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https://www.readbyqxmd.com/read/27911394/confirmation-of-myocardial-ischemia-and-reperfusion-injury-in-mice-using-surface-pad-electrocardiography
#1
Stephanie L C Scofield, Krishna Singh
Many animal models have been established for the study of myocardial remodeling and heart failure due to its status as the number one cause of mortality worldwide. In humans, a pathologic occlusion forms in a coronary artery and reperfusion of that occluded artery is considered essential to maintain viability of the myocardium at risk. Although essential for myocardial recovery, reperfusion of the ischemic myocardium creates its own tissue injury. The physiologic response and healing of an ischemia/reperfusion injury is different from a chronic occlusion injury...
November 24, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27894321/encephalomyocarditis-virus-infection-in-macaca-sylvanus-and-hystrix-cristata-from-an-italian-rescue-centre-for-wild-and-exotic-animals
#2
Giusy Cardeti, Valeria Mariano, Claudia Eleni, Marco Aloisi, Goffredo Grifoni, Stefania Sittinieri, Giampiero Dante, Valeria Antognetti, Efrem Alessandro Foglia, Antonella Cersini, Alberigo Nardi
BACKGROUND: The Encephalomyocarditis virus (EMCV) is a small, non enveloped, positive sense single-stranded RNA virus in the genus Cardiovirus, family Picornaviridae, with two known serotypes. It is spread worldwide and infects a huge range of vertebrate hosts with zoonotic potential for humans. The pig is the mammal most likely to be impacted on with the disease, but EMCV occurrence has also been reported in non-human primates and in a variety of domestic, captive and wild animals. Until now, human cases have been very rare and the risk appears to be almost negligible in spite of human susceptibility to the infection...
November 28, 2016: Virology Journal
https://www.readbyqxmd.com/read/27893526/effect-of-oxygen-therapy-on-myocardial-salvage-in-st-elevation-myocardial-infarction-the-randomized-soccer-trial
#3
Ardavan Khoshnood, Marcus Carlsson, Mahin Akbarzadeh, Pallonji Bhiladvala, Anders Roijer, David Nordlund, Peter Höglund, David Zughaft, Lizbet Todorova, Arash Mokhtari, Håkan Arheden, David Erlinge, Ulf Ekelund
OBJECTIVE: Recent studies suggest that administration of O2 in patients with acute myocardial infarction may have negative effects. With the use of cardiac MRI (CMR), we evaluated the effects of supplemental O2 in patients with ST elevation myocardial infarction (STEMI) accepted for acute percutaneous coronary intervention (PCI). MATERIALS AND METHODS: This study was a randomized-controlled trial conducted at two university hospitals in Sweden. Normoxic STEMI patients were randomized in the ambulance to either supplemental O2 (10 l/min) or room air until the conclusion of the PCI...
November 23, 2016: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
https://www.readbyqxmd.com/read/27890444/t2-weighted-cardiovascular-magnetic-resonance-imaging-to-delineate-ischemic-myocardium-at-risk-fact-or-fiction
#4
Thomas Stiermaier, Holger Thiele, Ingo Eitel
No abstract text is available yet for this article.
November 24, 2016: Revista Española de Cardiología
https://www.readbyqxmd.com/read/27830098/a-pregnancy-with-severe-hypertrophic-obstructive-cardiomyopathy-after-surgery-for-an-implantable-cardioverter-defibrillator-a-case-report-and-literature-review
#5
Takashi Mitsui, Hisashi Masuyama, Kentaro Ejiri, Kei Hayata, Hiroshi Ito, Yuji Hiramatsu
Hypertrophic obstructive cardiomyopathy (HOCM) is cardiac hypertrophy of ventricular myocardium with left ventricular outflow tract obstruction. We report a pregnancy with HOCM after defibrillator implantation surgery. The patient was a 33-year-old nulligravida and was categorized as New York Heart Association class II. Her brain natriuretic peptide (BNP) level was 724.6 pg/dL at preconception. She received careful pregnancy management. However, because frequent uterine contractions were observed at 25 weeks and 6 days of pregnancy, she was hospitalized, and magnesium sulfate was started as a tocolytic agent...
