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Cardiac microvascular disease

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https://www.readbyqxmd.com/read/28936174/the-effect-of-velvet-antler-proteins-on-cardiac-microvascular-endothelial-cells-challenged-with-ischemia-hypoxia
#1
Xiang Xiao, Shuqiang Xu, Lin Li, Min Mao, Jinping Wang, Yanjun Li, Ziwei Wang, Fei Ye, Li Huang
Velvet antler (VA) is a precious traditional Chinese medicine that is capable of repeated regeneration. Based on the Chinese medicine theory of coordination the heart and kidneys, VA has been employed to treat heart diseases, including ischemic heart disease, heart failure, and arrhythmia. We examined the effects of VA proteins on primary cardiac microvascular endothelial cells (CMECs) that were subjected to ischemia-hypoxia (IH) to investigate their effects on and mechanism of action in the treatment of ischemic heart disease...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28917022/epidemiology-pathogenesis-and-management-of-takotsubo-syndrome
#2
REVIEW
Shams Y-Hassan, Per Tornvall
Takotsubo syndrome is a recently recognized acute cardiac disease entity with a clinical presentation resembling that of an acute coronary syndrome. The typical takotsubo syndrome patient has a unique circumferential left (bi-) ventricular contraction abnormality profile that extends beyond a coronary artery supply territory and appears to follow the anatomical cardiac sympathetic innervation. The syndrome predominantly affects postmenopausal women and is often preceded by emotional or physical stress. Patients with predisposing factors such as malignancy and other chronic comorbidities are more prone to suffer from takotsubo syndrome...
September 15, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28882731/danggui-buxue-decoction-promotes-angiogenesis-by-up-regulation-of-vegfr1-2-expressions-and-down-regulation-of-svegfr1-2-expression-in-myocardial-infarction-rat
#3
Guanying Hu, Peng Yang, Yu Zeng, Sanyin Zhang, Jiage Song
BACKGROUND: The traditional herbal compound Danggui Buxue decoction (DBD), has long been used for the prevention and treatment of cardiovascular diseases, however, the underlying molecular mechanism for its effect remains still unknown. So this study would to investigate the effect of DBD on cardiac damage induced by myocardial infarction (MI) challenge. METHODS: SD Rats with ligation of left anterior descending (LAD) coronary artery were randomly divided into MI, MI plus Betaloc Zok, MI plus DBD high dose, and MI plus DBD low dose group, together with sham-operated group...
September 4, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28857927/arrhythmogenic-right-ventricular-cardiomyopathy-and-cardiac-microvascular-disease-a-rare-association-or-a-possible-link
#4
Giovanni B Forleo, Francesco Summaria, Domenico G Della Rocca, Chiara Lanzillo, Fabio Ticconi, Domenico Sergi, Luca Santini, Francesco Romeo
No abstract text is available yet for this article.
October 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28842629/bone-marrow-derived-cells-and-their-conditioned-medium-induce-microvascular-repair-in-uremic-rats-by-stimulation-of-endogenous-repair-mechanisms
#5
Lina Golle, Hans U Gerth, Katrin Beul, Barbara Heitplatz, Peter Barth, Manfred Fobker, Hermann Pavenstädt, Giovana S Di Marco, Marcus Brand
The reduced number of circulating stem/progenitor cells that is found in chronic kidney disease (CKD) patients may contribute to impaired angiogenic repair and decreased capillary density in the heart. Cell therapy with bone marrow-derived cells (BMDCs) has been shown to induce positive effects on the microvasculature and cardiac function, most likely due to secretion of growth factors and cytokines, all of which are present in the conditioned medium (CM); however, this is controversial. Here we showed that treatment with BMDC or CM restored vascular density and decreased the extent of fibrosis in a rat model of CKD, the 5/6 nephrectomy...
August 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28829810/extracellular-overhydration-linked-with-endothelial-dysfunction-in-the-context-of-inflammation-in-haemodialysis-dependent-chronic-kidney-disease
#6
Nicos Mitsides, Tom Cornelis, Natascha J H Broers, Nanda M P Diederen, Paul Brenchley, Frank M van der Sande, Casper G Schalkwijk, Jeroen P Kooman, Sandip Mitra
BACKGROUND: Haemodialysis (HD) patients are predisposed to dysregulated fluid balance leading to extracellular water (ECW) expansion. Fluid overload has been closely linked with outcome in these patients. This has mainly been attributed to cardiac volume overload, but the relation between abnormalities in fluid status with micro- and macrovascular dysfunction has not been studied in detail. We studied the interaction of macro- and microvascular factors in states of normal and over- hydration in HD-dependent CKD...
