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Cardiac remodeling

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https://www.readbyqxmd.com/read/29453696/interrelationship-between-diabetes-mellitus-and-heart-failure-the-role-of-peroxisome-proliferator-activated-receptors-in-left-ventricle-performance
#1
REVIEW
Evangelos Oikonomou, Konstantinos Mourouzis, Petros Fountoulakis, Georgios Angelos Papamikroulis, Gerasimos Siasos, Alexis Antonopoulos, Georgia Vogiatzi, Sotiris Tsalamadris, Manolis Vavuranakis, Dimitris Tousoulis
Heart failure (HF) is a common cardiac syndrome, whose pathophysiology involves complex mechanisms, some of which remain unknown. Diabetes mellitus (DM) constitutes not only a glucose metabolic disorder accompanied by insulin resistance but also a risk factor for cardiovascular disease and HF. During the last years though emerging data set up, a bidirectional interrelationship between these two entities. In the case of DM impaired calcium homeostasis, free fatty acid metabolism, redox state, and advance glycation end products may accelerate cardiac dysfunction...
February 17, 2018: Heart Failure Reviews
https://www.readbyqxmd.com/read/29452236/cardiac-and-placental-mitochondrial-characterization-in-a-rabbit-model-of-intrauterine-growth-restriction
#2
M Guitart-Mampel, A Gonzalez-Tendero, S Niñerola, C Morén, M Catalán-Garcia, I González-Casacuberta, D L Juárez-Flores, O Ugarteburu, L Matalonga, M V Cascajo, F Tort, A Cortés, E Tobias, J C Milisenda, J M Grau, F Crispi, E Gratacós, G Garrabou, F Cardellach
BACKGROUND: Intrauterine growth restriction (IUGR) is associated with cardiovascular remodeling persisting into adulthood. Mitochondrial bioenergetics, essential for embryonic development and cardiovascular function, are regulated by nuclear effectors as sirtuins. A rabbit model of IUGR and cardiovascular remodeling was generated, in which heart mitochondrial alterations were observed by microscopic and transcriptomic analysis. We aimed to evaluate if such alterations are translated at a functional mitochondrial level to establish the etiopathology and potential therapeutic targets for this obstetric complication...
February 13, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29452090/activation-of-calcium-sensing-receptor-mediated-autophagy-in-angiotensinii-induced-cardiac-fibrosis-in-vitro
#3
Jinyu Chi, Lei Wang, Xiaohui Zhang, Yu Fu, Yue Liu, Wenjia Chen, Wenxiu Liu, Zhiyu Shi, Xinhua Yin
Cardiac fibrosis is one of the primary mechanisms of ventricular remodeling, and there is no effective method for reversal. Activation of calcium sensing receptor (CaSR) has been reported to be involved in the development of myocardial fibrosis, but the molecular mechanism for CaSR activation has not yet been clarified and needs to be further explored. Here, we found that AngII induces cardiac fibroblast proliferation and phenotypic transformation in a dose-dependent manner with increased CaSR and autophagy related protein (Beclin1, LC3B) expression...
February 13, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29449707/modulation-of-cardiac-stem-cell-characteristics-by-metoprolol-in-hypertensive-heart-disease
#4
Sherin Saheera, Ajay Godwin Potnuri, Renuka R Nair
Cardiac stem cells (CSCs) play a vital role in cardiac remodeling. Uncontrolled hypertension leads to cardiac hypertrophy, followed by cardiac failure. Pathological remodeling is associated with enhanced oxidative stress. Decreased cardiac stem cell efficiency is speculated in heart diseases. Maintaining a healthy stem cell population is essential for preventing progressive cardiac remodeling. Some anti-hypertensive drugs are cardioprotective. However, the effect of these drugs on CSCs has not been investigated...
