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Pukaluk A, Sommer G, Holzapfel GA. Multimodal experimental studies of the passive mechanical behavior of human aortas: Current approaches and future directions. Acta Biomater 2024; 178:1-12. [PMID: 38401775 DOI: 10.1016/j.actbio.2024.02.026] [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: 11/26/2023] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/26/2024]
Abstract
Cardiovascular diseases are the leading cause of death worldwide and include, among others, critical conditions of the aortic wall. Importantly, such critical conditions require effective diagnosis and treatment, which are not yet accurate enough. However, they could be significantly strengthened with predictive material models of the aortic wall. In particular, such predictive models could support surgical decisions, preoperative planning, and estimation of postoperative tissue remodeling. However, developing a predictive model requires experimental data showing both structural parameters and mechanical behavior. Such experimental data can be obtained using multimodal experiments. This review therefore discusses the current approaches to multimodal experiments. Importantly, the strength of the aortic wall is determined primarily by its passive components, i.e., mainly collagen, elastin, and proteoglycans. Therefore, this review focuses on multimodal experiments that relate the passive mechanical behavior of the human aortic wall to the structure and organization of its passive components. In particular, the multimodal experiments are classified according to the expected results. Multiple examples are provided for each experimental class and summarized with highlighted advantages and disadvantages of the method. Finally, future directions of multimodal experiments are envisioned and evaluated. STATEMENT OF SIGNIFICANCE: Multimodal experiments are innovative approaches that have gained interest very quickly, but also recently. This review presents therefore a first clear summary of groundbreaking research in the field of multimodal experiments. The benefits and limitations of various types of multimodal experiments are thoroughly discussed, and a comprehensive overview of possible results is provided. Although this review focuses on multimodal experiments performed on human aortic tissues, the methods used and described are not limited to human aortic tissues but can be extended to other soft materials.
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Affiliation(s)
- Anna Pukaluk
- Institute of Biomechanics, Graz University of Technology, Austria
| | - Gerhard Sommer
- Institute of Biomechanics, Graz University of Technology, Austria
| | - Gerhard A Holzapfel
- Institute of Biomechanics, Graz University of Technology, Austria; Department of Structural Engineering (NTNU), Trondheim, Norway.
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2
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Gibson Hughes TA, Dona MSI, Sobey CG, Pinto AR, Drummond GR, Vinh A, Jelinic M. Aortic Cellular Heterogeneity in Health and Disease: Novel Insights Into Aortic Diseases From Single-Cell RNA Transcriptomic Data Sets. Hypertension 2024; 81:738-751. [PMID: 38318714 DOI: 10.1161/hypertensionaha.123.20597] [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] [Indexed: 02/07/2024]
Abstract
Aortic diseases such as atherosclerosis, aortic aneurysms, and aortic stiffening are significant complications that can have significant impact on end-stage cardiovascular disease. With limited pharmacological therapeutic strategies that target the structural changes in the aorta, surgical intervention remains the only option for some patients with these diseases. Although there have been significant contributions to our understanding of the cellular architecture of the diseased aorta, particularly in the context of atherosclerosis, furthering our insight into the cellular drivers of disease is required. The major cell types of the aorta are well defined; however, the advent of single-cell RNA sequencing provides unrivaled insights into the cellular heterogeneity of each aortic cell type and the inferred biological processes associated with each cell in health and disease. This review discusses previous concepts that have now been enhanced with recent advances made by single-cell RNA sequencing with a focus on aortic cellular heterogeneity.
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Affiliation(s)
- Tayla A Gibson Hughes
- Centre for Cardiovascular Biology and Disease Research, Department of Microbiology, Anatomy Physiology and Pharmacology, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC, Australia (T.A.G.H., C.G.S., A.R.P., G.R.D., A.V., M.J.)
| | - Malathi S I Dona
- Baker Heart and Diabetes Research Institute, Melbourne, Victoria, Australia (M.S.I.D., A.R.P.)
| | - Christopher G Sobey
- Centre for Cardiovascular Biology and Disease Research, Department of Microbiology, Anatomy Physiology and Pharmacology, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC, Australia (T.A.G.H., C.G.S., A.R.P., G.R.D., A.V., M.J.)
| | - Alexander R Pinto
- Centre for Cardiovascular Biology and Disease Research, Department of Microbiology, Anatomy Physiology and Pharmacology, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC, Australia (T.A.G.H., C.G.S., A.R.P., G.R.D., A.V., M.J.)
