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https://www.readbyqxmd.com/read/28433450/a-retrospective-cohort-study-of-concomitant-ipsilateral-extra-capsular-and-intra-capsular-fractures-of-the-proximal-femur-are-they-casual-findings-or-an-undervalued-reality
#1
Miquel Videla-Cés, José-Miguel Sales-Pérez, Joan Girós-Torres, Rubén Sánchez-Navés, Sebastián Videla
BACKGROUND: Fractures of the proximal femur constitute a major public health problem, with an annual incidence in Spain of 7.6 cases per 1000 inhabitants over 65 years of age. Hip fractures are frequent in elderly patients, related to osteoporosis and with low energy trauma, which means that they can be considered a geriatric syndrome. Simultaneous ipsilateral extra- and intra-articular hip fractures are considered as very rare are, and generally speaking, classified as extra- or intra-capsular fractures...
April 13, 2017: Injury
https://www.readbyqxmd.com/read/28421609/description-and-quantitative-analysis-of-the-dentition-of-the-southern-thorny-skate-amblyraja-doellojuradoi
#2
REVIEW
G Delpiani, M C Spath, M Deli Antoni, M Delpiani
A description of the tooth morphology of 234 jaws from the southern thorny skate Amblyraja doellojuradoi in the south-west Atlantic Ocean is given. Seven rows of teeth were selected and length and width of each tooth in these rows were measured. It was found that functional series corresponds to the third teeth and the average width and length of these teeth were compared among jaws, maturity stages, sexes and rows. Generalized linear models were used to determine the subset of measures that most contribute to explain the variability between groups...
April 19, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28393604/a-selective-morpho-phonological-deficit
#3
Victoria P Shuster, Michele Miozzo
We report on an English-speaking, aphasic individual (TB) who showed a striking dissociation in speaking with the different forms (allomorphs) that an inflection can take. Although very accurate in producing the consonantal inflections (-/s/, -/z/, -/d/, -/t/), TB consistently omitted syllabic inflections (-/əz/, -/əd/), therefore correctly saying "dogs" or "walked," but "bench" for benches or "skate" for skated. Results from control tests ruled out that TB's selective difficulties stemmed from problems in selecting the correct inflection for the syntactic context or problems related to phonological or articulatory mechanisms...
April 9, 2017: Cognitive Neuropsychology
https://www.readbyqxmd.com/read/28355976/on-ice-return-to-hockey-progression-after-anterior-cruciate-ligament-reconstruction
#4
Jacob J Capin, William Behrns, Karen Thatcher, Amelia Arundale, Angela Hutchinson Smith, Lynn Snyder-Mackler
Synopsis Limited literature exists pertaining to rehabilitation of ice hockey players seeking to return-to-sport after anterior cruciate ligament reconstruction (ACLR). The purpose of this clinical commentary is to present a criterion-based, return-to-ice hockey progression for athletes after ACLR. First, we review pertinent literature and provide previously published guidelines on general rehabilitation after ACLR. Then, we present a four-phase, on-ice skating progression with objective criteria to initiate each phase...
March 29, 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28350489/redescription-and-molecular-assessment-of-relationships-among-three-species-of-echeneibothrium-rhinebothriidea-echeneibothriidae-parasitizing-the-yellownose-skate-dipturus-chilensis-in-chile
#5
Veronica M Bueno, Janine N Caira
Much progress has recently been made towards revising the taxonomic assignments of genera originally classified in the polyphyletic "Tetraphyllidea". Many of these genera, including Echeneibothrium van Beneden, 1850, were accommodated in the order Rhinebothriidea. However, beyond this larger taxonomic action, little work has been conducted on this genus over the last 50 yrs. As a consequence, the criteria employed for characterizing species of Echeneibothrium have lagged behind those typically employed in more modern descriptions of elasmobranch-hosted cestode taxa...
