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Hassan N, Krieg T, Kopp A, Bach AD, Kröger N. Challenges and Pitfalls of Research Designs Involving Magnesium-Based Biomaterials: An Overview. Int J Mol Sci 2024; 25:6242. [PMID: 38892430 PMCID: PMC11172609 DOI: 10.3390/ijms25116242] [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: 04/17/2024] [Revised: 05/31/2024] [Accepted: 06/01/2024] [Indexed: 06/21/2024] Open
Abstract
Magnesium-based biomaterials hold remarkable promise for various clinical applications, offering advantages such as reduced stress-shielding and enhanced bone strengthening and vascular remodeling compared to traditional materials. However, ensuring the quality of preclinical research is crucial for the development of these implants. To achieve implant success, an understanding of the cellular responses post-implantation, proper model selection, and good study design are crucial. There are several challenges to reaching a safe and effective translation of laboratory findings into clinical practice. The utilization of Mg-based biomedical devices eliminates the need for biomaterial removal surgery post-healing and mitigates adverse effects associated with permanent biomaterial implantation. However, the high corrosion rate of Mg-based implants poses challenges such as unexpected degradation, structural failure, hydrogen evolution, alkalization, and cytotoxicity. The biocompatibility and degradability of materials based on magnesium have been studied by many researchers in vitro; however, evaluations addressing the impact of the material in vivo still need to be improved. Several animal models, including rats, rabbits, dogs, and pigs, have been explored to assess the potential of magnesium-based materials. Moreover, strategies such as alloying and coating have been identified to enhance the degradation rate of magnesium-based materials in vivo to transform these challenges into opportunities. This review aims to explore the utilization of Mg implants across various biomedical applications within cellular (in vitro) and animal (in vivo) models.
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Affiliation(s)
- Nourhan Hassan
- Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital Cologne, 50937 Cologne, Germany
- Institute for Laboratory Animal Science and Experimental Surgery, University of Aachen Medical Center, Faculty of Medicine, RWTH-Aachen University, 52074 Aachen, Germany
- Biotechnology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Thomas Krieg
- Translational Matrix Biology, Medical Faculty, University of Cologne, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50937 Cologne, Germany
- Center for Molecular Medicine (CMMC), University of Cologne, 50937 Cologne, Germany
| | | | - Alexander D. Bach
- Department of Plastic, Aesthetic and Hand Surgery, St. Antonius Hospital Eschweiler, 52249 Eschweiler, Germany
| | - Nadja Kröger
- Institute for Laboratory Animal Science and Experimental Surgery, University of Aachen Medical Center, Faculty of Medicine, RWTH-Aachen University, 52074 Aachen, Germany
- Department of Plastic, Aesthetic and Hand Surgery, St. Antonius Hospital Eschweiler, 52249 Eschweiler, Germany
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Pan C, Xu R, Chen J, Zhang Q, Deng L, Hong Q. A CO-releasing coating based on carboxymethyl chitosan-functionalized graphene oxide for improving the anticorrosion and biocompatibility of magnesium alloy stent materials. Int J Biol Macromol 2024; 271:132487. [PMID: 38768910 DOI: 10.1016/j.ijbiomac.2024.132487] [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: 03/04/2024] [Revised: 05/12/2024] [Accepted: 05/16/2024] [Indexed: 05/22/2024]
Abstract
Due to its biofunctions similar to NO, the CO gas signaling molecule has gradually shown great potential in cardiovascular biomaterials for regulating the in vivo performances after the implantation and has received increasing attention. To construct a bioactive surface with CO-releasing properties on the surface of magnesium-based alloy to augment the anticorrosion and biocompatibility, graphene oxide (GO) was firstly modified using carboxymethyl chitosan (CS), and then CO-releasing molecules (CORM401) were introduced to synthesize a novel biocompatible nanomaterial (GOCS-CO) that can release CO in the physiological environments. The GOCS-CO was further immobilized on the magnesium alloy surface modified by polydopamine coating with Zn2+ (PDA/Zn) to create a bioactive surface capable of releasing CO in the physiological environment. The outcomes showed that the CO-releasing coating can not only significantly enhance the anticorrosion and abate the corrosion degradation rate of the magnesium alloy in a simulated physiological environment, but also endow it with good hydrophilicity and a certain ability to adsorb albumin selectively. Owing to the significant enhancement of anticorrosion and hydrophilicity, coupled with the bioactivity of GOCS, the modified sample not only showed excellent ability to prevent platelet adhesion and activation and reduce hemolysis rate but also can promote endothelial cell (EC) adhesion, proliferation as well as the expression of nitric oxide (NO) and vascular endothelial growth factor (VEGF). In the case of CO release, the hemocompatibility and EC growth behaviors were further significantly improved, suggesting that CO molecules released from the surface can significantly improve the hemocompatibility and EC growth. Consequently, the present study provides a novel surface modification method that can simultaneously augment the anticorrosion and biocompatibility of magnesium-based alloys, which will strongly promote the research and application of CO-releasing bioactive coatings for surface functionalization of cardiovascular biomaterials and devices.
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Affiliation(s)
- Changjiang Pan
- School of Medical and Health Engineering, Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou 213164, China.
| | - Ruiting Xu
- The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an 223003, China
| | - Jie Chen
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Qiuyang Zhang
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Linhong Deng
- School of Medical and Health Engineering, Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou 213164, China
| | - Qingxiang Hong
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
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Hansen KN, Maehara A, Noori M, Trøan J, Fallesen CO, Hougaard M, Ellert-Gregersen J, Veien KT, Junker A, Hansen HS, Lassen JF, Jensen LO. Optimal lesion preparation before implantation of a Magmaris bioresorbable scaffold in patients with coronary artery stenosis: Rationale, design and methodology of the OPTIMIS study. Contemp Clin Trials Commun 2024; 38:101260. [PMID: 38384894 PMCID: PMC10879808 DOI: 10.1016/j.conctc.2024.101260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/02/2024] [Accepted: 01/15/2024] [Indexed: 02/23/2024] Open
Abstract
Introduction Percutaneous coronary intervention with implantation of a bioresorbable scaffold (BRS) provide the vessel support for a limited period allowing the vessel to restore normal vasomotion after degradation of the BRS, opposed to treatment with drug-eluting stents where the metal persist in the vessel wall. Late lumen loss and reduction in lumen area after implantation have been reported. The purpose of this study was to investigate whether intense pre-dilatation before BRS implantation resulted in less reduction of minimal lumen area at 6- and 12-month follow-up after implantation of a Magmaris BRS (MgBRS). Coronary imaging with optical coherence tomography (OCT) and intravascular ultrasound (IVUS) was assessed to track changes in lumen and vessel dimensions. Methods The prospective Optimal lesion PreparaTion before Implantation of the Magmaris bioresorbable scaffold In patients with coronary artery Stenosis (OPTIMIS) study randomly assigned eighty-two patients with chronic coronary syndrome to two pre-dilatation treatment strategies. Patients were randomized in a 1:1 ratio to pre-dilatation with either a non-compliant scoring balloon or a standard non-compliant balloon prior to implantation of a MgBRS. The treated segment was evaluated with OCT and IVUS at baseline, after 6 and 12 months to assess changes in lumen and vessel dimensions. The hypothesis was that more intense pre-dilatation with a non-compliant scoring balloon before MgBRS implantation can reduce the risk of late lumen reduction compared to standard pre-dilatation. The power calculation used expected MLA after 6 months (6.22 mm2 for the scoring balloon and 5.01 mm2 for the standard non-compliant balloon), power of 80 %, significance level of 0.05 and expected drop-out rate of 15 %, requiring 82 patients to be enrolled. Results Eighty-two patients were included in the study. Enrollment was from December 2020 to September 2023. Conclusion The hypothesis was that more intense pre-dilatation with a non-compliant scoring balloon before MgBRS implantation can reduce the risk of late lumen reduction compared to standard pre-dilatation.
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Affiliation(s)
- Kirstine Nørregaard Hansen
- Department of Cardiology, Odense University Hospital, Odense, Denmark
- University of Southern Denmark, Odense, Denmark
| | - Akiko Maehara
- Cardiovascular Research Foundation, New York Presbyterian Hospital, New York, USA
| | - Manijeh Noori
- Department of Cardiology, Odense University Hospital, Odense, Denmark
- University of Southern Denmark, Odense, Denmark
| | - Jens Trøan
- Department of Cardiology, Odense University Hospital, Odense, Denmark
| | | | - Mikkel Hougaard
- Department of Cardiology, Odense University Hospital, Odense, Denmark
| | | | | | - Anders Junker
- Department of Cardiology, Odense University Hospital, Odense, Denmark
| | - Henrik Steen Hansen
- Department of Cardiology, Odense University Hospital, Odense, Denmark
- University of Southern Denmark, Odense, Denmark
| | - Jens Flensted Lassen
- Department of Cardiology, Odense University Hospital, Odense, Denmark
- University of Southern Denmark, Odense, Denmark
| | - Lisette Okkels Jensen
- Department of Cardiology, Odense University Hospital, Odense, Denmark
- University of Southern Denmark, Odense, Denmark
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Brami P, Fischer Q, Pham V, Seret G, Varenne O, Picard F. Evolution of Coronary Stent Platforms: A Brief Overview of Currently Used Drug-Eluting Stents. J Clin Med 2023; 12:6711. [PMID: 37959177 PMCID: PMC10648187 DOI: 10.3390/jcm12216711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 10/16/2023] [Accepted: 10/20/2023] [Indexed: 11/15/2023] Open
Abstract
Cardiovascular disease, including ischemic heart disease, is the leading cause of death worldwide, and percutaneous coronary interventions (PCIs) have been demonstrated to improve the prognosis of these patients on top of optimal medical therapy. PCIs have evolved from plain old balloon angioplasty to coronary stent implantation at the end of the last century. There has been a constant technical and scientific improvement in stent technology from bare metal stents to the era of drug-eluting stents (DESs) to overcome clinical challenges such as target lesion failure related to in-stent restenosis or stent thrombosis. A better understanding of the underlying mechanisms of these adverse events has led DESs to evolve from first-generation DESs to thinner and ultrathin third-generation DESs with improved polymer biocompatibility that seems to have reached a peak in efficiency. This review aims to provide a brief historical overview of the evolution of coronary DES platforms and an update on clinical studies and major characteristics of the most currently used DESs.
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Affiliation(s)
- Pierre Brami
- Department of Cardiology, Cochin Hospital, Hôpitaux Universitaire Paris Centre, Assistance Publique des Hôpitaux de Paris, 75014 Paris, France; (P.B.); (Q.F.); (V.P.); (G.S.); (O.V.)
- Département Santé, Université Paris-Cité, 75006 Paris, France
| | - Quentin Fischer
- Department of Cardiology, Cochin Hospital, Hôpitaux Universitaire Paris Centre, Assistance Publique des Hôpitaux de Paris, 75014 Paris, France; (P.B.); (Q.F.); (V.P.); (G.S.); (O.V.)
| | - Vincent Pham
- Department of Cardiology, Cochin Hospital, Hôpitaux Universitaire Paris Centre, Assistance Publique des Hôpitaux de Paris, 75014 Paris, France; (P.B.); (Q.F.); (V.P.); (G.S.); (O.V.)
| | - Gabriel Seret
- Department of Cardiology, Cochin Hospital, Hôpitaux Universitaire Paris Centre, Assistance Publique des Hôpitaux de Paris, 75014 Paris, France; (P.B.); (Q.F.); (V.P.); (G.S.); (O.V.)
- Département Santé, Université Paris-Cité, 75006 Paris, France
| | - Olivier Varenne
- Department of Cardiology, Cochin Hospital, Hôpitaux Universitaire Paris Centre, Assistance Publique des Hôpitaux de Paris, 75014 Paris, France; (P.B.); (Q.F.); (V.P.); (G.S.); (O.V.)
- Département Santé, Université Paris-Cité, 75006 Paris, France
| | - Fabien Picard
- Department of Cardiology, Cochin Hospital, Hôpitaux Universitaire Paris Centre, Assistance Publique des Hôpitaux de Paris, 75014 Paris, France; (P.B.); (Q.F.); (V.P.); (G.S.); (O.V.)
- Département Santé, Université Paris-Cité, 75006 Paris, France
- INSERM U970, Paris Cardiovascular Research Center (PARCC), European Georges Pompidou Hospital, 75015 Paris, France
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Wu M, Xun M, Chen Y. Adaptation of Vascular Smooth Muscle Cell to Degradable Metal Stent Implantation. ACS Biomater Sci Eng 2023. [PMID: 37364226 DOI: 10.1021/acsbiomaterials.3c00637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Iron-, magnesium-, or zinc-based metal vessel stents support vessel expansion at the period early after implantation and degrade away after vascular reconstruction, eliminating the side effects due to the long stay of stent implants in the body and the risks of restenosis and neoatherosclerosis. However, emerging evidence has indicated that their degradation alters the vascular microenvironment and induces adaptive responses of surrounding vessel cells, especially vascular smooth muscle cells (VSMCs). VSMCs are highly flexible cells that actively alter their phenotype in response to the stenting, similarly to what they do during all stages of atherosclerosis pathology, which significantly influences stent performance. This Review discusses how biodegradable metal stents modify vascular conditions and how VSMCs respond to various chemical, biological, and physical signals attributable to stent implantation. The focus is placed on the phenotypic adaptation of VSMCs and the clinical complications, which highlight the importance of VSMC transformation in future stent design.