- Baker Heart and Diabetes Research Institute, Melbourne, Victoria, Australia (M.S.I.D., A.R.P.)
| | - Grant R Drummond
- Centre for Cardiovascular Biology and Disease Research, Department of Microbiology, Anatomy Physiology and Pharmacology, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC, Australia (T.A.G.H., C.G.S., A.R.P., G.R.D., A.V., M.J.)
| | - Antony Vinh
- Centre for Cardiovascular Biology and Disease Research, Department of Microbiology, Anatomy Physiology and Pharmacology, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC, Australia (T.A.G.H., C.G.S., A.R.P., G.R.D., A.V., M.J.)
| | - Maria Jelinic
- Centre for Cardiovascular Biology and Disease Research, Department of Microbiology, Anatomy Physiology and Pharmacology, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC, Australia (T.A.G.H., C.G.S., A.R.P., G.R.D., A.V., M.J.)
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Hof A, Guthoff H, Ahdab M, Landerer M, Schäkel J, Niehues J, Schorscher M, Zimmermann O, Winkels H, von Stein P, Geißen S, Baldus S, Adam M, Mollenhauer M, Mehrkens D. Vascular Ultrasound for In Vivo Assessment of Arterial Pathologies in a Murine Model of Atherosclerosis and Aortic Aneurysm. Int J Mol Sci 2023; 24:15261. [PMID: 37894941 PMCID: PMC10607567 DOI: 10.3390/ijms242015261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Vascular diseases like atherosclerosis and abdominal aortic aneurysm (AAA) are common pathologies in the western world, promoting various potentially fatal conditions. Here, we evaluate high-resolution (HR) ultrasound in mouse models of atherosclerosis and AAA as a useful tool for noninvasive monitoring of early vascular changes in vivo. We used Apolipoprotein E-deficient (ApoE-/-) mice as an atherosclerosis model and induced AAA development by the implementation of Angiotensin II-releasing osmotic minipumps. HR ultrasound of the carotid artery or the abdominal aorta was performed to monitor vascular remodeling in vivo. Images were analyzed by speckle tracking algorithms and correlated to histological analyses and subsequent automated collagen quantification. Consistent changes were observed via ultrasound in both models: Global radial strain (GRS) was notably reduced in the AAA model (23.8 ± 2.8% vs. 12.5 ± 2.5%, p = 0.01) and in the atherosclerotic mice (20.6 ± 1.3% vs. 15.8 ± 0.9%, p = 0.02). In mice with AAA, vessel distensibility was significantly reduced, whereas intima-media thickness was increased in atherosclerotic mice. The area and collagen content of the tunica media were increased in diseased arteries of both models as measured by automated image analysis of Picrosirius Red-stained aortic sections. Correlation analysis revealed a strong correlation of multiple parameters, predicting early vascular damage in HR ultrasound and histological examinations. In conclusion, our findings underscore the potential of HR ultrasound in effectively tracing early alterations in arterial wall properties in murine models of atherosclerosis and AAA.
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Affiliation(s)
- Alexander Hof
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
| | - Henning Guthoff
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
| | - Maysam Ahdab
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
| | - Max Landerer
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
| | - Jasper Schäkel
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
| | - Jana Niehues
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
| | - Maximilian Schorscher
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
| | - Oscar Zimmermann
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
| | - Holger Winkels
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
| | - Philipp von Stein
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
| | - Simon Geißen
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
| | - Stephan Baldus
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
| | - Matti Adam
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
| | - Martin Mollenhauer
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
| | - Dennis Mehrkens
- Department for Experimental Cardiology, Faculty of Medicine, University of Cologne, Clinic III for Internal Medicine, University Hospital Cologne, 50937 Cologne, Germany; (A.H.); (M.A.); (M.L.); (J.S.); (J.N.); (M.S.); (O.Z.); (H.W.); (P.v.S.); (S.G.); (S.B.); (M.A.); (M.M.)
