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Cardiac remodelling

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https://www.readbyqxmd.com/read/29342012/diffuse-chorioretinopathy-without-serous-detachment-associated-with-cardiac-transplantation
#1
Michael F Marmor
PURPOSE: To analyze an unusual case of widespread chorioretinopathy after cardiac transplantation for its potential etiology and clinical significance. METHODS: Clinical examinations included widefield and macular color and fundus autofluorescence photography, spectral domain optical coherence tomography, fluorescein angiography and indocyanine green angiography, full-field electroretinography, and Goldmann visual fields. PATIENT: A 44-year-old Hispanic woman was referred to rule out retinitis pigmentosa...
January 16, 2018: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/29341932/synthetic-extracellular-matrix-mimic-hydrogel-improves-efficacy-of-mesenchymal-stromal-cell-therapy-for-ischemic-cardiomyopathy
#2
Maria Chiara Ciuffreda, Giuseppe Malpasso, Cindy Chokoza, Deon Bezuidenhout, Kyle P Goetsch, Manuela Mura, Federica Pisano, Neil H Davies, Massimiliano Gnecchi
BACKGROUND: Mesenchymal stromal cells (MSC) repair infarcted hearts mainly through paracrine mechanisms. Low cell engraftment limits the release of soluble paracrine factors (SF) over time and, consequently, MSC efficacy. We tested whether a synthetic extracellular matrix mimic, a hydrogel containing heparin (H-HG), could ameliorate MSC engraftment and binding/release of SF, thus improving MSC therapy efficacy. METHODS AND RESULTS: In vitro, rat bone-marrow MSC (rBM-MSC) were seeded and grown into H-HG...
January 13, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29338775/comparison-of-speckle-tracking-echocardiography-with-invasive-hemodynamics-for-the-detection-of-characteristic-cardiac-dysfunction-in-type-1-and-type-2-diabetic-rat-models
#3
Csaba Mátyás, Attila Kovács, Balázs Tamás Németh, Attila Oláh, Szilveszter Braun, Márton Tokodi, Bálint András Barta, Kálmán Benke, Mihály Ruppert, Bálint Károly Lakatos, Béla Merkely, Tamás Radovits
BACKGROUND: Measurement of systolic and diastolic function in animal models is challenging by conventional non-invasive methods. Therefore, we aimed at comparing speckle-tracking echocardiography (STE)-derived parameters to the indices of left ventricular (LV) pressure-volume (PV) analysis to detect cardiac dysfunction in rat models of type-1 (T1DM) and type-2 (T2DM) diabetes mellitus. METHODS: Rat models of T1DM (induced by 60 mg/kg streptozotocin, n = 8) and T2DM (32-week-old Zucker Diabetic Fatty rats, n = 7) and corresponding control animals (n = 5 and n = 8, respectively) were compared...
January 16, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29337094/vitamin-d-attenuates-pressure-overload-induced-cardiac-remodeling-and-dysfunction-in-mice
#4
Liang Zhang, Xiao Yan, Jie Bai, Tesfaldet Habtemariam Hidru, Qing-Shan Wang, Hui-Hua Li
Vitamin D (VD) and its analogues play critical roles in metabolic and cardiovascular diseases. Recent studies have demonstrated that VD exerts a protective role in cardiovascular diseases. However, the beneficial effect of VD on pressure overload-induced cardiac remodeling and dysfunction and its underlying mechanisms are not fully elucidated. In this study, cardiac dysfunction and hypertrophic remodeling in mice were induced by pressure overload. Cardiac function was evaluated by echocardiography, and myocardial histology was detected by H&E and Masson's trichrome staining...
January 11, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29337052/sweet-yet-underappreciated-proteoglycans-and-extracellular-matrix-remodeling-in-heart-disease
#5
REVIEW
Geir Christensen, Kate M Herum, Ida G Lunde
Extracellular matrix remodeling is extensive in several heart diseases and hampers cardiac filling, often leading to heart failure. Proteoglycans have over the last two decades emerged as molecules with important roles in matrix remodeling and fibrosis in the heart. Here we discuss and review current literature on proteoglycans that have been studied in cardiac remodeling. The small leucine rich proteoglycans (SLRPs) are located within the extracellular matrix and are organizers of the matrix structure. Membrane-bound proteoglycans, such as syndecans and glypicans, act as receptors and direct cardiac fibroblast signaling...
