keyword
MENU ▼
Read by QxMD icon Read
search

sapien

keyword
https://www.readbyqxmd.com/read/28820553/is-transcatheter-tricuspid-valve-in-valve-implantation-feasible-in-the-presence-of-right-atrial-thrombus
#1
Jan Henzel, Zofia Dzielińska, Marek Konka, Maciej Dąbrowski, Marcin Protasiewicz, Adam Witkowski, Marcin Demkow
The case is reported of a successful transcatheter implantation of an Edwards SAPIEN 3 valve (29 mm) into a failing tricuspid bioprosthesis (Sorin Pericarbon, 31 mm). The procedure was performed in a 69-year-old woman with post-rheumatic mitral and tricuspid valve disease. Multiple previous cardiac surgeries precluded the use of another surgical approach. A large, organized, two-piece thrombus in the enlarged right atrium was not considered an absolute contraindication to the procedure. The SAPIEN 3 valve was implanted under general anesthesia, via a femoral venous access, under three-dimensional transesophageal echocardiography guidance...
March 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28820541/automatic-estimation-of-optimal-deployment-of-transcatheter-aortic-valve-implantation-using-computed-tomography
#2
Arthur Kerner, Sobhi Abadi, Roy Dotan, Marcia Javitt, Doron Aronson, Jonathan Lessick
BACKGROUND: A comparison was made between the accuracy of and time saved by using novel automated software for pre-procedural computed tomography (CT) planning before transcatheter aortic valve implantation (TAVI) and manual methods. Preprocedural CT to assess aortic annulus dimensions and predict the optimal C-arm implant angle before TAVI can reduce complications related to incorrect prosthesis sizing and positioning. METHODS: A total of 61 consecutive patients underwent TAVI using either the SAPIEN XT or CoreValve prosthesis...
March 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28818562/conduction-recovery-and-avoidance-of-permanent-pacing-after-transcatheter-aortic-valve-implantation
#3
Corinne Marzahn, Cornel Koban, Martin Seifert, Akihiro Isotani, Michael Neuß, Frank Hölschermann, Christian Butter
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is an established treatment option for patients with severe aortic stenosis and high surgical risk. Currently, various prosthesis types are available. Atrioventricular block (AVB) requiring pacemaker (PM) implantation is a typical complication after TAVI. This study investigated the recovery of AV node conduction and mid-term outcome of patients with or without PM implantation after TAVI according to prosthesis type. METHODS: From July 2008 to May 2015, 856 transcatheter heart valves were implanted at our center (age: 80...
August 14, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28813397/the-oldest-homo-sapiens
#4
Kate Wong
No abstract text is available yet for this article.
August 15, 2017: Scientific American
https://www.readbyqxmd.com/read/28812736/the-evolution-and-population-diversity-of-human-specific-segmental-duplications
#5
Megan Y Dennis, Lana Harshman, Bradley J Nelson, Osnat Penn, Stuart Cantsilieris, John Huddleston, Francesca Antonacci, Kelsi Penewit, Laura Denman, Archana Raja, Carl Baker, Kenneth Mark, Maika Malig, Nicolette Janke, Claudia Espinoza, Holly A F Stessman, Xander Nuttle, Kendra Hoekzema, Tina A Lindsay-Graves, Richard K Wilson, Evan E Eichler
Segmental duplications contribute to human evolution, adaptation and genomic instability but are often poorly characterized. We investigate the evolution, genetic variation and coding potential of human-specific segmental duplications (HSDs). We identify 218 HSDs based on analysis of 322 deeply sequenced archaic and contemporary hominid genomes. We sequence 550 human and nonhuman primate genomic clones to reconstruct the evolution of the largest, most complex regions with protein-coding potential (N = 80 genes from 33 gene families)...
