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https://www.readbyqxmd.com/read/28105807/laboratory-setup-for-scanning-free-grazing-emission-x-ray-fluorescence
#1
J Baumann, C Herzog, M Spanier, D Grötzsch, L Lühl, K Witte, A Jonas, S Günther, F Förste, R Hartmann, M Huth, D Kalok, D Steigenhöfer, M Krämer, T Holz, R Dietsch, L Strüder, B Kanngießer, I Mantouvalou
Grazing incidence and grazing emission X-ray fluorescence spectroscopy (GI/GE-XRF) are techniques that enable nondestructive, quantitative analysis of elemental depth profiles with a resolution in the nanometer regime. A laboratory setup for soft X-ray GEXRF measurements is presented. Reasonable measurement times could be achieved by combining a highly brilliant laser produced plasma (LPP) source with a scanning-free GEXRF setup, providing a large solid angle of detection. The detector, a pnCCD, was operated in a single photon counting mode in order to utilize its energy dispersive properties...
January 10, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28105691/the-alcohol-sensitive-period-during-early-octavolateral-organ-development-in-zebrafish-danio-rerio
#2
Lilliann Y Zamora, Kayla C Miguel, Zhongmin Lu
Fetal alcohol exposure can cause Fetal Alcohol Spectrum Disorders (FASD), completely preventable developmental disabilities characterized by permanent birth defects. However, specific gestational timing when developing organs are most sensitive to alcohol exposure is unclear. In this study, we examined the temporal effects of embryonic alcohol exposure on octavolateral organs in zebrafish (Danio rerio), including inner ears and lateral line neuromasts that function in hearing, balance, and hydrodynamic detection, respectively...
January 20, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28103314/expression-of-a-mutant-sema3a-protein-with-diminished-signalling-capacity-does-not-alter-als-related-motor-decline-or-confer-changes-in-nmj-plasticity-after-botoxa-induced-paralysis-of-male-gastrocnemic-muscle
#3
Elizabeth B Moloney, Barbara Hobo, Fred De Winter, Joost Verhaagen
Terminal Schwann cells (TSCs) are specialized cells that envelop the motor nerve terminal, and play a role in the maintenance and regeneration of neuromuscular junctions (NMJs). The chemorepulsive protein semaphorin 3A (SEMA3A) is selectively up-regulated in TSCs on fast-fatigable muscle fibers following experimental denervation of the muscle (BotoxA-induced paralysis or crush injury to the sciatic nerve) or in the motor neuron disease amyotrophic lateral sclerosis (ALS). Re-expression of SEMA3A in this subset of TSCs is thought to play a role in the selective plasticity of nerve terminals as observed in ALS and following BotoxA-induced paralysis...
2017: PloS One
https://www.readbyqxmd.com/read/28101232/feasibility-and-application-of-single-hole-video-assisted-thoracoscope-in-pulmonary-peripheral-tumors
#4
Xin Wang, Lei Wang, Hao Zhang, Ke Li, Xiangnan Gong
The feasibility and clinical application of single-hole video-assisted thoracoscope in pulmonary peripheral tumors was examined. From March, 2011 to March, 2015, we retrospectively analyzed the clinical data obtained from 32 patients with pulmonary peripheral tumor that received single-hole thoracoscopic surgery. We completed the surgery via a 1.5-cm incision on the seventh or eighth rib in midaxillary line as the observation hole, and a 4.0-5.0-cm incision in the lateral margin of pectoralis major in the fourth or fifth rib in midaxillary line as the operation hole...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28100806/the-lateral-line-confers-evolutionarily-derived-sleep-loss-in-the-mexican-cavefish
#5
James Jaggard, Beatriz G Robinson, Bethany A Stahl, Ian Oh, Pavel Masek, Masato Yoshizawa, Alex C Keene
Sleep is an essential behavior exhibited by nearly all animals, and disruption of this process is associated with an array of physiological and behavioral deficits. Sleep is defined by changes in sensory gating that reduce sensory input to the brain, but little is known about the neural basis for interactions between sleep and sensory processing. Blind Mexican cavefish comprise an extant surface dwelling form and 29 cave morphs that have independently evolved increased numbers of mechanoreceptive lateral line neuromasts and convergent evolution of sleep loss...
