1
|
Yang Y, Fan R, Li H, Chen H, Gong H, Guo G. Polysaccharides as a promising platform for the treatment of spinal cord injury: A review. Carbohydr Polym 2024; 327:121672. [PMID: 38171685 DOI: 10.1016/j.carbpol.2023.121672] [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: 10/07/2023] [Revised: 11/20/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024]
Abstract
Spinal cord injury is incurable and often results in irreversible damage to motor function and autonomic sensory abilities. To enhance the effectiveness of therapeutic substances such as cells, growth factors, drugs, and nucleic acids for treating spinal cord injuries, as well as to reduce the toxic side effects of chemical reagents, polysaccharides have been gained attention due to their immunomodulatory properties and the biocompatibility and biodegradability of polysaccharide scaffolds. Polysaccharides hold potential as drug delivery systems in treating spinal cord injuries. This article aims to present an extensive evaluation of the potential applications of polysaccharide materials in scaffold construction, drug delivery, and immunomodulation over the past five years so that offering new directions and opportunities for the treatment of spinal cord injuries.
Collapse
Affiliation(s)
- Yuanli Yang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Rangrang Fan
- Department of Neurosurgery and Institute of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hui Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Haifeng Chen
- Department of Neurosurgery and Institute of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hanlin Gong
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Gang Guo
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
| |
Collapse
|
2
|
Shahemi NH, Mahat MM, Asri NAN, Amir MA, Ab Rahim S, Kasri MA. Application of Conductive Hydrogels on Spinal Cord Injury Repair: A Review. ACS Biomater Sci Eng 2023. [PMID: 37364251 DOI: 10.1021/acsbiomaterials.3c00194] [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: 06/28/2023]
Abstract
Spinal cord injury (SCI) causes severe motor or sensory damage that leads to long-term disabilities due to disruption of electrical conduction in neuronal pathways. Despite current clinical therapies being used to limit the propagation of cell or tissue damage, the need for neuroregenerative therapies remains. Conductive hydrogels have been considered a promising neuroregenerative therapy due to their ability to provide a pro-regenerative microenvironment and flexible structure, which conforms to a complex SCI lesion. Furthermore, their conductivity can be utilized for noninvasive electrical signaling in dictating neuronal cell behavior. However, the ability of hydrogels to guide directional axon growth to reach the distal end for complete nerve reconnection remains a critical challenge. In this Review, we highlight recent advances in conductive hydrogels, including the incorporation of conductive materials, fabrication techniques, and cross-linking interactions. We also discuss important characteristics for designing conductive hydrogels for directional growth and regenerative therapy. We propose insights into electrical conductivity properties in a hydrogel that could be implemented as guidance for directional cell growth for SCI applications. Specifically, we highlight the practical implications of recent findings in the field, including the potential for conductive hydrogels to be used in clinical applications. We conclude that conductive hydrogels are a promising neuroregenerative therapy for SCI and that further research is needed to optimize their design and application.
Collapse
Affiliation(s)
- Nur Hidayah Shahemi
- Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Mohd Muzamir Mahat
- Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Nurul Ain Najihah Asri
- Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Muhammad Abid Amir
- Faculty of Medicine, Sungai Buloh Campus, Universiti Teknologi MARA, 47000 Sungai Buloh, Selangor, Malaysia
| | - Sharaniza Ab Rahim
- Faculty of Medicine, Sungai Buloh Campus, Universiti Teknologi MARA, 47000 Sungai Buloh, Selangor, Malaysia
| | - Mohamad Arif Kasri
- Kulliyyah of Science, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia
| |
Collapse
|
3
|
Jahandideh A, Noori H, Rahimi B, Hamblin MR, Behroozi Z, Ramezani M, Ramezani F. Alginate scaffolds improve functional recovery after spinal cord injury. Eur J Trauma Emerg Surg 2021; 48:1711-1721. [PMID: 34363487 DOI: 10.1007/s00068-021-01760-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 07/27/2021] [Indexed: 12/21/2022]
Abstract
PURPOSE In this systematic review and meta-analysis, the use of alginate for the repair of the damaged spinal cord was investigated. METHODS After an extensive search of databases including MEDLINE, SCOPUS, EMBASE and Web of Science, an initial screening was performed based on inclusion and exclusion criteria. The full text of related articles was reviewed and data mining was performed. Data were analyzed by calculating the mean of ratios between treated and untreated groups using STATA software. Subgroup analysis was also performed due to heterogeneity. Articles were subjected to quality control and PRISMA guidelines were followed. RESULTS Twelve studies and 17 experiments were included in the study. After SCI, alginate hydrogel had a moderate effect on motor function recovery (SMD = 0.64; 95% CI 0.28-1.00; p < 0.0001) and alginate scaffolds loaded with drugs, growth factors, or cells on the SCI group compared with untreated SCI animals showed has a strong effect in the treatment of SCI (SMD = 2.82; 95% CI 1.49-4.145; p < 0.0001). Treatment with drug/cell in combination with alginate was more strongly significant compared to the groups treated with drug/cell alone (SMD = 4.55; 95% CI 1.42-7.69; p < 0.0001). Alginate alone or in combination therapy when used as an implant, had a more significant effect than injection. CONCLUSION These findings suggest that alginate is an efficient scaffold for functional recovery and even a much better scaffold for drug/cell delivery after SCI.
Collapse
Affiliation(s)
- Atefeh Jahandideh
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hamid Noori
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Behnaz Rahimi
- Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, 2028, South Africa
| | - Zahra Behroozi
- Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Fatemeh Ramezani
- Physiology Research Center, Iran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
4
|
Lee SB, Gwark SC, Kang CM, Sohn G, Kim J, Chung IY, Lee JW, Kim HJ, Ko BS, Ahn SH, Kim W, Do J, Jeon JY, Kim J, Um E, in Yoon T, Jung SU, Han M, Son BH. The effects of poloxamer and sodium alginate mixture (Guardix-SG®) on range of motion after axillary lymph node dissection: A single-center, prospective, randomized, double-blind pilot study. PLoS One 2020; 15:e0238284. [PMID: 32966294 PMCID: PMC7510996 DOI: 10.1371/journal.pone.0238284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 03/11/2020] [Indexed: 11/18/2022] Open
Abstract
PURPOSE Restricted shoulder mobility is a major upper extremity dysfunction associated with lower quality of life and disability after breast cancer surgery. We hypothesized that a poloxamer and sodium alginate mixture (Guardix-SG®) applied after axillary lymph node dissection (ALND) would significantly improve shoulder range of motion (ROM) in patients with breast cancer. METHODS We conducted a double-blind, randomized, prospective study to evaluate the clinical efficacy and safety of Guardix-SG® for the prevention of upper extremity dysfunction after ALND. The primary outcome measure was shoulder ROM at baseline (T0) and 3 (T1), 6 (T2), and 12 months (T3) after surgery. Secondary outcome measures were the Disabilities of the Arm, Shoulder, and Hand score(DASH), pain associated with movement, which was assessed using a numeric rating scale, and lymphedema assessed using body composition analyzer. RESULTS A total of 83 women with breast cancer were randomly assigned to either the Guardix-SG® group or the control group. In the Guardix-SG® group (n = 37), Guardix-SG® was applied to the axillary region after ALND. In the control group (n = 46), ALND was performed without using Guardix-SG®. Comparing ROM for shoulder flexion before surgery (178.2°) and 12 months after surgery (172.3°), that was restored 12 months after surgery in the Guardix-SG® group, and there was no statistically significant difference between that at before surgery and 12 months after surgery (p = 0.182). No adverse effect was observed in either group. CONCLUSIONS The results of this study have shown that Guardix-SG® help improve shoulder ROM without causing adverse effects in patients who underwent breast cancer surgery. However, there was no statistically significant difference from the control group. A further large-scale study is needed to obtain a more conclusive conclusion. TRIAL REGISTRATION CRISKCT0003386; https://cris.nih.go.kr (20181207).
Collapse
Affiliation(s)
- Sae Byul Lee
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Sung-chan Gwark
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Cheol Min Kang
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Guiyun Sohn
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jisun Kim
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Il Yong Chung
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jong Won Lee
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Hee Jeong Kim
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Beom Seok Ko
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Sei-Hyun Ahn
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Won Kim
- Department of Rehabilitation Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Junghwa Do
- Department of Rehabilitation Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jae Yong Jeon
- Department of Rehabilitation Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jinsung Kim
- Division of Breast Surgery, Department of Surgery, Ulsan University Hospital, Ulsan, Korea
| | - Eunhae Um
- Department of Surgery, Inje University Ilsan Paik Hospital, Goyang-si, Gyeonggi-do, Korea
| | - Tae in Yoon
- Division of Breast Surgery, Department of Surgery, Dongnam institute of Radiological and medical science, Busan, Korea
| | - Sung-ui Jung
- Division of Breast Surgery, Department of Surgery, Kosin University Gospel Hospital, Busan, Korea
| | - Minkyu Han
- Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, Seoul, Korea
| | - Byung Ho Son
- Division of Breast Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
- * E-mail:
| |
Collapse
|
5
|
Ramot Y, Harnof S, Klein I, Amouyal N, Steiner M, Manassa NN, Bahar A, Rousselle S, Nyska A. Local Tolerance and Biodegradability of a Novel Artificial Dura Mater Graft Following Implantation Onto a Dural Defect in Rabbits. Toxicol Pathol 2020; 48:738-746. [PMID: 32812521 DOI: 10.1177/0192623320947075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Dura mater defects are a common problem following neurosurgery. Dural grafts are used to repair these defects; among them are biodegradable polymeric synthetic grafts. ArtiFascia is a novel synthetic and fibrous Dural graft, composed of poly(l-lactic-co-caprolactone acid) (PLCL) and poly(d-lactic-co-caprolactone acid). In this study, the biodegradability and local tolerance of ArtiFascia was evaluated in rabbits and compared with a bovine collagen matrix as a reference control. ArtiFascia implantation resulted in the formation of neo-dura at the site of implantation and recovery of the dural damage and the calvaria bone above. The implanted graft was completely absorbed after 12 months and the remaining macrophages were morphologically consistent with the anti-inflammatory M2-like phenotype, which contributes to tissue healing and are not pro-inflammatory. The site of the drilled skull bone had a continuous smooth surface, without exuberant tissue or inflammation and a newly formed trabecular bone formation indicated the healing process of the bone. These results support the local tolerability and biodegradability of ArtiFascia when used as a dural graft in rabbits. This study suggests that PLCL-based grafts including ArtiFascia are safe and effective to repair Rabbit Dura.
