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Novotná R, Franková J. Materials Suitable for Osteochondral Regeneration. ACS OMEGA 2024; 9:30097-30108. [PMID: 39035913 PMCID: PMC11256084 DOI: 10.1021/acsomega.4c04789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 06/19/2024] [Accepted: 06/25/2024] [Indexed: 07/23/2024]
Abstract
Osteochondral defects affect articular cartilage, calcified cartilage, and subchondral bone. The main problem that they cause is a different behavior of cell tissue in the osteochondral and bone part. Articular cartilage is composed mainly of collagen II, glycosaminoglycan (GAG), and water, and has a low healing ability due to a lack of vascularization. However, bone tissue is composed of collagen I, proteoglycans, and inorganic composites such as hydroxyapatite. Due to the discrepancy between the characters of these two parts, it is difficult to find materials that will meet all the structural and other requirements for effective regeneration. When designing a scaffold for an osteochondral defect, a variety of materials are available, e.g., polymers (synthetic and natural), inorganic particles, and extracellular matrix (ECM) components. All of them require the accurate characterization of the prepared materials and a number of in vitro and in vivo tests before they are applied to patients. Taken in concert, the final material needs to mimic the structural, morphological, chemical, and cellular demands of the native tissue. In this review, we present an overview of the structure and composition of the osteochondral part, especially synthetic materials with additives appropriate for healing osteochondral defects. Finally, we summarize in vitro and in vivo methods suitable for evaluating materials for restoring osteochondral defects.
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Affiliation(s)
- Renáta Novotná
- Department
of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, Olomouc 775 15, Czech Republic
| | - Jana Franková
- Department
of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, Olomouc 775 15, Czech Republic
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2
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Yang Y, Yang Y, Hou Z, Wang T, Wu P, Shen L, Li P, Zhang K, Yang L, Sun S. Comprehensive review of materials, applications, and future innovations in biodegradable esophageal stents. Front Bioeng Biotechnol 2023; 11:1327517. [PMID: 38125305 PMCID: PMC10731276 DOI: 10.3389/fbioe.2023.1327517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023] Open
Abstract
Esophageal stricture (ES) results from benign and malignant conditions, such as uncontrolled gastroesophageal reflux disease (GERD) and esophageal neoplasms. Upper gastrointestinal endoscopy is the preferred diagnostic approach for ES and its underlying causes. Stent insertion using an endoscope is a prevalent method for alleviating or treating ES. Nevertheless, the widely used self-expandable metal stents (SEMS) and self-expandable plastic stents (SEPS) can result in complications such as migration and restenosis. Furthermore, they necessitate secondary extraction in cases of benign esophageal stricture (BES), rendering them unsatisfactory for clinical requirements. Over the past 3 decades, significant attention has been devoted to biodegradable materials, including synthetic polyester polymers and magnesium-based alloys, owing to their exceptional biocompatibility and biodegradability while addressing the challenges associated with recurring procedures after BES resolves. Novel esophageal stents have been developed and are undergoing experimental and clinical trials. Drug-eluting stents (DES) with drug-loading and drug-releasing capabilities are currently a research focal point, offering more efficient and precise ES treatments. Functional innovations have been investigated to optimize stent performance, including unidirectional drug-release and anti-migration features. Emerging manufacturing technologies such as three-dimensional (3D) printing and new biodegradable materials such as hydrogels have also contributed to the innovation of esophageal stents. The ultimate objective of the research and development of these materials is their clinical application in the treatment of ES and other benign conditions and the palliative treatment of malignant esophageal stricture (MES). This review aimed to offer a comprehensive overview of current biodegradable esophageal stent materials and their applications, highlight current research limitations and innovations, and offer insights into future development priorities and directions.
