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Maduka CV, Makela AV, Tundo A, Ural E, Stivers KB, Kuhnert MM, Alhaj M, Hoque Apu E, Ashammakhi N, Hankenson KD, Narayan R, Elisseeff JH, Contag CH. Regulating the proinflammatory response to composite biomaterials by targeting immunometabolism. Bioact Mater 2024; 40:64-73. [PMID: 38948254 PMCID: PMC11214186 DOI: 10.1016/j.bioactmat.2024.05.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 05/03/2024] [Accepted: 05/30/2024] [Indexed: 07/02/2024] Open
Abstract
Composite biomaterials comprising polylactide (PLA) and hydroxyapatite (HA) are applied in bone, cartilage and dental regenerative medicine, where HA confers osteoconductive properties. However, after surgical implantation, adverse immune responses to these composites can occur, which have been attributed to size and morphology of HA particles. Approaches to effectively modulate these adverse immune responses have not been described. PLA degradation products have been shown to alter immune cell metabolism (immunometabolism), which drives the inflammatory response. Accordingly, to modulate the inflammatory response to composite biomaterials, inhibitors were incorporated into composites comprised of amorphous PLA (aPLA) and HA (aPLA + HA) to regulate glycolytic flux. Inhibition at specific steps in glycolysis reduced proinflammatory (CD86+CD206-) and increased pro-regenerative (CD206+) immune cell populations around implanted aPLA + HA. Notably, neutrophil and dendritic cell (DC) numbers along with proinflammatory monocyte and macrophage populations were decreased, and Arginase 1 expression among DCs was increased. Targeting immunometabolism to control the proinflammatory response to biomaterial composites, thereby creating a pro-regenerative microenvironment, is a significant advance in tissue engineering where immunomodulation enhances osseointegration and angiogenesis, which could lead to improved bone regeneration.
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Affiliation(s)
- Chima V. Maduka
- Comparative Medicine & Integrative Biology, Michigan State University, East Lansing, MI, 48824, USA
- Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, 48824, USA
- Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI, 48824, USA
| | - Ashley V. Makela
- Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, 48824, USA
- Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI, 48824, USA
| | - Anthony Tundo
- Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, 48824, USA
- Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI, 48824, USA
| | - Evran Ural
- Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, 48824, USA
- Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI, 48824, USA
| | - Katlin B. Stivers
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
| | - Maxwell M. Kuhnert
- Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, 48824, USA
- Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI, 48824, USA
| | - Mohammed Alhaj
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing, MI, 48824, USA
| | - Ehsanul Hoque Apu
- Department of Biomedical Sciences, College of Dental Medicine, Lincoln Memorial University, Knoxville, TN, 37917, USA
| | - Nureddin Ashammakhi
- Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, 48824, USA
- Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI, 48824, USA
| | - Kurt D. Hankenson
- Department of Orthopedic Surgery, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Ramani Narayan
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing, MI, 48824, USA
| | - Jennifer H. Elisseeff
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
| | - Christopher H. Contag
- Department of Biomedical Engineering, College of Engineering, Michigan State University, East Lansing, MI, 48824, USA
- Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI, 48824, USA
- Department of Microbiology, Genetics & Immunology, Michigan State University, East Lansing, MI, 48864, USA
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Bogaert S, Cuylits N, Drossos K, Lejeune A, Tooulou M, Chahidi N. Primary trapeziectomy with Regjoint(TM), a poly-L/D-lactide spacer, a two-year follow-up study with new radiological assessment tool. Acta Orthop Belg 2023; 89:257-264. [PMID: 37924543 DOI: 10.52628/89.2.9448] [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: 11/06/2023]
Abstract
The aim of this retrospective study was to evaluate the potential bony erosion and the clinical and radiological results of primary trapeziectomy with RegjointTM interposition, in patients with peritrapezial arthritis. Data were recorded on twenty patients over a period of two years (January 2015-December 2016). On average 24 months, patients were reconvened for a post-operative evaluation (subjective evaluation of pain, function and patient satisfaction; clinical evaluation with strength and mobility measures; post-operative X-rays). On X-rays, 2 criteria were evaluated: the bony erosion and the shortening of the thumb column (trapezium+metacarpal height measure, ratio between first and second metacarpal bones, a new radiological assessment tool based on a trapezoid relationship gradation). In most patients, surgery relieved pain and offered good functional results, according to the Quick Disabilities of the Arm, Shoulder and Hand scale. Following surgery, our patients showed a subjective improvement, both in terms of pain and functional results. For plain X-ray, only 3 patients showed an osteolytic lesion (maximum of 2.8 millimeters) on the first metacarpal base. A statistically significant reduction in the thumb column height was generally observed on follow-up X-rays. However, all of these radiologic changes were present without any clinical impact. We show that the RegjointTM spacer is an available alternative in the surgical treatment of peritrapezial arthritis. We did not highlight any significant associated complications, no important adverse tissue reaction or bone erosion, no pain or functional disorder. Type of study/level of evidence Therapeutic IV.
