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https://www.readbyqxmd.com/read/29153821/custom-made-e-vita-graft-for-frozen-elephant-trunk-with-arch-first-technique
#1
Luca Bertoglio, Alessandro Castiglioni, Alessandro Grandi, Tommaso Cambiaghi, Alessandro Verzini, Roberto Chiesa
A novel custom-made E-Vita Open prosthesis (JOTEC GmbH, Hechingen, Germany) has been designed with 2 additional side branches. The first one, the reperfusion branch, allows distal aortic perfusion after the collar anastomosis of a frozen elephant trunk repair has been performed. The second one, the debranching branch, permits reimplantation of any configuration of supraaortic debranching to the dacron graft. This modified graft provides two main advantages: first, combined with prior carotid-subclavian bypass and bilateral axillary perfusion, it allows continuous bihemispheric antegrade perfusion and arch-first technique under mild hypothermia (32°C); second, it grants distal aortic reperfusion after distal anastomosis completion performed under moderate hypothermia (28°C)...
December 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29143705/rumination-time-and-monitoring-of-health-disorders-during-early-lactation
#2
S Paudyal, F P Maunsell, J T Richeson, C A Risco, D A Donovan, P J Pinedo
The objective was to evaluate the association between changes in daily rumination time (dRT) and early stages of disease during early lactation and to assess the performance of two proposed disease detection indices. This cohort study included 210 multiparous Holstein cows at the University of Florida Dairy Unit. Cows were affixed with a neck collar containing rumination loggers providing rumination time. The occurrence of health disorders (mastitis, metritis, clinical hypocalcemia, depression/dehydration/fever (DDF), digestive conditions, lameness and clinical ketosis) was assessed until 60 days in milk...
November 16, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29123212/influence-of-precipitation-and-crop-germination-on-resource-selection-by-mule-deer-odocoileus-hemionus-in-southwest-colorado
#3
Emily M Carrollo, Heather E Johnson, Justin W Fischer, Matthew Hammond, Patricia D Dorsey, Charles Anderson, Kurt C Vercauteren, W David Walter
Mule deer (Odocoileus hemionus) populations in the western United States provide many benefits to local economies but can also cause considerable damage to agriculture, particularly damage to lucrative crops. Limited information exists to understand resource selection of mule deer in response to annual variation in crop rotation and climatic conditions. We tested the hypothesis that mule deer select certain crops, and in particular sunflower, based on annual climatic variability. Our objective was to use movements, estimates of home range, and resource selection analysis to identify resources selected by mule deer...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29118454/production-and-purification-of-filovirus-glycoproteins-in-insect-and-mammalian-cell-lines
#4
Elizabeth C Clarke, Amanda L Collar, Chunyan Ye, Yíngyún Caì, Eduardo Anaya, Derek Rinaldi, Britney Martinez, Sarah Yarborough, Christine Merle, Manfred Theisen, Jiro Wada, Jens H Kuhn, Steven B Bradfute
Filoviruses are highly virulent pathogens capable of causing severe disease. The glycoproteins of filoviruses are the only virally expressed proteins on the virion surface and are required for receptor binding. As such, they are the main candidate vaccine antigen. Despite their virulence, most filoviruses are not comprehensively characterized, and relatively few commercially produced reagents are available for their study. Here, we describe two methods for production and purification of filovirus glycoproteins in insect and mammalian cell lines...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29118405/extreme-behavioural-shifts-by-baboons-exploiting-risky-resource-rich-human-modified-environments
#5
Gaelle Fehlmann, M Justin O'Riain, Catherine Kerr-Smith, Stephen Hailes, Adrian Luckman, Emily L C Shepard, Andrew J King
A range of species exploit anthropogenic food resources in behaviour known as 'raiding'. Such behavioural flexibility is considered a central component of a species' ability to cope with human-induced environmental changes. Here, we study the behavioural processes by which raiding male chacma baboons (Papio ursinus) exploit the opportunities and mitigate the risks presented by raiding in the suburbs of Cape Town, South Africa. Ecological sampling and interviews conducted with 'rangers' (employed to manage the baboons' space use) revealed that baboons are at risk of being herded out of urban spaces that contain high-energy anthropogenic food sources...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29116008/evaluation-of-an-open-source-method-for-calculating-physical-activity-in-dogs-from-harness-and-collar-based-sensors
#6
C Westgarth, C Ladha
BACKGROUND: The ability to make objective measurements of physical activity in dogs has both clinical and research applications. Accelerometers offer a non-intrusive and convenient solution. Of the commercialy available sensors, measurements are commonly given in manufacturer bespoke units and calculated with closed source approaches. Furthermore, the validation studies that exist for such devices are mounting location dependant, not transferable between brands or not suitable for handling modern raw accelerometry type data...