February 17, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28806931/draft-de-novo-transcriptome-assembly-and-proteome-characterization-of-the-electric-lobe-of-tetronarce-californica-a-molecular-tool-for-the-study-of-cholinergic-neurotransmission-in-the-electric-organ
#6
Maria Stavrianakou, Ricardo Perez, Cheng Wu, Matthew S Sachs, Rodolfo Aramayo, Mark Harlow
BACKGROUND: The electric organ of Tetronarce californica (an electric ray formerly known as Torpedo californica) is a classic preparation for biochemical studies of cholinergic neurotransmission. To broaden the usefulness of this preparation, we have performed a transcriptome assembly of the presynaptic component of the electric organ (the electric lobe). We combined our assembled transcriptome with a previous transcriptome of the postsynaptic electric organ, to define a MetaProteome containing pre- and post-synaptic components of the electric organ...
August 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28805540/novel-approach-for-structural-identification-of-protein-family-glyoxalase-i
#7
Anton M Kargatov, Eugenia A Boshkova, Yuri N Chirgadze
Glyoxalase is one of two enzymes of the glyoxalase detoxification system against methylglyoxal and other aldehydes, the metabolites derived from glycolysis. The glyoxalase system is found almost in all living organisms: bacteria, protozoa, plants and animals, including humans, and is related to the class of "life essential proteins". The enzyme belongs to the expanded Glyoxalase/Bleomycin resistance protein/Dioxygenase superfamily. At present the GenBank contains about seven hundreds of amino acid sequences of this enzyme type, and the Protein Data Bank includes dozens of spatial structures...
August 14, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28801508/intricate-and-cell-type-specific-populations-of-endogenous-circular-dna-eccdna-in-caenorhabditis-elegans-and-homo-sapiens
#8
Massa J Shoura, Idan Gabdank, Loren Hansen, Jason Merker, Jason Gotlib, Stephen D Levene, Andrew Z Fire
Investigations aimed at defining the 3-D configuration of eukaryotic chromosomes have consistently encountered an endogenous population of chromosome-derived circular genomic DNA, referred to as extrachromosomal circular DNA (eccDNA). While the production, distribution, and activities of eccDNAs remain understudied, eccDNA formation from specific regions of the linear genome has profound consequences on the regulatory and coding capabilities for these regions. Here, we define eccDNA distributions in C. elegans and in three human cell types, utilizing a set of DNA-topology dependent approaches for enrichment and characterization...
August 11, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28797433/periprocedural-myocardial-injury-depends-on%C3%A2-transcatheter-heart-valve-type-but-does%C3%A2-not%C3%A2-predict-mortality-in-patients-after-transcatheter-aortic-valve-replacement
#9
Anja Stundl, Regina Schulte, Hannah Lucht, Marcel Weber, Alexander Sedaghat, Jasmin Shamekhi, Berndt Zur, Eberhard Grube, Fritz Mellert, Armin Welz, Rolf Fimmers, Georg Nickenig, Nikos Werner, Jan-Malte Sinning
OBJECTIVES: The aims of this study were to determine plasma elevations of biomarkers of myocardial injury associated with transfemoral (TF) transcatheter aortic valve replacement (TAVR) and to evaluate their prognostic value. BACKGROUND: Increases in biomarkers of myocardial injury are a common finding after TAVR, but their clinical significance is unclear. METHODS: In 756 consecutive TF TAVR patients, cardiac high-sensitivity troponin I (hsTnI) and creatine kinase MB (CK-MB) levels were measured at pre-defined time points to assess the occurrence of myocardial injury (defined as 15 times the upper reference limit for hsTnI [≥1...
August 14, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28794033/ancient-evolution-and-dispersion-of-human-papillomavirus-type-58-variants
#10
Zigui Chen, Wendy C S Ho, Siaw Shi Boon, Priscilla T Y Law, Martin C W Chan, Rob DeSalle, Robert D Burk, Paul K S Chan
Human papillomavirus type 58 is found in 10-18% of cervical cancers in East Asia but rather uncommon elsewhere. The distribution and oncogenic potential of HPV58 variants appear to be heterogeneous since the E7 T20I/G63S variant is more prevalent in East Asia and confers 7-9 fold higher risk for cervical precancer and cancer. However, the underlying genomic mechanisms that explain the geographic and carcinogenic diversity of HPV58 variants are still poorly understood. In this study, we used a combination of phylogenetic analyses and bioinformatics to investigate the deep evolutionary history of HPV58 complete genome variants...
