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https://www.readbyqxmd.com/read/28102478/influence-of-inflammation-and-atherosclerosis-in-atrial-fibrillation
#1
REVIEW
Rose Mary Ferreira Lisboa da Silva
BACKGROUND: Inflammation markers have been associated with cardiovascular diseases including atrial fibrillation. This arrhythmia is the most frequent, with an incidence of 38/1000 person-years. PURPOSE OF REVIEW: The aims of this study are to discuss the association between inflammation, atherosclerosis and atrial fibrillation and its clinical implications. Atherosclerosis is a chronic inflammatory disease and inflammation is a triggering factor of atherosclerotic plaque rupture...
January 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28100879/association-between-prior-aspirin-use-and-morphological-features-of-culprit-lesions-at-first-presentation-of-acute-coronary-syndrome-assessed-by-optical-coherence-tomography
#2
Taishi Yonetsu, Tetsumin Lee, Tadashi Murai, Yoshinori Kanno, Rikuta Hamaya, Sadamitsu Ichijo, Takayuki Niida, Masahiro Hada, Makoto Araki, Junji Matsuda, Eisuke Usui, Masahiro Hoshino, Yoshihisa Kanaji, Tsunekazu Kakuta
BACKGROUND: The effect of prior use of aspirin (ASA) on the onset of acute coronary syndrome (ACS) has not been clarified. This study used optical coherence tomography (OCT) to investigate the morphological features of culprit lesions of ACS in patients with prior ASA use.Methods and Results:In total, 442 patients with their first ACS episode undergoing OCT for the culprit lesions were investigated. Clinical characteristics, OCT findings, and adverse events at 30 days were compared between patients with prior ASA use and ASA-naïve patients (non-ASA)...
January 19, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28099589/which-coronary-lesions-are-more-prone-to-cause-acute-myocardial-infarction
#3
Taner Sen, Mehmet Ali Astarcioglu, Osman Beton, Lale Dinc Asarcikli, Celal Kilit
Background: According to common belief, most myocardial infarctions (MIs) are due to the rupture of nonsevere, vulnerable plaques with < 70% obstruction. Data from recent trials challenge this belief, suggesting that the risk of coronary occlusion is, in fact, much higher after severe stenosis. The aim of this study was to investigate whether or not acute ST-elevation MIs result from high-grade stenoses by evaluating the presence of coronary collateral circulation (CCC). Methods: We retrospectively included 207 consecutive patients who had undergone primary percutaneous coronary intervention for acute ST-elevation MI...
January 16, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28099219/a-review-of-the-clinical-utility-of-intravascular-ultrasound-ivus-and-optical-coherence-tomography-oct-in-the-assessment-and-treatment-of-coronary-artery-disease
#4
Stephen Daniel Matthews, William H Frishman
Coronary artery disease (CAD) remains one of the leading causes of morbidity and mortality in the United States. As a medical society, we continue to search for ways to better treat CAD and prevent acute coronary syndrome (ACS). As it stands, only statins and anti-platelets agents have been proven to significantly reduce the occurrence of ACS. A histopathological understanding of the pathogenesis of ACS has provided insight into the importance of plaque morphology. Therefore, it has been proposed that increasing the ability to detect true vulnerable, "at-risk" lesions, would foster the use of percutaneous coronary intervention as a means for the prevention of ACS...
January 11, 2017: Cardiology in Review
https://www.readbyqxmd.com/read/28093417/cardiovascular-risk-of-patients-with-gout-seen-at-rheumatology-clinics-following-a-structured-assessment
#5
Mariano Andrés, José Antonio Bernal, Francisca Sivera, Neus Quilis, Loreto Carmona, Paloma Vela, Eliseo Pascual
OBJECTIVES: Gout-associated cardiovascular (CV) risk relates to comorbidities and crystal-led inflammation. The aim was to estimate the CV risk by prediction tools in new patients with gout and to assess whether ultrasonographic carotid changes are present in patients without high CV risk. METHODS: Cross-sectional study. Consecutive new patients with crystal-proven gout underwent a structured CV consultation, including CV events, risk factors and two risk prediction tools-the Systematic COronary Evaluation (SCORE) and the Framingham Heart Study (FHS)...
January 16, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28092507/real-time-intravascular-ultrasound-and-photoacoustic-imaging
#6
Donald VanderLaan, Andrei B Karpiouk, Doug Yeager, Stanislav Emelianov
Combined intravascular ultrasound and intravascular photoacoustic (IVUS/IVPA) imaging is an emerging hybrid modality being explored as a means of improving the characterization of atherosclerotic plaque anatomical and compositional features. While initial demonstrations of the technique have been encouraging, they have been limited by catheter rotation and data acquisition, displaying, and processing rates on the order of several seconds per frame as well as the use of off-line image processing. Herein, we present a complete IVUS/IVPA imaging system and method capable of real-time IVUS/IVPA imaging, with online data acquisition, image processing, and display of both IVUS and IVPA images...
