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Reversing heart disease

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https://www.readbyqxmd.com/read/27906521/modeling-the-human-scarred-heart-in-vitro-toward-new-tissue-engineered-models
#1
Janine C Deddens, Amir Hossein Sadeghi, Jesper Hjortnaes, Linda W van Laake, Marc Buijsrogge, Pieter A Doevendans, Ali Khademhosseini, Joost P G Sluijter
Cardiac remodeling is critical for effective tissue healing, however, excessive production and deposition of extracellular matrix components contribute to scarring and failing of the heart. Despite the fact that novel therapies have emerged, there are still no lifelong solutions for this problem. An urgent need exists to improve the understanding of adverse cardiac remodeling in order to develop new therapeutic interventions that will prevent, reverse, or regenerate the fibrotic changes in the failing heart...
December 1, 2016: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/27895893/downregulation-of-long-non-coding-rna-h19-promotes-p19cl6-cells-proliferation-and-inhibits-apoptosis-during-late-stage-cardiac-differentiation-via-mir-19b-modulated-sox6
#2
Yu Han, Hongdang Xu, Jiangtao Cheng, Yanwei Zhang, Chuanyu Gao, Taibing Fan, Bangtian Peng, Bin Li, Lin Liu, Zhaoyun Cheng
BACKGROUND: Regulating cardiac differentiation to maintain normal heart development and function is very important. At present, biological functions of H19 in cardiac differentiation is not completely clear. METHODS: To explore the functional effect of H19 during cardiac differentiation. Expression levels of early cardiac-specific markers Nkx-2.5 and GATA4, cardiac contractile protein genes α-MHC and MLC-2v were determined by qRT-PCR and western lot. The levels of lncRNA H19 and miR-19b were detected by qRT-PCR...
2016: Cell & Bioscience
https://www.readbyqxmd.com/read/27884234/the-hypertensive-myocardium-from-microscopic-lesions-to-clinical-complications-and-outcomes
#3
REVIEW
María U Moreno, Rocío Eiros, Juan J Gavira, Catalina Gallego, Arantxa González, Susana Ravassa, Begoña López, Javier Beaumont, Gorka San José, Javier Díez
The chronic hemodynamic load imposed by hypertension on the left ventricle leads to lesions in the myocardium that result in structural remodeling, which provides support for alterations in cardiac function, perfusion, and electrical activity that adversely influence the clinical evolution of hypertensive heart disease. Management must include detecting, reducing, and reversing left ventricular hypertrophy, as well as the detection and repair of microscopic lesions responsible for myocardial remodeling. Reducing the burden associated with hypertensive heart disease can be targeted using personalized treatment...
January 2017: Medical Clinics of North America
https://www.readbyqxmd.com/read/27882144/effect-of-cyclosporin-a-intervention-on-the-immunological-mechanisms-of-coronary-heart-disease-and-restenosis
#4
Xuan Wang, Yue-Cheng Hu, Ru-Yan Zhang, Dong-Xia Jin, Yuan Jiang, He-Nan Zhang, Hong-Liang Cong
The present study aimed to investigate the effect of cyclosporin A (CSA) intervention on the immunological mechanisms underlying coronary heart disease (CHD) and restenosis (RS) in rabbits. A total of 48 rabbits were randomly divided into normal control (N), N + CSA, CHD model, CHD + CSA, RS model and RS + CSA groups. Rabbits in the respective groups received different treatments prior to sacrifice at the end of week 12. Iliac arteries were harvested from the rabbits for morphological analysis and to determine the mRNA and protein expression levels of cluster of differentiation (CD) 40/CD40 ligand (CD40L), CD134/CD134 ligand (CD134L) and inflammatory factors, including matrix metalloproteinase (MMP)-1, MMP-9, vascular cell adhesion protein (VCAM)-1, interleukin (IL)-6 and tumor necrosis factor (TNF)-α, by reverse transcription-quantitative polymerase chain reaction and immunohistochemical staining...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27873215/current-and-future-treatment-approaches-in-transthyretin-familial-amyloid-polyneuropathy
#5
REVIEW
Philippe Kerschen, Violaine Planté-Bordeneuve
Treatment of transthyretin familial amyloid polyneuropathy (TTR FAP) must be tailored to disease stage. Patients with early stage disease (i.e., without major impairment in walking ability), especially younger patients, should be referred as soon as possible for liver transplantation (LT) in the absence of major comorbid conditions. LT remains the most effective treatment option to date and should be offered to these patients as early as possible. Bridging therapy with an oral TTR stabilizer (tafamidis or diflunisal, according to local access to these treatments) should be started as soon as the diagnosis of TTR FAP is established...
