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Cardiac heart failure

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https://www.readbyqxmd.com/read/28437711/cardiomyocyte-ca-2-homeostasis-as-a-therapeutic-target-in-heart-failure-with-reduced-and-preserved-ejection-fraction
#1
REVIEW
Deborah Peana, Timothy L Domeier
Heart failure is a highly prevalent syndrome of multiple etiologies and associated comorbidities, and aberrant intracellular Ca(2+) homeostasis is a hallmark finding in heart failure patients. The cyclical changes in Ca(2+) concentration within cardiomyocytes control cycles of cardiac contraction and relaxation, and dysregulation of Ca(2+) handling processes leads to systolic dysfunction, diastolic dysfunction, and adverse remodeling. For this reason, greater understanding of Ca(2+) handling mechanisms in heart failure is critical for selection of appropriate treatment strategies...
April 21, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28437212/the-impact-of-communication-skills-training-on-cardiology-fellows-and-attending-physicians-perceived-comfort-with-difficult-conversations
#2
Kathryn Berlacher, Robert M Arnold, Eva Reitschuler-Cross, Jeffrey Teuteberg, Winifred Teuteberg
BACKGROUND: Cardiologists need to decide which treatments are appropriate for seriously ill patients and whether they align with patient goals. Reconciling medical options with patients' wishes requires skilled communication. Although there is evidence that communication is teachable, few cardiologists receive formal training. OBJECTIVE: To demonstrate that providing communication skills training to cardiologists is feasible and improves their perceived preparedness (PP) for leading difficult conversations...
March 1, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28436722/exercise-training-improves-characteristics-of-exercise-oscillatory-ventilation-in-chronic-heart-failure
#3
Niki Panagopoulou, Eleftherios Karatzanos, Stavros Dimopoulos, Athanasios Tasoulis, Ioannis Tachliabouris, Styliani Vakrou, Antonios Sideris, Christina Gratziou, Serafim Nanas
Background Exercise oscillatory ventilation in chronic heart failure has been suggested as a factor related to adverse cardiac events, aggravated prognosis and higher mortality. Exercise training is well known to affect exercise capacity and mechanisms of pathophysiology beneficially in chronic heart failure. Little is known, however, about the exercise training effects on characteristics of exercise oscillatory ventilation in chronic heart failure patients. Design and methods Twenty (out of 38) stable chronic heart failure patients exhibited exercise oscillatory ventilation (age 54 ± 11 years, peak oxygen uptake 15...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28435766/a-heart-too-stiff-to-beat-a-case-of-familial-transthyretin-amyloidosis-cardiomyopathy
#4
Yan Zhou, Sameen Khalid, Aamer Abbass, Laura Hughes, Marcos Hazday
Heart failure is a common clinical syndrome caused by a variety of cardiac diseases. We report a rare case of familial transthyretin amyloidosis cardiomyopathy to heighten the awareness of this rare but lethal cause of heart failure, as therapeutic interventions such as liver or heart transplant could be curative in selected patients.
March 20, 2017: Curēus
https://www.readbyqxmd.com/read/28435089/cobalt-chloride-induces-rhoa-rock-activation-and-remodeling-effect-in-h9c2-cardiomyoblasts-involvement-of-pi3k-akt-and-mapk-pathways
#5
Cheng-I Cheng, Yueh-Hong Lee, Po-Han Chen, Yu-Chun Lin, Ming-Huei Chou, Ying-Hsien Kao
Chronic heart failure is a serious complication of myocardial infarction, one of the major causes of death worldwide that often leads to adverse cardiac hypertrophy and poor prognosis. Hypoxia-induced cardiac tissue remodeling is considered an important underlying etiology. This study aimed to delineate the signaling profile of RhoA/ROCK, PI3K/Akt, and MAPK and their involvement in regulation of remodeling events in cultured H9c2 cardiomyoblast cells. In addition to its growth-suppressive effect, the hypoxia-mimetic chemical, cobalt chloride (CoCl2) significantly induced RhoA kinase activation as revealed by increased MBS phosphorylation and ROCK1/2 expression in H9c2 cells...
