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metabolism and heart failure

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https://www.readbyqxmd.com/read/28636647/hemodynamic-and-metabolic-characteristics-associated-with-development-of-a-right-ventricular-outflow-tract-pressure-gradient-during-upright-exercise
#1
Annelieke C M J van Riel, David M Systrom, Rudolf K F Oliveira, Michael J Landzberg, Barbara J M Mulder, Berto J Bouma, Bradley A Maron, Amil M Shah, Aaron B Waxman, Alexander R Opotowsky
BACKGROUND: We recently reported a novel observation that many patients with equal resting supine right ventricular(RV) and pulmonary artery(PA) systolic pressures develop an RV outflow tract(RVOT) pressure gradient during upright exercise. The current work details the characteristics of patients who develop such an RVOT gradient. METHODS: We studied 294 patients (59.7±15.5 years-old, 49% male) referred for clinical invasive cardiopulmonary exercise testing, who did not have a resting RVOT pressure gradient defined by the simultaneously measured peak-to-peak difference between RV and PA systolic pressures...
2017: PloS One
https://www.readbyqxmd.com/read/28633867/review-of-a-causal-role-of-fructose-containing-sugars-in-myocardial-susceptibility-to-ischemia-reperfusion-injury
#2
REVIEW
Gerald J Maarman, Amy E Mendham, Kim Lamont, Cindy George
In 2012, the World Health Organization Global Status Report on noncommunicable diseases showed that 7.4 million deaths were due to ischemic heart disease. Consequently, cardiovascular disease is a significant health burden, especially when partnered with comorbidities such as obesity, metabolic syndrome, and type 2 diabetes mellitus. Of note, these diseases can all be induced or exacerbated by diet. Carbohydrates, in particular, fructose and glucose, generally form the largest part of the human diet. Accumulating evidence from animal studies suggests that if large amounts of fructose are consumed either in isolation or in combination with glucose (fructose-containing sugars), myocardial susceptibility to ischemia/reperfusion (I/R) injury increases...
June 2017: Nutrition Research
https://www.readbyqxmd.com/read/28633205/advancing-the-science-of-myocardial-recovery-with-mechanical-circulatory-support-a-working-group-of-the-national-heart-lung-and-blood-institute
#3
EDITORIAL
Stavros G Drakos, Francis D Pagani, Martha S Lundberg, Timothy J Baldwin
The medical burden of heart failure (HF) has spurred interest in clinicians and scientists to develop therapies to restore the function of a failing heart. To advance this agenda, the National Heart, Lung, and Blood Institute (NHLBI) convened a Working Group of experts from June 2 to 3, 2016, in Bethesda, Maryland, to develop NHLBI recommendations aimed at advancing the science of cardiac recovery in the setting of mechanical circulatory support (MCS). MCS devices effectively reduce volume and pressure overload that drives the cycle of progressive myocardial dysfunction, thereby triggering structural and functional reverse remodeling...
July 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28631762/-safety-and-tolerability-of-oral-hypoglycemic-therapies-in-type-2-diabetes-mellitus-patients-at-high-cardiovascular-risk
#4
Giuseppe Ambrosio, Gaetano M De Ferrari, Massimo Federici, Pasquale Perrone Filardi
Oral hypoglycemic drugs for type 2 diabetes aim at preventing the metabolic effects of hyperglycemia and cardiovascular (CV) events. The evidence of the possible CV risk related to the prescription of some antidiabetic drugs prompted regulatory agencies to require safety studies. This review provides an updated analysis of CV safety profiles for antidiabetic drugs used for the treatment of patients with high CV risk.The most recent studies analyze different aspects of CV morbidity, such as ischemic events, heart failure and arrhythmia, and their interactions with hyperglycemia...
