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Zhao W, Yue C, Liu L, Liu Y, Leng J. Research Progress of Shape Memory Polymer and 4D Printing in Biomedical Application. Adv Healthc Mater 2022:e2201975. [PMID: 36520058 DOI: 10.1002/adhm.202201975] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 11/06/2022] [Indexed: 12/23/2022]
Abstract
As a kind of smart material, shape memory polymer (SMP) shows great application potential in the biomedical field. Compared with traditional metal-based medical devices, SMP-based devices have the following characteristics: 1) The adaptive ability allows the biomedical device to better match the surrounding tissue after being implanted into the body by minimally invasive implantation; 2) it has better biocompatibility and adjustable biodegradability; 3) mechanical properties can be regulated in a large range to better match with the surrounding tissue. 4D printing technology is a comprehensive technology based on smart materials and 3D printing, which has great application value in the biomedical field. 4D printing technology breaks through the technical bottleneck of personalized customization and provides a new opportunity for the further development of the biomedical field. This paper summarizes the application of SMP and 4D printing technology in the field of bone tissue scaffolds, tracheal scaffolds, and drug release, etc. Moreover, this paper analyzes the existing problems and prospects, hoping to provide a preliminary discussion and useful reference for the application of SMP in biomedical engineering.
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Affiliation(s)
- Wei Zhao
- Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), P.O. Box 301, No. 92 West Dazhi Street, Harbin, 150001, P. R. China
| | - Chengbin Yue
- Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), P.O. Box 301, No. 92 West Dazhi Street, Harbin, 150001, P. R. China
| | - Liwu Liu
- Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), P.O. Box 301, No. 92 West Dazhi Street, Harbin, 150001, P. R. China
| | - Yanju Liu
- Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), P.O. Box 301, No. 92 West Dazhi Street, Harbin, 150001, P. R. China
| | - Jinsong Leng
- Center for Composite Materials and Structures, Harbin Institute of Technology (HIT), P.O. Box 3011, No. 2 Yikuang Street, Harbin, 150080, P. R. China
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2
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Zhang Z, Zhu L, Hu W, Dai J, Ren P, Shao X, Xiong B, Zhang T, Ji Z. Polypropylene mesh combined with electrospun poly (L-lactic acid) membrane in situ releasing sirolimus and its anti-adhesion efficiency in rat hernia repair. Colloids Surf B Biointerfaces 2022; 218:112772. [PMID: 35985128 DOI: 10.1016/j.colsurfb.2022.112772] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/23/2022] [Accepted: 08/08/2022] [Indexed: 11/16/2022]
Abstract
This study developed, a novel polypropylene (PP) mesh combined with poly (L-lactic acid) (PLA) electrospun nanofibers loaded sirolimus (SRL). The PP mesh was combined with PLA/SRL (1/0, 1/0.01, 1/0.02; mass ratios) composed electrospun membrane characterized by FTIR spectroscopy, XPS and SEM, and evaluated for cytocompatibility in vitro. In an in vivo study, a total of 84 Sprague-Dawley rats were employed to evaluate the efficacy of the novel composite PP mesh anti-adhesion, mechanical properties and inflammation. As a results, the PLA/SRL membrane could compound with PP mesh stably and load SRL. Although tensile testing showed that the mechanical properties of composite mesh decreased in vivo, the integration strength between the tissue and mesh was still able to counteract intra-abdominal pressure. Compared with the native PP mesh group, the novel PP mesh group showed a lower score for abdominal adhesion and inflammation. More importantly, the novel PP mesh completely integrated with the abdominal wall and had sufficient mechanical strength to repair abdominal wall defects.
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Affiliation(s)
- Zhigang Zhang
- Department of General Surgery, Affiliated ZhongDa Hospital, Southeast University, Dingjiaqiao 87, Nanjing 210009, China; Medical School of Southeast University, Dingjiaqiao 87, Nanjing 210009, China
| | - Long Zhu
- Medical School of Southeast University, Dingjiaqiao 87, Nanjing 210009, China
| | - Wanjun Hu
- State Key Lab of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China; Department of light industry and materials science, Chengdu Textile College, Chengdu 611731, China.
| | - Jidong Dai
- State Key Lab of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Pengfei Ren
- State Key Lab of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Xiangyu Shao
- Department of General Surgery, Affiliated ZhongDa Hospital, Southeast University, Dingjiaqiao 87, Nanjing 210009, China
| | - Bo Xiong
- Department of General Surgery, Affiliated Zhong Da Hospital (Li Shui branch), Southeast University, China
| | - Tianzhu Zhang
- State Key Lab of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China.
| | - Zhenling Ji
- Department of General Surgery, Affiliated ZhongDa Hospital, Southeast University, Dingjiaqiao 87, Nanjing 210009, China; Department of General Surgery, Affiliated Zhong Da Hospital (Li Shui branch), Southeast University, China.
