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Myocardial Infarction

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https://www.readbyqxmd.com/read/29145641/changes-in-global-longitudinal-strain-and-left-ventricular-ejection-fraction-during-the-first-year-after-myocardial-infarction-results-from-a-large-consecutive-cohort
#1
Tomasz Baron, Christina Christersson, Gustav Hjorthén, Eva-Maria Hedin, Frank A Flachskampf
Aims: To determine changes of global longitudinal strain (GLS) and their predictors in relation to classical echocardiographic parameters of left ventricular (LV) function, over 1 year, in consecutive patients with myocardial infarction (MI) and initially normal or impaired LV ejection fraction (EF). Methods and results: A total of 285 patients with MI prospectively included in the REBUS (RElevance of Biomarkers for future risk of thromb-oembolic events in UnSelected post-myocardial infarction patients) study underwent echocardiography within 72 h from admission and after 1 year...
November 13, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29145634/risk-profiles-for-acute-health-events-after-incident-atrial-fibrillation-in-patients-with-end-stage-renal-disease-on-hemodialysis
#2
Medha Airy, Tara I Chang, Victoria Y Ding, Benjamin A Goldstein, Nisha Bansal, Jingbo Niu, Sankar D Navaneethan, Mintu P Turakhia, Wolfgang C Winkelmayer
Background: Little is known about the cardiovascular risks of incident atrial fibrillation/flutter (AF) in patients with end-stage renal disease (ESRD) undergoing hemodialysis (HD). Methods: We studied older US patients who newly initiated HD for ESRD (2006-11) and who had not previously been diagnosed with AF, stroke, myocardial infarction (MI) or hip fracture. We used Cox regression with AF as a time-varying covariate, adjusted for socio-demographic characteristics and comorbidities to estimate hazard ratios [HRs (95% confidence intervals)] for the events of ischemic stroke, MI and death...
November 13, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29145326/should-fraction-flow-reserve-be-considered-an-important-decision-making-tool-to-stratify-patients-with-stable-coronary-artery-disease-for-percutaneous-coronary-intervention-a-meta-analysis
#3
Pravesh Kumar Bundhun, Chakshu Gupta, Feng Huang
BACKGROUND: Nowadays, fraction flow reserve (FFR) is being discussed in every percutaneous coronary intervention (PCI) capable hospitals. Owing to recent development in the medical field, FFR-guided PCI should be able to find a place in Interventional Cardiology. At present, the importance of FFR to stratify patients who require PCI has seldom systematically been investigated. In this analysis, we aimed to compare the major adverse cardiac events (MACEs) mainly in patients with stable coronary artery disease (CAD) to whom PCI was recommended and deferred respectively based on the FFR value...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145236/protection-by-nitrite-against-the-ischemic-effects-induced-by-acute-myocardial-infarction-in-mice
#4
Yafei Wang, Xin Song, Xia Yue, Hong Su, Yuanliang Gu, Linda Bowman, Min Ding, Baobo Zou, Jinshun Zhao, Xialu Lin
OBJECTIVE: This research was aimed to investigate the correct dose of nitrite that would act as a protection against the ischemic effects induced by acute myocardial infarction (AMI). METHODS: Mice were randomly divided into a sham-operation group (sham), an AMI operation group (AMI), and a nitrite pretreatment+AMI operation group (N+AMI). Seven days before the AMI operation, mice in the N+AMI group were pretreated with sodium nitrite in drinking water. RESULTS: One week after the AMI operation, serum lactate dehydrogenase (LDH) and creatine kinase (CK) activities in both AMI and N+AMI group were significantly higher than those in the sham group, but there were no significant differences between AMI and N+AMI mice...