Collapse
Affiliation(s)
- Yuval Ramot
- Department of Dermatology, 162914Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Sagi Harnof
- Department of Neurosurgery, 36632Rabin Medical Center, Petah Tikva, Israel
| | - Ido Klein
- 60054Envigo CRS (Israel), Ness Ziona, Israel
| | | | | | | | - Amir Bahar
- Nurami Medical Nanofiber Technology, Haifa, Israel
| | | | - Abraham Nyska
- Toxicologic Pathology, Timrat and 26745Tel Aviv University, Timrat, Israel
| |
Collapse
|
6
|
3D bioprinting applications in neural tissue engineering for spinal cord injury repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110741. [PMID: 32204049 DOI: 10.1016/j.msec.2020.110741] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/05/2020] [Accepted: 02/10/2020] [Indexed: 01/01/2023]
Abstract
Spinal cord injury (SCI) is a disease of the central nervous system (CNS) that has not yet been treated successfully. In the United States, almost 450,000 people suffer from SCI. Despite the development of many clinical treatments, therapeutics are still at an early stage for a successful bridging of damaged nerve spaces and complete recovery of nerve functions. Biomimetic 3D scaffolds have been an effective option in repairing the damaged nervous system. 3D scaffolds allow improved host tissue engraftment and new tissue development by supplying physical support to ease cell function. Recently, 3D bioprinting techniques that may easily regulate the dimension and shape of the 3D tissue scaffold and are capable of producing scaffolds with cells have attracted attention. Production of biologically more complex microstructures can be achieved by using 3D bioprinting technology. Particularly in vitro modeling of CNS tissues for in vivo transplantation is critical in the treatment of SCI. Considering the potential impact of 3D bioprinting technology on neural studies, this review focus on 3D bioprinting methods, bio-inks, and cells widely used in neural tissue engineering and the latest technological applications of bioprinting of nerve tissues for the repair of SCI are discussed.
Collapse
|
7
|
Ghane N, Beigi MH, Labbaf S, Nasr-Esfahani MH, Kiani A. Design of hydrogel-based scaffolds for the treatment of spinal cord injuries. J Mater Chem B 2020; 8:10712-10738. [DOI: 10.1039/d0tb01842b] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hydrogel-based scaffold design approaches for the treatment of spinal cord injuries.
Collapse
Affiliation(s)
- Nazanin Ghane
- Department of Cellular Biotechnology Cell Science Research Center
- Royan Institute for Biotechnology
- ACECR
- Isfahan
- Iran
| | - Mohammad-Hossein Beigi
- Department of Cellular Biotechnology Cell Science Research Center
- Royan Institute for Biotechnology
- ACECR
- Isfahan
- Iran
| | - Sheyda Labbaf
- Biomaterials Research Group
- Department of Materials Engineering
- Isfahan University of Technology
- Isfahan
- Iran
| | | | - Amirkianoosh Kiani
- Silicon Hall: Micro/Nano Manufacturing Facility
- Faculty of Engineering and Applied Science
- Ontario Tech University
- Ontario
- Canada
| |
Collapse
|
8
|
Sah AK, Dewangan M, Suresh PK. Potential of chitosan-based carrier for periodontal drug delivery. Colloids Surf B Biointerfaces 2019; 178:185-198. [PMID: 30856588 DOI: 10.1016/j.colsurfb.2019.02.044] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/18/2019] [Accepted: 02/21/2019] [Indexed: 10/27/2022]
Abstract
Periodontal diseases are chronic infectious diseases and are a major oral health burden. With the progress in the understanding of etiology, epidemiology and pathogenesis of periodontal diseases coupled with the understanding of the polymicrobial synergy in the dysbiotic oral microbial flora, several new therapeutic targets have been identified. The strategies to curb bacterial growth and production of factors that gradually destroy the tissue surrounding and supporting the teeth have been the cornerstone for inhibiting periodontitis. Systemic administration of antibiotics for the treatment of periodontitis have shown several drawbacks including: inadequate antibiotic concentration at the site of the periodontal pocket, a rapid decline of the plasma antibiotic concentration to sub-therapeutic levels, the development of microbial resistance due to sub-therapeutic drug levels and peak-plasma antibiotic concentrations which may be associated with various side effects. These obvious disadvantages have evoked an interest in the development of localized drug delivery systems that can provide an effective concentration of antibiotic at the periodontal site for the duration of the treatment with minimal side effects. A targeted sustained release device which could be inserted in the periodontal pocket and prolong the therapeutic levels at the site of action at a much lower dose is the need of the hour. Chitosan, a deacetylated derivative of chitin has attracted considerable attention owing to its special properties including antimicrobial efficacy, biodegradability, biocompatibility and non-toxicity. It also has the propensity to act as hydrating agent and display tissue healing and osteoinducting effect. The aim of this review is to shine a spotlight on the chitosan based devices developed for drug delivery application in the effective treatment of various periodontal disorders. The chitosan based carriers like fibers, films, sponge, microparticles, nanoparticles, gels that have been designed for sustained release of drug into the periodontal pocket are highlighted.
Collapse
Affiliation(s)
- Abhishek K Sah
- Department of Pharmacy, Shri G. S. Institute of Technology & Science, 23-Park Road, Indore, 452003, MP, India
| | - Mahendra Dewangan
- Department of Pharmaceutics, University Institute of Pharmacy, Faculty of Technology, Pt. Ravishankar Shukla University, Raipur, 492010, CG, India
| | - Preeti K Suresh
- Department of Pharmaceutics, University Institute of Pharmacy, Faculty of Technology, Pt. Ravishankar Shukla University, Raipur, 492010, CG, India.
| |
Collapse
|
9
|
Galli R, Sitoci-Ficici KH, Uckermann O, Later R, Marečková M, Koch M, Leipnitz E, Schackert G, Koch E, Gelinsky M, Steiner G, Kirsch M. Label-free multiphoton microscopy reveals relevant tissue changes induced by alginate hydrogel implantation in rat spinal cord injury. Sci Rep 2018; 8:10841. [PMID: 30022115 PMCID: PMC6052076 DOI: 10.1038/s41598-018-29140-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 06/21/2018] [Indexed: 12/14/2022] Open
Abstract
The development of therapies promoting recovery after spinal cord injury is a challenge. Alginate hydrogels offer the possibility to develop biocompatible implants with mechanical properties tailored to the nervous tissue, which could provide a permissive environment for tissue repair. Here, the effects of non-functionalized soft calcium alginate hydrogel were investigated in a rat model of thoracic spinal cord hemisection and compared to lesioned untreated controls. Open field locomotion tests were employed to evaluate functional recovery. Tissue analysis was performed with label-free multiphoton microscopy using a multimodal approach that combines coherent anti-Stokes Raman scattering to visualize axonal structures, two-photon fluorescence to visualize inflammation, second harmonic generation to visualize collagenous scarring. Treated animals recovered hindlimb function significantly better than controls. Multiphoton microscopy revealed that the implant influenced the injury-induced tissue response, leading to decreased inflammation, reduced scarring with different morphology and increased presence of axons. Demyelination of contralateral white matter near the lesion was prevented. Reduced chronic inflammation and increased amount of axons in the lesion correlated with improved hindlimb functions, being thus relevant for locomotion recovery. In conclusion, non-functionalized hydrogel improved functional outcome after spinal cord injury in rats. Furthermore, label-free multiphoton microscopy qualified as suitable technique for regeneration studies.
