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metabolism and heart failure

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https://www.readbyqxmd.com/read/28228301/shoshin-beriberi-thiamine-responsive-pulmonary-hypertension-in-exclusively-breastfed-infants-a-study-from-northern-india
#1
Javeed Iqbal Bhat, Hilal Ahmad Rather, Ambreen Ali Ahangar, Umar Amin Qureshi, Parvez Dar, Qazi Iqbal Ahmed, Bashir Ahmed Charoo, Syed Wajid Ali
OBJECTIVE: To study the effect of thiamine administration on the resolution of pulmonary hypertension in exclusively breastfed infants. DESIGN: Prospective cohort study. SETTING: Hospital based study of a tertiary care hospital. PATIENTS: A total of 29 infants with 17 males (58.6%) and 12 females (41.4%) were included in the study. INTERVENTION: In addition to the management of shock, right heart failure and renal failure, patients received intravenous thiamine 100mg/kg IV followed by 10mg/day till introduction of supplementary feeds...
January 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28223818/an-evidence-based-review-on-urate-lowering-treatments-implications-for-optimal-treatment-of-chronic-hyperuricemia
#2
REVIEW
Marilisa Bove, Arrigo Francesco Giuseppe Cicero, Maddalena Veronesi, Claudio Borghi
Several studies suggest that chronic hyperuricemia, the main precursor of gout, is involved in the pathogenesis of different systemic disorders that affect cardiovascular and renal systems, such as hypertension, obesity, hypercholesterolemia, atherosclerosis, metabolic syndrome, chronic heart failure, and chronic kidney disease. Recent epidemiological evidence has shown an increasing trend in the prevalence of hyperuricemia and gout in the Western world: a number of population-based studies estimate a prevalence of up to 21% for hyperuricemia and 1%-4% for gout...
2017: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/28222634/intermittent-levosimendan-infusions-in-advanced-heart-failure-a-real-world-experience
#3
Benedetta Ortis, Alessandra Villani, Matteo Oldani, Alessia Giglio, Francesca Ciambellotti, Mario Facchini, Gianfranco Parati, Gabriella Malfatto
Objective To analyse the effects of levosimendan infusions in advanced heart failure. Methods Patients with advanced heart failure treated with repeated levosimendan infusions were retrospectively compared with controls. Clinical, blood and echocardiographic parameters were obtained at baseline and after 12 months, and before and after each levosimendan infusion. Hospitalizations for heart failure and in-hospital length of stay in the 6 months before enrolment and after 6 and 12 months were recorded, along with 1-year mortality...
February 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28217306/sexual-function-of-patients-with-heart-failure-facts-and-numbers
#4
EDITORIAL
Tiny Jaarsma
Approximately 60% to 87% of patients with heart failure (HF) report sexual problems, and numbers as low as 31% of HF patients younger than 70 have normal sexual function. When compared with healthy elders, the amount of perceived sexual dysfunction might be similar (around 56%), but patients with HF are reporting more erectile dysfunction (ED) and also perceive that their HF symptoms (20%) or HF medication (10%) is the cause for their problems. The prevalence of ED is highly prevalent in men with cardiac disease and reported in up to 81% of cardiac patients, compared with 50% in the general older population...
February 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28216453/quantification-of-myocardial-oxygenation-in-heart-failure-using-blood-oxygen-level-dependent-t2-magnetic-resonance-imaging-comparison-with-cardiopulmonary-exercise-test
#5
Michinobu Nagao, Yuzo Yamasaki, Satoshi Kawanami, Takeshi Kamitani, Koji Sagiyama, Taiki Higo, Tomomi Ide, Atsushi Takemura, Umiko Ishizaki, Kenji Fukushima, Yuji Watanabe, Hiroshi Honda
PURPOSE: Quantification of myocardial oxygenation (MO) in heart failure (HF) has been less than satisfactory. This has necessitated the use of invasive techniques to measure MO directly or to determine the oxygen demand during exercise using the cardiopulmonary exercise (CPX) test. We propose a new quantification method for MO using blood-oxygen-level-dependent (BOLD) myocardial T2* magnetic resonance imaging (M-T2* MRI), and investigate its correlation with CPX results. METHODS: Thirty patients with refractory HF who underwent cardiac MRI and CPX test for heart transplantation, and 24 healthy, age-matched volunteers as controls were enrolled...