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Chavda VP, Jogi G, Paiva-Santos AC, Kaushik A. Biodegradable and removable implants for controlled drug delivery and release application. Expert Opin Drug Deliv 2022; 19:1177-1181. [PMID: 35929995 DOI: 10.1080/17425247.2022.2110065] [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: 11/04/2022]
Abstract
Conventional drug delivery route has several limitations such as hepatic first-pass metabolism, gastric issues, hypersensitivity reactions, etc. Additionally, such approaches are not found to be patient compliant, especially for chronic diseases. Conversely, implantable, polymeric drug delivery systems provide prolonged as well as controlled release of drug from the device implanted in the body. This editorial summarizes various types of implantable drug delivery systems along with their associated advantages and challenges. Additionally, recent advances in this field such as shape memory-based polymeric implants and 3-D printed implants are also discussed carefully and critically.
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Affiliation(s)
- Vivek P Chavda
- Department of Pharmaceutics and Pharmaceutical Technology, L. M. College of Pharmacy, Ahmedabad - 380009, Gujarat, India
| | - Gargi Jogi
- Department of Pharmaceutics and Pharmaceutical Technology, L. M. College of Pharmacy, Ahmedabad - 380009, Gujarat, India
| | - Ana Cláudia Paiva-Santos
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Polo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal.,REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Polo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Ajeet Kaushik
- School of Engineering, University of Petroleum and Energy Studies (UPES), Dehradun, Uttarakhand, India.,NanoBioTech Laboratory, Health Systems Engineering, Department of Natural Sciences, Florida Polytechnic University, Lakeland, Florida, USA
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Kim C, Lee SG, Lim S, Jung M, Kwon SP, Hong J, Kang M, Sohn HS, Go S, Moon S, Lee SJ, Kim JS, Kim BS. A Senolytic-Eluting Coronary Stent for the Prevention of In-Stent Restenosis. ACS Biomater Sci Eng 2022; 8:1921-1929. [PMID: 35416659 DOI: 10.1021/acsbiomaterials.1c01611] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The vast majority of drug-eluting stents (DES) elute either sirolimus or one of its analogues. While limus drugs stymie vascular smooth muscle cell (VSMC) proliferation to prevent in-stent restenosis, their antiproliferative nature is indiscriminate and limits healing of the endothelium in stented vessels, increasing the risk of late-stent thrombosis. Oxidative stress, which is associated with vascular injury from stent implantation, can induce VSMCs to undergo senescence, and senescent VSMCs can produce pro-inflammatory cytokines capable of inducing proliferation of neighboring nonsenescent VSMCs. We explored the potential of senolytic therapy, which involves the selective elimination of senescent cells, in the form of a senolytic-eluting stent (SES) for interventional cardiology. Oxidative stress was modeled in vitro by exposing VSMCs to H2O2, and H2O2-mediated senescence was evaluated by cytochemical staining of senescence-associated β-galactosidase activity and qRT-PCR. Quiescent VSMCs were then treated with the conditioned medium (CM) of H2O2-treated VSMCs. Proliferative effects of CM were analyzed by staining for proliferating cell nuclear antigen. Senolytic effects of the first-generation senolytic ABT263 were observed in vitro, and the effects of ABT263 on endothelial cells were also investigated through an in vitro re-endothelialization assay. SESs were prepared by dip coating. Iliofemoral arteries of hypercholesteremic rabbits were implanted with SES, everolimus-eluting stents (EESs), or bare-metal stents (BMSs), and the area of stenosis was measured 4 weeks post-implantation using optical coherence tomography. We found that a portion of H2O2-treated VSMCs underwent senescence, and that CM of H2O2-treated senescent VSMCs triggered the proliferation of quiescent VSMCs. ABT263 reverted H2O2-mediated senescence and the proliferative capacity of senescent VSMC CM. Unlike everolimus, ABT263 did not affect endothelial cell migration and/or proliferation. SES, but not EES, significantly reduced stenosis area in vivo compared with bare-metal stents (BMSs). This study shows the potential of SES as an alternative to current forms of DES.
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Affiliation(s)
- Cheesue Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Seul-Gee Lee
- Yonsei Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Songhyun Lim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Mungyo Jung
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung Pil Kwon
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jihye Hong
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Mikyung Kang
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hee Su Sohn
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Seokhyeong Go
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Sangjun Moon
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung-Jun Lee
- Cardiology Division, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Jung-Sun Kim
- Yonsei Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.,Cardiology Division, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea.,Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 08826, Republic of Korea.,Institute of Chemical Processes, Institute of Engineering Research, and BioMAX, Seoul National University, Seoul 08826, Republic of Korea
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Melocchi A, Uboldi M, Cerea M, Foppoli A, Maroni A, Moutaharrik S, Palugan L, Zema L, Gazzaniga A. Shape memory materials and 4D printing in pharmaceutics. Adv Drug Deliv Rev 2021; 173:216-237. [PMID: 33774118 DOI: 10.1016/j.addr.2021.03.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/09/2021] [Accepted: 03/18/2021] [Indexed: 12/18/2022]
Abstract
Shape memory materials (SMMs), including alloys and polymers, can be programmed into a temporary configuration and then recover the original shape in which they were processed in response to a triggering external stimulus (e.g. change in temperature or pH, contact with water). For this behavior, SMMs are currently raising a lot of attention in the pharmaceutical field where they could bring about important innovations in the current treatments. 4D printing involves processing of SMMs by 3D printing, thus adding shape evolution over time to the already numerous customization possibilities of this new manufacturing technology. SMM-based drug delivery systems (DDSs) proposed in the scientific literature were here reviewed and classified according to the target pursued through the shape recovery process. Administration route, therapeutic goal, temporary and original shape, triggering stimulus, main innovation features and possible room for improvement of the DDSs were especially highlighted.
