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https://www.readbyqxmd.com/read/28532390/comparative-genomics-of-eucalyptus-and-corymbia-reveals-low-rates-of-genome-structural-rearrangement
#1
J B Butler, R E Vaillancourt, B M Potts, D J Lee, G J King, A Baten, M Shepherd, J S Freeman
BACKGROUND: Previous studies suggest genome structure is largely conserved between Eucalyptus species. However, it is unknown if this conservation extends to more divergent eucalypt taxa. We performed comparative genomics between the eucalypt genera Eucalyptus and Corymbia. Our results will facilitate transfer of genomic information between these important taxa and provide further insights into the rate of structural change in tree genomes. RESULTS: We constructed three high density linkage maps for two Corymbia species (Corymbia citriodora subsp...
May 22, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28532175/patient-presenting-with-frontal-subperiosteal-abscess-and-headache-a-case-of-pott-s-puffy-tumour
#2
Hakan Şimşek
Chronic sinusitis can be complicated with erosion of anterior or posterior wall of the sinus; causing Pott's puffy tumour in the anterior, or epidural abscess in the posterior communication. A 65-year old man with a painful swelling in his forehead is presented. Pott's puffy tumour was diagnosed. CT, MRI, and DTI studies were obtained. Epidural or dural involvement was not present. In the first operation, anterior wall of the frontal sinus wall was opened. Osteomyelitis debridement was performed and the frontonasal duct was enlarged endoscopically...
May 22, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28527260/-ancient-disease-but-not-a-thing-of-the-past-pott-s-paraplegia-in-an-hiv-positive-health-care-worker
#3
Leonardo F Jurado
Centro de Investigación UNINAVARRA-CINA, Fundación Universitaria Navarra, Neiva, ColombiaGrupo de Investigación MICOBAC-UN, Departamento de Microbiología, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, D.C., Colombia.
April 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28526291/direct-radiocarbon-dating-and-dna-analysis-of-the-darra-i-kur-afghanistan-human-temporal-bone
#4
Katerina Douka, Viviane Slon, Chris Stringer, Richard Potts, Alexander Hübner, Matthias Meyer, Fred Spoor, Svante Pääbo, Tom Higham
The temporal bone discovered in the 1960s from the Darra-i-Kur cave in Afghanistan is often cited as one of the very few Pleistocene human fossils from Central Asia. Here we report the first direct radiocarbon date for the specimen and the genetic analyses of DNA extracted and sequenced from two areas of the bone. The new radiocarbon determination places the find to ∼4500 cal BP (∼2500 BCE) contradicting an assumed Palaeolithic age of ∼30,000 years, as originally suggested. The DNA retrieved from the specimen originates from a male individual who carried mitochondrial DNA of the modern human type...
June 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28525445/priorities-and-preferences-for-weight-management-and-cardiovascular-risk-reduction-in-primary-care
#5
Lynne S Nemeth, LaShanta J Rice, Maryellen Potts, Cathy Melvin, Melanie Jefferson, Chanita Hughes-Halbert
Implementing behavioral interventions for cardiovascular risk reduction and weight management is challenging in primary care. Primary care patients and providers were recruited for qualitative interviews to identify priorities and preferences for addressing weight management. Thematic analysis was used to identify relevant resources, barriers to lifestyle modification, health behavior change, and implementation of weight management strategies into care. Patients and providers prioritized increasing physical activity and healthy diets when managing chronic disease; and reported decreased patient motivation, knowledge, and limited organizational capacity and time among providers to deliver intensive interventions...
July 2017: Family & Community Health
https://www.readbyqxmd.com/read/28515316/dna-damage-induced-degradation-of-exo1-limits-dna-end-resection-to-ensure-accurate-dna-repair
#6
Nozomi Tomimatsu, Bipasha Mukherjee, Janelle Louise Harris, Francesca Ludovica Boffo, Molly Hardebeck, Patrick Ryan Potts, Kum Kum Khanna, Sandeep Burma
End resection of DNA double-strand breaks (DSBs) to generate 3'-single-stranded DNA facilitates DSB repair via error-free homologous recombination (HR) while stymieing repair by the error-prone non-homologous end joining (NHEJ) pathway. Activation of DNA end resection involves phosphorylation of the 5' to 3' exonuclease EXO1 by the phosphoinositide 3-kinase-like kinases ATM and ATR, and by the cyclin-dependent kinases 1 and 2. After activation, EXO1 must also be restrained in order to prevent over-resection which is known to hamper optimal HR and trigger global genomic instability...
