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https://www.readbyqxmd.com/read/29452370/blood-cardioplegia-for-cardiac-surgery-in-acute-myocardial-infarction-rat-experiments-with-two-widely-used-solutions
#1
Andreas Boening, Lena Assling-Simon, Martina Heep, Kerstin Boengler, Bernd Niemann, Julia Schipke, Christian Mühlfeld, Philippe Grieshaber
OBJECTIVES: Blood cardioplegia (BCP) can be used in different ways to protect the heart from ischaemia-reperfusion injury during cardiac surgery. Because there could be differences between warm and cold intermittent cardioplegia with or without warm reperfusion, we investigated the influence of 2 blood cardioplegia solutions on cardiac function, metabolism and infarct size in stable and infarcted rat hearts. METHODS: The hearts of 32 male Wistar rats were excised and inserted into a blood-perfused isolated heart apparatus...
February 14, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29452329/a-frontal-sinus-osteoma-accompanied-by-an-intracranial-mucocele-and-local-hyperostosis-frontalis-interna
#2
Yang Yang, Liang Wang, Zhen Wu
Frontal sinus osteoma accompanied by intracranial mucocele and local hyperostosis frontalis interna has never been reported. A 47-year-old woman presented with a 3-month history of intermittent headache. Physical examination revealed no neurological abnormality. Contrasted MRI showed a frontal heterogeneously enhanced lesion with adjacent non-enhanced cyst. Computed tomography showed a bone-density mass, which was accompanied by local hyperostosis frontalis interna, filled the left frontal sinus and extended intracranially...
February 13, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29452296/development-and-persistence-of-suspected-neuropathic-pain-after-total-knee-arthroplasty-in-individuals-with-osteoarthritis
#3
Matthew Fitzsimmons, Eloise Carr, Linda Woodhouse, Geoff P Bostick
BACKGROUND: Despite the effectiveness of total knee arthroplasty (TKA) for osteoarthritis (OA), up to 20% will report knee pain 1-year after surgery. One possible reason is the development of neuropathic pain before or after TKA. OBJECTIVE: To longitudinally describe suspected neuropathic pain in patients pre- and post-TKA and to explore relationships between pre-TKA suspected neuropathic pain and post-TKA outcomes. DESIGN: Prospective observational study...
February 13, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29452150/cerebral-blood-flow-velocity-and-autoregulation-in-paediatric-patients-following-a-global-hypoxic-ischaemic-insult
#4
Marlina E Lovett, Tensing Maa, Melissa G Chung, Nicole F O'Brien
AIM: To describe the cerebral blood flow velocity pattern and investigate cerebral autoregulation using transcranial Doppler ultrasonography (TCD) following a global hypoxic-ischaemic (HI) event in children. METHODS: This was a prospective, observational study in a quaternary-level paediatric intensive care unit. Intubated children, newborn to 17 years admitted to the PICU following HI injury (asphyxia, drowning, cardiac arrest) were eligible for inclusion. TCD was performed daily until post-injury day 8, discharge, or death, whichever occurred earliest...
February 13, 2018: Resuscitation
https://www.readbyqxmd.com/read/29450389/unilateral-eales-disease-a-case-report
#5
Andreea Nicolcescu, Carmen Mocanu, Loredana Dinu, Andrei Olaru, Mara Ionete, Dima Alin Stefanescu
Introduction. Eales disease is an idiopathic peripheral vascular occlusive disease characterized by inflammation, ischemia, and retinal neovascularization and is hallmarked by recurrent vitreous hemorrhages and vision loss. Case report. We present a case of a 48-year-old female with recurrent floaters and decreased vision in her right eye. The onset of symptoms was in 2007 when a diagnose of retinal vasculitis was made. She had no accompanying systemic signs and symptoms and no history of ocular trauma or previous tuberculosis infection...
