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https://www.readbyqxmd.com/read/29777709/amelioration-of-myocardial-ischemia-reperfusion-injury-by-sirt4-involves-mitochondrial-protection-and-reduced-apoptosis
#1
Guangwei Zeng, Hui Liu, Haiyan Wang
Apoptosis and mitochondria dysfunction are key contributors to myocardial ischemia-reperfusion (MI-R) injury. SIRT4, a mitochondrial-localized sirtuin, controls cellular energy metabolism and stress response, and is abundantly present in the heart, however, its role in MI-R injury is not clear. In the current study, we demonstrate that SIRT4 is downregulated in cardiomyocytes both in vitro and in vivo models after MI-R. Functionally, SIRT4 overexpression decreases myocardial infarct size and serum creatine phosphokinase (CPK) level, and vice versa, SIRT4 depletion by siRNA increases myocardial infarct size and serum CPK level...
May 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29777297/optical-coherence-tomography-in-stemi-with-bioresorbable-scaffold-possible-cause-of-coronary-flow-impairment-a-sub-study-from-the-prague-19-trial
#2
Marco Loffi, Petr Tousek, Tomas Budesinsky, Libor Lisa, Andrea Santangelo, Petr Widimsky, Viktor Kocka
This study assessed the Optical Coherence Tomography (OCT) impact on the coronary flow in ST-elevation myocardial infarction (STEMI) after bioresorbable scaffold implantation. Only few data about OCT use in STEMI are available and coronary flow before and after OCT is not well studied yet. 54 patients with OCT performed at the end of procedure from the Prague 19 trial were selected and coronary flow was evaluated as TIMI frame count (TFC) before and just after OCT. Significant increase in TIMI frame count after OCT [from 9...
May 18, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29776961/mr-proadm-as-a-prognostic-marker-in-patients-with-st-segment-elevation-myocardial-infarction-danami-3-a-danish-study-of-optimal-acute-treatment-of-patients-with-stemi-substudy
#3
Alexander C Falkentoft, Rasmus Rørth, Kasper Iversen, Dan E Høfsten, Henning Kelbæk, Lene Holmvang, Martin Frydland, Mikkel M Schoos, Steffen Helqvist, Anna Axelsson, Peter Clemmensen, Erik Jørgensen, Kari Saunamäki, Hans-Henrik Tilsted, Frants Pedersen, Christian Torp-Pedersen, Klaus F Kofoed, Jens P Goetze, Thomas Engstrøm, Lars Køber
BACKGROUND: Midregional proadrenomedullin (MR-proADM) has demonstrated prognostic potential after myocardial infarction (MI). Yet, the prognostic value of MR-proADM at admission has not been examined in patients with ST-segment-elevation MI (STEMI). METHODS AND RESULTS: The aim of this substudy, DANAMI-3 (The Danish Study of Optimal Acute Treatment of Patients with ST-segment-elevation myocardial infarction), was to examine the associations of admission concentrations of MR-proADM with short- and long-term mortality and hospital admission for heart failure in patients with ST-segment-elevation myocardial infarction...
May 18, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29776957/sudden-death-in-patients-with-severe-aortic-stenosis-observations-from-the-current-as-registry
#4
Tomohiko Taniguchi, Takeshi Morimoto, Hiroki Shiomi, Kenji Ando, Norio Kanamori, Koichiro Murata, Takeshi Kitai, Yuichi Kawase, Chisato Izumi, Takao Kato, Katsuhisa Ishii, Kazuya Nagao, Yoshihisa Nakagawa, Mamoru Toyofuku, Naritatsu Saito, Kenji Minatoya, Takeshi Kimura
BACKGROUND: The annual incidence of sudden death has been reported to be low (<1%/year) in asymptomatic patients with severe aortic stenosis (AS), and there is a paucity of data on the risk factors of sudden death in patients with severe AS. METHODS AND RESULTS: We evaluated the incidence and risk factors of sudden death during the median follow-up period of 1334 days in the Contemporary Outcomes After Surgery and Medical Treatment in Patients With Severe Aortic Stenosis (CURRENT AS) registry enrolling 3815 consecutive patients with severe AS between 2003 and 2011...
