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https://www.readbyqxmd.com/read/28538762/papillary-muscle-free-strain-in-patients-with-severe-degenerative-and-functional-mitral-regurgitation
#1
Alev Kılıcgedik, Gokhan Kahveci, Ahmet Seyfeddin Gurbuz, Can Yucel Karabay, Ahmet Guler, Suleyman Cagan Efe, Soe Moe Aung, Ugur Arslantas, Serdar Demir, Ibrahim Akin Izgi, Cevat Kirma
Fundamento: The role of papillary muscle function in severe mitral regurgitation with preserved and reduced left ventricular ejection fraction and the method of choice to evaluate PM have still been the subjects of controversy. Objectives: To evaluate and compare papillary muscle function in and between patients with severe degenerative and functional mitral regurgitation by using the free strain method. Methods: 64 patients with severe mitral regurgitation - 39 patients with degenerative mitral regurgitation (DMR group) and 25 patients with severe functional mitral regurgitation (FMR group) - and 30 control subjects (control group) were included in the study...
April 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28535124/serum-creatinine-and-cystatin-c-provide-conflicting-evidence-of-acute-kidney-injury-following-acute-ingestion-of-potassium-permanganate-and-oxalic-acid
#2
Thilini Madushanka Wijerathna, Indika Bandara Gawarammana, Dhammika Menike Dissanayaka, Chathura Palanagasinghe, Fathima Shihana, Gihani Dassanayaka, Seyed Shahmy, Zoltan Huba Endre, Fahim Mohamed, Nicholas Alan Buckley
AIM: Acute kidney injury (AKI) is common following deliberate self-poisoning with a combination washing powder containing oxalic acid (H2C2O4) and potassium permanganate (KMnO4). Early and rapid increases in serum creatinine (sCr) follow severe poisoning. We investigated the relationship of these increases with direct nephrotoxicity in an ongoing multicenter prospective cohort study in Sri Lanka exploring AKI following poisoning. METHODS: Multiple measures of change in kidney function were evaluated in 48 consenting patients who had serial sCr and serum cystatin C (sCysC) data available...
May 23, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28534381/evaluation-of-complementary-and-alternative-medicine-trials-registered-in-clinicaltrials-gov-database
#3
Omer Dizdar, Emre Bilgin, Serkan Akin, Saadettin Kilickap, Mutlu Hayran
PURPOSE: Complementary and alternative medicine (CAM) products are increasingly used because they are perceived as natural, relatively low-cost and probably effective therapies for various diseases including cancer. We aimed to determine the quantity and major characteristics of recent herbal/alternative medicine trials registered in clinicaltrials. gov in patients with cancer. METHODS: "Cancer AND (herbal OR complementary OR alternative)" key words were used to query clinicaltrials...
March 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28534068/trust-in-haptic-assistance-weighting-visual-and-haptic-cues-based-on-error-history
#4
Tricia L Gibo, Winfred Mugge, David A Abbink
To effectively interpret and interact with the world, humans weight redundant estimates from different sensory cues to form one coherent, integrated estimate. Recent advancements in physical assistance systems, where guiding forces are computed by an intelligent agent, enable the presentation of augmented cues. It is unknown, however, if cue weighting can be extended to augmented cues. Previous research has shown that cue weighting is determined by the reliability (inversely related to uncertainty) of cues within a trial, yet augmented cues may also be affected by errors that vary over trials...
May 22, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28532963/fully-endoscopic-interlaminar-and-transforaminal-lumbar-discectomy-analysis-of-47-complications-encountered-in-a-series-of-835-patients
#5
Ali Güven Yörükoğlu, Burcu Göker, Alican Tahta, Mehmet Osman Akçakaya, Aydın Aydoseli, Pulat Akın Sabancı, Yavuz Aras, Görkem Alkır, Altay Sencer, Murat Imer, Nail Izgi, Ali Tuncay Canbolat
OBJECTIVE: To report perioperative complications in fully endoscopic lumbar discectomy (FELD). METHODS: From September 2010 to November 2016, 835 patients underwent FELD. In total, 865 disc levels were operated on. Of the 835 patients, the transforaminal (TF) approach was used in 174 patients, while 691 patients were operated on using the interlaminar (IL) approach. Surgical complications occurred in 47 patients, which were retrospectively analyzed. RESULTS: Neurological deficits occurred in six patients...