May 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28500764/phylogeny-is-a-powerful-tool-for-predicting-plant-biomass-responses-to-nitrogen-enrichment
#7
Rachel C Wooliver, Zachary H Marion, Christopher R Peterson, Brad M Potts, John K Senior, Joseph K Bailey, Jennifer A Schweitzer
Increasing rates of anthropogenic nitrogen (N) enrichment to soils often lead to the dominance of nitrophilic plant species and reduce plant diversity in natural ecosystems. Yet, we lack a framework to predict which species will be winners or losers in soil N enrichment scenarios, a framework that current literature suggests should integrate plant phylogeny, functional trade-offs, and nutrient co-limitation. Using a controlled fertilization experiment, we quantified biomass responses to N enrichment for 23 forest tree species within the genus Eucalyptus that are native to Tasmania, Australia...
May 13, 2017: Ecology
https://www.readbyqxmd.com/read/28495655/increased-sodium-calcium-exchanger-activity-enhances-beta-adrenergic-mediated-increase-in-heart-rate-whole-heart-study-in-a-homozygous-sodium-calcium-exchanger-overexpressor-mouse-model
#8
Sven Kaese, Nils Bögeholz, Paul Pauls, Dirk Dechering, Jan Olligs, Katharina Kölker, Sascha Badawi, Gerrit Frommeyer, Christian Pott, Lars Eckardt
BACKGROUND: The cardiac Na(+)/Ca(2+)-exchanger (NCX) contributes to diastolic depolarization in cardiac pacemaker cells. Increased NCX activity has been found in heart failure and atrial fibrillation. So far, the influence of increased NCX activity on resting heart rate, beta-adrenergic mediated increase in heart rate and cardiac conduction properties is unknown. OBJECTIVE: This study therefore investigates the influence of NCX overexpression in a homozygous transgenic whole-heart mouse model (NCX-OE) on sinus and AV nodal function...
May 8, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28495379/transthoracic-echocardiography-for-diagnosing-pulmonary-embolism-a-systematic-review-and-meta-analysis
#9
J Matthew Fields, Joshua Davis, Lily Girson, Arthur Au, Jacqueline Potts, Charity J Morgan, Imelda Vetter, Lee Ann Riesenberg
OBJECTIVE: Pulmonary embolism (PE) is a common diagnosis with significant mortality if not appropriately treated. The use of transthoracic echocardiography in patients with PE is common; however, its diagnostic capabilities in this use are unclear. With the increased use of ultrasonography in medical settings, it is important to understand the strengths and limitations of echocardiography for the diagnosis of PE. METHODS: We conducted a systematic review of PubMed, CINAHL, and EMBASE through 2016 for articles assessing the diagnostic accuracy of transthoracic echocardiography for PE...
