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Alon, Uri

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https://www.readbyqxmd.com/read/28228207/complications-and-mortality-associated-with-temporary-abdominal-closure-techniques-a-systematic-review-and-meta-analysis
#1
Adam Cristaudo, Scott Jennings, Ronny Gunnarsson, Alan DeCosta
Temporary abdominal closure (TAC) techniques are routinely used in the open abdomen. Ideally, they should prevent evisceration, aid in removal of unwanted fluid from the peritoneal cavity, facilitate in achieving safe definitive fascial closure, as well as prevent the development of intra-abdominal complications. TAC techniques used in the open abdomen were compared with negative pressure wound therapy (NPWT) to identify which was superior. A systematic review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines involving Medline, Excerpta Medica, Cochrane Central Register of Controlled Trials, Cumulative Index to Nursing and Allied Health Literature, and <ext-link ext-link-type="uri" xlink:href="http://Clinicaltrials...
February 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28213047/the-effect-of-combined-aspirin-and-clopidogrel-treatment-on-cancer-incidence
#2
Avi Leader, Ravit Zelikson-Saporta, David Pereg, Galia Spectre, Uri Rozovski, Pia Raanani, Doron Hermoni, Michael Lishner
BACKGROUND: Multiple studies have shown an association between aspirin treatment and a reduction in newly diagnosed cancer. Conversely, there are conflicting clinical and laboratory data regarding the effect of combined clopidogrel and aspirin therapy on cancer incidence, including analyses suggesting an increased cancer risk. No large scale cohort study has been performed to address this issue in a heterogeneous real-world scenario. We investigated the effect of clopidogrel and aspirin on cancer incidence compared to aspirin alone and no antiplatelet therapy...
February 14, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28166501/using-a-sniff-controller-to-self-trigger-abdominal-functional-electrical-stimulation-for-assisted-coughing-following-cervical-spinal-cord-lesions
#3
Lior Haviv, Hagit Friedman, Uri Bierman, Itzhak Glass, Anton Plotkin, Aharon Weissbrod, Sagit Shushan, Vadim Bluvshtein, Elena Aidinoff, Noam Sobel, Amiram Catz
Individuals with cervical spinal cord lesions (SCL) typically depend on caregivers to manually assist in coughing by pressing against their abdominal wall. Coughing can also be assisted by functional electric stimulation (FES) applied to abdominal muscles via surface electrodes. Efficacy of FES, however, depends on precise temporal synchronization. The sniff-controller is a trigger that enables paralyzed individuals to precisely control external devices through alterations in nasal airflow. We hypothesized that FES self-triggering by sniffcontroller may allow for effective cough timing...
January 31, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28145874/comparative-matched-outcome-of-evolut-r-vs-corevalve-transcatheter-aortic-valve-implantation
#4
Uri Landes, Tamir Bental, Alon Barsheshet, Abid Assali, Hana Vaknin Assa, Amos Levi, Katia Orvin, Ran Kornowski
OBJECTIVES: The Evolut-R (Medtronic, Inc) is a transcatheter aortic valve implantation (TAVI) system that was built on the well-established foundation of Medtronic's CoreValve device platform. Although already in extensive clinical utilization, it is unknown if the Evolut-R improves TAVI outcomes. Herein, we compared TAVI outcomes of the Evolut-R and CoreValve devices. METHODS: A propensity score 1:1 matching was conducted on 358 Evolut-R patients (n = 75) and CoreValve patients (n = 283)...
February 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28141861/a-reduced-dimensionality-approach-to-uncovering-dyadic-modes-of-body-motion-in-conversations
#5
Guy Gaziv, Lior Noy, Yuvalal Liron, Uri Alon
Face-to-face conversations are central to human communication and a fascinating example of joint action. Beyond verbal content, one of the primary ways in which information is conveyed in conversations is body language. Body motion in natural conversations has been difficult to study precisely due to the large number of coordinates at play. There is need for fresh approaches to analyze and understand the data, in order to ask whether dyads show basic building blocks of coupled motion. Here we present a method for analyzing body motion during joint action using depth-sensing cameras, and use it to analyze a sample of scientific conversations...
