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https://www.readbyqxmd.com/read/28231595/-subjective-aspects-of-return-to-work-and-social-reintegration-in-patients-with-extensive-work-related-problems-in-cardiac-rehabilitation-results-of-a-qualitative-investigation
#1
C Schulz-Behrendt, A Salzwedel, S Rabe, K Ortmann, H Völler
This study investigated subjective biopsychosocial effects of coronary heart disease (CHD), coping strategies and social support in patients undergoing cardiac rehabilitation (CR) and having extensive work-related problems. A qualitative investigation was performed in 17 patients (48.9±7.0 y, 13 male) with extensive work-related problems (SIMBO-C>30). All patients were interviewed with structured surveys. Data analysis was performed using a software that is based on the content analysis approach of Mayring...
February 23, 2017: Die Rehabilitation
https://www.readbyqxmd.com/read/28231545/aqueous-extract-of-cortex-dictamni-protects-h9c2-cardiomyocytes-from-hypoxia-reoxygenation-induced-oxidative-stress-and-apoptosis-by-pi3k-akt-signaling-pathway
#2
Lin Li, Yunfeng Zhou, Yanlin Li, Lili Wang, Lan Sun, Lidong Zhou, Hiderori Arai, Yun Qi, Yang Xu
Ischemia-reperfusion injury is the major manifestation of ischemic heart disease, which facilitates cardiac arrhythmias, heart failure and death. Oxidative stress and apoptosis have been involved in the pathogenesis of myocardial ischemia-reperfusion injury. Modern pharmacological studies have indicated that the extracts and active compounds of Cortex Dictamni exhibit antioxidative and cardiovascular protective activities. This study was designed to investigate the protective effect of aqueous extract of Cortex Dictamni (CDAE) on regulating hypoxia/reoxygenation (H/R)-induced cardiomyocytes oxidative stress and apoptosis...
February 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28231509/a-single-injection-of-protein-loaded-coacervate-gel-significantly-improves-cardiac-function-post-infarction
#3
H K Awada, D W Long, Z Wang, M P Hwang, K Kim, Y Wang
After myocardial infarction (MI), the heart undergoes fibrotic pathological remodeling instead of repair and regeneration. With multiple pathologies developing after MI, treatment using several proteins is expected to address this range of pathologies more effectively than a single-agent therapy. A factorial design of experiments study guided us to combine three complementary factors in one injection: tissue inhibitor of metalloproteinases-3 (TIMP-3) was embedded in a fibrin gel for signaling in the initial phase of the treatment, while basic fibroblast growth factor (FGF-2) and stromal cell-derived factor 1-alpha (SDF-1α) were embedded in heparin-based coacervates for sustained release and distributed within the same fibrin gel to exert their effects over a longer period...
February 17, 2017: Biomaterials
https://www.readbyqxmd.com/read/28231436/myocardial-homing-of-mesenchymal-stem-cells-following-intrapericardial-application-and-amplification-by-inflammation-an-experimental-pilot-study
#4
Nina Jung, Heinz Rupp, Rembert Koczulla, Claus Vogelmeier, Peter Alter
Recent studies demonstrated potential effects of stem cells on cardiac function in heart failure. However, influences of the technique of application remained undetermined. In the present study, the pericardial sac was used as depot for fluorescent-labeled mesenchymal stem cells in rats. To evaluate influences of inflammation on cell homing, a sterile pericarditis was induced by talc. It is shown that intrapericardial stem cells application is sufficient to provide myocardial penetration. The extent of homing was amplified by inflammation in a talc-induced pericarditis...
February 23, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28231322/clinical-evaluation-of-new-automatic-coronary-specific-best-cardiac-phase-selection-algorithm-for-single-beat-coronary-ct-angiography
#5
Hui Wang, Lei Xu, Zhanming Fan, Junfu Liang, Zixu Yan, Zhonghua Sun
The aim of this study was to evaluate the workflow efficiency of a new automatic coronary-specific reconstruction technique (Smart Phase, GE Healthcare-SP) for selection of the best cardiac phase with least coronary motion when compared with expert manual selection (MS) of best phase in patients with high heart rate. A total of 46 patients with heart rates above 75 bpm who underwent single beat coronary computed tomography angiography (CCTA) were enrolled in this study. CCTA of all subjects were performed on a 256-detector row CT scanner (Revolution CT, GE Healthcare, Waukesha, Wisconsin, US)...
