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https://www.readbyqxmd.com/read/28735086/a-series-of-population-models-for-hyphantria-cunea-with-delay-and-seasonality
#1
Haixia Lu, Haitao Song, Huaiping Zhu
In this paper, we establish and study a basic stage-structured model for the population of Hyphantria cunea, a delay differentialequation model and a model incorporating the resource and seasonality. By introducing the population reproduction number R0, we show that R0 acts as a threshold parameter for the existence and stability of equilibria. The trivial equilibria of the above models are all globally asymptotically stable when R0<1; the basic model and the delay-differential model have a unique positive equilibrium respectively, and they are both locally asymptotically stable when R0>1; the model with periodic season is uniformly persistent and admits a positive periodic solution if R0>1...
July 19, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28731324/using-infrared-spectroscopy-and-multivariate-analysis-to-detect-antibiotics-resistant-escherichia-coli-bacteria
#2
Uraib Sharaha, Eladio Rodriguez-Diaz, Klaris Riesenberg, Irving J Bigio, Mahmoud Huleihel, Ahmad Salman
Bacterial pathogens are one of the primary causes of human morbidity worldwide. Historically, antibiotics have been highly effective against most bacterial pathogens; however, the increasing resistance of bacteria to a broad spectrum of commonly used antibiotics has become a global health-care problem. Early and rapid determination of bacterial susceptibility to antibiotics has become essential in many clinical settings, and, sometimes, can save lives. Currently classical procedures require at least 48 hours for determining bacterial susceptibility, which can constitute a life-threatening delay for effective treatment...
July 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28729180/symptom-and-quality-of-life-improvement-in-lux-lung-8-an-open-label-phase-iii-study-of-second-line-afatinib-versus-erlotinib-in-patients-with-advanced-squamous-cell-carcinoma-of-the-lung-after-first-line-platinum-based-chemotherapy
#3
Enriqueta Felip, Vera Hirsh, Sanjay Popat, Manuel Cobo, Andrea Fülöp, Charles Dayen, José M Trigo, Richard Gregg, Cornelius F Waller, Jean-Charles Soria, Glenwood D Goss, James Gordon, Bushi Wang, Michael Palmer, Eva Ehrnrooth, Shirish M Gadgeel
INTRODUCTION: In the phase III LUX-Lung 8 trial, afatinib significantly improved progression-free survival (PFS) and overall survival (OS) versus erlotinib in patients with squamous cell carcinoma (SCC) of the lung progressing during or after platinum-based chemotherapy. Patient-reported outcomes (PROs) and health-related quality of life (QoL) in these patients are presented. PATIENTS AND METHODS: Patients (n = 795) were randomized 1:1 to oral afatinib (40 mg/d) or erlotinib (150 mg/d)...
June 23, 2017: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28728995/a-mechanistic-model-quantifies-artemisinin-induced-parasite-growth-retardation-in-blood-stage-plasmodium-falciparum-infection
#4
Pengxing Cao, Nectarios Klonis, Sophie Zaloumis, David S Khoury, Deborah Cromer, Miles P Davenport, Leann Tilley, Julie A Simpson, James M McCaw
Falciparum malaria is a major parasitic disease causing widespread morbidity and mortality globally. Artemisinin derivatives-the most effective and widely-used antimalarials that have helped reduce the burden of malaria by 60% in some areas over the past decade-have recently been found to induce growth retardation of blood-stage Plasmodium falciparum when applied at clinically relevant concentrations. To date, no model has been designed to quantify the growth retardation effect and to predict the influence of this property on in vivo parasite killing...
July 18, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28725191/bilateral-reflex-fluctuations-during-rhythmic-movement-of-remote-limb-pairs
#5
Rinaldo A Mezzarane, Tsuyoshi Nakajima, E Paul Zehr
The modulation of spinal cord excitability during rhythmic limb movement reflects the neuronal coordination underlying actions of the arms and legs. Integration of network activity in the spinal cord can be assessed by reflex variability between the limbs, an approach so far very little studied. The present work addresses this question by eliciting Hoffmann (H-) reflexes in both limbs to assess if common drive onto bilateral pools of motoneurons influence spinal cord excitability simultaneously or with a delay between sides...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28725119/vlbi-observations-of-gnss-satellites-from-scheduling-to-analysis
#6
Lucia Plank, Andreas Hellerschmied, Jamie McCallum, Johannes Böhm, Jim Lovell
The possibility of observing satellites with the very long baseline interferometry (VLBI) technique has been discussed for several years in the geodetic community, with observations of either existing satellites of the global navigation satellite systems or of satellites dedicated to realise a space tie. Such observations were carried out using the Australian telescopes in Hobart and Ceduna which, for the first time, integrated all the necessary steps: planning the observations (automated scheduling), correlation of the data and the generation of a series of time delay observables suitable for a subsequent geodetic analysis...