February 16, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28209386/dietary-therapy-in-heart-failure-with-preserved-ejection-fraction-and-or-left-ventricular-diastolic-dysfunction-in-patients-with-metabolic-syndrome
#6
REVIEW
Helene von Bibra, Alexander Ströhle, Martin St John Sutton, Nicolai Worm
BACKGROUND: Heart failure is an ongoing epidemic of left ventricular (LV) dilatation and/or dysfunction due to the increasing prevalence of predisposing risk factors such as age, physical inactivity, (abdominal) obesity, and type-2-diabetes. Approximately half of these patients have diastolic heart failure (HFpEF). The prognosis of HFpEF is comparable to that of systolic heart failure, but without any known effective treatment. DIASTOLIC DYSFUNCTION: A biomathematically corrected diagnostic approach is presented that quantifies diastolic dysfunction via the predominant age dependency of LV diastolic function and unmasks (metabolic) risk factors, that are independent of age and, therefore, potential targets for therapy...
January 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28209222/roles-of-angiotensin-peptides-and-recombinant-human-ace2-in-heart-failure
#7
Ratnadeep Basu, Marko Poglitsch, Haran Yogasundaram, Jissy Thomas, Brian H Rowe, Gavin Y Oudit
BACKGROUND: The renin-angiotensin system (RAS) is activated in heart failure (HF) and inhibition of RAS is a mainstay therapy for HF. Angiotensin-converting enzyme 2 (ACE2) and its product, angiotensin 1-7 (Ang-[1-7]), are important negative regulators of the RAS. OBJECTIVES: A comprehensive examination of angiotensin peptide levels and therapeutic effects of recombinant human ACE2 (rhACE2) on peptide metabolism was evaluated in human plasma and explanted heart tissue from patients with HF...
February 21, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28192373/cardiac-nuclear-receptors-architects-of-mitochondrial-structure-and-function
#8
Rick B Vega, Daniel P Kelly
The adult heart is uniquely designed and equipped to provide a continuous supply of energy in the form of ATP to support persistent contractile function. This high-capacity energy transduction system is the result of a remarkable surge in mitochondrial biogenesis and maturation during the fetal-to-adult transition in cardiac development. Substantial evidence indicates that nuclear receptor signaling is integral to dynamic changes in the cardiac mitochondrial phenotype in response to developmental cues, in response to diverse postnatal physiologic conditions, and in disease states such as heart failure...
February 13, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28191635/the-role-of-epicardial-adipose-tissue-in-cardiac-biology-classic-concepts-and-emerging-roles
#9
Alexios S Antonopoulos, Charalambos Antoniades
Classic concepts about the role of epicardial adipose tissue (EpAT) in heart physiology include its role in cardiac metabolism, the mechanical protection of coronaries, the innervation and possibly cryoprotection of the heart too. Nevertheless, recent evidence has revealed that epicardial adipose tissue regulates multiple aspects of cardiac biology including myocardial redox state, intracellular Ca(2+) cycling, the electrophysiological (EP) and contractile properties of cardiomyocytes, cardiac fibrosis as well as coronary atherosclerosis progression...
February 12, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28191526/decreased-regional-left-ventricular-myocardial-strain-in-type-1-diabetic-children-a-first-sign-of-diabetic-cardiomyopathy
#10
Amir Hodzic, Virginie Ribault, Pascale Maragnes, Paul Milliez, Eric Saloux, Fabien Labombarda
BACKGROUND AND OBJECTIVES: Type 1 diabetes is a major cardiovascular risk factor associated with an excess of mortality in young adults due to premature cardiovascular events, which includes heart failure. The relation between type 1 diabetes and cardiac structure and function in children was poorly documented. Our study investigates (1) whether type 1 diabetic children have echocardiographic signs of subclinical cardiac dysfunction assessed by tissue Doppler strain and (2) whether state of metabolic control and diabetes duration have any influence on the cardiac event...