2017: PloS One
https://www.readbyqxmd.com/read/28231318/effects-of-na-channel-blockers-on-the-restitution-of-refractory-period-conduction-time-and-excitation-wavelength-in-perfused-guinea-pig-heart
#6
Oleg E Osadchii
Na+ channel blockers flecainide and quinidine can increase propensity to ventricular tachyarrhythmia, whereas lidocaine and mexiletine are recognized as safe antiarrhythmics. Clinically, ventricular fibrillation is often precipitated by transient tachycardia that reduces action potential duration, suggesting that a critical shortening of the excitation wavelength (EW) may contribute to the arrhythmic substrate. This study examined whether different INa blockers can produce contrasting effects on the rate adaptation of the EW, which would explain the difference in their safety profile...
2017: PloS One
https://www.readbyqxmd.com/read/28231026/late-administration-of-a-palladium-lipoic-acid-complex-poly-mva-modifies-cardiac-mitochondria-but-not-functional-or-structural-manifestations-of-radiation-induced-heart-disease-in-a-rat-model
#7
Vijayalakshmi Sridharan, John W Seawright, Francis J Antonawich, Merrill Garnett, Maohua Cao, Preeti Singh, Marjan Boerma
Exposure of the heart to ionizing radiation can cause adverse myocardial remodeling. In small animal models, local heart irradiation causes persistent alterations in cardiac mitochondrial function and swelling. POLY-MVA is a dietary supplement that contains a palladium lipoic acid complex that targets mitochondrial complex I and has been demonstrated to have greater redox potential than lipoic acid alone. POLY-MVA improves mitochondrial function and anti-oxidant enzyme activity in the aged rat heart. In this study, we tested whether POLY-MVA can mitigate cardiac effects of ionizing radiation...
February 23, 2017: Radiation Research
https://www.readbyqxmd.com/read/28230815/conceptual-foundations-of-systems-biology-explaining-complex-cardiac-diseases
#8
REVIEW
George E Louridas, Katerina G Lourida
Systems biology is an important concept that connects molecular biology and genomics with computing science, mathematics and engineering. An endeavor is made in this paper to associate basic conceptual ideas of systems biology with clinical medicine. Complex cardiac diseases are clinical phenotypes generated by integration of genetic, molecular and environmental factors. Basic concepts of systems biology like network construction, modular thinking, biological constraints (downward biological direction) and emergence (upward biological direction) could be applied to clinical medicine...
February 21, 2017: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230797/zyz-772-prevents-cardiomyocyte-injury-by-suppressing-nox4-derived-ros-production-and-apoptosis
#9
Ying Wang, Liangjie Zhong, Xinhua Liu, Yi Zhun Zhu
Nox-dependent signaling plays critical roles in the development of heart failure, cardiac hypertrophy, and myocardial infarction. NADPH oxidase 4 (Nox4) as a major source of oxidative stress in the heart offers a new therapeutic target in cardiovascular disease. In the present work, a novel flavonoid was isolated from Zanthoxylum bungeanum. Its structure was elucidated as Quercetin-3-O-(6''-O-α-l-rhamnopyransoyl)-β-d-glucopyranoside-7-O-β-d-glucopyranoside (ZYZ-772) for the first time. ZYZ-772 exhibited significant cardio-protective property against CoCl₂ induced H9c2 cardiomyocyte cells injury...
February 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28230770/vegfa-impacts-early-myocardium-development-in-zebrafish
#10
Diqi Zhu, Yabo Fang, Kun Gao, Jie Shen, Tao P Zhong, Fen Li
Vascular endothelial growth factor A (Vegfa) signaling regulates cardiovascular development. However, the cellular mechanisms of Vegfa signaling in early cardiogenesis remain poorly understood. The present study aimed to understand the differential functions and mechanisms of Vegfa signaling in cardiac development. A loss-of-function approach was utilized to study the effect of Vegfa signaling in cardiogenesis. Both morphants and mutants for vegfaa display defects in cardiac looping and chamber formation, especially the ventricle...