February 15, 2018: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/29449364/diabetic-cardiomyopathy-an-update-of-mechanisms-contributing-to-this-clinical-entity
#5
REVIEW
Guanghong Jia, Michael A Hill, James R Sowers
Heart failure and related morbidity and mortality are increasing at an alarming rate, in large part, because of increases in aging, obesity, and diabetes mellitus. The clinical outcomes associated with heart failure are considerably worse for patients with diabetes mellitus than for those without diabetes mellitus. In people with diabetes mellitus, the presence of myocardial dysfunction in the absence of overt clinical coronary artery disease, valvular disease, and other conventional cardiovascular risk factors, such as hypertension and dyslipidemia, has led to the descriptive terminology, diabetic cardiomyopathy...
February 16, 2018: Circulation Research
https://www.readbyqxmd.com/read/29447430/aucubin-protects-against-pressure-overload-induced-cardiac-remodelling-via-%C3%AE-3-ar-nnos-cascades
#6
Qing-Qing Wu, Yang- Xiao, Ming-Xia Duan, Yuan Yuan, Xiao-Han Jiang, Zheng Yang, Hai-Han Liao, Wei Deng, Qi-Zhu Tang
BACKGROUND AND PURPOSE: Aucubin, the predominant component of Eucommia ulmoides Oliv., plays an indispensable role in regulating oxidative stress. Considering that oxidative stress has previously been demonstrated to contribute to acute and chronic myocardial injury, we tested the effects of aucubin on cardiac remodelling and heart failure. EXPERIMENTAL APPROACH: In the first set of experiments, H9c2 cardiomyocytes and neonatal rat cardiomyocytes pre-treated with aucubin (1, 3 10, 25, 50 μM) were challenged with phenylephrine...
February 15, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29447000/ghrelin-prevents-cardiac-cell-apoptosis-during-cardiac-remodelling-post-experimentally-induced-myocardial-infarction-in-rats-via-activation-of-raf-mek1-2-erk1-2-signalling
#7
Refaat A Eid, Mahmoud A Alkhateeb, Mubarak Al-Shraim, Samy M Eleawa, Abdullah S Shatoor, Attalla Farag El-Kott, Mohamed Samir Ahmed Zaki, Khalid A Shatoor, Ismaeel Bin-Jaliah, Fahaid H Al-Hashem
CONTEXT: Mechanisms by which ghrelin affords its cardioprotection in mammals remained unclear. OBJECTIVE: To examine if ghrelin confers cardio-protection during cardiac remodelling post-MI by modulating the RAF-1-MEK1/2-ERK1/2 signalling pathway. MATERIALS AND METHODS: Rats were divided into control, sham, sham + ghrelin, myocardial infarction (MI), and MI + ghrelin groups. Ghrelin (100 µg/kg) was administered for 21 days, starting one-day post-MI...
February 15, 2018: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29446710/early-versus-late-cardiac-remodelling-during-right-ventricular-pressure-load-and-impact-of-preventive-versus-rescue-therapy-with-endothelin-1-receptor-blockers
#8
Sara Roldan Ramons, Guido Ehrenfried Pieles, Mei Sun, Cameron Slorach, Wei Hui, Mark K Friedberg
BACKGROUND: Pulmonary artery banding (PAB) causes right ventricular (RV) dysfunction, biventricular fibrosis and apoptosis which are attenuated by endothelin-1 (ET1) receptor blockade (ERB). Little is known about the time-course of remodelling and whether early versus late ERB confers improved outcome. MATERIALS AND METHODS: PAB was performed in 5-groups of rabbits: Shams, 3W (3-weeksPAB), 6W (6-weeksPAB), 6WERB1 (6-weeksPAB+ERB from day-1) and 6WERB21 (6-weeksPAB+ERB from day-21)...
