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Circulation

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https://www.readbyqxmd.com/read/28802250/a-population-based-study-of-abdominal-aortic-aneurysm-treatment-in-finland-2000-2014
#1
Matti T Laine, Sani J Laukontaus, Reijo Sund, Pekka S Aho, Ilkka Kantonen, Anders Albäck, Maarit Venermo
Background -In the event of rupture of an abdominal aortic aneurysm (AAA), mortality is very high. AAA prevalence and incidence of ruptures has been reported to be decreasing. The treatment of AAA has also undergone a change in recent decades with a shift towards endovascular aneurysm repair (EVAR). Our aim was to evaluate how these changes have affected the elective and emergency treatment of AAA and their results in Finland. Methods -All patients treated for AAA in Finland, a country with a population of 5...
August 11, 2017: Circulation
https://www.readbyqxmd.com/read/28802249/high-resolution-mapping-of-chromatin-conformation-in-cardiac-myocytes-reveals-structural-remodeling-of-the-epigenome-in-heart-failure
#2
Manuel Rosa-Garrido, Douglas J Chapski, Anthony D Schmitt, Todd H Kimball, Elaheh Karbassi, Emma Monte, Enrique Balderas, Matteo Pellegrini, Tsai-Ting Shih, Elizabeth Soehalim, David A Liem, Peipei Ping, Niels J Galjart, Shuxun Ren, Yibin Wang, Bing Ren, Thomas M Vondriska
Background -Cardiovascular disease is associated with epigenomic changes in the heart, however the endogenous structure of cardiac myocyte chromatin has never been determined. Methods -To investigate the mechanisms of epigenomic function in the heart, genome-wide chromatin conformation capture (Hi-C) and DNA sequencing were performed in adult cardiac myocytes following development of pressure overload-induced hypertrophy. Mice with cardiac-specific deletion of CTCF (a ubiquitous chromatin structural protein) were generated to explore the role of this protein in chromatin structure and cardiac phenotype...
August 11, 2017: Circulation
https://www.readbyqxmd.com/read/28794002/klf4-regulation-of-ch25h-and-lxr-mitigates-atherosclerosis-susceptibility
#3
Zhao Li, Marcy Martin, Jin Zhang, Hsi-Yuan Huang, Liang Bai, Jiao Zhang, Jian Kang, Ming He, Jie Li, Mano R Maurya, Shakti Gupta, Guangjin Zhou, Panjamaporn Sangwung, Yong-Jiang Xu, Ting Lei, Hsien-Da Huang, Mohit Jain, Mukesh K Jain, Shankar Subramaniam, John Y-J Shyy
Background -Atherosclerosis is a multifaceted inflammatory disease involving cells in the vascular wall [e.g., endothelial cells (ECs)] as well as circulating and resident immunogenic cells (e.g., monocytes/macrophages). Acting as a ligand for liver X receptor (LXR), but an inhibitor of sterol regulatory element binding protein 2 (SREBP2), 25-hydroxycholesterol (25-HC) and its catalyzing enzyme cholesterol-25-hydroxylase (Ch25h) are important in regulating cellular inflammatory status and cholesterol biosynthesis in both ECs and monocytes/macrophages...
August 9, 2017: Circulation
https://www.readbyqxmd.com/read/28794001/randomized-comparison-of-ridaforolimus-eluting-and-zotarolimus-eluting-coronary-stents-in-patients-with-coronary-artery-disease-primary-results-from-the-bionics-trial
#4
David E Kandzari, Pieter C Smits, Michael P Love, Ori Ben-Yehuda, Shmuel Banai, Simon D Robinson, Michael Jonas, Ran Kornowski, Rodrigo Bagur, Andres Iniguez, Haim D Danenberg, Robert L Feldman, Rajiv Jauhar, Harish Chandna, Manish A Parikh, Gidon Y Perlman, Mercedes Balcells, Peter M Markham, Melek Ozgu Ozan, Philippe Genereux, Elazer Edelman, Martin B Leon, Gregg W Stone
Background -The safety and efficacy of a novel cobalt alloy-based coronary stent with a durable elastomeric polymer eluting the antiproliferative agent ridaforolimus for treatment of patients with coronary artery disease is undetermined. Methods -A prospective, international 1:1 randomized trial was conducted to evaluate in a noninferiority design the relative safety and efficacy of ridaforolimus-eluting stents (RES) and slow-release zotarolimus-eluting stents (ZES) among 1,919 patients at 76 centers undergoing percutaneous coronary intervention...
