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Lian S, Loganathan S, Mayer T, Kraft P, Sayour AA, Georgevici AI, Veres G, Karck M, Szabó G, Korkmaz-Icöz S. In a rat model of bypass DuraGraft ameliorates endothelial dysfunction of arterial grafts. Sci Rep 2024; 14:15174. [PMID: 38956161 PMCID: PMC11220020 DOI: 10.1038/s41598-024-66056-3] [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: 07/13/2023] [Accepted: 06/26/2024] [Indexed: 07/04/2024] Open
Abstract
Coronary artery bypass surgery can result in endothelial dysfunction due to ischemia/reperfusion (IR) injury. Previous studies have demonstrated that DuraGraft helps maintain endothelial integrity of saphenous vein grafts during ischemic conditions. In this study, we investigated the potential of DuraGraft to mitigate endothelial dysfunction in arterial grafts after IR injury using an aortic transplantation model. Lewis rats (n = 7-9/group) were divided in three groups. Aortic arches from the control group were prepared and rings were immediately placed in organ baths, while the aortic arches of IR and IR + DuraGraft rats were preserved in saline or DuraGraft, respectively, for 1 h before being transplanted heterotopically. After 1 h after reperfusion, the grafts were explanted, rings were prepared, and mounted in organ baths. Our results demonstrated that the maximum endothelium-dependent vasorelaxation to acetylcholine was significantly impaired in the IR group compared to the control group, but DuraGraft improved it (control: 89 ± 2%; IR: 24 ± 1%; IR + DuraGraft: 48 ± 1%, p < 0.05). Immunohistochemical analysis revealed decreased intercellular adhesion molecule-1, 4-hydroxy-2-nonenal, caspase-3 and caspase-8 expression, while endothelial cell adhesion molecule-1 immunoreactivity was increased in the IR + DuraGraft grafts compared to the IR-group. DuraGraft mitigates endothelial dysfunction following IR injury in a rat bypass model. Its protective effect may be attributed, at least in part, to its ability to reduce the inflammatory response, oxidative stress, and apoptosis.
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Affiliation(s)
- Shuo Lian
- Laboratory of Cardiac Surgery, Department of Cardiac Surgery, University Hospital Heidelberg, INF 326, 69120, Heidelberg, Germany
| | - Sivakkanan Loganathan
- Laboratory of Cardiac Surgery, Department of Cardiac Surgery, University Hospital Heidelberg, INF 326, 69120, Heidelberg, Germany
- Department of Cardiac Surgery, University Hospital Halle (Saale), 06120, Halle, Germany
| | - Tobias Mayer
- Laboratory of Cardiac Surgery, Department of Cardiac Surgery, University Hospital Heidelberg, INF 326, 69120, Heidelberg, Germany
| | - Patricia Kraft
- Laboratory of Cardiac Surgery, Department of Cardiac Surgery, University Hospital Heidelberg, INF 326, 69120, Heidelberg, Germany
| | - Alex Ali Sayour
- Laboratory of Cardiac Surgery, Department of Cardiac Surgery, University Hospital Heidelberg, INF 326, 69120, Heidelberg, Germany
- Heart and Vascular Center, Semmelweis University, Budapest, 1122, Hungary
| | - Adrian-Iustin Georgevici
- Department of Cardiac Surgery, University Hospital Halle (Saale), 06120, Halle, Germany
- Department of Anesthesiology, St. Josef Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - Gábor Veres
- Laboratory of Cardiac Surgery, Department of Cardiac Surgery, University Hospital Heidelberg, INF 326, 69120, Heidelberg, Germany
- Department of Cardiac Surgery, University Hospital Halle (Saale), 06120, Halle, Germany
| | - Matthias Karck
- Laboratory of Cardiac Surgery, Department of Cardiac Surgery, University Hospital Heidelberg, INF 326, 69120, Heidelberg, Germany
| | - Gábor Szabó
- Laboratory of Cardiac Surgery, Department of Cardiac Surgery, University Hospital Heidelberg, INF 326, 69120, Heidelberg, Germany
- Department of Cardiac Surgery, University Hospital Halle (Saale), 06120, Halle, Germany
| | - Sevil Korkmaz-Icöz
- Laboratory of Cardiac Surgery, Department of Cardiac Surgery, University Hospital Heidelberg, INF 326, 69120, Heidelberg, Germany.