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50937 Cologne, Germany
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4
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Takada J, Hamada K, Zhu X, Tsuboko Y, Iwasaki K. Biaxial tensile testing system for measuring mechanical properties of both sides of biological tissues. J Mech Behav Biomed Mater 2023; 146:106028. [PMID: 37531771 DOI: 10.1016/j.jmbbm.2023.106028] [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: 11/25/2022] [Revised: 07/11/2023] [Accepted: 07/14/2023] [Indexed: 08/04/2023]
Abstract
The aortic wall exhibits a unique elastic behavior, periodically expanding in aortic diameter by approximately 10% during heartbeats. This elastic behavior of the aortic wall relies on the distinct yet interacting mechanical properties of its three layers: intima, media, and adventitia. Aortic aneurysms develop as a result of multifactorial remodeling influenced by mechanical vulnerability of the aortic wall. Therefore, investigating the mechanical response of the aneurysmal wall, in conjunction with changes in microstructural parameters on both the intimal and adventitial sides, may offer valuable insights into the mechanisms of aortic aneurysm development or rupture. This study aimed to develop a biaxial tensile testing system to measure the mechanical properties of both sides of the tissue to gain insights concerning the interactions in anisotropic layered tissue. The biaxial tensile test set-up consisted of four motors, four cameras, four load cells, and a toggle switch. Porcine ascending aortas were chosen as the test subject. Graphite particles with diameters of approximately 5-11 [μm] were randomly applied to both sides of the aorta. Strain measurements were obtained using the stereo digital-image correlation method. Because stretching a rectangular specimen with a thread inevitably concentrates and localizes stress, to reduce this effect the specimen's shape was investigated using finite element analysis. The finite element analysis showed that a cross-shaped specimen with diagonally cut edges would be suitable. Therefore, we prepared specimens with this novel shape. This test system showed that mechanical response of the aortic tissue was significantly different between the intimal and adventitial side in the high-strain range, due to the disruption of collagen fibers. The adventitia side exhibited a smaller elastic modulus than the intimal side, accompanied by disruption of collagen fibers in the adventitia, which were more pronounced in the longitudinal direction. In contrast, in the mid-strain range, the elastic modulus did not differ between the intimal and adventitial sides, irrespective of longitudinal or circumferential direction, and collagen fibers were not disrupted but elongated. A biaxial tensile test system, which measures the mechanical properties of both sides of biological tissues and the shape of the specimen for reducing the concentration of stress at the chuck region, was developed in this study. The biaxial tensile testing system developed here is useful for better understanding the influences of mechanical loads and tissue degeneration on anisotropic, layered biological tissues.
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Affiliation(s)
- Jumpei Takada
- Department of Modern Mechanical Engineering, School of Creative Science and Engineering, Waseda University, Tokyo, Japan; Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Kohei Hamada
- Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Xiaodong Zhu
- Waseda Research Institute for Science and Engineering, Waseda University, Tokyo, Japan
| | - Yusuke Tsuboko
- Waseda Research Institute for Science and Engineering, Waseda University, Tokyo, Japan
| | - Kiyotaka Iwasaki
- Department of Modern Mechanical Engineering, School of Creative Science and Engineering, Waseda University, Tokyo, Japan; Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan; Waseda Research Institute for Science and Engineering, Waseda University, Tokyo, Japan; Cooperative Major in Advanced Biomedical Sciences, Joint Graduate School of Tokyo Women's Medical University and Waseda University, Waseda University, Tokyo, Japan.
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5
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Eckersley A, Ozols M, Chen P, Tam V, Ward LJ, Hoyland JA, Trafford A, Yuan XM, Schiller HB, Chan D, Sherratt MJ. Peptide location fingerprinting identifies species- and tissue-conserved structural remodelling of proteins as a consequence of ageing and disease. Matrix Biol 2022; 114:108-137. [PMID: 35618217 DOI: 10.1016/j.matbio.2022.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/12/2022] [Accepted: 05/19/2022] [Indexed: 12/30/2022]
Abstract
Extracellular matrices (ECMs) in the intervertebral disc (IVD), lung and artery are thought to undergo age-dependant accumulation of damage by chronic exposure to mechanisms such as reactive oxygen species, proteases and glycation. It is unknown whether this damage accumulation is species-dependant (via differing lifespans and hence cumulative exposures) or whether it can influence the progression of age-related diseases such as atherosclerosis. Peptide location fingerprinting (PLF) is a new proteomic analysis method, capable of the non-targeted identification of structure-associated changes within proteins. Here we applied PLF to publicly available ageing human IVD (outer annulus fibrosus), ageing mouse lung and human arterial atherosclerosis datasets and bioinformatically identified novel target proteins alongside common age-associated differences within protein structures which were conserved between three ECM-rich organs, two species, three IVD tissue regions, sexes and in an age-related disease. We identify peptide yield differences across protein structures which coincide with biological regions, potentially reflecting the functional consequences of ageing or atherosclerosis for macromolecular assemblies (collagen VI), enzyme/inhibitor activity (alpha-2 macroglobulin), activation states (complement C3) and interaction states (laminins, perlecan, fibronectin, filamin-A, collagen XIV and apolipoprotein-B). Furthermore, we show that alpha-2 macroglobulin and collagen XIV exhibit possible shared structural consequences in IVD ageing and arterial atherosclerosis, providing novel links between an age-related disease and intrinsic ageing. Crucially, we also demonstrate that fibronectin, laminin beta chains and filamin-A all exhibit conserved age-associated structural differences between mouse lung and human IVD, providing evidence that ECM, and their associating proteins, may be subjected to potentially similar mechanisms or consequences of ageing across both species, irrespective of differences in lifespan and tissue function.
