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Yang H, Zhang F, Xu H, Wang J, Li H, Li L, Shao M, Wang H, Pei J, Niu J, Yuan G, Lyu F. Anatomical Brushite-Coated Mg-Nd-Zn-Zr Alloy Cage Promotes Cervical Fusion: One-Year Results in Goats. ACS Biomater Sci Eng 2024; 10:1753-1764. [PMID: 38351646 DOI: 10.1021/acsbiomaterials.3c01364] [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] [Indexed: 03/12/2024]
Abstract
In this study, an anatomical brushite-coated Mg-Nd-Zn-Zr alloy cage was fabricated for cervical fusion in goats. The purpose of this study was to investigate the cervical fusion effect and degradation characteristics of this cage in goats. The Mg-Nd-Zn-Zr alloy cage was fabricated based on anatomical studies, and brushite coating was prepared. Forty-five goats were divided into three groups, 15 in each group, and subjected to C2/3 anterior cervical decompression and fusion with tricortical bone graft, Mg-Nd-Zn-Zr alloy cage, or brushite-coated Mg-Nd-Zn-Zr alloy cage, respectively. Cervical radiographs and computed tomography (CT) were performed 3, 6, and 12 months postoperatively. Blood was collected for biocompatibility analysis and Mg2+ concentration tests. The cervical spine specimens were obtained at 3, 6, and 12 months postoperatively for biomechanical, micro-CT, scanning electron microscopy coupled with energy dispersive spectroscopy, laser ablation-inductively coupled plasma-time-of-flight mass spectrometry, and histological analysis. The liver and kidney tissues were obtained for hematoxylin and eosin staining 12 months after surgery for biosafety analysis. Imaging and histological analysis showed a gradual improvement in interbody fusion over time; the fusion effect of the brushite-coated Mg-Nd-Zn-Zr alloy cage was comparable to that of the tricortical bone graft, and both were superior to that of the Mg-Nd-Zn-Zr alloy cage. Biomechanical testing showed that the brushite-coated Mg-Nd-Zn-Zr alloy cage achieved better stability than the tricortical bone graft at 12 months postoperatively. Micro-CT showed that the brushite coating significantly decreases the corrosion rate of the Mg-Nd-Zn-Zr alloy cage. In vivo degradation analysis showed higher Ca and P deposition in the degradation products of the brushite-coated Mg-Nd-Zn-Zr alloy cage, and no hyperconcentration of Mg was detected. Biocompatibility analysis showed that both cages were safe for cervical fusion surgery in goats. To conclude, the anatomical brushite-coated Mg-Nd-Zn-Zr alloy cage can promote cervical fusion in goats, and the brushite-coated Mg-Nd-Zn-Zr alloy is a potential material for developing absorbable fusion cages.
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Affiliation(s)
- Haiyuan Yang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Fan Zhang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Haocheng Xu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Jin Wang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Hailong Li
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, China
| | - Linli Li
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Minghao Shao
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Hongli Wang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Jia Pei
- National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jialin Niu
- National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Guangyin Yuan
- National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Feizhou Lyu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, China
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Daavari M, Atapour M, Mohedano M, Matykina E, Arrabal R, Nesic D. Biological Performance of Duplex PEO + CNT/PCL Coating on AZ31B Mg Alloy for Orthopedic and Dental Applications. J Funct Biomater 2023; 14:475. [PMID: 37754889 PMCID: PMC10532417 DOI: 10.3390/jfb14090475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/11/2023] [Accepted: 09/14/2023] [Indexed: 09/28/2023] Open
Abstract
To regulate the degradation rate and improve the surface biocompatibility of the AZ31B magnesium alloy, three different coating systems were produced via plasma electrolytic oxidation (PEO): simple PEO, PEO incorporating multi-walled carbon nanotubes (PEO + CNT), and a duplex coating that included a polycaprolactone top layer (PEO + CNT/PCL). Surfaces were characterized by chemical content, roughness, topography, and wettability. Biological properties analysis included cell metabolism and adhesion. PEO ± CNT resulted in an augmented surface roughness compared with the base material (BM), while PCL deposition produced the smoothest surface. All surfaces had a contact angle below 90°. The exposure of gFib-TERT and bmMSC to culture media collected after 3 or 24 h did not affect their metabolism. A decrease in metabolic activity of 9% and 14% for bmMSC and of 14% and 29% for gFib-TERT was observed after 3 and 7 days, respectively. All cells died after 7 days of exposure to BM and after 15 days of exposure to coated surfaces. Saos-2 and gFib-TERT adhered poorly to BM, in contrast to bmMSC. All cells on PEO anchored into the pores with filopodia, exhibited tiny adhesion protrusions on PEO + CNT, and presented a web-like spreading with lamellipodia on PEO + CNT/PCL. The smooth and homogenous surface of the duplex PEO + CNT/PCL coating decreased magnesium corrosion and led to better biological functionality.