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Sordi MB, da Cruz ACC, Aragones Á, Cordeiro MMR, de Souza Magini R. PLGA+HA/βTCP Scaffold Incorporating Simvastatin: A Promising Biomaterial for Bone Tissue Engineering. J ORAL IMPLANTOL 2021; 47:93-101. [PMID: 32699891 DOI: 10.1563/aaid-joi-d-19-00148] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to synthesize, characterize, and evaluate degradation and biocompatibility of poly(lactic-co-glycolic acid) + hydroxyapatite/β-tricalcium phosphate (PLGA+HA/βTCP) scaffolds incorporating simvastatin (SIM) to verify if this biomaterial might be promising for bone tissue engineering. Samples were obtained by the solvent evaporation technique. Biphasic ceramic particles (70% HA, 30% βTCP) were added to PLGA in a ratio of 1:1. Samples with SIM received 1% (m/m) of this medication. Scaffolds were synthesized in a cylindric shape and sterilized by ethylene oxide. For degradation analysis, samples were immersed in phosphate-buffered saline at 37°C under constant stirring for 7, 14, 21, and 28 days. Nondegraded samples were taken as reference. Mass variation, scanning electron microscopy, porosity analysis, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetry were performed to evaluate physico-chemical properties. Wettability and cytotoxicity tests were conducted to evaluate the biocompatibility. Microscopic images revealed the presence of macro-, meso-, and micropores in the polymer structure with HA/βTCP particles homogeneously dispersed. Chemical and thermal analyses presented similar results for both PLGA+HA/βTCP and PLGA+HA/βTCP+SIM. The incorporation of simvastatin improved the hydrophilicity of scaffolds. Additionally, PLGA+HA/βTCP and PLGA+HA/βTCP+SIM scaffolds were biocompatible for osteoblasts and mesenchymal stem cells. In summary, PLGA+HA/βTCP scaffolds incorporating simvastatin presented adequate structural, chemical, thermal, and biological properties for bone tissue engineering.
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Affiliation(s)
- Mariane Beatriz Sordi
- Center for Research on Dental Implants, Department of Dentistry, Federal University of Santa Catarina, Santa Catarina, Brazil
| | | | - Águedo Aragones
- Ceramic & Composite Materials Research Laboratories, Department of Mechanical Engineering, Federal University of Santa Catarina, Santa Catarina, Brazil
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Darabi MA, Khosrozadeh A, Wang Y, Ashammakhi N, Alem H, Erdem A, Chang Q, Xu K, Liu Y, Luo G, Khademhosseini A, Xing M. An Alkaline Based Method for Generating Crystalline, Strong, and Shape Memory Polyvinyl Alcohol Biomaterials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1902740. [PMID: 33173720 PMCID: PMC7610272 DOI: 10.1002/advs.201902740] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 01/28/2020] [Accepted: 02/27/2020] [Indexed: 05/25/2023]
Abstract
Strong, stretchable, and durable biomaterials with shape memory properties can be useful in different biomedical devices, tissue engineering, and soft robotics. However, it is challenging to combine these features. Semi-crystalline polyvinyl alcohol (PVA) has been used to make hydrogels by conventional methods such as freeze-thaw and chemical crosslinking, but it is formidable to produce strong materials with adjustable properties. Herein, a method to induce crystallinity and produce physically crosslinked PVA hydrogels via applying high-concentration sodium hydroxide into dense PVA polymer is introduced. Such a strategy enables the production of physically crosslinked PVA biomaterial with high mechanical properties, low water content, resistance to injury, and shape memory properties. It is also found that the developed PVA hydrogel can recover 90% of plastic deformation due to extension upon supplying water, providing a strong contraction force sufficiently to lift objects 1100 times more than their weight. Cytocompatibility, antifouling property, hemocompatibility, and biocompatibility are also demonstrated in vitro and in vivo. The fabrication methods of PVA-based catheters, injectable electronics, and microfluidic devices are demonstrated. This gelation approach enables both layer-by-layer and 3D printing fabrications.