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Affiliation(s)
- Alexander Eckersley
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.
| | - Matiss Ozols
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; Department of Human Genetics, Wellcome Sanger Institute, Genome Campus, Hinxton, United Kingdom; British Heart Foundation Centre of Research Excellence, University of Cambridge, Cambridge, United Kingdom
| | - Peikai Chen
- Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital (HKU-SZH), Shenzhen, Guangdong 518053, China
| | - Vivian Tam
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China
| | - Liam J Ward
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden; Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden
| | - Judith A Hoyland
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Andrew Trafford
- Division of Cardiovascular Sciences, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Xi-Ming Yuan
- Occupational and Environmental Medicine, Division of Prevention, Rehabilitation and Community Medicine, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Herbert B Schiller
- Institute of Lung Health and Immunity and Comprehensive Pneumology Center, Helmholtz Munich, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Danny Chan
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China
| | - Michael J Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.
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Adar A, Onalan O, Cakan F, Keles H, Akbay E, Akıncı S, Coner A, Haberal C, Muderrisoglu H. Evaluation of the relationship between para-aortic adipose tissue and ascending aortic diameter using a new method. Acta Cardiol 2022; 77:943-949. [PMID: 36189879 DOI: 10.1080/00015385.2022.2121537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
BACKGROUND Para-aortic adipose tissue (PAT) is the local adipose tissue that externally surrounds the aorta. It contributes significantly to aortic atherosclerosis and enlargement. Studies conducted with computed tomography and magnetic resonance have shown that individuals with aortic aneurysm had more PAT than healthy individuals. In this study, we measured PAT using transthoracic echocardiography (TTE). The aim of this study is to investigate the possible relationship of TTE measured PAT with ascending aortic width. METHODS PAT was defined as the hypoechoic space in front of ascending aortic 2 cm above the sinotubular junction at the end of the systole. Patients were divided into 2 groups according to the presence of dilatation in the ascending aorta using Roman's classification (aortic size index, ASI). ASI of less than 21 was considered no aortic dilation and an ASI of 21 mm/m2 or greater was considered to have aortic dilation. RESULTS A total of 321 unselected patients were divided into the ascending aortic dilatation (AAD) group (n = 96) and the normal ascending aorta diameter group (n = 225 patients). PAT was significantly higher in the AAD group compared with the non-ADD group (0.9 (0.48) vs. 0.7 (0.91) mm, p < 0.0001). Univariate and multivariate logistic regression analysis revealed that PAT (OR: 3.005, 95%CI (1.445-6.251)) were significantly associated with AAD. CONCLUSIONS This is the first study which evaluated PAT measured by TTE. We found a significant association between PAT measured by TTE and ascending aorta width.
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Affiliation(s)
- Adem Adar
- Department of Cardiology, Baskent University Faculty of Medicine, Alanya, Turkey
| | - Orhan Onalan
- Department of Cardiology, Karabuk University Faculty of Medicine, Karabuk, Turkey.,Department of Radiology, Karabuk University Faculty of Medicine, Alanya, Turkey
| | - Fahri Cakan
- Department of Cardiology, Karabuk University Faculty of Medicine, Karabuk, Turkey.,Department of Radiology, Karabuk University Faculty of Medicine, Alanya, Turkey
| | - Hakan Keles
- Department of Cardiovascular Surgery, Baskent University Faculty of Medicine, Alanya, Turkey
| | - Ertan Akbay
- Department of Cardiology, Baskent University Faculty of Medicine, Alanya, Turkey
| | - Sinan Akıncı
- Department of Cardiology, Baskent University Faculty of Medicine, Alanya, Turkey
| | - Ali Coner
- Department of Cardiology, Baskent University Faculty of Medicine, Alanya, Turkey
| | - Cevahir Haberal
- Department of Cardiovascular Surgery, Baskent University Faculty of Medicine, Alanya, Turkey
| | - Haldun Muderrisoglu
- Department of Cardiology, Baskent University Faculty of Medicine, Alanya, Turkey
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7
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Niestrawska JA, Pukaluk A, Babu AR, Holzapfel GA. Differences in Collagen Fiber Diameter and Waviness between Healthy and Aneurysmal Abdominal Aortas. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2022; 28:1-15. [PMID: 35545876 DOI: 10.1017/s1431927622000629] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Collagen plays a key role in the strength of aortic walls, so studying micro-structural changes during disease development is critical to better understand collagen reorganization. Second-harmonic generation microscopy is used to obtain images of human aortic collagen in both healthy and diseased states. Methods are being developed in order to efficiently determine the waviness, that is, tortuosity and amplitude, as well as the diameter, orientation, and dispersion of collagen fibers, and bundles in healthy and aneurysmal tissues. The results show layer-specific differences in the collagen of healthy tissues, which decrease in samples of aneurysmal aortic walls. In healthy tissues, the thick collagen bundles of the adventitia are characterized by greater waviness, both in the tortuosity and in the amplitude, compared to the relatively thin and straighter collagen fibers of the media. In contrast, most aneurysmal tissues tend to have a more uniform structure of the aortic wall with no significant difference in collagen diameter between the luminal and abluminal layers. An increase in collagen tortuosity compared to the healthy media is also observed in the aneurysmal luminal layer. The data set provided can help improve related material and multiscale models of aortic walls and aneurysm formation.
