Yiannis S. Chatzizisis

ORCID: 0000-0001-9009-938X
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About
Contact & Profiles
Research Areas
  • Coronary Interventions and Diagnostics
  • Cardiac Imaging and Diagnostics
  • Cerebrovascular and Carotid Artery Diseases
  • Acute Myocardial Infarction Research
  • Atherosclerosis and Cardiovascular Diseases
  • Cardiovascular Disease and Adiposity
  • Lipoproteins and Cardiovascular Health
  • Cardiovascular Health and Disease Prevention
  • Cardiac electrophysiology and arrhythmias
  • Cardiovascular Function and Risk Factors
  • Aortic aneurysm repair treatments
  • Atrial Fibrillation Management and Outcomes
  • Cardiac Valve Diseases and Treatments
  • Cardiac tumors and thrombi
  • Protease and Inhibitor Mechanisms
  • Cardiac Arrhythmias and Treatments
  • Heart rate and cardiovascular health
  • Heart Rate Variability and Autonomic Control
  • Coronary Artery Anomalies
  • Cardiac pacing and defibrillation studies
  • Antiplatelet Therapy and Cardiovascular Diseases
  • Cardiac Structural Anomalies and Repair
  • Heart Failure Treatment and Management
  • Kawasaki Disease and Coronary Complications
  • Venous Thromboembolism Diagnosis and Management

University of Miami
2023-2025

University of Miami Health System
2024

University of Nebraska Medical Center
2015-2023

Scripps Clinic
2021

Brigham and Women's Hospital
2008-2017

Harvard University
2008-2017

Massachusetts General Hospital
2014-2017

Gazi Hastanesi
2017

Center for Systems Biology
2017

Nova Southeastern University
2017

Low endothelial shear stress (ESS) promotes the development of atherosclerosis; however, its role in progression atherosclerotic plaques and evolution to inflamed high-risk has not been studied. Our hypothesis was that lowest values ESS are responsible for coronary associated with excessive expansive remodeling.Twenty-four swine, treated streptozotocin induce diabetes fed a high-fat diet, were allocated into early (n=12) late atherosclerosis groups. Intima-media thickness assessed by...

10.1161/circulationaha.107.695254 article EN Circulation 2008-02-05

Background— The natural history of heterogeneous atherosclerotic plaques and the role local hemodynamic factors throughout their development are unknown. We performed a serial study to assess endothelial shear stress (ESS) vascular remodeling in coronary atherosclerosis. Methods Results— Intravascular ultrasound-based 3-dimensional reconstruction all major arteries (n=15) was serially vivo 5 swine 4, 11, 16, 23, 36 weeks after induction diabetes mellitus hyperlipidemia. reconstructed were...

10.1161/circulationaha.109.901678 article EN Circulation 2010-05-04

Superficial erosion currently causes up to a third of acute coronary syndromes; yet, we lack understanding its mechanisms. Thrombi because superficial intimal characteristically complicate matrix-rich atheromata in regions flow perturbation.This study tested vivo the involvement disturbed and neutrophils, hyaluronan, Toll-like receptor 2 ligation injury, process implicated erosion.In mouse carotid arteries with established lesions tailored resemble substrate human eroded plaques,...

10.1161/circresaha.117.310694 article EN Circulation Research 2017-04-21

Background- The molecular mechanisms that determine the localized formation of thin-capped atheromata in coronary arteries remain unknown. This study tested hypothesis low endothelial shear stress augments expression matrix-degrading proteases and thereby promotes atheromata. Methods Results- Intravascular ultrasound-based, geometrically correct 3-dimensional reconstruction 12 swine was performed vivo 23 weeks after initiation diabetes mellitus a hyperlipidemic diet. Local calculated...

10.1161/circulationaha.110.970038 article EN Circulation 2011-02-01

The mechanisms promoting the focal formation of rupture-prone coronary plaques in vivo remain incompletely understood. This study tested hypothesis that regions exposed to low endothelial shear stress (ESS) favor subsequent development collagen-poor, thin-capped plaques.Coronary angiography and 3-vessel intravascular ultrasound were serially performed at 5 consecutive time points diabetic, hypercholesterolemic pigs. ESS was calculated along course each artery with computational fluid...

10.1161/atvbaha.112.300827 article EN Arteriosclerosis Thrombosis and Vascular Biology 2013-05-03

The authors estimated noninvasively the wall stress distribution for actual abdominal aortic aneurysms (AAAs) in vivo on a patient-to-patient basis and correlated peak (PWS) with various geometrical parameters. They studied 39 patients (37 men, mean age 73.7 +/- 8.2 years) an intact AAA (mean diameter 6.3 1.7 cm) undergoing preoperative evaluation spiral computed tomography (CT). Real 3-dimensional geometry was obtained from image processing. Wall determined by using finite-element analysis....

10.1177/0003319706290741 article EN Angiology 2006-08-01

To investigate the wall shear stress oscillation in a normal human left coronary artery bifurcation computational model by applying non-Newtonian blood properties and phasic flow.The three-dimensional geometry of investigated included main along with its two branches, namely anterior descending circumflex artery. For analyses pulsatile flow was applied. evaluate cyclic variations stress, six characteristic time-points cardiac cycle were selected. The variation compared Newtonian one.The...

10.1097/00019501-200606000-00005 article EN Coronary Artery Disease 2006-05-17
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