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Affiliation(s)
- Mohammad Ali Darabi
- Center for Minimally Invasive Therapeutics (C‐MIT)University of CaliforniaLos AngelesCA90095USA
- Department of BioengineeringUniversity of CaliforniaLos AngelesCA90095USA
- Department of Radiological SciencesDavid Geffen School of MedicineUniversity of CaliforniaLos AngelesCA90095USA
- Department of Mechanical EngineeringUniversity of ManitobaWinnipegR3T 5V6Canada
- Terasaki Institute for Biomedical InnovationLos AngelesCA90024USA
| | - Ali Khosrozadeh
- Department of Mechanical EngineeringUniversity of ManitobaWinnipegR3T 5V6Canada
- Department of Physical & Environmental SciencesUniversity of Toronto ScarboroughTorontoOntarioM1C 1A4Canada
| | - Ying Wang
- Institute of Burn ResearchState Key Lab of Trauma Burns and Combined InjurySouthwest HospitalThird Military Medical UniversityChongqing400038China
| | - Nureddin Ashammakhi
- Center for Minimally Invasive Therapeutics (C‐MIT)University of CaliforniaLos AngelesCA90095USA
- Department of BioengineeringUniversity of CaliforniaLos AngelesCA90095USA
- Department of Radiological SciencesDavid Geffen School of MedicineUniversity of CaliforniaLos AngelesCA90095USA
| | - Halima Alem
- Center for Minimally Invasive Therapeutics (C‐MIT)University of CaliforniaLos AngelesCA90095USA
- Department of BioengineeringUniversity of CaliforniaLos AngelesCA90095USA
- Université de LorraineCNRSInstitut Jean Lamour (UMR 7198)Campus Artem 2 allée André Guinier‐BP 50840Nancy CedexF54011France
| | - Ahmet Erdem
- Center for Minimally Invasive Therapeutics (C‐MIT)University of CaliforniaLos AngelesCA90095USA
- Department of BioengineeringUniversity of CaliforniaLos AngelesCA90095USA
- Department of ChemistryKocaeli UniversityUmuttepe CampusKocaeli41380Turkey
- Department of Biomedical EngineeringKocaeli UniversityUmuttepe CampusKocaeli41380Turkey
| | - Qiang Chang
- Department of Mechanical EngineeringUniversity of ManitobaWinnipegR3T 5V6Canada
| | - Kaige Xu
- Department of Mechanical EngineeringUniversity of ManitobaWinnipegR3T 5V6Canada
| | - Yuqing Liu
- Department of Mechanical EngineeringUniversity of ManitobaWinnipegR3T 5V6Canada
| | - Gaoxing Luo
- Institute of Burn ResearchState Key Lab of Trauma Burns and Combined InjurySouthwest HospitalThird Military Medical UniversityChongqing400038China
| | - Ali Khademhosseini
- Center for Minimally Invasive Therapeutics (C‐MIT)University of CaliforniaLos AngelesCA90095USA
- Department of BioengineeringUniversity of CaliforniaLos AngelesCA90095USA
- Department of Radiological SciencesDavid Geffen School of MedicineUniversity of CaliforniaLos AngelesCA90095USA
- Terasaki Institute for Biomedical InnovationLos AngelesCA90024USA
- Department of Chemical EngineeringUniversity of CaliforniaLos AngelesCAUSA
| | - Malcolm Xing
- Department of Mechanical EngineeringUniversity of ManitobaWinnipegR3T 5V6Canada
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Mattila S, Haapamäki V, Waris E. Unfavourable early outcomes of total trapeziectomy with RegJoint™ interposition: a report of 38 osteoarthritic hands in 34 patients. J Hand Surg Eur Vol 2020; 45:167-172. [PMID: 31722641 DOI: 10.1177/1753193419885272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
This retrospective study analysed the results of total trapeziectomy with RegJoint™ interposition in 38 osteoarthritic hands in 34 patients. Patients were evaluated preoperatively, at follow-up visits, and at a mean final follow-up of 33 months (range 20-53) with plain radiographs, computed tomography, as well as with subjective and objective evaluations. Pain decreased and subjective outcomes and function improved significantly. Computed tomography 18 months after operation showed osteolysis in 24 cases. Three patients developed wrist pain 12-18 months after operation with MRI findings of a foreign-body reaction in each case. One of these patients was scheduled for revision surgery. Although the clinical results were satisfactory, the risk of foreign-body reaction and osteolysis is noteworthy. We conclude that the use of RegJoint™ should be reconsidered since the implant probably offers no benefit in the treatment of trapeziometacarpal osteoarthritis. Level of evidence: IV.
