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Cardiac microvascular disease

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https://www.readbyqxmd.com/read/28733364/magnetic-resonance-imaging-of-myocardial-strain-after-acute-st-segment-elevation-myocardial-infarction-a-systematic-review
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
https://www.readbyqxmd.com/read/28668140/clinical-features-diagnosis-and-management-of-patients-with-anderson-fabry-cardiomyopathy
#8
REVIEW
Haran Yogasundaram, Daniel Kim, Omar Oudit, Richard B Thompson, Frank Weidemann, Gavin Y Oudit
Anderson-Fabry disease (AFD) is an X-linked recessive, multisystem disease of lysosomal storage. A mutation in the gene encoding the hydrolase enzyme α-galactosidase A results in its deficiency, or complete absence of activity. Subsequent progressive intracellular accumulation of glycosphingolipids, predominantly globotriaosylceramide, in various tissues, results in progressive organ dysfunction and failure, most commonly affecting the kidneys, nervous system, skin, eyes, vascular endothelium, and the heart...
July 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28663358/necrotising-coronaritis-with-fatal-outcome
#9
Lisa Schweizer, Nadja Fischer, Thomas Fehr, Stephan Schneiter
A 56-year-old woman presented with acute onset of typical chest pain. She was diagnosed with acute coronary syndrome with ST-segment elevation myocardial infarction. Although significant obstructive coronary artery disease was ruled out by coronary angiography, cardiac MRI showed transmural necrosis of the lateral free wall with extensive microvascular obstruction consistent with ischaemic heart disease. Within 48 hours after initial presentation, the patient suddenly arrested due to pulseless electrical activity with futile resuscitation efforts...
June 28, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28637886/cardiovascular-disease-and-type-2-diabetes-has-the-dawn-of-a-new-era-arrived
#10
Muhammad Abdul-Ghani, Ralph A DeFronzo, Stefano Del Prato, Robert Chilton, Rajvir Singh, Robert E J Ryder
Hyperglycemia is the major risk factor for microvascular complications in patients with type 2 diabetes (T2D). However, cardiovascular disease (CVD) is the principal cause of death, and lowering HbA1c has only a modest effect on reducing CVD risk and mortality. The recently published LEADER and SUSTAIN-6 trials demonstrate that, in T2D patients with high CVD risk, the glucagon-like peptide 1 receptor agonists liraglutide and semaglutide reduce the primary major adverse cardiac events (MACE) end point (cardiovascular death, nonfatal myocardial infarction, nonfatal stroke) by 13% and 24%, respectively...
July 2017: Diabetes Care
https://www.readbyqxmd.com/read/28630913/an-innovative-biologic-system-for-photon-powered-myocardium-in-the-ischemic-heart
#11
Jeffrey E Cohen, Andrew B Goldstone, Michael J Paulsen, Yasuhiro Shudo, Amanda N Steele, Bryan B Edwards, Jay B Patel, John W MacArthur, Michael S Hopkins, Casey E Burnett, Kevin J Jaatinen, Akshara D Thakore, Justin M Farry, Vi N Truong, Alexandra T Bourdillon, Lyndsay M Stapleton, Anahita Eskandari, Alexander S Fairman, William Hiesinger, Tatiana V Esipova, William L Patrick, Keven Ji, Judith A Shizuru, Y Joseph Woo
Coronary artery disease is one of the most common causes of death and disability, afflicting more than 15 million Americans. Although pharmacological advances and revascularization techniques have decreased mortality, many survivors will eventually succumb to heart failure secondary to the residual microvascular perfusion deficit that remains after revascularization. We present a novel system that rescues the myocardium from acute ischemia, using photosynthesis through intramyocardial delivery of the cyanobacterium Synechococcus elongatus...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28616394/new-method-of-sudomotor-function-measurement-to-detect-microvascular-disease-and-sweat-gland-nerve-or-unmyelinated-c-fiber-dysfunction-in-adults-with-retinopathy
#12
John E Lewis, Steven E Atlas, Ammar Rasul, Ashar Farooqi, Laura Lantigua, Oscar L Higuera, Andrea Fiallo, Lianette Laria, Renata Picciani, Ken Wals, Zohar Yehoshua, Armando Mendez, Janet Konefal, Sharon Goldberg, Judi Woolger
BACKGROUND: Diabetes-associated microvascular complications such as retinopathy and neuropathy often lead to end-organ and tissue damage. Impaired skin microcirculation often precedes the detection of other advanced diabetic complications. The ANS-1 system contains a redesigned sympathetic skin response (ANS-1 SSR) device that measures sudomotor function, a photoplethysmography sensor, and a blood pressure device to comprehensively assess cardiac autonomic neuropathy and endothelial dysfunction...