April 20, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28435069/age-related-increase-in-wnt-inhibitor-causes-a-senescence-like-phenotype-in-human-cardiac-stem-cells
#6
Tamami Nakamura, Tohru Hosoyamaa, Junichi Murakami, Makoto Samura, Koji Ueno, Hiroshi Kurazumi, Ryo Suzuki, Akihito Mikamo, Kimikazu Hamano
Aging of cardiac stem/progenitor cells (CSCs) impairs heart regeneration and leads to unsatisfactory outcomes of cell-based therapies. As the precise mechanisms underlying CSC aging remain unclear, the use of therapeutic strategies for elderly patients with heart failure is severely delayed. In this study, we used human cardiosphere-derived cells (CDCs), a subtype of CSC found in the postnatal heart, to identify secreted factor(s) associated with CSC aging. Human CDCs were isolated from heart failure patients of various ages (2-83 years old)...
April 20, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28435004/improvements-in-left-ventricular-diastolic-mechanics-after-parachute-device-implantation-in-patients-with-ischemia-heart-failure-a-cardiac-ct-study
#7
Chun-Ho Yun, Jing-Yi Sun, Barry Templin, Shih-Hsuan Lin, Kuan-Ming Chen, Tung-Hsin Wu, Chung-Lieh Hung, Chun-Chieh Liu, Hsi-Hsien Hsu, Mohamad Amer Alaiti, Anas Fares, Anthony DeCicco, Hiram G Bezerra
BACKGROUND: Percutaneous ventricular restoration therapy using left ventricle (LV) partitioning Parachute device has emerged as a clinical treatment option for LV apical aneurysm post extensive anterior myocardial infarction (AMI). We assessed changes of diastolic mechanics and accompanied functional improvements following LV parachute device implantation by cardiac computed tomography (CCT). METHODS AND RESULTS: CCT data from 28 patients in the pre- and post-implantation of LV parachute device implantation...
April 20, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28434533/performance-of-fixed-heart-rate-increment-targets-of-20-vs-30-beats-per-minute-for-exercise-rehabilitation-prescription-in-outpatients-with-heart-failure
#8
Jennifer L Reed, Angelica Z Blais, Marja-Leena Keast, Andrew L Pipe, Robert D Reid
BACKGROUND: Patients with heart failure (HF) should exercise at 40%-60% heart rate reserve (HRR) during the first 3 weeks of an outpatient cardiac rehabilitation (CR) program and at 50%-80% HRR thereafter. Arbitrary methods to prescribe exercise intensity such as resting HR (RHR) plus 20 or 30 beats per minute (bpm) (RHR + 20 or RHR + 30) are recommended for inpatients after a myocardial infarction or those recovering from heart surgery. This approach has been repurposed by outpatient CR programs to prescribe exercise intensity for patients with HF, yet its efficacy has not been evaluated...
February 2, 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28434295/standard-heart-failure-medication-in-cardiac-transthyretin-amyloidosis-useful-or-harmful
#9
Fabian Aus dem Siepen, Selina Hein, Ralf Bauer, Hugo A Katus, Arnt V Kristen
No abstract text is available yet for this article.
March 2017: Amyloid: the International Journal of Experimental and Clinical Investigation
https://www.readbyqxmd.com/read/28434143/the-mtor-signaling-pathway-in-myocardial-dysfunction-in-type-2-diabetes-mellitus
#10
REVIEW
Tomohiro Suhara, Yuichi Baba, Briana K Shimada, Jason K Higa, Takashi Matsui
PURPOSE OF REVIEW: T2DM (type 2 diabetes mellitus) is a risk factor for heart failure. The mTOR (mechanistic target of rapamycin) is a key mediator of the insulin signaling pathway. We will discuss the role of mTOR in myocardial dysfunction in T2DM. RECENT FINDINGS: In T2DM, chronically activated mTOR induces multiple pathological events, including a negative feedback loop that suppresses IRS (insulin receptor substrate)-1. While short-term treatment with rapamycin, an mTOR inhibitor, is a promising strategy for cardiac diseases such as acute myocardial infarction and cardiac hypertrophy in T2DM, there are many concerns about chronic usage of rapamycin...
June 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28434088/addressing-the-heterogeneity-of-heart-failure-in-future-randomized-trials
#11
REVIEW
Annamaria Iorio, Andrea Pozzi, Michele Senni
PURPOSE OF THE REVIEW: The aim of review is to describe the essential role of study designs beyond RCTs in contemporary contest of HF patients giving perspectives on its evolving. The article concludes with concern about the support of observational studies for future randomized clinical trials. RECENT FINDINGS: With the aging population and spectacular advance in cardiovascular therapy, the clinical syndrome comprising heart failure (HF) is increasingly in complexity of heterogeneity...
