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Safin Kaosar Saad K, Saba T, Bin Rashid A. Application of PVD coatings in medical implantology for enhanced performance, biocompatibility, and quality of life. Heliyon 2024; 10:e35541. [PMID: 39220946 PMCID: PMC11363861 DOI: 10.1016/j.heliyon.2024.e35541] [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: 05/03/2024] [Revised: 07/30/2024] [Accepted: 07/31/2024] [Indexed: 09/04/2024] Open
Abstract
Physical vapor deposition (PVD) coating is a versatile and well-liked method for depositing thin films of materials onto surfaces in a range of industries. Due to their numerous functional and aesthetic benefits, PVD coatings are beneficial in several applications, from electronics and optics to automotive and medical equipment. PVD coating technology dramatically improves the effectiveness and quality of medical implants. PVD-coated medical implants improve osseointegration, lower wear and friction, increase corrosion resistance, and have antibacterial properties, which lead to better patient outcomes, fewer complications, and overall higher quality of life for people who need implantable medical devices. The essential concepts of PVD coating and the numerous deposition techniques and materials used are covered at the study's outset. The specific uses of PVD-coated medical implants are then highlighted, including those for orthopedic and dental implants and cardiovascular and neurosurgical devices. The review also emphasizes the critical contribution of PVD coatings to reducing wear and friction, improving corrosion resistance, augmenting biocompatibility, enhancing osseointegration, and aesthetic appeal. The challenges and prospects of PVD coating technologies were further addressed in this article. This review is invaluable for academics, doctors, and businesspeople interested in the beneficial combination of PVD coating and medical implantology.
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Affiliation(s)
- Khondoker Safin Kaosar Saad
- Department of Industrial and Production Engineering, Military Institute of Science and Technology (MIST), Dhaka, 1216, Bangladesh
| | - Tasfia Saba
- Department of Industrial and Production Engineering, Military Institute of Science and Technology (MIST), Dhaka, 1216, Bangladesh
| | - Adib Bin Rashid
- Department of Industrial and Production Engineering, Military Institute of Science and Technology (MIST), Dhaka, 1216, Bangladesh
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Ghazanfar E, Marwat MA, Batool SA, Anwar A, Abdullah SM, Din ZU, Humayun M, Bououdina M, Abo-Elnasr AB, Ali HT. Electrophoretic deposition of polyvinyl alcohol, C-H NRs along with moringa on an SS substrate for orthopedic implant applications. RSC Adv 2024; 14:26775-26787. [PMID: 39184003 PMCID: PMC11342069 DOI: 10.1039/d4ra03931a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Accepted: 08/17/2024] [Indexed: 08/27/2024] Open
Abstract
Metals are commonly used in bone implants due to their durability and load-bearing capabilities, yet they often suffer from biofilm growth and corrosion. To overcome these challenges, implants with enhanced biocompatibility, bioactivity, and antimicrobial properties are preferred. Stainless steel (SS) implants are widely favored in orthopedics for their mechanical strength and cost-effectiveness. To address the issues related to SS implants, we developed composite coatings using synthetic biopolymer polyvinyl alcohol (PVA), calcium hydrate (C-H) nanorods for improved bioactivity and antibacterial properties, and Moringa oleifera to enhance osteogenic induction. These coatings were deposited on 316L SS through electrophoretic deposition (EPD), providing protection against body fluids and enhancing the corrosion resistance of the SS. X-ray diffraction (XRD) confirmed the presence of the desired tobermorite crystal structure, while scanning electron microscopy (SEM) revealed nanorod-like C-H structures, a film thickness of 29 microns, and a hedgehog-like morphology in the composite particles. The coated sample demonstrated a contact angle of 64°, optimal for protein attachment and cellular uptake. Additionally, the coating exhibited strong adhesion with less than 5% damage observed in cross-cut hatch testing and appropriate surface roughness for protein attachment. Differential Scanning Calorimetry (DSC) and thermogravimetric analysis (TGA) assessed the thermal response of the materials. The coating also showed antibacterial activity against both Gram-negative and Gram-positive bacteria. Furthermore, the sample exhibited rapid bioactivity by forming a hydroxyapatite (HA) layer within 24 hours, with 35.4% degradability within 24 hours and 44.5% within 48 hours. These findings confirm that the composite film enhances the biocompatibility, bioactivity, and antibacterial properties of SS orthopedic implants in a cost-effective manner.
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Affiliation(s)
- Esha Ghazanfar
- Department of Materials Science and Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Mohsin Ali Marwat
- Department of Materials Science and Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Syeda Ammara Batool
- Materials Engineering Research Institute, Sheffield Hallam University Sheffield UK
| | - Areeb Anwar
- Skolkovo Institute of Science and Technology Moscow Russia
| | - Syed Muhammad Abdullah
- Department of Materials Science and Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Zia Ud Din
- Department of Materials Science and Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Muhammad Humayun
- Energy, Water, and Environment Lab, College of Humanities and Sciences, Prince Sultan University Riyadh 11586 Saudi Arabia
| | - Mohamed Bououdina
- Energy, Water, and Environment Lab, College of Humanities and Sciences, Prince Sultan University Riyadh 11586 Saudi Arabia
| | - Al-Badrawy Abo-Elnasr
- Department of Mechanical Engineering, College of Engineering, Taif University Kingdom of Saudi Arabia
| | - Hafiz Tauqeer Ali
- Department of Mechanical Engineering, College of Engineering, Taif University Kingdom of Saudi Arabia
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Waldron OP, El-Mallah JC, Lochan D, Wen C, Landmesser ME, Asgardoon M, Dawes J, Horchler SN, Schlidt K, Agrawal S, Wang Y, Ravnic DJ. Ushering in the era of regenerative surgery. Minerva Surg 2024; 79:166-182. [PMID: 38088753 DOI: 10.23736/s2724-5691.23.10113-4] [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: 04/10/2024]
Abstract
Tissue loss, irrespective of etiology, often requires extensive reconstruction. In many instances, the need exceeds what current treatments and technologies modern medicine can offer. Tissue engineering has made immense strides within the past few decades due to advances in biologics, biomaterials, and manufacturing. The convergence of these three domains has created limitless potential for future surgical care. Unfortunately, there still exists a disconnect on how to best implant these 'replacement parts' and care for the patient. It is therefore vital to develop paradigms for the integration of advanced surgical and tissue engineering technologies. This paper explores the convergence between tissue engineering and reconstructive surgery. We will describe the clinical problem of tissue loss, discuss currently available solutions, address limitations, and propose processes for integrating surgery and tissue engineering, thereby ushering in the era of regenerative surgery.
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Affiliation(s)
- Olivia P Waldron
- Irvin S. Zubar Plastic Surgery Research Laboratory, Penn State College of Medicine, Hershey, PA, USA
| | - Jessica C El-Mallah
- Irvin S. Zubar Plastic Surgery Research Laboratory, Penn State College of Medicine, Hershey, PA, USA
- Department of Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Dev Lochan
- Irvin S. Zubar Plastic Surgery Research Laboratory, Penn State College of Medicine, Hershey, PA, USA
| | - Connie Wen
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Mary E Landmesser
- Irvin S. Zubar Plastic Surgery Research Laboratory, Penn State College of Medicine, Hershey, PA, USA
- Department of Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Mohammadhossein Asgardoon
- Irvin S. Zubar Plastic Surgery Research Laboratory, Penn State College of Medicine, Hershey, PA, USA
- Department of Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Jazzmyn Dawes
- Irvin S. Zubar Plastic Surgery Research Laboratory, Penn State College of Medicine, Hershey, PA, USA
| | - Summer N Horchler
- Irvin S. Zubar Plastic Surgery Research Laboratory, Penn State College of Medicine, Hershey, PA, USA
| | - Kevin Schlidt
- Irvin S. Zubar Plastic Surgery Research Laboratory, Penn State College of Medicine, Hershey, PA, USA
| | - Shailaja Agrawal
- Irvin S. Zubar Plastic Surgery Research Laboratory, Penn State College of Medicine, Hershey, PA, USA
- Department of Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Yong Wang
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Dino J Ravnic
- Irvin S. Zubar Plastic Surgery Research Laboratory, Penn State College of Medicine, Hershey, PA, USA -
- Department of Surgery, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, USA
- Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA
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Tang Y, Yang X, Hu H, Jiang H, Xiong W, Mei H, Hu Y. Elevating the potential of CAR-T cell therapy in solid tumors: exploiting biomaterials-based delivery techniques. Front Bioeng Biotechnol 2024; 11:1320807. [PMID: 38312512 PMCID: PMC10835794 DOI: 10.3389/fbioe.2023.1320807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 12/05/2023] [Indexed: 02/06/2024] Open
Abstract
Chimeric antigen receptor (CAR) T cells exhibit promising progress in addressing hematologic malignancies. However, CAR-T therapy for solid tumors remains limited, with no FDA-approved CAR-T products available for clinical use at present. Primary reasons include insufficient infiltration, accumulation, tumor immunosuppression of the microenvironment, and related side effects. Single utilization of CAR-T cannot effectively overcome these unfavorable obstacles. A probable effective pathway to achieve a better CAR-T therapy effect would be to combine the benefits of biomaterials-based technology. In this article, comprehensive biomaterials strategies to break through these obstacles of CAR-T cell therapy at the tumor sites are summarized, encompassing the following aspects: 1) generating orthotopic CAR-T cells; 2) facilitating CAR-T cell trafficking; 3) stimulating CAR-T cell expansion and infiltration; 4) improving CAR-T cell activity and persistence; 5) reprogramming the immunosuppressive microenvironments. Additionally, future requirements for the development of this field, with a specific emphasis on promoting innovation and facilitating clinical translation, are thoroughly discussed.
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Affiliation(s)
- Yuxiang Tang
- Tongji Medical College, Union Hospital, Institute of Hematology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Clinical Medical Center of Cell Therapy for Neoplastic Disease, Wuhan, China
| | - Xiaoyu Yang
- Department of Pharmacy, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Hang Hu
- School of Pharmacy, ChangZhou University, Changzhou, China
| | - Huiwen Jiang
- Tongji Medical College, Union Hospital, Institute of Hematology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Clinical Medical Center of Cell Therapy for Neoplastic Disease, Wuhan, China
| | - Wei Xiong
- Wuhan Sian Medical Technology Co., Ltd., Wuhan, China
| | - Heng Mei
- Tongji Medical College, Union Hospital, Institute of Hematology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Clinical Medical Center of Cell Therapy for Neoplastic Disease, Wuhan, China
| | - Yu Hu
- Tongji Medical College, Union Hospital, Institute of Hematology, Huazhong University of Science and Technology, Wuhan, China
- Hubei Clinical Medical Center of Cell Therapy for Neoplastic Disease, Wuhan, China
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Patra A, Bandyopadhyay A, Roy S, Mondal JA. Origin of Strong Hydrogen Bonding and Preferred Orientation of Water at Uncharged Polyethylene Glycol Polymer/Water Interface. J Phys Chem Lett 2023; 14:11359-11366. [PMID: 38065092 DOI: 10.1021/acs.jpclett.3c03098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Polyethylene glycol (PEG), a water-soluble non-ionic polymer, finds diverse applications from Li-ion batteries to drug delivery. The effectiveness of PEG in these contexts hinges on water's behavior at PEG/water interfaces. Employing heterodyne-detected vibrational sum frequency generation and Raman spectroscopy along with a novel analytical approach, termed difference spectroscopy with simultaneous curve-fitting analysis, we observed that water exhibits both "hydrogen-up" and "hydrogen-down" orientations at PEG(≥400u)/water interfaces. As the molar mass of PEG increases, the contribution of the strongly hydrogen-bonded and H-up-oriented water rises. We propose that the PEG-affected interfacial water originates from the asymmetrical hydration of the surface-adsorbed PEG, as evidenced by the resemblance between the water spectra in the hydration shell of PEG and those at the PEG/water interface. These findings elucidate the molecular mechanism underlying PEG's catalytic role in water splitting at membrane interfaces.