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Affiliation(s)
- Justyna A Niestrawska
- Institute of Biomechanics, Graz University of Technology, Stremayrgasse 16, 8010Graz, Austria
| | - Anna Pukaluk
- Institute of Biomechanics, Graz University of Technology, Stremayrgasse 16, 8010Graz, Austria
| | - Anju R Babu
- Institute of Biomechanics, Graz University of Technology, Stremayrgasse 16, 8010Graz, Austria
| | - Gerhard A Holzapfel
- Institute of Biomechanics, Graz University of Technology, Stremayrgasse 16, 8010Graz, Austria
- Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), 7491Trondheim, Norway
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8
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Gombert A, Prendes CF. Multimodal structural analysis of the human aorta: from valve to bifurcation- an important step back to the drawing table of aortic basic research. Eur J Vasc Endovasc Surg 2022; 63:731. [DOI: 10.1016/j.ejvs.2022.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 02/07/2022] [Indexed: 11/03/2022]
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Liyanage L, Musto L, Budgeon C, Rutty G, Biggs M, Saratzis A, Vorp DA, Vavourakis V, Bown M, Tsamis A. Multimodal structural analysis of the human aorta: from valve to bifurcation. Eur J Vasc Endovasc Surg 2022; 63:721-730. [DOI: 10.1016/j.ejvs.2022.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 01/05/2022] [Accepted: 02/06/2022] [Indexed: 11/29/2022]
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10
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Sunderland K, Jiang J, Zhao F. Disturbed flow's impact on cellular changes indicative of vascular aneurysm initiation, expansion, and rupture: A pathological and methodological review. J Cell Physiol 2022; 237:278-300. [PMID: 34486114 PMCID: PMC8810685 DOI: 10.1002/jcp.30569] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/06/2021] [Accepted: 08/16/2021] [Indexed: 01/03/2023]
Abstract
Aneurysms are malformations within the arterial vasculature brought on by the structural breakdown of the microarchitecture of the vessel wall, with aneurysms posing serious health risks in the event of their rupture. Blood flow within vessels is generally laminar with high, unidirectional wall shear stressors that modulate vascular endothelial cell functionality and regulate vascular smooth muscle cells. However, altered vascular geometry induced by bifurcations, significant curvature, stenosis, or clinical interventions can alter the flow, generating low stressor disturbed flow patterns. Disturbed flow is associated with altered cellular morphology, upregulated expression of proteins modulating inflammation, decreased regulation of vascular permeability, degraded extracellular matrix, and heightened cellular apoptosis. The understanding of the effects disturbed flow has on the cellular cascades which initiate aneurysms and promote their subsequent growth can further elucidate the nature of this complex pathology. This review summarizes the current knowledge about the disturbed flow and its relation to aneurysm pathology, the methods used to investigate these relations, as well as how such knowledge has impacted clinical treatment methodologies. This information can contribute to the understanding of the development, growth, and rupture of aneurysms and help develop novel research and aneurysmal treatment techniques.
