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https://www.readbyqxmd.com/read/28706117/age-specific-sex-differences-in-magnetic-resonance-imaging-depicted-carotid-intraplaque-hemorrhage
#1
Navneet Singh, Alan R Moody, Bowen Zhang, Isabella Kaminski, Kush Kapur, Stephanie Chiu, Pascal N Tyrrell
BACKGROUND AND PURPOSE: Stroke rates are higher in men compared with women in the fourth through seventh decades of life, and higher rates may result from differences in carotid intraplaque hemorrhage (IPH), an unstable atherosclerotic plaque component. We report age-specific sex differences in the presence of magnetic resonance imaging-depicted carotid IPH. METHODS: Patients (n=1115) underwent magnetic resonance imaging for carotid IPH between 2005 and 2014. Low-grade carotid stenosis patients (n=906) without prior endarterectomy were eligible for this cross-sectional study...
July 13, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28689783/immune-complexes-containing-malondialdehyde-mda-ldl-induce-apoptosis-in-human-macrophages
#2
Gabriel Virella, Kelsey Wilson, Johnathon Elkes, Samar M Hammad, Hussein A Rajab, Yanchun Li, Charlyne Chassereau, Yan Huang, Maria Lopes-Virella
Immune complexes (IC) containing predominantly malondialdehyde-LDL and the corresponding autoantibodies (MDA-LDL IC) predict acute cardiovascular events, while IC rich in oxidized LDL (oxLDL IC) predict cardiovascular disease progression. Our objective was to determine mechanisms that could explain these prognostic differences. We compared the effects of the interaction of oxLDL, MDA-LDL and the corresponding IC with human macrophages focusing on apoptosis, metalloproteinases, and proinflammatory cytokines...
July 6, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28686117/predicting-ischemic-stroke-after-carotid-artery-stenting-based-on-proximal-calcification-and-the-jellyfish-sign
#3
Nobuhiko Ichinose, Seiji Hama, Toshio Tsuji, Zu Soh, Hideaki Hayashi, Yoshihiro Kiura, Shigeyuki Sakamoto, Takahito Okazaki, Daizo Ishii, Katsuhiro Shinagawa, Kaoru Kurisu
OBJECTIVE Carotid artery stenting (CAS) has been considered to prevent ischemic strokes caused by stenosis of the cervical carotid artery. The most common complication of CAS is new cerebral infarction. The authors have previously reported that the jellyfish sign-the rise and fall of the mobile component of the carotid plaque surface detected by carotid ultrasonography-suggests thinning and rupture of the fibrous cap over the unstable plaque content, such as the lipid-rich necrotic core or internal plaque hemorrhage...
July 7, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28685957/the-characteristics-of-carotid-atherosclerosis-in-elderly-patients-with-type-2-diabetes-at-different-disease-course-and-the-intervention-by-statins-in-the-very-elderly-patients
#4
Wenjun Chen, Tao Tian, Shiming Wang, Yan Xue, Zongqin Sun, Shuli Wang
INTRODUCTION: Chronic complications of diabetes have become the leading cause of death in elderly patients with diabetes. Carotid atherosclerosis, one of the major complications was evaluated and the effect of atorvastatin on carotid atherosclerosis in very elderly patients with type 2 diabetes (T2D) were observed. MATERIAL AND METHODS: Patients were divided into 3 groups: 1) disease course < 5 years; 2) disease course = 5-10 years; 3) disease course > 10 years, and carotid atherosclerosis were evaluated...
July 7, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28674321/incremental-prognostic-value-of-coronary-computed-tomography-angiography-high-risk-plaque-characteristics-in-asymptomatic-patients
#5
Kazuhisa Takamura, Shinichiro Fujimoto, Takeshi Kondo, Makoto Hiki, Yuko Kawaguchi, Etsuro Kato, Hiroyuki Daida
AIM: Coronary computed tomography angiography (CCTA) findings of positive remodeling (index >1.1) and low-attenuation plaque (<30 Hounsfield units) are recognized as CT-verified high-risk plaque (CT-HRP). Therefore, we investigated the incremental prognostic value of evaluation of plaque characteristics using CCTA in asymptomatic patients. METHODS: Overall, 495 consecutive patients without any known coronary artery disease who underwent CCTA were included in this study...