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Affiliation(s)
- Morteza Daavari
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;
| | - Masoud Atapour
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;
| | - Marta Mohedano
- Departamento de Ingeniería Química y de Materiales, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain; (M.M.); (E.M.); (R.A.)
| | - Endzhe Matykina
- Departamento de Ingeniería Química y de Materiales, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain; (M.M.); (E.M.); (R.A.)
| | - Raul Arrabal
- Departamento de Ingeniería Química y de Materiales, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain; (M.M.); (E.M.); (R.A.)
| | - Dobrila Nesic
- Division of Fixed Prosthodontics and Biomaterials, University Clinic of Dental Medicine, University of Geneva, Rue Michel-Servet 1, CH-1211 Geneva, Switzerland
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Li Q, Yang Q, Liu X, Liang W, Zhang X, Wang Y. Effect and mechanism of a novel Mg-Nd-Gd-Sr alloy on osteogenic differentiation of bone marrow mesenchymal stem cells. J Biomater Appl 2022; 37:829-837. [PMID: 35977627 DOI: 10.1177/08853282221121880] [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: 11/16/2022]
Abstract
We investigated the effect and mechanism of a novel Mg-3Nd-1Gd-0.3Sr-0.2Zn-0.4Zr (abbreviated to Mg-Nd-Gd-Sr) alloy on the osteogenic differentiation of bone marrow mesenchymal stem cells extracted from Sprague-Dawley rats. Cultured cells were divided into five groups: a control group cultured in osteogenic induction medium alone without Mg-Nd-Gd-Sr alloy extract, and four experimental groups cultured in the same medium with 25%, 50%, 75%, and 100% Mg-Nd-Gd-Sr alloy extracts, respectively. After 14 days of culture, ALP activity was determined and expressions of osteogenesis-related factors Runx2, OCN, and OPN at the mRNA level and Runx2, OCN, and OPN at the protein level were detected by RT-PCR and western blot, respectively. After 21 days of culture, mineralized nodules were detected by alizarin red staining. The results showed that bone marrow mesenchymal stem cells from Sprague-Dawley rats were successfully isolated in vitro using the whole bone marrow adherence method. Flow cytometry revealed that the cells expressed high levels of CD44 and CD90, but low levels of CD31 and CD45. Alizarin red staining indicated the formation of mineralized nodules in all five groups. Compared with the control group, the number of mineralized nodules was increased significantly in the four experimental groups (p < 0.05). The ALP activity in each group was significantly higher on day 14 than on day 7, and was significantly higher in the four experimental groups compared with the control group (p < 0.05). Moreover, the ALP activity was highest when the concentration of Mg-Nd-Gd-Sr alloy extract was 75% (p < 0.05). RT-PCR results showed that, compared with the control group, the mRNA expression of Runx2, OPN, and OCN was significantly higher in the four experimental groups (p < 0.05), and the highest mRNA expression of Runx2, OPN, and OCN was observed in the 75% experimental group (p < 0.05). Western blotting showed that Mg-Nd-Gd-Sr alloy extract significantly increased the protein expression of Runx2, OCN, and OPN compared with the control group (p < 0.05). Our data indicate that the novel Mg-Nd-Gd-Sr alloy can promotes the osteogenic differentiation of bone marrow mesenchymal stem cells isolated from Sprague-Dawley rats. During this process, there is an increase in the expressions of Runx2, OPN, and OCN mRNAs and Runx2, OCN, and OPN proteins.
