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https://www.readbyqxmd.com/read/29046002/-optimal-diagnostics-and-therapy-for-microvascular-angina-pectoris
#1
Peter Ong, Udo Sechtem
Patients with microvascular angina are characterized by angina pectoris with proof of myocardial ischemia in the absence of any relevant epicardial stenosis and without myocardial disease (type 1 coronary microvascular dysfunction according to Crea and Camici). Structural and functional alterations of the coronary microvessels (diameter < 500 µm) are the reason for this phenomenon. Frequently such alterations are associated with cardiovascular risk factors. Patients with angina pectoris without epicardial stenoses represent for 10 - 50 % of all patients undergoing coronary angiography depending on the clinical presentation...
October 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29042790/evaluation-of-vitamin-d-levels-in-relation-to-coronary-ct-angiographic-findings-in-an-iranian-population
#2
Maryam Moradi, Ali Foroutanfar
BACKGROUND: Vitamin D deficiency, as a predisposing factor for coronary artery disease (CAD), is a subject of increasing interest. However, its role as a risk factor has not been proven. This study aimed to investigate the relationship between serum vitamin D levels and CAD. MATERIALS AND METHODS: Using a cross-sectional design, 180 patients who were candidates for coronary computed tomography angiography (CCTA) were selected. Serum levels of vitamin D were measured and compared with the results of CCTA (including calcium score, and presence and severity of coronary artery involvement due to atherosclerotic plaques)...
2017: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/29040496/changes-in-platelet-bax-levels-contribute-to-impaired-platelet-response-to-thrombin-after-cardiopulmonary-bypass-prospective-observational-clinical-and-laboratory-investigations
#3
M Murase, Y Nakayama, D I Sessler, N Mukai, S Ogawa, Y Nakajima
Background: Anucleate platelets can undergo apoptosis in response to various stimuli, as do nucleated cells. Cardiopulmonary bypass (CPB) causes platelet dysfunction and can also activate platelet apoptotic pathways. We therefore evaluated time-dependent changes in blood platelet Bax (a pro-apoptotic molecule) levels and platelet dysfunction after cardiac surgery. Methods: We assessed blood samples obtained from subjects having on-pump or off-pump coronary artery bypass graft surgery (n=20 each)...
October 10, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29039084/use-of-coronary-artery-calcium-scanning-as-a-triage-for-invasive-coronary-angiography
#4
EDITORIAL
Roberta Assante, Michele Klain, Wanda Acampa
No abstract text is available yet for this article.
October 16, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29035431/prognostic-application-of-thoracic-aortic-calcium-scoring-for-adverse-clinical-outcome-risk-in-elderly-patients-with-left-ventricular-hypertrophy
#5
In Jeong Cho, Hyuk Jae Chang, Sang Eun Lee, Chi Young Shim, Geu Ru Hong, Namsik Chung
BACKGROUND AND OBJECTIVES: Left ventricular hypertrophy (LVH) is associated with poor cardiovascular outcomes. Heavy aortic calcification exacerbates arterial stiffness, which consequently heightens left ventricular (LV) afterload. We assessed the usefulness of aortic calcification for predicting adverse cardiovascular outcomes and to determine whether the relationship, if any, differed as a function of LVH. METHODS: The analytic sample was comprised of a total of 487 individuals 65 years of age or older...
September 18, 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/29034066/novel-spect-technologies-and-approaches-in-cardiac-imaging
#6
Piotr Slomka, Guang-Uei Hung, Guido Germano, Daniel S Berman
Recent novel approaches in myocardial perfusion single photon emission CT (SPECT) have been facilitated by new dedicated high-efficiency hardware with solid-state detectors and optimized collimators. New protocols include very low-dose (1 mSv) stress-only, two-position imaging to mitigate attenuation artifacts, and simultaneous dual-isotope imaging. Attenuation correction can be performed by specialized low-dose systems or by previously obtained CT coronary calcium scans. Hybrid protocols using CT angiography have been proposed...