March 10, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28346141/insights-into-electrosensory-organ-development-physiology-and-evolution-from-a-lateral-line-enriched-transcriptome
#6
Melinda S Modrell, Mike Lyne, Adrian R Carr, Harold H Zakon, David Buckley, Alexander S Campbell, Marcus C Davis, Gos Micklem, Clare Vh Baker
The anamniote lateral line system, comprising mechanosensory neuromasts and electrosensory ampullary organs, is a useful model for investigating the developmental and evolutionary diversification of different organs and cell types. Zebrafish neuromast development is increasingly well understood, but neither zebrafish nor Xenopus is electroreceptive and our molecular understanding of ampullary organ development is rudimentary. We have used RNA-seq to generate a lateral line-enriched gene-set from late-larval paddlefish (Polyodon spathula)...
March 27, 2017: ELife
https://www.readbyqxmd.com/read/28343270/magnetic-field-discrimination-learning-and-memory-in-the-yellow-stingray-urobatis-jamaicensis
#7
Kyle C Newton, Stephen M Kajiura
Elasmobranch fishes (sharks, skates, and rays) have been hypothesized to use the geomagnetic field as a cue for orienting and navigating across a wide range of spatial scales. Magnetoreception has been demonstrated in many invertebrate and vertebrate taxa, including elasmobranchs, but this sensory modality and the cognitive abilities of cartilaginous fishes are poorly studied. Wild caught yellow stingrays, Urobatis jamaicensis (N = 8), underwent conditioning to associate a magnetic stimulus with a food reward in order to elicit foraging behaviors...
March 25, 2017: Animal Cognition
https://www.readbyqxmd.com/read/28338378/validation-of-a-maximal-incremental-skating-test-performed-on-a-slide-board-comparison-with-treadmill-skating
#8
Tatiane Piucco, Fernando Diefenthaeler, Rogério Soares, Juan M Murias, Guillaume Y Millet
PURPOSE: the aim of this study was to investigate the criterion validity of a maximal incremental skating test performed on a slide board (SB). METHODS: Twelve sub-elite speed skaters performed a maximal skating test on a treadmill and on a SB. Gas exchange threshold (GET), respiratory compensation point (RCP) and maximal variables were determined. RESULTS: oxygen uptake (V̇O2) (31.0 ± 3.2 and 31.4 ± 4.1 mL∙min(-1)∙kg(-1)), percentage of maximal oxygen uptake (V̇O2max) (66...
March 24, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28322174/acanthocotyle-gurgesiella-n-sp-monogenea-acanthocotylidae-from-the-deep-sea-skate-gurgesiella-furvescens-rajidae-in-the-south-eastern-pacific
#9
L A Ñacari, F A Sepulveda, R Escribano, M E Oliva
Little is known about the diversity of parasites of the deep-sea fish of the world's oceans. Here, a new species of monogenean parasite of the deep-sea skate Gurgesiella furvescens is described. Specimens of parasites were obtained from the skin of two specimens of the dusky finless skate, G. furvescens (Rajidae), in the vicinity of Valparaiso (33°S, 72°W), central Chile, from midwater trawl fishing at depths of 350-450 m. Both morphological and molecular analyses were conducted to provide a full description of the new species, named Acanthocotyle gurgesiella...
March 21, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28287028/technique-analysis-in-elite-athletes-using-principal-component-analysis
#10
Øyvind Gløersen, Håvard Myklebust, Jostein Hallén, Peter Federolf
The aim of this study was to advance current movement analysis methodology to enable a technique analysis in sports facilitating (1) concurrent comparison of the techniques between several athletes; (2) identification of potentially beneficial technique modifications and (3) a visual representation of the findings for feedback to the athletes. Six elite cross-country skiers, three world cup winners and three national elite, roller ski skated using the V2 technique on a treadmill while their movement patterns were recorded using 41 reflective markers...
March 13, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28277422/neuromuscular-adaptations-to-short-term-high-intensity-interval-training-in-female-ice-hockey-players
#11
Juho-Ville Kinnunen, Harri Piitulainen, Jarmo M Piirainen
High-intensity interval training (HIIT) related neuromuscular adaptations, changes in force production and on-ice performance were investigated in female ice-hockey players during pre-season. Fourteen Finnish championship level ice hockey players (average age 22 ± 3 years) participated in 2½-week HIIT. Both spinal (H-reflex) and supraspinal (V-wave) neuromuscular responses of the soleus muscle were recorded before and after the training period. Static jump (SJ) and countermovement jump (CMJ) heights, plantar flexor maximal voluntary contraction (MVC) and rate of force development (RFD) were measured...