January 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28087177/lymphocytic-myocarditis-occurs-with-myocardial-infarction-and-coincides-with-increased-inflammation-hemorrhage-and-instability-in-coronary-artery-atherosclerotic-plaques
#7
Linde Woudstra, P Stefan Biesbroek, Reindert W Emmens, Stephane Heymans, Lynda J Juffermans, Albert C van Rossum, Hans W M Niessen, Paul A J Krijnen
OBJECTIVE: Although lymphocytic myocarditis (LM) clinically can mimic myocardial infarction (MI), they are regarded as distinct clinical entities. However, we observed a high prevalence (32%) of recent MI in patients diagnosed post-mortem with LM. To investigate if LM changes coronary atherosclerotic plaque, we analyzed in autopsied hearts the inflammatory infiltrate and stability in coronary atherosclerotic lesions in patients with LM and/or MI. METHODS: The three main coronary arteries were isolated at autopsy of patients with LM, with MI of 3-6h old, with LM and MI of 3-6h old (LM+MI) and controls...
January 7, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28079701/ex-vivo-assessment-of-coronary-atherosclerotic-plaque-by-grating-based-phase-contrast-computed-tomography-correlation-with-optical-coherence-tomography
#8
Christopher Habbel, Holger Hetterich, Marian Willner, Julia Herzen, Kristin Steigerwald, Sigrid Auweter, Ulrich Schüller, Jörg Hausleiter, Steffen Massberg, Maximilian Reiser, Franz Pfeiffer, Tobias Saam, Fabian Bamberg
OBJECTIVES: The aim of this study was to determine the diagnostic accuracy of grating-based phase-contrast computed tomography (gb-PCCT) to classify and quantify coronary vessel characteristics in comparison with optical coherence tomography (OCT) and histopathology in an ex vivo setting. MATERIALS AND METHODS: After excision from 5 heart specimens, 15 human coronary arteries underwent gb-PCCT examination using an experimental imaging setup consisting of a rotating molybdenum anode x-ray tube, a Talbot-Lau grating interferometer, and a single photon counting detector...
January 10, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28077820/acute-coronary-syndrome-demonstrating-plaque-rupture-in-calcified-lesions-visualized-by-optical-frequency-domain-imaging
#9
Yutaka Goryo, Teruyoshi Kume, Yusuke Kobayashi, Hiroshi Okamoto, Ai Kawamura, Kenzo Fukuhara, Terumasa Koyama, Ryotaro Yamada, Koichiro Imai, Yoji Neishi, Shiro Uemura
A 68-year-old female with acute coronary syndrome was transferred to our hospital. Emergency coronary angiography showed 90% stenosis with severe calcification in the proximal right coronary artery (RCA). Intravascular ultrasound (IVUS) images were obtained and showed circumferential heavy calcification without any evidence of plaque rupture. Optical frequency domain imaging (OFDI) images were obtained in the RCA lesion 3 days after the initial coronary angiography. A cavity of plaque rupture in the calcified plaque by using OFDI was observed in the lesion, which could not be recognized by IVUS...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28077384/predictors-of-nonuse-of-a-high-potency-statin-after-an-acute-coronary-syndrome-insights-from-the-stabilization-of-plaques-using-darapladib-thrombolysis-in-myocardial-infarction-52-solid-timi-52-trial
#10
Alon Eisen, Christopher P Cannon, Eugene Braunwald, Dylan L Steen, Jing Zhou, Erica L Goodrich, KyungAh Im, Anthony J Dalby, Jindrich Spinar, Shruti Daga, Mary Ann Lukas, Michelle L O'Donoghue
BACKGROUND: High-potency statins reduce cardiovascular events after acute coronary syndromes but remain underused in clinical practice. We examined predictors of nonuse of high-potency statins after acute coronary syndromes. METHODS AND RESULTS: The Stabilization of pLaques usIng Darapladib-Thrombolysis in Myocardial Infarction (SOLID-TIMI 52) trial enrolled patients after an acute coronary syndrome in 36 countries between 2009 and 2011. Statin use was strongly encouraged throughout the trial, and statin potency was at the discretion of the treating physician...
January 11, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28069011/myeloperoxidase-oxidized-high-density-lipoprotein-impairs-atherosclerotic-plaque-stability-by-inhibiting-smooth-muscle-cell-migration
#11
Boda Zhou, Lingyun Zu, Yong Chen, Xilong Zheng, Yuhui Wang, Bing Pan, Min Dong, Enchen Zhou, Mingming Zhao, Youyi Zhang, Lemin Zheng, Wei Gao
BACKGROUND: High density lipoprotein (HDL) has been proved to be a protective factor for coronary heart disease. Notably, HDL in atherosclerotic plaques can be nitrated (NO2-oxHDL) and chlorinated (Cl-oxHDL) by myeloperoxidase (MPO), likely compromising its cardiovascular protective effects. METHOD: Here we determined the effects of NO2-oxHDL and Cl-oxHDL on SMC migration using wound healing and transwell assays, proliferation using MTT and BrdU assays, and apoptosis using Annexin-V assay in vitro, as well as on atherosclerotic plaque stability in vivo using a coratid artery collar implantation mice model...