2017: PloS One
https://www.readbyqxmd.com/read/28817814/cardiac-computed-tomography-angiographic-findings-as-predictors-of-late-heart-failure-in-an-asymptomatic-diabetic-cohort-an-8-year-prospective-follow-up-study
#7
David A Halon, Jubran Ayman, Ronen Rubinshtein, Barak Zafrir, Mali Azencot, Basil S Lewis
OBJECTIVES: Predictive models for heart failure (HF) in heterogeneous populations have had limited success. We examined cardiac computed tomography angiography (CTA) predictors of HF or cardiovascular death (HF-CVD) in a prospective study of asymptomatic diabetics undergoing baseline assessment by CTA. METHODS: The subjects (n = 735, aged 55-74 years, 51.2% women) had no clinical history of cardiovascular disease at study entry. Coronary artery calcium (CAC) score, CTA-defined coronary atherosclerosis, cardiac chamber volumes, and clinical data were collected and late outcome events recorded over 8...
August 18, 2017: Cardiology
https://www.readbyqxmd.com/read/28811357/autophagy-attenuates-endothelial-to-mesenchymal-transition-by-promoting-snail-degradation-in-human-cardiac-microvascular-endothelial-cells
#8
Jin Zou, Yanhua Liu, Bingong Li, Zeqi Zheng, Xuan Ke, Yanqin Hao, Xuelian Li, Xingxing Li, Fuyou Liu, Zhiyong Zhang
Endothelial-to-mesenchymal transition (EndMT) mainly exists in cardiovascular development and disease progression, and is well known to contribute to cardiac fibrosis. Recent studies indicated that autophagy also participates in the regulation of cardiac fibrosis. However, the precise role of autophagy in cardiac fibrosis and the underlying molecular mechanism remain unclear. The present study aimed to explore the role of autophagy in EndMT, reveal the underlying molecular mechanism, and seek new therapy for cardiac fibrosis...
October 31, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28768311/temporal-relation-between-myocardial-fibrosis-and-heart-failure-with-preserved-ejection-fraction-association-with-baseline-disease-severity-and-subsequent-outcome
#9
Erik B Schelbert, Yaron Fridman, Timothy C Wong, Hussein Abu Daya, Kayla M Piehler, Ajay Kadakkal, Christopher A Miller, Martin Ugander, Maren Maanja, Peter Kellman, Dipan J Shah, Kaleab Z Abebe, Marc A Simon, Giovanni Quarta, Michele Senni, Javed Butler, Javier Diez, Margaret M Redfield, Mihai Gheorghiade
Importance: Among myriad changes occurring during the evolution of heart failure with preserved ejection fraction (HFpEF), cardiomyocyte-extracellular matrix interactions from excess collagen may affect microvascular, mechanical, and electrical function. Objective: To investigate whether myocardial fibrosis (MF) is similarly prevalent both in those with HFpEF and those at risk for HFpEF, similarly associating with disease severity and outcomes. Design, Setting, and Participants: Observational cohort study from June 1, 2010, to September 17, 2015, with follow-up until December 14, 2015, at a cardiovascular magnetic resonance (CMR) center serving an integrated health system...
September 1, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28765558/cardiac-spheroids-as-promising-in-vitro-models-to-study-the-human-heart-microenvironment
#10
Liudmila Polonchuk, Mamta Chabria, Laura Badi, Jean-Christophe Hoflack, Gemma Figtree, Michael J Davies, Carmine Gentile
Three-dimensional in vitro cell systems are a promising alternative to animals to study cardiac biology and disease. We have generated three-dimensional in vitro models of the human heart ("cardiac spheroids", CSs) by co-culturing human primary or iPSC-derived cardiomyocytes, endothelial cells and fibroblasts at ratios approximating those present in vivo. The cellular organisation, extracellular matrix and microvascular network mimic human heart tissue. These spheroids have been employed to investigate the dose-limiting cardiotoxicity of the common anti-cancer drug doxorubicin...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28761673/evaluation-of-intermediate-coronary-stenoses-in-acute-coronary-syndromes-using-pressure-guidewire
#11
REVIEW
Giampaolo Niccoli, Ciro Indolfi, Justin E Davies
Fractional flow reserve (FFR) is increasingly used to guide myocardial revascularisation. However, supporting evidence regarding its use originates from studies that have enrolled mainly patients with stable angina, while patients with acute coronary syndromes (ACS) have not been included. Notably, multifactorial microvascular dysfunction and an increased sympathetic tone in patients with ACS may lead to blunted response to adenosine and false-negative results of FFR due to submaximal hyperaemia. This may raise the possibility of deferring treatment of stenosis that instead would have needed dilatation, thus leaving a residual risk of preventable cardiac events...
