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Kim Y, Hamada K, Sekine K. The effect of supplementing the calcium phosphate cement containing poloxamer 407 on cellular activities. J Biomed Mater Res B Appl Biomater 2024; 112:e35335. [PMID: 37772460 DOI: 10.1002/jbm.b.35335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 09/12/2023] [Accepted: 09/18/2023] [Indexed: 09/30/2023]
Abstract
Calcium phosphate cement (CPC) is generally used for bone repair and augmentation. Poloxamers are tri-block copolymers that are used as surfactants but have applications in drug and antibiotic delivery. However, their biological effects on bone regeneration systems remain unelucidated. Here, we aimed to understand how supplementing the prototype CPC with poloxamer would impact cellular activity and its function as a bone-grafting material. A novel CPC, modified beta-tricalcium phosphate (mβ-TCP) powder, was developed through a planetary ball-milling process using a beta-tricalcium phosphate (β-TCP). The mβ-TCP dissolves rapidly and accelerates hydroxyapatite precipitation; successfully shortening the cement setting time and enhancing the strength. Furthermore, the addition of poloxamer 407 to mβ-TCP could reduce the risk of leakage from bone defects and improve fracture toughness while maintaining mechanical properties. In this study, the poloxamer addition effects (0.05 and 0.1 g/mL) on the cellular activities of MC3T3-E1 cells cultured in vitro were investigated. The cell viability of mβ-TCP containing poloxamer 407 was similar to that of mβ-TCP. All specimens showed effective cell attachment and healthy polygonal extension of the cytoplasm firmly attached to hydroxyapatite (HA) crystals. Therefore, even with the addition of poloxamer to mβ-TCP, it does not have a negative effect to osteoblast growth. These data demonstrated that the addition of poloxamer 407 to mβ-TCP might be considered a potential therapeutic application for the repair and regeneration of bone defects.
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Affiliation(s)
- Yeeun Kim
- Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Kenichi Hamada
- Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Kazumitsu Sekine
- Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
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Córdova-Aquino J, Medellín-Castillo HI. Assessment of the elastic stiffness of human cardiac fibres after an apical infarction using finite element simulation. Proc Inst Mech Eng H 2023; 237:1261-1274. [PMID: 37865815 DOI: 10.1177/09544119231204184] [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: 10/23/2023]
Abstract
Several research works in the literature have focused on understanding the post-infarction ventricular remodelling phenomenon, but few works have considered the evaluation of the elastic behaviour of the cardiac tissue after a myocardial infarction. This paper presents an investigation focused on predicting the elastic performance of the human heart after a left ventricular apical infarction. The aim is to understand the elastic alterations of the cardiac fibres at different periods after an apical infarct. For this purpose, a hybrid method based on pressure and volume measurements of the left ventricle (LV) at different periods of ventricular remodelling, and the Finite Element Method (FEM), is developed. In addition, several performance indexes are defined to evaluate the heart performance during the ventricular remodelling process. The results show that during the first 2 weeks after a heart infarction, the cardiac fibres must support a much higher structural overload than during normal conditions. This structural overload is proportional to the aneurysm size but diminishes with the time, together with a significant reduction of the ventricular pumping capacity.
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Lu T, Wang J, Yuan X, Tang C, Wang X, He F, Ye J. Zinc-doped calcium silicate additive accelerates early angiogenesis and bone regeneration of calcium phosphate cement by double bioactive ions stimulation and immunoregulation. BIOMATERIALS ADVANCES 2022; 141:213120. [PMID: 36122428 DOI: 10.1016/j.bioadv.2022.213120] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/03/2022] [Accepted: 09/12/2022] [Indexed: 06/15/2023]
Abstract
Calcium phosphate cement (CPC), a popular injectable bone defect repairing material, has deficiencies in stimulating osteogenesis and angiogenesis. To overcome the weaknesses of CPC, zinc-doped calcium silicate (Zn-CS) which can release bioactive silicon (Si) and zinc (Zn) ions was introduced to CPC. The physicochemical and biological properties of CPC and its composites were evaluated. Firstly, the most effective addition content of calcium silicate (CaSiO3, CS) in promoting the in vitro osteogenesis was first sorted out. On this basis, the most effective Zn doping content in CS for improving osteogenic differentiation of CPC-based composites was screened out. Finally, the immunoregulation of CS/CPC and Zn-CS/CPC in promoting angiogenesis and osteogenesis was studied. The results showed that the most effective incorporation content of CS was 10 wt%. Zn at a doping content of 30 mol% in CS (30Zn-CS) further enhanced the osteogenic capacity of CS/CPC and simultaneously maintained excellent proangiogenic activity. CS/CPC and 30Zn-CS/CPC promoted the recruitment of macrophages and enhanced M2 polarization while inhibiting M1 polarization, which was beneficial to the early vascularization as well as subsequent new bone formation. When implanted into the femoral condylar defects of rabbits, 30Zn-CS/CPC showed high in vivo materials degradation rate, angiogenesis and osteogenesis, due to the synergistic effects of Si and Zn on bio-stimulation and immunoregulation. This study shed light on the synergistic effects of Si and Zn on regulating the angiogenic, osteogenic, and immunoregulatory activity, and 30Zn-CS/CPC is expected to repair the lacunar bone defects effectively.
