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https://www.readbyqxmd.com/read/28544949/the-influence-of-shoe-aging-on-children-running-biomechanics
#1
Alexis Herbaut, Pascale Chavet, Maxime Roux, Nils Guéguen, Franck Barbier, Emilie Simoneau-Buessinger
Athletic children are prone to overuse injuries, especially at the heel and knee. Since footwear is an extrinsic factor of lower limb injury risk, the aim of this study was to assess the influence of shoe aging on children running biomechanics. Fourteen children active in sports participated in a laboratory biomechanical evaluation. A new pair of shoes was provided to each participant at an inclusion visit. Four months later, the participants performed a running task and their kinematics and kinetics were assessed both with their used shoes and with a new pair of shoes identical to the first...
May 17, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28544881/mammalian-systems-biotechnology-reveals-global-cellular-adaptations-in-a-recombinant-cho-cell-line
#2
Faraaz Noor Khan Yusufi, Meiyappan Lakshmanan, Ying Swan Ho, Bernard Liat Wen Loo, Pramila Ariyaratne, Yuansheng Yang, Say Kong Ng, Tessa Rui Min Tan, Hock Chuan Yeo, Hsueh Lee Lim, Sze Wai Ng, Ai Ping Hiu, Chung Ping Chow, Corrine Wan, Shuwen Chen, Gavin Teo, Gao Song, Ju Xin Chin, Xiaoan Ruan, Ken Wing Kin Sung, Wei-Shou Hu, Miranda Gek Sim Yap, Muriel Bardor, Niranjan Nagarajan, Dong-Yup Lee
Effective development of host cells for therapeutic protein production is hampered by the poor characterization of cellular transfection. Here, we employed a multi-omics-based systems biotechnology approach to elucidate the genotypic and phenotypic differences between a wild-type and recombinant antibody-producing Chinese hamster ovary (CHO) cell line. At the genomic level, we observed extensive rearrangements in specific targeted loci linked to transgene integration sites. Transcriptional re-wiring of DNA damage repair and cellular metabolism in the antibody producer, via changes in gene copy numbers, was also detected...
May 24, 2017: Cell Systems
https://www.readbyqxmd.com/read/28544794/inflammatory-potential-of-diet-weight-gain-and-incidence-of-overweight-obesity-the-sun-cohort
#3
Raúl Ramallal, Estefanía Toledo, J Alfredo Martínez, Nitin Shivappa, James R Hébert, Miguel A Martínez-González, Miguel Ruiz-Canela
OBJECTIVE: This study prospectively assessed the association of the inflammatory potential of a diet using the dietary inflammatory index (DII) with average yearly weight changes and incident overweight/obesity. METHODS: Seven thousand and twenty-seven university graduates with body mass index <25 from the Seguimiento Universidad de Navarra (SUN) cohort were followed up during a median of 8.1 years. The DII, a validated tool based on scientific evidence to appraise the relationship between dietary parameters and inflammatory biomarkers, was used...
June 2017: Obesity
https://www.readbyqxmd.com/read/28544475/thiazole-based-sigma-1-receptor-ligands-diversity-by-late-stage-c-h-arylation-of-thiazoles-structure-affinity-and-selectivity-relationships-and-molecular-interactions
#4
Bernhard Wünsch, Artur Kokornaczyk, Dirk Schepmann, Junichiro Yamaguchi, Kenichiro Itami, Erik Laurini, Maurizio Fermeglia, Sabrina Pricl
Spirocyclic thiophene derivatives represent promising sigma-1 ligands with high sigma-1 affinity and selectivity over the sigma-2 subtype. In order to increase ligand efficiency, the thiophene ring was replaced bioisosterically by a thiazole ring and the pyran ring was opened. Late-stage diversification by regioselective C-H arylation of thiazoles 9a-c resulted in a set of 53 compounds with high diversity. This set of compounds was analyzed with respect to sigma-1 affinity, sigma-1/sigma-2 selectivity, lipophilicity (logD7...
