1
|
Pei Y, Liu Q, Li X. Haemodynamic study of left nonthrombotic iliac vein lesions: a preliminary report. Sci Rep 2024; 14:18837. [PMID: 39138303 PMCID: PMC11322632 DOI: 10.1038/s41598-024-69598-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Accepted: 08/07/2024] [Indexed: 08/15/2024] Open
Abstract
Nonthrombotic iliac vein lesions (NIVLs) are significant causes of chronic venous insufficiency (CVI) in the left lower limb and symptom recurrence following left lower limb varicose vein treatment. The goal of this study was to explore the haemodynamic and morphological characteristics of iliac veins in patients with NIVLs. Pressure at the caudal end of the stenotic left common iliac vein (LCIV) segment, local blood flow velocity, and time-averaged wall shear stress in the stenotic segment exhibited positive correlations with the clinical CVI classification (R = 0.92, p < 0.001; R = 0.94, p < 0.001; R = 0.87, p < 0.001), while the relative retention time showed a negative correlation (R = -0.94, p < 0.001). The pressure difference (∆P) between the two ends of the stenotic segment and the velocity difference (∆V) between the stenotic segment and the caudal end were positively correlated with the clinical classification (R = 0.92, p < 0.001; R = 0.9, p < 0.001). The cross-sectional area stenosis rate and length of the stenotic LCIV segment were positively correlated with the clinical classification (R = 0.93, p < 0.001; R = 0.63, p < 0.001). The results suggest that haemodynamic assessment of the iliac vein could effectively portray blood flow disturbances in stenotic segments of the LCIV, potentially reflecting the degree of iliac vein stenosis. Haemodynamic indicators are correlated with the severity of clinical CVI symptoms.
Collapse
Affiliation(s)
- Yun Pei
- Department of Interventional Radiology and Vascular Surgery, Peking University Third Hospital, 49 North Huayuan Road, Haidian District, 100191, Beijing, China
| | - Qijia Liu
- Department of Interventional Radiology and Vascular Surgery, Peking University Third Hospital, 49 North Huayuan Road, Haidian District, 100191, Beijing, China
| | - Xuan Li
- Department of Interventional Radiology and Vascular Surgery, Peking University Third Hospital, 49 North Huayuan Road, Haidian District, 100191, Beijing, China.
| |
Collapse
|
2
|
Wang M, Kim SH, Monticone RE, Lakatta EG. Matrix metalloproteinases promote arterial remodeling in aging, hypertension, and atherosclerosis. Hypertension 2015; 65:698-703. [PMID: 25667214 DOI: 10.1161/hypertensionaha.114.03618] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Mingyi Wang
- From the Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Biomedical Research Center (BRC), Baltimore, MD.
| | - Soo Hyuk Kim
- From the Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Biomedical Research Center (BRC), Baltimore, MD
| | - Robert E Monticone
- From the Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Biomedical Research Center (BRC), Baltimore, MD
| | - Edward G Lakatta
- From the Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Biomedical Research Center (BRC), Baltimore, MD.
| |
Collapse
|
3
|
Hald ES, Steucke KE, Reeves JA, Win Z, Alford PW. Long-term vascular contractility assay using genipin-modified muscular thin films. Biofabrication 2014; 6:045005. [PMID: 25245868 DOI: 10.1088/1758-5082/6/4/045005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Vascular disease is a leading cause of death globally and typically manifests chronically due to long-term maladaptive arterial growth and remodeling. To date, there is no in vitro technique for studying vascular function over relevant disease time courses that both mimics in vivo-like tissue structure and provides a simple readout of tissue stress. We aimed to extend tissue viability in our muscular thin film contractility assay by modifying the polydimethylsiloxane (PDMS) substrate with micropatterned genipin, allowing extracellular matrix turnover without cell loss. To achieve this, we developed a microfluidic delivery system to pattern genipin and extracellular matrix proteins on PDMS prior to cell seeding. Tissues constructed using this method showed improved viability and maintenance of in vivo-like lamellar structure. Functional contractility of tissues fabricated on genipin-modified substrates remained consistent throughout two weeks in culture. These results suggest that muscular thin films with genipin-modified PDMS substrates are a viable method for conducting functional studies of arterial growth and remodeling in vascular diseases.