2017: Open Heart
https://www.readbyqxmd.com/read/28755990/nf-%C3%AE%C2%BAb-mediated-mir-130a-modulation-in-lung-microvascular-cell-remodeling-implication-in-pulmonary-hypertension
#12
Li Li, Il-Kwon Kim, Valorie Chiasson, Piyali Chatterjee, Sudhiranjan Gupta
Pulmonary arterial hypertension (PAH) is a progressive pulmonary vascular disease which is associated with pulmonary arterial endothelial cells (PAEC) dysfunction and pulmonary arterial smooth muscle cells proliferation. Moreover, inflammation is contributing a critical role in EC dysfunction and remains elusive. Nuclear factor-kappa B (NF-κB) is a master transcriptional regulator in various cardiovascular pathologies; but, NF-κB's role in EC dysfunction in unknown. Our previous study using cardiac and lung specific IκBα mutant mice (3M and IKBM) showed that PAH induced right ventricular hypertrophy (RVH) was prevented in monocrotaline (MCT) treated 3M and IKBM mice, compared to the wild-type mice...
July 26, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28746811/the-acute-effects-of-different-spironolactone-doses-on-cardiac-function-in-streptozotocin-induced-diabetic-rats
#13
Aleksandra Vranic, Stefan Simovic, Petar Ristic, Tamara R Nikolic, Isidora Stojic, Ivan M Srejovic, Vladimir I Zivkovic, Vladimir Jakovljevic, Dusan Djuric
Currently, cardiovascular diseases are leading cause of global mortality, while diabetes mellitus remains an important cause of cardiovascular morbidity. Findings suggest that obesity and diabetes mellitus are closely interconnected with high aldosterone levels, while mineralocorticoid receptors antagonist therapy has shown positive effects on cardiovascular complications associated with diabetes mellitus. A recent study showed that patients with diabetes mellitus treated with mineralocorticoid receptors antagonist have improved coronary microvascular function, leading to improved diastolic dysfunction...
July 26, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28733364/magnetic-resonance-imaging-of-myocardial-strain-after-acute-st-segment-elevation-myocardial-infarction-a-systematic-review
#14
REVIEW
Kenneth Mangion, Christie McComb, Daniel A Auger, Frederick H Epstein, Colin Berry
The purpose of this systematic review is to provide a clinically relevant, disease-based perspective on myocardial strain imaging in patients with acute myocardial infarction or stable ischemic heart disease. Cardiac magnetic resonance imaging uniquely integrates myocardial function with pathology. Therefore, this review focuses on strain imaging with cardiac magnetic resonance. We have specifically considered the relationships between left ventricular (LV) strain, infarct pathologies, and their associations with prognosis...
August 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28716007/silent-myocarditis-in-systemic-sclerosis-detected-by-cardiovascular-magnetic-resonance-using-lake-louise-criteria
#15
Sophie Mavrogeni, Loukia Koutsogeorgopoulou, Georgia Karabela, Efthymios Stavropoulos, Gikas Katsifis, John Raftakis, Sotiris Plastiras, Michel Noutsias, George Markousis-Mavrogenis, Genovefa Kolovou
BACKGROUND: Systemic sclerosis (SSc) is an autoimmune disease characterized by microvascular abnormalities, inflammation and fibrosis. We hypothesized that myocarditis may be diagnosed in asymptomatic SSc, undergoing routine cardio-vascular magnetic resonance (CMR) for fibrosis assessment, using the Lake Louise criteria: T2 ratio, early (EGE) and late gadolinium enhanced (LGE) images. METHODS: Eighty-two asymptomatic SSc, diagnosed according to American College of Rheumatology criteria, aged 43 ± 5 yrs...