May 24, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28544420/gold-i-hydrides-as-proton-acceptors-in-dihydrogen-bond-formation
#5
Ignacy Cukrowski, Jurgens Hendrik de Lange, Ferdinand Groenewald, Helgard G Raubenheimer
Wavefunction and DFT calculations indicate that anionic dihydride complexes of AuI form strong to moderate directed Au-H···H bonds with one or two HF, H₂O and NH₃ prototype proton donor molecules. The largely electrostatic interaction is influenced by relativistic effects which, however, do not increase the binding energy. Very weak Au···H associations - exhibiting a corresponding bond path - occur between neutral AuH and HF units, although ultimately F becomes the preferred donor atom in the most stable structure...
May 25, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28544292/perioperative-adverse-events-in-patients-on-continued-anticoagulation-undergoing-photoselective-vaporisation-of-the-prostate-with-the-180-w-greenlight-lithium-triborate-laser
#6
Georgia L Knapp, Venu Chalasani, Henry H Woo
OBJECTIVES: To compare perioperative factors and adverse events (AEs) in men undergoing photoselective vaporisation of the prostate (PVP) with or without continued anticoagulation therapy. PATIENTS AND METHODS: Retrospective review of a PVP database of men treated with the 180-W lithium triborate (LBO) laser from 2010 to 2016. Of 373 men, 59 underwent PVP with continued anticoagulant therapy, which was defined as treatment with heparin, warfarin, clopidogrel, dipyridamol or new oral anticoagulant drugs...
May 2017: BJU International
https://www.readbyqxmd.com/read/28544264/ampk-%C3%AE-1-reduces-tumor-progression-and-improves-survival-in-p53-null-mice
#7
Vanessa P Houde, Sara Donzelli, Andrea Sacconi, Sandra Galic, Joanne A Hammill, Jonathan L Bramson, Robert A Foster, Theodoros Tsakiridis, Bruce E Kemp, Giuseppe Grasso, Giovanni Blandino, Paola Muti, Gregory R Steinberg
The AMP-activated protein kinase (AMPK) is a heterotrimeric protein complex that is an important sensor of cellular energy status. Reduced expression of the AMPK β1 isoform has been linked to reduced survival in different cancers but whether this accelerates tumor progression and the potential mechanism mediating these effects is not known. Further, it is unknown whether AMPK β1 is implicated in tumorigenesis and if so what tissues may be most sensitive. In the current study we find that in the absence of the tumor suppressor p53, germline genetic deletion of AMPK β1 accelerates the appearance of a T cell lymphoma that reduces lifespan compared to p53 deficiency alone...
May 24, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28544245/ghrelin-receptor-inverse-agonists-as-a-novel-therapeutic-approach-against-obesity-related-metabolic-disease
#8
Kathrin Abegg, Lara Bernasconi, Melanie Hutter, Lynda Whiting, Claudio Pietra, Claudio Giuliano, Thomas A Lutz, Thomas Riediger
AIMS: Ghrelin is implicated in the control of energy balance and glucose homeostasis. The ghrelin receptor exhibits ligand independent constitutive activity, which can be pharmacologically exploited to induce inverse ghrelin actions. Since ghrelin receptor inverse agonists (GHSR-IA) might be effective for the treatment of obesity-related metabolic disease, we tested two novel synthetic compounds GHSR-IA1 and GHSR-IA2. MATERIALS AND METHODS: In functional cell assays, electrophysiogical and immunohistochemical experiments, we demonstrated inverse agonist activity for GHSR-IA1 and GHSR-IA2...
May 24, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28544221/single-atom-electrocatalysts
#9
Chengzhou Zhu, Shaofang Fu, Qiurong Shi, Dan Du, Yuehe Lin
Recent years have witnessed the increasing production of the sustainable and renewable energy. The limitations of electrochemical performances are closely associated with the search for highly efficient electrocatalysts with more rational control of size, shape, composition and structure. Specifically, the rapidly emerging studies on single-atom catalysts (SACs) have sparked new interests in electrocatalysis because of the unique properties such as high catalytic activity, selectivity and 100% atom utilization...