January 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28100795/lateral-line-makes-pach%C3%A3-n-cavefish-sleepless
#6
Kathryn Knight
No abstract text is available yet for this article.
January 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28100780/a-novel-microrna-located-in-trkc-gene-regulates-wnt-signaling-pathway-and-is-differentially-expressed-in-colorectal-cancer-specimens
#7
Sadat Dokanehiifard, Atena Yasari, Hadi Najafi, Meisam Jafarzadeh, Maryam Nikkhah, Seyed Javad Mowla, Bahram M Soltani
Tropomyosin receptor kinase C (TrkC) is involved in cell survival, apoptosis, differentiation and tumorigenesis. TrkC diverse functions might be attributed to the hypothetical non-coding RNAs, embedded within the gene. Using bioinformatics approaches, a novel miRNA named TrkC-miR2 was predicted within TrkC gene, capable of regulating Wnt pathway. For experimental verification of this miRNA, predicted TrkC-premir2 sequence was overexpressed in SW480 cells, which led to the detection of two mature TrkC-miR2 isomiRs, and their endogenous forms were detected in human cell lines as well...
January 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28100024/evaluation-of-cast-re-orientation-on-a-dental-surveyor-using-three-tripod-techniques-a-survey-and-in-vitro-study
#8
Mohammed E Sayed, Idris A Busaily, Rana J Nahari, Ruaa O Hakami, Sami M Maashi, Naveen R Ramireddy
PURPOSE: To survey different educational levels (i.e., students, interns, technicians, and prosthodontic faculty) with regard to their opinions, attitudes, and adoption of three selected tripod techniques. The study will also investigate the accuracy of these techniques to reposition casts on the dental surveyor in anterio-posterior (AP) and lateral directions at both technique and educational levels. MATERIALS AND METHODS: Tripod points, scored lines, and cemented post tripod techniques were used in this study...
January 18, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28097845/-fatal-case-of-rickettsiosis-in-a-toddler-from-southeastern-mexico
#9
César Lugo-Caballero, Karla Dzul-Rosado, Georgina Rodríguez-Moreno, Raúl Tello-Martín, Karina López-Ávila, Jorge Zavala-Castro
Rocky Mountain spotted fever is a disease caused by Rickettsia rickettsii, a bacteria transmitted by infected ticks. It is characterized by fever, exanthema, arthralgias and myalgias; but sometimes its clinical presentation is non specific. Due to its similarities with other exanthematic diseases like dengue or chikungunya, Rocky Mountain spotted fever is not a first line diagnosis, even though countries like Mexico show the ecologic and socioeconomic characteristics that favor its transmission, with a 30% mortality rate among pediatric patients...
1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28097640/priming-increases-the-anti-tumor-effect-and-therapeutic-window-of-177-lu-octreotate-in-nude-mice-bearing-human-small-intestine-neuroendocrine-tumor-got1
#10
Johanna Dalmo, Johan Spetz, Mikael Montelius, Britta Langen, Yvonne Arvidsson, Henrik Johansson, Toshima Z Parris, Khalil Helou, Bo Wängberg, Ola Nilsson, Maria Ljungberg, Eva Forssell-Aronsson
BACKGROUND: (177)Lu-[DOTA(0), Tyr(3)]-octreotate ((177)Lu-octreotate) is used for treatment of patients with somatostatin receptor (SSTR) expressing neuroendocrine tumors. However, complete tumor remission is rarely seen, and optimization of treatment protocols is needed. In vitro studies have shown that irradiation can up-regulate the expression of SSTR1, 2 and 5, and increase (177)Lu-octreotate uptake. The aim of the present study was to examine the anti-tumor effect of a (177)Lu-octreotate priming dose followed 24 h later by a second injection of (177)Lu-octreotate compared to a single administration of (177)Lu-octreotate, performed on the human small intestine neuroendocrine tumor cell line, GOT1, transplanted to nude mice...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28095710/the-evolving-role-of-chemotherapy-in-prostate-cancer
#11
Suliman Boulos, Danish Mazhar
Despite extensive clinical research of different chemotherapy agents for more than three decades, the role of chemotherapy in prostate cancer was only established in 2004, after demonstrating a survival benefit with docetaxel in metastatic castration-resistant prostate cancer. 6 years later, second-line chemotherapy using cabazitaxel, after disease progression on docetaxel, demonstrated an additional survival improvement. Recently, docetaxel given alongside standard hormonal therapy in newly diagnosed advanced prostate cancer was found to lead to significantly improved patient outcomes...
