Read by QxMD icon Read

Vulnerable carotid plaque

Mikiya Beppu, Yohei Mineharu, Hirotoshi Imamura, Hidemitsu Adachi, Chiaki Sakai, Shoichi Tani, Koichi Arimura, So Tokunaga, Nobuyuki Sakai
BACKGROUND AND PURPOSE: Although in-stent protrusion is a potential risk factor of thromboembolism following carotid artery stenting, the correlation between in-stent protrusion and postoperative ipsilateral stroke has not been well examined. MATERIALS AND METHODS: We retrospectively reviewed 342 consecutive carotid artery lesions in 319 patients who underwent carotid artery stenting between April 2008 and April 2015. After excluding cases with carotid artery dissection and acute occlusion, 301 lesions in total of 277 patients were included in the analysis...
March 7, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Blerim Mujaj, Daniel Bos, Mariana Selwaness, Maarten J G Leening, Maryam Kavousi, Jolanda J Wentzel, Aad van der Lugt, Albert Hofman, Bruno H Stricker, Meike W Vernooij, Oscar H Franco
BACKGROUND: Statins represent a key treatment for cardiovascular disease. Nevertheless, the direct effects of statin treatment on the composition of atherosclerotic plaques remain elusive. OBJECTIVES: We aimed to investigate the association of statin treatment with the presence of different plaque components located in the carotid arteries within a population-based setting. METHODS: From the population-based Rotterdam Study, 1740 participants with carotid atherosclerosis (mean age 72...
March 5, 2018: International Journal of Cardiology
Yasuhiro Fujiwara, Hirotoshi Maruyama, Kanako Toyomaru, Yuri Nishizaka, Masahiro Fukamatsu
Magnetic resonance imaging (MRI) is widely used to detect carotid atherosclerotic plaques. Although it is important to evaluate vulnerable carotid plaques containing lipids and intra-plaque hemorrhages (IPHs) using T1 -weighted images, the image contrast changes depending on the imaging settings. Moreover, to distinguish between a thrombus and a hemorrhage, it is useful to evaluate the iron content of the plaque using both T1 -weighted and T2 *-weighted images. Therefore, a quantitative evaluation of carotid atherosclerotic plaques using T1 and T2 * values may be necessary for the accurate evaluation of plaque components...
March 6, 2018: Radiological Physics and Technology
Yoshiro Ito, Wataro Tsuruta, Yasunobu Nakai, Tomoji Takigawa, Aiki Marushima, Tomohiko Masumoto, Yuji Matsumaru, Eiichi Ishikawa, Akira Matsumura
Carotid endarterectomy (CEA) and carotid artery stenting (CAS) are not appropriate treatment procedure for internal carotid artery stenosis (ICAS) in some patients. The importance of plaque vulnerability and the treatment risk evaluation has been reported. We analyzed whether treatment selection contributes to the outcome. We retrospectively examined 121 patients who underwent CEA or CAS. Treatment was selected based on plaque vulnerability and the treatment risk evaluation. We selected CAS for patients with stable plaques and CEA for patients with unstable plaques, and considered the other treatment for high-risk patients...
March 3, 2018: Neurologia Medico-chirurgica
Hong Jin, Daniel Y Li, Ekaterina Chernogubova, Changyan Sun, Albert Busch, Suzanne M Eken, Peter Saliba-Gustafsson, Hanna Winter, Greg Winski, Uwe Raaz, Isabel N Schellinger, Nancy Simon, Renate Hegenloh, Ljubica Perisic Matic, Maja Jagodic, Ewa Ehrenborg, Jaroslav Pelisek, Hans-Henning Eckstein, Ulf Hedin, Alexandra Backlund, Lars Maegdefessel
miRNAs are potential regulators of carotid artery stenosis and concordant vulnerable atherosclerotic plaques. Hence, we analyzed miRNA expression in laser captured micro-dissected fibrous caps of either ruptured or stable plaques (n = 10 each), discovering that miR-21 was significantly downregulated in unstable lesions. To functionally evaluate miR-21 in plaque vulnerability, miR-21 and miR-21/apolipoprotein-E double-deficient mice (Apoe-/- miR-21-/- ) were assessed. miR-21-/- mice lacked sufficient smooth muscle cell proliferation in response to carotid ligation injury...