May 9, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28488295/a-global-synthesis-of-the-effects-of-diversified-farming-systems-on-arthropod-diversity-within-fields-and-across-agricultural-landscapes
#10
Elinor M Lichtenberg, Christina M Kennedy, Claire Kremen, Péter Batáry, Frank Berendse, Riccardo Bommarco, Nilsa A Bosque-Pérez, Luísa G Carvalheiro, William E Snyder, Neal M Williams, Rachael Winfree, Björn K Klatt, Sandra Åström, Faye Benjamin, Claire Brittain, Rebecca Chaplin-Kramer, Yann Clough, Bryan Danforth, Tim Diekötter, Sanford D Eigenbrode, Johan Ekroos, Elizabeth Elle, Breno M Freitas, Yuki Fukuda, Hannah R Gaines-Day, Heather Grab, Claudio Gratton, Andrea Holzschuh, Rufus Isaacs, Marco Isaia, Shalene Jha, Dennis Jonason, Vincent P Jones, Alexandra-Maria Klein, Jochen Krauss, Deborah K Letourneau, Sarina Macfadyen, Rachel E Mallinger, Emily A Martin, Eliana Martinez, Jane Memmott, Lora Morandin, Lisa Neame, Mark Otieno, Mia G Park, Lukas Pfiffner, Michael J O Pocock, Carlos Ponce, Simon G Potts, Katja Poveda, Mariangie Ramos, Jay A Rosenheim, Maj Rundlöf, Hillary Sardiñas, Manu E Saunders, Nicole L Schon, Amber R Sciligo, C Sheena Sidhu, Ingolf Steffan-Dewenter, Teja Tscharntke, Milan Veselý, Wolfgang W Weisser, Julianna K Wilson, David W Crowder
Agricultural intensification is a leading cause of global biodiversity loss, which can reduce the provisioning of ecosystem services in managed ecosystems. Organic farming and plant diversification are farm management schemes that may mitigate potential ecological harm by increasing species richness and boosting related ecosystem services to agroecosystems. What remains unclear is the extent to which farm management schemes affect biodiversity components other than species richness, and whether impacts differ across spatial scales and landscape contexts...
May 10, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28484973/investigating-the-structural-compaction-of-biomolecules-upon-transition-to-the-gas-phase-using-esi-twims-ms
#11
Paul W A Devine, Henry C Fisher, Antonio N Calabrese, Fiona Whelan, Daniel R Higazi, Jennifer R Potts, David C Lowe, Sheena E Radford, Alison E Ashcroft
Collision cross-section (CCS) measurements obtained from ion mobility spectrometry-mass spectrometry (IMS-MS) analyses often provide useful information concerning a protein's size and shape and can be complemented by modeling procedures. However, there have been some concerns about the extent to which certain proteins maintain a native-like conformation during the gas-phase analysis, especially proteins with dynamic or extended regions. Here we have measured the CCSs of a range of biomolecules including non-globular proteins and RNAs of different sequence, size, and stability...
May 8, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28472579/actual-availability-of-appointments-at-general-practices-in-regional-new-south-wales-australia
#12
Joanne Bradbury, Susan Nancarrow, Cathy Avila, Sabrina Pit, Ruth Potts, Frances Doran, Gary L Freed
BACKGROUND: There is limited data to inform policy about the availability and costs of primary healthcare at the local level. The objective of this article was to determine the appointment availability and out-of-pocket costs for patients presenting with non urgent conditions to general practices in a regional setting. METHODS: A cross-sectional, census study included all 184 general practices across 12 local government areas in northern New South Wales. Practices were telephoned in a randomised sequence on weekday mornings by a researcher...
2017: Australian Family Physician
https://www.readbyqxmd.com/read/28468871/a-disparity-between-locomotor-economy-and-territory-holding-ability-in-male-house-mice
#13
Jeremy S Morris, James S Ruff, Wayne K Potts, David R Carrier
Both economical locomotion and physical fighting are important performance traits to many species because of their direct influence on components of Darwinian fitness. Locomotion represents a substantial portion of the total daily energy budget of many animals. Fighting performance often determines individual reproductive fitness through the means of resource control, social dominance, and access to mates. However, phenotypic traits that improve either locomotor economy or fighting ability may diminish performance in the other...
May 3, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28466759/knee-ankle-foot-orthosis-with-powered-knee-for-support-in-the-elderly
#14
Peter Paul Pott, Sebastian Immanuel Wolf, Julia Block, Stefan van Drongelen, Markus Grün, Daniel Ww Heitzmann, Jürgen Hielscher, Andreas Horn, Roman Müller, Oliver Rettig, Ulrich Konigorski, Roland Werthschützky, Helmut Friedrich Schlaak, Thorsten Meiß
A prototype of a powered knee orthotic device was developed to determine whether fractional external torque and power support to the knee relieves the biomechanical loads and reduces the muscular demand for a subject performing sit-to-stand movements. With this demonstrator, consisting of the subsystems actuation, kinematics, sensors, and control, all relevant sensor data can be acquired and full control is maintained over actuator parameters. A series-elastic actuator based on a direct current motor provides up to 30 Nm torque to the knee via a hinge joint with an additional sliding degree of freedom...