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Antony GJM, Poulose P, Aruna ST, Shanuja SK, Gnanamani A, Suneetha YK, Raja S. Synthesis and Properties of a New Chitosan‐Based Shape Memory Polymer and its Composites. ChemistrySelect 2021. [DOI: 10.1002/slct.202004712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Priya Poulose
- Structural Technological Division CSIR-National Aerospace Laboratories Bangalore 560017 India
| | | | | | - Arumugam Gnanamani
- Microbiology Division CSIR- Central Leather Research Institute Chennai 600020
| | | | - Samikkannu Raja
- Structural Technological Division CSIR-National Aerospace Laboratories Bangalore 560017 India
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7
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Shape Memory Biomaterials and Their Clinical Applications. Biomed Mater 2021. [DOI: 10.1007/978-3-030-49206-9_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Zhang K, Xiao X, Wang X, Fan Y, Li X. Topographical patterning: characteristics of current processing techniques, controllable effects on material properties and co-cultured cell fate, updated applications in tissue engineering, and improvement strategies. J Mater Chem B 2019; 7:7090-7109. [DOI: 10.1039/c9tb01682a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Topographical patterning has recently attracted lots of attention in regulating cell fate, understanding the mechanism of cell–microenvironment interactions, and solving the great issues of regenerative medicine.
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Affiliation(s)
- Ke Zhang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100083
- China
| | - Xiongfu Xiao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100083
- China
| | - Xiumei Wang
- State Key Laboratory of New Ceramic and Fine Processing
- Tsinghua University
- Beijing 100084
- China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100083
- China
| | - Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100083
- China
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9
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Zhao W, Liu L, Zhang F, Leng J, Liu Y. Shape memory polymers and their composites in biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 97:864-883. [PMID: 30678978 DOI: 10.1016/j.msec.2018.12.054] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 12/17/2018] [Indexed: 11/29/2022]
Abstract
As a kind of intelligent material, shape memory polymer (SMP) can respond to outside stimuli and possesses good properties including shape memory effect, deformability and biological compatibility, etc. SMPs have been introduced for medical applications such as tissue engineering, biological sutures, stents and bladder sensors. Due to the shape memory effect, the medical devices based on SMP can be implanted into body through minimally invasive surgery in contraction or folded state and recovered to their requisite original shapes at target position. In this paper, a review of SMPs utilized in biomedical applications and their actuation methods are listed. Various biomedical applications and potential applications based on the beneficial properties of SMP are also summarized.
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Affiliation(s)
- Wei Zhao
- Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), P.O. Box 301, No. 92 West Dazhi Street, Harbin 150001, People's Republic of China
| | - Liwu Liu
- Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), P.O. Box 301, No. 92 West Dazhi Street, Harbin 150001, People's Republic of China
| | - Fenghua Zhang
- Centre for Composite Materials, Harbin Institute of Technology (HIT), P.O. Box 3011, No. 2 YiKuang Street, Harbin 150080, People's Republic of China
| | - Jinsong Leng
- Centre for Composite Materials, Harbin Institute of Technology (HIT), P.O. Box 3011, No. 2 YiKuang Street, Harbin 150080, People's Republic of China.
| | - Yanju Liu
- Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), P.O. Box 301, No. 92 West Dazhi Street, Harbin 150001, People's Republic of China.
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10
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Lin MC, Lou CW, Lin JY, Lin TA, Chou SY, Chen YS, Lin JH. Using spray-coating method to form PVA coronary artery stents: structure and property evaluations. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1497-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Shim JW, Bae IH, Park DS, Lee SY, Jang EJ, Lim KS, Park JK, Kim JH, Jeong MH. Hydrophilic surface modification of coronary stent using an atmospheric pressure plasma jet for endothelialization. J Biomater Appl 2017; 32:1083-1089. [DOI: 10.1177/0885328217748465] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The first two authors contributed equally to this study. Bioactivity and cell adhesion properties are major factors for fabricating medical devices such as coronary stents. The aim of this study was to evaluate the advantages of atmospheric-pressure plasma jet in enhancing the biocompatibility and endothelial cell-favorites. The experimental objects were divided into before and after atmospheric-pressure plasma jet treatment with the ratio of nitrogen:argon = 3:1, which is similar to air. The treated surfaces were basically characterized by means of a contact angle analyzer for the activation property on their surfaces. The effect of atmospheric-pressure plasma jet on cellular response was examined by endothelial cell adhesion and XTT analysis. It was difficult to detect any changeable morphology after atmospheric-pressure plasma jet treatment on the surface. The roughness was increased after atmospheric-pressure plasma jet treatment compared to nonatmospheric-pressure plasma jet treatment (86.781 and 7.964 nm, respectively). The X-ray photoelectron spectroscopy results showed that the surface concentration of the C–O groups increased slightly from 6% to 8% after plasma activation. The contact angle dramatically decreased in the atmospheric-pressure plasma jet treated group (22.6 ± 15.26°) compared to the nonatmospheric-pressure plasma jet treated group (72.4 ± 15.26°) ( n = 10, p < 0.05). The effect of the increment in hydrophilicity due to the atmospheric-pressure plasma jet on endothelial cell migration and proliferation was 85.2% ± 12.01% and 34.2% ± 2.68%, respectively, at 7 days, compared to the nonatmospheric-pressure plasma jet treated group (58.2% ± 11.44% in migration, n = 10, p < 0.05). Taken together, the stent surface could easily obtain a hydrophilic property by the atmospheric-pressure plasma jet method. Moreover, the atmospheric-pressure plasma jet might affect re-endothelialization after stenting.