2017: PloS One
https://www.readbyqxmd.com/read/28102224/optimality-and-sub-optimality-in-a-bacterial-growth-law
#6
Benjamin D Towbin, Yael Korem, Anat Bren, Shany Doron, Rotem Sorek, Uri Alon
Organisms adjust their gene expression to improve fitness in diverse environments. But finding the optimal expression in each environment presents a challenge. We ask how good cells are at finding such optima by studying the control of carbon catabolism genes in Escherichia coli. Bacteria show a growth law: growth rate on different carbon sources declines linearly with the steady-state expression of carbon catabolic genes. We experimentally modulate gene expression to ask if this growth law always maximizes growth rate, as has been suggested by theory...
January 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28089543/optimal-regulatory-circuit-topologies-for-fold-change-detection
#7
Miri Adler, Pablo Szekely, Avi Mayo, Uri Alon
Evolution repeatedly converges on only a few regulatory circuit designs that achieve a given function. This simplicity helps us understand biological networks. However, why so few circuits are rediscovered by evolution is unclear. We address this question for the case of fold-change detection (FCD): a response to relative changes of input rather than absolute changes. Two types of FCD circuits recur in biological systems-the incoherent feedforward and non-linear integral-feedback loops. We performed an analytical screen of all three-node circuits in a class comprising ∼500,000 topologies...
February 22, 2017: Cell Systems
https://www.readbyqxmd.com/read/27931302/new-insights-into-treatment-of-children-with-exercise-induced-asthma-symptoms
#8
Iwona Stelmach, Anna Sztafiska, Joanna Jerzyska, Daniela Podlecka, Pawe Majak, Wodzimierz Stelmach
BACKGROUND: Exercise is one of the most common triggers of bronchoconstriction and affects up to 80% of children with asthma. OBJECTIVE: The purpose of this randomized, double-blind, placebo-controlled study was to assess the effectiveness of treatment with ciclesonide 160 microgram, either alone, with a higher dose, with a leukotriene receptor antagonist (LTRA), or with a long-acting beta-agonist (LABA) in children with asthma with postexercise-induced symptoms...
November 2016: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/27912791/possible-failure-of-novel-direct-acting-oral-anticoagulants-in-management-of-pulmonary-embolism-a-case-report
#9
James Rankin, Menachem Nagar, Jonathan Crosby, Nojan Toomari, Richard Pietras, Uri M Ben-Zur
BACKGROUND: The relative effectiveness of vitamin K antagonists compared with novel oral anticoagulants in treating pulmonary embolism remains unclear. Recent trials comparing the efficacy of vitamin K antagonists with factor Xa inhibitors for the treatment of pulmonary emboli have been non-inferiority studies based primarily on risk reduction (such as bleeding events), rather than resolution of specific diseases such as pulmonary embolism. Consequently, there is a lack of evidence indicating which of these agents are more effective...
December 3, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27907133/phosphorous-nutritional-level-carbohydrate-reserves-and-flower-quality-in-olives
#10
Ran Erel, Uri Yermiyahu, Hagai Yasuor, Dan Cohen Chamus, Amnon Schwartz, Alon Ben-Gal, Arnon Dag
The olive tree is generally characterized by relatively low final fruit set consequential to a significant rate of undeveloped pistils, pistil abortion, and flower and fruitlet abscission. These processes are acknowledged to be governed by competition for resources between the developing vegetative and reproductive organs. To study the role of phosphorus (P) nutritional level on reproductive development, trees were grown under four levels of P for three years in large containers. Phosphorus nutritional level was positively related to rate of reproductive bud break, inflorescence weight, rate of hermaphrodite flowers, pistil weight, fruitlet persistence, fruit set and the consequential total number of fruits...
