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https://www.readbyqxmd.com/read/27914851/dynapenia-and-metabolic-health-in-obese-and-nonobese-adults-aged-70%C3%A2-years-and-older-the-life-study
#1
Mylène Aubertin-Leheudre, Stephen Anton, Daniel P Beavers, Todd M Manini, Roger Fielding, Ann Newman, Tim Church, Stephen B Kritchevsky, David Conroy, Mary M McDermott, Anda Botoseneanu, Mary E Hauser, Marco Pahor
OBJECTIVE: The purpose of this study was to examine the relationship between dynapenia and metabolic risk factors in obese and nonobese older adults. METHODS: A total of 1453 men and women (age ≥70 years) from the Lifestyle Interventions and Independence for Elders (LIFE) Study were categorized as (1) nondynapenic/nonobese (NDYN-NO), (2) dynapenic/nonobese (DYN-NO), (3) nondynapenic/obese (NDYN-O), or (4) dynapenic/obese (DYN-O), based on muscle strength (Foundation for the National Institute of Health criteria) and body mass index...
November 30, 2016: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/27914790/sarcoplasmic-reticulum-ca-2-mg-2-k-and-cl-concentrations-adjust-quickly-as-heart-rate-changes
#2
Claudio Berti, Vilmos Zsolnay, Thomas R Shannon, Michael Fill, Dirk Gillespie
During systole, Ca(2+) is released from the sarcoplasmic reticulum (SR) through ryanodine receptors (RyRs) while, simultaneously, other ions (specifically K(+), Mg(2+), and Cl(-)) provide counter-ion flux. These ions move back into the SR during diastole through the SERCA pump and SR K(+) and Cl(-) channels. In homeostasis, all ion concentrations in different cellular regions (e.g., junctional and non-junctional SR, dyadic cleft, and cytosol) are the same at the beginning and end of the cardiac cycle. Here, we used an equivalent circuit compartment model of the SR and the surrounding cytoplasm to understand the heart rate dependence of SR ion homeostasis...
November 30, 2016: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/27914656/chronic-oral-study-of-myosin-activation-to-increase-contractility-in-heart-failure-cosmic-hf-a-phase-2-pharmacokinetic-randomised-placebo-controlled-trial
#3
John R Teerlink, G Michael Felker, John J V McMurray, Scott D Solomon, Kirkwood F Adams, John G F Cleland, Justin A Ezekowitz, Assen Goudev, Peter Macdonald, Marco Metra, Veselin Mitrovic, Piotr Ponikowski, Pranas Serpytis, Jindrich Spinar, János Tomcsányi, Hans J Vandekerckhove, Adriaan A Voors, Maria Laura Monsalvo, James Johnston, Fady I Malik, Narimon Honarpour
BACKGROUND: Impaired contractility is a feature of heart failure with reduced ejection fraction. We assessed the pharmacokinetics and effects on cardiac function and structure of the cardiac myosin activator, omecamtiv mecarbil. METHODS: In this randomised, double-blind study, done at 87 sites in 13 countries, we recruited patients with stable, symptomatic chronic heart failure and left ventricular ejection fraction 40% or lower. Patients were randomly assigned equally, via an interactive web response system, to receive 25 mg oral omecamtiv mecarbil twice daily (fixed-dose group), 25 mg twice daily titrated to 50 mg twice daily guided by pharmacokinetics (pharmacokinetic-titration group), or placebo for 20 weeks...
November 30, 2016: Lancet
https://www.readbyqxmd.com/read/27914527/prophylactic-effects-of-alkaloids-from-ba-lotus-seeds-on-l-nna-induced-hypertension-in-mice
#4
Peng Sun, Kai Zhu, Cun Wang, Wei-Wei Liu, De-Guang Peng, Xin Zhao
Alkaloids from Ba lotus seeds (ABLS) are a kind of important functional compounds in lotus seeds. The present study was designed to determine its hypertension prophylactic effects in the L-NNA-induced mouse hypertension model. The mice were treated with ABLS, the serum and tissues levels of NO, MDA, ET-1, VEGF, and CGRP were determined using the experimental kits, the mRNA levels of various genes in the heart muscle and blood vessel tissues were further determined by RT-PCR assay. ABLS could reduce the systolic blood pressure (SBP), mean blood pressure (MBP), and diastolic blood pressure (DBP), compared to that of the model control group...
