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https://www.readbyqxmd.com/read/28921914/comparison-of-relation-between-multiple-parameters-of-glycemic-variability-and-coronary-plaque-vulnerability-assessed-by-virtual-histology-intravascular-ultrasound
#1
Natsu Otowa-Suematsu, Kazuhiko Sakaguchi, Hisako Komada, Tomoaki Nakamura, Anna Sou, Yushi Hirota, Masaru Kuroda, Toshiro Shinke, Ken-Ich Hirata, Wataru Ogawa
AIMS/INTRODUCTION: Increased glycemic variability is an important contributing factor to coronary artery disease. Although various parameters of glycemic variability can be derived by continuous glucose monitoring, the clinical relevance of individual parameters has remained unclear. We have now analyzed the relation of such parameters to coronary plaque vulnerability MATERIALS AND METHODS: The standard deviation of glucose levels (SD glucose), mean amplitude of glycemic excursions (MAGE), continuous overlapping net glycemic action calculated every 1 h (CONGA-1), and mean of daily differences (MODD) were calculated from continuous glucose monitoring data for 53 subjects hospitalized for percutaneous coronary intervention...
September 16, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28918858/coronary-ct-angiography-features-of-ruptured-and-high-risk-atherosclerotic-plaques-correlation-with-intra-vascular-ultrasound
#2
Daniel R Obaid, Patrick A Calvert, Adam Brown, Deepa Gopalan, Nick E J West, James H F Rudd, Martin R Bennett
BACKGROUND: Features of ruptured and high-risk plaque have been described on coronary computed tomography angiography (coronary CTA), but not systematically assessed against intravascular ultrasound (IVUS). We examined the ability of coronary CTA to identify IVUS defined ruptured plaque and Virtual Histology Intravascular Ultrasound (VH-IVUS) defined thin-cap fibroatheroma (TCFA). METHODS: Sixty-three patients (32 with acute coronary syndrome and 31 with stable angina) underwent coronary CTA, IVUS and VH-IVUS...
September 5, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28917689/effect-of-early-pitavastatin-therapy-on-coronary-fibrous-cap-thickness-assessed-by-optical-coherence-tomography-in-patients-with-acute-coronary-syndrome-the-escort-study
#3
Tsuyoshi Nishiguchi, Takashi Kubo, Takashi Tanimoto, Yasushi Ino, Yoshiki Matsuo, Takashi Yamano, Kosei Terada, Hiroki Emori, Yosuke Katayama, Akira Taruya, Yuichi Ozaki, Yasutsugu Shiono, Kunihiro Shimamura, Takeyoshi Kameyama, Hironori Kitabata, Tomoyuki Yamaguchi, Atsushi Tanaka, Takeshi Hozumi, Takashi Akasaka
OBJECTIVES: The aim of the present study was to assess the effect of early statin therapy on fibrous-cap thickness in coronary plaques of patients with acute coronary syndrome (ACS) by using optical coherence tomography. BACKGROUND: Statins can contribute to the stabilization of coronary plaques. METHODS: This is a prospective, randomized, active-controlled, single-center study. Patients with ACS and untreated dyslipidemia were enrolled and randomly allocated (ratio 1:1) to either the early statin group (received pitavastatin 4 mg/day from baseline) or the late statin group (received pitavastatin 4 mg/day from 3 weeks after the baseline)...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28917684/role-of-low-endothelial-shear-stress-and-plaque-characteristics-in-the-prediction-of-nonculprit-major-adverse-cardiac-events-the-prospect-study
#4
Peter H Stone, Akiko Maehara, Ahmet Umit Coskun, Charles C Maynard, Marina Zaromitydou, Gerasimos Siasos, Ioannis Andreou, Dimitris Fotiadis, Kostas Stefanou, Michail Papafaklis, Lampros Michalis, Alexandra J Lansky, Gary S Mintz, Patrick W Serruys, Charles L Feldman, Gregg W Stone
OBJECTIVES: This study sought to determine whether low endothelial shear stress (ESS) adds independent prognostication for future major adverse cardiac events (MACE) in coronary lesions in patients with high-risk acute coronary syndrome (ACS) from the United States and Europe. BACKGROUND: Low ESS is a proinflammatory, proatherogenic stimulus associated with coronary plaque development, progression, and destabilization in human-like animal models and in humans. Previous natural history studies including baseline ESS characterization investigated low-risk patients...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28917119/a-mechanistic-model-for-drug-release-from-plga-based-drug-eluting-stent-a-computational-study
#5
Jahed Naghipoor, Timon Rabczuk
Atherosclerosis in the coronary artery is one of the leading causes of death in the world. The stenting as a minimally invasive technique was considered as an effective tool to reduce the severity of atherosclerotic stenosis. In-stent restenosis is the main drawback of the stenting in the coronary artery. Understanding the mechanism of drug release from drug-eluting stents and drug uptake in the arterial wall and obtaining more information about their functionality using mathematical modeling and numerical simulation, could be considered as a predictive tool to investigate in-stent restenosis growth which is experimentally expensive to study...
