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Zhao Y, Wang Y, Chen L, Bai L, Guan S. Co-immobilization of natural marine polysaccharides and bioactive peptides on ZE21B magnesium alloy to enhance hemocompatibility and cytocompatibility. Int J Biol Macromol 2024; 272:132747. [PMID: 38821301 DOI: 10.1016/j.ijbiomac.2024.132747] [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: 03/13/2024] [Revised: 05/21/2024] [Accepted: 05/28/2024] [Indexed: 06/02/2024]
Abstract
Degradable magnesium alloy stents are considered to be ideal candidates to replace the traditional non-degradable stents for the treatment of cardiovascular diseases. However, bare magnesium alloy stents usually degrade too fast and show poor hemocompatibility and cytocompatibility, which seriously affects their clinical use. In this study, surface modification based on the MgF2 layer, polydopamine (PDA) coating, fucoidan and CAG peptides was performed on the Mg-Zn-Y-Nd (ZE21B) magnesium alloy with the purpose of improving its corrosion resistance, hemocompatibility and cytocompatibility for vascular stent application. After modification, the ZE21B alloy showed better corrosion resistance. Moreover, the lower hemolysis rate, platelet adhesion and activation, and fibrinogen adsorption and denaturation proved the improved hemocompatibility of modified ZE21B alloy in in vitro blood experiments. Furthermore, the co-immobilization of fucoidan and CAG peptides significantly promoted the adhesion, proliferation, migration and NO release of endothelial cells (ECs) on the modified ZE21B alloy, and meanwhile the modification with fucoidan and CAG peptides inhibited the adhesion and proliferation of smooth muscle cells (SMCs) and suppressed the expression of proinflammatory factors in the macrophages (MAs). The surface modification obviously enhanced the corrosion resistance, hemocompatibility and cytocompatibility of ZE21B alloy, and provided an effective strategy for the development of degradable vascular stents.
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Affiliation(s)
- Yuan Zhao
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Advanced Magnesium Alloys, Zhengzhou 450002, China
| | - Yahui Wang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Advanced Magnesium Alloys, Zhengzhou 450002, China
| | - Lan Chen
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Advanced Magnesium Alloys, Zhengzhou 450002, China
| | - Lingchuang Bai
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Advanced Magnesium Alloys, Zhengzhou 450002, China.
| | - Shaokang Guan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Advanced Magnesium Alloys, Zhengzhou 450002, China; Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou 450002, China.
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Diao W, Li P, Jiang X, Zhou J, Yang S. Progress in copper-based materials for wound healing. Wound Repair Regen 2024; 32:314-322. [PMID: 37822053 DOI: 10.1111/wrr.13122] [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: 04/19/2023] [Revised: 07/19/2023] [Accepted: 09/05/2023] [Indexed: 10/13/2023]
Abstract
Chronic wounds have become the leading cause of death, particularly among diabetic patients. Chronic wounds affect ~6.5 million patients each year, according to statistics, and wound care and management incur significant financial costs. The rising prevalence of chronic wounds, combined with the limitations of current treatments, necessitates the development of new and innovative approaches to accelerate wound healing. Copper has been extensively studied for its antibacterial and anti-inflammatory activities. Copper in its nanoparticle form could have better biological properties and many applications in health care.
