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https://www.readbyqxmd.com/read/28105997/first-successful-transcatheter-double-valve-replacement-from-a-transapical-access-and-nine-month-follow-up
#1
Robert Bauernschmitt, Stefan Bauer, Christian Liewald, Ramiz Emini, Wolfgang Oechsner, Meinrad Beer, Ralf Sodian, Andreas Liebold
AIMS: While TAVI is the treatment of choice in patients with aortic stenosis considered inoperable or at high risk, interventional replacement of the mitral valve is still in the preclinical or early clinical phase. Our aim was to report on the first transcatheter double valve replacement into native valves from a transapical access. METHODS AND RESULTS: A 67-year-old, highly symptomatic female patient considered inoperable due to severe calcification of the mitral annulus and comorbidities was scheduled for transcatheter double valve replacement by the local Heart Team...
January 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28101134/single-cell-isolation-process-with-laser-induced-forward-transfer
#2
Yu Deng, Philippe Renaud, Zhongning Guo, Zhigang Huang, Ying Chen
BACKGROUND: A viable single cell is crucial for studies of single cell biology. In this paper, laser-induced forward transfer (LIFT) was used to isolate individual cell with a closed chamber designed to avoid contamination and maintain humidity. Hela cells were used to study the impact of laser pulse energy, laser spot size, sacrificed layer thickness and working distance. The size distribution, number and proliferation ratio of separated cells were statistically evaluated. Glycerol was used to increase the viscosity of the medium and alginate were introduced to soften the landing process...
2017: Journal of Biological Engineering
https://www.readbyqxmd.com/read/28100198/mr-imaging-for-detection-of-trampoline-injuries-in-children
#3
E Hauth, H Jaeger, P Luckey, M Beer
BACKGROUND: The recreational use of trampolines is an increasingly popular activity among children and adolescents. Several studies reported about radiological findings in trampoline related injuries in children. The following publication presents our experience with MRI for detection of trampoline injuries in children. METHODS: 20 children (mean 9.2 years, range: 4-15 years) who had undergone an MRI study for detection of suspected trampoline injuries within one year were included...
January 18, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28098791/development-of-high-throughput-method-for-measurement-of-vascular-nitric-oxide-generation-in-microplate-reader
#4
Soad S Abd El-Hay, Christa L Colyer
BACKGROUND: Despite the importance of nitric oxide (NO) in vascular physiology and pathology, a high-throughput method for the quantification of its vascular generation is lacking. OBJECTIVE: By using the fluorescent probe 4-amino-5-methylamino-2',7'-difluorofluorescein (DAF-FM), we have optimized a simple method for the determination of the generation of endothelial nitric oxide in a microplate format. METHODS: A nitric oxide donor was used (3-morpholinosydnonimine hydrochloride, SIN-1)...
January 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28098753/reagent-less-and-robust-biosensor-for-direct-determination-of-lactate-in-food-samples
#5
Iria Bravo, Mónica Revenga-Parra, Félix Pariente, Encarnación Lorenzo
Lactic acid is a relevant analyte in the food industry, since it affects the flavor, freshness, and storage quality of several products, such as milk and dairy products, juices, or wines. It is the product of lactose or malo-lactic fermentation. In this work, we developed a lactate biosensor based on the immobilization of lactate oxidase (LOx) onto N,N'-Bis(3,4-dihydroxybenzylidene) -1,2-diaminobenzene Schiff base tetradentate ligand-modified gold nanoparticles (3,4DHS-AuNPs) deposited onto screen-printed carbon electrodes, which exhibit a potent electrocatalytic effect towards hydrogen peroxide oxidation/reduction...
January 13, 2017: Sensors
https://www.readbyqxmd.com/read/28092760/serum-brain-derived-neurotrophic-factor-and-stability-of-depressive-symptoms-in-coronary-heart-disease-patients-a-prospective-study
#6
Stella L Kuhlmann, Mira Tschorn, Volker Arolt, Katja Beer, Julia Brandt, Laura Grosse, Wilhelm Haverkamp, Jacqueline Müller-Nordhorn, Nina Rieckmann, Johannes Waltenberger, Katharina Warnke, Rainer Hellweg, Andreas Ströhle
OBJECTIVE: Brain-derived neurotrophic factor (BDNF) supports neurogenesis, angiogenesis, and promotes the survival of various cell types in the brain and the coronary system. Moreover, BDNF is associated with both coronary heart disease (CHD) and depression. The current study aims to investigate whether serum BDNF levels are associated with the course of depressive symptoms in CHD patients. METHODS: At baseline, N=225 CHD patients were enrolled while hospitalized...