August 9, 2017: Circulation
https://www.readbyqxmd.com/read/28784624/methodological-standards-for-meta-analyses-and-qualitative-systematic-reviews-of-cardiac-prevention-and-treatment-studies-a-scientific-statement-from-the-american-heart-association
#5
REVIEW
Goutham Rao, Francisco Lopez-Jimenez, Jack Boyd, Frank D'Amico, Nefertiti H Durant, Mark A Hlatky, George Howard, Katherine Kirley, Christopher Masi, Tiffany M Powell-Wiley, Anthony E Solomonides, Colin P West, Jennifer Wessel
Meta-analyses are becoming increasingly popular, especially in the fields of cardiovascular disease prevention and treatment. They are often considered to be a reliable source of evidence for making healthcare decisions. Unfortunately, problems among meta-analyses such as the misapplication and misinterpretation of statistical methods and tests are long-standing and widespread. The purposes of this statement are to review key steps in the development of a meta-analysis and to provide recommendations that will be useful for carrying out meta-analyses and for readers and journal editors, who must interpret the findings and gauge methodological quality...
August 7, 2017: Circulation
https://www.readbyqxmd.com/read/28778947/disturbed-flow-promotes-arterial-stiffening-through-thrombospondin-1-tsp-1
#6
Chan Woo Kim, Anastassia Pokutta-Paskaleva, Sandeep Kumar, Lucas H Timmins, Andrew D Morris, Dong-Won Kang, Sidd Dalal, Tatiana Chadid, Katie M Kuo, Julia Raykin, Haiyan Li, Hiromi Yanagisawa, Rudolph L Gleason, Hanjoong Jo, Luke P Brewster
Background -Arterial stiffness and wall shear stress are powerful determinants of cardiovascular health, and arterial stiffness is associated with increased cardiovascular mortality. Low and oscillatory wall shear stress, termed disturbed flow (d-flow), promotes atherosclerotic arterial remodeling, but the relationship between d-flow and arterial stiffness is not well understood. The objective of this study was to define the role of d-flow on arterial stiffening and discover the relevant signaling pathways by which d-flow stiffens arteries...
August 4, 2017: Circulation
https://www.readbyqxmd.com/read/28778946/subclinical-atrial-fibrillation-in-older-patients
#7
Jeffrey S Healey, Marco Alings, Andrew C Ha, Peter Leong-Sit, David H Birnie, Jacob J de Graaf, Michel Freericks, Atul Verma, Jia Wang, Darryl Leong, Hisham Dokainish, Francois Philippon, Walid Barake, William F McIntyre, Kim D Simek, Michael D Hill, Shamir R Mehta, Mark Carlson, Frank Smeele, A Shekhar Pandey, Stuart J Connolly
Background -Long-term continuous electrocardiographic monitoring shows a substantial prevalence of asymptomatic, subclinical atrial fibrillation (SCAF) in patients with pacemakers and patients with cryptogenic stroke. It is unknown if SCAF is also common in other patients without these conditions. Methods -We implanted sub-cutaneous electrocardiographic monitors (St. Jude CONFIRM-AF) in patients ≥ 65 years attending cardiovascular or neurology outpatient clinics if they had no history of atrial fibrillation (AF) but did have any of: CHA2DS2-VASc score of ≥ 2, sleep apnea, or body mass index > 30...
August 4, 2017: Circulation
https://www.readbyqxmd.com/read/28778945/experimental-modeling-supports-a-role-for-mybp-hl-as-a-novel-myofilament-component-in-arrhythmia-and-dilated-cardiomyopathy
#8
David Y Barefield, Megan J Puckelwartz, Ellis Y Kim, Lisa D Wilsbacher, Andy H Vo, Emily A Waters, Judy U Earley, Michele Hadhazy, Lisa M Dellefave-Castillo, Lorenzo L Pesce, Elizabeth M McNally
Background -Cardiomyopathy and arrhythmias are under significant genetic influence. Here, we studied a family with dilated cardiomyopathy and associated conduction system disease in whom prior clinical cardiac gene panel testing was unrevealing. Methods -Whole genome sequencing and induced pluripotent stem cells were used to examine a family with dilated cardiomyopathy and atrial and ventricular arrhythmias. We also characterized a mouse model with heterozygous and homozygous deletion of MybphlResults -Whole genome sequencing identified a premature stop codon, R255X, in the MYBPHL gene encoding myosin-binding protein-H like (MyBP-HL), a novel member of the myosin binding protein family...