May 18, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29776652/meta-analysis-of-transcatheter-valve-in-valve-implantation-versus-redo-aortic-valve-surgery-for-bioprosthetic-aortic-valve-dysfunction
#5
Saroj Neupane, Hemindermeet Singh, Johannes Lämmer, Hussein Othman, Hiroshi Yamasaki, Howard S Rosman, Eduardo Bossone, Rajendra H Mehta, Holger Eggebrecht
Transcatheter valve-in-valve implantation (ViV-TAVI) has evolved as an alternative to redo surgical valve replacement (redo-SAVR) for high-risk patients with aortic bioprosthetic valve (BPV) dysfunction. The differences in procedural success and outcomes in a large number of patients who underwent ViV-TAVI compared with redo-SAVR for aortic BPV dysfunction are not known. We conducted a meta-analysis of the previously reported studies to determine outcomes after ViV-TAVI and redo-SAVR. PubMed, MEDLINE, and Google Scholar databases were searched for studies that reported comparative outcomes of patients who underwent either ViV-TAVI or redo-SAVR...
April 19, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29776575/optimal-long-term-antithrombotic-treatment-of-patients-with-stable-coronary-artery-disease-and-atrial-fibrillation-oltat-registry
#6
Q Fischer, J L Georges, C Le Feuvre, A Sharma, N Hammoudi, E Berman, S Cohen, I Jolivet, J Silvain, G Helft
BACKGROUND: The optimal long-term antithrombotic treatment of patients with stable coronary artery disease (CAD) and atrial fibrillation (AF) is a challenge in daily practice. We sought to determine the prevalence of hemorrhagic complications and ischaemic events depending on antithrombotic strategy in patients with stable CAD and AF. METHODS: The primary outcome was major adverse cardiac and cerebrovascular events (MACCE) defined as a composite of cardiovascular mortality, myocardial infarction and ischaemic stroke...
August 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29776573/duration-of-dual-antiplatelet-therapy-and-outcome-in-patients-with-acute-coronary-syndrome-undergoing-percutaneous-revascularization-a-meta-analysis-of-11-randomized-trials
#7
Monica Verdoia, Elvin Khedi, Claudia Ceccon, Harry Suryapranata, Giuseppe De Luca
BACKGROUND: Acute coronary syndromes (ACS) represent a context of higher thrombotic risk, where larger advantages have been achieved by the administration of dual antiplatelet therapy (DAPT). However, the indication of 1 year DAPT after coronary angioplasty for ACS has been supported by an outdated randomized trial (PCI-CURE). In addition, the initial fear of late thrombotic events emerged with first generation drug-eluting stents (DES), that suggested the need of a prolonged DAPT prescription, has been completely overcome by the recent technological evolution of DES, that have shown faster re-endothelization and lower rates of late thrombotic complications...
August 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29776337/should-statin-guidelines-consider-patient-preferences-eliciting-preferences-of-benefit-and-harm-outcomes-of-statins-for-primary-prevention-of-cardiovascular-disease-in-the-sub-saharan-african-and-european-contexts
#8
Henock G Yebyo, Hélène E Aschmann, Tsung Yu, Milo A Puhan
BACKGROUND: Patient preferences are key parameters to evaluate benefit-harm balance of statins for primary prevention but they are not readily available to guideline developers and decision makers. Our study aimed to elicit patient preferences for benefit and harm outcomes related to use of statins for primary cardiovascular disease prevention and to examine how the preferences differ across economically and socio-culturally different environments. METHODS: We conducted preference-eliciting surveys using best-worst scaling designed with a balanced incomplete-block design (BIBD) on 13 statins-related outcomes on 220 people in Ethiopia and Switzerland...
May 18, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29775643/myocardial-infarction-induced-hippocampal-microtubule-damage-by-cardiac-originating-microrna-1-in-mice
#9
Lin-Lin Sun, Ming-Jing Duan, Ji-Chao Ma, Ling Xu, Meng Mao, Das Biddyut, Qin Wang, Chao Yang, Shuai Zhang, Yi Xu, Lin Yang, You Tian, Ying Liu, Sheng-Nan Xia, Ke-Xin Li, Zhuo Jin, Qiaojie Xiong, Jing Ai
Cardiovascular diseases are risk factors for dementia, but the mechanisms remain elusive. Here, we report that myocardial infarction (MI) generated by the ligation of the left coronary artery (LCA) could lead to increased miR-1 levels in the hippocampus and blood with neuronal microtubule damage and decreased TPPP/p25 protein expression in the hippocampus. These changes could be prevented by a knockdown of miR-1 using hippocampal stereotaxic injections of anti-miR-1 oligonucleotide fragments carried by a lentivirus vector (lenti-pre-AMO-miR-1)...