2017: Journal of Geodesy
https://www.readbyqxmd.com/read/28724449/novel-promoters-and-coding-first-exons-in-dlg2-linked-to-developmental-disorders-and-intellectual-disability
#7
Claudio Reggiani, Sandra Coppens, Tayeb Sekhara, Ivan Dimov, Bruno Pichon, Nicolas Lufin, Marie-Claude Addor, Elga Fabia Belligni, Maria Cristina Digilio, Flavio Faletra, Giovanni Battista Ferrero, Marion Gerard, Bertrand Isidor, Shelagh Joss, Florence Niel-Bütschi, Maria Dolores Perrone, Florence Petit, Alessandra Renieri, Serge Romana, Alexandra Topa, Joris Robert Vermeesch, Tom Lenaerts, Georges Casimir, Marc Abramowicz, Gianluca Bontempi, Catheline Vilain, Nicolas Deconinck, Guillaume Smits
BACKGROUND: Tissue-specific integrative omics has the potential to reveal new genic elements important for developmental disorders. METHODS: Two pediatric patients with global developmental delay and intellectual disability phenotype underwent array-CGH genetic testing, both showing a partial deletion of the DLG2 gene. From independent human and murine omics datasets, we combined copy number variations, histone modifications, developmental tissue-specific regulation, and protein data to explore the molecular mechanism at play...
July 19, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28721938/practical-clues-for-diagnosing-wwox-encephalopathy
#8
Oana Tarta-Arsene, Diana Barca, Dana Craiu, Catrinel Iliescu
The WW domain-containing oxidoreductase gene is implicated in autosomal recessive disorders of the central nervous system, expressed either as spinocerebellar ataxia or as a severe form with early-infantile epileptic encephalopathy. Here, we describe the electroclinical evolution of these disorders, adding new diagnostic clues based on a case study. The patient, a boy with early-onset epilepsy, presented with profound global developmental delay, persistent hypsarrhythmia, and epileptic spasms, associated with progressive cerebral atrophy without microcephaly...
July 19, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28718955/an-electrochemiluminescent-method-for-glutamate-measurement-in-small-microdialysate-samples-in-asphyxiated-young-rats
#9
Jorge Ortega-Ibarra, Silvia López-Pérez, Alberto Morales-Villagrán
Glutamate (Glu) quantification has been performed by a combination of intracerebral microdialysis through which the samples are obtained and analyzed by high performance liquid chromatography (HPLC); its measurement requires a large expenditure of time (15-30 min per sample) and special training. Therefore, an alternative method is presented here, based on the electrochemiluminescence produced by the use of an enzymatic reactor, containing glutamate-oxidase, mixed and incubated with microdialysate from dorsal striatum (DS) and prefrontal cortex (PFC) of young rats asphyxiated during the neonatal period, under a global asphyxia model in order to test this method...
July 18, 2017: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/28717741/patient-reported-burden-of-a-neuroendocrine-tumor-net-diagnosis-results-from-the-first-global-survey-of-patients-with-nets
#10
Simron Singh, Dan Granberg, Edward Wolin, Richard Warner, Maia Sissons, Teodora Kolarova, Grace Goldstein, Marianne Pavel, Kjell Öberg, John Leyden
PURPOSE: Despite the considerable impact of neuroendocrine tumors (NETs) on patients' daily lives, the journey of the patient with a NET has rarely been documented, with published data to date being limited to small qualitative studies. NETs are heterogeneous malignancies with nonspecific symptomology, leading to extensive health care use and diagnostic delays that affect survival. A large, international patient survey was conducted to increase understanding of the experience of the patient with a NET and identify unmet needs, with the aim of improving disease awareness and care worldwide...