August 4, 2017: Circulation
https://www.readbyqxmd.com/read/28778944/histone-methyltransferase-g9a-is-required-for-cardiomyocyte-homeostasis-and-hypertrophy
#9
Roberto Papait, Simone Serio, Christina Pagiatakis, Francesca Rusconi, Pierluigi Carullo, Marta Mazzola, Nicolò Salvarani, Michele Miragoli, Gianluigi Condorelli
Background -Correct gene expression programming of the cardiomyocyte underlies the normal functioning of the heart. Alterations to this can lead to the loss of cardiac homeostasis, triggering heart dysfunction. Though the role of some histone methyltransferases in establishing the transcriptional program of post-natal cardiomyocytes during heart development has been shown, the function of this class of epigenetic enzyme is largely unexplored in the adult heart. In this study, we investigated the role of G9a/Ehmt2-a histone methyltransferase that defines a repressive epigenetic signature-in defining the transcriptional program for cardiomyocyte homeostasis and cardiac hypertrophy...
August 4, 2017: Circulation
https://www.readbyqxmd.com/read/28775077/chronic-rejection-of-cardiac-allografts-is-associated-with-increased-lymphatic-flow-and-cellular-trafficking
#10
Lindsey A Edwards, Anna K Nowocin, Nazila V Jafari, Lucy Meader, Kathryn Brown, Aurélien Sarde, Carolyn Lam, Alex Murray, Wilson Wong
Background -Cardiac transplantation is an excellent treatment for end-stage heart disease. However, rejection of the donor graft, particularly by chronic rejection leading to cardiac allograft vasculopathy, remains a major cause of graft loss. The lymphatic system plays a crucial role in the alloimmune response, facilitating trafficking of antigen presenting cells (APCs) to draining lymph nodes (dLN). The encounter of APCs with T lymphocytes in secondary lymphoid organs is essential for the initiation of alloimmunity...
August 3, 2017: Circulation
https://www.readbyqxmd.com/read/28754835/in-vivo-functional-selection-identifies-cardiotrophin-1-as-a-cardiac-engraftment-factor-for-mesenchymal-stromal-cells
#11
Francesca Bortolotti, Giulia Ruozi, Antonella Falcione, Sara Doimo, Matteo Dal Ferro, Pierluigi Lesizza, Lorena Zentilin, Lawrence Banks, Serena Zacchigna, Mauro Giacca
Background -Transplantation of cells into the infarcted heart has significant potential to improve myocardial recovery; however, low efficacy of cell engraftment still limits therapeutic benefit. Here we describe a method for the unbiased, in vivo selection of cytokines that improve mesenchymal stromal cell (MSC) engraftment into the heart in both normal conditions and after myocardial infarction. Methods -An arrayed library of 80 secreted factors, including most of the currently known interleukins and chemokines, were individually cloned into adeno-associated viral (AAV) vectors...
July 28, 2017: Circulation
https://www.readbyqxmd.com/read/28733351/multi-cellular-transcriptional-analysis-of-mammalian-heart-regeneration
#12
Gregory A Quaife-Ryan, Choon Boon Sim, Mark Ziemann, Antony Kaspi, Haloom Rafehi, Mirana Ramialison, Assam El-Osta, James E Hudson, Enzo R Porrello
Background -The inability of the adult mammalian heart to regenerate following injury represents a major barrier in cardiovascular medicine. In contrast, the neonatal mammalian heart retains a transient capacity for regeneration, which is lost shortly after birth. Defining the molecular mechanisms that govern regenerative capacity in the neonatal period remains a central goal in cardiac biology. Here, we assemble a transcriptomic framework of multiple cardiac cell populations during postnatal development and following injury, which enables comparative analyses of the regenerative (neonatal) versus non-regenerative (adult) state for the first time...