January 11, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29336370/differences-of-matrix-metalloproteinase-2-expression-between-left-and-right-ventricles-in-response-to-nandrolone-decanoate-and-or-swimming-training-in-mice
#6
Ying Bai, Xu-Bo Shi, Yu-Qiong Zhang, Yue-Li Wang, Xin-Yao Liu, María Asunción Esteve-Pastor
BACKGROUND: Matrix metalloproteinase (MMP)-2 plays an important role in the remodeling of left ventricles (LVs) and right ventricles (RVs). We investigated the differences of MMP-2 expression between LV and RV in response to nandrolone decanoate (ND), swimming training (ST), and combined ND and ST (NS) in mice, based on their structural, functional, and biochemical characteristics. METHODS: Totally 28 male C57B1 mice (6 weeks old; 20-23 g) were divided into four groups, including the control (n = 7), ND (n = 6), ST (n = 8), and NS (n = 7) groups...
January 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29334670/genetic-ablation-of-trpv1-exacerbates-pressure-overload-induced-cardiac-hypertrophy
#7
Beihua Zhong, Jack Rubinstein, Shuangtao Ma, Donna H Wang
Transient receptor potential vanilloid 1 (TRPV1) channels expressed in sensory nerves may regulate vascular tone and cardiovascular function via their anti-inflammatory effects by releasing neuropeptide calcitonin gene-related peptide (CGRP). Inflammation plays a role in the progression of cardiac hypertrophy and TRPV1 activation may be key to cardiac inflammatory processes. The aim of this study was to test the hypothesis that TRPV1 modulates inflammatory processes to protect the heart from pressure overload-induced hypertrophy and inflammatory responses...
January 12, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29332590/the-potential-role-of-oxidative-stress-in-cardiac-hypertrophy-a-narrative-review
#8
Abeer Rababa H, Ashley Guillory, Rima Mustafa, Tamara Hijjawi
BACKGROUND: A common phenotype associated with heart failure is the development of cardiac hypertrophy. Cardiac hypertrophy occurs in response to stress, such as hypertension, coronary vascular disease, or myocardial infarction. The most critical pathophysiological conditions involved may include dilated hypertrophy, fibrosis and contractile malfunction. The intricate pathophysiological mechanisms of cardiac hypertrophy have been the core of several scientific studies, which may help in opening a new avenue in preventive and curative procedures...
January 11, 2018: Current Cardiology Reviews
https://www.readbyqxmd.com/read/29332571/role-of-heart-rate-reduction-in-the-management-of-myocarditis
#9
Chen Guang-Yi, Ge Li-Sha, Li Yue-Chun
The morbidity of myocarditis demonstrates an upward tendency by years, is commonly defined as the inflammation of myocytes and is caused by multiple factors. With the development of the molecular biological technique, great breakthroughs in the diagnosis and understanding of pathophysiological mechanisms of myocarditis have recently been achieved. Several questions remain unresolved, however, including standard treatment approaches to myocarditis, which remain controversial and ambiguous. Heart rate, as an independent risk factor, has been shown to be related to cardiac disease...
January 10, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29331057/manifestations-and-mechanisms-of-myocardial-lipotoxicity-in-obesity
#10
Arthur C Sletten, Linda R Peterson, Jean E Schaffer
Environmental and socioeconomic changes over the past thirty years have contributed to a dramatic rise in the worldwide prevalence of obesity. Heart disease is among the most serious health risks of obesity, with increases in both atherosclerotic coronary heart disease and heart failure among obese individuals. In this review, we focus on primary myocardial alterations in obesity that include hypertrophic remodeling and diastolic dysfunction. Obesity-associated perturbations in myocardial and systemic lipid metabolism are important contributors to cardiovascular complications of obesity...
January 13, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29330215/mir-195-regulates-metabolism-in-failing-myocardium-via-alterations-in-sirt3-expression-and-mitochondrial-protein-acetylation
#11
Xiaokan Zhang, Ruiping Ji, Xianghai Liao, Estibaliz Castillero, Peter J Kennel, Danielle L Brunjes, Marcus Franz, Sven Möbius-Winkler, Konstantinos Drosatos, Isaac George, Emily I Chen, Paolo C Colombo, P Christian Schulze
Background -Heart failure (HF) leads to mitochondrial dysfunction and metabolic abnormalities of the failing myocardium coupled with an energy-depleted state and cardiac remodeling. The mitochondrial deacetylase sirtuin 3 (SIRT3) plays a pivotal role in the maintenance of mitochondrial function through regulating the mitochondrial acetylome. Interestingly, unique cardiac and systemic miRNAs have been shown to play an important role in cardiac remodeling by modulating key signaling elements in the myocardium...
