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https://www.readbyqxmd.com/read/29772532/differential-effects-of-the-pi3k-akt-pathway-on-antler-stem-cells-for-generation-and-regeneration-of-antlers-in-vitro
#1
Zhen Liu, Haiping Zhao, Datao Wang, Chris McMahon, Chunyi Li
Understanding the role of the PI3K/AKT pathway in regulating basic antler stem cell parameters and angiogenesis may provide an insight into the mechanisms underlying mammalian appendage development. The present study took multiple approaches in vitro to investigate the effects of the PI3K/AKT pathway on antler stem cells. By addition of LY294002, proliferation rate of the antlerogenic periosteum (AP) cells was decreased significantly ( p <0.01), while the proliferation rate of the pedicle periosteum (PP) cells decreased to a lesser extent; the cytoskeleton of the AP cells was essentially collapsed; and the PP cells significantly shrunken...
June 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/29770366/complete-resolution-of-left-atrial-appendage-thrombosis-with-oral-dabigatran-etexilate-in-a-patient-with-myotonic-dystrophy-type-1-and-atrial-fibrillation
#2
Anna Rago, Andrea Antonio Papa, Giulia Arena, Marco Mosella, Antonio Cassese, Alberto Palladino, Paolo Golino
Myotonic Dystrophy type 1 (DM1) is the most common muscular dystrophy in adult life characterized by muscle dysfunction and cardiac conduction abnormalities. Atrial fibrillation frequently occurs in DM1 patients. It's related to the discontinuous and inhomogeneous propagation of sinus impulses and to the prolongation of atrial conduction time, caused by progressive fibrosis and fatty replacement of the myocardium. AF predisposes to a hyper-coagulable state and to an increased risk of thromboembolism. We report the first case of complete resolution of left atrial appendage thrombosis with oral dabigatran etexilate in a myotonic dystrophy type I patient with atrial fibrillation scheduled for transesophageal echocardiogram-guided direct current cardioversion...
December 2017: Acta Myologica: Myopathies and Cardiomyopathies: Official Journal of the Mediterranean Society of Myology
https://www.readbyqxmd.com/read/29760285/occurrence-of-incomplete-endothelialization-causing-residual-permeability-after-left-atrial-appendage-closure
#3
Mathieu Granier, Guillaume Laugaudin, François Massin, Stephane Cade, Pierre François Winum, Cornelia Freitag, Jean-Luc Pasquie
AIMS: Percutaneous left atrial appendage (LAA) occlusion is occasionally incomplete, with residual permeability of the LAA on cardiac computed tomography. The cause for this is unclear. Our objective was to determine if residual permeability was related to incomplete endothelialization. METHODS: A total of 35 consecutive patients contraindicated for anticoagulant therapy admitted for LAA occlusion were included; 12 patients received a Watchman device (Boston Scientific) and 23 patients received an Amplatzer Cardiac Plug (St...
May 15, 2018: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29759784/atrial-tachycardias-after-surgical-atrial-fibrillation-ablation-clinical-characteristics-electrophysiological-mechanisms-and-ablation-outcomes-from-a-large-multicenter-study
#4
Rakesh Gopinathannair, Philip L Mar, Muhammad Rizwan Afzal, Luigi Di Biase, Yixi Tu, Thanmay Lakkireddy, Jaimin R Trivedi, Mark S Slaughter, Andrea Natale, Dhanunjaya Lakkireddy
OBJECTIVES: The clinical characteristics, electrophysiological mechanisms, and ablation outcomes of post-surgical atrial fibrillation ablation (SAFA) atrial tachycardias (ATs) have not been studied in a large, multicenter cohort. BACKGROUND: ATs are often seen following SAFA. METHODS: Analysis was performed on 137 patients (age, 62 ± 10 years; 74% male) who underwent catheter ablation for symptomatic post-SAFA AT from 2004 to 2013 at 3 high-volume institutions in the United States...
August 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759706/the-human-left-atrial-venous-circulation-as-a-vascular-route-for-atrial-pharmacological-therapies-effects-of-ethanol-infusion
#5
Miguel Valderrábano, Percy Francisco Morales, Moisés Rodríguez-Mañero, Candela Lloves, Paul A Schurmann, Amish S Dave
OBJECTIVES: This study catalogued the human venous left atrium (LA) circulation system and the ablative effects of ethanol in different branches. BACKGROUND: Vascular routes to target the LA could have significant therapeutic potential. Beyond the vein of Marshall (VOM), the fluoroscopic LA venous anatomy has not been described. METHODS: Patients undergoing ethanol infusion in the VOM as adjunctive therapy to atrial fibrillation (AF) catheter ablation were included in this study...
September 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759679/left-atrial-thrombus-after-left-atrial-appendage-ligation-with-the-lariat-device
#6
Saroj Neupane, Zain Azzo, Sushruth Edla, Gerald I Cohen
No abstract text is available yet for this article.
