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Post infarction heart failure

Shang Wang, Manmohan Singh, Thuy Tien Tran, John Leach, Salavat R Aglyamov, Irina V Larina, James F Martin, Kirill V Larin
Myocardial infarction (MI) leads to cardiomyocyte loss, impaired cardiac function, and heart failure. Molecular genetic analyses of myocardium in mouse models of ischemic heart disease have provided great insight into the mechanisms of heart regeneration, which is promising for novel therapies after MI. Although biomechanical factors are considered an important aspect in cardiomyocyte proliferation, there are limited methods for mechanical assessment of the heart in the mouse MI model. This prevents further understanding the role of tissue biomechanics in cardiac regeneration...
February 1, 2018: Biomedical Optics Express
Andrew R Kompa, Jiayu Lu, Thomas J Weller, Darren J Kelly, Henry Krum, Thomas G von Lueder, Bing H Wang
BACKGROUND: Angiotensin receptor neprilysin inhibitor (ARNi) enhances beneficial natriuretic peptides by inhibiting their breakdown through neprilysin. Although the first-in-class ARNi sacubitril/valsartan (LCZ696) reduced mortality and morbidity in heart failure (HF) with reduced ejection fraction (EF) compared to angiotensin converting enzyme inhibitor (ACEi), mechanistic data on ARNi are scarce. ARNi may be superior to ACEi in attenuating adverse cardiac remodeling and dysfunction post-myocardial infarction (MI)...
May 1, 2018: International Journal of Cardiology
Narjeet S Khurmi, Yu-Hui Chang, D Eric Steidley, Andrew L Singer, Winston R Hewitt, Kunam S Reddy, Adyr A Moss, Amit K Mathur
BACKGROUND: Cardiovascular disease (CVD) is a leading cause of post-liver transplant death, and variable care patterns may affect outcomes. We aimed to describe epidemiology and outcomes of inpatient CVD care across U.S. hospitals. METHODS: Using a merged dataset from the 2002-2011 Nationwide Inpatient Sample and the American Hospital Association Annual Survey, we evaluated liver transplant patients admitted primarily with myocardial infarction (MI), stroke (CVA), congestive heart failure (CHF), dysrhythmias, cardiac arrest (CA), or malignant hypertension...
March 15, 2018: Liver Transplantation
Peter Moritz Becher, Svenja Hinrichs, Nina Fluschnik, Jan K Hennigs, Karin Klingel, Stefan Blankenberg, Dirk Westermann, Diana Lindner
Heart failure (HF) is a leading cause of morbidity and mortality in the western world. Although optimal medical care and treatment is widely available, the prognosis of patients with HF is still poor. Toll-like receptors (TLRs) are important compartments of the innate immunity. Current studies have identified TLRs as critical mediators in cardiovascular diseases. In the present study, we investigated the involvement of TLRs and interferon (IFN) regulatory factors (IRFs) in different experimental HF models including viral myocarditis, myocardial ischemia, diabetes mellitus, and cardiac hypertrophy...
2018: PloS One
Bence Hegyi, Julie Bossuyt, Leigh G Griffiths, Rafael Shimkunas, Zana Coulibaly, Zhong Jian, Kristin N Grimsrud, Claus S Sondergaard, Kenneth S Ginsburg, Nipavan Chiamvimonvat, Luiz Belardinelli, András Varró, Julius G Papp, Piero Pollesello, Jouko Levijoki, Leighton T Izu, W Douglas Boyd, Tamás Bányász, Donald M Bers, Ye Chen-Izu
Heart failure (HF) following myocardial infarction (MI) is associated with high incidence of cardiac arrhythmias. Development of therapeutic strategy requires detailed understanding of electrophysiological remodeling. However, changes of ionic currents in ischemic HF remain incompletely understood, especially in translational large-animal models. Here, we systematically measure the major ionic currents in ventricular myocytes from the infarct border and remote zones in a porcine model of post-MI HF. We recorded eight ionic currents during the cell's action potential (AP) under physiologically relevant conditions usingself AP-clamp sequential dissection...
