Cardiovascular disease (CVD) Research

19:54 EST 13th December 2018 | BioPortfolio

Muscle metaboreflex activation via postexercise ischemia as a tool for teaching cardiovascular physiology for undergraduate students.

The cardiovascular responses to exercise are mediated by several interactive neural mechanisms, including central command, arterial baroreflex, and skeletal muscle mechano- and metaboreflex. In humans, muscle metaboreflex activation can be isolated via postexercise ischemia (PEI), which increases sympathetic nerve activity and partially maintains the exercise-induced increase in arterial blood pre...

Cardiac Vagus and Exercise.

Lower resting heart rate and high autonomic vagal activity are strongly associated with superior exercise capacity, maintenance of which is essential for general well-being and healthy aging. Recent evidence obtained in experimental studies using the latest advances in molecular neuroscience, combined with human exercise physiology, physiological modeling, and genomic data suggest that the strengt...

Muscle specific stress fibers give rise to sarcomeres in cardiomyocytes.

The sarcomere is the contractile unit within cardiomyocytes driving heart muscle contraction. We sought to test the mechanisms regulating actin and myosin filament assembly during sarcomere formation. Therefore, we developed an assay using human cardiomyocytes to monitor sarcomere assembly. We report a population of muscle stress fibers, similar to actin arcs in non-muscle cells, which are essenti...

Influence of Different Methods to Determine Maximum Heart Rate on Training Load Outcomes in Basketball Players.

Berkelmans, DM, Dalbo, VJ, Fox, JL, Stanton, R, Kean, CO, Giamarelos, KE, Teramoto, M, and Scanlan, AT. Influence of different methods to determine maximum heart rate on training load outcomes in basketball players. J Strength Cond Res 32(11): 3177-3185, 2018-The summated-heart-rate-zones (SHRZ) approach uses heart rate (HR) responses relative to maximum HR (HRmax) to calculate the internal traini...

Factors Affecting the Response of Pomegranate Fruit to Alternaria alternata, the Causal Agent of Heart Rot.

Heart rot, caused by Alternaria alternata, is a major pomegranate disease that impacts production worldwide; most fruits in orchards are colonized by A. alternata but, nevertheless, symptoms are apparent on only a small proportion of the colonized fruits. During the years of our previous research it was noticed that within individual orchards, the incidence of pomegranate fruits exhibiting heart r...

A Minimally Invasive Approach for Placing Sew-On Epicardial Leads in the Child.

Traditionally, pacing leads are placed transvenously, although smaller pediatric patients who require permanent pacemakers may benefit from delaying tranvenous lead placement until they are larger. Alternative, minimally invasive atrioventricular pacing options have not previously existed for this patient population, leaving many of these children with large sternotomies or thoracotomies. Using th...

Anticoagulation Management and Heparin Resistance During Cardiopulmonary Bypass: A Survey of Society of Cardiovascular Anesthesiologists Members.

We surveyed Society of Cardiovascular Anesthesiologists members regarding anticoagulation practices for cardiopulmonary bypass and attitudes on heparin resistance. Of 550 respondents (18.5% response rate), 74.9% (95% CI, 71.3%-78.5%) used empiric weight-based dosing of heparin, and 70.7% (95% CI, 66.9%-74.5%) targeted an activated clotting time of either 400 or 480 seconds to initiate cardiopulmon...

Combination of ST2 and B-type natriuretic peptide in diabetic patients with acute heart failure: relation with ventricular stiffness and outcome.

Diabetes is a common disease in heart failure and its prevalence ranges from 10 to 30%. ST-2 is a novel biomarker of myocardial fibrosis and remodelling in heart failure and may be involved in the inflammatory process of diabetes mellitus. In this study, we sought: to evaluate levels of ST-2 and B-type natriuretic peptide (BNP) in groups with acute heart failure with and without diabetes; to analy...

Identifying responders to oral iron supplementation in heart failure with a reduced ejection fraction: a post-hoc analysis of the IRONOUT-HF trial.

Hemodynamic effects of the dipeptidyl peptidase-4 inhibitor linagliptin with renin-angiotensin system inhibitors in type 2 diabetic patients with albuminuria.

Concomitant treatment with angiotensin-converting enzyme (ACE) inhibitors and dipeptidyl peptidase-4 (DPP-4) inhibitors is increasingly common. Pharmacological studies have suggested a potential adverse drug interaction between ACE inhibitors and DPP-4 inhibitors resulting in unfavorable hemodynamic changes; very few studies have examined such an interaction between angiotensin II receptor blocker...

The Titration and Tolerability of Sacubitril/Valsartan for Patients with Heart Failure in Clinical Practice.

Little is known about the dosing and tolerability of sacubitril/valsartan (LCZ696; Entresto™, Quebec, Canada) in a non-clinical trial population. This study was conducted to evaluate the use and tolerability of sacubitril/valsartan in patients followed at a multidisciplinary heart failure clinic. We performed a retrospective chart review of 126 patients with heart failure, initiated on sacubitri...

Comparison of Candesartan and Angiotensin-(1-7) Combination and Mito Tempo Treatment for Normalizing Blood Pressure and Sympathovagal Balance in (Mren2)27 Rats.