September 8, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28914752/ct-attenuation-of-pericoronary-adipose-tissue-in-normal-versus-atherosclerotic-coronary-segments-as-defined-by-intravascular-ultrasound
#6
Mohamed Marwan, Michaela Hell, Annika Schuhbäck, Sören Gauss, Daniel Bittner, Tobias Pflederer, Stephan Achenbach
BACKGROUND: The factors influencing genesis of atherosclerosis at specific regions within the coronary arterial system are currently uncertain. Local mechanical factors such as shear stress as well as metabolic factors, including inflammatory mediators released from epicardial fat, have been proposed. We analyzed computed tomographic (CT) attenuation of pericoronary adipose tissue in normal versus atherosclerotic coronary segments as defined by intravascular ultrasound (IVUS). PATIENTS AND METHODS: We evaluated the data sets of 29 patients who were referred for invasive coronary angiography and in whom IVUS of 1 coronary vessel was performed for clinical reasons...
September 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28912210/sex-differences-in-clinical-characteristics-psychosocial-factors-and-outcomes-among-patients-with-stable-coronary-heart-disease-insights-from-the-stability-stabilization-of-atherosclerotic-plaque-by-initiation-of-darapladib-therapy-trial
#7
Patricia Oliveira Guimarães, Christopher B Granger, Amanda Stebbins, Karen Chiswell, Claes Held, Judith S Hochman, Susan Krug-Gourley, Eva Lonn, Renato D Lopes, Ralph A H Stewart, Dragos Vinereanu, Lars Wallentin, Harvey D White, Emil Hagström, Nicolas Danchin
BACKGROUND: Greater understanding of differences between men and women with coronary heart disease is needed. METHODS AND RESULTS: In this post hoc analysis of the STABILITY (Stabilization of Atherosclerotic Plaque by Initiation of Darapladib Therapy) trial, we described psychosocial factors, treatments, and outcomes of men versus women with stable coronary heart disease and explored the association of sex with psychosocial characteristics and cardiovascular risk...
September 14, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28905758/re-testosterone-treatment-and-coronary-artery-plaque-volume-in-older%C3%A2-men-with-low-testosterone
#8
Allen D Seftel
No abstract text is available yet for this article.
October 2017: Journal of Urology
https://www.readbyqxmd.com/read/28903013/spatiotemporally-non-uniform-ca-2-dynamics-of-cardiac-purkinje-fibers-in-mouse-myocardial-infarct
#9
Taka-Aki Matsuyama, Hideo Tanaka, Hatsue Ishibashi-Ueda, Tetsuro Takamatsu
Surviving Purkinje fibers in myocardial infarct are regarded as an important substrate in arrhythmogenesis. However, poorly understood are functional properties of Purkinje fibers in the infarcted heart. We sought to visualize intracellular Ca(2+) ([Ca(2+)]i) dynamics of Purkinje fiber networks in the mouse myocardial infarct. Using 3- to 4-day-old or 7- to 9-day-old infarcted hearts after the left coronary-artery ligation corresponding, respectively, to acute or healing phase, we conducted rapid fluo4-fluorescence imaging on the endocardial surface of the left ventricular septum by macro-zoom fluorescence microscopy and rapid-scanning confocal microscopy...