April 23, 2017: Current Heart Failure Reports
https://www.readbyqxmd.com/read/28433665/advancing-the-science-of-myocardial-recovery-with-mechanical-circulatory-support-a-working-group-of-the-national-heart-lung-and-blood-institute
#12
Stavros G Drakos, Francis D Pagani, Martha S Lundberg, J Timothy 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 Blood Institute (NHLBI) convened a Working Group of experts on June 2-3, 2016 in Bethesda Maryland to develop recommendations for the NHLBI aimed at advancing the science of cardiac recovery in the setting of mechanical circulatory support (MCS). MSC devices effectively reduce volume and pressure overload that drives the cycle of progressive myocardial dysfunction, thereby triggering structural and functional reverse remodeling...
April 19, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28432943/exploration-of-flexible-phenylpropylurea-scaffold-as-novel-cardiac-myosin-activators-for-the-treatment-of-systolic-heart-failure
#13
Manoj Manickam, Hitesh B Jalani, Thanigaimalai Pillaiyar, Niti Sharma, Pulla Reddy Boggu, Eeda Venkateswararao, You-Jung Lee, Eun-Seok Jeon, Sang-Hun Jung
A series of flexible urea derivatives have been synthesized and demonstrated as selective cardiac myosin ATPase activator. Among them 1-phenethyl-3-(3-phenylpropyl)urea (1, cardiac myosin ATPase activation at 10 μM = 51.1%; FS = 18.90; EF = 12.15) and 1-benzyl-3-(3-phenylpropyl)urea (9, cardiac myosin ATPase activation = 53.3%; FS = 30.04; EF = 18.27) showed significant activity in vitro and in vivo. The change of phenyl ring with tetrahydropyran-4-yl moiety viz., 1-(3-phenylpropyl)-3-((tetrahydro-2H-pyran-4-yl)methyl)urea (14, cardiac myosin ATPase activation = 81...
April 7, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28432605/cardiac-magnetic-resonance-imaging-in-heart-failure-where-the-alphabet-begins
#14
REVIEW
Ahmed Aljizeeri, Abdulbaset Sulaiman, Naji Alhulaimi, Ahmed Alsaileek, Mouaz H Al-Mallah
Cardiac Magnetic Resonance Imaging has become a cornerstone in the evaluation of heart failure. It provides a comprehensive evaluation by answering all the pertinent clinical questions across the full pathological spectrum of heart failure. Nowadays, CMR is considered the gold standard in evaluation of ventricular volumes, wall motion and systolic function. Through its unique ability of tissue characterization, it provides incremental diagnostic and prognostic information and thus has emerged as a comprehensive imaging modality in heart failure...
April 22, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28432604/phosphate-imbalance-in-patients-with-heart-failure
#15
REVIEW
E C Christopoulou, T D Filippatos, E Megapanou, M S Elisaf, G Liamis
Patients with heart failure often exhibit electrolyte abnormalities, such as hyponatremia or hypokalemia/hyperkalemia. Although not as common as the other electrolyte disturbances observed in patients with heart failure, phosphate imbalance is also of high importance in this population. The aim of this review is to present the mechanisms of low or high phosphate serum levels in patients with heart failure and its role in the pathogenesis and progression of heart dysfunction. Hypophosphatemia in patients with heart failure may be the result of co-existing electrolyte and acid-base abnormalities, pharmacological treatments, decreased intestinal absorption or secondary to sympathetic nervous system activation and co-morbidities, such as diabetes mellitus or heavy alcohol consumption...
April 22, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28432473/vasopressin-and-vasopressin-antagonists-in-heart-failure
#16
Julie K Vishram-Nielsen, Finn Gustafsson
Despite the introduction of multiple new pharmacological agents over the past three decades in the field of heart failure (HF), overall prognosis remains poor. Hyponatremia is prevalent in HF patients and has been suggested as a contributor to poor response to standard therapy. Elevated levels of arginine vasopressin (AVP), a peptide hormone produced in the hypothalamus, play a role in development of hyponatremia, and AVP and its surrogate, copeptin, are related to changes in osmolality, hemodynamics, neuro-hormones as well as in overall outcome in HF patients...