June 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28630913/an-innovative-biologic-system-for-photon-powered-myocardium-in-the-ischemic-heart
#5
Jeffrey E Cohen, Andrew B Goldstone, Michael J Paulsen, Yasuhiro Shudo, Amanda N Steele, Bryan B Edwards, Jay B Patel, John W MacArthur, Michael S Hopkins, Casey E Burnett, Kevin J Jaatinen, Akshara D Thakore, Justin M Farry, Vi N Truong, Alexandra T Bourdillon, Lyndsay M Stapleton, Anahita Eskandari, Alexander S Fairman, William Hiesinger, Tatiana V Esipova, William L Patrick, Keven Ji, Judith A Shizuru, Y Joseph Woo
Coronary artery disease is one of the most common causes of death and disability, afflicting more than 15 million Americans. Although pharmacological advances and revascularization techniques have decreased mortality, many survivors will eventually succumb to heart failure secondary to the residual microvascular perfusion deficit that remains after revascularization. We present a novel system that rescues the myocardium from acute ischemia, using photosynthesis through intramyocardial delivery of the cyanobacterium Synechococcus elongatus...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28629587/microparticles-in-chronic-heart-failure
#6
Alexander E Berezin
Heart failure (HF) continues to have a sufficient impact on morbidity, mortality, and disability in developed countries. Growing evidence supports the hypothesis that microparticles (MPs) might contribute to the pathogenesis of the HF development playing a pivotal role in the regulation of the endogenous repair system, thrombosis, coagulation, inflammation, immunity, and metabolic memory phenomenon. Therefore, there is a large body of data clarifying the predictive value of MP numerous in circulation among subjects with HF...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28629552/comparative-analysis-of-four-scores-to-stratify-patients-with-heart-failure-and-reduced-ejection-fraction
#7
Pedro Freitas, Carlos Aguiar, António Ferreira, António Tralhão, António Ventosa, Miguel Mendes
There are several prognostic risk scores available for patients with heart failure with reduced ejection fraction (HFrEF) that can aid in the decision of listing candidates for heart transplant (HTx). A direct comparison between these scores has not been performed. Therefore, our objective was to evaluate the calibration and discriminative power of 4 contemporary HF scores. A retrospective analysis of 259 patients with HFrEF who underwent cardiopulmonary exercise test was conducted. The Heart Failure Survival Score (HFSS), Seattle Heart Failure Model (SHFM), Meta-analysis Global Group in Chronic Heart Failure (MAGGIC), and Metabolic Exercise Cardiac Kidney Index (MECKI) were compared...
May 11, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28628626/is-normal-tension-glaucoma-a-risk-factor-for-stroke-a-10-year-follow-up-study
#8
Meng-Sheng Lee, Li-Lin Kuo, Elise Chia-Hui Tan, Oscar K Lee
OBJECTIVES: To investigate whether patients with normal-tension glaucoma (NTG) have a higher incidence of stroke. DESIGN: A population-based retrospective cohort study based on data from the Taiwan National Health Insurance Research Database (NHIRD) from January 1, 2001, to December 31, 2010. METHODS: Data were retrospectively collected from the NHIRD. A total of 245 (20.1%) patients with a history of stroke at the time of glaucoma diagnosis were excluded, and 1,218 patients with NTG who were 20 years of age and older were identified...
2017: PloS One
https://www.readbyqxmd.com/read/28628000/epigenetics-inflammation-and-metabolism-in-right-heart-failure-associated-with-pulmonary-hypertension
#9
Nolwenn Samson, Roxane Paulin
Right ventricular failure (RVF) is the most important prognostic factor for both morbidity and mortality in pulmonary arterial hypertension (PAH), but also occurs in numerous other common diseases and conditions, including left ventricle dysfunction. RVF remains understudied compared with left ventricular failure (LVF). However, right and left ventricles have many differences at the morphological level or the embryologic origin, and respond differently to pressure overload. Therefore, knowledge from the left ventricle cannot be extrapolated to the right ventricle...
June 19, 2017: Pulmonary Circulation
https://www.readbyqxmd.com/read/28627685/metabolomic-analysis-based-on-1h-nuclear-magnetic-resonance-spectroscopy-metabolic-profiles-in-tuberculous-malignant-and-transudative-pleural-effusion
#10
Cheng Wang, Jingjin Peng, Yanling Kuang, Jiaqiang Zhang, Luming Dai
Pleural effusion is a common clinical manifestation with various causes. Current diagnostic and therapeutic methods have exhibited numerous limitations. By involving the analysis of dynamic changes in low molecular weight catabolites, metabolomics has been widely applied in various types of disease and have provided platforms to distinguish many novel biomarkers. However, to the best of our knowledge, there are few studies regarding the metabolic profiling for pleural effusion. In the current study, 58 pleural effusion samples were collected, among which 20 were malignant pleural effusions, 20 were tuberculous pleural effusions and 18 were transudative pleural effusions...
