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Atherosclerotic stenosis

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https://www.readbyqxmd.com/read/29776555/sudden-coronary-death-in-the-young-evidence-of-contractile-phenotype-of-smooth-muscle-cells-in-the-culprit-atherosclerotic-plaque
#1
Stefania Rizzo, Matteo Coen, Antonija Sakic, Monica De Gaspari, Gaetano Thiene, Giulio Gabbiani, Cristina Basso, Marie-Luce Bochaton-Piallat
BACKGROUND: Culprit coronary atherosclerotic plaques (APs) from young sudden cardiac death (SCD) victims are mostly non-atheromatous, i.e., consisting of proliferative smooth muscle cells (SMCs). Coronary vasospasm has been advocated to explain plaque instability in the absence of thrombosis. Our aim was to characterize the SMC phenotype in the intima and media of coronary arteries from young SCD victims. METHODS AND RESULTS: A total of 38 coronary artery segments were studied: (a) 18 APs from young (≤40 years old) SCD patients, (b) 9 APs from old (>40 years old) SCD patients, (c) 11 non-atherosclerotic coronary arteries from young patients (≤40 years old)...
August 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29764828/medically-managed-coronary-artery-aneurysm-without-concomitant-stenosis
#2
Rohita Reji, Michael Nguyen
Coronary artery aneurysms (CAAs) are relatively rare with an incidence varying from 1.4% to 5.3% of patients undergoing coronary angiography. Studies suggest that management of CAA can be guided by the absence or presence of significant coronary artery stenosis, with most concluding that CAA associated with stenosis of ≥70% should be managed surgically or with percutaneous intervention. However, given the paucity of cases described in the literature and lack of randomised control trials, no consensus exists on the natural history, prognosis or management of CAAs without significant concomitant stenosis...
May 14, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29753733/coronary-computed-tomographic-angiography-findings-and-their-therapeutic-implications-in-asymptomatic-patients-with-familial-hypercholesterolemia-lessons-from-the-safeheart-study
#3
Leopoldo Pérez de Isla, Rodrigo Alonso, Ovidio Muñiz-Grijalvo, José Luis Díaz-Díaz, Daniel Zambón, José Pablo Miramontes, Francisco Fuentes, José Juan Gómez de Diego, Aurora González-Estrada, Nelva Mata, Adriana Saltijeral, Manuel Barreiro, Marta Tomás, Raimundo de Andrés, Rosa Argüeso, Maria Pilar Serrano Gotarredona, Silvia Navarro Herrero, Rosario J Perea Palazón, Teresa M de Caralt, Luisa Arrojo Suárez de Centi, Svetlana Zhilina, Simona Espejo Pérez, Teresa Padró, Pedro Mata
BACKGROUND: Familial hypercholesterolemia (FH) confers an increased risk of premature atherosclerotic disease. Coronary computed tomographic angiography (CTA) can assess preclinical coronary atherosclerosis. OBJECTIVES: To describe coronary CTA findings in asymptomatic molecularly defined FH individuals, to identify those factors related to its presence and extension, and to assess the impact of these results in patients' care and estimated risk. METHODS: Four hundred and forty individuals with FH, without clinical cardiovascular disease, were consecutively enrolled and underwent a coronary CTA that was used to analyze coronary atherosclerosis based on coronary calcium score (CCS), sum of stenosis severity, and plaque composition sum (PCS)...
April 17, 2018: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/29752069/plaque-distribution-and-characteristics-in-low-grade-middle-cerebral-artery-stenosis-and-its-clinical-relevance-a-3-dimensional-high-resolution-magnetic-resonance-imaging-study
#4
Shan Shan Lu, Song Ge, Chun Qiu Su, Jun Xie, Hai Bin Shi, Xun Ning Hong
OBJECTIVES: The significance of atherosclerotic plaques in the parental artery with low-grade stenosis remains undetermined. We used three-dimensional high-resolution magnetic resonance imaging (3D HR-MRI) to investigate plaque distribution and characteristics of low-grade middle cerebral artery (MCA) stenosis and its clinical relevance with stroke events. METHODS: We retrospectively studied 22 symptomatic patients and 24 asymptomatic patients with low-grade MCA stenosis (<50%)...