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Affiliation(s)
- Animesh Patra
- School of Chemistry, Centre for Excellence in Basic Sciences, Mumbai 400098, India
| | - Anisha Bandyopadhyay
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Homi Bhabha National Institute, Trombay, Mumbai 400085, India
| | - Subhadip Roy
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Homi Bhabha National Institute, Trombay, Mumbai 400085, India
| | - Jahur Alam Mondal
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Homi Bhabha National Institute, Trombay, Mumbai 400085, India
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Fuest S, Smeets R, Gosau M, Aavani F, Knipfer C, Grust ALC, Kopp A, Becerikli M, Behr B, Matthies L. Layer-by-Layer Deposition of Regenerated Silk Fibroin─An Approach to the Surface Coating of Biomedical Implant Materials. ACS Biomater Sci Eng 2023; 9:6644-6657. [PMID: 37983947 DOI: 10.1021/acsbiomaterials.3c00852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Biomaterials and coating techniques unlock major benefits for advanced medical therapies. Here, we explored layer-by-layer (LbL) deposition of silk fibroin (SF) by dip coating to deploy homogeneous films on different materials (titanium, magnesium, and polymers) frequently used for orthopedic and other bone-related implants. Titanium and magnesium specimens underwent preceding plasma electrolytic oxidation (PEO) to increase hydrophilicity. This was determined as surface properties were visualized by scanning electron microscopy and contact angle measurements as well as Fourier transform infrared spectroscopy (FTIR) analysis. Finally, biological in vitro evaluations of hemocompatibility, THP-1 cell culture, and TNF-α assays were conducted. A more hydrophilic surface could be achieved using the PEO surface, and the contact angle for magnesium and titanium showed a reduction from 73 to 18° and from 58 to 17°, respectively. Coating with SF proved successful on all three surfaces, and coating thicknesses of up to 5.14 μm (±SD 0.22 μm) were achieved. Using FTIR analysis, it was shown that the insolubility of the material was achieved by post-treatment with water vapor annealing, although the random coil peak (1640-1649 cm-1) and the α-helix peak (at 1650 cm-1) were still evident. SF did not change hemocompatibility, regardless of the substrate, whereas the PEO-coated materials showed improved hemocompatibility. THP-1 cell culture showed that cells adhered excellently to all of the tested material surfaces. Interestingly, SF coatings induced a significantly higher amount of TNF-α for all materials, indicating an inflammatory response, which plays an important role in a variety of physiological processes, including osteogenesis. LbL coatings of SF are shown to be promising candidates to modulate the body's immune response to implants manufactured from titanium, magnesium, and polymers. They may therefore facilitate future applications for bioactive implant coatings. However, further in vivo studies are needed to confirm the proposed effects on osteogenesis in a physiological environment.
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Affiliation(s)
- Sandra Fuest
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Martin Gosau
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Farzaneh Aavani
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Christian Knipfer
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Audrey Laure Céline Grust
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | | | - Mustafa Becerikli
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, D-44789 Bochum, Germany
| | - Björn Behr
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, D-44789 Bochum, Germany
| | - Levi Matthies
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
- Mildred Scheel Cancer Career Center HaTriCS4, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
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Schreib CC, Jarvis MI, Terlier T, Goell J, Mukherjee S, Doerfert MD, Wilson TA, Beauregard M, Martins KN, Lee J, Solis LS, Vazquez E, Oberli MA, Hanak BW, Diehl M, Hilton I, Veiseh O. Lipid Deposition Profiles Influence Foreign Body Responses. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2205709. [PMID: 36871193 PMCID: PMC10309593 DOI: 10.1002/adma.202205709] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 12/09/2022] [Indexed: 05/26/2023]
Abstract
Fibrosis remains a significant cause of failure in implanted biomedical devices and early absorption of proteins on implant surfaces has been shown to be a key instigating factor. However, lipids can also regulate immune activity and their presence may also contribute to biomaterial-induced foreign body responses (FBR) and fibrosis. Here it is demonstrated that the surface presentation of lipids on implant affects FBR by influencing reactions of immune cells to materials as well as their resultant inflammatory/suppressive polarization. Time-of-flight secondary ion mass spectroscopy (ToF-SIMS) is employed to characterize lipid deposition on implants that are surface-modified chemically with immunomodulatory small molecules. Multiple immunosuppressive phospholipids (phosphatidylcholine, phosphatidylinositol, phosphatidylethanolamine, and sphingomyelin) are all found to deposit preferentially on implants with anti-FBR surface modifications in mice. Significantly, a set of 11 fatty acids is enriched on unmodified implanted devices that failed in both mice and humans, highlighting relevance across species. Phospholipid deposition is also found to upregulate the transcription of anti-inflammatory genes in murine macrophages, while fatty acid deposition stimulated the expression of pro-inflammatory genes. These results provide further insights into how to improve the design of biomaterials and medical devices to mitigate biomaterial material-induced FBR and fibrosis.
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Affiliation(s)
- Christian C. Schreib
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030
| | - Maria I. Jarvis
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030
- Present address: Lonza Inc. 14905 Kirby Drive, Houston, TX 77047
| | - Tanguy Terlier
- SIMS laboratory, Shared Equipment Authority, Rice University, 6500 Main Street, Houston, TX 77030
| | - Jacob Goell
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030
| | - Sudip Mukherjee
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030
- Present address: School of Biomedial Engineering, ITT (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Michael D. Doerfert
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030
| | - Taylor Anne Wilson
- Department of Neurosurgery, Loma Linda University Health, 11234 Anderson St, Loma Linda, CA 92354
| | - Michael Beauregard
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030
| | - Kevin N. Martins
- Department of Neurosurgery, Loma Linda University Health, 11234 Anderson St, Loma Linda, CA 92354
| | - Jared Lee
- Department of Chemistry, Rice University, 6100 Main St, Houston, TX 77005
| | - Leo Sanchez Solis
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030
| | - Esperanza Vazquez
- Department of Biomedical Engineering, University of Houston, 3517 Cullen Blvd, Houston, TX 77204
| | - Matthias A. Oberli
- Sigilon Therapeutics, 200 Dexter Avenue, Watertown, MA 02472
- Present address: Xibus systems Inc. 200 Dexter Avenue, Watertown, MA 02472
| | - Brian W. Hanak
- Department of Neurosurgery, Loma Linda University Health, 11234 Anderson St, Loma Linda, CA 92354
| | - Michael Diehl
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030
| | - Isaac Hilton
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030
- Program of Synthetic, Systems and Physical Biology, Rice University, 6500 Main Street, Houston, TX 77030
| | - Omid Veiseh
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030
- Program of Synthetic, Systems and Physical Biology, Rice University, 6500 Main Street, Houston, TX 77030
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Janů L, Dvořáková E, Polášková K, Buchtelová M, Ryšánek P, Chlup Z, Kruml T, Galmiz O, Nečas D, Zajíčková L. Enhanced Adhesion of Electrospun Polycaprolactone Nanofibers to Plasma-Modified Polypropylene Fabric. Polymers (Basel) 2023; 15:polym15071686. [PMID: 37050300 PMCID: PMC10097108 DOI: 10.3390/polym15071686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/16/2023] [Accepted: 03/23/2023] [Indexed: 03/31/2023] Open
Abstract
Excellent adhesion of electrospun nanofiber (NF) to textile support is crucial for a broad range of their bioapplications, e.g., wound dressing development. We compared the effect of several low- and atmospheric pressure plasma modifications on the adhesion between two parts of composite—polycaprolactone (PCL) nanofibrous mat (functional part) and polypropylene (PP) spunbond fabric (support). The support fabrics were modified before electrospinning by low-pressure plasma oxygen treatment or amine plasma polymer thin film or treated by atmospheric pressure plasma slit jet (PSJ) in argon or argon/nitrogen. The adhesion was evaluated by tensile test and loop test adapted for thin NF mat measurement and the trends obtained by both tests largely agreed. Although all modifications improved the adhesion significantly (at least twice for PSJ treatments), low-pressure oxygen treatment showed to be the most effective as it strengthened adhesion by a factor of six. The adhesion improvement was ascribed to the synergic effect of high treatment homogeneity with the right ratio of surface functional groups and sufficient wettability. The low-pressure modified fabric also stayed long-term hydrophilic (ten months), even though surfaces usually return to a non-wettable state (hydrophobic recovery). In contrast to XPS, highly surface-sensitive water contact angle measurement proved suitable for monitoring subtle surface changes.
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Affiliation(s)
- Lucie Janů
- Plasma Technologies for Materials, Central European Institute of Technology—CEITEC, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
- Correspondence: (L.J.); (L.Z.)
| | - Eva Dvořáková
- Plasma Technologies for Materials, Central European Institute of Technology—CEITEC, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
| | - Kateřina Polášková
- Plasma Technologies for Materials, Central European Institute of Technology—CEITEC, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
- Department of Condensed Matter Physics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Martina Buchtelová
- Plasma Technologies for Materials, Central European Institute of Technology—CEITEC, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
| | - Petr Ryšánek
- Faculty of Science, J.E. Purkyně University, Pasteurova 15, 400 96 Ústí nad Labem, Czech Republic
| | - Zdeněk Chlup
- Institute of Physics of Materials, The Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic
| | - Tomáš Kruml
- Institute of Physics of Materials, The Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic
| | - Oleksandr Galmiz
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - David Nečas
- Plasma Technologies for Materials, Central European Institute of Technology—CEITEC, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
| | - Lenka Zajíčková
- Plasma Technologies for Materials, Central European Institute of Technology—CEITEC, Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
- Department of Condensed Matter Physics, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
- Department of Theoretical and Experimental Electrical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 12, 616 00 Brno, Czech Republic
- Correspondence: (L.J.); (L.Z.)
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Ru M, Hai AM, Wang L, Yan S, Zhang Q. Recent progress in silk-based biosensors. Int J Biol Macromol 2022; 224:422-436. [DOI: 10.1016/j.ijbiomac.2022.10.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 10/05/2022] [Accepted: 10/15/2022] [Indexed: 11/05/2022]
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Biocompatibility of 3D-printed PLA, PEEK and PETG: Adhesion of Bone Marrow and Peritoneal Lavage Cells. Polymers (Basel) 2022; 14:polym14193958. [PMID: 36235903 PMCID: PMC9571806 DOI: 10.3390/polym14193958] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/11/2022] [Accepted: 09/17/2022] [Indexed: 11/28/2022] Open
Abstract
Samples in the form of cylindrical plates, additively manufactured using the fused deposition modelling (or filament freeform fabrication, FDM/FFF) technology from polylactide (PLA), polyethylene terephthalate glycol (PETG) and polyetheretherketone (PEEK), were studied in series of in-vitro experiments on the adhesion of rat bone-marrow cells and rat peritoneal cells. Methods of estimation of the absolute number of cells and polymer samples’ mass change were used for the evaluation of cells adhesion, followed by the evaluation of cell-culture supernatants. The results of experiments for both types of cells demonstrated a statistically significant change in the absolute number of cells (variation from 44 to 119%) and the weight of the polymer samples (variation from 0.61 to 2.18%), depending on roughness of sample surface, controlled by a nozzle diameter of a 3D printer as well as printing layer height. It was found that more cells adhere to PLA samples with a larger nozzle diameter and layer height. For PETG samples, the results did not show a clear relationship between cell adhesion and printing parameters. For PEEK samples, on the contrary, adhesion to samples printed with a lower nozzle diameter (higher resolution) is better than to samples printed with a larger nozzle diameter (lower resolution). The difference in results for various polymers can be explained by their chemical structure.
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Garzón H, Suárez LJ, Muñoz S, Cardona J, Fontalvo M, Alfonso-Rodríguez CA. Biomaterials Used for Periodontal Disease Treatment: Focusing on Immunomodulatory Properties. Int J Biomater 2022; 2022:7693793. [PMID: 35528847 PMCID: PMC9072036 DOI: 10.1155/2022/7693793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/23/2022] [Accepted: 03/05/2022] [Indexed: 12/25/2022] Open
Abstract
The growing use of biomaterials with different therapeutic purposes increases the need for their physiological understanding as well as to seek its integration with the human body. Chronic inflammatory local pathologies, generally associated with infectious or autoimmunity processes, have been a current therapeutic target due to the difficulty in their treatment. The recent development of biomaterials with immunomodulatory capacity would then become one of the possible strategies for their management in local pathologies, by intervening in situ, without generating alterations in the systemic immune response. The treatment of periodontal disease as an inflammatory entity has involved the use of different approaches and biomaterials. There is no conclusive, high evidence about the use of these biomaterials in the regeneration of periodontitis sequelae, so the profession keeps looking for other different strategies. The use of biomaterials with immunomodulatory properties could be one, with a promising future. This review of the literature summarizes the scientific evidence about biomaterials used in the treatment of periodontal disease.