July 21, 2017: Circulation
https://www.readbyqxmd.com/read/28729250/stellarex-drug-coated-balloon-for-treatment-of-femoropopliteal-disease-12-month-outcomes-from-the-randomized-illumenate-pivotal-and-pharmacokinetic-studies
#13
Prakash Krishnan, Peter Faries, Khusrow Niazi, Ash Jain, Ravish Sachar, William B Bachinsky, Joseph A Cardenas, Martin Werner, Marianne Brodmann, J A Mustapha, Carlos I Mena-Hurtado, Michael R Jaff, Andrew H Holden, Sean P Lyden
Background -Drug-coated balloons (DCB) are a predominant revascularization therapy for symptomatic femoropopliteal artery disease. Due to differences in excipients, paclitaxel dose and coating morphologies, varying clinical outcomes have been observed with different DCBs. We report the results of two studies investigating the pharmacokinetic (PK) and clinical outcomes of a new DCB to treat femoropopliteal disease. Methods -In the ILLUMENATE Pivotal Study, 300 symptomatic patients (Rutherford class 2-4), were randomized to DCB (N=200) or standard angioplasty (PTA) (N=100)...
July 20, 2017: Circulation
https://www.readbyqxmd.com/read/28724752/the-fluid-mechanics-of-transcatheter-heart-valve-leaflet-thrombosis-in-the-neo-sinus
#14
Prem A Midha, Vrishank Raghav, Rahul Sharma, Jose F Condado, Ikechukwu U Okafor, Tanya Rami, Gautam Kumar, Vinod H Thourani, Hasan Jilaihawi, Vasilis Babaliaros, Raj R Makkar, Ajit P Yoganathan
Background -Transcatheter heart valve (THV) thrombosis has been increasingly reported. In these studies, thrombus quantification has been based on 2D assessment of a 3D phenomenon. Methods -Post-procedural four-dimensional, volume-rendered CT (4DCT) data of CoreValve, Evolut R, and SAPIEN 3 transcatheter aortic valve replacement (TAVR) patients enrolled in the RESOLVE trial were included in this analysis. Patients on anticoagulation were excluded. SAPIEN 3 and CoreValve/Evolut R patients with and without hypo-attenuated leaflet thickening (HALT) were included in order to study differences between groups...
July 19, 2017: Circulation
https://www.readbyqxmd.com/read/28724751/tomo-seq-identifies-sox9-as-a-key-regulator-of-cardiac-fibrosis-during-ischemic-injury
#15
Grégory P A Lacraz, Jan Philipp Junker, Monika M Gladka, Bas Molenaar, Koen T Scholman, Marta Vigil-Garcia, Danielle Versteeg, Hesther de Ruiter, Marit W Vermunt, Menno P Creyghton, Manon M H Huibers, Nicolaas de Jonge, Alexander van Oudenaarden, Eva van Rooij
Background -Cardiac ischemic injury induces a pathological remodeling response, which can ultimately lead to heart failure. Detailed mechanistic insights into molecular signaling pathways relevant for different aspects of cardiac remodeling will support the identification of novel therapeutic targets. Methods -While genome-wide transcriptome analysis on diseased tissues has greatly advanced our understanding of the regulatory networks that drive pathological changes in the heart, this approach has been disadvantaged by the fact that the signals are derived from tissue homogenates...
July 19, 2017: Circulation
https://www.readbyqxmd.com/read/28720725/optical-coherence-tomography-findings-in-patients-with-coronary-stent-thrombosis-a-report-of-the-prevention-of-late-stent-thrombosis-by-an-interdisciplinary-global-european-effort-prestige-consortium
#16
Tom Adriaenssens, Michael Joner, Thea Godschalk, Nikesh Malik, Fernando Alfonso, Erion Xhepa, Dries De Cock, Kenichi Komukai, Tomohisa Tada, Javier Cuesta, Vasile Sirbu, Laurent J Feldman, Franz-Josef Neumann, Alison H Goodall, Ton Heestermans, Ian Buysschaert, Ota Hlinomaz, Ann Belmans, Walter Desmet, Jurrien M Ten Berg, Anthony H Gershlick, Steffen Massberg, Adnan Kastrati, Giulio Guagliumi, Robert Byrne
Background -Stent thrombosis (ST) is a serious complication following coronary stenting. Intravascular optical coherence tomography (OCT) may provide insights into mechanistic processes leading to ST. We performed a prospective, multicenter study to evaluate OCT findings in patients with ST. Methods -Consecutive patients presenting with ST were prospectively enrolled in a registry using a centralized telephone registration system. After angiographic confirmation of ST, OCT imaging of the culprit vessel was performed with frequency domain OCT...