May 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28544208/ultra-high-field-magnetic-resonance-spectroscopy-in-non-alcoholic-fatty-liver-disease-novel-mechanistic-and-diagnostic-insights-of-energy-metabolism-in-non-alcoholic-steatohepatitis-and-advanced-fibrosis
#10
Stefan Traussnigg, Christian Kienbacher, Martin Gajdošík, Ladislav Valkovič, Emina Halilbasic, Judith Stift, Christian Rechling, Harald Hofer, Petra Steindl-Munda, Peter Ferenci, Fritz Wrba, Siegfried Trattnig, Martin Krššák, Michael Trauner
BACKGROUND & AIMS: With the rising prevalence of non-alcoholic fatty liver disease (NAFLD) and steatohepatitis (NASH) non-invasive tools obtaining pathomechanistic insights to improve risk stratification are urgently needed. We therefore explored high- and ultra-high-field magnetic resonance spectroscopy (MRS) to obtain novel mechanistic and diagnostic insights into alterations of hepatic lipid, cell membrane and energy metabolism across the spectrum of NAFLD. METHODS: MRS and liver biopsy were performed in 30 NAFLD patients with NAFL (n=8) or NASH (n=22)...
April 24, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28544147/short-term-fasting-promotes-insulin-expression-in-rat-hypothalamus
#11
Tamara B Dakic, Tanja V Jevdjovic, Mina I Peric, Ivana M Bjelobaba, Milica B Markelic, Bojana S Milutinovic, Iva V Lakic, Nebojsa I Jasnic, Jelena D Djordjevic, Predrag Z Vujovic
In the hypothalamus, insulin takes on many roles involved in energy homeostasis. Therefore the aim of this study was to examine hypothalamic insulin expression during the initial phase of the metabolic response to fasting. Hypothalamic insulin content was assessed by both radioimmunoassay and western blot. The relative expression of insulin mRNA was examined by q PCR. Immunofluorescence and immunohistochemistry were used to determine the distribution of insulin immunopositivity in the hypothalamus. After six-hour fasting, both glucose and insulin levels were decreased in serum but not in the cerebrospinal fluid...
May 20, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28543847/validation-of-sensewear-armband-in-children-adolescents-and-adults
#12
Guillermo Antonio Lopez, Jan Christian Brønd, Lars Bo Andersen, Magnus Dencker, Daniel Arvidsson
BACKGROUND: SenseWear Armband (SW) is a multisensor monitor to assess physical activity and energy expenditure. Its prediction algorithms have been updated periodically. PURPOSE: To validate SW in children, adolescents and adults. METHODS: The most recent SW algorithm 5.2 (SW5.2) and the previous version 2.2 (SW2.2) were evaluated for estimation of energy expenditure during semi-structured activities in 35 children, 31 adolescents and 36 adults with indirect calorimetry as reference...
May 24, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28543797/simultaneous-use-of-linear-and-nonlinear-gradients-for-b1-inhomogeneity-correction
#13
Koray Ertan, Ergin Atalar
The simultaneous use of linear spatial encoding magnetic fields (L-SEMs) and nonlinear spatial encoding magnetic fields (N-SEMs) in B1(+) inhomogeneity problems is formulated and demonstrated with both simulations and experiments. Independent excitation k-space variables for N-SEMs are formulated for the simultaneous use of L-SEMs and N-SEMs by assuming a small tip angle. The formulation shows that, when N-SEMs are considered as an independent excitation k-space variable, numerous different k-space trajectories and frequency weightings differing in dimension, length, and energy can be designed for a given target transverse magnetization distribution...
May 25, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28543761/experimental-characterization-of-a-direct-conversion-amorphous-selenium-detector-with-thicker-conversion-layer-for-dual-energy-contrast-enhanced-breast-imaging
#14
David A Scadutom, Olivier Tousignant, Wei Zhao
PURPOSE: Dual-energy contrast-enhanced imaging is being investigated as a tool to identify and localize angiogenesis in the breast, a possible indicator of malignant tumors. This imaging technique requires that x-ray images are acquired at energies above the k-shell binding energy of an appropriate radiocontrast agent. Iodinated contrast agents are commonly used for vascular imaging, and require x-ray energies greater than 33 keV. Conventional direct conversion amorphous selenium (a-Se) flat panel imagers for digital mammography show suboptimal absorption efficiencies at these higher energies...