February 2017: Journal of Global Oncology
https://www.readbyqxmd.com/read/28713258/relationship-of-topology-multiscale-phase-synchronization-and-state-transitions-in-human-brain-networks
#11
Minkyung Kim, Seunghwan Kim, George A Mashour, UnCheol Lee
How the brain reconstitutes consciousness and cognition after a major perturbation like general anesthesia is an important question with significant neuroscientific and clinical implications. Recent empirical studies in animals and humans suggest that the recovery of consciousness after anesthesia is not random but ordered. Emergence patterns have been classified as progressive and abrupt transitions from anesthesia to consciousness, with associated differences in duration and electroencephalogram (EEG) properties...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/28712841/long-term-impact-of-subthalamic-stimulation-on-cognitive-function-in-patients-with-advanced-parkinson-s-disease
#12
M Acera, A Molano, B Tijero, G Bilbao, I Lambarri, R Villoria, J Somme, E Ruiz de Gopegui, I Gabilondo, J C Gomez-Esteban
OBJECTIVE: The aim of this study was to evaluate the effects of deep brain stimulation of the subthalamic nucleus (DBS-SN) on cognitive function in patients with Parkinson's disease (PD) 5 years after surgery. MATERIAL AND METHODS: We conducted a prospective study including 50 patients with PD who underwent DBS-SN (62.5% were men; mean age of 62.2±8.2 years; mean progression time of 14.1±6.3 years). All patients were assessed before the procedure and at one year after surgery; 40 patients were further followed up until the 5-year mark...
July 13, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28712662/enteropathogen-detection-in-children-with-diarrhoea-or-vomiting-or-both-comparing-rectal-flocked-swabs-with-stool-specimens-an-outpatient-cohort-study
#13
Stephen B Freedman, Jianling Xie, Alberto Nettel-Aguirre, Bonita Lee, Linda Chui, Xiao-Li Pang, Ran Zhuo, Brendon Parsons, James A Dickinson, Otto G Vanderkooi, Samina Ali, Lara Osterreicher, Karen Lowerison, Phillip I Tarr
BACKGROUND: Enteropathogen detection traditionally relies on diarrhoeal stool samples, but these are inconvenient to collect if they are not immediately available, leading to suboptimum return rates of samples and delayed or missed diagnostic opportunities. We sought to compare the enteropathogen yields of rectal swabs and stool specimens in children with diarrhoea or vomiting, or both. METHODS: The Alberta Provincial Pediatric EnTeric Infection TEam (APPETITE) did a study in three outpatient cohorts in Calgary and Edmonton (AB, Canada)-children enrolled in the Pediatric Emergency Research Canada emergency departments, children receiving routine vaccinations at a Calgary health clinic, and symptomatic children who met criteria for treatment at home...
July 13, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28710144/the-impact-of-the-mediterranean-diet-on-the-cognitive-functioning-of-healthy-older-adults-a-systematic-review-and-meta-analysis
#14
REVIEW
David G Loughrey, Sara Lavecchia, Sabina Brennan, Brian A Lawlor, Michelle E Kelly
Evidence from epidemiologic studies suggests a relation between the Mediterranean diet (MeDi) and cognitive function, but results are inconsistent. Prior reviews have not provided pooled data from meta-analysis of longitudinal studies and randomized controlled trials (RCTs), or they included younger adult participants. This systematic review and meta-analysis examines the impact of the MeDi on the cognitive functioning of healthy older adults. Fifteen cohort studies with 41,492 participants and 2 RCTs with 309 and 162 participants in intervention and control groups, respectively, were included...
July 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28709265/from-synchronous-to-one-time-delayed-dynamics-in-coupled-maps
#15
Celia Anteneodo, Juan Carlos González-Avella, Raúl O Vallejos
We study the completely synchronized states (CSSs) of a system of coupled logistic maps as a function of three parameters: interaction strength (ɛ), range of the interaction (α), that can vary from first neighbors to global coupling, and a parameter (β) that allows one to scan continuously from nondelayed to one-time delayed dynamics. In the α-ɛ plane we identify periodic orbits, limit cycles, and chaotic trajectories, and describe how these structures change with delay. These features can be explained by studying the bifurcation diagrams of a two-dimensional nondelayed map...