December 11, 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759670/systemic-octreotide-therapy-in-prevention-of-gastrointestinal-bleeds-related-to-arteriovenous-malformations-and-obscure-etiology-in-atrial-fibrillation
#7
Venkat Vuddanda, Mohammad-Ali Jazayeri, Mohit K Turagam, Madhav Lavu, Valay Parikh, Donita Atkins, Sudharani Bommana, Madhu Reddy Yeruva, Luigi Di Biase, Jie Cheng, Vijay Swarup, Rakesh Gopinathannair, Mojtaba Olyaee, Vijay Ivaturi, Andrea Natale, Dhanunjaya Lakkireddy
OBJECTIVES: The present study describes the use of octreotide (OCT) in patients with atrial fibrillation (AF) receiving oral anticoagulation (OAC) who have gastrointestinal (GI) bleeding related to arteriovenous malformations (AVMs), as well as its effect on OAC tolerance and subsequent rebleeding. BACKGROUND: AVMs cause significant GI bleeding, especially in patients with AF who are receiving OAC for stroke prevention. OCT has been shown to minimize recurrent GI bleeds related to AVMs...
December 11, 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759668/incidence-characteristics-and-clinical-course-of-device-related-thrombus-after-watchman-left-atrial-appendage-occlusion-device-implantation-in-atrial-fibrillation-patients
#8
Shunsuke Kubo, Yukiko Mizutani, Krissada Meemook, Yoshifumi Nakajima, Asma Hussaini, Saibal Kar
OBJECTIVES: This study investigated characteristics and clinical impact of device-related thrombus formation after Watchman device implantation in atrial fibrillation (AF) patients. BACKGROUND: Left atrial appendage occlusion using the Watchman device is an effective alternative to anticoagulation for stroke prevention in AF patients. However, device-related thrombus formation remains an important concern after Watchman implantation. METHODS: From 2006 to 2014, 119 consecutive AF patients underwent Watchman implantation...
December 11, 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759665/thoracoscopic-left-atrial-appendage-occlusion-we-can-do-it-now-should-we
#9
EDITORIAL
Richard Whitlock, Sarah MacIsaac, Stuart Connolly
No abstract text is available yet for this article.
December 11, 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759664/angiographic-efficacy-of-the-atriclip-left-atrial-appendage-exclusion-device-placed-by-minimally-invasive-thoracoscopic-approach
#10
Christopher R Ellis, Sam G Aznaurov, Neel J Patel, Jennifer R Williams, Kim Lori Sandler, Steven J Hoff, Stephen K Ball, S Patrick Whalen, John Jeffrey Carr
OBJECTIVES: This study sought to assess long-term left atrial appendage (LAA) closure efficacy of the Atriclip applied via totally thoracoscopic (TT) approach with computed tomographic angiography. BACKGROUND: LAA closure is associated with a low risk for atrial fibrillation-related embolic stroke. The Atriclip exclusion device allows epicardial LAA closure, avoiding the need for post-operative oral anticoagulation. Previous data with Atriclip during open chest procedures show a high efficacy rate of closure >95%...
December 11, 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759616/spatial-relationships-of-complex-fractionated-atrial-electrograms-and-continuous-electrical-activity-to-focal-electrical-sources-implications-for-substrate-ablation-in-human-atrial-fibrillation
#11
Simon Kochhäuser, Atul Verma, Rupin Dalvi, Adrian Suszko, Pouria Alipour, Prashanthan Sanders, Jean Champagne, Laurent Macle, Girish M Nair, Hugh Calkins, David J Wilber, Vijay S Chauhan
OBJECTIVES: This study sought to evaluate the spatial relationships of focal electrical sources (FSs) to complex fractionated atrial electrograms (CFAE) and continuous electrical activity (CEA). BACKGROUND: Fractionated atrial electrograms have been associated with atrial fibrillation (AF) drivers in computational studies and represent ablation targets in the management of persistent AF. METHODS: We included a subset of 66 patients (age: 63 [56, 67] years, 69% persistent AF) with electroanatomic data from the SELECT AF (Selective complex fractionated atrial electrograms targeting for atrial fibrillation) randomized control trial that compared the efficacy of CFAE with CEA ablation in AF patients undergoing pulmonary vein antral ablation...
November 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759547/extensive-endothelialization-or-thrombus-related-to-new-generation-left-atrial-appendage-occluders
#12
Erwan Salaun, Jean-Claude Deharo, Gilbert Habib, Frederic Franceschi
No abstract text is available yet for this article.
July 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29755939/an-original-management-of-focal-atrial-tachycardia-originating-from-a-giant-left-atrial-appendage
#13
Stéphane Combes, Jean Paul Albenque, Nicolas Combes, Serge Boveda, Christelle Cardin, Vlad Ciobotaru, Issam Abouliatim
No abstract text is available yet for this article.