Collapse
Affiliation(s)
- Roberta Galli
- Clinical Sensoring and Monitoring - Anesthesiology and Intensive Care Medicine, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Kerim H Sitoci-Ficici
- Molecular Neuroimaging Laboratory, Klinik und Poliklinik für Neurochirurgie, Universitätsklinikum Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Ortrud Uckermann
- Molecular Neuroimaging Laboratory, Klinik und Poliklinik für Neurochirurgie, Universitätsklinikum Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Robert Later
- Molecular Neuroimaging Laboratory, Klinik und Poliklinik für Neurochirurgie, Universitätsklinikum Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Magda Marečková
- Molecular Neuroimaging Laboratory, Klinik und Poliklinik für Neurochirurgie, Universitätsklinikum Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
- CRTD/DFG-Center for Regenerative Therapies Dresden - Cluster of Excellence, Fetscherstr. 105, 01307, Dresden, Germany
| | - Maria Koch
- Molecular Neuroimaging Laboratory, Klinik und Poliklinik für Neurochirurgie, Universitätsklinikum Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
- CRTD/DFG-Center for Regenerative Therapies Dresden - Cluster of Excellence, Fetscherstr. 105, 01307, Dresden, Germany
| | - Elke Leipnitz
- Molecular Neuroimaging Laboratory, Klinik und Poliklinik für Neurochirurgie, Universitätsklinikum Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Gabriele Schackert
- Molecular Neuroimaging Laboratory, Klinik und Poliklinik für Neurochirurgie, Universitätsklinikum Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Edmund Koch
- Clinical Sensoring and Monitoring - Anesthesiology and Intensive Care Medicine, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
- CRTD/DFG-Center for Regenerative Therapies Dresden - Cluster of Excellence, Fetscherstr. 105, 01307, Dresden, Germany
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
- CRTD/DFG-Center for Regenerative Therapies Dresden - Cluster of Excellence, Fetscherstr. 105, 01307, Dresden, Germany
| | - Gerald Steiner
- Clinical Sensoring and Monitoring - Anesthesiology and Intensive Care Medicine, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany.
| | - Matthias Kirsch
- Molecular Neuroimaging Laboratory, Klinik und Poliklinik für Neurochirurgie, Universitätsklinikum Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany.
- CRTD/DFG-Center for Regenerative Therapies Dresden - Cluster of Excellence, Fetscherstr. 105, 01307, Dresden, Germany.
| |
Collapse
|
10
|
Non-functionalized soft alginate hydrogel promotes locomotor recovery after spinal cord injury in a rat hemimyelonectomy model. Acta Neurochir (Wien) 2018; 160:449-457. [PMID: 29230560 DOI: 10.1007/s00701-017-3389-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 10/31/2017] [Indexed: 12/29/2022]
Abstract
BACKGROUND Spinal cord injury (SCI) and the consecutive devastating neurological sequelae have an enormous individual and economic impact. Implantation of functionalized hydrogels is a promising approach, because they can serve as a matrix for the regenerating tissue, carry and release bioactive molecules and various cell types. We already demonstrated that non-functionalized soft alginate hydrogel supported axonal outgrowth and protected neurons against oxidative stress in vitro. Here, we investigated the effects of such soft alginate hydrogels on locomotor recovery in small and large spinal cord lesions. METHOD Hemimyelonectomy of 2 mm or 4 mm length was performed in rats and soft alginate hydrogel was implanted. Functional recovery of the hindlimbs was assessed in the open field [Batto Beattie Bresnahan (BBB) score] and using swimming test [Louisville Swim score (LSS)] for 140 days post injury (DPI). Reference histology was performed. RESULTS Rats that received an alginate implant into 2 mm spinal cord lesions demonstrated significantly improved locomotor recovery compared to controls detectable already at 10 DPI. At 140 DPI, they reached higher LSS and BBB scores in swimming and open field tests, respectively. However, this beneficial effect of alginate was lacking in animals with larger (4 mm) lesions. Histological examination suggested that fibrous scarring in the spinal cord was reduced after alginate implantation in comparison to controls. CONCLUSIONS Implantation of soft alginate hydrogel in small spinal cord lesions improved functional recovery. Possible underlying mechanisms include the mechanical stabilization of the wound, reduction of secondary damage and inhibition of fibrous scarring.
Collapse
|
11
|
Kajiwara K, Ogata SI, Tanihara M. Promotion of Neurite Outgrowth from Fetal Hippocampal Cells by TNF-α Receptor 1-Derived Peptide. Cell Transplant 2017; 14:665-672. [DOI: 10.3727/000000005783982639] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Cytokines such as tumor necrosis factor-α (TNF-α), FasL, and TNF-related apoptosis-inducing ligand (TRAIL) induce apoptosis or inflammation through binding to their specific receptors, TNFR1, Fas, and DR5, respectively. We have previously reported ligand-binding and cell death-inhibiting synthetic peptides, which were designed based on the crystal structure of a ligand–receptor complex and the homology of the amino acid sequence among the death receptor family members. Here we show that, among these death receptor-derived peptides, the TNFR1-derived peptide specifically arrested cell proliferation and promoted cell adhesion of fetal rat (E16) hippocampal cells, and promoted neurite outgrowth from hippocampus-derived neurospheres cultured with the addition of the peptide or cultured on a peptide-coated surface. Furthermore, among these death receptor-derived peptides, marked neurite outgrowth was observed only when the neurospheres were cultured on a TNFR1-derived peptide-conjugated covalently cross-linked alginate gel. The neurites from the neurospheres positively immunostained with an antibody against neurofilaments. These results suggest that the TNFR1-derived peptide promotes neuronal differentiation of the hippocampal neural stem cells and the TNFR1-derived peptide-conjugated covalently cross-linked alginate gel may be a useful material for assisting neural stem cell transplantation.
Collapse
Affiliation(s)
- Kazumi Kajiwara
- Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630–0192, Japan
| | - Shin-Ichi Ogata
- Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630–0192, Japan
| | - Masao Tanihara
- Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630–0192, Japan
| |
Collapse
|
12
|
Lin SCY, Wang Y, Wertheim DF, Coombes AG. Production and in vitro evaluation of macroporous, cell-encapsulating alginate fibres for nerve repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 73:653-664. [DOI: 10.1016/j.msec.2016.12.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 11/01/2016] [Accepted: 12/04/2016] [Indexed: 10/20/2022]
|
13
|
Pogorielov M, Kravtsova A, Reilly GC, Deineka V, Tetteh G, Kalinkevich O, Pogorielova O, Moskalenko R, Tkach G. Experimental evaluation of new chitin-chitosan graft for duraplasty. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:34. [PMID: 28110458 DOI: 10.1007/s10856-017-5845-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 01/04/2017] [Indexed: 06/06/2023]
Abstract
Natural materials such as collagen and alginate have promising applications as dural graft substitutes. These materials are able to restore the dural defect and create optimal conditions for the development of connective tissue at the site of injury. A promising material for biomedical applications is chitosan-a linear polysaccharide obtained by the deacetylation of chitin. It has been found to be nontoxic, biodegradable, biofunctional and biocompatible in addition to having antimicrobial characteristics. In this study we designed new chitin-chitosan substitutes for dura mater closure and evaluated their effectiveness and safety. Chitosan films were produced from 3 % of chitosan (molar mass-200, 500 or 700 kDa, deacetylation rate 80-90%) with addition of 20% of chitin. Antimicrobial effictively and cell viability were analysed for the different molar masses of chitosan. The film containing chitosan of molar mass 200 kDa, had the best antimicrobial and biological activity and was successfully used for experimental duraplasty in an in vivo model. In conclusion the chitin-chitosan membrane designed here met the requirements for a dura matter graft exhibiting the ability to support cell growth, inhibit microbial growth and biodegradade at an appropriate rate. Therefore this is a promising material for clinical duroplasty.
Collapse
Affiliation(s)
- M Pogorielov
- Medical Institute, Sumy State University, 2, R-Korsakova street, Sumy, 40007, Ukraine.
| | - A Kravtsova
- Neurosurgery Department, Kharkov National Medical University, Kharkiv, Ukraine
| | - G C Reilly
- Department of Materials Science and Engineering, INSIGNEO institute for in silico medicine, University of Sheffield, Pam Liversidge Building, Mappin Street, S1 3JD, Sheffield, UK
| | - V Deineka
- Medical Institute, Sumy State University, 2, R-Korsakova street, Sumy, 40007, Ukraine
| | - G Tetteh
- Department of Materials Science and Engineering, INSIGNEO institute for in silico medicine, University of Sheffield, Pam Liversidge Building, Mappin Street, S1 3JD, Sheffield, UK
| | | | - O Pogorielova
- Medical Institute, Sumy State University, 2, R-Korsakova street, Sumy, 40007, Ukraine
| | - R Moskalenko
- Medical Institute, Sumy State University, 2, R-Korsakova street, Sumy, 40007, Ukraine
| | - G Tkach
- Medical Institute, Sumy State University, 2, R-Korsakova street, Sumy, 40007, Ukraine
| |
Collapse
|
14
|
Szarek D, Marycz K, Lis A, Zawada Z, Tabakow P, Laska J, Jarmundowicz W. Lizard tail spinal cord: a new experimental model of spinal cord injury without limb paralysis. FASEB J 2015; 30:1391-403. [DOI: 10.1096/fj.15-272468] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 11/23/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Dariusz Szarek
- Department of NeurosurgeryLower Silesia Specialist Hospital of T. MarciniakEmergency Medicine CenterWrocławPoland
| | - Krzysztof Marycz
- Department of Electron MicroscopyUniversity of Environmental and Life SciencesWrocławPoland
| | - Anna Lis
- Department of BiomaterialsAGH (Akademia Górniczo‐Hutnicza) University of Science and TechnologyKrakówPoland
| | - Zbigniew Zawada
- Department of BiologyUniversity of Zielona GóraZielona GóraPoland
| | - Paweł Tabakow
- Department of NeurosurgeryWrocław Medical UniversityWrocławPoland
| | - Jadwiga Laska
- Department of BiomaterialsAGH (Akademia Górniczo‐Hutnicza) University of Science and TechnologyKrakówPoland
| | | |
Collapse
|
15
|
Biochemical Monitoring of Spinal Cord Injury by FT-IR Spectroscopy--Effects of Therapeutic Alginate Implant in Rat Models. PLoS One 2015; 10:e0142660. [PMID: 26559822 PMCID: PMC4641584 DOI: 10.1371/journal.pone.0142660] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 10/26/2015] [Indexed: 01/04/2023] Open
Abstract
Spinal cord injury (SCI) induces complex biochemical changes, which result in inhibition of nervous tissue regeneration abilities. In this study, Fourier-transform infrared (FT-IR) spectroscopy was applied to assess the outcomes of implants made of a novel type of non-functionalized soft calcium alginate hydrogel in a rat model of spinal cord hemisection (n = 28). Using FT-IR spectroscopic imaging, we evaluated the stability of the implants and the effects on morphology and biochemistry of the injured tissue one and six months after injury. A semi-quantitative evaluation of the distribution of lipids and collagen showed that alginate significantly reduced injury-induced demyelination of the contralateral white matter and fibrotic scarring in the chronic state after SCI. The spectral information enabled to detect and localize the alginate hydrogel at the lesion site and proved its long-term persistence in vivo. These findings demonstrate a positive impact of alginate hydrogel on recovery after SCI and prove FT-IR spectroscopic imaging as alternative method to evaluate and optimize future SCI repair strategies.
