred for CMR for possible CA were retrospectively evaluated. Positive cardiac biopsy and/or typical pattern of late gadolinium enhancement were required for the diagnosis of CA. Post-contrast T1 values were obtained from Look-Locker sequences, and correlated with markers of severity of disease and major events...
August 8, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28800990/thinking-outside-the-tube-expanding-the-armamentarium-of-the-thoracic-anesthesiologist
#7
EDITORIAL
Elizabeth A Valentine, E Andrew Ochroch
No abstract text is available yet for this article.
August 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28800498/erylosides-f8-v1-v3-and-w-w2-new-triterpene-oligoglycosides-from-the-carribean-sponge-erylus-goffrilleri
#8
Alexandr S Antonov, Anatoly I Kalinovsky, Shamil S Afiyatullov, Elena V Leshchenko, Pavel S Dmitrenok, Ekaterina A Yurchenko, Vladimir I Kalinin, Valentin A Stonik
Seven new triterpene glycosides, erylosides F8 (1), V1 (2), V2 (3), V3 (4), W (5), W1 (6) and W2 (7), were isolated from a Carribean sponge Erylus goffrilleri collected from the Carribean Sea near the Arrecife-Seco reef (Cuba). Structures of the glycosides were determined using (1)H and (13)C NMR spectroscopy, including 2D NMR procedures ((1)H-(1)H COSY, (1)H-(13)С HMBC, (1)H-(13)С HSQC and NOESY) and HR ESI mass spectrometry. Erylosides 1 and 4 have 14-carboxy-24,25-dimethyllanost-8(9)-en-3β,25-diol as aglycone whereas glycosides 2, 3, 5, 6 and 7 are 14-carboxy-24-acetoxy-24-methyllanost-8(9)-en-3β-ol glycoconjugates...
August 4, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28799477/partner-abuse-among-hiv-positive-sexual-minority-men-that-was-all-i-deserved
#9
David W Pantalone, Sarah E Valentine, Michelle A Jackson, Michele P Andrasik, Jane M Simoni
Living with HIV can be both a precipitant and a consequence of partner abuse (PA) across populations, including male-male partnerships. However, overlapping experiences of living with HIV and experiencing PA are not well characterized. We conducted 24 qualitative interviews with urban HIV-positive sexual minority men (SMM) recruited from a public hospital HIV clinic in Seattle, Washington, who reported lifetime PA histories, and analyzed them using content analysis. Participants reported psychological, physical, and sexual victimization from partners, varying in severity...
September 2017: Qualitative Health Research
https://www.readbyqxmd.com/read/28798777/mesenchymal-stem-cells-promote-metastasis-of-lung-cancer-cells-by-downregulating-systemic-antitumor-immune-response
#10
Marina Gazdic, Bojana Simovic Markovic, Nemanja Jovicic, Maja Misirkic-Marjanovic, Valentin Djonov, Vladimir Jakovljevic, Nebojsa Arsenijevic, Miodrag L Lukic, Vladislav Volarevic
Since majority of systemically administered mesenchymal stem cells (MSCs) become entrapped within the lungs, we used metastatic model of lung cancer, induced by intravenous injection of Lewis lung cancer 1 (LLC1) cells, to investigate the molecular mechanisms involved in MSC-mediated modulation of metastasis. MSCs significantly augmented lung cancer metastasis, attenuate concentrations of proinflammatory cytokines (TNF-α, IL-17), and increase levels of immunosuppressive IL-10, nitric oxide, and kynurenine in sera of LLC1-treated mice...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28798717/identifying-features-of-bodily-expression-as-indicators-of-emotional-experience-during-multimedia-learning
#11
Valentin Riemer, Julian Frommel, Georg Layher, Heiko Neumann, Claudia Schrader
The importance of emotions experienced by learners during their interaction with multimedia learning systems, such as serious games, underscores the need to identify sources of information that allow the recognition of learners' emotional experience without interrupting the learning process. Bodily expression is gaining in attention as one of these sources of information. However, to date, the question of how bodily expression can convey different emotions has largely been addressed in research relying on acted emotion displays...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28797763/the-safety-pharmacology-society-salary-survey
#12
Michael K Pugsley, Simon Authier, Tiffini Brabham, Maxim Soloviev, Carrie G Markgraf, Krystle Correll, Martin Traebert, Andrea Greiter-Wilke, Jean-Pierre Valentin, Hugo Vargas, Alfred Botchway, Derek J Leishman, Michael J Curtis
INTRODUCTION: Safety pharmacology is a growing discipline with scientists broadly distributed across international geographical regions. This electronic salary survey is the first to be distributed amongst the entire Safety Pharmacology Society (SPS) membership. An electronic survey was sent to all members of the Society. Categorical survey questions assessed membership employment types, annual incomes, and professional certifications, along with other associated career attributes. METHODS: This survey was distributed to the SPS membership that is comprised of safety pharmacologists, toxicologists and pharmacologists working globally in the pharmaceutical industry, at contract research organizations (CRO), regulatory agencies, and academia or within the technology provider industry...