May 15, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29775430/gene-expression-profile-analysis-of-aortic-vascular-smooth-muscle-cells-reveals-upregulation-of-cadherin-genes-in-myocardial-infarction-patients
#10
Anselm A Derda, Chin Cheng Woo, Thidathip Wongsurawat, Mark Richards, Chuen Neng Lee, Theo Kofidis, Vladimir A Kuznetsov, Vitaly A Sorokin
Myocardial infarction (MI) induced by acute coronary arterial occlusion is usually secondary to atherosclerotic plaque rupture. Dysregulated response of vascular smooth muscle cells (VSMCs) in atherosclerotic plaques may promote plaque rupture. Cadherins (CDHs) form adherens junctions and are known stabilizers of atherosclerotic plaques. To date, the expression patterns of cadherin have not been well investigated in MI aortic VSMCs. We aimed to investigate the expression of cadherin genes in the aortic wall of patients with and without MI...
May 18, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29775405/the-mouse-heart-attack-research-tool-mhart-1-0-database
#11
Kristine Y DeLeon-Pennell, Rugmani Padmanabhan Iyer, Yonggang Ma, Andriy Yabluchanskiy, Rogelio Zamilpa, Ying Ann Chiao, Presley Cannon, Courtney Cates, Elizabeth R Flynn, Ganesh V Halade, Lisandra E de Castro Bras, Merry L Lindsey
The generation of Big Data has enabled systems-level dissections into the mechanisms of cardiovascular pathology. Integration of genetic, proteomic, and pathophysiological variables across platforms and laboratories fosters discoveries through multidisciplinary investigations and minimizes unnecessary redundancy in research efforts. The Mouse Heart Attack Research Tool (mHART) consolidates a large dataset of over 10 years of experiments from a single laboratory for cardiovascular investigators to generate novel hypotheses and identify new predictive markers of progressive left ventricular remodeling following myocardial infarction (MI) in mice...
May 18, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29774986/everolimus-drug-eluting-stent-performance-in-patients-with-long-coronary-lesions-the-multicenter-longprime-registry
#12
José Francisco Díaz Fernández, Santiago Jesús Camacho Freire, Juan Carlos Fernández Guerrero, Nicolas Delarche, Christophe Bretelle, Javier Zueco Gil, Ramón López Palop, Bruno García Del Blanco, Vicente Mainar Tello, Franck Albert
OBJECTIVES: To assess the efficacy and safety of the Xience Prime everolimus-eluting stent (EES) in long coronary lesions in a real-world population. BACKGROUND: Long lesions are considered difficult technically and in terms of achieving successful clinical outcomes. With first generation DES, MACE can be as high as 10% at a short-medium term follow-up. There are a few data available in this subset regarding the use of second generation DES METHODS: A prospective, multicenter registry of consecutive patients (aged 64...
May 18, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29774749/excess-costs-of-non-infectious-comorbidities-among-people-living-with-hiv-estimates-from-denmark-and-sweden
#13
Frida Hjalte, Paul S Calara, Anders Blaxhult, Marie Helleberg, Karoline Wallace, Peter Lindgren
People living with HIV have an increased risk of comorbidities with non-communicable diseases such as cardiovascular disease, chronic kidney disease and osteoporotic fractures, compared to the general population. The burden of these comorbidities is expected to rise as the HIV-infected population ages. This development may require additional health care resources and it is relevant to ascertain the costs associated with these comorbidities. The population attributed risk approach was applied to estimate excess costs associated with the higher rates of comorbidities among HIV patients in Denmark and Sweden compared to their respective general populations...
May 18, 2018: AIDS Care
https://www.readbyqxmd.com/read/29774732/management-of-peridural-catheter-removal-during-dual-anti-platelet-therapy-after-postoperative-myocardial-infarction-and-drug-eluting-stent-implantation-applying-the-bridging-therapy-concept
#14
Tindaro Mogavero, Rocco Pace, Luigi Vetrugno
No abstract text is available yet for this article.
May 15, 2018: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29774564/mortality-in-sepsis-comparison-of-outcomes-between-patients-with-demand-ischemia-acute-myocardial-infarction-and-neither-demand-ischemia-nor-acute-myocardial-infarction
#15
Mahek Shah, Soumya Patnaik, Obiora Maludum, Brijesh Patel, Byomesh Tripathi, Manyoo Agarwal, Lohit Garg, Sahil Agrawal, Ulrich P Jorde, Matthew W Martinez
INTRODUCTION: Elevation in cardiac troponins is common among septic patients. We sought to explore outcomes among those admitted with demand ischemia(DI), acute myocardial infarction(AMI) and neither DI nor AMI in sepsis. METHODS: We analyzed data from the 2011-2014 National Inpatient Sample among patients admitted for sepsis. We compared outcomes among sepsis patients with i)DI versus AMI and ii)DI versus neither DI nor AMI using separate propensity matched cohorts...