January 12, 2018: Circulation
https://www.readbyqxmd.com/read/29328372/differential-microrna-expression-profiles-and-bioinformatics-analysis-between-young-and-aging-spontaneously-hypertensive-rats
#12
Jingfeng Wang, Jingjing Zhang, Xuefeng Ding, Yanyan Wang, Zhiming Li, Weipeng Zhao, Jianguo Jia, Jingmin Zhou, Junbo Ge
MicroRNAs (miRNAs/miRs) serve a role as important regulators in cardiac hypertrophy. The present study aimed to reveal the differential expression profile of miRNAs between young and aging spontaneously hypertensive rats (SHRs) and studied the functional annotation of predicted targets. Briefly, 3‑month‑old and 12‑month‑old SHRs (n=3/group) were subjected to echocardiography, histopathological analysis and dihydroethidium staining. Subsequently, small RNA sequencing and data processing was conducted to identify the differentially expressed miRNAs between these two groups...
January 9, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29325227/soluble-st2-in-end-stage-heart-failure-before-and-after-support-with-a-left-ventricular-assist-device
#13
C C S Tseng, M M H Huibers, L H Gaykema, E Siera-de Koning, F Z Ramjankhan, A S Maisel, N de Jonge
BACKGROUND: The interleukin-33 (IL-33)/supressor of tumorigenicity 2 (ST2) pathway is suggested to play an important role in fibrosis, remodeling and the progression of heart failure (HF). Increased soluble (sST2) levels are associated with adverse outcome in the average HF population. Less is known about sST2 levels in end-stage HF. Therefore, we studied sST2 levels in end-stage HF and the effect of unloading by left ventricular assist device (LVAD) support on sST2 levels. METHOD AND RESULTS: Serial plasma measurements of sST2 were performed pre-implantation and 1, 3 and 6 months after (LVAD) implantation in 38 patients...
January 11, 2018: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29324314/down-regulation-of-mir-133a-b-in-patients-with-myocardial-infarction-correlates-with-the-presence-of-ventricular-fibrillation
#14
Emanuela Boštjančič, Tanisa Brandner, Nina Zidar, Damjan Glavač, Dušan Štajer
MicroRNAs (miRNAs) are important regulators of physiologic and pathologic conditions of the heart. Animal models of heart diseases have shown that miRNAs may contribute to the development of arrhythmias. However, little is known about the expression of muscle- and cardiac-specific miRNAs in patients with myocardial infarction (MI) who have developed ventricular fibrillation (VF). Our study included 47 patients who had died from myocardial infarction (MI), 23 with clinically proven VF and 24 without VF. Autopsy samples of infarcted tissue and remote myocardium were available (n = 94)...
January 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29324309/the-promising-future-of-ventricular-restraint-therapy-for-the-management-of-end-stage-heart-failure
#15
REVIEW
Muhammad Naveed, Imran Shair Mohammad, Li Xue, Sara Khan, Wang Gang, Yanfang Cao, Yijie Cheng, Xingxing Cui, Chen DingDing, Yu Feng, Wang Zhijie, Zhou Xiaohui
Complicated pathophysiological syndrome associated with irregular functioning of the heart leading to insufficient blood supply to the organs is linked to congestive heart failure (CHF) which is the leading cause of death in developed countries. Numerous factors can add to heart failure (HF) pathogenesis, including myocardial infarction (MI), genetic factors, coronary artery disease (CAD), ischemia or hypertension. Presently, most of the therapies against CHF cause modest symptom relief but incapable of giving significant recovery for long-term survival outcomes...
