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Muniz NO, Baudequin T. Biomimetic and Nonbiomimetic Approaches in Dura Substitutes: The Influence of Mechanical Properties. TISSUE ENGINEERING. PART B, REVIEWS 2024. [PMID: 38874958 DOI: 10.1089/ten.teb.2024.0079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
The dura mater, the furthest and strongest layer of the meninges, is crucial for protecting the brain and spinal cord. Its biomechanical behavior is vital, as any alterations can compromise biological functions. In recent decades, interest in the dura mater has increased due to the need for hermetic closure of dural defects prompting the development of several substitutes. Collagen-based dural substitutes are common commercial options, but they lack the complex biological and structural elements of the native dura mater, impacting regeneration and potentially causing complications like wound/postoperative infection and cerebrospinal fluid (CSF) leakage. To face this issue, recent tissue engineering approaches focus on creating biomimetic dura mater substitutes. The objective of this review is to discuss whether mimicking the mechanical properties of native tissue or ensuring high biocompatibility and bioactivity is more critical in developing effective dural substitutes, or if both aspects should be systematically linked. After a brief description of the properties and architecture of the native cranial dura, we describe the advantages and limitations of biomimetic dura mater substitutes to better understand their relevance. In particular, we consider biomechanical properties' impact on dura repair's effectiveness. Finally, the obstacles and perspectives for developing the ideal dural substitute are explored.
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Affiliation(s)
- Nathália Oderich Muniz
- Université de Technologie de Compiègne, CNRS, Biomechanics and Bioengineering, Centre de recherche Royallieu, Compiègne Cedex, France
| | - Timothée Baudequin
- Université de Technologie de Compiègne, CNRS, Biomechanics and Bioengineering, Centre de recherche Royallieu, Compiègne Cedex, France
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2
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Wang Y, Wu H, Liu Z, Cao J, Lin H, Cao H, Zhu X, Zhang X. A robust and biodegradable hydroxyapatite/poly(lactide- co-ε-caprolactone) electrospun membrane for dura repair. J Mater Chem B 2024; 12:6117-6127. [PMID: 38841904 DOI: 10.1039/d4tb00863d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Typically occurring after trauma or neurosurgery treatments, dura mater defect and the ensuing cerebrospinal fluid (CSF) leakage could lead to a number of serious complications and even patient's death. Although numerous natural and synthetic dura mater substitutes have been reported, none of them have been able to fulfill the essential properties, such as anti-adhesion, leakage blockage, and pro-dura rebuilding. In this study, we devised and prepared a series of robust and biodegradable hydroxyapatite/poly(lactide-co-ε-caprolactone) (nHA/PLCL) membranes for dura repair via an electrospinning technique. In particular, PLLA/PCL (80/20) was selected for electrospinning due to its mechanical properties that most closely resembled natural dural tissue. Studies by SEM, XRD, water contact angle and in vitro degradation showed that the introduction of nHA would destroy PLCL's crystalline structure, which would further affect the mechanical properties of the nHA/PLCL membranes. When the amount of nHA added increased, so did the wettability and in vitro degradation rate, which accelerated the release of nHA. In addition, the high biocompatibility of nHA/PLCL membranes was demonstrated by in vitro cytotoxicity data. The in vivo rabbit dura repair model results showed that nHA/PLCL membranes provided a strong physical barrier to stop tissue adhesion at dura defects. Meanwhile, the nHA/PLCL and commercial group's CSF had a significantly lower number of inflammatory cells than the control groups, validating the nHA/PLCL's ability to effectively lower the risk of intracranial infection. Findings from H&E and Masson-trichrome staining verified that the nHA/PLCL electrospun membrane was more favorable for fostering dural defect repair and skull regeneration. Moreover, the relative molecular weight of PLCL declined dramatically after 3 months of implantation, according to the results of the in vivo degradation test, but it retained the fiber network structure and promoted tissue growth, demonstrating the good stability of the nHA/PLCL membranes. Collectively, the nHA/PLCL electrospun membrane presents itself as a viable option for dura repair.
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Affiliation(s)
- Yifu Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
- College of Biomedical Engineering, Sichuan University, Chengdu 610064, P. R. China
| | - Hongfeng Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
- Medical School, Kunming University of Science and Technology, Kunming 650500, P. R. China
| | - Zhanhong Liu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
- College of Biomedical Engineering, Sichuan University, Chengdu 610064, P. R. China
| | - Jun Cao
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
- College of Biomedical Engineering, Sichuan University, Chengdu 610064, P. R. China
| | - Hai Lin
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
- College of Biomedical Engineering, Sichuan University, Chengdu 610064, P. R. China
| | - Huan Cao
- Department of Nuclear Medicine and Clinical Nuclear Medicine Research Lab, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.
| | - Xiangdong Zhu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
- College of Biomedical Engineering, Sichuan University, Chengdu 610064, P. R. China
| | - Xingdong Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
- College of Biomedical Engineering, Sichuan University, Chengdu 610064, P. R. China
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Ramot Y, Kronfeld N, Steiner M, Manassa NN, Bahar A, Nyska A. Neural tissue tolerance to synthetic dural mater graft implantation in a rabbit durotomy model. J Toxicol Pathol 2024; 37:83-91. [PMID: 38584968 PMCID: PMC10995433 DOI: 10.1293/tox.2023-0121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/09/2024] [Indexed: 04/09/2024] Open
Abstract
In neurosurgical interventions, effective closure of the dura mater is essential to prevent cerebrospinal fluid leakage and minimize post-operative complications. Biodegradable synthetic materials have the potential to be used as dura mater grafts owing to their regenerative properties and low immunogenicity. This study evaluated the safety of ArtiFascia, a synthetic dura mater graft composed of poly(l-lactic-co-caprolactone acid) and poly(d-lactic-co-caprolactone acid), in a rabbit durotomy model. Previously, ArtiFascia demonstrated positive local tolerance and biodegradability in a 12-month preclinical trial. Here, specialized stains were used to evaluate potential brain damage associated with ArtiFascia use. Histochemical and immunohistochemical assessments included Luxol Fast Blue, cresyl Violet, Masson's Trichrome, neuronal nuclei,, Glial Fibrillary Acidic Protein, and ionized calcium-binding adaptor molecule 1 stains. The stained slides were graded based on the brain-specific reactions. The results showed no damage to the underlying brain tissue for either the ArtiFascia or control implants. Neither inflammation nor neuronal loss was evident, corroborating the safety of the ArtiFascia. This approach, combined with previous histopathological analyses, strengthens the safety profile of ArtiFascia and sets a benchmark for biodegradable material assessment in dura graft applications. This study aligns with the Food and Drug Administration guidelines and offers a comprehensive evaluation of the potential neural tissue effects of synthetic dura mater grafts.
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Affiliation(s)
- Yuval Ramot
- Department of Dermatology, Hadassah Medical Center, PO Box
12000, Jerusalem, 9112001, Israel
- The Faculty of Medicine, Hebrew University of Jerusalem, PO
Box 12272, Jerusalem, 9112001, Israel
| | - Noam Kronfeld
- Department of Dermatology, Hadassah Medical Center, PO Box
12000, Jerusalem, 9112001, Israel
- Envigo CRS (Israel), Einstein St., Building 13B, Weizmann
Science Park, Ness Ziona, 7414001, Israel
| | - Michal Steiner
- Pre-Clinical Consultant, Carmel St. 11/22, Rehovot, 7630511,
Israel
| | - Nora Nseir Manassa
- Nurami Medical Nanofiber Technology, Ha-Namal St 36, Haifa,
303203, Israel
| | - Amir Bahar
- Nurami Medical Nanofiber Technology, Ha-Namal St 36, Haifa,
303203, Israel
| | - Abraham Nyska
- Consultant in Toxicologic Pathology, Tel Aviv and Tel Aviv
University, Yehuda HaMaccabi 31, Tel Aviv 6200515, Israel
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Zhu Y, Zhang C, Liang Y, Shi J, Yu Q, Liu S, Yu D, Liu H. Advanced postoperative tissue antiadhesive membranes enabled with electrospun nanofibers. Biomater Sci 2024; 12:1643-1661. [PMID: 38411223 DOI: 10.1039/d3bm02038j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Tissue adhesion is one of the most common postoperative complications, which is frequently accompanied by inflammation, pain, and even dyskinesia, significantly reducing the quality of life of patients. Thus, to prevent the formation of tissue adhesions, various strategies have been explored. Among these methods, placing anti-adhesion membranes over the injured site to separate the wound from surrounding tissues is a simple and prominently favored method. Recently, electrospun nanofibers have been the most frequently investigated antiadhesive membranes due to their tunable porous structure and high porosities. They not only can act as an essential barrier and functional carrier system but also allow for high permeability and nutrient transport, showing great potential for preventing tissue adhesion. Herein, we provide a short review of the most recent applications of electrospun nanofibrous antiadhesive membranes in tendons, the abdominal cavity, dural sac, pericardium, and meninges. Firstly, each section highlights the most representative examples and they are sorted based on the latest progress of related research. Moreover, the design principles, preparation strategies, overall performances, and existing problems are highlighted and evaluated. Finally, the current challenges and several future ways to develop electrospun nanofibrous antiadhesive membranes are proposed. The systematic discussion and proposed directions can shed light on ideas and guide the reasonable design of electrospun nanofibrous membranes, contributing to the development of exceptional tissue anti-adhesive materials in the foreseeable future.