January 10, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28068560/effect-of-sarpogrelate-a-selective-5-ht2a-receptor-antagonist-on-characteristics-of-coronary-artery-disease-in-patients-with-type-2-diabetes
#12
Dong-Hwa Lee, Eun Ju Chun, Jee Hye Hur, Se Hee Min, Jie-Eun Lee, Tae Jung Oh, Kyoung Min Kim, Hak Chul Jang, Seung Jin Han, Doo Kyoung Kang, Hae Jin Kim, Soo Lim
BACKGROUND AND AIMS: Sarpogrelate, a 5-hydroxytryptamine type 2A antagonist, is a potential antiplatelet agent. We performed a randomized study to evaluate the effect of sarpogrelate on vascular health in Korean patients with diabetes. METHODS: Forty diabetic patients aged 58.6 ± 6.8 years with 10-75% coronary artery stenosis, as assessed by coronary computed tomography angiography, were randomly assigned to sarpogrelate 300 mg/day plus aspirin 100 mg/day (SPG + ASA group) or aspirin 100 mg/day alone (ASA group) for 6 months...
December 10, 2016: Atherosclerosis
https://www.readbyqxmd.com/read/28067196/management-of-st-elevation-myocardial-infarction-in-young-patients-by-limiting-implantation-of-durable-intracoronary-devices-and-guided-by-optical-frequency-domain-imaging-proof-of-concept-study
#13
Nicolas Combaret, Géraud Souteyrand, Nicolas Barber-Chamoux, Guilhem Malcles, Aimé Amonchot, Bruno Pereira, Louis Le Bivic, Romain Eschalier, Romain Trésorier, Pascal Motreff
AIMS: To demonstrate the feasibility and safety of ST-elevation myocardial infarction (STEMI) management in young patients by limiting implantation of durable intracoronary devices (using bioresorbable stent or medical treatment alone). METHODS AND RESULTS: Patients <50 years admitted for STEMI with single vessel disease received a two-stage management strategy. During a second coronary angiography performed between day 2 and day 7, optical frequency domain imaging (OFDI) enabled to guide therapeutic management: i) in the case of a stenosis greater that 70% or plaque prolapse, implantation of a BVS; ii) in the other cases, continuation of medical management alone without stenting...
January 10, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28065380/iterative-model-reconstruction-reduces-calcified-plaque-volume-in-coronary-ct-angiography
#14
Mihály Károlyi, Bálint Szilveszter, Márton Kolossváry, Richard A P Takx, Csilla Celeng, Andrea Bartykowszki, Ádám L Jermendy, Alexisz Panajotu, Júlia Karády, Rolf Raaijmakers, Walter Giepmans, Béla Merkely, Pál Maurovich-Horvat
OBJECTIVE: To assess the impact of iterative model reconstruction (IMR) on calcified plaque quantification as compared to filtered back projection reconstruction (FBP) and hybrid iterative reconstruction (HIR) in coronary computed tomography angiography (CTA). METHODS: Raw image data of 52 patients who underwent 256-slice CTA were reconstructed with IMR, HIR and FBP. We evaluated qualitative, quantitative image quality parameters and quantified calcified and partially calcified plaque volumes using automated software...
February 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28064551/fd-oct-and-ivus-intravascular-imaging-modalities-in-peripheral-vasculature
#15
S Spiliopoulos, P Kitrou, K Katsanos, D Karnabatidis
Intra-Vascular Ultra-Sound (IVUS) and Frequency Domain-Optical Coherence Tomography (FD-OCT), in vivo, intra-vascular, imaging modalities, widely used in the field of coronary disease, have been recently implemented in peripheral endovascular procedures, for procedural assessment, plaque characterization and determination of predictors of treatment outcomes. Their unique characteristics have also been used in order to provide additional features and improve the performance of re-entry devices and atherotomes...
January 13, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28062170/an-artificial-neural-network-method-for-lumen-and-media-adventitia-border-detection-in-ivus
#16
Shengran Su, Zhenghui Hu, Qiang Lin, William Kongto Hau, Zhifan Gao, Heye Zhang
Intravascular ultrasound (IVUS) has been well recognized as one powerful imaging technique to evaluate the stenosis inside the coronary arteries. The detection of lumen border and media-adventitia (MA) border in IVUS images is the key procedure to determine the plaque burden inside the coronary arteries, but this detection could be burdensome to the doctor because of large volume of the IVUS images. In this paper, we use the artificial neural network (ANN) method as the feature learning algorithm for the detection of the lumen and MA borders in IVUS images...