May 19, 2017: Neurocirugía
https://www.readbyqxmd.com/read/28530028/a-rare-complication-diffuse-alveolar-haemorrhage-following-acute-coronary-syndrome
#6
Muzaffer Kahyaoglu, Cetin Gecmen, Ahmet Guner, Mehmet Celik, Ibrahim Akin Izgi
No abstract text is available yet for this article.
2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28529717/gene-length-and-detection-bias-in-single-cell-rna-sequencing-protocols
#7
Belinda Phipson, Luke Zappia, Alicia Oshlack
Background: Single cell RNA sequencing (scRNA-seq) has rapidly gained popularity for profiling transcriptomes of hundreds to thousands of single cells. This technology has led to the discovery of novel cell types and revealed insights into the development of complex tissues. However, many technical challenges need to be overcome during data generation. Due to minute amounts of starting material, samples undergo extensive amplification, increasing technical variability. A solution for mitigating amplification biases is to include unique molecular identifiers (UMIs), which tag individual molecules...
2017: F1000Research
https://www.readbyqxmd.com/read/28528696/reprogramming-of-dermal-fibroblasts-into-osteo-chondrogenic-cells-with-elevated-osteogenic-potency-by-defined-transcription-factors
#8
Yinxiang Wang, Ming-Hoi Wu, May Pui Lai Cheung, Mai Har Sham, Haruhiko Akiyama, Danny Chan, Kathryn S E Cheah, Martin Cheung
Recent studies using defined transcription factors to convert skin fibroblasts into chondrocytes have raised the question of whether osteo-chondroprogenitors expressing SOX9 and RUNX2 could also be generated during the course of the reprogramming process. Here, we demonstrated that doxycycline-inducible expression of reprogramming factors (KLF4 [K] and c-MYC [M]) for 6 days were sufficient to convert murine fibroblasts into SOX9(+)/RUNX2(+) cellular aggregates and together with SOX9 (S) promoted the conversion efficiency when cultured in a defined stem cell medium, mTeSR...
May 15, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28527867/association-of-neck-circumference-and-pulmonary-function-in-children
#9
Onur Akın, Mutluay Arslan, Cem Haymana, Erdem Karabulut, Bulent Hacihamdioglu, Suleyman Tolga Yavuz
BACKGROUND: Childhood obesity leads to many complications including impaired respiratory function. There are various anthropometric parameters related to obesity. OBJECTIVE: To investigate the correlation between anthropometric indices and pulmonary function test results in children without asthma. METHODS: Children without any respiratory disorders were enrolled in this study. Anthropometric measurements, such as height, weight, neck circumference (NC), and waist circumference, were obtained from the enrollees and body mass index was calculated...
May 17, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28527804/nutritive-value-and-fermentation-characteristics-of-alfalfa-mixed-grass-forage-wrapped-with-minimal-stretch-film-layers-and-stored-for-different-lengths-of-time
#10
W K Coblentz, R K Ogden, M S Akins, E A Chow
A key aspect of managing baled silages is to quickly achieve and then rigorously maintain anaerobic conditions within the silage mass. The concept of inserting an O2-limiting barrier (OB) into plastic commercial silage wraps has been evaluated previously, yielding mixed or inconclusive results. Our objective for this study was to maximize the challenge to a commercial polyethylene bale wrap, or the identical wrap containing an OB, by using minimal plastic (4 layers), and then extending storage periods as long as 357 d...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28527302/aortic-adventitial-fibroblast-sensitivity-to-mitogen-activated-protein-kinase-inhibitors-depends-on-substrate-stiffness
#11
Rebecca A Scott, Prathamesh M Kharkar, Kristi L Kiick, Robert E Akins
Adventitial fibroblasts (AFs) are key determinants of arterial function and critical mediators of arterial disease progression. The effects of altered stiffness, particularly those observed across individuals during normal vascular function, and the mechanisms by which AFs respond to altered stiffness, are not well understood. To study the effects of matrix stiffness on AF phenotype, cytokine production, and the regulatory pathways utilized to interpret basic cell-matrix interactions, human aortic AFs were grown in 5%, 7...