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Affiliation(s)
- Simo Mattila
- Department of Hand Surgery, Helsinki University Hospital, Helsinki, Finland
| | - Ville Haapamäki
- HUS Medical Imaging Center, University of Helsinki, Helsinki, Finland
| | - Eero Waris
- Department of Hand Surgery, Helsinki University Hospital, Helsinki, Finland
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6
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Littuma GJS, Sordi MB, Borges Curtarelli R, Aragonês Á, da Cruz ACC, Magini RS. Titanium coated with poly(lactic-co-glycolic) acid incorporating simvastatin: Biofunctionalization of dental prosthetic abutments. J Periodontal Res 2019; 55:116-124. [PMID: 31493346 DOI: 10.1111/jre.12695] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 07/19/2019] [Accepted: 08/13/2019] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To propose a biofunctionalized prosthetic abutment by analyzing physico-chemical and morphological properties, simvastatin (SIM) release, and biocompatibility of titanium (Ti) disks coated with poly(lactic-co-glycolic) acid (PLGA) incorporating SIM. METHODS Titanium disks (8 × 3 mm) were distributed into four groups: Ti: pure Ti; Ti + PLGA: Ti coated with PLGA; Ti + PLGA + SIM6%: Ti + PLGA with 6% SIM; and Ti + PLGA + SIM0.6%: Ti + PLGA incorporating 0.6% SIM. PLGA was prepared through chloroform evaporation technique. After complete dissolution of PLGA, SIM was diluted in the solution. Ti + PLGA, Ti + PLGA + SIM6%, and Ti + PLGA + SIM0.6% were dip coated with PLGA and PLGA + SIM, respectively. Samples were sterilized by ethylene oxide. For SIM release assay, disks were submerged in PBS, pH 7.4, 37°C, 30 rpm up to 600 hours. At different time intervals, SIM was quantified by spectrophotometry (238 nm). For characterization of the biomaterial components, it was performed Fourier-transform infrared spectroscopy, differential scanning calorimetry, scanning electron microscopy (SEM), optical profilometry, and atomic force microscopy. Biocompatibility analyses were performed by MTS colorimetric assay on murine fibroblasts L929, human gingival fibroblasts (HGFs), and stem cells from human exfoliated deciduous teeth (SHEDs). Absorbance was measured at 490 nm, and percentages of viable cells were calculated in relation to positive control (Ti). SEM images were obtained to verify cell adhesion and morphology. One-way ANOVA followed by Tukey's post hoc test was applied (P < 0.05) for statistical analyses. RESULTS SIM release was slow and continuous, reaching about 21% of the incorporated SIM after 600 hours. Topographical analyses revealed success in coating Ti disks with PLGA incorporating SIM. Regarding biocompatibility test, Ti + PLGA + SIM0.6% showed the highest percentage of L929 viability at days 3 and 7. There was no significant difference for Ti, Ti + PLGA, and Ti + PLGA + SIM0.6% groups on cell viability of both SHEDs and HGFs at days 3 and 7. SEM corroborates that SHEDs and HGFs were able to adhere and proliferate on Ti, Ti + PLGA, and Ti + PLGA + SIM0.6% surfaces. CONCLUSION A slow and controlled release of SIM was achieved, attributed to a diffusional mass transfer mechanism. Moreover, a homogenous coating topography was obtained. Additionally, 0.6% SIM incorporated into PLGA coating improved fibroblasts L929 viability compared to titanium or PLGA. Also, 0.6% SIM incorporated into PLGA promoted cell viability of about 100% for HGFs and approximately 150% for human mesenchymal stem cells. Therefore, this study allows to consider the use of PLGA-coated titanium incorporating SIM as a biofunctionalized abutment for dental implants.
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Affiliation(s)
- Gustavo J S Littuma
- Dentistry Post Graduation, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Mariane B Sordi
- Dentistry Post Graduation, Federal University of Santa Catarina, Florianópolis, Brazil
| | | | | | - Ariadne C C da Cruz
- Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Ricardo S Magini
- Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
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Gasik M, Zühlke A, Haaparanta AM, Muhonen V, Laine K, Bilotsky Y, Kellomäki M, Kiviranta I. The Importance of Controlled Mismatch of Biomechanical Compliances of Implantable Scaffolds and Native Tissue for Articular Cartilage Regeneration. Front Bioeng Biotechnol 2018; 6:187. [PMID: 30560126 PMCID: PMC6287196 DOI: 10.3389/fbioe.2018.00187] [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: 06/16/2018] [Accepted: 11/16/2018] [Indexed: 12/12/2022] Open
Abstract
Scaffolds for articular cartilage repair have to be optimally biodegradable with simultaneous promotion of hyaline cartilage formation under rather complex biomechanical and physiological conditions. It has been generally accepted that scaffold structure and composition would be the best when it mimics the structure of native cartilage. However, a reparative construct mimicking the mature native tissue in a healing tissue site presents a biological mismatch of reparative stimuli. In this work, we studied a new recombinant human type III collagen-polylactide (rhCol-PLA) scaffolds. The rhCol-PLA scaffolds were assessed for their relative performance in simulated synovial fluids of 1 and 4 mg/mL sodium hyaluronate with application of model-free analysis with Biomaterials Enhanced Simulation Test (BEST). Pure PLA scaffold was used as a control. The BEST results were compared to the results of a prior in vivo study with rhCol-PLA. Collectively the data indicated that a successful articular cartilage repair require lower stiffness of the scaffold compared to surrounding cartilage yet matching the strain compliance both in static and dynamic conditions. This ensures an optimal combination of load transfer and effective oscillatory nutrients supply to the cells. The results encourage further development of intelligent scaffold structures for optimal articular cartilage repair rather than simply trying to imitate the respective original tissue.
