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Liu Q, Zhuang W, Chen J, Li S, Li C, Ma D, Chen M. A turn-on fluorescent probe for lipid-targeting imaging in human arterial aneurysm and fibrocalcific stenotic aortic valve. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123030. [PMID: 37354855 DOI: 10.1016/j.saa.2023.123030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 06/08/2023] [Accepted: 06/14/2023] [Indexed: 06/26/2023]
Abstract
Fluorescence imaging techniques have shown remarkable performance in studying the biological functions of lipid droplets (LDs). However, the biological applications of the commercially available LDs probes suffer from insufficient specificity and low signal/noise ratio (SNR). Herein, we presented a novel near-infrared (NIR) lipid activatable fluorescence probe, namely Me2NND, with extremely low emission in water but significantly enhanced emission in the lipid environment. Me2NND presented good biocompatibility and impressive LDs-specific imaging ability in cells and tissues. Moreover, Me2NND has also shown good photostability and it could efficiently locate the distribution of LDs in human pathological samples of aortic aneurysms and fibrocalcific stenotic aortic valves. This study provided a novel turn-on probe Me2NND and would improve the bio-applications of LDs-specific probes.
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Affiliation(s)
- Qi Liu
- Laboratory of Heart Valve Disease and Department of Cardiology, West China Hospital, Sichuan University, #37 Guoxue Alley, Chengdu 610041, China
| | - Weihua Zhuang
- Laboratory of Heart Valve Disease and Department of Cardiology, West China Hospital, Sichuan University, #37 Guoxue Alley, Chengdu 610041, China.
| | - Jingruo Chen
- Laboratory of Heart Valve Disease and Department of Cardiology, West China Hospital, Sichuan University, #37 Guoxue Alley, Chengdu 610041, China
| | - Shufen Li
- Laboratory of Heart Valve Disease and Department of Cardiology, West China Hospital, Sichuan University, #37 Guoxue Alley, Chengdu 610041, China
| | - Chengming Li
- Laboratory of Heart Valve Disease and Department of Cardiology, West China Hospital, Sichuan University, #37 Guoxue Alley, Chengdu 610041, China
| | - Di Ma
- Laboratory of Heart Valve Disease and Department of Cardiology, West China Hospital, Sichuan University, #37 Guoxue Alley, Chengdu 610041, China
| | - Mao Chen
- Laboratory of Heart Valve Disease and Department of Cardiology, West China Hospital, Sichuan University, #37 Guoxue Alley, Chengdu 610041, China.
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Liu Y, Abbasi M, Arturo Larco JL, Kadirvel R, Kallmes DF, Brinjikji W, Savastano L. Preclinical testing platforms for mechanical thrombectomy in stroke: a review on phantoms, in-vivo animal, and cadaveric models. J Neurointerv Surg 2021; 13:816-822. [PMID: 33722966 PMCID: PMC8364863 DOI: 10.1136/neurintsurg-2020-017133] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 11/03/2022]
Abstract
Preclinical testing platforms have been instrumental in the research and development of thrombectomy devices. However, there is no single model which fully captures the complexity of cerebrovascular anatomy, physiology, and the dynamic artery-clot-device interaction. This article provides a critical review of phantoms, in-vivo animal, and human cadaveric models used for thrombectomy testing and provides insights into the strengths and limitations of each platform. Articles published in the past 10 years that reported thrombectomy testing platforms were identified. Characteristics of each test platform, such as intracranial anatomy, artery tortuosity, vessel friction, flow conditions, device-vessel interaction, and visualization, were captured and benchmarked against human cerebral vessels involved in large-vessel occlusion stroke. Thrombectomy phantoms have been constructed from silicone, direct 3D-printed polymers, and glass. These phantoms represent oversimplified patient-specific cerebrovascular geometry but enable adequate visualization of devices and clots under appropriate flow conditions. They do not realistically mimic the artery-clot interaction. For the animal models, arteries from swine, canines, and rabbits have been reported. These models can reasonably replicate the artery-clot-device interaction and have the unique value of evaluating the safety of thrombectomy devices. However, the vasculature geometries are substantially less complex and flow conditions are different from human cerebral arteries. Cadaveric models are the most accurate vascular representations but with limited access and challenges in reproducibility of testing conditions. Multiple test platforms should be likely used for comprehensive evaluation of thrombectomy devices. Interpretation of the testing results should take into consideration platform-specific limitations.