Collapse
|
16
|
Grulova I, Slovinska L, Blaško J, Devaux S, Wisztorski M, Salzet M, Fournier I, Kryukov O, Cohen S, Cizkova D. Delivery of Alginate Scaffold Releasing Two Trophic Factors for Spinal Cord Injury Repair. Sci Rep 2015; 5:13702. [PMID: 26348665 PMCID: PMC4562265 DOI: 10.1038/srep13702] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 08/04/2015] [Indexed: 12/12/2022] Open
Abstract
Spinal cord injury (SCI) has been implicated in neural cell loss and consequently functional motor and sensory impairment. In this study, we propose an alginate -based neurobridge enriched with/without trophic growth factors (GFs) that can be utilized as a therapeutic approach for spinal cord repair. The bioavailability of key GFs, such as Epidermal Growth factor (EGF) and basic Fibroblast Growth Factor (bFGF) released from injected alginate biomaterial to the central lesion site significantly enhanced the sparing of spinal cord tissue and increased the number of surviving neurons (choline acetyltransferase positive motoneurons) and sensory fibres. In addition, we document enhanced outgrowth of corticospinal tract axons and presence of blood vessels at the central lesion. Tissue proteomics was performed at 3, 7 and 10 days after SCI in rats indicated the presence of anti-inflammatory factors in segments above the central lesion site, whereas in segments below, neurite outgrowth factors, inflammatory cytokines and chondroitin sulfate proteoglycan of the lectican protein family were overexpressed. Collectively, based on our data, we confirm that functional recovery was significantly improved in SCI groups receiving alginate scaffold with affinity-bound growth factors (ALG +GFs), compared to SCI animals without biomaterial treatment.
Collapse
Affiliation(s)
- I Grulova
- Institute of Neurobiology, Center of Excellence for Brain Research, Department of Regenerative Medicine and Stem Cell Therapy, Slovak Academy of Sciences, Soltesovej 4-6, 040 01 Kosice, Slovakia
| | - L Slovinska
- Institute of Neurobiology, Center of Excellence for Brain Research, Department of Regenerative Medicine and Stem Cell Therapy, Slovak Academy of Sciences, Soltesovej 4-6, 040 01 Kosice, Slovakia
| | - J Blaško
- Institute of Neurobiology, Center of Excellence for Brain Research, Department of Regenerative Medicine and Stem Cell Therapy, Slovak Academy of Sciences, Soltesovej 4-6, 040 01 Kosice, Slovakia
| | - S Devaux
- Institute of Neurobiology, Center of Excellence for Brain Research, Department of Regenerative Medicine and Stem Cell Therapy, Slovak Academy of Sciences, Soltesovej 4-6, 040 01 Kosice, Slovakia.,Laboratoire PRISM: Protéomique, Réponse Inflammatoire, Spectrométrie de Masse, INSERM U1192, Bât SN3, 1er étage, Université de Lille 1, F-59655 Villeneuve d'Ascq, France
| | - M Wisztorski
- Laboratoire PRISM: Protéomique, Réponse Inflammatoire, Spectrométrie de Masse, INSERM U1192, Bât SN3, 1er étage, Université de Lille 1, F-59655 Villeneuve d'Ascq, France
| | - M Salzet
- Laboratoire PRISM: Protéomique, Réponse Inflammatoire, Spectrométrie de Masse, INSERM U1192, Bât SN3, 1er étage, Université de Lille 1, F-59655 Villeneuve d'Ascq, France
| | - I Fournier
- Laboratoire PRISM: Protéomique, Réponse Inflammatoire, Spectrométrie de Masse, INSERM U1192, Bât SN3, 1er étage, Université de Lille 1, F-59655 Villeneuve d'Ascq, France
| | - O Kryukov
- The Center of Regenerative Medicine and Stem Cell Research and The Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - S Cohen
- The Center of Regenerative Medicine and Stem Cell Research and The Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - D Cizkova
- Institute of Neurobiology, Center of Excellence for Brain Research, Department of Regenerative Medicine and Stem Cell Therapy, Slovak Academy of Sciences, Soltesovej 4-6, 040 01 Kosice, Slovakia.,Laboratoire PRISM: Protéomique, Réponse Inflammatoire, Spectrométrie de Masse, INSERM U1192, Bât SN3, 1er étage, Université de Lille 1, F-59655 Villeneuve d'Ascq, France
| |
Collapse
|
17
|
Efficacy of Temperature-Sensitive Guardix-SG for Adhesiolysis in Experimentally Induced Eyelid Adhesion in Rabbits. Ophthalmic Plast Reconstr Surg 2013; 29:458-63. [DOI: 10.1097/iop.0b013e3182a22bae] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
18
|
Ribeiro-Samy S, Silva NA, Correlo VM, Fraga JS, Pinto L, Teixeira-Castro A, Leite-Almeida H, Almeida A, Gimble JM, Sousa N, Salgado AJ, Reis RL. Development and Characterization of a PHB-HV-based 3D Scaffold for a Tissue Engineering and Cell-therapy Combinatorial Approach for Spinal Cord Injury Regeneration. Macromol Biosci 2013; 13:1576-92. [DOI: 10.1002/mabi.201300178] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 06/26/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Silvina Ribeiro-Samy
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics; Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, 4806-909 Taipas, Guimarães Portugal
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Nuno A. Silva
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics; Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, 4806-909 Taipas, Guimarães Portugal
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Vitor M. Correlo
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics; Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, 4806-909 Taipas, Guimarães Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Joana S. Fraga
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Luísa Pinto
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Andreia Teixeira-Castro
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Hugo Leite-Almeida
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Armando Almeida
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Jeffrey M. Gimble
- Pennington Biomedical Research Center; Louisiana State University System; Baton Rouge Louisiana USA
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - António J. Salgado
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences; University of Minho-Campus de Gualtar; 4710-057 Braga Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Rui L. Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics; Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark, 4806-909 Taipas, Guimarães Portugal
- ICVS/3B's-Associate Laboratory; PT Government Associate Laboratory; Braga/Guimarães Portugal
| |
Collapse
|
19
|
Szarek D, Marycz K, Bednarz P, Tabakow P, Jarmundowicz W, Laska J. Influence of calcium alginate on peripheral nerve regeneration:In vivostudy. Biotechnol Appl Biochem 2013; 60:547-56. [DOI: 10.1002/bab.1096] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Accepted: 01/08/2013] [Indexed: 01/01/2023]
Affiliation(s)
- Dariusz Szarek
- Department of Neurosurgery; Wroclaw Medical University; Wroclaw Poland
| | - Krzysztof Marycz
- Laboratory of Electron Microscopy Studies; Wroclaw University of Environmental and Life Sciences; Wroclaw Poland
| | - Paulina Bednarz
- Department of Biomaterials; AGH University of Science and Technology; Krakow Poland
| | - Paweł Tabakow
- Department of Neurosurgery; Wroclaw Medical University; Wroclaw Poland
| | | | - Jadwiga Laska
- Department of Biomaterials; AGH University of Science and Technology; Krakow Poland
| |
Collapse
|
20
|
An anomalous behavior of trypsin immobilized in alginate network. Appl Microbiol Biotechnol 2012; 97:4403-14. [DOI: 10.1007/s00253-012-4333-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 06/27/2012] [Accepted: 07/21/2012] [Indexed: 10/28/2022]
|
21
|
Cho SH, Oh SH, Lee JH. Fabrication and characterization of porous alginate/polyvinyl alcohol hybrid scaffolds for 3D cell culture. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 16:933-47. [PMID: 16128229 DOI: 10.1163/1568562054414658] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Porous alginate/polyvinyl alcohol (PVA) hybrid scaffolds as bioartificial cell scaffolds were fabricated to improve cell compatibility as well as flexibility of the scaffolds. The alginate/PVA hybrid scaffolds with different PVA compositions up to 50 wt% were fabricated by a modified freeze-drying method including the physical cross-linking of PVA and the following chemical cross-linking of alginate. The prepared alginate/PVA hybrid scaffolds were characterized by morphology observations using scanning electron microscopy (SEM), the measurements of porosity and average pore sizes and the measurements of compressive strength and modulus. The scaffolds exhibited highly porous, open-cellular pore structures with almost the same surface and cross-sectional porosities (total porosities about 85%, regardless of PVA composition) and the pore sizes from about 290 microm to about 190 microm with increasing PVA composition. The alginate/PVA hybrid scaffolds were more soft and elastic than the control alginate scaffold without significant changes of mechanical strength. The scaffolds were examined for their in vitro cell compatibility by the culture of chondrocytes (human chondrocyte cell line) in the scaffolds and the following analyses by MTT assay and SEM observation. It was observed that the alginate/PVA scaffolds had better cell adhesion and faster growth than the control alginate scaffold. It seems that 30 wt% addition of PVA to alginate in the fabrication of the hybrid scaffolds is desirable for improving their flexibility and cell compatibility.