November 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/29143812/the-nlrp3-inflammasome-in-acute-myocardial-infarction
#5
REVIEW
Stefano Toldo, Antonio Abbate
The heart is extremely sensitive to ischaemic injury. During an acute myocardial infarction (AMI) event, the injury is initially caused by reduced blood supply to the tissues, which is then further exacerbated by an intense and highly specific inflammatory response that occurs during reperfusion. Numerous studies have highlighted the central role of the NACHT, LRR, and PYD domains-containing protein 3 (NLRP3) inflammasome in this process. The inflammasome, an integral part of the innate immune system, is a macromolecular protein complex that finely regulates the activation of caspase 1 and the production and secretion of powerful pro-inflammatory cytokines such as IL-1β and IL-18...
November 16, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/29143297/impact-of-trimetazidine-treatment-on-5-year-clinical-outcomes-in-patients-with-significant-coronary-artery-spasm-a-propensity-score-matching-study
#6
Yong Hoon Kim, Ae-Young Her, Seung-Woon Rha, Byoung Geol Choi, Se Yeon Choi, Jae Kyeong Byun, Ahmed Mashaly, Yoonjee Park, Won Young Jang, Woohyeun Kim, Jah Yeon Choi, Eun Jin Park, Jin Oh Na, Cheol Ung Choi, Hong Euy Lim, Eung Ju Kim, Chang Gyu Park, Hong Seog Seo, Dong Joo Oh
OBJECTIVE: We aimed to evaluate the additive benefit of trimetazidine with well-known antispasmodic agents such as calcium channel blockers and nitrate in patients with significant coronary artery spasm (CAS) as assessed by acetylcholine provocation test up to 5 years. METHODS: A total 1727 patients with significant CAS were enrolled. They were divided into two groups: a trimetazidine group (trimetazidine, diltiazem, and nitrate, n = 695), and control group (diltiazem and nitrate, n = 473)...
November 15, 2017: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
https://www.readbyqxmd.com/read/29143226/aligned-ovine-diaphragmatic-myoblasts-overexpressing-human-connexin-43-seeded-on-poly-l-lactic-acid-scaffolds-for-potential-use-in-cardiac-regeneration
#7
Carlos Sebastián Giménez, Paola Locatelli, Florencia Montini Ballarin, Alejandro Orlowski, Ricardo A Dewey, Milagros Pena, Gustavo Abel Abraham, Ernesto Alejandro Aiello, María Del Rosario Bauzá, Luis Cuniberti, Fernanda Daniela Olea, Alberto Crottogini
Diaphragmatic myoblasts (DMs) are precursors of type-1 muscle cells displaying high exhaustion threshold on account that they contract and relax 20 times/min over a lifespan, making them potentially useful in cardiac regeneration strategies. Besides, it has been shown that biomaterials for stem cell delivery improve cell retention and viability in the target organ. In the present study, we aimed at developing a novel approach based on the use of poly (L-lactic acid) (PLLA) scaffolds seeded with DMs overexpressing connexin-43 (cx43), a gap junction protein that promotes inter-cell connectivity...
November 15, 2017: Cytotechnology
https://www.readbyqxmd.com/read/29143170/circumferential-strain-acquired-by-cmr-early-after-acute-myocardial-infarction-adds-incremental-predictive-value-to-late-gadolinium-enhancement-imaging-to-predict-late-myocardial-remodeling-and-subsequent-risk-of-sudden-cardiac-death
#8
Anthony A Holmes, Jorge Romero, Jeffrey M Levsky, Linda B Haramati, Newton Phuong, Leila Rezai-Gharai, Stuart Cohen, Lina Restrepo, Luis Ruiz-Guerrero, John D Fisher, Cynthia C Taub, Luigi Di Biase, Mario J Garcia
PURPOSE: Late adverse myocardial remodeling after acute myocardial infarction (AMI) is strongly associated with sudden cardiac death (SCD). Cardiac magnetic resonance (CMR) performed early after AMI can predict late remodeling and SCD risk with moderate accuracy. This study assessed the ability of CMR-measured circumferential strain (CS) to add incremental predictive information to late gadolinium enhancement (LGE). METHODS: Patients with an AMI and LVEF < 50% were screened for inclusion...