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Affiliation(s)
- Yang Liu
- Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Mehdi Abbasi
- Radiology, Mayo Clinic, Rochester, Minnesota, USA
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Rowland E, Bailey E, Weinberg P. Estimating Arterial Cyclic Strain from the Spacing of Endothelial Nuclei. EXPERIMENTAL MECHANICS 2021; 61:171-190. [PMID: 33510542 PMCID: PMC7116634 DOI: 10.1007/s11340-020-00655-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
BACKGROUND The non-uniform distribution of atherosclerosis within the arterial system is widely attributed to variation in haemodynamic wall shear stress. It may also depend on variation in pressure-induced stresses and strains within the arterial wall; these have been less widely investigated, at least in part because of a lack of suitable techniques. OBJECTIVES Here we show that local arterial strain can be determined from impressions left by endothelial cells on the surface of vascular corrosion casts made at different pressures, even though only one pressure can be examined in each vessel. The pattern of pits in the cast caused by protruding endothelial nuclei was subject to "retro-deformation" to identify the pattern that would have occurred in the absence of applied stresses. METHODS Retaining the nearest-neighbour pairs found under this condition, changes in nearest-neighbour vectors were calculated for the pattern seen in the cast, and the ratio of mean changes at different pressures determined. This approach removes errors in simple nearest-neighbour analyses caused by the nearest neighbour changing as deformation occurs. RESULTS The accuracy, precision and robustness of the approach were validated using simulations. The method was implemented using confocal microscopy of casts of the rabbit aorta made at systolic and diastolic pressures; results agreed well with the ratio of the macroscopic dimensions of the casts. CONCLUSIONS Applying the new technique to areas around arterial branches could support or refute the hypothesis that the development of atherosclerosis is influenced by mural strain, and the method may be applicable to other tissues.
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Affiliation(s)
- E.M. Rowland
- Department of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - E.L. Bailey
- Department of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
| | - P.D. Weinberg
- Department of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK
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Talib J, Hains PG, Tumanov S, Hodson MP, Robinson PJ, Stocker R. Barocycler-Based Concurrent Multiomics Method To Assess Molecular Changes Associated with Atherosclerosis Using Small Amounts of Arterial Tissue from a Single Mouse. Anal Chem 2019; 91:12670-12679. [PMID: 31509387 DOI: 10.1021/acs.analchem.9b01842] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Atherosclerosis is a complex, multifactorial disease characterized by the buildup of plaque in the arterial wall. Apolipoprotein E gene deficient (Apoe-/-) mice serve as a commonly used tool to elucidate the pathophysiology of atherosclerosis because of their propensity to spontaneously develop arterial lesions. To date, however, an integrated omics assessment of atherosclerotic lesions in individual Apoe-/- mice has been challenging because of the small amount of diseased and nondiseased tissue available. To address this current limitation, we developed a multiomics method (Multi-ABLE) based on the proteomic method called accelerated Barocycler lysis and extraction (ABLE) to assess the depth of information that can be obtained from arterial tissue derived from a single mouse by splitting ABLE to allow for a combined proteomics-metabolomics-lipidomics analysis (Multi-ABLE). The new method includes tissue lysis via pressure cycling technology (PCT) in a Barocycler, followed by proteomic analysis of half the sample by nanoLC-MS and sequential extraction of lipids (organic extract) and metabolites (aqueous extract) combined with HILIC and reversed phase chromatography and time-of-flight mass spectrometry on the other half. Proteomic analysis identified 845 proteins, 93 of which were significantly altered in lesion-containing arteries. Lipidomic and metabolomic analyses detected 851 lipid and 362 metabolite features, which included 215 and 65 identified lipids and metabolites, respectively. The Multi-ABLE method is the first to apply a concurrent multiomics pipeline to cardiovascular disease using small (<5 mg) tissue samples, and it is applicable to other diseases where limited size samples are available at specific points during disease progression.