Collapse
Affiliation(s)
- Sang Ho Cho
- Department of Polymer Science and Engineering, Hannam University, 133 Ojeong Dong, Daedeog Gu, Daejeon 306-791, South Korea
| | | | | |
Collapse
|
22
|
Mekhail M, Almazan G, Tabrizian M. Oligodendrocyte-protection and remyelination post-spinal cord injuries: a review. Prog Neurobiol 2012; 96:322-39. [PMID: 22307058 DOI: 10.1016/j.pneurobio.2012.01.008] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2011] [Revised: 01/09/2012] [Accepted: 01/19/2012] [Indexed: 12/28/2022]
Abstract
In the past four decades, the main focus of investigators in the field of spinal cord regeneration has been to devise therapeutic measures that enhance neural regeneration. More recently, emphasis has been placed on enhancing remyelination and providing oligodendrocyte-protection after a spinal cord injury (SCI). Demyelination post-SCI is part of the cascading secondary injury that takes place immediately after the primary insult; therefore, therapeutic measures are needed to reduce oligodendrocyte death and/or enhance remyelination during the acute stage, preserving neurological functions that would be lost otherwise. In this review a thorough investigation of the oligodendrocyte-protective and remyelinative molecular therapies available to date is provided. The advent of new biomaterials shown to promote remyelination post-SCI is discussed mainly in the context of a combinatorial approach where the biomaterial also provides drug delivery capabilities. The aim of these molecular and biomaterial-based therapies is twofold: (1) oligodendrocyte-protective therapy, which involves protecting already existing oligodendrocytes from undergoing apoptosis/necrosis; and (2) inductive remyelination, which involves harnessing the remyelinative capabilities of endogenous oligodendrocyte precursor cells (OPCs) at the lesion site by providing a suitable environment for their migration, survival, proliferation and differentiation. From the evidence reported in the literature, we conclude that the use of a combinatorial approach including biomaterials and molecular therapies would provide advantages such as: (1) sustained release of the therapeutic molecule, (2) local delivery at the lesion site, and (3) an environment at the site of injury that promotes OPC migration, differentiation and remyelination.
Collapse
Affiliation(s)
- Mina Mekhail
- Department of Biomedical Engineering, McGill University, Montreal, Quebec, Canada.
| | | | | |
Collapse
|
23
|
Szarek D, Laska J, Jarmundowicz W, Blazewicz S, Tabakow P, Marycz K, Wozniak Z, Mierzwa J. Influence of Alginates on Tube Nerve Grafts of Different Elasticity - Preliminary <i>in Vivo</i> Study. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/jbnb.2012.31004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
24
|
Wang CC, Yang KC, Lin KH, Liu YL, Liu HC, Lin FH. Cartilage regeneration in SCID mice using a highly organized three-dimensional alginate scaffold. Biomaterials 2011; 33:120-7. [PMID: 21982587 DOI: 10.1016/j.biomaterials.2011.09.042] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2011] [Accepted: 09/16/2011] [Indexed: 12/11/2022]
Abstract
Tissue engineering for cartilage regeneration provides an alternative to surgery for degenerative osteoarthritis. Recently, a highly organized three-dimensional (3D) alginate scaffold was prepared using a microfluidic device; this scaffold is effective for chondrocyte culture in vitro. The performance of this scaffold was further demonstrated; an alginate scaffold seeded with porcine chondrocytes was implanted in the dorsal subcutaneous site of SCID mice. The recipients were sacrificed at 2, 4, and 6 weeks after transplantation. The grafted implants retrieved from the subcutaneous site were analyzed with histologic examinations. Real-time PCR was used to identify the gene expression patterns of the chondrocytes. The hematoxylin and eosin staining showed that the chondrocytes survived normally in SCID mice; cartilage-like structures were formed after 4 weeks implantation. Immunohistochemical staining revealed cells secreted type II collagen, produced glycosaminoglycans (proved by alcian blue stain), and maintained the expression of S-100. On the other hand, the cells were negative for type I and type X collagen staining. PCR showed that the mRNA expressions of aggrecan and type II collagen were up-regulated at weeks two and four, while type I and type X collagen were down-regulated during the study period. In summary, this highly organized 3D alginate scaffold provided a suitable environment and maintained functional phenotypes for chondrocytes in this animal study.
Collapse
Affiliation(s)
- Chen-Chie Wang
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 10051, Taiwan.
| | | | | | | | | | | |
Collapse
|
25
|
Francis NL, Shanbhag MS, Fischer I, Wheatley MA. Influence of alginate cross-linking method on neurite response to microencapsulated neurotrophin-producing fibroblasts. J Microencapsul 2011; 28:353-62. [DOI: 10.3109/02652048.2011.569765] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
26
|
Wang CC, Yang KC, Lin KH, Liu HC, Lin FH. A highly organized three-dimensional alginate scaffold for cartilage tissue engineering prepared by microfluidic technology. Biomaterials 2011; 32:7118-26. [PMID: 21724248 DOI: 10.1016/j.biomaterials.2011.06.018] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Accepted: 06/09/2011] [Indexed: 01/15/2023]
Abstract
Osteoarthritis is a degenerative disease and frequently involves the knee, hip and phalangeal joints. Current treatments used in small cartilage defects including multiple drilling, abrasion arthroplasty, mosaicplasty, and autogenous chondrocyte transplantation, however, there are problems needed to be solved. The standard treatment for severe osteoarthritis is total joint arthroplasty. The disadvantages of this surgery are the possibility of implant loosening. Therefore, tissue engineering for cartilage regeneration has become a promising topic. We have developed a new method to produce a highly organized single polymer (alginate) scaffold using microfluidic device. Scanning electron microscope and confocal fluoroscope examinations showed that the scaffold has a regular interconnected porous structure in the scale of 250 μm and high porosity. The scaffold is effective in chondrocyte culture; the cell viability test (WST-1 assay), cell toxicity (lactate dehydrogenase assay), cell survival rate, extracellular matrix production (glycosaminoglycans contents), cell proliferation (DNA quantification), and gene expression (real-time PCR) all revealed good results for chondrocyte culture. The chondrocytes can maintain normal phenotypes, highly express aggrecan and type II collagen, and secrete a great deal of extracellular matrix when seeded in the alginate scaffold. This study demonstrated that a highly organized alginate scaffold can be prepared with an economical microfluidic device, and this scaffold is effective in cartilage tissue engineering.
Collapse
Affiliation(s)
- Chen-Chie Wang
- Institute of Biomedical Engineering, College of Engineering and College of Medicine, National Taiwan University, Taipei, Taiwan, ROC.
| | | | | | | | | |
Collapse
|
27
|
Zurita M, Otero L, Aguayo C, Bonilla C, Ferreira E, Parajón A, Vaquero J. Cell therapy for spinal cord repair: optimization of biologic scaffolds for survival and neural differentiation of human bone marrow stromal cells. Cytotherapy 2011; 12:522-37. [PMID: 20465485 DOI: 10.3109/14653241003615164] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND AIMS The suppression of cell apoptosis using a biodegradable scaffold to replace the missing or altered extracellular matrix (ECM) could increase the survival of transplanted cells and thus increase the effectiveness of cell therapy. METHODS We studied the best conditions for the proliferation and differentiation of human bone marrow stromal cells (hBMSC) when cultured on different biologic scaffolds derived from fibrin and blood plasma, and analyzed the best concentrations of fibrinogen, thrombin and calcium chloride for favoring cell survival. The induction of neural differentiation of hBMSC was done by adding to these scaffolds different growth factors, such as nerve growth factor (NGF), brain-derived-neurotrophic factor (BDNF) and retinoic acid (RA), at concentrations of 100 ng/mL (NGF and BDNF) and 1 micro/mL (RA), over 7 days. RESULTS Although both types of scaffold allowed survival and neural differentiation of hBMSC, the results showed a clear superiority of platelet-rich plasma (PRP) scaffolds, mainly after BDNF administration, allowing most of the hBMSC to survive and differentiate into a neural phenotype. CONCLUSIONS Given that clinical trials for spinal cord injury using hBMSC are starting, these findings may have important clinical applications.