May 8, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29747829/local-low-shear-stress-and-endothelial-dysfunction-in-patients-with-nonobstructive-coronary-atherosclerosis
#5
Gerasimos Siasos, Jaskanwal D Sara, Marina Zaromytidou, Kyoung H Park, Ahmet Umit Coskun, Lilach O Lerman, Evangelos Oikonomou, Charles C Maynard, Dimitris Fotiadis, Kostas Stefanou, Michail Papafaklis, Lampros Michalis, Charles Feldman, Amir Lerman, Peter H Stone
BACKGROUND: Local hemodynamic factors are important determinants of atherosclerotic plaque development and progression. OBJECTIVES: The goal of this study was to determine the association between low endothelial shear stress (ESS) and microvascular and epicardial endothelial dysfunction in patients with early atherosclerosis. METHODS: Sixty-five patients (mean age 52 ± 11 years) with nonobstructive coronary atherosclerosis (luminal diameter stenosis <30%) were included...
May 15, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29745628/revascularization-of-serious-atherosclerotic-systemic-artery-stenosis-caused-by-long-term-primary-hypertension-in-a-30-year-old-male
#6
Guodong Ma, Jie Fang, Zhe Zhang, Li Zhou, Xiangyu Gao, Huiqiang Zhao, Aidong Shen, Hui Chen, Hongwei Li
No abstract text is available yet for this article.
May 10, 2018: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29737302/drug-effect-of-atorvastatin-on-middle-cerebral-atherosclerotic-stenosis-and-high-resolution-nmr-diagnosis
#7
Xingchi Chen, Sainan Wang, Lulu Lin, Yu Li, Hui Zhang
Atherosclerosis (AS) is a chronic inflammatory reaction with the pathological changes in the lipid deposition of arterial intima. The disorder of blood lipid metabolism is the main factor of the occurrence and development of AS, and the inflammatory reaction and autoimmune reaction also run through the development of AS. In this study, we compared the efficacy and safety of atorvastatin, simvastatin, pravastatin and rosuvastatin in the treatment of AS. At the same time, we used high resolution magnetic resonance imaging (MRI) to assess the changes in plaque area in the middle cerebral artery and the patch area before and after drug treatment...
May 2018: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29736635/effect-of-distal-thickening-and-stiffening-of-plaque-cap-on-arterial-wall-mechanics
#8
Pengsrorn Chhai, Kyehan Rhee
To investigate the effect of longitudinal variations of cap thickness and tissue properties on wall stresses and strains along the atherosclerotic stenosis, stenotic plaque models (uniformly thick, distally thickened, homogenous, and distally stiffened) were constructed and subjected to computational stress analyses with due consideration of fluid-structure interactions (FSI). The analysis considered three different cap thicknesses-45, 65, and 200 μm-and tissue properties-soft, fibrous, and hard. The maximum peak cap stress (PCS) and strain were observed in the upstream throat section and demonstrated increases of the order of 345 and 190%, respectively, as the cap thickness was reduced from 200 to 45 μm in uniformly thick models...
May 8, 2018: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29735469/drug-effect-of-atorvastatin-on-middle-cerebral-atherosclerotic-stenosis-and-high-resolution-nmr-diagnosis
#9
Xingchi Chen, Sainan Wang, Lulu Lin, Yu Li, Hui Zhang
Atherosclerosis (AS) is a chronic inflammatory reaction with the pathological changes in the lipid deposition of arterial intima. The disorder of blood lipid metabolism is the main factor of the occurrence and development of AS, and the inflammatory reaction and autoimmune reaction also run through the development of AS. In this study, we compared the efficacy and safety of atorvastatin, simvastatin, pravastatin and rosuvastatin in the treatment of AS. At the same time, we used high resolution magnetic resonance imaging (MRI) to assess the changes in plaque area in the middle cerebral artery and the patch area before and after drug treatment...
May 2018: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29730481/age-threshold-for-proper-definition-of-premature-coronary-artery-disease-in-males
#10
REVIEW
Hasan A Abderrahman, Imad M Al-Abdallat, Ahmed K Idhair
BACKGROUND: There is no universally accepted definition for the cut point age before which atherosclerosis is considered "premature." This is a retrospective study aimed to utilize the medico legal autopsy information for finding a proper definition of the age threshold of premature atherosclerosis in males. OBJECTIVES: This work aimed to utilize autopsy reports data that were issued at Jordan University Hospital to evaluate age-related differences in the distribution of coronary atherosclerotic and myocardial lesions and the determination of the age threshold at which such differences became apparent in male deaths...