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Affiliation(s)
- H. Garzón
- Grupo de Investigación en Salud Oral, Departamento de Periodoncia, Universidad Antonio Nariño, Bogotá, Colombia
| | - L. J. Suárez
- Departamento de Ciencias Básicas y Medicina Oral, Universidad Nacional de Colombia, Bogotá, Colombia
| | - S. Muñoz
- Grupo de Investigación en Salud Oral, Departamento de Periodoncia, Universidad Antonio Nariño, Bogotá, Colombia
| | - J. Cardona
- Grupo de Investigación en Salud Oral, Departamento de Periodoncia, Universidad Antonio Nariño, Bogotá, Colombia
| | - M. Fontalvo
- Grupo de Investigación en Salud Oral, Departamento de Periodoncia, Universidad Antonio Nariño, Bogotá, Colombia
| | - C. A. Alfonso-Rodríguez
- Grupo de Investigación en Salud Oral, Departamento de Periodoncia, Universidad Antonio Nariño, Bogotá, Colombia
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12
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Amri A, Chevallier P, Guay-Bégin AA, Bilem I, Gauvin G, Alamdari H, Heim F, Laroche G. Polyethylene terephthalate textile heart valve: How poly(ethylene glycol) grafting limits fibrosis. J Biomed Mater Res B Appl Biomater 2022; 110:2110-2120. [PMID: 35420261 DOI: 10.1002/jbm.b.35065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 02/24/2022] [Accepted: 03/21/2022] [Indexed: 11/11/2022]
Abstract
Transcatheter aortic valve replacement (TAVR) is an alternative technique to surgical valve replacement for over 300,000 patients worldwide. The valve material used in the TAVR is made of biological tissues, whose durability remains unknown. The success of the TAVR favors the research toward synthetic valve leaflet materials as an alternative to biological tissues. In particular, polyethylene terephthalate (PET) textile valves have recently proven durability over a 6-month period in animal sheep models. Excessive fibrotic tissue formation remains, however, a critical issue to be addressed. The aim of this work was therefore to investigate the potential of PET textiles covalently conjugated with polyethylene glycol (PEG), known for its antifouling properties, to modulate the fibrosis formation both in vitro and in vivo. For this purpose, the surfaces of heart valves made of PET textiles were functionalized with an atmospheric pressure plasma, leading to the formation of carboxylic acid (COOH) groups, further used for PEG-NH2 conjugation. Surface modification efficiency was assessed by X-ray photoelectron spectroscopy and water contact angle measurements. The biological behavior of the as-modified surfaces was evaluated by in vitro assays, using rat cardiac fibroblast cells. The results show that PEG treated substrates restrained the fibroblasts adhesion and proliferation. The PEG treated valve, implanted in a juvenile sheep model, showed a significant fibrosis reduction. The explant also revealed calcification issues that need to be addressed.
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Affiliation(s)
- Amna Amri
- Laboratoire d'ingénierie de surface (LIS), Centre de Recherche du CHU de Québec-Université Laval, Hôpital Saint-François d'Assise, Québec City, Québec, Canada.,Département de génie des mines, de la métallurgie et des matériaux, Centre de recherche sur les Matériaux Avancés, Université Laval, Québec City, Québec, Canada.,Laboratoire de Physique et Mécanique Textiles, GEPROVAS, Mulhouse, France
| | - Pascale Chevallier
- Laboratoire d'ingénierie de surface (LIS), Centre de Recherche du CHU de Québec-Université Laval, Hôpital Saint-François d'Assise, Québec City, Québec, Canada.,Département de génie des mines, de la métallurgie et des matériaux, Centre de recherche sur les Matériaux Avancés, Université Laval, Québec City, Québec, Canada
| | - Andrée-Anne Guay-Bégin
- Laboratoire d'ingénierie de surface (LIS), Centre de Recherche du CHU de Québec-Université Laval, Hôpital Saint-François d'Assise, Québec City, Québec, Canada.,Département de génie des mines, de la métallurgie et des matériaux, Centre de recherche sur les Matériaux Avancés, Université Laval, Québec City, Québec, Canada
| | - Ibrahim Bilem
- Laboratoire d'ingénierie de surface (LIS), Centre de Recherche du CHU de Québec-Université Laval, Hôpital Saint-François d'Assise, Québec City, Québec, Canada.,Département de génie des mines, de la métallurgie et des matériaux, Centre de recherche sur les Matériaux Avancés, Université Laval, Québec City, Québec, Canada
| | - Guillaume Gauvin
- Département de génie des mines, de la métallurgie et des matériaux, Centre de recherche sur les Matériaux Avancés, Université Laval, Québec City, Québec, Canada
| | - Houshang Alamdari
- Département de génie des mines, de la métallurgie et des matériaux, Centre de recherche sur les Matériaux Avancés, Université Laval, Québec City, Québec, Canada
| | - Frédéric Heim
- Laboratoire de Physique et Mécanique Textiles, GEPROVAS, Mulhouse, France
| | - Gaétan Laroche
- Laboratoire d'ingénierie de surface (LIS), Centre de Recherche du CHU de Québec-Université Laval, Hôpital Saint-François d'Assise, Québec City, Québec, Canada.,Département de génie des mines, de la métallurgie et des matériaux, Centre de recherche sur les Matériaux Avancés, Université Laval, Québec City, Québec, Canada
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Poly-2-methyl-2-oxazoline–modified bioprosthetic heart valve leaflets have enhanced biocompatibility and resist structural degeneration. Proc Natl Acad Sci U S A 2022; 119:2120694119. [PMID: 35131859 PMCID: PMC8833185 DOI: 10.1073/pnas.2120694119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2022] [Indexed: 12/26/2022] Open
Abstract
Bioprosthetic heart valves (BHV) fabricated from glutaraldehyde-fixed heterograft tissue, such as bovine pericardium (BP), are widely used for treating heart valve disease, a group of disorders that affects millions. Structural valve degeneration (SVD) of BHV due to both calcification and the accumulation of advanced glycation end products (AGE) with associated serum proteins limits durability. We hypothesized that BP modified with poly-2-methyl-2-oxazoline (POZ) to inhibit protein entry would demonstrate reduced accumulation of AGE and serum proteins, mitigating SVD. In vitro studies of POZ-modified BP demonstrated reduced accumulation of serum albumin and AGE. BP-POZ in vitro maintained collagen microarchitecture per two-photon microscopy despite AGE incubation, and in cell culture studies was associated with no change in tumor necrosis factor-α after exposure to AGE and activated macrophages. Comparing POZ and polyethylene glycol (PEG)–modified BP in vitro, BP-POZ was minimally affected by oxidative conditions, whereas BP-PEG was susceptible to oxidative deterioration. In juvenile rat subdermal implants, BP-POZ demonstrated reduced AGE formation and serum albumin infiltration, while calcification was not inhibited. However, BP-POZ rat subdermal implants with ethanol pretreatment demonstrated inhibition of both AGE accumulation and calcification. Ex vivo laminar flow studies with human blood demonstrated BP-POZ enhanced thromboresistance with reduced white blood cell accumulation. We conclude that SVD associated with AGE and serum protein accumulation can be mitigated through POZ functionalization that both enhances biocompatibility and facilitates ethanol pretreatment inhibition of BP calcification.
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Scoppola E, Gochev GG, Drnec J, Pithan L, Novikov D, Schneck E. Investigating the Conformation of Surface-Adsorbed Proteins with Standing-Wave X-ray Fluorescence. Biomacromolecules 2021; 22:5195-5203. [PMID: 34813296 DOI: 10.1021/acs.biomac.1c01136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Protein adsorption to surfaces is at the heart of numerous technological and bioanalytical applications, but sometimes, it is also associated with medical risks. To deepen our insights into processes involving layers of surface-adsorbed proteins, high-resolution structural information is essential. Here, we use standing-wave X-ray fluorescence (SWXF) in combination with an optimized liquid-cell setup to investigate the underwater conformation of the random-coiled phosphoprotein β-casein adsorbed to hydrophilic and hydrophobized solid surfaces. The orientation of the protein, as determined through the distributions of sulfur and phosphorus, is found to be sensitive to the chemical nature of the substrate. While no preferred orientations are observed on hydrophobized surfaces, on hydrophilic Al oxide, β-casein is adsorbed as a diblock copolymer with the phosphorylated domain I attached to the surface. Our results demonstrate that targeting biologically relevant chemical elements with SWXF enables a detailed investigation of biomolecular layers under near-physiological conditions.
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Affiliation(s)
- Ernesto Scoppola
- Biomaterials Department, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany
| | - Georgi G Gochev
- Biomaterials Department, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany.,Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 30-239 Krakow, Poland
| | - Jakub Drnec
- European Synchrotron Radiation Facility (ESRF), 38000 Grenoble, France
| | - Linus Pithan
- European Synchrotron Radiation Facility (ESRF), 38000 Grenoble, France
| | - Dmitri Novikov
- Deutsches Elektronen-Synchrotron (DESY), 22607 Hamburg, Germany
| | - Emanuel Schneck
- Biomaterials Department, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany.,Physics Department, Technische Universität Darmstadt, 64289 Darmstadt, Germany
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Douglass M, Hopkins S, Chug MK, Kim G, Garren MR, Ashcraft M, Nguyen DT, Tayag N, Handa H, Brisbois EJ. Reduction in Foreign Body Response and Improved Antimicrobial Efficacy via Silicone-Oil-Infused Nitric-Oxide-Releasing Medical-Grade Cannulas. ACS APPLIED MATERIALS & INTERFACES 2021; 13:52425-52434. [PMID: 34723458 DOI: 10.1021/acsami.1c18190] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Foreign body response and infection are two universal complications that occur with indwelling medical devices. In response, researchers have developed different antimicrobial and antifouling surface strategies to minimize bacterial colonization and fibrous encapsulation. In this study, the nitric oxide (NO) donor S-nitroso-N-acetylpenicillamine (SNAP) and silicone oil were impregnated into silicone rubber cannulas (SR-SNAP-Si) using a solvent swelling method to improve the antimicrobial properties and decrease the foreign body response. The fabricated SR-SNAP-Si cannulas demonstrated a stable, prolonged NO release, exhibited minimal SNAP leaching, and maintained sliding angles < 15° for 21 days. SR-SNAP-Si cannulas displayed enhanced antimicrobial efficacy against Staphylococcus aureus in a 7-day biofilm bioreactor study, reducing the viability of adhered bacteria by 99.2 ± 0.2% compared to unmodified cannulas while remaining noncytotoxic toward human fibroblast cells. Finally, SR-SNAP-Si cannulas were evaluated for the first time in a 14- and 21-day subcutaneous mouse model, showing significantly enhanced biocompatibility compared to control cannulas by reducing the thickness of fibrous encapsulation by 60.9 ± 6.1 and a 60.8 ± 10.5% reduction in cell density around the implant site after 3 weeks. Thus, this work demonstrates that antifouling, NO-releasing surfaces can improve the lifetime and safety of indwelling medical devices.
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Affiliation(s)
- Megan Douglass
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Sean Hopkins
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Manjyot Kaur Chug
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Gina Kim
- Office of Research, University Research Animal Resources, University of Georgia, Athens, Georgia 30602, United States
| | - Mark Richard Garren
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Morgan Ashcraft
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
- Pharmaceutical and Biomedical Sciences Department, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Dieu Thao Nguyen
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Nicole Tayag
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Hitesh Handa
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
- Pharmaceutical and Biomedical Sciences Department, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Elizabeth J Brisbois
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
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16
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Perera K, Ivone R, Natekin E, Wilga CA, Shen J, Menon JU. 3D Bioprinted Implants for Cartilage Repair in Intervertebral Discs and Knee Menisci. Front Bioeng Biotechnol 2021; 9:754113. [PMID: 34746106 PMCID: PMC8570130 DOI: 10.3389/fbioe.2021.754113] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/30/2021] [Indexed: 01/10/2023] Open
Abstract
Cartilage defects pose a significant clinical challenge as they can lead to joint pain, swelling and stiffness, which reduces mobility and function thereby significantly affecting the quality of life of patients. More than 250,000 cartilage repair surgeries are performed in the United States every year. The current gold standard is the treatment of focal cartilage defects and bone damage with nonflexible metal or plastic prosthetics. However, these prosthetics are often made from hard and stiff materials that limits mobility and flexibility, and results in leaching of metal particles into the body, degeneration of adjacent soft bone tissues and possible failure of the implant with time. As a result, the patients may require revision surgeries to replace the worn implants or adjacent vertebrae. More recently, autograft - and allograft-based repair strategies have been studied, however these too are limited by donor site morbidity and the limited availability of tissues for surgery. There has been increasing interest in the past two decades in the area of cartilage tissue engineering where methods like 3D bioprinting may be implemented to generate functional constructs using a combination of cells, growth factors (GF) and biocompatible materials. 3D bioprinting allows for the modulation of mechanical properties of the developed constructs to maintain the required flexibility following implantation while also providing the stiffness needed to support body weight. In this review, we will provide a comprehensive overview of current advances in 3D bioprinting for cartilage tissue engineering for knee menisci and intervertebral disc repair. We will also discuss promising medical-grade materials and techniques that can be used for printing, and the future outlook of this emerging field.