Collapse
Affiliation(s)
- Mercedes Zurita
- Neuroscience Research Unit of Surgical Research Service, Hospital Puerta de Hierro-Majadahonda, Madrid, Spain
| | | | | | | | | | | | | |
Collapse
|
28
|
Cellular and paracellular transplants for spinal cord injury: a review of the literature. Childs Nerv Syst 2011; 27:237-43. [PMID: 20972681 DOI: 10.1007/s00381-010-1312-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Accepted: 10/11/2010] [Indexed: 01/01/2023]
Abstract
BACKGROUND Experimental approaches to limit the spinal cord injury and to promote neurite outgrowth and improved function from a spinal cord injury have exploded in recent decades. Due to the cavitation resulting after a spinal cord injury, newer important treatment strategies have consisted of implanting scaffolds with or without cellular transplants. There are various scaffolds, as well as various different cellular transplants including stem cells at different levels of differentiation, Schwann cells and peripheral nerve implants, that have been reviewed. Also, attention has been given to different re-implantation techniques in avulsion injuries. METHODS Using standard search engines, this literature is reviewed. CONCLUSION Cellular and paracellular transplantation for application to spinal cord injury offers promising results for those patients with spinal cord pathology.
Collapse
|
29
|
Hejčl A, Jendelová P, Syková E. Experimental reconstruction of the injured spinal cord. Adv Tech Stand Neurosurg 2011:65-95. [PMID: 21997741 DOI: 10.1007/978-3-7091-0673-0_3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Injury to the spinal cord, with its pathological sequelae, results in a permanent neurological deficit. With currently available tools at hand, there is very little that clinicians can do to treat such a condition with the view of helping patients with spinal cord injury (SCI). On the other hand, in the last 20 years experimental research has brought new insights into the pathophysiology of spinal cord injury; we can divide the time course into 3 phases: primary injury (the time of traumatic impact and the period immediately afterwards), the secondary phase (cell death, inflammation, ischemia), and the chronic phase (scarring, demyelination, cyst formation). Increased knowledge about the pathophysiology of SCI can stimulate the development of new therapeutic modalities and approaches, which may be feasible in the future in clinical practice. Some of the most promising experimental therapies include: neurotrophic factors, enzymes and antibodies against inhibitory molecules (such as Nogo), activated macrophages, stem cells and bridging scaffolds. Their common goal is to reconstitute the damaged tissue in order to recover the lost function. In the current review, we focus on some of the recent developments in experimental SCI research.
Collapse
Affiliation(s)
- A Hejčl
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | | | | |
Collapse
|
30
|
Ellis-Behnke RG, Schneider GE. Peptide amphiphiles and porous biodegradable scaffolds for tissue regeneration in the brain and spinal cord. Methods Mol Biol 2011; 726:259-81. [PMID: 21424455 DOI: 10.1007/978-1-61779-052-2_17] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Many promising strategies have been developed for controlling the release of drugs from scaffolds, yet there are still challenges that need to be addressed in order for these scaffolds to serve as successful treatments. The RADA4 self-assembling peptide spontaneously forms nanofibers, creating a scaffold-like tissue-bridging structure that provides a three-dimensional environment for the migration of living cells. We have found that RADA4: (1) facilitates the regeneration of axons in the brain of young and adult hamsters, leading to functional return of behavior and (2) demonstrates robust migration of host cells and growth of blood vessels and axons, leading to the repair of injured spinal cords in rats.
Collapse
Affiliation(s)
- Rutledge G Ellis-Behnke
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | | |
Collapse
|
31
|
|
32
|
Shanbhag MS, Lathia JD, Mughal MR, Francis NL, Pashos N, Mattson MP, Wheatley MA. Neural progenitor cells grown on hydrogel surfaces respond to the product of the transgene of encapsulated genetically engineered fibroblasts. Biomacromolecules 2010; 11:2936-43. [PMID: 20942395 DOI: 10.1021/bm100699q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Engineered tissue strategies for central nervous system (CNS) repair have the potential for localizing treatment using a wide variety of cells or growth factors. However, these strategies are often limited by their ability to address only one aspect of the injury. Here we report the development of a novel alginate construct that acts as a multifunctional tissue scaffold for CNS repair, and as a localized growth factor delivery vehicle. We show that the surface of this alginate construct acts as an optimal growth environment for neural progenitor cell (NPC) attachment, survival, migration, and differentiation. Importantly, we show that tailor-made alginate constructs containing brain-derived neurotrophic factor or neurotrophin-3 differentially direct lineage fates of NPCs and may therefore be useful in treating a wide variety of injuries. It is this potential for directed differentiation of a scaffold prior to implantation at the injury site that we explore here.
Collapse
Affiliation(s)
- Mihir S Shanbhag
- School of Biomedical Engineering, Science, and Health Systems, Drexel University, 3141 Chestnut Street, Philadelphia Pennsylvania 19104, United States, Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, 251 Bayview Boulevard, Suite 100, Baltimore, Maryland 21224-6825, United States, and Department of Pathology and Centre for Brain Repair, University of Cambridge, Cambridge, United Kingdom
| | | | | | | | | | | | | |
Collapse
|
33
|
Bechara SL, Judson A, Popat KC. Template synthesized poly(ɛ-caprolactone) nanowire surfaces for neural tissue engineering. Biomaterials 2010; 31:3492-501. [DOI: 10.1016/j.biomaterials.2010.01.084] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2009] [Accepted: 01/12/2010] [Indexed: 10/19/2022]
|
34
|
Madigan NN, McMahon S, O'Brien T, Yaszemski MJ, Windebank AJ. Current tissue engineering and novel therapeutic approaches to axonal regeneration following spinal cord injury using polymer scaffolds. Respir Physiol Neurobiol 2009; 169:183-99. [PMID: 19737633 DOI: 10.1016/j.resp.2009.08.015] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Revised: 08/25/2009] [Accepted: 08/29/2009] [Indexed: 12/19/2022]
Abstract
This review highlights current tissue engineering and novel therapeutic approaches to axonal regeneration following spinal cord injury. The concept of developing 3-dimensional polymer scaffolds for placement into a spinal cord transection model has recently been more extensively explored as a solution for restoring neurologic function after injury. Given the patient morbidity associated with respiratory compromise, the discrete tracts in the spinal cord conveying innervation for breathing represent an important and achievable therapeutic target. The aim is to derive new neuronal tissue from the surrounding, healthy cord that will be guided by the polymer implant through the injured area to make functional reconnections. A variety of naturally derived and synthetic biomaterial polymers have been developed for placement in the injured spinal cord. Axonal growth is supported by inherent properties of the selected polymer, the architecture of the scaffold, permissive microstructures such as pores, grooves or polymer fibres, and surface modifications to provide improved adherence and growth directionality. Structural support of axonal regeneration is combined with integrated polymeric and cellular delivery systems for therapeutic drugs and for neurotrophic molecules to regionalize growth of specific nerve populations.
Collapse
|
35
|
Yamashita T, Deguchi K, Nagotani S, Kamiya T, Abe K. Gene and Stem Cell Therapy in Ischemic Stroke. Cell Transplant 2009; 18:999-1002. [DOI: 10.3727/096368909x471233] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Possible strategies for treating ischemic stroke include neuroprotection (preventing injured neurons from undergoing apoptosis in the acute phase of cerebral ischemia) and stem cell therapy (the repair of disrupted neuronal networks with newly born neurons in the chronic phase of cerebral ischemia). First, we estimated the neuroprotective effect of glial cell line-derived neurotrophic factor (GDNF) by administration of GFNF protein. GDNF protein showed a direct protective effect against ischemic brain damage. Pretreatment of animals with adenoviral vector containing GDNF gene (Ad-GDNF) 24 h before the subsequent transient middle cerebral artery occlusion (MCAO) effectively reduced infarcted volume. Secondly, we studied the neuroprotective effect of a calcium channel blocker, azelnidipine, or a by-product of heme degradation, biliverdin. Both azelnidipine and biliverdin had a neuroprotective effect in the ischemic brain through their antioxidative property. Lastly, we developed a restorative stroke therapy with a bioaffinitive scaffold, which is able to provide an appropriate platform for newly born neurons. In the future, we will combine these strategies to develop more effective therapies for treatment of strokes.
Collapse
Affiliation(s)
- Toru Yamashita
- Department of Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kentaro Deguchi
- Department of Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Shoko Nagotani
- Department of Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tatsushi Kamiya
- Department of Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Koji Abe
- Department of Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
36
|
Ellis-Behnke RG, Liang YX, Guo J, Tay DKC, Schneider GE, Teather LA, Wu W, So KF. Forever Young: How to Control the Elongation, Differentiation, and Proliferation of Cells Using Nanotechnology. Cell Transplant 2009; 18:1047-58. [DOI: 10.3727/096368909x471242] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Within the emerging field of stem cells there is a need for an environment that can regulate cell activity, to slow down differentiation or proliferation, in vitro or in vivo while remaining invisible to the immune system. By creating a nanoenvironment surrounding PC12 cells, Schwann cells, and neural precursor cells (NPCs), we were able to control the proliferation, elongation, differentiation, and maturation in vitro. We extended the method, using self-assembling nanofiber scaffold (SAPNS), to living animals with implants in the brain and spinal cord. Here we show that when cells are placed in a defined system we can delay their proliferation, differentiation, and maturation depending on the density of the cell population, density of the matrix, and the local environment. A combination of SAPNS and young cells can be implanted into the central nervous system (CNS), eliminating the need for immunosuppressants.