- Department of Cardiac Surgery, University Hospital Halle (Saale), 06120, Halle, Germany.
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Sandner S, Misfeld M, Caliskan E, Böning A, Aramendi J, Salzberg SP, Choi YH, Perrault LP, Tekin I, Cuerpo GP, Lopez-Menendez J, Weltert LP, Böhm J, Krane M, González-Santos JM, Tellez JC, Holubec T, Ferrari E, Doros G, Vitarello CJ, Emmert MY. Clinical outcomes and quality of life after contemporary isolated coronary bypass grafting: a prospective cohort study. Int J Surg 2023; 109:707-715. [PMID: 36912566 PMCID: PMC10389413 DOI: 10.1097/js9.0000000000000259] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 02/01/2023] [Indexed: 03/14/2023]
Abstract
OBJECTIVES The objective of the European Multicenter Registry to Assess Outcomes in coronary artery bypass grafting (CABG) patients (DuraGraft Registry) was to determine clinical outcomes and quality of life (QoL) after contemporary CABG that included isolated CABG and combined CABG/valve procedures, using an endothelial damage inhibitor (DuraGraft) intraoperatively for conduit preservation. Here, we report outcomes in the patient cohort undergoing isolated CABG. METHODS The primary outcome was the composite of all-cause death, myocardial infarction (MI), or repeat revascularization (RR) [major adverse cardiac events (MACE)] at 1 year. Secondary outcomes included the composite of all-cause death, MI, RR, or stroke [major adverse cardiac and cerebrovascular events (MACCE)], and QoL. QoL was assessed with the EuroQol-5 Dimension questionnaire. Independent risk factors for MACE at 1 year were determined using Cox regression analysis. RESULTS A total of 2532 patients (mean age, 67.4±9.2 years; 82.5% male) underwent isolated CABG. The median EuroScore II was 1.4 [interquartile range (IQR), 0.9-2.3]. MACE and MACCE rates at 1 year were 6.6% and 7.8%, respectively. The rates of all-cause death, MI, RR, and stroke were 4.4, 2.0, 2.2, and 1.9%, respectively. The 30-day mortality rate was 2.3%. Age, extracardiac arteriopathy, left ventricular ejection fraction less than 50%, critical operative state, and left main disease were independent risk factors for MACE. QoL index values improved from 0.84 [IQR, 0.72-0.92] at baseline to 0.92 [IQR, 0.82-1.00] at 1 year ( P <0.0001). CONCLUSION Contemporary European patients undergoing isolated CABG have a low 1-year clinical event rate and an improved QoL.