July 1, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28669698/the-curious-incident-of-spotty-calcium-in-unstable-atherosclerotic-plaque
#6
EDITORIAL
Gary S Mintz
No abstract text is available yet for this article.
May 25, 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28642174/elevated-scd40l-mmp-9-and-mmp-2-is-associated-with-carotid-plaque-vulnerability-in-patients-with-ischemic-cerebrovascular-disease
#7
Yipeng Han, Xiang Mao, Lijun Wang, Jiachun Liu, Daming Wang, Hongwei Cheng, Guozhuan Miao
OBJECTIVES: The objectives of this study were to examine the correlation between the level of serum inflammatory markers and the stability of carotid plaques in patients with ischemic cerebrovascular disease and to assess the ability of each inflammatory marker to identify vulnerable carotid plaques. METHODS: for the Early Identification of Vulnerable Carotid Plaques Sixty-five patients with carotid plaques were divided into a stable plaque group (n = 21) and an unstable plaque group (n = 44) according to MRI characteristics...
June 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28626148/prevalence-of-thin-cap-fibroatheroma-in-relation-to-the-severity-of-anatomical-and-physiological-stenosis
#8
Eisuke Usui, Taishi Yonetsu, Tadashi Murai, Yoshihisa Kanaji, Junji Matsuda, Masahiro Hoshino, Makoto Araki, Takayuki Niida, Masahiro Hada, Sadamitsu Ichijyo, Rikuta Hamaya, Yoshinori Kanno, Tetsumin Lee, Mitsuaki Isobe, Tsunekazu Kakuta
BACKGROUND: The relationship between the features of morphologically unstable plaque and physiological lesion severity remains elusive. We aimed to investigate this relationship using optical coherence tomography (OCT)-derived high-risk plaque characteristics and fractional flow reserve (FFR) as the degree of anatomical and physiological stenosis severity.Methods and Results:We investigated 286 de novo intermediate and severe coronary lesions in 248 patients who underwent OCT and FFR examinations...
June 16, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28617434/lispro-mitigates-%C3%AE-amyloid-and-associated-pathologies-in-alzheimer-s-mice
#9
Ahsan Habib, Darrell Sawmiller, Song Li, Yang Xiang, David Rongo, Jun Tian, Huayan Hou, Jin Zeng, Adam Smith, Shengnuo Fan, Brian Giunta, Takashi Mori, Glenn Currier, Douglas Ronald Shytle, Jun Tan
Lithium has been marketed in the United States of America since the 1970s as a treatment for bipolar disorder. More recently, studies have shown that lithium can improve cognitive decline associated with Alzheimer's disease (AD). However, the current United States Food and Drug Administration-approved lithium pharmaceutics (carbonate and citrate chemical forms) have a narrow therapeutic window and unstable pharmacokinetics that, without careful monitoring, can cause serious adverse effects. Here, we investigated the safety profile, pharmacokinetics, and therapeutic efficacy of LISPRO (ionic co-crystal of lithium salicylate and l-proline), lithium salicylate, and lithium carbonate (Li2CO3)...
June 15, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28615715/rnaseq-based-transcriptomics-study-of-smcs-from-carotid-atherosclerotic-plaque-bmp2-and-ids-proteins-are-crucial-regulators-of-plaque-stability
#10
Iraide Alloza, Haize Goikuria, Juan Luis Idro, Juan Carlos Triviño, José María Fernández Velasco, Elena Elizagaray, María García-Barcina, Genoveva Montoya-Murillo, Esther Sarasola, Reyes Vega Manrique, Maria Del Mar Freijo, Koen Vandenbroeck
Carotid artery atherosclerosis is a risk factor to develop cerebrovascular disease. Atheroma plaque can become instable and provoke a cerebrovascular event or else remain stable as asymptomatic type. The exact mechanism involved in plaque destabilization is not known but includes among other events smooth muscle cell (SMC) differentiation. The goal of this study was to perform thorough analysis of gene expression differences in SMCs isolated from carotid symptomatic versus asymptomatic plaques. Comparative transcriptomics analysis of SMCs based on RNAseq technology identified 67 significant differentially expressed genes and 143 significant differentially expressed isoforms in symptomatic SMCs compared with asymptomatic...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28615615/stat6-upregulation-promotes-m2-macrophage-polarization-to-suppress-atherosclerosis
#11
Min Gong, Xiaozhen Zhuo, Aiqun Ma
BACKGROUND Macrophages are highly heterogeneous and plastic cells that are involved in all stages of atherogenesis. They can undergo polarization by shifting between M1 and M2 functional phenotypes. However, the role of macrophage polarization and the molecular mechanism in modulating atherosclerotic plaque stability remain incompletely understood. Our study investigated the role of STAT6 in regulating macrophage phenotypes to affect atherosclerotic plaque stability. MATERIAL AND METHODS A murine atherosclerosis model with vulnerable plaques was induced with high-cholesterol diet and PCCP surgeries in ApoE-/- mice...