January 31, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
Wen-Jing Liang, Sheng-Nan Zhou, Mei-Rong Shan, Xue-Qin Wang, Miao Zhang, Yuan Chen, Yun Zhang, Shuang-Xi Wang, Tao Guo
Diabetes mellitus is one of risk factors of cardiovascular diseases including atherosclerosis. Whether and how diabetes promotes the formation of unstable atherosclerotic plaque is not fully understood. Here, we show that streptozotocin-induced type 1 diabetes reduced collagen synthesis, leading to the formation of unstable atherosclerotic plaque induced by collar placement around carotid in apolipoprotein E knockout (Apoe-/- ) mice. These detrimental effects of hyperglycemia on plaque stability were reversed by metformin in vivo without altering the levels of blood glucose and lipids...
March 3, 2018: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
Mohamed A Zayed, Fong-Fu Hsu, Bruce W Patterson, Yan Yan, Uzma Naim, Malik Darwesh, Gayan De Silva, Chao Yang, Clay F Semenkovich
Patients with diabetes are at higher risk of developing carotid artery stenosis and resultant stroke. Arachidonoyl phospholipids affect plaque inflammation and vulnerability, but whether diabetic patients have unique carotid artery phospholipidomic profiles is unknown. We performed a comprehensive paired analysis of phospholipids in extracranial carotid endarterectomy (CEA) plaques of matched diabetic and nondiabetic patients and analyzed mass spectrometry-derived profiles of three phospholipids - plasmenyl-phosphatidylethanolamine (pPE), phosphatidylserine (PS), and phosphatidylinositol (PI) - in minimally diseased (MIN) and maximally diseased (MAX) CEA segments...
February 24, 2018: Journal of Lipid Research
Miloslav Spacek, David Zemanek, Martin Hutyra, Martin Sluka, Milos Taborsky
Atherosclerosis is the most common cause of both carotid and coronary steno-occlusive disease. Rupture of an atherosclerotic plaque may lead to the formation of an overlying thrombosis resulting in complete arterial occlusion or downstream embolism. Clinically, this may manifest as a stroke or acute myocardial infarction, the overall leading causes of mortality and disability in developed countries. In this article, we summarize current concepts of the development of vulnerable plaque and provide an overview of commonly used imaging methods that may suggest/indicate atherosclerotic plaque vulnerability...
February 21, 2018: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
Meiko Hoshino, Hideki Kawai, Masayoshi Sarai, Akiyo Sadato, Motoharu Hayakawa, Sadako Motoyama, Yasuomi Nagahara, Keiichi Miyajima, Hiroshi Takahashi, Junnichi Ishii, Ichiro Nakahara, Yuichi Hirose, Yukio Ozaki
AIMS: Coronary artery atherosclerosis in patients needing carotid revascularization has not been fully clarified. The aim of this study was to evaluate the stenotic severity and plaque characteristics of coronary arteries by coronary computed tomography angiography (CTA) in patients scheduled for carotid-artery stenting (CAS) or carotid endarterectomy (CEA). METHODS: We performed coronary CTA after carotid ultrasound (US) in 164 patients (81.7% male, aged 68.1±12...
February 16, 2018: Journal of Atherosclerosis and Thrombosis
Craig C Weinkauf, Kirsten Concha-Moore, Jonathan R Lindner, Edmund R Marinelli, Kyle P Hadinger, Sandipan Bhattacharjee, Scott S Berman, Kay Goshima, Luis R Leon, Terry O Matsunaga, Evan Unger
BACKGROUND: Molecular imaging of carotid plaque vulnerability to atheroembolic events is likely to lead to improvements in selection of patients for carotid endarterectomy (CEA). The aims of this study were to assess the relative value of endothelial inflammatory markers for this application and to develop molecular ultrasound contrast agents for their imaging. METHODS: Human CEA specimens were obtained prospectively from asymptomatic (30) and symptomatic (30) patients...