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Affiliation(s)
- Yaochen Yang
- Department of Gastroenterology, Endoscopic Center, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang, China
- Research Center for Biomedical Materials, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yuanyuan Yang
- Department of Gastroenterology, Endoscopic Center, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang, China
| | - Zhipeng Hou
- Research Center for Biomedical Materials, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tingting Wang
- Department of Gastroenterology, Endoscopic Center, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang, China
| | - Peng Wu
- Department of Gastroenterology, Endoscopic Center, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang, China
| | - Lufan Shen
- Department of Gastroenterology, Endoscopic Center, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang, China
| | - Peng Li
- Liaoning Research Institute for Eugenic Birth and Fertility, China Medical University, Shenyang, China
| | - Kai Zhang
- Department of Gastroenterology, Endoscopic Center, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang, China
| | - Liqun Yang
- Research Center for Biomedical Materials, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Research Institute for Eugenic Birth and Fertility, China Medical University, Shenyang, China
| | - Siyu Sun
- Department of Gastroenterology, Endoscopic Center, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang, China
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Li W, Lin M, Wang C, Lu Y, Sui Y, Ni X, Guo J, Jiang M, Yang L, Cui H. In vitro enzymatic degradation of the PTMC/cross-linked PEGDA blends. Front Bioeng Biotechnol 2023; 11:1253221. [PMID: 37736328 PMCID: PMC10509478 DOI: 10.3389/fbioe.2023.1253221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/22/2023] [Indexed: 09/23/2023] Open
Abstract
Introduction: Poly(1,3-trimethylene carbonate) (PTMC) is a flexible amorphous polymer with good degradability and biocompatibility. The degradation of PTMC is critical for its application as a degradable polymer, more convenient and easy-to-control cross-linking strategies for preparing PTMC are required. Methods: The blends of poly(trimethylene carbonate) (PTMC) and cross-linked poly(ethylene glycol) diacrylate (PEGDA) were prepared by mixing photoactive PEGDA and PTMC and subsequently photopolymerizing the mixture with uv light. The physical properties and in vitro enzymatic degradation of the resultant PTMC/cross-linked PEGDA blends were investigated. Results: The results showed that the gel fraction of PTMC/cross-linked PEGDA blends increased while the swelling degree decreased with the content of PEGDA dosage. The results of in vitro enzymatic degradation confirmed that the degradation of PTMC/cross-linked PEGDA blends in the lipase solution occurred under the surface erosion mechanism, and the introduction of the uv cross-linked PEGDA significantly improved the resistance to lipase erosion of PTMC; the higher the cross-linking degree, the lower the mass loss. Discussion: The results indicated that the blends/cross-linking via PEGDA is a simple and effective strategy to tailor the degradation rate of PTMC.
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Affiliation(s)
- Wei Li
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Meina Lin
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Chenchao Wang
- Department of Plastic Surgery, First Hospital of China Medical University, Shenyang, China
| | - Yongping Lu
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Yu Sui
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Xiang Ni
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Jing Guo
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Miao Jiang
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Liqun Yang
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Hong Cui
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
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Govindaraju DT, Chen CH, Shalumon KT, Kao HH, Chen JP. Bioactive Nanostructured Scaffold-Based Approach for Tendon and Ligament Tissue Engineering. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1847. [PMID: 37368277 DOI: 10.3390/nano13121847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/05/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023]
Abstract
An effective therapeutic strategy to treat tendon or ligament injury continues to be a clinical challenge due to the limited natural healing capacity of these tissues. Furthermore, the repaired tendons or ligaments usually possess inferior mechanical properties and impaired functions. Tissue engineering can restore the physiological functions of tissues using biomaterials, cells, and suitable biochemical signals. It has produced encouraging clinical outcomes, forming tendon or ligament-like tissues with similar compositional, structural, and functional attributes to the native tissues. This paper starts by reviewing tendon/ligament structure and healing mechanisms, followed by describing the bioactive nanostructured scaffolds used in tendon and ligament tissue engineering, with emphasis on electrospun fibrous scaffolds. The natural and synthetic polymers for scaffold preparation, as well as the biological and physical cues offered by incorporating growth factors in the scaffolds or by dynamic cyclic stretching of the scaffolds, are also covered. It is expected to present a comprehensive clinical, biological, and biomaterial insight into advanced tissue engineering-based therapeutics for tendon and ligament repair.