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Affiliation(s)
- Wuliang Diao
- Department of Plastic Surgery, Xiangya Third Hospital, Central South University, Changsha, Hunan, China
| | - Peiting Li
- Department of Plastic Surgery, Xiangya Third Hospital, Central South University, Changsha, Hunan, China
| | - Xilin Jiang
- Department of General Surgery, Zhongfang Hospital, Hunan University of Medicine, Huaihua, Hunan, China
| | - Jianda Zhou
- Department of Plastic Surgery, Xiangya Third Hospital, Central South University, Changsha, Hunan, China
| | - Songbo Yang
- Department of General Surgery, People's Hospital of Tianzhu County, Guizhou, China
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Phan T, Jones JE, Chen M, Strawn T, Khoukaz HB, Ji Y, Kumar A, Bowles DK, Fay WP, Yu Q. In vitro biological responses of plasma nanocoatings for coronary stent applications. J Biomed Mater Res A 2023; 111:1768-1780. [PMID: 37465994 PMCID: PMC10529135 DOI: 10.1002/jbm.a.37587] [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: 03/16/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 07/20/2023]
Abstract
In-stent restenosis and thrombosis remain to be long-term challenges in coronary stenting procedures. The objective of this study was to evaluate the in vitro biological responses of trimethylsilane (TMS) plasma nanocoatings modified with NH3 /O2 (2:1 molar ratio) plasma post-treatment (TMS + NH3 /O2 nanocoatings) on cobalt chromium (CoCr) alloy L605 coupons, L605 stents, and 316L stainless steel (SS) stents. Surface properties of the plasma nanocoatings with up to 2-year aging time were characterized by wettability assessment and x-ray photoelectron spectroscopy (XPS). It was found that TMS + NH3 /O2 nanocoatings had a surface composition of 41.21 ± 1.06 at% oxygen, 31.90 ± 1.08 at% silicon, and 24.12 ± 1.7 at% carbon, and very small but essential amount of 2.77 ± 0.18 at% nitrogen. Surface chemical stability of the plasma coatings was noted with persistent O/Si atomic ratio of 1.292-1.413 and N/Si atomic ratio of ~0.087 through 2 years. The in vitro biological responses of plasma nanocoatings were studied by evaluating the cell proliferation and migration of porcine coronary artery endothelial cells (PCAECs) and smooth muscle cells (PCASMCs). 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium (MTT) assay results revealed that, after 7-day incubation, TMS + NH3 /O2 nanocoatings maintained a similar level of PCAEC proliferation while showing a decrease in the viability of PCASMCs by 73 ± 19% as compared with uncoated L605 surfaces. Cell co-culture of PCAECs and PCASMCs results showed that, the cell ratio of PCAEC/PCASMC on TMS + NH3 /O2 nanocoating surfaces was 1.5-fold higher than that on uncoated L605 surfaces, indicating enhanced selectivity for promoting PCAEC growth. Migration test showed comparable PCAEC migration distance for uncoated L605 and TMS + NH3 /O2 nanocoatings. In contrast, PCASMC migration distance was reduced nearly 8.5-fold on TMS + NH3 /O2 nanocoating surfaces as compared to the uncoated L605 surfaces. Platelet adhesion test using porcine whole blood showed lower adhered platelets distribution (by 70 ± 16%), reduced clotting attachment (by 54 ± 12%), and less platelet activation on TMS + NH3 /O2 nanocoating surfaces as compared with the uncoated L605 controls. It was further found that, under shear stress conditions of simulated blood flow, TMS + NH3 /O2 nanocoating significantly inhibited platelet adhesion compared to the uncoated 316L SS stents and TMS nanocoated 316L SS stents. These results indicate that TMS + NH3 /O2 nanocoatings are very promising in preventing both restenosis and thrombosis for coronary stent applications.