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Affiliation(s)
- Jae Won Shim
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Republic of Korea
- Korea Cardiovascular Stent Research Institute, Jangsung, Korea
| | - In-Ho Bae
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Republic of Korea
- Korea Cardiovascular Stent Research Institute, Jangsung, Korea
| | - Dae Sung Park
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Republic of Korea
- Korea Cardiovascular Stent Research Institute, Jangsung, Korea
- Research Institute of Medical Sciences, Chonnam National University, Hwasun, Republic of Korea
| | - So-Youn Lee
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Republic of Korea
- Korea Cardiovascular Stent Research Institute, Jangsung, Korea
| | - Eun-Jae Jang
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Republic of Korea
- Korea Cardiovascular Stent Research Institute, Jangsung, Korea
| | - Kyung-Seob Lim
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Republic of Korea
| | - Jun-Kyu Park
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Republic of Korea
| | - Ju Han Kim
- Korea Cardiovascular Stent Research Institute, Jangsung, Korea
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Myung Ho Jeong
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Republic of Korea
- Korea Cardiovascular Stent Research Institute, Jangsung, Korea
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea
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ZHENG QUAN, CHU ZHAOWEI, LI XIAOMING, KANG HONGYAN, YANG XIAO, FAN YUBO. EFFECTS OF AQUEOUS MEDIUM, TWEEN-20 AND FLOW ON THE STABILITY OF SIROLIMUS. J MECH MED BIOL 2017. [DOI: 10.1142/s0219519417500397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Sirolimus-eluting stents have been widely used in the treatment of coronary artery disease. Prior to the clinical application, the in vitro drug release test is a mandatory requirement for the quality control of sirolimus-eluting stents. How to maintain the stability of sirolimus in the release medium is an important issue throughout the drug release research. In this study, the stability tests of sirolimus in three aqueous media (ultrapure water (UPW), normal saline (NS) and phosphate-buffered saline (PBS, pH 7.4)) were carried out. It was found that the half-lives of sirolimus in UPW, NS and PBS (pH 7.4) were, respectively, 111.8, 43.6 and 11.5[Formula: see text]h. Tween-20 was then added to the above-mentioned three aqueous media and was shown to improve the solubility and stability of sirolimus in aqueous solutions. Under static conditions, the half-life value for sirolimus was significantly increased in the presence of Tween-20 (UPW, 3.5-fold; NS, 2.0-fold; PBS (pH 7.4), 2.7-fold). The effect of solution flow on the stability of sirolimus was also investigated in a flow loop apparatus to mimic vessel-like flow conditions. There was a significant decrease in the stability of sirolimus in aqueous media with the increase of flow rate. The results suggest that aqueous solution supplemented with Tween-20 could be used as the release medium for sirolimus-eluting stents, and that the circulation of the release medium should be controlled at low flow rate.
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Affiliation(s)
- QUAN ZHENG
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, P. R. China
| | - ZHAOWEI CHU
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, P. R. China
| | - XIAOMING LI
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, P. R. China
| | - HONGYAN KANG
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, P. R. China
| | - XIAO YANG
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, P. R. China
| | - YUBO FAN
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, P. R. China
- National Research Center for Rehabilitation Technical Aids, Beijing 100176, P. R. China
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13
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Trant JF, Abd Rabo Moustafa MM, Sran I, Gillies ER. Polyisobutylene-paclitaxel conjugates with pendant carboxylic acids and polystyrene chains: Towards multifunctional stent coatings with slow drug release. JOURNAL OF POLYMER SCIENCE PART A: POLYMER CHEMISTRY 2016; 54:2209-2219. [DOI: 10.1002/pola.28094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- John F. Trant
- Department of Chemistry; The University of Western Ontario; 1151 Richmond St London Canada N6A 5B7
| | | | - Inderpreet Sran
- Department of Chemistry; The University of Western Ontario; 1151 Richmond St London Canada N6A 5B7
| | - Elizabeth R. Gillies
- Department of Chemistry; The University of Western Ontario; 1151 Richmond St London Canada N6A 5B7
- Department of Chemical and Biochemical Engineering; The University of Western Ontario; 1151 Richmond St London Canada N6A 5B9
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Wronska MA, O'Connor IB, Tilbury MA, Srivastava A, Wall JG. Adding Functions to Biomaterial Surfaces through Protein Incorporation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:5485-5508. [PMID: 27164952 DOI: 10.1002/adma.201504310] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 03/16/2016] [Indexed: 06/05/2023]
Abstract
The concept of biomaterials has evolved from one of inert mechanical supports with a long-term, biologically inactive role in the body into complex matrices that exhibit selective cell binding, promote proliferation and matrix production, and may ultimately become replaced by newly generated tissues in vivo. Functionalization of material surfaces with biomolecules is critical to their ability to evade immunorecognition, interact productively with surrounding tissues and extracellular matrix, and avoid bacterial colonization. Antibody molecules and their derived fragments are commonly immobilized on materials to mediate coating with specific cell types in fields such as stent endothelialization and drug delivery. The incorporation of growth factors into biomaterials has found application in promoting and accelerating bone formation in osteogenerative and related applications. Peptides and extracellular matrix proteins can impart biomolecule- and cell-specificities to materials while antimicrobial peptides have found roles in preventing biofilm formation on devices and implants. In this progress report, we detail developments in the use of diverse proteins and peptides to modify the surfaces of hard biomaterials in vivo and in vitro. Chemical approaches to immobilizing active biomolecules are presented, as well as platform technologies for isolation or generation of natural or synthetic molecules suitable for biomaterial functionalization.