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Affiliation(s)
| | - Martin Misfeld
- Royal Prince Alfred Hospital
- Institute of Academic Surgery at Royal Prince Alfred Hospital
- The Baird Institute of Applied Heart and Lung Surgical Research, Sydney
- Medical School, University of Sydney, Camperdown, New South Wales, Australia
- University Department of Cardiac Surgery, Leipzig Heart Center, Leipzig
| | - Etem Caliskan
- Charité Universitätsmedizin Berlin
- Deutsches Herzzentrum der Charité (DHZC), Department of Cardiothoracic and Vascular Surgery, Berlin
| | | | | | | | - Yeong-Hoon Choi
- Kerckhoff Heart Center Bad Nauheim, Campus Kerckhoff Justus-Liebig University Giessen, Giessen
| | | | - Ilker Tekin
- Manavgat Government Hospital, Manavgat
- Bahçeşehir University Faculty of Medicine, Istanbul, Turkey
| | | | | | | | | | - Markus Krane
- Yale University School of Medicine, New Haven, Connecticut
| | | | | | | | | | | | | | - Maximilian Y. Emmert
- Charité Universitätsmedizin Berlin
- Deutsches Herzzentrum der Charité (DHZC), Department of Cardiothoracic and Vascular Surgery, Berlin
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3
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Heinisch PP, Winkler B. Editorial comment on "current practice of saphenous vein graft harvesting in coronary artery bypass graft surgery: an Indian survey". Indian J Thorac Cardiovasc Surg 2023; 39:112-114. [PMID: 36785601 PMCID: PMC9918625 DOI: 10.1007/s12055-022-01451-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 11/30/2022] [Indexed: 01/01/2023] Open
Affiliation(s)
- Paul Phillip Heinisch
- German Heart Center Munich, School of Medicine, Technical University of Munich, Munich, Germany
| | - Bernhard Winkler
- Department of Cardio-Vascular Surgery, Vienna Heart Center Clinic Floridsdorf and Karl Landsteiner Institute for Cardio-Vascular Research, Vienna, Austria
- Medical University of Vienna, Vienna, Austria
- Division of Cardiac Surgery, Vienna Heart Center Clinic Floridsdorf, Brünnerstrasse 68, 1210 Vienna, Austria
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Haymet AB, Pinto N, Peden S, Cohen T, Vallely MP, McGiffin D, Naidoo R, Jenkins J, Suen JY, Fraser JF. Current intraoperative storage and handling practices of autologous bypass conduit: A survey of the royal australasian college of surgeons. Front Surg 2022; 9:956177. [PMID: 36090334 PMCID: PMC9458927 DOI: 10.3389/fsurg.2022.956177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/09/2022] [Indexed: 11/28/2022] Open
Abstract
During bypass surgery for peripheral arterial occlusive disease and ischaemic heart disease, autologous graft conduit including great saphenous veins and radial arteries are frequently stored in solution. Endothelial damage adversely affects the performance and patency of autologous bypass grafts, and intraoperative graft storage solutions have been shown to influence this process. The distribution of storage solutions currently used amongst Cardiothoracic and Vascular Surgeons from Australia and New Zealand is not well defined in the literature. The aim of this study was to determine current practices regarding autologous graft storage and handling amongst this cohort of surgeons, and discuss their potential relevance in the context of early graft failure. From this survey, the most frequently used storage solutions were heparinized saline for great saphenous veins, and pH-buffered solutions for radial arteries. Duration of storage was 30–45 min for almost half of respondents, although responses to this question were limited. Further research is required to investigate whether ischaemic endothelial injury generates a prothrombotic state, whether different storage media can alter this state, and whether this is directly associated with clinical outcomes of interest such as early graft failure.