November 17, 2016: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28060223/coronary-plaque-progression-and-regression-in-asymptomatic-african-american-chronic-cocaine-users-with-obstructive-coronary-stenoses-a-preliminary-study
#17
Veit Sandfort, David A Bluemke, Jose Vargas, Jeffrey A Brinker, Gary Gerstenblith, Thomas Kickler, Gang Zheng, Ji Li, Shaoguang Chen, Hong Lai, Elliot K Fishman, Shenghan Lai
OBJECTIVE: Although rapid progression of coronary atherosclerosis was observed in chronic cocaine users, it is unknown whether reduced cocaine use retards the progression of atherosclerosis. We investigated whether reduced cocaine use over a 12-month period was associated with coronary plaque regression in cocaine users. METHODS: Fifteen African American chronic cocaine users with previously coronary computed tomography angiography (CCTA)-confirmed >50% coronary stenosis in Baltimore, Maryland, were enrolled in a study to investigate whether reduced cocaine use is associated with changes in coronary plaque burden over a 12-month period of cash-based incentive intervention, which was implemented to systematically reinforce cocaine abstinence...
January 6, 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28059143/influence-of-coronary-artery-disease-and-subclinical-atherosclerosis-related-polymorphisms-on-the-risk-of-atherosclerosis-in-rheumatoid-arthritis
#18
Raquel López-Mejías, Alfonso Corrales, Esther Vicente, Montserrat Robustillo-Villarino, Carlos González-Juanatey, Javier Llorca, Fernanda Genre, Sara Remuzgo-Martínez, Trinidad Dierssen-Sotos, José A Miranda-Filloy, Marco A Ramírez Huaranga, Trinitario Pina, Ricardo Blanco, Juan J Alegre-Sancho, Enrique Raya, Verónica Mijares, Begoña Ubilla, Iván Ferraz-Amaro, Carmen Gómez-Vaquero, Alejandro Balsa, Francisco J López-Longo, Patricia Carreira, Isidoro González-Álvaro, J Gonzalo Ocejo-Vinyals, Luis Rodríguez-Rodríguez, Benjamín Fernández-Gutiérrez, Santos Castañeda, Javier Martín, Miguel A González-Gay
A genetic component influences the development of atherosclerosis in the general population and also in rheumatoid arthritis (RA). However, genetic polymorphisms associated with atherosclerosis in the general population are not always involved in the development of cardiovascular disease (CVD) in RA. Accordingly, a study in North-American RA patients did not show the association reported in the general population of coronary artery disease with a series of relevant polymorphisms (TCF21, LPA, HHIPL1, RASD1-PEMT, MRPS6, CYP17A1-CNNM2-NT5C2, SMG6-SRR, PHACTR1, WDR12 and COL4A1-COL4A2)...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28059035/the-sdldl-reduces-mrc1-expression-level-and-secretion-of-histamine-in-differentiated-m2-macrophages-from-patients-with-coronary-artery-stenosis
#19
Ameneh Yarnazari, Mohammad Najafi, Parisa Hassanpour, Syed Reza Hosseini-Fard, Abdollah Amirfarhangi
The macrophage polarization is proposed to be involved in initial events and remodeling of atherosclerosis plaques. Mannose receptor, C type 1 (MRC1) is a trans-membrane glycoprotein participating in phagocytosis and, is highly expressed in the M2 macrophages. The aim of this study was to investigate the effects of sdLDL (small dense LDL) on the MRC1 gene expression level and secretion of histamine in the differentiated M2 macrophages from monocytes of patients with coronary artery stenosis and healthy subjects...
January 5, 2017: Cardiovascular & Hematological Disorders Drug Targets
https://www.readbyqxmd.com/read/28057795/pleiotropic-effects-of-statins-on-the-cardiovascular-system
#20
REVIEW
Adam Oesterle, Ulrich Laufs, James K Liao
The statins have been used for 30 years to prevent coronary artery disease and stroke. Their primary mechanism of action is the lowering of serum cholesterol through inhibiting hepatic cholesterol biosynthesis thereby upregulating the hepatic low-density lipoprotein (LDL) receptors and increasing the clearance of LDL-cholesterol. Statins may exert cardiovascular protective effects that are independent of LDL-cholesterol lowering called pleiotropic effects. Because statins inhibit the production of isoprenoid intermediates in the cholesterol biosynthetic pathway, the post-translational prenylation of small GTP-binding proteins such as Rho and Rac, and their downstream effectors such as Rho kinase and nicotinamide adenine dinucleotide phosphate oxidases are also inhibited...
January 6, 2017: Circulation Research
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