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Affiliation(s)
- Meichun Wu
- Hengyang Medical School, University of South China, Hengyang, Hunan 410001, China
- School of Nursing, University of South China, Hengyang, Hunan 410001, China
| | - Min Xun
- Institute of Pharmacy and Pharmacology, School of Pharmaceutical Science, University of South China, Hengyang, Hunan 410001, China
| | - Yuping Chen
- Hengyang Medical School, University of South China, Hengyang, Hunan 410001, China
- Institute of Pharmacy and Pharmacology, School of Pharmaceutical Science, University of South China, Hengyang, Hunan 410001, China
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Kovacevic S, Ali W, Martínez-Pañeda E, LLorca J. Phase-field modeling of pitting and mechanically-assisted corrosion of Mg alloys for biomedical applications. Acta Biomater 2023; 164:641-658. [PMID: 37068554 DOI: 10.1016/j.actbio.2023.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 03/21/2023] [Accepted: 04/07/2023] [Indexed: 04/19/2023]
Abstract
A phase-field model is developed to simulate the corrosion of Mg alloys in body fluids. The model incorporates both Mg dissolution and the transport of Mg ions in solution, naturally predicting the transition from activation-controlled to diffusion-controlled bio-corrosion. In addition to uniform corrosion, the presented framework captures pitting corrosion and accounts for the synergistic effect of aggressive environments and mechanical loading in accelerating corrosion kinetics. The model applies to arbitrary 2D and 3D geometries with no special treatment for the evolution of the corrosion front, which is described using a diffuse interface approach. Experiments are conducted to validate the model and a good agreement is attained against in vitro measurements on Mg wires. The potential of the model to capture mechano-chemical effects during corrosion is demonstrated in case studies considering Mg wires in tension and bioabsorbable coronary Mg stents subjected to mechanical loading. The proposed methodology can be used to assess the in vitro and in vivo service life of Mg-based biomedical devices and optimize the design taking into account the effect of mechanical deformation on the corrosion rate. The model has the potential to advocate further development of Mg alloys as a biodegradable implant material for biomedical applications. STATEMENT OF SIGNIFICANCE: A physically-based model is developed to simulate the corrosion of bioabsorbable metals in environments that resemble biological fluids. The model captures pitting corrosion and incorporates the role of mechanical fields in enhancing the corrosion of bioabsorbable metals. Model predictions are validated against dedicated in vitro corrosion experiments on Mg wires. The potential of the model to capture mechano-chemical effects is demonstrated in representative examples. The simulations show that the presence of mechanical fields leads to the formation of cracks accelerating the failure of Mg wires, whereas pitting severely compromises the structural integrity of coronary Mg stents. This work extends phase-field modeling to bioengineering and provides a mechanistic tool for assessing the service life of bioabsorbable metallic biomedical devices.
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Affiliation(s)
- Sasa Kovacevic
- Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK.
| | - Wahaaj Ali
- IMDEA Materials Institute, C/Eric Kandel 2, Getafe 28906, Madrid, Spain; Department of Material Science and Engineering, Universidad Carlos III de Madrid, Leganes 28911, Madrid, Spain
| | - Emilio Martínez-Pañeda
- Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK.
| | - Javier LLorca
- IMDEA Materials Institute, C/Eric Kandel 2, Getafe 28906, Madrid, Spain; Department of Materials Science, Polytechnic University of Madrid, E. T. S. de Ingenieros de Caminos, 28040 Madrid, Spain.
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Bandyopadhyay A, Mitra I, Goodman SB, Kumar M, Bose S. Improving Biocompatibility for Next Generation of Metallic Implants. PROGRESS IN MATERIALS SCIENCE 2023; 133:101053. [PMID: 36686623 PMCID: PMC9851385 DOI: 10.1016/j.pmatsci.2022.101053] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The increasing need for joint replacement surgeries, musculoskeletal repairs, and orthodontics worldwide prompts emerging technologies to evolve with healthcare's changing landscape. Metallic orthopaedic materials have a shared application history with the aerospace industry, making them only partly efficient in the biomedical domain. However, suitability of metallic materials in bone tissue replacements and regenerative therapies remains unchallenged due to their superior mechanical properties, eventhough they are not perfectly biocompatible. Therefore, exploring ways to improve biocompatibility is the most critical step toward designing the next generation of metallic biomaterials. This review discusses methods of improving biocompatibility of metals used in biomedical devices using surface modification, bulk modification, and incorporation of biologics. Our investigation spans multiple length scales, from bulk metals to the effect of microporosities, surface nanoarchitecture, and biomolecules such as DNA incorporation for enhanced biological response in metallic materials. We examine recent technologies such as 3D printing in alloy design and storing surface charge on nanoarchitecture surfaces, metal-on-metal, and ceramic-on-metal coatings to present a coherent and comprehensive understanding of the subject. Finally, we consider the advantages and challenges of metallic biomaterials and identify future directions.
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Affiliation(s)
- Amit Bandyopadhyay
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920
| | - Indranath Mitra
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920
| | - Stuart B. Goodman
- Department of Orthopedic Surgery, Stanford University Medical Center, Redwood City, CA 94063
| | | | - Susmita Bose
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920
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Drobyshev A, Gurganchova Z, Redko N, Komissarov A, Bazhenov V, Statnik ES, Sadykova IA, Sviridov E, Salimon AI, Korsunsky AM, Zayratyants O, Ushmarov D, Yanushevich O. An In Vivo Rat Study of Bioresorbable Mg-2Zn-2Ga Alloy Implants. Bioengineering (Basel) 2023; 10:bioengineering10020273. [PMID: 36829768 PMCID: PMC9952904 DOI: 10.3390/bioengineering10020273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/10/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
In the present study, pins made from the novel Mg-2Zn-2Ga alloy were installed within the femoral bones of six Wistar rats. The level of bioresorption was assessed after 1, 3, and 6 months by radiography, histology, SEM, and EDX. Significant bioresorption was evident after 3 months, and complete dissolution of the pins occurred at 6 months after the installation. No pronounced gas cavities could be found at the pin installation sites throughout the postoperative period. The animals' blood parameters showed no signs of inflammation or toxication. These findings are sufficiently encouraging to motivate further research to broaden the experimental coverage to increase the number of observed animals and to conduct tests involving other, larger animals.
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Affiliation(s)
- Alexey Drobyshev
- Laboratory of Medical Bioresorption and Bioresistance, Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
| | - Zaira Gurganchova
- Laboratory of Medical Bioresorption and Bioresistance, Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
| | - Nikolay Redko
- Laboratory of Medical Bioresorption and Bioresistance, Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
- Correspondence: ; Tel.: +7-916-954-44-44
| | - Alexander Komissarov
- Laboratory of Medical Bioresorption and Bioresistance, Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
- Laboratory of Hybrid Nanostructured Materials, National University of Science and Technology “MISiS”, 119049 Moscow, Russia
| | - Viacheslav Bazhenov
- Casting Department, National University of Science and Technology “MISiS”, 119049 Moscow, Russia
| | - Eugene S. Statnik
- HSM Laboratory, Center for Digital Engineering, Skoltech, 121205 Moscow, Russia
| | - Iuliia A. Sadykova
- HSM Laboratory, Center for Digital Engineering, Skoltech, 121205 Moscow, Russia
| | - Eugeny Sviridov
- Laboratory of Medical Bioresorption and Bioresistance, Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
| | - Alexey I. Salimon
- HSM Laboratory, Center for Digital Engineering, Skoltech, 121205 Moscow, Russia
| | - Alexander M. Korsunsky
- HSM Laboratory, Center for Digital Engineering, Skoltech, 121205 Moscow, Russia
- Trinity College, Oxford OX1 3BH, UK
| | - Oleg Zayratyants
- Laboratory of the Clinical Medical Center, Moscow State University of Medicine and Dentistry, 111398 Moscow, Russia
| | - Denis Ushmarov
- Educational and Production Department, Kuban State Medical University, 350912 Krasnodar, Russia
| | - Oleg Yanushevich
- Laboratory of Medical Bioresorption and Bioresistance, Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
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Oliver AA, Carlson KD, Bilgin C, Arturo Larco JL, Kadirvel R, Guillory RJ, Dragomir Daescu D, Kallmes DF. Bioresorbable flow diverters for the treatment of intracranial aneurysms: review of current literature and future directions. J Neurointerv Surg 2023; 15:178-182. [PMID: 35636949 PMCID: PMC9708930 DOI: 10.1136/neurintsurg-2022-018941] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/15/2022] [Indexed: 01/17/2023]
Abstract
The use of flow diverters is a rapidly growing endovascular approach for the treatment of intracranial aneurysms. All FDA-approved flow diverters are composed of nitinol or cobalt-chromium, which will remain in the patient for the duration of their life. Bioresorbable flow diverters have been proposed by several independent investigators as the next generation of flow diverting devices. These devices aim to serve their transient function of occluding and healing the aneurysm prior to being safely resorbed by the body, eliminating complications associated with the permanent presence of conventional flow diverters. Theoretical advantages of bioresorbable flow diverters include (1) reduction in device-induced thrombosis; (2) reduction in chronic inflammation and device-induced stenosis; (3) reduction in side branch occlusion; (4) restoration of physiological vasomotor function; (5) reduction in imaging artifacts; and (6) use in pediatric applications. Advances made in the similar bioresorbable coronary stenting field highlight some of these advantages and demonstrate the feasibility and safety of bioresorbable endovascular devices in the clinic. The current work aims to review the progress of bioresorbable flow diverters, identify opportunities for further investigation, and ultimately stimulate the advancement of this technology.
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Affiliation(s)
- Alexander A Oliver
- Biomedical Engineering and Physiology, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota, USA
- Radiology, Mayo Clinic, Rochester, Minnesota, USA
- Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
| | - Kent D Carlson
- Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
| | - Cem Bilgin
- Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | | | | | - Roger J Guillory
- Biomedical Engineering, Michigan Technological University, Houghton, Michigan, USA
| | - Dan Dragomir Daescu
- Biomedical Engineering and Physiology, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota, USA
- Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
| | - David F Kallmes
- Biomedical Engineering and Physiology, Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota, USA
- Radiology, Mayo Clinic, Rochester, Minnesota, USA
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10
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Zong J, He Q, Liu Y, Qiu M, Wu J, Hu B. Advances in the development of biodegradable coronary stents: A translational perspective. Mater Today Bio 2022; 16:100368. [PMID: 35937578 PMCID: PMC9352968 DOI: 10.1016/j.mtbio.2022.100368] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/25/2022] [Accepted: 07/13/2022] [Indexed: 11/17/2022] Open
Abstract
Implantation of cardiovascular stents is an important therapeutic method to treat coronary artery diseases. Bare-metal and drug-eluting stents show promising clinical outcomes, however, their permanent presence may create complications. In recent years, numerous preclinical and clinical trials have evaluated the properties of bioresorbable stents, including polymer and magnesium-based stents. Three-dimensional (3D) printed-shape-memory polymeric materials enable the self-deployment of stents and provide a novel approach for individualized treatment. Novel bioresorbable metallic stents such as iron- and zinc-based stents have also been investigated and refined. However, the development of novel bioresorbable stents accompanied by clinical translation remains time-consuming and challenging. This review comprehensively summarizes the development of bioresorbable stents based on their preclinical/clinical trials and highlights translational research as well as novel technologies for stents (e.g., bioresorbable electronic stents integrated with biosensors). These findings are expected to inspire the design of novel stents and optimization approaches to improve the efficacy of treatments for cardiovascular diseases. Bioresorbable stents can overcome the limitations of non-degradable stents. 3D printing of shape-memory polymeric stents can lead to better clinical outcomes. Advances in Mg-, Fe- and Zn-based stents from a translational perspective. Electronic stents integrated with biosensors can covey stent status in real time. Development in the assessment of stent performance in vivo.
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Affiliation(s)
- Jiabin Zong
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Quanwei He
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yuxiao Liu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Min Qiu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jiehong Wu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Corresponding author.
| | - Bo Hu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Corresponding author.