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Affiliation(s)
- AB Haymet
- Department of Vascular Surgery, The Royal Brisbane and Women’s Hospital, Herston, QLD, Australia
- Critical Care Research Group, The Prince Charles Hospital, Chermside, QLD, Australia
- Faculty of Medicine, University of Queensland, St Lucia, QLD, Australia
- Correspondence: Andrew B Haymet
| | - N Pinto
- Department of Vascular Surgery, The Royal Brisbane and Women’s Hospital, Herston, QLD, Australia
- Herston Biofabrication Institute, Royal Brisbane and Women’s Hospital, Herston, QLD, Australia
| | - S Peden
- Department of Vascular Surgery, The Royal Brisbane and Women’s Hospital, Herston, QLD, Australia
| | - T Cohen
- Department of Vascular Surgery, The Princess Alexandra Hospital, Woolloongabba, QLD, Australia
| | - MP Vallely
- Department of Cardiovascular Surgery, Mount Sinai Morningside/Icahn School of Medicine, New York, NY, United States
| | - D McGiffin
- Department of Cardiothoracic Surgery, The Alfred Hospital, Melbourne, VIC, Australia
- Faculty of Medicine, Monash University, Melbourne, Australia
| | - R Naidoo
- Department of Cardiothoracic Surgery, The Prince Charles Hospital, Chermside, QLD, Australia
| | - J Jenkins
- Department of Vascular Surgery, The Royal Brisbane and Women’s Hospital, Herston, QLD, Australia
- Herston Biofabrication Institute, Royal Brisbane and Women’s Hospital, Herston, QLD, Australia
| | - JY Suen
- Critical Care Research Group, The Prince Charles Hospital, Chermside, QLD, Australia
- Faculty of Medicine, University of Queensland, St Lucia, QLD, Australia
| | - JF Fraser
- Critical Care Research Group, The Prince Charles Hospital, Chermside, QLD, Australia
- Faculty of Medicine, University of Queensland, St Lucia, QLD, Australia
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Szalkiewicz P, Emmert MY, Heinisch PP, Arnold Z, Crailsheim I, Mach M, Aschacher T, Grabenwöger M, Winkler B. Graft preservation confers myocardial protection during coronary artery bypass grafting. Front Cardiovasc Med 2022; 9:922357. [PMID: 35966546 PMCID: PMC9365949 DOI: 10.3389/fcvm.2022.922357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 07/07/2022] [Indexed: 11/15/2022] Open
Abstract
Background During on-pump coronary artery bypass grafting (ONCAB), graft flushing for distal anastomoses testing also perfuses the downstream myocardium. This single-center retrospective study evaluated the impact of specific preservation solutions on myocardial protection during ONCAB. Materials and methods Between July 2019 and March 2020 either DuraGraft (DG) or 0.9% Saline/Biseko (SB) was applied to 272 ONCAB. Overall, 166 patients were propensity-matched into two groups. Cardiac enzymes [high-sensitive Troponin I (hs-TnI) and creatine kinase (CK)] were evaluated 7 days post-surgery. Results Post-surgery, hs-TnI values were significantly lower from 3 to 6 h (h) up to 4 days in the DG group: 3–6 h: 4,034 ng/L [IQR 1,853–8,654] vs. 5,532 ng/L [IQR 3,633—8,862], p = 0.05; 12–24 h: 2,420 ng/L [IQR 1,408–5,782] vs. 4,166 [IQR 2,052–8,624], p < 0.01; 2 days: 1,095 ng/L [IQR 479–2,311] vs. 1,564 ng/L [IQR 659–5,057], p = 0.02 and at 4 days: 488 ng/L [IQR 232–1,061] vs. 745 ng/L [IQR 319–1,820], p = 0.03. The maximum value: 4,151 ng/L [IQR 2,056–8,621] vs. 6,349 ng/L [IQR 4,061–12,664], p < 0.01 and the median area under the curve (AUC): 6,146 ng/L/24 h [IQR 3,121–13,248] vs. 10,735 ng/L/24 h [IQR 4,859–21,484], p = 0.02 were lower in the DG group. CK values were not significantly different between groups: maximum value 690 [IQR 417–947] vs. 631 [464–979], p = 0.61 and AUC 1,986 [1,226–2,899] vs. 2,081 [1,311–3,063], p = 0.37. Conclusion Repeated graft flushing with DG resulted in lower Troponin values post-surgery suggesting enhanced myocardial protection compared to SB. Additional studies are warranted to further assess the myocardial protection properties of DG.