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Affiliation(s)
- Kevin Sunderland
- Department of Biomedical Engineering, Michigan Technological University, Houghton, MI 49931
| | - Jingfeng Jiang
- Department of Biomedical Engineering, Michigan Technological University, Houghton, MI 49931,Corresponding Authors: Feng Zhao, 101 Bizzell Street, College Station, TX 77843-312, Tel : 979-458-1239, , Jingfeng Jiang, 1400 Townsend Dr., Houghton, MI 49931, Tel: 906-487-1943
| | - Feng Zhao
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843,Corresponding Authors: Feng Zhao, 101 Bizzell Street, College Station, TX 77843-312, Tel : 979-458-1239, , Jingfeng Jiang, 1400 Townsend Dr., Houghton, MI 49931, Tel: 906-487-1943
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11
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Eckersley A, Ozols M, Chen P, Tam V, Hoyland JA, Trafford A, Chan D, Sherratt MJ. Peptide Location Fingerprinting Reveals Tissue Region-Specific Differences in Protein Structures in an Ageing Human Organ. Int J Mol Sci 2021; 22:10408. [PMID: 34638745 PMCID: PMC8509034 DOI: 10.3390/ijms221910408] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/10/2021] [Accepted: 09/14/2021] [Indexed: 12/18/2022] Open
Abstract
In ageing tissues, long-lived extracellular matrix (ECM) proteins are susceptible to the accumulation of structural damage due to diverse mechanisms including glycation, oxidation and protease cleavage. Peptide location fingerprinting (PLF) is a new mass spectrometry (MS) analysis technique capable of identifying proteins exhibiting structural differences in complex proteomes. PLF applied to published young and aged intervertebral disc (IVD) MS datasets (posterior, lateral and anterior regions of the annulus fibrosus) identified 268 proteins with age-associated structural differences. For several ECM assemblies (collagens I, II and V and aggrecan), these differences were markedly conserved between degeneration-prone (posterior and lateral) and -resistant (anterior) regions. Significant differences in peptide yields, observed within collagen I α2, collagen II α1 and collagen V α1, were located within their triple-helical regions and/or cleaved C-terminal propeptides, indicating potential accumulation of damage and impaired maintenance. Several proteins (collagen V α1, collagen II α1 and aggrecan) also exhibited tissue region (lateral)-specific differences in structure between aged and young samples, suggesting that some ageing mechanisms may act locally within tissues. This study not only reveals possible age-associated differences in ECM protein structures which are tissue-region specific, but also highlights the ability of PLF as a proteomic tool to aid in biomarker discovery.
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Affiliation(s)
- Alexander Eckersley
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
| | - Matiss Ozols
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
- Department of Human Genetics, Wellcome Sanger Institute, Genome Campus, Hinxton CB10 1SA, UK
| | - Peikai Chen
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China; (P.C.); (V.T.); (D.C.)
- Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital (HKU-SZH), Shenzhen 518053, China
| | - Vivian Tam
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China; (P.C.); (V.T.); (D.C.)
| | - Judith A. Hoyland
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
- NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Andrew Trafford
- Manchester Academic Health Science Centre, Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PL, UK;
| | - Danny Chan
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China; (P.C.); (V.T.); (D.C.)
| | - Michael J. Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
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12
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Heterogeneity of Ex Vivo and In Vivo Properties along the Length of the Abdominal Aortic Aneurysm. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11083485] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The current clinical guidelines for the management of aortic abdominal aneurysms (AAAs) overlook the structural and mechanical heterogeneity of the aortic tissue and its role in the regional weakening that drives disease progression. This study is a comprehensive investigation of the structural and biomechanical heterogeneity of AAA tissue along the length and circumference of the aorta, by means of regional ex vivo and in vivo properties. Biaxial testing and histological analysis were performed on ex vivo human aortic specimens systematically collected during open repair surgery. Wall-shear stress and three-dimensional principal strain analysis were performed to allow for in vivo regional characterization of individual aortas. A marked effect of position along the aortic length was observed in both ex vivo and in vivo properties, with the central regions corresponding to the aneurysmal sac being significantly different from the adjacent regions. The heterogeneity along the circumference of the aorta was reflected in the ex vivo biaxial response at low strains and histological properties. Present findings uniquely show the importance of regional characterization for aortic assessment and the need to correlate heterogeneity at the tissue level with non-invasive measurements aimed at improving clinical outcomes.
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13
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Latorre M, Humphrey JD. Fast, Rate-Independent, Finite Element Implementation of a 3D Constrained Mixture Model of Soft Tissue Growth and Remodeling. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 2020; 368:113156. [PMID: 32655195 PMCID: PMC7351114 DOI: 10.1016/j.cma.2020.113156] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Constrained mixture models of soft tissue growth and remodeling can simulate many evolving conditions in health as well as in disease and its treatment, but they can be computationally expensive. In this paper, we derive a new fast, robust finite element implementation based on a concept of mechanobiological equilibrium that yields fully resolved solutions and allows computation of quasi-equilibrated evolutions when imposed perturbations are slow relative to the adaptive process. We demonstrate quadratic convergence and verify the model via comparisons with semi-analytical solutions for arterial mechanics. We further examine the enlargement of aortic aneurysms for which we identify new mechanobiological insights into factors that affect the nearby non-aneurysmal segment as it responds to the changing mechanics within the diseased segment. Because this new 3D approach can be implemented within many existing finite element solvers, constrained mixture models of growth and remodeling can now be used more widely.