June 1, 2016: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28190577/dilated-cardiomyopathy
#11
REVIEW
Robert G Weintraub, Christopher Semsarian, Peter Macdonald
Dilated cardiomyopathy is defined by the presence of left ventricular dilatation and contractile dysfunction. Genetic mutations involving genes that encode cytoskeletal, sarcomere, and nuclear envelope proteins, among others, account for up to 35% of cases. Acquired causes include myocarditis and exposure to alcohol, drugs and toxins, and metabolic and endocrine disturbances. The most common presenting symptoms relate to congestive heart failure, but can also include circulatory collapse, arrhythmias, and thromboembolic events...
February 9, 2017: Lancet
https://www.readbyqxmd.com/read/28185594/sleep-apnoea-in-australian-men-disease-burden-co-morbidities-and-correlates-from-the-australian-longitudinal-study-on-male-health
#12
Chamara Visanka Senaratna, Dallas R English, Dianne Currier, Jennifer L Perret, Adrian Lowe, Caroline Lodge, Melissa Russell, Sashane Sahabandu, Melanie C Matheson, Garun S Hamilton, Shyamali C Dharmage
BACKGROUND: Obstructive sleep apnoea is a common disorder with under-rated clinical impact, which is increasingly being recognised as having a major bearing on global disease burden. Men are especially vulnerable and become a priority group for preventative interventions. However, there is limited information on prevalence of the condition in Australia, its co-morbidities, and potential risk factors. METHODS: We used data from 13,423 adult men included in the baseline wave of Ten to Men, an Australian national study of the health of males, assembled using stratified cluster sampling with oversampling from rural and regional areas...
October 31, 2016: BMC Public Health
https://www.readbyqxmd.com/read/28181243/proteasome-dysfunction-in-cardiomyopathies
#13
Jennifer E Gilda, Aldrin V Gomes
The ubiquitin-proteasome system (UPS) plays a critical role in removing unwanted intracellular proteins and is involved in protein quality control, signalling, and cell death. Because the heart is subject to continuous metabolic and mechanical stress, the proteasome plays a particularly important role in the heart, and proteasome dysfunction has been suggested as a causative factor in cardiac dysfunction. Proteasome impairment has been detected in cardiomyopathies, heart failure, myocardial ischemia, and hypertrophy...
February 8, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28181117/cyp2d6-genetic-variation-and-beta-blocker-maintenance-dose-in-patients-with-heart-failure
#14
Jasmine A Luzum, Kevin M Sweet, Philip F Binkley, Tara J Schmidlen, Joseph P Jarvis, Michael F Christman, Wolfgang Sadee, Joseph P Kitzmiller
PURPOSE: This study examined whether a CYP2D6 polymorphism (CYP2D6*4) was related to beta-blocker maintenance dose in patients with heart failure. METHODS: Logistic regression modeling was utilized in a retrospective chart-review analysis of heart-failure patients (60% Male, 90% of European descent) to assess whether CYP2D6*4 (non-functional CYP2D6 allele present in 1 of 5 individuals of European descent) is associated with maintenance dose of carvedilol (n = 65) or metoprolol (n = 33)...
February 8, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28181010/mitochondrial-therapies-in-heart-failure
#15
Albrecht von Hardenberg, Christoph Maack
The current therapy for patients with stable systolic heart failure is largely limited to treatments that interfere with neurohormonal activation. Critical pathophysiological hallmarks of heart failure are an energetic deficit and oxidative stress, and both may be the result of mitochondrial dysfunction. This dysfunction is not (only) the result of defect within mitochondria per se, but is in particular traced to defects in intermediary metabolism and of the regulatory interplay between excitation-contraction coupling and mitochondrial energetics, where defects of cytosolic calcium and sodium handling in failing hearts may play important roles...