May 10, 2017: Biomaterials
https://www.readbyqxmd.com/read/28525300/regulation-of-cell-polarity-in-motility-and-cell-division-in-myxococcus-xanthus
#12
Dominik Schumacher, Lotte Søgaard-Andersen
Rod-shaped Myxococcus xanthus cells are polarized with proteins asymmetrically localizing to specific positions. This spatial organization is important for regulation of motility and cell division and changes over time. Dedicated protein modules regulate motility independent of the cell cycle, and cell division dependent on the cell cycle. For motility, a leading-lagging cell polarity is established that is inverted during cellular reversals. Establishment and inversion of this polarity are regulated hierarchically by interfacing protein modules that sort polarized motility proteins to the correct cell poles or cause their relocation between cell poles during reversals akin to a spatial toggle switch...
May 19, 2017: Annual Review of Microbiology
https://www.readbyqxmd.com/read/28524661/phonon-plasmon-coupling-and-active-cu-dopants-in-indium-arsenide-nanocrystals-studied-by-resonance-raman-spectroscopy
#13
Adam Faust, Yorai Amit, Uri Banin
Doping of semiconductor nanocrystals is an emerging tool to control their properties and has recently received increased interest as the means to characterize the impurities and their effect on the electronic characteristics of the nanocrystal evolve. We present a temperature-dependent Raman scattering study of Cu-doped InAs nanocrystals observing changes in the relative scattering intensities of the different modes upon increased dopant concentrations. First, the longitudinal optical (LO) phonon overtone mode is suppressed, indicating weakening of the coupling strength related to the effect of screening by the free electrons...
May 23, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28520794/the-complex-dynamics-of-products-and-its-asymptotic-properties
#14
Orazio Angelini, Matthieu Cristelli, Andrea Zaccaria, Luciano Pietronero
We analyse global export data within the Economic Complexity framework. We couple the new economic dimension Complexity, which captures how sophisticated products are, with an index called logPRODY, a measure of the income of the respective exporters. Products' aggregate motion is treated as a 2-dimensional dynamical system in the Complexity-logPRODY plane. We find that this motion can be explained by a quantitative model involving the competition on the markets, that can be mapped as a scalar field on the Complexity-logPRODY plane and acts in a way akin to a potential...
2017: PloS One
https://www.readbyqxmd.com/read/28517022/impact-and-management-of-left-ventricular-function-on-the-prognosis-of-takotsubo-syndrome
#15
Ibrahim El-Battrawy, Uzair Ansari, Siegfried Lang, Michael Behnes, Katja Schramm, Christian Fastner, Xiaobo Zhou, Jürgen Kuschyk, Erol Tülümen, Susanne Röger, Martin Borggrefe, Ibrahim Akin
AIMS: Early research has proposed that patients with Takotsubo syndrome (TTS) could have a higher mortality rate than the general population. Our study was conducted to determine the short- and long-term outcome of TTS patients associated with a significantly compromised left ventricular function on hospital admission. METHODS AND RESULTS: Our institutional database constituted a collective of 112 patients diagnosed with TTS between 2003 and 2015. The patients were classified into two groups based on the left ventricular ejection fraction (LVEF), with those presenting with a LVEF >35% on admission categorized into one group (n=65, 58%) and those presenting with LVEF ≤35% (n=47, 42%) categorized into another group...