February 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28230173/a-novel-physiological-role-for-cardiac-myoglobin-in-lipid-metabolism
#11
Ulrike B Hendgen-Cotta, Sonja Esfeld, Cristina Coman, Robert Ahrends, Ludger Klein-Hitpass, Ulrich Flögel, Tienush Rassaf, Matthias Totzeck
Continuous contractile activity of the heart is essential and the required energy is mostly provided by fatty acid (FA) oxidation. Myocardial lipid accumulation can lead to pathological responses, however the underlying mechanisms remain elusive. The role of myoglobin in dioxygen binding in cardiomyocytes and oxidative skeletal muscle has widely been appreciated. Our recent work established myoglobin as a protector of cardiac function in hypoxia and disease states. We here unravel a novel role of cardiac myoglobin in governing FA metabolism to ensure the physiological energy production through β-oxidation, preventing myocardial lipid accumulation and preserving cardiac functions...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28229989/prenatal-diagnosis-of-right-dominant-heart-in-fetuses-a-tertiary-center-experience-over-a-7-year-period
#12
Juan Feng, Mei Zhu, Hao Liang, Qiao Li
BACKGROUND: Right dominant heart (RDH) in fetuses can occur with a number of cardiac as well as noncardiac anomalies. Analysis of the enlargement of the right cardiac chamber in the fetus remains a major challenge for sonographers and echocardiographers. The aim of this study was to report the experience with prenatal diagnosis of RDH in the fetuses over a 7-year period. METHODS: Fetuses with prenatal diagnosis of RDH from July 2009 to July 2016 were evaluated in two different categories: according to the gestational age, Group I (n = 154, second trimester) and Group II (n = 298, third trimester); and according to the fetal echocardiography diagnosis, Group A (n = 452, abnormal cardiac structure) and Group B (n = 90, normal cardiac structure)...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28229912/mid-diastolic-left-ventricular-volume-and-mass-normal-values-for-coronary-computed-tomography-angiography
#13
Daniel Juneau, Fernanda Erthal, Owen Clarkin, Atif Alzahrani, Ali Alenazy, Alomgir Hossain, Joao R Inacio, Girish Dwivedi, Alexander J Dick, Frank J Rybicki, Benjamin J W Chow
BACKGROUND: The adoption of prospectively ECG-triggered acquisition coronary computed tomography angiography (CTA) has resulted in the inability to measure left ventricle (LV) end-diastolic volume and LV ejection fraction. However other prognostic measures such as LV mass and LV mid-diastolic volume (LVMDV) can still be assessed. The objective of this study is to establish normal reference values for LVMDV and LV mass. METHODS: Left ventricular mid-diastolic volumes and LV mass were prospectively measured in 2647 consecutive 'normal' patients undergoing prospectively ECG-triggered coronary CTA...
February 10, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28229860/distinct-contributions-of-the-thin-and-thick-filaments-to-length-dependent-activation-in-heart-muscle
#14
Xuemeng Zhang, Thomas Kampourakis, Ziqian Yan, Ivanka Sevrieva, Malcolm Irving, Yin-Biao Sun
The Frank-Starling relation is a fundamental auto-regulatory property of the heart that ensures the volume of blood ejected in each heartbeat is matched to the extent of venous filling. At the cellular level, heart muscle cells generate higher force when stretched, but despite intense efforts the underlying molecular mechanism remains unknown. We applied a fluorescence-based method, which reports structural changes separately in the thick and thin filaments of rat cardiac muscle, to elucidate that mechanism...
February 23, 2017: ELife
https://www.readbyqxmd.com/read/28229826/changes-in-the-pattern-of-death-of-987-patients-with-systemic-sclerosis-from-1990-to-2009-from-the-nationwide-spanish-scleroderma-registry-rescle
#15
Manuel Rubio-Rivas, Carmen Pilar Simeón-Aznar, César Velasco, Begoña Marí-Alfonso, Gerard Espinosa, Xavier Corbella, Dolores Colunga-Argüelles, Maria Victoria Egurbide-Arberas, Norberto Ortego-Centeno, José Antonio Vargas-Hitos, Mayka Freire, Juan José Ríos-Blanco, Luis Trapiella-Martínez, Mónica Rodríguez-Carballeira, Vicent Fonollosa-Pla
OBJECTIVES: To determine the changes in the pattern of death of patients with systemic sclerosis (SSc) throughout 20 years. METHODS: Data were collected from the Spanish Scleroderma Registry (RESCLE), retrospective multicentre database from 1990 to 2009. SSc-related and SSc-non related causes of death were assessed. RESULTS: 987 patients were recruited. Overall standardised mortality ratio (SMR) was 2.34 (2.24-2.44). SSc-related causes of death were responsible of 72% of all deaths of those patients diagnosed within 1990-99 vs...