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Zeng Y, Guan Z, Linsley CS, Pan S, Liu J, Wu BM, Li X. Experimental study on novel biodegradable Zn-Fe-Si alloys. J Biomed Mater Res B Appl Biomater 2022; 110:2266-2275. [PMID: 35522226 PMCID: PMC9378461 DOI: 10.1002/jbm.b.35075] [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: 07/30/2021] [Revised: 03/24/2022] [Accepted: 04/07/2022] [Indexed: 11/10/2022]
Abstract
Bioabsorbable metals are increasingly attracting attention for their potential use as materials for degradable implant devices. Zinc (Zn) alloys have shown great promises due to their good biocompatibility and favorable degradation rate. However, it has been difficult to maintain an appropriate balance among strength, ductility, biocompatibility, and corrosion rate for Zn alloys historically. In this study, the microstructure, chemical composition, mechanical properties, biocompatibility, and corrosion rate of a new ternary zinc-iron-silicon (Zn-Fe-Si) alloy system was studied as a novel material for potential biodegradable implant applications. The results demonstrated that the in situ formed Fe-Si intermetallic phases enhanced the mechanical strength of the material while maintaining a favorable ductility. With Fe-Si reinforcements, the microhardness of the Zn alloys was enhanced by up to 43%. The tensile strength was increased by up to 76% while elongation to failure remained above 30%. Indirect cytotoxicity testing showed the Zn-Fe-Si system had good biocompatibility. Immersion testing revealed the corrosion rate of Zn-Fe-Si system was not statistically different from pure Zn. To understand the underlying phase formation mechanism, the reaction process in this ternary system during the processing was also studied via phase evolution and Gibbs free energy analysis. The results suggest the Zn-Fe-Si ternary system is a promising new material for bioabsorbable metallic medical devices.
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Affiliation(s)
- Yuxin Zeng
- Department of Mechanical and Aerospace Engineering, Samueli School of Engineering, University of California, Los Angeles, CA 90095, USA
| | - Zeyi Guan
- Department of Mechanical and Aerospace Engineering, Samueli School of Engineering, University of California, Los Angeles, CA 90095, USA
| | - Chase S. Linsley
- Department of Bioengineering, Samueli School of Engineering, University of California, Los Angeles, CA 90095, USA
| | - Shuaihang Pan
- Department of Mechanical and Aerospace Engineering, Samueli School of Engineering, University of California, Los Angeles, CA 90095, USA
| | - Jingke Liu
- Department of Mechanical and Aerospace Engineering, Samueli School of Engineering, University of California, Los Angeles, CA 90095, USA
| | - Benjamin M. Wu
- Department of Bioengineering, Samueli School of Engineering, University of California, Los Angeles, CA 90095, USA
- Department of Materials Science and Engineering, Samueli School of Engineering, University of California, Los Angeles, CA 90095, USA
- Division of Advanced Prosthodontics, School of Dentistry, University of California, Los Angeles, CA 90095, USA
- Department of Orthopedic Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Xiaochun Li
- Department of Mechanical and Aerospace Engineering, Samueli School of Engineering, University of California, Los Angeles, CA 90095, USA
- Department of Materials Science and Engineering, Samueli School of Engineering, University of California, Los Angeles, CA 90095, USA
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Wei X, Ma J, Ma S, Liu P, Qing H, Zhao Q. Enhanced anti-corrosion and biocompatibility of a functionalized layer formed on ZK60 Mg alloy via hydroxyl (OH -) ion implantation. Colloids Surf B Biointerfaces 2022; 216:112533. [PMID: 35594753 DOI: 10.1016/j.colsurfb.2022.112533] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 04/12/2022] [Accepted: 04/29/2022] [Indexed: 11/18/2022]
Abstract
Magnesium and its alloys have piqued the interest of researchers due to their promising mechanical properties and biocompatibility. Moreover, the excessively fast corrosion rate of Mg alloys impedes their development in biomedical fields. Inspired by conventional ion implantation, a less-toxic functional group (hydroxyl) is used as the ion source to bombard the ZK60 Mg alloy surface to form a functionalized oxide layer. The surface characterization, corrosion resistance, and biocompatibility are systematically investigated before and after hydroxyl ion implantation. A smoother surface mainly constituted of hydroxide/oxide is formed for the treated samples. The formed functionalized layer significantly improves the corrosion resistance of the ZK60 Mg alloy substrate and the proliferation of MC3T3-E1 cells, as demonstrated by electrochemical, immersion, and in vitro cytocompatibility tests. In summary, less-toxic functional ion implantation can be an effective strategy for preventing corrosion of Mg alloy implants and promoting their biocompatibility.
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Affiliation(s)
- Xian Wei
- Center for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements (MOE), School of Physics, Beijing Institute of Technology, Beijing 100081, China; Department of science, Taiyuan Institute of Technology, Taiyuan 030008, China
| | - Jiyang Ma
- Center for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements (MOE), School of Physics, Beijing Institute of Technology, Beijing 100081, China
| | - Sujie Ma
- Center for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements (MOE), School of Physics, Beijing Institute of Technology, Beijing 100081, China
| | - Pinduo Liu
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Hong Qing
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Qing Zhao
- Center for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements (MOE), School of Physics, Beijing Institute of Technology, Beijing 100081, China; Beijing Academy of Quantum Information Sciences, Beijing 100193, China.
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Sun L, Li JJ, Xu YK, Xie YM, Wang SS, Zhang ZW. Initial status and 3-month results relating to the use of biodegradable nitride iron stents in children and the evaluation of right ventricular function. Front Cardiovasc Med 2022; 9:914370. [PMID: 35979021 PMCID: PMC9376250 DOI: 10.3389/fcvm.2022.914370] [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: 04/06/2022] [Accepted: 07/05/2022] [Indexed: 11/15/2022] Open
Abstract
Background Pulmonary artery stenosis is often associated with congenital heart disease. The aim of the study was to evaluate the efficacy and safety of stenting for branch pulmonary artery stenosis using a biodegradable nitride iron stent (IBS® Angel™) and right ventricular systolic and diastolic function. Methods From July 2021 to February 2022, a total of 11 cases (ages ranged from 36 to 86 months old) were included in this pre and post-intervention, prospective, cohort and preclinical study. All cases underwent transthoracic echocardiographic (TTE), chest radiography, along with computed tomography (256-slice scanner, multiple-detector) and right heart catheterization. Different types of biodegradable nitride iron stents were implanted. TTE was performed serially 1 day, 1 month and 3 months after the procedure to evaluate the rate of restenosis and right ventricular function. Results Stenting was successful in 11 patients. There were no major adverse cardiovascular events related to the device or to the procedure. Blood perfusion in the branch pulmonary artery was improved immediately. At follow-up, there was no significant restenosis that required re-intervention. None of the patients suffered from in-stent thrombosis, vascular embolism, stent displacement or heart failure. Compared with normal values, there were statistical with regards to FAC, E/A and E′/A′. Furthermore, we found that TAPSE correlated significantly with pulsed Doppler S wave (p = 0.008) and left ventricular ejection fraction (p < 0.01). The early trans-tricuspid inflow velocities E/E′ (tissue doppler at the lateral tricuspid annulus) correlated significantly with E′/A′ (p = 0.009). FAC and E′/A′ were statistically different from those prior to stenting (p = 0.041 and p = 0.035) when tested one month postoperatively. At three months postoperatively, only E/A showed a statistical difference (p = 0.015). Conclusion Our analysis suggests that biodegradable nitride iron stents are feasible, safe, and effective in children. Some small improvements were observed in right ventricular systolic and diastolic function after successful transcatheter intervention, although change was not statistically significant due to the small sample number. (A clinical Trial to Evaluate the Safety and Efficacy of IBS Angel in Patients With Pulmonary Artery Stenosis (IRIS); NCT04973540).
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Al Nooryani A, Aboushokka W, AlBaba B, Kerfes J, Abudaqa L, Bhatia A, Mansoor A, Nageeb R, Aleksandric S, Beleslin B. Long-Term Performance of the Magmaris Drug-Eluting Bioresorbable Metallic Scaffold in All-Comers Patients’ Population. J Clin Med 2022; 11:jcm11133726. [PMID: 35807011 PMCID: PMC9267727 DOI: 10.3390/jcm11133726] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 01/25/2023] Open
Abstract
Background: The long-term efficacy and safety of bioresorbable vascular scaffolds (BVS) in real world clinical practice including Magmaris need to be elucidated to better understand performance of this new and evolutive technology. The aim of this study was to evaluate long-term performance of Magmaris, drug-eluting bioresorbable metallic scaffold, in all-comers patients’ population. Methods: We included in this prospective registry first 54 patients (54 ± 11 years; male 46) treated with Magmaris, with at least 30 months of follow-up. Diabetes mellitus and acute coronary syndrome were present in 33 (61%) and 30 (56%) of the patients, respectively. Patients were followed for device- and patient-oriented cardiac events during a median follow-up of 47 months (DOCE–cardiac death, target vessel myocardial infarction, and target lesion revascularization; POCE–all cause death, any myocardial infarction, any revascularization). Results: Event-free survivals for DOCE and POCE were 86.8% and 79.2%, respectively. The rate of DOCE was 7/54 (13%), including in total target vessel myocardial infarction in two patients (4%), target lesion revascularization in six patients (11%), and no cardiac deaths. The rate of POCE was 11/54 (21%), including in total any myocardial infarctions in 3 patients (6%), any revascularization in 11 patients (20%), and no deaths. Definite Magmaris thrombosis occurred in two patients (3.7%), and in-scaffold restenosis developed in five patients (9.3%). Variables associated with DOCE were implantation of ≥2 Magmaris BVS (HR: 5.4; 95%CI: 1.21–24.456; p = 0.027) and total length of Magmaris BVS ≥ 40 mm (HR: 6.4; 95%CI: 1.419–28.855; p = 0.016), whereas previous PCI was the only independent predictor of POCE (HR: 7.4; 95%CI: 2.216–24.613; p = 0.001). Conclusions: The results of the long-term clinical outcome following Magmaris implantation in patients with complex clinical and angiographic features were acceptable and promising. Patients with multi-BVS and longer multi-BVS in lesion implantation were associated with worse clinical outcome.
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Affiliation(s)
- Arif Al Nooryani
- Al Qassimi Hospital, Sharjah 3500, United Arab Emirates; (A.A.N.); (W.A.); (B.A.); (J.K.); (L.A.); (A.B.); (A.M.); (R.N.)
| | - Wael Aboushokka
- Al Qassimi Hospital, Sharjah 3500, United Arab Emirates; (A.A.N.); (W.A.); (B.A.); (J.K.); (L.A.); (A.B.); (A.M.); (R.N.)
| | - Bassam AlBaba
- Al Qassimi Hospital, Sharjah 3500, United Arab Emirates; (A.A.N.); (W.A.); (B.A.); (J.K.); (L.A.); (A.B.); (A.M.); (R.N.)
| | - Jalal Kerfes
- Al Qassimi Hospital, Sharjah 3500, United Arab Emirates; (A.A.N.); (W.A.); (B.A.); (J.K.); (L.A.); (A.B.); (A.M.); (R.N.)
| | - Loai Abudaqa
- Al Qassimi Hospital, Sharjah 3500, United Arab Emirates; (A.A.N.); (W.A.); (B.A.); (J.K.); (L.A.); (A.B.); (A.M.); (R.N.)
| | - Amit Bhatia
- Al Qassimi Hospital, Sharjah 3500, United Arab Emirates; (A.A.N.); (W.A.); (B.A.); (J.K.); (L.A.); (A.B.); (A.M.); (R.N.)
| | - Anoop Mansoor
- Al Qassimi Hospital, Sharjah 3500, United Arab Emirates; (A.A.N.); (W.A.); (B.A.); (J.K.); (L.A.); (A.B.); (A.M.); (R.N.)
| | - Ruwaide Nageeb
- Al Qassimi Hospital, Sharjah 3500, United Arab Emirates; (A.A.N.); (W.A.); (B.A.); (J.K.); (L.A.); (A.B.); (A.M.); (R.N.)
| | | | - Branko Beleslin
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
- Correspondence:
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Loffredo S, Gambaro S, Copes F, Paternoster C, Giguère N, Vedani M, Mantovani D. Effect of silver in thermal treatments of Fe-Mn-C degradable metals: Implications for stent processing. Bioact Mater 2022; 12:30-41. [PMID: 35087961 PMCID: PMC8777259 DOI: 10.1016/j.bioactmat.2021.10.020] [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: 10/20/2020] [Revised: 04/15/2021] [Accepted: 10/18/2021] [Indexed: 11/26/2022] Open
Abstract
Twinning-induced plasticity (TWIP) steels are considered excellent materials for manufacturing products requiring extremely high mechanical properties for various applications including thin medical devices, such as biodegradable intravascular stents. It is also proven that the addition of Ag can guarantee an appropriate degradation while implanted in human body without affecting its bioactive properties. In order to develop an optimized manufacturing process for thin stents, the effect of Ag on the recrystallization behavior of TWIP steels needs to be elucidated. This is of major importance since manufacturing stents involves several intermediate recrystallization annealing treatments. In this work, the recrystallization mechanism of two Fe-Mn-C steels with and without Ag was thoroughly investigated by microstructural and mechanical analyses. It was observed that Ag promoted a finer microstructure with a different texture evolution, while the recrystallization kinetics resulted unaffected. The presence of Ag also reduced the effectiveness of the recrystallization treatment. This behavior was attributed to the presence of Ag-rich second phase particles, precipitation of carbides and to the preferential development of grains possessing a {111} orientation upon thermal treatment. The prominence of {111} grains can also give rise to premature twinning, explaining the role of Ag in reducing the ductility of TWIP steels already observed in other works. Furthermore, in vitro biological performances were unaffected by Ag. These findings could allow the design of efficient treatments for supporting the transformation of Fe-Mn-C steels alloyed with Ag into commercial products. Recrystallization of a TWIP steel is hampered by the presence of Ag and carbides. Ag promotes preferential formation of {111} grains during thermal treatments. Ag broadens the Schmid factor distribution, leading to a reduction in ductility. Ag does not affect cytotoxicity and hemocompatibility. Annealing treatment above 900 °C is required for the Fe-Mn-C-Ag system.