Collapse
Affiliation(s)
- R. G. Ellis-Behnke
- Department of Anatomy, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
- State Key Lab for Brain & Cognitive Sciences, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Y. X. Liang
- Department of Anatomy, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
| | - J. Guo
- Department of Anatomy, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
| | - D. K. C. Tay
- Department of Anatomy, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
| | - G. E. Schneider
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - L. A. Teather
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - W. Wu
- Department of Anatomy, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
- State Key Lab for Brain & Cognitive Sciences, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
- Research Center of Reproduction, Development and Growth, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
| | - K. F. So
- Department of Anatomy, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
- State Key Lab for Brain & Cognitive Sciences, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong Li Ka Shing Faculty of Medicine, Pokfulam, Hong Kong SAR, China
| |
Collapse
|
37
|
Yoshii S, Ito S, Shima M, Taniguchi A, Akagi M. Functional restoration of rabbit spinal cord using collagen-filament scaffold. J Tissue Eng Regen Med 2009; 3:19-25. [DOI: 10.1002/term.130] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
38
|
Nisbet DR, Crompton KE, Horne MK, Finkelstein DI, Forsythe JS. Neural tissue engineering of the CNS using hydrogels. J Biomed Mater Res B Appl Biomater 2008; 87:251-63. [DOI: 10.1002/jbm.b.31000] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
39
|
Yamashita T, Deguchi K, Sehara Y, Lukic-Panin V, Zhang H, Kamiya T, Abe K. Therapeutic strategy for ischemic stroke. Neurochem Res 2008; 34:707-10. [PMID: 18770029 DOI: 10.1007/s11064-008-9842-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2008] [Accepted: 08/22/2008] [Indexed: 02/01/2023]
Abstract
Possible strategies for treating ischemic stroke include: (1) Neuroprotection: preventing damaged neurons from undergoing apoptosis in the acute phase of cerebral ischemia; (2) Stem cell therapy: the repair of broken neuronal networks with newly born neurons in the chronic phase of cerebral ischemia. Firstly, we studied the neuroprotective effect of a calcium channel blocker, azelnidipine, or a by-product of heme degradation, biliverdin, in the ischemic brain. These results revealed both azelnidipine and biliverdin had a neuroprotective effect in the ischemic brain through their anti-oxidative property. Secondly, we investigated the role of granulocyte colony-stimulating factor (G-CSF) by administering G-CSF to rats after cerebral ischemia and found G-CSF plays a critical role in neuroprotection. Lastly, we developed a restorative stroke therapy with a bio-affinitive scaffold, which is able to provide an appropriate environment for newly born neurons. In the future, we will combine these strategies to develop more effective therapies for treatment of strokes.
Collapse
Affiliation(s)
- Toru Yamashita
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan.
| | | | | | | | | | | | | |
Collapse
|
40
|
Willerth SM, Sakiyama-Elbert SE. Approaches to neural tissue engineering using scaffolds for drug delivery. Adv Drug Deliv Rev 2007; 59:325-38. [PMID: 17482308 PMCID: PMC1976339 DOI: 10.1016/j.addr.2007.03.014] [Citation(s) in RCA: 214] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2006] [Accepted: 03/28/2007] [Indexed: 02/07/2023]
Abstract
This review seeks to give an overview of the current approaches to drug delivery from scaffolds for neural tissue engineering applications. The challenges presented by attempting to replicate the three types of nervous tissue (brain, spinal cord, and peripheral nerve) are summarized. Potential scaffold materials (both synthetic and natural) and target drugs are discussed with the benefits and drawbacks given. Finally, common methods of drug delivery, including degradable/diffusion-based delivery systems, affinity-based delivery systems, immobilized drug delivery systems, and electrically controlled drug delivery systems, are examined and critiqued. Based on the current body of work, suggestions for future directions of research in the field of neural tissue engineering are presented.
Collapse
Affiliation(s)
| | - Shelly E. Sakiyama-Elbert
- Department of Biomedical Engineering, Washington University in St. Louis
- Center for Materials Innovation, Washington University in St. Louis
- * To whom correspondence should be addressed: Shelly Sakiyama-Elbert, Department of Biomedical Engineering, Washington University, Campus Box 1097, One Brookings Drive, St. Louis, MO 63130,
| |
Collapse
|
41
|
Samadikuchaksaraei A. An overview of tissue engineering approaches for management of spinal cord injuries. J Neuroeng Rehabil 2007; 4:15. [PMID: 17501987 PMCID: PMC1876804 DOI: 10.1186/1743-0003-4-15] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2006] [Accepted: 05/14/2007] [Indexed: 01/09/2023] Open
Abstract
Severe spinal cord injury (SCI) leads to devastating neurological deficits and disabilities, which necessitates spending a great deal of health budget for psychological and healthcare problems of these patients and their relatives. This justifies the cost of research into the new modalities for treatment of spinal cord injuries, even in developing countries. Apart from surgical management and nerve grafting, several other approaches have been adopted for management of this condition including pharmacologic and gene therapy, cell therapy, and use of different cell-free or cell-seeded bioscaffolds. In current paper, the recent developments for therapeutic delivery of stem and non-stem cells to the site of injury, and application of cell-free and cell-seeded natural and synthetic scaffolds have been reviewed.
Collapse
Affiliation(s)
- Ali Samadikuchaksaraei
- Department of Biotechnology, Faculty of Allied Medicine and Cellular and Molecular Research Center, Iran University of Medical Sciences, Iran.
| |
Collapse
|
42
|
Zhang H, Hayashi T, Tsuru K, Deguchi K, Nagahara M, Hayakawa S, Nagai M, Kamiya T, Osaka A, Abe K. Vascular endothelial growth factor promotes brain tissue regeneration with a novel biomaterial polydimethylsiloxane-tetraethoxysilane. Brain Res 2006; 1132:29-35. [PMID: 17189618 DOI: 10.1016/j.brainres.2006.09.117] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2006] [Revised: 09/21/2006] [Accepted: 09/25/2006] [Indexed: 12/22/2022]
Abstract
In the brain after infarction or trauma, the tissue eventually becomes pannecrotic and forms a cavity. In such situations, a scaffold is necessary for the implanted or migrated cells to produce new tissue. In this present study, therefore, we attempted to restore brain tissue using a novel biomaterial, polydimethylsiloxane-tetraethoxysilane (PDMS-TEOS) hybrid with or without vascular endothelial growth factor (VEGF), which is crucial for new vessel formation. When PDMS-TEOS scaffold was implanted into the artificial brain defect, it remained at the implanted site and kept the integrity of the brain shape. At 30 days after the implantation, the marginal territory of PDMS-TEOS scaffold became occupied by newly formed tissue. Immunohistochemical analysis revealed that the new tissue was constituted by astrocytes and endothelial cells. Addition of VEGF increased the newly produced tissue volume, and the immunohistochemical analysis showed that the numbers of astrocytes and endothelial cells were increased. Double staining with proliferation maker Ki67 demonstrated that VEGF significantly increased newly formed astrocytes and endothelial cells, indicating that addition of VEGF accelerated tissue restoration and angiogenesis. These findings show that implantation of PDMS-TEOS scaffold with VEGF might be effective for treating old brain infarction or trauma.
Collapse
Affiliation(s)
- HanZhe Zhang
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmacy, Okayama University, 2-5-1 Shikata-cho, Okayama, 700-8558, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Matsuura S, Obara T, Tsuchiya N, Suzuki Y, Habuchi T. Cavernous nerve regeneration by biodegradable alginate gel sponge sheet placement without sutures. Urology 2006; 68:1366-71. [PMID: 17169666 DOI: 10.1016/j.urology.2006.09.051] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2006] [Revised: 07/19/2006] [Accepted: 09/21/2006] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Alginate, a biodegradable polysaccharide, may be applied to facilitate nerve regeneration. We attempted to regenerate excised cavernous nerves by filling the gap with a biodegradable alginate gel sponge sheet without sutures. METHODS Bilateral cavernous nerves of male Wistar rats were excised to make an approximately 2-mm gap. A piece of freeze-dried alginate sheet was then placed over the gap to cover each stump without suturing (alginate group). We also performed sham operations (sham group) and bilateral nerve excision alone (excision group). RESULTS Erection was confirmed visually by mating behavior in 9%, 36% and 73% of alginate rats at 2, 4, and 12 weeks, respectively. In contrast, no excision rats had an erection. At 12 weeks postoperatively, electrical stimulation of the pelvic plexus increased intracavernous pressure in the sham group and alginate rats with restored erectile function. However, no increase occurred in the excision group. In a retrograde neural tracing study with FluoroGold at 12 weeks, rich FluoroGold-positive cells were observed in the sham group and alginate rats with restoration, but very few were found in the excision group. Double-labeled immunochemistry with anti-S-100 and beta-tubulin III antibodies showed that the neural gap was connected with the regenerated nerve fibers at 12 weeks. CONCLUSIONS The results of our animal study have demonstrated that by simply filling the nerve gap using an alginate sheet, the cavernous nerve can be regenerated and erectile function may be restored.