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Affiliation(s)
- Jihan Talib
- Vascular Biology Division , Victor Chang Cardiac Research Institute , Lowy Packer Building, 405 Liverpool Street , Darlinghurst , New South Wales 2010 , Australia.,St Vincent's Clinical School , University of New South Wales Medicine , Camperdown , New South Wales 2050 , Australia
| | - Peter G Hains
- Cell Signalling Unit, Children's Medical Research Institute , The University of Sydney , 214 Hawkesbury Rd , Westmead , New South Wales 2145 , Australia
| | - Sergey Tumanov
- Vascular Biology Division , Victor Chang Cardiac Research Institute , Lowy Packer Building, 405 Liverpool Street , Darlinghurst , New South Wales 2010 , Australia
| | - Mark P Hodson
- Freedman Foundation Metabolomics Facility, Victor Chang Innovation Centre , Victor Chang Cardiac Research Institute , Lowy Packer Building, 405 Liverpool Street , Darlinghurst , New South Wales 2010 , Australia.,School of Pharmacy , University of Queensland , 20 Cornwall Street , Woolloongabba , Queensland 4102 , Australia
| | - Phillip J Robinson
- Cell Signalling Unit, Children's Medical Research Institute , The University of Sydney , 214 Hawkesbury Rd , Westmead , New South Wales 2145 , Australia
| | - Roland Stocker
- Vascular Biology Division , Victor Chang Cardiac Research Institute , Lowy Packer Building, 405 Liverpool Street , Darlinghurst , New South Wales 2010 , Australia.,St Vincent's Clinical School , University of New South Wales Medicine , Camperdown , New South Wales 2050 , Australia
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Qiu J, Lei D, Hu J, Yin T, Zhang K, Yu D, Wang G. Effect of intraplaque angiogenesis to atherosclerotic rupture-prone plaque induced by high shear stress in rabbit model. Regen Biomater 2017; 4:215-222. [PMID: 28798867 PMCID: PMC5544912 DOI: 10.1093/rb/rbx007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/27/2017] [Accepted: 03/01/2017] [Indexed: 12/14/2022] Open
Abstract
Atherosclerotic prone-rupture plaque is mainly localized in the region of the entrance to the stenosis with high shear stress and the reasons are largely unknown. Our hypothesis is that such a distribution of cells in atherosclerotic plaque may depend on the angiogenesis. Silastic collars induced regions of high shear stress (20.68 ± 5.27 dynes/cm2) in the upstream flow and low shear stress (12.25 ± 1.28 dynes/cm2) in the downstream flow in carotid arteries. Compared with the low shear stress region, plaques in the high shear stress region showed more intraplaque haemorrhaging, less collagen and higher apoptotic rates of vascular smooth muscle cells; endothelial cells (ECs) in the high shear stress region were characterized with integrity and high endothelial nitric oxide synthase (eNOS) expression (1570.3 ± 345.5% vs 172.9 ± 49.9%). The number of intraplaque microvessels is very high in the high shear stress region (15 ± 1.8 n/mm2 vs 3.5 ± 0.4 n/mm2), and the microvessels in the plaque show ECs were abnormal, with membrane blebs, intracytoplasmic vacuoles and leukocyte infiltration. Our current study reveals that the integrity of the endothelium and the vulnerability of atherosclerotic plaques are simultaneously localized in high shear stress regions, and we provide evidence for the first time that microvessels in the intraplaque maybe responsible for rupture-prone plaque formation in the high shear stress region.
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Affiliation(s)
- Juhui Qiu
- Department of Bio-engineering, Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, China
| | - Daoxi Lei
- Department of Bio-engineering, Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, China
| | - Jianjun Hu
- Department of Bio-engineering, Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, China
| | - Tieying Yin
- Department of Bio-engineering, Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, China
| | - Kang Zhang
- Department of Bio-engineering, Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, China
| | - Donghong Yu
- Department of Bio-engineering, Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, China
| | - Guixue Wang
- Department of Bio-engineering, Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, China
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Cervical Rotatory Manipulation Decreases Uniaxial Tensile Properties of Rabbit Atherosclerotic Internal Carotid Artery. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:5189356. [PMID: 28303160 PMCID: PMC5337804 DOI: 10.1155/2017/5189356] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/19/2016] [Indexed: 11/17/2022]
Abstract
Objective. To investigate the effects of one of the Chinese massage therapies, cervical rotatory manipulation (CRM), on uniaxial tensile properties of rabbit atherosclerotic internal carotid artery (ICA). Methods. 40 male purebred New Zealand white rabbits were randomly divided into CRM-Model group, Non-CRM-Model group, CRM-Normal group, and Non-CRM-Normal group. After modeling (atherosclerotic model) and intervention (CRM or Non-CRM), uniaxial tensile tests were performed on the ICAs to assess the differences in tensile mechanical properties between the four groups. Results. Both CRM and modeling were the main effects affecting physiological elastic modulus (PEM) of ICA. PEM in CRM-Model group was 1.81 times as much as Non-CRM-Model group, while the value in CRM-Model group was 1.34 times as much as CRM-Normal group. Maximum elastic modulus in CRM-Model group was 1.80 times as much as CRM-Normal group. Max strains in CRM-Model group and Non-CRM-Model group were 30.98% and 28.71% lower than CRM-Normal group and Non-CRM-Normal group, respectively. However, whether treated with CRM or not, the uniaxial tensile properties of healthy ICAs were not statistically different. Conclusion. CRM may decrease the uniaxial tensile properties of rabbit arteriosclerotic ICA, but with no effect on normal group. The study will aid in the meaningful explanation of the controversy about the harmfulness of CRM and the suitable population of CRM.
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Guo FX, Hu YW, Zheng L, Wang Q. Shear Stress in Autophagy and Its Possible Mechanisms in the Process of Atherosclerosis. DNA Cell Biol 2017; 36:335-346. [PMID: 28287831 DOI: 10.1089/dna.2017.3649] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Autophagy can eliminate harmful components and maintain cellular homeostasis in response to a series of extracellular insults in eukaryotes. More and more studies show that autophagy plays vital roles in the development of atherosclerosis. Atherosclerosis is a multifactorial disease and shear stress acts as a key role in its process. Understanding the role of shear stress in autophagy may offer insight into atherosclerosis therapies, especially emerging targeted therapy. In this article, we retrospect related studies to summarize the present comprehension of the association between autophagy and atherosclerosis onset and progression.