November 15, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29143137/segmental-biventricular-analysis-of-myocardial-function-using-high-temporal-and-spatial-resolution-tissue-phase-mapping
#9
Marius Menza, Daniela Föll, Jürgen Hennig, Bernd Jung
OBJECTIVE: Myocardial dysfunction of the right ventricle (RV) is an important indicator of RV diseases, e.g. RV infarction or pulmonary hypertension. Tissue phase mapping (TPM) has been widely used to determine function of the left ventricle (LV) by analyzing myocardial velocities. The analysis of RV motion is more complicated due to the different geometry and smaller wall thickness. The aim of this work was to adapt and optimize TPM to the demands of the RV. MATERIALS AND METHODS: TPM measurements were acquired in 25 healthy volunteers using a velocity-encoded phase-contrast sequence and kt-accelerated parallel imaging in combination with optimized navigator strategy and blood saturation...
November 15, 2017: Magma
https://www.readbyqxmd.com/read/29143103/combined-assessment-of-left-ventricular-end-diastolic-pressure-and-ejection-fraction-by-left-ventriculography-predicts-long-term-outcomes-of-patients-with-st-segment-elevation-myocardial-infarction
#10
Daiga Saito, Rine Nakanishi, Ippei Watanabe, Takayuki Yabe, Ryo Okubo, Hideo Amano, Mikihito Toda, Takanori Ikeda
In patients with ST-segment elevation myocardial infarction (STEMI), it is unclear if combined assessment of left ventricular end-diastolic pressure (LVEDP) and left ventricular ejection fraction (LVEF) improves prediction of major adverse cardiac events (MACE). We analyzed data from 266 STEMI patients who underwent successful percutaneous coronary intervention and subsequent left ventriculography (LVG). Patients were divided into 4 groups, as follows: Group 1, LVEDP < 21 mmHg and LVEF ≥ 55%; Group 2, LVEDP < 21 mmHg and LVEF < 55%; Group 3, LVEDP ≥ 21 mmHg and LVEF ≥ 55%; and Group 4, LVEDP ≥ 21 mmHg and LVEF < 55%...
November 15, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29142803/unprovoked-pulmonary-embolism-in-a-young-patient-with-marfan-syndrome
#11
Stella Pak, Andrew Kilgore, Rosanne Thornhill, Kyle Rako, Ali Meier, Gavriella Pora, Jillian M Costello, Christine Dee
Marfan syndrome is a rare connective tissue disorder with a prevalence of approximately 2 to 3 per 10,000 individuals. There have been some reports of young patients with Marfan syndrome developing arteriovenous thromboembolism. These events were unprovoked and recurrent. Owing to its rarity, hypercoagulopathy and other metabolic derangement in patients with Marfan syndrome remains largely unknown. Herein, we report a case of a young man with Marfan syndrome who had myocardial infarction and pulmonary embolism...