February 13, 2018: Journal of Vascular Surgery
Wei Hu, Rui Wei, Liyue Wang, Jingqian Lu, Hongming Liu, Wei Zhang
We analyzed the effects of matrix metalloproteinase (MMP)-1, MMP-3, and MMP-12 on the degree of carotid atherosclerosis (CAS) and plaque stability, and investigated their correlations with cardiovascular and cerebrovascular events (CCEs). Two hundred CAS patients were enrolled. Carotid intima-media thickness (IMT) was measured using ultrasonic examination. Patients were divided into the no plaque group (NP group), stable plaque group (SP group), and vulnerable plaque group (VP group). The Crouse method was used for the evaluation of plaque scores...
February 2018: Experimental and Therapeutic Medicine
Francesco Moroni, Marco Magnoni, Vittoria Vergani, Enrico Ammirati, Paolo G Camici
BACKGROUND AND AIMS: Plaque border irregularity is a known imaging characteristic of vulnerable plaques, but its evaluation heavily relies on subjective evaluation and operator expertise. Aim of the present work is to propose a novel fractal-analysis based method for the quantification of atherosclerotic plaque border irregularity and assess its relation with cardiovascular risk factors. METHODS AND RESULTS: Forty-two asymptomatic subjects with carotid stenosis underwent ultrasound evaluation and assessment of cardiovascular risk factors...
2018: PloS One
Uwe Rauch, Eva Bengtsson, Isabel Gonçalves, Anna Hultgårdh-Nilsson
The clinical consequences of arterial atherosclerotic lesions depend, apart from their size, on their composition of cellular and extracellular components. While an intact endothelium at the interface of atherosclerotic plaques towards the blood can prevent its erosion, underlying smooth muscle cells within the plaque can reduce the risk of plaque ruptures, due to the deposition of stabilizing extracellular matrix. Basement membranes underlay and support the function of endothelial cells, and embed smooth muscle cells in the media, the source of most smooth muscle cells within atherosclerotic plaques...
February 6, 2018: Histology and Histopathology
Naoto Katakami, Tomoya Mita, Yoko Irie, Mitsuyoshi Takahara, Taka-Aki Matsuoka, Masahiko Gosho, Hirotaka Watada, Iichiro Shimomura
BACKGROUND: Ultrasonic gray-scale median (GSM) of the carotid wall reflects its composition and low-GSM carotid plaque is considered to be vulnerable. This study aimed to evaluate the effect of sitagliptin, a dipeptidyl peptidase-4 inhibitor, on the longitudinal change in GSM, an index of the tissue characteristics of the carotid wall, in patients with type 2 diabetes mellitus (T2DM). METHODS: This is a post hoc sub-analysis using data obtained from the SPIKE trial, a randomized controlled trial that demonstrated the beneficial effect of sitagliptin on the progression of carotid intima-media thickness in patients with T2DM...
February 5, 2018: Cardiovascular Diabetology
Jing Shang, Wen Wang, Jun Feng, Guo-Gang Luo, Ying Dang, Jian Sun, Yan-Qiu Yang, Li-Tao Ruan
Objective: To ascertain the feasibility of using shear wave velocity (SWV) in assessing the stiffness of carotid plaque by supersonic shear imaging (SSI) and explore preliminary clinical value for such evaluation. Materials and Methods: Supersonic shear imaging was performed in 142 patients with ischemic stroke, including 76 males and 66 females with mean age of 66 years (range, 45-80 years). The maximum, minimum, and mean values of SWV were measured for 129 carotid plaques...