Hypertensive transgenic (mRen2)27 rats exhibit impaired baroreflex sensitivity (BRS) for control of heart rate (HR). Intracerebroventricular (ICV) infusion of Ang-(1-7) improves indices of vagal BRS independent of lowering mean arterial pressure (MAP), while AT1 receptor blockade normalizes MAP and indices of sympathetic tone without correcting the vagal BRS. Scavenging cellular reactive oxygen sp...

Sacubitril/valsartan in daily clinical practice: data from a prospective registry.

Sacubitril/valsartan (SV) is a new therapy in heart failure with reduced ejection fraction. Our aim was to determine the efficacy and safety of this drug daily clinical practice.We performed a multicenter registry in 10 hospitals. All patients who started SV from October 2016 to March 2017 on an outpatient basis were included.A total of 427 patients started treatment with SV. Mean follow-up was 7....

Atorvastatin improves doxorubicin-induced cardiac dysfunction by modulating Hsp70, Akt and MAPK signalling pathways.

Atorvastatin is a lipid-regulating drug that is commonly used in clinical practice and can stabilize plaques. Increasing evidence shows that statins have anti-heart failure effects, but their specific mechanism is not clear. The purpose of this study was to investigate the cardioprotective effects of atorvastatin on heart failure in rats and its mechanism. Continuous intraperitoneal injection of 2...

Predictive Value of Head-Neck CTA Combined with ABCD2 Scale Score for Patients with Cerebral Infarction of Vertebrobasilar Transient Ischemic Attack (TIA).

BACKGROUND The present study was designed to evaluate the predictive value of head-neck computed tomography angiography (CTA) combined with ABCD2 score scale for patients with cerebral infarction of vertebrobasilar transient ischemic attack (TIA). MATERIAL AND METHODS A total of 92 patients with TIA who were admitted to our hospital from January 2014 to June 2015 were enrolled in this study. ABCD2...

Cardiac Index by Transthoracic Echocardiography (CITE) study.

Left ventricular ejection fraction (LVEF) is the most frequently used parameter in the assessment of heart failure (HF). Cardiac index (CI) is considered a potential alternative to LVEF despite limited evidence. We aimed to assess and compare the predictive accuracy of LVEF and echocardiographically-assessed CI in HF patients.

Influence of polypharmacy on heart rate variability in older adults at the Hiroshima Atomic Bomb Survivors Recuperation Research Center, Japan.

Many studies have identified the risk of polypharmacy, but physiological evidence and methods of evaluation in these studies were poor. The relationship between polypharmacy and heart rate variability in older adults remains unclear. We investigated the relationship between polypharmacy in older adults, including atomic bomb survivors, and heart rate variability.

Health Literacy and Mortality in Patients With Heart Failure: A Systematic Review and Meta-Analysis.

Heart failure (HF) remains the most common diagnosis of hospital admission among U.S. adults. Although diagnosis and treatment have improved, mortality rates have not changed, and mortality risk remains high after hospitalization. The current researchers examined how limited health literacy is associated with mortality risk in adults with recent hospitalization due to decompensated HF. Researchers...

Perspectives on the Use of Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes in Biomedical Research.

Cardiovascular disease is still a major cause of ill-health and mortality, heart failure and arrhythmia being among the causes of sudden cardiac death. There are few drugs available for treatment or prevention and it remains difficult to predict who will develop these conditions, even when disease-causing mutations or associated gene variants are identified in individuals or families. This is in ...

Simultaneous operative repair of pectus excavatum and concurrent congenital heart defects.

The aim of this study is to describe an effective surgical strategy for the treatment of children with pectus excavatum (PE) and concurrent congenital heart defect (CHD).

Effect of Salvia Miltiorrhiza Injection in Patients With Autologous Fat Grafting to the Breast: A Preliminary Comparative Study.

Salvia miltiorrhiza (SM) is a herb used in Chinese medicine formulations for promoting blood circulation and minimizing vascular stasis. It has been successfully utilized in treating cardiovascular diseases, such as atherosclerosis, thromboembolism, and angina.

Haemodynamic stress-induced breaches of the arterial intima trigger inflammation and drive atherogenesis.

Inflammatory mediators, including blood cells and their products, contribute critically to atherogenesis, but the igniting triggers of inflammation remain elusive. Atherosclerosis develops at sites of flow perturbation, where the enhanced haemodynamic stress could initiate the atherogenic inflammatory process due to the occurrence of mechanic injury. We investigated the role of haemodynamic stress...

Prognostic value of left atrial strain in predicting cardiovascular morbidity and mortality in the general population.

Left atrial (LA) enlargement predicts cardiovascular risk. The prognostic value of left atrial peak reservoir strain (LA RS) by two-dimensional speckle tracking in the general population is currently unknown. This study sought to determine the prognostic value of LA RS in the general population.

University athletes and changes in cardiac geometry: insight from the 2015 Gwangju Summer Universiade.

There is a paucity of data regarding the changes of cardiac geometry in highly trained international and multiracial university athletes. We aimed to investigate the incidence of structural cardiac abnormalities and changes of cardiac geometry in highly trained university athletes.

Detecting moderate or complex congenital heart defects in adults from an electronic health records system.

The prevalence of moderate or complex (moderate-complex) congenital heart defects (CHDs) among adults is increasing due to improved survival, but many patients experience lapses in specialty care or their CHDs are undocumented in the medical system. There is, to date, no efficient approach to identify this population.

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