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16
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Cohen JE, Garcia-Garcia HM, Hellinga D, Kolodgie F, Virmani R, Finn A, Waksman R. Coronary artery bypass at a drug-eluting resorbable magnesium scaffold site in a porcine model. CARDIOVASCULAR REVASCULARIZATION MEDICINE 2022; 42:109-113. [DOI: 10.1016/j.carrev.2022.02.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 02/24/2022] [Indexed: 11/03/2022]
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17
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Zhang ZQ, Yang YX, Li JA, Zeng RC, Guan SK. Advances in coatings on magnesium alloys for cardiovascular stents - A review. Bioact Mater 2021; 6:4729-4757. [PMID: 34136723 PMCID: PMC8166647 DOI: 10.1016/j.bioactmat.2021.04.044] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/27/2021] [Accepted: 04/27/2021] [Indexed: 12/15/2022] Open
Abstract
Magnesium (Mg) and its alloys, as potential biodegradable materials, have drawn wide attention in the cardiovascular stent field because of their appropriate mechanical properties and biocompatibility. Nevertheless, the occurrence of thrombosis, inflammation, and restenosis of implanted Mg alloy stents caused by their poor corrosion resistance and insufficient endothelialization restrains their anticipated clinical applications. Numerous surface treatment tactics have mainly striven to modify the Mg alloy for inhibiting its degradation rate and enduing it with biological functionality. This review focuses on highlighting and summarizing the latest research progress in functionalized coatings on Mg alloys for cardiovascular stents over the last decade, regarding preparation strategies for metal oxide, metal hydroxide, inorganic nonmetallic, polymer, and their composite coatings; and the performance of these strategies in regulating degradation behavior and biofunction. Potential research direction is also concisely discussed to help guide biological functionalized strategies and inspire further innovations. It is hoped that this review can give assistance to the surface modification of cardiovascular Mg-based stents and promote future advancements in this emerging research field.
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Affiliation(s)
- Zhao-Qi Zhang
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
| | - Yong-Xin Yang
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
| | - Jing-An Li
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
| | - Rong-Chang Zeng
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Shao-Kang Guan
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
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Loffredo S, Gambaro S, Marin de Andrade L, Paternoster C, Casati R, Giguère N, Vedani M, Mantovani D. Six-Month Long In Vitro Degradation Tests of Biodegradable Twinning-Induced Plasticity Steels Alloyed with Ag for Stent Applications. ACS Biomater Sci Eng 2021; 7:3669-3682. [PMID: 34269556 DOI: 10.1021/acsbiomaterials.1c00365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Twinning-induced plasticity (TWIP) Fe-Mn-C steels are biodegradable metals with far superior mechanical properties to any biodegradable metal, including Mg alloys, used in commercially available devices. For this reason, the use of Fe-Mn-C alloys to produce thinner and thinner implants can be exploited for overcoming the device size limitations that biodegradable stents still present. However, Fe-Mn steels are known to form a phosphate layer on their surface over long implantation times in animals, preventing device degradation in the required timeframe. The introduction of second phases in such alloys to promote galvanic coupling showed a short-term promise, and particularly the use of Ag looked especially effective. Nonetheless, the evolution of the corrosion mechanism of quaternary Fe-Mn-C-Ag alloys over time is still unknown. This study aims at understanding how corrosion changes over time for a TWIP steel alloyed with Ag using a simple static immersion setup. The presence of Ag promoted some galvanic coupling just in the first week of immersion; this effect was then suppressed by the formation of a mixed carbonate/hydroxide layer. This layer partly detached after 2 months and was replaced by a stable phosphate layer, over which a new carbonate/hydroxide formed after 4 months, effectively hindering the sample degradation. Attachment of phosphates to the surface matches 1-year outcomes from animal tests reported by other authors, but this phenomenon cannot be predicted using immersion up to 28 days. These results demonstrate that immersion tests of Fe-based degradable alloys can be related to animal tests only when they are carried out for a sufficiently long time and that galvanic coupling with Ag is not a viable strategy in the long term. Future works should focus more on surface modifications to control the interfacial behavior rather than alloying in the bulk.
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Affiliation(s)
- Sergio Loffredo
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Department of Min-Met-Materials Engineering, Research Center of CHU de Quebec, Division of Regenerative Medicine, Laval University, Quebec City, Quebec G1V 0A6, Canada.,Department of Mechanical Engineering, Politecnico di Milano, Milan 20156, Italy
| | - Sofia Gambaro
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Department of Min-Met-Materials Engineering, Research Center of CHU de Quebec, Division of Regenerative Medicine, Laval University, Quebec City, Quebec G1V 0A6, Canada.,National Research Council, Institute of Condensed Matter Chemistry and Technologies for Energy (CNR-ICMATE), Genoa 16149, Italy
| | - Leticia Marin de Andrade
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Department of Min-Met-Materials Engineering, Research Center of CHU de Quebec, Division of Regenerative Medicine, Laval University, Quebec City, Quebec G1V 0A6, Canada
| | - Carlo Paternoster
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Department of Min-Met-Materials Engineering, Research Center of CHU de Quebec, Division of Regenerative Medicine, Laval University, Quebec City, Quebec G1V 0A6, Canada
| | - Riccardo Casati
- Department of Mechanical Engineering, Politecnico di Milano, Milan 20156, Italy
| | - Nicolas Giguère
- Quebec Metallurgy Center (CMQ), Trois-Rivières, Quebec G9A 5E1, Canada
| | - Maurizio Vedani
- Department of Mechanical Engineering, Politecnico di Milano, Milan 20156, Italy
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in Surgery, Department of Min-Met-Materials Engineering, Research Center of CHU de Quebec, Division of Regenerative Medicine, Laval University, Quebec City, Quebec G1V 0A6, Canada
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Recent advances and directions in the development of bioresorbable metallic cardiovascular stents: Insights from recent human and in vivo studies. Acta Biomater 2021; 127:1-23. [PMID: 33823325 DOI: 10.1016/j.actbio.2021.03.058] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 03/24/2021] [Accepted: 03/25/2021] [Indexed: 12/12/2022]
Abstract
Over the past two decades, significant advancements have been made regarding the material formulation, iterative design, and clinical translation of metallic bioresorbable stents. Currently, magnesium-based (Mg) stent devices have remained at the forefront of bioresorbable stent material development and use. Despite substantial advances, the process of developing novel absorbable stents and their clinical translation is time-consuming, expensive, and challenging. These challenges, coupled with the continuous refinement of alternative bioresorbable metallic bulk materials such as iron (Fe) and zinc (Zn), have intensified the search for an ideal absorbable metallic stent material. Here, we discuss the most recent pre-clinical and clinical evidence for the efficacy of bioresorbable metallic stents and material candidates. From this perspective, strategies to improve the clinical performance of bioresorbable metallic stents are considered and critically discussed, spanning material alloy development, surface manipulations, material processing techniques, and preclinical/biological testing considerations. STATEMENT OF SIGNIFICANCE: Recent efforts in using Mg, Fe, and Zn based materials for bioresorbable stents include elemental profile changes as well as surface modifications to improve each of the three classes of materials. Although a variety of alloys for absorbable metallic stents have been developed, the ideal absorbable stent material has not yet been discovered. This review focuses on the state of the art for bioresorbable metallic stent development. It covers the three bulk materials used for degradable stents (Mg, Fe, and Zn), and discusses their advances from a translational perspective. Strategies to improve the clinical performance of bioresorbable metallic stents are considered and critically discussed, spanning material alloy development, surface manipulations, material processing techniques, and preclinical/biological testing considerations.
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Ozaki Y, Kuku KO, Sakellarios A, Haude M, Hideo-Kajita A, Desale S, Siogkas P, Sioros S, Ince H, Abizaid A, Tölg R, Lemos PA, von Birgelen C, Christiansen EH, Wijns W, Escaned J, Michalis L, Fotiadis DI, Djikstra J, Waksman R, Garcia-Garcia HM. Impact of Endothelial Shear Stress on Absorption Process of Resorbable Magnesium Scaffold: A BIOSOLVE-II Substudy. CARDIOVASCULAR REVASCULARIZATION MEDICINE 2021; 29:9-15. [PMID: 33863661 DOI: 10.1016/j.carrev.2021.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 03/12/2021] [Accepted: 04/05/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND/PURPOSE Local hemodynamic forces such as endothelial shear stress (ESS) may have an influence on appropriate neointimal healing, vessel remodeling, and struts' absorption process following second-generation drug-eluting resorbable magnesium scaffold (RMS, Magmaris, Biotronik AG, Buelach, Switzerland) placement. The aim of this study was to investigate the impact of ESS assessed by optical coherence tomography (OCT)-based computational fluid dynamic (CFD) simulations on absorption process and coronary lumen dimension after Magmaris implantation. METHODS AND RESULTS A total of 22 patients who were enrolled in the BIOSOLVE-II trial and underwent serial OCT assessment immediately after Magmaris implantation and at 6- and 12-month follow-up were included. We evaluated qualitative OCT findings frame by frame, and CFD simulations were performed to calculate the ESS at 3-dimensional (3D) reconstructed arteries. For quantitative calculation, the average ESS within each 1-mm section was classified into three groups: low (<1.0 Pa), intermediate (1.0-2.5 Pa), or high (>2.5 Pa). A significant difference of percentage remnants of scaffold was observed among the 3 groups at 12-month follow-up (P = 0.001) but not at 6-month follow-up. Low-ESS segment at baseline resulted in a greater lumen change of -1.857 ± 1.902 mm2 at 1 year compared to -1.277 ± 1.562 mm2 in the intermediate-ESS segment (P = 0.017) and - 0.709 ± 1.213 mm2 in the high-ESS segment (P = 0.001). CONCLUSION After Magmaris implantation, the presence of higher ESS might be associated with slower strut absorption process but less luminal loss.
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Affiliation(s)
- Yuichi Ozaki
- Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington DC, USA
| | - Kayode O Kuku
- Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington DC, USA
| | - Antonis Sakellarios
- Department of Materials Science and Engineering, University of Ioannina, Ioannina, Greece.
| | - Michael Haude
- Medical Clinic I, Städtische Kliniken Neuss, Lukaskrankenhaus GmbH, Neuss, Germany
| | - Alexandre Hideo-Kajita
- Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington DC, USA
| | - Sameer Desale
- Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington DC, USA
| | - Panagiotis Siogkas
- Department of Materials Science and Engineering, University of Ioannina, Ioannina, Greece
| | - Spyros Sioros
- Department of Cardiology, Medical School, University of Ioannina, Ioannina, Greece
| | - Hüseyin Ince
- Department of Cardiology, Vivantes Klinikum im Friedrichschain and Am Urban, Berlin, Germany
| | | | - Ralph Tölg
- Herzzentrum Segeberger Kliniken GmbH, Bad Segeberg, Germany
| | - Pedro Alves Lemos
- Instituto do Coração - HCFMUSP, University of Sao Paulo, São Paulo, Brazil; Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Clemens von Birgelen
- Department of Cardiology, Thoraxcentrum Twente, Medisch Spectrum Twente, Enschede, Netherlands
| | | | - William Wijns
- Cardiology Department, Cardiovascular Research Center Aalst, OLV Hospital, Aalst, Belgium
| | - Javier Escaned
- Hospital Clinico San Carlos IDISSC, Complutense University of Madrid, Madrid, Spain
| | - Lampros Michalis
- Medical Clinic I, Städtische Kliniken Neuss, Lukaskrankenhaus GmbH, Neuss, Germany
| | - Dimitrios I Fotiadis
- Department of Materials Science and Engineering, University of Ioannina, Ioannina, Greece
| | | | - Ron Waksman
- Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington DC, USA
| | - Hector M Garcia-Garcia
- Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington DC, USA.