April 30, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29713929/coronary-computed-tomography-angiography-in-the-evaluation-of-intermediate-risk-asymptomatic-individuals
#11
Ernesto Di Cesare, Lucia Patriarca, Luca Panebianco, Federico Bruno, Pierpaolo Palumbo, Ester Cannizzaro, Alessandra Splendiani, Antonio Barile, Carlo Masciocchi
Cardiovascular disease is still one of the main causes of death and an early identification of coronary artery disease (CAD) remains the primary step in clinical management of patients with cardiovascular risk factor. Coronary computed tomography angiography (CCTA) has shown high sensitivity in CAD detection and could be helpful as screening method. The purpose of this study was to assess the prevalence of coronary artery disease detected by CCTA in asymptomatic patients with an intermediate risk of CAD. MATERIALS AND METHODS: We retrospectively selected 185 asymptomatic patients with an intermediate Framingan Risk Score (mean age was 62...
April 30, 2018: La Radiologia Medica
https://www.readbyqxmd.com/read/29713603/combating-atherosclerosis-with-targeted-nanomedicines-recent-advances-and-future-prospective
#12
REVIEW
Ailar Nakhlband, Morteza Eskandani, Yadollah Omidi, Nazli Saeedi, Samad Ghaffari, Jaleh Barar, Alireza Garjani
Introduction: Cardiovascular diseases (CVDs) is recognized as the leading cause of mortality worldwide. The increasing prevalence of such disease demands novel therapeutic and diagnostic approaches to overcome associated clinical/social issues. Recent advances in nanotechnology and biological sciences have provided intriguing insights to employ targeted Nanomachines to the desired location as imaging, diagnosis, and therapeutic modalities. Nanomedicines as novel tools for enhanced drug delivery, imaging, and diagnosis strategies have shown great promise to combat cardiovascular diseases...
2018: BioImpacts: BI
https://www.readbyqxmd.com/read/29701384/endothelial-function-and-vascular-properties-in-severe-aortic-stenosis-before-and-after-aortic-valve-replacement-surgery
#13
Renata Melo, Francisca A Saraiva, Ana Filipa Ferreira, Soraia Moreira, Raquel Moreira, Rui J Cerqueira, Mário J Amorim, Paulo Pinho, André P Lourenço, Adelino F Leite-Moreira
INTRODUCTION: The degenerative process that results in aortic valve stenosis (AS) has pathophysiological features similar to the atherosclerotic process. We therefore hypothesized that, as in atherosclerosis, endothelial and vascular dysfunction could be a pathophysiologic feature of AS. AIM: To evaluate endothelial function before and after aortic valve replacement (AVR) surgery in patients with severe AS. To correlate endothelial function with severity of AS and clinical profile...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29701358/carotid-stenosis-in-cardiac-surgery-patients
#14
Pedro Pinto Sousa, Gabriela Teixeira, João Gonçalves, Carlos Veiga, Pedro Sá Pinto, Pedro Brandão, Alexandra Canedo, Luis Vouga, Rui Almeida
INTRODUCTION: Ischemic stroke is a potential perioperative complication after an open heart surgery (OHS). Whether a carotid stenosis or occlusion is associated with an increased risk of perioperative stroke in patients or just a risk factor has been a concern of intense debate in the literature. METHODS: We retrospectively analyzed patients submitted to OHS between January and December2016 with known asymptomatic carotid disease. The data from 85 consecutive patients undergoing coronary artery bypass grafting, valve replacement, or both was collected...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29697684/-carotid-endarterectomy-and-stenting-in-patients-with-internal-carotid-artery-stenosis-and-contralateral-occlusion
#15
A V Gavrilenko, S I Skrylev, A A Kravchenko, A V Novikov
AIM: To determine surgical risk factors and to compare early outcomes after carotid endarterectomy and carotid stenting in patients with internal carotid artery stenosis and contralateral occlusion. MATERIAL AND METHODS: 132 patients were enrolled. 62 and 70 patients underwent carotid endarterectomy and carotid stenting respectively. Early postoperative results were compared depending on type of surgical intervention and presence of risk factors. RESULTS: Significant difference between groups was only found for incidence of neuropathy of the cranial nerves...