2016: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27826336/the-association-between-whole-blood-viscosity-and-coronary-collateral-circulation-in-patients-with-chronic-total-occlusion
#6
Mehmet Serkan Cetin, Elif Hande Ozcan Cetin, Kevser Gülcihan Balcı, Selahattin Aydin, Emek Ediboglu, Muhammed Fatih Bayraktar, Mustafa Mücahit Balcı, Orhan Maden, Ahmet Temizhan, Sinan Aydogdu
BACKGROUND AND OBJECTIVES: Coronary collateral circulation (CCC) has been attributed as inborn bypass mechanisms supporting ischemic myocardium. Various factors have been postulated in CCC. Whole blood viscosity (WBV) has been an underappreciated entity despite close relationships between multiple cardiovascular diseases. WBV can be calculated with a validated equation from hematocrit and total plasma protein levels for a low and high shear rate. On the grounds, we aimed to evaluate the association between WBV and CCC in patients with chronic total occlusion...
November 2016: Korean Circulation Journal
https://www.readbyqxmd.com/read/27823695/effect-of-remote-ischemic-conditioning-on-infarct-size-in-patients-with-anterior-st-elevation-myocardial-infarction
#7
Dinos Verouhis, Peder Sörensson, Andrey Gourine, Loghman Henareh, Jonas Persson, Nawzad Saleh, Magnus Settergren, Martin Sundqvist, Per Tornvall, Nils Witt, Felix Böhm, John Pernow
BACKGROUND: Previous studies indicate that remote ischemic conditioning performed before percutaneous coronary intervention (PCI) reduces infarct size in patients with ST-elevation myocardial infarction (STEMI). It remains unclear whether remote conditioning affords protection when performed in adjunct to primary PCI. We aimed to study whether remote ischemic per-postconditioning (RIperpostC) initiated after admission to the catheterization laboratory attenuates myocardial infarct size in patients with anterior STEMI...
November 2016: American Heart Journal
https://www.readbyqxmd.com/read/27822383/neuronal-nitric-oxide-synthase-in-hypertension-an-update
#8
REVIEW
Yin Hua Zhang
Hypertension is a prevalent condition worldwide and is the key risk factor for fatal cardiovascular complications, such as stroke, sudden cardiac death and heart failure. Reduced bioavailability of nitric oxide (NO) in the endothelium is an important precursor for impaired vasodilation and hypertension. In the heart, NO deficiency deteriorates the adverse consequences of pressure-overload and causes cardiac hypertrophy, fibrosis and myocardial infarction which lead to fatal heart failure and sudden cardiac death...
2016: Clinical Hypertension
https://www.readbyqxmd.com/read/27811932/thyroid-hormones-and-cardiovascular-disease
#9
REVIEW
Avais Jabbar, Alessandro Pingitore, Simon H S Pearce, Azfar Zaman, Giorgio Iervasi, Salman Razvi
Myocardial and vascular endothelial tissues have receptors for thyroid hormones and are sensitive to changes in the concentrations of circulating thyroid hormones. The importance of thyroid hormones in maintaining cardiovascular homeostasis can be deduced from clinical and experimental data showing that even subtle changes in thyroid hormone concentrations - such as those observed in subclinical hypothyroidism or hyperthyroidism, and low triiodothyronine syndrome - adversely influence the cardiovascular system...
November 4, 2016: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/27789556/protective-effects-of-ticagrelor-on-myocardial-injury-after-infarction
#10
Gemma Vilahur, Manuel Gutierrez, Laura Casani, Lourdes Varela, Antoni Capdevila, Guillem Pons-Lladó, Francesc Carreras, Leif Carlsson, Alberto Hidalgo, Lina Badimon
BACKGROUND: -The P2Y12 receptor antagonist ticagrelor has shown to be clinically superior to clopidogrel. Although the underlying mechanisms remain elusive, ticagrelor may exert off-target effects through adenosine-related mechanisms. We sought to investigate whether ticagrelor reduces myocardial injury to a greater extent than clopidogrel after myocardial infarction (MI) at similar level of platelet inhibition and determine the mechanisms behind. METHODS: -Pigs received prior to MI-induction: I) placebo-control; II) a loading dose (LD) of clopidogrel (600mg); III) a LD of ticagrelor (180mg); or IV) a LD of ticagrelor followed by an adenosine A1/A2-receptor antagonist (8-p-sulfophenyl-theophylline; 8SPT, 4mg/kg intravenous) to determine the potential contribution of adenosine in ticagrelor-related cardioprotection...