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Affiliation(s)
- Feng-Xia Guo
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University , Guangzhou, China
| | - Yan-Wei Hu
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University , Guangzhou, China
| | - Lei Zheng
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University , Guangzhou, China
| | - Qian Wang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University , Guangzhou, China
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Sun B, Zhao H, Li X, Yao H, Liu X, Lu Q, Wan J, Xu J. Angiotensin II-accelerated vulnerability of carotid plaque in a cholesterol-fed rabbit model-assessed with magnetic resonance imaging comparing to histopathology. Saudi J Biol Sci 2017; 24:495-503. [PMID: 28386172 PMCID: PMC5372370 DOI: 10.1016/j.sjbs.2017.01.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/28/2016] [Accepted: 01/06/2017] [Indexed: 12/12/2022] Open
Abstract
This study sought to reveal the effect of angiotensin II (Ang II)-induced atherosclerotic vulnerability in rabbits and to determine whether in vivo magnetic resonance imaging (MRI) can determine the effect of Ang II on atherosclerotic development over time. In total, 24 elderly male New Zealand white rabbits underwent an intravascular balloon injury in the left common carotid artery (LCCA) and were subsequently fed a high cholesterol diet for 12 weeks. At 8 weeks, rabbits were randomly assigned to receive either Ang II (1.4 mg/kg/d, Ang II group) or vehicle (phosphate-buffered saline, control) via a subcutaneous osmotic minipump for 4 weeks. The rabbits were imaged three times: at baseline and at 8 and 12 weeks. After the 12-week MRI scanning, rabbits were euthanized to obtain pathological and histological data. Atherosclerotic plaques were identified in the 21 rabbits that survived the 12-week trial. Typical feature of vulnerable plaques (VP), intraplaque hemorrhage, were observed in 6 of 10 animals (60.0%) in the Ang II group. The Cohen K value of MR imaging between the AHA classifications was 0.82 (0.73–0.91; P < 0.001). MRI revealed that the change in carotid morphology were significantly different between the Ang II and control group plaques. Our results support an important role for Ang II in plaque vulnerability by promoting intraplaque neovascularization and hemorrhage as well as inflammation. The vulnerable features induced by Ang II in rabbit carotid plaques could be accurately monitored with MRI in vivo and confirmed with histomorphology.
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Affiliation(s)
- Beibei Sun
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Huilin Zhao
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Xiao Li
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Hong Yao
- Department of Neurosurgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Xiaosheng Liu
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Qing Lu
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Jieqing Wan
- Department of Neurosurgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Jianrong Xu
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
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Aparci M, Ozturk C, Balta S, Okutucu S, Isilak Z. Hypercholesterolemia is Accounted for Atherosclerosis at the Proximal Arterial Segments of Myocardial Bridging. Clin Appl Thromb Hemost 2014; 22:297-302. [DOI: 10.1177/1076029614554995] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Arterial shear stress was generally implicated in the development of atherosclerotic plaque (AP). Atherosclerotic plaque may be associated with myocardial bridging (MB). We evaluated the metabolic abnormalities which could determine the localization of AP at the proximal coronary segment of MB. We analyzed the patients with MB, AP&MB, and AP on left anterior descending (LAD) artery who were diagnosed by multislice computed tomography coronary angiography. Serum levels of metabolic parameters were compared among study groups. Patients with MB&AP and AP were significantly older than those in the MB group. Patients with MB&AP had AP and MB at the proximal and middle segments of LAD artery, respectively. Total cholesterol, low-density lipoprotein (LDL) cholesterol and very LDL, and triglyceride levels were significantly higher in patients with MB&AP and AP compared to only MB. Low-density lipoprotein cholesterol was significantly correlated with the type of coronary artery disease in multiple regression analysis. Myocardial bridging may be an anatomical determinant for the localization of AP proximal to itself in the presence of hypercholesterolemia.
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Affiliation(s)
- Mustafa Aparci
- Department of Cardiology, Etimesgut Military Hospital, Ankara, Turkey
| | - Cengiz Ozturk
- Department of Cardiology, Gulhane Military Medical Faculty, Ankara, Turkey
| | - Sevket Balta
- Department of Cardiology, Eskisehir Military Hospital, Ankara, Turkey
| | - Sercan Okutucu
- Department of Cardiology, Etimesgut Military Hospital, Ankara, Turkey
| | - Zafer Isilak
- Department of Cardiology, Haydarpasa Training Medicine, Istanbul, Turkey
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