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Affiliation(s)
- Philipp Szalkiewicz
- Karl Landsteiner Institute for Cardiac and Vascular Surgical Research, Vienna, Austria
| | - Maximilian Y. Emmert
- Deutsches Herzzentrum Berlin, Berlin, Germany
- Clinic for Cardiovascular Surgery, Charité University Medicine Berlin, Berlin, Germany
| | - Paul P. Heinisch
- German Heart Centre Munich, Technical University Munich, Munich, Germany
| | - Zsuzsanna Arnold
- Karl Landsteiner Institute for Cardiac and Vascular Surgical Research, Vienna, Austria
- Vienna Health Association, Vienna, Austria
| | - Ingo Crailsheim
- Karl Landsteiner Institute for Cardiac and Vascular Surgical Research, Vienna, Austria
- Vienna Health Association, Vienna, Austria
| | - Markus Mach
- Medical University of Vienna, Vienna, Austria
- Clinical Department of Cardiac Surgery, University Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Thomas Aschacher
- Karl Landsteiner Institute for Cardiac and Vascular Surgical Research, Vienna, Austria
- Vienna Health Association, Vienna, Austria
- Medical University of Vienna, Vienna, Austria
| | - Martin Grabenwöger
- Karl Landsteiner Institute for Cardiac and Vascular Surgical Research, Vienna, Austria
- Vienna Health Association, Vienna, Austria
- Sigmund Freud University Vienna, Vienna, Austria
| | - Bernhard Winkler
- Karl Landsteiner Institute for Cardiac and Vascular Surgical Research, Vienna, Austria
- Vienna Health Association, Vienna, Austria
- Medical University of Vienna, Vienna, Austria
- *Correspondence: Bernhard Winkler,
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Efficacy of Intraoperative Vein Graft Storage Solutions in Preserving Endothelial Cell Integrity during Coronary Artery Bypass Surgery. J Clin Med 2022; 11:jcm11041093. [PMID: 35207364 PMCID: PMC8877698 DOI: 10.3390/jcm11041093] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/08/2022] [Accepted: 02/17/2022] [Indexed: 02/06/2023] Open
Abstract
(1) Introduction: Intraoperative preservation solutions for saphenous vein grafts may influence the endothelial structure and increase the risk of graft failure after coronary surgery. The aim of the study was to compare the efficacy of three solutions in maintaining the endothelial cell integrity of venous segments. (2) Methods: We tested the efficacy of physiological saline solution (PSS), heparinized autologous blood (HAB) and DuraGraft® in preserving the endothelium of vein segments by evaluating the degree of endothelial cell apoptosis. Two incubation times (2 and 4 h from harvesting) were used for each solution. The quantification of apoptotic cells was computed as the intensity nuclei/intensity area ratio. (3) Results: After 2 h of ischemia, the degree of apoptosis decreased progressively across the use of DuraGraft, HAB and PSS (p = 0.004), although only the difference between DuraGraft and PSS yielded a statistical significance (p = 0.002). After 4 h, a similar decrease in apoptosis was shown across the three media; however, statistical significance was not reached. The analysis of the elapsed time (2 or 4 h of incubation) showed that this was a relevant factor in maintaining the endothelial structural integrity independently from the storage solution (test for interaction of media and time p = 0.010). (4) Conclusion: Within 2 h of incubation, endothelial structural integrity depended on the incubating medium. DuraGraft better protected the SVG against ischemic-induced apoptosis when compared to saline solution. Prolonged ischemia was associated with extended endothelium damage and none of the studied solutions protected the vein graft.
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Aspirin Reduces Ischemia-Reperfusion Injury Induced Endothelial Cell Damage of Arterial Grafts in a Rodent Model. Antioxidants (Basel) 2022; 11:antiox11020177. [PMID: 35204060 PMCID: PMC8868254 DOI: 10.3390/antiox11020177] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/11/2022] [Accepted: 01/15/2022] [Indexed: 12/10/2022] Open
Abstract
Long-term graft patency determines the prognosis of revascularization after coronary artery bypass grafting (CABG). Ischemia-reperfusion (I/R) injury of the graft suffered during harvesting and after implantation might influence graft patency. Aspirin, a nonsteroidal anti-inflammatory drug improves the long-term patency of vein grafts. Whether aspirin has the same effect on arterial grafts is questionable. We aimed to characterize the beneficial effects of aspirin on arterial bypass grafts in a rodent revascularization model. We gave Lewis rats oral pretreatment of either aspirin (n = 8) or saline (n = 8) for 5 days, then aortic arches were explanted and stored in cold preservation solution. The third group (n = 8) was a non-ischemia-reperfusion control. Afterwards the aortic arches were implanted into the abdominal aorta of recipient rats followed by 2 h of reperfusion. Endothelium-dependent vasorelaxation was examined with organ bath experiments. Immunohistochemical staining were carried out. Endothelium-dependent maximal vasorelaxation improved, nitro-oxidative stress and cell apoptosis decreased, and significant endothelial protection was shown in the aspirin preconditioned group, compared to the transplanted control group. Significantly improved endothelial function and reduced I/R injury induced structural damage were observed in free arterial grafts after oral administration of aspirin. Aspirin preconditioning before elective CABG might be beneficial on free arterial graft patency.