April 2017: Romanian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29450135/development-of-a-specific-index-to-detect-malnutrition-in-athletes-validity-in-weight-class-or-intermittent-fasted-athletes
#6
François D Desgorces, Christophe Moinard, Mounir Chennaoui, Jean-François Toussaint, Cyril Petibois, Philippe Noirez
Fasted or weight-category athletes manage their training under strict diet conditions that could impair the stress-recovery balance and result in acute or chronic fatigue. However, to date, no validated biomarker are available to quantify this phenomena. The aim of this study was to assess the validity of a specific index combining plasma albumin and weight change to detect nutrition-related risks of fatigue increase and under-performance in athletes experiencing particular nutritional conditions. An athlete's nutrition risk index (ANRI) equation, based on data from lightweight and heavyweight rowers, was developed using relationship between plasma albumin concentrations combined to weight changes with sport performance and overtraining scores and was tested by odds ratio for failure...
June 2017: Biochimie Open
https://www.readbyqxmd.com/read/29449609/kinesthetic-stimulation-for-obstructive-sleep-apnea-syndrome-an-on-off-proof-of-concept-trial
#7
Alfredo I Hernández, Diego Pérez, Delphine Feuerstein, Corinne Loiodice, Laurence Graindorge, Gustavo Guerrero, Nadège Limousin, Frédéric Gagnadoux, Yves Dauvilliers, Renaud Tamisier, Arnaud Prigent, Philippe Mabo, Amel Amblard, Lotfi Senhadji, Jean-Louis Pépin
Obstructive sleep apnea (OSA) occurs when the upper airway narrows or collapses due to the loss of upper airway muscle activation at sleep onset. This study investigated the effectiveness of triggered kinesthetic stimulation in patients with OSA. This proof-of-concept, open-label, multicenter prospective study was conducted on 24 patients with severe OSA. During a one night evaluation, kinesthetic stimulation was intermittently delivered in 30 minute periods. The duration of apneas and hypopneas during Stim on and Stim off periods were compared...
February 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29449058/-epidemiology-of-lower-extremity-artery-disease
#8
Victor Aboyans, Marie-Antoinette Sevestre, Ileana Désormais, Philippe Lacroix, Gerry Fowkes, Michael H Criqui
It is estimated that more than 200 million individuals are affected by lower extremity artery disease (LEAD) worldwide. This prevalence has increased between 2000 and 2010 by 25%, especially in low/middle income countries. In France, about one million people are affected by this condition. Almost two-thirds of patients with LEAD are asymptomatic. This explains the interest of the measurement of the ankle-brachial index (ABI), an objective and harmless diagnostic tool. An ABI≤0.90 is considered as diagnostic for LEAD...
February 12, 2018: La Presse Médicale
https://www.readbyqxmd.com/read/29448466/level-crossings-and-excess-times-due-to-a-superposition-of-uncorrelated-exponential-pulses
#9
A Theodorsen, O E Garcia
A well-known stochastic model for intermittent fluctuations in physical systems is investigated. The model is given by a superposition of uncorrelated exponential pulses, and the degree of pulse overlap is interpreted as an intermittency parameter. Expressions for excess time statistics, that is, the rate of level crossings above a given threshold and the average time spent above the threshold, are derived from the joint distribution of the process and its derivative. Limits of both high and low intermittency are investigated and compared to previously known results...
January 2018: Physical Review. E
https://www.readbyqxmd.com/read/29448456/flow-of-colloidal-suspensions-through-small-orifices
#10
R C Hidalgo, A Goñi-Arana, A Hernández-Puerta, I Pagonabarraga
In this work, we numerically study a dense colloidal suspension flowing through a small outlet driven by a pressure drop using lattice-Boltzmann methods. This system shows intermittent flow regimes that precede clogging events. Several pieces of evidence suggest that the temperature controls the dynamic state of the system when the driving force and the aperture size are fixed. When the temperature is low, the suspension's flow can be interrupted during long time periods, which can be even two orders of magnitude larger than the system's characteristic time (Stokes)...