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Affiliation(s)
- Yanting Zhu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Chenwei Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Ying Liang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Jianyuan Shi
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Qiuhao Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Shen Liu
- Department of Orthopaedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China
| | - Dengguang Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
- Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai 200093, PR China
| | - Hui Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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Erdoğan N, Şen Karaman D, Yıldız Ö, Özdemir GD, Ercan UK. Mesoporous silica nanoparticles accommodating electrospun nanofibers as implantable local drug delivery system processed by cold atmospheric plasma and spin coating approaches. Biomed Mater 2024; 19:025015. [PMID: 38181435 DOI: 10.1088/1748-605x/ad1bb1] [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: 08/02/2023] [Accepted: 01/05/2024] [Indexed: 01/07/2024]
Abstract
Nanofibers (NF) and nanoparticles are attractive for drug delivery to improve the drug bioavailability and administration. Easy manipulation of NF as macroscopic bulk material give rise to potential usages as implantable local drug delivery systems (LLDS) to overcome the failures of systemic drug delivery systems such as unmet personalized needs, side effects, suboptimal dosage. In this study, poly(ethylene glycol) polyethyleneimine (mPEG:PEI) copolymer blended polyϵ-caprolactone NFs, NFblendaccommodating mesoporous silica nanoparticles (MSN) as the implantable LLDS was achieved by employing spin coating and cold atmospheric plasma (CAP) as the post-process for accommodation on NFblend. The macroporous morphology, mechanical properties, wettability, andin vitrocytocompatibility of NFblendensured their potential as an implantable LLDS and superior features compared to neat NF. The electron microscopy images affirmed of NFblendrandom fiber (average diameter 832 ± 321 nm) alignments and accessible macropores before and after MSN@Cur accommodation. The blending of polymers improved the elongation of NF and the tensile strength which is attributed as beneficial for implantable LLDS. CAP treatment could significantly improve the wettability of NF observed by the contact angle changes from ∼126° to ∼50° which is critical for the accommodation of curcumin-loaded MSN (MSN@Cur) andin vitrocytocompatibility of NF. The combined CAP and spin coating as the post-processes was employed for accommodating MSN@Cur on NFblendwithout interfering with the electrospinning process. The post-processing aided fine-tuning of curcumin dosing (∼3 µg to ∼15 µg) per dose unit and sustained zero-order drug release profile could be achieved. Introducing of MSN@Cur to cells via LLDS promoted the cell proliferation compared to MSN@Cur suspension treatments and assigned as the elimination of adverse effects by nanocarriers by the dosage form integration. All in all, NFblend-MSN@Cur was shown to have high potential to be employed as an implantable LLDS. To the best of our knowledge, this is the first study in which mPEG:PEI copolymer blend NF are united with CAP and spin coating for accommodating nano-drug carriers, which allows for NF both tissue engineering and drug delivery applications.
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Affiliation(s)
- Nursu Erdoğan
- Department of Biomedical Engineering, Graduate School of Natural and Applied Sciences, Izmir Katip Çelebi University, Izmir, Turkey
| | - Didem Şen Karaman
- Department of Biomedical Engineering, Faculty of Engineering and Architecture, Izmir Katip Çelebi University, Izmir, Turkey
| | - Özlem Yıldız
- Department of Biomedical Engineering, Graduate School of Natural and Applied Sciences, Izmir Katip Çelebi University, Izmir, Turkey
| | - Gizem Dilara Özdemir
- Department of Biomedical Engineering, Faculty of Engineering and Architecture, Izmir Katip Çelebi University, Izmir, Turkey
- Department of Biomedical Technologies, Graduate School of Natural and Applied Sciences, Izmir Katip Çelebi University, Izmir, Turkey
| | - Utku Kürşat Ercan
- Department of Biomedical Engineering, Faculty of Engineering and Architecture, Izmir Katip Çelebi University, Izmir, Turkey
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Xing J, Zhang M, Liu X, Wang C, Xu N, Xing D. Multi-material electrospinning: from methods to biomedical applications. Mater Today Bio 2023; 21:100710. [PMID: 37545561 PMCID: PMC10401296 DOI: 10.1016/j.mtbio.2023.100710] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 06/03/2023] [Accepted: 06/16/2023] [Indexed: 08/08/2023] Open
Abstract
Electrospinning as a versatile, simple, and cost-effective method to engineer a variety of micro or nanofibrous materials, has contributed to significant developments in the biomedical field. However, the traditional electrospinning of single material only can produce homogeneous fibrous assemblies with limited functional properties, which oftentimes fails to meet the ever-increasing requirements of biomedical applications. Thus, multi-material electrospinning referring to engineering two or more kinds of materials, has been recently developed to enable the fabrication of diversified complex fibrous structures with advanced performance for greatly promoting biomedical development. This review firstly gives an overview of multi-material electrospinning modalities, with a highlight on their features and accessibility for constructing different complex fibrous structures. A perspective of how multi-material electrospinning opens up new opportunities for specific biomedical applications, i.e., tissue engineering and drug delivery, is also offered.
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Affiliation(s)
- Jiyao Xing
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266071, China
- Qingdao Cancer Institute, Qingdao, 266071, China
| | - Miao Zhang
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266071, China
- Qingdao Cancer Institute, Qingdao, 266071, China
| | - Xinlin Liu
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266071, China
- Qingdao Cancer Institute, Qingdao, 266071, China
| | - Chao Wang
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266071, China
- Qingdao Cancer Institute, Qingdao, 266071, China
| | - Nannan Xu
- School of Computer Science and Technology, Ocean University of China, Qingdao, 266000, China
| | - Dongming Xing
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266071, China
- Qingdao Cancer Institute, Qingdao, 266071, China
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
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7
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Tu Z, Han F, Zhu Z, Yu Q, Liu C, Bao Y, Li B, Zhou F. Sustained release of basic fibroblast growth factor in micro/nanofibrous scaffolds promotes annulus fibrosus regeneration. Acta Biomater 2023; 166:241-253. [PMID: 37230436 DOI: 10.1016/j.actbio.2023.05.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 05/14/2023] [Accepted: 05/18/2023] [Indexed: 05/27/2023]
Abstract
Tissue engineering has promising applications in the treatment of intervertebral disc degeneration (IDD). The annulus fibrosus (AF) is critical for maintaining the physiological function of the intervertebral disc (IVD), but the lack of vessels and nutrition in AF makes it difficult to repair. In this study, we used hyaluronan (HA) micro-sol electrospinning and collagen type I (Col-I) self-assembly techniques to fabricate layered biomimetic micro/nanofibrous scaffolds, which released basic fibroblast growth factor (bFGF) to promote AF repair and regeneration after discectomy and endoscopic transforaminal discectomy. The bFGF enveloped in the core of the poly-L-lactic-acid (PLLA) core-shell structure was released in a sustained manner and promoted the adhesion and proliferation of AF cells (AFCs). Col-I could self-assemble on the shell of the PLLA core-shell scaffold to mimic the extracellular matrix (ECM) microenvironment, providing structural and biochemical cues for the regeneration of AF tissue. The in vivo studies showed that the micro/nanofibrous scaffolds promoted the repair of AF defects by simulating the microstructure of native AF tissue and inducing endogenous regeneration mechanism. Taken together, the biomimetic micro/nanofibrous scaffolds have clinical potential for the treatment of AF defects caused by IDD. STATEMENT OF SIGNIFICANCE: The annulus fibrosus (AF) is essential for the intervertebral disc (IVD) physiological function, yet it lacks vascularity and nutrition, making repair difficult. Micro-sol electrospinning technology and collagen type I (Col-I) self-assembly technique were combined in this study to create a layered biomimetic micro/nanofibrous scaffold that releases basic fibroblast growth factor (bFGF) to promote AF repair and regeneration. Col-I could mimic the extracellular matrix (ECM) microenvironment, in vivo, offering structural and biochemical cues for AF tissue regeneration. This research indicates that micro/nanofibrous scaffolds have clinical potential for treating AF deficits induced by IDD.