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Affiliation(s)
- Qiangqiang Li
- Department of Orthopedics, 117741the First Hospital of Lanzhou University, Lanzhou, China
| | - Qinglin Yang
- Department of Orthopedics, 117741the First Hospital of Lanzhou University, Lanzhou, China
| | - Xiaorong Liu
- College of Clinical Medicine, 12426Northwest University for Nationalities, Lanzhou, China.,Department of Laboratory, the Second People's Hospital of Gansu Province, Lanzhou, China
| | - Wenqiang Liang
- Department of Orthopedics, 117741the First Hospital of Lanzhou University, Lanzhou, China
| | - Xiaobo Zhang
- School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing, China
| | - Yongping Wang
- Department of Orthopedics, 117741the First Hospital of Lanzhou University, Lanzhou, China
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Husak Y, Michalska J, Oleshko O, Korniienko V, Grundsteins K, Dryhval B, Altundal S, Mishchenko O, Viter R, Pogorielov M, Simka W. Bioactivity Performance of Pure Mg after Plasma Electrolytic Oxidation in Silicate-Based Solutions. Molecules 2021; 26:molecules26072094. [PMID: 33917454 PMCID: PMC8038674 DOI: 10.3390/molecules26072094] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/30/2021] [Accepted: 04/01/2021] [Indexed: 01/04/2023] Open
Abstract
The biodegradable metals, including magnesium (Mg), are a convenient alternative to permanent metals but fast uncontrolled corrosion limited wide clinical application. Formation of a barrier coating on Mg alloys could be a successful strategy for the production of a stable external layer that prevents fast corrosion. Our research was aimed to develop an Mg stable oxide coating using plasma electrolytic oxidation (PEO) in silicate-based solutions. 99.9% pure Mg alloy was anodized in electrolytes contained mixtures of sodium silicate and sodium fluoride, calcium hydroxide and sodium hydroxide. Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), contact angle (CA), Photoluminescence analysis and immersion tests were performed to assess structural and long-term corrosion properties of the new coating. Biocompatibility and antibacterial potential of the new coating were evaluated using U2OS cell culture and the gram-positive Staphylococcus aureus (S. aureus, strain B 918). PEO provided the formation of a porous oxide layer with relatively high roughness. It was shown that Ca(OH)2 was a crucial compound for oxidation and surface modification of Mg implants, treated with the PEO method. The addition of Ca2+ ions resulted in more intense oxidation of the Mg surface and growth of the oxide layer with a higher active surface area. Cell culture experiments demonstrated appropriate cell adhesion to all investigated coatings with a significantly better proliferation rate for the samples treated in Ca(OH)2-containing electrolyte. In contrast, NaOH-based electrolyte provided more relevant antibacterial effects but did not support cell proliferation. In conclusion, it should be noted that PEO of Mg alloy in silicate baths containing Ca(OH)2 provided the formation of stable biocompatible oxide coatings that could be used in the development of commercial degradable implants.