March 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28264823/changing-trends-in-reproductive-lifestyle-factors-in-uk-women-descriptive-study-within-the-uk-collaborative-trial-of-ovarian-cancer-screening-ukctocs
#12
Aleksandra Gentry-Maharaj, Clara Glazer, Matthew Burnell, Andy Ryan, Hannah Berry, Jatinderpal Kalsi, Robert Woolas, Steve J Skates, Stuart Campbell, Mahesh Parmar, Ian Jacobs, Usha Menon
OBJECTIVE: There has been considerable interest in the impact of reproductive factors on health but there are little data on how these have varied over time. We explore trends in reproductive/lifestyle factors of postmenopausal British women by analysing self-reported data from participants of the UK Collaborative Trial of Ovarian Cancer Screening (UKCTOCS). DESIGN: Prospective birth cohort analysis. SETTING: Population cohort invited between 2001 and 2005 from age-sex registers of 27 Primary Care Trusts in England, Wales and Northern Ireland and recruited through 13 National Health Service Trusts...
March 6, 2017: BMJ Open
https://www.readbyqxmd.com/read/28264196/molecular-basis-of-ancestral-vertebrate-electroreception
#13
Nicholas W Bellono, Duncan B Leitch, David Julius
Elasmobranch fishes, including sharks, rays, and skates, use specialized electrosensory organs called ampullae of Lorenzini to detect extremely small changes in environmental electric fields. Electrosensory cells within these ampullae can discriminate and respond to minute changes in environmental voltage gradients through an unknown mechanism. Here we show that the voltage-gated calcium channel CaV1.3 and the big conductance calcium-activated potassium (BK) channel are preferentially expressed by electrosensory cells in little skate (Leucoraja erinacea) and functionally couple to mediate electrosensory cell membrane voltage oscillations, which are important for the detection of specific, weak electrical signals...
March 16, 2017: Nature
https://www.readbyqxmd.com/read/28253043/development-of-1500m-pacing-behavior-in-junior-speed-skaters-a-longitudinal-study
#14
Rikstje Wiersma, Inge K Stoter, Chris Visscher, Florentina J Hettinga, Marije T Elferink-Gemser
PURPOSE: Providing insight in the development of pacing behavior in junior speed skaters and analyse possible differences between elite, sub-elite, and non-elite juniors. METHODS: 1500m season best times (SBT) and corresponding pacing behavior were obtained longitudinally for 104 Dutch male speed skaters at age 13-14(U15), 15-16(U17), and 17-18(U19) years. Based on their U19 SBT, skaters were divided into elite(n=17), sub-elite(n=64), and non-elite(n=23) groups...
March 2, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28253027/wingate-test-is-a-strong-predictor-of-1500m-performance-in-elite-speed-skaters
#15
Nico Hofman, Jac Orie, Marco J M Hoozemans, Carl Foster, Jos J de Koning
Wingate test scores are strongly associated with anaerobic capacity in athletes involved in speed-endurance sports. In speed skating Wingate results are known to predict performance cross-sectionally, but have not been investigated relative to their ability to predict performance longitudinally. PURPOSE: To investigate whether Wingate tests performed during summer training are predictive of 1500m speed skating performance the subsequent winter in elite speed skaters. METHODS: Wingate test results from the summer training periods and 1500m performances during the subsequent winter were analyzed over a 3-year period, in 5 female and 8 male elite (Olympic, World Championship and World Cup medalists) speed skaters...