March 12, 2018: Proceedings of the National Academy of Sciences of the United States of America
Rocco Friebel, Katharina Hauck, Paul Aylin, Adam Steventon
OBJECTIVE: To assess trends in 30-day emergency readmission rates across England over one decade. DESIGN: Retrospective study design. SETTING: 150 non-specialist hospital trusts in England. PARTICIPANTS: 23 069 134 patients above 18 years of age who were readmitted following an initial admission (n=62 584 297) between April 2006 and February 2016. PRIMARY AND SECONDARY OUTCOMES: We examined emergency admissions that occurred within 30 days of discharge from hospital ('emergency readmissions') as a measure of healthcare quality...
March 12, 2018: BMJ Open
Serenella Castelvecchio, Ekatherina Baryshnikova, Ileana L Pina, Federico Ambrogi, Valentina Milani, Roberto Tramarin, Elena Costa, Lorenzo Menicanti
BACKGROUND: Plasma concentrations of natriuretic peptides have been shown to predict prognosis in heart failure (HF) patients with left ventricle (LV) dysfunction. It is still unclear if measurements after cardiac surgery are associated with any effect on the outcome. We aimed to prospectively investigate the longitudinal profile of serial evaluations of N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels in ischemic HF patients undergoing Surgical Ventricular Reconstruction (SVR) and how NT-proBNP levels at different time-points are associated with the outcome...
February 26, 2018: International Journal of Cardiology
Timothy D Bryson, Xiaosong Gu, Remonda M Khalil, Safa Khan, Liping Zhu, Jiang Xu, Edward Peterson, Xiao-Ping Yang, Pamela Harding
BACKGROUND: Prostaglandin E2 (PGE2 ) signals through 4 separate G-protein coupled receptor sub-types to elicit a variety of physiologic and pathophysiological effects. We recently reported that PGE2 via its EP3 receptor could reduce cardiac contractility of isolated myocytes and the working heart preparation. We thus hypothesized that there is an imbalance in the EP3/EP4 ratio towards EP3 in the failing heart and that overexpression of EP4 in a mouse model of heart failure would improve cardiac function...
March 6, 2018: Journal of Molecular and Cellular Cardiology
John Whitaker, Cory M Tschabrunn, Jihye Jang, Eran Leshem, Mark O'Neill, Warren J Manning, Elad Anter, Reza Nezafat
BACKGROUND: Myocardial infarction (MI) survivors are at risk of complications including heart failure and malignant arrhythmias. PURPOSE: We undertook serial imaging of swine following MI with the aim of characterizing the longitudinal left ventricular (LV) remodeling in a translational model of ischemia-reperfusion-mediated MI. ANIMAL MODEL: Eight Yorkshire swine underwent mid left anterior descending coronary artery balloon occlusion to create an ischemia-reperfusion experimental model of MI...
March 9, 2018: Journal of Magnetic Resonance Imaging: JMRI
Tian Li, Yafeng Shen, Li Su, Xiaoyan Fan, Fangxing Lin, Xuting Ye, Dianer Ding, Ying Tang, Yang Yongji, Changhai Lei, Shi Hu
Post-ischemic heart failure is a major cause of death worldwide. Reperfusion of infarcted heart tissue after myocardial infarction has been an important medical intervention to improve outcomes. However, disturbances in Ca2+ and redox homeostasis at the cellular level caused by ischemia/reperfusion remain major clinical challenges. In this study, we investigated the potential of adeno-associated virus (AAV)-9-mediated cardiac expression of a Type-2 ryanodine receptor (RyR2) degradation-associated gene, Presenilin 1 (PSEN1), to combat post-ischemic heart failure...