November 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/27914003/n-terminal-pro-b-type-natriuretic-peptide-levels-are-linked-with-modified-child-pugh-classification-in-patients-with-nonalcoholic-cirrhosis-nt-probnp-and-liver-cirrhosis
#5
Abdulbaki Kumbasar, Mehtap Navdar, Esra Ataoglu, Isil Uzunhasan, Kadir Ergen, Sule Poturoglu, Filiz Basinoglu, Fatih Yilmaz, Mustafa Yenigun, Fuat Sar, Ozgur Tanriverdi
Excess N-terminal pro-brain natriuretic peptide secretion has been linked to cirrhosis in previously studies. The relationship of plasma N-terminal pro-brain natriuretic peptide levels and cardiac dysfunction determined by echocardiography were investigated in patients with nonalcoholic cirrhosis and a control group of chronic hepatitis. This study was designed as a cross-sectional study. Thirty-two men and thirty-three women who gave informed consent who were followed-up for chronic liver failure were enrolled...
December 2, 2016: Cell Biochemistry and Biophysics
https://www.readbyqxmd.com/read/27913983/mobile-health-technology-can-objectively-capture-physical-activity-pa-targets-among-african-american-women-within-resource-limited-communities-the-washington-d-c-cardiovascular-health-and-needs-assessment
#6
S Thomas, L Yingling, J Adu-Brimpong, V Mitchell, C R Ayers, G R Wallen, M Peters-Lawrence, A T Brooks, D M Sampson, K L Wiley, J Saygbe, J Henry, A Johnson, A Graham, L Graham, T M Powell-Wiley
BACKGROUND: Little is understood about using mobile health (mHealth) technology to improve cardiovascular (CV) health among African-American women in resource-limited communities. METHODS: We conducted the Washington, D.C. CV Health and Needs Assessment in predominantly African-American churches in city wards 5, 7, and 8 with the lowest socioeconomic status based on community-based participatory research (CBPR) principles. The assessment measured CV health factors: body mass index (BMI), fasting blood glucose and cholesterol, blood pressure, fruit/vegetable (F/V) intake, physical activity (PA), and smoking...
December 2, 2016: Journal of Racial and Ethnic Health Disparities
https://www.readbyqxmd.com/read/27913606/acute-administration-of-acyl-but-not-desacyl-ghrelin-decreases-blood-pressure-in-healthy-humans
#7
Cecilia J Zhang, Martin Bidlingmaier, Mekibib Altaye, Laura C Page, David D'Alessio, Matthias H Tschöp, Jenny Tong
OBJECTIVE: To compare the effects of acyl ghrelin (AG) and desacyl ghrelin (DAG) on blood pressure (BP), heart rate (HR) and other autonomic parameters in healthy humans and to elucidate the hormonal mechanisms through which AG could exert its cardiovascular effects. DESIGN: Seventeen healthy participants underwent frequent monitoring of systolic (sBP) and diastolic blood pressure (dBP), HR, respiratory rate (RR) and body surface temperature (Temp) during continuous infusion of AG, DAG, combined AG + DAG or saline control before and during an IV glucose tolerance test on 4 separate days...
February 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27913401/the-barrel-of-the-smoking-gun-finding-diastolic-pathways-during-sinus-rhythm
#8
EDITORIAL
Nicholas S Peters, Edward J Ciaccio
No abstract text is available yet for this article.
December 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27913338/intracardiac-vortex-dynamics-by-high-frame-rate-doppler-vortography-i-in-vivo-i-comparison-with-vector-flow-mapping-and-4-d-flow-mri
#9
Julia Faurie, Mathilde Baudet, Kondo Claude Assi, Dominique Auger, Guillaume Gilbert, Francois Tournoux, Damien Garcia
Recent studies have suggested that intracardiac vortex flow imaging could be of clinical interest to early diagnose the diastolic heart function. Doppler vortography has been intro-duced as a simple color Doppler method to detect and quantify intraventricular vortices. This method is able to locate a vortex core based on the recognition of an antisymmetric pattern in the Doppler velocity field. Because the heart is a fast-moving organ, high frame rates are needed to decipher the whole blood vortex dynamics during diastole...
November 29, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27913284/cardiac-proteasome-functional-insufficiency-plays-a-pathogenic-role-in-diabetic-cardiomyopathy
#10
Jie Li, Wenxia Ma, Guihua Yue, Yaoliang Tang, Il-Man Kim, Neal L Weintraub, Xuejun Wang, Huabo Su
BACKGROUND: Diabetic cardiomyopathy is a major risk factor in diabetic patients but its pathogenesis remains poorly understood. The ubiquitin-proteasome system (UPS) facilitates protein quality control by degrading unnecessary and damaged proteins in eukaryotic cells, and dysfunction of UPS is implicated in various cardiac diseases. However, the overall functional status of the UPS and its pathophysiological role in diabetic cardiomyopathy have not been determined. METHODS AND RESULTS: Type I diabetes was induced in wild-type and transgenic mice expressing a UPS functional reporter (GFPdgn) by injections of streptozotocin (STZ)...