Collapse
Affiliation(s)
- Eric S Hald
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | | | | | | | | |
Collapse
|
4
|
Karimi A, Navidbakhsh M, Shojaei A, Hassani K, Faghihi S. STUDY OF PLAQUE VULNERABILITY IN CORONARY ARTERY USING MOONEY–RIVLIN MODEL: A COMBINATION OF FINITE ELEMENT AND EXPERIMENTAL METHOD. BIOMEDICAL ENGINEERING-APPLICATIONS BASIS COMMUNICATIONS 2014. [DOI: 10.4015/s1016237214500136] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Atherosclerosis is a disease in which plaque builds up inside arteries. It is also considered as one of the most serious and common forms of cardiovascular disease which can lead to heart attack and stroke. In the current research, finite element method is used to anticipate plaque vulnerability based on peak plaque stress using human samples. A total of 23 healthy and atherosclerotic human coronary arteries, including 14 healthy and 9 atherosclerotic are removed within 5 h postmortem. The samples are mounted on a uniaxial tensile test machine and the obtained mechanical properties are used in finite element models. The results, including the Mooney–Rivlin hyperelastic constants of the samples as well as peak plaque stresses, are computed. It is demonstrated that the atherosclerotic human coronary arteries have significantly (p < 0.05) higher stiffness compared to healthy ones. The hypocellular plaque, in addition, has the highest stress values compared to the cellular and calcified ones and, consequently, is so prone to rupture. The calcified plaque type, nevertheless, has the lowest stress values and, remains stable. The results of this study can be used in the plaque vulnerability prediction and could have clinical implications for interventions and surgeries, such as balloon angioplasty, bypass and stenting.
Collapse
Affiliation(s)
- Alireza Karimi
- Tissue Engineering and Biomaterials Division, National Institute of Genetic Engineering and Biotechnology, Tehran 14965/161, Iran
- Mechanical Engineering Department, Iran University of Science and Technology, Tehran 16844, Iran
| | - Mahdi Navidbakhsh
- Mechanical Engineering Department, Iran University of Science and Technology, Tehran 16844, Iran
| | - Ahmad Shojaei
- Research Department, Basir Eye Center, Tehran 14186, Iran
| | - Kamran Hassani
- Department of Biomechanics, Science and Research Branch, Islamic Azad University, Tehran 755/4515, Iran
| | - Shahab Faghihi
- Tissue Engineering and Biomaterials Division, National Institute of Genetic Engineering and Biotechnology, Tehran 14965/161, Iran
| |
Collapse
|
5
|
Smooth muscle phenotype switching in blast traumatic brain injury-induced cerebral vasospasm. Transl Stroke Res 2013; 5:385-93. [PMID: 24323722 DOI: 10.1007/s12975-013-0300-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 10/15/2013] [Accepted: 10/20/2013] [Indexed: 10/26/2022]
Abstract
Due to increased survival rates among soldiers exposed to explosive blasts, blast-induced traumatic brain injury (bTBI) has become much more prevalent in recent years. Cerebral vasospasm (CVS) is a common manifestation of brain injury whose incidence is significantly increased in bTBI. CVS is characterized by initial vascular smooth muscle cell (VSMC) hypercontractility, followed by prolonged vessel remodeling and lumen occlusion, and is traditionally associated with subarachnoid hemorrhage (SAH), but recent results suggest that mechanical injury during bTBI can cause mechanotransduced VSMC hypercontractility and phenotype switching necessary for CVS development, even in the absence of SAH. Here, we review the mechanisms by which mechanical stimulation and SAH can synergistically drive CVS progression, complicating treatment options in bTBI patients.