March 9, 2018: Journal of Drug Targeting
Ganesh V Halade, Paul C Norris, Vasundhara Kain, Charles N Serhan, Kevin A Ingle
Inflammation promotes healing in myocardial infarction but, if unresolved, leads to heart failure. To define the inflammatory and resolving responses, we quantified leukocyte trafficking and specialized proresolving mediators (SPMs) in the infarcted left ventricle and spleen after myocardial infarction, with the goal of distinguishing inflammation from its resolution. Our data suggest that the spleen not only served as a leukocyte reservoir but also was the site where SPMs were actively generated after coronary ligation in mice...
March 6, 2018: Science Signaling
Hans Erik Botker, Thomas Ravn Lassen, Nichlas Riise Jespersen
Rapid admission and acute interventional treatment combined with modern antithrombotic pharmacologic therapy have improved outcome in patients with ST-elevation myocardial infarction. The next major target to further improve outcome, seems to be ischemia reperfusion injury, which may contribute significantly to the final infarct size and hence mortality and post-infarction heart failure. Mechanical conditioning strategies including local and remote ischemic pre-, per- and postconditioning have demonstrated consistent cardioprotective capacities in experimental models of acute IR injury...
March 2, 2018: American Journal of Physiology. Heart and Circulatory Physiology
M Cecilia Bahit, Ajar Kochar, Christopher B Granger
Heart failure (HF) complicating myocardial infarction (MI) is common and may be present at admission or develop during the hospitalization. Among patients with MI, there is a strong relationship between degree of HF and mortality. The optimal management of the patient with HF complicating MI varies according to time since the onset of infarction. Medical therapy for HF after MI includes early (within 24 h) initiation of angiotensin-converting enzyme inhibitors and early (within 7 days) use of aldosterone antagonists...
March 2018: JACC. Heart Failure
Al Muktafi Sadi, Talat Afroze, M Ahsan Siraj, Abdul Momen, Colin White-Dzuro, Dorrin Zarrin-Khat, Shivalika Handa, Kiwon Ban, M Golam Kabir, Maria G Trivieri, Robert Gros, Peter Backx, Mansoor Husain
Background:  Heart failure (HF) is associated with reduced expression of plasma membrane Ca2+ -ATPase 4 (PMCA4).  Cardiac-specific overexpression of human PMCA4b in mice inhibited nNOS activity and reduced cardiac hypertrophy by inhibiting calcineurin.  Here we examine temporally-regulated cardiac-specific over-expression of hPMCA4b in mouse models of myocardial ischemia reperfusion injury (IRI) ex vivo , and HF following experimental myocardial infarction (MI) in vivo Methods & Results: Doxycycline-regulated cardiomyocyte-specific overexpression and activity of hPMCA4b produced adaptive changes in expression levels of Ca2+ -regulatory genes, and induced hypertrophy without significant differences in Ca2+ transients or diastolic Ca2+ concentrations...
February 27, 2018: Clinical Science (1979-)
Jens M Hohlfeld, Jens Vogel-Claussen, Heike Biller, Dominik Berliner, Korbinian Berschneider, Hanns-Christian Tillmann, Simone Hiltl, Johann Bauersachs, Tobias Welte
BACKGROUND: Pulmonary hyperinflation in chronic obstructive pulmonary disease (COPD) is associated with reduced biventricular end-diastolic volumes and increased morbidity and mortality. The combination of a long-acting β agonist (LABA) and a muscarinic antagonist (LAMA) is more effective in reducing hyperinflation than LABA-inhaled corticosteroid combination therapy but whether dual bronchodilation improves cardiac function is unknown. METHODS: We did a double-blind, randomised, two-period crossover, placebo-controlled, single-centre study (CLAIM) at the Fraunhofer Institute of Toxicology and Experimental Medicine (Hannover, Germany), a specialty clinic...
