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https://www.readbyqxmd.com/read/28527710/ccn3-regulates-macrophage-foam-cell-formation-and-atherosclerosis
#1
Hong Shi, Chao Zhang, Vinay Pasupuleti, Xingjian Hu, Domenick A Prosdocimo, Wenconghui Wu, Yulan Qing, Shitong Wu, Haneen Mohammad, Stanton L Gerson, Bernard Perbal, Philip A Klenotic, Nianguo Dong, Zhiyong Lin
Recent studies implicate the Cyr61, CTGF, Nov (CCN) matricellular signaling protein family as emerging players in vascular biology, with NOV (alias CCN3) as an important regulator of vascular homeostasis. Herein, we examined the role of CCN3 in the pathogenesis of atherosclerosis. In response to a 15-week high-fat diet feeding, CCN3-deficient mice on the atherosclerosis-prone Apoe(-/-) background developed increased aortic lipid-rich plaques compared to control Apoe(-/-) mice, a result that was observed in the absence of alterations in plasma lipid content...
June 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28526884/combined-use-of-metformin-and-atorvastatin-attenuates-atherosclerosis-in-rabbits-fed-a-high-cholesterol-diet
#2
Fei Luo, Yuan Guo, Gui-Yun Ruan, Jun-Ke Long, Xi-Long Zheng, Qin Xia, Shui-Ping Zhao, Dao-Quan Peng, Zhen-Fei Fang, Xiang-Ping Li
Statins are widely used to reduce cardiovascular risk. Unfortunately, some patients still experience cardiovascular events though prescribed with high-intensity statins. Metformin, an anti-diabetic drug, was reported to possess anti-atherosclerotic effects. Therefore, the experiments were designed to evaluate whether combined use of metformin and atorvastatin can achieve additional benefits. In rabbits fed a high-cholesterol diet, we evaluated the effects of the combination therapy on atherosclerotic plaques, lipid profiles, blood glucose levels, liver and kidney functions...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28525971/left-ventricular-mural-thrombus-and-dual-coronary-embolization-associated-with-hyperthyroid-cardiomyopathy-and-atrial-fibrillation-a-case-report
#3
Guohui Liu, Ping Yang, Yuquan He
BACKGROUND: The majority of acute myocardial infarction (AMI) events are caused by thrombotic occlusion of the coronary artery, secondary to atherosclerotic plaque erosion or rupture. However, coronary embolism (CE), while rare, is being increasingly recognized as an important cause of AMI. We present the case of a patient with multi-site coronary artery embolization associated with hyperthyroid-related cardiomyopathy and atrial fibrillation. CASE PRESENTATION: A 49-year-old female with a history of hyperthyroidism and atrial fibrillation (AF) was admitted to our hospital presenting with right upper limb pain and swelling...
May 19, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28525946/ghrelin-attenuates-vascular-calcification-in-diabetic-patients-with-amputation
#4
Suining Xu, Fei Ye, Lihua Li, Jinchuan Yan, Zhengyang Bao, Zhen Sun, Liangjie Xu, Jie Zhu, Zhongqun Wang
Vascular calcification is established to be a critical factor in diabetes mellitus, which causes cardiovascular and amputation complication of diabetic patients. OPG/RANKL/RANK axis serves as a regulatory role in vascular calcification. Ghrelin, an endogenous ligand of growth hormone secretagogue receptor (GHSR), has been reported to exhibit potent cardiovascular protective effects. However, the role of ghrelin in the regulation of diabetic vascular calcification is still elusive. Here, we reported the role of ghrelin and its relationship with OPG/RANKL/RANK system in patients with diabetic foot amputation...
May 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28523582/first-in-human-radiation-dosimetry-of-68-ga-nodaga-rgdyk
#5
Silvano Gnesin, Periklis Mitsakis, Francesco Cicone, Emmanuel Deshayes, Vincent Dunet, Augusto F Gallino, Marek Kosinski, Sébastien Baechler, Franz Buchegger, David Viertl, John O Prior
BACKGROUND: Integrin-targeting radiopharmaceuticals have potential broad applications, spanning from cancer theranostics to cardiovascular diseases. We have previously reported preclinical dosimetry results of (68)Ga-NODAGA-RGDyK in mice. This study presents the first human dosimetry of (68)Ga-NODAGA-RGDyK in the five consecutive patients included in a clinical imaging protocol of carotid atherosclerotic plaques. Five male patients underwent whole-body time-of-flight (TOF) PET/CT scans 10, 60 and 120 min after tracer injection (200 MBq)...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28522312/intravascular-imaging-in-cardiovascular-ageing
#6
REVIEW
Christos V Bourantas, Tom Crake, Yao-Jun Zhang, Mick Ozkor, Javed Ahmed, Hector M Garcia-Garcia, Patrick W Serruys
Ageing is related to complex molecular, inflammatory and biochemical changes that affect coronary pathology and often lead to coronary artery disease and cardiovascular events. Intravascular imaging is considered as the ideal technique to study coronary plaque morphology and assess its burden. Over the recent years several studies have been performed that investigated the association between pathophysiological mechanisms that promote vascular ageing and plaque morphology. In addition, several reports have compared plaque pathology in different age groups and a few studies included serial intravascular imaging to assess changes in the atheroma burden and compositional characteristics of the plaque...