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Affiliation(s)
- ThiThuHa Phan
- Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211
| | - John E. Jones
- Nanova, Inc., 1601 S Providence Rd, Columbia, MO 65211
| | - Meng Chen
- Nanova, Inc., 1601 S Providence Rd, Columbia, MO 65211
| | - T.L. Strawn
- Department of Medicine, Division of Cardiovascular Medicine, School of Medicine, University of Missouri, Columbia, MO 65212
| | - Hekmat B. Khoukaz
- Department of Medicine, Division of Cardiovascular Medicine, School of Medicine, University of Missouri, Columbia, MO 65212
| | - Yan Ji
- Department of Medicine, Division of Cardiovascular Medicine, School of Medicine, University of Missouri, Columbia, MO 65212
| | - Arun Kumar
- Department of Medicine, Division of Cardiovascular Medicine, School of Medicine, University of Missouri, Columbia, MO 65212
| | - Douglas K. Bowles
- Department of Biomedical Sciences, University of Missouri, Columbia, MO 65211
| | - William P. Fay
- Department of Medicine, Division of Cardiovascular Medicine, School of Medicine, University of Missouri, Columbia, MO 65212
| | - Qingsong Yu
- Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211
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Phan T, Jones JE, Chen M, Bowles DK, Fay WP, Yu Q. A Biocompatibility Study of Plasma Nanocoatings onto Cobalt Chromium L605 Alloy for Cardiovascular Stent Applications. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5968. [PMID: 36079346 PMCID: PMC9457435 DOI: 10.3390/ma15175968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
The objective of this study was to evaluate the biocompatibility of trimethylsilane (TMS) plasma nanocoatings modified with NH3/O2 (2:1 molar ratio) plasma post-treatment onto cobalt chromium (CoCr) L605 alloy coupons and stents for cardiovascular stent applications. Biocompatibility of plasma nanocoatings was evaluated by coating adhesion, corrosion behavior, ion releasing, cytotoxicity, and cell proliferation. Surface chemistry and wettability were studied to understand effects of surface properties on biocompatibility. Results show that NH3/O2 post-treated TMS plasma nanocoatings are hydrophilic with water contact angle of 48.5° and have a typical surface composition of O (39.39 at.%), Si (31.92 at.%), C (24.12 at.%), and N (2.77 at.%). The plasma nanocoatings were conformal to substrate surface topography and had excellent adhesion to the alloy substrates, as assessed by tape test (ASTM D3359), and showed no cracking or peeling off L605 stent surfaces after dilation. The plasma nanocoatings also improve the corrosion resistance of CoCr L605 alloy by increasing corrosion potential and decreasing corrosion rates with no pitting corrosion and no mineral adsorption layer. Ion releasing test revealed that Co, Cr, and Ni ion concentrations were reduced by 64-79%, 67-69%, and 57-72%, respectively, in the plasma-nanocoated L605 samples as compared to uncoated L605 control samples. The plasma nanocoatings showed no sign of cytotoxicity from the test results according to ISO 10993-05 and 10993-12. Seven-day cell culture demonstrated that, in comparison with the uncoated L605 control surfaces, the plasma nanocoating surfaces showed 62 ± 7.3% decrease in porcine coronary artery smooth muscle cells (PCASMCs) density and had comparable density of porcine coronary artery endothelial cells (PCAECs). These results suggest that TMS plasma nanocoatings with NH3/O2 plasma post-treatment possess the desired biocompatibility for stent applications and support the hypothesis that nanocoated stents could be very effective for in-stent restenosis prevention.
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Affiliation(s)
- Thithuha Phan
- Department of Mechanical Engineering, University of Missouri, Columbia, MO 65211, USA
| | - John E. Jones
- Nanova, Inc., 1601 S Providence Rd., Columbia, MO 65211, USA
| | - Meng Chen
- Nanova, Inc., 1601 S Providence Rd., Columbia, MO 65211, USA
| | - Doug K. Bowles
- Department of Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA
| | - William P. Fay
- Department of Medicine, Division of Cardiovascular Medicine, School of Medicine, University of Missouri, Columbia, MO 65212, USA
| | - Qingsong Yu
- Department of Mechanical Engineering, University of Missouri, Columbia, MO 65211, USA
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Chu T, Dai C, Li X, Gao L, Yin H, Ge J. Extravascular rapamycin film inhibits the endothelial-to-mesenchymal transition through the autophagy pathway to prevent vein graft restenosis. BIOMATERIALS ADVANCES 2022; 137:212836. [PMID: 35929241 DOI: 10.1016/j.bioadv.2022.212836] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/17/2022] [Accepted: 04/28/2022] [Indexed: 06/15/2023]
Abstract
Following vein grafting, the vein must adapt to arterial hemodynamics, which can lead to intimal hyperplasia (IH) and restenosis. Moreover, endothelial-to-mesenchymal transition (EndMT) components are highly associated with IH. Therefore, in this study, we aimed to design an extravascular film loaded with rapamycin (extravascular rapamycin film [ERF]) to limit vein graft stenosis. The film exhibited stable physicochemical properties as well as in vivo and in vitro biocompatibility. In vivo, the film inhibited the EndMT by activating the autophagy pathway. Moreover, rapamycin enhanced this biological effect. Collectively, these findings highlighted the applicability of ERF as a new therapeutic target for preventing vein graft restenosis.