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Affiliation(s)
- Zhengdong Tu
- Department of Orthopaedic Surgery, Orthopedic Institute, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Feng Han
- Department of Orthopaedic Surgery, Orthopedic Institute, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Zhuang Zhu
- Department of Orthopaedic Surgery, Orthopedic Institute, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Qifan Yu
- Department of Orthopaedic Surgery, Orthopedic Institute, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Changjiang Liu
- Department of Orthopaedic Surgery, Orthopedic Institute, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Yu Bao
- Department of Orthopaedic Surgery, Orthopedic Institute, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Bin Li
- Department of Orthopaedic Surgery, Orthopedic Institute, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, China.
| | - Feng Zhou
- Department of Orthopaedic Surgery, Orthopedic Institute, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, China.
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Pant B, Park M, Kim AA. Electrospun Nanofibers for Dura Mater Regeneration: A Mini Review on Current Progress. Pharmaceutics 2023; 15:pharmaceutics15051347. [PMID: 37242589 DOI: 10.3390/pharmaceutics15051347] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/14/2023] [Accepted: 04/22/2023] [Indexed: 05/28/2023] Open
Abstract
Dural defects are a common problem in neurosurgical procedures and should be repaired to avoid complications such as cerebrospinal fluid leakage, brain swelling, epilepsy, intracranial infection, and so on. Various types of dural substitutes have been prepared and used for the treatment of dural defects. In recent years, electrospun nanofibers have been applied for various biomedical applications, including dural regeneration, due to their interesting properties such as a large surface area to volume ratio, porosity, superior mechanical properties, ease of surface modification, and, most importantly, similarity with the extracellular matrix (ECM). Despite continuous efforts, the development of suitable dura mater substrates has had limited success. This review summarizes the investigation and development of electrospun nanofibers with particular emphasis on dura mater regeneration. The objective of this mini-review article is to give readers a quick overview of the recent advances in electrospinning for dura mater repair.
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Affiliation(s)
- Bishweshwar Pant
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju 55338, Republic of Korea
- Woosuk Institute of Smart Convergence Life Care (WSCLC), Woosuk University, Wanju 55338, Republic of Korea
- Department of Automotive Engineering, Woosuk University, Wanju 55338, Republic of Korea
| | - Mira Park
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju 55338, Republic of Korea
- Woosuk Institute of Smart Convergence Life Care (WSCLC), Woosuk University, Wanju 55338, Republic of Korea
- Department of Automotive Engineering, Woosuk University, Wanju 55338, Republic of Korea
| | - Allison A Kim
- Department of Healthcare Management, Woosong University, Daejon 34606, Republic of Korea
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Design and Fabrication of Nanofibrous Dura Mater with Antifibrosis and Neuroprotection Effects on SH-SY5Y Cells. Polymers (Basel) 2022; 14:polym14091882. [PMID: 35567051 PMCID: PMC9099771 DOI: 10.3390/polym14091882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/13/2022] [Accepted: 04/25/2022] [Indexed: 01/27/2023] Open
Abstract
The development and treatment of some diseases, such as large-area cerebral infarction, cerebral hemorrhage, brain tumor, and craniocerebral trauma, which may involve the injury of the dura mater, elicit the need to repair this membrane by dural grafts. However, common dural grafts tend to result in dural adhesions and scar tissue and have no further neuroprotective effects. In order to reduce or avoid the complications of dural repair, we used PLGA, tetramethylpyrazine, and chitosan as raw materials to prepare a nanofibrous dura mater (NDM) with excellent biocompatibility and adequate mechanical characteristics, which can play a neuroprotective role and have an antifibrotic effect. We fabricated PLGA NDM by electrospinning, and then chitosan was grafted on the nanofibrous dura mater by the EDC-NHS cross-linking method to obtain PLGA/CS NDM. Then, we also prepared PLGA/TMP/CS NDM by coaxial electrospinning. Our study shows that the PLGA/TMP/CS NDM can inhibit the excessive proliferation of fibroblasts, as well as provide a sustained protective effect on the SH-SY5Y cells treated with oxygen–glucose deprivation/reperfusion (OGD/R). In conclusion, our study may provide a new alternative to dural grafts in undesirable cases of dural injuries.
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Sharma D, Saha S, Satapathy BK. Recent advances in polymer scaffolds for biomedical applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 33:342-408. [PMID: 34606739 DOI: 10.1080/09205063.2021.1989569] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The review provides insights into current advancements in electrospinning-assisted manufacturing for optimally designing biomedical devices for their prospective applications in tissue engineering, wound healing, drug delivery, sensing, and enzyme immobilization, and others. Further, the evolution of electrospinning-based hybrid biomedical devices using a combined approach of 3 D printing and/or film casting/molding, to design dimensionally stable membranes/micro-nanofibrous assemblies/patches/porous surfaces, etc. is reported. The influence of various electrospinning parameters, polymeric material, testing environment, and other allied factors on the morphological and physico-mechanical properties of electrospun (nano-/micro-fibrous) mats (EMs) and fibrous assemblies have been compiled and critically discussed. The spectrum of operational research and statistical approaches that are now being adopted for efficient optimization of electrospinning process parameters so as to obtain the desired response (physical and structural attributes) has prospectively been looked into. Further, the present review summarizes some current limitations and future perspectives for modeling architecturally novel hybrid 3 D/selectively textured structural assemblies, such as biocompatible, non-toxic, and bioresorbable mats/scaffolds/membranes/patches with apt mechanical stability, as biological substrates for various regenerative and non-regenerative therapeutic devices.
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Affiliation(s)
- Deepika Sharma
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Sampa Saha
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Bhabani K Satapathy
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
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11
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Biomechanics of vascular areas of the human cranial dura mater. J Mech Behav Biomed Mater 2021; 125:104866. [PMID: 34655943 DOI: 10.1016/j.jmbbm.2021.104866] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/07/2021] [Accepted: 09/26/2021] [Indexed: 11/21/2022]
Abstract
Accurate biomechanical properties of the human cranial dura mater are paramount for computational head models, artificial graft developments and biomechanical basic research. Yet, it is unclear whether areas of the dura containing meningeal vessels biomechanically differ from avascular areas. Here, 244 dura mater samples with or without vessels from 32 cadavers were tested in a quasi-static uniaxial tensile testing setup. The thicknesses of the meningeal and periosteal dura in vascular and avascular areas were histologically investigated in 36 samples using van Gieson staining. The elastic modulus of 112 MPa from dura samples containing vessels running transversely was significantly lower than samples with vessels running longitudinally (151 MPa; p < 0.001). The ultimate tensile strength of dura samples with transversely running vessels (11.1 MPa) was significantly lower in comparison to both avascular samples (14.9 MPa; p < 0.001) and samples with a longitudinally running vessel (15.0 MPa; p < 0.001). The maximum force of dura samples with longitudinally running vessels was 37 N (p < 0.001), this was significantly higher compared to the other groups which were 23 N (p < 0.001). The meningeal and periosteal dura layer thicknesses were not statistically different in avascular areas (p > 0.222). However, around the vessels, the meningeal dura layer was significantly thicker compared to the periosteal layer (p ≤ 0.019). The sum of the meningeal and periosteal layers was similar between vascular and avascular areas (p ≥ 0.071). Vascular areas of the human cranial dura mater withstand the same forces as avascular areas when being stretched. When stretched along the vessel, the dura-vessel composite can withstand even higher tensile forces compared to avascular areas. Vascular areas of the cranial dura mater seem to be similar when compared to avascular areas making their separate simulation in computational models non-essential.
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12
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Wang J, Li K, Xu J, Liu M, Li P, Li X, Fan Y. A biomimetic hierarchical small intestinal submucosa-chitosan sponge/chitosan hydrogel scaffold with a micro/nano structure for dural repair. J Mater Chem B 2021; 9:7821-7834. [PMID: 34586141 DOI: 10.1039/d1tb00948f] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dura mater is an essential barrier to protect the brain tissue and the dural defects caused by accidents can lead to serious complications. Various materials have been applied to dural repair, but it remains a challenge to perfectly match the structure and properties of the natural dura mater. Small intestinal submucosa has been developed for dural repair because of its excellent biocompatibility and biological activity, but its application is tremendously limited by the rapid degradation rate. Chitosan has also been broadly investigated in tissue repair, but the traditional chitosan hydrogels exhibit poor mechanical properties. A nanofiber chitosan hydrogel can be constructed based on an alkaline solvent, which is equipped with surprisingly high strength. Therefore, based on the bilayer structure of the natural dura mater, a biomimetic hierarchical small intestinal submucosa-chitosan sponge/chitosan hydrogel scaffold with a micro/nano structure was fabricated, which possessed a microporous structure in the upper sponge and a nanofiber structure in the lower hydrogel. The degradation rate was remarkably reduced compared with that of the small intestinal submucosa in the enzymatic degradation experiment in vitro. Meanwhile, the chitosan nanofibers brought high mechanical strength to the bilayer scaffold. Moreover, the hierarchical micro/nano structure and the active factors in the small intestinal submucosa have a fantastic effect on promoting the proliferation of fibroblasts and vascular endothelial cells. The bilayer scaffold showed good histocompatibility in the experiment of in vitro subcutaneous implantation in rats. Thus, the biomimetic hierarchical small intestinal submucosa-chitosan sponge/chitosan hydrogel scaffold with micro/nano structure simulates the structure of the natural dura mater and possesses properties with excellent performance, which has high practical value for dural repair.