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Affiliation(s)
- Michael Gasik
- School of Chemical Engineering Aalto University Foundation, Espoo, Finland.,Seqvera Ltd., Helsinki, Finland
| | - Alexandra Zühlke
- School of Chemical Engineering Aalto University Foundation, Espoo, Finland
| | - Anne-Marie Haaparanta
- BioMediTech and Faculty of Biomedical Sciences and Engineering Tampere University of Technology, Tampere, Finland
| | - Virpi Muhonen
- Department of Orthopaedics and Traumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kaisa Laine
- BioMediTech and Faculty of Biomedical Sciences and Engineering Tampere University of Technology, Tampere, Finland
| | | | - Minna Kellomäki
- BioMediTech and Faculty of Biomedical Sciences and Engineering Tampere University of Technology, Tampere, Finland.,BioMediTech and Faculty of Life Sciences and Medicine University of Tampere, Tampere, Finland
| | - Ilkka Kiviranta
- Department of Orthopaedics and Traumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Ridge Preservation After Maxillary Third Molar Extraction Using 30% Porosity PLGA/HA/β-TCP Scaffolds With and Without Simvastatin. IMPLANT DENT 2017; 26:832-840. [DOI: 10.1097/id.0000000000000655] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Gasik M. Understanding biomaterial-tissue interface quality: combined in vitro evaluation. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2017; 18:550-562. [PMID: 28970865 PMCID: PMC5613488 DOI: 10.1080/14686996.2017.1348872] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 06/26/2017] [Accepted: 06/27/2017] [Indexed: 06/07/2023]
Abstract
One of the greatest challenges in the development of new medical products and devices remains in providing maximal patient safety, efficacy and suitability for the purpose. A 'good quality' of the tissue-implant interface is one of the most critical factors for the success of the implant integration. In this paper this challenge is being discussed from the point of view of basic stimuli combination to experimental testing. The focus is in particular on bacterial effects on tissue-implant interaction (for different materials). The demonstration of the experimental evaluation of the tissue-implant interface is for dental abutment with mucosal contact. This shows that testing of the interface quality could be the most relevant in controlled conditions, which mimic as possible the clinical applications, but consider variables being under the control of the evaluator.
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Affiliation(s)
- Michael Gasik
- School of Chemical Engineering, Aalto University Foundation, Finland
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10
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Analysis of Bone Repair and Inflammatory Process Caused by Simvastatin Combined With PLGA+HA+βTCP Scaffold. IMPLANT DENT 2017; 25:140-8. [PMID: 26606285 DOI: 10.1097/id.0000000000000359] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE This study evaluated the tissue and inflammatory responses to the use of simvastatin and poly(lactic-co-glycolic acid) + hydroxyapatite + β-tricalcium phosphate (PLGA+HA+βTCP) scaffold for bone repair. MATERIALS AND METHODS Two defects of 5 mm in diameter were made in the calvaria of rats, which were shared into the following 6 groups: naive, sham, vehicle, PLGA+HA+βTCP scaffold, simvastatin (4 mg/mL), and simvastatin with the scaffold. Tissue samples were collected at 1, 7, 15, 30, and 60 days after surgery. Inflammation was evaluated by interleukin-1 beta and tumor necrosis factor alpha quantification and by a hemogram, whereas bone repair was evaluated using densitometry and scanning electron microscopy. Data were statistically analyzed using ANOVA followed by post hoc tests (P < 0.05). RESULTS There was an increased cytokine expression in the scaffold and simvastatin groups (P < 0.001 and P < 0.05, respectively) 1 day after surgery but no alterations on the hemogram were observed. It was found on bone tissue samples that 60 days after surgery all groups presented similar densitometry values and morphology characteristics, despite the occurrence of bone formation delay in the simvastatin group (P < 0.01). CONCLUSION The use of simvastatin and PLGA+HA+βTCP scaffold, associated or not, did not lead to improvement in bone repair.
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Muhonen V, Salonius E, Haaparanta AM, Järvinen E, Paatela T, Meller A, Hannula M, Björkman M, Pyhältö T, Ellä V, Vasara A, Töyräs J, Kellomäki M, Kiviranta I. Articular cartilage repair with recombinant human type II collagen/polylactide scaffold in a preliminary porcine study. J Orthop Res 2016; 34:745-53. [PMID: 26573959 DOI: 10.1002/jor.23099] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 11/03/2015] [Indexed: 02/04/2023]
Abstract
The purpose of this study was to investigate the potential of a novel recombinant human type II collagen/polylactide scaffold (rhCo-PLA) in the repair of full-thickness cartilage lesions with autologous chondrocyte implantation technique (ACI). The forming repair tissue was compared to spontaneous healing (spontaneous) and repair with a commercial porcine type I/III collagen membrane (pCo). Domestic pigs (4-month-old, n = 20) were randomized into three study groups and a circular full-thickness chondral lesion with a diameter of 8 mm was created in the right medial femoral condyle. After 3 weeks, the chondral lesions were repaired with either rhCo-PLA or pCo together with autologous chondrocytes, or the lesion was only debrided and left untreated for spontaneous repair. The repair tissue was evaluated 4 months after the second operation. Hyaline cartilage formed most frequently in the rhCo-PLA treatment group. Biomechanically, there was a trend that both treatment groups resulted in better repair tissue than spontaneous healing. Adverse subchondral bone reactions developed less frequently in the spontaneous group (40%) and the rhCo-PLA treated group (50%) than in the pCo control group (100%). However, no statistically significant differences were found between the groups. The novel rhCo-PLA biomaterial showed promising results in this proof-of-concept study, but further studies will be needed in order to determine its effectiveness in articular cartilage repair. © 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:745-753, 2016.