November 7, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29105758/why-are-tropical-mountain-passes-low-for-some-species-genetic-and-stable-isotope-tests-for-differentiation-migration-and-expansion-in-elevational-generalist-songbirds
#7
Chauncey R Gadek, Seth D Newsome, Elizabeth J Beckman, Andrea N Chavez, Spencer C Galen, Emil Bautista, Christopher C Witt
1.Most tropical bird species have narrow elevational ranges, likely reflecting climatic specialization. This is consistent with Janzen's Rule, the tendency for mountain passes to be effectively 'higher' in the tropics. Hence, those few tropical species that occur across broad elevational gradients (elevational generalists) represent a contradiction to Janzen's Rule. 2.Here we aim to address the following questions. Are elevational generalists being sundered by diversifying selection along the gradient? Does elevational movement cause these species to resist diversification or specialization? Have they recently expanded, suggesting that elevational generalism is short-lived in geological time? 3...
November 6, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/29103269/echinostoma-macrorchis-digenea-echinostomatidae-metacercariae-in-cipangopaludina-chinensis-malleata-snails-and-adults-from-experimental-rats-in-korea
#8
Woon-Mok Sohn, Byoung-Kuk Na
A survey was performed to know the infection status of echinostome metacercariae in Cipangopaludina chinensis malleata snails from Korea. Total 75 snails collected in 5 localities, i.e., Imsil-gun, Jeollabuk-do, Hwasun-gun and Shinan-gun (Aphae and Jido), Jeollanam-do, and Jinju-si, Gyeongsangnam-do, were examined for metacercariae by the artificial digestion method. Infection rates of metacercariae were 80.0%, 66.7%, 100%, 60.0%, and 73.3%, and their densities were 39, 32, 183, 19, and 30 per snail infected, respectively...
October 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29096975/plastic-debris-collars-an-underreported-stressor-in-tropical-reef-fishes
#9
Joséde Anchieta C C Nunes, Cláudio L S Sampaio, Francisco Barros, Antoine O H C Leduc
Plastic debris collar wrappings (PDCW) are involved in the frequent entanglement of several groups of marine animals. In fishes, however aside from 'ghost fishing', PDCW events are rarely documented, and no record of this occurrence exists in tropical reef fishes. Here, we present records for four species afflicted by plastic debris collars. Observations occurred during snorkeling, and included the silver mojarra Eucinostomus argenteus, Atlantic thread herring Ophistonema oglinum, tomtate grunt Haemulon aurolineatum and gray parrotfish Sparisoma axillare...
October 30, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29091964/interaction-between-the-flagellar-pocket-collar-and-the-hook-complex-via-a-novel-microtubule-binding-protein-in-trypanosoma-brucei
#10
Anna Albisetti, Célia Florimond, Nicolas Landrein, Keni Vidilaseris, Marie Eggenspieler, Johannes Lesigang, Gang Dong, Derrick Roy Robinson, Mélanie Bonhivers
Trypanosoma brucei belongs to a group of unicellular, flagellated parasites that are responsible for human African trypanosomiasis. An essential aspect of parasite pathogenicity is cytoskeleton remodelling, which occurs during the life cycle of the parasite and is accompanied by major changes in morphology and organelle positioning. The flagellum originates from the basal bodies and exits the cell body through the flagellar pocket (FP) but remains attached to the cell body via the flagellum attachment zone (FAZ)...