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Affiliation(s)
- Darshan Tagadur Govindaraju
- Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan City 33302, Taiwan
| | - Chih-Hao Chen
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital at Keelung, Chang Gung University College of Medicine, Anle, Keelung 20401, Taiwan
- Craniofacial Research Center, Chang Gung Memorial Hospital at Linkou, Kwei-San, Taoyuan City 33305, Taiwan
| | - K T Shalumon
- Department of Chemistry, Sacred Heart College, Mahatma Gandhi University, Kochi 682013, India
| | - Hao-Hsi Kao
- Division of Nephrology, Chang Gung Memorial Hospital at Keelung, Chang Gung University College of Medicine, Anle, Keelung 20401, Taiwan
| | - Jyh-Ping Chen
- Department of Chemical and Materials Engineering, Chang Gung University, Kwei-San, Taoyuan City 33302, Taiwan
- Craniofacial Research Center, Chang Gung Memorial Hospital at Linkou, Kwei-San, Taoyuan City 33305, Taiwan
- Department of Neurosurgery, Chang Gung Memorial Hospital at Linkou, Kwei-San, Taoyuan City 33305, Taiwan
- Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Kwei-San, Taoyuan City 33305, Taiwan
- Department of Materials Engineering, Ming Chi University of Technology, Tai-Shan, New Taipei City 24301, Taiwan
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Zhang J, Zhang X, Li W, Guo J, Yang L, Yan G. Poly (trimethylene carbonate)/doxycycline hydrochloride films in the treatment of Achilles tendon defect in rats. Front Bioeng Biotechnol 2023; 11:1135248. [PMID: 36911187 PMCID: PMC9999008 DOI: 10.3389/fbioe.2023.1135248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 02/16/2023] [Indexed: 03/14/2023] Open
Abstract
Introduction: In this study, Poly (trimethylene carbonate)/Doxycycline hydrochloride (PTMC/DH) films were introduced to repair the Achilles tendon defects for the first time. Methods: (PTMC/DH) films with different DH content of 10, 20, and 30% (w/w) were prepared by solvent casting. The in vitro and in vivo drug release of the prepared PTMC/DH films was investigated. Results: The results of drug release experiments showed that the PTMC/DH films released effective concentrations of doxycycline for more than 7 and 28 days in vitro and in vivo, respectively. The results of antibacterial activity experiments showed diameters of 25.00 ± 1.00 mm, 29.33 ± 1.15 mm, and 34.67 ± 1.53 mm, respectively, for the inhibition zones produced by the release solutions of PTMC/DH films with 10, 20 and 30% (w/w) DH at 2 h, indicating that the drug-loaded films could inhibit Staphylococcus aureus well. After treatment, the Achilles tendon defects have recovered well, as indicated by the more robust biomechanical properties and the lower fibroblast density of the repaired Achilles tendons. Pathology revealed that the pro-inflammatory cytokine, IL-1β, and the anti-inflammatory factor, TGF-β1, peaked in the first three days and gradually decreased as the drug was released more slowly. Discussion: These results demonstrated that the PTMC/DH films have great potential for regenerating Achilles tendon defects.