February 6, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28229823/cardiovascular-complications-in-paediatric-onset-systemic-lupus-erythematosus-in-saudi-arabian-patients
#16
Ahmad S Azhar, Omneyah Mohamed Awlia, Mohammed A Muzaffer
OBJECTIVES: To assess the prevalence and types of cardiovascular complications in Saudi patients with paediatric-onset systemic lupus erythematosus (pSLE). METHODS: Retrospective record review of pSLE patients following from January 2014 to September 2015 at the rheumatology clinic of King Abdul-Aziz University Hospital, Jeddah. Laboratory data such as C-reactive protein (CRP), antinuclear antibodies (ANA), anti-double stranded DNA antibody (anti-dsDNA), C3 and C4 complements, were collected...
February 10, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28229822/myocardial-performance-index-in-active-and-inactive-paediatric-systemic-lupus-erythematosus
#17
Anant Khositseth, Wasana Prangwatanagul, Kanchana Tangnararatchakit, Soamarat Vilaiyuk, Nantawan Su-Angka
OBJECTIVES: To evaluate cardiac structure and function in paediatric SLE patients without clinical evidence of cardiovascular disease in active and inactive diseases. METHODS: Patients aged ≤20 years who fulfilled the diagnostic criteria of active SLE underwent transthoracic echocardiography to evaluate cardiac structure and function, and were then followed up echocardiographically every 3-4 months until SLE disease was inactive. Patients with heart failure, myocarditis, pericarditis, endocarditis, coronary artery disease, or abnormal structural heart disease were excluded...
February 3, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28229640/effect-of-cerebrolysin-on-oxidative-stress-induced-apoptosis-in-an-experimental-rat-model-of-myocardial-ischemia
#18
V Boshra, A Atwa
Apoptosis plays a role in the process of tissue damage after myocardial infarction (MI). This study was designed to investigate the possible effect of cerebrolysin against apoptosis triggered by oxidative cell stress in myocardial ischemia induced by isoproterenol in rat. Rats were pretreated with cerebrolysin 5 mL/kg intraperitoneally for 7 days and intoxicated with isoproterenol (ISO, 85 mg/kg, sc) on the last 2 days. Hearts were excised and stained to detect the infarction size. Serum levels of cardiotoxicity indices as creatine kinase isoenzyme (CK-MB) and troponin I (cTnI) as well as the cardiac oxidative stress parameters as thiobarbituric acid reactive substances and superoxide dismutase were estimated...
September 2016: Physiol Int
https://www.readbyqxmd.com/read/28229427/stem-cell-exosomes-cell-freetherapy-for-organ-repair
#19
Mohsin Khan, Raj Kishore
Cardiovascular disease is a significant cause of morbidity and mortality around the world. The damaged cardiac tissue is unable to repair itself following injury warranting the development of alternate therapies. Cell therapy has emerged recently as a viable treatment option resulting in significant improvement in cardiac function. Nevertheless, donated stem cells are hard to find in the heart after transplantation leading to the hypothesis that release of extracellular factors by stem cells is primarily responsible for the beneficial effect of cell therapy...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28229419/echocardiography-guided-intramyocardial-injection-method-in-a-murine-model
#20
Kay Maeda, Rick Seymour, Marc Ruel, Erik J Suuronen
Cardiac regenerative therapy has received attention as a potentially revolutionary approach for treating the damaged heart. The mouse model of myocardial infarction (MI) remains one of the most common tools for the evaluation of such new therapies. Typically, intramyocardial administration of cells or biomaterials in mice is performed by an open-chest surgical procedure, but less invasive delivery methods are becoming available. Echocardiography-based transthoracic myocardial injection is one such minimally invasive approach that can reliably deliver therapeutics to the target site with limited complications and quick recovery for the animal following the procedure...
2017: Methods in Molecular Biology
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