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Affiliation(s)
- Yevheniia Husak
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (Y.H.); (O.O.); (V.K.); (B.D.)
| | - Joanna Michalska
- Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland;
| | - Oleksandr Oleshko
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (Y.H.); (O.O.); (V.K.); (B.D.)
| | - Viktoriia Korniienko
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (Y.H.); (O.O.); (V.K.); (B.D.)
| | - Karlis Grundsteins
- Institute of Atomic Physics and Spectroscopy, University of Latvia, LV-1586 Riga, Latvia; (K.G.); (S.A.)
| | - Bohdan Dryhval
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (Y.H.); (O.O.); (V.K.); (B.D.)
| | - Sahin Altundal
- Institute of Atomic Physics and Spectroscopy, University of Latvia, LV-1586 Riga, Latvia; (K.G.); (S.A.)
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, LV-1048 Riga, Latvia
| | - Oleg Mishchenko
- NanoPrime, 39-200 Dębica, Poland;
- Zaporizhzhia State Medical University, 26 Prosp. Mayakovskogo, 69035 Zaporizhzhia, Ukraine
| | - Roman Viter
- Institute of Atomic Physics and Spectroscopy, University of Latvia, LV-1586 Riga, Latvia; (K.G.); (S.A.)
- Correspondence: (R.V.); (M.P.); (W.S.)
| | - Maksym Pogorielov
- Medical Institute, Sumy State University, 40018 Sumy, Ukraine; (Y.H.); (O.O.); (V.K.); (B.D.)
- NanoPrime, 39-200 Dębica, Poland;
- Correspondence: (R.V.); (M.P.); (W.S.)
| | - Wojciech Simka
- Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland;
- Correspondence: (R.V.); (M.P.); (W.S.)
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Wang Y, Zhu Z, Xu X, He Y, Zhang B. Improved corrosion resistance and biocompatibility of a calcium phosphate coating on a magnesium alloy for orthopedic applications. EUR J INFLAMM 2016. [DOI: 10.1177/1721727x16677763] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this study a calcium phosphate (Ca–P) coating was fabricated on the surface of an AZ31 alloy by a chemical deposition process, and the in vitro and in vivo studies were carried out on a Ca–P-coated and uncoated AZ31 alloy to determine the effect of Ca–P coating on the corrosion behavior and biocompatibility of the AZ31 alloy. The morphology and composition of the Ca–P coating were characterized by scanning electron microscopy and energy dispersive spectroscopy. The corrosion behavior of the Ca-P coating was evaluated by a static immersion test and the effects of the Ca–P coating on biocompatibility were also investigated by in vitro cell experiments and in vivo animal experiments. The results indicated that the Ca–P coating reduced the in vitro and in vivo corrosion rates of the AZ31 alloy. Cell experiments showed significantly good adherence and high proliferation on the Ca–P-coated AZ31 alloy than those on the uncoated AZ31 alloy ( P < 0.05). The blood cell aggregation tests showed that the Ca–P-coated AZ31 alloy had decreased the blood cell aggregation compared to the uncoated AZ31 alloy. The animal experiments showed that the uncoated AZ31 alloy degraded more rapidly than the Ca–P-coated AZ31 alloy and the Ca–P coating provided significantly good biocompatibility, thus suggesting that the Ca–P coating not only slowed down the corrosion rate of the AZ31 alloy, but also improved its biocompatibility. Therefore, the Ca–P-coated AZ31 alloy can be considered as a promising biomaterial for orthopedic applications.
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Affiliation(s)
- Yongping Wang
- Department of Orthopedics, Shanghai Jiao Tong University Medical School Affiliated Ruijin Hospital, Shanghai, China
- Department of Orthopaedics, First Hospital of Lanzhou University, Lanzhou, China
| | - Zhaojin Zhu
- Department of Orthopedics, Shanghai Jiao Tong University Medical School Affiliated Ruijin Hospital, Shanghai, China
| | - Xiangyang Xu
- Department of Orthopedics, Shanghai Jiao Tong University Medical School Affiliated Ruijin Hospital, Shanghai, China
| | - Yaohua He
- Department of Orthopaedics, Sixth People’s Hospital of Shanghai JiaoTong University, Shanghai, China
| | - Bingchun Zhang
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
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