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Focal Ablation

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https://www.readbyqxmd.com/read/29786069/ve-cadherin-promotes-vasculogenic-mimicry-by-modulating-kaiso-dependent-gene-expression
#1
Daniel Delgado-Bellido, Mónica Fernández-Cortés, María Isabel Rodríguez, Santiago Serrano-Sáenz, Arkaitz Carracedo, Angel Garcia-Diaz, F Javier Oliver
Aberrant extra-vascular expression of VE-cadherin (VEC) has been observed in metastasis associated with vasculogenic mimicry (VM); however, the ultimate reason why non-endothelial VEC favors the acquisition of this phenotype is not established. In this study, we show that human malignant melanoma cells have a constitutively high expression of phoshoVEC (pVEC) at Y658; pVEC is a target of focal adhesion kinase (FAK) and forms a complex with p120-catenin and the transcriptional repressor kaiso in the nucleus...
May 21, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29770311/-super-active-surveillance-mri-ultrasound-fusion-biopsy-and-ablation-for-less-invasive-management-of-prostate-cancer
#2
REVIEW
Jonathan B Bloom, Samuel A Gold, Graham R Hale, Kareem N Rayn, Vikram K Sabarwal, Ivane Bakhutashvili, Vladimir Valera, Baris Turkbey, Peter A Pinto, Bradford J Wood
Multiparametric magnetic resonance imaging (mpMRI) of the prostate has allowed clinicians to better visualize and target suspicious lesions during biopsy. Targeted prostate biopsies give a more accurate representation of the true cancer volume and stage so that appropriate treatment or active surveillance can be selected. Advances in technology have led to the development of MRI and ultrasound fusion platforms used for targeted biopsies, monitoring cancer progression, and more recently for the application of focal therapy...
April 2018: Gland Surgery
https://www.readbyqxmd.com/read/29762594/flexible-binary-phase-photon-sieves-on-polyimide-substrates-by-laser-ablation
#3
Matthew N Julian, David G MacDonnell, Mool C Gupta
A binary phase diffractive optical element photon sieve is fabricated by direct laser ablation of a thin, flexible polyimide substrate with a nanosecond-pulsed ultraviolet laser. The binary phase photon sieve operates at 633 nm and was designed with 19 rings and a focal length of 400 mm. The total time to fabricate the photon sieves was tens of seconds. The surface properties of the laser-processed areas are examined, and the optical performance of the photon sieve is characterized and compared to FDTD simulations...
May 15, 2018: Optics Letters
https://www.readbyqxmd.com/read/29759790/ablation-of-a-unique-focal-ventricular-tachycardia-in-repaired-truncus-arteriosus
#4
Ashish N Doshi, Bradley C Clark, Charles I Berul
No abstract text is available yet for this article.
August 2017: JACC. Clinical Electrophysiology
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
#5
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/29759616/spatial-relationships-of-complex-fractionated-atrial-electrograms-and-continuous-electrical-activity-to-focal-electrical-sources-implications-for-substrate-ablation-in-human-atrial-fibrillation
#6
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/29753943/characterization-of-drivers-maintaining-atrial-fibrillation-correlation-with-markers-of-rapidity-and-organization-on-spectral-analysis
#7
Shohreh Honarbakhsh, Richard J Schilling, Rui Providencia, Emily Keating, Anthony Chow, Simon Sporton, Martin Lowe, Mark J Earley, Pier D Lambiase, Ross J Hunter
BACKGROUND: Better characterization of drivers in atrial fibrillation (AF) may facilitate their identification. OBJECTIVES: Demonstrate that certain driver characteristics are associated with greater mechanistic importance in maintaining AF. METHODS: Patients had persistent AF mapped using the CARTOFINDER system with a 64-pole basket catheter to identify and ablate drivers with rotational or focal activity following pulmonary vein isolation...
April 19, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29744616/identification-of-active-atrial-fibrillation-sources-and-their-discrimination-from-passive-rotors-using-electrographical-flow-mapping
#8
Barbara Bellmann, Tina Lin, Peter Ruppersberg, Marit Zettwitz, Selma Guttmann, Verena Tscholl, Patrick Nagel, Mattias Roser, Ulf Landmesser, Andreas Rillig
BACKGROUND: The optimal ablation approach for the treatment of persistent atrial fibrillation (AF) is still under debate; however, the identification and elimination of AF sources is thought to play a key role. Currently available technologies for the identification of AF sources are not able to differentiate between active rotors or focal impulse (FI) and passive circular turbulences as generated by the interaction of a wave front with a functional obstacle such as fibrotic tissue. OBJECTIVES: This study introduces electrographic flow (EGF) mapping as a novel technology for the identification and characterization of AF sources in humans...