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Cerrato E, Mejía-Rentería H, Franzè A, Quadri G, Belliggiano D, Biscaglia S, Lo Savio L, Spataro F, Erriquez A, Giacobbe F, Vergara-Uzcategui C, di Girolamo D, Tebaldi M, Varbella F, Campo G, Escaned J. Quantitative flow ratio as a new tool for angiography-based physiological evaluation of coronary artery disease: a review. Future Cardiol 2021; 17:1435-1452. [PMID: 33739146 DOI: 10.2217/fca-2020-0199] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The functional evaluation of coronary stenoses has obtained important clinical results in recent years, resulting in strong guideline recommendations. Nonetheless, the use of coronary wire-based functional evaluation has not yet become part of the routine in catheterization laboratories for several reasons, including the need to advance a wire into the coronary vessel to interrogate the stenosis. Angiography-derived indexes have been introduced to expand the current use of physiology to estimate the functional meaning of a stenosis on the basis of angiographic data only. The most studied and validated angiography-derived index is certainly the quantitative flow ratio. This article will summarize the basics of the quantitative flow ratio, the related validation studies and its current and future applications.
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Affiliation(s)
- Enrico Cerrato
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Hernan Mejía-Rentería
- Department of Cardiology, Hospital Clinico San Carlos, Instituto de Investigación Sanitaria San Carlos & Universidad Complutense de Madrid, Madrid, Spain
| | - Alfonso Franzè
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Giorgio Quadri
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Davide Belliggiano
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Simone Biscaglia
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy.,Maria Cecilia Hospital, GVM Care & Research, Cotignola, RA, Italy
| | - Luca Lo Savio
- Interventional Cardiology Unit, Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Fabio Spataro
- Interventional Cardiology Unit, Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Andrea Erriquez
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy.,Maria Cecilia Hospital, GVM Care & Research, Cotignola, RA, Italy
| | - Federico Giacobbe
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Carlos Vergara-Uzcategui
- Department of Cardiology, Hospital Clinico San Carlos, Instituto de Investigación Sanitaria San Carlos & Universidad Complutense de Madrid, Madrid, Spain
| | | | - Matteo Tebaldi
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy.,Maria Cecilia Hospital, GVM Care & Research, Cotignola, RA, Italy
| | - Ferdinando Varbella
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Gianluca Campo
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy.,Maria Cecilia Hospital, GVM Care & Research, Cotignola, RA, Italy
| | - Javier Escaned
- Department of Cardiology, Hospital Clinico San Carlos, Instituto de Investigación Sanitaria San Carlos & Universidad Complutense de Madrid, Madrid, Spain
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22
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Menze R, Wittchow E. In vitro and in vivo evaluation of a novel bioresorbable magnesium scaffold with different surface modifications. J Biomed Mater Res B Appl Biomater 2021; 109:1292-1302. [PMID: 33386677 PMCID: PMC8359236 DOI: 10.1002/jbm.b.34790] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/19/2020] [Accepted: 12/19/2020] [Indexed: 12/29/2022]
Abstract
The novel Resoloy® rare earth magnesium alloy was developed for bioresorbable vascular implant application, as an alternative to the WE43 used in Biotronik's Magmaris scaffold, which received CE approval in 2016. Initially, the Magmaris showed very promising preclinical and clinical results, but the formation of an unexpected conversion product and a too fast loss of integrity has proven to be a flaw. The safety and efficacy of Resoloy, which is intended to be bioresorbed without any remnants, has been investigated in an in vitro degradation study and a porcine coronary animal model. Four different groups of scaffolds composed of Resoloy (Res) as the backbone material and additionally equipped with a fluoride passivation layer (Res‐F), a polyester topcoat (Res‐P), or a duplex layer composed of a fluoride passivation layer and a polymeric topcoat (Res‐PF) were compared to a Magmaris scaffold in an in vitro degradation test. Preclinical safety and efficacy of Res‐F and Res‐PF were subsequently evaluated in a coronary porcine model for 12 and 28 days. Scanning electron microscope, quantitative coronary angiography, micro‐computed tomography, histopathology, and histomorphometry analyses were conducted to evaluate preclinical parameters and degradation behavior of the scaffolds. Res‐PF with a duplex layer shows the slowest degradation and the longest supporting force of all test groups. The in vitro data are confirmed by the results of the in vivo study, in which Res‐PF exhibited a longer supporting force than Res‐F, but also caused higher neointima formation. Both studied groups showed excellent biocompatibility. A starter colonization of the strut area with cells during bioresorption was observed. The in vitro degradation test shows that a combination of MgF2 passivation and a PLLA topcoat on a Resoloy magnesium backbone (Res‐PF) leads to a much slower degradation and a longer support time than a Magmaris control group. In a preclinical study, the safety and efficacy of this duplex layer could be demonstrated. The beginning colonization of the degraded strut area by macrophages can be seen as clear indications that the resorption of the intermediate degradation product takes a different course than that of the Magmaris scaffold.
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Affiliation(s)
- Roman Menze
- MeKo Laser Material Processing e.K, Sarstedt, Germany
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23
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Cerrato E, Belliggiano D, Quadri G, Erriquez A, Anselmino M, Quirós A, Franzè A, Ferrari F, Rolfo C, Mejia‐Renteria H, Escaned J, Gonzalo N, Campo G, Varbella F. Anatomical and functional healing after resorbable magnesium scaffold implantation in human coronary vessels: A combined optical coherence tomography and quantitative flow ratio analysis. Catheter Cardiovasc Interv 2020; 98:1038-1046. [DOI: 10.1002/ccd.29397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 09/18/2020] [Accepted: 11/09/2020] [Indexed: 11/12/2022]
Affiliation(s)
- Enrico Cerrato
- Interventional Cardiology Unit San Luigi Gonzaga University Hospital, Orbassano, and Rivoli Infermi Hospital, Rivoli Turin Italy
| | - Davide Belliggiano
- Division of Cardiology, "Città della Salute e della Scienza di Torino" Hospital, Department of Medical Sciences University of Turin Turin Italy
| | - Giorgio Quadri
- Interventional Cardiology Unit San Luigi Gonzaga University Hospital, Orbassano, and Rivoli Infermi Hospital, Rivoli Turin Italy
| | - Andrea Erriquez
- Cardiovascular Institute Azienda Ospedaliero‐Universitaria di Ferrara, Cona, Italy; Maria Cecilia Hospital, GVM Care & Research Cotignola Italy
| | - Matteo Anselmino
- Division of Cardiology, "Città della Salute e della Scienza di Torino" Hospital, Department of Medical Sciences University of Turin Turin Italy
| | - Alicia Quirós
- Departmento de Matemáticas Universidad de León León Spain
| | - Alfonso Franzè
- Interventional Cardiology Unit San Luigi Gonzaga University Hospital, Orbassano, and Rivoli Infermi Hospital, Rivoli Turin Italy
| | - Fabio Ferrari
- Interventional Cardiology Unit San Luigi Gonzaga University Hospital, Orbassano, and Rivoli Infermi Hospital, Rivoli Turin Italy
| | - Cristina Rolfo
- Interventional Cardiology Unit San Luigi Gonzaga University Hospital, Orbassano, and Rivoli Infermi Hospital, Rivoli Turin Italy
| | - Hernan Mejia‐Renteria
- Cardiology Department, Hospital Clinico San Carlos IDISSC & Universidad Complutense de Madrid Madrid Spain
| | - Javier Escaned
- Cardiology Department, Hospital Clinico San Carlos IDISSC & Universidad Complutense de Madrid Madrid Spain
| | - Nieves Gonzalo
- Cardiology Department, Hospital Clinico San Carlos IDISSC & Universidad Complutense de Madrid Madrid Spain
| | - Gianluca Campo
- Cardiovascular Institute Azienda Ospedaliero‐Universitaria di Ferrara, Cona, Italy; Maria Cecilia Hospital, GVM Care & Research Cotignola Italy
| | - Ferdinando Varbella
- Interventional Cardiology Unit San Luigi Gonzaga University Hospital, Orbassano, and Rivoli Infermi Hospital, Rivoli Turin Italy
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24
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Effect of strain on degradation behaviors of WE43, Fe and Zn wires. Acta Biomater 2020; 113:627-645. [PMID: 32574860 DOI: 10.1016/j.actbio.2020.06.028] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/13/2020] [Accepted: 06/16/2020] [Indexed: 11/23/2022]
Abstract
The biodegradable metallic devices undergo stress/strain-induced corrosion when they are used for load-bearing applications. The stress/strain induced-corrosion behavior causes differences in corrosion rate, corrosion morphology, strain distribution and mechanical performance of the devices. One representative example is the biodegradable stent. Biodegradable stents undergo complex inhomogeneous deformation that can cause dramatic non-uniform stent degradation, resulting in stress concentration and stents failure. The degradation of biodegradable devices requires special attention to the mutual effect between the applied strain and degradation. The quantitative relationship between strain and corrosion of the sample alloys (WE43, Fe and Zn), selected from three typical biodegradable metals, is firstly investigated and compared in this study. The in vitro degradation and the strength retention of WE43, Fe and Zn wires were investigated under different elastic and plastic strain levels ranging from 0.1% to 30%. The results indicated that the applied strain could bring down the corrosion potential, increase corrosion current and accelerate the degradation of three biodegradable metals. Specifically, remarkable enhanced localized corrosion was observed for plastic strained WE43 compared with those with elastic strains. This localized corrosion morphology significantly accelerated the strength decline at first, while the differences diminished with longer immersion period. Fe and Zn exhibited increased degradation with plastic strain applications than those under elastic strains. However, the degradation was not further increased with the increasing magnitude of plastic strains. Moreover, the bended wires were subcutaneously implanted in the dorsal aspect of the rats and the effect of bending deformation on in vitro and in vivo degradation of three metallic wires were also compared. The U-bended WE43 wires suffered more severe in vitro degradation at the stress concentrated region. Surprisingly, the early fracture of the undeformed regions was observed in the in vivo test. In conclusion, the corrosion rate, corrosion morphology and mechanical properties of WE43, Fe and Zn was sensitive to magnitude of the applied strains. The quantification results provided new insights into understanding the strain-dependent corrosion of three biodegradable metals both in vitro and in vivo. STATEMENT OF SIGNIFICANCE: Biodegradable implants are subjected to various mechanical environment during the deployment and subsequent physiological activity. It is necessary to have a clear understanding of the effects of the applied stress on degradation. This study addresses the quantitative effects of applied strain/stress on the in vitro and in vivo degradation of three typical biodegradable metals (Mg, Fe and Zn). These quantification results provide new insights into understanding the strain-induced corrosion of three metals.
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25
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Bian D, Qin L, Lin W, Shen D, Qi H, Shi X, Zhang G, Liu H, Yang H, Wang J, Zhang D, Zheng Y. Magnetic resonance (MR) safety and compatibility of a novel iron bioresorbable scaffold. Bioact Mater 2020; 5:260-274. [PMID: 32128465 PMCID: PMC7044471 DOI: 10.1016/j.bioactmat.2020.02.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/14/2020] [Accepted: 02/15/2020] [Indexed: 11/29/2022] Open
Abstract
Fully bioresorbable scaffolds have been designed to overcome the limitations of traditional drug-eluting stents (DESs), which permanently cage the native vessel wall and pose possible complications. The ultrathin-strut designed sirolimus-eluting iron bioresorbable coronary scaffold system (IBS) shows comparable mechanical properties to traditional DESs and exhibits an adaptive degradation profile during target vessel healing, which makes it a promising candidate in all-comers patient population. For implanted medical devices, magnetic resonance (MR) imaging properties, including MR safety and compatibility, should be evaluated before its clinical use, especially for devices with intrinsic ferromagnetism. In this study, MR safety and compatibility of the IBS scaffold were evaluated based on a series of well-designed in-vitro, ex-vivo and in-vivo experiments, considering possible risks, including scaffold movement, over-heating, image artifact, and possible vessel injury, under typical MR condition. Traditional ASTM standards for MR safety and compatibility evaluation of intravascular devices were referred, but not only limited to that. The unique time-relevant MR properties of bioresorbable scaffolds were also discussed. Possible forces imposed on the scaffold during MR scanning and MR image artifacts gradually decreased along with scaffold degradation/absorption. Rigorous experiments designed based on a scientifically based rationale revealed that the IBS scaffold is MR conditional, though not MR compatible before complete absorption. The methodology used in the present study can give insight into the MR evaluation of magnetic scaffolds (bioresorbable) or stents (permanent).