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Affiliation(s)
- Kalindu Perera
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, United States
| | - Ryan Ivone
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, United States
| | - Evelina Natekin
- Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK, United States
| | - Cheryl. A. Wilga
- Department of Biological Sciences, University of Rhode Island, Kingston, RI, United States
- Department of Electrical, Computer and Biomedical Engineering, University of Rhode Island, Kingston, RI, United States
| | - Jie Shen
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, United States
- Department of Chemical Engineering, University of Rhode Island, Kingston, RI, United States
| | - Jyothi U. Menon
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, United States
- Department of Chemical Engineering, University of Rhode Island, Kingston, RI, United States
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17
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Kharbikar BN, Chendke GS, Desai TA. Modulating the foreign body response of implants for diabetes treatment. Adv Drug Deliv Rev 2021; 174:87-113. [PMID: 33484736 PMCID: PMC8217111 DOI: 10.1016/j.addr.2021.01.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/30/2020] [Accepted: 01/10/2021] [Indexed: 02/06/2023]
Abstract
Diabetes Mellitus is a group of diseases characterized by high blood glucose levels due to patients' inability to produce sufficient insulin. Current interventions often require implants that can detect and correct high blood glucose levels with minimal patient intervention. However, these implantable technologies have not reached their full potential in vivo due to the foreign body response and subsequent development of fibrosis. Therefore, for long-term function of implants, modulating the initial immune response is crucial in preventing the activation and progression of the immune cascade. This review discusses the different molecular mechanisms and cellular interactions involved in the activation and progression of foreign body response (FBR) and fibrosis, specifically for implants used in diabetes. We also highlight the various strategies and techniques that have been used for immunomodulation and prevention of fibrosis. We investigate how these general strategies have been applied to implants used for the treatment of diabetes, offering insights on how these devices can be further modified to circumvent FBR and fibrosis.
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Affiliation(s)
- Bhushan N Kharbikar
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Gauree S Chendke
- University of California Berkeley - University of California San Francisco Graduate Program in Bioengineering, San Francisco, CA 94143, USA
| | - Tejal A Desai
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94143, USA; University of California Berkeley - University of California San Francisco Graduate Program in Bioengineering, San Francisco, CA 94143, USA; Department of Bioengineering, University of California, Berkeley, CA 94720, USA.
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18
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Surgical implantation of wireless, battery-free optoelectronic epidural implants for optogenetic manipulation of spinal cord circuits in mice. Nat Protoc 2021; 16:3072-3088. [PMID: 34031611 PMCID: PMC9273129 DOI: 10.1038/s41596-021-00532-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 03/04/2021] [Indexed: 02/02/2023]
Abstract
The use of optogenetics to regulate neuronal activity has revolutionized the study of the neural circuitry underlying a number of complex behaviors in rodents. Advances have been particularly evident in the study of brain circuitry and related behaviors, while advances in the study of spinal circuitry have been less striking because of technical hurdles. We have developed and characterized a wireless and fully implantable optoelectronic device that enables optical manipulation of spinal cord circuitry in mice via a microscale light-emitting diode (µLED) placed in the epidural space (NeuroLux spinal optogenetic device). This protocol describes how to surgically implant the device into the epidural space and then analyze light-induced behavior upon µLED activation. We detail optimized optical parameters for in vivo stimulation and demonstrate typical behavioral effects of optogenetic activation of nociceptive spinal afferents using this device. This fully wireless spinal µLED system provides considerable versatility for behavioral assays compared with optogenetic approaches that require tethering of animals, and superior temporal and spatial resolution when compared with other methods used for circuit manipulation such as chemogenetics. The detailed surgical approach and improved functionality of these spinal optoelectronic devices substantially expand the utility of this approach for the study of spinal circuitry and behaviors related to mechanical and thermal sensation, pruriception and nociception. The surgical implantation procedure takes ~1 h. The time required for the study of behaviors that are modulated by the light-activated circuit is variable and will depend upon the nature of the study.
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19
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Diaz-Rodriguez S, Rasser C, Mesnier J, Chevallier P, Gallet R, Choqueux C, Even G, Sayah N, Chaubet F, Nicoletti A, Ghaleh B, Feldman LJ, Mantovani D, Caligiuri G. Coronary stent CD31-mimetic coating favours endothelialization and reduces local inflammation and neointimal development in vivo. Eur Heart J 2021; 42:1760-1769. [PMID: 33580685 PMCID: PMC8106951 DOI: 10.1093/eurheartj/ehab027] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 10/12/2020] [Accepted: 01/12/2021] [Indexed: 12/14/2022] Open
Abstract
AIMS The rapid endothelialization of bare metal stents (BMS) is counterbalanced by inflammation-induced neointimal growth. Drug-eluting stents (DES) prevent leukocyte activation but impair endothelialization, delaying effective device integration into arterial walls. Previously, we have shown that engaging the vascular CD31 co-receptor is crucial for endothelial and leukocyte homeostasis and arterial healing. Furthermore, we have shown that a soluble synthetic peptide (known as P8RI) acts like a CD31 agonist. The aim of this study was to evaluate the effect of CD31-mimetic metal stent coating on the in vitro adherence of endothelial cells (ECs) and blood elements and the in vivo strut coverage and neointimal growth. METHODS AND RESULTS We produced Cobalt Chromium discs and stents coated with a CD31-mimetic peptide through two procedures, plasma amination or dip-coating, both yielding comparable results. We found that CD31-mimetic discs significantly reduced the extent of primary human coronary artery EC and blood platelet/leukocyte activation in vitro. In vivo, CD31-mimetic stent properties were compared with those of DES and BMS by coronarography and microscopy at 7 and 28 days post-implantation in pig coronary arteries (n = 9 stents/group/timepoint). Seven days post-implantation, only CD31-mimetic struts were fully endothelialized with no activated platelets/leukocytes. At day 28, neointima development over CD31-mimetic stents was significantly reduced compared to BMS, appearing as a normal arterial media with the absence of thrombosis contrary to DES. CONCLUSION CD31-mimetic coating favours vascular homeostasis and arterial wall healing, preventing in-stent stenosis and thrombosis. Hence, such coatings seem to improve the metal stent biocompatibility.
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Affiliation(s)
- Sergio Diaz-Rodriguez
- Laboratory for Biomaterials and Bioengineering (CRC-I) Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University, PLT-1745G, Québec, QC G1V 0A6, Canada
| | - Charlotte Rasser
- Laboratory for Vascular Translational Science, Université de Paris, Inserm U1148, 46 rue Henri HUCHARD, Paris 75018, France
| | - Jules Mesnier
- Laboratory for Vascular Translational Science, Université de Paris, Inserm U1148, 46 rue Henri HUCHARD, Paris 75018, France
| | - Pascale Chevallier
- Laboratory for Biomaterials and Bioengineering (CRC-I) Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University, PLT-1745G, Québec, QC G1V 0A6, Canada
| | - Romain Gallet
- Institut Mondor de Recherche Biomédicale, école nationale vétérinaire de Maisons-Alfort (ENVA), Institut National de la Santé et de la Recherche Médicale U955, GHU (Groupe Hospitalo-Universitaire) A. Chenevier, Henri Mondor Faculty of Medicine Paris Est, 8 Rue du Général Sarrail, Créteil 94010, France
| | - Christine Choqueux
- Laboratory for Vascular Translational Science, Université de Paris, Inserm U1148, 46 rue Henri HUCHARD, Paris 75018, France
| | - Guillaume Even
- Laboratory for Vascular Translational Science, Université de Paris, Inserm U1148, 46 rue Henri HUCHARD, Paris 75018, France
| | - Neila Sayah
- Laboratory for Vascular Translational Science, Université de Paris, Inserm U1148, 46 rue Henri HUCHARD, Paris 75018, France
| | - Frédéric Chaubet
- Laboratory for Vascular Translational Science, Université de Paris, Inserm U1148, 46 rue Henri HUCHARD, Paris 75018, France
| | - Antonino Nicoletti
- Laboratory for Vascular Translational Science, Université de Paris, Inserm U1148, 46 rue Henri HUCHARD, Paris 75018, France
| | - Bijan Ghaleh
- Institut Mondor de Recherche Biomédicale, école nationale vétérinaire de Maisons-Alfort (ENVA), Institut National de la Santé et de la Recherche Médicale U955, GHU (Groupe Hospitalo-Universitaire) A. Chenevier, Henri Mondor Faculty of Medicine Paris Est, 8 Rue du Général Sarrail, Créteil 94010, France
| | - Laurent J Feldman
- Laboratory for Vascular Translational Science, Université de Paris, Inserm U1148, 46 rue Henri HUCHARD, Paris 75018, France.,Department of Cardiology, Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val-de-Seine, Site Bichat, 46 rue Henri Huchard, Paris 75018, France
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering (CRC-I) Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University, PLT-1745G, Québec, QC G1V 0A6, Canada
| | - Giuseppina Caligiuri
- Laboratory for Vascular Translational Science, Université de Paris, Inserm U1148, 46 rue Henri HUCHARD, Paris 75018, France.,Department of Cardiology, Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val-de-Seine, Site Bichat, 46 rue Henri Huchard, Paris 75018, France
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20
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Dorris ER, Russell J, Murphy M. Post-intubation subglottic stenosis: aetiology at the cellular and molecular level. Eur Respir Rev 2021; 30:30/159/200218. [PMID: 33472959 PMCID: PMC9489001 DOI: 10.1183/16000617.0218-2020] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 09/20/2020] [Indexed: 02/07/2023] Open
Abstract
Subglottic stenosis (SGS) is a narrowing of the airway just below the vocal cords. This narrowing typically consists of fibrotic scar tissue, which may be due to a variety of diseases. This review focuses on post-intubation (PI) SGS. SGS can result in partial or complete narrowing of the airway. This narrowing is caused by fibrosis and can cause serious breathing difficulties. It can occur in both adults and children. The pathogenesis of post-intubation SGS is not well understood; however, it is considered to be the product of an abnormal healing process. This review discusses how intubation can change the local micro-environment, leading to dysregulated tissue repair. We discuss how mucosal inflammation, local hypoxia and biomechanical stress associated with intubation can promote excess tissue deposition that occurs during the pathological process of SGS. COVID-19 may cause an increased incidence of subglottic stenosis (SGS). In this review, the cellular and molecular aetiology of post-intubation SGS is outlined and we discuss how better knowledge of the underlying biology can inform SGS management.https://bit.ly/2RSliRK
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Affiliation(s)
- Emma R Dorris
- National Children's Research Centre, Our Lady's Children's Hospital, Dublin, Ireland .,School of Medicine, University College Dublin, Dublin, Ireland
| | - John Russell
- Children's Hospital Ireland Crumlin, Dublin, Ireland
| | - Madeline Murphy
- National Children's Research Centre, Our Lady's Children's Hospital, Dublin, Ireland.,School of Medicine, University College Dublin, Dublin, Ireland
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Slippery Liquid-Infused Porous Polymeric Surfaces Based on Natural Oil with Antimicrobial Effect. Polymers (Basel) 2021; 13:polym13020206. [PMID: 33430082 PMCID: PMC7826890 DOI: 10.3390/polym13020206] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/11/2020] [Accepted: 01/05/2021] [Indexed: 01/31/2023] Open
Abstract
Many polymer materials have found a wide variety of applications in biomedical industries due to their excellent mechanical properties. However, the infections associated with the biofilm formation represent serious problems resulting from the initial bacterial attachment on the polymeric surface. The development of novel slippery liquid-infused porous surfaces (SLIPSs) represents promising method for the biofilm formation prevention. These surfaces are characterized by specific microstructural roughness able to hold lubricants inside. The lubricants create a slippery layer for the repellence of various liquids, such as water and blood. In this study, effective antimicrobial modifications of polyethylene (PE) and polyurethane (PU), as commonly used medical polymers, were investigated. For this purpose, low-temperature plasma treatment was used initially for activation of the polymeric surface, thereby enhancing surface and adhesion properties. Subsequently, preparation of porous microstructures was achieved by electrospinning technique using polydimethylsiloxane (PDMS) in combination with polyamide (PA). Finally, natural black seed oil (BSO) infiltrated the produced fiber mats acting as a lubricating layer. The optimized fiber mats' production was achieved using PDMS/PA mixture at ratio 1:1:20 (g/g/mL) using isopropyl alcohol as solvent. The surface properties of produced slippery surfaces were analyzed by various microscopic and optics techniques to obtain information about wettability, sliding behavior and surface morphology/topography. The modified PE and PU substrates demonstrated slippery behavior of an impinged water droplet at a small tilting angle. Moreover, the antimicrobial effects of the produced SLIPs using black seed oil were proven against Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli).