May 9, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29743538/which-technology-to-select-for-primary-focal-treatment-of-prostate-cancer-european-section-of-urotechnology-esut-position-statement
#9
REVIEW
Roman Ganzer, Vinodh Kumar Adithyaa Arthanareeswaran, Hashim U Ahmed, Andrea Cestari, Pascal Rischmann, Georg Salomon, Dogu Teber, Evangelos Liatsikos, Jens-Uwe Stolzenburg, Eric Barret
BACKGROUND: With growing interest in focal therapy (FT) of prostate cancer (PCa) there is an increasing armamentarium of treatment modalities including high-intensity focused ultrasound (HIFU), cryotherapy, focal laser ablation (FLA), irreversible electroporation (IRE), vascular targeted photodynamic therapy (VTP), focal brachytherapy (FBT) and stereotactic ablative radiotherapy (SABR). Currently there are no clear recommendations as to which of these technologies are appropriate for individual patient characteristics...
May 9, 2018: Prostate Cancer and Prostatic Diseases
https://www.readbyqxmd.com/read/29743170/clinical-implications-of-ablation-of-drivers-for-atrial-fibrillation-a-systematic-review-and-meta-analysis
#10
Tina Baykaner, Albert J Rogers, Gabriela L Meckler, Junaid Zaman, Rachita Navara, Miguel Rodrigo, Mahmood Alhusseini, Christopher A B Kowalewski, Mohan N Viswanathan, Sanjiv M Narayan, Paul Clopton, Paul J Wang, Paul A Heidenreich
BACKGROUND: The outcomes from pulmonary vein isolation (PVI) for atrial fibrillation (AF) are suboptimal, but the benefits of additional lesion sets remain unproven. Recent studies propose ablation of AF drivers improves outcomes over PVI, yet with conflicting reports in the literature. We undertook a systematic literature review and meta-analysis to determine outcomes from ablation of AF drivers in addition to PVI or as a stand-alone procedure. METHODS: Database search was done using the terms atrial fibrillation and ablation or catheter ablation and driver or rotor or focal impulse or FIRM (Focal Impulse and Rotor Modulation)...
May 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29732567/catheter-ablation-of-papillary-muscle-arrhythmias-implications-of-mitral-valve-prolapse-and-systolic-dysfunction
#11
Adam Lee, Christian Hamilton Craig, Russell Denman, Haris M Haqqani
BACKGROUND: The left ventricular papillary muscles are important components of the mitral valve apparatus. Catheter ablation of ventricular arrhythmias from these sites is challenging. We aim to describe the association between LV papillary muscle ventricular arrhythmias (VAs) and mitral valve prolapse (MVP), and to determine the outcomes of ablation in these patients with a focus on those with MVP and cardiomyopathy. METHODS: 152 patients underwent 170 consecutive procedures for ablation of focal VAs...
May 6, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29731502/idiopathic-ventricular-premature-contraction-and-ventricular-tachycardia-distribution-of-the-origin-diagnostic-algorithm-and-catheter-ablation
#12
Yoshinori Kobayashi
Idiopathic ventricular premature contractions (VPCs), defined as VPCs in the absence of obvious structural heart disease, are one of the common types of arrhythmia in clinical practice. They are sometimes complicated with non-sustained ventricular tachycardia (VT), and/or sustained VT with almost same QRS morphology in 12 leads ECG. Idiopathic VT (IVT) commonly occurs by focal mechanisms and the origins are distributed in a variety of sites in both ventricles. In this article, the clinical characteristics of IVT/IVPCs, the diagnostic algorithm, and how to ablate them will be reviewed...
2018: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/29728077/neuropilin-1-promotes-the-oncogenic-tenascin-c-integrin-%C3%AE-3-pathway-and-modulates-chemoresistance-in-breast-cancer-cells
#13
Adviti Naik, Aida Al-Yahyaee, Nada Abdullah, Juda-El Sam, Noura Al-Zeheimi, Mahmoud W Yaish, Sirin A Adham
BACKGROUND: Neuropilin-1 (NRP-1), a non-tyrosine kinase glycoprotein receptor, is associated with poor prognosis breast cancer, however transcriptomic changes triggered by NRP-1 overexpression and its association with chemoresistance in breast cancer have not yet been explored. METHODS: BT-474 NRP-1 variant cells were generated by stable overexpression of NRP-1 in the BT-474 breast cancer cell line. RNA sequencing and qRT-PCR were conducted to identify differentially expressed genes...
May 5, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29721014/direct-photocoagulation-guided-by-merged-retinal-images-for-the-treatment-of-focal-diabetic-macular-edema
#14
Yoshihiro Takamura, Takehiro Matsumura, Shogo Arimura, Makoto Gozawa, Masakazu Morioka, YutakaYamada, Masaru Inatani
Purpose: To introduce a novel laser photocoagulation (PC) protocol named merged image-guided PC (MIG-PC), which included merging the images of the fundus, optical coherence tomography (OCT) map, and fluorescein angiography (FA). We compared the anatomical and functional results between MIG-PC and FA-guided PC (FG-PC) for the treatment of focal diabetic macular edema (DME). Method: We examined the treatment outcomes in 27 consecutive eyes treated with MIG-PC compared with 28 matched eyes treated with FG-PC...