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Affiliation(s)
- Małgorzata A Wronska
- Microbiology and Center for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Iain B O'Connor
- Microbiology and Center for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Maura A Tilbury
- Microbiology and Center for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Akshay Srivastava
- Microbiology and Center for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - J Gerard Wall
- Microbiology and Center for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
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15
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Trant JF, McEachran MJ, Sran I, Turowec BA, de Bruyn JR, Gillies ER. Covalent Polyisobutylene-Paclitaxel Conjugates for Controlled Release from Potential Vascular Stent Coatings. ACS APPLIED MATERIALS & INTERFACES 2015; 7:14506-14517. [PMID: 26066902 DOI: 10.1021/acsami.5b04001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The development of covalent polyisobutylene (PIB)-paclitaxel (PTX) conjugates as a potential approach to controlling drug release from vascular stent coatings is described. PIB-PTX materials containing ∼24 and ∼48 wt % PTX, conjugated via ester linkages, were prepared. The PTX release profiles were compared with those of physical mixtures of PTX with carboxylic acid-functionalized PIB and with the triblock copolymer polystyrene-b-PIB-b-polystyrene (SIBS). Covalent conjugation led to significantly slower drug release. Atomic force microscopy imaging of coatings of the materials suggested that the physical mixtures exhibited multiple domains corresponding to phase separation, whereas the materials in which PTX was covalently conjugated appeared homogeneous. Coatings of the conjugated materials on stainless steel surfaces suffered less surface erosion than the physically mixed materials, remained intact, and adhered well to the surface throughout the thirty-five day study. Tensile testing and rheological studies suggested that the incorporation of PTX into the polymer introduces similar physical changes to the PIB as the incorporation of a glassy polystyrene block does in SIBS. Cytotoxicity assays showed that the coatings did not release toxic levels of PTX or other species into a cell culture medium over a 24 h period, yet the levels of PTX in the materials were sufficient to prevent C2C12 cells from adhering to and proliferating on them. Overall, these results indicate that covalent PIB-PTX conjugates have promise as coatings for vascular stents.
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Affiliation(s)
- John F Trant
- †Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London N6A 5B7, Canada
| | - Matthew J McEachran
- †Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London N6A 5B7, Canada
| | - Inderpreet Sran
- ‡Department of Chemical and Biochemical Engineering, The University of Western Ontario, 1151 Richmond Sreet, London N6A 5B9, Canada
| | - Bethany A Turowec
- §Biomedical Engineering Graduate Program, The University of Western Ontario, 1151 Richmond Street, London N6A 5B9, Canada
| | - John R de Bruyn
- ∥Department of Physics and Astronomy, The University of Western Ontario, 1151 Richmond Street, London N6A 5B7, Canada
| | - Elizabeth R Gillies
- †Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London N6A 5B7, Canada
- ‡Department of Chemical and Biochemical Engineering, The University of Western Ontario, 1151 Richmond Sreet, London N6A 5B9, Canada
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Jaworska J, Jelonek K, Sobota M, Kasperczyk J, Dobrzynski P, Musial-Kulik M, Smola-Dmochowska A, Janeczek H, Jarzabek B. Shape-memory bioresorbable terpolymer composite with antirestenotic drug. J Appl Polym Sci 2015. [DOI: 10.1002/app.41902] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Joanna Jaworska
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M. Curie Sklodowskiej 34 Zabrze Poland
| | - Katarzyna Jelonek
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M. Curie Sklodowskiej 34 Zabrze Poland
| | - Michal Sobota
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M. Curie Sklodowskiej 34 Zabrze Poland
| | - Janusz Kasperczyk
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M. Curie Sklodowskiej 34 Zabrze Poland
- Department of Biopharmacy, School of Pharmacy; Medical University of Silesia; Narcyzow 1 Sosnowiec Poland
| | - Piotr Dobrzynski
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M. Curie Sklodowskiej 34 Zabrze Poland
- Jan Dlugosz University in Czestochowa, Institute of Chemistry; Environmental Protection and Biotechnology; Armii Krajowej 13 Czestochowa Poland
| | - Monika Musial-Kulik
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M. Curie Sklodowskiej 34 Zabrze Poland
| | - Anna Smola-Dmochowska
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M. Curie Sklodowskiej 34 Zabrze Poland
| | - Henryk Janeczek
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M. Curie Sklodowskiej 34 Zabrze Poland
| | - Bozena Jarzabek
- Centre of Polymer and Carbon Materials; Polish Academy of Sciences; M. Curie Sklodowskiej 34 Zabrze Poland
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17
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He Y, Wang J, Yan W, Huang N. Gallic acid and gallic acid-loaded coating involved in selective regulation of platelet, endothelial and smooth muscle cell fate. RSC Adv 2014. [DOI: 10.1039/c3ra44217a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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18
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Du K, Gan Z. Shape memory behaviour of HA-g-PDLLA nanocomposites prepared via in situ polymerization. J Mater Chem B 2014; 2:3340-3348. [DOI: 10.1039/c3tb21861a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
HA nanoparticles grafted in a PDLLA matrix play an important role for HA-g-PDLLA nanocomposites with excellent shape memory properties.