November 29, 2016: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/27909891/canola-oil-rich-in-oleic-acid-improves-diastolic-heart-function-in-diet-induced-obese-rats
#11
Sijo Joseph Thandapilly, Pema Raj, Xavier Lieben Louis, Danielle Perera, Prasanga Yamanagedara, Peter Zahradka, Carla G Taylor, Thomas Netticadan
Obesity is a leading cause of cardiovascular disease. It directly affects heart structure and function and contributes to heart failure. Diet is a major factor involved in the development of obesity along with genetic factors. We examined the effects of monounsaturated and polyunsaturated fatty acid-rich oils on cardiac structure and function in the diet-induced rodent model of obesity (DIO). Obese prone (OP) rats were fed a high-fat diet (HF; 55% of kcal) for 12 weeks; Sprague-Dawley rats fed commercial chow served as control...
December 1, 2016: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/27909513/assessment-of-sinoatrial-node-function-in-patients-with-persistent-and-long-standing-persistent-forms-of-atrial-fibrillation-after-maze-iii-procedure-combined-with-mitral-valve-operation
#12
Kulikov Aleksei A, Bokeria Leo A
RESEARCH OBJECTIVE: Assessment of sinoatrial node function after Maze III procedure combined with a mitral valve operation. METHODS: 100 patients were included in the research with persistent and long-standing persistent forms of atrial fibrillation (AF) and need of operative treatment concerning valve disease. The following preoperative preparation methods were executed to all patients: Electrocardiogram in 12 standard assignments;Two-dimensional echocardiographic with assessment of systolic and diastolic functions of the left ventricle, size of the left atrium and grade of valve disease;Transesophageal echocardiography for exclusion of blood clots in the left atrium and left atrial appendage;Coronary angiography for exclusion of coronary heart disease;Computer tomography for examination of cardiac chambers and anatomic characteristics of pulmonary veins...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909490/effects-of-atrial-fibrillation-cardioversion-after-percutaneous-mitral-balloon-valvuloplasty-on-echocardiographic-left-and-right-atrial-functions
#13
Ayman Morttada Md, Aly Ramzy Md, Said Khaled Md, Amal Ayoub Md, Sameh Samir Md, Hossam Zaki Md
Amongst patients with mitral stenosis (MS), the most common complication is AF.Our study aimed at evaluating the effect of AF cardioversion after Percutaneous Mitral Balloon Valvuloplasty (PMBV) on echocardiographic atrial functions. The study included 34 patients with MS and AF, presenting to Ain-shams University hospitals, who underwent successful PMBV then randomized into 2 different groups according to AF management strategy. Group-I patients (n=16) received DC cardioversion after amiodarone infusion (within 24 hours post-PMBV) in addition to anticoagulation...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909014/sodium-4-phenylbutyrate-attenuates-myocardial-reperfusion-injury-by-reducing-the-unfolded-protein-response
#14
Osamu Takatori, Soichiro Usui, Masaki Okajima, Shuichi Kaneko, Hiroshi Ootsuji, Shin-Ichiro Takashima, Daisuke Kobayashi, Hisayoshi Murai, Hiroshi Furusho, Masayuki Takamura
BACKGROUND: The unfolded protein response (UPR) plays a pivotal role in ischemia-reperfusion (I/R) injury in various organs such as heart, brain, and liver. Sodium 4-phenylbutyrate (PBA) reportedly acts as a chemical chaperone that reduces UPR. In the present study, we evaluated the effect of PBA on reducing the UPR and protecting against myocardial I/R injury in mice. METHODS: Male C57BL/6 mice were subjected to 30-minute myocardial I/R, and were treated with phosphate-buffered saline (as a vehicle) or PBA...
December 1, 2016: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27908795/orthostatic-cardiovascular-profile-of-subjective-well-being
#15
Dmitry M Davydov, Róża Czabak-Garbacz
Previous clinical and elderly population studies have found that affective well-being can be assessed by clino-orthostatic cardiovascular reactivity. This study explored this relationship in a young healthy sample, and with respect to cognitive appraisals of well-being. Four successive readings of blood pressure (BP) and heart rate (HR) after lying down (clinostatic probe) followed by four successive readings after standing up (orthostatic probe) were obtained from 52 healthy students along with questionnaire-reported well-being...