December 1, 2016: Cardiovasc Innov Appl
https://www.readbyqxmd.com/read/29033611/stable-ischemic-heart-disease-in-women-current-perspectives
#7
REVIEW
Fatima Samad, Anushree Agarwal, Zainab Samad
Cardiovascular disease is the leading cause of death in women accounting for 1 in every 4 female deaths. Pathophysiology of ischemic heart disease in women includes epicardial coronary artery, endothelial dysfunction, coronary vasospasm, plaque erosion and spontaneous coronary artery dissection. Angina is the most common presentation of stable ischemic heart disease (SIHD) in women. Risk factors for SIHD include traditional risks such as older age, obesity (body mass index [BMI] >25 kg/m(2)), smoking, hypertension, dyslipidemia, cerebrovascular and peripheral vascular disease, sedentary lifestyle, family history of premature coronary artery disease, metabolic syndrome and diabetes mellitus, and nontraditional risk factors, such as gestational diabetes, insulin resistance/polycystic ovarian disease, pregnancy-induced hypertension, pre-eclampsia, eclampsia, menopause, mental stress and autoimmune diseases...
2017: International Journal of Women's Health
https://www.readbyqxmd.com/read/29033237/coronary-artery-calcium-guided-prevention-the-time-is-now
#8
EDITORIAL
Todd C Villines
No abstract text is available yet for this article.
October 7, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29030345/runx1-deficiency-protects-against-adverse-cardiac-remodeling-following-myocardial-infarction
#9
Charlotte S McCarroll, Weihong He, Kirsty Foote, Ashley Bradley, Karen McGlynn, Francesca Vidler, Colin Nixon, Katrin Nather, Caroline Fattah, Alexandra H Riddell, Peter Bowman, Elspeth B Elliott, Margaret Bell, Catherine Hawksby, Scott M MacKenzie, Liam J Morrison, Anne Terry, Karen Blyth, Godfrey L Smith, Martin W McBride, Thomas Kubin, Thomas Braun, Stuart A Nicklin, Ewan R Cameron, Christopher M Loughrey
Background -Myocardial infarction (MI) is a leading cause of heart failure and death worldwide. Preservation of contractile function and protection against adverse changes in ventricular architecture (cardiac remodeling) are key factors to limiting progression of this condition to heart failure. Consequently, new therapeutic targets are urgently required to achieve this aim. Expression of the Runx1 transcription factor is increased in adult cardiomyocytes following MI; however, the functional role of Runx1 in the heart is unknown...
October 13, 2017: Circulation
https://www.readbyqxmd.com/read/29029196/association-between-coronary-artery-calcification-and-the-hemoglobin-glycation-index-the-kangbuk-samsung-health-study
#10
Eun-Jung Rhee, Jung-Hwan Cho, Hyemi Kwon, Se Eun Park, Cheol-Young Park, Ki-Won Ho, Sung-Woo Park, Won-Young Lee
Context: The hemoglobin glycation index (HGI) is known to be correlated with the risk of cardiovascular disease. Objective: To analyze the association between incident coronary artery calcification (CAC) and the changes in the HGI in participants without diabetes, over 4 years. Design: Setting, and Participants: A retrospective study of two-thousand-and-fifty-two participants in whom the coronary artery calcium score (CACS) was measured repeatedly over 4 years, as part of a health check-up program in Kangbuk Samsung Hospital, and had no CAC at the baseline...