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Lebaudy E, Fournel S, Lavalle P, Vrana NE, Gribova V. Recent Advances in Antiinflammatory Material Design. Adv Healthc Mater 2021; 10:e2001373. [PMID: 33052031 DOI: 10.1002/adhm.202001373] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/28/2020] [Indexed: 12/14/2022]
Abstract
Implants and prostheses are widely used to replace damaged tissues or to treat various diseases. However, besides the risk of bacterial or fungal infection, an inflammatory response usually occurs. Here, recent progress in the field of anti-inflammatory biomaterials is described. Different materials and approaches are used to decrease the inflammatory response, including hydrogels, nanoparticles, implant surface coating by polymers, and a variety of systems for anti-inflammatory drug delivery. Complex multifunctional systems dealing with inflammation, microbial infection, bone regeneration, or angiogenesis are also described. New promising stimuli-responsive systems, such as pH- and temperature-responsive materials, are also being developed that would enable an "intelligent" antiinflammatory response when the inflammation occurs. Together, different approaches hold promise for creation of novel multifunctional smart materials allowing better implant integration and tissue regeneration.
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Affiliation(s)
- Eloïse Lebaudy
- Institut National de la Santé et de la Recherche Médicale INSERM Unité 1121 Biomaterials and Bioengineering 11 rue Humann Strasbourg Cedex 67085 France
- Faculté de Chirurgie Dentaire Université de Strasbourg Strasbourg 67000 France
| | - Sylvie Fournel
- Université de Strasbourg CNRS 3Bio team Laboratoire de Conception et Application de Molécules Bioactives UMR 7199 Faculté de Pharmacie 74 route du Rhin Illkirch Cedex 67401 France
| | - Philippe Lavalle
- Institut National de la Santé et de la Recherche Médicale INSERM Unité 1121 Biomaterials and Bioengineering 11 rue Humann Strasbourg Cedex 67085 France
- Faculté de Chirurgie Dentaire Université de Strasbourg Strasbourg 67000 France
- SPARTHA Medical 14B Rue de la Canardiere Strasbourg 67100 France
| | | | - Varvara Gribova
- Institut National de la Santé et de la Recherche Médicale INSERM Unité 1121 Biomaterials and Bioengineering 11 rue Humann Strasbourg Cedex 67085 France
- Faculté de Chirurgie Dentaire Université de Strasbourg Strasbourg 67000 France
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Sánchez-Bodón J, Ruiz-Rubio L, Hernáez-Laviña E, Vilas-Vilela JL, Moreno-Benítez MI. Poly(l-lactide)-Based Anti-Inflammatory Responsive Surfaces for Surgical Implants. Polymers (Basel) 2020; 13:polym13010034. [PMID: 33374150 PMCID: PMC7794694 DOI: 10.3390/polym13010034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/17/2020] [Accepted: 12/22/2020] [Indexed: 12/23/2022] Open
Abstract
In the last few decades, surgical implants have been widely used to restore the function of damaged bones or joints. However, it is essential to receive antibiotic or anti-inflammatory treatment to circumvent significant problems associated, such as the colonization of the implanted surface by bacteria or other microorganisms and strong host inflammatory responses. This article presents the effectiveness of the copper catalyzed alkyne-azide cycloaddition (CuAAC) (“click”) reaction by the linkage of a fluorophore to the poly(L-lactide) (PLLA) surface. The results were analysed by means of X-ray photoelectron spectroscopy (XPS), contact angle and fluorescence microscopy. Moreover, this current work describes the covalent immobilization of the anti-inflammatory drug indomethacin on a PLLA surface. The CuAAC click reaction was selected to anchor the drug to the polymeric films. The successful bioconjugation of the drug was confirmed by XPS and the change on the contact angle.
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Affiliation(s)
- Julia Sánchez-Bodón
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain; (L.R.-R.); (E.H.-L.); (J.L.V.-V.)
- Correspondence: (J.S.-B.); (M.I.M.-B.); Tel.: +34-61-9083-458 (J.S.-B.); +34-94-6015-983 (M.I.M.-B.)
| | - Leire Ruiz-Rubio
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain; (L.R.-R.); (E.H.-L.); (J.L.V.-V.)
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Estíbaliz Hernáez-Laviña
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain; (L.R.-R.); (E.H.-L.); (J.L.V.-V.)
| | - José Luis Vilas-Vilela
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain; (L.R.-R.); (E.H.-L.); (J.L.V.-V.)
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Mª Isabel Moreno-Benítez
- Macromolecular Chemistry Group (LABQUIMAC), Department of Organic and Inorganic Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
- Correspondence: (J.S.-B.); (M.I.M.-B.); Tel.: +34-61-9083-458 (J.S.-B.); +34-94-6015-983 (M.I.M.-B.)
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24
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Jaquins-Gerstl A, Michael AC. Dexamethasone-Enhanced Microdialysis and Penetration Injury. Front Bioeng Biotechnol 2020; 8:602266. [PMID: 33364231 PMCID: PMC7752925 DOI: 10.3389/fbioe.2020.602266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 11/11/2020] [Indexed: 01/25/2023] Open
Abstract
Microdialysis probes, electrochemical microsensors, and neural prosthetics are often used for in vivo monitoring, but these are invasive devices that are implanted directly into brain tissue. Although the selectivity, sensitivity, and temporal resolution of these devices have been characterized in detail, less attention has been paid to the impact of the trauma they inflict on the tissue or the effect of any such trauma on the outcome of the measurements they are used to perform. Factors affecting brain tissue reaction to the implanted devices include: the mechanical trauma during insertion, the foreign body response, implantation method, and physical properties of the device (size, shape, and surface characteristics. Modulation of the immune response is an important step toward making these devices with reliable long-term performance. Local release of anti-inflammatory agents such as dexamethasone (DEX) are often used to mitigate the foreign body response. In this article microdialysis is used to locally deliver DEX to the surrounding brain tissue. This work discusses the immune response resulting from microdialysis probe implantation. We briefly review the principles of microdialysis and the applications of DEX with microdialysis in (i) neuronal devices, (ii) dopamine and fast scan cyclic voltammetry, (iii) the attenuation of microglial cells, (iv) macrophage polarization states, and (v) spreading depolarizations. The difficulties and complexities in these applications are herein discussed.
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25
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Stojanović S, AlKhoury H, Radenković M, Cvetković V, Jablonska M, Schmelzer CEH, Syrowatka F, Živković JM, Groth T, Najman S. Tissue response to biphasic calcium phosphate covalently modified with either heparin or hyaluronic acid in a mouse subcutaneous implantation model. J Biomed Mater Res A 2020; 109:1353-1365. [PMID: 33128275 DOI: 10.1002/jbm.a.37126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 10/25/2020] [Accepted: 10/28/2020] [Indexed: 12/18/2022]
Abstract
Biphasic calcium phosphate (BCP) materials are widely employed as bone substitute materials due to their resorption/degradation properties. Inflammation after implantation of such materials represents a prerequisite for bone tissue repair and regeneration but can be also problematic if it is not only transient and if it is followed by fibrosis and scarring. Here, we modified BCP covalently with hyaluronan (HA) and heparin (Hep), glycosaminoglycans that possess anti-inflammatory properties. Beside the characterization of particle surface properties, the focus was on in vivo tissue response after subcutaneous implantation in mice. Histological analysis revealed a decrease in signs of inflammatory response to BCP when modified with either HA or Hep. Reduced vascularization after 30 days was noticed when BCP was modified with either HA or Hep with greater cellularity in all examined time points. Compared to plain BCP, expression of endothelial-related genes Flt1 and Vcam1 was higher in BCP-HA and BCP-Hep group at day 30. Expression of osteogenesis-related genes Sp7 and Bglap after 30 days was the highest in BCP group, followed by BCP-Hep, while the lowest expression was in BCP-HA group which correlates with collagen amount. Hence, coating of BCP particles with HA seems to suppress inflammatory response together with formation of new bone-like tissue, while the presence of Hep delays the onset of inflammatory response but permits osteogenesis in this subcutaneous bone-forming model. Transferring the results of this study to other coated materials intended for biomedical application may also pave the way to reduction of inflammation after their implantation.
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Affiliation(s)
- Sanja Stojanović
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, Niš, Serbia.,Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Hala AlKhoury
- Department Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle Wittenberg, Halle (Saale), Germany.,Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Milena Radenković
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Vladimir Cvetković
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Niš, Serbia
| | - Magdalena Jablonska
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany
| | - Christian E H Schmelzer
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany
| | - Frank Syrowatka
- Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Jelena M Živković
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, Niš, Serbia.,Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Thomas Groth
- Department Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle Wittenberg, Halle (Saale), Germany.,Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,Laboratory of Biomedical Nanotechnologies, Institute of Bionic Technologies and Engineering, I.M. Sechenov First Moscow State University, Moscow, Russian Federation
| | - Stevo Najman
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, Niš, Serbia.,Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Niš, Serbia
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Ma R, Li Y, Wang J, Yang P, Wang K, Wang W. Incorporation of nanosized calcium silicate improved osteointegration of polyetheretherketone under diabetic conditions. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:98. [PMID: 33130931 DOI: 10.1007/s10856-020-06435-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
Diabetes can impair osteoblastic functions and negatively interfere with osteointegration at the bone/implant interface. Previously, we prepared a nanosized calcium silicate (CS) incorporated-polyetheretherketone (PK) biocomposite (CS/PK) and found that the CS/PK composite exhibited enhanced osteoblast functions in vitro and osteointegration in vivo, but its bioperformance under diabetic conditions remained elusive. In this study, MC3T3-E1 cells incubated on CS/PK and PK samples were subjected to diabetic serum (DS) and normal serum (NS); cell attachment, morphology, spreading, proliferation, and osteogenic differentiation were compared to assess in vitro osteoblastic functions on the surfaces of different materials. An in vivo test was performed on diabetic rabbits implanted with CS/PK or PK implants into the cranial bone defect to assess the osteointegration ability of the implants. In vitro results showed that diabetes inhibited osteoblastic functions evidenced by impaired morphology and spreading, and decreased attachment, proliferation, and osteogenic differentiation compared with the findings under normal conditions. Notably, CS/PK ameliorated osteoblastic disfunction under diabetic conditions in vitro. In vivo results from micro-CT and histologic examinations revealed that rabbits with CS/PK implants exhibited improved osteointegration at the bone/implant interface under diabetic conditions compared with PK. Therefore, the CS/PK composite improved the impaired osteointegration induced by diabetes and is a promising orthopedic or craniofacial implant material that may obtain good clinical performance in diabetic patients.
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Affiliation(s)
- Rui Ma
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shanxi, China
| | - Yongwei Li
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shanxi, China
| | - Jialin Wang
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shanxi, China
| | - Pei Yang
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shanxi, China
| | - Kunzheng Wang
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shanxi, China.
| | - Wei Wang
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shanxi, China.