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Affiliation(s)
- Virpi Muhonen
- Department of Orthopaedics and Traumatology, University of Helsinki, Helsinki, Finland
| | - Eve Salonius
- Department of Orthopaedics and Traumatology, University of Helsinki, Helsinki, Finland
| | - Anne-Marie Haaparanta
- Department of Electronics and Communications Engineering, Tampere University of Technology and BioMediTech, Tampere, Finland
| | - Elina Järvinen
- Department of Orthopaedics and Traumatology, University of Helsinki, Helsinki, Finland
| | - Teemu Paatela
- Department of Orthopaedics and Traumatology, University of Helsinki, Helsinki, Finland.,Department of Orthopaedics and Traumatology, Helsinki University Hospital, Helsinki, Finland
| | - Anna Meller
- Laboratory Animal Center, University of Helsinki, Helsinki, Finland
| | - Markus Hannula
- Department of Electronics and Communications Engineering, Tampere University of Technology and BioMediTech, Tampere, Finland
| | - Mimmi Björkman
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
| | - Tuomo Pyhältö
- Department of Orthopaedics and Traumatology, Helsinki University Hospital, Helsinki, Finland
| | - Ville Ellä
- Department of Electronics and Communications Engineering, Tampere University of Technology and BioMediTech, Tampere, Finland
| | - Anna Vasara
- Department of Orthopaedics and Traumatology, University of Helsinki, Helsinki, Finland.,Department of Orthopaedics and Traumatology, Helsinki University Hospital, Helsinki, Finland
| | - Juha Töyräs
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland.,Department of Clinical Neurophysiology, Kuopio University Hospital, Kuopio, Finland
| | - Minna Kellomäki
- Department of Electronics and Communications Engineering, Tampere University of Technology and BioMediTech, Tampere, Finland
| | - Ilkka Kiviranta
- Department of Orthopaedics and Traumatology, University of Helsinki, Helsinki, Finland.,Department of Orthopaedics and Traumatology, Helsinki University Hospital, Helsinki, Finland
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12
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Aibibu D, Hild M, Wöltje M, Cherif C. Textile cell-free scaffolds for in situ tissue engineering applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:63. [PMID: 26800694 PMCID: PMC4723636 DOI: 10.1007/s10856-015-5656-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 12/20/2015] [Indexed: 05/12/2023]
Abstract
In this article, the benefits offered by micro-fibrous scaffold architectures fabricated by textile manufacturing techniques are discussed: How can established and novel fiber-processing techniques be exploited in order to generate templates matching the demands of the target cell niche? The problems related to the development of biomaterial fibers (especially from nature-derived materials) ready for textile manufacturing are addressed. Attention is also paid on how biological cues may be incorporated into micro-fibrous scaffold architectures by hybrid manufacturing approaches (e.g. nanofiber or hydrogel functionalization). After a critical review of exemplary recent research works on cell-free fiber based scaffolds for in situ TE, including clinical studies, we conclude that in order to make use of the whole range of favors which may be provided by engineered fibrous scaffold systems, there are four main issues which need to be addressed: (1) Logical combination of manufacturing techniques and materials. (2) Biomaterial fiber development. (3) Adaption of textile manufacturing techniques to the demands of scaffolds for regenerative medicine. (4) Incorporation of biological cues (e.g. stem cell homing factors).
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Affiliation(s)
- Dilbar Aibibu
- Technische Universität Dresden, Fakultät Maschinenwesen, Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik, 01062, Dresden, Germany.