December 23, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28092475/temperature-development-on-the-external-root-surface-during-laser-assisted-endodontic-treatment-applying-a-microchopped-mode-of-a-980%C3%A2-nm-diode-laser
#7
Franziska Beer, Eleftherios Terry R Farmakis, Josip Kopic, Christoph Kurzmann, Andreas Moritz
OBJECTIVE: The aim of this article was to investigate the temperature increase of the external root surface during laser-assisted endodontic treatment using a diode laser (980 nm) in a microchopped mode. METHODS: Ten freshly extracted, human maxillary incisors with mature apices were collected, prepared to size F4 at working length (ProTaper; Dentsply Maillefer, Ballaigues, Switzerland), mounted to a holder, and irradiated (using spiral movements in coronal direction) with a diode laser (GENTLEray 980 Classic Plus; KaVo, Biberach, Germany) with a 200 μm fiber in four different treatment groups: Group 1 (control group) was irradiated in six cycles of 5-sec irradiation/20-sec pause with 2...
January 12, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28091624/paracrine-cross-talk-between-skeletal-muscle-and-macrophages-in-exercise-by-pgc-1%C3%AE-controlled-bnp
#8
Regula Furrer, Petra S Eisele, Alexander Schmidt, Markus Beer, Christoph Handschin
Activation of resident and infiltrating immune cells is a central event in training adaptation and other contexts of skeletal muscle repair and regeneration. A precise orchestration of inflammatory events in muscle fibers and immune cells is required after recurrent contraction-relaxation cycles. However, the mechanistic aspects of this important regulation remain largely unknown. We now demonstrate that besides a dominant role in controlling cellular metabolism, the peroxisome proliferator-activated receptor γ co-activator 1α (PGC-1α) also has a profound effect on cytokine expression in muscle tissue...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28091279/aflatoxin-m1-in-human-breast-milk-in-shahrekord-iran-and-association-with-dietary-factors
#9
Tina Jafari, Aziz A Fallah, Soleiman Kheiri, Abdolmajid Fadaei, Sayed Asadollah Amini
This survey was conducted to determine the occurrence and levels of aflatoxin M1 (AFM1) in 250 breast milk samples of lactating mothers, obtained from urban and rural regions of Shahrekord, Iran. Moreover, the association between AFM1 occurrence levels and dietary factors were assessed. AFM1 analysis was carried out using the competitive enzyme-linked immunosorbent assay (ELISA) technique for screening and high-performance liquid chromatography with fluorescence detection (HPLC-FLD) for confirmatory purposes...
January 16, 2017: Food Additives & Contaminants. Part B, Surveillance
https://www.readbyqxmd.com/read/28089785/mechanistic-modelling-of-infrared-mediated-energy-transfer-during-the-primary-drying-step-of-a-continuous-freeze-drying-process
#10
Pieter-Jan Van Bockstal, Séverine Thérèse F C Mortier, Laurens De Meyer, Jos Corver, Chris Vervaet, Ingmar Nopens, Thomas De Beer
Conventional pharmaceutical freeze-drying is an inefficient and expensive batch-wise process, associated with several disadvantages leading to an uncontrolled end product variability. The proposed continuous alternative, based on spinning the vials during freezing and on optimal energy supply during drying, strongly increases process efficiency and improves product quality (uniformity). The heat transfer during continuous drying of the spin frozen vials is provided via non-contact infrared (IR) radiation. The energy transfer to the spin frozen vials should be optimised to maximise the drying efficiency while avoiding cake collapse...
