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Heart failure cardiomyopathy

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https://www.readbyqxmd.com/read/28636901/the-effect-of-cd34-cell-telomere-length-and-htert-expression-on-the-outcome-of-autologous-cd34-cell-transplantation-in-patients-with-chronic-heart-failure
#1
Jasmina-Ziva Rozman, Maja Pohar Perme, Mojca Jez, Elvira Malicev, Metka Krasna, Srdjan Novakovic, Bojan Vrtovec, Primoz Rozman
Age-related telomere attrition in stem/progenitor cells may diminish their functional capacity and thereby impair the outcome of cell-based therapies. The aim of the present study was to investigate the effect of CD34(+) cell telomere length and hTERT expression on the clinical outcome of autologous CD34(+) cell transplantation. We studied 43 patients with cardiomyopathy. Their peripheral blood CD34(+) cells were mobilized with granulocyte colony-stimulating factor, enriched by immunoselection and delivered transendocardially...
June 18, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28630373/incidence-and-time-course-for-developing-heart-failure-with-high-burden-right-ventricular-pacing
#2
Faisal M Merchant, Michael H Hoskins, Dan L Musat, Julie B Prillinger, Gregory J Roberts, Yelena Nabutovsky, Suneet Mittal
BACKGROUND: Although right ventricular pacing can contribute to cardiomyopathy, the impact of complete atrioventricular block (cAVB) on heart failure (HF) development in pacemaker patients has not been well characterized. We evaluated the incidence and time course for developing HF after pacemaker implantation for cAVB. METHODS AND RESULTS: A MarketScan database identified patients undergoing dual-chamber pacemaker implantation from 2008 to 2014. Patients with cAVB were identified by an atrioventricular node ablation or diagnosis of third-degree AVB...
June 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28629836/opposite-effects-of-catalase-and-mnsod-ectopic-expression-on-stress-induced-defects-and-mortality-in-the-desmin-deficient-cardiomyopathy-model
#3
Kleopatra Rapti, Antigoni Diokmetzidou, Ismini Kloukina, Derek J Milner, Aimilia Varela, Constantinos H Davos, Yassemi Capetanaki
Oxidative stress has been linked strongly to cell death and cardiac remodeling processes, all hallmarks of heart failure. Mice deficient for desmin (des-/-), the major muscle specific intermediate filament protein, develop dilated cardiomyopathy and heart failure characterized by mitochondrial defects and cardiomyocyte death. The cellular and biochemical alterations in the hearts of these mice strongly suggest that oxidative stress is one of the mechanisms contributing to the pathogenesis of the phenotype. Recently, we showed that indeed the desmin deficient cardiomyocytes are under increased oxidative stress...
June 16, 2017: Free Radical Biology & Medicine
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
#4
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/28623750/lcz696-improves-cardiac-function-via-alleviating-drp1-mediated-mitochondrial-dysfunction-in-mice-with-doxorubicin-induced-dilated-cardiomyopathy
#5
Yan Xia, Zhangwei Chen, Ao Chen, Mingqiang Fu, Zhen Dong, Kai Hu, Xiangdong Yang, Yunzeng Zou, Aijun Sun, Juying Qian, Junbo Ge
AIMS: LCZ696, a novel angiotensin receptor neprilysin inhibitor, is effective in treating heart failure patients. Doxorubicin (DOX) is an effective antitumor medication but the cardiotoxicity limited its clinical use. In this study, we aimed to determine the effect of LCZ696 on DOX-induced cardiomyopathy in mice and in vitro and to explore related mechanisms focusing on fission protein dynamin-related protein 1 (Drp1). METHODS AND RESULTS: In human study, we found that myocardial fission protein Drp1 expression and its ser 616 phosphorylation were significantly increased in dilated cardiomyopathy (DCM) patients...