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Affiliation(s)
- Dong Bian
- Biotyx Medical (Shenzhen) Co.,Ltd, Shenzhen, 518110, Guangdong, China
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Li Qin
- Biotyx Medical (Shenzhen) Co.,Ltd, Shenzhen, 518110, Guangdong, China
| | - Wenjiao Lin
- Biotyx Medical (Shenzhen) Co.,Ltd, Shenzhen, 518110, Guangdong, China
| | - Danni Shen
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Haiping Qi
- Biotyx Medical (Shenzhen) Co.,Ltd, Shenzhen, 518110, Guangdong, China
| | - Xiaoli Shi
- Key Lab. of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
| | - Gui Zhang
- Shenzhen Advanced Medical Services Co., Ltd, Shenzhen, 518000, Guangdong, China
| | - Hongwei Liu
- Shen Zhen Testing Center of Medical Devices, Shenzhen, 518057, Guangdong, China
| | - Han Yang
- Shen Zhen Testing Center of Medical Devices, Shenzhen, 518057, Guangdong, China
| | - Jin Wang
- Key Lab. of Advanced Technology for Materials of Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
| | - Deyuan Zhang
- Biotyx Medical (Shenzhen) Co.,Ltd, Shenzhen, 518110, Guangdong, China
| | - Yufeng Zheng
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
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26
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Kawashima H, Ono M, Kogame N, Takahashi K, Chang CC, Hara H, Gao C, Wang R, Tomaniak M, Modolo R, Wykrzykowska JJ, De Winter RJ, Sharif F, Serruys PW, Onuma Y. Drug-eluting bioresorbable scaffolds in cardiovascular disease, peripheral artery and gastrointestinal fields: a clinical update. Expert Opin Drug Deliv 2020; 17:931-945. [DOI: 10.1080/17425247.2020.1764932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Hideyuki Kawashima
- Department of Clinical and Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Cardiology, Teikyo University School of Medicine, Tokyo, Japan
| | - Masafumi Ono
- Department of Clinical and Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Norihiro Kogame
- Department of Clinical and Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Kuniaki Takahashi
- Department of Clinical and Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Chun-Chin Chang
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hironori Hara
- Department of Clinical and Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Chao Gao
- Department of Cardiology, Radboudumc, Nijmegen, The Netherlands
| | - Rutao Wang
- Department of Cardiology, Radboudumc, Nijmegen, The Netherlands
| | - Mariusz Tomaniak
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Rodrigo Modolo
- Department of Clinical and Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Internal Medicine, Cardiology Division, University of Campinas (UNICAMP), Campinas, Brazil
| | - Joanna J. Wykrzykowska
- Department of Clinical and Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Robbert J. De Winter
- Department of Clinical and Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Faisal Sharif
- Department of Cardiology, National University of Ireland, Galway (NUIG), Galway, Ireland
| | - Patrick W. Serruys
- Department of Cardiology, National University of Ireland, Galway (NUIG), Galway, Ireland
- NHLI, Imperial College London, London, UK
| | - Yoshinobu Onuma
- Department of Cardiology, National University of Ireland, Galway (NUIG), Galway, Ireland
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27
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Comparison of clinical outcomes between Magmaris and Orsiro drug eluting stent at 12 months: Pooled patient level analysis from BIOSOLVE II–III and BIOFLOW II trials. Int J Cardiol 2020; 300:60-65. [DOI: 10.1016/j.ijcard.2019.11.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 08/30/2019] [Accepted: 11/04/2019] [Indexed: 11/23/2022]
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28
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Haude M, Ince H, Toelg R, Lemos PA, von Birgelen C, Christiansen EH, Wijns W, Neumann FJ, Eeckhout E, Garcia-Garcia HM, Waksman R. Safety and performance of the second-generation drug-eluting absorbable metal scaffold (DREAMS 2G) in patients with de novo coronary lesions: three-year clinical results and angiographic findings of the BIOSOLVE-II first-in-man trial. EUROINTERVENTION 2020; 15:e1375-e1382. [DOI: 10.4244/eij-d-18-01000] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Liu J, Lin Y, Bian D, Wang M, Lin Z, Chu X, Li W, Liu Y, Shen Z, Liu Y, Tong Y, Xu Z, Zhang Y, Zheng Y. In vitro and in vivo studies of Mg-30Sc alloys with different phase structure for potential usage within bone. Acta Biomater 2019; 98:50-66. [PMID: 30853611 DOI: 10.1016/j.actbio.2019.03.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/01/2019] [Accepted: 03/05/2019] [Indexed: 10/27/2022]
Abstract
Proper alloying magnesium with element scandium (Sc) could transform its microstructure from α phase with hexagonal closed-packed (hcp) structure into β phase with body-cubic centered (bcc) structure. In the present work, the Mg-30 wt% Sc alloy with single α phase, dual phases (α + β) or β phase microstructure were developed by altering the heat-treatment routines and their suitability for usage within bone was comprehensively investigated. The β phased Mg-30 wt% Sc alloy showed the best mechanical performance with ultimate compressive strength of 603 ± 39 MPa and compressive strain of 31 ± 3%. In vitro degradation test showed that element scandium could effectively incorporate into the surface corrosion product layer, form a double-layered structure, and further protect the alloy matrix. No cytotoxic effect was observed for both single α phased and β phased Mg-30 wt% Sc alloys on MC3T3 cell line. Moreover, the β phased Mg-30 wt%Sc alloy displayed acceptable corrosion resistance in vivo (0.06 mm y-1) and maintained mechanical integrity up to 24 weeks. The degradation process did not significantly influence the hematology indexes of inflammation, hepatic or renal functions. The bone-implant contact ratio of 75 ± 10% after 24 weeks implied satisfactory integration between β phased Mg-30 wt%Sc alloy and the surrounding bone. These findings indicate a potential usage of the bcc-structured Mg-Sc alloy within bone and might provide a new strategy for future biomedical magnesium alloy design. STATEMENT OF SIGNIFICANCE: Scandium is the only rare earth element that can transform the matrix of magnesium alloy into bcc structure, and Mg-30 wt%Sc alloy had been recently reported to exhibit shape memory effect. The aim of the present work is to study the feasibility of Mg-30 wt%Sc alloy with different constitutional phases (single α phase, single β phase or dual phases (α + β)) as biodegradable orthopedic implant by in vitro and in vivo testings. Our findings showed that β phased Mg-30 wt%Sc alloy which is of bcc structure exhibited improved strength and superior in vivo degradation performance (0.06 mm y-1). No cytotoxicity and systematic toxicity were shown for β phased Mg-30 wt%Sc alloy on MC3T3 cell model and rat organisms. Moreover, good osseointegration, limited hydrogen gas release and maintained mechanical integrity were observed after 24 weeks' implantation into the rat femur bone.
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30
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Loffredo S, Paternoster C, Giguère N, Barucca G, Vedani M, Mantovani D. The addition of silver affects the deformation mechanism of a twinning-induced plasticity steel: Potential for thinner degradable stents. Acta Biomater 2019; 98:103-113. [PMID: 31004841 DOI: 10.1016/j.actbio.2019.04.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/11/2019] [Accepted: 04/11/2019] [Indexed: 01/24/2023]
Abstract
While Fe-based alloys have already been reported to possess all mechanical properties required for vascular stenting, their relatively low degradation rate in vivo still constitutes their main bottleneck. The inflammatory reaction generated by a stent is inversely proportional to its mass. Therefore, the tendency in stenting is to lower the section so to reduce the inflammatory reaction. Twinning-induced plasticity steels (TWIP) possess excellent mechanical properties for envisaging the next generation of thinner degradable cardiovascular stents. To accelerate the degradation, the addition of noble elements was proposed, aimed at promoting corrosion by galvanic coupling. In this context, silver was reported to generally increase the degradation rate. However, its impact on the deformation mechanism of TWIP steels has not been reported yet. Results show that the use of Ag significantly reduces the ductility without altering the strength of the material. Furthermore, the presence of Ag was found to promote a different deformation texture, thus stimulating the formation of mechanical martensite. Since a stent works in the deformed state, understanding the microstructure and texture resulting from plastic deformation can effectively help to forecast the degradation mechanisms taking place during implantation and the expected degradation time. Moreover, knowing the deformed microstructure allows to understand the formability of very small tubes, as precursors of the next generation of thin section degradable stents. STATEMENT OF SIGNIFICANCE: Commercial degradable magnesium stents are limited from their relatively big structure size. Twinning-induced plasticity steels possess outstanding mechanical properties, but their degradation time goes beyond the timeframe expected from clinics. The inclusion of noble Ag particles, which favor galvanic coupling, is known to promote corrosion and solve this limitation. However, it is necessary to understand the impact that Ag has on the deformation microstructure and on the mechanical properties. The addition of Ag reduces the ductility of a twinning-induced plasticity steel because of a different deformation microstructure. Since a stent works in a deformed state inside an artery, understanding the microstructural evolution after plastic deformation allows to better predict the device performances during service life.
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31
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Zhou C, Li HF, Yin YX, Shi ZZ, Li T, Feng XY, Zhang JW, Song CX, Cui XS, Xu KL, Zhao YW, Hou WB, Lu ST, Liu G, Li MQ, Ma JY, Toft E, Volinsky AA, Wan M, Yao XJ, Wang CB, Yao K, Xu SK, Lu H, Chang SF, Ge JB, Wang LN, Zhang HJ. Long-term in vivo study of biodegradable Zn-Cu stent: A 2-year implantation evaluation in porcine coronary artery. Acta Biomater 2019; 97:657-670. [PMID: 31401346 DOI: 10.1016/j.actbio.2019.08.012] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 07/11/2019] [Accepted: 08/06/2019] [Indexed: 01/11/2023]
Abstract
In the present study, a novel biodegradable Zn-0.8Cu coronary artery stent was fabricated and implanted into porcine coronary arteries for up to 24 months. Micro-CT analysis showed that the implanted stent was able to maintain structural integrity after 6 months, while its disintegration occurred after 9 months of implantation. After 24 months of implantation, approximately 28 ± 13 vol% of the stent remained. Optical coherence tomography and histological analysis showed that the endothelialization process could be completed within the first month after implantation, and no inflammation responses or thrombosis formation was observed within 24 months. Cross-section analysis indicated that the subsequent degradation products had been removed in the abluminal direction, guaranteeing that the strut could be replaced by normal tissue without the risk of contaminating the circulatory system, causing neither thrombosis nor inflammation response. The present work demonstrates that the Zn-0.8Cu stent has provided sufficient structural supporting and exhibited an appropriate degradation rate during 24 months of implantation without degradation product accumulation, thrombosis, or inflammation response. The results indicate that the Zn-0.8Cu coronary artery stent is promising for further clinical applications. STATEMENT OF SIGNIFICANCE: Although Zn and its alloys have been considered to be potential candidates of biodegradable metals for vascular stent use, by far, no Zn-based stent with appropriate medical device performance has been reported because of the low mechanical properties of zinc. The present work presents promising results of a Zn-Cu biodegradable vascular stent in porcine coronary arteries. The Zn-Cu stent fabricated in this work demonstrated adequate medical device performance both in vitro and in vivo and degraded at a proper rate without safety problems induced. Furthermore, large animal models have more cardiovascular similarities as humans. Results of this study may provide further information of the Zn-based stents for translational medicine research.
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Affiliation(s)
- Chao Zhou
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Department of Interventional and Vascular Surgery, The Tenth People's Hospital of Shanghai, Tongji University, Shanghai 200072, PR China; National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Hua-Fang Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Yu-Xia Yin
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Zhang-Zhi Shi
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Ting Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Xiang-Yi Feng
- National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Jun-Wei Zhang
- National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Cai-Xia Song
- National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Xiao-Shan Cui
- National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Kai-Li Xu
- National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Yan-Wei Zhao
- National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Wen-Bo Hou
- National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Shou-Tao Lu
- National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Guang Liu
- National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China
| | - Mao-Quan Li
- Department of Interventional and Vascular Surgery, The Tenth People's Hospital of Shanghai, Tongji University, Shanghai 200072, PR China
| | - Jian-Ying Ma
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032 PR China
| | - Egon Toft
- Biomedical Research Center, College of Medicine, Qatar University, Shareh Jamiaa, Post Box 2716, Doha, Qatar
| | - Alex A Volinsky
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Min Wan
- Shandong Quality Inspection Center for Medical Devices, No. 15166 Century Avenue, Jinan H-T Industrial Development Zone, Shandong 250101, PR China
| | - Xiu-Jun Yao
- Shandong Quality Inspection Center for Medical Devices, No. 15166 Century Avenue, Jinan H-T Industrial Development Zone, Shandong 250101, PR China
| | - Chang-Bin Wang
- Shandong Quality Inspection Center for Medical Devices, No. 15166 Century Avenue, Jinan H-T Industrial Development Zone, Shandong 250101, PR China
| | - Kang Yao
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032 PR China
| | - Shi-Kun Xu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032 PR China
| | - Hao Lu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032 PR China
| | - Shu-Fu Chang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032 PR China
| | - Jun-Bo Ge
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032 PR China.
| | - Lu-Ning Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.
| | - Hai-Jun Zhang
- Department of Interventional and Vascular Surgery, The Tenth People's Hospital of Shanghai, Tongji University, Shanghai 200072, PR China; National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou City, Shandong 251100, PR China; Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Niels Jernes Vej 10, Aalborg Ø 9220, Denmark.