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Affiliation(s)
- Jingxi Wang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
| | - Kun Li
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
| | - Junwei Xu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
| | - Meili Liu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
| | - Ping Li
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
| | - Xiaoming Li
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
| | - Yubo Fan
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China. .,School of Medical Science and Engineering, Beihang University, Beijing, 100191, China
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A biomimetic triple-layered biocomposite with effective multifunction for dura repair. Acta Biomater 2021; 130:248-267. [PMID: 34118449 DOI: 10.1016/j.actbio.2021.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/04/2021] [Accepted: 06/01/2021] [Indexed: 12/11/2022]
Abstract
Dura mater defect and subsequent cerebrospinal fluid (CSF) leakage usually appear in trauma or neurosurgical procedures and are followed by a series of serious complications and even death. The use of a qualified dura mater substitute with multifunction of leakage blockade, adhesion prevention, and dura reconstruction is one of the promising treatment methods. However, even though some products have been used in the clinic, none of the substitutes achieved the required multifunction. In this study, we aimed to design and fabricate a dura repair composite with the ideal multifunction. By biomimicking the structure and component of natural dura, we applied poly(L-lactic acid) (PLLA), chitosan (CS), gelatin, and acellular small intestinal submucosa (SIS) powders to successfully prepare a triple-layered composite. Then, a series of specific devices and techniques were developed to investigate the performance. The results revealed that satisfactory structural stability could be realized under good synergistic interactions among the components. In addition, all the findings suggested that the bionic triple-layered composite showed satisfactory multifunction of leakage blockade, adhesion prevention, antibacterial property, and dura reconstruction potential, and thus, it might be a promising candidate for dura repair. STATEMENT OF SIGNIFICANCE: Developing qualified dura mater substitutes with multifunction of leakage blockade, adhesion prevention, and dura reconstruction is crucial for treating dura mater defect and subsequent cerebrospinal fluid (CSF) leakage that appear in trauma or neurosurgical procedures. In this study, we designed and fabricated a triple-layered dura repair biocomposite with satisfactory structural stability and desired multifunction based on biomimicking of the structure and component of natural dura. Moreover, a series of specific devices and techniques were developed to investigate the relevant performance. Overall, the developed hydrogel electrospinning system exhibited excellent advantages in achieving multifunction and could be applied widely in the future to achieve multifunctional tissue repair materials.
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Ma H, Sun Y, Tang Y, Shen Y, Kan Z, Li Q, Fang S, Lu Y, Zhou X, Li Z. Robust Electrospun Nanofibers from Chemosynthetic Poly(4-hydroxybutyrate) as Artificial Dural Substitute. Macromol Biosci 2021; 21:e2100134. [PMID: 33955128 DOI: 10.1002/mabi.202100134] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Indexed: 11/07/2022]
Abstract
Bioresorbable poly(4-hydroxybutyrate) (P4HB) may fulfill the specific requirements that are necessary for a dural substitute, including its high elasticity, long-term strength retention properties, and the biocompatibility without significant accumulation of acidic degradation products. However, commercial P4HB can only be produced by the bacterial fermentation, which limits its applications in the cerebrospinal system due to higher endotoxin restriction. Meanwhile, P4HB can be prepared via the ring-opening polymerization of γ-butyrolactone. In this contribution, high molecular weight P4HB from chemosynthesis is electrospun into fibrous membrane, showing good mechanical properties that match the natural dura mater. Such P4HB membrane induces fast cellular migration, adhesion, and proliferation of fibroblasts in vitro. Subcutaneous implantation in rats demonstrates excellent biocompatibility of the P4HB membrane with proper biodegradation behaviors. After implantation in the rabbit dural defect model as an onlay graft, the P4HB membranes prevent cerebrospinal fluid leakage and regenerate dura tissue without detecting any local or systematic infections or foreign body responses. Thus, the electrospun P4HB membranes may be particularly useful as artificial dural substitutes to induce wound closure and tissue regeneration, which will be of great benefit to neurosurgery in the future.
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Affiliation(s)
- Huihui Ma
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, 266042, P. R. China
| | - Yilin Sun
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, 266042, P. R. China
| | - Ying Tang
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, 266042, P. R. China
| | - Yong Shen
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Ze Kan
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, 266042, P. R. China
| | - Qing Li
- Qingdao Chunghao Tissue Engineering Co. Ltd., Qingdao, 266003, P. R. China
| | - Sha Fang
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, 266042, P. R. China
| | - Yingxi Lu
- College of Material Science and engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Xianfeng Zhou
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, 266042, P. R. China
| | - Zhibo Li
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao, 266042, P. R. China.,College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
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15
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Minooei F, Fried JR, Fuqua JL, Palmer KE, Steinbach-Rankins JM. In vitro Study on Synergistic Interactions Between Free and Encapsulated Q-Griffithsin and Antiretrovirals Against HIV-1 Infection. Int J Nanomedicine 2021; 16:1189-1206. [PMID: 33623382 PMCID: PMC7894819 DOI: 10.2147/ijn.s287310] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 12/19/2020] [Indexed: 12/31/2022] Open
Abstract
Introduction Human immunodeficiency virus (HIV) remains a persistent global challenge, impacting 38 million people worldwide. Antiretrovirals (ARVs) including tenofovir (TFV), raltegravir (RAL), and dapivirine (DAP) have been developed to prevent and treat HIV-1 via different mechanisms of action. In parallel, a promising biological candidate, griffithsin (GRFT), has demonstrated outstanding preclinical safety and potency against HIV-1. While ARV co-administration has been shown to enhance virus inhibition, synergistic interactions between ARVs and the oxidation-resistant variant of GRFT (Q-GRFT) have not yet been explored. Here, we co-administered Q-GRFT with TFV, RAL, and DAP, in free and encapsulated forms, to identify unique protein-drug synergies. Methods Nanoparticles (NPs) were synthesized using a single or double-emulsion technique and release from each formulation was assessed in simulated vaginal fluid. Next, each ARV, in free and encapsulated forms, was co-administered with Q-GRFT or Q-GRFT NPs to evaluate the impact of co-administration in HIV-1 pseudovirus assays, and the combination indices were calculated to identify synergistic interactions. Using the most synergistic formulations, we investigated the effect of agent incorporation in NP-fiber composites on release properties. Finally, NP safety was assessed in vitro using MTT assay. Results All active agents were encapsulated in NPs with desirable encapsulation efficiency (15–100%), providing ~20% release over 2 weeks. The co-administration of free Q-GRFT with each free ARV resulted in strong synergistic interactions, relative to each agent alone. Similarly, Q-GRFT NP and ARV NP co-administration resulted in synergy across all formulations, with the most potent interactions between encapsulated Q-GRFT and DAP. Furthermore, the incorporation of Q-GRFT and DAP in NP-fiber composites resulted in burst release of DAP and Q-GRFT with a second phase of Q-GRFT release. Finally, all NP formulations exhibited safety in vitro. Conclusions This work suggests that Q-GRFT and ARV co-administration in free or encapsulated forms may improve efficacy in achieving prophylaxis.
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Affiliation(s)
- Farnaz Minooei
- Department of Chemical Engineering, University of Louisville Speed School of Engineering, Louisville, KY, USA
| | - Joel R Fried
- Department of Chemical Engineering, University of Louisville Speed School of Engineering, Louisville, KY, USA
| | - Joshua L Fuqua
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY, USA.,Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA.,Center for Predictive Medicine, University of Louisville, Louisville, KY, USA
| | - Kenneth E Palmer
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA.,Center for Predictive Medicine, University of Louisville, Louisville, KY, USA.,Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, KY, USA
| | - Jill M Steinbach-Rankins
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY, USA.,Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA.,Center for Predictive Medicine, University of Louisville, Louisville, KY, USA.,Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, KY, USA
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Lowen JM, Leach JK. Functionally graded biomaterials for use as model systems and replacement tissues. ADVANCED FUNCTIONAL MATERIALS 2020; 30:1909089. [PMID: 33456431 PMCID: PMC7810245 DOI: 10.1002/adfm.201909089] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Indexed: 05/03/2023]
Abstract
The heterogeneity of native tissues requires complex materials to provide suitable substitutes for model systems and replacement tissues. Functionally graded materials have the potential to address this challenge by mimicking the gradients in heterogeneous tissues such as porosity, mineralization, and fiber alignment to influence strength, ductility, and cell signaling. Advancements in microfluidics, electrospinning, and 3D printing enable the creation of increasingly complex gradient materials that further our understanding of physiological gradients. The combination of these methods enables rapid prototyping of constructs with high spatial resolution. However, successful translation of these gradients requires both spatial and temporal presentation of cues to model the complexity of native tissues that few materials have demonstrated. This review highlights recent strategies to engineer functionally graded materials for the modeling and repair of heterogeneous tissues, together with a description of how cells interact with various gradients.
