keyword
MENU ▼
Read by QxMD icon Read
search

sapien

keyword
https://www.readbyqxmd.com/read/28095661/molecular-cloning-and-characterization-of-a-p38-like-mitogen-activated-protein-kinase-from-echinococcus-granulosus
#1
Guodong Lü, Jing Li, Chuanshan Zhang, Liang Li, Xiaojuan Bi, Chaowang Li, Jinliang Fan, Xiaomei Lu, Dominique A Vuitton, Hao Wen, Renyong Lin
Cystic echinococcosis (CE) treatment urgently requires a novel drug. The p38 mitogen-activated protein kinases (MAPKs) are a family of Ser/Thr protein kinases, but still have to be characterized in Echinococcus granulosus. We identified a 1,107 bp cDNA encoding a 368 amino acid MAPK protein (Egp38) in E. granulosus. Egp38 exhibits 2 distinguishing features of p38-like kinases: a highly conserved T-X-Y motif and an activation loop segment. Structural homology modeling indicated a conserved structure among Egp38, EmMPK2, and H...
December 2016: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28089455/comparison-of-transcatheter-aortic-valve-implantation-with-the-newest-generation-sapien-3-vs-direct-flow-medical-valve-in-a-single-center-cohort
#2
Eberhard Schulz, Alexander Jabs, Alexander Tamm, Patrick Herz, Andreas Schulz, Tommaso Gori, Stephan von Bardeleben, Walter Kasper-König, Ulrich Hink, Christian-Friedrich Vahl, Thomas Münzel
BACKGROUND: The latest generation transcatheter heart valves including Edwards Sapien 3 (ES3) and Direct Flow Medical (DFM) were designed to allow precise implantation at the intended position and to minimize prosthesis dysfunction as well as procedural complications. Our aim was to compare short-term functional and clinical outcomes of these 2 transcatheter aortic valve systems. METHODS: Of 174 patients undergoing transfemoral transcatheter aortic valve implantation (TAVI) at our institution between August 2013 and June 2015, 113 were treated with ES3 and 61 with DFM...
January 7, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28088356/advancing-the-prediction-accuracy-of-protein-protein-interactions-by-utilizing-evolutionary-information-from-position-specific-scoring-matrix-and-ensemble-classifier
#3
Lei Wang, Zhu-Hong You, Shi-Xiong Xia, Feng Liu, Xing Chen, Xin Yan, Yong Zhou
Protein-Protein Interactions (PPIs) are essential to most biological processes and play a critical role in most cellular functions. With the development of high-throughput biological techniques and in silico methods, a large number of PPI data have been generated for various organisms, but many problems remain unsolved. These factors promoted the development of the in silico methods based on machine learning to predict PPIs. In this study, we propose a novel method by combining ensemble Rotation Forest (RF) classifier and Discrete Cosine Transform (DCT) algorithm to predict the interactions among proteins...
January 11, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28086805/the-safety-of-introducing-a-new-generation-tavr-device-one-departments-experience-from-introducing-a-second-generation-repositionable-tavr
#4
Henrik Bjursten, Shahab Nozohoor, Malin Johansson, Igor Zindovic, Carl-Fredrik Appel, Johan Sjögren, Magnus Dencker, Göran Olivecrona, Jan Harnek, Sasha Koul, Ted Feldman, Michael J Reardon, Matthias Götberg
BACKGROUND: In the evolving field of transcatheter aortic valve replacements a new generation of valves have been introduced to clinical practice. With the complexity of the TAVR procedure and the unique aspects of each TAVR device, there is a perceived risk that changing or adding a new valve in a department could lead to a worse outcome for patients, especially during the learning phase. The objective was to study the safety aspect of introducing a second generation repositionable transcatheter valve (Boston Scientific Lotus valve besides Edwards Sapien valve) in a department...
January 13, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28079178/significance-of-oxygen-transport-through-aquaporins
#5
Janusz J Zwiazek, Hao Xu, Xiangfeng Tan, Alfonso Navarro-Ródenas, Asunción Morte
Aquaporins are membrane integral proteins responsible for the transmembrane transport of water and other small neutral molecules. Despite their well-acknowledged importance in water transport, their significance in gas transport processes remains unclear. Growing evidence points to the involvement of plant aquaporins in CO2 delivery for photosynthesis. The role of these channel proteins in the transport of O2 and other gases may also be more important than previously envisioned. In this study, we examined O2 permeability of various human, plant, and fungal aquaporins by co-expressing heterologous aquaporin and myoglobin in yeast...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28077607/anatomy-of-mdm2-and-mdm4-in-evolution
#6
REVIEW
Ban Xiong Tan, Hoe Peng Liew, Joy S Chua, Farid J Ghadessy, Yaw Sing Tan, David P Lane, Cynthia R Coffill
Mouse double minute (Mdm) genes span an evolutionary timeframe from the ancient eukaryotic placozoa Trichoplax adhaerens to Homo sapiens, implying a significant and possibly conserved cellular role throughout history. Maintenance of DNA integrity and response to DNA damage involve many key regulatory pathways, including precise control over the tumour suppressor protein p53. In most vertebrates, degradation of p53 through proteasomal targeting is primarily mediated by heterodimers of Mdm2 and the Mdm2-related protein Mdm4 (also known as MdmX)...