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Tekin I, Demir M, Özdem S. Effect of different storage solutions on oxidative stress in human saphenous vein grafts. J Cardiothorac Surg 2022; 17:7. [PMID: 35034655 PMCID: PMC8762896 DOI: 10.1186/s13019-022-01752-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 01/06/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Ischemia-reperfusion injury of saphenous vein grafts (SVG) during coronary artery bypass grafting surgery negatively impacts endothelial integrity and functionality and is associated with vein graft failure. The aim of this study was to evaluate the level of oxidative stress in human SVG segments following ischemic storage in three intraoperative graft storage solutions: saline (S), autologous heparinized blood (HB) and DuraGraft (DG). METHODS 3 mm tissue rings derived from surplus SVG segments from 50 patients were stored at room temperature for 30 min in DG, S or HB. Total oxidative status (TOS) and total antioxidant status (TAS) levels were determined from which the oxidative stress index (OSI: TOS/TAS ratio) was calculated. A p-value < 0.017 was considered significant implementing a Bonferroni correction. RESULTS TOS values were significantly lower for DG stored samples in comparison to both S and HB; there was no difference between S and HB (DG: 32.6 ± 1.8, S: 39.6 ± 2.8 and HB: 40.6 ± 2.4 µmol H2O2 eqv.; DG vs. S and DG vs. HB p < 0.0001, S vs. HB p = 0.047). TAS was higher for both DG and HB in comparison to S (DG: 8.9 ± 0.9, S: 6.9 ± 1.0 and HB: 8.6 ± 0.9 mmol Trolox eqv.; DG vs S p < 0.0001, DG vs. HB p = 0.263, S vs. HB p < 0.0001). OSI differed between all groups with the lowest value for DG (DG: 3.7 ± 0.2, S: 5.8 ± 0.4 and HB: 4.7 ± 0.2 µmol H2O2 eqv./mmol Trolox eqv.; all p < 0.0001). CONCLUSIONS Saphenous veins grafts stored in DuraGraft had a lower oxidative level, higher antioxidant level and a lower oxidative stress index in comparison to saphenous vein grafts stored in saline or heparinized blood. ClinicalTrials.gov Identifier NCT02922088.
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Affiliation(s)
- Ilker Tekin
- Department of Cardiovascular Surgery, Manavgat Government Hospital, Manavgat, Turkey.
- Department of Cardiovascular Surgery, Faculty of Medicine, Bahçeşehir University, İstanbul, Turkey.
| | - Meltem Demir
- Department of Biochemistry, Medicalpark Hospital Complex, Antalya, Turkey
- Faculty of Health Science, Bilim University, Antalya, Turkey
| | - Sebahat Özdem
- Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya, Turkey
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Aschacher T, Baranyi U, Aschacher O, Eichmair E, Messner B, Zimpfer D, Moayedifar R, Laufer G, Emmert MY, Sandner SE. A Novel Endothelial Damage Inhibitor Reduces Oxidative Stress and Improves Cellular Integrity in Radial Artery Grafts for Coronary Artery Bypass. Front Cardiovasc Med 2021; 8:736503. [PMID: 34692789 PMCID: PMC8527012 DOI: 10.3389/fcvm.2021.736503] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/07/2021] [Indexed: 11/13/2022] Open
Abstract
The radial artery (RA) is a frequently used conduit in coronary artery bypass grafting (CABG). Endothelial injury incurred during graft harvesting promotes oxidative damage, which leads to graft disease and graft failure. We evaluated the protective effect of DuraGraft®, an endothelial damage inhibitor (EDI), on RA grafts. We further compared the protective effect of the EDI between RA grafts and saphenous vein grafts (SVG). Samples of RA (n = 10) and SVG (n = 13) from 23 patients undergoing CABG were flushed and preserved with either EDI or heparinized Ringer's lactate solution (RL). The effect of EDI vs. RL on endothelial damage was evaluated ex vivo and in vitro using histological analysis, immunofluorescence staining, Western blot, and scanning electron microscopy. EDI-treated RA grafts showed a significant reduction of endothelial and sub-endothelial damage. Lower level of reactive oxygen species (ROS) after EDI treatment was correlated with a reduction of hypoxic damage (eNOS and Caveolin-1) and significant increase of oxidation-reduction potential. Additionally, an increased expression of TGFβ, PDGFα/β, and HO-1 which are indicative for vascular protective function were observed after EDI exposure. EDI treatment preserves functionality and integrity of endothelial and intimal cells. Therefore, EDI may have the potential to reduce the occurrence of graft disease and failure in RA grafts in patients undergoing CABG.