January 12, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28089456/protective-effects-of-exercise-training-on-endothelial-dysfunction-induced-by-total-sleep-deprivation-in-healthy-subjects
#11
Fabien Sauvet, Pierrick J Arnal, Pierre Emmanuel Tardo-Dino, Catherine Drogou, Pascal Van Beers, Clément Bougard, Arnaud Rabat, Garance Dispersyn, Alexandra Malgoyre, Damien Leger, Danielle Gomez-Merino, Mounir Chennaoui
BACKGROUND: Sleep loss is a risk factor for cardiovascular events mediated through endothelial dysfunction. AIMS: To determine if 7weeks of exercise training can limit cardiovascular dysfunction induced by total sleep deprivation (TSD) in healthy young men. METHODS: 16 subjects were examined during 40-h TSD, both before and after 7weeks of interval exercise training. Vasodilatation induced by ACh, insulin and heat (42°C) and pulse wave velocity (PWV), blood pressure and heart rate (HR) were assessed before TSD (controlday), during TSD, and after one night of sleep recovery...
January 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28087694/iso-%C3%AE-acids-bitter-components-of-beer-prevent-inflammation-and-cognitive-decline-induced-in-a-mouse-model-of-alzheimer-s-disease
#12
Yasuhisa Ano, Atsushi Dhata, Yoshimasa Taniguchi, Ayaka Hoshi, Kazuyuki Uchida, Akihiko Takashima, Hiroyuki Nakayama
Alongside the rapid growth in aging populations worldwide, prevention and therapy for age-related memory decline and dementia are in great demand to maintain a long healthy life. Here we found that iso-α-acids, hop-derived bitter compounds in beer, enhance microglial phagocytosis and suppress inflammation via activation of the peroxisome proliferator-activated receptor (PPAR-γ). In normal mice, oral administration of iso-α-acids led to a significant increase both in CD11b and CD206 double-positive anti-inflammatory type microglia (P<0...
January 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28087429/analysis-of-parameters-that-affect-human-hematopoietic-cell-outputs-in-mutant-c-kit-immunodeficient-mice
#13
Paul H Miller, Gabrielle Rabu, Margarita MacAldaz, David Jhf Knapp, Alice Ms Cheung, Kiran Dhillon, Naoto Nakamichi, Philip A Beer, Leonard D Shultz, R Keith Humphries, Connie J Eaves
Xenograft models are transforming our understanding of the output capabilities of primitive human hematopoietic cells in vivo. However, many variables that affect post-transplant reconstitution dynamics remain poorly understood. Here we show an equivalent level of human chimerism can be regenerated from human CD34(+) cord blood cells transplanted intravenously either with or without additional radiation-inactivated cells into 2-6 month-old NOD-Rag1(-/-)-IL2Rγc(-/-) (NRG) mice given a more radioprotective conditioning regimen than is possible in conventionally used, repair-deficient, NOD-Prkdc(scid/scid)-IL2Rγc(-/-) (NSG) hosts...
January 10, 2017: Experimental Hematology
https://www.readbyqxmd.com/read/28078531/yeast-mixture-of-liquid-beer-and-cassava-pulp-with-rice-straw-for-the-growth-of-dairy-heifers
#14
Sukanya Kamphayae, Hajime Kumagai, Patima Butcha, Viroj Ritruechai, Supachai Udchachon
This study was conducted to determine the effects of mixtures of liquid brewer's yeast (LBY) and cassava pulp (CVP) with rice straw (RS) on feed intake, digestibility, rumen fermentation, and growth of dairy heifers. Sixteen Holstein crossbred heifers (13.8 ± 1.6 months old, 210 ± 23 kg body weight (BW)) were randomly allocated to four feeding treatments with four replications, which were 0:0:100 (RS), 0:70:30 (0%LBY), 20:50:30 (20%LBY), and 50:20:30 (50%LBY), respectively, for LBY/CVP/RS on a fresh matter basis...
January 11, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28078412/simultaneous-determination-of-four-food-allergens-using-compact-disc-immunoassaying-technology
#15
Ahmed Ali Badran, Sergi Morais, Ángel Maquieira
A multiplex competitive microimmunoassay for the simultaneous determination of gliadin, casein, β-lactoglobulin, and ovalbumin is presented. The assay in microarray format is performed on a DVD where the allergens are physisorbed on the polycarbonate surface of the disc. The immunointeraction is detected using a mixture of specific gold-labeled antibodies and the signal amplified with the silver enhancement method. The optical density of the precipitate, read by a DVD drive, is related to the concentration of the four allergens in sample...