October 27, 2016: Circulation
https://www.readbyqxmd.com/read/27777114/myocardial-bridges-neither-rare-nor-isolated-autopsy-study
#11
G Teofilovski-Parapid, R Jankovic, V Kanjuh, R Virmani, N Danchin, N Prates, D V Simic, B Parapid
PURPOSE: Myocardial bridge is a congenital anomaly with a markedly variable reported incidence on autopsy (4.7%-86%), likely related to geographical regions. Our previous retrospective study showed a prevalence of 0.8%, which we doubted to be the true one in the examined sample of the Serbian population. To assess the importance of the phenomenon we conducted a 2-year prospective study at the same institution. METHODS: Ninety-six cadaver hearts from adult individuals of both genders (51 men, 45 women) who died from natural causes underwent special dissection...
October 21, 2016: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/27772640/intensive-hemodialysis-mineral-and-bone-disorder-and-phosphate-binder-use
#12
Michael Copland, Paul Komenda, Eric D Weinhandl, Peter A McCullough, Jose A Morfin
Mineral and bone disorder is a common complication of end-stage renal disease. Notably, hyperphosphatemia likely promotes calcification of the myocardium, valves, and arteries. Hyperphosphatemia is associated with higher risk for cardiovascular mortality and morbidity along a gradient beginning at 5.0mg/dL. Among contemporary hemodialysis (HD) patients, mean serum phosphorus level is 5.2mg/dL, although 25% of patients have serum phosphorus levels of 5.5 to 6.9mg/dL; and 13%, >7.0mg/dL. Treatment of hyperphosphatemia is burdensome...
November 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/27770663/low-protein-z-plasma-level-is-a-risk-factor-for-acute-myocardial-infarction-in-coronary-atherosclerosis-disease-patients
#13
Baoxin Liu, Yong Li, Jiachen Luo, Liming Dai, Jinlong Zhao, Hongqiang Li, Qiqiang Jie, Dongzhi Wang, Xin Huang, Yidong Wei
OBJECTIVES: To examine plasma protein Z (PZ) levels in acute myocardial infarction (AMI) and chronic coronary atherosclerosis disease (CCAD) patients without history of AMI and explore its potential clinical significance. METHODS: Plasma PZ concentrations were measured in 90 AMI patients (Group A), 87 CCAD patients without AMI history who remained free of major clinical events at least one year (Group B), and 88 clinically healthy controls (Group C). RESULTS: PZ was found to be significantly lower (P<0...
October 13, 2016: Thrombosis Research
https://www.readbyqxmd.com/read/27765360/kampeferol-protects-against-oxidative-stress-and-apoptotic-damage-in-experimental-model-of-isoproterenol-induced-cardiac-toxicity-in-rats
#14
Kapil Suchal, Salma Malik, Nanda Gamad, Rajiv Kumar Malhotra, Sameer N Goyal, Jagriti Bhatia, Dharamvir Singh Arya
BACKGROUND: Myocardial infarction (MI) continues to be associated with high morbidity and mortality worldwide despite the availability of current therapeutic modalities. Kaempferol (KMP), a dietary flavonoid, possesses good antioxidant, immunomodulatory and anti-apoptotic properties and has been evaluated in the present study for its role in mitigating myocardial injury following MI. PURPOSE: In this study, the ability of KMP to protect heart against isoproterenol (ISO) induced oxidative stress and myocardial infarction was evaluated...
November 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27765302/impact-of-operator-experience-and%C3%A2-volume-on-outcomes-after-left%C3%A2-main%C3%A2-coronary-artery-percutaneous%C3%A2-coronary-intervention
#15
Bo Xu, Björn Redfors, Yuejin Yang, Shubin Qiao, Yongjian Wu, Jilin Chen, Haibo Liu, Jue Chen, Liang Xu, Yanyan Zhao, Changdong Guan, Runlin Gao, Philippe Généreux
OBJECTIVES: The aim of this study was to assess the impact of operator experience on prognosis after left main coronary artery (LM) percutaneous coronary intervention (PCI). BACKGROUND: LM PCI can be technically challenging and potentially risky considering the amount of supplied myocardium. METHODS: Consecutive patients who underwent unprotected LM PCI at a single institution were included and compared according to whether the primary operator was an experienced, high-volume LM operator (defined as an operator who performed at least 15 LM PCIs per year for at least 3 consecutive years) or not...