November 28, 2016: Biological Psychology
https://www.readbyqxmd.com/read/27908661/uniform-low-level-dystrophin-expression-in-the-heart-partially-preserved-cardiac-function-in-an-aged-mouse-model-of-duchenne-cardiomyopathy
#16
Nalinda B Wasala, Yongping Yue, Jenna Vance, Dongsheng Duan
Dystrophin deficiency results in Duchenne cardiomyopathy, a primary cause of death in Duchenne muscular dystrophy (DMD). Gene therapy has shown great promise in ameliorating the cardiac phenotype in mouse models of DMD. However, it is not completely clear how much dystrophin is required to treat dystrophic heart disease. We and others have shown that mosaic dystrophin expression at the wild-type level, depending on the percentage of dystrophin positive cardiomyocytes, can either delay the onset of or fully prevent cardiomyopathy in dystrophin-null mdx mice...
November 28, 2016: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/27908646/left-ventricular-function-in-healthy-term-neonates-during-the-transitional-period
#17
Amish Jain, Afif F El-Khuffash, Bart C W Kuipers, Adel Mohamed, Kim A Connelly, Patrick J McNamara, Robert P Jankov, Luc Mertens
OBJECTIVES: To evaluate whether incorporating conventional, tissue Doppler imaging and speckle tracking echocardiography are reliable and can characterize changes in left ventricular (LV) function properly in healthy neonates in the early transitional newborn period. STUDY DESIGN: A prospective observational study was conducted in 50 healthy term neonates with a mean ± SD gestational age and birth weight of 39.3 ± 1.2 weeks and 3.5 ± 0.44 kg, respectively...
November 28, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27908548/dietary-sodium-and-potassium-intakes-data-from-urban-and-rural-areas
#18
Carmelle Mizéhoun-Adissoda, Dismand Houinato, Corine Houehanou, Thierry Chianea, François Dalmay, André Bigot, Victor Aboyans, Pierre-Marie Preux, Pascal Bovet, Jean-Claude Desport
OBJECTIVES: Hypertension is highly prevalent in West African populations, but little data is available on salt and potassium intake in these populations. We assumed in this study that sodium and potassium intake might be high and low, respectively, in the Beninese population in view of the emerging nutritional transition. The aim of this study was to estimate dietary sodium and potassium intakes based on 24-h urine collections. METHODS: We selected 420 individuals (ages 25-64 y), representative of the population, from urban and rural areas in Benin...
January 2017: Nutrition
https://www.readbyqxmd.com/read/27908343/a%C3%AE-amyloid-pathology-affects-the-hearts-of-patients%C3%A2-with%C3%A2-alzheimer-s-disease-mind%C3%A2-the-heart
#19
Luca Troncone, Marco Luciani, Matthew Coggins, Elissa H Wilker, Cheng-Ying Ho, Kari Elise Codispoti, Matthew P Frosch, Rakez Kayed, Federica Del Monte
BACKGROUND: Individually, heart failure (HF) and Alzheimer's disease (AD) are severe threats to population health, and their potential coexistence is an alarming prospect. In addition to sharing analogous epidemiological and genetic profiles, biochemical characteristics, and common triggers, the authors recently recognized common molecular and pathological features between the 2 conditions. Whereas cognitive impairment has been linked to HF through perfusion defects, angiopathy, and inflammation, whether patients with AD present with myocardial dysfunction, and if the 2 conditions bear a common pathogenesis as neglected siblings are unknown...
December 6, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27908266/is-metformin-a-perfect-drug-updates-in-pharmacokinetics-and-pharmacodynamics
#20
Magdalena Markowicz-Piasecka, Kristiina Maria Huttunen, Łukasz Mateusiak, Elżbieta Mikiciuk-Olasik, Joanna Sikora
Metformin, a synthetic biguanide, is currently one of the most frequently recommended medications for type 2 diabetes treatment around the world. In this review, we present the latest discoveries in the pharmacokinetics of metformin, especially the role of transporters (e.g. Organic Cation Transporters OCTs, Multidrug and Toxin Extrusion transporters MATE) in oral absorption, distribution, elimination and biochemical effects of metformin in humans. We also review the associations between genetic variations of metformin transporters, their pharmacokinetics and drug efficacy or drug responses...
December 1, 2016: Current Pharmaceutical Design
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