June 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28624653/giant-ring-mitochondria-in-a-patient-with-heart-failure-and-cerebral-white-matter-disease-due-to-mt-tl1-mitochondrial-gene-mutation
#11
Brian A Houston, Daniel P Judge, Emily Brown, Marc Halushka, Lili A Barouch
BACKGROUND: The presence of giant ring mitochondria on endomyocardial biopsy is rarely reported and does not have a well-defined differential diagnosis. METHODS: We report the case of a 54-year-old man with heart failure with preserved ejection fraction and left ventricular hypertrophy, initially thought to have an infiltrative cardiomyopathy. RESULTS: The patient was found to have extensive vacuolization caused by the presence of giant ring mitochondria on endomyocardial biopsy...
June 14, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28623525/comparison-of-czt-spect-and-conventional-spect-for-assessment-of-contractile-function-mechanical-synchrony-and-myocardial-scar-in-patients-with-heart-failure
#12
Dayong Wu, Zongyao Zhang, Rongzheng Ma, Feng Guo, Lei Wang, Wei Fang
AIM: The aim of this study was to compare CZT-SPECT (CZT SPECT) to conventional SPECT (C-SPECT) in the assessment of left ventricular myocardial scar, contractile function, and mechanical synchrony in patients with heart failure (HF). METHODS: Fifty-nine patients with HF who were referred for myocardial perfusion/metabolism imaging were enrolled. All patients underwent resting (99m)Tc-MIBI gated myocardial perfusion imaging using a CZT SPECT camera and a C-SPECT camera, respectively, and (18)F-FDG PET myocardial metabolism imaging within three days...
June 16, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28620607/metabolic-and-biochemical-stressors-in-diabetic-cardiomyopathy
#13
REVIEW
Vasundhara Kain, Ganesh V Halade
Diabetic cardiomyopathy (DCM) or diabetes-induced cardiac dysfunction is a direct consequence of uncontrolled metabolic syndrome and is widespread in US population and worldwide. Despite of the heterogeneous and distinct features of DCM, the clinical relevance of DCM is now becoming established. DCM progresses to pathological cardiac remodeling with the higher risk of heart attack and subsequent heart failure in diabetic patients. In this review, we emphasize lipid substrate quality and the phenotypic, metabolic, and biochemical stressors of DCM in the rodent and human pathophysiology...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28612009/cardiac-cell-senescence-and-redox-signaling
#14
REVIEW
Daniela Cesselli, Aneta Aleksova, Sandro Sponga, Celeste Cervellin, Carla Di Loreto, Gianluca Tell, Antonio Paolo Beltrami
Aging is characterized by a progressive loss of the ability of the organism to cope with stressors and to repair tissue damage. As a result, chronic diseases, including cardiovascular disease, increase their prevalence with aging, underlining the existence of common mechanisms that lead to frailty and age-related diseases. In this frame, the progressive decline of the homeostatic and reparative function of primitive cells has been hypothesized to play a major role in the evolution of cardiac pathology to heart failure...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28611091/inhibition-of-microrna-146a-and-overexpression-of-its-target-dihydrolipoyl-succinyltransferase-protect-against-pressure-overload-induced-cardiac-hypertrophy-and-dysfunction
#15
Ward A Heggermont, Anna-Pia Papageorgiou, Annelies Quaegebeur, Sophie Deckx, Paolo Carai, Wouter Verhesen, Guy Eelen, Sandra Schoors, Rick van Leeuwen, Sergey Alekseev, Ies Elzenaar, Stefan Vinckier, Peter Pokreisz, Ann-Sophie Walravens, Rik Gijsbers, Chris Van Den Haute, Alexander G Nickel, Blanche Schroen, Marc van Bilsen, Stefan Janssens, Christoph Maack, Yigal M Pinto, Peter Carmeliet, Stephane Heymans
Background -Cardiovascular diseases remain the predominant cause of death worldwide, with the prevalence of heart failure continuing to increase. Despite increased knowledge of the metabolic alterations that occur in heart failure, novel therapies to treat the observed metabolic disturbances are still lacking. Methods -Mice were subjected to pressure overload by means of angiotensin-II infusion or transversal aortic constriction (TAC). MicroRNA-146a was either genetically or pharmacologically knocked out, or genetically overexpressed in cardiomyocytes...