October 24, 2016: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/27754190/sp-05-3-does-the-sprint-trial-change-the-target-blood-pressure-in-the-elderly
#16
Clive Rosendorff
Many guidelines for the management of hypertension have recommended that the goal of antihypertensive treatment in the elderly (usually specified as 80 years or above) should be less than 150/90 mmHg. SPRINT included subjects 50 years or above, and a substantial proportion of subjects 75 years and older. These are individuals at high risk for adverse cardiovascular events because of high prevalence of hypertension and atherosclerotic disease. The less stringent BP goals have been based on a percieved danger of lowering BP to levels that threaten vital organ pefusion (myocardium, brain, kidney)...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27753819/ssa-06-4-risk-factors-and-compliance-at-hypertensives-west-siberia-residents
#17
Davyd Yakhontov
OBJECTIVE: To study the risk factors (RF) prevalence and compliance in hypertension (Ht) associated with coronary artery diseases (CAD) pts - West Siberia residents. MATERIAL AND METHOD: 151 pts with Ht grade 1-3 and stable angina 54,8 ± 0,7 years old divided in 3 groups. The 1 group included 43 Ht pts with uncomplicated angina and intact coronary arteries, the 2 group - 47 Ht pts with angina and percutaneous coronary intervention last 1-3 years, the 3 group - 61 Ht pts with myocardial infarction (MI) or stroke last 1-3 years...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27729666/-peripartum-spontaneous-coronary-artery-dissection-a-case-report
#18
Giovanni Teruzzi, Giuseppe Calligaris, Paolo Ravagnani, Daniela Trabattoni, Luca Grancini, Giovanni Monizzi, Alessandro Lualdi, Antonio L Bartorelli
Spontaneous coronary artery dissection (SCAD) accounts approximately for 0.2% of cases of acute coronary syndrome. It is defined "spontaneous" in absence of any coronary wall damage. This disease affects primarily young women in good health, with no risk factors for coronary artery disease, especially during the postpartum period. Since the clinical presentation varies widely from no symptoms to typical angina and sudden cardiac death, SCAD incidence is underestimated.A 40-year-old woman, in the 8th week after delivery, was admitted to our emergency department because of acute chest pain, and a diagnosis of inferior and posterior non-ST-elevation myocardial infarction was made...
October 2016: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/27701829/the-vhot-vindaloo-hastens-outpouring-of-troponins-study
#19
Alan S Tankel, Yusuf Nagree, Peter Jones, David Mountain, Stephen Pj Macdonald, Paul Hill, Martin Than
BACKGROUND: Multiple cardiac and non-cardiac processes may cause an elevated highly sensitive troponin (hsTn). We postulated that the consumption of a seriously hot vindaloo could cause an increase in hsTn levels in seemingly healthy volunteers. OBJECTIVE: To determine whether eating a very hot curry can cause elevated hsTn. METHODS: This was a prospective observational cohort study. Participants had blood drawn for hsTn pre-ingestion and at 2 and 4 h post-ingestion of, first, a rather mild butter chicken and, 2 weeks later, a seriously hot lamb vindaloo...
October 4, 2016: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/27668913/interventricular-septal-pseudoaneurysm-after-blunt-chest-trauma-in-a-6-year-old-an-illustrative-case-and-review
#20
Natalie Behrle, Peter Dyke, Abdallah Dalabih
Motor vehicle accident is the most common cause of blunt cardiac injury (BCI) in children (85.3%) due to the height of the child in relation to proper restraints and the compliant pediatric rib cage (J Trauma. 1996;40:200-202). Trauma to the chest wall may lead to injury of the myocardium, resulting in myocardial contusion, ventricular septal defect (VSD), ventricular free wall rupture, or valve compromise (J Trauma. 1996;40; 200-202; Heart Lung. 2012;41:200-202; J Inj Violence Res. 2012;4:98-100). There are several proposed mechanisms for the formation of VSD after blunt chest trauma including rupture of ischemic myocardium related to the initial trauma and reopening of a spontaneously closed congenital VSD...
September 23, 2016: Pediatric Emergency Care
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