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Affiliation(s)
- Jinchi Zhang
- Department of Biomaterials, Shengjing Hospital of China Medical University, Shenyang, China.,NHC Key Laboratory of Reproductive Health and Medical Genetics (China Medical University), Liaoning Research Institute of Family Planning (The Affiliated Reproductive Hospital of China Medical University), Shenyang, China.,College of Kinesiology, Shenyang Sport University, Shenyang, China
| | - Xiaowei Zhang
- NHC Key Laboratory of Reproductive Health and Medical Genetics (China Medical University), Liaoning Research Institute of Family Planning (The Affiliated Reproductive Hospital of China Medical University), Shenyang, China
| | - Wei Li
- College of Kinesiology, Shenyang Sport University, Shenyang, China
| | - Jing Guo
- NHC Key Laboratory of Reproductive Health and Medical Genetics (China Medical University), Liaoning Research Institute of Family Planning (The Affiliated Reproductive Hospital of China Medical University), Shenyang, China
| | - Liqun Yang
- Department of Biomaterials, Shengjing Hospital of China Medical University, Shenyang, China.,NHC Key Laboratory of Reproductive Health and Medical Genetics (China Medical University), Liaoning Research Institute of Family Planning (The Affiliated Reproductive Hospital of China Medical University), Shenyang, China
| | - Guangqi Yan
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, Shenyang, China
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Naghdi M, Ghovvati M, Rabiee N, Ahmadi S, Abbariki N, Sojdeh S, Ojaghi A, Bagherzadeh M, Akhavan O, Sharifi E, Rabiee M, Saeb MR, Bolouri K, Webster TJ, Zare EN, Zarrabi A. Magnetic nanocomposites for biomedical applications. Adv Colloid Interface Sci 2022; 308:102771. [PMID: 36113311 DOI: 10.1016/j.cis.2022.102771] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 07/19/2022] [Accepted: 08/31/2022] [Indexed: 11/28/2022]
Abstract
Tissue engineering and regenerative medicine have solved numerous problems related to the repair and regeneration of damaged organs and tissues arising from aging, illnesses, and injuries. Nanotechnology has further aided tissue regeneration science and has provided outstanding opportunities to help disease diagnosis as well as treat damaged tissues. Based on the most recent findings, magnetic nanostructures (MNSs), in particular, have emerged as promising materials for detecting, directing, and supporting tissue regeneration. There have been many reports concerning the role of these nano-building blocks in the regeneration of both soft and hard tissues, but the subject has not been extensively reviewed. Here, we review, classify, and discuss various synthesis strategies for novel MNSs used in medicine. Advanced applications of magnetic nanocomposites (MG-NCs), specifically magnetic nanostructures, are further systematically reviewed. In addition, the scientific and technical aspects of MG-NC used in medicine are discussed considering the requirements for the field. In summary, this review highlights the numerous opportunities and challenges associated with the use of MG-NCs as smart nanocomposites (NCs) in tissue engineering and regenerative medicine.
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Affiliation(s)
- Mina Naghdi
- Department of Chemistry, Isfahan University of Technology, 84156-83111 Isfahan, Iran
| | - Mahsa Ghovvati
- Department of Radiological Sciences, David Geffen School of Medicine, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Navid Rabiee
- School of Engineering, Macquarie University, Sydney, New South Wales 2109, Australia; Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran, Iran; Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea.
| | - Sepideh Ahmadi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran 19857-17443, Iran; Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran 19857-17443, Iran
| | - Nikzad Abbariki
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | - Soheil Sojdeh
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | | | | | - Omid Akhavan
- Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran, Iran
| | - Esmaeel Sharifi
- Institute for Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Naples 80125, Italy
| | - Mohammad Rabiee
- Biomaterial Group, Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Mohammad Reza Saeb
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Keivan Bolouri
- Department of Radiological Sciences, David Geffen School of Medicine, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Thomas J Webster
- School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, China
| | | | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Istanbul 34396, Turkey
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Zhu S, He Z, Ji L, Zhang W, Tong Y, Luo J, Zhang Y, Li Y, Meng X, Bi Q. Advanced Nanofiber-Based Scaffolds for Achilles Tendon Regenerative Engineering. Front Bioeng Biotechnol 2022; 10:897010. [PMID: 35845401 PMCID: PMC9280267 DOI: 10.3389/fbioe.2022.897010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/20/2022] [Indexed: 11/22/2022] Open
Abstract
The Achilles tendon (AT) is responsible for running, jumping, and standing. The AT injuries are very common in the population. In the adult population (21–60 years), the incidence of AT injuries is approximately 2.35 per 1,000 people. It negatively impacts people’s quality of life and increases the medical burden. Due to its low cellularity and vascular deficiency, AT has a poor healing ability. Therefore, AT injury healing has attracted a lot of attention from researchers. Current AT injury treatment options cannot effectively restore the mechanical structure and function of AT, which promotes the development of AT regenerative tissue engineering. Various nanofiber-based scaffolds are currently being explored due to their structural similarity to natural tendon and their ability to promote tissue regeneration. This review discusses current methods of AT regeneration, recent advances in the fabrication and enhancement of nanofiber-based scaffolds, and the development and use of multiscale nanofiber-based scaffolds for AT regeneration.
