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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
https://www.readbyqxmd.com/read/28162172/-radiographic-and-clinical-assessment-of-supracondylar-humeral-fractures-resulted-from-sports-in-children
#13
Z J Liu, S N Pan, L J Zhang
Objective: To investigate the radiographic and clinical assessment for supracondylar humeral fractures resulted from sports in children. Methods: The medical records of 166 patients with displaced supracondylar humerus fractures treated in Shengjing Hospital of China Medical University from January 2015 to December 2015 were reviewed.The etiology of 56 of 166 cases was relevant to the sports.Medical records of 56 of 166 patients were reviewed, incluidng gender, the mean age of patient at the time of surgery, the mean duration of injury, radiographic assessment based on the anteroposterior (AP) and lateral radiographs of the elbow, neurologic injury, the Mayo Elbow Performance Score (MEPS) and the criteria of Flynn...
January 17, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28144984/embryonic-development-of-the-axial-column-in-the-little-skate-leucoraja-erinacea
#14
Katharine E Criswell, Michael I Coates, J Andrew Gillis
The morphological patterns and molecular mechanisms of vertebral column development are well understood in bony fishes (osteichthyans). However, vertebral column morphology in elasmobranch chondrichthyans (e.g., sharks and skates) differs from that of osteichthyans, and its development has not been extensively studied. Here, we characterize vertebral development in an elasmobranch fish, the little skate, Leucoraja erinacea, using microCT, paraffin histology, and whole-mount skeletal preparations. Vertebral development begins with the condensation of mesenchyme, first around the notochord, and subsequently around the neural tube and caudal artery and vein...
January 31, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28143870/early-detection-of-ovarian-cancer-using-the-risk-of-ovarian-cancer-algorithm-with-frequent-ca125-testing-in-women-at-increased-familial-risk-combined-results-from-two-screening-trials
#15
Steven J Skates, Mark H Greene, Saundra S Buys, Phuong L Mai, Powel H Brown, Marion Piedmonte, Gustavo C Rodriguez, John O Schorge, Mark Sherman, Mary B Daly, Thomas J Rutherford, Wendy R Brewster, David M O'Malley, Edward E Partridge, John Boggess, Charles W Drescher, Claudine Isaacs, Andrew Berchuck, Susan M Domchek, Susan A Davidson, Robert P Edwards, Steven A Elg, Katie Wakeley, Kelly-Anne Phillips, Deborah K Armstrong, Ira R Horowitz, Carol J Fabian, Joan Walker, Patrick M Sluss, William R Welch, Lori Minasian, Nora Horick, Carol H Kasten, Susan Nayfield, David S Alberts, Dianne M Finkelstein, Karen Lu
PURPOSE: Women at familial/genetic ovarian cancer risk often undergo screening despite unproven efficacy. Research suggests each woman has her own CA125 baseline; significant increases above this level may identify cancers earlier than standard 6-12 monthly CA125>35U/mL. EXPERIMENTAL DESIGN: Data from prospective Cancer Genetics Network and Gynecologic Oncology Group trials, which screened 3,692 women (13,080 woman-screening years) with a strong breast/ovarian cancer family history or BRCA1/2 mutations, were combined to assess a novel screening strategy...
January 31, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28104230/first-evidence-of-persistent-organic-contaminants-as-potential-anthropogenic-stressors-in-the-barndoor-skate-dipturus-laevis
#16
Kady Lyons, Douglas H Adams
Although exploited populations of elasmobranchs may be able to recover from fishing pressure, there is little information regarding the Barndoor Skate's ability to cope with other anthropogenic stressors such as organic contaminants (OCs). Legacy OCs were measured in liver, muscle and ova from fourteen Barndoor Skates with mature skates having significantly greater mean concentrations of OCs than immature skates, demonstrating bioaccumulation with age. Using Toxic Equivalency Factors, skates were found to have levels of PCBs that have been shown to elicit negative physiological responses in other fishes and these results highlight the need for future studies to investigate the potential impacts that bioaccumulated organic contaminants have on the recovery and conservation of this vulnerable species...
January 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28100123/relay-exchanges-in-elite-short-track-speed-skating
#17
Andrew Hext, Ben Heller, John Kelley, Simon Goodwill
In short track speed skating, the relay exchange provides an additional strategic component to races by allowing a team to change the skater involved in the pack race. Typically executed every 1½ laps, it is the belief of skaters and coaches that during this period of the race, time can be gained or lost due to the execution of the relay exchange. As such, the aim of this study was to examine the influence of the relay exchange on a team's progression through a 5000 m relay race. Using data collected from three World Cup relay events during the 2012-2013 season, the time taken to complete the straight for the scenarios with and without the relay exchange were compared at different skating speeds for the corner exit prior to the straight...
January 18, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28093310/effects-of-glucose-and-insulin-administration-on-glucose-transporter-expression-in-the-north-pacific-spiny-dogfish-squalus-suckleyi
#18
Courtney A Deck, W Gary Anderson, Patrick J Walsh
Elasmobranchs (sharks, skates, and rays) are a primarily carnivorous group of fish, consuming few carbohydrates. Further, they tend to exhibit delayed responses to glucose and insulin administration in vivo relative to mammals, leading to a presumption of glucose-intolerance. To investigate the glucoregulatory capabilities of the spiny dogfish (Squalus suckleyi), plasma glucose concentration, muscle and liver glycogen content, and glucose transporter (glut1 and 4) mRNA levels were measured following intra-arterial administration of bovine insulin (10 ng kg(-1)) or an approximate doubling of fasting plasma glucose concentration...
January 13, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28087234/interference-from-related-actions-in-spoken-word-production-behavioural-and-fmri-evidence
#19
Greig de Zubicaray, Douglas Fraser, Kori Ramajoo, Katie McMahon
Few investigations of lexical access in spoken word production have investigated the cognitive and neural mechanisms involved in action naming. These are likely to be more complex than the mechanisms involved in object naming, due to the ways in which conceptual features of action words are represented. The present study employed a blocked cyclic naming paradigm to examine whether related action contexts elicit a semantic interference effect akin to that observed with categorically related objects. Participants named pictures of intransitive actions to avoid a confound with object processing...
February 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28080120/a-goal-bias-in-action-the-boundaries-adults-perceive-in-events-align-with-sites-of-actor-intent
#20
Dani Levine, Kathy Hirsh-Pasek, Amy Pace, Roberta Michnick Golinkoff
We live in a dynamic world comprised of continuous events. Remembering our past and predicting future events, however, requires that we segment these ongoing streams of information in a consistent manner. How is this segmentation achieved? This research examines whether the boundaries adults perceive in events, such as the Olympic figure skating routine used in these studies, align with the beginnings (sources) and endings (goals) of human goal-directed actions. Study 1 showed that a group of experts, given an explicit task with unlimited time to rewatch the event, identified the same subevents as one another, but with greater agreement as to the timing of goals than sources...
January 12, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
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