2017: Journal of Diabetes and Metabolic Disorders
https://www.readbyqxmd.com/read/28611075/identification-and-functional-characterization-of-hypoxia-induced-endoplasmic-reticulum-stress-regulating-lncrna-hyperlnc-in-pericytes
#13
Florian C Bischoff, Astrid Werner, David John, Jes-Niels Boeckel, Maria-Theodora Melissari, Phillip Grote, Simone F Glaser, Shemsi Demolli, Shizuka Uchida, Katharina M Michalik, Benjamin Meder, Hugo A Katus, Jan Haas, Wei Chen, Soni S Pullamsetti, Werner Seeger, Andreas M Zeiher, Stefanie Dimmeler, Christoph M Zehendner
Rationale: Pericytes are essential for vessel maturation and endothelial barrier function. Long non-coding RNAs (lncRNAs) regulate many cellular functions, but their role in pericyte biology remains unexplored. Objective: Here we investigate the effect of Hypoxia-Induced Endoplasmic Reticulum Stress Regulating lncRNA (HypERlnc, also known as ENSG00000262454) on pericyte function in vitro and its regulation in human heart failure and idiopathic pulmonary arterial hypertension. Methods and Results: RNA sequencing in human primary pericytes (hPCs) identified hypoxia regulated lncRNAs, including HypERlnc...
June 13, 2017: Circulation Research
https://www.readbyqxmd.com/read/28607546/histologic-sequelae-of-apical-hypertrophic-cardiomyopathy-dystrophic-calcification
#14
Shahryar G Saba, John N Makaryus, Navid Rahmani, Ram Jadonath
We present cardiac computed tomography (CT) findings demonstrating apical hypertrophic cardiomyopathy with dystrophic calcification of the left ventricular apex. The absence of significant epicardial coronary artery disease demonstrated by coronary CT angiography suggests that increased wall tension and decreased microvascular perfusion over time account for the dyskinetic apical myocardium, rather than myocardial infarction secondary to atherosclerotic plaque rupture. These observations support CT as the imaging modality of choice to visualize the deposition of calcium in injured myocardial tissue, a recognized occurrence in chronically infarcted myocardium...
2017: Clinical Medicine Insights. Cardiology
https://www.readbyqxmd.com/read/28605043/typical-angina-is-associated-with-greater-coronary-endothelial-dysfunction-but-not-abnormal-vasodilatory-reserve
#15
Ahmed AlBadri, Derek Leong, C Noel Bairey Merz, Janet Wei, Eileen M Handberg, Chrisandra L Shufelt, Puja K Mehta, Michael D Nelson, Louise E Thomson, Daniel S Berman, Leslee J Shaw, Galen Cook-Wiens, Carl J Pepine
BACKGROUND: Typical angina (TA) is defined as substernal chest pain precipitated by physical exertion or emotional stress and relieved with rest or nitroglycerin. Women and elderly patients are usually have atypical symptoms both at rest and during stress, often in the setting of nonobstructive coronary artery disease (CAD). HYPOTHESIS: To further understand this, we performed subgroup analysis comparing subjects who presented with TA vs nontypical angina (NTA) using baseline data of patients with nonobstructive CAD and coronary microvascular dysfunction (CMD) enrolled in a clinical trial...