April 22, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28432434/ventricular-androgenic-anabolic-steroid-related-remodeling-an-immunohistochemical-study
#17
Rossana Cecchi, Barbara Muciaccia, Costantino Ciallella, Natale Mario Di Luca, Akihiko Kimura, Cristina Sestili, Mizuho Nosaka, Toshikazu Kondo
BACKGROUND: Several fatal cases of bodybuilders, following a myocardial infarction after long exposure to androgenic-anabolic steroids (AAS), are reported. In recent years, evidence has emerged of cases of heart failure related to AAS consumption, with no signs of coronary or aorta atherosclerosis. This study aims to further investigate the pathogenesis of the ventricular AAS-related remodeling performing immunohistochemistry (IHC). METHOD: In order to examine innate immunity activity and myocytes and endothelial cell apoptosis, IHC analyses were performed on heart tissue of two cases of bodybuilders who died after years of supratherapeutic use of metelonone and nandrolone and where no atherosclerosis or thrombosis were found, using the following antibodies: anti-CD68, anti-iNOS, anti-CD163, anti-CD 15, anti-CD8, anti-CD4, anti-HIF1 α, and in situ TUNEL staining...
April 21, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28432158/risk-score-for-cardiac-surgery-in-active-left-sided-infective-endocarditis
#18
Carmen Olmos, Isidre Vilacosta, Gilbert Habib, Luis Maroto, Cristina Fernández, Javier López, Cristina Sarriá, Erwan Salaun, Salvatore Di Stefano, Manuel Carnero, Sandrine Hubert, Carlos Ferrera, Gabriela Tirado, Afonso Freitas-Ferraz, Carmen Sáez, Javier Cobiella, Juan Bustamante-Munguira, Cristina Sánchez-Enrique, Pablo Elpidio García-Granja, Cecile Lavoute, Benjamin Obadia, David Vivas, Ángela Gutiérrez, José Alberto San Román
OBJECTIVE: To develop and validate a calculator to predict the risk of in-hospital mortality in patients with active infective endocarditis (IE) undergoing cardiac surgery. METHODS: Thousand two hundred and ninety-nine consecutive patients with IE were prospectively recruited (1996-2014) and retrospectively analysed. Left-sided patients who underwent cardiac surgery (n=671) form our study population and were randomised into development (n=424) and validation (n=247) samples...
April 21, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28432072/translocase-of-inner-membrane-50-functions-as-a-novel-protective-regulator-of-pathological-cardiac-hypertrophy
#19
Kai Tang, Yifan Zhao, Hailing Li, Mengyun Zhu, Weiming Li, Weijing Liu, Guofu Zhu, Dachun Xu, Wenhui Peng, Ya-Wei Xu
BACKGROUND: Translocase of inner membrane 50 (TIM50) is a member of the translocase of inner membrane (TIM) complex in the mitochondria. Previous research has demonstrated the role of TIM50 in the regulation of oxidative stress and cardiac morphology. However, the role of TIM50 in pathological cardiac hypertrophy remains unknown. METHODS AND RESULTS: In the present study we found that the expression of TIM50 was downregulated in hypertrophic hearts. Using genetic loss-of-function animal models, we demonstrated that TIM50 deficiency increased heart and cardiomyocyte size with more severe cardiac fibrosis compared with wild-type littermates...
April 21, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28431980/shear-stress-alterations-in-the-celiac-trunk-of-patients-with-a-continuous-flow-left-ventricular-assist-device-as-shown-by-in-silico-and-in-vitro-flow-analyses
#20
Francesco Scardulla, Salvatore Pasta, Leonardo D'Acquisto, Sergio Sciacca, Valentina Agnese, Christian Vergara, Alfio Quarteroni, Francesco Clemenza, Diego Bellavia, Michele Pilato
BACKGROUND: The use of left ventricular assist devices (LVADs) to treat advanced cardiac heart failure is constantly increasing, although this device leads to high risk for gastrointestinal bleeding. METHODS: Using in-silico flow analysis, we quantified hemodynamic alterations due to continuous-flow LVAD (HeartWare, Inc., Framingham, MA) in the celiac trunk and major branches of the abdominal aorta, and then explored the relationship between wall shear stress (WSS) and celiac trunk orientation...
March 24, 2017: Journal of Heart and Lung Transplantation
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