April 2018: HeartRhythm Case Reports
https://www.readbyqxmd.com/read/29755850/three-dimensional-printing-and-cell-therapy-for-wound-repair
#14
REVIEW
Sylvia van Kogelenberg, Zhilian Yue, Jeremy N Dinoro, Christopher S Baker, Gordon G Wallace
Significance: Skin tissue damage is a major challenge and a burden on healthcare systems, from burns and other trauma to diabetes and vascular disease. Although the biological complexities are relatively well understood, appropriate repair mechanisms are scarce. Three-dimensional bioprinting is a layer-based approach to regenerative medicine, whereby cells and cell-based materials can be dispensed in fine spatial arrangements to mimic native tissue. Recent Advances: Various bioprinting techniques have been employed in wound repair-based skin tissue engineering, from laser-induced forward transfer to extrusion-based methods, and with the investigation of the benefits and shortcomings of each, with emphasis on biological compatibility and cell proliferation, migration, and vitality...
May 1, 2018: Advances in Wound Care
https://www.readbyqxmd.com/read/29755025/can-elongation-of-the-ileum-by-epiploic-appendagitis-result-in-acute-abdomen
#15
Doğan Yıldırım, Ahmet Kocakuşak, Adnan Hut, Mikail Çakır
No abstract text is available yet for this article.
May 2018: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/29754931/percutaneous-left-atrial-appendage-closure-with-complex-anatomy-by-using-the-staged-kissing-watchman-technology-with-double-devices
#16
Lisheng Jiang, Erich Duenninger, Manuela Muenzel, Xin Xue, Adam Fazakas, Thorsten Keil, Jiangtao Yu
BACKGROUND: Left atrial appendage closure (LAAC) is an efficient alternative of oral anticoagulation to prevent stroke in patients with non-valvular atrial fibrillation (NVAF). Due to complexities of LAA anatomy, a complete closure may not always be obtained with a single device. The aim of this study was to evaluate the feasibility and safety of the staged 'kissing-Watchman' technology to occlude the LAA with complex anatomy. METHODS: In our center, among 300 cases underwent LAAC with Watchman device from February 2012 to December 2016, 7 complex LAAs were implanted double devices using the staged 'kissing-Watchman' technology...
May 4, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29754808/long-term-event-reduction-after-left-atrial-appendage-closure-results-of-the-iberian-registry-ii
#17
José R López-Mínguez, Juan M Nogales-Asensio, Eduardo Infante De Oliveira, Vasco De Gama Ribeiro, Rafael Ruiz-Salmerón, Dabit Arzamendi-Aizpurua, Marco Costa, Hipólito Gutiérrez-García, José Antonio Fernández-Díaz, Victoria Martín-Yuste, Juan Carlos Rama-Merchán, Raúl Moreno-Gómez, Amparo Benedicto-Buendía, Andrés Íñiguez-Romo
INTRODUCTION AND OBJECTIVES: Many patients with nonvalvular atrial fibrillation are still left without protection due to a contraindication for anticoagulants. This study aimed to establish the occurrence of stroke and major bleeding events in patients with nonvalvular atrial fibrillation and left atrial appendage closure with long-term follow-up and to explore the factors associated with higher long-term mortality. METHODS: Analysis of a multicenter single cohort prospectively recruited from 2009 to 2015...
May 10, 2018: Revista Española de Cardiología
https://www.readbyqxmd.com/read/29752916/giant-left-atrial-appendage-aneurysm-a-rare-entity
#18
Rajlakshmi Das, Lalit Kapoor, Somnath Ganguly, Arupratan Maity, Saibal RoyChowdhury, Pradeep Narayan
No abstract text is available yet for this article.
May 9, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29752490/motor-innervation-pattern-of-labral-muscles-of-locusta-migratoria
#19
Abid Mahmood Alvi, Peter Bräunig
The current study investigates the motor innervation pattern of labral muscles in the adult locust and tries to interpret the results in the light of the hypothesis that the labrum phylogenetically developed by the fusion of paired appendages associated with the intercalary segment. Using Neurobiotin™ as a retrograde neuronal tracer, specific motor nerves or individual labral muscles were stained. Results show that the labral muscles receive innervation from tritocerebrum and suboesophageal ganglion. The axons of many motor neurons use three different pathways to cross the midline in the periphery to innervate ipsi- and contralateral muscles...
May 12, 2018: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/29752398/device-related-thrombus-after-left-atrial-appendage-closure-incidence-predictors-and-outcomes
#20
Srinivas R Dukkipati, Saibal Kar, David R Holmes, Shephal K Doshi, Vijendra Swarup, Douglas N Gibson, Brijeshwar Maini, Nicole T Gordon, Michael L Main, Vivek Y Reddy
Background -In patients with atrial fibrillation (AF), left atrial appendage closure (LAAC) with the Watchman device prevents thromboembolism from the LAA; however, thrombus may form on the left atrial face of the device, and then potentially embolize. Herein, we studied the incidence, predictors and clinical outcome of device-related thrombus (DRT) using a large series of clinical trial cohorts of patients undergoing Watchman implantation. Methods -We studied the device arms of 4 prospective FDA trials: PROTECT-AF (n=463); PREVAIL (n=269); CAP (n=566); CAP2 (n=578)...
May 11, 2018: Circulation
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