December 2016: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/27867456/heart-failure-in-children
#6
REVIEW
N Jayaprasad
Heart failure (HF) in children differs from that in adults in many respects. The causes and clinical presentations may differ considerably among children of different age groups and between children and adults. The time of onset of HF holds the key to the etiological diagnosis. Clinical presentation of HF in younger children can be nonspecific requiring heightened degree of suspicion. The overall outcome with HF is better in children than in adults as HF in children is commonly due to structural heart disease and reversible conditions which are amenable to therapy...
July 2016: Heart Views: the Official Journal of the Gulf Heart Association
https://www.readbyqxmd.com/read/27866028/lifetime-competing-risks-between-coronary-heart-disease-mortality-and-other-causes-of-death-during-50years-of-follow-up
#7
Paolo Emilio Puddu, Paolo Piras, Alessandro Menotti
OBJECTIVES: To study coronary heart disease (CHD) death versus 11 other causes of death using the cumulative incidence function (CIF) and the competing risks procedures to disentangle the differential role of risk factors for different end-points. MATERIAL AND METHODS: Standard Cox and Fine-Gray models among 1712 middle-aged men were compared during 50years of follow-up. CHD death was the primary event, while deaths from 11 selected causes, mutually exclusive from the primary end-point, were considered as secondary events...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27864612/secretory-products-from-epicardial-adipose-tissue-from-patients-with-type-2-diabetes-impair-mitochondrial-%C3%AE-oxidation-in-cardiomyocytes-via-activation-of-the-cardiac-renin-angiotensin-system-and-induction-of-mir-208a
#8
Marcel Blumensatt, Pia Fahlbusch, Rebecca Hilgers, Marlies Bekaert, Daniella Herzfeld de Wiza, Payam Akhyari, Johannes B Ruige, D Margriet Ouwens
Secretory products from epicardial adipose tissue (EAT) from patients with type 2 diabetes (T2D) impair cardiomyocyte function. These changes associate with alterations in miRNA expression, including the induction of miR-208a. Recent studies suggest that activation of the cardiac-specific renin-angiotensin system (RAS) may affect cardiac energy metabolism via induction of miR-208a. This study investigated whether cardiomyocyte dysfunction induced by conditioned media (CM) from EAT-T2D involves activation of the RAS/miR-208a pathway...
January 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/27861431/pediatric-artificial-lung-a-low-resistance-pumpless-artificial-lung-alleviates-an-acute-lamb-model-of-increased-right-ventricle-afterload
#9
Fares Alghanem, Benjamin S Bryner, Emilia M Jahangir, Uditha P Fernando, John M Trahanas, Hayley R Hoffman, Robert H Bartlett, Alvaro Rojas-Peña, Ronald B Hirschl
Lung disease in children often results in pulmonary hypertension and right heart failure. The availability of a pediatric artificial lung (PAL) would open new approaches to the management of these conditions by bridging to recovery in acute disease or transplantation in chronic disease. This study investigates the efficacy of a novel PAL in alleviating an animal model of pulmonary hypertension and increased right ventricle afterload.Five juvenile lambs (20-30 Kg) underwent PAL implantation in a pulmonary artery to left atrium configuration...
November 15, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/27855288/should-pre-operative-left-atrial-volume-receive-more-consideration-in-patients-with-degenerative-mitral-valve-disease-undergoing-mitral-valve-surgery
#10
Giuseppe Di Gioia, Simona Mega, Antonio Nenna, Cosimo Marco Campanale, Iginio Colaiori, Domenico Scordino, Laura Ragni, Marco Miglionico, Germano Di Sciascio
BACKGROUND: Severe primary mitral regurgitation (MR) carries a significant incidence of mortality and morbidity. Though a number of prognostic factors have been identified, the best timing for mitral valve repair is still debated. We assessed the role of Left Atrial Volume Indexed (LAVI) as predictor of adverse events after mitral valve surgery. METHODS: 134 patients with severe MR were studied with a follow-up of 42±16months. Endpoints were Post-Operative Atrial Fibrillation (POAF), atrial and ventricular remodeling (LARR/LVRR) and correlation with outcome...