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Affiliation(s)
- Jeremy M. Lowen
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
| | - J. Kent Leach
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
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17
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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.
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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
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Bi X, Liu B, Mao Z, Wang C, Dunne N, Fan Y, Li X. Applications of materials for dural reconstruction in pre-clinical and clinical studies: Advantages and drawbacks, efficacy, and selections. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111326. [PMID: 32919680 DOI: 10.1016/j.msec.2020.111326] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/26/2020] [Accepted: 07/30/2020] [Indexed: 12/29/2022]
Abstract
The dura mater provides a barrier to protect the tissue underneath and cerebrospinal fluid. However, dural defects normally cause cerebrospinal fluid leakage and other complications, such as wound infections, meningitis, etc. Therefore, the reconstruction of dura mater has important clinical significance. Current dural reconstruction materials include: homologous, acellular, natural, synthetic, and composite materials. This review comprehensively summarizes the characteristics and efficacy of these dural substitutes, especially in clinical applications, including the advantages and drawbacks of those from different sources, the host tissue response in pre-clinical studies and clinical practice, and the comparison of these materials across different surgical procedures. Furthermore, the selections of materials for different surgical procedures are highlighted. Finally, the challenges and future perspectives in the development of ideal dural repair materials are discussed.
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Affiliation(s)
- Xuewei Bi
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China
| | - Bo Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China
| | - Zhinan Mao
- International Research Center for Advanced Structural and Biomaterials, School of Materials Science & Engineering, Beihang University, Beijing 100191, China
| | - Cunyang Wang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China
| | - Nicholas Dunne
- Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Stokes Building, Collins Avenue, Dublin 9, Ireland
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China.
| | - Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China.
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Chumnanvej S, Luangwattanawilai T, Rawiwet V, Suwanprateeb J, Rattanapinyopituk K, Huaijantug S, Yinharnmingmongkol C, Hemstapat R. In vivo evaluation of bilayer ORC/PCL composites in a rabbit model for using as a dural substitute. Neurol Res 2020; 42:879-889. [PMID: 32657258 DOI: 10.1080/01616412.2020.1789383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE After a neurosurgical procedure, dural closure is commonly needed to prevent cerebrospinal fluids (CSF) leakage and to reduce the risk of complications, including infections and chronic inflammatory reactions. Although several dural substitutes have been developed, their manufacturing processes are complicated and costly and that many of them have been implicated in causing postoperative complications. This study aimed to assess the effectiveness and safety of new bilayer ORC/PCL composites in a rabbit model. METHODS Two formulations of bilayer oxidized regenerated cellulose (ORC)/poly ε-caprolactone (PCL) knitted fabric-reinforced composites and an autologous graft (pericranium) were employed for dural closure in forty-five male rabbits. Systemic reaction and the local reaction of the samples were assessed and compared at one-, three- and six-months post-implantation by blood chemistry and gross, and microscopic assessment using hematoxylin-eosin and Masson's trichrome stains. RESULTS No signs of CSF leakage or systemic infection were seen for all samples. All samples demonstrated minimal adhesion to adjacent tissues. The degree of host fibrous connective tissue ingrowth into both composites was comparable to that of the autologous group, but bone formation and osteoclast activities were significantly greater. Both composites progressively degraded over times and the residual thickness of the nonporous layer was 50% of the initial thickness at six months post-implantation. DISCUSSION Bilayer ORC/PCL composites were successfully employed for dural closure in the rabbit model. They were biocompatible and could support dural regeneration comparable to that of the autologous group, but induced greater osteogenesis.
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Affiliation(s)
- Sorayouth Chumnanvej
- Neurosurgery Unit, Surgery Department, Faculty of Medicine, Ramathibodi Hospital , Bangkok, Thailand
| | | | - Visut Rawiwet
- Central Animal Facility, Faculty of Science, Mahidol University (MUSC-CAF) , Bangkok, Thailand
| | - Jintamai Suwanprateeb
- Biofunctional Materials and Devices Research Group, National Metal and Materials Technology Center (MTEC) , Pathum Thani, Thailand
| | - Kasem Rattanapinyopituk
- Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University , Bangkok, Thailand
| | - Somkiat Huaijantug
- Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University , Nakhon Pathom, Thailand
| | - Chaowaphan Yinharnmingmongkol
- Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University , Nakhon Pathom, Thailand
| | - Ruedee Hemstapat
- Department of Pharmacology, Faculty of Science, Mahidol University , Bangkok, Thailand
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The Effect of Glycerol Concentration on Biocomposite Bacterial Cellulose-Chitosan Characterization as Dura Mater Artificial. JOURNAL OF BIOMIMETICS BIOMATERIALS AND BIOMEDICAL ENGINEERING 2020. [DOI: 10.4028/www.scientific.net/jbbbe.45.40] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bacterial cellulose and chitosan have been widely developed for biomaterial applications, one of which is used as a dura mater artificial. In designing dura mater artificial, there are several criteria that must be met, one of which is mechanical that can be seen through tensile strength and elongation value. In previous study, the mechanical properties of biocomposite bacterial cellulose-chitosan still too rigid and did not meet the standard. This research was conducted to determine the effect of the addition of glycerol concentration to the physical and biological of bacterial cellulose-chitosan membrane. Bacterial cellulose membranes with the addition of glycerol concentration of 0%; 0,25%; 0,5% and 0,75% were dried with oven and immersed for 6 hours in 0.5% chitosan solution. Characterization was performed by functional group, morphology, tensile strength, swelling, degradation and cytotoxicity test. Based on the results, it can conclude that biocomposite bacterial cellulose-chitosan-glycerol showed suitable characteristics as a dura mater artificial.
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21
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Foong CY, Wirzal MDH, Bustam MA. A review on nanofibers membrane with amino-based ionic liquid for heavy metal removal. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.111793] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Liu S, Zheng Y, Hu J, Wu Z, Chen H. Fabrication and characterization of polylactic acid/polycaprolactone composite macroporous micro-nanofiber scaffolds by phase separation. NEW J CHEM 2020. [DOI: 10.1039/d0nj03176c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
By using incompatible polymers, the preparation of scaffolds with a macroporous structure has overcome the use of porogens and carcinogenic solvents.
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Affiliation(s)
- Shuqiong Liu
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
- College of Ecology and Resource Engineering
| | - Yuying Zheng
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
| | - Jiapeng Hu
- College of Ecology and Resource Engineering
- Wuyi University
- Wuyishan 354300
- People's Republic of China
| | - Zhenzeng Wu
- College of Ecology and Resource Engineering
- Wuyi University
- Wuyishan 354300
- People's Republic of China
| | - Houwen Chen
- College of Ecology and Resource Engineering
- Wuyi University
- Wuyishan 354300
- People's Republic of China
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Electrospun chitosan/PVA/bioglass Nanofibrous membrane with spatially designed structure for accelerating chronic wound healing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110083. [DOI: 10.1016/j.msec.2019.110083] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 06/14/2019] [Accepted: 08/13/2019] [Indexed: 01/05/2023]
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Gao X, Han S, Zhang R, Liu G, Wu J. Progress in electrospun composite nanofibers: composition, performance and applications for tissue engineering. J Mater Chem B 2019; 7:7075-7089. [PMID: 31660575 DOI: 10.1039/c9tb01730e] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The discovery of novel methods to fabricate optimal scaffolds that mimic both mechanical and functional properties of the extracellular matrix (ECM) has always been the "holy grail" in tissue engineering. In recent years, electrospinning has emerged as an attractive material fabrication method and has been widely applied in tissue engineering due to its capability of producing non-woven and nanoscale fibers. However, from the perspective of biomimicry, it is difficult for single-component electrospun fiber membranes to achieve the biomimetic purposes of the multi-component extracellular matrix. Based on electrospinning, various functional components can be efficiently and expediently introduced into the membranes, and through the complementation and correlation of the properties of each component, composite materials with comprehensive and superior properties are obtained while maintaining the primitive merits of each component. In this review, we will provide an overview of the attempts made to fabricate electrospinning-based composite tissue engineering materials in the past few decades, which have been divided into organic additives, inorganic additives and organic-inorganic additives.