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New injectable self-assembled hydrogels that promote angiogenesis through a bioactive degradation product. Acta Biomater 2020; 115:197-209. [PMID: 32814142 DOI: 10.1016/j.actbio.2020.08.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/27/2020] [Accepted: 08/10/2020] [Indexed: 12/12/2022]
Abstract
Hydrogels used in regenerative medicine are often designed to allow cellular infiltration, degradation, and neovascularization. Low molecular weight hydrogels (LMWHs), formed by self-assembly via non-covalent interactions, are gaining significant interest because they are soft, easy to use and injectable. We propose LMWHs as suitable body implant materials that can stimulate tissue regeneration. We produced four new LMWHs with molecular entities containing nucleic acid and lipid building blocks and analyzed the foreign body response upon subcutaneous implantation into mice. Despite being infiltrated with macrophages, none of the hydrogels triggered detrimental inflammatory responses. Most macrophages present in the hydrogel-surrounding tissue acquired an immuno-modulatory rather than inflammatory phenotype. Concomitantly, no fibrotic capsule was formed after three weeks. Our glyconucleolipid LMWHs exhibited different degradation kinetics in vivo and in vitro. LMWHs with high angiogenic properties in vivo, were found to release glyconucleoside (glucose covalently linked to thymidine via a triazole moiety) as a common by-product of in vitro LMWH degradation. Chemically synthesized glyconucleoside exhibited angiogenic properties in vitro in scratch assays with monolayers of human endothelial cells and in vivo using the chick chorioallantoic membrane assay. Collectively, LMWHs hold promise as efficient scaffolds for various regenerative applications by displaying good biointegration without causing fibrosis, and by promoting angiogenesis through the release of a pro-angiogenic degradation product. STATEMENT OF SIGNIFICANCE: The main limitations of biomaterials developed in the field of tissue engineering remains their biocompatibility and vascularisation properties. In this context, we developed injectable Low Molecular Weight Hydrogels (LMWH) exhibiting thixotropic (reversible gelation) and thermal reversible properties. LMWH having injectability is of great advantage since it allows for their delivery without wounding the surrounding tissues. The resulting gels aim at forming scaffolds that the host cells colonize without major inflammation, and that won't be insulated by a strong fibrosis reaction. Importantly, their molecular degradation releases a product (a glycosyl-nucleoside conjugate) promoting angiogenesis. In this sense, these LMWH represent an important advance in the development of biomaterials promoting tissue regeneration.
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Romero-Montero A, Del Valle LJ, Puiggalí J, Montiel C, García-Arrazola R, Gimeno M. Poly(gallic acid)-coated polycaprolactone inhibits oxidative stress in epithelial cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 115:111154. [PMID: 32600735 DOI: 10.1016/j.msec.2020.111154] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/28/2020] [Accepted: 06/02/2020] [Indexed: 11/19/2022]
Abstract
Enzymatic mediated poly (gallic acid) (PGAL), a stable multiradical polyanion with helicoidal secondary structure and high antioxidant capacity, was successfully grafted to poly(ε-caprolactone) (PCL) using UV-photo induction. PCL films were prepared with several levels of roughness and subsequently grafted with PGAL (PCL-g-PGAL). The results on the full characterization of the produced materials by mechanical tests, surface morphology, and topography, thermal and crystallographic analyses, as well as wettability and cell protection activity against oxidative stress, were adequate for tissue regeneration. The in vitro biocompatibility was then assessed with epithelial-like cells showing excellent adhesion and proliferation onto the PCL-g-PGAL films, most importantly, PCL-g-PGAL displayed a good ability to protect cell cultures on their surface against reactive oxygen species. These biomaterials can consequently be considered as novel biocompatible and antioxidant films with high-responsiveness for biomedical or tissue engineering applications.
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Affiliation(s)
- Alejandra Romero-Montero
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, 04510 CDMX, Mexico
| | - Luis J Del Valle
- Chemical Engineering Department, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona, Spain
| | - Jordi Puiggalí
- Chemical Engineering Department, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain
| | - Carmina Montiel
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, 04510 CDMX, Mexico
| | - Roeb García-Arrazola
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, 04510 CDMX, Mexico
| | - Miquel Gimeno
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, 04510 CDMX, Mexico.
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Abstract
A major function of the immune system is to detect threat from foreign invaders, tissue damage, or cancer and to mount a counter response that resolves the threat, restores homeostasis, and supplies immunological memory to prevent a second assault. Our increasing understanding of the immune system has opened up numerous avenues for modulating immune responses against infections, cancer, and autoimmunity. However, agents used for immunomodulation have been traditionally administered systemically via bolus injection, leading to unintended consequences by disrupting homeostasis at nontarget sites. Consequently, systemic hyperactivation and hypoactivation can result from bolus administration of immune-activators and immunosuppressants, respectively. Macroscale biomaterial scaffolds can instead be placed at the intended target site to provide both localized, controlled release of immunomodulatory agents and control over local immune cell trafficking and function, potentially maximizing therapeutic efficacy and limiting systemic exposure. These scaffolds have found utility in the area of cancer immunotherapy, especially in situ cancer vaccination where controlled release of factors such as granulocyte-macrophage colony-stimulating factor (GM-CSF) and the local presentation of tumor antigen and danger signals lead to the recruitment of immature dendritic cells and facilitate their activation and antigen presentation. These cells eventually migrate into secondary lymphoid organs where they prime tumor specific T cells for downstream tumor clearance. Scaffolds can also be used in adoptive T cell therapy to generate large numbers of potent antigen specific T cells or chimeric antigen receptor (CAR) T cells in vitro for subsequent delivery to patients. Macroscale biomaterial scaffolds have also found utility beyond cancer immunotherapy and have been developed to promote immune tolerance by regulatory T cell induction and to expedite tissue regeneration. The design of these macroscale biomaterial scaffolds considers their biocompatibility, biodegradability, mode of delivery, porosity, and kinetics of therapeutic cargo release. Consequently, the numerous approaches that have been developed to fabricate biomaterial scaffolds are aimed at tuning these parameters to achieve the desired therapeutic outcome. This Account will discuss the use of biomaterial scaffolds as niches for immunomodulation and will focus on (1) approaches that have been used to fabricate various biomaterial systems being employed as niches for immunomodulation and (2) how these biomaterial systems have been used to modulate immune responses, specifically in area of cancer immunotherapy, where we will discuss the role of macroscale biomaterial scaffolds for in situ vaccination and in vitro T cell expansion. We will also briefly discuss the utility of biomaterial scaffolds beyond cancer, drawing examples from tolerance and tissue regeneration.
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Affiliation(s)
- Kwasi Adu-Berchie
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
- The Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States
| | - David J. Mooney
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
- The Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States
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Kupka V, Dvořáková E, Manakhov A, Michlíček M, Petruš J, Vojtová L, Zajíčková L. Well-Blended PCL/PEO Electrospun Nanofibers with Functional Properties Enhanced by Plasma Processing. Polymers (Basel) 2020; 12:polym12061403. [PMID: 32580496 PMCID: PMC7362260 DOI: 10.3390/polym12061403] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/11/2020] [Accepted: 06/17/2020] [Indexed: 12/31/2022] Open
Abstract
Biodegradable composite nanofibers were electrospun from poly(ε-caprolactone) (PCL) and poly(ethylene oxide) (PEO) mixtures dissolved in acetic and formic acids. The variation of PCL:PEO concentration in the polymer blend, from 5:95 to 75:25, revealed the tunability of the hydrolytic stability and mechanical properties of the nanofibrous mats. The degradation rate of PCL/PEO nanofibers can be increased compared to pure PCL, and the mechanical properties can be improved compared to pure PEO. Although PCL and PEO have been previously reported as immiscible, the electrospinning into nanofibers having restricted dimensions (250–450 nm) led to a microscopically mixed PCL/PEO blend. However, the hydrolytic stability and tensile tests revealed the segregation of PCL into few-nanometers-thin fibrils in the PEO matrix of each nanofiber. A synergy phenomenon of increased stiffness appeared for the high concentration of PCL in PCL/PEO nanofibrous mats. The pure PCL and PEO mats had a Young’s modulus of about 12 MPa, but the mats made of high concentration PCL in PCL/PEO solution exhibited 2.5-fold higher values. The increase in the PEO content led to faster degradation of mats in water and up to a 20-fold decrease in the nanofibers’ ductility. The surface of the PCL/PEO nanofibers was functionalized by an amine plasma polymer thin film that is known to increase the hydrophilicity and attach proteins efficiently to the surface. The combination of different PCL/PEO blends and amine plasma polymer coating enabled us to tune the surface functionality, the hydrolytic stability, and the mechanical properties of biodegradable nanofibrous mats.
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Affiliation(s)
- Vojtěch Kupka
- Central European Institute of Technology—CEITEC, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic; (V.K.); (J.P.); (L.V.)
- Regional Centre of Advanced Technologies and Materials and Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17 Listopadu 12, 77900 Olomouc, Czech Republic
| | - Eva Dvořáková
- Central European Institute of Technology—CEITEC, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic; (E.D.); (A.M.); (M.M.)
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 61137 Brno, Czech Republic
| | - Anton Manakhov
- Central European Institute of Technology—CEITEC, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic; (E.D.); (A.M.); (M.M.)
- Laboratory of Inorganic Nanomaterials, National University of Science and Technology “MISiS”, Leninsky Prospect 4, 119049 Moscow, Russia
| | - Miroslav Michlíček
- Central European Institute of Technology—CEITEC, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic; (E.D.); (A.M.); (M.M.)
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 61137 Brno, Czech Republic
| | - Josef Petruš
- Central European Institute of Technology—CEITEC, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic; (V.K.); (J.P.); (L.V.)
- Institute of Materials Chemistry, Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 61200 Brno, Czech Republic
| | - Lucy Vojtová
- Central European Institute of Technology—CEITEC, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic; (V.K.); (J.P.); (L.V.)
| | - Lenka Zajíčková
- Central European Institute of Technology—CEITEC, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic; (V.K.); (J.P.); (L.V.)
- Central European Institute of Technology—CEITEC, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic; (E.D.); (A.M.); (M.M.)
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 61137 Brno, Czech Republic
- Correspondence:
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Yu C, Xing M, Wang L, Guan G. Effects of aligned electrospun fibers with different diameters on hemocompatibility, cell behaviors and inflammation in vitro. Biomed Mater 2020; 15:035005. [DOI: 10.1088/1748-605x/ab673c] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Martins JA, Lach AA, Morris HL, Carr AJ, Mouthuy PA. Polydioxanone implants: A systematic review on safety and performance in patients. J Biomater Appl 2019; 34:902-916. [PMID: 31771403 PMCID: PMC7044756 DOI: 10.1177/0885328219888841] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Joana A Martins
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Antonina A Lach
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Hayley L Morris
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Andrew J Carr
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.,NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, United Kingdom
| | - Pierre-Alexis Mouthuy
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.,NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, United Kingdom
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Yang JC, Mun J, Kwon SY, Park S, Bao Z, Park S. Electronic Skin: Recent Progress and Future Prospects for Skin-Attachable Devices for Health Monitoring, Robotics, and Prosthetics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1904765. [PMID: 31538370 DOI: 10.1002/adma.201904765] [Citation(s) in RCA: 488] [Impact Index Per Article: 97.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/26/2019] [Indexed: 05/17/2023]
Abstract
Recent progress in electronic skin or e-skin research is broadly reviewed, focusing on technologies needed in three main applications: skin-attachable electronics, robotics, and prosthetics. First, since e-skin will be exposed to prolonged stresses of various kinds and needs to be conformally adhered to irregularly shaped surfaces, materials with intrinsic stretchability and self-healing properties are of great importance. Second, tactile sensing capability such as the detection of pressure, strain, slip, force vector, and temperature are important for health monitoring in skin attachable devices, and to enable object manipulation and detection of surrounding environment for robotics and prosthetics. For skin attachable devices, chemical and electrophysiological sensing and wireless signal communication are of high significance to fully gauge the state of health of users and to ensure user comfort. For robotics and prosthetics, large-area integration on 3D surfaces in a facile and scalable manner is critical. Furthermore, new signal processing strategies using neuromorphic devices are needed to efficiently process tactile information in a parallel and low power manner. For prosthetics, neural interfacing electrodes are of high importance. These topics are discussed, focusing on progress, current challenges, and future prospects.