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Affiliation(s)
- Senbo Zhu
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zeju He
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lichen Ji
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wei Zhang
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Yu Tong
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Junchao Luo
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yin Zhang
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Yong Li
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Xiang Meng
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Qing Bi
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
- *Correspondence: Qing Bi,
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Luzak B, Siarkiewicz P, Boncler M. An evaluation of a new high-sensitivity PrestoBlue assay for measuring cell viability and drug cytotoxicity using EA.hy926 endothelial cells. Toxicol In Vitro 2022; 83:105407. [PMID: 35659575 DOI: 10.1016/j.tiv.2022.105407] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/29/2022] [Accepted: 05/29/2022] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Commercially-available resazurin-based reagents used for cell viability assessment contain varying amounts of resorufin; these may contribute to differences in autofluorescence, signal-to-background (S/B) ratio and the dynamic range of the assay. OBJECTIVES This in vitro study compares the sensitivity of a new, high-sensitivity PrestoBlue (hs-PB) assay with standard PrestoBlue (PB) in assessing the efficacy of valinomycin and antimycin A in human vascular endothelial EA.hy926 cells, as well as cell viability. METHODS The metabolic activity of EA.hy926 was evaluated based on resorufin fluorescence or formazan absorbance. RESULTS The hs-PB assay demonstrated lower resorufin autofluorescence than the PB, resulting in a ≥ 1.4-fold increase in S/B ratio in hs-PB compared to PB. Valinomycin was more potent cytotoxic agent than antimycin A. The hs-PB, PB and MTT produced similar IC50 values for valinomycin. Antimycin A demonstrated significantly higher potency in the MTT than in the resazurin-based assays. The EA.hy926 cells demonstrated higher metabolic activity in the presence of the antimycin A solvent - DMSO. CONCLUSION All the examined methods may be used interchangeably to analyze drug cytotoxicity. Any differences in drug cytotoxicity observed between the assays may be due to relatively low drug potency and/or the influence of solvent on metabolism of assay reagent. The hs-PB assay appears to more effectively detect cell viability and produce a stronger signal than its conventional counterpart.
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Affiliation(s)
- Boguslawa Luzak
- Department of Haemostasis and Haemostatic Disorders, Medical University of Lodz, Lodz, Poland
| | - Przemysław Siarkiewicz
- Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Lodz, Poland
| | - Magdalena Boncler
- Department of Haemostasis and Haemostatic Disorders, Medical University of Lodz, Lodz, Poland.
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Preparation and optimization of polyurethane/crosslinked poly acrylic acid semi-IPNs containing multi wall carbon nanotube applicable for artificial tendon. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128415] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Li C, Zhang M, Liu SY, Zhang FS, Wan T, Ding ZT, Zhang PX. Chitin Nerve Conduits with Three-Dimensional Spheroids of Mesenchymal Stem Cells from SD Rats Promote Peripheral Nerve Regeneration. Polymers (Basel) 2021; 13:polym13223957. [PMID: 34833256 PMCID: PMC8620585 DOI: 10.3390/polym13223957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 12/17/2022] Open
Abstract
Peripheral nerve injury (PNI) is an unresolved medical problem with limited therapeutic effects. Epineurium neurorrhaphy is an important method for treating PNI in clinical application, but it is accompanied by inevitable complications such as the misconnection of nerve fibers and neuroma formation. Conduits small gap tubulization has been proved to be an effective suture method to replace the epineurium neurorrhaphy. In this study, we demonstrated a method for constructing peripheral nerve conduits based on the principle of chitosan acetylation. In addition, the micromorphology, mechanical properties and biocompatibility of the chitin nerve conduits formed by chitosan acetylation were further tested. The results showed chitin was a high-quality biological material for constructing nerve conduits. Previous reports have demonstrated that mesenchymal stem cells culture as spheroids can improve the therapeutic potential. In the present study, we used a hanging drop protocol to prepare bone marrow mesenchymal stem cell (BMSCs) spheroids. Meanwhile, spherical stem cells could express higher stemness-related genes. In the PNI rat model with small gap tubulization, BMSCs spheres exhibited a higher ability to improve sciatic nerve regeneration than BMSCs suspension. Chitin nerve conduits with BMSCs spheroids provide a promising therapy option for peripheral nerve regeneration.