November 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29091117/comparing-the-egg-ultrastructure-of-three-psorophora-ferox-diptera-culicidae-populations
#11
C F Mello, J R Santos-Mallet, A Tátila-Ferreira, J Alencar
Characterising the external morphology of mosquito eggs is important, since it facilitates the identification of material from breeding sites and contributes to the understanding of species biology and group systematics. Therefore, was to compare eggs from different Psorophora ferox populations using scanning electron microscopy (SEM). Eggs were obtained from adult female of Ps. ferox collected in the Poços das Antas Biological Reserve (Reserva Biológica de Poços das Antas, Rio de Janeiro, Brazil). From each female, one portion of eggs (n = 5) was reared for identification purposes, and the second portion (n = 10) was examined using SEM for morphometric analysis...
October 30, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/29062053/spontaneous-circadian-rhythms-in-a-cold-adapted-natural-isolate-of-aureobasidium-pullulans
#12
Diana L Franco, Paulo Canessa, Nicolás Bellora, Sebastián Risau-Gusman, Consuelo Olivares-Yañez, Rodrigo Pérez-Lara, Diego Libkind, Luis F Larrondo, Luciano Marpegan
Circadian systems enable organisms to synchronize their physiology to daily and seasonal environmental changes relying on endogenous pacemakers that oscillate with a period close to 24 h even in the absence of external timing cues. The oscillations are achieved by intracellular transcriptional/translational feedback loops thoroughly characterized for many organisms, but still little is known about the presence and characteristics of circadian clocks in fungi other than Neurospora crassa. We sought to characterize the circadian system of a natural isolate of Aureobasidium pullulans, a cold-adapted yeast bearing great biotechnological potential...
October 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29026980/evolution-of-the-androgen-induced-male-phenotype
#13
REVIEW
Matthew J Fuxjager, Meredith C Miles, Barney A Schlinger
The masculine reproductive phenotype varies significantly across vertebrates. As a result, biologists have long recognized that many of the mechanisms that support these phenotypes-particularly the androgenic system-is evolutionarily labile, and thus susceptible to the effects of selection for different traits. However, exactly how androgenic signaling systems vary in a way which results in dramatically different functional outputs, remain largely unclear. We explore this topic here by outlining four key-but non-mutually exclusive-hypotheses that propose how the mechanisms of androgenic signaling might change over time to potentiate the emergence of phenotypical variation in masculine behavior and physiology...
October 12, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28951207/cap-n-collar-transcription-factor-regulates-multiple-genes-coding-for-proteins-involved-in-insecticide-detoxification-in-the-red-flour-beetle-tribolium-castaneum
#14
Megha Kalsi, Subba Reddy Palli
In invertebrates, a heterodimer of xenobiotic transcription factors, cap n collar C isoform (CncC) and muscle aponeurosis fibromatosis (Maf) mediate cellular defense. In insects, these proteins regulate expression of genes involved in insecticide detoxification. In the current study, we performed sequencing of cDNA copied from RNA isolated from Tribolium castaneum pyrethroid resistant strain (QTC279) beetles injected with CncC or green fluorescence protein (GFP, control) dsRNA. Differential expression analysis of sequences identified 662 genes that showed a decrease and 91 genes that showed an increase in expression (p value ≤ 0...
November 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28941587/clinical-studies-in-restorative-dentistry-new-directions-and-new-demands
#15
REVIEW
N J M Opdam, K Collares, R Hickel, S C Bayne, B A Loomans, M S Cenci, C D Lynch, M B Correa, F Demarco, F Schwendicke, N H F Wilson
Clinical research of restorative materials is confounded by problems of study designs, length of trials, type of information collected, and costs for trials, despite increasing numbers and considerable development of trials during the past 50 years. This opinion paper aims to discuss advantages and disadvantages of different study designs and outcomes for evaluating survival of dental restorations and to make recommendations for future study designs. Advantages and disadvantages of randomized trials, prospective and retrospective longitudinal studies, practice-based, pragmatic and cohort studies are addressed and discussed...