July 17, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28699071/microvascular-dysfunction-in-infiltrative-cardiomyopathies
#16
Ornella Rimoldi, Francesco Maranta
Infiltrative heart diseases are characterized by myocardial tissue alterations leading to mechanical dysfunction which in turn develops into bi-ventricular congestive heart failure. Also the coronary microvasculature undergoes significant remodeling and dysfunction. The effects of the unbalance of the mechanical cross-talk between cardiac muscle and vessels and of the impairment of vasodilatory function can be measured non-invasively by means of positron emission tomography and cardiac magnetic resonance.
July 11, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28695406/quantification-of-intramyocardial-blood-volume-with-99m-tc-rbc-spect-ct-imaging-a-preclinical-study
#17
Hassan Mohy-Ud-Din, Nabil E Boutagy, John C Stendahl, Zhen W Zhuang, Albert J Sinusas, Chi Liu
BACKGROUND: Currently, there is no established non-invasive imaging approach to directly evaluate myocardial microcirculatory function in order to diagnose microvascular disease independent of co-existing epicardial disease. In this work, we developed a methodological framework for quantification of intramyocardial blood volume (IMBV) as a novel index of microcirculatory function with SPECT/CT imaging of (99m)Tc-labeled red blood cells (RBCs). METHODS: Dual-gated myocardial SPECT/CT equilibrium imaging of (99m)Tc-RBCs was performed on twelve canines under resting conditions...
July 10, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28695336/experimentally-induced-intrauterine-growth-restriction-in-rabbits-leads-to-differential-remodelling-of-left-versus-right-ventricular-myocardial-microstructure
#18
Julia Schipke, Anna Gonzalez-Tendero, Lidia Cornejo, Alper Willführ, Bart Bijnens, Fatima Crispi, Christian Mühlfeld, Eduard Gratacós
Intrauterine growth restriction (IUGR) is associated with foetal cardiac remodelling and dysfunction together with increased risk of cardiovascular disease in adulthood. Experimental data concerning effects of IUGR on cardiomyocyte and microvascularization anatomy are inconsistent and it is unknown whether both ventricles are similarly susceptible to in utero undersupply. Foetal IUGR was induced in pregnant rabbits at 25 days of gestation by selective ligation of uteroplacental vessels. Foetal echocardiography showed systolic and diastolic dysfunction of both ventricles and body and heart weight were significantly reduced in response to IUGR...
July 10, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28685679/clinical-approach-to-diabetic-cardiomiopathy-a-review-of-human-studies
#19
Roberto Tarquini, Laura Pala, Simona Brancati, Giulia Vannini, Salvatore De Cosmo, Gianluigi Mazzoccoli, Carlo Maria Rotella
BACKGROUND: Diabetic Cardiomiopathy (DC) has been defined as a distinct entity characterized by the presence of diastolic or systolic cardiac dysfunction in a diabetic patient in the absence of other causes for Cardiomiopathy, such as coronary artery disease (CAD), hypertension (HTN), or valvular heart disease. Diabetes affects every organ in the body and cardiovascular disease accounts for two-thirds of the mortality in the diabetic population. Diabetes-related heart disease occurs in the form of coronary artery disease (CAD), cardiac autonomic neuropathy or DC...
July 5, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28675064/differential-expression-of-circulating-vascular-cell-adhesion-molecule-1-in-subjects-with-coronary-artery-disease-and-cardiac-syndrome-x-without-known-diabetes-mellitus
#20
Kae-Woei Liang, Wayne H-H Sheu, Wen-Jane Lee, Wen-Lieng Lee, Chia-Po Fu, Jun-Sing Wang
CONTEXT: Inflammation is one of the mechanisms underlying cardiac syndrome X (CSX). OBJECTIVES: Few studies have compared the expression of inflammatory or adhesion molecules between coronary artery disease (CAD) vs. CSX. MATERIALS AND METHODS: Ninety-two CSX and 145 CAD subjects without known diabetes mellitus underwent coronary angiogram for angina. RESULTS: Vascular cell adhesion molecule (VCAM)-1 (median, 507 vs...
July 4, 2017: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
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