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Affiliation(s)
- Ke Du
- The CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190, China
- The State Key Laboratory of Organic-Inorganic Composites
| | - Zhihua Gan
- The CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190, China
- The State Key Laboratory of Organic-Inorganic Composites
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Yang CS, Wu HC, Sun JS, Hsiao HM, Wang TW. Thermo-induced shape-memory PEG-PCL copolymer as a dual-drug-eluting biodegradable stent. ACS APPLIED MATERIALS & INTERFACES 2013; 5:10985-10994. [PMID: 24111673 DOI: 10.1021/am4032295] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this work, a thermo-induced shape-memory drug-eluting stent (SMDES) has been developed by cross-linking PEG-PCL copolymer (cPEG-PCL). The stent is able to perform the shape-memory effect from a temporary linear form to a permanent spiral shape with the transition temperature close to body temperature. The stent incorporates a controlled dual drug-release system for the purpose of preventing in-stent restenosis of the vessel for short- and long-term therapeutic effects. From the results, (1)H NMR and GPC indicate that the compositions of PEG-PCL block copolymers are similar to the feed ratios of PEG/ε-CL. A Young's modulus of the cPEG-PCL stent can be achieved that ranges from tens to one hundred megapascals by modulation of the mixing ratio of PEG/PCL. The cPEG-PCL stent is demonstrated to recover to its permanent shape with a high fixing ratio (>99%), recovery ratio (>90%), and recovery time (<10 s). DSC data reveals that the transition temperature is around body temperature (40 °C). Cytotoxicity tests prove that the cPEG-PCL_6040 stent has good biocompatibility. In vitro degradation tests show that the cPEG-PCL_6040 stent undergoes a bulk degradation of 47% after 60 days of incubation under flow conditions. Platelet adhesion and smooth muscle cell proliferation were significantly inhibited by coculture with a mitomycin C/curcumin-eluting stent as a result of the release of curcumin for antiplatelet adhesion during the initial 2 weeks followed by long-term inhibition of smooth muscle cell hyperproliferation for 60 days via mitomycin C. After 60 days of incubation in a bioreactor, the appearance of the stent remains intact and shows no signs of recoiling or collapse.
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Affiliation(s)
- Chien-Shen Yang
- Department of Materials Science and Engineering, National Tsing Hua University , Hsinchu 30013, Taiwan
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Zhang K, Liu T, Li JA, Chen JY, Wang J, Huang N. Surface modification of implanted cardiovascular metal stents: From antithrombosis and antirestenosis to endothelialization. J Biomed Mater Res A 2013; 102:588-609. [PMID: 23520056 DOI: 10.1002/jbm.a.34714] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Revised: 03/08/2013] [Accepted: 03/11/2013] [Indexed: 12/31/2022]
Affiliation(s)
- Kun Zhang
- Key Laboratory of Advanced Technology for Materials of Chinese Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, People's Republic of China
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21
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Shaping tissue with shape memory materials. Adv Drug Deliv Rev 2013; 65:515-35. [PMID: 22727746 DOI: 10.1016/j.addr.2012.06.004] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 03/30/2012] [Accepted: 06/13/2012] [Indexed: 01/11/2023]
Abstract
After being severely and quasi-plastically deformed, shape memory materials are able to return to their original shape at the presence of the right stimulus. After a brief presentation about the fundamentals, including various shape memory effects, working mechanisms, and typical shape memory materials for biomedical applications, we summarize some major applications in shaping tissue with shape memory materials. The focus is on some most recent development. Outlook is also discussed at the end of this paper.
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22
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Naturally and synthetic smart composite biomaterials for tissue regeneration. Adv Drug Deliv Rev 2013; 65:471-96. [PMID: 22465488 DOI: 10.1016/j.addr.2012.03.009] [Citation(s) in RCA: 212] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 03/01/2012] [Accepted: 03/07/2012] [Indexed: 11/23/2022]
Abstract
The development of smart biomaterials for tissue regeneration has become the focus of intense research interest. More opportunities are available by the composite approach of combining the biomaterials in the form of biopolymers and/or bioceramics either synthetic or natural. Strategies to provide smart capabilities to the composite biomaterials primarily seek to achieve matrices that are instructive/inductive to cells, or that stimulate/trigger target cell responses that are crucial in the tissue regeneration processes. Here, we review in-depth, recent developments concerning smart composite biomaterials available for delivery systems of biofactors and cells and scaffolding matrices in tissue engineering. Smart composite designs are possible by modulating the bulk and surface properties that mimic the native tissues, either in chemical (extracellular matrix molecules) or in physical properties (e.g. stiffness), or by introducing external therapeutic molecules (drugs, proteins and genes) within the structure in a way that allows sustainable and controllable delivery, even time-dependent and sequential delivery of multiple biofactors. Responsiveness to internal or external stimuli, including pH, temperature, ionic strength, and magnetism, is another promising means to improve the multifunctionality in smart scaffolds with on-demand delivery potential. These approaches will provide the next-generation platforms for designing three-dimensional matrices and delivery systems for tissue regenerative applications.