| | - Martin Hild
- Technische Universität Dresden, Fakultät Maschinenwesen, Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik, 01062, Dresden, Germany
| | - Michael Wöltje
- Technische Universität Dresden, Fakultät Maschinenwesen, Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik, 01062, Dresden, Germany
| | - Chokri Cherif
- Technische Universität Dresden, Fakultät Maschinenwesen, Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik, 01062, Dresden, Germany
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Hiltunen M, Pelto J, Ellä V, Kellomäki M. Uniform and electrically conductive biopolymer-doped polypyrrole coating for fibrous PLA. J Biomed Mater Res B Appl Biomater 2015; 104:1721-1729. [DOI: 10.1002/jbm.b.33514] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 06/30/2015] [Accepted: 08/23/2015] [Indexed: 01/07/2023]
Affiliation(s)
- M. Hiltunen
- Department of Electronics and Communications Engineering; Tampere University of Technology, BioMediTech; Tampere Finland
| | - J. Pelto
- VTT Technical Research Centre of Finland; Tampere Finland
| | - V. Ellä
- Department of Electronics and Communications Engineering; Tampere University of Technology, BioMediTech; Tampere Finland
| | - M. Kellomäki
- Department of Electronics and Communications Engineering; Tampere University of Technology, BioMediTech; Tampere Finland
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14
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Ellä V, Annala T, Länsman S, Nurminen M, Kellomäki M. Knitted polylactide 96/4 L/D structures and scaffolds for tissue engineering: shelf life, in vitro and in vivo studies. BIOMATTER 2014; 1:102-13. [PMID: 23507732 PMCID: PMC3548249 DOI: 10.4161/biom.1.1.17447] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This study covers the whole production cycle, from biodegradable polymer processing to an in vivo tissue engineered construct. Six different biodegradable polylactide 96/4 L/D single jersey knits were manufactured using either four or eight multifilament fiber batches. The properties of those were studied in vitro for 42 weeks and in 0- to 3-year shelf life studies. Three types (Ø 12, 15 and 19 mm) of cylindrical scaffolds were manufactured from the knit, and the properties of those were studied in vitro for 48 weeks. For the Ø 15 mm scaffold type, mechanical properties were also studied in a one-year in vivo experiment. The scaffolds were implanted in the rat subcutis. All the scaffolds were γ-irradiated prior to the studies. In vitro, all the knits lost 99% of their mechanical strength in 30 weeks. In the three-year follow up of shelf life properties, there was no decrease in the mechanical properties due to the storage time and only a 12% decrease in molecular weight. The in vitro and in vivo scaffolds lost their mechanical properties after 1 week. In the case of the in vivo samples, the mechanical properties were restored again, stepwise, by the presence of growing/maturing tissue between weeks 3 and 12. Faster degradation was observed with in vitro scaffolds compared to in vivo scaffolds during the one-year follow up.
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Affiliation(s)
- Ville Ellä
- Department of Biomedical Engineering, Tampere University of Technology, Tampere, Finland.
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15
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Tiihonen R, Honkanen PB, Belt EA, Ikävalko M, Skyttä ET. The Mean Seven Years' Results of the Use of Poly-L/D-Lactic Acid (PLDLA) Interposition Implant and Bone Packing in Revision Metacarpophalangeal Arthroplasty: A Prospective Cohort Study. Scand J Surg 2012; 101:265-70. [DOI: 10.1177/145749691210100408] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background and Aims: Revision arthroplasty of metacarpophalangeal (MCP) joints in chronic inflammatory arthritis patients after silicone implants is challenging due of severe bone loss and soft tissue deficiencies. The aim of this study was to evaluate the outcome of revision MC Parthroplasty using poly-L/D-lactic acid 96:4 (PLDLA) interposition implant and morcelised allograft or autograft bone packing in patients with failed MCP arthroplasties and severe osteolysis. Material and Methods: The study group consisted of 15 patients (15 hands and 36 joints) at a mean follow-up of seven years (range 5–10 years). The radiographs were reviewed for osteolysis and incorporation of the grafted bone. The clinical assessments included active range of motion, evaluation of pain, subjective outcome and assessment of grip power. Results: PLDLA interposition arthroplasty combined with bone packing provided satisfactory pain relief, but function was limited. Radiographic analysis showed complete incorporation of the grafted bone to the diaphyseal portion of the host metacarpal and phalangeal bones in 30 of the 36 joints. All the patients had very limited grip strength, both on the operated and non-operated side. Conclusions: Due to soft tissue deficiencies long-term function and alignment problems can not be resolved with PLDLA interposition implant.