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Affiliation(s)
- Thomas Aschacher
- Department of Cardio-Vascular Surgery, Clinic Floridsdorf and Karl Landsteiner Institute for Cardio-Vascular Research, Vienna, Austria.,Department of Cardiac Surgery, Medical University Vienna, Vienna, Austria
| | - Ulrike Baranyi
- Department of Cardiac Surgery, Medical University Vienna, Vienna, Austria
| | - Olivia Aschacher
- Department of Plastic, Reconstructive and Plastic Surgery, Medical University Vienna, Vienna, Austria
| | - Eva Eichmair
- Department of Cardiac Surgery, Medical University Vienna, Vienna, Austria
| | - Barbara Messner
- Department of Cardiac Surgery, Medical University Vienna, Vienna, Austria
| | - Daniel Zimpfer
- Department of Cardiac Surgery, Medical University Vienna, Vienna, Austria
| | - Roxana Moayedifar
- Department of Cardiac Surgery, Medical University Vienna, Vienna, Austria
| | - Guenther Laufer
- Department of Cardiac Surgery, Medical University Vienna, Vienna, Austria
| | - Maximilian Y Emmert
- Cardiovascular Surgery, Charite-Universitätsmedizin Berlin, Berlin, Germany.,Department of Cardiothoracic and Vascular Surgery, German Heart Institute Berlin, Berlin, Germany
| | - Sigrid E Sandner
- Department of Cardiac Surgery, Medical University Vienna, Vienna, Austria
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10
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Graft Preservation Solution DuraGraft ® Alleviates Vascular Dysfunction Following In Vitro Ischemia/Reperfusion Injury in Rats. Pharmaceuticals (Basel) 2021; 14:ph14101028. [PMID: 34681252 PMCID: PMC8538682 DOI: 10.3390/ph14101028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 09/30/2021] [Accepted: 10/05/2021] [Indexed: 11/17/2022] Open
Abstract
Vascular ischemia/reperfusion injury (IRI) in patients undergoing coronary artery bypass grafting can result in graft failure and the need for repeat revascularization procedures. DuraGraft® has been shown to protect structure and function in saphenous vein grafts against IRI. We compared the effect of DuraGraft® to saline solution on arterial grafts submitted to IRI. Rat thoracic aortic rings were harvested and immediately mounted in organ bath chambers (control, n = 7 rats) or underwent cold ischemic preservation either in saline (IR, n = 9 rats) or DuraGraft® (IR+Dura, n = 9 rats). Vascular function was measured ex vivo and immunohistochemistry was performed. Impaired maximum vasorelaxation (Rmax) to ACh in the IR-group compared to controls was ameliorated by DuraGraft®, indicating an improvement in endothelial function (Rmax to ACh (%): IR + Dura 73 ± 2 vs. IR 48 ± 3, p < 0.05). Additionally, decreased aortic ring sensitivity to ACh (pD2-value: -log 50% maximum response) seen after IR in the saline group was increased by DuraGraft® (pD2 to ACh: IR+Dura 7.1 ± 0.1 vs. IR 6.3 ± 0.2, p < 0.05). Impaired maximum contractile response to phenylephrine and high potassium chloride concentrations in the IR group compared to controls was significantly improved by DuraGraft®. DuraGraft® alleviates vascular dysfunction following IRI by reducing nitro-oxidative stress and the expression of ICAM-1, without leukocytes engagement.