September 27, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29028083/association-between-advanced-oxidation-protein-products-aopp-and-vascular-calcification-in-uremic-patients
#11
L Lin, G-J Zhao, L-L Qin
OBJECTIVE: To investigate the correlation between serum advanced oxidation protein products (AOPP) and vascular calcification in uremic patients. PATIENTS AND METHODS: The general data of included subjects were collected, and the serum AOPP, intact parathyroid hormone (iPTH), creatinine (Cre), Urea, calcium (Ca), phosphorus (P), total cholesterol (TC), triglyceride (TG), low density lipoprotein cholesterin (LDL-C), hemoglobin (Hb) and albumin (ALB) were detected...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29023576/overexpression-of-tissue-nonspecific-alkaline-phosphatase-tnap-in-endothelial-cells-accelerates-coronary-artery-disease-in-a-mouse-model-of-familial-hypercholesterolemia
#12
Filippo Romanelli, AnthonyMarco Corbo, Maryam Salehi, Manisha C Yadav, Soha Salman, David Petrosian, Omid J Rashidbaigi, Jesse Chait, Jes Kuruvilla, Maria Plummer, Ilian Radichev, Kenneth B Margulies, A Martin Gerdes, Anthony B Pinkerton, José Luis Millán, Alexei Y Savinov, Olga V Savinova
OBJECTIVE: Overexpression of tissue-nonspecific alkaline phosphatase (TNAP) in endothelium leads to arterial calcification in mice. The purpose of this study was to examine the effect of elevated endothelial TNAP on coronary atherosclerosis. In addition, we aimed to examine endogenous TNAP activity in human myocardium. APPROACH AND RESULTS: A vascular pattern of TNAP activity was observed in human non-failing, ischemic, and idiopathic dilated hearts (5 per group); no differences were noted between groups in this study...
2017: PloS One
https://www.readbyqxmd.com/read/29023410/long-term-osmotic-mini-pump-treatment-with-alpha-msh-improves-myocardial-function-in-zucker-diabetic-fatty-rats
#13
Miklos Szokol, Daniel Priksz, Mariann Bombicz, Balazs Varga, Arpad Kovacs, Gabor Aron Fulop, Tamas Csipo, Aniko Posa, Attila Toth, Zoltan Papp, Zoltan Szilvassy, Bela Juhasz
The present investigation evaluates the cardiovascular effects of the anorexigenic mediator alpha-melanocyte stimulating hormone (MSH), in a rat model of type 2 diabetes. Osmotic mini pumps delivering MSH or vehicle, for 6 weeks, were surgically implanted in Zucker Diabetic Fatty (ZDF) rats. Serum parameters, blood pressure, and weight gain were monitored along with oral glucose tolerance (OGTT). Echocardiography was conducted and, following sacrifice, the effects of treatment on ischemia/reperfusion cardiac injury were assessed using the isolated working heart method...
October 12, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29021844/intracoronary-acetylcholine-application-as-a-possible-probe-inducing-j-waves-in-patients-with-early-repolarization-syndrome
#14
REVIEW
Toru Maruyama, Kazumasa Fujita, Kei Irie, Shouhei Moriyama, Mitsuhiro Fukata
Acetylcholine is widely used for a diagnostic provocation test of coronary spasm in patients with vasospastic angina. Acetylcholine usually induces coronary vasodilatation mediated by muscarinic receptor activation, but sometimes it evokes vasoconstriction of coronary arteries where the endothelium is damaged. Early repolarization syndrome is characterized by a J wave observed at the end of the QRS complex in a surface electrocardiogram. The J wave is attributed to the transmural voltage gradient at the early repolarization phase across the ventricular wall, which stems mainly from prominent transient outward current in the epicardium, but not in the endocardium...
October 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/29021703/ginsenoside-rg3-enriched-red-ginseng-extract-inhibits-platelet-activation-and-in%C3%A2-vivo-thrombus-formation
#15
Dahye Jeong, Muhammad Irfan, Sung-Dae Kim, Suk Kim, Jun-Hwan Oh, Chae-Kyu Park, Hyun-Kyoung Kim, Man Hee Rhee
BACKGROUND: Korean Red Ginseng has been used for several decades to treat many diseases, enhancing both immunity and physical strength. Previous studies have documented the therapeutic effects of ginseng, including its anticancer, antiaging, and anti-inflammatory activities. These activities are mediated by ginsenosides present in the ginseng plant. Ginsenoside Rg3, an effective compound from red ginseng, has been shown to have antiplatelet activity in addition to its anticancer and anti-inflammatory activities...