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Affiliation(s)
- Jun Chang Yang
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Jaewan Mun
- Department of Chemical Engineering, Stanford University, Stanford, CA, 94305-5025, USA
| | - Se Young Kwon
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Seongjun Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Zhenan Bao
- Department of Chemical Engineering, Stanford University, Stanford, CA, 94305-5025, USA
| | - Steve Park
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
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Stankevich KS, Schepetkin IA, Goreninskii SI, Lavrinenko AK, Bolbasov EN, Kovrizhina AR, Kirpotina LN, Filimonov VD, Khlebnikov AI, Tverdokhlebov SI, Quinn MT. Poly(ε-caprolactone) Scaffolds Doped with c-Jun N-terminal Kinase Inhibitors Modulate Phagocyte Activation. ACS Biomater Sci Eng 2019; 5:5990-5999. [DOI: 10.1021/acsbiomaterials.9b01401] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ksenia S. Stankevich
- National Research Tomsk Polytechnic University, 36 Lenin Avenue, Tomsk 634050, Russia
- Department of Microbiology and Immunology, Montana State University, 109 Lewis Hall, Bozeman, Montana 59717, United States
| | - Igor A. Schepetkin
- Department of Microbiology and Immunology, Montana State University, 109 Lewis Hall, Bozeman, Montana 59717, United States
| | - Semen I. Goreninskii
- National Research Tomsk Polytechnic University, 36 Lenin Avenue, Tomsk 634050, Russia
| | | | - Evgeniy N. Bolbasov
- National Research Tomsk Polytechnic University, 36 Lenin Avenue, Tomsk 634050, Russia
- National Research Tomsk State University, 30 Lenin Avenue, Tomsk 634050, Russia
| | | | - Liliya N. Kirpotina
- Department of Microbiology and Immunology, Montana State University, 109 Lewis Hall, Bozeman, Montana 59717, United States
| | - Victor D. Filimonov
- National Research Tomsk Polytechnic University, 36 Lenin Avenue, Tomsk 634050, Russia
| | - Andrei I. Khlebnikov
- National Research Tomsk Polytechnic University, 36 Lenin Avenue, Tomsk 634050, Russia
- Scientific Research Institute of Biological Medicine, Altai State University, 61 Lenin Avenue, Barnaul 656049, Russia
| | | | - Mark T. Quinn
- Department of Microbiology and Immunology, Montana State University, 109 Lewis Hall, Bozeman, Montana 59717, United States
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Alotaibi HF, Perni S, Prokopovich P. Nanoparticle-based model of anti-inflammatory drug releasing LbL coatings for uncemented prosthesis aseptic loosening prevention. Int J Nanomedicine 2019; 14:7309-7322. [PMID: 31571855 PMCID: PMC6750844 DOI: 10.2147/ijn.s217112] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 07/27/2019] [Indexed: 02/06/2023] Open
Abstract
Introduction The only treatment for aseptic loosening is the replacement of the prosthesis through revision surgery. A preventive approach, achieved through anti-inflammatory drugs released from the device, has shown to be a viable strategy; however, the performance of these devices is not yet satisfactory thus further improvements are necessary. Methods We used titanium nanoparticles as a model for implant surfaces and developed a coating containing dexamethasone (DEX) using layer-by-layer deposition. Results The amount of deposited drug depended on the number of layers and the release was sustained for months. The efficiency of the released DEX in reducing inflammation markers (tumor necrosis factor alpha and IL-6) produced by human monocytes and macrophages was similar to the pure drug at the same concentration without negative impacts on the viability and morphology of these cells. Conclusion These coatings were not inferior to medical grade titanium (the standard material used in uncemented devices) regarding their ability to sustain osteoblasts and fibroblasts growth.
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Affiliation(s)
| | - Stefano Perni
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK
| | - Polina Prokopovich
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK
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Espona-Noguera A, Ciriza J, Cañibano-Hernández A, Villa R, Saenz del Burgo L, Alvarez M, Pedraz JL. 3D printed polyamide macroencapsulation devices combined with alginate hydrogels for insulin-producing cell-based therapies. Int J Pharm 2019; 566:604-614. [DOI: 10.1016/j.ijpharm.2019.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/14/2019] [Accepted: 06/04/2019] [Indexed: 12/23/2022]
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Cardiac fibrosis: potential therapeutic targets. Transl Res 2019; 209:121-137. [PMID: 30930180 PMCID: PMC6545256 DOI: 10.1016/j.trsl.2019.03.001] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/01/2019] [Accepted: 03/05/2019] [Indexed: 01/14/2023]
Abstract
Cardiovascular disease is a leading cause of mortality in the world and is exacerbated by the presence of cardiac fibrosis, defined by the accumulation of noncontractile extracellular matrix proteins. Cardiac fibrosis is directly linked to cardiac dysfunction and increased risk of arrhythmia. Despite its prevalence, there is a lack of efficacious therapies for inhibiting or reversing cardiac fibrosis, largely due to the complexity of the cell types and signaling pathways involved. Ongoing research has aimed to understand the mechanisms of cardiac fibrosis and develop new therapies for treating scar formation. Major approaches include preventing the formation of scar tissue and replacing fibrous tissue with functional cardiomyocytes. While targeting the renin-angiotensin-aldosterone system is currently used as the standard line of therapy for heart failure, there has been increased interest in inhibiting the transforming growth factor-β signaling pathway due its established role in cardiac fibrosis. Significant advances in cell transplantation therapy and biomaterials engineering have also demonstrated potential in regenerating the myocardium. Novel techniques, such as cellular direct reprogramming, and molecular targets, such as noncoding RNAs and epigenetic modifiers, are uncovering novel therapeutic options targeting fibrosis. This review provides an overview of current approaches and discuss future directions for treating cardiac fibrosis.
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Meng T, Kulkarni V, Simmers R, Brar V, Xu Q. Therapeutic implications of nanomedicine for ocular drug delivery. Drug Discov Today 2019; 24:1524-1538. [PMID: 31102733 DOI: 10.1016/j.drudis.2019.05.006] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/21/2019] [Accepted: 05/07/2019] [Indexed: 01/01/2023]
Abstract
Delivering therapeutics to the eye is challenging on multiple levels: rapid clearance of eyedrops from the ocular surface requires frequent instillation, which is difficult for patients; transport of drugs across the blood-retinal barrier when drugs are administered systemically, and the cornea when drugs are administered topically, is difficult to achieve; limited drug penetration to the back of the eye owing to the cornea, conjunctiva, sclera and vitreous barriers. Nanomedicine offers many advantages over conventional ophthalmic medications for effective ocular drug delivery because nanomedicine can increase the therapeutic index by overcoming ocular barriers, improving drug-release profiles and reducing potential drug toxicity. In this review, we highlight the therapeutic implications of nanomedicine for ocular drug delivery.
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Affiliation(s)
- Tuo Meng
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Vineet Kulkarni
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Russell Simmers
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; Department of Physics, College of Humanities & Sciences, Virginia Commonwealth University, Richmond, VA 23284, USA
| | - Vikram Brar
- Department of Ophthalmology, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Qingguo Xu
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; Department of Ophthalmology, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA; Massey Cancer Center, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA.
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Kleber C, Lienkamp K, Rühe J, Asplund M. Electrochemically Controlled Drug Release from a Conducting Polymer Hydrogel (PDMAAp/PEDOT) for Local Therapy and Bioelectronics. Adv Healthc Mater 2019; 8:e1801488. [PMID: 30835957 DOI: 10.1002/adhm.201801488] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 02/05/2019] [Indexed: 12/27/2022]
Abstract
In this study, the release of fluorescein from a photo-crosslinked conducting polymer hydrogel made from a hydrogel precursor poly(dimethylacrylamide-co-4-methacryloyloxy benzophenone (5%)-co-4-styrenesulfonate (2.5%)) (PDMAAp) and the conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) is investigated. Fluorescein, here used as a model for a drug, is actively released through application of an electrical trigger signal. The detected quantity is more than six times higher in comparison to that released from a conventional PEDOT/polysterene sulfonate (PSS) system. Release profiles, drug dose, and timing can be tailored by the application of different trigger signals and pretreatments. To demonstrate that the novel drug release system can be used for a drug relevant for local delivery to a neural interface, experiments are furthermore performed with the anti-inflammatory drug dexamethasone (Dex). The conducting polymer hydrogel facilitates the active release of Dex, in comparison to the previously used PEDOT/Dex. It is suggested that PEDOT/PDMAAp is an interesting alternative for conducting polymer based drug release systems, with the potential to offer more volume for storage, yet retaining the excellent electrochemical properties known for PEDOT electrodes.
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Affiliation(s)
- Carolin Kleber
- Department of Microsystems Engineering, Albert-Ludwigs University, Freiburg, Germany
- Brainlinks-Braintools, Albert-Ludwigs University, Freiburg, 79110, Germany
| | - Karen Lienkamp
- Department of Microsystems Engineering, Albert-Ludwigs University, Freiburg, Germany
- FIT Freiburg Centre for Interactive Materials and Bioinspired Technologies, Albert-Ludwigs University, Freiburg, Germany
| | - Jürgen Rühe
- Department of Microsystems Engineering, Albert-Ludwigs University, Freiburg, Germany
- Brainlinks-Braintools, Albert-Ludwigs University, Freiburg, 79110, Germany
- FIT Freiburg Centre for Interactive Materials and Bioinspired Technologies, Albert-Ludwigs University, Freiburg, Germany
| | - Maria Asplund
- Department of Microsystems Engineering, Albert-Ludwigs University, Freiburg, Germany
- Brainlinks-Braintools, Albert-Ludwigs University, Freiburg, 79110, Germany
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40
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Park S, Loke G, Fink Y, Anikeeva P. Flexible fiber-based optoelectronics for neural interfaces. Chem Soc Rev 2019; 48:1826-1852. [PMID: 30815657 DOI: 10.1039/c8cs00710a] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Neurological and psychiatric conditions pose an increasing socioeconomic burden on our aging society. Our ability to understand and treat these conditions relies on the development of reliable tools to study the dynamics of the underlying neural circuits. Despite significant progress in approaches and devices to sense and modulate neural activity, further refinement is required on the spatiotemporal resolution, cell-type selectivity, and long-term stability of neural interfaces. Guided by the principles of neural transduction and by the materials properties of the neural tissue, recent advances in neural interrogation approaches rely on flexible and multifunctional devices. Among these approaches, multimaterial fibers have emerged as integrated tools for sensing and delivering of multiple signals to and from the neural tissue. Fiber-based neural probes are produced by thermal drawing process, which is the manufacturing approach used in optical fiber fabrication. This technology allows straightforward incorporation of multiple functional components into microstructured fibers at the level of their macroscale models, preforms, with a wide range of geometries. Here we will introduce the multimaterial fiber technology, its applications in engineering fields, and its adoption for the design of multifunctional and flexible neural interfaces. We will discuss examples of fiber-based neural probes tailored to the electrophysiological recording, optical neuromodulation, and delivery of drugs and genes into the rodent brain and spinal cord, as well as their emerging use for studies of nerve growth and repair.
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Affiliation(s)
- Seongjun Park
- School of Engineering, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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41
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Affiliation(s)
- Esmaeil Salimi
- Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran
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42
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Tan RP, Chan AH, Wei S, Santos M, Lee BS, Filipe EC, Akhavan B, Bilek MM, Ng MK, Xiao Y, Wise SG. Bioactive Materials Facilitating Targeted Local Modulation of Inflammation. JACC Basic Transl Sci 2019; 4:56-71. [PMID: 30847420 PMCID: PMC6390730 DOI: 10.1016/j.jacbts.2018.10.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/10/2018] [Accepted: 10/12/2018] [Indexed: 11/02/2022]
Abstract
Cardiovascular disease is an inflammatory disorder that may benefit from appropriate modulation of inflammation. Systemic treatments lower cardiac events but have serious adverse effects. Localized modulation of inflammation in current standard treatments such as bypass grafting may more effectively treat CAD. The present study investigated a bioactive vascular graft coated with the macrophage polarizing cytokine interleukin-4. These grafts repolarize macrophages to anti-inflammatory phenotypes, leading to modulation of the pro-inflammatory microenvironment and ultimately to a reduction of foreign body encapsulation and inhibition of neointimal hyperplasia development. These resulting functional improvements have significant implications for the next generation of synthetic vascular grafts.