2018: Khirurgiia
https://www.readbyqxmd.com/read/29681571/the-outcome-of-percutaneous-coronary-intervention-for-significant-atherosclerotic-lesions-in-segment-proximal-to-myocardial-bridge-at-left-anterior-descending-coronary-artery
#16
Zhang Hao, Jia Xinwei, Zakarya Ahmed, Pan Huanjun, Wang Zhanqi, Wang Yanfei, Chen Chunhong, Zhang Chan, Fu Liqiang
This study aimed to evaluate the efficacy of percutaneous coronary intervention (PCI) for significant atherosclerosis lesions proximal to myocardial bridge (MB) at left anterior descending coronary artery (LAD).A total of 330 consecutive patients with LAD significant stenosis, diagnosed as acute coronary syndrome (ACS), were included. Based on whether combined with MB, the patients were divided into the MB group (MB, n = 48) and non-MB group (NMB, n = 282). Drug eluting stents (DES) were successfully implanted in the stenostic segments prior to MB...
April 20, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29678649/nine-month-outcomes-of-the-durability-iliac-study-on-self-expanding-stents-for-symptomatic-peripheral-artery-disease
#17
Peter Faries, Michael Jaff, Patrick Peeters, Yazan Khatib, David Roberts, Marc Bosiers, Rajesh Malik, Reid Ravin, John Rundback
OBJECTIVE: The DURABILITY Iliac clinical study evaluated the safety and effectiveness of two nitinol self-expanding stents for the treatment of atherosclerotic common and external iliac artery lesions up to 10 cm in length and >50% stenosis in subjects with Rutherford Classification peripheral arterial disease stages 2-4. METHODS: DURABILITY Iliac was a prospective, multicenter, core lab adjudicated, nonrandomized clinical study enrolling 75 subjects from 15 sites in the United States and Europe...
April 17, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29660989/long-term-outcome-of-stenting-for-atherosclerotic-renal-artery-stenosis-and-the-effect-of-angiographic-restenosis
#18
Karin Zachrisson, Sven Elverfors, Gert Jensen, Mikael Hellström, Mikael Svensson, Hans Herlitz, Mårten Falkenberg
Background Symptomatic renal artery stenosis (RAS) is mainly treated with pharmacological blood pressure control, sometimes with percutaneous transluminal renal angioplasty (PTRA). It is unclear if PTRA benefits these patients over time. Purpose To determine long-term renal function, morbidity, and mortality in patients with symptomatic RAS treated with PTRA, and whether long-term outcomes are associated with angiographic restenosis. Material and Methods Retrospective single-center, long-term follow-up of 57 patients with atherosclerotic RAS treated with PTRA with stent during 1995-2004 and investigated for restenosis with angiography after one year...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29655510/histopathological-validation-of-optical-coherence-tomography-findings-of-the-coronary-arteries
#19
REVIEW
Kenichi Fujii, Rika Kawakami, Seiichi Hirota
Optical coherence tomography (OCT), a catheter-based imaging modality for the visualization of coronary arteries, is widely used during percutaneous coronary intervention to improve the understanding of the anatomy of coronary artery stenosis and to elucidate the mechanisms of atherosclerosis. In this review, we provide a short description of the histopathological validations of OCT for visualizing atherosclerotic plaques and vascular healing response after drug-eluting stent (DES) implantation. Because OCT measures the intensity of light returning from within a tissue, tissue having a higher heterogeneity of optical index of refraction, such as microcalcification deposition and foam cell accumulation on the luminal surface, may exhibit stronger optical scattering that appears as a thin-cap fibroatheroma image...
April 11, 2018: Journal of Cardiology
https://www.readbyqxmd.com/read/29627787/tyrosine-kinase-inhibitor-induced-rapidly-progressive-vasculopathy-after-intracranial-stent-placement
#20
Ching-Jen Chen, Brian J Sorace, Aria Shakeri, Min S Park, Andrew M Southerland, Bradford B Worrall, M Yashar S Kalani
Tyrosine kinase inhibitor (TKI) therapy for chronic myeloid leukemia (CML) has been associated with progressive peripheral arterial disease and, more recently, rare cases of intracranial vascular stenosis have been reported. We report the fourth case of TKI treatment associated intracranial vasculopathy and rapid progression of intracranial vascular stenosis following intracranial stent placement. This was a 49-year-old woman who developed right-sided weakness, paresthesias, numbness, and speech difficulties 7 years following TKI treatment for CML...
April 7, 2018: Journal of Neurointerventional Surgery
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