June 12, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28604116/the-cognitive-decline-in-older-patients-with-end-stage-renal-disease-cope-study-rationale-and-design
#16
Noeleen Berkhout-Byrne, Marije H Kallenberg, André Gaasbeek, Ton J Rabelink, Sebastiaan Hammer, Mark A van Buchem, Matthias J van Osch, Lucia J M Kroft, Henk Boom, Simon P Mooijaart, Marjolijn van Buren
BACKGROUND: Older patients with end stage renal disease (ESRD) are at increased risk for cognitive decline, but detailed studies of the magnitude of cognitive decline on dialysis or comprehensive conservative management (CCM) are lacking and the underlying pathophysiological mechanisms have poorly been studied. OBJECTIVES: To describe the rationale and design of the COPE study. Study objectives are as follows. Firstly, to examine the severity of cognitive impairment in older patients reaching ESRD before dialysis and the rate of decline after dialysis or CCM initiation...
July 11, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28598888/long-term-diabetes-complications-after-pancreas-transplantation
#17
Trond Jenssen, Anders Hartmann, Kåre I Birkeland
PURPOSE OF REVIEW: The intention of this study is to summarize present knowledge about adverse effects of hyperglycemia in diabetes, and in this context review more recent data concerning the effects of pancreas transplantation on a wide range of diabetic complications. RECENT FINDINGS: Effective blood glucose control by insulin delays progression of microvascular complications and probably improves survival in type 1 diabetes. A successful pancreas transplantation combined with a kidney graft has recently been found to prevent diabetic kidney lesions, and registry data support improved long-term patient survival...
August 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28574936/coronary-microcirculatory-dysfunction-in-human-cardiomyopathies-a-pathologic-and-pathophysiologic-review
#18
Kristina Selthofer-Relatic, Martina Mihalj, Aleksandar Kibel, Ana Stupin, Marko Stupin, Ivana Jukic, Akos Koller, Ines Drenjancevic
Cardiomyopathies are a heterogeneous group of diseases of the myocardium. The term cardiomyopathy involves a wide range of pathogenic mechanisms that affect the structural and functional states of cardiomyocytes, extravascular tissues, and coronary vasculature, including both epicardial coronary arteries and the microcirculation. In the developed phase, cardiomyopathies present with various clinical symptoms: dyspnea, chest pain, palpitations, swelling of the extremities, arrhythmias, and sudden cardiac death...
July 2017: Cardiology in Review
https://www.readbyqxmd.com/read/28553592/study-of-neutrophil-lymphocyte-ratio-as-novel-marker-for-diabetic-nephropathy-in-type-2-diabetes
#19
Sagar Ashokrao Khandare, Sachin Chittawar, Nitin Nahar, T N Dubey, Zahraan Qureshi
INTRODUCTION: Diabetic nephropathy (DN) is a microvascular complication of diabetes. DN is clinically manifested as an increase in urine albumin excretion. Total white blood cell count is a crude but sensitive indicator of inflammation and studied in many cardiac and noncardiac diseases as an inflammatory marker such as acute myocardial infarction, stroke, and heart failure. In this study, the association of neutrophil-lymphocyte ratio (NLR) with DN is studied. PATIENTS AND METHODS: It is an observational cross-sectional study...
May 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28542516/evaluation-of-the-systemic-micro-and-macrovasculature-in-stable-angina-a-case-control-study
#20
Ulf Neisius, Erin Olson, Sabrina H Rossi, Hagar A Ibrahim, Gemma Currie, Anna F Dominiczak, Christian Delles
AIMS: The diagnosis of stable angina involves the use of probability estimates based on clinical presentation, age, gender and cardiovascular risk factors. In view of the link between the cardiac and systemic vasculature we tested whether non-invasive measures of systemic micro- and macrovascular structure and function differentiate between individuals with flow-limiting coronary artery disease (CAD) and those with normal coronary arteries (NCA). METHODS AND RESULTS: We recruited 84 patients undergoing elective coronary angiography for investigation of symptoms of stable angina...
2017: PloS One
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