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https://www.readbyqxmd.com/read/28215012/threatened-species-to-super-abundance-the-unexpected-international-implications-of-successful-goose-conservation
#1
Anthony D Fox, Jesper Madsen
Wild geese wintering in western Europe were declining by the 1930s probably due to loss of natural habitat and over exploitation through hunting, although the causes will never be known. Refuge provision and hunting restrictions from the 1950s enabled numbers to recover. Improved monitoring systems enabled the description of progressive increases and extensions of wintering range since that time, especially amongst those goose populations that increasingly exploited agricultural landscapes. This introductory article sets the scene for the special issue on the increasing interactions and conflicts created by recent increases in the range and abundance of wild geese throughout the northern hemisphere, especially with regard to agricultural damage, but including issues associated with air flight safety, human and animal health, ecosystem effects and conflicts with other biodiversity objectives...
March 2017: Ambio
https://www.readbyqxmd.com/read/28214945/characterization-of-tunneling-nanotubes-in-wharton-s-jelly-mesenchymal-stem-cells-an-intercellular-exchange-of-components-between-neighboring-cells
#2
Viviana Sanchez, Nerina Villalba, Luciano Fiore, Carlos Luzzani, Santiago Miriuka, Alberto Boveris, Ricardo J Gelpi, Alicia Brusco, Juan José Poderoso
Intercellular communication is one of the most important events in cell population behavior. In the last decade, tunneling nanotubes (TNTs) have been recognized as a new form of long distance intercellular connection. TNT function is to allow molecular and subcellular structure exchange between neighboring cells via the transfer of molecules and organelles such as calcium ions, prions, viral and bacterial pathogens, small lysosomes and mitochondria. New findings support the concept that mesenchymal stem cells (MSCs) can affect cell microenvironment by the release of soluble factors or the transfer of cellular components to neighboring cells, in a way which significantly contributes to cell regulation and tissue repair, although the underlying mechanisms remain poorly understood...
February 18, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28214921/vitamin-d-administration-during-pregnancy-as-prevention-for-pregnancy-neonatal-and-postnatal-complications
#3
REVIEW
Carol L Wagner, Bruce W Hollis, Kalliopi Kotsa, Hana Fakhoury, Spyridon N Karras
Pregnancy represents a time of rapid bodily change, which includes physical proportions, physiology and responsibility. At this context, maternal vitamin D stores have been the objective of extensive scientific research during the last decades, focusing on their potential effects on maternal an neonatal health. A growing body of observational studies indicated that maternal hypovitaminosis D (as defined by maternal 25-hydroxyvitamin D [25(OH)D] levels <20 ng/ml or <50 nmol/l) is a significant risk factor for adverse neonatal outcomes including asthma, multiple sclerosis and other neurological disorders...
February 18, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28214916/facial-expression-an-under-utilised-tool-for-the-assessment-of-welfare-in-mammals
#4
Kris A Descovich, Jennifer Wathan, Matthew C Leach, Hannah M Buchanan-Smith, Paul Flecknell, David Farningham, Sarah-Jane Vick
Animal welfare is a key issue for industries that use or impact upon animals. The accurate identification of welfare states is particularly relevant to the field of bioscience, where the 3Rs framework encourages refinement of experimental procedures involving animal models. The assessment and improvement of welfare states in animals is reliant on reliable and valid measurement tools. Behavioural measures (activity, attention, posture and vocalisation) are frequently used because they are immediate and non-invasive, however no single indicator can yield a complete picture of the internal state of an animal...
February 8, 2017: ALTEX
https://www.readbyqxmd.com/read/28214787/sparse-and-dense-hybrid-representation-via-subspace-modeling-for-dynamic-mri
#5
Qiegen Liu, Shanshan Wang, Dong Liang
Recent theoretical results on compressed sensing and low-rank matrix recovery have inspired significant interest in joint sparse and low rank modeling of dynamic magnetic resonance imaging (dMRI). Existing approaches usually describe these two respective prior information with different formulations. In this paper, we present a novel sparse and dense hybrid representation (SDR) model which describes the sparse plus low rank properties by a unified way. More specifically, under the learned dictionary consisting of temporal basis functions, SDR models the spatial coefficients in two subspaces with Laplacian and Gaussian prior distributions, respectively...