August 9, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28792517/comparison-of-alternative-approaches-for-analysing-multi-level-rna-seq-data
#11
Irina Mohorianu, Amanda Bretman, Damian T Smith, Emily K Fowler, Tamas Dalmay, Tracey Chapman
RNA sequencing (RNA-seq) is widely used for RNA quantification in the environmental, biological and medical sciences. It enables the description of genome-wide patterns of expression and the identification of regulatory interactions and networks. The aim of RNA-seq data analyses is to achieve rigorous quantification of genes/transcripts to allow a reliable prediction of differential expression (DE), despite variation in levels of noise and inherent biases in sequencing data. This can be especially challenging for datasets in which gene expression differences are subtle, as in the behavioural transcriptomics test dataset from D...
2017: PloS One
https://www.readbyqxmd.com/read/28776919/open-surgical-mitral-valve-replacement-with-a-transcatheter-edwards-sapien-xt-valve
#12
Tanveer Ahmad, Prakash M Ludhani, Ronen Gurvitch, John Goldblatt, James Tatoulis
No abstract text is available yet for this article.
August 4, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28770831/the-deep-human-prehistory-of-global-tropical-forests-and-its-relevance-for-modern-conservation
#13
REVIEW
Patrick Roberts, Chris Hunt, Manuel Arroyo-Kalin, Damian Evans, Nicole Boivin
Significant human impacts on tropical forests have been considered the preserve of recent societies, linked to large-scale deforestation, extensive and intensive agriculture, resource mining, livestock grazing and urban settlement. Cumulative archaeological evidence now demonstrates, however, that Homo sapiens has actively manipulated tropical forest ecologies for at least 45,000 years. It is clear that these millennia of impacts need to be taken into account when studying and conserving tropical forest ecosystems today...
August 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28770823/the-deep-human-prehistory-of-global-tropical-forests-and-its-relevance-for-modern-conservation
#14
REVIEW
Patrick Roberts, Chris Hunt, Manuel Arroyo-Kalin, Damian Evans, Nicole Boivin
Significant human impacts on tropical forests have been considered the preserve of recent societies, linked to large-scale deforestation, extensive and intensive agriculture, resource mining, livestock grazing and urban settlement. Cumulative archaeological evidence now demonstrates, however, that Homo sapiens has actively manipulated tropical forest ecologies for at least 45,000 years. It is clear that these millennia of impacts need to be taken into account when studying and conserving tropical forest ecosystems today...
August 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28768675/percutaneous-valve-in-valve-in-the-tricuspid-position-in-a-patient-with-tetralogy-of-fallot
#15
Abhinay Challa, Ryan Markham, Darren Walters
Here, we describe a case of a successful percutaneous insertion of a transcatheter 29 mm Edwards Sapien XT valve into a tricuspid valve in a patient with repaired tetralogy of fallot.Similar procedures have been performed with the Edwards Sapien valve and Melody valves; however, this is the first case described in the literature of an Edwards Sapien valve used in a patient with Tetralogy of Fallot.With procedural safety being demonstrated, this case illustrates an important alternative treatment option for patients with congenital heart disease...