September 1, 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/28899695/preeclampsia-and-coronary-plaque-erosion-manifestations-of-endothelial-dysfunction-resulting-in-cardiovascular-events-in-women
#10
Saskia C A de Jager, John A L Meeuwsen, Freeke M van Pijpen, Gerbrand A Zoet, Arjan D Barendrecht, Arie Franx, Gerard Pasterkamp, Bas B van Rijn, Marie-José Goumans, Hester M den Ruijter
Atherosclerosis is the major underlying pathology of cardiovascular disease (CVD). The risk for CVD is increased in women with a history of preeclampsia. Multiple studies have indicated that accelerated atherosclerosis underlies this increased CVD risk. Furthermore, it has been suggested that endothelial dysfunction and inflammation play an important role in the increased CVD risk of women with preeclampsia. Rupture or erosion of atherosclerotic plaques can induce the formation of thrombi that underlie the onset of acute clinical CVD such as myocardial infarction and stroke...
September 9, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28891324/relationship-between-monocyte-to-lymphocyte-ratio-and-coronary-plaque-vulnerability-in-patients-with-stable-angina
#11
Zeyuan Fan, Hanhua Ji, Yang Li, Xinwen Jian, Li Li, Tao Liu
AIM: To investigate the relationship between monocyte-to-lymphocyte ratio (MLR) and plaque vulnerability assessed by virtual histology intravascular ultrasound in patients with stable angina. METHODS: 133 patients with stable angina were enrolled. RESULTS: MLR was found to be an independent risk factor of thin cap fibrous atheroma (OR: 2.61; p = 0.025). MLR could differentiate thin cap fibrous atheroma with a sensitivity of 73.7% and a specificity of 61...
September 11, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28890871/type-2-versus-type-1-myocardial-infarction-a-comparison-of-clinical-characteristics-and-outcomes-with-a-meta-analysis-of-observational-studies
#12
Sonu Gupta, Satyanarayana R Vaidya, Sameer Arora, Amol Bahekar, Santhosh R Devarapally
BACKGROUND: Type 2 myocardial infarction (MI) is an imbalance between myocardial oxygen demand and supply, leading to myocardial ischemia. It is not due to plaque rupture, and is usually caused by a condition other than coronary artery disease (CAD). However, limited data are available comparing the prevalence of traditional coronary risk factors and mortality between type 1 and type 2 MI. We hypothesize that type 2 MI carries a higher mortality than type 1. METHODS: We searched the databases of PubMed, EMBASE, CENTRAL, and MEDLINE for studies comparing type 1 MI with type 2 MI...
August 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28888270/soluble-endothelial-cell-selective-adhesion-molecule-and-incident-cardiovascular-events-in-a-multiethnic-population
#13
Hao-Yu Ren, Amit Khera, James A de Lemos, Colby R Ayers, Anand Rohatgi
BACKGROUND: Cell adhesion molecules are key regulators of atherosclerotic plaque development, but circulating levels of soluble fragments, such as intercellular adhesion molecule (sICAM-1) and vascular cell adhesion molecule (sVCAM-1), have yielded conflicting associations with atherosclerotic cardiovascular disease (ASCVD). Endothelial cell-selective adhesion molecule (ESAM) is expressed exclusively in platelets and endothelial cells, and soluble ESAM (sESAM) levels have been associated with prevalent subclinical atherosclerosis...
September 2017: American Heart Journal
https://www.readbyqxmd.com/read/28887713/determinants-of-slow-flow-following-stent-implantation-in-intravascular-ultrasound-guided-primary-percutaneous-coronary-intervention
#14
Yusuke Watanabe, Kenichi Sakakura, Yousuke Taniguchi, Kei Yamamoto, Hiroshi Wada, Hideo Fujita, Shin-Ichi Momomura
Slow flow is a serious complication in primary percutaneous coronary intervention (PCI) and is associated with poor clinical outcomes. Intravascular ultrasound (IVUS)-guided PCI may improve clinical outcomes after drug-eluting stent implantation. The purpose of this study was to seek the factors of slow flow following stent implantation, including factors related to IVUS-guided primary PCI. The study population consisted of 339 ST-elevation myocardial infarction patients, who underwent stent deployment with IVUS...