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Affiliation(s)
- Teliang Lu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, PR China
| | - Jinchao Wang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, PR China
| | - Xinyuan Yuan
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, PR China
| | - Chenyu Tang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, PR China
| | - Xiaolan Wang
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, PR China
| | - Fupo He
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Jiandong Ye
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, PR China; Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou 510641, PR China.
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Bioactive Calcium Phosphate-Based Composites for Bone Regeneration. JOURNAL OF COMPOSITES SCIENCE 2021. [DOI: 10.3390/jcs5090227] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Calcium phosphates (CaPs) are widely accepted biomaterials able to promote the regeneration of bone tissue. However, the regeneration of critical-sized bone defects has been considered challenging, and the development of bioceramics exhibiting enhanced bioactivity, bioresorbability and mechanical performance is highly demanded. In this respect, the tuning of their chemical composition, crystal size and morphology have been the matter of intense research in the last decades, including the preparation of composites. The development of effective bioceramic composite scaffolds relies on effective manufacturing techniques able to control the final multi-scale porosity of the devices, relevant to ensure osteointegration and bio-competent mechanical performance. In this context, the present work provides an overview about the reported strategies to develop and optimize bioceramics, while also highlighting future perspectives in the development of bioactive ceramic composites for bone tissue regeneration.
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Calcium Phosphate Cement Plus 10% Wollastonite Whiskers: An <i>In Vivo </i>Study. JOURNAL OF BIOMIMETICS BIOMATERIALS AND BIOMEDICAL ENGINEERING 2020. [DOI: 10.4028/www.scientific.net/jbbbe.47.117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biomaterials can be used in several areas of regenerative bioengineering, and is a viable option in the repair of bone injuries. A number of different types of biomaterials have been studied in relation to bone repair. Ceramics such as α-TCP have low fracture toughness compared to natural bone, so reinforcements such as wollastonite whiskers are developed so that they can be used in places with greater overload. This study aimed to evaluate the biocompatibility and bone neoformation of α-TCP plus 10% wollastonite whiskers, in vivo. To obtain the cement, α-TCP powders with or without 10% wollastonite whiskers were added to an aqueous solution containing 2.5% by weight of Na2HPO4 (anhydrous bibasic sodium phosphate). The biomaterial then became a paste, which was molded into the critical 5 mm defect made in the parietal bone of Wistar rats. Ten rats were divided into two groups. The animals from each group were euthanized within 30 days. Calvaries were removed and subjected to histological processing with Eosin and Hematoxylin. The implementation of the whisker biomaterial revealed the formation of intensely vascularized connective tissue in the implemented region; however, animals with the biomaterial α-TCP showed the formation of this tissue around the implemented region. On the other hand, intense bone resorption was observed only in the animals with Wollastonite Whiskers, but new bone formation in both groups. The biomaterial evaluated was shown to be non-cytotoxic, resorbable, and capable of inducing bone neoformation; however, more studies should be carried out to assess the application of this biomaterial in bone injuries.
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Apanasevich V, Papynov E, Plekhova N, Zinoviev S, Kotciurbii E, Stepanyugina A, Korshunova O, Afonin I, Evdokimov I, Shichalin O, Bardin A, Nevozhai V, Polezhaev A. Morphological Characteristics of the Osteoplastic Potential of Synthetic CaSiO 3/HAp Powder Biocomposite. J Funct Biomater 2020; 11:jfb11040068. [PMID: 32977458 PMCID: PMC7712391 DOI: 10.3390/jfb11040068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/17/2020] [Accepted: 09/20/2020] [Indexed: 02/06/2023] Open
Abstract
The study describes the influence of synthetic CaSiO3/HAp powder biocomposite on the process of regeneration in osseous tissue in the alveolar ridges in terms of the morphological characteristics of the osteoplastic potential. The authors investigated the osteoinduction and osteoconduction “in vivo” processes during bone tissue regeneration in the mandible defect area of an experimental animal (rabbit). The possibility of angiogenesis in the graft as an adaptation factor was studied in the process of bone tissue regeneration. The results of the histological study that included the qualitative parameters of bone tissue regeneration, the morphometric parameters (microarchitectonics) of the bone, the parameters of osteosynthesis (thickness of the osteoid plates), and resorption (volume density of the eroded surface) were presented. The results allowed the authors to characterize the possibility of the practical adaptation for synthetic powder biocomposite as an osteoplastic graft for the rehabilitation of osseous defects in dentistry.