May 15, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28522147/cardiovascular-risk-in-advanced-na%C3%A3-ve-hiv-infected-patients-starting-antiretroviral-therapy-comparison-of-three-different-regimens-prevaleat-ii-cohort
#7
Paolo Maggi, Chiara Bellacosa, Armando Leone, Anna Volpe, Elena Delfina Ricci, Nicoletta Ladisa, Stefania Cicalini, Elisabetta Grilli, Rosaria Viglietti, Antonio Chirianni, Lara Ines Bellazzi, Renato Maserati, Canio Martinelli, Paola Corsi, Benedetto Maurizio Celesia, Federica Sozio, Gioacchino Angarano
BACKGROUND AND AIMS: PREVALEAT (PREmature VAscular LEsions and Antiretroviral Therapy) II is a multicenter, longitudinal cohort study aimed at the evaluation of cardiovascular risk among advanced HIV-positive, treatment-naïve patients starting their first therapy. We hypothesized that these patients, present a higher cardiovascular (CV) risk. METHODS: The study included all consecutive naïve patients with less than 200 CD4 cells/ml starting antiretroviral therapy...
May 5, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28515742/the-use-of-intraoperative-epiaortic-ultrasonography-in-monitoring-patients-over-75-years-old-treated-with-aortic-valve-replacement
#8
Tomasz Niklewski, Michał Zembala, Dariusz Puszczewicz, Paweł Nadziakiewicz, Wojciech Karolak, Marian Zembala
INTRODUCTION: Epiaortic ultrasound scanning (EAS) extended the use of ultrasound to the intraoperative diagnosis of aortic pathology. Surgical palpation of the ascending aorta underestimates the presence and severity of atherosclerotic plaques. Epiaortic ultrasound scanning has been used as an adjunct to transesophageal echocardiography (TEE) or as a primary direct diagnostic tool for imaging the ascending aorta as well as the aortic arch, which gained prominence as part of a multipronged intraoperative strategy to reduce atherosclerotic emboli...
March 2017: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28514340/-the-impact-of-surgical-and-conservative-treatment-of-periodontal-disease-on-structural-and-functional-condition-of-major-blood-vessels
#9
A I Grudyanov, O N Tkacheva, A T Khatagov
The study included 55 patients (24 men and 31 women aged 30-70 years) with chronic periodontal disease and atherosclerosis of brachiocephalic arteries (BCA). Patients in group 1 received only conservative treatment for periodontal disease, while in group 2 both conservative and surgical treatment were performed. The values were evaluated at baseline and 6 months after treatment. Capillaroscopy and laser Doppler flowmetry showed an improvement in periodontal regional vascular network. The level of IL-6 decreased by 3...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28513806/increased-activity-of-vascular-adenosine-deaminase-in-atherosclerosis-and-therapeutic-potential-of-its-inhibition
#10
Barbara Kutryb-Zajac, Lukasz Mateuszuk, Paulina Zukowska, Agnieszka Jasztal, Magdalena A Zabielska, Marta Toczek, Patrycja Jablonska, Agnieszka Zakrzewska, Barbara Sitek, Jan Rogowski, Romuald Lango, Ewa M Slominska, Stefan Chlopicki, Ryszard T Smolenski
Aims: Extracellular nucleotides and adenosine that are formed or degraded by membrane-bound ecto-enzymes could affect atherosclerosis by regulating the inflammation and thrombosis. This study aimed to evaluate a relation between ecto-enzymes that convert extracellular adenosine triphosphate to adenine dinucleotide phosphate, adenosine monophosphate, adenosine, and inosine on the surface of the vessel wall with the severity or progression of experimental and clinical atherosclerosis. Furthermore, we tested whether the inhibition of adenosine deaminase will block the development of experimental atherosclerosis...