January 2018: Physical Review. E
https://www.readbyqxmd.com/read/29448439/modeling-the-complexity-of-acoustic-emission-during-intermittent-plastic-deformation-power-laws-and-multifractal-spectra
#11
Jagadish Kumar, G Ananthakrishna
Scale-invariant power-law distributions for acoustic emission signals are ubiquitous in several plastically deforming materials. However, power-law distributions for acoustic emission energies are reported in distinctly different plastically deforming situations such as hcp and fcc single and polycrystalline samples exhibiting smooth stress-strain curves and in dilute metallic alloys exhibiting discontinuous flow. This is surprising since the underlying dislocation mechanisms in these two types of deformations are very different...
January 2018: Physical Review. E
https://www.readbyqxmd.com/read/29448390/kullback-leibler-divergence-measure-of-intermittency-application-to-turbulence
#12
Carlos Granero-Belinchón, Stéphane G Roux, Nicolas B Garnier
For generic systems exhibiting power law behaviors, and hence multiscale dependencies, we propose a simple tool to analyze multifractality and intermittency, after noticing that these concepts are directly related to the deformation of a probability density function from Gaussian at large scales to non-Gaussian at smaller scales. Our framework is based on information theory and uses Shannon entropy and Kullback-Leibler divergence. We provide an extensive application to three-dimensional fully developed turbulence, seen here as a paradigmatic complex system where intermittency was historically defined and the concepts of scale invariance and multifractality were extensively studied and benchmarked...
January 2018: Physical Review. E
https://www.readbyqxmd.com/read/29448379/time-evolution-of-intermittency-in-the-passive-slider-problem
#13
Tapas Singha, Mustansir Barma
How does a steady state with strong intermittency develop in time from an initial state which is statistically random? For passive sliders driven by various fluctuating surfaces, we show that the approach involves an indefinitely growing length scale which governs scaling properties. A simple model of sticky sliders suggests scaling forms for the time-dependent flatness and hyperflatness, both measures of intermittency and these are confirmed numerically for passive sliders driven by a Kardar-Parisi-Zhang surface...
January 2018: Physical Review. E
https://www.readbyqxmd.com/read/29447348/transcriptome-analysis-reveals-intermittent-fasting-induced-genetic-changes-in-ischemic-stroke
#14
Joonki Kim, Sung-Wook Kang, Karthik Mallilankaraman, Sang-Ha Baik, James C Lim, Priyanka Balaganapathy, David T She, Ker-Zhing Lok, David Y Fann, Uma Thambiayah, Sung-Chun Tang, Alexis M Stranahan, S Thameem Dheen, Mathias Gelderblom, Raymond C Seet, Vardan T Karamyan, Raghu Vemuganti, Christopher G Sobey, Mark P Mattson, Dong-Gyu Jo, Thiruma V Arumugam
Genetic changes due to dietary intervention in the form of either calorie restriction (CR) or intermittent fasting (IF) are not reported in detail until now. However, it is well established that both CR and IF extend the lifespan and protect against neurodegenerative diseases and stroke. The current research aims were first to describe the transcriptomic changes in brains of IF mice and, second, to determine whether IF induces extensive transcriptomic changes following ischemic stroke to protect the brain from injury...
February 13, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29446380/pulsating-aurora-from-electron-scattering-by-chorus-waves
#15
S Kasahara, Y Miyoshi, S Yokota, T Mitani, Y Kasahara, S Matsuda, A Kumamoto, A Matsuoka, Y Kazama, H U Frey, V Angelopoulos, S Kurita, K Keika, K Seki, I Shinohara
Auroral substorms, dynamic phenomena that occur in the upper atmosphere at night, are caused by global reconfiguration of the magnetosphere, which releases stored solar wind energy. These storms are characterized by auroral brightening from dusk to midnight, followed by violent motions of distinct auroral arcs that suddenly break up, and the subsequent emergence of diffuse, pulsating auroral patches at dawn. Pulsating aurorae, which are quasiperiodic, blinking patches of light tens to hundreds of kilometres across, appear at altitudes of about 100 kilometres in the high-latitude regions of both hemispheres, and multiple patches often cover the entire sky...