February 21, 2018: Lancet Respiratory Medicine
Francesco Sessa, Valenzano Anna, Giovanni Messina, Giuseppe Cibelli, Vincenzo Monda, Gabriella Marsala, Maria Ruberto, Antonio Biondi, Orazio Cascio, Giuseppe Bertozzi, Daniela Pisanelli, Francesca Maglietta, Antonietta Messina, Maria P Mollica, Monica Salerno
Sudden cardiac death (SCD) represents about 25% of deaths in clinical cardiology. The identification of risk factors for SCD is the philosopher's stone of cardiology and the identification of non-invasive markers of risk of SCD remains one of the most important goals for the scientific community.The aim of this review is to analyze the state of the art around the Heart Rate Variability (HRV) as a predictor factor for SCD.HRV is probably the most analyzed index in cardiovascular risk stratification technical literature, therefore an important number of models and methods have been developed...
February 23, 2018: Aging
Wouter C Meijers, Manuel Maglione, Stephan J L Bakker, Rupert Oberhuber, Lyanne M Kieneker, Steven de Jong, Bernhard J Haubner, Wouter B Nagengast, Alexander R Lyon, Bert van der Vegt, Dirk J van Veldhuisen, B Daan Westenbrink, Peter van der Meer, Herman H W Silljé, Rudolf A de Boer
Background -Heart failure (HF) survival has improved and nowadays many patients with HF die from non-cardiac causes, including cancer. Our aim was to investigate whether a causal relationship exists between HF and the development of cancer. Methods -HF was induced by inflicting large anterior myocardial infarction (MI) in APCmin mice, which are prone to develop precancerous intestinal tumors, and tumor growth was measured. In addition, to rule out hemodynamic impairment, a heterotopic heart transplantation model was employed, where an infarcted or sham-operated heart was transplanted into a recipient mouse, while the native heart was left in situ...
February 19, 2018: Circulation
Ganesh V Halade, Vasundhara Kain, Charles N Serhan
Resolvins are innate, immune responsive, bioactive mediators generated after myocardial infarction (MI) to resolve inflammation. The MI-induced bidirectional interaction between progressive left ventricle (LV) remodeling and kidney dysfunction is known to advance cardiorenal syndrome (CRS). Whether resolvins limit MI-induced cardiorenal inflammation is unclear. Thus, to define the role of exogenous resolvin D (RvD)-1 in post-MI CRS, we subjected 8-12-wk-old male C57BL/6 mice to coronary artery ligation. RvD1 was injected 3 h after MI...
February 13, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Vikas Pathak, Kriti Suwal
INTRODUCTION: The impact of pulmonary artery hypertension on post-operative outcome in elective, non-cardiac surgery is incompletely understood. This study was designed to evaluate the post-operative outcome of patients undergoing elective, non-cardiac surgery with and without pulmonary hypertension. METHODS: The study was conducted in an inner-city hospital in Bronx, New York. A retrospective chart review was conducted on all patients who underwent elective, non- cardiac surgery from January 2000 to December 2010 and had echocardiogram within 30 days of surgery...
October 2017: JNMA; Journal of the Nepal Medical Association
João Pedro Ferreira, Nicolas Girerd, John Gregson, Ichraq Latar, Abhinav Sharma, Marc A Pfeffer, John J V McMurray, Azmil H Abdul-Rahim, Bertram Pitt, Kenneth Dickstein, Patrick Rossignol, Faiez Zannad
BACKGROUND: Stroke can occur after myocardial infarction (MI) in the absence of atrial fibrillation (AF). OBJECTIVES: This study sought to identify risk factors (excluding AF) for the occurrence of stroke and to develop a calibrated and validated stroke risk score in patients with MI and heart failure (HF) and/or systolic dysfunction. METHODS: The datasets included in this pooling initiative were derived from 4 trials: CAPRICORN (Effect of Carvedilol on Outcome After Myocardial Infarction in Patients With Left Ventricular Dysfunction), OPTIMAAL (Optimal Trial in Myocardial Infarction With Angiotensin II Antagonist Losartan), VALIANT (Valsartan in Acute Myocardial Infarction Trial), and EPHESUS (Eplerenone Post-Acute Myocardial Infarction Heart Failure Efficacy and Survival Study); EPHESUS was used for external validation...
February 20, 2018: Journal of the American College of Cardiology
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