January 11, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28076756/dissociation-of-survival-proliferation-and-state-control-in-human-hematopoietic-stem-cells
#16
David J H F Knapp, Colin A Hammond, Paul H Miller, Gabrielle M Rabu, Philip A Beer, Marketa Ricicova, Véronique Lecault, Daniel Da Costa, Michael VanInsberghe, Alice M Cheung, Davide Pellacani, James Piret, Carl Hansen, Connie J Eaves
The role of growth factors (GFs) in controlling the biology of human hematopoietic stem cells (HSCs) remains limited by a lack of information concerning the individual and combined effects of GFs directly on the survival, Mitogenesis, and regenerative activity of highly purified human HSCs. We show that the initial input HSC activity of such a purified starting population of human cord blood cells can be fully maintained over a 21-day period in serum-free medium containing five GFs alone. HSC survival was partially supported by any one of these GFs, but none were essential, and different combinations of GFs variably stimulated HSC proliferation...
January 10, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28073553/the-effects-of-light-intensity-on-the-growth-of-japanese-gambierdiscus-spp-dinophyceae
#17
Takamichi Yoshimatsu, Chaoyu Tie, Haruo Yamaguchi, Hiroshi Funaki, Chiho Honma, Kouki Tanaka, Masao Adachi
Marine toxic dinoflagellates of the genus Gambierdiscus are the causative agents of ciguatera fish poisoning (CFP), a form of seafood poisoning that is widespread in tropical, subtropical and temperate regions worldwide. The distributions of Gambierdiscus australes, Gambierdiscus scabrosus and two phylotypes of Gambierdiscus spp. type 2 and type 3 have been reported for the waters surrounding the main island of Japan. To explore the bloom dynamics and the vertical distribution of these Japanese species and phylotypes of Gambierdiscus, the effects of light intensity on their growth were tested, using a photoirradiation-culture system...
December 2016: Harmful Algae
https://www.readbyqxmd.com/read/28069390/continuous-direct-compression-as-manufacturing-platform-for-sustained-release-tablets
#18
B Van Snick, J Holman, C Cunningham, A Kumar, J Vercruysse, T De Beer, J P Remon, C Vervaet
This study presents a framework for process and product development on a continuous direct compression manufacturing platform. A challenging sustained release formulation with high content of a poorly flowing low density drug was selected. Two HPMC grades were evaluated as matrix former: standard Methocel CR and directly compressible Methocel DC2. The feeding behavior of each formulation component was investigated by deriving feed factor profiles. The maximum feed factor was used to estimate the drive command which strongly depended upon the density of the material...
January 6, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28069290/classical-swine-fever-vaccines-state-of-the-art
#19
Sandra Blome, Claudia Moß, Ilona Reimann, Patricia König, Martin Beer
Due to its impact on animal health and pig industry, classical swine fever (CSF) is still one of the most important viral diseases of pigs. To control the disease, safe and highly efficacious live attenuated vaccines exist for decades. These vaccines have usually outstanding efficacy and safety but lack differentiability of infected from vaccinated animals (DIVA or marker strategy). In contrast, the first generation of E2 subunit marker vaccines shows constraints in efficacy, application, and production. To overcome these limitations, new generations of marker vaccines are developed...
January 3, 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28066989/high-open-circuit-voltages-in-tin-rich-low-bandgap-perovskite-based-planar-heterojunction-photovoltaics
#20
Baodan Zhao, Mojtaba Abdi-Jalebi, Maxim Tabachnyk, Hugh Glass, Varun S Kamboj, Wanyi Nie, Andrew J Pearson, Yuttapoom Puttisong, Karl C Gödel, Harvey E Beere, David A Ritchie, Aditya D Mohite, Siân E Dutton, Richard H Friend, Aditya Sadhanala
Low-bandgap CH3 NH3 (Pbx Sn1-x )I3 (0 ≤ x ≤ 1) hybrid perovskites (e.g., ≈1.5-1.1 eV) demonstrating high surface coverage and superior optoelectronic properties are fabricated. State-of-the-art photovoltaic (PV) performance is reported with power conversion efficiencies approaching 10% in planar heterojunction architecture with small (<450 meV) energy loss compared to the bandgap and high (>100 cm(2) V(-1) s(-1) ) intrinsic carrier mobilities.
January 2017: Advanced Materials
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