February 15, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29445778/nadph-oxidase-4-driven-cardiac-macrophage-polarization-protects-against-myocardial-infarction-induced-remodeling
#9
Heloise Mongue-Din, Ashish S Patel, Yee H Looi, David J Grieve, Narayana Anilkumar, Alexander Sirker, Xuebin Dong, Alison C Brewer, Min Zhang, Alberto Smith, Ajay M Shah
The reactive oxygen species-generating enzyme NADPH oxidase 4 (Nox4) is up-regulated in the heart after myocardial infarction (MI). Mice with cardiomyocyte-targeted Nox4 overexpression (TG) displayed increased macrophages in the heart at baseline, with skewing toward an M2 phenotype compared with wild-type controls (WT). After MI, TG mice had a higher proportion of M2 macrophages along with higher survival, decreased cardiac remodeling, and better contractile function than wild-type mice. The post-MI increase in cardiac matrix metalloproteinase-2 activity was substantially blunted in TG mice...
December 2017: JACC. Basic to Translational Science
https://www.readbyqxmd.com/read/29445083/fibroblast-growth-factor-21-prevents-diabetic-cardiomyopathy-via-ampk-mediated-antioxidation-and-lipid-lowering-effects-in-the-heart
#10
Hong Yang, Anyun Feng, Sundong Lin, Lechu Yu, Xiufei Lin, Xiaoqing Yan, Xuemian Lu, Chi Zhang
Our previous studies showed that both exogenous and endogenous FGF21 inhibited cardiac apoptosis at the early stage of type 1 diabetes. Whether FGF21 induces preventive effect on type 2 diabetes-induced cardiomyopathy was investigated in the present study. High-fat-diet/streptozotocin-induced type 2 diabetes was established in both wild-type (WT) and FGF21-knockout (FGF21-KO) mice followed by treating with FGF21 for 4 months. Diabetic cardiomyopathy (DCM) was diagnosed by significant cardiac dysfunction, remodeling, and cardiac lipid accumulation associated with increased apoptosis, inflammation, and oxidative stress, which was aggravated in FGF21-KO mice...
February 14, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29444988/nmda-type-glutamate-receptor-activation-promotes-vascular-remodeling-and-pulmonary-arterial-hypertension
#11
Sébastien J Dumas, Gilles Bru-Mercier, Audrey Courboulin, Marceau Quatredeniers, Catherine Rücker-Martin, Fabrice Antigny, Morad K Nakhleh, Benoit Ranchoux, Elodie Gouadon, Maria-Candida Vinhas, Matthieu Vocelle, Nicolas Raymond, Peter Dorfmüller, Elie Fadel, Frédéric Perros, Marc Humbert, Sylvia Cohen-Kaminsky
Background -Excessive proliferation and apoptosis resistance in pulmonary vascular cells underlie vascular remodeling in pulmonary arterial hypertension (PAH). Specific treatments for PAH exist, mostly targeting endothelial dysfunction, but high pulmonary arterial pressure still causes heart failure and death. Pulmonary vascular remodeling may be driven by metabolic reprogramming of vascular cells to increase glutaminolysis and glutamate production. The N-methyl-D-aspartate receptor (NMDAR), a major neuronal glutamate receptor, is also expressed on vascular cells, but its role in PAH is unknown...
February 14, 2018: Circulation
https://www.readbyqxmd.com/read/29444724/early-postoperative-remodelling-following-repair-of-tetralogy-of-fallot-utilising-unsedated-cardiac-magnetic-resonance-a-pilot-study
#12
Michael P DiLorenzo, Elizabeth Goldmuntz, Susan C Nicolson, Mark A Fogel, Laura Mercer-Rosa
Introduction The right ventricular adaptations early after surgery in infants with tetralogy of Fallot are important to understand the changes that occur later on in life; this physiology has not been fully delineated. We sought to assess early postoperative right ventricular remodelling in patients with tetralogy of Fallot by cardiac MRI. Materials and method Subjects with tetralogy of Fallot under 1 year of age were recruited following complete surgical repair for tetralogy of Fallot. Protocol-based cardiac MRI to assess anatomy, function, and flows was performed before hospital discharge using the feed and sleep technique, an unsedated imaging technique...