November 8, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27855182/a-non-human-primate-model-of-severe-pneumococcal-pneumonia
#11
Luis F Reyes, Marcos I Restrepo, Cecilia A Hinojosa, Nilam J Soni, Anukul T Shenoy, Ryan P Gilley, Norberto Gonzalez-Juarbe, Julio R Noda, Vicki T Winter, Melissa A de la Garza, Robert E Shade, Jacqueline J Coalson, Luis D Giavedoni, Antonio Anzueto, Carlos J Orihuela
RATIONALE: Streptococcus pneumoniae is the leading cause of community-acquired pneumonia and infectious death in adults worldwide. A non-human primate model is needed to study the molecular mechanisms that underlie the development of severe pneumonia, identify diagnostic tools, explore potential therapeutic targets, and test clinical interventions during pneumococcal pneumonia. OBJECTIVE: To develop a non-human primate model of pneumococcal pneumonia. METHODS: Seven adult baboons (Papio cynocephalus) were surgically tethered to a continuous monitoring system that recorded heart rate, temperature, and electrocardiography...
2016: PloS One
https://www.readbyqxmd.com/read/27854125/apelin-apj-system-a-novel-therapeutic-target-for-myocardial-ischemia-reperfusion-injury
#12
Zhe Chen, Di Wu, Lanfang Li, Linxi Chen
Apelin is the endogenous ligand of the G protein-coupled receptor, APJ. Recently, researches indicate that the apelin/APJ system involves in myocardial ischemia-reperfusion injury (MIRI), which is a common pathophysiological process in patients with heart diseases and therapies. The reperfusion induces the expression of apelin and APJ receptor, which play an important role in cardioprotection of MIRI. The apelin/APJ system alleviates MIRI mainly by decreasing mitochondrial reactive oxygen species and delaying the opening of mitochondrial permeability transition pores, which induce the initiation of mitophagy...
November 17, 2016: DNA and Cell Biology
https://www.readbyqxmd.com/read/27852654/cobalt-cardiomyopathy-a-critical-reappraisal-in-light-of-a-recent-resurgence
#13
Milton Packer
Cobalt can cause a distinctive, rapidly progressive and reversible depression of cardiac systolic function, which is readily distinguished from other causes of cardiomyopathy. Patients present with the subacute onset of severe heart failure, which is accompanied by hypotension and cyanosis, pericardial effusion, low voltage on the electrocardiogram, marked elevation of serum enzymes, and lactic acidosis. They typically have a history of lethargy, anorexia, and weight loss in the months preceding the illness and exhibit other evidence of cobalt's effects on the body (eg, polycythemia and goiter)...
December 2016: Circulation. Heart Failure
https://www.readbyqxmd.com/read/27851839/diagnosis-treatment-and-clinical-management-of-pulmonary-arterial-hypertension-in-the-contemporary-era-a-review
#14
Bradley A Maron, Nazzareno Galiè
Importance: Pulmonary arterial hypertension (PAH) is characterized by severe remodeling of the distal pulmonary arteries, increased pulmonary vascular resistance, and right ventricular dysfunction that promotes heart failure. Once regarded as largely untreatable, evidence-based decision making now guides clinical management of PAH and improves outcomes. However, misconceptions regarding the approach to PAH in the modern era are common and associated with substandard clinical care. Observations: The clinical profile of PAH has changed substantially since its original description...