June 14, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28623080/increased-constitutive-nitric-oxide-production-by-whole-body-periodic-acceleration-ameliorates-alterations-in-cardiomyocytes-associated-with-utrophin-dystrophin-deficiency
#6
Jose R Lopez, Juan Kolster, Rui Zhang, Jose Adams
Duchenne Muscular Dystrophy (DMD) cardiomyopathy is a progressive lethal disease caused by the lack of the dystrophin protein in the heart. The most widely used animal model of DMD is the dystrophin-deficient mdx mouse; however, these mice exhibit a mild dystrophic phenotype with heart failure only late in life. In contrast, mice deficient for both dystrophin and utrophin (mdx/utrn(-/-), or dKO) can be used to model severe DMD cardiomyopathy where pathophysiological indicators of heart failure are detectable by 8-10weeks of age...
June 13, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28621169/reducing-the-risks-for-relapse-of-heart-failure-in-a-subsequent-pregnancy-after-peripartum-cardiomyopathy
#7
James D Fett
No abstract text is available yet for this article.
June 16, 2017: Future Cardiology
https://www.readbyqxmd.com/read/28620607/metabolic-and-biochemical-stressors-in-diabetic-cardiomyopathy
#8
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/28617969/conditionally-targeted-deletion-of-psen1-leads-to-diastolic-heart-dysfunction
#9
Xiao-Wei Song, Qing-Ning Yuan, Ying Tang, Mi Cao, Ya-Feng Shen, Zhen-Yu Zeng, Chang-Hai Lei, SongHua Li, Xian-Xian Zhao, Yong-Ji Yang
Recently, PSEN1 has been reported to have mutations in dilated cardiomyopathy pedigrees. However, the function and mechanism of PSEN1 in cardiomyopathy remains unresolved. Here, we established 4 types of genetically modified mice to determine the function of PSEN1 in cardiac development and pathology. PSEN1 null mutation resulted in perinatal death, retardation of heart growth, ventricular dilatation, septum defects, and valvular thickening. PSEN1 knockout in adults led to decreased muscle fibers, widened sarcomere Z lines and reduced lengths of sarcomeres in cardiomyocytes...
June 15, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28612913/the-usefulness-of-soluble-st2-and-galectin-3-as-novel-biomarkers-for-better-risk-stratification-in-hypertrophic-cardiomyopathy
#10
Monika Gawor, Mateusz Śpiewak, Jadwiga Janas, Katarzyna Kożuch, Aleksandra Wróbel, Łukasz Mazurkiewicz, Rafał Baranowski, Magdalena Marczak, Jacek Grzybowski
BACKGROUND: Estimation of sudden cardiac death (SCD) risk is an integral part of clinical management of patients with hypertrophic cardiomyopathy (HCM). Identification of novel biomarkers of this disease can provide additional criteria for SCD risk stratification. Soluble suppression of tumorigenicity (sST2) and galectin-3 (Gal-3) are useful biomarkers for prognosis of heart failure (HF). Both of them appear to mediate cardiac fibrosis - an important pathogenetic process in HCM. Data about sST2 and Gal-3 usefulness in patients with HCM are limited...
June 14, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28611348/early-detection-of-subclinical-aortic-valve-endocarditis-with-the-cardiomems-heart-failure-system
#11
Sinan Sarsam, Georgy Kaspar, Shukri David, Marcel Zughaib
BACKGROUND The CardioMEMS Heart Failure System is a well validated tool to optimize management of systolic and diastolic heart failure and has been shown to reduce the risk of hospitalization by 37%. We are reporting a unique case of acute aortic valve insufficiency as a first sign of endocarditis, detected early in a patient with the CardioMEMS device. CASE REPORT A 79-year-old man with dual bioprosthetic mitral and aortic valve replacement and non-ischemic cardiomyopathy had a CardioMEMS Heart Failure System implanted 2 months following valve replacement surgery...