February 15, 2018: Cardiology in the Young
https://www.readbyqxmd.com/read/29444209/geranylgeranyl-pyrophosphate-synthase-facilitates-the-organization-of-cardiomyocytes-during-mid-gestation-through-modulating-protein-geranylgeranylation-in-mouse-heart
#13
Zhong Chen, Na Xu, Danyang Chong, Shan Guan, Chen Jiang, Zhongzhou Yang, Chaojun Li
Aims: With the maturation of placenta, ventricular chamber maturation enhances cardiac contractile performance to adapt to the metabolic demand of growing embryo. The organization of cardiomyocytes is required for the morphological remodeling in ventricular chamber maturation. However, the mechanism governing the establishment of cardiac cytoarchitecture during ventricular chamber maturation is still poorly studied. Methods and results: Here, we found that the expression of geranylgeranyl pyrophosphate synthase (Ggpps), which mediates protein geranylgeranylation, increased in the mouse heart after the onset of placental function...
February 12, 2018: Cardiovascular Research
https://www.readbyqxmd.com/read/29442461/central-aortic-pressure-arterial-stiffness-and-echocardiographic-parameters-of-children-with-overweight-obesity-and-arterial-hypertension
#14
Jerzy Wójtowicz, Aleksandra Łempicka, Włodzimierz Łuczyński, Wojciech Szczepański, Aleksandra Zomerfeld, Kornel Semeran, Artur Bossowski
BACKGROUND: A non-invasive estimation of central aortic pressure and echocardiographic parameters, and appropriate interpretation thereof make it possible to determine the status of the vascular wall and myocardium. These parameters are early markers of unfavorable remodeling of the cardiovascular system. OBJECTIVES: The aim of this study was to analyze the central aortic pressure and echocardiographic parameters of overweight/obese children (with or without concomitant arterial hypertension)...
December 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29441344/implementation-of-a-sustainable-training-system-for-emergency-in-vietnam
#15
REVIEW
Sunjoo Kang, Hyejin Seo, Binh Duy Ho, Phuong Thi Anh Nguyen
Purpose: This study analyzed the project outcomes to share lessons regarding the development of an emergency medicine education system in Vietnam. Methods: Retrospective evaluation was implemented using project outcome indicators. Results: A total of 13 training courses were administered, with the collaboration of international experts in Korea and Vietnam. A total of 23 kinds of emergency medicine education equipment were purchased, and a basic life support (BLS) and two advanced cardiac life support labs were remodeled to provide appropriate simulation training...
2018: Frontiers in Public Health
https://www.readbyqxmd.com/read/29440391/sirt2-deacetylase-represses-nfat-transcription-factor-to-maintain-cardiac-homeostasis
#16
Mohsen Sarikhani, Sangeeta Maity, Sneha Mishra, Aditi Jain, Ankit K Tamta, Venkatraman Ravi, Kondapalli M Spurthi, Perumal A Desingu, Danish Khan, Shweta Kumar, Swathi Rao, Meena Inbaraj, Pandit A Shriniwas, Nagalingam Ravi Sundaresan
Heart failure is an aging-associated disease, which is the leading cause of death world-wide. Sirtuin family members have been largely studied in the context of aging and aging-associated diseases. Sirtuin 2 (SIRT2) is a cytoplasmic protein in the family of sirtuins that are NAD+-dependent class III histone deacetylases. In this work, we studied the role of SIRT2 in regulating NFAT transcription factor and the development of cardiac hypertrophy. Confocal microscopy analysis indicated that SIRT2 is localized in the cytoplasm of cardiomyocytes and SIRT2 levels are reduced during pathological hypertrophy of the heart...