September 5, 2017: Curēus
https://www.readbyqxmd.com/read/29142492/early-changes-in-platelet-size-and-number-in-patients-with-acute-coronary-syndrome
#12
Zora Sušilović Grabovac, Darija Baković, Mislav Lozo, Irena Pintarić, Željko Dujić
A strong relationship exists between acute coronary syndrome (ACS) and platelets (PLTs) volume. Mean platelet volume (MPV) is a parameter of PLT functions and a marker for increased PLT activation. The aim of this study was to determine early changes in number of total PLT and MPV in different manifestation of ACS and to find out predictive value of MPV in the spectrum of ACS. This was a prospective study. One hundred thirty-four ACS patients were enrolled, 76 of them finished the study. PLT and MPV in patients with unstable angina, non-ST elevation, and ST elevation myocardial infarctions were determined on arrival and 1, 3, 72 hours, and 7 days after the admission to hospital...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29142491/impact-of-remote-ischemic-postconditioning-during-primary-percutaneous-coronary-intervention-on-left-ventricular-remodeling-after-anterior-wall-st-segment-elevation-myocardial-infarction-a-single-center-experience
#13
Ayman Elbadawi, Omar Awad, Ramy Raymond, Haytham Badran, Ahmad E Mostafa, Marwan Saad
The role of remote ischemic postconditioning (RIPostC) in improving left ventricular (LV) remodeling after primary percutaneous coronary intervention (PCI) is not well established. To determine the efficacy and safety of RIPostC in improving LV remodeling and cardiovascular outcomes after primary PCI for anterior ST-elevation myocardial infarction (STEMI). Seventy-one patients with anterior STEMI were randomized to primary PCI with RIPostC protocol ( n  = 36) versus conventional primary PCI ( n  = 35)...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29142025/cardioprotection-of-dapagliflozin-and-vildagliptin-in-cardiac-reperfusion-injury-rats
#14
Pongpan Tanajak, Piangkwan Sa-Nguanmoo, Sivaporn Sivasinprasan, Savitree Thummasorn, Natthaphat Siri-Angkul, Siriporn Chattipakorn, Nipon Chattipakorn
Sodium-glucose cotransporter 2 inhibitor (SGLT2-i) effects on cardiac ischemia/reperfusion (I/R) injury are unclear. Unlike SGLT2-i, dipeptidyl peptidase 4 inhibitors (DPP4-i) have shown effective cardioprotection in cardiac I/R injury. We aimed to investigate whether SGLT2-i reduces myocardial dysfunction and myocardial injury to a greater extent than DPP4-i in obese-insulin resistant rats with/without cardiac I/R injury. The high fat (HF) diet induced obese-insulin resistant rats were divided into 4 groups and received the following treatments for 28 days: vehicle (HFV); vildagliptin at a dosage of 3 mg/kg/day (HFVil); dapagliflozin at a dosage of 1 mg/kg/day (HFDa); and combination drugs (HFDaVil)...
November 15, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/29141890/british-thoracic-society-clinical-statement-on-pulmonary-arteriovenous-malformations
#15
Claire L Shovlin, Robin Condliffe, James W Donaldson, David G Kiely, Stephen J Wort
Pulmonary arteriovenous malformations (PAVMs) are structurally abnormal vascular communications that provide a continuous right-to-left shunt between pulmonary arteries and veins. Their importance stems from the risks they pose (>1 in 4 patients will have a paradoxical embolic stroke, abscess or myocardial infarction while life-threatening haemorrhage affects 1 in 100 women in pregnancy), opportunities for risk prevention, surprisingly high prevalence and under-appreciation, thus representing a challenging condition for practising healthcare professionals...
December 2017: Thorax
https://www.readbyqxmd.com/read/29141571/extra-virgin-olive-oil-and-cardiovascular-diseases-benefits-for-human-health
#16
Cristina Nocella, Vittoria Cammisotto, Luca Fianchini, Alessandra D'Amico, Marta Novo, Valentina Castellani, Francesco Violi, Roberto Carnevale
BACKGROUND AND OBJECTIVE: The cardioprotective properties of Mediterranean Diet were demonstrated for the first time from the Seven Country Study. In the last few decades, numerous epidemiological studies, as well as intervention trial, confirmed this observation, pointing out the close relationship between the Mediterranean diet and cardiovascular diseases. In this context, extra virgin olive oil (EVOO), the most representative component of this diet, seems to be relevant in lowering the incidence of cardiovascular events, including myocardial infarction and stroke...