November 16, 2016: JAMA Cardiology
https://www.readbyqxmd.com/read/27843430/cirrhotic-cardiomyopathy-another-case-of-a-successful-approach-to-treatment-of-hepatorenal-syndrome
#15
Luis Otávio Mocarzel, Jessica Bicca, Luiza Jarske, Thamires Oliveira, Pedro Lanzieri, Ronaldo Gismondi, Mario Luiz Ribeiro
Hepatorenal syndrome (HRS) is defined as a failure of renal function, potentially reversible, in patients with liver cirrhosis and ascites. Recently, a component of cardiomyopathy associated with HRS was described, but the use of positive inotropic medicine as part of the treatment of the acute phase has not been extensively evaluated. We report a second case in our hospital of a patient with HRS type I without previous heart disease, with secondary hemodynamic decompensation due to liver disease, in which the abnormalities in systolic function by speckle-tracking echocardiography were observed and could be reversed by the use of inotropes...
September 2016: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/27837563/stem-cell-banking-and-its-impact-on-cardiac-regenerative-medicine
#16
Silvana Bardelli, Marco Moccetti
Cardiovascular diseases, including heart failure, are the most frequent cause of death annually, even higher than any other pathologies. Specifically, patients who suffer from myocardial infarction may encounter adverse remodeling processes of the heart that can ultimately lead to heart failure. Prognosis of patients affected by heart failure is very poor with 5-year mortality close to 50 %. Despite the impressive progress in the clinical treatment of heart failure in recent years, heart transplantation is still required to avoid death as the result of the inexorable decline in cardiac function...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27837306/circulating-microrna-as-a-novel-biomarker-for-pulmonary-arterial-hypertension-due-to-congenital-heart-disease
#17
Weidan Chen, Shoujun Li
Circulating microRNAs (miRNAs) have recently been indicated as practical and promising biomarkers for various diseases. However, circulating miRNAs have not been found to be biomarkers for pulmonary arterial hypertension (PAH) due to congenital heart disease. PAH is defined by a mean pulmonary arterial pressure (mPAP) >25 mmHg at rest. Blood samples and lung tissues were collected from patients with severe PAH due to ventricular septal defect (VSD) (PAH group, mPAP >45 mmHg, n=14) and patients with VSD but non-PAH (control group, mPAP <25 mmHg, n=16)...
November 11, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27834139/microrna-130a-regulation-of-desmocollin-2-in-a-novel-model-of-arrhythmogenic-cardiomyopathy
#18
Stefan R Mazurek, Tyler Calway, Cynthia Harmon, Priyanka Farrell, Gene H Kim
BACKGROUND: MicroRNAs are small noncoding RNA molecules that play a critical role in regulating physiological and disease processes. Recent studies have now recognized microRNAs as an important player in cardiac arrhythmogenesis. Molecular insight into arrhythmogenic cardiomyopathy (AC) has primarily focused on mutations in desmosome proteins. To our knowledge, models of AC due to microRNA dysregulation have not been reported. Previously, we reported on miR-130a mediated down-regulation of Connexin43...
November 9, 2016: MicroRNA
https://www.readbyqxmd.com/read/27834123/translational-applications-of-tissue-engineering-in-cardiovascular-medicine
#19
Y Murat Elçin, Arin Dogan, Eser Elçin
Cardiovascular diseases are the leading cause of worldwide deaths. Current paradigm in medicine seeks novel approaches for the treatment of progressive or end-stage diseases. The organ transplantation option is limited in availability and unfortunately, a great number of patients are lost while waiting for donor organs. Animal studies have shown that upon myocardial infarction, it may be possible to stop adverse remodeling in its tracks and reverse with tissue engineering methods. Regaining the myocardium function and avoiding further deterioration towards heart failure can benefit millions of people with a significantly lesser burden on healthcare systems worldwide...
November 11, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27832939/roles-and-regulation-of-protein-phosphatase-2a-pp2a-in-the-heart
#20
Ellen R Lubbers, Peter J Mohler
Reversible protein phosphorylation is central to a variety of cardiac processes including excitation-contraction coupling, Ca(2+) handling, cell metabolism, myofilament regulation, and cell-cell communication. While kinase pathways linked with elevated adrenergic signaling have been a major focus for the cardiovascular field over the past half century, new findings support the critical role of protein phosphatases in both health and disease. Protein phosphatase 2A (PP2A) is a central cardiac phosphatase that regulates diverse myocyte functions through a host of target molecules...
November 8, 2016: Journal of Molecular and Cellular Cardiology
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