September 8, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28886899/frailty-and-subclinical-coronary-atherosclerosis-the-multicenter-aids-cohort-study-macs
#15
Sai Krishna C Korada, Di Zhao, Martin Tibuakuu, Todd T Brown, Lisa P Jacobson, Eliseo Guallar, Robert K Bolan, Frank J Palella, Joseph B Margolick, Jeremy J Martinson, Matthew J Budoff, Wendy S Post, Erin D Michos
BACKGROUND AND AIMS: Frailty and cardiovascular disease share many risk factors. We evaluated whether frailty is independently associated with subclinical coronary atherosclerosis and whether any relationships differ by HIV-serostatus. METHODS: We studied 976 [62% HIV-infected] male participants of the Multicenter AIDS Cohort Study who underwent assessment of frailty and non-contrast cardiac CT scanning; of these, 747 men also underwent coronary CT angiography (CCTA)...
August 26, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28886156/loss-of-sprr3-in-apoe-mice-leads-to-atheroma-vulnerability-through-akt-dependent-and-independent-effects-in-vsmcs
#16
Caressa D Lietman, Amanda K Segedy, Bin Li, Sergio Fazio, James B Atkinson, MacRae F Linton, Pampee P Young
Vascular smooth muscle cells (VSMCs) represent important modulators of plaque stability in advanced lesions. We previously reported that loss of small proline-rich repeat protein 3 (Sprr3), leads to VSMC apoptosis in a PI3K/Akt-dependent manner and accelerates lesion progression. Here, we investigated the role of Sprr3 in modulating plaque stability in hyperlipidemic ApoE-/- mice. We show that loss of Sprr3 increased necrotic core size and reduced cap collagen content of atheromas in brachiocephalic arteries with evidence of plaque rupture and development of intraluminal thrombi...
2017: PloS One
https://www.readbyqxmd.com/read/28884387/genome-wide-dna-methylation-patterns-in-coronary-heart-disease
#17
X Wang, A-H Liu, Z-W Jia, K Pu, K-Y Chen, H Guo
BACKGROUND: To better understand the molecular mechanisms of atherosclerosis, we conducted a comparative analysis of DNA methylation patterns in right coronary arteries in the area of advanced atherosclerotic plaques (CAP), great saphenous vein (GSV), and internal mammary artery (IMA) of patients affected by coronary heart disease. METHODS: DNA methylation data (accession number E‑GEOD-62867) were divided into three paired groups: CAP vs. IMA, CAP vs. GSV, and IMA vs...
September 7, 2017: Herz
https://www.readbyqxmd.com/read/28881268/high-density-lipoprotein-cholesterol-associated-with-change-in-coronary-plaque-lipid-burden-assessed-by-near-infrared-spectroscopy
#18
Satoshi Honda, Samuel L Sidharta, Daisuke Shishikura, Kohei Takata, Giuseppe A Di Giovanni, Tracy Nguyen, Alex Janssan, Susan W Kim, Jordan Andrews, Peter J Psaltis, Matthew I Worthley, Stephen J Nicholls
BACKGROUND AND AIMS: Little is known about the relation between serum lipid parameters and serial change in plaque composition using in vivo coronary imaging. The aim of this study was to examine the association between serum lipids and change in coronary plaque lipid burden assessed by near-infrared spectroscopy (NIRS). METHODS: We performed serial NIRS-intravascular ultrasound studies in 49 patients who underwent coronary angiography for an acute coronary syndrome (ACS) or stable ischemic symptoms...
August 31, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28877655/developing-a-strategy-for-interventional-molecular-imaging-of-oxidized-low-density-lipoprotein-in-atherosclerosis
#19
Samata S Pandey, Dorian O Haskard, Ramzi Y Khamis
The identification of vulnerable coronary artery atherosclerotic plaques offers the prospect of either localized or systematic therapeutic targeting in order to prevent myocardial infarction. Molecular imaging of atherosclerosis adds to morphological imaging by focusing on the immunobiology hidden in and behind the endothelium and therefore may be able to improve the identification of prospective culprit lesions. Our focus has been on identifying arterial accumulation of oxidized low-density lipoprotein (oxLDL) by exploiting advances in knowledge of vascular pathobiology...
January 2017: Molecular Imaging
https://www.readbyqxmd.com/read/28877595/predicting-coronary-atherosclerotic-plaque-burden-from-clinical-parameters-bringing-old-knowledge-in-the-game
#20
Andreas A Giannopoulos, George D Giannoglou, Yiannis S Chatzizisis
No abstract text is available yet for this article.
January 1, 2017: Angiology
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