February 5, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28214755/identification-of-a-new-tert-leucinate-class-synthetic-cannabinoid-in-powder-and-spice-like-herbal-incenses-methyl-2-1-5-fluoropentyl-indole-3-carbonyl-amino-3-3-dimethyl-butanoate-5f-mdmb-pica
#6
Martijn D P Risseeuw, Peter Blanckaert, Vera Coopman, Stijn Van Quekelberghe, Serge Van Calenbergh, Jan Cordonnier
A brown powder and different product packages of "spice-like" herbal incenses were analyzed using a systematic identification approach based on liquid chromatography with diode array detector (HPLC-PDA) and gas chromatography mass spectrometry (GC-MS) with computer based library search against spectral libraries. However, the most predominant compound in the methanolic sample solutions could not be identified. In order to elucidate the chemical structure, a more extensive analysis of the material was initiated using liquid chromatography mass spectrometry (LC-MS), electrospray high resolution mass spectrometry (ESI-HRMS) and (1)H, (13)C and (19)F nuclear magnetic resonance spectroscopy (NMR), which allowed the identification and characterization of the major compound as methyl 2-[[1-(5-fluoropentyl)indole-3-carbonyl]amino]-3,3-dimethyl-butanoate (5F-MDMB-PICA)...
February 4, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28214726/job-satisfaction-developmental-trajectories-and-health-a-life-course-perspective
#7
Jonathan Dirlam, Hui Zheng
Understanding the health consequence of job dissatisfaction becomes increasingly important because job insecurity, stress and dissatisfaction have significantly increased in the United States in the last decade. Despite the extensive work in this area, prior studies nonetheless may underestimate the harmful effect of job dissatisfaction due to the cross-sectional nature of their data and sample selection bias. This study applies a life-course approach to more comprehensively examine the relationship between job satisfaction and health...
January 24, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28214635/secondary-craniofacial-sarcomas-following-retinoblastoma-a-systematic-review
#8
REVIEW
Ryuya Yamanaka, Azusa Hayano
OBJECTIVE: We conducted the largest systematic review of individual patient data to characterize secondary craniofacial sarcomas following retinoblastoma. METHODS: We conducted a systemic search of the PubMed databases, and compiled a comprehensive literature review. Student t-tests were used to evaluate differences between variables. Kaplan-Meier analysis was used to estimate survival. Statistical significance was assessed by using a log-rank test. RESULTS: We analyzed 220 cases of secondary craniofacial sarcomas, including 112 osteosarcomas...
February 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28214559/radiation-therapy-for-invasive-breast-cancer-increases-the-risk-of-second-primary-lung-cancer-a-nationwide-population-based-cohort-analysis
#9
Yi-Jhih Huang, Tsai-Wang Huang, Fu-Huang Lin, Chi-Hsiang Chung, Chang-Huei Tsao, Wu-Chien Chien
INTRODUCTION: Although the risk factors for lung cancer are well documented, it remains unclear if previous radiation therapy (RT) to treat breast cancer (BC) increases the incidence of second primary lung cancer. We determined the overall incidence of second primary lung cancer after previous RT for all clinical stages of BC. METHODS: After analyzing the Longitudinal Health Insurance Database, 986,713 individuals were randomly enrolled from 2000 to 2010 for cohort analysis...
January 31, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28214537/biomechanical-behavior-of-endodontically-treated-premolars-using-different-preparation-designs-and-cad-cam-materials
#10
Diogo Pedrollo Lise, Annelies Van Ende, Jan De Munck, Thaís Yumi Umeda Suzuki, Luiz Clovis Cardoso Vieira, Bart Van Meerbeek
OBJECTIVES: To evaluate the effect of restoration design ('2.5-mm deep endocrown', '5-mm deep endocrown' or '5-mm deep post&crown') and CAD/CAM material type (composite or lithium disilicate glass-ceramic) on the load-to-failure of endodontically treated premolars in absence of any ferrule. METHODS: The crowns of 48 single-rooted premolars were cut and the roots were endodontically treated. Teeth were randomly divided into six groups (n=8); teeth in each group were restored using one of the two tested materials with standardized CAD/CAM fabricated endocrowns (with either 2...