June 2017: Physical Review. E
https://www.readbyqxmd.com/read/28707371/individuals-with-sickle-cell-disease-have-a-significantly-greater-vasoconstriction-response-to-thermal-pain-than-controls-and-have-significant-vasoconstriction-in-response-to-anticipation-of-pain
#16
Maha Khaleel, Mammen Puliyel, Payal Shah, John Sunwoo, Roberta M Kato, Patjanaporn Chalacheva, Wanwara Thuptimdang, Jon Detterich, John C Wood, Jennie Tsao, Lonnie Zeltzer, Richard Sposto, Michael C K Khoo, Thomas D Coates
The painful vaso-occlusive crises (VOC) that characterize sickle cell disease (SCD) progress over hours from the asymptomatic steady-state. SCD patients report that VOC can be triggered by stress, cold exposure and pain itself. We anticipated that pain could cause neural-mediated vasoconstriction, decreasing regional blood flow and promoting entrapment of sickle cells in the microvasculature. Therefore, we measured microvascular blood flow in the fingers of both hands using plethysmography and laser-Doppler flowmetry while applying a series of painful thermal stimuli on the right forearm in 23 SCD patients and 25 controls...
July 13, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28704948/sea-ice-detection-based-on-differential-delay-doppler-maps-from-uk-techdemosat-1
#17
Yongchao Zhu, Kegen Yu, Jingui Zou, Jens Wickert
Global Navigation Satellite System (GNSS) signals can be exploited to remotely sense atmosphere and land and ocean surface to retrieve a range of geophysical parameters. This paper proposes two new methods, termed as power-summation of differential Delay-Doppler Maps (PS-D) and pixel-number of differential Delay-Doppler Maps (PN-D), to distinguish between sea ice and sea water using differential Delay-Doppler Maps (dDDMs). PS-D and PN-D make use of power-summation and pixel-number of dDDMs, respectively, to measure the degree of difference between two DDMs so as to determine the transition state (water-water, water-ice, ice-ice and ice-water) and hence ice and water are detected...
July 12, 2017: Sensors
https://www.readbyqxmd.com/read/28704310/the-influence-of-contextual-factors-on-running-performance-in-female-australian-football-match-play
#18
Georgia M Black, Tim J Gabbett, Geraldine Naughton, Michael H Cole, Rich D Johnston, Brian Dawson
Given the recent growth of the professional status among multiple female football codes, the aim of this study is to investigate the effects of contextual factors on activity profiles and pacing strategies in female Australian football players. Thirty-five female Australian football players participated in this study. Global positioning system analysis was completed over one competitive season. Matches were separated into eight 10-minute periods. Greater distances were covered during the first half irrespective of playing position (ES = 0...
July 12, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28702091/educ-dom-comparative-study-of-the-telemonitoring-of-patients-with-type-2-diabetes-versus-standard-monitoring-study-protocol-for-a-randomized-controlled-study
#19
Marie-Christine Turnin, Solène Schirr-Bonnans, Jacques Martini, Jean-Christophe Buisson, Soumia Taoui, Marie-Christine Chauchard, Nadège Costa, Benoît Lepage, Laurent Molinier, Hélène Hanaire
BACKGROUND: The global prevalence of type 2 diabetes is considerable. To avoid or delay its chronic complications, patients with type 2 diabetes should improve blood glucose management by adapting their life style. This involves changing the way in which diabetes is controlled. We believe that, thanks to technological innovations in connected health-monitoring devices, the telemonitoring of type 2 diabetes patients using therapeutic educational tools is likely to help them adapt their treatment and lifestyle habits, and therefore improve blood glucose management...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28701561/common-species-link-global-ecosystems-to-climate-change-dynamical-evidence-in-the-planktonic-fossil-record
#20
Bjarte Hannisdal, Kristian Agasøster Haaga, Trond Reitan, David Diego, Lee Hsiang Liow
Common species shape the world around us, and changes in their commonness signify large-scale shifts in ecosystem structure and function. However, our understanding of long-term ecosystem response to environmental forcing in the deep past is centred on species richness, neglecting the disproportional impact of common species. Here, we use common and widespread species of planktonic foraminifera in deep-sea sediments to track changes in observed global occupancy (proportion of sampled sites at which a species is present and observed) through the turbulent climatic history of the last 65 Myr...
July 12, 2017: Proceedings. Biological Sciences
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