July 18, 2017: Circulation
https://www.readbyqxmd.com/read/28720724/aortic-wall-inflammation-predicts-abdominal-aortic-aneurysm-expansion-rupture-and-need-for-surgical-repair
#17
The Ma Rs Study Investigators
Background -Ultrasmall superparamagnetic particles of iron oxide (USPIO) detect cellular inflammation on magnetic resonance imaging (MRI). In patients with abdominal aortic aneurysm, we assessed whether USPIO-enhanced MRI can predict aneurysm growth rates and clinical outcomes. Methods -In a prospective multicentre open-label cohort study, 342 patients with abdominal aortic aneurysm (diameter ≥40 mm) were classified by the presence of USPIO enhancement and were monitored with serial ultrasound and clinical follow-up for at least 2 years...
July 18, 2017: Circulation
https://www.readbyqxmd.com/read/28701470/effect-of-ferric-carboxymaltose-on-exercise-capacity-in-patients-with-chronic-heart-failure-and-iron-deficiency
#18
Dirk J van Veldhuisen, Piotr Ponikowski, Peter van der Meer, Marco Metra, Michael Böhm, Artem Doletsky, Adriaan A Voors, Iain C Macdougall, Stefan D Anker, Bernard Roubert, Lorraine Zakin, Alain Cohen-Solal
Background -Iron deficiency is common in patients with heart failure (HF), and is associated with reduced exercise capacity and poor outcomes. Whether correction of iron deficiency with (intravenous) ferric carboxymaltose (FCM) affects peak oxygen consumption [peak VO2], an objective measure of exercise intolerance in HF, has not been examined. Methods -We studied patients with systolic HF (left ventricular ejection fraction [LVEF] ≤45%) and mild to moderate symptoms despite optimal HF medication, Patients were randomized 1:1 to treatment with FCM for 24 weeks or standard of care...
July 12, 2017: Circulation
https://www.readbyqxmd.com/read/28701469/long-term-outcomes-and-prognostic-factors-of-complications-in-takayasu-s-arteritis-a-multicenter-study-of-318-patients
#19
Cloé Comarmond, Lucie Biard, Marc Lambert, Arsène Mekinian, Yasmina Ferfar, Jean-Emmanuel Kahn, Ygal Benhamou, Laurent Chiche, Fabien Koskas, Philippe Cluzel, Eric Hachulla, Emmanuel Messas, Matthieu Resche-Rigon, Patrice Cacoub, Tristan Mirault, David Saadoun
Background -Due to the wide variation in the course of Takayasu arteritis (TA), predicting outcome is challenging. We assess long term outcome and prognosis factors for vascular complications in patients with TA. Methods -Retrospective multicenter study of characteristics and outcomes of 318 TA patients fulfilling American College of Rheumatology and/or Ishikawa criteria were analyzed. Factors associated with event-free survival (EFS), relapse-free survival (RFS) and incidences of vascular complications were assessed...
July 12, 2017: Circulation
https://www.readbyqxmd.com/read/28698173/interferon-regulatory-factor-5-controls-necrotic-core-formation-in-atherosclerotic-lesions-by-impairing-efferocytosis
#20
Anusha N Seneviratne, Andreas O Edsfeldt, Jennifer E Cole, Christina Kassiteridi, Maarten Swart, Inhye Park, Patricia Green, Tariq E Khoyratty, David G Saliba, Michael E Goddard, Stephen N Sansom, Isabel Goncalves, Rob Krams, Irina A Udalova, Claudia Monaco
Background -Myeloid cells are central to atherosclerotic lesion development and vulnerable plaque formation. Impaired ability of arterial phagocytes to uptake apoptotic cells (efferocytosis), promotes lesion growth and establishment of a necrotic core. The transcription factor Interferon Regulatory Factor (IRF)-5 is an important modulator of myeloid function and programming. We sought to investigate whether IRF5 affects the formation and phenotype of atherosclerotic lesions. Methods -We investigated the role of IRF5 in atherosclerosis in two complementary models...
July 11, 2017: Circulation
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