May 18, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28514909/what-can-action-learning-offer-a-beleaguered-system-a-narrative-representing-the-relationship
#16
James Traeger
Purpose This is an attempt to write an account of action learning that is as close to the ground on which it was practised as the author can make it. In that sense, the reader can read what follows below as a kind of autoethnography, a "representation as relationship" as Gergen and Gergen (2002, p. 11) call it. This is because in the opportunity of telling a story about his practice as an action learning facilitator, the author hopes to evoke that which is more akin to the contactful environment of quality action learning than any amount of abstract theorising...
May 2, 2017: Leadership in Health Services
https://www.readbyqxmd.com/read/28511860/first-trimester-fetal-echocardiography-identification-of-cardiac-structures-for-screening-from-6-to-13%C3%A2-weeks-gestational-age
#17
Darren Hutchinson, Angela McBrien, Lisa Howley, Yuka Yamamoto, Priya Sekar, Tarek Motan, Venu Jain, Winnie Savard, Lisa K Hornberger
BACKGROUND: Early fetal echocardiography (FE), performed at 12 to 16 weeks' gestational age (GA), can be used to screen for fetal heart disease akin to that routinely performed in the second trimester. The efficacy of FE at earlier GAs has not been as well explored, particularly with recent advances in ultrasound technology. The aim of this study was to evaluate the efficacy of early FE in assessing fetal heart structure, and the added benefit of color Doppler (CD), from as early as 6 weeks through to 13(+6) weeks' GA...
May 13, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28508056/picosecond-amorphization-of-sio2-stishovite-under-tension
#18
Masaaki Misawa, Emina Ryuo, Kimiko Yoshida, Rajiv K Kalia, Aiichiro Nakano, Norimasa Nishiyama, Fuyuki Shimojo, Priya Vashishta, Fumihiro Wakai
It is extremely difficult to realize two conflicting properties-high hardness and toughness-in one material. Nano-polycrystalline stishovite, recently synthesized from Earth-abundant silica glass, proved to be a super-hard, ultra-tough material, which could provide sustainable supply of high-performance ceramics. Our quantum molecular dynamics simulations show that stishovite amorphizes rapidly on the order of picosecond under tension in front of a crack tip. We find a displacive amorphization mechanism that only involves short-distance collective motions of atoms, thereby facilitating the rapid transformation...
May 2017: Science Advances
https://www.readbyqxmd.com/read/28507780/current-concepts-in-elbow-arthroplasty
#19
REVIEW
Daniel Bachman, Akin Cil
Distal humeral replacement and the total elbow are two commonly-used arthroplastiesEach prosthesis has evolving indications and surgical techniquesRecent changes in device design and implantation methods are due to biomechanical and clinical outcome-based researchNew prostheses and methods provide: better elbow kinematics, more durable bearings and longer-lasting joint replacement potential Cite this article: EFORT Open Rev 2017;2:83-88. DOI: 10.1302/2058-5241.2.160064.
April 2017: EFORT Open Rev
https://www.readbyqxmd.com/read/28505235/view-independent-working-memory-representations-of-artificial-shapes-in-prefrontal-and-posterior-regions-of-the-human-brain
#20
Thomas B Christophel, Carsten Allefeld, Christian Endisch, John-Dylan Haynes
Traditional views of visual working memory postulate that memorized contents are stored in dorsolateral prefrontal cortex using an adaptive and flexible code. In contrast, recent studies proposed that contents are maintained by posterior brain areas using codes akin to perceptual representations. An important question is whether this reflects a difference in the level of abstraction between posterior and prefrontal representations. Here, we investigated whether neural representations of visual working memory contents are view-independent, as indicated by rotation-invariance...
May 13, 2017: Cerebral Cortex
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