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23
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Puranik AS, Dawson ER, Peppas NA. Recent advances in drug eluting stents. Int J Pharm 2012; 441:665-79. [PMID: 23117022 DOI: 10.1016/j.ijpharm.2012.10.029] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 10/17/2012] [Accepted: 10/18/2012] [Indexed: 12/18/2022]
Abstract
One of the most common medical interventions to reopen an occluded vessel is the implantation of a coronary stent. While this method of treatment is effective initially, restenosis, or the re-narrowing of the artery frequently occurs largely due to neointimal hyperplasia of smooth muscle cells. Drug eluting stents were developed in order to provide local, site-specific, controlled release of drugs that can inhibit neointima formation. By implementing a controlled release delivery system it may be possible to control the time release of the pharmacological factors and thus be able to bypass some of the critical events associated with stent hyperplasia and prevent the need for subsequent intervention. However, since the advent of first-generation drug eluting stents, long-term adverse effects have raised concerns regarding their safety. These limitations in safety and efficacy have triggered considerable research in developing biodegradable stents and more potent drug delivery systems. In this review, we shed light on the current state-of-the-art in drug eluting stents, problems related to them and highlight some of the ongoing research in this area.
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Affiliation(s)
- Amey S Puranik
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
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24
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Serrano MC, Ameer GA. Recent insights into the biomedical applications of shape-memory polymers. Macromol Biosci 2012; 12:1156-71. [PMID: 22887759 DOI: 10.1002/mabi.201200097] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 06/04/2012] [Indexed: 11/10/2022]
Abstract
Shape-memory polymers (SMP) are versatile stimuli-responsive materials that can switch, upon stimulation, from a temporary to a permanent shape. This advanced functionality makes SMP suitable and promising materials for diverse technological applications, including the fabrication of smart biomedical devices. In this paper, advances in the design of SMP are discussed, with emphasis on materials investigated for medical applications. Future directions necessary to bring SMP closer to their clinical application are also highlighted.
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Affiliation(s)
- Maria C Serrano
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Cantoblanco, Madrid 28049, Spain
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25
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Song L, Hu W, Wang G, Zhang H, Niu G, Cao H, Yang H, Zhu S. Synthesis and Characterization of Shape Memory (Meth)Acrylate Co-Polymers and their Cytocompatibility In Vitro. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 22:1-17. [DOI: 10.1163/092050609x12567412849136] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Li Song
- a School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Wang Hu
- b School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Guojie Wang
- c School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Hongbin Zhang
- d School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Guoguang Niu
- e School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Hui Cao
- f School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Huai Yang
- g School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Siquan Zhu
- h Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, P. R. China
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Lee CH, Chen CJ, Liu SJ, Hsiao CY, Chen JK. The Development of Novel Biodegradable Bifurcation Stents for the Sustainable Release of Anti-Proliferative Sirolimus. Ann Biomed Eng 2012; 40:1961-70. [DOI: 10.1007/s10439-012-0556-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Accepted: 03/21/2012] [Indexed: 12/18/2022]
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Xue L, Dai S, Li Z. Synthesis and characterization of elastic star shape-memory polymers as self-expandable drug-eluting stents. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15918j] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Han Y, Jin X, Yang J, Fan Z, Lu Z, Zhang Y, Li S. Totally bioresorbable composites prepared from poly(l
-lactide)-co
-(trimethylene carbonate) copolymers and poly(l
-lactide)-co
-(glycolide) fibers as cardiovascular stent material. POLYM ENG SCI 2011. [DOI: 10.1002/pen.22137] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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In-vitro release of anti-proliferative paclitaxel from novel balloon-expandable polycaprolactone stents. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2011.04.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Han DW, Jung DY, Park JC, Cho HH, Hyon SH, Han DK. Underlying mechanism for suppression of vascular smooth muscle cells by green tea polyphenol EGCG released from biodegradable polymers for stent application. J Biomed Mater Res A 2011; 95:424-33. [PMID: 20648542 DOI: 10.1002/jbm.a.32870] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Epigallocatechin-3-O-gallate (EGCG), the predominant catechin from tea, is known to exert a variety of cardiovascular beneficial effects by affecting the activity of receptor and signal transduction kinases. In this study, we investigated the suppressive effects of EGCG released from biodegradable poly(L-lactide-co-ε-caprolactone, PLCL) films on the proliferation, cell cycle progression and matrix metalloproteinase-2 (MMP-2) expression of vascular smooth muscle cells (VSMCs). The involvement of phosphorylated Akt (pAkt) and nuclear factor-κB (pNF-κB) as well as the internalization of EGCG into VSMCs was also examined as underlying mechanisms for EGCG-mediated VSMC inhibition. The proliferation of canine aortic SMCs (CASMCs) on EGCG-releasing PLCL (E-PLCL) was significantly inhibited. The culture of CASMCs on E-PLCL resulted in induction of cell cycle arrest at G(0)/G(1) phase and inactivation of pAkt, leading to subsequent apoptosis. Active MMP-2 expression was directly lowered by EGCG released from E-PLCL and indirectly inhibited by the EGCG-mediated suppression of pNF-κB. We also observed the incorporation of fluorescein isothiocyanate-conjugated EGCG into the cytoplasm of CASMCs and its further nuclear translocation, which could lead to the interruption of the exogenous signals directed to genes responsible for cellular responses of CASMCs. Taken together, the attenuated responses of VSMCs to E-PLCL were shown to be mediated through the suppression of pNF-κB, pAkt and each subsequent target genes or proteins by EGCG incorporated into the cells.