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Affiliation(s)
- Xize Gao
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, P. R. China.
| | - Shuyan Han
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, P. R. China.
| | - Ruhe Zhang
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, P. R. China.
| | - Guiting Liu
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, P. R. China.
| | - Jun Wu
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, P. R. China. and Research Institute of Sun Yat-Sen University in Shenzhen, Shenzhen, 518057, P. R. China
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Baek J, Lotz MK, D'Lima DD. Core-Shell Nanofibrous Scaffolds for Repair of Meniscus Tears. Tissue Eng Part A 2019; 25:1577-1590. [PMID: 30950316 DOI: 10.1089/ten.tea.2018.0319] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Electrospinning is an attractive method of fabricating nanofibers that replicate the ultrastructure of the human meniscus. However, it is challenging to approximate the mechanical properties of meniscal tissue while maintaining the biocompatibility of collagen fibers. Our objective was to determine if functionalizing polylactic acid (PLA) nanofibers with collagen would enhance their biocompatibility. We therefore used coaxial electrospinning to generate core-shell nanofibers with a core of PLA for mechanical strength and a shell of collagen to enhance cell attachment and matrix synthesis. We characterized the nanostructure of the engineered scaffolds and measured the hydrophilic and mechanical properties. We assessed the performance of human meniscal cells seeded on coaxial electrospun scaffolds to produce meniscal tissue by gene expression and histology. Finally, we investigated whether these cell-seeded scaffolds could repair surgical tears created ex vivo in avascular meniscal explants. Histology, immunohistochemistry, and mechanical testing of ex vivo repair provided evidence of neotissue that was significantly better integrated with the native tissue than with the acellular coaxial electrospun scaffolds. Human meniscal cell-seeded coaxial electrospun scaffolds may have potential in enhancing repair of avascular meniscus tears. Impact Statement The success of any tissue-engineered meniscus graft relies on its ability to mimic native three-dimensional microstructure, support cell growth, produce tissue-specific matrix, and enhance graft integration into the repair site. Polylactic acid scaffolds possess the desired mechanical properties, whereas collagen scaffolds induce better cell attachment and enhanced tissue regeneration. We therefore fabricated nanofibrous scaffolds that combined the properties of two biomaterials. These novel coaxial scaffolds more closely emulated the structure, mechanical properties, and biochemical composition of native meniscal tissue. Our findings of meniscogenic tissue generation and integration in meniscus defects have the potential to be translated to clinical use.
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Affiliation(s)
- Jihye Baek
- Shiley Center for Orthopedic Research and Education, Scripps Clinic, La Jolla, California.,Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California
| | - Martin K Lotz
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California
| | - Darryl D D'Lima
- Shiley Center for Orthopedic Research and Education, Scripps Clinic, La Jolla, California.,Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California
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26
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Ding J, Zhang J, Li J, Li D, Xiao C, Xiao H, Yang H, Zhuang X, Chen X. Electrospun polymer biomaterials. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2019.01.002] [Citation(s) in RCA: 217] [Impact Index Per Article: 43.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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27
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Li Q, Zhang F, Wang H, Pan T. Preparation and characterization of a novel acellular swim bladder as dura mater substitute. Neurol Res 2019; 41:242-249. [PMID: 30912483 DOI: 10.1080/01616412.2018.1550139] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVES This paper aimed to develop a novel dura mater substitute made from swim bladders. METHODS The swim bladders were decellularized by diverse methods. The physical structure, residual DNA amount, mechanical properties and hemolysis rate were tested. The in vitro mouse embryonic fibroblast cells (MEFs) co-culture and in vivo dural repair surgery were performed to evaluate the biocompatibility of acellular swim bladder (ASBs). RESULTS The characteristics of different ASBs were evaluated, and the materials prepared via 'freezing-thawing and DNase-I' method showed the most appropriate features as dura mater substitute. The loosen fiber layer structure and three-dimensional porous structure were formed after decellularization. The residual DNA content was low (9.2 ± 2.0 ng/mg) and the mechanical properties could meet the clinical requirement (the maximum tensile strength was 34.77 ± 4.28 N and the maximum stitch tear strength was 7.15 ± 1.84 N). The hemolysis rate was up to 2.8 ± 0.15%. In the MEFs co-culture test, ASBs could support the adhesion, migration and proliferation of cells. The dural repair experiment demonstrated ASBs could prevent the leak of cerebrospinal fluid, and the materials were gradually replaced by autologous connective tissue. The novel dura mater substitute improved dura repair and regeneration without causing adhesion or severe inflammation. DISCUSSION The ASBs prepared via 'freezing-thawing and DNase-I' method had the ideal physical and biological properties as a dura mater substitute for clinical application.
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Affiliation(s)
- Qing Li
- a Qingdao Chunghao Tissue Engineering Co,LTD , Qingdao , Shandong Province , China
| | - Fenghua Zhang
- a Qingdao Chunghao Tissue Engineering Co,LTD , Qingdao , Shandong Province , China
| | - Hongmei Wang
- a Qingdao Chunghao Tissue Engineering Co,LTD , Qingdao , Shandong Province , China
| | - Tao Pan
- a Qingdao Chunghao Tissue Engineering Co,LTD , Qingdao , Shandong Province , China
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Castillejos S, Cerna J, Meléndez F, Castro ME, Aguilar R, Márquez-Beltrán C, González M. Bulk Modification of Poly(lactide) (PLA) via Copolymerization with Poly(propylene glycol) Diglycidylether (PPGDGE). Polymers (Basel) 2018; 10:polym10111184. [PMID: 30961109 PMCID: PMC6290617 DOI: 10.3390/polym10111184] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 10/15/2018] [Accepted: 10/18/2018] [Indexed: 11/05/2022] Open
Abstract
Copolymers of l-lactide and poly(propylene glycol) diglycidyl ether (PPGDGE380) were synthesized by ring opening polymerization (ROP). Stannous octoate was used as the catalyst and 1-dodecanol as the initiator. The effect of the variables on the thermal properties of the copolymers was investigated by differential scanning calorimetry (DSC). Contact angle measurements were made in order to study the wettability of the synthesized copolymers. The copolymers differed widely in their physical characteristics, ranging from weak elastomers to tougher thermoplastics, according to the ratio of l-lactide and PPGDGE380. The results showed that the copolymers were more hydrophilic than neat Poly(lactide) (PLA) and the monomer ratio had a strong influence on the hydrophilic properties.
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Affiliation(s)
- Sandra Castillejos
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - Jorge Cerna
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - Francisco Meléndez
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - María Eugenia Castro
- Instituto de Ciencias de la Universidad Autónoma de Puebla, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - Rocío Aguilar
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - César Márquez-Beltrán
- Instituto de Física, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla 72570, Mexico.
| | - Maykel González
- Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Campus Puebla, Puebla 72453, Mexico.
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Zhang C, Zhai T, Turng LS. Electrospinning of poly(lactic acid)/polycaprolactone blends: investigation of the governing parameters and biocompatibility. JOURNAL OF POLYMER ENGINEERING 2018. [DOI: 10.1515/polyeng-2017-0194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractBlends of poly(lactic acid)/polycaprolactone (PLA/PCL) were electrospun under various conditions to study the influence of solution concentration, feed rate and voltage supply on the morphology of the nanofibers. To improve compatibility and to help produce fine electrospun nanofibers, an L-lactide/caprolactone (LACL) copolymer was introduced as a compatibilizer in the PLA/PCL blends. It was found that the solution concentration was a principal governing factor. The mean diameter of the fibers increased with the solution concentration, feed rate and voltage. Too high of a concentration and feed rate caused the fibers to stick to each other. A slow feed rate, 10% solution concentration, and 20 kV voltage were capable of producing thin, smooth and uniform fibers. Preliminary biocompatibility assays of the nanofibers were conducted with NIH 3T3 cells. The cells grown on the nanofiber blend exhibited spindle-like morphologies. The addition of PCL and LACL copolymer was found to improve the biocompatibility of PLA nanofibers, suggesting their potential application as cell culture scaffolds.
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A novel fish collagen scaffold as dural substitute. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:346-351. [DOI: 10.1016/j.msec.2017.05.102] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/11/2017] [Accepted: 05/15/2017] [Indexed: 11/18/2022]
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31
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Preparation, characterization and hydrolytic degradation of PLA/PCL co-mingled nanofibrous mats prepared via dual-jet electrospinning. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.09.016] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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32
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Wu W, Cheng R, das Neves J, Tang J, Xiao J, Ni Q, Liu X, Pan G, Li D, Cui W, Sarmento B. Advances in biomaterials for preventing tissue adhesion. J Control Release 2017; 261:318-336. [DOI: 10.1016/j.jconrel.2017.06.020] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 06/19/2017] [Accepted: 06/20/2017] [Indexed: 10/19/2022]
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33
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Xu Y, Cui W, Zhang Y, Zhou P, Gu Y, Shen X, Li B, Chen L. Hierarchical Micro/Nanofibrous Bioscaffolds for Structural Tissue Regeneration. Adv Healthc Mater 2017; 6. [PMID: 28407447 DOI: 10.1002/adhm.201601457] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/27/2017] [Indexed: 01/26/2023]
Abstract
Various biomimetic scaffolds with hierarchical micro/nanostructures are designed to closely mimic native extracellular matrix network and to guide cell behavior to promote structural tissue generation. However, it remains a challenge to fabricate hierarchical micro/nanoscaled fibrous scaffolds with different functional components that endow the scaffolds with both biochemical and physical features to exert different biological roles during the process of tissue healing. In this study, a biomimetic designed micro/nanoscaled scaffold with integrated hierarchical dual fibrillar components is fabricated in order to repair dura mater and prevent the formation of epidural scars via collagen molecule self-assembly, electrospinning, and biological interface crosslinking strategies. The fabricated biomimetic scaffolds display micro/nanofibers staggered hierarchical architecture with good mechanical properties and biocompatibility, and it has a more profound effect on attachment, proliferation, and differentiation of fibroblasts. Using a rabbit duraplasty model in vivo, the authors find that dural defects repaired with hierarchical micro/nanoscaled scaffold form a continuous neodura tissue similar to native dura mater; furthermore, the number of scar tissues decreases significantly in the laminectomy sites compared with conventional electrospun microfibrous scaffold. Taken together, these data suggest that the hierarchical micro/nanoscaled fibrous scaffolds with dual fibrillar components may act as a "true" dural substitutes for dual repair.