January 10, 2017: Journal of Molecular Cell Biology
https://www.readbyqxmd.com/read/28077068/structure-and-evolution-of-the-filaggrin-gene-repeated-region-in-primates
#7
Vanessa Romero, Kazuyoshi Hosomichi, Hirofumi Nakaoka, Hiroki Shibata, Ituro Inoue
BACKGROUND: The evolutionary dynamics of repeat sequences is quite complex, with some duplicates never having differentiated from each other. Two models can explain the complex evolutionary process for repeated genes-concerted and birth-and-death, of which the latter is driven by duplications maintained by selection. Copy number variations caused by random duplications and losses in repeat regions may modulate molecular pathways and therefore affect phenotypic characteristics in a population, resulting in individuals that are able to adapt to new environments...
January 11, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28075225/plants-contain-small-families-of-upf0016-proteins-including-the-photosynthesis-affected-mutant71-transporter
#8
Natalie Hoecker, Dario Leister, Anja Schneider
PHOTOSYNTHESIS AFFECTED MUTANT71 (PAM71) is an integral thylakoid membrane protein that functions in manganese uptake into the lumen. Manganese is needed in the thylakoid lumen to build up the inorganic Mn4CaO5 cluster, the catalytic center for water oxidation, and is hence indispensable for oxygen evolution. A recent study revealed that PAM71 is well conserved in plants and shares homology to GCR1 DEPENDENT TRANSLATION FACTOR1 (GDT1) and TRANSMEMBRANE PROTEIN 165 (TMEM165) in Saccharomyces cerevisiae and Homo sapiens, respectively...
January 11, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28070241/comparison-between-the-sapien-s3-and-the-sapien-xt-transcatheter-heart-valves-a-single-center-experience
#9
Fadi J Sawaya, Marco Spaziano, Thierry Lefèvre, Andrew Roy, Phillippe Garot, Thomas Hovasse, Antoinette Neylon, Hakim Benamer, Mauro Romano, Thierry Unterseeh, Marie-Claude Morice, Bernard Chevalier
AIM: To investigate the clinical outcomes of transcatheter aortic valve implantation (TAVI) with the SAPIEN 3 transcatheter heart valve (S3-THV) vs the SAPIEN XT valve (XT-THV). METHODS: We retrospectively analyzed 507 patients that underwent TAVI with the XT-THV and 283 patients that received the S3-THV at our institution between March 2010 and December 2015. RESULTS: Thirty-day mortality (3.5% vs 8.7%; OR = 0.44, P = 0.21) and 1-year mortality (25...
December 26, 2016: World Journal of Cardiology
https://www.readbyqxmd.com/read/28065915/effective-orifice-area-and-hemodynamic-performance-of-the-transcatheter-edwards-sapien-3-prosthesis-short-term-and-1-year-follow-up
#10
Mischa Külling, Jeremy Külling, Christophe Wyss, David Hürlimann, Ivano Reho, Sacha Salzberg, Ines Bühler, Georg Noll, Jürg Grünenfelder, Roberto Corti, Patric Biaggi
AIMS: The Edwards Sapien 3 heart valve prosthesis (S3) is commonly used for transcatheter aortic valve implantation (TAVI) and is available in three sizes. To date no data has been published on the effective orifice area (EOA) and the hemodynamic performance of the three different S3 sizes. The aim of this study was to measure the size-specific EOA and hemodynamic performance of the S3 in short-term and 1-year follow-up. METHODS AND RESULTS: One hundred and thirteen consecutive patients treated by TAVI with a S3 prosthesis at the Heart Clinic Zurich between May 2014 and July 2015 were included...