March 2, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28242306/characteristics-of-the-brown-hagfish-paramyxine-atami-transthyretin-metal-ion-dependent-thyroid-hormone-binding
#16
Shunsuke Suzuki, Kentaro Kasai, Norihito Nishiyama, Akinori Ishihara, Kiyoshi Yamauchi
Transthyretin (TTR) is a vertebrate-specific protein involved in thyroid hormone distribution in plasma, and its gene is thought to have emerged by gene duplication from the gene for the ancient TTR-related protein, 5-hydroxyisourate hydrolase, at some early stage of chordate evolution. We investigated the molecular and hormone-binding properties of the brown hagfish Paramyxine atami TTR. The amino acid sequence deduced from the cloned hagfish TTR cDNA shared 33-50% identities with those of other vertebrate TTRs but less than 24% identities with those of vertebrate and deuterostome invertebrate 5-hydroxyisourate hydrolases...
February 24, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28240969/evidence-of-stage-shift-in-women-diagnosed-with-ovarian-cancer-during-phase-ii-of-the-united-kingdom-familial-ovarian-cancer-screening-study
#17
Adam N Rosenthal, Lindsay S M Fraser, Susan Philpott, Ranjit Manchanda, Matthew Burnell, Philip Badman, Richard Hadwin, Ivana Rizzuto, Elizabeth Benjamin, Naveena Singh, D Gareth Evans, Diana M Eccles, Andy Ryan, Robert Liston, Anne Dawnay, Jeremy Ford, Richard Gunu, James Mackay, Steven J Skates, Usha Menon, Ian J Jacobs
Purpose To establish the performance of screening with serum cancer antigen 125 (CA-125), interpreted using the risk of ovarian cancer algorithm (ROCA), and transvaginal sonography (TVS) for women at high risk of ovarian cancer (OC) or fallopian tube cancer (FTC). Patients and Methods Women whose estimated lifetime risk of OC/FTC was ≥ 10% were recruited at 42 centers in the United Kingdom and underwent ROCA screening every 4 months. TVS occurred annually if ROCA results were normal or within 2 months of an abnormal ROCA result...
February 27, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28230349/exceptional-anti-icing-performance-of-self-impregnating-slippery-surfaces
#18
Christos Stamatopoulos, Jaroslav Hemrle, Danhong Wang, Dimos Poulikakos
A heat exchange interface at subzero temperature in a water vapor environment exhibits high probability of frost formation due to freezing condensation, a factor that markedly decreases the heat transfer efficacy due to the considerable thermal resistance of ice. Here we report a novel strategy to delay ice nucleation on these types of solid-water vapor interfaces. With a process-driven mechanism, a self-generated liquid intervening layer immiscible to water is deposited on a textured superhydrophobic surface and acts as a barrier between the water vapor and the solid substrate...
March 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28207832/towards-sustainable-fishery-management-for-skates-in-south-america-the-genetic-population-structure-of-zearaja-chilensis-and-dipturus-trachyderma-chondrichthyes-rajiformes-in-the-south-east-pacific-ocean
#19
Carolina Vargas-Caro, Carlos Bustamante, Michael B Bennett, Jennifer R Ovenden
The longnose skates (Zearaja chilensis and Dipturus trachyderma) are the main component of the elasmobranch fisheries in the south-east Pacific Ocean. Both species are considered to be a single stock by the fishery management in Chile however, little is known about the level of demographic connectivity within the fishery. In this study, we used a genetic variation (560 bp of the control region of the mitochondrial genome and ten microsatellite loci) to explore population connectivity at five locations along the Chilean coast...
2017: PloS One
https://www.readbyqxmd.com/read/28190727/the-origin-of-vertebrate-gills
#20
J Andrew Gillis, Olivia R A Tidswell
Pharyngeal gills are a fundamental feature of the vertebrate body plan [1]. However, the evolutionary history of vertebrate gills has been the subject of a long-standing controversy [2-8]. It is thought that gills evolved independently in cyclostomes (jawless vertebrates-lampreys and hagfish) and gnathostomes (jawed vertebrates-cartilaginous and bony fishes), based on their distinct embryonic origins: the gills of cyclostomes derive from endoderm [9-12], while gnathostome gills were classically thought to derive from ectoderm [10, 13]...
March 6, 2017: Current Biology: CB
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