May 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28466074/cystitis-cystica-as-a-large-solitary-bladder-cyst
#15
Stephanie Potts, John Calleary
Background: In this case we describe the rare and not previously documented presentation of cystitis cystica as a large solitary cystic lesion within the bladder wall. Case Presentation: We present a case of a 46-year-old Russian male with a history of lower urinary tract symptoms and suprapubic pain. CT urogram showed a 5.8 cm filling defect/cystic mass related to the base of the bladder and prostate with 8 mm thick wall. The patient underwent cystoscopy and contrast study of bladder lesion with urethral dilatation and transurethral deroofing of bladder wall cyst under general anesthesia...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28465141/a-novel-educational-outreach-approach-to-teach-hands-only-cardiopulmonary-resuscitation-to-the-public
#16
Mary P Chang, Lana M Gent, Merrilee Sweet, Jerry Potts, Jeral Ahtone, Ahamed H Idris
REVIEW: The American Heart Association set goals in 2010 to train 20 million people annually in cardiopulmonary resuscitation and to double bystander response by 2020. These ambitious goals are difficult to achieve without new approaches. METHODS: The main objective is to evaluate a new approach to cardiopulmonary resuscitation instruction using a self-instructional kiosk to teach Hands-Only CPR to people at a busy international airport. This is a prospective, observational study evaluating a new approach to teach Hands-Only CPR to the public from July 2013 to February 2016...
April 29, 2017: Resuscitation
https://www.readbyqxmd.com/read/28463330/improving-the-performance-of-interferometric-imaging-through-the-use-of-disturbance-feedforward
#17
Michael Böhm, Martin Glück, Alexander Keck, Jörg-Uwe Pott, Oliver Sawodny
In this paper, we present a disturbance compensation technique to improve the performance of interferometric imaging for extremely large ground-based telescopes, e.g., the Large Binocular Telescope (LBT), which serves as the application example in this contribution. The most significant disturbance sources at ground-based telescopes are wind-induced mechanical vibrations in the range of 8-60 Hz. Traditionally, their optical effect is eliminated by feedback systems, such as the adaptive optics control loop combined with a fringe tracking system within the interferometric instrument...
May 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/28459623/chronic-obstructive-pulmonary-disease-and-the-risk-of-stroke
#18
Ann D Morgan, Chetna Sharma, Kieran J Rothnie, James Potts, Liam Smeeth, Jennifer K Quint
RATIONALE: Chronic obstructive pulmonary disease (COPD) has been identified as a risk factor for cardiovascular diseases such as myocardial infarction. The role of COPD in cerebrovascular disease is, however, less certain. Although earlier studies have suggested that the risk for stroke is also increased in COPD, more recent investigations have generated mixed results. OBJECTIVES: The primary objective of our review was to quantify the magnitude of the association between COPD and stroke...
May 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28457188/functional-tissue-engineering-a-prevascularized-cardiac-muscle-construct-for-validating-hmscs-engraftment-potential-in-vitro
#19
Mani Thiruvanamalai Valarmathi, John W Fuseler, Jay D Potts, Jeffrey M Davis, Robert L Price
The influence of somatic stem cells in the stimulation of mammalian cardiac muscle regeneration is still in its early stages, and so far, it has been difficult to determine the efficacy of the procedures that have been employed. The outstanding question remains whether stem cells derived from the bone marrow or some other location within or outside of the heart can populate a region of myocardial damage and transform into tissue-specific differentiated progenies, and also exhibit functional synchronization...
April 29, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28450446/how-question-types-reveal-student-thinking-an-experimental-comparison-of-multiple-true-false-and-free-response-formats
#20
Joanna K Hubbard, Macy A Potts, Brian A Couch
Assessments represent an important component of undergraduate courses because they affect how students interact with course content and gauge student achievement of course objectives. To make decisions on assessment design, instructors must understand the affordances and limitations of available question formats. Here, we use a crossover experimental design to identify differences in how multiple-true-false (MTF) and free-response (FR) exam questions reveal student thinking regarding specific conceptions. We report that correct response rates correlate across the two formats but that a higher percentage of students provide correct responses for MTF questions...
2017: CBE Life Sciences Education
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