February 9, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28170359/targeting-%C3%AE-3-adrenergic-receptors-in-the-heart-selective-agonism-and-%C3%AE-blockade
#16
Alessandro Cannavo, Walter J Koch
Cardiac diseases, such as heart failure, remain leading causes of morbidity and mortality worldwide, with myocardial infarction as the most common etiology. HF is characterized by β-adrenergic receptor (βAR) dysregulation that is primarily due to the upregulation of G protein-coupled receptor kinases that leads to overdesensitization of β1 and β2ARs, and this clinically manifests as a loss of inotropic reserve. Interestingly, the "minor" βAR isoform, the β3AR, found in the heart, lacks G protein-coupled receptor kinases recognition sites, and is not subject to desensitization, and as a consequence of this, in human failing myocardium, the levels of this receptor remain unchanged or are even increased...
February 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28169556/blood-pressure-dynamics-during-exercise-rehabilitation-in-heart-failure-patients
#17
Idan Hecht, Michael Arad, Dov Freimark, Robert Klempfner
Background Patients suffering from heart failure (HF) may demonstrate an abnormal blood pressure response to exercise (ABPRE), which may revert to a normal one following medical treatment. It is assumed that this change correlates positively with prognosis and functional aspects. The aim of this study was to characterize patients with ABPRE and assess ABPRE normalization and the correlation with clinical and functional outcomes. Methods In the study, 651 patients with HF who underwent cardiac rehabilitation (CR) were examined...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28167558/pharmacokinetic-and-tissue-distribution-of-benznidazole-after-oral-administration-in-mice
#18
Luísa Perin, Rodrigo Moreira da Silva, Kátia da Silva Fonseca, Jamille Mirelle de Oliveira Cardoso, Fernando Augusto Siqueira Mathias, Levi Eduardo Soares Reis, Israel Molina, Rodrigo Correa-Oliveira, Paula Melo de Abreu Vieira, Cláudia Martins Carneiro
Specific chemotherapy using Benznidazole (BNZ) for Chagas disease during the chronic stage is controversial due to its limited efficacy and toxic effects. Although BNZ has been used to treat Chagas disease since the 1970s, few studies about the biodistribution of this drug exist. In this study, BNZ tissue biodistribution in a murine model and its pharmacokinetic profile in plasma were monitored. A bioanalytical high-performance liquid chromatography with an ultraviolet detector (HPLC-UV) method was developed and validated according to the European Medicines Agency for quantification of BNZ in organs and plasma samples prepared by liquid-liquid extraction using ethyl acetate...
February 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28164755/regulation-of-na-k-atpase-by-estradiol-and-igf-1-in-cardio-metabolic-diseases
#19
Milan Obradovic, Julijana Stanimirovic, Anastasija Panic, Nikola Bogdanovic, Emina Sudar-Milovanovic, Desanka Cenic-Milosevic, Esma R Isenovic
BACKGROUND: The sodium/potassium- adenosine- triphosphatase (Na+/K+-ATPase) is an important mediator in vasculature tone and contractility, and its abnormal regulation has been implicated in many diseases such as obesity, insulin resistance, diabetes, and hypertension. Decreased Na+/K+-ATPase abundance and its altered isoform expression induce cardiomyocytes death and cardiac dysfunction, possibly leading to the development of myocardial dilation and heart failure. Therefore, the regulation of Na+/K+-ATPase activity/expression could be important in treatment and possible prevention of cardio-metabolic diseases...
February 3, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28164545/plasma-zonulin-and-its-association-with-kidney-function-severity-of-heart-failure-and-metabolic-inflammation
#20
Thomas B Dschietzig, Felix Boschann, Jana Ruppert, Franz P Armbruster, Andreas Meinitzer, Dragic Bankovic, Veselin Mitrovic, Christoph Melzer
BACKGROUND: The tight junction regulator zonulin has attracted clinical attention as a biomarker of increased gastrointestinal permeability. Recent work also suggests zonulin to represent a general regulator of tissue barriers and a player in metabolic inflammation. Here, we investigated the associations of zonulin with chronic heart failure (CHF), kidney function, and metabolic inflammation. METHODS: Using multiple linear regression (Generalized Linear Model), this study determined the association of plasma zonulin with different laboratory and clinical parameters in 225 patients carrying automatic implantable cardioverters/defibrillators (AICD) for primary or secondary prevention...
December 1, 2016: Clinical Laboratory
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