February 13, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29440218/impact-of-renin-angiotensin-system-inhibitors-on-clinical-outcomes-and-ventricular-remodelling-after-transcatheter-aortic-valve-implantation-rationale-and-design-of-the-rastavi-randomised-multicentre-study
#17
Ignacio J Amat-Santos, Pablo Catalá, Felipe Diez Del Hoyo, Jose A Fernandez-Diaz, Juan H Alonso-Briales, María Del Trigo, Ander Regueiro, Pablo Juan-Salvadores, Vicenç Serra, Enrique Gutierrez-Ibanes, Antonio J Muñoz-García, Luis Nombela-Franco, Manel Sabate, Victor A Jimenez-Diaz, Bruno García Del Blanco, Javier López, Luis H Varela-Falcón, Teresa Sevilla, Roman Arnold, Ana Revilla, J Alberto San Roman
INTRODUCTION: Transcatheter aortic valve implantation (TAVI) as a treatment in severe aortic stenosis (AS) is an excellent alternative to conventional surgical replacement. However, long-term outcomes are not benign. Renin-angiotensin system (RAS) blockade has shown benefit in terms of adverse remodelling in severe AS and after surgical replacement. METHODS AND ANALYSIS: The RAS blockade after TAVI (RASTAVI) trial aims to detect if there is a benefit in clinical outcomes and ventricular remodelling with this therapeutic strategy following the TAVI procedure...
February 13, 2018: BMJ Open
https://www.readbyqxmd.com/read/29438665/cartilage-intermediate-layer-protein-1-alleviates-pressure-overload-induced-cardiac-fibrosis-via-interfering-tgf-%C3%AE-1-signaling
#18
Cheng-Lin Zhang, Qian Zhao, Hui Liang, Xue Qiao, Jin-Yu Wang, Dan Wu, Li-Ling Wu, Li Li
Cardiac fibrosis is characterized by excessive deposition of extracellular matrix (ECM) proteins in the myocardium and results in decreased ventricular compliance and diastolic dysfunction. Cartilage intermediate layer protein-1 (CILP-1), a novel identified cardiac matricellular protein, is upregulated in most conditions associated with cardiac remodeling, however, whether CILP-1 is involved in pressure overload-induced fibrotic response is unknown. Here, we investigated whether CILP-1 was critically involved in the fibrotic remodeling induced by pressure overload...
February 10, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29436714/gch1-attenuates-cardiac-autonomic-nervous-remodeling-in-canines-with-atrial-tachypacing-via-tetrahydrobiopterin-pathway-regulated-by-microrna-206
#19
Jinqiu Wei, Yujiao Zhang, Zhan Li, Ximin Wang, Linlin Chen, Juanjuan Du, Jing Liu, Ju Liu, Yinglong Hou
BACKGROUND/AIMS: Cardiac autonomic nerve remodeling (ANR) is an important mechanism of atrial fibrillation (AF).GTP cyclohydrolase I (GTPCH-1), encoded by GCH1, is the rate-limiting enzyme in de novosynthesis of tetrahydrobiopterin (BH4), an essential cofactor for nitric oxide (NO) synthesis. Previous studies reported that increased BH4 and NO content negatively regulated nerve regeneration. This study investigated effects of GCH1on ANR via BH4 pathway, regulated by microRNA-206 (miR-206)...
February 13, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29436257/accelerated-collagen-turnover-in-women-with-angina-pectoris-without-obstructive-coronary-artery-disease-an-ipower-substudy
#20
Signe H Nielsen, Naja D Mygind, Marie M Michelsen, Daria F Bechsgaard, Hannah E Suhrs, Federica Genovese, Henning B Nielsen, Susanne Brix, Morten Karsdal, Eva Prescott, Jens Kastrup
Aim Collagens are major cardiac extracellular matrix components, known to be actively remodelled and accumulated during diffuse myocardial fibrosis. We evaluated whether accelerated collagen turnover described by neo-epitope biomarkers reflecting collagen formation and degradation separates patients with diffuse myocardial fibrosis from asymptomatic controls. Methods and results Seventy-one women with angina pectoris without significant coronary artery disease assessed by invasive coronary angiogram were included...
January 1, 2018: European Journal of Preventive Cardiology
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