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Affiliation(s)
- Marcos Latorre
- Department of Biomedical Engineering Yale University, New Haven, CT, USA
| | - Jay D. Humphrey
- Department of Biomedical Engineering Yale University, New Haven, CT, USA
- Vascular Biology and Therapeutics Program Yale School of Medicine, New Haven, CT, USA
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14
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Jones B, Tonniges JR, Debski A, Albert B, Yeung DA, Gadde N, Mahajan A, Sharma N, Calomeni EP, Go MR, Hans CP, Agarwal G. Collagen fibril abnormalities in human and mice abdominal aortic aneurysm. Acta Biomater 2020; 110:129-140. [PMID: 32339711 DOI: 10.1016/j.actbio.2020.04.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 03/27/2020] [Accepted: 04/10/2020] [Indexed: 12/19/2022]
Abstract
Vascular diseases like abdominal aortic aneurysms (AAA) are characterized by a drastic remodeling of the vessel wall, accompanied with changes in the elastin and collagen content. At the macromolecular level, the elastin fibers in AAA have been reported to undergo significant structural alterations. While the undulations (waviness) of the collagen fibers is also reduced in AAA, very little is understood about changes in the collagen fibril at the sub-fiber level in AAA as well as in other vascular pathologies. In this study we investigated structural changes in collagen fibrils in human AAA tissue extracted at the time of vascular surgery and in aorta extracted from angiotensin II (AngII) infused ApoE-/- mouse model of AAA. Collagen fibril structure was examined using transmission electron microscopy and atomic force microscopy. Images were analyzed to ascertain length and depth of D-periodicity, fibril diameter and fibril curvature. Abnormal collagen fibrils with compromised D-periodic banding were observed in the excised human tissue and in remodeled regions of AAA in AngII infused mice. These abnormal fibrils were characterized by statistically significant reduction in depths of D-periods and an increased curvature of collagen fibrils. These features were more pronounced in human AAA as compared to murine samples. Thoracic aorta from Ang II-infused mice, abdominal aorta from saline-infused mice, and abdominal aorta from non-AAA human controls did not contain abnormal collagen fibrils. The structural alterations in abnormal collagen fibrils appear similar to those reported for collagen fibrils subjected to mechanical overload or chronic inflammation in other tissues. Detection of abnormal collagen could be utilized to better understand the functional properties of the underlying extracellular matrix in vascular as well as other pathologies. STATEMENT OF SIGNIFICANCE: Several vascular diseases including abdominal aortic aneurysm (AAA) are characterized by extensive remodeling in the vessel wall. Although structural alterations in elastin fibers are well characterized in vascular diseases, very little is known about the collagen fibril structure in these diseases. We report here a comprehensive ultrastructural evaluation of the collagen fibrils in AAA, using high-resolution microscopy techniques like transmission electron microscopy (TEM) and atomic force microscopy (AFM). We elucidate how abnormal collagen fibrils with compromised D-periodicity and increased fibril curvature are present in the vascular tissue in both clinical AAA as well as in murine models. We discuss how these abnormal collagen fibrils are likely a consequence of mechanical overload accompanying AAA and could impact the functional properties of the underlying tissue.
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Affiliation(s)
- Blain Jones
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Jeffrey R Tonniges
- Biophysics Graduate Program, The Ohio State University, Columbus, OH, USA
| | - Anna Debski
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Benjamin Albert
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - David A Yeung
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Nikhit Gadde
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Advitiya Mahajan
- Center for Cardiovascular Research, Nationwide Children's Hospital, Columbus, OH, USA; Department of Cardiovascular Medicine, Dalton Cardiovascular Research Center, and Medical Pharmacology and Physiology Columbia, University of Missouri, USA
| | - Neekun Sharma
- Department of Cardiovascular Medicine, Dalton Cardiovascular Research Center, and Medical Pharmacology and Physiology Columbia, University of Missouri, USA
| | - Edward P Calomeni
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Michael R Go
- Division of Vascular Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Chetan P Hans
- Center for Cardiovascular Research, Nationwide Children's Hospital, Columbus, OH, USA; Department of Cardiovascular Medicine, Dalton Cardiovascular Research Center, and Medical Pharmacology and Physiology Columbia, University of Missouri, USA.
| | - Gunjan Agarwal
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA; Biophysics Graduate Program, The Ohio State University, Columbus, OH, USA.
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15
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Kane AE, Howlett SE. Differences in Cardiovascular Aging in Men and Women. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1065:389-411. [PMID: 30051398 DOI: 10.1007/978-3-319-77932-4_25] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cardiovascular diseases increase dramatically with age in both men and women. While it is clear that advanced age allows more time for individuals to be exposed to risk factors in general, there is strong evidence that age itself is a major independent risk factor for cardiovascular disease. Indeed, there are distinct age-dependent cellular, structural, and functional changes in both the heart and blood vessels, even in individuals with no clinical evidence of cardiovascular disease. Studies in older humans and in animal models of aging indicate that this age-related remodeling is maladaptive. An emerging view is that the heart and blood vessels accumulate cellular and subcellular deficits with age and these deficits increase susceptibility to disease in older individuals. Aspects of this age-dependent remodeling of the heart and blood vessels differ between the sexes. There is also new evidence that these maladaptive changes are more prominent in older animals and humans with a high degree of frailty. These observations may help explain why men and women are susceptible to different cardiovascular diseases as they age and why frail older adults are most often affected by these diseases.
