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https://www.readbyqxmd.com/read/28618915/coronary-artery-disease-risk-stratification-and-patient-selection-for-more-aggressive-secondary-prevention
#1
François Schiele, Fiona Ecarnot, Romain Chopard
In patients with stable coronary artery disease, clinical outcomes are predominantly characterized by the consequences of atherosclerosis on the myocardium, but also by complications of atherosclerosis, notably recurrent acute coronary syndrome or stroke. Secondary prevention therapy is therefore key in this patient population. Intensification of secondary prevention therapy is possible, at the price of a therapeutic risk or a high cost, therefore justifying careful selection of patients with a high residual risk and low therapeutic risk...
June 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28617303/prognostic-value-of-coronary-collaterals-in-patients-with-acute-coronary-syndromes
#2
Alparslan Kurtul, Selcuk Ozturk
BACKGROUND: The presence of good coronary collateral circulation (CCC) can protect and preserve myocardium from ischemia, increase myocardial contractility, and reduce adverse clinical events. However, its impact on mortality is still a topic of debate, particularly in acute coronary syndrome (ACS). The aim of this study was to investigate the association of CCC with cardiac risk factors and in-hospital mortality in patients hospitalized with a diagnosis of ACS. METHODS: The study population included 2286 patients with ACS who underwent coronary angiography and were found to have at least 90% significant lesion in at least one major coronary artery...
April 17, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28600129/angiogenic-peptide-nanofibers-repair-cardiac-tissue-defect-after-myocardial-infarction
#3
Abdul Jalil Rufaihah, I Ceren Yasa, Vaibavi Srirangam Ramanujam, Suganya Cheyyatraivendran Arularasu, Theo Kofidis, Mustafa O Guler, Ayse B Tekinay
Myocardial infarction remains one of the top leading causes of death in the world and the damage sustained in the heart eventually develops into heart failure. Limited conventional treatment options due to the inability of the myocardium to regenerate after injury and shortage of organ donors require the development of alternative therapies to repair the damaged myocardium. Current efforts in repairing damage after myocardial infarction concentrates on using biologically derived molecules such as growth factors or stem cells, which carry risks of serious side effects including the formation of teratomas...
June 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28598044/a-study-of-prehospital-delay-patterns-in-acute-myocardial-infarction-in-an-urban-tertiary-care-institute-in-mumbai
#4
Ashar Khan, Milind Phadke, Yash Y Lokhandwala, Pratap J Nathani
OBJECTIVE: There is now increasing awareness about the need for early diagnosis in patients presenting with chest pain. Pre-hospital delay remains a major hurdle in the institution of early reperfusion therapy, which is crucial in salvaging 'at-risk' myocardium and reducing adverse cardiovascular events following ST elevation myocardial infarction (STEMI). This study aims to determine the incidence and the determinants of delayed presentation STEMI and the potential impact of such delay on adverse cardiovascular outcomes...
May 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28596216/effect-of-ischemia-duration-and-protective-interventions-on-the-temporal-dynamics-of-tissue-composition-after-myocardial-infarction
#5
Rodrigo Fernández-Jiménez, Carlos Galan-Arriola, Javier Sanchez-Gonzalez, Jaume Aguero, Gonzalo Lopez-Martin, Sandra Gomez-Talavera, Jaime Garcia-Prieto, Austin Benn, Antonio de Molina, Manuel Barreiro-Perez, Ana Martin-Garcia, Ines Garcia-Lunar, Gonzalo Pizarro, Javier Sanz, Pedro Sánchez, Valentin Fuster, Borja Ibanez
Rationale: The impact of cardioprotective strategies and ischemia duration on post ischemia/reperfusion (I/R) myocardial tissue composition (edema, myocardium at risk [MaR], infarct size [IS], salvage, intramyocardial hemorrhage [IMH] and microvascular obstruction [MVO]) is not well understood. Objective: To study the effect of ischemia duration and protective interventions on the temporal dynamics of myocardial tissue composition in a translational animal model of I/R by the use of state-of-the-art imaging technology...
June 8, 2017: Circulation Research
https://www.readbyqxmd.com/read/28573824/bone-cement-cardiac-and-pulmonary-embolism
#6
Tomás F Cianciulli, Diego E Mc Loughlin, Luis A Morita, María C Saccheri, Jorge A Lax
This case describes a complication of bone cement use. A 65-year-old male patient with back spine trauma caused by a fall, underwent a percutaneous vertebroplasty. Five years later, he consulted for palpitations, and the electrocardiogram showed supraventricular arrhythmia. A transthoracic two-dimensional echocardiography showed a hyperechogenic linear structure of 7 cm length, running from the lateral wall of the right ventricle to the right atrium through the tricuspid valve. This foreign body, which was suspicious for bone cement embolism, appeared rigid and was attached at the lateral wall of the right ventricle, with its proximal end free in the right atrium...