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Affiliation(s)
- Tianshu Chu
- Department of Cardiac Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230001, China
| | - Chun Dai
- Department of Cardiac Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230001, China
| | - Xiang Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Lei Gao
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230031, China
| | - Hongyan Yin
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230031, China
| | - Jianjun Ge
- Department of Cardiac Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230001, China.
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Zhang E, Zhao X, Hu J, Wang R, Fu S, Qin G. Antibacterial metals and alloys for potential biomedical implants. Bioact Mater 2021; 6:2569-2612. [PMID: 33615045 PMCID: PMC7876544 DOI: 10.1016/j.bioactmat.2021.01.030] [Citation(s) in RCA: 142] [Impact Index Per Article: 47.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/11/2021] [Accepted: 01/27/2021] [Indexed: 02/07/2023] Open
Abstract
Metals and alloys, including stainless steel, titanium and its alloys, cobalt alloys, and other metals and alloys have been widely used clinically as implant materials, but implant-related infection or inflammation is still one of the main causes of implantation failure. The bacterial infection or inflammation that seriously threatens human health has already become a worldwide complaint. Antibacterial metals and alloys recently have attracted wide attention for their long-term stable antibacterial ability, good mechanical properties and good biocompatibility in vitro and in vivo. In this review, common antibacterial alloying elements, antibacterial standards and testing methods were introduced. Recent developments in the design and manufacturing of antibacterial metal alloys containing various antibacterial agents were described in detail, including antibacterial stainless steel, antibacterial titanium alloy, antibacterial zinc and alloy, antibacterial magnesium and alloy, antibacterial cobalt alloy, and other antibacterial metals and alloys. Researches on the antibacterial properties, mechanical properties, corrosion resistance and biocompatibility of antibacterial metals and alloys have been summarized in detail for the first time. It is hoped that this review could help researchers understand the development of antibacterial alloys in a timely manner, thereby could promote the development of antibacterial metal alloys and the clinical application. This paper focuses the recent development of several antibacterial metals and alloys as biomedical materials. The possible antibacterial mechanisms of antibacterial metals and alloys are summarized in this paper. This review discusses the feasibility of antibacterial metals and alloys as biomedical implants in the future.
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Affiliation(s)
- Erlin Zhang
- Key Lab. for Anisotropy and Texture of Materials, Education Ministry of China, School of Materials Science and Engineering, Northeastern University, Shenyang, 150819, China.,Research Center for Metallic Wires, Northeastern University, Shenyang, 110819, China
| | - Xiaotong Zhao
- Key Lab. for Anisotropy and Texture of Materials, Education Ministry of China, School of Materials Science and Engineering, Northeastern University, Shenyang, 150819, China
| | - Jiali Hu
- Key Lab. for Anisotropy and Texture of Materials, Education Ministry of China, School of Materials Science and Engineering, Northeastern University, Shenyang, 150819, China
| | - Ruoxian Wang
- Key Lab. for Anisotropy and Texture of Materials, Education Ministry of China, School of Materials Science and Engineering, Northeastern University, Shenyang, 150819, China
| | - Shan Fu
- Key Lab. for Anisotropy and Texture of Materials, Education Ministry of China, School of Materials Science and Engineering, Northeastern University, Shenyang, 150819, China
| | - Gaowu Qin
- Key Lab. for Anisotropy and Texture of Materials, Education Ministry of China, School of Materials Science and Engineering, Northeastern University, Shenyang, 150819, China.,Research Center for Metallic Wires, Northeastern University, Shenyang, 110819, China
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