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Affiliation(s)
- Alice E Kane
- Department of Pharmacology, Dalhousie University, Halifax, NS, Canada
| | - Susan E Howlett
- Department of Pharmacology, Dalhousie University, Halifax, NS, Canada.
- Department of Medicine (Geriatric Medicine), Dalhousie University, Halifax, NS, Canada.
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16
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Xu X, Wang B, Ren C, Hu J, Greenberg DA, Chen T, Xie L, Jin K. Age-related Impairment of Vascular Structure and Functions. Aging Dis 2017; 8:590-610. [PMID: 28966804 PMCID: PMC5614324 DOI: 10.14336/ad.2017.0430] [Citation(s) in RCA: 166] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 04/30/2017] [Indexed: 12/12/2022] Open
Abstract
Among age-related diseases, cardiovascular and cerebrovascular diseases are major causes of death. Vascular dysfunction is a key characteristic of these diseases wherein age is an independent and essential risk factor. The present work will review morphological alterations of aging vessels in-depth, which includes the discussion of age-related microvessel loss and changes to vasculature involving the capillary basement membrane, intima, media, and adventitia as well as the accompanying vascular dysfunctions arising from these alterations.
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Affiliation(s)
- Xianglai Xu
- 1Zhongshan Hospital, Fudan University, Shanghai 200032, China.,2Department of Pharmacology and Neuroscience, University of North Texas Health Science Center at Fort Worth, TX 76107, USA
| | - Brian Wang
- 2Department of Pharmacology and Neuroscience, University of North Texas Health Science Center at Fort Worth, TX 76107, USA
| | - Changhong Ren
- 2Department of Pharmacology and Neuroscience, University of North Texas Health Science Center at Fort Worth, TX 76107, USA.,4Institute of Hypoxia Medicine, Xuanwu Hospital, Capital Medical University. Beijing, China
| | - Jiangnan Hu
- 2Department of Pharmacology and Neuroscience, University of North Texas Health Science Center at Fort Worth, TX 76107, USA
| | | | - Tianxiang Chen
- 6Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Liping Xie
- 3Department of Urology, the First Affiliated Hospital, Zhejiang University, Zhejiang Province, China
| | - Kunlin Jin
- 2Department of Pharmacology and Neuroscience, University of North Texas Health Science Center at Fort Worth, TX 76107, USA
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17
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Meital LT, Sandow SL, Calder PC, Russell FD. Abdominal aortic aneurysm and omega-3 polyunsaturated fatty acids: Mechanisms, animal models, and potential treatment. Prostaglandins Leukot Essent Fatty Acids 2017; 118:1-9. [PMID: 28288701 DOI: 10.1016/j.plefa.2017.02.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 01/30/2017] [Accepted: 02/07/2017] [Indexed: 01/22/2023]
Abstract
Abdominal aortic aneurysm (AAA) is an inflammatory disease associated with macrophage accumulation in the adventitia, oxidative stress, medial elastin degradation and aortic dilation. Progression of AAA is linked to increased risk of rupture, which carries a high mortality rate. Drug therapies trialled to date lack efficacy and although aneurysm repair is available for patients with large aneurysm, peri-surgical morbidity and mortality have been widely reported. Recent studies using rodent models of AAA suggest that long chain omega-3 polyunsaturated fatty acids (LC n-3 PUFAs) and their metabolites can moderate inflammation and oxidative stress perpetuated by infiltrating macrophages and intervene in the destruction of medial elastin. This review examines evidence from these animal studies and related reports of inhibition of inflammation and arrest of aneurysm development following prophylactic supplementation with LC n-3 PUFAs. The efficacy of LC n-3 PUFAs for management of existing aneurysm is unclear and further investigations involving human clinical trials are warranted.
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Affiliation(s)
- Lara T Meital
- Inflammation and Healing Research Cluster, School of Health and Sport Sciences, University of the Sunshine Coast, Queensland, Australia
| | - Shaun L Sandow
- Inflammation and Healing Research Cluster, School of Health and Sport Sciences, University of the Sunshine Coast, Queensland, Australia
| | - Philip C Calder
- Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK; NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, UK
| | - Fraser D Russell
- Inflammation and Healing Research Cluster, School of Health and Sport Sciences, University of the Sunshine Coast, Queensland, Australia.
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