June 1, 2017: Echocardiography
https://www.readbyqxmd.com/read/28560127/naproxen-and-diclofenac-attenuate-atorvastatin-induced-preconditioning-of-the-myocardium
#7
Zoltan Varga, Martina Nemcekova, Slavka Carnicka, Veronika Slezakova, Miriam Petrova, Marek Majdan, Tana Ravingerova, Viera Kristova
Statins reduce infarct size (IS) in ischemia-reperfusion injury of the myocardium. Inhibition of cyclooxygenase-2 (COX-2) attenuates this benefit. We investigated the effect of two widely used non-selective non-steroidal anti-inflammatory drugs (NSAIDs) with different degree of anti-COX-2 activity on atorvastatin-mediated preconditioning. Wistar rats received oral atorvastatin (10 mg∙kg(-1)∙day(-1)), naproxen (10 mg∙kg(-1)∙day(-1)), diclofenac (8 mg∙kg(-1)∙day(-1)), atorvastatin+naproxen, atorvastatin+diclofenac or water for three days...
April 29, 2017: Curēus
https://www.readbyqxmd.com/read/28550173/experimental-cardiac-radiation-exposure-induces-ventricular-diastolic-dysfunction-with-preserved-ejection-fraction
#8
Hirofumi Saiki, Gilles Moulay, Adam J Guenzel, Weibin Liu, Teresa Decklever, Kelly Classic, Linh Pham, Horng H Chen, John C Burnett, Stephen J Russell, Margaret M Redfield
BACKGROUND: Breast cancer radiotherapy increases the risk of heart failure (HF) with preserved ejection fraction (HFpEF). Cardiomyocytes are highly radio-resistant but radiation specifically affects coronary microvascular endothelial cells with subsequent microvascular inflammation and rarefaction. The effects of radiation on left ventricular (LV) diastolic function are poorly characterized. We hypothesized that cardiac radiation exposure may result in diastolic dysfunction without reduced EF...
May 26, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28539211/left-ventricular-perforation-in-a-patient-with-a-left-ventricular-aneurysm-during-noga%C3%A2-catheter-mapping
#9
Gaurav K Sharma, Marie-France Poulin, Gary L Schaer
Endocardial mapping of the left ventricle (LV) using the NOGA® XP Cardiac Navigation System can identify chronically ischemic and viable myocardium in patients with coronary artery disease by generating electromechanical maps. These maps are very useful when targeting myocardial tissue for injection of stem cells. We present the case of a woman who developed a perforation at the site of an LV aneurysm during NOGA mapping prior to the transendocardial injection of stem cells, as part of a multicenter clinical trial...
May 13, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28533209/rationale-and-design-of-a-clinical-trial-to-evaluate-the-safety-and-efficacy-of-intracoronary-infusion-of-allogeneic-human-cardiac-stem-cells-in-patients-with-acute-myocardial-infarction-and-left-ventricular-dysfunction-the-randomized-multicenter-double-blind
#10
Ricardo Sanz-Ruiz, Ana Casado Plasencia, Luis R Borlado, María Eugenia Fernández-Santos, Reem Al-Daccak, Piet Claus, Itziar Palacios, Rafael Sádaba, Dominique Charron, Jan Bogaert, Miguel Mulet, Raquel Yotti, Inmaculada Gilaberte, Antonio Bernad, Javier Bermejo, Stefan Janssens, Francisco Fernández-Avilés
Rationale: Stem cell therapy has increased the therapeutic armamentarium in the fight against ischemic heart disease and heart failure (HF). The administration of exogenous stem cells has been investigated in patients suffering an acute myocardial infarction (AMI) with the final aim of salvaging jeopardized myocardium and preventing left ventricular adverse remodeling and functional deterioration. However, phase I and II clinical trials with autologous and "first-generation" stem cells have yielded inconsistent benefits and mixed results...