May 18, 2018: Clinical Cardiology
https://www.readbyqxmd.com/read/29774530/cardiomyocyte-programmed-necrosis-mitochondria-death-receptor-and-beyond
#16
REVIEW
Junxia Zhang, Dairu Liu, Mao Zhang, Yan Zhang
Excessive death of cardiac myocytes leads to multiple cardiac diseases, including myocardial infarction, arrhythmia, heart failure and sudden cardiac death. For the last several decades, most work on cell death has focused on apoptosis, which is generally considered as the only form of regulated cell death, whereas necrosis has been regarded to be an unregulated process. Recent findings reveal that necrosis also occurs in a regulated manner and that it is closely related to the physiology and pathophysiology of multiple organs, including the heart...
May 18, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29774440/in-vivo-estimation-of-elastic-heterogeneity-in-an-infarcted-human-heart
#17
Gabriel Balaban, Henrik Finsberg, Simon Funke, Trine F Håland, Einar Hopp, Joakim Sundnes, Samuel Wall, Marie E Rognes
In myocardial infarction, muscle tissue of the heart is damaged as a result of ceased or severely impaired blood flow. Survivors have an increased risk of further complications, possibly leading to heart failure. Material properties play an important role in determining post-infarction outcome. Due to spatial variation in scarring, material properties can be expected to vary throughout the tissue of a heart after an infarction. In this study we propose a data assimilation technique that can efficiently estimate heterogeneous elastic material properties in a personalized model of cardiac mechanics...
May 17, 2018: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/29774076/the-human-somatostatin-receptor-type-2-as-an-imaging-and-suicide-reporter-gene-for-pluripotent-stem-cell-derived-therapy-of-myocardial-infarction
#18
Katrien Neyrinck, Natacha Breuls, Bryan Holvoet, Wouter Oosterlinck, Esther Wolfs, Hubert Vanbilloen, Olivier Gheysens, Robin Duelen, Willy Gsell, Ivo Lambrichts, Uwe Himmelreich, Catherine M Verfaillie, Maurilio Sampaolesi, Christophe M Deroose
Rationale: Pluripotent stem cells (PSCs) are being investigated as a cell source for regenerative medicine since they provide an infinitive pool of cells that are able to differentiate towards every cell type of the body. One possible therapeutic application involves the use of these cells to treat myocardial infarction (MI), a condition where billions of cardiomyocytes (CMs) are lost. Although several protocols have been developed to differentiate PSCs towards CMs, none of these provide a completely pure population, thereby still posing a risk for neoplastic teratoma formation...
2018: Theranostics
https://www.readbyqxmd.com/read/29774073/polypyrrole-chitosan-conductive-biomaterial-synchronizes-cardiomyocyte-contraction-and-improves-myocardial-electrical-impulse-propagation
#19
Zhi Cui, Nathan C Ni, Jun Wu, Guo-Qing Du, Sheng He, Terrence M Yau, Richard D Weisel, Hsing-Wen Sung, Ren-Ke Li
Background: The post-myocardial infarction (MI) scar interrupts electrical impulse propagation and delays regional contraction, which contributes to ventricular dysfunction. We investigated the potential of an injectable conductive biomaterial to restore scar tissue conductivity and re-establish synchronous ventricular contraction. Methods: A conductive biomaterial was generated by conjugating conductive polypyrrole (PPY) onto chitosan (CHI) backbones. Trypan blue staining of neonatal rat cardiomyocytes (CMs) cultured on biomaterials was used to evaluate the biocompatibility of the conductive biomaterials...
2018: Theranostics
https://www.readbyqxmd.com/read/29773952/remote-ischemic-preconditioning-in-myocardial-protection-in-hemodialysis-patients
#20
Marcelo R Bacci, Livia Y Vasconcelos, Neif Murad, Antonio Carlos P Chagas, Ana Carolina Capuano, Beatriz Ca Alves, Edimar C Pereira, Ligia A Azzalis, Virginia Bc Junqueira, Fernando LA Fonseca
Background: Remote ischemic preconditioning (RIPC) is a procedure that generates a brief period of ischemia followed by reperfusion. The role of RIPC in protecting myocardial ischemia during hemodialysis is not yet established. The aim of the study was to evaluate RIPC myocardial protection as evaluated by ultrasensitive I troponin in hemodialysis outpatients. Patients and methods: A double-blind randomized trial with two groups: intervention submitted to RIPC and control group without RIPC...
2018: International Journal of General Medicine
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