June 14, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28611029/whole-exome-sequencing-identifies-truncating-variants-in-nuclear-envelope-genes-in-patients-with-cardiovascular-disease
#12
Gloria T Haskell, Brian C Jensen, Leigh Ann Samsa, Daniel Marchuk, Wei Huang, Cecile Skrzynia, Christian Tilley, Bryce A Seifert, Edgar A Rivera-Muñoz, Beverly Koller, Kirk C Wilhelmsen, Jiandong Liu, Hassan Alhosaini, Karen E Weck, James P Evans, Jonathan S Berg
BACKGROUND: The genetic variation underlying many heritable forms of cardiovascular disease is incompletely understood, even in patients with strong family history or early age at onset. METHODS AND RESULTS: We used whole exome sequencing to detect pathogenic variants in 55 patients with suspected monogenic forms of cardiovascular disease. Diagnostic analysis of established disease genes identified pathogenic variants in 21.8% of cases and variants of uncertain significance in 34...
June 2017: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/28610944/bilateral-leg-oedema-after-bariatric-surgery-a-selenium-deficient-cardiomyopathy
#13
Pierre-Laurent Massoure, Olivier Camus, Laurent Fourcade, Fabrice Simon
This report describes a case of selenium-deficient cardiomyopathy secondary to bariatric surgery (Roux-en-Y gastric bypass surgery). A 40 year-old woman presented with bilateral leg oedema nine months after the surgical procedure. Timely diagnosis of selenium-deficient cardiomyopathy was due to the recognition of symptoms of heart failure, increased NT pro-BNP level, detection of myocardial diastolic dysfunction and impaired left ventricular global longitudinal strain by echocardiography, and early identification of selenium deficiency...
June 10, 2017: Obesity Research & Clinical Practice
https://www.readbyqxmd.com/read/28608983/folic-acid-reduces-doxorubicin-induced-cardiomyopathy-by-modulating-endothelial-nitric-oxide-synthase
#14
Yanti Octavia, Georgios Kararigas, Martine de Boer, Ihsan Chrifi, Rinrada Kietadisorn, Melissa Swinnen, Hans Duimel, Fons K Verheyen, Maarten M Brandt, Daniela Fliegner, Caroline Cheng, Stefan Janssens, Dirk J Duncker, An L Moens
The use of doxorubicin (DOXO) as a chemotherapeutic drug has been hampered by cardiotoxicity leading to cardiomyopathy and heart failure. Folic acid (FA) is a modulator of endothelial nitric oxide (NO) synthase (eNOS), which in turn is an important player in diseases associated with NO insufficiency or NOS dysregulation, such as pressure overload and myocardial infarction. However, the role of FA in DOXO-induced cardiomyopathy is poorly understood. The aim of this study was to test the hypothesis that FA prevents DOXO-induced cardiomyopathy by modulating eNOS and mitochondrial structure and function...
June 13, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28600096/alcohol-septal-ablation-to-reduce-heart-failure
#15
REVIEW
Joshua McKay, Sherif F Nagueh
Hypertrophic cardiomyopathy is a commonly encountered inheritable cardiac disorder with variable phenotypic expression. Although most patients will have no or mild symptoms, 10% will develop heart failure symptoms refractory to medical management. This article discusses the mechanisms through which hypertrophic cardiomyopathy induces heart failure and how alcohol septal ablation can reverse each of these mechanisms to lead to clinical improvement.
July 2017: Interventional cardiology clinics
https://www.readbyqxmd.com/read/28600085/invasive-hemodynamics-of-myocardial-disease-systolic-and-diastolic-dysfunction-and-hypertrophic-obstructive-cardiomyopathy
#16
REVIEW
Michael Eskander, Morton J Kern
Heart failure is a clinical diagnosis that is supported by various laboratory, imaging, and invasive hemodynamic measures. There is no single diagnostic test. A variety of structural and/or functional myocardial abnormalities can lead to the inability of the heart to fill or eject blood. Despite ejection fraction being the most commonly assessed measure of systolic function in clinical practice, it is a poor measure of contractility because it is susceptible to loading conditions and chamber size. Invasive hemodynamic assessment remains of great importance in the evaluation of patients with myocardial disease or hypertrophic cardiomyopathy...