May 22, 2017: Circulation Research
https://www.readbyqxmd.com/read/28525549/the-change-in-circulating-galectin-3-predicts-absence-of-atrial-fibrillation-after-thoracoscopic-surgical-ablation
#11
Wouter R Berger, Benoît Jagu, Nicoline W E van den Berg, Dean R P P Chan Pin Yin, Jan P van Straalen, Onno J de Boer, Antoine H G Driessen, Jolien Neefs, Sébastien P J Krul, WimJan P van Boven, Allard C van der Wal, Joris R de Groot
Aims: Galectin-3 (Gal-3) is an important mediator of cardiac fibrosis, particularly in heart failure. Increased Gal-3 concentration (Gal-3), associated with increased risk of developing atrial fibrillation (AF), may reflect atrial fibrotic remodelling underlying AF progression. We aimed to investigate whether the change in serum Gal-3 reflects alterations of the arrhythmogenic atrial substrate following thoracoscopic AF surgery, and predicts absence of AF. Methods and results: Consecutive patients undergoing thoracoscopic AF surgery were included...
May 19, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28475685/the-effect-of-c-reactive-protein-deposition-on-myocardium-with-ischaemia-reperfusion-injury-in-rats
#12
Se Jin Oh, Eun Na Kim, Chong Jai Kim, Jae-Sung Choi, Ki-Bong Kim
OBJECTIVES: We evaluated the effect of monomeric C-reactive protein (CRP) deposition on areas at risk (AAR) of myocardium with ischaemia-reperfusion injury. METHODS: Myocardial ischaemia-reperfusion injury model was produced by ligation of the left anterior descending coronary artery for 45 min followed by 45 min of reperfusion using female Sprague-Dawley rats. Tissue from non-ischaemic areas, areas at risk and infarct areas determined by Evans blue and 2,3,5-triphenyltetrazolium chloride staining was obtained from the sham group, the ischaemia-reperfusion injury without C-reactive protein (CRP) injection group (I/R only group), and the ischaemia-reperfusion injury with CRP injection group (I/R + CRP group)...
May 5, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28470585/evaluation-of-radioiodinated-1-4-naphthoquinones-as-necrosis-avid-agents-for-rapid-myocardium-necrosis-imaging
#13
Chang Su, Dongjian Zhang, Na Bao, Aiyan Ji, Yuanbo Feng, Li Chen, Yicheng Ni, Jian Zhang, Zhiqi Yin
PURPOSE: Identifying necrotic myocardium in ischemic regions is of great importance for risk stratification and clinical decision-making. However, rapid noninvasive imaging of necrotic myocardium is still challenging. This study sought to evaluate the potential of 1,4-naphthoquinones to rapidly visualize necrotic myocardium and the possible mechanisms of necrosis avidity. PROCEDURES: Six 1,4-naphthoquinones were radiolabeled with iodine-131 and the necrosis avidity was estimated in mouse models with muscular necrosis by gamma counting and autoradiography...
May 3, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28444063/effect-of-lactation-on-myocardial-vulnerability-to-ischemic-insult-in-rats
#14
Sahar Askari, Alireza Imani, Hamidreza Sadeghipour, Mahdieh Faghihi, Zohreh Edalatyzadeh, Samira Choopani, Nasser Karimi, Sulail Fatima
Background: Cardiovascular diseases are the leading cause of mortality and long-term disability worldwide. Various studies have suggested a protective effect of lactation in reducing the risk of cardiovascular diseases. Objective: This study was designed to assess the effects of pregnancy and lactation on the vulnerability of the myocardium to an ischemic insult. Methods: Eighteen female rats were randomly divided into three groups: ischemia-reperfusion (IR), in which the hearts of virgin rats underwent IR (n = 6); lactating, in which the rats nursed their pups for 3 weeks and the maternal hearts were then submitted to IR (n = 6); and non-lactating, in which the pups were separated after birth and the maternal hearts were submitted to IR (n = 6)...
May 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28439734/myocardial-salvage-after-primary-percutaneous-coronary-intervention-in-patients-with-st-elevation-myocardial-infarction-presenting-early-versus-late-after-symptom-onset
#15
Thomas Stiermaier, Ingo Eitel, Suzanne de Waha, Janine Pöss, Georg Fuernau, Holger Thiele, Steffen Desch
Primary percutaneous coronary intervention (PCI) is the treatment of choice in patients with ST-elevation myocardial infarction (STEMI) presenting within 12 h of symptom onset. A benefit in the subacute stage is less clear. The aim of the present analysis was to compare myocardial salvage and infarct size between patients with early and late reperfusion after STEMI. We compared cardiac magnetic resonance (CMR) data from a randomized controlled trial (RCT) in STEMI patients presenting within 12 h (n = 695) and a RCT of subacute STEMI patients presenting between 12 and 48 h (n = 93) after symptom onset...