February 15, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28214522/prelimbic-cortex-extracellular-signal-regulated-kinase-1-2-activation-is-required-for-memory-retrieval-of-long-term-inhibitory-avoidance
#11
Fei Luo, Jian Zheng, Xuan Sun, Wei-Ke Deng, Fang Liu, Bao-Ming Li
Neural mechanism underlying memory retrieval has been extensively studied in the hippocampus and amygdala. However, little is known about the role of medial prefrontal cortex in long-term memory retrieval. We evaluate this issue in one-trial step-through inhibitory avoidance (IA) paradigm. Our results showed that, 1) inactivation of mPFC by local infusion of GABAA-receptor agonist muscimol caused severe deficits in retrieval of 1-day and 7-day but had no effects on 2-hour inhibitory avoidance memory; 2) the protein level of phosphorylated-ERK1/2 in mPFC were significantly increased following retrieval of 1-day and 7-day IA memory, so did the numbers of phosphorylated-ERK (pERK) and phosphorylated-CREB (pCREB) labeled neurons; 3) intra-mPFC infusion of ERK kinase inhibitor PD98095 significantly reduced phosphorylated ERK1/2 levels and phosphorylated-ERK1/2 and phosphorylated-CREB labeled cells, and severely impaired retrieval of 7-day IA memory when the drugs were administrated 30 min prior to test...
February 15, 2017: Brain Research
https://www.readbyqxmd.com/read/28214512/dynamics-and-context-dependent-roles-of-dna-methylation
#12
REVIEW
Christina Ambrosi, Massimiliano Manzo, Tuncay Baubec
DNA methylation is one of the most extensively studied epigenetic marks. It is involved in transcriptional gene silencing, it plays important roles during mammalian development and its perturbation is often associated with human diseases. In mammalian genomes, DNA methylation is a prevalent modification that decorates the majority of cytosines. It is found at the promoters and enhancers of inactive genes, at repetitive elements and within transcribed gene bodies. Its presence at promoters is dynamically linked to gene activity, suggesting that it could directly influence gene expression patterns and cellular identity...
February 15, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28214495/internal-iliac-venous-aneurysm-associated-with-pelvic-venous-insufficiency
#13
Christopher O Audu, Anna E Boniakowski, Scott Robinson, Narasimham L Dasika, Thomas Wakefield, Dawn M Coleman
Aneurysmal disease of the internal iliac vein is rare, with no standard indication for or accepted modality of treatment. Here we report an instance of unilateral, primary left internal iliac venous aneurysm and associated pelvic venous insufficiency. Following extensive workup for alternative causes, the aneurysm and left gonadal vein were coil embolized with good effect.
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28214486/robotic-inferior-vena-cava-surgery
#14
Victor J Davila, Cristine S Velazco, William M Stone, Richard J Fowl, Haidar M Abdul-Muhsin, Erik P Castle, Samuel R Money
OBJECTIVE: Inferior vena cava (IVC) surgery is uncommon and has traditionally been performed through open surgical approaches. Renal cell carcinoma with IVC extension generally requires vena cavotomy and reconstruction. Open removal of malpositioned IVC filters (IVCF) is occasionally required after endovascular retrieval attempts have failed. As our experience with robotic surgery has advanced, we have applied this technology to surgery of the IVC. We reviewed our institution's experience with robotic surgical procedures involving the IVC to determine its safety and efficacy...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28214480/nonlinear-actin-deformations-lead-to-network-stiffening-yielding-and-nonuniform-stress-propagation
#15
Bekele Gurmessa, Shea Ricketts, Rae M Robertson-Anderson
We use optical tweezers microrheology and fluorescence microscopy to apply nonlinear microscale strains to entangled and cross-linked actin networks, and measure the resulting stress and actin filament deformations. We couple nonlinear stress response and relaxation to the velocities and displacements of individual fluorescent-labeled actin segments, at varying times throughout the strain and varying distances from the strain path, to determine the underlying molecular dynamics that give rise to the debated nonlinear response and stress propagation of cross-linked and entangled actin networks at the microscale...