June 15, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28602632/brachial-ankle-pulse-wave-velocity-as-a-predictor-of-silent-cerebral-embolism-after-carotid-artery-stenting
#12
Tomoaki Murakami, Hajime Nakamura, Takeo Nishida, Tomohiko Ozaki, Katsunori Asai, Tomoki Kidani, Yoshinori Kadono, Manabu Sakaguchi, Toshiki Yoshimine, Haruhiko Kishima
BACKGROUND: In neuroendovascular therapy, the effect of arterial stiffness on postprocedural cerebral thromboembolism is unknown. In this observational study, we examined the relationship between cerebral thromboembolism after carotid artery stenting and arterial stiffness. METHODS: From April 2015 to February 2017, we enrolled consecutive patients undergoing scheduled carotid artery stenting in our institution. In all patients, preprocedural brachial-ankle pulse wave velocity was used to assess arterial stiffness, whereas the number of new cerebral ischemic lesions on diffusion-weighted magnetic resonance imaging was assessed after treatment...
June 8, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28601467/recurrent-acute-coronary-syndrome-and-mechanisms-of-plaque-instability
#13
Luca Di Vito, Giampaolo Niccoli, Italo Porto, Rocco Vergallo, Laura Gatto, Francesco Prati, Filippo Crea
Patients with an acute coronary syndrome (ACS) due to plaque rupture had a worse prognosis when compared with those without plaque rupture with a higher rate of target vessel revascularization and readmission for unstable angina, suggesting that both stent failure and disease progression occur more frequently. However, it is not known whether recurrent episodes of coronary instability in the same patient are caused by the same pathogenetic mechanism. Thus, we sought to investigate the mechanisms of coronary instability imaged by optical coherence tomography in patients with recurrent ACS events...
June 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28599905/potential-of-new-generation-double-layer-micromesh-stent-for-carotid-artery-stenting-in-patients-with-unstable-plaque-%C3%A2-a-preliminary-result-using-ofdi-analysis-%C3%A2
#14
Kiyofumi Yamada, Shinichi Yoshimura, Masatomo Miura, Takuya Kanamaru, Seigo Shindo, Kazutaka Uchida, Manabu Shirakawa, Masahiko Shibuya, Takahiro Imanaka, Masaharu Ishihara, Tohru Masuyama, Reiichi Ishikura, Masanori Kawasaki
BACKGROUND: One of the disadvantages of carotid artery stenting (CAS) is high incidence of distal embolism (DE) during or after the procedure. It has been reported that unstable plaque cases are at high risk of DE and plaque protrusion (PP) after stent placement which will become a cause of post procedural ischemic complications. OBJECTIVE: The purpose of this study was to compare the rate and size of PP between CASPER stent which is a new generation double-layer micromesh stent and conventional stents detected by optical frequency domain imaging (OFDI) and to evaluate the efficacy of CAS with CASPER stent for cases with unstable plaque...
June 6, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28594333/quantification-of-carotid-artery-plaque-stability-with-multiple-region-of-interest-based-ultrasound-strain-indices-and-relationship-with-cognition
#15
Nirvedh Meshram, Tomy Varghese, Carol Mitchell, Daren Jackson, Stephanie Wilbrand, Bruce Hermann, Robert Dempsey
Vulnerability and instability in carotid artery plaque has been assessed based on strain variations using noninvasive ultrasound imaging. We previously demonstrated that carotid plaques with higher strain indices in a region of interest (ROI) correlated to patients with lower cognition, probably due to cerebrovascular emboli arising from these unstable plaques. This work attempts to characterize the strain distribution throughout the entire plaque region instead of being restricted to a single localized ROI...