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Affiliation(s)
- Richard P. Tan
- Heart Research Institute, Sydney, New South Wales, Australia
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Alex H.P. Chan
- Heart Research Institute, Sydney, New South Wales, Australia
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Simon Wei
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Miguel Santos
- Heart Research Institute, Sydney, New South Wales, Australia
- School of Physics, University of Sydney, Sydney, New South Wales, Australia
| | - Bob S.L. Lee
- Heart Research Institute, Sydney, New South Wales, Australia
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Elysse C. Filipe
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
- Garvan Institute of Medical Research, Cancer Division, Sydney, New South Wales, Australia
| | - Behnam Akhavan
- Heart Research Institute, Sydney, New South Wales, Australia
- School of Physics, University of Sydney, Sydney, New South Wales, Australia
- School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, New South Wales, Australia
| | - Marcela M. Bilek
- School of Physics, University of Sydney, Sydney, New South Wales, Australia
- School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, New South Wales, Australia
- Charles Perkins Centre, University of Sydney, Sydney, New South Wales, Australia
- Sydney Nano Institute, University of Sydney, Sydney, New South Wales, Australia
| | - Martin K.C. Ng
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
- Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Yin Xiao
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Steven G. Wise
- Heart Research Institute, Sydney, New South Wales, Australia
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
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43
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Tranquillo E, Barrino F, Dal Poggetto G, Blanco I. Sol⁻Gel Synthesis of Silica-Based Materials with Different Percentages of PEG or PCL and High Chlorogenic Acid Content. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E155. [PMID: 30621329 PMCID: PMC6337738 DOI: 10.3390/ma12010155] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 12/23/2018] [Accepted: 12/29/2018] [Indexed: 12/20/2022]
Abstract
Implanted biomedical devices can induce adverse responses in the human body, which can cause failure of the implant-referred to as implant failure. Early implant failure is induced numerous factors, most importantly, infection and inflammation. Natural products are, today, one of the main sources of new drug molecules due to the development of pathogenic bacterial strains that possess resistance to more antibiotics used currently in various diseases. The aim of this work is the sol⁻gel synthesis of antibacterial biomedical implants. In the silica matrix, different percentages (6, 12, 24, 50 wt %) of polyethylene glycol (PEG) or poly(ε-caprolactone) (PCL) were embedded. Subsequently, the ethanol solutions with high amounts of chlorogenic acid (CGA 20 wt %) were slowly added to SiO₂/PEG and SiO₂/PCL sol. The interactions among different organic and inorganic phases in the hybrid materials was studied by Fourier transform infrared (FTIR) spectroscopy. Furthermore, the materials were soaked in simulated body fluid (SBF) for 21 days and the formation of a hydroxyapatite layer on their surface was evaluated by FTIR and XRD analysis. Finally, Escherichia coli and Pseudomonas aeruginosa were incubated with several hybrids, and the diameter of zone of inhibition was observed to assessment the potential antibacterial properties of the hybrids.
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Affiliation(s)
- Elisabetta Tranquillo
- Department of Engineering, University of Campania "Luigi Vanvitelli", via Roma 29, 81031 Aversa, Italy.
| | - Federico Barrino
- Department of Engineering, University of Campania "Luigi Vanvitelli", via Roma 29, 81031 Aversa, Italy.
| | | | - Ignazio Blanco
- Department of Civil Engineering and Architecture and UdR-Catania Consorzio INSTM, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy.
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Nyström L, Al-Rammahi N, Malekkhaiat Häffner S, Strömstedt AA, Browning KL, Malmsten M. Avidin-Biotin Cross-Linked Microgel Multilayers as Carriers for Antimicrobial Peptides. Biomacromolecules 2018; 19:4691-4702. [PMID: 30427659 DOI: 10.1021/acs.biomac.8b01484] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Herein, we report on the formation of cross-linked antimicrobial peptide-loaded microgel multilayers. Poly(ethyl acrylate- co-methacrylic acid) microgels were synthesized and functionalized with biotin to enable the formation of microgel multilayers cross-linked with avidin. Microgel functionalization and avidin cross-linking were verified with infrared spectroscopy, dynamic light scattering, and z-potential measurements, while multilayer formation (up to four layers) was studied with null ellipsometry and quartz crystal microbalance with dissipation (QCM-D). Incorporation of the antimicrobial peptide KYE28 (KYEITTIHNLFRKLTHRLFRRNFGYTLR) into the microgel multilayers was achieved either in one shot after multilayer formation or through addition after each microgel layer deposition. The latter was found to strongly promote peptide incorporation. Further, antimicrobial properties of the peptide-loaded microgel multilayers against Escherichia coli were investigated and compared to those of a peptide-loaded microgel monolayer. Results showed a more pronounced suppression in bacterial viability in suspension for the microgel multilayers. Correspondingly, LIVE/DEAD staining showed promoted disruption of adhered bacteria for the KYE28-loaded multilayers. Taken together, cross-linked microgel multilayers thus show promise as high load surface coatings for antimicrobial peptides.
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Affiliation(s)
| | | | | | | | - Kathryn L Browning
- Department of Pharmacy , University of Copenhagen , DK-2100 Copenhagen , Denmark
| | - Martin Malmsten
- Department of Pharmacy , University of Copenhagen , DK-2100 Copenhagen , Denmark
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Latza VM, Rodriguez-Loureiro I, Fragneto G, Schneck E. End Point Versus Backbone Specificity Governs Characteristics of Antibody Binding to Poly(ethylene glycol) Brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13946-13955. [PMID: 30354149 DOI: 10.1021/acs.langmuir.8b02774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
End-grafted poly(ethylene glycol) (PEG) brushes are widely used in order to suppress undesired protein adsorption to surfaces exposed to blood or other biological fluids. The specific adsorption of antibodies (Abs) to PEG brushes associated with PEG's antigenicity is drawing increasing attention because it can affect clinical applications. Here, the adsorption to PEG brushes of two Ab types, specifically binding the polymer backbone and the polymer endpoints, is structurally characterized by neutron reflectometry. The measurements yield volume fraction profiles of PEG and of the adsorbed Abs with sub-nanometer resolution perpendicular to the surface. For all brush parameters in terms of grafting density and polymerization degree, the Ab profiles clearly differ between backbone binders and endpoint binders. The adsorbed Ab amount per unit area is substantial for both Ab types and for all brush parameters investigated, even for dense brushes, which impose a considerable osmotic barrier to Ab insertion. The results therefore indicate that variation of brush parameters alone is insufficient to prevent undesired Ab adsorption. Instead, our work motivates further efforts in the search for nonantigenic brush chemistry.
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Affiliation(s)
- Victoria M Latza
- Max Planck Institute of Colloids and Interfaces , Am Mühlenberg 1 , 14476 Potsdam , Germany
| | | | - Giovanna Fragneto
- Institut Laue-Langevin , 71 Avenue des Martyrs , 38042 Grenoble Cedex 9 , France
| | - Emanuel Schneck
- Max Planck Institute of Colloids and Interfaces , Am Mühlenberg 1 , 14476 Potsdam , Germany
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Taraballi F, Sushnitha M, Tsao C, Bauza G, Liverani C, Shi A, Tasciotti E. Biomimetic Tissue Engineering: Tuning the Immune and Inflammatory Response to Implantable Biomaterials. Adv Healthc Mater 2018; 7:e1800490. [PMID: 29995315 DOI: 10.1002/adhm.201800490] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 05/31/2018] [Indexed: 12/31/2022]
Abstract
Regenerative medicine technologies rely heavily on the use of well-designed biomaterials for therapeutic applications. The success of implantable biomaterials hinges upon the ability of the chosen biomaterial to negotiate with the biological barriers in vivo. The most significant of these barriers is the immune system, which is composed of a highly coordinated organization of cells that induce an inflammatory response to the implanted biomaterial. Biomimetic platforms have emerged as novel strategies that aim to use the principle of biomimicry as a means of immunomodulation. This principle has manifested itself in the form of biomimetic scaffolds that imitate the composition and structure of biological cells and tissues. Recent work in this area has demonstrated the promising potential these technologies hold in overcoming the barrier of the immune system and, thereby, improve their overall therapeutic efficacy. In this review, a broad overview of the use of these strategies across several diseases and future avenues of research utilizing these platforms is provided.
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Affiliation(s)
- Francesca Taraballi
- Center for Biomimetic Medicine Houston Methodist Research Institute Houston TX 77030 USA
- Department of Orthopedic & Sports Medicine The Houston Methodist Hospital Houston TX 77030 USA
| | - Manuela Sushnitha
- Center for Biomimetic Medicine Houston Methodist Research Institute Houston TX 77030 USA
- Department of Bioengineering Rice University Houston TX 77005 USA
| | - Christopher Tsao
- Center for Biomimetic Medicine Houston Methodist Research Institute Houston TX 77030 USA
| | - Guillermo Bauza
- Center for Biomimetic Medicine Houston Methodist Research Institute Houston TX 77030 USA
- Center for NanoHealth Swansea University Medical School Swansea University Bay Singleton Park Wales Swansea SA2 8PP UK
| | - Chiara Liverani
- Center for Biomimetic Medicine Houston Methodist Research Institute Houston TX 77030 USA
- Biosciences Laboratory Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS Via Piero Maroncelli 40 47014 Meldola FC Italy
| | - Aaron Shi
- Center for Biomimetic Medicine Houston Methodist Research Institute Houston TX 77030 USA
- Wiess School of Natural Sciences Rice University Houston TX 77251‐1892 USA
| | - Ennio Tasciotti
- Center for Biomimetic Medicine Houston Methodist Research Institute Houston TX 77030 USA
- Department of Orthopedic & Sports Medicine The Houston Methodist Hospital Houston TX 77030 USA
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Eriksdotter M, Navarro-Oviedo M, Mitra S, Wahlberg L, Linderoth B, Tjernberg LO, Behbahani H. Cerebrospinal fluid from Alzheimer patients affects cell-mediated nerve growth factor production and cell survival in vitro. Exp Cell Res 2018; 371:175-184. [PMID: 30092220 DOI: 10.1016/j.yexcr.2018.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 07/06/2018] [Accepted: 08/05/2018] [Indexed: 11/29/2022]
Abstract
Alzheimer's disease (AD) is characterized by early degeneration of cholinergic neurons and decreased levels of nerve growth factor (NGF). Thus, increasing the NGF levels by for instance encapsulated cell bio-delivery (ECB) is a potential treatment strategy. The results from our previous first-in-human studies on ECB of NGF to the basal forebrain cholinergic neurons were promising, but indicated some variability of long-term viability of the encapsulated cells and associated reduced NGF-release. Here we studied the effect of amyloid beta-peptides (Aβ), interleukin 1-beta (IL-1β), and CSF from AD, Lewy body dementia (LBD) or subjective cognitive impairment (SCI) patients on the NGF overproducing cell line NGC-0295. At physiological concentrations, neither Aβ40 nor Aβ42 had any major impact on cell viability or NGF-production. In contrast, IL-1β dose-dependently affected NGF-production over time. Exposure of NGF-producing cells to CSF from AD patients showed significantly reduced NGF-release as compared to CSF from LBD or SCI patients. By mass spectrometry we found 3 proteins involved in inflammatory pathways to have an altered expression in AD CSF compared to LBD and SCI. Cell survival and NGF-release were not affected by Aβ. NGF-release was affected by IL-1β, suggesting that inflammation has a negative effect on ECB cells.
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Affiliation(s)
- Maria Eriksdotter
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Clinical Geriatrics, Stockholm, Sweden; Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Karolinska University Hospital, Theme Aging, Stockholm, Sweden
| | - Manuel Navarro-Oviedo
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Clinical Geriatrics, Stockholm, Sweden
| | - Sumonto Mitra
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Clinical Geriatrics, Stockholm, Sweden
| | | | - Bengt Linderoth
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Clinical Neuroscience, Stockholm, Sweden
| | - Lars O Tjernberg
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Stockholm, Sweden
| | - Homira Behbahani
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Stockholm, Sweden.
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48
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A cochlear implant loaded with dexamethasone and coated with hyaluronic acid to inhibit fibroblast adhesion and proliferation. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.05.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Polypyrrole/Agarose Hydrogel-Based Bladder Volume Sensor with a Resistor Ladder Structure. SENSORS 2018; 18:s18072288. [PMID: 30011944 PMCID: PMC6069483 DOI: 10.3390/s18072288] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/02/2018] [Accepted: 07/12/2018] [Indexed: 11/24/2022]
Abstract
Chronic monitoring of bladder activity and urine volume is essential for patients suffering from urinary dysfunctions. However, due to the anatomy and dynamics of the bladder, chronic and precise monitoring of bladder activity remains a challenge. Here, we propose a new sensing mechanism that measures the bladder volume using a resistive ladder network with contact switches. Instead of measuring the impedance between the electrode continuously, the proposed sensor provides a digitized output (‘on’ or ‘off’) when the bladder volume reaches a certain threshold value. We present simple proof-of-concept sensors which compare the discrete-mode operation to the continuous-mode operation. In addition, by using multiple pairs of this contact-mode switch in a resistor ladder structure, we demonstrate monitoring of the bladder volume in four discrete steps using an idealized balloon and an ex vivo pig’s bladder. We implemented the resistive ladder network using a conductive polypyrrole/agarose hydrogel composite which exhibits a Young’s modulus comparable to that of the bladder wall. Compared to the continuous-mode operation, the proposed sensing mechanism is less susceptible to drift due to material degradation and environmental factors.
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50
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Nyström L, Strömstedt AA, Schmidtchen A, Malmsten M. Peptide-Loaded Microgels as Antimicrobial and Anti-Inflammatory Surface Coatings. Biomacromolecules 2018; 19:3456-3466. [DOI: 10.1021/acs.biomac.8b00776] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | | | - Artur Schmidtchen
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-22184 Lund, Sweden
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