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Affiliation(s)
- Ci Li
- Department of Orthopedics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (C.L.); (M.Z.); (S.-Y.L.); (F.-S.Z.); (T.W.); (Z.-T.D.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
| | - Meng Zhang
- Department of Orthopedics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (C.L.); (M.Z.); (S.-Y.L.); (F.-S.Z.); (T.W.); (Z.-T.D.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
| | - Song-Yang Liu
- Department of Orthopedics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (C.L.); (M.Z.); (S.-Y.L.); (F.-S.Z.); (T.W.); (Z.-T.D.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
| | - Feng-Shi Zhang
- Department of Orthopedics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (C.L.); (M.Z.); (S.-Y.L.); (F.-S.Z.); (T.W.); (Z.-T.D.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
| | - Teng Wan
- Department of Orthopedics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (C.L.); (M.Z.); (S.-Y.L.); (F.-S.Z.); (T.W.); (Z.-T.D.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
| | - Zhen-Tao Ding
- Department of Orthopedics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (C.L.); (M.Z.); (S.-Y.L.); (F.-S.Z.); (T.W.); (Z.-T.D.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
| | - Pei-Xun Zhang
- Department of Orthopedics and Trauma, Peking University People’s Hospital, Beijing 100044, China; (C.L.); (M.Z.); (S.-Y.L.); (F.-S.Z.); (T.W.); (Z.-T.D.)
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Center for Trauma Medicine, Peking University People’s Hospital, Beijing 100044, China
- Correspondence:
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Rinoldi C, Kijeńska-Gawrońska E, Khademhosseini A, Tamayol A, Swieszkowski W. Fibrous Systems as Potential Solutions for Tendon and Ligament Repair, Healing, and Regeneration. Adv Healthc Mater 2021; 10:e2001305. [PMID: 33576158 PMCID: PMC8048718 DOI: 10.1002/adhm.202001305] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/19/2020] [Indexed: 02/06/2023]
Abstract
Tendon and ligament injuries caused by trauma and degenerative diseases are frequent and affect diverse groups of the population. Such injuries reduce musculoskeletal performance, limit joint mobility, and lower people's comfort. Currently, various treatment strategies and surgical procedures are used to heal, repair, and restore the native tissue function. However, these strategies are inadequate and, in some cases, fail to re-establish the lost functionality. Tissue engineering and regenerative medicine approaches aim to overcome these disadvantages by stimulating the regeneration and formation of neotissues. Design and fabrication of artificial scaffolds with tailored mechanical properties are crucial for restoring the mechanical function of tendons. In this review, the tendon and ligament structure, their physiology, and performance are presented. On the other hand, the requirements are focused for the development of an effective reconstruction device. The most common fiber-based scaffolding systems are also described for tendon and ligament tissue regeneration like strand fibers, woven, knitted, braided, and braid-twisted fibrous structures, as well as electrospun and wet-spun constructs, discussing critically the advantages and limitations of their utilization. Finally, the potential of multilayered systems as the most effective candidates for tendon and ligaments tissue engineering is pointed out.
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Affiliation(s)
- Chiara Rinoldi
- Materials Design Division, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, 02-507, Poland
| | - Ewa Kijeńska-Gawrońska
- Materials Design Division, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, 02-507, Poland
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Warsaw, 02-822, Poland
| | - Ali Khademhosseini
- Department of Bioengineering, Department of Chemical and Biomolecular Engineering, Department of Radiology, California NanoSystems Institute (CNSI), University of California, Los Angeles, CA, 90095, USA
- Terasaki Institute for Biomedical Innovation (TIBI), Los Angeles, CA, 90024, USA
| | - Ali Tamayol
- Department of Biomedical Engineering, University of Connecticut, Farmington, CT, 06030, USA
| | - Wojciech Swieszkowski
- Materials Design Division, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, 02-507, Poland
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