June 8, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28583314/characterization-of-high-intensity-plaques-on-noncontrast-t1-weighted-magnetic-resonance-imaging-by-coronary-angioscopy
#16
Akira Oshita, Hideo Kawakami, Toru Miyoshi, Fumiyasu Seike, Hiroshi Matsuoka
BACKGROUND: A recent study showed that coronary high-intensity plaques (HIPs) visualized by noncontrast T1-weighted imaging (T1WI) in cardiac magnetic resonance were associated with coronary events. We used coronary angioscopy to analyze HIP plaque morphology. METHODS AND RESULTS: A total 17 lesions from 17 patients with stable or unstable angina pectoris were evaluated at the culprit lesion by noncontrast T1WI using 1.5-T magnetic resonance; of them, nine (53%) were HIPs and eight (47%) were non-HIPs, and all were analyzed by coronary angioscopy...
June 2, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28575478/the-preservation-of-cognition-1-yr-after-carotid-endarterectomy-in-patients-with-prior-cognitive-decline
#17
Robert J Dempsey, Daren C Jackson, Stephanie M Wilbrand, Carol C Mitchell, Sara E Berman, Sterling C Johnson, Nirvedh H Meshram, Tomy Varghese, Bruce P Hermann
BACKGROUND: Vascular cognitive decline is critically important in the course of atherosclerosis and stroke. OBJECTIVE: To explore the hypothesis that carotid endarterectomy (CEA) by removing an unstable plaque may slow the course of vascular cognitive decline in both symptomatic and asymptomatic patients. METHODS: Patients with clinically significant (>60%) carotid stenosis were studied preop and 1 yr post-CEA for clinical symptoms, vascular cognitive decline, instability of carotid plaque-presence of microemboli, brain white matter changes, and medical risk factors...
June 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28560417/atheroprotective-effects-of-statins-in-patients-with-unstable-angina-by-regulating-the-blood-borne-microrna-network
#18
Sufang Li, Chengfu Cao, Hong Chen, Junxian Song, Chongyou Lee, Jing Zhang, Feng Zhang, Qiang Geng, Zheng Li, Jingjin Li
Experimental studies have demonstrated several effects of statins in acute coronary syndrome (ACS) that may extend their clinical benefit beyond the lipid profile modification itself. However, the precise underlying mechanism remains to be elucidated. microRNAs (miRNAs) serve significant roles in the pathophysiology of atherosclerotic plaque progression. The present study investigated the protective role of statins in patients with unstable angina (UA) by regulating the circulating miRNA network. miRNA array results demonstrated that there were 21 differentially expressed miRNAs in non‑statin‑treated patients with UA (n=8) compared with non‑coronary artery disease controls (n=8), and 33 differentially expressed miRNAs in statin‑treated patients with UA (n=8) compared with non‑statin patients...
July 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28559142/ag1296-enhances-plaque-stability-via-inhibiting-inflammatory-responses-and-decreasing-mmp-2-and-mmp-9-expression-in-apoe-mice
#19
Min Dong, Changping Zhou, Liang Ji, Bing Pan, Lemin Zheng
BACKGROUND: Atherosclerosis is a chronic process that progresses to unstable plaques. Plaque rupture leads to deleterious consequences such as acute coronary syndrome, thrombosis and stroke. AG1296 is a potent tyrosine kinase inhibitor which is able to block PDGF-PDGFR signaling pathway. This study aims to assess the effect of AG1296 on plaque stability and explore the potential mechanisms. METHODS: Atherosclerotic plaques were induced in carotid arteries in ApoE-/- mice by perivascular collar placement...
May 27, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28539300/-clinical-outcomes-of-intravascular-ultrasound-in-guiding-the-treatment-of-non-left-main-intermediate-coronary-lesions-for-patients-with-acute-coronary-syndrome
#20
Hong-Bin Liang, Qian Guo, Xin-Lu Zhang, Xue-Wei Liu, Yong-Zhen Tang, Wei-Yu Chen, Yu-Qing Hou, Jian-Cheng Xiu
OBJECTIVE: To evaluate the long-term clinical outcomes of intravascular ultrasound(IVUS) in guiding the treatment of non-left main intermediate coronary lesions for patients of acute coronary syndrome (ACS). METHODS: A total of 25 patients with intermediate coronary lesions(stenosis of 40%-70%) confirmed by coronary angiography were performed with IVUS. When MLA≥4 mm(2), we deferred the PCI treatment and performed optimal medical treatment (OMT). The patient were followed up for 12 month...
May 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
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