February 14, 2018: Nature
https://www.readbyqxmd.com/read/29446113/use-of-a-simple-inexpensive-dual-modality-phantom-as-a-learning-tool-for-magnetic-resonance-imaging-ultrasound-fusion-techniques
#16
William R Walter, Christopher J Burke, Mamadou Diallo, Ronald S Adler
We describe an easily constructed, customizable phantom for magnetic resonance imaging-ultrasound fusion imaging and demonstrate its role as a learning tool to initiate clinical use of this emerging modality. Magnetic resonance imaging-ultrasound fusion can prove unwieldy to integrate into routine practice. We demonstrate real-time fusion with single-sequence magnetic resonance imaging uploaded to the ultrasound console. Phantom training sessions allow radiologists and sonographers to practice fiducial marker selection and improve efficiency with the fusion hardware and software interfaces...
February 15, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29445535/clinical-update-on-central-hypersomnias
#17
REVIEW
Laura Pérez-Carbonell, Guy Leschziner
The central hypersomnias encompass a range of conditions causing persisting or intermittent excessive daytime sleepiness (EDS). These conditions therefore present not infrequently in general clinical sleep practice, and remain in the differential for patients presenting with sleepiness. Our understanding of the pathophysiology, diagnosis and management of these conditions has progressed significantly over recent years, and in this article we review this group of disorders, focussing in particular on recent changes in classification and diagnosis, pathophysiological advances, and novel treatment options...
January 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29445526/intermittent-hypoxia-cardiovascular-disease-and-obstructive-sleep-apnoea
#18
REVIEW
Chris D Turnbull
Obstructive sleep apnoea (OSA) is a common disorder and is associated with cardiovascular disease. Continuous positive airway pressure (CPAP), whilst reducing blood pressure, has not been shown to reduce cardiovascular events when used as a treatment solely for this purpose in patients with previous cardiovascular disease. Developing a better understanding of the mechanisms underlying cardiovascular disease in OSA is important to develop new treatments. Potential causative mechanisms for cardiovascular disease in OSA include arousal induced sympathetic activation, large intrathoracic pressure swings leading to shear stress on the heart and great vessels, and intermittent hypoxia (IH)...
January 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29445096/chronic-intermittent-hypoxia-promotes-myocardial-ischemia-related-ventricular-arrhythmias-and-sudden-cardiac-death
#19
Jessica Morand, Claire Arnaud, Jean-Louis Pepin, Diane Godin-Ribuot
We investigated the effects of intermittent hypoxia (IH), such as that encountered in severe obstructive sleep apnea (OSA) patients, on the development and severity of myocardial ischemia-related ventricular arrhythmias. Rats were exposed to 14 days of IH (30 s at 5%O 2 and 30 s at 21%O 2 , 8 h·day -1 ) or normoxia (N, similar air-air cycles) and submitted to a 30-min coronary ligature. Arterial blood pressure (BP) and ECG were recorded for power spectral analysis, ECG interval measurement and arrhythmia quantification...
February 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29444838/enzyme-polymorphism-oxygen-and-injury-a-lipidomic-analysis-of-flight-induced-oxidative-damage-in-a-sdh-polymorphic-insect
#20
Julianne E Pekny, Philip B Smith, James H Marden
When active tissues receive insufficient oxygen to meet metabolic demand, succinate accumulates and has two fundamental effects: it causes ischemia-reperfusion injury while also activating the hypoxia-inducible factor pathway (HIF). The Glanville fritillary butterfly ( Melitaea cinxia ) possesses a balanced polymorphism in Sdhd, shown previously to affect HIF pathway activation and tracheal morphology and used here to experimentally test the hypothesis that variation in succinate dehydrogenase affects oxidative injury ...
February 14, 2018: Journal of Experimental Biology
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