2016: PloS One
https://www.readbyqxmd.com/read/27875241/dynamical-compensation-in-physiological-circuits
#11
Omer Karin, Avital Swisa, Benjamin Glaser, Yuval Dor, Uri Alon
Biological systems can maintain constant steady-state output despite variation in biochemical parameters, a property known as exact adaptation. Exact adaptation is achieved using integral feedback, an engineering strategy that ensures that the output of a system robustly tracks its desired value. However, it is unclear how physiological circuits also keep their output dynamics precise-including the amplitude and response time to a changing input. Such robustness is crucial for endocrine and neuronal homeostatic circuits because they need to provide a precise dynamic response in the face of wide variation in the physiological parameters of their target tissues; how such circuits compensate their dynamics for unavoidable natural fluctuations in parameters is unknown...
November 8, 2016: Molecular Systems Biology
https://www.readbyqxmd.com/read/27783882/temporal-trends-in-transcatheter-aortic-valve-implantation-2008-2014-patient-characteristics-procedural-issues-and-clinical-outcome
#12
Uri Landes, Alon Barsheshet, Ariel Finkelstein, Victor Guetta, Abid Assali, Amir Halkin, Hanna Vaknin-Assa, Amit Segev, Tamir Bental, Jeremy Ben-Shoshan, Israel M Barbash, Ran Kornowski
BACKGROUND: About a decade past the first transcatheter aortic valve implantation (TAVI), data are limited regarding temporal trends accompanying its evolution from novel technology to mainstream therapy. We evaluated these trends in a large multicenter TAVI registry. HYPOTHESIS: TAVI is changing and improving with time. METHODS: Patients who underwent TAVI between January 2008 and December 2014 at 3 high-volume Israeli centers were divided into 5 time quintiles according to procedure date...
October 26, 2016: Clinical Cardiology
https://www.readbyqxmd.com/read/27741268/static-posturography-and-falls-according-to-pyramidal-sensory-and-cerebellar-functional-systems-in-people-with-multiple-sclerosis
#13
Alon Kalron, Uri Givon, Lior Frid, Mark Dolev, Anat Achiron
Balance impairment is common in people with multiple sclerosis (PwMS) and frequently impacts quality of life by decreasing mobility and increasing the risk of falling. However, there are only scarce data examining the contribution of specific neurological functional systems on balance measures in MS. Therefore, the primary aim of our study was to examine the differences in posturography parameters and fall incidence according to the pyramidal, cerebellar and sensory systems functional systems in PwMS. The study included 342 PwMS, 211 women and mean disease duration of 8...
2016: PloS One
https://www.readbyqxmd.com/read/27711185/exit-from-synchrony-in-joint-improvised-motion
#14
Assi Dahan, Lior Noy, Yuval Hart, Avi Mayo, Uri Alon
Motion synchrony correlates with effective and well-rated human interaction. However, people do not remain locked in synchrony; Instead, they repeatedly enter and exit synchrony. In many important interactions, such as therapy, marriage and parent-infant communication, it is the ability to exit and then re-enter synchrony that is thought to build strong relationship. The phenomenon of entry into zero-phase synchrony is well-studied experimentally and in terms of mathematical modeling. In contrast, exit-from-synchrony is under-studied...
2016: PloS One
https://www.readbyqxmd.com/read/27649169/spider-silk-cbd-cellulose-nanocrystal-composites-mechanism-of-assembly
#15
Sigal Meirovitch, Zvi Shtein, Tal Ben-Shalom, Shaul Lapidot, Carmen Tamburu, Xiao Hu, Jonathan A Kluge, Uri Raviv, David L Kaplan, Oded Shoseyov
The fabrication of cellulose-spider silk bio-nanocomposites comprised of cellulose nanocrystals (CNCs) and recombinant spider silk protein fused to a cellulose binding domain (CBD) is described. Silk-CBD successfully binds cellulose, and unlike recombinant silk alone, silk-CBD self-assembles into microfibrils even in the absence of CNCs. Silk-CBD-CNC composite sponges and films show changes in internal structure and CNC alignment related to the addition of silk-CBD. The silk-CBD sponges exhibit improved thermal and structural characteristics in comparison to control recombinant spider silk sponges...