January 8, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28057286/transcatheter-valve-in-ring-implantation%C3%A2-for-the-treatment-of-residual%C3%A2-or-recurrent-tricuspid-valve-dysfunction-after-prior-surgical-repair
#11
Jamil Aboulhosn, Allison K Cabalka, Daniel S Levi, Dominique Himbert, Luca Testa, Azeem Latib, Raj R Makkar, Younes Boudjemline, Dennis W Kim, Joelle Kefer, Sabine Bleiziffer, Gunter Kerst, Danny Dvir, Doff B McElhinney
OBJECTIVES: This study sought to describe the results of transcatheter tricuspid valve-in-ring (TVIR) implantation for treatment of tricuspid regurgitation (TR). BACKGROUND: Off-label use of transcatheter valves within surgically placed tricuspid annuloplasty prostheses has only been described in small reports. An international multicenter registry was developed to collect data on TVIR implantation. METHODS: Data were collected from 13 sites on 22 patients (5 to 69 years of age) with TR who underwent catheterization with the intent to perform TVIR implantation...
January 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28048969/on-the-developmental-self-regulatory-dynamics-and-evolution-of-individuated-multicellular-organisms
#12
Felipe A Veloso
Changes in gene expression are thought to regulate the cell differentiation process intrinsically through complex epigenetic mechanisms. In fundamental terms, however, this assumed regulation refers only to the intricate propagation of changes in gene expression or else leads to non-explanatory regresses. The developmental self-regulatory dynamics and evolution of individuated multicellular organisms also lack a unified and falsifiable description. To fill this gap, I computationally analyzed publicly available high-throughput data of histone H3 post-translational modifications and mRNA abundance for different Homo sapiens, Mus musculus, and Drosophila melanogaster cell-type/developmental-period samples...
December 31, 2016: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28045412/transcatheter-aortic-valve-implantation-with-the-edwards-sapien-3-valve-first-experiences-in-turkey
#13
Abdullah Nabi Aslan, Serdal Baştuğ, Hacı Ahmet Kasapkara, Hüseyin Ayhan, Hakan Süygün, Telat Keleş, Tahir Durmaz, Nihal Akar Bayram, Emine Bilen, Engin Bozkurt
OBJECTIVE: Transcatheter aortic valve implantation (TAVI) has shown promising results in patients with severe aortic stenosis (AS) at high risk for open heart surgery. We aimed to evaluate outcomes of patients who underwent TAVI with Edwards SAPIEN 3 Transcatheter Heart Valve (S3), a second-generation TAVI device. METHODS: Between November 2014 and June 2016, 31 high-risk patients received balloon-expandable S3 valve at Atatürk Training and Research Hospital that has the largest case series in Turkey...
December 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28044267/late-paravalvular-aortic-regurgitation-migration-of-the-valve-or-late-recoil
#14
Ashkan Karimi, Negiin Pourafshar, Ki E Park, Calvin Y Choi, Kiran Mogali, Wade W Stinson, Eddie W Manning, Anthony A Bavry
A 79-year-old man underwent trans-catheter aortic valve replacement for symptomatic severe aortic stenosis with a 26-mm Edwards SAPIEN XT valve. Immediately after valve deployment there was moderate amount of paravalvular leak. Post-dilation was performed with an additional 2 cc of volume, and the paravalvular leak was reduced to trace. Nine months later, trans-thoracic echocardiography revealed moderate to severe paravalvular leak and possible aortic migration of the valve. The patient was brought back for the treatment of the paravalvular leak which was suspected to be due to valve migration...
January 2, 2017: Cardiology and Therapy
https://www.readbyqxmd.com/read/28040758/stent-valve-implantation-in-conventional-redo-aortic-valve-surgery-to-prevent-patient-prosthesis-mismatch
#15
Enrico Ferrari, Giorgio Franciosi, Sara Clivio, Francesco Faletra, Marco Moccetti, Tiziano Moccetti, Giovanni Pedrazzini, Stefanos Demertzis
OBJECTIVES: The goal was to show the technical details, feasibility and clinical results of balloon-expandable stent valve implantation in the aortic position during conventional redo open-heart surgery in selected obese patients with a small aortic prosthesis and severe patient-prosthesis mismatch. METHODS: Two symptomatic overweight patients (body mass index of 31 and 38), each with a small aortic prosthesis (a 4-year-old, 21-mm Hancock II biological valve and a 29-year-old, 23-mm Duromedic mechanical valve), increased transvalvular gradients (59/31 and 74/44 mmHg) and a reduced indexed effective orifice area (0...