Collapse
|
6
|
Karimi A, Navidbakhsh M, Faghihi S, Shojaei A, Hassani K. A finite element investigation on plaque vulnerability in realistic healthy and atherosclerotic human coronary arteries. Proc Inst Mech Eng H 2013; 227:148-61. [PMID: 23513986 DOI: 10.1177/0954411912461239] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Atherosclerosis is the most common arterial disease. It has been shown that stresses that are induced during blood circulation can cause plaque rupture and, in turn, lead to thrombosis and stroke. In this study, finite element method is used to predict plaque vulnerability based on peak plaque stress using human samples. A total of 23 healthy and atherosclerotic human coronary arteries of 14 healthy and 9 atherosclerotic patients are excised within 5 h postmortem. The samples are mounted on an uniaxial tensile test machine, and the obtained mechanical properties are used in two-dimensional and three-dimensional finite element models. The results including the Neo-Hookean hyperelastic coefficients of the samples as well as peak plaque stresses are analyzed. The results indicate that the atherosclerotic human coronary arteries have significantly (p < 0.05) higher stiffness compared with the healthy ones. The hypocellular plaque also has the highest stress values and, as a result, is most likely (vulnerable) to rupture, while the calcified type has the lowest stress values and, consequently, is expected to remain stable. The results could be used in the plaque vulnerability anticipation and have clinical implications in interventions and surgeries, including balloon angioplasty, bypass, and stenting.
Collapse
Affiliation(s)
- Alireza Karimi
- Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
| | | | | | | | | |
Collapse
|
7
|
Karimi A, Navidbakhsh M, Shojaei A, Faghihi S. Measurement of the uniaxial mechanical properties of healthy and atherosclerotic human coronary arteries. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2550-4. [PMID: 23623067 DOI: 10.1016/j.msec.2013.02.016] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 01/17/2013] [Accepted: 02/10/2013] [Indexed: 01/19/2023]
Abstract
Atherosclerosis is a common arterial disease which alters the stiffness of arterial wall. Arterial stiffness is related to many cardiovascular diseases. In this investigation, maximum stress and strain as well as physiological and maximum elastic modulus of 22 human coronary arteries are measured. In addition, the force-displacement diagram of human coronary artery is obtained to discern the alterations between the healthy and atherosclerotic arterial wall stiffness. The age of each specimen and its effect on the elastic modulus of human coronary arteries is also considered. Twenty-two human coronary arteries, including eight atherosclerotic and fourteen healthy arteries are excised within 5 hours post-mortem. Samples are mounted on a tensile-testing machine and force is applied until breakage occurs. Elastic modulus coefficient of each specimen is calculated to compare the stiffness of healthy and atherosclerotic coronary arteries. The results show that the atherosclerotic arteries bear 44.55% more stress and 34.61% less strain compared to the healthy ones. The physiological and maximum elastic moduli of healthy arteries are 2.53 and 2.91 times higher than that of atherosclerotic arteries, respectively. The age of specimens show no correlation with the arterial wall stiffness. A combination of biomechanics and mathematics is used to characterize the mechanical properties of human coronary arteries. These results could be utilized to understand the extension and rupture mechanism of coronary arteries and has implications for interventions and surgeries, including balloon-angioplasty, bypass, and stenting.
Collapse
Affiliation(s)
- Alireza Karimi
- Tissue Engineering and Biomaterials Division, National Institute of Genetic Engineering and Biotechnology, Tehran 14965/161, Iran
| | | | | | | |
Collapse
|
8
|
Sedaghatizadeh N, Atefi G, Fardad A, Barari A, Soleimani S, Khani S. Analysis of blood flow through a viscoelastic artery using the Cosserat continuum with the large-amplitude oscillatory shear deformation model. J Mech Behav Biomed Mater 2011; 4:1123-31. [DOI: 10.1016/j.jmbbm.2011.03.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Revised: 03/05/2011] [Accepted: 03/15/2011] [Indexed: 11/16/2022]
|