July 2017: Interventional cardiology clinics
https://www.readbyqxmd.com/read/28597791/value-of-latent-outflow-obstruction-to-predict-clinical-course-of-patients-with-hypertrophic-cardiomyopathy
#17
Fatih Bayrak, Gokhan Kahveci, Ali Buturak, Tansu Karaahmet, Ulaankhuu Batgerel, Atilla Koyuncu, Bulent Mutlu
Objective The frequency, significance and prognostic value of left ventricle obstruction (LVO) induced with provocation (latent LVO) is controversial for hypertrophic cardiomyopathy (HC) patients. This study was designed to assess the value of latent LVO in predicting the clinical course in 101 patients with HC. Methods and results Patients were followed for a mean of 82 ± 48 months (range 2 to 148 months) for clinical end points defined as a composite of cardiovascular death resuscitated cardiac arrest, appropriate defibrillator shock or hospitalization due to worsening of heart failure symptoms...
April 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28597481/peripartum-cardiomyopathy-in-denmark-a-retrospective-population-based-study-of-incidence-management-and-outcome
#18
Anne S Ersbøll, Marianne Johansen, Peter Damm, Steen Rasmussen, Niels G Vejlstrup, Finn Gustafsson
AIM: Population-based European studies of peripartum cardiomyopathy (PPCM) are few. We aimed to estimate the nationwide incidence and outcome of PPCM in Denmark during 2005-2014. METHODS AND RESULTS: The Danish National Birth Register and the Danish National Patient Register were linked and searched for cardiomyopathy and heart failure ICD-10 diagnoses in a period of nine months before to 12 months after a delivery from 1 January 2005 through 31 December 2014. Diagnoses were validated and additional data were extracted from patient charts...
June 8, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28597249/differential-regulation-of-protein-phosphatase-1-pp1-isoforms-in-human-heart-failure-and-atrial-fibrillation
#19
Stefanie Meyer-Roxlau, Simon Lämmle, Annett Opitz, Stephan Künzel, Julius P Joos, Stefan Neef, Karolina Sekeres, Samuel T Sosalla, Friedrich Schöndube, Konstantin Alexiou, Lars S Maier, Dobromir Dobrev, Kaomei Guan, Silvio Weber, Ali El-Armouche
Protein phosphatase 1 (PP1) is a key regulator of important cardiac signaling pathways. Dysregulation of PP1 has been heavily implicated in cardiac dysfunctions. Accordingly, pharmacological targeting of PP1 activity is considered for therapeutic intervention in human cardiomyopathies. Recent evidence from animal models implicated previously unrecognized, isoform-specific activities of PP1 in the healthy and diseased heart. Therefore, this study examined the expression of the distinct PP1 isoforms PP1α, β, and γ in human heart failure (HF) and atrial fibrillation (AF) and addressed the consequences of β-adrenoceptor blocker (beta-blocker) therapy for HF patients with reduced ejection fraction on PP1 isoform expression...
July 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28595844/subclinical-myocardial-impairment-in-metabolic%C3%A2-diseases
#20
REVIEW
Wojciech Kosmala, Prash Sanders, Thomas H Marwick
Type 2 diabetes mellitus (T2DM) and obesity are important contributors to nonischemic heart failure (HF) and atrial fibrillation. There is a 2- to 5-fold increase in HF associated with T2DM, and there is a 5% in HF risk in men and 7% increment in women for every unit increment in body mass index, after adjustment for traditional cardiovascular risk factors. Likewise, the risk of atrial fibrillation increases by about 6% per unit increase in body mass index. Metabolic cardiomyopathy leads to a number of changes in cardiac structure and function that can be recognized by imaging in the asymptomatic phase, and these parameters can be used for monitoring the progression of disease or the response to therapy...
June 2017: JACC. Cardiovascular Imaging
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