Collapse
Affiliation(s)
- Shinobu Matsuura
- Department of Urology, Akita University School of Medicine, Akita, Japan.
| | | | | | | | | |
Collapse
|
44
|
Pasparakis G, Bouropoulos N. Swelling studies and in vitro release of verapamil from calcium alginate and calcium alginate–chitosan beads. Int J Pharm 2006; 323:34-42. [PMID: 16828245 DOI: 10.1016/j.ijpharm.2006.05.054] [Citation(s) in RCA: 314] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2005] [Revised: 04/12/2006] [Accepted: 05/24/2006] [Indexed: 10/24/2022]
Abstract
The aim of the present work was to investigate the swelling behavior and the in vitro release of the antihypertensive drug verapamil hydrochloride from calcium alginate and chitosan treated calcium alginate beads. Calcium-alginate beads, chitosan-coated alginate beads and alginate-chitosan mixed beads were synthesized and their morphology was investigated by scanning electron microscopy. The swelling ability of the beads in different media was found to be dependent on the presence of the polyelectrolyte complex between alginate and chitosan, the pH of the aqueous media and the initial physical state of the beads. The results revealed that the encapsulation of verapamil in both calcium-alginate and calcium alginate-chitosan mixed beads exceeded 80%. Considering the in vitro stability of verapamil encapsulating beads, 70% of the drug released from wet and dry plain calcium alginate beads within 1 and 3h, respectively. The presence of chitosan was found to retard significantly the release from wet beads. However, in the case of dry beads the presence of chitosan had no significant effect on the initial release stage and significantly increased the release on the later stage. The results were analyzed by using a semi-empirical equation and it was found that the drug release mechanisms were either "anomalous transport" or "case-II transport".
Collapse
Affiliation(s)
- George Pasparakis
- Department of Materials Science, University of Patras, 26504 Patras, Greece
| | | |
Collapse
|
45
|
Deguchi K, Tsuru K, Hayashi T, Takaishi M, Nagahara M, Nagotani S, Sehara Y, Jin G, Zhang H, Hayakawa S, Shoji M, Miyazaki M, Osaka A, Huh NH, Abe K. Implantation of a new porous gelatin-siloxane hybrid into a brain lesion as a potential scaffold for tissue regeneration. J Cereb Blood Flow Metab 2006; 26:1263-73. [PMID: 16407853 DOI: 10.1038/sj.jcbfm.9600275] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
For brain tissue regeneration, any scaffold for migrated or transplanted stem cells with supportive angiogenesis is important once necrotic brain tissue has formed a cavity after injury such as cerebral ischemia. In this study, a new porous gelatin-siloxane hybrid derived from the integration of gelatin and 3-(glycidoxypropyl) trimethoxysilane was implanted as a three-dimensional scaffold into a defect of the cerebral cortex. The porous hybrid implanted into the lesion remained at the same site for 60 days, kept integrity of the brain shape, and attached well to the surrounding brain tissues. Marginal cavities of the scaffolds were occupied by newly formed tissue in the brain, where newly produced vascular endothelial, astroglial, and microglial cells were found with bromodeoxyuridine double positivity, and the numbers of those cells were dose-dependently increased with the addition of basic fibroblast growth factor (bFGF) and epidermal growth factor (EGF). Extension of dendrites was also found from the surrounding cerebral cortex to the newly formed tissue, especially with the addition of bFGF and EGF. The present study showed that a new porous gelatin-siloxane hybrid had biocompatibility after implantation into a lesion of the central nervous system, and thus provided a potential scaffold for cell migration, angiogenesis and dendrite elongation with dose-dependent effects of additive bFGF and EGF.
Collapse
Affiliation(s)
- Kentaro Deguchi
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmacy, Faculty of Engineering, Okayama University, Okayama, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Crow BB, Nelson KD. Release of bovine serum albumin from a hydrogel-cored biodegradable polymer fiber. Biopolymers 2006; 81:419-27. [PMID: 16419061 DOI: 10.1002/bip.20442] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We have developed a novel biodegradable, polymeric fiber construct that is coextruded using a wet-spinning process into a core-sheath format with a polysaccharide pre-hydrogel solution as the core fluid and poly(L-lactic acid) (PLLA) as the sheath. The biodegradable, biocompatible fibers were extruded from polymeric emulsions comprised of solutions of various molecular weights of PLLA dissolved in chloroform and containing dispersed, protein-free aqueous phases comprising up to 10% of the emulsion volume. Biologically sensitive agents can be loaded via a dispersed aqueous phase in the polymer, and/or directly into the polysaccharide. We show that this core-sheath fiber format will load a model protein that can be delivered for extended periods in vitro. Bovine serum albumin (BSA) was loaded into the fiber core as a model protein. We have shown that the greater the volume of the protein-free aqueous phase dispersed into the polymeric continuous-phase emulsion, the greater the total release of BSA encapsulated by a core gel comprised of 1% sodium alginate solution. We conclude this fiber format provides a promising vehicle for in vivo delivery of biological molecules. Its biocompatibility and biodegradability also allow for its use as a possible substrate for tissue engineering applications.
Collapse
Affiliation(s)
- B B Crow
- Joint Program in Biomedical Engineering, The University of Texas Southwestern Medical Center at Dallas, TX, USA.
| | | |
Collapse
|
47
|
Li X, Liu T, Song K, Yao L, Ge D, Bao C, Ma X, Cui Z. Culture of Neural Stem Cells in Calcium Alginate Beads. Biotechnol Prog 2006. [DOI: 10.1002/bp060185z] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
48
|
Novikova LN, Mosahebi A, Wiberg M, Terenghi G, Kellerth JO, Novikov LN. Alginate hydrogel and matrigel as potential cell carriers for neurotransplantation. J Biomed Mater Res A 2006; 77:242-52. [PMID: 16392134 DOI: 10.1002/jbm.a.30603] [Citation(s) in RCA: 136] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Development of biosynthetic conduits carrying extracellular matrix molecules and cell lines expressing neurotrophic growth factors represents a novel and promising strategy for spinal cord and peripheral nerve repair. In the present in vitro study, the compatibility and growth-promoting effects of (i) alginate hydrogel, (ii) alginate hydrogel complemented with fibronectin, and (iii) matrigel were compared between olfactory ensheathing cells (OECs), Schwann cells (SCs), and bone marrow stromal cells (BMSCs). Neurite outgrowth from embryonic dorsal root ganglia (DRG) neurons was used to assess the efficacy of the hydrogels alone or in combination with cultured cells to promote axonal regeneration. The result showed that alginate hydrogel transformed OECs, SCs, and BMSCs into atypical cells with spherical shape and inhibited their metabolic activity. Combination of alginate hydrogel with fibronectin promoted only OECs proliferation. Alginate hydrogel also inhibited outgrowth of DRG neurites, although this effect was attenuated by addition of fibronectin, SCs, or BMSCs. In contrast, matrigel stimulated cell proliferation, preserved the typical morphological features of the cultured cells and induced massive sprouting of DRG neurites. Addition of cultured cells to matrigel did not further improve DRG neurite outgrowth. The present findings suggest that addition of extracellular matrix should be considered when engineering biosynthetic scaffolds on the basis of alginate hydrogels.
Collapse
Affiliation(s)
- Liudmila N Novikova
- Department of Integrative Medical Biology, Section of Anatomy, Umeå University, SE-901 87 Umeå, Sweden.
| | | | | | | | | | | |
Collapse
|
49
|
Noushi F, Richardson RT, Hardman J, Clark G, O'Leary S. Delivery of neurotrophin-3 to the cochlea using alginate beads. Otol Neurotol 2005; 26:528-33. [PMID: 15891662 DOI: 10.1097/01.mao.0000169780.84588.a5] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The aim of this study was to design a novel cochlear neurotrophin (NT) delivery system for the rescue of auditory neurons after ototoxicity-induced deafening. BACKGROUND NT-3 is a trophic growth factor that promotes the survival of the auditory nerve and may have a potential therapeutic role in slowing neuron loss in progressive deafness, especially as an adjunct to the current cochlear implant. Beads made from alginate are biodegradable, slow release substances that can be placed at the round window or inside the cochlea. This study investigated the loading properties, release kinetics, and implantation potential of alginate beads loaded with NT-3. METHODS Alginate beads were prepared using an ionic gelation technique and postloaded with NT-3. Release of NT-3 was measured using enzyme-linked immunosorbent assay over 5 days. Alginate beads were implanted into deafened guinea pigs for 28 days, after which survival of auditory neurons was assessed. RESULTS Enzyme-linked immunosorbent assay studies demonstrated a 98% to 99% loading of NT-3 with a slow, partial release over 5 days in Ringer's solution. Furthermore, the addition of heparin to the delivery system modulated NT-3 release to a steadier pattern. Implantation of alginate-heparin beads in guinea pig cochleae produced minimal local tissue reaction. NT-3 loaded beads implanted at both the round window and within the scala tympani of the basal turn provided auditory neurons significant protection from degradation and apoptosis compared with unloaded beads or untreated cochleae. CONCLUSIONS This study demonstrates alginate beads to be a safe, biodegradable and effective delivery system for NT-3 to the cochlea.
Collapse
Affiliation(s)
- Farnoosh Noushi
- University of Melbourne, Department of Otolaryngology, East Melbourne, Australia
| | | | | | | | | |
Collapse
|
50
|
Synthesis and in vivo evaluation of a novel hydroxyapatite/collagen–alginate as a bone filler and a drug delivery carrier of bone morphogenetic protein. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2004. [DOI: 10.1016/j.msec.2003.12.003] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|