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Affiliation(s)
- R. Tiihonen
- Department of Orthopaedics, Päijät-Häme Central Hospital, Lahti, Finland
| | - P. B. Honkanen
- COXA Hospital for Joint Replacement, Tampere, Finland
- Centre for Rheumatic Diseases, Department of Orthopaedics, Tampere University Hospital, Tampere, Finland
| | - E. A. Belt
- Rheumatism Foundation Hospital, Heinola, Finland
| | - M. Ikävalko
- Rheumatism Foundation Hospital, Heinola, Finland
| | - E. T. Skyttä
- COXA Hospital for Joint Replacement, Tampere, Finland
- Centre for Rheumatic Diseases, Department of Orthopaedics, Tampere University Hospital, Tampere, Finland
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16
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Ahtiainen K, Sippola L, Nurminen M, Mannerström B, Haimi S, Suuronen R, Hyttinen J, Ylikomi T, Kellomäki M, Miettinen S. Effects of chitosan and bioactive glass modifications of knitted and rolled polylactide-based 96/4 L/D scaffolds on chondrogenic differentiation of adipose stem cells. J Tissue Eng Regen Med 2012; 9:55-65. [DOI: 10.1002/term.1614] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 06/25/2012] [Accepted: 08/25/2012] [Indexed: 12/20/2022]
Affiliation(s)
- Katja Ahtiainen
- Department of Cell Biology, School of Medicine; University of Tampere; Finland
- Adult Stem Cells; Institute of Biomedical Technology, University of Tampere; Finland
- BioMediTech; Tampere Finland
- Science Center; Tampere University Hospital; Finland
| | - Laura Sippola
- BioMediTech; Tampere Finland
- Department of Biomedical Engineering; Tampere University of Technology; Finland
| | - Manu Nurminen
- BioMediTech; Tampere Finland
- Department of Biomedical Engineering; Tampere University of Technology; Finland
| | - Bettina Mannerström
- Adult Stem Cells; Institute of Biomedical Technology, University of Tampere; Finland
- BioMediTech; Tampere Finland
- Science Center; Tampere University Hospital; Finland
| | - Suvi Haimi
- Adult Stem Cells; Institute of Biomedical Technology, University of Tampere; Finland
- BioMediTech; Tampere Finland
- Science Center; Tampere University Hospital; Finland
| | - Riitta Suuronen
- Adult Stem Cells; Institute of Biomedical Technology, University of Tampere; Finland
- BioMediTech; Tampere Finland
- Department of Biomedical Engineering; Tampere University of Technology; Finland
- Department of Eye, Ear, and Oral Diseases; Tampere University Hospital; Finland
| | - Jari Hyttinen
- BioMediTech; Tampere Finland
- Department of Biomedical Engineering; Tampere University of Technology; Finland
| | - Timo Ylikomi
- Department of Cell Biology, School of Medicine; University of Tampere; Finland
- FICAM, Finnish Center for Alternative Methods, School of Medicine; University of Tampere; Finland
- Department of Clinical Chemistry; Tampere University Hospital; Finland
| | - Minna Kellomäki
- BioMediTech; Tampere Finland
- Department of Biomedical Engineering; Tampere University of Technology; Finland
| | - Susanna Miettinen
- Adult Stem Cells; Institute of Biomedical Technology, University of Tampere; Finland
- BioMediTech; Tampere Finland
- Science Center; Tampere University Hospital; Finland
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Tiihonen RP, Skyttä ET, Kaarela K, Ikävalko M, Belt EA. Reconstruction of the trapeziometacarpal joint in inflammatory joint disease using interposition of autologous tendon or poly-L-D-lactic acid implants: A prospective clinical trial. J Plast Surg Hand Surg 2012; 46:113-9. [DOI: 10.3109/2000656x.2012.669202] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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18
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Honkanen PB, Tiihonen R, Skyttä ET, Ikävalko M, Lehto MUK, Konttinen YT. Bioreconstructive poly-L/D-lactide implant compared with Swanson prosthesis in metacarpophalangeal joint arthroplasty in rheumatoid patients: a randomized clinical trial. J Hand Surg Eur Vol 2010; 35:746-53. [PMID: 20627902 DOI: 10.1177/1753193410375777] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
It was hypothesized that the bioresorbable interposition implant might offer a viable alternative to conventional silicone implant arthroplasty in rheumatoid metacarpophalangeal joint destruction. A randomized clinical study was performed to compare a stemless poly-L/D-lactide copolymer 96 : 4 (PLDLA) implant with the Swanson silicone implant. Results in 52 patients (53 hands and 175 joints) at a mean follow-up of 2 years (minimum 1 year) showed that the improvement in clinical assessments was comparable in both groups, except for better maintenance of palmar alignment in the Swanson group. The lack of implant fractures and intramedullary osteolysis were advantages of the PLDLA implant. The bioresorbable PLDLA interposition implant may offer an alternative tool for tailored reconstruction of rheumatoid metacarpophalangeal joints.
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Affiliation(s)
- P B Honkanen
- Rheumaorthopaedic Unit, Center of Rheumatic Diseases, Department of Internal Medicine, Tampere University Hospital Tampere, Finland.
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19
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The Use of Polymers in the Treatment of Retinal Detachment: Current Trends and Future Perspectives. Polymers (Basel) 2010. [DOI: 10.3390/polym2030286] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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20
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Long-term bone tissue reaction to polyethylene oxide/polybutylene terephthalate copolymer (Polyactive®) in metacarpophalangeal joint reconstruction. Biomaterials 2008; 29:2509-15. [DOI: 10.1016/j.biomaterials.2008.02.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2007] [Accepted: 02/13/2008] [Indexed: 11/21/2022]
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21
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The use of biodegradable scaffold as an alternative to silicone implant arthroplasty for small joint reconstruction: An experimental study in minipigs. Biomaterials 2008; 29:683-91. [DOI: 10.1016/j.biomaterials.2007.10.037] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2007] [Accepted: 10/25/2007] [Indexed: 11/19/2022]
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