January 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29324263/the-role-of-pro-fibrotic-biomarkers-in-paroxysmal-and-persistent-atrial-fibrillation
#16
Adina Elena Stanciu, Radu Gabriel Vatasescu, Marcel Marian Stanciu, Nafija Serdarevic, Maria Dorobantu
PURPOSE: Signaling pathways involved in electrical, structural and contractile remodeling processes behind development and progression of atrial fibrillation (AF) have not been completely elucidated, but it seems to be related to complex interactions among neurohormonal and cellular mediators. We aimed to investigate interleukin-6 (IL-6), transforming growth factor-beta1 (TGF-β1), matrix metalloproteinase-9 (MMP-9), tissue inhibitor of metalloproteinase-1 (TIMP-1), as biomarkers of atrial remodeling, in patients with paroxysmal and persistent AF, and their correlation with N-terminal prohormone of brain natriuretic peptide (NT-proBNP) and left atrial (LA) diameter...
January 8, 2018: Cytokine
https://www.readbyqxmd.com/read/29324260/plasma-leptin-but-not-resistin-tnf-%C3%AE-and-adiponectin-is-associated-with-echocardiographic-parameters-of-cardiac-remodeling-in-patients-with-coronary-artery-disease
#17
Anca Daniela Farcaş, Adriana Rusu, Mirela Anca Stoia, Luminiţa Animarie Vida-Simiti
The aim of this research was to assess the relationship between plasma adiponectin, leptin, resistin, tumor necrosis factor alpha (TNF-α) levels and echocardiographic parameters of ventricular remodeling in patients with coronary artery disease, without acute myocardial infarction. The study population consisted of 49 patients with echocardiographic measurements performed. After adjustment for age, gender, body mass index, systolic and diastolic blood pressure, and glycaemia, adiponectin was statistically significant associated with interventricular septum thickness (β = -0...
January 8, 2018: Cytokine
https://www.readbyqxmd.com/read/29320567/myocardium-of-patients-with-dilated-cardiomyopathy-presents-altered-expression-of-genes-involved-in-thyroid-hormone-biosynthesis
#18
Carolina Gil-Cayuela, Ana Ortega, Estefanía Tarazón, Luis Martínez-Dolz, Juan Cinca, José Ramón González-Juanatey, Francisca Lago, Esther Roselló-Lletí, Miguel Rivera, Manuel Portolés
BACKGROUND: The association between dilated cardiomyopathy (DCM) and low thyroid hormone (TH) levels has been previously described. In these patients abnormal thyroid function is significantly related to impaired left ventricular (LV) function and increased risk of death. Although TH was originally thought to be produced exclusively by the thyroid gland, we recently reported TH biosynthesis in the human ischemic heart. OBJECTIVES: Based on these findings, we evaluated whether the genes required for TH production are also altered in patients with DCM...
2018: PloS One
https://www.readbyqxmd.com/read/29318851/-effect-of-combined-intervention-of-electroacupuncture-and-astragaloside-iv-on-myocardial-hypertrophy-and-tgf-%C3%AE-1-smad-signaling-in-rats-with-myocardial-fibrosis
#19
Jia-Shen Li, Xiao-Yu Zhu, Mei-Li Lu, Jun-Hong Gao, Hong-Xin Wang, Xiao-Chun Yu
OBJECTIVE: To observe the effect of combined intervention of electroacupuncture (EA) and astragaloside IV(ASIV) on cardiac hypertrophy and transforming growth factor β 1 (TGF-β 1)/Smad signaling in isoproterenol (ISO) induced cardiac hypertrophy rats, so as to investigate its underlying mechanisms in improving myocardial fibrosis. METHODS: A total of 50 SD rats were randomly divided into 5 groups: normal control, model (ISO), Propranolol (PRO),ASIV and EA+ASIV groups (n=10 in each group)...
December 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29317621/integrated-omics-dissection-of-proteome-dynamics-during-cardiac-remodeling
#20
Edward Lau, Quan Cao, Maggie P Y Lam, Jie Wang, Dominic C M Ng, Brian J Bleakley, Jessica M Lee, David A Liem, Ding Wang, Henning Hermjakob, Peipei Ping
Transcript abundance and protein abundance show modest correlation in many biological models, but how this impacts disease signature discovery in omics experiments is rarely explored. Here we report an integrated omics approach, incorporating measurements of transcript abundance, protein abundance, and protein turnover to map the landscape of proteome remodeling in a mouse model of pathological cardiac hypertrophy. Analyzing the hypertrophy signatures that are reproducibly discovered from each omics data type across six genetic strains of mice, we find that the integration of transcript abundance, protein abundance, and protein turnover data leads to 75% gain in discovered disease gene candidates...
January 9, 2018: Nature Communications
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