January 18, 2017: Future Oncology
https://www.readbyqxmd.com/read/28090144/maximal-power-training-induced-different-improvement-in-throwing-velocity-and-muscle-strength-according-to-playing-positions-in-elite-male-handball-players
#12
M Cherif, H Chtourou, N Souissi, A Aouidet, K Chamari
This study was designed to assess the effect of strength and power training on throwing velocity and muscle strength in handball players according to their playing positions. Twenty-two male handball players were assigned to either an experimental group (n=11) or a control group (n=11) (age: 22.1 ± 3.0 years). They were asked to complete (i) the ball throwing velocity test and (ii) the one-repetition maximum (1-RM) tests for the half-back squat, the pull-over, the bench press, the developed neck, and the print exercises before and after 12 weeks of maximal power training...
December 2016: Biology of Sport
https://www.readbyqxmd.com/read/28089511/the-descending-diencephalic-dopamine-system-is-tuned-to-sensory-stimuli
#13
Sebastian Reinig, Wolfgang Driever, Aristides B Arrenberg
The vertebrate diencephalic A11 system provides the sole dopaminergic innervation of hindbrain and spinal cord and has been implicated in modulation of locomotion and sensory processes. However, the exact contributions of sensory stimuli and motor behavior to A11 dopaminergic activity remain unclear. We recorded cellular calcium activity in four anatomically distinct posterior tubercular A11-type dopaminergic subgroups and two adjacent hypothalamic dopaminergic groups in GCaMP7a-transgenic, semi-restrained zebrafish larvae...
January 6, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28089495/assessment-of-the-isometry-of-the-anterolateral-ligament-in-a-3-dimensional-weight-bearing-computed-tomography-simulation
#14
Karl Wieser, Philipp Fürnstahl, Fabio Carrillo, Sandro F Fucentese, Lazaros Vlachopoulos
PURPOSE: To simulate the most isometric insertion points of the anterolateral ligament (ALL) in a weight-bearing 3-dimensional computed tomography (CT) model using previously published anatomic landmarks and to define radiographic landmarks, which make for an easier identification of the optimal insertion points. METHODS: The most isometric femoral insertion points were analyzed for 10 individuals, using data of weight-bearing CT scans in increasing knee flexion positions...
January 12, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28089081/asthma-chronic-obstructive-pulmonary-disease-overlap-syndrome-literature-review-and-contributions-towards-a-portuguese-consensus
#15
D Araújo, E Padrão, M Morais-Almeida, J Cardoso, F Pavão, R B Leite, A C Caldas, A Marques
INTRODUCTION: Phenotypic overlap between the two main chronic airway pulmonary diseases, asthma and chronic obstructive pulmonary disease (COPD), has been the subject of debate for decades, and recently the nomenclature of asthma-COPD overlap syndrome (ACOS) was adopted for this condition. The definition of this entity in the literature is, however, very heterogeneous, it is therefore important to define how it applies to Portugal. METHODS: A literature review of ACOS was made in a first phase resulting in the drawing up of a document that was later submitted for discussion among a panel of chronic lung diseases experts, resulting in reflexions about diagnosis, treatment and clinical guidance for ACOS patients...
January 6, 2017: Revista Portuguesa de Pneumologia
https://www.readbyqxmd.com/read/28088537/mouse-models-of-frontotemporal-dementia-a-comparison-of-phenotypes-with-clinical-symptomatology
#16
REVIEW
Rebekah M Ahmed, Muireann Irish, Janet van Eersel, Arne Ittner, Yazi D Ke, Alexander Volkerling, Julia van der Hoven, Kimi Tanaka, Tim Karl, Michael Kassiou, Jillian J Kril, Olivier Piguet, Jürgen Götz, Matthew C Kiernan, Glenda M Halliday, John R Hodges, Lars M Ittner
Frontotemporal dementia (FTD) is the second most common cause of young onset dementia. It is increasingly recognized that there is a clinical continuum between FTD and amyotrophic lateral sclerosis (ALS). At a clinical, pathological and genetic level there is much heterogeneity in FTD, meaning that our understanding of this condition, pathophysiology and development of treatments has been limited. A number of mouse models focusing predominantly on recapitulating neuropathological and molecular changes of disease have been developed, with most transgenic lines expressing a single specific protein or genetic mutation...