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Affiliation(s)
- Dong-Wook Han
- Department of Nanomedical Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan 609-735, Korea.
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Song L, Hu W, Wang G, Niu G, Zhang H, Cao H, Wang K, Yang H, Zhu S. Tailored (Meth)Acrylate Shape-Memory Polymer Networks for Ophthalmic Applications. Macromol Biosci 2010; 10:1194-202. [DOI: 10.1002/mabi.201000028] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hyun Kim J, Jin Kang T, Yu WR. Simulation of mechanical behavior of temperature-responsive braided stents made of shape memory polyurethanes. J Biomech 2010; 43:632-43. [DOI: 10.1016/j.jbiomech.2009.10.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2009] [Revised: 09/17/2009] [Accepted: 10/15/2009] [Indexed: 10/20/2022]
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Biggs MJP, Richards RG, Dalby MJ. Nanotopographical modification: a regulator of cellular function through focal adhesions. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2010; 6:619-33. [PMID: 20138244 DOI: 10.1016/j.nano.2010.01.009] [Citation(s) in RCA: 327] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2009] [Revised: 12/02/2009] [Accepted: 01/07/2010] [Indexed: 12/25/2022]
Abstract
UNLABELLED As materials technology and the field of biomedical engineering advances, the role of cellular mechanisms, in particular adhesive interactions with implantable devices, becomes more relevant in both research and clinical practice. A key tenet of medical device design has evolved from the exquisite ability of biological systems to respond to topographical features or chemical stimuli, a process that has led to the development of next-generation biomaterials for a wide variety of clinical disorders. In vitro studies have identified nanoscale features as potent modulators of cellular behavior through the onset of focal adhesion formation. The focus of this review is on the recent developments concerning the role of nanoscale structures on integrin-mediated adhesion and cellular function with an emphasis on the generation of medical constructs with regenerative applications. FROM THE CLINICAL EDITOR In this review, recent developments related to the role of nanoscale structures on integrin-mediated adhesion and cellular function is discussed, with an emphasis on regenerative applications.
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Affiliation(s)
- Manus Jonathan Paul Biggs
- Nanotechnology Center for Mechanics in Regenerative Medicine, Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, USA.
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Huang WM, Yang B, Zhao Y, Ding Z. Thermo-moisture responsive polyurethane shape-memory polymer and composites: a review. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b922943d] [Citation(s) in RCA: 307] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Mechanical properties, drug eluting characteristics and in vivo performance of a genipin-crosslinked chitosan polymeric stent. Biomaterials 2009; 30:5560-71. [DOI: 10.1016/j.biomaterials.2009.06.039] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2009] [Accepted: 06/19/2009] [Indexed: 11/24/2022]
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Abstract
Biodegradable novel poly(D,L-lactide)-based shape memory polymers (SMPs) were prepared from poly(D,L-lactide) (PDLLA) Diols, hexamethylene diisocyanate(HDI) and butanediamine(BDA) via two steps polymerization reaction. Its thermal, mechanical properties and shape-memory behaviors were investigated by means of differential scanning calorimetry, stress-strain measurements and bending test. The glass transition temperature of the SMPs changes with composition from 38 to 45°C which close to body temperature in a predictable manner. These type SMPs can achieve the high modulus and tensile strength, and their elongation at break can be greater than 500% at lower hard segment content. All SMPs display excellent shape-memory properties. When a deformation temperature 20°C above Tg was chosen, the ratio of the shape-memory fixation approximately 100%, and the recovery ratio was 95-100%. Meanwhile, the recovery time is relevant to the recovery temperature, the recovery time decrease with increasing the recovery temperature. By adjusting the composition of SMPs, the recovery temperature could be adjusted to the neighborhood of the body temperature and it can be designed as potential biomaterials for use in biomedical fields.
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Han DW, Lee JJ, Jung DY, Park JC, Hyon SH. Development of epigallocatechin gallate-eluting polymeric stent and its physicochemical, biomechanical and biological evaluations. Biomed Mater 2009; 4:044104. [DOI: 10.1088/1748-6041/4/4/044104] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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A nanoscale drug-entrapment strategy for hydrogel-based systems for the delivery of poorly soluble drugs. Biomaterials 2009; 30:2102-11. [DOI: 10.1016/j.biomaterials.2008.12.047] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2008] [Accepted: 12/19/2008] [Indexed: 11/20/2022]
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41
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Controlled Drug Release from Biodegradable Shape-Memory Polymers. SHAPE-MEMORY POLYMERS 2009. [DOI: 10.1007/12_2009_29] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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