December 31, 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28038838/-interventional-cardiac-catheterization-in-congenital-heart-disease
#16
François Godart, Ali Houeijeh
Interventional cardiac catheterization has a major place in the management of congenital heart disease. Since the Rashkind atrioseptostomy in mid-1960s, many techniques have been developed. For some, it is necessary to close a cardiac or extracardiac shunt using occluder (double disc system, plug, coil…): closure of atrial septal defect, ventricular septal defect or patent arterial duct. For others, it is necessary to treat a valvular or vascular stenosis using a balloon catheter: dilatation of the pulmonary or the aortic valve, dilatation of aortic coarctation...
December 27, 2016: La Presse Médicale
https://www.readbyqxmd.com/read/28034581/comparison-of-systematic-predilation-selective-predilation-and-direct-transcatheter-aortic-valve-implantation-with-the-sapien-s3-valve
#17
Marco Spaziano, Fadi Sawaya, Bernard Chevalier, Andrew Roy, Antoinette Neylon, Philippe Garot, Thomas Hovasse, Hakim Benamer, Mauro Romano, Thierry Unterseeh, Erik Bouvier, Bertrand Cormier, Marie-Claude Morice, Thierry Lefèvre
BACKGROUND: Despite previously described feasibility, direct transcatheter aortic valve implantation (TAVI) with the Edwards SAPIEN S3 device (S3-THV) (Edwards Lifesciences, Irvine, CA) has not been compared with either a systematic or a selective predilation approach. METHODS: Patients undergoing predilation were divided into a systematic group (regardless of anatomic features) and a selective group (in the context of high valvular calcium burden). Both groups were matched in a 2:1 fashion to patients who underwent direct TAVI...
October 4, 2016: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28029363/comparison-of-the-edwards-sapien-s3-versus-medtronic-evolut-r-devices-for-transcatheter-aortic-valve-implantation
#18
Jeremy Ben-Shoshan, Maayan Konigstein, David Zahler, Gilad Margolis, Ehud Chorin, Arie Steinvil, Yaron Arbel, Galit Aviram, Yoav Granot, Michael Barkagan, Gad Keren, Amir Halkin, Shmuel Banai, Ariel Finkelstein
New generation of the most widely used devices for transcatheter aortic valve implantation have been recently introduced into practice. We compare the short-term outcomes of transcatheter aortic valve implantation with the Edwards SAPIEN S3 and the Medtronic Evolut-R. We performed a retrospective analysis from a single high-volume tertiary center. Valve Academic Research Consortium-2 criteria were used to define composite end points of device success and safety at 30 days. Study population included 232 patients implanted with the SAPIEN S3 (n = 124) and Evolut-R (n = 108)...
October 7, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28029207/prospective-comparison-between-three-tavr-devices-acurate-neo-vs-corevalve-vs-sapien-xt-a-single-heart-team-experience-in-patients-with-severe-aortic-stenosis
#19
Tannas Jatene, Antonio Castro-Filho, Rafael A Meneguz-Moreno, Dimytri A Siqueira, Alexandre A C Abizaid, Auristela I O Ramos, Magaly Arrais, David C S Le Bihan, Rodrigo B M Barretto, Adriana C Moreira, Amanda G M R Sousa, J Eduardo Sousa
OBJECTIVE: We sought to compare the new transcatheter aortic valve replacement (TAVR) device ACURATE neo (ACT) with the already established CoreValve (MCV) and SAPIEN XT (SXT) for the treatment of severe aortic stenosis (AS). BACKGROUND: Very few data on TAVR devices are available beyond MCV and SAPIEN and there is no previous study comparing ACT with MCV and SXT. METHODS: We prospectively evaluated consecutive patients who underwent transfemoral TAVR for the treatment of severe AS...
December 28, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28028692/in-vitro-hydrodynamic-assessment-of-a-new-transcatheter-heart-valve-concept-the-triskele
#20
Benyamin Rahmani, Spyros Tzamtzis, Rose Sheridan, Michael J Mullen, John Yap, Alexander M Seifalian, Gaetano Burriesci
This study presents the in vitro hydrodynamic assessment of the TRISKELE, a new system suitable for transcatheter aortic valve implantation (TAVI), aiming to mitigate the procedural challenges experienced with current technologies. The TRISKELE valve comprises three polymeric leaflet and an adaptive sealing cuff, supported by a novel fully retrievable self-expanding nitinol wire frame. Valve prototypes were manufactured in three sizes of 23, 26, and 29 mm by automated dip-coating of a biostable polymer, and tested in a hydrodynamic bench setup in mock aortic roots of 21, 23, 25, and 27 mm annulus, and compared to two reference valves suitable for equivalent implantation ranges: Edwards SAPIEN XT and Medtronic CoreValve...
December 27, 2016: Journal of Cardiovascular Translational Research
keyword
keyword
61291
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"