November 1, 2016: Cardiovascular Research
https://www.readbyqxmd.com/read/28513618/age-increases-monocyte-adhesion-on-collagen
#11
Samira Khalaji, Lisa Zondler, Fenneke KleinJan, Ulla Nolte, Medhanie A Mulaw, Karin M Danzer, Jochen H Weishaupt, Kay-E Gottschalk
Adhesion of monocytes to micro-injuries on arterial walls is an important early step in the occurrence and development of degenerative atherosclerotic lesions. At these injuries, collagen is exposed to the blood stream. We are interested whether age influences monocyte adhesion to collagen under flow, and hence influences the susceptibility to arteriosclerotic lesions. Therefore, we studied adhesion and rolling of human peripheral blood monocytes from old and young individuals on collagen type I coated surface under shear flow...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28513228/relationship-between-chop-gadd153-and-unstable-human-carotid-atherosclerotic-plaque
#12
Suping Wang, Meiyan Zhang, Zanhua Liu, Wuyang Yang, Junwei Shi, Victor Dean, Dong Chen
BACKGROUND AND AIMS: The signaling protein C/EBP homologous protein (CHOP) and corresponding growth-arrest-and-DNA-damage-inducible gene 153 (GADD153) is associated with endoplasmic reticulum stress (ERS), which can lead to apoptosis. Our study aims to elucidate the role of CHOP/GADD153 in unstable atherosclerotic (AS) plaque formation isolated from confounding factors such as diabetes mellitus, primary hyperlipidemia, autoimmune deficiencies/abnormalities, essential hypertension, chronic heart failure, chronic kidney disease, and smoking...
May 17, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28507169/human-neutrophil-elastase-induces-endothelial-cell-apoptosis-by-activating-the-perk-chop-branch-of-the-unfolded-protein-response
#13
Irina Grechowa, Sven Horke, Anja Wallrath, Christian-Friedrich Vahl, Bernhard Dorweiler
Human neutrophil elastase impacts on atherosclerotic plaque stability by inducing apoptosis in endothelial cells. Our aim was to investigate the proapoptotic mechanism of elastase on endothelial cells and to evaluate the presence of elastase in human plaque material. Human endothelial cells were treated with purified human neutrophil elastase. Apoptosis was assayed by capsase-3/7 activation, TUNEL, and sub-G1 assay. Activation of unfolded protein response (UPR) effector molecules binding Ig protein, soluble X-binding protein-1, protein kinase RNA-like ER kinase (PERK), and C/EBP-homologous protein (CHOP) was analyzed by RT-PCR, immunocytochemistry, and Western blot...
May 15, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28504688/accelerated-atherosclerosis-development-in-c57bl6-mice-by-overexpressing-aav-mediated-pcsk9-and-partial-carotid-ligation
#14
Sandeep Kumar, Dong-Won Kang, Amir Rezvan, Hanjoong Jo
Studying the role of a particular gene in atherosclerosis typically requires a time-consuming and often difficult process of generating double knockouts or transgenics on ApoE(-/-) or LDL receptor (LDLR)(-/-) background. Recently, it was reported that adeno-associated-virus-8 (AAV8)-mediated overexpression of PCSK9 (AAV8-PCSK9) rapidly induced hyperlipidemia. However, using this method in C57BL6 wild-type (C57) mice, it took ~3 months to develop atherosclerosis. Our partial carotid ligation model is used to rapidly develop atherosclerosis by inducing disturbed flow in the left common carotid artery within 2 weeks in ApoE(-/-) or LDLR(-/-) mice...
May 15, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28500865/dihydromyricetin-ameliorates-atherosclerosis-in-ldl-receptor-deficient-mice
#15
Ting Ting Liu, Yi Zeng, Kun Tang, XueMeng Chen, Wei Zhang, Xiao Le Xu
BACKGROUND AND AIMS: Dihydromyricetin, the most abundant flavonoid in Ampelopsis grossedentata, exerts numerous pharmacological activities, including anti-inflammatory, antioxidant, hepatoprotective, and lipid regulatory activities; however, its protective effect against atherosclerosis remains poorly understood. The aim of the present study was to evaluate the effects of dihydromyricetin on high fat diet (HFD)-induced atherosclerosis using LDL receptor deficient (LDLr(-/-)) mice. METHODS: Blood samples were collected for determination of serum lipid profiles, oxidized LDL (ox-LDL) and pro-inflammatory cytokines...