September 20, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28938418/androgens-support-male-acrobatic-courtship-behavior-by-enhancing-muscle-speed-and-easing-the-severity-of-its-tradeoff-with-force
#16
Matthew J Fuxjager, Meredith C Miles, Franz Goller, John Petersen, Julia Yancey
Steroid hormone action in the brain regulates many animals' elaborate social displays used for courtship and competition, but it is increasingly recognized that the periphery may also be a site for potent steroidal modulation of complex behavior. However, the mechanisms of such "bottom-up" regulation of behavioral outflow are largely unclear. To study this problem, we examined how androgenic sex hormones act through the skeletal muscular system to mediate elaborate courtship acrobatics in a tropical bird called the golden-collared manakin...
November 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28919865/coping-with-salt-water-habitats-metabolic-and-oxidative-responses-to-salt-intake-in-the-rufous-collared-sparrow
#17
Pablo Sabat, Cristóbal Narváez, Isaac Peña-Villalobos, Carolina Contreras, Karin Maldonado, Juan C Sanchez-Hernandez, Seth D Newsome, Roberto Nespolo, Francisco Bozinovic
Many physiological adjustments occur in response to salt intake in several marine taxa, which manifest at different scales from changes in the concentration of individual molecules to physical traits of whole organisms. Little is known about the influence of salinity on the distribution, physiological performance, and ecology of passerines; specifically, the impact of drinking water salinity on the oxidative status of birds has been largely ignored. In this study, we evaluated whether experimental variations in the salt intake of a widely-distributed passerine (Zontotrichia capensis) could generate differences in basal (BMR) and maximum metabolic rates (Msum), as well as affect metabolic enzyme activity and oxidative status...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28918636/soluble-protein-and-amino-acid-content-affects-the-foam-quality-of-sparkling-wine
#18
Bruna C Condé, Eloïse Bouchard, Julie A Culbert, Kerry L Wilkinson, Sigfredo Fuentes, Kate S Howell
Proteins and amino acids are known to influence the foam characteristics of sparkling wines. However, it is unclear to what extent they promote foam formation and/or stability. This study aimed to investigate the effect of protein content and amino acid composition, measured via the bicinchoninic acid assay and high-performance liquid chromatography, respectively, on the foaming properties of 28 sparkling white wines, made by different production methods. Foam volume and stability were determined using a robotic pourer and computer vision algorithms...
October 4, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28904435/employment-status-of-patients-receiving-maintenance-dialysis-peritoneal-and-hemodialysis-a-cross-sectional-study
#19
B S Lakshmi, A C V Kumar, H K Reddy, J Gopal, V Chaitanya, V S Chandra, P Sandeep, R D Nagaraju, R Ram, V S Kumar
The long-term dialysis therapy for end-stage renal disease takes a heavy toll of quality of life of the patient. Several factors such as fatigue and decreased physical capability, impaired social and mental functioning, contribute to this forlorn state. To meld maintenance dialysis treatment with a regular employment can be a serious test. A cross-sectional study of employment of patients on hemodialysis and peritoneal dialysis in a state government tertiary institute in South India was performed between June 2015 and December 2015...
September 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28892192/estimating-activity-of-japanese-macaques-macaca-fuscata-using-accelerometers
#20
John C M Sha, Akihisa Kaneko, Naoko Suda-Hashimoto, Tianmeng He, Makiko Take, Peng Zhang, Goro Hanya
Accelerometers have been used to study both terrestrial and aquatic wildlife, mainly for mammal and bird species. In terrestrial mammals, there is a bias toward ungulates and carnivores, with fewer studies on nonhuman primates. In this study, we tested the use of accelerometers for studying the activity of Japanese macaques (Macaca fuscata). We modeled the activity of a male and a female subject by matching continuous focal observations from video recordings to sensor parameters derived from collar-mounted accelerometers...
October 2017: American Journal of Primatology
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