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11
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Storage solutions to improve grafts preservation and longevity in coronary artery bypass grafting surgery: hype or hope? Curr Opin Cardiol 2021; 36:616-622. [PMID: 34397467 DOI: 10.1097/hco.0000000000000875] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Saphenous vein grafts (SVGs) remain the most-commonly used conduits for coronary artery bypass grafting (CABG).Significant rates of vein graft failure (VGF) remain a limitation of their use as this diminishes the long-term benefits of CABG. The choice of intraoperative SVGs preservation solution is believed to have an impact on graft patency; however, the superiority of one solution over the others remains in question. RECENT FINDINGS In the present review, we describe the pathophysiological mechanisms underlying the different phases of VGF. We also reviewed the most recent literature comparing and evaluating the efficacy of various storage solutions. These include heparinized saline, autologous heparinized blood, buffered solutions, and crystalloid cardioplegia. SUMMARY It is clear that the composition of the SVGs storage solution has an impact on vessel wall structure and function. There is a lack of translational and clinical research on the topic; thus, conclusions cannot be drawn regarding the superiority of one solution over the others in terms of VGF. Future research needs to be conducted to address this gap in the literature in order to make meaningful evidence-based recommendations on intraoperative graft storage.
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Caliskan E, Pachuk CJ, Perrault LP, Emmert MY. Preservation solutions to improve graft patency: The devil is in the detail. J Cardiothorac Surg 2020; 15:228. [PMID: 32854755 PMCID: PMC7457275 DOI: 10.1186/s13019-020-01267-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 08/19/2020] [Indexed: 12/02/2022] Open
Affiliation(s)
- Etem Caliskan
- Department of Cardiovascular Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Department of Cardiothoracic and Vascular Surgery, German Heart Center Berlin, German Heart Institute Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | | | - Louis P Perrault
- Department of Cardiac Surgery, Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Maximilian Y Emmert
- Department of Cardiovascular Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany. .,Department of Cardiothoracic and Vascular Surgery, German Heart Center Berlin, German Heart Institute Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.
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Sandner SE, Pachuk CJ, Aschacher T, Milojevic M, Caliskan E, Emmert MY. Endothelial damage inhibitors for improvement of saphenous vein graft patency in coronary artery bypass grafting. Minerva Cardioangiol 2020; 68:480-488. [PMID: 32326681 DOI: 10.23736/s0026-4725.20.05234-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The saphenous vein graft (SVG) remains the most commonly used conduit in coronary artery bypass grafting (CABG). In light of this further research must be aimed at the development of strategies to optimize SVG patency and thereby improve both short- and long-term outcomes of CABG surgery. SVG patency in large part depends on the protection of the structural and functional integrity of the vascular endothelium at the time of conduit harvesting, including optimal storage conditions to prevent endothelial damage. This review provides an overview of currently available storage and preservation solutions, including novel endothelial damage inhibitors, and their role in mitigating endothelial damage and vein graft failure.
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Affiliation(s)
- Sigrid E Sandner
- Division of Cardiac Surgery, Department of Surgery, Medical University Vienna, Vienna, Austria -
| | | | - Thomas Aschacher
- Division of Cardiac Surgery, Department of Surgery, Medical University Vienna, Vienna, Austria
| | - Milan Milojevic
- Department of Cardiothoracic Surgery, Erasmus University Medical Center, Rotterdam, the Netherlands.,Department of Cardiac Surgery and Cardiovascular Research, Dedinje Cardiovascular Institute, Belgrade, Serbia
| | - Etem Caliskan
- Department of Cardiovascular Surgery, Charite University of Medicine, Berlin, Germany.,Department of Cardiothoracic and Vascular Surgery, German Heart Institute Berlin, Berlin, Germany
| | - Maximilian Y Emmert
- Department of Cardiovascular Surgery, Charite University of Medicine, Berlin, Germany.,Department of Cardiothoracic and Vascular Surgery, German Heart Institute Berlin, Berlin, Germany
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