May 5, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28500539/hybrid-pet-ct-and-pet-mri-imaging-of-vulnerable-coronary-plaque-and-myocardial-scar-tissue-in-acute-myocardial-infarction
#16
Stephanie Marchesseau, Aruni Seneviratna, A Therese Sjöholm, Daphne Liang Qin, Jamie X M Ho, Derek J Hausenloy, David W Townsend, A Mark Richards, John J Totman, Mark Y Y Chan
BACKGROUND: Following an acute coronary syndrome, combined CT and PET with (18)F-NaF can identify coronary atherosclerotic plaques that have ruptured or eroded. However, the processes behind (18)F-NaF uptake in vulnerable plaques remain unclear. METHODS AND RESULTS: Ten patients with STEMI were scanned after (18)F-NaF injection, for 75 minutes in a Siemens PET/MR scanner using delayed enhancement (LGE). They were then scanned in a Siemens PET/CT scanner for 10 minutes...
May 12, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28500378/intravascular-ultrasound-elastography-analysis-of-the-elastic-mechanical-properties-of-atherosclerotic-plaque
#17
Zhaohuan Li, Lin Wang, Xiaobo Hu, Pengfei Zhang, Yifei Chen, Xinxin Liu, Mingjun Xu, Haijun Su, Mei Zhang
To assess the elastic mechanical properties of atherosclerotic plaque with different morphological properties by intravascular ultrasound elastography (IVUSE). 30 purebred New Zealand rabbits were fed a high-cholesterol diet; the abdominal aorta endothelium was balloon-injured after 2 weeks; at week 12, 2 plaques with moderate echo from each rabbit were chosen for in situ imaging, and 2 consecutive frames near the end-diastole images in situ were used to construct an IVUS elastogram. Shear strain (SS) and area strain (AS) were greater for eccentric than centripetal plaque (SS: 2...
May 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28496416/lysophosphatidic-acid-is-associated-with-atherosclerotic-plaque-instability-by-regulating-nf-%C3%AE%C2%BAb-dependent-matrix-metalloproteinase-9-expression-via-lpa2-in-macrophages
#18
Chun Gu, Fang Wang, Zhenwen Zhao, Hongyue Wang, Xiangfeng Cong, Xi Chen
Lysophosphatidic acid (LPA), one of the simplest phospholipid signaling molecules, participates in formation and disruption of atherosclerotic plaque. Matrix metalloproteinases (MMPs) contribute to atherosclerotic plaque rupture by involving in extracellular matrix (ECM) degradation and then thinning fibrous cap. Our previous study demonstrated that macrophage-derived MMP-9 was associated with coronary plaque instability, but the relationship between LPA and MMP-9 remains unclear. The present work therefore aimed at elucidating association between LPA and MMP-9 and the regulation mechanism of LPA on MMP-9 in macrophages...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28490621/plasma-7-ketocholesterol-levels-and-the-risk-of-incident-cardiovascular-events
#19
Min Wang, Weiqing Long, Di Li, Duan Wang, Yuan Zhong, Di Mu, Jiayi Song, Min Xia
OBJECTIVE: 7-Ketocholesterol (7-KC), a major oxidation product of cholesterol, is found in human atherosclerotic plaque and more atherogenic than cholesterol in animal models. This study was designed to investigate the association of plasma 7-KC level with the incident cardiovascular disease (CVD) events in general population. METHODS: We measured plasma 7-KC concentrations at baseline in 1944 participants free from CVD in a community-based cohort study. The primary endpoint was incident of a major adverse cardiovascular event...
May 10, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28488811/resolution-of-occlusive-carotid-artery-thrombus-treated-with-anticoagulation-as-demonstrated-on-duplex-ultrasonography
#20
Laura Stein, John W Liang, Jesse Weinberger
BACKGROUND AND PURPOSE: While the majority of cerebral ischemic events due to carotid occlusive disease result from atherosclerotic plaque rupture, intraluminal carotid artery thrombus occasionally occurs in patients without preexisting carotid atherosclerosis. Identification of nonatherosclerotic thrombus as the cause of the carotid occlusive disease can obviate the need for an interventional procedure, and resolution of thrombus can be monitored with B-mode duplex ultrasonography. METHODS: We reviewed 3 patients treated on The Mount Sinai Hospital Stroke Unit with anticoagulation for nonatherosclerotic carotid thrombi and followed with serial Doppler ultrasonogrpahy for resolution of thrombus...
May 10, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
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