February 15, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28214295/blood-flow-restriction-increases-metabolic-stress-but-decreases-muscle-activation-during-high-load-resistance-exercise
#16
Emerson L Teixeira, Renato Barroso, Carla Silva-Batista, Gilberto C Laurentino, Jeremy P Loenneke, Hamilton Roschel, Carlos Ugrinowitsch, Valmor Tricoli
INTRODUCTION: We investigated differences in metabolic stress (lactate) and muscle activation (electromyography) when high load exercise is compared to a condition where blood flow restriction (BFR) is applied during the exercise or during the rest interval. METHODS: Twelve participants performed high load resistance exercise with BFR during the intervals (BFR-I), during the set (BFR-S) and without BFR (HL). Each condition consisted of 3 sets of 8 repetitions with knee-extension at 70% of one-repetition-maximum...
February 18, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28214165/agenesis-of-the-corpus-callosum-and-aicardi-syndrome-a%C3%A2-neuroimaging-and-clinical-comparison
#17
T Govil-Dalela, A Kumar, R Agarwal, H T Chugani
BACKGROUND: Agenesis of the corpus callosum can occur in individuals with epilepsy, either in isolation or as part of various neurological conditions, such as Aicardi syndrome. In this study, we evaluated the clinical and neuroradiological differences between children with nonsyndromic agenesis of the corpus callosum and those with Aicardi syndrome. METHODS: We evaluated 31 children with epilepsy and agenesis of the corpus callosum (11 males, 20 females), 14 of whom had Aicardi syndrome (all females)...
January 4, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28214103/tracking-the-evolution-and-differences-between-guest-induced-phases-of-ga-mil-53-via-ultra-wideline-69-71-ga-solid-state-nmr-spectroscopy
#18
Yue Zhang, Bryan E G Lucier, Victor V Terskikh, Renlong Zheng, Yining Huang
Ga-MIL-53 is a metal-organic framework (MOF) that exhibits a "breathing effect," in which the pore size and overall MOF topology can be influenced by temperature, pressure, and host-guest interactions. The phase control afforded by this flexible framework renders Ga-MIL-53 a promising material for guest storage and sensing applications. In this work, the structure and behavior of four Ga-MIL-53 phases (as, ht, enp and lt), along with CO2 adsorbed within Ga-MIL-53 at various loading levels, has been investigated using (69/71)Ga solid-state NMR (SSNMR) experiments at 21...
January 31, 2017: Solid State Nuclear Magnetic Resonance
https://www.readbyqxmd.com/read/28213950/benchmark-performance-of-global-switching-versus-local-switching-for-trajectory-surface-hopping-molecular-dynamic-simulation-cis-trans-azobenzene-photoisomerization
#19
Ling Yue, Le Yu, Chao Xu, Yibo Lei, Yajun Liu, Chaoyuan Zhu
Newly developed global switching algorithm that does not require calculation of nonadiabatic coupling vector reduces computational cost significantly. However, there is a lack of extensive checking its accuracy for this simplest nonadiabatic molecular dynamic method in comparison with conventional Tully's fewest switches. It is very necessary to demonstrate how accurate global switching algorithm is. Extensive comparison between local and global switching on-the-fly trajectory surface hopping molecular dynamics is performed for cis-to-trans (800 sampling trajectories) and trans-to-cis (600 sampling trajectories) azobenzene photoisomerization at the OM2/MRCI level...
February 18, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28213912/diagnostic-red-flags-steroid-treated-malignant-cns-lymphoma-mimicking-autoimmune-inflammatory-demyelination
#20
Alonso Barrantes-Freer, Aylin Sophie Engel, Odir Antonio Rodríguez-Villagra, Anne Winkler, Markus Bergmann, Christian Mawrin, Tania Kuempfel, Hannah Pellkofer, Imke Metz, Annalen Bleckmann, Silvia Hernández-Durán, Sven Schippling, Elisabeth J Rushing, Stephan Frank, Markus Glatzel, Jakob Matschke, Christian Hartmann, Guido Reifenberger, Wolf Müller, Hans-Ulrich Schildhaus, Wolfgang Brück, Christine Stadelmann
The presence of inflammation and demyelination in a central nervous system (CNS) biopsy points towards a limited, yet heterogeneous group of pathologies, of which multiple sclerosis (MS) represents one of the principal considerations. Inflammatory demyelination has also been reported in patients with clinically suspected primary central nervous system lymphoma (PCNSL), especially when steroids had been administered prior to biopsy acquisition. The histopathological changes induced by corticosteroid treatment can range from mild reduction to complete disappearance of lymphoma cells...
February 18, 2017: Brain Pathology
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