August 7, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28796385/muscle-length-effect-on-corticospinal-excitability-during-maximal-concentric-isometric-and-eccentric-contractions-of-the-knee-extensors
#13
Valentin Doguet, Kazunori Nosaka, Arnaud Guével, Gary Thickbroom, Kazuhiro Ishimura, Marc Jubeau
Neural control of eccentric contractions differs from that of concentric and isometric contractions, but no previous study has compared responses to motor cortex stimulations at long muscle lengths during such contraction types. This study compared the effect of muscle length on corticospinal excitability between maximal concentric, isometric and eccentric contractions of the knee extensors. Twelve males performed 12 maximal concentric, isometric and eccentric voluntary contractions (36 contractions in total), separated by a 5-min rest between contraction types...
August 10, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28796209/blockchains-crypto-control-your-own-energy-supply
#14
Merlinda Andoni, Valentin Robu, David Flynn
No abstract text is available yet for this article.
August 9, 2017: Nature
https://www.readbyqxmd.com/read/28795791/water-at-the-interface-between-defective-graphene-and-cu-or-pt-111-surfaces
#15
Lara Ferrighi, Daniele Perilli, Daniele Selli, Cristiana Di Valentin
The presence of defects in the graphenic layers deposited on metal surfaces modifies the nature of the interaction. Unsaturated carbon atoms, due to vacancies in the lattice, form strong organometallic bonds with surface metal atoms that highly enhance the binding energy between the two materials. We investigate, by means of a wide set of dispersion-corrected density functional theory calculations, how such strong chemical bonds affect both the electronic properties of these hybrid interfaces and the chemical reactivity with water, which is commonly present in the working conditions...
August 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28793044/reproducibility-and-reliability-of-qtc-and-qtcd-measurements-and-their-relationships-with-left-ventricular-hypertrophy-in-hemodialysis-patients
#16
Maria Angélica Gonçalves Alonso, Valentine de Almeida Costa de Castro Lima, Maria Angela Magalhães de Queiroz Carreira, Jocemir Ronaldo Lugon
Background: Left ventricular hypertrophy (LVH) is very common in hemodialysis patients and an independent risk factor for mortality in this population. The myocardial remodeling underlying the LVH can affect ventricular repolarization causing abnormalities in QT interval. Objective: to evaluate the reproducibility and reliability of measurements of corrected QT interval (QTc) and its dispersion (QTcd) and correlate these parameters with LVH in hemodialysis patients...
August 7, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28792079/mentoring-relationship-quality-and-maltreated-children-s-coping
#17
Ashley A Chesmore, Lindsey M Weiler, Heather N Taussig
Coping strategies are believed to protect against the harmful effects of maltreatment on children's psychosocial outcomes. Caregivers are thought to be critical in helping children develop adaptive coping strategies, yet many maltreated children have poor and/or insecure relationships with their parents. A quality relationship with a caring, non-parental adult (e.g., a mentor), however, may be one strategy to promote healthy coping among maltreated children. Children (N = 154) in this study participated in a mentoring and skill-based program for maltreated preadolescents placed in foster care...
August 9, 2017: American Journal of Community Psychology
https://www.readbyqxmd.com/read/28790428/an-unusual-role-for-the-phytyl-chains-in-the-photoprotection-of-the-chlorophylls-bound-to-water-soluble-chlorophyll-binding-proteins
#18
Alessandro Agostini, Daniel M Palm, Franz-Josef Schmitt, Marco Albertini, Marilena Di Valentin, Harald Paulsen, Donatella Carbonera
Water-Soluble Chlorophyll Proteins (WSCPs) from Brassicaceae are non-photosynthetic proteins which tetramerize upon binding four chlorophyll (Chl) molecules. The bound Chls are highly photostable, despite the lack of bound carotenoids known, in Chl-containing photosynthetic proteins, to act as singlet oxygen and Chl triplet ((3)Chl) quenchers. Although the physiological function of WSCPs is still unclear, it is likely to be related to their biochemical stability and their resistance to photodegradation. To get insight into the origin of this photostability, the properties of the (3)Chl generated in WSCPs upon illumination were investigated...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28783876/alkynylation-of-bio-based-hmf-to-connect-biomass-processing-with-conjugated-polymers-and-furanic-pharmaceuticals
#19
Leonid Romashov, Valentine P Ananikov
Acetylene-functionalized platform chemicals were synthesized for the first time based on biomass-derived 5-hydrohymethylfurfural (HMF). Demanded mono- and bis-ethynylfurans were obtained in high yields (89-99%). Plausible application of these products in the synthesis of smart organic conjugated materials and pharmaceuticals was addressed in a series of transformations. Conjugated polyacetylenic polymers with morphology control have been prepared with the incorporation of the HMF core.
August 7, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28783418/diagnosis-and-management-of-panton-valentine-leukocidin-toxin-associated-staphylococcus-aureus-infection-an-update
#20
Yamuna Devi Bakthavatchalam, Laura E B Nabarro, Ravikar Ralph, Balaji Veeraraghavan
The incidence of invasive Staphylococcus aureus (SA) infection has increased in the past decade and is associated with poor outcomes and high mortality rates. Of all the virulence factors, Panton-Valentine Leukocidin (PVL) has received the greatest attention. PVL producing SA strains are more likely to produce severe skin and soft tissue infections (SSTIs) and necrotizing pneumonia. This review focuses on the current evidence on PVL-SA virulence, epidemiology, clinical disease and treatment with relevance to healthcare in India...
August 7, 2017: Virulence
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