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Affiliation(s)
- Yun Xu
- Department of Orthopaedic Surgery; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 P. R. China
| | - Wenguo Cui
- Orthopaedic Institute; Soochow University; Suzhou Jiangsu 215007 P. R. China
| | - Yanxia Zhang
- Institute of Cardiovascular Science and Department of Cardiovascular Surgery of the First Affiliated Hospital; Soochow University; Suzhou Jiangsu 215007 P. R. China
| | - Pinghui Zhou
- Orthopaedic Institute; Soochow University; Suzhou Jiangsu 215007 P. R. China
| | - Yong Gu
- Department of Orthopaedic Surgery; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 P. R. China
| | - Xiaofeng Shen
- Department of Orthopaedic Surgery; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 P. R. China
| | - Bin Li
- Orthopaedic Institute; Soochow University; Suzhou Jiangsu 215007 P. R. China
| | - Liang Chen
- Department of Orthopaedic Surgery; The First Affiliated Hospital of Soochow University; Suzhou Jiangsu 215006 P. R. China
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Stewart DC, Rubiano A, Dyson K, Simmons CS. Mechanical characterization of human brain tumors from patients and comparison to potential surgical phantoms. PLoS One 2017; 12:e0177561. [PMID: 28582392 PMCID: PMC5459328 DOI: 10.1371/journal.pone.0177561] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/28/2017] [Indexed: 11/30/2022] Open
Abstract
While mechanical properties of the brain have been investigated thoroughly, the mechanical properties of human brain tumors rarely have been directly quantified due to the complexities of acquiring human tissue. Quantifying the mechanical properties of brain tumors is a necessary prerequisite, though, to identify appropriate materials for surgical tool testing and to define target parameters for cell biology and tissue engineering applications. Since characterization methods vary widely for soft biological and synthetic materials, here, we have developed a characterization method compatible with abnormally shaped human brain tumors, mouse tumors, animal tissue and common hydrogels, which enables direct comparison among samples. Samples were tested using a custom-built millimeter-scale indenter, and resulting force-displacement data is analyzed to quantify the steady-state modulus of each sample. We have directly quantified the quasi-static mechanical properties of human brain tumors with effective moduli ranging from 0.17–16.06 kPa for various pathologies. Of the readily available and inexpensive animal tissues tested, chicken liver (steady-state modulus 0.44 ± 0.13 kPa) has similar mechanical properties to normal human brain tissue while chicken crassus gizzard muscle (steady-state modulus 3.00 ± 0.65 kPa) has similar mechanical properties to human brain tumors. Other materials frequently used to mimic brain tissue in mechanical tests, like ballistic gel and chicken breast, were found to be significantly stiffer than both normal and diseased brain tissue. We have directly compared quasi-static properties of brain tissue, brain tumors, and common mechanical surrogates, though additional tests would be required to determine more complex constitutive models.
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Affiliation(s)
- Daniel C. Stewart
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida, United States of America
| | - Andrés Rubiano
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida, United States of America
| | - Kyle Dyson
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, Florida, United States of America
| | - Chelsey S. Simmons
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida, United States of America
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida, United States of America
- Division of Cardiovascular Medicine, University of Florida, Gainesville, Florida, United States of America
- * E-mail:
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A simply prepared small-diameter artificial blood vessel that promotes in situ endothelialization. Acta Biomater 2017; 54:107-116. [PMID: 28238915 DOI: 10.1016/j.actbio.2017.02.038] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 02/20/2017] [Accepted: 02/21/2017] [Indexed: 01/04/2023]
Abstract
Synthetic grafts are of limited use in small-diameter vessels (Φ<6mm) due to the poor patency rate. The inability of such grafts to achieve early endothelialization together with the compliance mismatch between the grafts and the native vessels promote thrombosis, which eventually leads to graft occlusion. In the current study, stromal cell-derived factor (SDF)-1α/vascular endothelial growth factor (VEGF)-loaded polyurethane (PU) conduits were simply prepared via electrospinning. The mechanical property, drug release behavior and cytocompatibility of the conduits were investigated. The effects of the conduits on endothelial progenitor cell (EPC) mobilization and differentiation were examined in vitro. Then, the conduits were implanted as canine femoral artery interposition grafts. The results revealed that SDF-1α and VEGF were quickly released shortly after implantation, and the conduits exhibited slow and sustained release thereafter. The cytokines had definite effects on EPC mobilization and differentiation in vitro and promoted conduit endothelialization in vivo. The conduits had good tissue compatibility and favorable compliance. All of these features inhibited the conduits from being occluded, thereby improving their long-term patency rate. At 6th month postoperatively, 5 of the 8 grafts were patent while all the 8 grafts without the cytokines were occluded. These findings provide a simple and effective method for the construction of small-diameter artificial blood vessels with the aim of facilitating early endothelialization and improving long-term patency. STATEMENT OF SIGNIFICANCE: (1) SDF-1α/VEGF loaded PU conduits were simply prepared by electrospinning. The cytokines with definite and potent effects on angiogenesis were used to avoid complicated mechanism researches. Compared with most of the current vascular grafts which are of poor strength or elasticity, the conduits have favorable mechanical property. All of these inhibit the conduits from occlusion, and thus improve their long-term patency rate. (2) For the in vivo tests, the dogs did not receive any anticoagulant medication in the follow-up period to expose the grafts to the strictest conditions. In vivo endothelialization of the conduits was thoroughly investigated by Sonography, HE staining, SEM and LSCM. The study will be helpful for the construction of small-diameter artificial blood vessels.
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36
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Development of polymeric functionally graded scaffolds: a brief review. J Appl Biomater Funct Mater 2017; 15:e107-e121. [PMID: 28009418 DOI: 10.5301/jabfm.5000332] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2016] [Indexed: 12/20/2022] Open
Abstract
Over recent years, there has been a growing interest in multilayer scaffolds fabrication approaches. In fact, functionally graded scaffolds (FGSs) provide biological and mechanical functions potentially similar to those of native tissues. Based on the final application of the scaffold, there are different properties (physical, mechanical, biochemical, etc.) which need to gradually change in space. Therefore, a number of different technologies have been investigated, and often combined, to customize each region of the scaffolds as much as possible, aiming at achieving the best regenerative performance.In general, FGSs can be categorized as bilayered or multilayered, depending on the number of layers in the whole structure. In other cases, scaffolds are characterized by a continuous gradient of 1 or more specific properties that cannot be related to the presence of clearly distinguished layers. Since each traditional approach presents peculiar advantages and disadvantages, FGSs are good candidates to overcome the limitations of current treatment options. In contrast to the reviews reported in the literature, which usually focus on the application of FGS, this brief review provides an overview of the most common strategies adopted to prepare FGS.
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37
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Darie-Niţă RN, Munteanu BS, Tudorachi N, Lipşa R, Stoleru E, Spiridon I, Vasile C. Complex poly(lactic acid)-based biomaterial for urinary catheters: I. Influence of AgNP on properties. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2016. [DOI: 10.1680/jbibn.15.00011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The present study focused on the development of biocompatible antimicrobial/antioxidant biodegradable bionanocomposite renewable resources based on poly(lactic acid) (PLA) plasticised with epoxidised soybean oil. To the main PLA matrix hydrolysed collagen (HC) (to enhance biocompatibility), vitamin E (as antioxidant agent) and silver (Ag) nanoparticles (NPs) (for imparting antimicrobial properties for medical applications and also for active packaging) were incorporated. The blends were produced by using the classical technological flow of melt processing. The presence of the additives in the PLA matrix improved the processability and flexibility and slightly decreased the thermal properties. The specific interactions of silver NPs with the other components of nanocomposites, mainly with HC protein and vitamin E (by ionic and other types of secondary bonds), led to a better HC and vitamin E dispersion in the samples with a higher silver content (1·5%), which further caused the enhancement of the mechanical properties for high silver NP concentration. Therefore, the silver NPs were successfully embedded into the polymer matrix. The aim of this research was to improve the flexibility, biocompatibility and functionality of PLA and to obtain bionanocomposites destined for medical applications such as catheters. This first part of research deals with mechanical and thermal characterisation correlated with morphological features.