October 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29020908/cardiac-society-of-australia-and-new-zealand-position-statement-executive-summary-coronary-artery-calcium-scoring
#16
Christian R Hamilton-Craig, Clara K Chow, John F Younger, V M Jelinek, Jonathan Chan, Gary Yh Liew
Introduction This article summarises the Cardiac Society of Australia and New Zealand position statement on coronary artery calcium (CAC) scoring. CAC scoring is a non-invasive method for quantifying coronary artery calcification using computed tomography. It is a marker of atherosclerotic plaque burden and the strongest independent predictor of future myocardial infarction and mortality. CAC scoring provides incremental risk information beyond traditional risk calculators such as the Framingham Risk Score...
October 16, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/29016370/heavily-calcified-coronary-arteries-advanced-calcium-subtraction-improves-luminal-visualization-and-diagnostic-confidence-in-dual-energy-coronary-computed-tomography-angiography
#17
Domenico De Santis, Kwang Nam Jin, U Joseph Schoepf, Katharine L Grant, Carlo N De Cecco, John W Nance, Thomas J Vogl, Andrea Laghi, Moritz H Albrecht
OBJECTIVES: The aim of this study was to evaluate a prototype dual-energy computed tomography calcium subtraction algorithm and its impact on luminal visualization in patients with heavily calcified coronary arteries. MATERIALS AND METHODS: Twenty-nine patients (62% male; mean age, 64 ± 7 years) who had undergone dual-energy coronary computed tomography angiography were retrospectively included in this institutional review board-approved, Health Insurance Portability and Accountability Act-compliant study...
October 9, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28991641/cardioprotection-of-stevioside-on-stunned-rat-hearts-a-mechano-energetical-study
#18
María I Ragone, Patricia Bonazzola, Germán A Colareda, María Lara Lazarte, Fiorella Bruno, Alicia E Consolini
BACKGROUND: The sweetener and hypoglycemic properties of stevioside (STV) are well known, as the main component of the plant Stevia rebaudiana. Given its extensive use in diabetic patients, it was of interest to evaluate its effects on the most frequent cardiovascular disease, the coronary insufficiency. PURPOSE: To study whether STV could be cardioprotective against ischemia-reperfusion (I/R) in a model of "stunning" in rat hearts. STUDY DESIGN: A preclinical study was performed in isolated hearts from rats in the following groups: non-treated rats whose hearts were perfused with STV 0...
November 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28990946/stent-and-implantable-cardioverter-defibrillator-implantation-in-medically-resistant-vasospastic-angina-patient
#19
Nil Özyüncü, Hüseyin Göksülük, Veysel Kutay Vurgun, Onur Yıldırım, Türkan Seda Tan Kürklü
Vasospastic angina, also known as Prinzmetal's angina, is thought to occur due to vascular hyper-reactivity to various stimuli. Response to medical therapy is usually good; however, 1 out of 5 patients has resistant symptoms. Rarely, potentially lethal arrhythmias can occur due to vasospasm, and those patients are reported to have a poorer prognosis. Presently described is a case of resistant vasospastic angina with persistent symptoms under calcium channel blocker and nitrate treatment. The patient presented with hemodynamically unstable rapid-rate ventricular tachycardia, which was quite resistant to recurrent cardioversion...
October 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28990941/influence-of-coronary-calcification-patterns-on-hemodynamic-outcome-of-coronary-stenoses-and-remodeling
#20
Ahmet Demirkıran, Ozan Çakır, Adem Atıcı, Emre Aslanger, Cansu Akdeniz, Berrin Umman, Sabahattin Umman, Zehra Bugra, Murat Sezer
OBJECTIVE: The histological characteristics of plaque may affect the hemodynamic outcome of a given coronary stenosis. In particular, the potential effect of volumetric calcium content and the topographical distribution in the lesion segment on physiological outcome has not yet been investigated. The aim of this study was to identify any potential correlation between patterns of calcification and the fractional flow reserve (FFR) and the coronary remodeling index (RMI). METHODS: A total of 26 stable angina pectoris and 34 acute coronary syndrome patients without persistent ST-segment elevation constituted the study population...
October 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
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