2018: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29719997/fluorodeoxyglucose-positron-emission-tomography-for-detection-of-tumor-recurrence-following-radiofrequency-ablation-in-retrospective-cohort-of-stage-i-lung-cancer
#15
Yingbing Wang, Michael Lanuti, Adam Bernheim, Jo-Anne O Shepard, Amita Sharma
PURPOSE: The goal of this study was to define patterns for tumor recurrence on PET following RFA, compare time to imaging recurrence by PET versus CT, evaluate whether pre-treatment tumor uptake predicts recurrence and propose an optimal post-RFA surveillance strategy. MATERIALS AND METHODS: A retrospective cohort study was performed of biopsy confirmed primary stage I lung cancers treated with RFA. FDG PET and near contemporaneous diagnostic CT imaging pre-ablation, within 30 days post-ablation, and beyond 6 months were independently and retrospectively evaluated for features supportive of recurrence...
May 3, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29717782/targeting-an-epicardial-endocardial-breakthrough-in-a-case-with-an-intractable-common-atrial-flutter-using-ultra-high-resolution-3-dimensional-mapping
#16
Satoshi Higuchi, Morio Shoda, Yuji Iwanami, Daigo Yagishita, Koichiro Ejima, Nobuhisa Hagiwara
The recent development of high-density high-spatial resolution 3-dimensional mapping has provided detailed information for understanding complicated atrial activation patterns at a level not previously possible. Using this technology, we report a case with recurrent common atrial flutter, demonstrating the presence of a bridging epicardial fiber that traveled across the previous cavotricuspid isthmus ablation lesion with apparent epicardial-endocardial breakthrough (EEB) sites located on both sides of the ablation line...
May 2, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29696431/magnetic-resonance-guided-focused-high-frequency-ultrasound-ablation-for-focal-therapy-in-prostate-cancer-phase-1-trial
#17
Sangeet Ghai, Nathan Perlis, Uri Lindner, Eugen Hlasny, Masoom A Haider, Antonio Finelli, Alexandre R Zlotta, Girish S Kulkarni, Theodorus H van der Kwast, Stuart A McCluskey, Walter Kucharczyk, John Trachtenberg
OBJECTIVES: To evaluate the feasibility and safety of focal therapy for low-intermediate risk prostate cancer (PCa) with magnetic resonance-guided high frequency focused ultrasound (MRgFUS) METHODS: This IRB-approved phase 1 prospective study enrolled eight patients with prostate specific antigen (PSA) ≤ 10 ng/ml, ≤ cT2a and Gleason score ≤ 7 (4 + 3) disease following informed consent. Under MRI guidance, focused high frequency ultrasound energy was delivered to ablate the target tissue...
April 25, 2018: European Radiology
https://www.readbyqxmd.com/read/29688296/successful-catheter-ablation-of-a-focal-atrial-tachycardia-originating-from-the-coronary-sinus-ostium-in-a-patient-with-a-history-of-fontan-conversion-and-dextrocardia
#18
Takumi Yamada, Yung R Lau
No abstract text is available yet for this article.
April 20, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29664243/new-technologies-and-techniques-for-prostate-cancer-focal-therapy-a-review-of-the-current-literature
#19
Estefanía Linares-Espinós, Arie Carneiro, Juan I Martínez-Salamanca, Fernando Bianco, Adalberto Castro-Alfaro, Xavier Cathelineau, Massimo Valerio, Rafael Sanchez-Salas
BACKGROUND: The aim of this study was to review the oncological and functional outcomes of new and established primary focal treatments (FT) for localized prostate cancer (PCa). METHODS: We performed a systematic search of published studies on FT for localized PCa using electronic databases (Medline and Embase). These studies included reports on hemiablation, focal ablation and target-ablation. We excluded salvage focal therapy studies and limited the search to those with a minimum of 12 months of follow-up...
April 16, 2018: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/29662944/combined-blockade-of-interleukin-1%C3%AE-and-1%C3%AE-signaling-protects-mice-from-cognitive-dysfunction-after-traumatic-brain-injury
#20
Elizabeth A Newell, Brittany P Todd, Jolonda Mahoney, Andrew A Pieper, Polly J Ferguson, Alexander G Bassuk
Diffuse activation of interleukin-1 inflammatory cytokine signaling after traumatic brain injury (TBI) elicits progressive neurodegeneration and neuropsychiatric dysfunction, and thus represents a potential opportunity for therapeutic intervention. Although interleukin (IL)-1α and IL-1β both activate the common type 1 IL-1 receptor (IL-1RI), they manifest distinct injury-specific roles in some models of neurodegeneration. Despite its potential relevance to treating patients with TBI, however, the individual contributions of IL-1α and IL-1β to TBI-pathology have not been previously investigated...
March 2018: ENeuro
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