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Mikami T, Dashwood MR, Kawaharada N, Furuhashi M. An Obligatory Role of Perivascular Adipose Tissue in Improved Saphenous Vein Graft Patency in Coronary Artery Bypass Grafting. Circ J 2024; 88:845-852. [PMID: 37914280 DOI: 10.1253/circj.cj-23-0581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
The gold standard graft for coronary artery bypass grafting (CABG) is the internal thoracic artery (ITA), and the second recommendation is the radial artery. However, complete revascularization with arterial grafts alone is often difficult, and the saphenous vein (SV) is the most commonly used autologous graft for CABG, because it is easier to use without restriction for the length of the graft. On the other hand, the patency of SV grafts (SVGs) is poor compared with that of arterial grafts. The SVG is conventionally harvested as a distended conduit with surrounding tissue removed, a procedure that may cause vascular damage. A no-touch technique of SVG harvesting has been reported to result in improved long-term patency in CABG comparable to that when using the ITA for grafting. Possible reasons for the excellent long-term patency of no-touch SVGs are the physical support provided by preserved surrounding perivascular adipose tissue, preservation of the vascular wall structure including the vasa vasorum, and production of adipocyte-derived factors. In this review, we discuss recent strategies aimed at improving the performance of SVGs, including no-touch harvesting, minimally invasive harvesting and mechanical support using external stents.
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Affiliation(s)
- Takuma Mikami
- Department of Cardiovascular Surgery, Sapporo Medical University
| | - Michael R Dashwood
- Surgical and Interventional Sciences, Royal Free Hospital Campus, University College London Medical School
| | | | - Masato Furuhashi
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University
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Martinez-Quinones P, McCarthy CG, Watts SW, Klee NS, Komic A, Calmasini FB, Priviero F, Warner A, Chenghao Y, Wenceslau CF. Hypertension Induced Morphological and Physiological Changes in Cells of the Arterial Wall. Am J Hypertens 2018; 31:1067-1078. [PMID: 29788246 DOI: 10.1093/ajh/hpy083] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/14/2018] [Indexed: 12/17/2022] Open
Abstract
Morphological and physiological changes in the vasculature have been described in the evolution and maintenance of hypertension. Hypertension-induced vascular dysfunction may present itself as a contributing, or consequential factor, to vascular remodeling caused by chronically elevated systemic arterial blood pressure. Changes in all vessel layers, from the endothelium to the perivascular adipose tissue (PVAT), have been described. This mini-review focuses on the current knowledge of the structure and function of the vessel layers, specifically muscular arteries: intima, media, adventitia, PVAT, and the cell types harbored within each vessel layer. The contributions of each cell type to vessel homeostasis and pathophysiological development of hypertension will be highlighted.
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Affiliation(s)
- Patricia Martinez-Quinones
- Department of Surgery, Medical College of Georgia at Augusta University, Augusta, Georgia
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Cameron G McCarthy
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Stephanie W Watts
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, USA
| | - Nicole S Klee
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Amel Komic
- Department of Surgery, Medical College of Georgia at Augusta University, Augusta, Georgia
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Fabiano B Calmasini
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Fernanda Priviero
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Alexander Warner
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Yu Chenghao
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Camilla F Wenceslau
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
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Kennedy S, Salt IP. Molecular mechanisms regulating perivascular adipose tissue - potential pharmacological targets? Br J Pharmacol 2018; 174:3385-3387. [PMID: 28940457 DOI: 10.1111/bph.13969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
LINKED ARTICLES This article is part of a themed section on Molecular Mechanisms Regulating Perivascular Adipose Tissue - Potential Pharmacological Targets? To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.20/issuetoc.
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Affiliation(s)
- Simon Kennedy
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Ian P Salt
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
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