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Affiliation(s)
| | | | - Niţă Tudorachi
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | - Rodica Lipşa
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | - Elena Stoleru
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | - Iuliana Spiridon
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
| | - Cornelia Vasile
- ‘Petru Poni’ Institute of Macromolecular Chemistry, Iași, Romania
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Kim W, Lee H, Kim Y, Choi CH, Lee D, Hwang H, Kim G. Versatile design of hydrogel-based scaffolds with manipulated pore structure for hard-tissue regeneration. Biomed Mater 2016; 11:055002. [DOI: 10.1088/1748-6041/11/5/055002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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39
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Hapach LA, VanderBurgh JA, Miller JP, Reinhart-King CA. Manipulation of in vitro collagen matrix architecture for scaffolds of improved physiological relevance. Phys Biol 2015; 12:061002. [PMID: 26689380 DOI: 10.1088/1478-3975/12/6/061002] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Type I collagen is a versatile biomaterial that is widely used in medical applications due to its weak antigenicity, robust biocompatibility, and its ability to be modified for a wide array of applications. As such, collagen has become a major component of many tissue engineering scaffolds, drug delivery platforms, and substrates for in vitro cell culture. In these applications, collagen constructs are fabricated to recapitulate a diverse set of conditions. Collagen fibrils can be aligned during or post-fabrication, cross-linked via numerous techniques, polymerized to create various fibril sizes and densities, and copolymerized into a wide array of composite scaffolds. Here, we review approaches that have been used to tune collagen to better recapitulate physiological environments for use in tissue engineering applications and studies of basic cell behavior. We discuss techniques to control fibril alignment, methods for cross-linking collagen constructs to modulate stiffness, and composite collagen constructs to better mimic physiological extracellular matrix.
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Shi Z, Xu T, Yuan Y, Deng K, Liu M, Ke Y, Luo C, Yuan T, Ayyad A. A New Absorbable Synthetic Substitute With Biomimetic Design for Dural Tissue Repair. Artif Organs 2015; 40:403-13. [PMID: 26526152 DOI: 10.1111/aor.12568] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhidong Shi
- Department of Neurosurgery; Third Affiliated Hospital; Sun Yat-sen University; Guangzhou China
| | - Tao Xu
- Bio-Manufacturing Center; Department of Mechanical Engineering; Tsinghua University; Beijing China
| | - Yuyu Yuan
- School of Bioscience & Bioengineering; South China University of Technology; Guangzhou China
| | - Kunxue Deng
- Bio-Manufacturing Center; Department of Mechanical Engineering; Tsinghua University; Beijing China
| | - Man Liu
- School of Bioscience & Bioengineering; South China University of Technology; Guangzhou China
| | - Yiquan Ke
- Department of Neurosurgery; Zhujiang Hospital; South Medical University; Guangzhou China
| | - Chengyi Luo
- Department of Neurosurgery; Zhujiang Hospital; South Medical University; Guangzhou China
| | - Tun Yuan
- National Engineering Research Center for Biomaterials; Sichuan University; Chengdu China
| | - Ali Ayyad
- Department of Neurosurgery; University Medical Centre Mainz; Johannes Gutenberg University of Mainz; Mainz Germany
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41
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Zhao X, Luo J, Fang C, Xiong J. Investigation of polylactide/poly(ε-caprolactone)/multi-walled carbon nanotubes electrospun nanofibers with surface texture. RSC Adv 2015. [DOI: 10.1039/c5ra14301b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The surface texture of PLA/PCL nanofibers was caused by the formation of voids and elongation in electric field. The MWCNTs reduced the sizes of PCL phase in PLA matrix.
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Affiliation(s)
- Xingyan Zhao
- College of Materials and Textile
- Zhejiang Sci-Tech University
- Hangzhou 310018
- P. R. China
| | - Jingjing Luo
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (Ministry of Education)
- Zhejiang Sci-Tech University
- Hangzhou 310018
- P. R. China
- College of Life Sciences
| | - Changjiang Fang
- College of Materials and Textile
- Zhejiang Sci-Tech University
- Hangzhou 310018
- P. R. China
| | - Jie Xiong
- College of Materials and Textile
- Zhejiang Sci-Tech University
- Hangzhou 310018
- P. R. China
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (Ministry of Education)
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42
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Liao CJ, Wang WH, Liang HC, Su YC, Hsu PC, Wang YM, Tsai YH, Chen Y, Tseng SH. A NOVEL FOAMY COLLAGEN AS A DURAL SUBSTITUTE. BIOMEDICAL ENGINEERING-APPLICATIONS BASIS COMMUNICATIONS 2014. [DOI: 10.4015/s1016237214500665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This study developed an innovative foamy collagen dural substitute. The foamy collagen was prepared by mixing collagen hydrogel and high-pressure oxygen in a stainless steel bottle as a container. A foamy collagen with 101 ± 43 μm in pore size and 50.5 ± 5.1% in porosity formed after release from the container. In the results of the in vitro degradation experiment, foamy collagen degraded slower than the commercially available DuraGen treated with 5 units/mL of collagenase solution. DuraGen degraded completely within three hours and foamy collagen had 39.2% (mean) of its original mass remaining 24 h after immersing in collagenase solution. The oxygen bubble structure was immobilized by the collagen fibrillogenesis and remained intact 3 and 7 days after subcutaneous implantation of the foamy collagen in rats, without any escape or merge of the oxygen bubbles. Fibrous tissue proliferated along the porous structure from the edge of the foamy collagen according to the histology analysis of subcutaneous implantation experiment in rats. The results of in vivo rabbit duraplasty experiment showed that the regenerated dura in foamy collagen group was thicker than that in DuraGen group, and was comparable to the native dura mater, without causing any adverse effects, such as intracranial pressure increase or cerebrospinal fluid leakage.
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Affiliation(s)
| | | | | | - Yi-Chun Su
- Taiwan Biomaterial Company Limited, Taiwan
| | | | | | - Yi-Hsin Tsai
- Department of Surgery, Far Eastern Memorial Hospital, Taiwan
| | - Yun Chen
- Department of Surgery, Far Eastern Memorial Hospital, Taiwan
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taiwan
| | - Sheng-Hong Tseng
- Department of Surgery, National Taiwan University Hospital, Taiwan
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43
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Senturk-Ozer S, Chen T, Degirmenbasi N, Gevgilili H, Podkolzin SG, Kalyon DM. A nanobursa mesh: a graded electrospun nanofiber mesh with metal nanoparticles on carbon nanotubes. NANOSCALE 2014; 6:8527-8530. [PMID: 24958514 DOI: 10.1039/c4nr01145g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new type of material, a "nanobursa" mesh (from "bursa" meaning "sac or pouch"), is introduced. This material consists of sequential layers of porous polymeric nanofibers encapsulating carbon nanotubes, which are functionalized with different metal nanoparticles in each layer. The nanobursa mesh is fabricated via a novel combination of twin-screw extrusion and electrospinning. Use of this hybrid process at industrially-relevant rates is demonstrated by producing a nanobursa mesh with graded layers of Pd, Co, Ag, and Pt nanoparticles. The potential use of the fabricated nanobursa mesh is illustrated by modeling of catalytic hydrocarbon oxidation.
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Affiliation(s)
- Semra Senturk-Ozer
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, USA.
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44
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Kim HS, Yoo HS. Therapeutic application of electrospun nanofibrous meshes. Nanomedicine (Lond) 2014; 9:517-33. [DOI: 10.2217/nnm.13.224] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Fabricating tissue architecture-mimicking scaffolds is one of the major challenges in the field of tissue engineering. Electrospun nanofibers have been considered as potent techniques for fabricating fibrous scaffolds biomimicking extracellular frameworks. Therapeutic agent-incorporated nanofibrous meshes have widely served as excellent substrates for adhesion, proliferation and differentiation. Many drugs, proteins and nucleic acids were incorporated into the scaffolds for regeneration of skin, musculoskeletal, neural and vascular tissue engineering in aims to control the release of the therapeutic agents. In the current article, we focus on introducing various fabrication techniques for electrospun nanofiber-based scaffolds and subsequent functionalization of nanofibers for therapeutic purposes. We also detail how the therapeutic nanofibrous meshes can be employed in the field of tissue engineering.
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Affiliation(s)
- Hye Sung Kim
- Department of Biomedical Materials Engineering, School of Bioscience & Bioengineering, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Hyuk Sang Yoo
- Department of Biomedical Materials Engineering, School of Bioscience & Bioengineering, Kangwon National University, Chuncheon 200-701, Republic of Korea
- Institute of Bioscience & Biotechnology, Kangwon National University, Republic of Korea
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