September 18, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27602002/automated-video-analysis-of-non-verbal-communication-in-a-medical-setting
#16
Yuval Hart, Efrat Czerniak, Orit Karnieli-Miller, Avraham E Mayo, Amitai Ziv, Anat Biegon, Atay Citron, Uri Alon
Non-verbal communication plays a significant role in establishing good rapport between physicians and patients and may influence aspects of patient health outcomes. It is therefore important to analyze non-verbal communication in medical settings. Current approaches to measure non-verbal interactions in medicine employ coding by human raters. Such tools are labor intensive and hence limit the scale of possible studies. Here, we present an automated video analysis tool for non-verbal interactions in a medical setting...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27573663/phase-ii-weekly-vinblastine-for-chemotherapy-na%C3%A3-ve-children-with-progressive-low-grade-glioma-a-canadian-pediatric-brain-tumor-consortium-study
#17
Alvaro Lassaletta, Katrin Scheinemann, Shayna M Zelcer, Juliette Hukin, Beverley A Wilson, Nada Jabado, Anne Sophie Carret, Lucie Lafay-Cousin, Valerie Larouche, Cynthia E Hawkins, Gregory Russell Pond, Ken Poskitt, Daniel Keene, Donna L Johnston, David D Eisenstat, Rahul Krishnatry, Matthew Mistry, Anthony Arnoldo, Vijay Ramaswamy, Annie Huang, Ute Bartels, Uri Tabori, Eric Bouffet
PURPOSE: Vinblastine monotherapy has shown promising activity and a low-toxicity profile in patients with pediatric low-grade glioma (PLGG) who experienced treatment failure after initial treatment with chemotherapy and/or radiation. The aim of this study was to assess the activity of vinblastine in therapy-naïve children. PATIENTS AND METHODS: Patients < 18 years old with unresectable and/or progressive therapy-naïve PLGG were eligible. Vinblastine was administered once per week at a dose of 6 mg/m(2) intravenously over a period of 70 weeks...
August 29, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/27562164/prediction-of-multidimensional-drug-dose-responses-based-on-measurements-of-drug-pairs
#18
Anat Zimmer, Itay Katzir, Erez Dekel, Avraham E Mayo, Uri Alon
Finding potent multidrug combinations against cancer and infections is a pressing therapeutic challenge; however, screening all combinations is difficult because the number of experiments grows exponentially with the number of drugs and doses. To address this, we present a mathematical model that predicts the effects of three or more antibiotics or anticancer drugs at all doses based only on measurements of drug pairs at a few doses, without need for mechanistic information. The model provides accurate predictions on available data for antibiotic combinations, and on experiments presented here on the response matrix of three cancer drugs at eight doses per drug...
September 13, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27545349/massively-parallel-interrogation-of-the-effects-of-gene-expression-levels-on-fitness
#19
Leeat Keren, Jean Hausser, Maya Lotan-Pompan, Ilya Vainberg Slutskin, Hadas Alisar, Sivan Kaminski, Adina Weinberger, Uri Alon, Ron Milo, Eran Segal
Data of gene expression levels across individuals, cell types, and disease states is expanding, yet our understanding of how expression levels impact phenotype is limited. Here, we present a massively parallel system for assaying the effect of gene expression levels on fitness in Saccharomyces cerevisiae by systematically altering the expression level of ∼100 genes at ∼100 distinct levels spanning a 500-fold range at high resolution. We show that the relationship between expression levels and growth is gene and environment specific and provides information on the function, stoichiometry, and interactions of genes...
August 25, 2016: Cell
https://www.readbyqxmd.com/read/27445878/manipulating-the-placebo-response-in-experimental-pain-by-altering-doctor-s-performance-style
#20
Efrat Czerniak, Anat Biegon, Amitai Ziv, Orit Karnieli-Miller, Mark Weiser, Uri Alon, Atay Citron
BACKGROUND: Performance is paramount in traditional healing rituals. From a Western perspective, such performative behavior can be understood principally as inducing patients' faith in the performer's supernatural healing powers and effecting positive changes through the same mechanisms attributed to the placebo response, which is defined as improvement of clinical outcome in individuals receiving inactive treatment. Here we examined the possibility of using theatrical performance tools, including stage directions and scripting, to reproducibly manipulate the style and content of a simulated doctor-patient encounter and influence the placebo response in experimental pain...
2016: Frontiers in Psychology
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