May 21, 2017: Medical Physics
https://www.readbyqxmd.com/read/28543610/metallic-nanoparticles-irradiated-by-low-energy-protons-for-radiation-therapy-are-there-significant-physical-effects-to-enhance-the-dose-delivery
#15
Anne-Catherine Heuskin, Bernard Gallez, Olivier Feron, Philippe Martinive, Carine Michiels, Stéphane Lucas
PURPOSE: To identify which physical properties of nanoparticles are correlated to the survival fraction of cells exposed in vitro to low energy protons in combination with nanoparticles. METHODS: The Geant4 simulation toolkit (version 10.3) was used to model nanoparticles of different sizes (5 to 50 nm) and materials (Ti, Zr, Hf, Ta, Au, Pt), with or without an organic capping ensuring biocompatibility and to irradiate them with 1.3 or 4 MeV protons and 5.3 MeV alpha particles...
May 23, 2017: Medical Physics
https://www.readbyqxmd.com/read/28543599/optimization-of-screw-fixation-in-rat-bone-with-extracorporeal-shock-waves
#16
Marianne K E Koolen, Moyo C Kruyt, Amir A Zadpoor, F C Öner, Harrie Weinans, Olav P van der Jagt
Screw fixation in osteoporotic patients is becoming an increasing problem in orthopaedic surgery as deterioration of cortical and cancellous bone hamper biomechanical stability and screw fixation. This might result in delayed weight-bearing or failure of instrumentation. We hypothesized that local peri-operative shock wave treatment can optimize osseointegration and subsequent screw fixation. In eight female Wistar rats, two cancellous and two cortical bone screws were implanted in both femora and tibiae. Immediately after implantation, 3...
May 24, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28543565/lactate-supplementation-in-severe-traumatic-brain-injured-adults-by-primed-constant-infusion-of-sodium-l-lactate
#17
Stephanie M Wolahan, Howard C Mao, Courtney Real, Paul M Vespa, Thomas C Glenn
Carbohydrate fuel augmentation following traumatic brain injury may be a viable treatment to improve recovery when cerebral oxidative metabolism of glucose is depressed. We performed a primed constant sodium L-lactate infusion in 11 moderate to severely brain injured adults. Blood was collected before and periodically during the infusion study. We quantified global cerebral uptake of glucose and lactate and other systemic metabolites associated with energy metabolism. Our hypothesis was that cerebral lactate uptake, as measured by the arteriovenous difference of lactate (AVDlac), would increase in severely injured TBI patients in the neurocritical care unit...
May 20, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28543277/experimental-study-of-cryofreezing-energy-applications-on-the-ventricular-myocardium-using-sheep-hearts
#18
Kaoru Okishige, Peter L Friedman
BACKGROUND: Cryofreezing energy has been utilized to abolish arrhythmogenic substrates of various kinds of tachyarrhythmias. However, systematic electrophysiological and histological investigations of cryothermia have never been performed. The aim of this study was to clarify those aspects using sheep beating hearts. METHODS: A total of eight adult sheep were utilized under total anesthesia, and a pericardial cradle was made by opening the pericardium. Eight epicardial plaque electrodes were sutured on the epicardial surface of the left ventricle 2∼3 cm apart from each other...
May 23, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28543058/shallow-size-density-relations-within-mammal-clades-suggest-greater-intra-guild-ecological-impact-of-large-bodied-species
#19
R Ø Pedersen, S Faurby, J-C Svenning
1.Population densities of species have a predictable relationship to their body mass on a global scale. This relationship is known as the size-density relationship. The relationship was originally found to be directly opposite of metabolic rate scaling, which led to the hypothesis of energetic equivalence. However, recent studies have suggested that the size-density relationship varies between clades. Specifically, the size-density relationship for certain mammal clades has been found to be less negative than the relationship across all mammals...
May 24, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28542952/compensatory-and-decompensatory-alterations-in-cardiomyocyte-ca-2-dynamics-in-hearts-with-diastolic-dysfunction-following-aortic-banding
#20
Sara Gattoni, Åsmund Treu Røe, Jan Magnus Aronsen, Ivar Sjaastad, William E Louch, Nicolas P Smith, Steven A Niederer
KEY POINTS: At the cellular level cardiac hypertrophy causes remodelling, leading to changes in ionic channel, pump and exchanger densities and kinetics. Previous studies have focused on quantifying changes in channels, pumps and exchangers without quantitatively linking these changes with emergent cellular scale functionality. Two biophysical cardiac cell models were created, parameterized and validated and are able to simulate electrophysiology and calcium dynamics in myocytes from control sham operated rats and aortic-banded rats exhibiting diastolic dysfunction...
May 21, 2017: Journal of Physiology
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