January 11, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28088280/comparative-study-of-colloidal-gold-and-quantum-dots-as-labels-for-multiplex-screening-tests-for-multi-mycotoxin-detection
#17
Astrid Foubert, Natalia V Beloglazova, Sarah De Saeger
Quantum dots (QDs) and colloidal gold nanoparticles (CG) were evaluated as labels for multiplex lateral flow immunoassay (LFIA) for determination of mycotoxins deoxynivalenol (DON), zearalenone (ZEN) and T2/HT2-toxin (T2/HT2) in cereal matrices. Both developed assays were based on the same immunoreagents (except for the labels), therefore their analytical characteristics could be objectively compared. For both LFIAs antigens (DON-ovalbumin (OVA), ZEN-OVA and T2-OVA) and rabbit anti-mouse immunoglobulin were immobilized on a nitrocellulose membrane as three test lines and one control line, respectively...
February 22, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28088213/glycine-alanine-dipeptide-repeat-protein-contributes-to-toxicity-in-a-zebrafish-model-of-c9orf72-associated-neurodegeneration
#18
Yu Ohki, Andrea Wenninger-Weinzierl, Alexander Hruscha, Kazuhide Asakawa, Koichi Kawakami, Christian Haass, Dieter Edbauer, Bettina Schmid
BACKGROUND: The most frequent genetic cause of frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS) is the expansion of a GGGGCC hexanucleotide repeat in a non-coding region of the chromosome 9 open reading frame 72 (C9orf72) locus. The pathological hallmarks observed in C9orf72 repeat expansion carriers are the formation of RNA foci and deposition of dipeptide repeat (DPR) proteins derived from repeat associated non-ATG (RAN) translation. Currently, it is unclear whether formation of RNA foci, DPR translation products, or partial loss of C9orf72 predominantly drive neurotoxicity in vivo...
January 14, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28087632/sequential-organogenesis-sets-two-parallel-sensory-lines-in-medaka
#19
Ali Seleit, Isabel Krämer, Elizabeth Ambrosio, Nicolas Dross, Ulrike Engel, Lázaro Centanin
Animal organs are typically formed during embryogenesis by following one specific developmental programme. Here we report that neuromast organs are generated by two distinct and sequential programmes that result in parallel sensory lines in medaka embryos. A ventral posterior lateral line (pLL) is composed of neuromasts deposited by collectively migrating cells while a midline pLL is formed by individually migrating cells. Despite the variable number of neuromasts among embryos, the sequential programmes that we describe here fix an invariable ratio between ventral and midline neuromasts...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28086964/anti-%C3%AE-synuclein-immunotherapy-reduces-%C3%AE-synuclein-propagation-in-the-axon-and-degeneration-in-a-combined-viral-vector-and-transgenic-model-of-synucleinopathy
#20
Brian Spencer, Elvira Valera, Edward Rockenstein, Cassia Overk, Michael Mante, Anthony Adame, Wagner Zago, Peter Seubert, Robin Barbour, Dale Schenk, Dora Games, Robert A Rissman, Eliezer Masliah
Neurodegenerative disorders such as Parkinson's Disease (PD), PD dementia (PDD) and Dementia with Lewy bodies (DLB) are characterized by progressive accumulation of α-synuclein (α-syn) in neurons. Recent studies have proposed that neuron-to-neuron propagation of α-syn plays a role in the pathogenesis of these disorders. We have previously shown that antibodies against the C-terminus of α-syn reduce the intra-neuronal accumulation of α-syn and related deficits in transgenic models of synucleinopathy, probably by abrogating the axonal transport and accumulation of α-syn in in vivo models...
January 13, 2017: Acta Neuropathologica Communications
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