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Affiliation(s)
- Vladimir Apanasevich
- Central Research Laboratory, Institute of Surgery, Pacific State Medical University, 2, Ostryakov Aven., Vladivostok 690990, Russia; (V.A.); (N.P.); (S.Z.); (E.K.); (A.S.); (O.K.); (I.A.); (A.B.); (V.N.); (A.P.)
| | - Evgeniy Papynov
- Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, 159, Prosp. 100-letiya Vladivostoka, Vladivostok 690022, Russia;
- Far Eastern Federal University, 8, Sukhanova St., Vladivostok 690091, Russia;
- Correspondence:
| | - Nataliay Plekhova
- Central Research Laboratory, Institute of Surgery, Pacific State Medical University, 2, Ostryakov Aven., Vladivostok 690990, Russia; (V.A.); (N.P.); (S.Z.); (E.K.); (A.S.); (O.K.); (I.A.); (A.B.); (V.N.); (A.P.)
| | - Sergey Zinoviev
- Central Research Laboratory, Institute of Surgery, Pacific State Medical University, 2, Ostryakov Aven., Vladivostok 690990, Russia; (V.A.); (N.P.); (S.Z.); (E.K.); (A.S.); (O.K.); (I.A.); (A.B.); (V.N.); (A.P.)
| | - Evgeniy Kotciurbii
- Central Research Laboratory, Institute of Surgery, Pacific State Medical University, 2, Ostryakov Aven., Vladivostok 690990, Russia; (V.A.); (N.P.); (S.Z.); (E.K.); (A.S.); (O.K.); (I.A.); (A.B.); (V.N.); (A.P.)
| | - Alexandra Stepanyugina
- Central Research Laboratory, Institute of Surgery, Pacific State Medical University, 2, Ostryakov Aven., Vladivostok 690990, Russia; (V.A.); (N.P.); (S.Z.); (E.K.); (A.S.); (O.K.); (I.A.); (A.B.); (V.N.); (A.P.)
| | - Oksana Korshunova
- Central Research Laboratory, Institute of Surgery, Pacific State Medical University, 2, Ostryakov Aven., Vladivostok 690990, Russia; (V.A.); (N.P.); (S.Z.); (E.K.); (A.S.); (O.K.); (I.A.); (A.B.); (V.N.); (A.P.)
| | - Igor Afonin
- Central Research Laboratory, Institute of Surgery, Pacific State Medical University, 2, Ostryakov Aven., Vladivostok 690990, Russia; (V.A.); (N.P.); (S.Z.); (E.K.); (A.S.); (O.K.); (I.A.); (A.B.); (V.N.); (A.P.)
| | - Ivan Evdokimov
- Far Eastern Federal University, 8, Sukhanova St., Vladivostok 690091, Russia;
| | - Oleg Shichalin
- Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, 159, Prosp. 100-letiya Vladivostoka, Vladivostok 690022, Russia;
- Far Eastern Federal University, 8, Sukhanova St., Vladivostok 690091, Russia;
| | - Artem Bardin
- Central Research Laboratory, Institute of Surgery, Pacific State Medical University, 2, Ostryakov Aven., Vladivostok 690990, Russia; (V.A.); (N.P.); (S.Z.); (E.K.); (A.S.); (O.K.); (I.A.); (A.B.); (V.N.); (A.P.)
| | - Vladimir Nevozhai
- Central Research Laboratory, Institute of Surgery, Pacific State Medical University, 2, Ostryakov Aven., Vladivostok 690990, Russia; (V.A.); (N.P.); (S.Z.); (E.K.); (A.S.); (O.K.); (I.A.); (A.B.); (V.N.); (A.P.)
| | - Alexandr Polezhaev
- Central Research Laboratory, Institute of Surgery, Pacific State Medical University, 2, Ostryakov Aven., Vladivostok 690990, Russia; (V.A.); (N.P.); (S.Z.); (E.K.); (A.S.); (O.K.); (I.A.); (A.B.); (V.N.); (A.P.)
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