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Bao G, Fan Q, Ge D, Sun M, Guo H, Xia D, Liu Y, Liu J, Wu S, He B, Zheng Y. In vitro and in vivo studies on magnesium alloys to evaluate the feasibility of their use in obstetrics and gynecology. Acta Biomater 2019; 97:623-636. [PMID: 31386929 DOI: 10.1016/j.actbio.2019.08.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 07/15/2019] [Accepted: 08/01/2019] [Indexed: 12/20/2022]
Abstract
Magnesium and its alloys were widely investigated in many body fluid microenvironments including bone, blood, bile, saliva, and urine; however, no study has been conducted in the intrauterine microenvironment. In this study, the degradation behaviors of HP-Mg, Mg-1Ca, and Mg-2Zn alloys in simulated uterine fluid (SUF) were systematically investigated, and then the biological response of four kinds of uterine cells to these materials was observed. For this purpose, the gluteal muscle of rat was used as the implantation position to study the in vivo biocompatibility as a mimic of the intrauterine device (IUD) fixation part. The 120-day immersion test indicated that the Mg-1Ca alloy had a faster degradation rate than the Mg-2Zn alloy and HP-Mg and dissolved entirely in the SUF. Indirect cytotoxicity assay showed that the extracts of HP-Mg, Mg-1Ca, and Mg-2Zn alloys have positive effects on human uterine smooth muscle cells (HUSMC), human endometrial epithelial cells (HEEC), and human endometrial stromal cells (HESC), especially for the Mg-1Ca alloy group. Furthermore, the in vivo experiment showed that HP-Mg, Mg-1Ca, and Mg-2Zn alloy implants cause a light inflammatory response in the initial 3 days, but they were surrounded mainly by connective tissue, and lymphocytes were rarely observed at 4 weeks. Based on the above facts, we believed that it is feasible for using biomedical Mg alloys in obstetrics and gynecology and proposed three kinds of medical device candidates for future R&D. Statement of Significance Magnesium alloys were widely investigated in various body microenvironments including bone, blood, bile, saliva, and urine; however, no study has been conducted in the intrauterine environment. In this work, the degradation behaviors of Mg alloys in simulated uterine fluid were systematically investigated, and then the biological response of four kinds of uterine cells to these materials was observed. For this purpose, the tibialis anterior of a rat model was used as the implantation position to study the in vivo biocompatibility. The comprehensive in vitro and in vivo testing results indicated that biomedical Mg alloys are feasible for use in obstetrics and gynecology. Further, three kinds of medical device candidates were proposed.
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The Development of Magnesium-Based Resorbable and Iron-Based Biocorrodible Metal Scaffold Technology and Biomedical Applications in Coronary Artery Disease Patients. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9173527] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In the treatment of atherosclerotic disease patients, the adoption of second-generation drug-eluting stents (DES) in percutaneous coronary intervention reduced the occurrence of in-stent restenosis (ISR) and acute stent thrombosis (ST) when compared to bare metal stents and 1st generation DES. However, the permanent encaging of the vessel wall by any of the metallic stents perpetuates the inflammation process and prevents vasomotion in the treated segment. Aiming to overcome this issue, the bioresorbable scaffold (BRS) concept was developed by providing transient vascular radial support to the target segment during the necessary time to heal and disappearing after a period of time. Close to 20 years since BRS technology was first reported, the interventional cardiology field saw the rise and fall of several BRS devices. Although iron-based BRS is an emerging technology, currently, magnesium-alloy resorbable scaffolds devices are supported with the most robust data. This manuscript aims to review the concept of magnesium-based BRS devices, as well as their bioresorption mechanisms and the status of this technology, and the clinical outcomes of patients treated with magnesium BRS and to review the available evidence on iron-based BRS technology.
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Linden K, McQuillan C, Brennan P, Menown IBA. Advances in Clinical Cardiology 2018: A Summary of Key Clinical Trials. Adv Ther 2019; 36:1549-1573. [PMID: 31065993 PMCID: PMC6824396 DOI: 10.1007/s12325-019-00962-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Many important clinical trials in cardiology were published or presented at major international meetings throughout 2018. This paper aims to offer a concise overview of these significant advances and to put them into clinical context. METHODS Trials presented at the major international cardiology meetings during 2018 were reviewed including The American College of Cardiology, EuroPCR, The European Society of Cardiology, PCR London Valves, Transcatheter Cardiovascular Therapeutics, and the American Heart Association. In addition to this a literature search identified several other publications eligible for inclusion based on their relevance to clinical cardiology, their potential impact on clinical practice and on future guidelines. RESULTS A total of 78 trials met the inclusion criteria. New interventional and structural data include trials examining novel stent designs (Biofreedom™, COMBO), use of drug-coated balloons in patients with high bleeding risk, intervention in stable coronary artery disease, revascularisation strategy in ST elevation myocardial infarction, transcatheter aortic valve replacement in low-risk patients, and percutaneous mitral or tricuspid valve interventions. Preventative cardiology data included the use of sodium glucose cotransporter-2 inhibitors (empagliflozin, dapagliflozin, canagliflozin), proprotein convertase subtilisin-kexin type 9 (PCSK9) inhibitors (alirocumab) and approaches of hypertension management. Antiplatelet data included trials evaluating both the optimal length of course and combination of antiplatelet agents. Heart failure data included trials of sacubitril-valsartan during acute hospital admission and the management of chemotherapy-induced cardiotoxicity. Electrophysiology data included trials examining atrial fibrillation ablation, wearable cardiac defibrillators (LifeVest) and His-bundle pacing. CONCLUSION This article presents key clinical trials completed during 2018 and should be valuable to both cardiology clinicians and researchers.
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Affiliation(s)
- Katie Linden
- Craigavon Cardiac Centre, SHSCT, Craigavon, Northern Ireland, UK.
| | - Conor McQuillan
- Craigavon Cardiac Centre, SHSCT, Craigavon, Northern Ireland, UK
| | - Paul Brennan
- Craigavon Cardiac Centre, SHSCT, Craigavon, Northern Ireland, UK
| | - Ian B A Menown
- Craigavon Cardiac Centre, SHSCT, Craigavon, Northern Ireland, UK
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Tovar Forero MN, van Zandvoort L, Masdjedi K, Diletti R, Wilschut J, de Jaegere PP, Zijlstra F, Van Mieghem NM, Daemen J. Serial invasive imaging follow-up of the first clinical experience with the Magmaris magnesium bioresorbable scaffold. Catheter Cardiovasc Interv 2019; 95:226-231. [PMID: 31033171 PMCID: PMC7027819 DOI: 10.1002/ccd.28304] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 03/14/2019] [Accepted: 04/10/2019] [Indexed: 12/02/2022]
Abstract
Objectives To assess the performance of the commercially available Magmaris sirolimus‐eluting bioresorbable scaffold (BRS) with invasive imaging at different time points. Background Coronary BRS with a magnesium backbone have been recently studied as an alternative to polymeric scaffolds, providing enhanced vessel support and a faster resorption rate. We aimed to assess the performance of the commercially available Magmaris sirolimus‐eluting BRS at different time points. Methods A prospective, single‐center, nonrandomized study was performed at the Thoraxcenter, Erasmus Medical Center, Rotterdam, The Netherlands. Six patients with stable de novo coronary artery lesions underwent single‐vessel revascularization with the Magmaris sirolimus‐eluting BRS. Invasive follow‐up including intravascular imaging using optical coherence tomography (OCT) was performed at different time points. Results At a median of 8 months (range 4–12 months) target lesion failure occurred in one patient. Angiography revealed a late lumen loss of 0.59 ± 0.39 mm, a percentage diameter stenosis of 39.65 ± 15.81%, and a binary restenosis rate of 33.3%. OCT showed a significant reduction in both minimal lumen area (MLA) and scaffold area at the site of the MLA by 43.44 ± 28.62 and 38.20 ± 25.74%, respectively. A fast and heterogeneous scaffold degradation process was found with a significant reduction of patent struts at 4–5 months. Conclusions Our findings show that the latest iteration of magnesium BRS suffers from premature dismantling, resulting in a higher than expected decrease in MLA.
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Affiliation(s)
| | - Laurens van Zandvoort
- Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Kaneshka Masdjedi
- Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Roberto Diletti
- Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Jeroen Wilschut
- Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Peter P de Jaegere
- Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Felix Zijlstra
- Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Nicolas M Van Mieghem
- Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Joost Daemen
- Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
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Ozaki Y, Garcia-Garcia HM, Hideo-Kajita A, Kuku KO, Haude M, Ince H, Abizaid A, Tölg R, Lemos PA, von Birgelen C, Christiansen EH, Wijns W, Escaned J, Waksman R. Serial 3-Dimensional Optical Coherence Tomography Assessment of Jailed Side-Branch by Second-Generation Drug-Eluting Absorbable Metal Scaffold (from the BIOSOLVE-II Trial). Am J Cardiol 2019; 123:1044-1051. [PMID: 30683424 DOI: 10.1016/j.amjcard.2018.12.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/19/2018] [Accepted: 12/20/2018] [Indexed: 11/25/2022]
Abstract
Second-generation drug-eluting absorbable metal scaffold (DREAMS 2G) is used for treating coronary lesions. However, the natural history of the jailed side-branch (SB) after DREAMS 2G implantation remains to be elucidated. The aim of this study is to investigate the effect of scaffold struts on jailed SBs as assessed by 3-dimensional (3D) optical coherence tomography (OCT) after implantation of DREAMS 2G. We enrolled the patients who received a DREAMS 2G implantation and where OCT was performed at postprocedure and 12-month follow-up in the BIOSOLVE-II trial. The area of the ostium of jailed SBs and number of compartments divided by scaffold struts were assessed by cut-plane analysis using 3D OCT. A total of 24 patients with 61 jailed SBs were analyzed in this study. The number of compartments was significantly decreased (postprocedure; 1.98 ± 0.84 vs 12 months; 1.10 ± 0.30, p <0.001) during the 12 months. Since most of the struts disappeared, the ostium area was increased in 62% of jailed SBs at 12 months, however, not significantly different from postprocedure (postprocedure; 0.74 [0.34 to 1.46] mm2 vs 12 months; 0.78 [0.41 to 1.68] mm2, p = 0.055). The number of compartments created by scaffold struts and branching angle at postprocedure had no effect on the changes of SB ostium area. DREAMS 2G has a favorable absorption process in the jailed SBs up to 12 months and may be considered as an optional therapy for treating lesions that involve SBs.
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Hideo-Kajita A, Garcia-Garcia HM, Haude M, Joner M, Koolen J, Ince H, Abizaid A, Toelg R, Lemos PA, von Birgelen C, Christiansen EH, Wijns W, Neumann FJ, Kaiser C, Eeckhout E, Teik LS, Escaned J, Azizi V, Kuku KO, Ozaki Y, Dan K, Waksman R. First Report of Edge Vascular Response at 12 Months of Magmaris, A Second-Generation Drug-Eluting Resorbable Magnesium Scaffold, Assessed by Grayscale Intravascular Ultrasound, Virtual Histology, and Optical Coherence Tomography. A Biosolve-II Trial Sub-Study. CARDIOVASCULAR REVASCULARIZATION MEDICINE 2019; 20:392-398. [PMID: 31079817 DOI: 10.1016/j.carrev.2019.02.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/11/2019] [Accepted: 02/13/2019] [Indexed: 02/06/2023]
Abstract
INTRODUCTION AND OBJECTIVE The edge vascular response (EVR) remains unknown in second generation drug-eluting Resorbable Magnesium Scaffold (RMS), such as Magmaris. The aim of the study was to evaluate tissue modifications in the RMS edges over time, assessed by different invasive imaging modalities. METHODS The patients treated with the device were assessed by optical coherence tomography (OCT), grayscale intravascular ultrasound (IVUS), and virtual histology IVUS at baseline and 12 months. The EVR study performed a segment- and frame-level analysis of the 5 mm segments proximal and distal of the actual RMS. RESULTS The segment-level grayscale IVUS (n = 10), virtual histology IVUS (n = 10), and OCT (n = 18) analysis did not show any significant changes after 12 months, except for a fibrous plaque area (FPA) reduction of 0.5mm2 (p = 0.017) in the proximal segment compared to baseline. In the frame-level analysis, IVUS evaluation revealed a vessel area decreased 2.80 ± 1.43 mm2 (p = 0.012) and 2.49 ± 1.53 mm2 (p = 0.022) in 2 proximal frames. This was accompanied by plaque area reduction of 0.88 ± 0.70 mm2 (p = 0.048) and a FPA decreased by 0.63 ± 0.48 mm2 (p = 0.004) in one proximal frame. In 1 distal frame, there was a dense calcium area reduction of 0.10 ± 0.12 mm2 (p = 0.045), FPA and fibrous fatty plaque increased 0.54 ± 0.53 mm2 (p = 0.023) and 0.17 ± 0.16 mm2 (p = 0.016), respectively. By OCT, there was a lumen area decrease of 0.76 ± 1.51 mm2 (p = 0.045) in a distal frame. CONCLUSION At 12 months, Magmaris EVR assessment does not show overall significant changes, except for a fibrous plaque area reduction in the proximal segment. This could be translated as a benign healing process at the edges of the RMS. SUMMARY The edge vascular response (EVR) remains unknown in second generation drug-eluting absorbable metal scaffolds (RMS), such as Magmaris. Patients treated with the device were assessed by multi invasive imaging modalities [i.e. optical coherence tomography (OCT), grayscale intravascular ultrasound (IVUS), and virtual histology IVUS] evaluating the tissue changes over time in the segment- and frame-level analysis of the 5 mm segments proximal and distal of the actual RMS. As a result, after 12 months, Magmaris EVR assessment does not show overall significant changes, except for a fibrous plaque area reduction in the proximal segment, translating a benign healing process at the edges of the RMS.