June 13, 2017: Circulation
https://www.readbyqxmd.com/read/28610806/heart-failure-in-patients-with-kidney-disease-and-iron-deficiency-the-role-of-iron-therapy
#16
Aleix Cases Amenós, Raquel Ojeda López, José María Portolés Pérez
Chronic kidney disease and anaemia are common in heart failure (HF) and are associated with a worse prognosis in these patients. Iron deficiency is also common in patients with HF and increases the risk of morbidity and mortality, regardless of the presence or absence of anaemia. While the treatment of anaemia with erythropoiesis-stimulating agents in patients with HF have failed to show a benefit in terms of morbidity and mortality, treatment with IV iron in patients with HF and reduced ejection fraction and iron deficiency is associated with clinical improvement...
June 10, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28607162/impact-of-age-on-the-association-between-cardiac-high-energy-phosphate-metabolism-and-cardiac-power-in-women
#17
Maria Nathania, Kieren G Hollingsworth, Matthew Bates, Christopher Eggett, Michael I Trenell, Lazar Velicki, Petar M Seferovic, Guy A MacGowan, Doug M Turnbull, Djordje G Jakovljevic
OBJECTIVE: Diminished cardiac high-energy phosphate metabolism (phosphocreatine-to-ATP (PCr:ATP) ratio) and cardiac power with age may play an important roles in development of cardiac dysfunction and heart failure. The study defines the impact of age on PCr:ATP ratio and cardiac power and their relationship. METHODS: Thirty-five healthy women (young≤50 years, n=20; and old≥60 years, n=15) underwent cardiac MRI with (31)P spectroscopy to assess PCr:ATP ratio and performed maximal graded cardiopulmonary exercise testing with simultaneous gas-exchange and central haemodynamic measurements...
June 12, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28606340/cardiovascular-protection-in-the-treatment-of-type-2-diabetes-a%C3%A2-review-of-clinical-trial-results-across-drug-classes
#18
Francesco Paneni, Thomas F Lüscher
Patients with type 2 diabetes (T2DM) have a significantly higher risk of developing cardiovascular disease (CVD)-namely myocardial infarction, heart failure, and stroke. Despite clear advances in the prevention and treatment of CVD, the impact of T2DM on CVD outcome remains high and continues to escalate. Available evidence indicates that the risk of macrovascular complications increases with the severity of hyperglycemia, thus suggesting that the relation between metabolic disturbances and vascular damage is approximately linear...
July 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28602121/frailty-and-risk-of-cardiovascular-diseases-in-older-persons-the-age-gene-environment-susceptibility-reykjavik-study
#19
Nicola Veronese, Kristin Sigeirsdottir, Gudny Eiriksdottir, Elisa Marques, Didier Chalhoub, Caroline Phillips, Lenore Launer, Stefania Maggi, Vilmundur Gudnason, Tamara B Harris
Frailty is a risk factor for cardiovascular diseases (CVD), but the studies available have not considered the presence of sub-clinical atherosclerotic disease as potential confounders. We investigated the association between frailty and the onset of CVD independently of sub-clinical atherosclerotic disease. For this reason, a sample of 3818 older participants participating in the Age, Gene/Environment SusceptibilityReykjavik Study (AGESReykjavik) without CVD at baseline was followed for a median of 8...
June 10, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/28596512/paricalcitol-as-an-antiproteinuric-agent-can-result-in-the-deterioration-of-renal-and-heart-function-in-a-patient-with-fabry-disease
#20
Tajda Keber, Martin Tretjak, Andreja Cokan Vujkovac, Marija Mravljak, Katja Ravber, Bojan Vujkovac
BACKGROUND Fabry disease is a rare and progressive X-linked inherited disorder of glycosphingolipid metabolism that is due to deficient or absent lysosomal a-galactosidase A activity. Among its other associated signs and symptoms, patients present with renal failure and proteinuria, which are markers of disease progression. Renin-angiotensin-aldosterone system (RAAS) blockers can slow the progression of chronic renal failure and proteinuria. In fact, some studies have shown the beneficial effects of paricalcitol on proteinuria...
June 9, 2017: American Journal of Case Reports
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