November 14, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29141547/cardioprotective-effects-of-serca2a-overexpression-against-ischemia-reperfusion-induced-injuries-in-rats
#17
Yan Jian, Li-Li Tian, Lin-Hui Wang, Xiao-Dong Zhao, Jing-Wei Chen, Koji Murao, Wei Zhu, Liang Dong, Guo-Qing Wang, Wan-Ping Sun, Guo-Xing Zhang
AIMS: The aim of the present study is to assess how genetically increased Sarcoplasmic reticulum Ca2+-ATPase (Serca2a) expression affects cardiac injury after ischemia/reperfusion (I/R) exposure and the related mechanisms involved. METHODS AND RESULTS: Rats were subjected to left anterior descending coronary artery (LAD) occlusion for 30 min followed by a 24-hour reperfusion. Cardiac function analysis revealed that cardiac function dramatically improved in Serca2a transgenic rats (Serca2aTG) rats compared to wild type (WT) rats...
November 10, 2017: Current Gene Therapy
https://www.readbyqxmd.com/read/29141503/association-of-the-genetic-and-traditional-risk-factors-of-ischaemic-heart-disease-with-stemi-and-nstemi-development
#18
Diana Žaliaduonytė-Pekšienė, Vaiva Lesauskaitė, Rasa Liutkevičienė, Vytenis Tamakauskas, Vilius Kviesulaitis, Giedrė Šinkūnaitė-Maršalkienė, Sandrita Šimonytė, Simonita Mačiulskytė, Eglė Tamulevičiūtė-Prascienė, Olivija Gustienė, Abdonas Tamošiūnas, Remigijus Žaliūnas
INTRODUCTION: To evaluate the influence of traditional risk factors of ischaemic heart disease and genetic factors to predict different types of acute coronary syndromes. MATERIALS AND METHODS: Five hundred and twenty-three patients with acute coronary syndromes (393 with ST elevation myocardial infarction (STEMI) and 130 with non-ST elevation myocardial infarction (NSTEMI)) comprised the study group. The control group consisted of 645 subjects free from symptoms of ischaemic heart disease and stroke...
October 2017: Journal of the Renin-angiotensin-aldosterone System: JRAAS
https://www.readbyqxmd.com/read/29141446/myocardial-reparative-functions-of-exosomes-from-mesenchymal-stem-cells-are-enhanced-by-hypoxia-treatment-of-the-cells-via-transferring-microrna-210-in-an-nsmase2-dependent-way
#19
Jinyun Zhu, Kai Lu, Ning Zhang, Yun Zhao, Qunchao Ma, Jian Shen, Yinuo Lin, Pingping Xiang, Yaoliang Tang, Xinyang Hu, Jinghai Chen, Wei Zhu, Keith A Webster, Jian'an Wang, Hong Yu
Hypoxia treatment enhances paracrine effect of mesenchymal stem cells (MSCs). The aim of this study was to investigate whether exosomes from hypoxia-treated MSCs (Exo(H)) are superior to those from normoxia-treated MSCs (Exo(N)) for myocardial repair. Mouse bone marrow-derived MSCs were cultured under hypoxia or normoxia for 24 h, and exosomes from conditioned media were intramyocardially injected into infarcted heart of C57BL/6 mouse. Exo(H) resulted in significantly higher survival, smaller scar size and better cardiac functions recovery...
November 16, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29141241/mmp-9-and-its-regulators-timp-1-and-emmprin-in-patients-with-acute-st-elevation-myocardial-infarction-a-nordistemi-substudy
#20
Trine Baur Opstad, Ingebjørg Seljeflot, Ellen Bøhmer, Harald Arnesen, Sigrun Halvorsen
OBJECTIVES: The extracellular matrix is involved in wound repair after acute myocardial infarction (AMI). We investigated whether matrix metalloproteinase (MMP)-9, tissue inhibitor of metalloproteinases (TIMP)-1, and the MMP inducer (EMMPRIN) are associated with infarct size, left ventricular function, and clinical outcome in ST-elevation-MI (STEMI). METHODS: In 243 STEMI patients, circulating EMMPRIN, MMP-9, and TIMP-1 were analyzed 3 days and 3 months post-AMI...
November 16, 2017: Cardiology
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