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Affiliation(s)
- Alexandre Hideo-Kajita
- Interventional Cardiology Department, MedStar Washington Hospital Center, Washington, DC, USA
| | - Hector M Garcia-Garcia
- Interventional Cardiology Department, MedStar Washington Hospital Center, Washington, DC, USA.
| | - Michael Haude
- Medical Clinic I, Städtische Kliniken Neuss, Lukaskrankenhaus GmbH, Neuss, Germany
| | - Michael Joner
- Deutsches Herzzentrum Muenchen und Deutsches Zentrum fuer Herz-Kreislaufforschung e.V., Munich, Germany
| | - Jacques Koolen
- Cardiologie, Catharina Ziekenhuis, Eindhoven, the Netherlands
| | - Hüseyin Ince
- Vivantes Klinikum im Friedrichshain and Am Urban, Department of Cardiology, University of Rostock, Berlin, Germany
| | | | - Ralph Toelg
- Herzzentrum Segeberger Kliniken, Henstedt-Ulzburg, Germany
| | - Pedro A Lemos
- Instituto do Coração - HCFMUSP, Universidade de São Paulo, São Paulo, Brazil
| | - Clemens von Birgelen
- Department of Cardiology, Medisch Spectrum Twente, Thoraxcentrum Twente, Enschede, the Netherlands
| | | | - William Wijns
- Cardiology Department, Cardiovascular Research Center Aalst, OLV Hospital, Aalst, Belgium
| | - Franz-Josef Neumann
- Klinik fur Kardiologie und Angiologie II, Universitats-Herzzentrum Freiburg - Bad Krozingen, Bad Krozingen, Germany
| | - Christoph Kaiser
- Department of Cardiology, University Hospital, Basel, Switzerland
| | - Eric Eeckhout
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Lim Soo Teik
- Department of Cardiology, National Heart Center Singapore, Singapore, Singapore
| | - Javier Escaned
- Department of Cardiology, Hospital Clinico San Carlos, Madrid, Spain
| | - Viana Azizi
- Interventional Cardiology Department, MedStar Washington Hospital Center, Washington, DC, USA
| | - Kayode O Kuku
- Interventional Cardiology Department, MedStar Washington Hospital Center, Washington, DC, USA
| | - Yuichi Ozaki
- Interventional Cardiology Department, MedStar Washington Hospital Center, Washington, DC, USA
| | - Kazuhiro Dan
- Interventional Cardiology Department, MedStar Washington Hospital Center, Washington, DC, USA
| | - Ron Waksman
- Interventional Cardiology Department, MedStar Washington Hospital Center, Washington, DC, USA
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Ozaki Y, Garcia-Garcia HM, Hideo-Kajita A, Kuku KO, Haude M, Ince H, Abizaid A, Tölg R, Lemos PA, von Birgelen C, Christiansen EH, Wijns W, Escaned J, Dijkstra J, Waksman R. Impact of procedural characteristics on coronary vessel wall healing following implantation of second-generation drug-eluting absorbable metal scaffold in patients with de novo coronary artery lesions: an optical coherence tomography analysis. Eur Heart J Cardiovasc Imaging 2018; 20:916-924. [DOI: 10.1093/ehjci/jey210] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 11/27/2018] [Indexed: 11/13/2022] Open
Abstract
Abstract
Aims
Second-generation drug-eluting absorbable metal scaffold (DREAMS 2G) is an alternative novel device for treating coronary lesions. However, the relationship between in-scaffold dimensions after implantation of DREAMS 2G and vessel healing and luminal results at follow-up is unknown. The aim of this study is, therefore, to investigate whether the expansion index after implantation of DREAMS 2G as assessed by optical coherence tomography (OCT) impacts late luminal status and healing of the vessel wall.
Methods and results
This study comprises of a total 65 out of 123 patients who were enrolled in the BIOSOLVE-II trial. We assessed both qualitative and quantitative OCT findings and the expansion index of DREAMS 2G after implantation frame by frame using OCT. Expansion index was defined as minimum scaffold area/mean reference lumen area. The over-expansion group was also defined with expansion index >1.0. The total number of analysed frames at post-procedure and 6-month follow-up was 8243 and 8263 frames, respectively. At 6-month follow-up, in-scaffold healing was documented by the reduction of 82% in dissections, 93% in attached intra-luminal mass (ILM), 65% in non-attached ILM, and 76% in jailed side branch. The over-expansion group had significantly greater in-scaffold luminal volume loss (LVL) compared with the non-over-expansion group [over-expansion: 35.0 (18.5–52.1) mm3 vs. non-over-expansion: 21.0 (11.6–37.9) mm3, P = 0.039].
Conclusion
Excellent in vivo healing process after implantation of DREAMS 2G was observed at 6 months. We found that higher expansion indices were associated with higher in-scaffold LVL at 6 months assessed by OCT.
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Affiliation(s)
- Yuichi Ozaki
- Section of Interventional Cardiology, MedStar Washington Hospital Center, 110 Irving Street NW, Suite 4B-1, Washington, DC, USA
- Section of Interventional Cardiology, MedStar Cardiovascular Research Network, MedStar Washington Hospital Center, Washington, DC, USA
| | - Hector M Garcia-Garcia
- Section of Interventional Cardiology, MedStar Washington Hospital Center, 110 Irving Street NW, Suite 4B-1, Washington, DC, USA
- Section of Interventional Cardiology, MedStar Cardiovascular Research Network, MedStar Washington Hospital Center, Washington, DC, USA
| | - Alexandre Hideo-Kajita
- Section of Interventional Cardiology, MedStar Washington Hospital Center, 110 Irving Street NW, Suite 4B-1, Washington, DC, USA
- Section of Interventional Cardiology, MedStar Cardiovascular Research Network, MedStar Washington Hospital Center, Washington, DC, USA
| | - Kayode O Kuku
- Section of Interventional Cardiology, MedStar Cardiovascular Research Network, MedStar Washington Hospital Center, Washington, DC, USA
| | - Michael Haude
- Medical Clinic I, Städtische Kliniken Neuss, Lukaskrankenhaus GmbH, Neuss, Germany
| | - Hüseyin Ince
- Department of Cardiology, Vivantes Klinikum im Friedrichschain and Am Urban, Berlin, Germany
| | | | - Ralph Tölg
- Herzzentrum Segeberger Kliniken GmbH, Bad Segeberg, Germany
| | - Pedro Alves Lemos
- Instituto do Coração – HCFMUSP, University of Sao Paulo, São Paulo, Brazil
| | - Clemens von Birgelen
- Department of Cardiology, Medisch Spectrum Twente, Thoraxcentrum Twente, Enschede, the Netherlands
| | | | - William Wijns
- Cardiology Department, Cardiovascular Research Center Aalst, OLV Hospital, Aalst, Belgium
| | - Javier Escaned
- Department of Cardiology, Hospital Clinico San Carlos, Madrid, Spain
| | | | - Ron Waksman
- Section of Interventional Cardiology, MedStar Washington Hospital Center, 110 Irving Street NW, Suite 4B-1, Washington, DC, USA
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Quadri G, Cerrato E, Rolfo C, Varbella F. Spontaneous coronary artery dissection treated with magnesium-made bioresorbable scaffold: 1-Year angiographic and optical coherence tomography follow-up. Catheter Cardiovasc Interv 2018; 93:E130-E133. [DOI: 10.1002/ccd.27971] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 10/16/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Giorgio Quadri
- Interventional Cardiology Unit, ASL TO3; Infermi Hospital; Rivoli Italy
- San Luigi Gonzaga Hospital; Orbassano Italy
| | - Enrico Cerrato
- Interventional Cardiology Unit, ASL TO3; Infermi Hospital; Rivoli Italy
- San Luigi Gonzaga Hospital; Orbassano Italy
| | - Cristina Rolfo
- Interventional Cardiology Unit, ASL TO3; Infermi Hospital; Rivoli Italy
- San Luigi Gonzaga Hospital; Orbassano Italy
| | - Ferdinando Varbella
- Interventional Cardiology Unit, ASL TO3; Infermi Hospital; Rivoli Italy
- San Luigi Gonzaga Hospital; Orbassano Italy
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Haude M, Ince H, Kische S, Abizaid A, Tölg R, Alves Lemos P, Van Mieghem NM, Verheye S, von Birgelen C, Christiansen EH, Barbato E, Garcia-Garcia HM, Waksman R. Safety and clinical performance of a drug eluting absorbable metal scaffold in the treatment of subjects with de novo lesions in native coronary arteries: Pooled 12-month outcomes of BIOSOLVE-II and BIOSOLVE-III. Catheter Cardiovasc Interv 2018; 92:E502-E511. [PMID: 30079472 PMCID: PMC6586164 DOI: 10.1002/ccd.27680] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/30/2018] [Accepted: 05/15/2018] [Indexed: 11/09/2022]
Abstract
OBJECTIVES Based on outcomes of the BIOSOLVE-II study, a novel second generation drug-eluting absorbable metal scaffold gained CE-mark in 2016. The BIOSOLVE-III study aimed to confirm these outcomes and to obtain additional 12-month angiographic data. BACKGROUND Bioresorbable scaffolds are intended to overcome possible long-term effects of permanent stents such as chronic vessel wall inflammation, stent crushing, and fractures. METHODS The prospective, multicenter BIOSOLVE-II and BIOSOLVE-III studies enrolled 184 patients with 189 lesions (123 patients in BIOSOLVE-II and 61 patients in BIOSOLVE-III). Primary endpoints were in-segment late lumen loss at 6 months (BIOSOLVE-II) and procedural success (BIOSOLVE-III). RESULTS Mean patient age was 65.5 ± 10.8 years and mean lesion reference diameter was 2.70 ± 0.43 mm. In BIOSOLVE-III, there were significantly more type B2/C lesions than in BIOSOLVE-II (80.3% versus 43.4%, P < 0.0001) and significantly more moderate-to-severe calcifications (24.2% versus 10.7%, P = 0.014). At 12 months, there was no difference in late lumen loss between the two studies; in the overall population, it was 0.25 ± 0.31 mm in-segment and 0.39 ± 0.34 mm in-scaffold. Target lesion failure occurred in six patients (3.3%) and included two cardiac deaths, one target-vessel myocardial infarction, and three clinically driven target lesion revascularizations. No definite or probable scaffold thrombosis was observed. CONCLUSION The pooled outcomes of BIOSOLVE-II and BIOSOLVE-III provide further evidence on the safety and performance of a novel drug-eluting absorbable metal scaffold with constant clinical and angiographic performance parameters at 12 months and no definite or probable scaffold thrombosis.
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Affiliation(s)
- Michael Haude
- Medical Clinic I Städtische Kliniken Neuss Lukaskrankenhaus GmbH, Neuss, Germany
| | - Hüseyin Ince
- Department of Cardiology Vivantes Klinikum im Friedrichschain and Am Urban, Berlin, Germany.,Department of Cardiology, Universitätsmedizin Rostock, Germany
| | - Stephan Kische
- Department of Cardiology, Vivantes Klinikum im Friedrichschain, Berlin, Germany
| | | | - Ralph Tölg
- Herzzentrum Segeberger Kliniken GmbH, Bad Segeberg, Germany
| | - Pedro Alves Lemos
- Instituto do Coração - HCFMUSP University of Sao Paulo, São Paulo Brazil
| | | | - Stefan Verheye
- Interventional Cardiology Middelheim Hospital, Antwerpen, Belgium
| | | | | | - Emanuele Barbato
- OLV Hospital, Cardiovascular Research Center Aalst, Aalst, Belgium.,Department of Advanced Biomedical Sciences, University Federico II, Naples, Italy
| | - Hector M Garcia-Garcia
- Interventional Cardiology MedStar Washington Hospital Center, Washington, District of Columbia
| | - Ron Waksman
- Interventional Cardiology MedStar Washington Hospital Center, Washington, District of Columbia
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Windecker S, Piccolo R, Ueki Y. Long-Term Assessment of Bioresorbable Coronary Scaffolds: Disappearing Stents, Reappearing Atherosclerosis. J Am Coll Cardiol 2018; 71:1894-1896. [PMID: 29699615 DOI: 10.1016/j.jacc.2018.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 03/01/2018] [Indexed: 11/26/2022]
Affiliation(s)
- Stephan Windecker
- Department of Cardiology, Swiss Cardiovascular Center Bern, Bern University Hospital, Bern, Switzerland.
| | - Raffaele Piccolo
- Department of Cardiology, Swiss Cardiovascular Center Bern, Bern University Hospital, Bern, Switzerland; Division of Cardiology, Department of Advanced Biomedical Sciences, Federico II University, Naples, Italy
| | - Yasushi Ueki
- Department of Cardiology, Swiss Cardiovascular Center Bern, Bern University Hospital, Bern, Switzerland
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