April 24, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28438740/clinical-significance-of-postinfarct-fever-in-st-segment-elevation-myocardial-infarction-a-cardiac-magnetic-resonance-imaging-study
#16
Woo Jin Jang, Jeong Hoon Yang, Young Bin Song, Woo Jung Chun, Ju Hyeon Oh, Yong Hwan Park, Mi Rae Lee, Jin Kyung Hwang, Ji-Won Hwang, Joo-Yong Hahn, Seung-Hyuk Choi, Sang-Chol Lee, Yeon Hyeon Choe, Hyeon-Cheol Gwon
BACKGROUND: Little is known about causality and pathological mechanism underlying association of postinfarct fever with myocardial injury in patients with ST-segment elevation myocardial infarction. METHODS AND RESULTS: In 276 patients undergoing primary percutaneous coronary intervention for ST-segment elevation myocardial infarction, cardiac magnetic resonance imaging was performed a median of 3.4 days after the index procedure. Forty-five patients had postinfarct fever (peak body temperature within 4 days after primary percutaneous coronary intervention ≥37...
April 24, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28427417/novel-trigenic-cacna1c-des-mypn-mutations-in-a-family-of-hypertrophic-cardiomyopathy-with-early-repolarization-and-short-qt-syndrome
#17
Yanhong Chen, Hector Barajas-Martinez, Dongxiao Zhu, Xihui Wang, Chonghao Chen, Ruijuan Zhuang, Jingjing Shi, Xueming Wu, Yijia Tao, Weidong Jin, Xiaoyan Wang, Dan Hu
BACKGROUND: Hypertrophic cardiomyopathy (HCM) patients with early repolarization (ER) pattern are at higher risk of ventricular arrhythmia, yet the genetic background of this situation has not been well investigated. Here we report novel trigenic mutations detected in a Chinese family of obstructive HCM with ER and short QT syndrome (SQTS). METHODS: Proband and family members underwent detailed medical assessments. DNAs were extracted from peripheral blood leukocytes for genetic screening with next generation method...
April 20, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28414663/not-another-acs-rule-out
#18
S Preston, R Nelson, M Watts, D Smith, T Dewenter, D Spruill
CASE: A 50 year old African-American woman with diabetes, hypertension, and hyperlipidemia presented with progressively worsening retro-sternal chest pain, exacerbated by activity and relieved by rest. She also endorsed a thirty-pound unintentional weight loss, and dysphagia. She was dysarthric with left-sided Bell's Palsy and a palpable left axillary lymph node. She had been evaluated at several hospitals in the previous months for similar typical chest pain. Her troponin values were normal, and an EKG showed T-wave inversions in leads I and aVL...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28397162/sustained-placental-growth-factor-2-treatment-does-not-aggravate-advanced-atherosclerosis-in-ischemic-cardiomyopathy
#19
Ming Wu, Peter Pokreisz, Melissa Swinnen, Ellen Caluwe, Hilde Gillijns, Nina Vanden Driessche, Andrea Casazza, Erik Verbeken, Desire Collen, Stefan Janssens
Angiogenic growth factor therapy for ischemic cardiovascular disease carries a risk of stimulating atherosclerotic plaque growth. We evaluated risk benefit ratio of sustained administration of recombinant human placental growth factor (rhPlGF)-2 in mice with advanced atherosclerosis and chronic ischemic cardiomyopathy. We maintained apolipoprotein E-deficient mice on a high cholesterol diet and induced myocardial infarction by transient ligation at 4 weeks. At 8 weeks, we assessed left ventricular (LV) function and randomized mice to receive rhPlGF-2 or vehicle (VEH) subcutaneously for 28 days...
April 10, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28373293/lipid-metabolism-and-its-implications-for-type-1-diabetes-associated-cardiomyopathy
#20
REVIEW
Rebecca H Ritchie, Eser J Zerenturk, Darnel Prakoso, Anna C Calkin
Diabetic cardiomyopathy was first defined over four decades ago. It was observed in small post-mortem studies of diabetic patients who suffered from concomitant heart failure despite the absence of hypertension, coronary disease or other likely causal factors, as well as in large population studies such as the Framingham Heart Study. Subsequent studies continue to demonstrate an increased incidence of heart failure in the setting of diabetes independent of established risk factors, suggesting direct effects of diabetes on the myocardium...
May 2017: Journal of Molecular Endocrinology
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