August 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28768268/qualitative-and-quantitative-analysis-of-primary-neocortical-areas-in-selected-mammals
#16
Elisabeth van Kann, Bruno Cozzi, Patrick R Hof, Helmut H A Oelschläger
The present study focuses on the relationship between neocortical structures and functional aspects in three selected mammalian species. Our aim was to compare cortical layering and neuron density in the projection areas (somatomotor, M1; somatosensory, S1; auditory, A1; and visual, V1; each in a wider sense). Morphological and design-based stereological analysis was performed in the wild boar (Sus scrofa scrofa) as a representative terrestrial hoofed animal (artiodactyl) and the common dolphin (Delphinus delphis) as a highly derived related aquatic mammal (cetartiodactyl)...
July 29, 2017: Brain, Behavior and Evolution
https://www.readbyqxmd.com/read/28765870/the-relationship-of-cranial-orbital-and-nasal-cavity-size-with-the-morphology-of-the-supraorbital-region-in-modern-homo-sapiens
#17
Wioletta Nowaczewska, Urszula Łapicka, Agata Cieślik, Przemysław Biecek
Morphological variation of the supraorbital region (SR) in human crania has been investigated and its potential sources suggested, along with the importance of the size of the facial skeleton, neurocranium, and orbit for the formation of this region. However, previous studies have not indicated whether facial size exhibits a stronger association with SR robusticity than neurocranial size or sex; moreover, the association between orbital volume and SR robusticity has been analysed only in non-human primate skulls...
August 1, 2017: Anthropologischer Anzeiger; Bericht über die Biologisch-anthropologische Literatur
https://www.readbyqxmd.com/read/28761999/expression-of-chondroitin-4-o-sulfotransferase-in-escherichia-coli-and-pichia-pastoris
#18
Wenqin He, Yuanyuan Zhu, Abhijeet Shirke, Xiaojun Sun, Jian Liu, Richard A Gross, Mattheos A G Koffas, Robert J Linhardt, Ming Li
Chondroitin sulfates are linear sulfated polysaccharides called glycosaminoglycans. They are important nutraceutical and pharmaceutical products that are biosynthesized through the action of chondroitin sulfotransferases on either an unsulfated chondroitin or a dermatan polysaccharide precursor. While the enzymes involved in the biosynthesis of chondroitin sulfates are well known, the cloning end expression of these membrane-bound Golgi enzymes continue to pose challenges. The major chondroitin-4-sulfotransferase, Homo sapiens C4ST-1, had been previously cloned and expressed from mammalian CHO, COS-7, and HEK 293 cells, and its activity was shown to require glycosylation...
July 31, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28761403/transcatheter-tricuspid-valve-in-valve-replacement-with-an-edwards-sapien-3-valve
#19
Pranav Loyalka, Angelo Nascimbene, Benjamin Metz, Igor D Gregoric, Ajay Sundara Raman, Biswajit Kar
A few case reports and case series have documented the outcomes in patients with tricuspid bioprosthetic valvular degeneration who underwent transcatheter implantation of the Medtronic Melody and the Edwards Sapien XT and Sapien 3 valves. In this report, we describe the case of a 49-year-old woman with severe bioprosthetic tricuspid valvular stenosis and multiple comorbidities who underwent transcatheter tricuspid valve replacement with a Sapien 3 valve.
June 2017: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28760473/transapical-mitral-valve-implantation-for-native-mitral-valve-stenosis-using-a-balloon-expandable-prosthesis
#20
Philipp Kiefer, Thilo Noack, Joerg Seeburger, Alexandro Hoyer, Axel Linke, Norman Mangner, Lukas Lehmkuhl, Friedrich Wilhelm Mohr, David Holzhey
BACKGROUND: Transcatheter mitral valve implantation (TMVI) is still in its infancy and is mainly limited to valve-in-valve or valve-in-ring implantations. We present the early experience with TMVI for severe calcified native MV stenosis. METHODS: Between January 2014 and June 2015, 6 of 11 patients screened (mean age, 77.4 ± 6.3 years; 66% men) with severe native mitral valve (MV) stenosis (mean gradient [Pmean], 11.1 ± 2.1 mm Hg; mean effective orifice area [EOA], 0...
July 28, 2017: Annals of Thoracic Surgery
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"