January 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
Rodrigo A Fraga-Silva, Hugo Seeman, Fabrizio Montecucco, Analina R da Silva, Fabienne Burger, Fabiana P Costa-Fraga, Léa Anguenot, François Mach, Robson A S Dos Santos, Nikolaos Stergiopulos, Rafaela F da Silva
BACKGROUND: Apelin is an endogenous peptidergic system which modulates cardiovascular function. Recent studies pointed out a fundamental contribution of apelin on atherosclerosis development; however, such reports revealed contradictory data, and to date, it is difficult to accurately define a beneficial or deleterious role. To better understand apelin function on atherosclerosis, we aimed to investigate apelin-13 treatment effects on atherosclerotic plaques composition. DESIGN: Apolipoprotein E gene-deleted mice were fed on Western-type diet for 11 weeks...
March 2018: European Journal of Clinical Investigation
L Saba, C Yuan, T S Hatsukami, N Balu, Y Qiao, J K DeMarco, T Saam, A R Moody, D Li, C C Matouk, M H Johnson, H R Jäger, M Mossa-Basha, M E Kooi, Z Fan, D Saloner, M Wintermark, D J Mikulis, B A Wasserman
Identification of carotid artery atherosclerosis is conventionally based on measurements of luminal stenosis and surface irregularities using in vivo imaging techniques including sonography, CT and MR angiography, and digital subtraction angiography. However, histopathologic studies demonstrate considerable differences between plaques with identical degrees of stenosis and indicate that certain plaque features are associated with increased risk for ischemic events. The ability to look beyond the lumen using highly developed vessel wall imaging methods to identify plaque vulnerable to disruption has prompted an active debate as to whether a paradigm shift is needed to move away from relying on measurements of luminal stenosis for gauging the risk of ischemic injury...
February 2018: AJNR. American Journal of Neuroradiology
Federico Carbone, Fabio Rigamonti, Fabienne Burger, Aline Roth, Maria Bertolotto, Giovanni Spinella, Bianca Pane, Domenico Palombo, Aldo Pende, Aldo Bonaventura, Luca Liberale, Alessandra Vecchié, Franco Dallegri, François Mach, Fabrizio Montecucco
BACKGROUND: Inflammatory mediators in the blood stream and within plaques are key determinants in atherogenesis. Here, we investigated serum osteopontin (OPN) as a potential predictor of poor outcome in patients with severe carotid atherosclerosis. METHODS: Carotid plaques and serum were collected from patients asymptomatic (n=185) or symptomatic (n=40) for ischemic stroke. Plaques were stained for lipids, smooth muscle cells, neutrophils, M1 and M2 macrophage subsets and matrix metallopropteinase-9 (MMP-9)...
January 5, 2018: International Journal of Cardiology
Eirini Karamariti, Chungang Zhai, Baoqi Yu, Qiao Lei, Zhihong Wang, Claire M F Potter, Mei Mei Wong, Russell M L Simpson, Zhongyi Zhang, Xiaocong Wang, Ivan Del Barco Barrantes, Christof Niehrs, Deling Kong, Qiang Zhao, Yun Zhang, Yanhua Hu, Cheng Zhang, Qingbo Xu
OBJECTIVES: DKK3 (dickkopf 3), a 36-kD secreted glycoprotein, has been shown to be involved in the differentiation of partially reprogrammed cells and embryonic stem cells to smooth muscle cells (SMCs), but little is known about its involvement in vascular disease. This study aims to assess the effects of DKK3 on atherosclerotic plaque composition. APPROACH AND RESULTS: In the present study, we used a murine model of atherosclerosis (ApoE-/-) in conjunction with DKK3-/- and performed tandem stenosis of the carotid artery to evaluate atherosclerotic plaque development...
December 28, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
Hadi Mahmoud Haider Diab, Lars Melholt Rasmussen, Stevo Duvnjak, Axel Diederichsen, Pia Søndergaard Jensen, Jes Sanddal Lindholt
BACKGROUND: Primary to validate a commercial semi-automated computed tomography angiography (CTA) -software for vulnerable plaque detection compared to histology of carotid endarterectomy (CEA) specimens and secondary validating calcifications scores by in vivo CTA with ex vivo non-contrast enhanced computed tomography (NCCT). METHODS: From January 2014 to October 2016 53 patients were included retrospectively, using a cross-sectional design. All patients underwent both CTA and CEA...
December 13, 2017: BMC Medical Imaging
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"